INJECTION MOULDING MACHINE WITH HYDRAULIC ACCUMULATOR

INJECTION MOLDING METHOD AND APPARATUS FOR CONTINUOUS PLASTICATION

In a reciprocating (RS) injection unit environment, as shown in Figure 1, a controller of the injection unit is arranged to continuously rotate the screw during both conventional plasticizing operation and shot injection. In this way the RS unit is more efficient, utilizing less energy and producing greater resin output. The injection unit includes a non-return valve adjacent a nozzle, which non-return valve is either configured to rotate with the screw to reduce wear or presented as a ball check style noon-return valve. In an injection molding environment, the rotating screw includes flights that allow granules of resin to melt and mix in spaces between adjacent flights, but the flights are arranged substantially to inhibit excessive displacement of resin around the flights.

Injection molding method and apparatus for continuous plastication

In a reciprocating (RS) injection unit environment, as shown in figure 1, a controller of the injection unit is arranged to continuously rotate the screw during both conventional plasticizing operation and shot injection. In this way the RS unit is more efficient, utilizing less energy and producing greater resin output. The injection unit includes a non-return valve adjacent a nozzle, which non-return valve is either configured to rotate with the screw to reduce wear or presented as a ball check style noon-return valve. In an injection molding environment, the rotating screw includes flights that allow granules of resin to melt and mix in spaces between adjacent flights, but the flights are arranged substantially to inhibit excessive displacement of resin around the flights.

Process and apparatus for injection moulding

The present invention relates to a process for injection moulding a hollow plastics article. The process includes the step of injecting a quantity of molten plastics material (20) into a mould cavity (25) to fill fully the mould cavity; and injecting pressurised fluid (31) into the plastics material in the mould cavity. At least one valve (29) is opened to allow a portion of the molten plastics material in the mould cavity to be expelled into at least one secondary cavity (26) coupled to the mould cavity, sufficient plastics material being expelled to fill the at least one secondary cavity. The remaining plastics material in the mould cavity is permitted to solidify and the fluid is exhausted from the mould cavity. The plastics article is then removed from the mould. The process includes determining when the step of filling full the mould cavity is at or near completion, and initiating the step of injecting pressurised fluid in response to that determination.

PROCEDURE AS WELL AS DRIVE SYSTEM FOR THE CONTROL/CCONTROLLING OF THE LINEAR PRESSING /GIESSBEWEGUNG

VERFAHREN UND VORRICHTUNG ZUM FESTSTELLEN EINER VERFAHREN UND VORRICHTUNG ZUM FESTSTELLEN EINER ABNORMALITÄT IN EINEM HYDRAULISCHEN SYSTEM ABNORMALITÄT IN EINEM HYDRAULISCHEN SYSTEM EINER GUSSMASCHINE EINER GUSSMASCHINE

SPRAYING CASTING PROCESS AND - DEVICE FOR CONTINUOUS PLASTIFIZIEREN

IN AN INJECTION MOLDING MACHINE, A METHOD OF CONTROLLING AN UPSTREAM MELT PREPARATION DEVICE

A method (300, 400) of controlling a melt preparation device (102, 110) is provided. The melt preparation device (102, 110) is located upstream from a melt accumulator (122), the melt accumulator (122) and the melt preparation device (102, 110) being part of an injection unit (100) for preparing and injecting molding material and being associated with a target cycle time. The method (300, 400) comprises appreciating (310, 410) an operational parameter associated with the melt accumulator (122); appreciating (320, 420) a target performance indicator associated with operation of the injection unit (100); based on a comparison of the operational parameter to the target performance indicator, generating (330, 430) a control signal for controlling operation of the melt preparation device (102, 110), such that the melt preparation device (102, 110) prepares molding material in an amount sufficient to transfer to the melt accumulator (122) within an allocated portion of the target molding cycle ...

INJECTION MOLDING METHOD AND APPARATUS FOR CONTINUOUS PLASTICATION

METHOD AND DEVICE FOR ENCAPSULATING ELECTRONIC COMPONENTS USING UNDERPRESSURE

... 본 발명은 언더프레셔를 사용하여 캐리어 상에 탑재된 전자 컴포넌트를 캡슐화하기 위한 방법에 관한 것이며, 상기 방법은 A) 캡슐화하기 위한 전자 컴포넌트를 상기 캐리어에 연결되는 몰드 캐비티에 설치하는 단계; B) 상기 전자 컴포넌트가 액체로 되도록 캡슐화 재료를 가열하는 단계; C) 상기 액체 캡슐화 재료에 압력을 가함으로써, 상기 캡슐화 재료를, 상기 전자 컴포넌트를 에워싸고 있는 상기 몰드 캐비티로 변위하는 단계; D) 상기 몰드 캐비티를 캡슐화 재료로 채우는 단계; 및 E) 상기 몰드 캐비티 내의 상기 캡슐화 재료를 적어도 부분적으로 경화시키는 단계를 포함한다. 본 발명은 또한 이러한 방법이 수행될 수 있는 장치에 관한 것이다.

PROCESS AND APPARATUS FOR GAS-ASSISTED INJECTION MOULDING PROCESS WITH EXPULSION OF PLASTICS MATERIAL

The present invention relates to a process for injection moulding a hollow plastics article. The process includes the step of injecting a quantity of molten plastics material (20) into a mould cavity (25) to fill fully the mould cavity; and injecting pressurised fluid (31) into the plastics material in the mould cavity. At least one valve (29) is opened to allow a portion of the molten plastics material in the mould cavity to be expelled into at least one secondary cavity (26) coupled to the mould cavity, sufficient plastics material being expelled to fill the at least one secondary cavity. The remaining plastics material in the mould cavity is permitted to solidify and the fluid is exhausted from the mould cavity. The plastics article is then removed from the mould. The process includes determining when the step of filling full the mould cavity is at or near completion, and initiating the step of injecting pressurised fluid in response to that determination.

METHOD OF PREPLASTICATING INJECTION MOLDING

INJECTION CONTROLLING METHOD FOR SCREW PREPLASTICATING TYPE INJECTION MOLDING MACHINE

PROBLEM TO BE SOLVED: To enhance the dimensional accuracy of a thick molding and to precisely mold it by reducing the irregularity of the charge amount in the injection step. SOLUTION: In the case of reverse stopping after metering in a preplasticating type injection molding machine for advancing a screw 12 to stop reversing it, the increased molten resin amount is reflected to the next metering, pre-compressed, the stopped position of a plunger 22 is detected, and the injection is controlled according to the stopped position as a reference. Thus, the cushioning amount becomes constant, and it makes it possible to mold without irregularity at each injection shot. COPYRIGHT: (C)1997,JPO ...

INJECTION MOLDING METHOD AND APPARATUS FOR CONTINUOUS PLASTICATION

... ²²²² In a reciprocating (RS) injection unit environment, as shown in ²Figure 1, a controller of the injection unit is arranged to ²continuously rotate the screw during both conventional ²plasticizing operation and shot injection. In this way the RS ²unit is more efficient, utilizing less energy and producing ²greater resin output. The injection unit includes a non-return ²valve adjacent a nozzle, which non-return valve is either ²configured to rotate with the screw to reduce wear or presented as ²a ball check style noon-return valve. In an injection molding ²environment, the rotating screw includes flights that allow ²granules of resin to melt and mix in spaces between adjacent ²flights, but the flights are arranged substantially to inhibit ²excessive displacement of resin around the flights.² ...

Injection molding method and apparatus for continuous plastication

In a reciprocating (RS) injection unit environment, as shown in FIG. 1 , a controller of the injection unit is arranged to continuously rotate the screw during both conventional plasticizing operation and shot injection. In this way the RS unit is more efficient, utilizing less energy and producing greater resin output. The injection unit includes a non-return valve adjacent a nozzle, which non-return valve is either configured to rotate with the screw to reduce wear or presented as a ball check style noon-return valve. In an injection molding environment, the rotating screw includes flights that allow granules of resin to melt and mix in spaces between adjacent flights, but the flights are arranged substantially to inhibit excessive displacement of resin around the flights.

VERFAHREN UND VORRICHTUNG ZUM FESTSTELLEN EINER ABNORMALITÄT IN EINEM HYDRAULISCHEN SYSTEM EINER GUSSMASCHINE

A method for detecting an abnormality of a hydraulic system in a molding machine which comprises a hydraulic cylinder for reciprocating a movable member of the molding machine, a valve for controlling a hydraulic fluid which is supplied into the hydraulic cylinder, and a pair of pressure sensors attached to the hydraulic cylinder, for detecting the pressures in a pair of pressure chambers of the hydraulic cylinder, is disclosed. The method comprises the steps of: holding the valve at a neutral position, and comparing the pressures in the pair of pressure chambers with a preset range of pressure on the basis of detecting signals from the pair of pressure sensors, when the movable member is inoperative; and outputting an abnormality signal when at least one of the pressures in the pair of pressure chambers is out of the preset range of pressure.

VERFAHREN ZUR ÜBERWACHUNG DES EINSPRITZVORGANGES BEI EINER SPRITZGIESSMASCHINE

The position or speed of an injection piston or screw or the plastic melt pressure is monitored and when the recorded figures(3) exceed a pre-determined deviation(4) from a standard value the control system initiates action to effect correction or stop the cycle. Determination of a normal value is by storing actual values(1,2) of the monitored parameters from molding cycles giving good results. Preferred Features: Stored values(1,2) are determined from a number of prior process cycles. Occasionally a result from an earlier cycle is replaced by one from a later cycle to compensate for natural process variation.

PROCEDURE AND DEVICE FOR THE DETERMINATION PROCEDURES AND DEVICE FOR THE DETERMINATION OF A ONE ABNORMALITÄT IN A HYDRAULIC SYSTEM ABNORMALITÄT IN A HYDRAULIC SYSTEM OF A CASTING MACHINE OF A CASTING MACHINE

A METHOD FOR CONTROLLING MULTIPLE SHOOTING POTS

A method (300) is provided for controlling an injection unit (100) having a first sub-assembly and a second sub-assembly, first and second sub-assemblies being functionally identical units. The method (300) includes the steps of appreciating an operational parameter for each of the first and second sub-assemblies, appreciating a target set point (146) associated with operating each of the first and second sub-assemblies, and when the operational parameter for at least one of the first and second sub=assemblies differs from the target set point (146), adjusting the operation of the at least one sub-assembly towards the target set point (146) by a control action. The adaptive control regulator (148) is operable to modify the control law of one of the first and second sub-assemblies so that the first and second sub-assemblies have substantially equal performance.

SERVO CONTROL FOR MOLDING MACHINE

A method and apparatus are provided for servo control of injection molding machi ne (10) devices (12, 14 and 16). A signal processor (104) periodically produces analogue control signals for controlling m achine mechanisms at a first loop closure interval and periodically produces digital control signals for controlling energization o f machine heaters at a second loop closure interval. Values of analogue and digital control signals are determined according to contr ol algorithms relating set point values and measured parameter values. Calculation of values of analogue control signals inc ludes calculation of a first command value according to a first control algorithm, calculation of a second command value according to a second control algorithm and selection of the lesser of the first and second command values. Compensation for "cold" therm ocouple junctions (162, 163, 16a) created at the connection of remote temperature sensing thermocouple leads and the signal proce ssor interface circuits ...

METHOD AND DEVICE FOR ENCAPSULATING ELECTRONIC COMPONENTS USING UNDERPRESSURE

The invention relates to a method for encapsulating electronic components mounted on a carrier using underpressure, comprising the processing steps of: A) placing an electronic component in a mould cavity, B) heating encapsulating material, C) displacing the encapsulating material to the mould cavity, D) filling the mould cavity, and E) curing the encapsulating material in the mould cavity. The invention also relates to a device with which such a method can be performed. COPYRIGHT KIPO & WIPO 2010 ...

METHOD AND DEVICE FOR ENCAPSULATING ELECTRONIC COMPONENTS USING UNDERPRESSURE

The invention relates to a method for encapsulating electronic components mounted on a carrier using underpressure, comprising the processing steps of: A) placing an electronic component in a mould cavity, B) heating encapsulating material, C) displacing the encapsulating material to the mould cavity, D) filling the mould cavity, and E) curing the encapsulating material in the mould cavity. The invention also relates to a device with which such a method can be performed.

Method for detecting abnormality in hydraulic system of molding machine and apparatus therefor

A method for detecting an abnormality of a hydraulic system in a molding machine which comprises a hydraulic cylinder for reciprocating a movable member of the molding machine, a valve for controlling a hydraulic fluid which is supplied into the hydraulic cylinder, and a pair of pressure sensors attached to the hydraulic cylinder, for detecting the pressures in a pair of pressure chambers of the hydraulic cylinder, is disclosed. The method comprises the steps of: holding the valve at a neutral position, and comparing the pressures in the pair of pressure chambers with a preset range of pressure on the basis of detecting signals from the pair of pressure sensors, when the movable member is inoperative; and outputting an abnormality signal when at least one of the pressures in the pair of pressure chambers is out of the preset range of pressure.

A METHOD FOR CONTROLLING MULTIPLE SHOOTING POTS

Process and apparatus for injection moulding

Method and drive system for the control/regulation of linear pressure/cast movement

VERFAHREN SOWIE ANTRIEBSSYSTEM FÜR DIE STEUERUNG/REGELUNG DER LINEAREN PRESS-/GIESSBEWEGUNG

A METHOD FOR CONTROLLING MULTIPLE SHOOTING POTS

A method (300) is provided for controlling an injection unit (100) having a first sub-assembly and a second sub-assembly, first and second sub-assemblies being functionally identical units. The method (300) includes the steps of appreciating an operational parameter for each of the first and second sub-assemblies, appreciating a target set point (146) associated with operating each of the first and second sub-assemblies, and when the operational parameter for at least one of the first and second sub=assemblies differs from the target set point (146), adjusting the operation of the at least one sub-assembly towards the target set point (146) by a control action. The adaptive control regulator (148) is operable to modify the control law of one of the first and second sub-assemblies so that the first and second sub-assemblies have substantially equal performance.

Injection molding machine

INJECTION MOLDING METHOD AND APPARATUS FOR CONTINUOUS PLASTICATION

In a reciprocating (RS) injection unit environment, as shown in Figure 1, a controller of the injection unit is arranged to continuously rotate the screw during both conventional plasticizing operation and shot injection. In this way the RS unit is more efficient, utilizing less energy and producing greater resin output. The injection unit includes a non-return valve adjacent a nozzle, which non-return valve is either configured to rotate with the screw to reduce wear or presented as a ball check style noon-return valve. In an injection molding environment, the rotating screw includes flights that allow granules of resin to melt and mix in spaces between adjacent flights, but the flights are arranged substantially to inhibit excessive displacement of resin around the flights.

SERVO CONTROL FOR MOLDING MACHINE

INJECTION MOLDING MACHINE

An injection device includes a plunger that has a cylindrical portion formed in an outermost diameter. A nozzle adapter is provided with a molding material charge port. A pressure control device injects a molding material into a barrel through the molding material charge port and moves the plunger backward while applying a set back pressure thereto in a metering.

METHOD AND DRIVE SYSTEM FOR THE CONTROL/REGULATION OF LINEAR PRESSURE/CAST MOVEMENT

The invention relates to a method for controlled driving of the cast axle (8) of pressure die casting machines, comprising a drive piston (15), wherein the forward and return motion of the piston (15) is carried out in a controlled manner. The invention is characterized in that the oil flow or oil pressure on the piston rod side is controlled/regulated by a pump (30) and additionally by a throttle valve (103) working in parallel at least during the filling phase, especially during the fast forward motion part.

Spritzgiessmaschine mit Hydraulikspeicher

Process and apparatus for sensing an anomaly in the hydraulic system of a moulding machine

A process for sensing an anomaly of a hydraulic system in a moulding machine is proposed, which machine has a hydraulic cylinder for moving back and forth a movable part of the moulding machine, a valve for controlling the hydraulic fluid fed to the hydraulic cylinder, and a pair of pressure sensors, which are fitted on the hydraulic cylinder for sensing the pressures in a pair of pressure chambers of the hydraulic cylinder. The process comprises the following steps: keeping the valve in a neutral position and comparing the pressure in the two pressure chambers with a predetermined pressure range on the basis of measuring signals from the two pressure sensors when the movable part is not in operation, and output of an anomaly signal whenever at least one of the pressures in the two pressure chambers lies outside the predetermined pressure range.

Spritzgussmaschine

Eine Spritzgussmaschine (10) umfasst: einen Kolben (20), der im Inneren eines Zylinders (14) vorgesehen und sich in einer axialen Richtung desselben vor- und zurückbeweg und um eine Achse desselben drehen kann; ein Zuführloch (22) zum Einspeisen einer Formmasse in flüssiger Form vor den Kolben (20); eine Dichtpackung (24), die auf einer Rückseite des Zuführlochs (22) vorgesehen ist, um zu verhindern, dass die durch das Zuführloch (22) eingespeiste Formmasse entlang des Kolbens (20) zurückfließt; und eine Steuereinheit (64) zum Steuern einer Rückziehbewegung des Kolbens (20) aufgrund von Druck der vom Zuführloch (22) eingespeisten Formmasse, um dadurch Dosierung durchzuführen. In dieser Konfiguration ist zumindest ein Teil des Zuführlochs (22) von einer Seitenfläche des Kolbens (20) zumindest vom Beginn bis zum Ende der Rückziehbewegung bedeckt.

INJECTION MOLDING METHOD AND APPARATUS FOR CONTINUOUS PLASTICATION

In a reciprocating (RS) injection unit environment, a controller of the injection unit is arranged to continuously rotate the screw during both conventional plasticizing operation and shot injection. In this way the RS unit is more efficient, utilizing less energy and producing greater resin output. The injection unit includes a non-return valve adjacent a nozzle, which non-return valve is either configured to rotate with the screw to reduce wear or presented as a ball check style noon-return valve. In an injection molding environment, the rotating screw includes flights that allow granules of resin to melt and mix in spaces between adjacent flights, but the flights are arranged substantially to inhibit excessive displacement of resin around the flights. © KIPO & WIPO 2007 ...

Method and device for encapsulating electronic components using underpressure

ADAPTIVE CONTROLLER FOR INJECTION MOLDING

INJECTION MOLD SYSTEM AND METHOD FOR INJECTION MOLDING

There is provided an injection mold system and a method for injection molding to produce a three- dimensional object. The system including: one or more extruders each adapted to receive one or more cartridges, the one or more cartridges containing extrudable material; an injection nozzle dimensioned to be positioned into an injection inlet of a mold; tubing each connecting one of the cartridges to the injection nozzle; and one or more controllers configured to control flow of the extrudable material from the one or more extruders to the injection nozzle to fill at least a portion of the interior chamber with the extrudable material to produce the three-dimensional object.

ADAPTIVE CONTROLLER FOR INJECTION MOLDING

An adaptive controller (42) is provided for controlling the transition, in an injection molding apparatus (10), from the injection stage to the packing stage. The controller operates by controlling the velocity of the ram (32) during the injection stage, and controlling the ram pressure during the packing stage. The controller (42) anticipates the transition from the injection stage to the packing stage by monitoring the ratio of pressure to velocity. The divergence of this ratio forecasts the onset of the packing stage. At this time, a pressure relief valve (46) is preset in anticipation of the packing stage, to prevent a pressure spike during the transition period. The flow control valve (40) is held constant during the transition.

IN AN INJECTION MOLDING MACHINE, A METHOD OF CONTROLLING AN UPSTREAM MELT PREPARATION DEVICE

A method (300, 400) of controlling a melt preparation device (102, 110) is provided. The melt preparation device (102, 110) is located upstream from a melt accumulator (122), the melt accumulator (122) and the melt preparation device (102, 110) being part of an injection unit (100) for preparing and injecting molding material and being associated with a target cycle time. The method (300, 400) comprises appreciating (310, 410) an operational parameter associated with the melt accumulator (122); appreciating (320, 420) a target performance indicator associated with operation of the injection unit (100); based on a comparison of the operational parameter to the target performance indicator, generating (330, 430) a control signal for controlling operation of the melt preparation device (102, 110), such that the melt preparation device (102, 110) prepares molding material in an amount sufficient to transfer to the melt accumulator (122) within an allocated portion of the target molding cycle ...

SERVO CONTROL FOR MOLDING MACHINE

A method and apparatus are provided for servo control of injection molding machine (10) devices (12, 14 and 16). A signal processor (104) periodically produces analogue control signals for controlling machine mechanisms at a first loop closure interval and periodically produces digital control signals for controlling energization of machine heaters at a second loop closure interval. Values of analogue and digital control signals are determined according to control algorithms relating set point values and measured parameter values. Calculation of values of analogue control signals includes calculation of a first command value according to a first control algorithm, calculation of a second command value according to a second control algorithm and selection of the lesser of the first and second command values. Compensation for "cold" thermocouple junctions (162, 163, 16a) created at the connection of remote temperature sensing thermocouple leads and the signal processor interface circuits ...

INVESTMENT CASTING APPARATUS

IN AN INJECTION MOLDING MACHINE, A METHOD OF CONTROLLING AN UPSTREAM MELT PREPARATION DEVICE

A method (300, 400) of controlling a melt preparation device (102, 110) is provided. The melt preparation device (102, 110) is located upstream from a melt accumulator (122), the melt accumulator (122) and the melt preparation device (102, 110) being part of an injection unit (100) for preparing and injecting molding material and being associated with a target cycle time. The method (300, 400) comprises appreciating (310, 410) an operational parameter associated with the melt accumulator (122); appreciating (320, 420) a target performance indicator associated with operation of the injection unit (100); based on a comparison of the operational parameter to the target performance indicator, generating (330, 430) a control signal for controlling operation of the melt preparation device (102, 110), such that the melt preparation device (102, 110) prepares molding material in an amount sufficient to transfer to the melt accumulator (122) within an allocated portion of the target molding cycle ...

VERTICAL MICROINJECTION MACHINE

Pressure injection moulding or die casting control in terms of melt flow velocity

A driven piston unit (2) injects melt into the moulding channels and moulding cavity (205, 206, 208), which have differing cross sections. The speed of the piston is controlled to even out the melt velocity, as it courses through the moulding channels. Should the melt reach a channel of small cross section, then the piston speed is reduced; and vice versa. Also claimed is a pressure injection moulding machine as described, with a sensor to determine when a cross-sectional variation has been encountered, which is used in controlling the piston motion.

Parameter control in an injection molding process involves using stored values from earlier successful operations to form tolerance areas for an existing operation

The position or speed of an injection piston or screw or the plastic melt pressure is monitored and when the recorded figures(3) exceed a pre-determined deviation(4) from a standard value the control system initiates action to effect correction or stop the cycle. Determination of a normal value is by storing actual values(1,2) of the monitored parameters from molding cycles giving good results. Preferred Features: Stored values(1,2) are determined from a number of prior process cycles. Occasionally a result from an earlier cycle is replaced by one from a later cycle to compensate for natural process variation.

ADAPTIVER REGLER ZUM SPRITZGIESSEN

METHOD OF PREPLASTICATING INJECTION MOLDING

A method of a preplasticating injection molding, comprising the steps of sending a molten resin plasticized in a plasticizing chamber to an injection chamber through a passage, metering the molten resin, and stopping the passage and precompressing the molten resin before injection is made by a plunger, wherein the stopping of the passage and the precompression function to achieve the precise metering and charging of resin. The deviation of the plunger form the position of completion of metering is determined after the stopping of the passage or the compression, and the position of metering for the next injection is corrected according to the deviation. Charging is effected on the basis of the plunger position detected at the time of precompression.

Injection method of preplasticization injection molding machine

Molten resin, plasticized in the plasticization chamber, is fed to the injection chamber through a connection passage where it is measured. Before it is injected by the plunger, the connection passage is blocked and the molten resin is preliminarily compressed. This invention provides a method using a preplasticization type injection molding machine that controls the volume of the filled molten resin with little variation utilizing blocking and preliminary compression. By means of blocking or preliminary compression, the position movement by which the plunger moves from the position at which the measurement is completed is calculated, and the position at which the next measurement will be complete is corrected. Furthermore, the molten resin fill operation is done on the basis of the position of the plunger detected at the time of the preliminary compression.

ADAPTIVE CONTROLLER FOR INJECTION MOLDING

An adaptive controller (42) is provided for controlling the transition, in an injection molding apparatus (10), from the injection stage to the packing stage. The controller operates by controlling the velocity of the ram (32) during the injection stage, and controlling the ram pressure during the packing stage. The controller (42) anticipates the transition from the injection stage to the packing stage by monitoring the ratio of pressure to velocity. The divergence of this ratio forecasts the onset of the packing stage. At this time, a pressure relief valve (46) is preset in anticipation of the packing stage, to prevent a pressure spike during the transition period. The flow control valve (40) is held constant during the transition.

SERVO CONTROL FOR MOLDING MACHINE

A method and apparatus are provided for servo control of injection molding machine (10) devices (12, 14 and 16). A signal processor (104) periodically produces analogue control signals for controlling machine mechanisms at a first loop closure interval and periodically produces digital control signals for controlling energization of machine heaters at a second loop closure interval. Values of analogue and digital control signals are determined according to control algorithms relating set point values and measured parameter values. Calculation of values of analogue control signals includes calculation of a first command value according to a first control algorithm, calculation of a second command value according to a second control algorithm and selection of the lesser of the first and second command values. Compensation for "cold" thermocouple junctions (162, 163, 16a) created at the connection of remote temperature sensing thermocouple leads and the signal processor interface circuits ...

A METHOD FOR CONTROLLING MULTIPLE SHOOTING POTS

A method (300) is provided for controlling an injection unit (100) having a first sub-assembly and a second sub-assembly, first and second sub-assemblies being functionally identical units. The method (300) includes the steps of appreciating an operational parameter for each of the first and second sub-assemblies, appreciating a target set point (146) associated with operating each of the first and second sub-assemblies, and when the operational parameter for at least one of the first and second sub=assemblies differs from the target set point (146), adjusting the operation of the at least one sub-assembly towards the target set point (146) by a control action. The adaptive control regulator (148) is operable to modify the control law of one of the first and second sub-assemblies so that the first and second sub-assemblies have substantially equal performance.

INJECTION MOLDING METHOD AND APPARATUS FOR CONTINUOUS PLASTICATION

METHOD AND DRIVE SYSTEM FOR THE CONTROL/REGULATION OF LINEAR PRESSURE/CAST MOVEMENT

The invention relates to a method for controlled driving of the cast axle (8) of pressure die casting machines, comprising a drive piston (15), wherein the forward and return motion of the piston (15) is carried out in a controlled manner. The invention is characterized in that the oil flow or oil pressure on the piston rod side is controlled/regulated by a pump (30) and additionally by a throttle valve (103) working in parallel at least during the filling phase, especially during the fast forward motion part.

VORSCHMELZVERFAHREN BEIM SPRITZGIESSEN

METHOD AND DEVICE FOR ENCAPSULATING ELECTRONIC COMPONENTS WITH CONTROLLED GAS PRESSURE

The present invention relates to a method for encapsulating electronic components mounted on a carrier, wherein the gas pressure in a venting connecting to the mould cavity is actively increased to an overpressure of at least 3 atmosphere after filling of the mould cavity with encapsulating material. The invention also relates to a device for performing such a method for encapsulating electronic components mounted on a carrier, comprising: mould parts which in a closed position define a mould cavity, feed means for liquid encapsulating material, a venting for suctioning gas from the mould cavity, and a pressure conduit whereby an overpressure can be applied in the venting.

Injection molding method and apparatus for continuous plastication

In a reciprocating (RS) injection unit environment, as shown in Fig. 1, a controller of the injection unit is arranged to continuously rotate the screw during both conventional plasticizing operation and shot injection. In this way the RS unit is more efficient, utilizing less energy and producing greater resin output. The injection unit includes a non-return valve adjacent a nozzle, which non-return valve is either configured to rotate with the screw to reduce wear or presented as a ball check style noon-return valve. In an injection molding environment, the rotating screw includes flights that allow granules of resin to melt and mix in spaces between adjacent flights, but the flights are arranged substantially to inhibit excessive displacement of resin around the flights.

Verfahren und Vorrichtung zur Erfassung einer Anomalität im Hydrauliksystem einer Formteilmaschine

Verfahren zur Erfassung einer Anomalität eines Hydrauliksystems in einer Formteilmaschine (30), welche einen Hydraulikzylinder (4) zum Hin- und Herbewegen eines beweglichen Teils der Formteilmaschine (30) aufweist, ein Ventil (7) zum Steuern eines dem Hydraulikzylinder (4) zugeführten Hydraulikfluids, und ein Paar von auf dem Hydraulikzylinder (4) vorgesehenen Drucksensoren (8, 9), zur Erfassung der Drucke in einem Paar von Druckkammern (5, 6) des Hydraulikzylinders (4), mit folgenden Schritten: Halten des Ventils (7) in einer neutralen Position; Beurteilen, ob jeder der Drucke in den beiden Druckkammern (5, 6) in einem vorbestimmten Druckbereich liegt, auf der Grundlage von Messsignalen von den beiden Drucksensoren (8, 9), wenn das bewegliche Teil nicht in Betrieb ist; und Ausgeben eines Anomalitätssignals, wenn zumindest einer der Drucke in den beiden Druckkammern (5, 6) außerhalb des vorbestimmten Druckbereiches liegt.

VORSCHMELZVERFAHREN BEIM SPRITZGIESSEN

INJECTION MOLDING METHOD AND APPARATUS FOR CONTINUOUS PLASTICATION

In a reciprocating (RS) injection unit environment, as shown in Figure 1, a controller of the injection unit is arranged to continuously rotate the screw during both conventional plasticizing operation and shot injection. In this way the RS unit is more efficient, utilizing less energy and producing greater resin output. The injection unit includes a non-return valve adjacent a nozzle, which non-return valve is either configured to rotate with the screw to reduce wear or presented as a ball check style noon-return valve. In an injection molding environment, the rotating screw includes flights that allow granules of resin to melt and mix in spaces between adjacent flights, but the flights are arranged substantially to inhibit excessive displacement of resin around the flights. © KIPO & WIPO 2009 ...

ADAPTIVE CONTROLLER FOR INJECTION MOLDING

An adaptive controller (42) is provided for controlling the transition, in an injection molding apparatus (10), from the injection stage to the packing stage. The controller operates by controlling the velocity of the ram (32) during the injection stage, and controlling the ram pressure during the packing stage. The controller (42) anticipates the transition from the injection stage to the packing stage by monitoring the ratio of pressure to velocity. The divergence of this ratio forecasts the onset of the packing stage. At this time, a pressure relief valve (46) is preset in anticipation of the packing stage, to prevent a pressure spike during the transition period. The flow control valve (40) is held constant during the transition.

Spritzgießmaschine

Eine Spritzgießmaschine hat einen Kolben mit einem zylindrischen Abschnitt größtmöglichen Durchmessers. Ein Düsenadapter ist mit einem Einspeiseeingang für Spritzgießmaterial versehen. Eine Drucksteuereinrichtung injiziert über den Spritzgießmaterial-Einspeiseeingang Spritzgießmaterial in einen Lauf und bewegt den Kolben rückwärts während beim Dosieren eine eingestellte Gegenkraft auf ihn einwirkt.

Method and device for encapsulating electronic components with controlled gas pressure

동시에 독립적으로 제어되는 양면 PCB 몰딩 기법

... 양면 패키지 몰딩을 위한 몰딩 어셈블리들 및 방법들이 기술된다. 일 실시예에서, 몰딩 컴파운드가 제1 액추에이터에 의해 전방 캐비티 내로 주입되고, 몰딩 컴파운드가 제2 액추에이터에 의해 후방 캐비티 내로 주입되며, 제1 및 제2 액추에이터 어셈블리들은 독립적으로 제어된다. 일 실시예에서, 몰딩 컴파운드는 몰딩 기판에 있는 스루홀을 통해 몰딩 기판의 전면으로부터 몰딩 기판의 배면으로, 그리고 후방 캐비티 내로 흐른다.

METHOD AND DEVICE FOR ENCAPSULATING ELECTRONIC COMPONENTS USING UNDERPRESSURE

The invention relates to a method for encapsulating electronic components mounted on a carrier using underpressure, comprising the processing steps of: A) placing an electronic component in a mould cavity, B) heating encapsulating material, C) displacing the encapsulating material to the mould cavity, D) filling the mould cavity, and E) curing the encapsulating material in the mould cavity. The invention also relates to a device with which such a method can be performed.

Injection molding machine

An injection device includes a plunger that has a cylindrical portion formed in an outermost diameter. A nozzle adapter is provided with a molding material charge port. A pressure control device injects a molding material into a barrel through the molding material charge port and moves the plunger backward while applying a set back pressure thereto in a metering.

SHOOTING POT TEMPERATURE REGULATION

Disclosed is a system and a related method for regulating a temperature in a shooting pot associated with an injection molding machine. The structure includes, amongst other things, a cooling circuit and thermocouple proximate a plunger entry end of the shooting pot as well as a cooling adjustment unit for controlling an amount of cooling provided by the cooling fluid. In operation a controller coupled with the cooling adjustment unit and the thermocouple controls the cooling adjustment unit based on a temperature reading associated with the thermocouple.

プランジャを備えたインライン式射出成形機

Verfahren zum Betreiben einer Spritz- oder Druckgießmaschine und Spritz- oder Druckgießmaschine hierfür

Metering control apparatus of pre-molding electric plastic injection machine

COMPUTER READABLE MEDIUM RECORDING OPERATION PROCEDURE OF INJECTION MOLDING APPARATUS FOR CONTINUOUS PLASTICATION

METHOD AND DEVICE FOR ENCAPSULATING ELECTRONIC COMPONENTS WITH CONTROLLED GAS PRESSURE

The present invention relates to a method for encapsulating electronic components mounted on a carrier, wherein the gas pressure in a venting connecting to the mould cavity is actively increased to an overpressure of at least 3 atmosphere after filling of the mould cavity with encapsulating material. The invention also relates to a device for performing such a method for encapsulating electronic components mounted on a carrier, comprising: mould parts which in a closed position define a mould cavity, feed means for liquid encapsulating material, a venting for suctioning gas from the mould cavity, and a pressure conduit whereby an overpressure can be applied in the venting.

Injection method of preplastiating molding machine

VERTICAL MICROINJECTION MACHINE

A vertical microinjection machine includes a base (1), a drive unit,a plasticizing unit, an injection unit and a mould closure system which are mounted on the base (1), wherein the closure system includes a lower mould clamping plate (2) which is fixed on the base (1) by a frame mounted on the base (1), an upper mould clamping plate (3) which can move up and down relative to the lower mould clamping plate (2) and two independent mould closure drive units which are symmetrically mounted on the base (1). Each mould closure drive unit includes: thrust rods (5), a transmission mechanism, a screw, a servo-motor (4), a “口”shaped support frame and a linear guide rail. The servo-motor (4) drives the screw, and then makes the transmission mechanism move up and down. Driven by the transmission mechanism, the thrust rods (5) open/close the upper and lower clamping plates (3, 2) and finish the closing/opening operations.

ADAPTIVER REGLER ZUM SPRITZGIESSEN

SPRITZGIESSVERFAHREN UND -VORRICHTUNG ZUM KONTINUIERLICHEN PLASTIFIZIEREN

Injection method of preplasticating molding machine

Method for making bricks and masonry structure obtained thereby

An improved moulding method and device which will ensure an accurate, constant shot weight of the dosage of molten plastic material being injected into the mould cavity, thereby to obtain substrate discs having a non-varying thickness. The method of the present invention comprises the step of sensing an actual, secondary rear end position of a moveable wall obtained shortly after the interruption of the supply of molten plastic material to a metering chamber, and then performing a forward stroke of said wall with a predetermined length, whereby an accurately metered constant dosage of molten plastic material will always be injected during each shot. The device includes a means for sensing an actual, secondary rear end position of the moveable wall, and a means for obtaining a predetermined length of the forward stroke of the moveable wall, thereby to inject an accurately metered constant dosage of molten plastic material during each shot.

Method and device for encapsulating electronic components using underpressure

The invention relates to a method for encapsulating electronic components mounted on a carrier using underpressure, comprising the processing steps of: (A) placing an electronic component in a mould cavity, (B) heating encapsulating material, (C) displacing the encapsulating material to the mould cavity, (D) filling the mould cavity, and (E) curing the encapsulating material in the mould cavity. The invention also relates to a device with which such a method can be performed.

Simultaneous independently controlled dual side PCB molding technique

Molding assemblies and methods for dual side package molding are described. In an embodiment, a molding compound is injected into a front cavity with a first actuator, and a molding compound is injected into a back cavity with a second actuator, with the first and second actuator assemblies being independently controlled. In an embodiment, the molding compound flows through a through-hole in a molding substrate from a front side of the molding substrate to a back side of the molding substrate, and into the back cavity.

METHOD, SYSTEM, AND APPARATUS FOR INJECTION MOLDING

A system, method and apparatus for controlling an injection unit to transfer a material to a mold cavity includes a first actuator and a second actuator, and a controller that is operatively connected to the first actuator and the second actuator. The first and second actuators are coupled to a ram of the injection unit. The first actuator rotates the ram within the barrel, and the second actuator translates the ram within the barrel. During a material fill stage of an injection cycle, the controller controls the first actuator to rotate the ram within the barrel. The controller also controls the second actuator to translate the ram within the barrel, and controls the second actuator to retract the ram away from a nozzle of the injection unit while exerting a compression force on the ram towards the nozzle. 1. A system for controlling an injection unit that is arranged to transfer a material to a mold cavity , the system comprising:a first actuator, a second actuator, and a controller;wherein the controller is operatively connected to the first actuator and the second actuator;wherein the first and second actuators are coupled to a ram of the injection unit that is disposed within a barrel of the injection unit; the controller controls the first actuator to rotate the ram within the barrel,', 'the controller controls the second actuator to translate the ram within the barrel, and', 'the controller controls the second actuator to retract the ram away from a nozzle of the injection unit that fluidly couples to the mold cavity and to exert a compression force on the ram towards the nozzle of the injection unit., 'wherein, during a material fill stage of an injection cycle for operating the injection unit during which the material is introduced into the injection unit2. The system of claim 1 , further comprising a torque transducer in communication with the controller claim 1 , wherein the torque transducer is arranged to monitor a torque that is being exerted by the ...

Method and drive system for control/regulation of linear pressure/cast movement

INJECTION MOLDING METHOD AND APPARATUS FOR CONTINUOUS PLASTICATION

Simultaneous independently controlled dual side PCB molding technique

Molding assemblies and methods for dual side package molding are described. In an embodiment, a molding compound is injected into a front cavity with a first actuator, and a molding compound is injected into a back cavity with a second actuator, with the first and second actuator assemblies being independently controlled. In an embodiment, the molding compound flows through a through-hole in a molding substrate from a front side of the molding substrate to a back side of the molding substrate, and into the back cavity.

METHOD OF PREPLASTICATING INJECTION MOLDING

A method of a preplasticating injection molding, comprising the steps of sending a molten resin plasticized in a plasticizing chamber to an injection chamber through a passage, metering the molten resin, and stopping the passage and precompressing the molten resin before injection is made by a plunger, wherein the stopping of the passage and the precompression function to achieve the precise metering and charging of resin. The deviation of the plunger form the position of completion of metering is determined after the stopping of the passage or the compression, and the position of metering for the next injection is corrected according to the deviation. Charging is effected on the basis of the plunger position detected at the time of precompression.

Method and device for encapsulating electronic components using underpressure

The invention relates to a method for encapsulating electronic components mounted on a carrier using underpressure, comprising the processing steps of: A) placing an electronic component in a mould cavity, B) heating encapsulating material, C) displacing the encapsulating material to the mould cavity, D) filling the mould cavity, and E) curing the encapsulating material in the mould cavity. The invention also relates to a device with which such a method can be performed.

Electro Fluid Driven Actuator and Method

An injection molding apparatus (5), comprising: a first fluid drive cylinder (940c, 941c, 942c), a second fluid drive cylinder (940ac, 941ac, 942ac) interconnected to a valve pin (1040, 1041, 1042), wherein the first fluid drive cylinder (940c, 941c, 942c) and the second fluid drive cylinder (940ac, 941ac, 942ac) are interconnected in an arrangement wherein reciprocating movement of a piston (940p, 941p, 942p) of the first cylinder drives concomitant back and forth movement of a piston (940ap, 941ap, 942ap) of the second cylinder and concomitant back and forth movement of the valve pin (1040, 1041, 1042); an electrically powered actuator (940, 941, 942) adapted to drive the piston of the first cylinder reciprocally according to a drive program such that the valve pin (1040, 1041, 1042) is driven between gate closed and gate open positions and selected positions therebetween.

System and apparatus for injection molding

A system, method and apparatus for controlling an injection unit to transfer a material to a mold cavity includes a first actuator and a second actuator, and a controller that is operatively connected to the first actuator and the second actuator. The first and second actuators are coupled to a ram of the injection unit. The first actuator rotates the ram within the barrel, and the second actuator translates the ram within the barrel. During a material fill stage of an injection cycle, the controller controls the first actuator to rotate the ram within the barrel. The controller also controls the second actuator to translate the ram within the barrel, and controls the second actuator to retract the ram away from a nozzle of the injection unit while exerting a compression force on the ram towards the nozzle.

Servo control for molding machine

A method and apparatus are provided for servo control of injection molding machine devices. A signal processor periodically produces analogue control signals for controlling machine mechanisms at a first loop closure interval and periodically produces digital control signals for controlling energization of machine heaters at a second loop closure interval. Values of analogue and digital control signals are determined according to control algorithms relating set point values and measured parameter values. Calculation of values of analogue control signals includes calculation of a first command value according to a first control algorithm, calculation of a second command value according to a second control algorithm and selection of the lesser of the first and second command values. Compensation for "cold" thermocouple junctions created at the connection of remote temperature sensing thermocouple leads and the signal processor interface circuits is provided. DC output interface circuits including ...

SERVO CONTROL FOR MOLDING MACHINE

A method and apparatus are provided for servo control of injection molding machine devices. A signal processor periodically produces analogue control signals for controlling machine mechanisms at a first loop closure interval and periodically produces digital control signals for controlling energization of machine heaters at a second loop closure interval. Values of analogue and digital control signals are determined according to control algorithms relating set point values and measured parameter values. Calculation of values of analogue control signals includes calculation of a first command value according to a first control algorithm, calculation of a second command value according to a second control algorithm and selection of the lesser of the first and second command values. Compensation for "cold" thermocouple junctions created at the connection of remote temperature sensing thermocouple leads and the signal processor interface circuits is provided. DC output interface circuits including ...

METHOD AND DRIVE SYSTEM FOR THE CONTROL/REGULATION OF LINEAR PRESSURE/CAST MOVEMENT

Injection moulding machine with hydraulic accumulator

Injection molding method and apparatus for continuous plastication

IN AN INJECTION MOLDING MACHINE, A METHOD OF CONTROLLING AN UPSTREAM MELT PREPARATION DEVICE

Method for controlling multiple shooting pots

A method ( 300 ) is provided for controlling an injection unit ( 100 ) having a first sub-assembly and a second sub-assembly, first and second sub-assemblies being functionally identical units. The method ( 300 ) includes the steps of appreciating an operational parameter for each of the first and second sub-assemblies, appreciating a target set point ( 146 ) associated with operating each of the first and second sub-assemblies, and when the operational parameter for at least one of the first and second sub-assemblies differs from the target set point ( 146 ), adjusting the operation of the at least one sub-assembly towards the target set point ( 146 ) by a control action. The adaptive control regulator ( 148 ) is operable to modify the control law of one of the first and second sub-assemblies so that the first and second sub-assemblies have substantially equal performance.

Injection molding flow control apparatus and method

An apparatus for controlling the rate of flow to a mold cavity including a controller instructing a valve system to drive an actuator and a valve pin and including instructions that instruct the valve system to drive an actuator and a valve pin and including instructions that instruct the valve system to move from a start position to one or more intermediate drive rate positions and subsequently from the one or more intermediate drive rate positions to a high drive rate position on receipt by the controller of a signal from a position sensor that is indicative of the valve pin having reached a second position.

Apparatus and method for detecting a position of an actuator piston

Apparatus and method for detecting a position of an actuator piston driving a valve pin in an injection molding system. The apparatus includes an actuator housing having a body portion, surrounding an axial bore, of a substantially non-magnetic and/or magnetically permeable material, a piston, movable within the axial bore for driving a valve pin, the piston including a magnetic member generating a magnetic field such that axial movement of the piston in the bore modifies the magnetic field according to the position of the piston relative to a detection position, and a magnetic field detector attached to an exterior surface of the body portion at the detection position for detecting the magnetic field associated with the position of the piston and generating an output signal determined by the piston position.

Nozzle shut off for injection molding system

An injection molding apparatus and method of fabricating a molded part are provided. The apparatus may include a barrel, a nozzle enclosing an end of the barrel and defining an opening in fluid communication with an inside of the barrel, and an extrusion screw positioned at least partially inside the barrel and rotatable relative to the barrel. The extrusion screw may include a screw tip. Relative axial movement between the barrel and the extrusion screw may open or close the opening of the nozzle to permit or prevent, respectively, material flow through the opening of the nozzle. The method may include clamping a mold, opening a nozzle, rotating the extrusion screw to pump a molten material into the mold until the mold is filled, closing the nozzle, and unclamping the mold to release a molded part.

METHOD OF INJECTION MOLDING WITH CONSTANT-VELOCITY FLOW FRONT CONTROL

In order to injection mold parts at a constant flow front velocity in a mold cavity of an injection molding system, particularly where the mold cavity has a varying thickness along its length, mold modeling software is used to calculate the cross-sectional area as a function of the distance from the gate, percentage of fill, or length of the mold cavity. Based on that cross-sectional area, the mold modeling software determines an appropriate recommended ram force profile and/or melt pressure profile that would result in filling the mold cavity at a constant flow rate. An injection molding system is then operated according to the recommended ram force profile and/or melt pressure profile. 1. A method , comprising:simulating, using a mold flow simulator, an injection molding filling cycle;determining a flow profile comprising a cross-sectional area of a flow front of a flow of molten thermoplastic material during the simulated injection molding filling cycle; anddetermining a force profile based at least in part on the determined flow profile, the force profile comprising a force to be applied to an injection molding ram such that the molten thermoplastic material has a substantially uniform flow front velocity at all times during a filling of one or more mold cavities in an injection molding apparatus operating the injection molding ram according to the determined force profile.2. The method of claim 1 , wherein determining the force profile comprises determining the force to be applied to the injection molding ram as a function of the cross-sectional area of the flow front.3. The method of claim 1 , wherein determining the force profile comprises determining the force to be applied to the injection molding ram such that a flow rate of the molten thermoplastic material is proportional to the cross-sectional area of the flow front.4. The method of claim 1 , wherein the flow profile comprises the cross-sectional area of the flow front of the flow of the molten ...

Method for evenly distributing plastic melt in a hot runner system using strain gauges

A hot runner injection molding apparatus, and method of use, is disclosed in which strain gauges are provided in the temperature zones of the hot runner injection molding apparatus and a hot runner controller creates a target strain profile, detects deviations from the target strain profile in any temperature zone based on the strain readings provided by the strain gauges in each temperature zone, and instructs correction of deviations from the target strain profile in any deviating temperature zone by adjusting the heat produced by a heater or heaters in the deviating temperature zone. The target strain profile may be based on a median or average of strain readings provided over time by the strain gauges in each temperature zone. A hollow installation tube for placing the strain gauges in the hot runner injection molding apparatus is also disclosed.

METHOD FOR INSPECTING SHAPED PRODUCT, AND METHOD FOR MANUFACTURING SHAPED PRODUCT

A method for inspecting a molded article, the method enabling non-destructive inspection of an internal condition of a molded article containing fluorine, and a method for producing a molded article including the inspection method. The method for inspecting a molded article includes a step (A1) of inspecting an internal condition of a molded article having a fluorine content of 30% by mass or more based on image data obtained by imaging the molded article by optical coherence tomography. 1. A method for inspecting a molded article , comprising:a step (A1) of inspecting an internal condition of a molded article having a fluorine content of 30% by mass or more based on image data obtained by imaging the molded article by optical coherence tomography.2. The inspection method according to claim 1 , further comprising a step (A2) of determining whether the molded article is a good product or not based on a result of the inspection in the step (A1).3. The inspection method according to claim 1 ,wherein the molded article contains a fluorine-containing polymer.4. The inspection method according to claim 1 ,wherein the molded article contains a melt-fabricable fluororesin.5. The inspection method according to claim 1 ,wherein the molded article is an injection-molded article.6. The inspection method according to claim 1 ,wherein the step (A1) is a step of inspecting cracking and delamination inside the molded article based on the image data.7. A method for producing a molded article comprising:a step (B1) of molding a material containing a fluorine atom to provide a plurality of molded articles each having a fluorine content of 30% by mass or more;a step (B2) of selecting at least one molded article from the plurality of molded articles and inspecting an internal condition of the selected molded article based on image data obtained by imaging the selected molded article by optical coherence tomography; anda step (B3) of sorting a good product from the plurality of molded ...

DEVICE AND METHOD FOR PRESSURE CONTROL OF ELECTRIC INJECTION MOLDING MACHINE

{Problem}The exact method with small time-lag of detecting injection pressure for controlling pressure in an electric-motor driven injection molding machine without using a pressure detector has been asked for because the pressure detector is very expensive, necessitates troublesome works for mounting, an electric protection against noise and the works for zero-point and span adjustings and causes a complicate mechanical structure. 1 a high-gain observer operative to feed a high-precision estimate of injection pressure with very small time-lag which is obtained by using an injection velocity signal detected by a rotary encoder mounted on a servomotor axis and a differentiator and a motor current demand signal applied to said servomotor or an actual motor current signal as inputs and by executing at a contant time interval a discrete-time expression of time integration derived by applying a standard method of trapezoid rule to a continuous-time time integration equation between a screw position and an injection velocity and by executing at a constant time interval discrete-time arithmetic expressions derived by applying a standard method of forward rectangular rule to continuous-time calculation procedures which are derived from a continuous-time mathematical model of an injection mechanism representing motion equations of said injection and pressure application mechanism and consisting of a state equation having two state variables of an injection velocity variable and an injection pressure variable and having two input variables of said motor current demand signal applied to said servomotor or said actual motor current signal and a screw position signal and an output equation having one output variable of an injection velocity signal as a measurable state variable,', 'an injection pressure setting device operative to feed an injection pressure command signal,', 'a subtractor operative to feed a difference signal between said injection pressure command signal from ...

Material Delivery Device, Three-Dimensional Shaping Device, And Injection Molding Device

A material delivery device includes: a plasticizing unit including a screw; a nozzle through which a plasticized material is delivered to outside; a communication flow path provided between the screw and the nozzle and through which the plasticized material flows; a pressure detection unit including a first cylinder coupled to the communication flow path, a rod inserted into the first cylinder, and a pressure sensor disposed with the rod separated from the communication flow path, in which the rod is configured to receive a pressure of the plasticized material in the communication flow path at a first end surface facing the communication flow path, and transmit the pressure to the pressure sensor through a second end surface opposite to the first end surface; and a rotation regulation mechanism configured to regulate rotation of the rod about a central axis along a longitudinal direction of the rod by engaging a first engaging portion provided on a side surface of the rod and a second engaging portion to be engaged with the first engaging portion. 1. A material delivery device , comprising:a plasticizing unit including a screw and configured to plasticize a material by rotation of the screw to produce a plasticized material;a nozzle through which the plasticized material is delivered to outside;a communication flow path provided between the screw and the nozzle and through which the plasticized material flows;a pressure detection unit including a first cylinder coupled to the communication flow path, a rod inserted into the first cylinder, and a pressure sensor disposed with the rod separated from the communication flow path, in which the rod has a first end surface facing the communication flow path and a second end surface opposite to the first end surface in a longitudinal direction of the rod, and configured to receive a pressure of the plasticized material in the communication flow path at the first end surface and transmit the pressure to the pressure sensor ...

MANUFACTURING METHOD AND INJECTION MOLDING SYSTEM

A method including a first step of performing clamping of a mold, injection and dwelling in an injection molding machine, a second step of performing a conveyance and a cooling of the mold outside of the machine, and a third step of performing a conveyance of the mold into the machine, an opening of the mold and an ejection of a molded part in the machine. The second step is performed for a first mold, the third step and the next first step are performed for a second mold. The first mold is conveyed by a first conveyance apparatus which is arranged on one lateral side of the machine. The second mold is conveyed by a second conveyance apparatus which is arranged on the other lateral side and is independently driven from the first conveyance apparatus. 1. A method of manufacturing a molded part by one injection molding machine while alternating two molds , the method comprising:a first step of performing clamping of a mold, injection and dwelling in the injection molding machine;a second step of, after the first step, performing a conveyance of the mold outside of the injection molding machine and a cooling of the mold outside of the injection molding machine; anda third step of, after the second step, performing a conveyance of the mold into the injection molding machine, an opening of the mold and an ejection of a molded part in the injection molding machine,wherein the first to third steps are repeatedly performed,while the second step is performed for a first mold, the third step and the next first step are performed for a second mold,the first mold is conveyed by a first conveyance apparatus which is arranged on one lateral side of the injection molding machine, andthe second mold is conveyed by a second conveyance apparatus which is arranged on the other lateral side of the injection molding machine and is independently driven from the first conveyance apparatus.2. The method according to claim 1 , whereineach of a fixed platen and a movable platen in the ...

SYSTEM FOR CONTROLLING A SHUTTER OF A PLASTIC MATERIAL INJECTION SYSTEM

The invention relates to a system for controlling a shutter () slidably arranged in a plastic material injection nozzle (), comprising a rotary electric motor (M) and a mechanism adapted to couple said motor (M) to the shutter to slidably drive it between a closing position of the nozzle and a maximum opening position of the nozzle, characterised in that said mechanism comprises: 111.-. (canceled)12. A system for controlling a shutter slidably arranged in a plastic material injection nozzle , comprising a rotary electric motor and a mechanism adapted to couple said motor to the shutter to slidably drive the shutter between a closing position of the nozzle and a maximum opening position of the nozzle , wherein the mechanism comprises:an eccentric integral with an output shaft of the motor so as to be rotationally driven by said output shaft, comprising a crank pin parallel to the output shaft but non-coaxial with said shaft,a slide adapted to be made integral with one end of the shutter, anda connecting rod comprising a first end articulated on the crank pin of the eccentric and a second end articulated on an axis of the slide such that rotation of the eccentric causes sliding of the oscillating shutter between the closing position and the maximum opening position.13. The system according to claim 12 , wherein the axis of rotation of the output shaft of the electric motor is perpendicular to the sliding axis of the shutter.14. The system according to claim 12 , further comprising a guide wherein the slide is slidably arranged.15. The system according to claim 12 , wherein the end of the shutter comprises a radial collar and the slide comprises a slot adapted to receive said collar claim 12 , said slot extending in a plane perpendicular to the sliding direction of the shutter.16. The system according to claim 12 , wherein the slide comprises a slot and a washer able to be displaced radially in said slot claim 12 , and the end of the shutter is integral with said ...

MOLDING SYSTEM AND METHOD FOR OPERATING THE SAME

A method for operating a molding machine includes specifying a simulating domain corresponding to a genuine domain in a mold disposed on the molding machine. The method proceeds to perform a virtual molding by using a setting packing pressure profile to generate a simulated state waveform, generating a designed state waveform including an isobaric phase and an isochoric phase while taking into consideration the simulated state waveform, and obtaining an updated packing pressure profile for applying a molding pressure to a portion of the genuine domain while taking into consideration a difference between the simulated state waveform and the designed state waveform. Subsequently, the method proceeds to set the molding machine while taking into consideration the updated packing pressure profile to perform an actual molding by applying an actual molding pressure to the at least a portion of the genuine domain to prepare the molding product. 1. A molding system , comprising:a molding machine;a mold disposed on the molding machine; and specifying a simulating domain corresponding to a genuine domain in the mold, wherein the genuine domain has a mold cavity to be filled with a molding resin from the molding machine to prepare a molding product;', 'performing a virtual molding by using a setting packing pressure profile to generate a simulated state waveform expressing a relationship between an in-mold pressure and an in-mold temperature of the molding resin;', 'generating a designed state waveform including an isobaric phase and an isochoric phase following the isobaric phase while taking into consideration the simulated state waveform;', 'obtaining an updated packing pressure profile for applying a molding pressure to at least a portion of the genuine domain while taking into consideration a difference between the simulated state waveform and the designed state waveform; and', 'setting the molding machine while taking into consideration the updated packing pressure ...

INJECTION FLOW CONTROL APPARATUS AND METHOD

An actuator assembly comprising a piston interconnected to a valve pin, the piston being driven by drive fluid controlled by a restriction valve, 1. In an apparatus for controlling flow of fluid injection material from an injection molding machine to a mold cavity , wherein the apparatus comprises: a manifold receiving the injected fluid mold material , the manifold having one or more fluid delivery channels that delivers the injected fluid material through a gate to the mold cavity;a pressure sensing assembly comprising:an actuator comprising a piston interconnected to a valve pin drivable along a drive path that extends between a gate closed position where a distal end of the valve pin stops flow through the gate and an upstream open position where the distal end of the valve pin is withdrawn upstream to enable injection fluid material to flow through the gate,{'b': '14', 'the piston being housed within a piston housing in an arrangement that forms an upstream drive chamber and a downstream drive chamber, the upstream drive chamber having a drive fluid port fluid sealably interconnected via an upstream drive fluid channel to a restriction valve, the piston being drivable upstream and downstream by drive fluid () pumped into and out of the upstream drive chamber through the drive fluid port, drive fluid channel and restriction valve,'}a pressure sensor adapted to sense pressure of the drive fluid disposed within the upstream drive chamber or within the upstream drive fluid channel,a controller that includes a program that instructs the restriction valve to close for a first portion of an injection cycle to prevent flow of the drive fluid such that the piston is held or stopped in a first position where drive fluid resides and remains within the upstream drive chamber or within the upstream drive fluid channel without flow through the restriction valve during the first portion of the injection cycle,the pressure sensor sensing pressure of the drive fluid resident ...

Apparatus for injection moulding of plastic materials

Apparatus for injection moulding of plastic material includes a mould having at least one gate towards a moulding cavity and at least one injector cooperating with the gate. The gate is formed by a gate insert screwed and arranged resting on a centring seat with conical surface of the mould.

MOLD CLAMP CONTROL METHOD FOR INJECTION MOLDING MACHINE HAVING TOGGLE-TYPE MOLD CLAMPING MECHANISM

A mold clamp control method for an injection molding machine having a toggle-type mold clamping mechanism. The mold clamp control method includes: a low-pressure mold clamping step that performs position hold control by which a crosshead is held in a set holding position in a state where a toggle link has been bent, when injection-filling is started; and a compression-press step that performs speed and position control by which the crosshead is advanced toward a set advancement position from the set holding position in a state where a first output upper limit value has been provided to a driving section. Advancement of the crosshead is continued in at least part of the compression-press step in a state where a generated output of the driving section is maintained at the first output upper limit value. 1. A mold clamp control method for an injection molding machine having a toggle-type mold clamping mechanism ,the toggle-type mold clamping mechanism bending/extending a toggle link by retreating/advancing a crosshead in a mold opening/closing direction by a driving section, and thereby mold-opening/closing and mold-clamping a movable mold attached to a movable plate, with respect to a fixed mold attached to a fixed plate,the mold clamp control method including:a low-pressure mold clamping step that performs position hold control by which the crosshead is held in a set holding position in a state where the toggle link of the toggle-type mold clamping mechanism has been bent, when injection-filling is started; anda compression-press step that performs speed and position control by which the crosshead is advanced toward a set advancement position from the set holding position in a state where a first output upper limit value has been provided to the driving section of the toggle-type mold clamping mechanism,advancement of the crosshead being continued in at least part of the compression-press step in a state where a generated output of the driving section of the toggle- ...

METHOD FOR PROCESSING FILMS, AND A FEED DEVICE, AN INJECTION MOLD AND A SYSTEM

A method for processing film webs including providing at least two film webs that are arranged next to one another in a direction substantially perpendicular to the feed direction and have motifs, delivering the at least two film webs that are arranged next to one another into the injection mold and aligning the at least two film webs that are arranged next to one another in such a way that each motif is arranged register-accurate with respect to a respective cavity. A feed device includes at least two film pay-off reels and at least two film take-up reels, wherein one film pay-off reel and one film take-up reel is assigned to each film web. An injection mold for back injection molding at least two film webs having motifs has at least two cavities. 1. A method for processing film webs , by means of a feed device with a feed direction and an injection mold having at least two cavities , wherein the method comprises the following steps:providing at least two film webs that are arranged next to one another in a direction substantially perpendicular to the feed direction and have motifs,delivering the at least two film webs that are arranged next to one another into the injection mold,aligning the at least two film webs that are arranged next to one another in such a way that each motif is arranged register-accurate with respect to a respective cavity.2. The method according to claim 1 , wherein the at least two film webs that are arranged next to one another are provided claim 1 , delivered and/or aligned independently of one another.3. The method according to claim 1 , wherein the alignment and/or delivery of the at least two film webs that are arranged next to one another is effected in each case with the help of at least one register mark.4. The method according to claim 1 , wherein the alignment and/or delivery of the at least two film webs that are arranged next to one another is effected in each case with the help of at least one motif of each of the at least two ...

NON-COAXIALLY MOUNTED ELECTRIC ACTUATOR AND TRANSMISSION

An apparatus for controlling the rate of flow of fluid mold material comprising: 1. An apparatus for controlling the rate of flow of fluid mold material from an injection molding machine to a mold cavity , the apparatus comprising:a manifold that receives an injection fluid mold material, the manifold having a delivery channel that delivers the injection fluid mold material under an injection pressure to a gate of a mold cavity disposed within a mold, the gate being controllably opened and closed by a valve pin having a pin axis, the valve pin being slidably mounted for reciprocal upstream and downstream linear movement along the pin axis such that a downstream end of the valve pin is drivable into and out of open and closed positions relative to the gate,an electric actuator comprising an electric motor comprised of a motor housing that houses a drive shaft having a drive gear and a drive axis that is rotatably mounted within the motor housing and is drivably rotatable around the drive axis by a source of electrical power or energy and a transmission comprised of a transmission gear rotatably mounted within a transmission housing, the transmission gear having a gear axis and being drivably rotatable around the gear axis,the drive gear, the transmission gear and the valve pin being drivably interconnected and arranged such that the drive axis and the gear axis are non-coaxially mounted or disposed relative to each other and such that driven rotation of the drive gear around the drive axis rotatably drives the transmission gear around the gear axis and linearly drives the valve pin along the pin axis,wherein one or the other of the motor housing or the transmission housing are removably attached to a top clamping or mounting plate that is mounted upstream of the manifold and fixedly interconnected to the mold.2. The apparatus of wherein the valve pin comprises a pin stem and a pin connector claim 1 , the transmission gear being interconnected to a pin coupling that ...

Control method for injection moulding

A control method for an injection moulding system having an extruder, feeding material continuously to an accumulator, portioning material intermittently to an injection device, wherein the control method is configured to drive the extruder at a high speed or at a low speed respectively, the high speed and the low speed defining an extruder speed interval, the method comprising acquiring a value for an actual positional change for the accumulator (ΔPOS ACT ), comparing the value for the actual positional change (ΔPOS ACT ) with a predicted value for the positional change (ΔPOS PRED ), and adjusting a speed of the extruder based on a result of the comparison.

Method of Injection Molding USing One or More Strain Gauges as a Virtual Sensor

A injection molding method involves measuring, using at least one strain gauge sensor, a change in strain in a mold side of a mold cavity, approximating a pressure within the mold cavity based on the change in strain, comparing the approximated pressure to a pre-set trigger point, and if the approximated pressure equals or exceeds the pre-set trigger point, activating a virtual cavity sensor having an optimal pre-defined pressure-time curve, wherein upon activation, the virtual cavity sensor tracks approximated pressures calculated from the change in strain measurements measured by the at least one strain gauge sensor over time and compares the results of the approximated pressure tracking to the optimal pre-defined pressure-time curve.

INJECTION MOLDING APPARATUS AND INJECTION MOLDING METHOD

An injection molding apparatus including a mold, an injection device and at least one sensor is provided. The mold has a mold cavity. The injection device is adapted to inject a material into the mold cavity such that the material is formed into a forming article. The at least one sensor is disposed on the mold and adapted to sense at least one of a temperature and a pressure in the mold cavity. The at least one sensor is located at an inner surface of the mold cavity and corresponds to a non-appearance surface of the forming article. In addition, an injection molding method is also provided. 1. An injection molding apparatus , comprising:a mold comprising a mold cavity;an injection device adapted to inject a material into the mold cavity such that the material is formed into a forming article; andat least one sensor disposed on the mold and adapted to sense at least one of a temperature and a pressure in the mold cavity, wherein the at least one sensor is located at an inner surface of the mold cavity and corresponds to a non-appearance surface of the forming article.2. The injection molding apparatus according to claim 1 , wherein the at least one sensor comprises a temperature sensor and a pressure sensor.3. The injection molding apparatus according to claim 2 , wherein the temperature sensor and the pressure sensor are integrated into a single sensing element.4. The injection molding apparatus according to claim 1 , wherein the inner surface of the mold cavity comprises at least one concave portion claim 1 , the at least one concave portion corresponds to a portion to-be-cut of the forming article claim 1 , and the at least one sensor is located in the at least one concave portion.5. The injection molding apparatus according to claim 4 , wherein the at least one concave portion is a material injection area of the mold cavity or at least one overflow area of the mold cavity.6. An injection molding method claim 4 , comprising:providing a mold and at least one ...

Mold positioning device

There is provided a structure for positioning a first mold part of a mold on a mold mounting face in an injection molding machine. The structure comprises a positioner configured to connect the first mold part to part of the injection molding machine, wherein the positioner is adjustable to position the first mold part on the mold mounting face. The structure further comprises controller executable instructions executable in a controller with which to resolve an alignment parameter of the mold using a feedback signal from a sensor. Further provided is a method of operating an injection molding machine which method comprises the steps of positioning a first mold part of a mold on a mold mounting face using a positioner and appreciating an alignment parameter of the mold with reference to a feedback signal from a sensor.

ACOUSTIC NOISE SENSING FOR CONTROLLING MANUFACTURE OF A COMPONENT PART MADE OF A FLOWABLE BASE MATERIAL

A tool () for manufacturing a component part from a flowable base material, wherein the tool () comprises a processing chamber () into which the flowable base material is introducible for manufacturing the component part, an acoustic sensor () configured for sensing an acoustic signal originating from the tool (), particularly from the processing chamber (), and being indicative of an interaction between the flowable base material and the tool (), particularly the processing chamber (), during the manufacturing, wherein the acoustic sensor () comprises a movable actuator (), and a control unit () configured for controlling and/or documenting the manufacturing in the processing chamber () based on the sensed acoustic signal. 123-. (canceled)24. A tool for manufacturing a component part from a flowable base material , the tool comprising:a processing chamber into which the flowable base material is introducible for manufacturing the component part;an acoustic sensor configured for sensing an acoustic signal originating from the tool, particularly from the processing chamber, and being indicative of an interaction between the flowable base material and the tool, particularly the processing chamber, during the manufacturing, wherein the acoustic sensor comprises a movable actuator; anda control unit configured for controlling and/or documenting the manufacturing in the processing chamber based on the sensed acoustic signal.25. The tool according to claim 24 , wherein the acoustic sensor comprises:at least one movable actuator to be positioned at the processing chamber and being configured for being moved by the flowable base material in response to the introduction of the flowable base material into the processing chamber;at least one acoustic wave generating element configured for generating an acoustic wave with a predetermined frequency characteristic upon being hit by the at least one actuator when being moved by the flowable base material.26. The tool according to ...

Injection molding flow control apparatus and method

A method and apparatus for performing an injection molding cycle comprising drivably interconnecting a valve pin to an electric motor actuator and controllably operating the electric motor to drive the valve pin at one or more reduced rates of upstream or downstream travel based on either detection of the position of the pin or actuator or on a preselected length of time at which to drive the valve pin.

NOZZLE SHUT OFF FOR INJECTION MOLDING SYSTEM

An injection molding apparatus and method of fabricating a molded part are provided. The apparatus may include a barrel, a nozzle enclosing an end of the barrel and defining an opening in fluid communication with an inside of the barrel, and an extrusion screw positioned at least partially inside the barrel and rotatable relative to the barrel. The extrusion screw may include a screw tip. Relative axial movement between the barrel and the extrusion screw may open or close the opening of the nozzle to permit or prevent, respectively, material flow through the opening of the nozzle. The method may include clamping a mold, opening a nozzle, rotating the extrusion screw to pump a molten material into the mold until the mold is filled, closing the nozzle, and unclamping the mold to release a molded part. 1. A method of molding a part , comprising:rotating a screw within a barrel to extrude a molten material through a nozzle opening of a nozzle into a mold cavity; andafter extruding the molten material through the nozzle opening, inserting a cylindrical tip portion of the screw corresponding in geometry to the nozzle opening into the nozzle opening along an entire axial length of the nozzle opening to displace all of the molten material from the nozzle opening.2. The method of claim 1 , wherein inserting the tip portion of the screw into the nozzle opening comprises inserting the tip portion of the screw into the nozzle opening until the tip portion of the screw is substantially flush with an exterior surface of the nozzle.3. The method of claim 1 , wherein inserting the tip portion of the screw into the nozzle opening comprises sealingly engaging the tip portion of the screw with the nozzle along the entire axial length of the nozzle opening.4. The method of claim 1 , further comprising sealingly engaging an interior surface of the nozzle with a transition portion of the screw.5. The method of claim 4 , wherein the transition portion of the screw extends outward from the ...

Injection molding system for the calculation of optimum operating conditions and machine learning therefor

Disclosed is an injection molding system including: a state observation section observing, when injection molding is performed, physical-amounts relating to the injection molding that is being performed; a physical-amount data storage section storing the physical-amount data; a reward-conditions setting section setting reward conditions for machine learning; a reward calculation section calculating a reward based on the physical-amount data and the reward conditions; an operating-conditions adjustment learning section performing machine learning of adjusting operating conditions based on the reward calculated by the reward calculation section, the operating conditions, and the physical-amount data; a learning-result storage section storing a learning result of the machine learning by the operating-conditions adjustment learning section; and an operating-conditions adjustment-amount output section determining and outputting an operating condition to be adjusted and an adjustment amount based on the machine learning by the operating-conditions adjustment learning section.

ATTACHMENT FOR A WASHING OR RINSING AGENT BOTTLE

An attachment for a washing or rinsing agent bottle. The attachment is made from a main component and at least one auxiliary component in a multicomponent injection casting method, wherein a seal element is molded using the auxiliary component. The main component or the auxiliary component has a marker which causes a contrast between the auxiliary component and the main component under UV light or IR light. The invention also relates to a method for producing such an attachment. 1. An attachment for a washing or rinsing agent bottle , the attachment being produced from a main component and at least one auxiliary component in a multi-component injection molding process , a seal element being formed by the auxiliary component , characterized in that the main component or the auxiliary component has a marker which causes a contrast between the main component and the auxiliary component under UV light or IR light.2. The attachment according to claim 1 , characterized in that the auxiliary component that forms the seal element has the marker.3. The attachment-according to claim 1 , characterized in that the auxiliary component is softer than the main component.4. The attachment according to claim 1 , characterized in that the auxiliary component is harder than the main component.5. The attachment according to claim 1 , characterized in that the auxiliary component has a Shore A hardness of from 30 to 90 ShA at 23° C.6. The attachment according to claim 1 , characterized in that the attachment is a closure claim 1 , which comprises a base part for fastening the closure on the washing or rinsing agent bottle and a hinged lid for opening and closing the closure.7. The attachment according to claim 6 , characterized in that the hinged lid comprises a closure plug which is used as a seal element and sits in a pouring spout of the base part when the hinged lid is in a closed position.8. The attachment according to claim 1 , characterized in that the seal element abuts a ...

Injection Molding Machines and Methods for Accounting for Changes in Material Properties During Injection Molding Runs

A method and a machine that account for changes in material properties of molten plastic material during an injection run. If viscosity of the molten plastic material changes during an injection run, a controller alters a step time of the injection cycle to ensure that molten plastic material completely fills and packs a mold cavity to prevent part flaws such as short shots or flashing. 1. A method of automatically adjusting a step time for an injection molding cycle in an injection molding run to adapt for variations in the flowability of a molten plastic material , the method comprising:(a) during a first molding cycle of an injection molding run, injecting a first shot of molten plastic material into a mold cavity and removing injection pressure from the first shot of molten plastic material so that the first molding cycle has a first step time;(b) during the first molding cycle, measuring a first time for the molten plastic material to reach a flow front sensor that is configured to sense the presence of a flow front of the molten plastic material at a particular location in the mold cavity;(c) a first comparing of the first time to a predetermined time to determine a first comparison result;(d) determining a second step time, based, at least in part, on the first comparison result; and(e) during a second molding cycle of the injection molding run, subsequent to the first molding cycle, injecting a second shot of molten plastic material into the mold cavity and removing injection pressure from the second shot of molten plastic material so that the second molding cycle has the second step time.2. The method of claim 1 , including determining the predetermined time claim 1 , based claim 1 , at least in part claim 1 , on a time for a shot of molten plastic material claim 1 , having known flowability claim 1 , to reach the flow front sensor.3. The method of claim 1 , wherein the measuring includes measuring the first time from a start of the first molding cycle ...

Injection Molding Machines and Methods for Accounting for Changes in Material Properties During Injection Molding Runs

A method and a machine that account for changes in material properties of molten plastic material during an injection run. If viscosity of the molten plastic material changes during an injection run, a controller alters a step time of the injection cycle to ensure that molten plastic material completely fills and packs a mold cavity to prevent part flaws such as short shots or flashing. 1. A method of automatically adjusting a step time for an injection molding cycle to adapt for variations in the flowability of a molten plastic material , the method comprising:(a) during a first molding cycle, injecting a first shot of molten plastic material into a mold cavity;(b) during the first injection molding cycle, measuring a first time for the molten plastic material to reach a flow front sensor that is configured to sense the presence of a flow front of the molten plastic material at a particular location in the mold cavity;(c) comparing the first time to a predetermined time to determine a first comparison result;(d) determining a first step time, based, at least in part, on the first comparison result; and(e) during the first molding cycle, removing injection pressure from the first shot of molten plastic material so that the first injection molding cycle has the first step time.2. The method of claim 1 , including determining the predetermined time claim 1 , based claim 1 , at least in part claim 1 , on a time for a shot of molten plastic material claim 1 , having known flowability claim 1 , to reach the flow front sensor.3. The method of claim 1 , wherein the measuring includes measuring the first time from a start of the first injection molding cycle until the flow front sensor detects arrival of the flow front of the molten plastic material.4. The method of claim 1 , wherein the comparing includes determining whether the first time is greater than or less than the predetermined time.5. The method of claim 4 , wherein the first comparing includes comparing the first ...

Temperature control device of injection molding machine having abnormality detection function

An injection molding temperature control device according to an aspect of the present disclosure controls output of a heater that heats a target site, based on a detection value of a temperature sensor which detects temperature of the target site of an injection molding machine that injects resin into a mold using an injection machine, the injection molding temperature control device including: a temperature control unit which controls output of the heater so as to make the detection value of the temperature sensor approach a predetermined set temperature; a supplied heat amount calculation unit which calculates a supplied heat amount to the target site based on at least one of a drive voltage, a duty ratio and an electrical current value of the heater; and an abnormality detection unit which detects abnormality in temperature control of the target site, based on the detection value of the temperature sensor, and a supplied heat amount calculated by the supplied heat amount calculation unit.

Injection molding machine including mold rotating device

A first rotation controller that rotates a rotary table by feedback control based on a rotation amount detected by a rotation amount detection unit and a second rotation controller that rotates the rotary table by the feedback control based on a distance detected by a distance detection unit are included and rotation control by the first rotation controller is switched to that by the second rotation controller at a predetermined rotation angle.

MELT TEMPERATURE MEASUREMENT SYSTEM

A melt temperature sensing kit includes a housing and a cup. The housing defines a cavity and has an outer periphery configured to be received by a platen of an injection molding machine. The cup has a proximate end and a distal end and is configured to be received within at least a portion of the cavity. The cup includes a base enclosing the distal end of the cup and a sidewall extending from the base, the sidewall defining a first aperture at the proximate end of the cup, a second aperture disposed between the proximate end and the distal end of the cup, and an internal volume. The first aperture, the second aperture, and the internal volume cooperate to define a flow path. At least one of the housing and the cup facilitate measurement of a shot flow temperature as part of a melt temperature measurement process. 1. A melt temperature sensing kit , comprising:a housing defining a cavity and having an outer periphery configured to be received by a platen of an injection molding machine; and a base enclosing the distal end of the cup; and', 'a sidewall extending from the base, the sidewall defining a first aperture at the proximate end of the cup, a second aperture disposed between the proximate end and the distal end of the cup, and an internal volume, wherein the first aperture, the second aperture, and the internal volume cooperate to define a flow path,, 'a cup having a proximate end and a distal end and configured to be received within at least a portion of the cavity, the cup comprisingwherein at least one of the housing and the cup are configured to position a temperature probe along the flow path and thereby facilitate measurement of a shot flow temperature as part of a melt temperature measurement process.2. The melt temperature sensing kit of claim 1 , wherein the housing defines a third aperture extending laterally inward from the outer periphery and forming a portion of the flow path.3. The melt temperature sensing kit of claim 2 , wherein the sidewall of ...

A METHOD AND APPARATUS FOR DETECTING A LEAK OF MOLTEN PLASTICS MATERIAL

Apparatus () for detecting a leak of molten plastics material in a hot runner mould () comprises a detecting circuit () which in turn comprises a plurality of tubular detecting elements () connected in series by connecting conduits (). The detecting circuit () is located in galleries () in the hot runner mould () with the tubular detecting elements () located adjacent locations in the galleries () where leaks are likely to occur. A compressed air source () delivers compressed air at a regulated pressure through the detecting circuit () at a controlled flow rate controlled by a flow controller (). A first pressure sensor () at the upstream end of the detecting circuit () and a second pressure sensor () at a downstream end of the detecting circuit () monitors the pressure upstream of the detecting circuit (). The tubular detecting elements () are of heat stabilised silicone rubber material of deformable transverse cross-section, which is deformable by molten plastics material leaking into the gallery () adjacent the corresponding one of the tubular detecting elements (). A microcontroller () monitors signals from the first and second pressure sensors () and () and on detecting an increase in the pressure read from the second pressure sensor () above a stored normal pressure value, the microcontroller () operates a sounder () and a relay () to activate a visual alert and to deactivate the moulding machine. 184-. (canceled)85. A method for detecting a leak of molten plastics material , the method comprising placing a tubular detecting element of deformable transverse cross-section adjacent a site from which molten plastics material may leak , urging a fluid through the tubular detecting element , monitoring one of the pressure and flow of the fluid through the tubular detecting element at a location one of upstream and downstream of the tubular detecting element , and determining the presence of a leak of molten plastics material adjacent the tubular detecting element ...

VALVE SYSTEM IN AN INJECTION MOLDING SYSTEM

An injection molding apparatus including: 1. An injection molding apparatus comprising an injection molding machine , a manifold that receives injection fluid from the machine and routes the injection fluid during the course of an injection cycle from an upstream end toward a downstream end of a fluid flow channel disposed in the manifold or a nozzle communicating with the manifold , the fluid flow channel having a flow axis and a channel length , the fluid flow channel communicating at the downstream end with a gate to a cavity of a mold , the apparatus including:a valve pin driven by an actuator, the valve pin extending axially through at least a portion of the channel length of the fluid flow channel, the valve pin having an upstream end interconnected to the actuator and a downstream end, the valve pin being drivable by the actuator axially upstream and downstream through the fluid flow channel,the fluid flow channel including a throat having an inner circumferential surface having a selected throat configuration and throat diameter,wherein the bulbous protrusion and the throat are adapted to enable a restricted flow of the injection fluid from an upstream side of the bulbous protrusion to a downstream side of the bulbous protrusion that reduces tensile forces on the pin when the bulbous protrusion is axially aligned with the throat.the valve pin being drivable to a maximum downstream position where a distal tip end of the valve pin closes the gate and stops flow of the injection fluid through the gate.2. The apparatus of wherein:the actuator is driven by a valve assembly comprised of a housing and a spool slidably mounted and controllably movable back and forth along an axis within the housing between two or more drive fluid flow positions,the spool being mechanically driven by first and second actuators or solenoids that each separately engage the spool at opposing axial ends to effect movement of the spool back and forth between the drive fluid flow positions ...

Injection Mold With Fail Safe Pressure Mechanism

A low pressure injection mold includes a failsafe pressure mechanism that prevents the low pressure injection mold from being subjected to excessive injection pressures or excessive clamping tonnage that could damage the low pressure injection mold.

CABLING INTERFACE FOR A PRODUCTION MACHINE IN THE PLASTICS PROCESSING INDUSTRY AND METHOD FOR RETOOLING SUCH A PRODUCTION MACHINE

A production machine in the plastics processing industry includes multiple cavities and multiple piezoelectric pressure transducers. At least one piezoelectric pressure transducer is arranged at each cavity and captures an internal tool pressure inside the cavity and returns an electrical charge signal for each internal tool pressure detected. A cabling interface conducts the electrical charge signal away from piezoelectric pressure transducer via an inner cable. Each of the inner cables can be connected electrically to the cabling interface via at least two different connection standards. 1. A cabling interface for a production machine in the plastics processing industry , which production machine includes multiple cavities and multiple piezoelectric pressure transducers , wherein at least one piezoelectric pressure transducer is arranged at each cavity , which piezoelectric pressure transducer captures an internal tool pressure inside the cavity and returns an electrical charge signal for each internal tool pressure detected and conducts the electrical charge signal away the cabling interface via an inner cable , the cabling interface comprising:a frame defining an inner side and an outer side disposed opposed to and facing away from the inner side;at least one inner socket carried on the inner side of the frame and that includes at least two connection ports electrically connected together in a parallel circuit relationship, each of the two connection ports being configured according to a different connection standard; andat least one outer socket carried on the outer side of the frame and that is paired with and electrically connected together in a parallel circuit relationship to the at least one inner socket.2. The cabling interface according to claim 1 , further comprising:a plurality of inner sockets carried on the inner face of the frame, each of the plurality of inner sockets including at least two connection ports that are electrically connected together ...

PLASTIC ARTICLE FORMING APPARATUSES AND METHODS FOR CONTROLLING MELT FLOW

A process of forming molded articles using an injection molding apparatus is provided. The process includes providing a thermoplastic material to the injection molding apparatus. The thermoplastic material is heated such that the thermoplastic material is in a molten state. The molten thermoplastic material is injected into at least one mold cavity of the injection molding apparatus using an injection element. A melt pressure of the thermoplastic material filling the at least one mold cavity is monitored using a sensor. The sensor provides a signal indicative of melt pressure in the cavity to a controller. The controller controls the injection element thereby changing melt pressure of the thermoplastic material filling the at least one mold cavity based on the signal to reach a target cavity pressure. A molded article is formed by reducing a mold temperature of the thermoplastic material within the at least one mold cavity. 1. A process of forming molded articles using an injection molding apparatus , the process comprising:providing a thermoplastic material to the injection molding apparatus;heating the thermoplastic material such that the thermoplastic material is in a molten state;injecting the molten thermoplastic material into at least one mold cavity of the injection molding apparatus using an injection element;monitoring melt pressure of the thermoplastic material filling the at least one mold cavity using a sensor, the sensor providing a signal indicative of melt pressure in the at least one mold cavity to a controller;the controller controlling the injection element thereby changing melt pressure of the thermoplastic material filling the at least one mold cavity based on the signal to reach a target cavity pressure; andforming a molded article by reducing a mold temperature of the thermoplastic material within the at least one mold cavity.2. The process of claim 1 , wherein the thermoplastic material having a starting melt flow index (MFI) and a range of ...

Injection molding machine

An injection molding machine includes a belt transmission mechanism (mold opening/closing mechanism, ejector mechanism, screw drive mechanism, injection mechanism) configured to transmit drive force from a driving shaft (driving pulley) to a driven shaft (driven pulley) by means of a belt. The injection molding machine includes: a cover covering part or entirety of the belt; and a sensor attached to the cover and configured to detect an abnormality of the belt.

METHOD AND DEVICE FOR INJECTION OVERMOULDING

The invention concerns an injection overmoulding device comprising at least one indexed rotary turret on which cooled moulds are installed, each mould comprising a plurality of cavities, and at least five stationary stations arranged around said turret, including at least a first station, a second station and a third station that are used, respectively, for carrying out the operations of positioning the inserts in the cavities of the mould, injecting plastic material into the cavities of the mould, and demoulding the at least partially cooled objects. The device comprises, for each mould, at least separate injection means. The invention also concerns a method implemented by the device. 124-. (canceled)25. An injection overmolding device for forming molded objects comprising:an indexed rotary turret having a plurality of cooled molds, each cooled mold including a plurality of cavities;an injection device for each cavity; anda plurality of operational stations arranged around the indexed rotary turret, a first operational station for positioning an insert into at least some of the cavities of one of the plurality of the cooled molds,', 'a second operational station for injecting plastic material into at least some of the cavities of one of the plurality of the cooled molds having the inserts for forming the molded objects with the inserts, and', 'a third operational station for removing the at least partially cooled and molded objects with the inserts formed in the least some of the cavities., 'wherein the plurality of operational stations include,'}26. The device as claimed in claim 25 , wherein each cooled mold includes a device for locking the cooled mold to the indexed rotary turret.27. The device as claimed in claim 25 , wherein each cavity includes a device for closing the cavity to apply a pressure directly to the cavity during the injecting of the plastic material by the second operational station.28. The device as claimed in claim 25 , wherein each cavity ...

INJECTION MOLDING APPARATUS AND METHOD FOR AUTOMATIC CYCLE TO CYCLE CAVITY INJECTION

An injection molding system comprising: 112.-. (canceled)13. An injection molding system for initiating flow of fluid material into multiple gates of a mold cavity during an injection molding cycle , the system comprising:a first selected valve comprising a first fluid flow passage having a first gate to the cavity, a first valve pin driven reciprocally along an axial upstream downstream path of travel through the first flow passage by a first actuator between gate open and gate closed positions,one or more downstream valves, each downstream valve comprising a downstream fluid flow passage having a downstream gate to the cavity disposed downstream of the first gate, a downstream valve pin driven reciprocally along an axial upstream downstream path of travel through the downstream fluid flow passage by a downstream actuator between a gate open and a gate closed position,a controller receiving a first signal, indicative of a start of injection that feeds the fluid material to the injection molding system, the controller including a set of instructions that instruct the actuator of the valve associated with the at least one selected downstream gate to open the gate by withdrawing the valve pin from the gate closed position at an instruction time (X), the instruction time comprising a predetermined open gate target time (X) based on the first signal,wherein the valve associated with the at least one selected downstream gate further includes a position sensor that detects an actual open gate time (A) upon withdrawal of the valve pin from the at least one selected downstream gate, the position sensor sending a signal indicative of the actual open gate time (A) to the controller,the controller receiving the signal from the position sensor and including a set of instructions that automatically determines an automatic adjusted instruction time (X′) for use on a subsequent injection cycle, wherein the instructions that automatically determines comprises decreasing the time of ...

INJECTION MOLDING MACHINE WITH VISCOSITY MEASURING FUNCTION AND METHOD FOR MEASURING VISCOSITY USING INJECTION MOLDING MACHINE

A nozzle is attached to a heating cylinder via a nozzle adapter. A sensor for pressure measurement is attached to the nozzle adapter. A molten resin is injected into the air with a front of the nozzle open, and a resin pressure is measured by pressure measuring unit while the molten resin is being injected into the air. Based on the resin pressure, the viscosity of the injected molten resin is determined. 1. An injection molding machine configured to melt a resin in a heating cylinder and then move a screw or a plunger forward to inject the molten resin through a nozzle , the injection molding machine comprising:a nozzle adapter attached between a tip portion of the heating cylinder and the nozzle to provide a molten resin channel that connects the heating cylinder to the nozzle;a pressure measuring unit configured to measure a resin pressure in the nozzle adapter; anda molten resin injecting unit configured to inject the molten resin into air with a front of the nozzle open,the injection molding machine further comprising:a viscosity determining unit configured to determine viscosity of the injected molten resin based on the resin pressure measured by the pressure measuring unit while the molten resin injecting unit is injecting the molten resin into the air.2. The injection molding machine according to claim 1 , wherein a resin pressure measurement position in the nozzle adapter is a position closer to the nozzle than an axial position that is closest to the nozzle claim 1 , among axial positions where the molten resin channel has a diameter equal to an inner diameter of a heating cylinder-side end surface.3. The injection molding machine according to claim 1 , wherein a pressure measurement position in the nozzle adapter is a cylindrical portion claim 1 , of the molten resin channel claim 1 , which has an inner diameter equal to an inner diameter of a nozzle-side end surface.4. The injection molding machine according to claim 1 , further comprising a storing unit ...

Closed Loop Control for Injection Molding Processes

Systems and approaches for controlling an injection molding machine having a mold forming a mold cavity and being controlled according to an injection cycle include extruding a molten polymer according to an extrusion profile and measuring at least one variable during the extrusion profile with a first sensor. At least one extrusion operational parameter is adjusted based on the measured variable. The extrusion profile is terminated upon the molten polymer exceeding a first threshold, and the molten polymer is injected into the mold cavity according to an injection profile via a screw that moves from a first position to a second position. Upon completion of the injection profile, a recovery profile commences in which the screw is moved to the first position.

INJECTION MOLDING MACHINE AND FLASH PREVENTION METHOD

When an injection molding machine performs molding, the mold clamping force on the mold is adjusted on the basis of a mold displacement of the mold or the injection peak pressure and injection foremost position so that the molding is performed without causing flash and by an appropriate mold clamping force with which energy can be reduced. The amount of mold displacement and also the injection peak pressure and the injection foremost position are monitored during automatic operation. If there occurs no mold displacement change exceeding a threshold or if there occurs no injection peak pressure anomaly or injection foremost position anomaly exceeding thresholds, the automatic operation is continued. If the mold displacement change occurs or if the injection peak pressure anomaly and the injection foremost position anomaly occur, the operation of the injection molding machine is stopped. 1. An injection molding machine comprising a mold clamping unit and an injection unit , the mold clamping unit including a movable platen attached movably along a tie bar located across a stationary platen and a pressure-receiving platen , the injection molding machine capable of performing automatic operation of repeating a molding cycle by the mold clamping unit closing a mold including a movable mold attached to the movable platen and a fixed mold attached to the stationary platen and applying a mold clamping force to perform mold clamping by extension of a toggle mechanism located between the pressure-receiving platen and the movable platen and the injection unit performing injection filling of a molten resin into the clamped mold ,the injection molding machine further comprising a mold gap detection sensor configured to detect mold displacement of the mold, the mold displacement referring to a change occurring in a gap between contact surfaces of the movable mold and the fixed mold along with a change in a length of the tie bar during the injection filling, an injection pressure ...

INJECTION MOLDING SYSTEM AND METHOD FOR MANUFACTURING MOLDED OBJECT

An injection molding system includes: an injection molding machine configured to operate in accordance with a command generated using a first language, and inject a molten material into a mold to mold a molded object; a robot configured to operate in accordance with a command generated using a second language, and convey the molded object; and a control device configured to control the injection molding machine and the robot. When determining that an error occurs in at least one of the injection molding machine and the robot, the control device transmits, to the injection molding machine, a command generated using the first language and for causing the injection molding machine to execute a return operation, and transmits, to the robot, a command interpretable by the second language and for causing the robot to execute a return operation, so as to cause the injection molding machine and the robot to execute the return operations. 1. An injection molding system comprising:an injection molding machine configured to operate in accordance with a command generated using a first language, and inject a molten material from a nozzle into a mold to mold a molded object;a robot configured to operate in accordance with a command generated using a second language, and convey the molded object molded by the injection molding machine; anda control device configured to transmit the command generated using the first language to the injection molding machine to control the injection molding machine, and transmit a command interpretable by the second language to the robot to control the robot, whereinwhen determining that an error occurs in at least one of the injection molding machine and the robot, the control device transmits, to the injection molding machine, a command generated using the first language and for causing the injection molding machine to execute a return operation, and transmits, to the robot, a command interpretable by the second language and for causing the robot ...

Heating module, method for producing a molded part and device for producing a molded part

A heating module for heating at least one film element. The heating module has two or more heating segments with in each case one or more heating elements for heating a first area of the film element assigned to the respective heating segment, wherein the heating module and/or at least one of the heating segments includes at least one sensor for measuring the state of the heating of the film element.

INJECTION MOLDING FLOW CONTROL APPARATUS AND METHOD

An apparatus for controlling the rate of flow to a mold cavity including a controller instructing a valve system to drive an actuator and a valve pin and including instructions that instruct the valve system to drive an actuator and a valve pin and including instructions that instruct the valve system to move from a start position to one or more intermediate drive rate positions and subsequently from the one or more intermediate drive rate positions to a high drive rate position on receipt by the controller of a signal from a position sensor that is indicative of the valve pin having reached a second position. 1. A method of performing an injection molding cycle in an injection molding apparatus comprising:a manifold that receives an injection fluid mold material, the manifold having a delivery channel that delivers the injection fluid mold material under an injection pressure to a first gate of a mold cavity,an actuator drivably interconnected to a valve pin having a tip end drivable along a drive path that extends between a first position where the tip end of the valve pin obstructs the gate to prevent the injection fluid material from flowing into the cavity, a second position upstream of the first position wherein the tip end of the valve pin restricts flow of the injection fluid along at least a portion of the length of the drive path extending between the first position and the second position, and a third position upstream of the second position where the injection fluid material flows freely without restriction from the tip end of the pin through the first gate,the actuator being driven by a valve system that is controllably adjustable between a start position, one or more intermediate drive rate positions and a high drive rate position, the actuator being driven upstream at one or more corresponding intermediate rates of travel when the valve system is in the one or more intermediate drive rate positions and at a higher rate of travel than the one or more ...

INJECTION MOLDING FLOW CONTROL APPARATUS AND METHOD

An apparatus for controlling the rate of flow of mold material to a mold cavity, the apparatus comprising: an injection molding machine and a manifold; an actuator interconnected to a valve pin having a tip end; a valve system in fluid communication with the actuator to drive the actuator at one or more rates of travel, the valve system having a start position, one or more intermediate drive rate positions and a high drive rate position, the start position holding the valve pin in a gate closed position; a controller that instructs the valve system to move from the start position to the one or more intermediate drive rate positions and to remain in the one or more intermediate drive rate positions for one or more corresponding predetermined amounts of time and further drives the valve system to move from the one or more intermediate drive rate positions to the high drive rate position on expiration of the one or more predetermined amounts of time. 1. A method of performing an injection molding cycle in an injection molding apparatus comprising:an injection molding machine and a manifold that receives an injected mold material from the injection molding machine, the manifold having a delivery channel that delivers the mold material under an injection pressure to a first gate of a mold cavity,an actuator interconnected to a valve pin driving the valve pin from a first position where the tip end of the valve pin obstructs the gate to prevent the injection fluid material from flowing into the cavity, upstream to a second position upstream of the gate where the mold material flows at a maximum rate through the gate and continuously upstream from the start position through one or more intermediate positions between the first position and the second position wherein the tip end of the valve pin restricts flow of the injection mold material to one or more rates less than the maximum rate,a valve system for controllably driving the valve pin, the valve system being ...

INJECTION MOLDING SYSTEM, INJECTION MOLDING MACHINE, AND PERIPHERAL DEVICE

An injection molding system capable of easily calculating relative position information between a movable part of an injection molding machine and a movable part of a peripheral device is provided. A first control unit of an injection molding machine calculates first relative position information which is relative position information of a first movement position M set to a movable part in relation to a first reference position K set to a first connection portion A second control unit of a robot calculates second relative position information which is relative position information of a second movement position M set to a hand in relation to a second reference position K set to a second connection portion The first control unit and the second control unit calculate inter-drive-unit relative position information which is relative position information between the first movement position M and the second movement position M on the basis of the first relative position information and the second relative position information. 1. An injection molding system comprising an injection molding machine and a peripheral device connected to the injection molding machine , whereinthe injection molding machine includes:a first movable part;a first driving unit that moves the first movable part;a first control unit that calculates first relative position information on a relative position of a first movement position of the first movable part in relation to a first reference position of the injection molding machine; anda first output unit that outputs the first relative position information calculated by the first control unit to the peripheral device, andthe peripheral device includes:a second movable part;a second driving unit that moves the second movable part;a second control unit that calculates second relative position information on a relative position of a second movement position of the second movable part in relation to a second reference position of the peripheral device; ...

Method and apparatus for producing hollow articles made of injection moulded plastic material

A method and apparatus for producing hollow articles made of injection moulded plastic material by a mould having a die within which there is inserted a core, and at least one injector including a pin valve displaceable between a closing position and an opening position for injecting the pressurized plastic material into a space comprised between the die and the core. During the injection, any flexural deflection of the core is detected and the pin valve of the or of each injector is displaced in a controlled fashion to adjust a pressure and a flow rate of the injected plastic material, so as to reduce or eliminate such deflection of the core. 1. A method for producing hollow articles made of injection moulded plastic material by a mould having a die defining a cavity within which a core is inserted , and at least one injector including a pin valve displaceable between a closing position and an opening position for injecting the pressurized plastic material into a space comprised between the die and the core , comprising:actuating displacement of the pin valve of the or of each injector in a controlled fashion so as to adjust a pressure and a flow rate of the injected plastic material, anddetecting, during injection, any flexural deflection of the core, wherein the controlled displacement of the pin valve of the or of each injector is actuated by adjusting at least one among a position, speed, acceleration and stroke of the pin valve so as to adjust the pressure and the flow rate of the injected plastic material thereby reducing or eliminating such flexural deflection of the core.2. The method according to claim 1 , wherein in order to detect the flexural deflection of the core claim 1 , one among a deflection of a base of the core claim 1 , a position of a free end of the core claim 1 , and a pressure of the injected plastic material claim 1 , or combinations thereof claim 1 , is measured.3. The method according to claim 1 , wherein injection is carried out by at ...

RESIN MOLDED ARTICLE AND METHOD FOR PRODUCING RESIN MOLDED ARTICLE

An object of the present invention is to provide a technique by which, when producing a resin molded article using an insert member having low pressure resistance, molding can be easily performed, and deformation of the insert member can be suppressed. A method for producing a resin molded article of the present invention, the method includes the steps of disposing an insert member in a cavity of a mold; performing injection of molten resin into the cavity; terminating the injection on and after the molten resin reaches an overflow portion in the cavity and before the molten resin fills the overflow portion; and separating resin in the overflow portion. 1. A method for producing a resin molded article , the method comprising the steps of:disposing an insert member in a cavity of a mold;performing injection of molten resin into the cavity;terminating the injection on and after the molten resin reaches an overflow portion in the cavity and before the molten resin fills the overflow portion; andseparating resin in the overflow portion.2. The method for producing a resin molded article according to claim 1 , wherein the insert member is one or more tubes.3. The method for producing a resin molded article according to claim 2 , wherein claim 2 , under compression load of 100 gf per 1 cm of a length of the tubes by a pressure element claim 2 , the tubes have a height in a direction of compression of 7/10 or less of a height in the direction of compression prior to applying the compression load.4. The method for producing a resin molded article according to claim 1 , wherein the insert member is an electronic component having a hollow portion.5. The method for producing a resin molded article according to claim 1 , wherein a molding temperature is 100° C. or higher and 250 ° C. or lower.6. The method for producing a resin molded article according to claim 1 , wherein a pressure of the injection is 0.1 MPa or more and 50 MPa or less.7. The method for producing a resin ...

METHODS FOR CONTROLLING INJECTION MOLDING PROCESSES BASED ON ACTUAL PLASTIC MELT PRESSURE OR CAVITY PRESSURE

A method for controlling an injection molding process based upon an actual plastic melt pressure including identifying an optimal actual plastic melt pressure curve over time based on a baseline cycle, and adjusting in a subsequent cycle an injection pressure in order to cause a monitored pressure of the molten thermoplastic material to follow the optimal actual plastic melt pressure curve over time. A method for controlling an injection molding process based upon an plastic melt pressure setpoint adjusted using a cavity pressure, wherein the cavity pressure is multiplied by a process factor. Further, a method for controlling an injection molding process using real time cavity pressure including identifying an optimal cavity pressure curve over time based on a baseline cycle and adjusting, in a subsequent cycle, an injection pressure in order to cause a monitored cavity pressure to follow the optimal cavity pressure curve over time. 1. A method for controlling an injection molding process based upon an actual plastic melt pressure , the method comprising:injecting molten thermoplastic material into a mold cavity during a baseline cycle;measuring, using a sensor in or near a nozzle, a pressure of the molten thermoplastic material during the baseline cycle;tracking, by a controller, the measured pressure of the molten thermoplastic material over time during the baseline cycle;identifying, by the controller, an optimal actual plastic melt pressure curve over time based on the baseline cycle;injecting molten thermoplastic material into the mold cavity during a subsequent cycle;monitoring, using the sensor in or near the nozzle, the pressure of the molten thermoplastic material during the subsequent cycle; andadjusting, by the controller, an injection pressure in order to cause the monitored pressure of the molten thermoplastic material during the subsequent cycle to follow the optimal actual plastic melt pressure curve over time.2. The method of claim 1 , wherein the ...

Process and apparatus for making tufted article

A process for making a tufted article from a thermoplastic material comprises controlling injection pressure according to a pressure-dominated algorithm including detecting at least 100 melt-pressure measurements per second upstream a front end of a mold cavity. An apparatus comprises a pressure-control mechanism for monitoring and adjusting an injection pressure according to the pressure-dominated algorithm, wherein the pressure-control mechanism comprises at least one high-frequency pressure sensor located upstream the mold cavity's front end.

INJECTION MOLDING FLOW CONTROL APPARATUS AND METHOD

An apparatus for controlling the rate of flow of a fluid mold material comprising: 1. An apparatus for controlling the rate of flow of a fluid mold material from an injection molding machine to a cavity of a mold , the apparatus comprising: an actuator interconnected to a valve pin having a tip end, the actuator moving the valve pin upstream along a path of travel between a downstream gate closed position and one or more intermediate upstream gate open positions, the downstream gate closed position being a position wherein the tip end of the valve pin obstructs the gate to prevent fluid material from flowing into the mold cavity, the one or more intermediate upstream gate open positions being predetermined positions between the downstream gate closed position and a fully open, end of stroke position upstream of the intermediate upstream gate open position at which the fluid mold material flows at a maximum rate through the gate, wherein the gate is partially open when the valve pin is in the one or more intermediate upstream gate open positions;', 'a position sensor that senses position of the valve pin,', 'a controller interconnected to the actuator and to the position sensor that controls movement of the actuator at least in part according to instructions that instruct the actuator to drive the valve pin upstream at one or more selected intermediate velocities over the course of travel of the valve pin through the one or more intermediate upstream gate open positions in response to receipt by the controller of a signal from the position sensor that the valve pin is disposed in the one or more intermediate upstream gate open positions,', 'the valve pin being drivable at a maximum upstream velocity, the one or more selected intermediate velocities being less than the maximum velocity., 'a manifold receiving the injected fluid mold material, the manifold having a delivery channel that delivers the fluid mold material to a gate to the mold cavity;'}2. The apparatus of ...

CLOSED LOOP CONTROL OF AUXILIARY INJECTION UNIT

A method and apparatus of controlling commencement of an injection of a melt stream of moldable material from an auxiliary injection unit. A sensor is placed in an injection molding system to sense a condition related to an injection of a first melt stream of a first moldable material provided by a primary injection unit. Commencement of a second melt stream of a second moldable material from the auxiliary injection unit is initiated upon the sensed condition related to the injection of the first melt stream being detected at a preselected value. The sensed condition may be a pressure, velocity or temperature of the first melt stream as provided by a direct sensor, a force or strain on a hot runner component as provided by an indirect sensor or the occurrence of a function of the injection molding system as provided by a functional sensor. 1. A method of injection molding , the method comprising:monitoring a condition related to an injection of a first melt stream of moldable material from a primary injection unit having a primary injection unit controller with a sensor in communication with a secondary injection unit controller; andsignaling a secondary injection unit with the secondary injection unit controller to adjust an injection of a second melt stream of moldable material from the secondary injection unit in response to the monitored condition of the first melt stream.2. The method of injection molding according to claim 1 , wherein the monitoring the condition related to the injection of the first melt stream of moldable material comprises measuring the condition related to the injection of the first melt stream at preset time intervals.3. The method of injection molding according to claim 1 , further comprising:adjusting the injection of the second melt stream of moldable material to be proportionate to the injection of the first melt stream of moldable material.4. The method of injection molding according to claim 1 , further comprising:determining ...

Multi-layer injection molded container

A method for manufacturing an injection molded container includes operating an injection molding apparatus to inject one or more polymeric materials into a mold cavity to form a container. The container includes an energy director ring protruding from an inside surface of the container and extending circumferentially along the inside surface. The method includes welding a filter onto the inside surface by applying a welding force to the inside surface. The energy director ring causes the welding force to be concentrated at a location of the energy director ring, thereby forming a circumferential weld that secures the filter to the inside surface the location of the energy director ring.

DEVICE FOR ASSISTING MOLDING CONDITION DETERMINATION AND INJECTION MOLDING APPARATUS

A device for assisting molding condition determination includes a molding state data adjustment amount obtaining unit and a molding condition element adjustment amount obtaining unit. The molding state data adjustment amount obtaining unit obtains, using a first learning model, a molding state data adjustment amount having a value equivalent to a difference between molding state data detected by a sensor and a molding state data target value. The molding condition element adjustment amount obtaining unit obtains, using a second learning model, an adjustment amount for a molding condition element corresponding to the molding state data adjustment amount. 1. A device for assisting molding condition determination and for use with a molding method that molds an article by feeding molten material into a cavity of a mold of a molding apparatus , the device comprising:a first learning model storage unit that stores a first learning model created through machine learning in which at least molding state data detected during molding of the article by a sensor attached to the molding apparatus is used as first learning data, the first learning model relating to the molding state data and a quality element of the molded article;a second learning model storage unit that stores a second learning model created through machine learning in which the molding state data and a molding condition element are used as second learning data, the second learning model relating to the molding state data and the molding condition element;a molding state data adjustment amount obtaining unit that obtains, using the first learning model, a molding state data adjustment amount having a value equivalent to a difference between the molding state data detected by the sensor and a molding state data target value; anda molding condition element adjustment amount obtaining unit that obtains, using the second learning model, an adjustment amount for the molding condition element corresponding to the ...

External sensor kit for injection molding apparatus and methods of use

Embodiments within the scope of the present disclosure are directed to external sensor kits that may be included in new injection molds or retrofitted into existing injection molds in order to approximate conditions within a mold, such as pressure or the location of a melt flow front. Such kits are designed to amplify meaningful measurements obtained by the external sensor kit so that noise measurements do not prevent the approximation of conditions within a mold. In some embodiments within the scope of the present disclosure, an external sensor kit includes a strain gauge sensor, a coupon, a support bracket, and a hammer. The strain gauge sensor is placed on a surface of the coupon and measures the strain in the coupon.

Closed Loop Control for Injection Molding Processes

Systems and approaches for controlling an injection molding machine having a mold forming a mold cavity and being controlled according to an injection cycle include extruding a molten polymer according to an extrusion profile and measuring at least one variable during the extrusion profile with a first sensor. At least one extrusion operational parameter is adjusted based on the measured variable. The extrusion profile is terminated upon the molten polymer exceeding a first threshold, and the molten polymer is injected into the mold cavity according to an injection profile via a screw that moves from a first position to a second position. Upon completion of the injection profile, a recovery profile commences in which the screw is moved to the first position. 1. An injection molding machine comprising:an injection unit having a mold forming a mold cavity and a screw that moves from a first position to a second position, the injection unit adapted to receive and inject a molten plastic material into the mold cavity via the screw to form a molded part;a controller adapted to control operation of the injection molding machine according to an injection cycle;a first sensor coupled to the injection molding machine and the controller, the first sensor adapted to measure at least one variable during an extrusion profile; adjust, during the extrusion profile, at least one extrusion operational parameter of the injection molding machine based on the at least one measured variable measured from the first sensor,', 'terminate the extrusion profile upon the molten polymer exceeding a first threshold,', 'inject the molten polymer into the mold cavity according to an injection profile using a screw that moves from a first position to a second position, and', 'upon completion of the injection profile, commence a recovery profile in which the screw is moved to the first position., 'wherein the controller is adapted to2. The injection molding machine of claim 1 , further comprising a ...

A STACK MOLD

There is provided a mold stack (). The mold stack () comprises a core insert assembly (), the core insert assembly () for defining an inner portion of a molded article to be molded. The core insert assembly () includes a sensor assembly () configured to measure the in-mold pressure using entire active surface of the core insert assembly (). 1100. A mold stack () comprising:{'b': 102', '102', '102', '120', '102, 'a core insert assembly (), the core insert assembly () for defining an inner portion of a molded article to be molded, the core insert assembly () including a sensor assembly () configured to measure the in-mold pressure using entire active surface of the core insert assembly ().'}2100102122106106122. The mold stack () wherein the core insert assembly () comprises a core inner part member () and a core insert () , the core insert () for defining a portion of a molded article and the core inner part member () for attachment to a core plate.3100122106. The mold stack () of claim 2 , wherein the core inner part member () and the core insert () ate coupled via a threaded connection.4100120124122125124. The mold stack () of claim 1 , wherein the sensor assembly () comprises a load cell () attached to the core inner part member () and a load cell cover () configured to physically envelope a portion of the load cell ().51001021221061061229124122106. The mold stack () of claim 4 , wherein the core insert assembly () comprises a core inner part member () and a core insert () claim 4 , the core insert () for defining a portion of a molded article and the core inner part member () for attachment to a core plate claim 4 , and wherein the load cell ) is sandwiched in-between the core inner part member () and the core insert ().6100122106. The mold stack () of claim 5 , wherein the core inner part member () and the core insert () ate coupled via a threaded connection.7100124. The mold stack () of claim 4 , wherein the load cell () comprises a pressure transducer.8120106. ...

Injection molding machine and screw control method for injection molding machine

An injection molding machine includes: a screw inserted in an injection cylinder and configured to be movable in the axial direction; a motor configured to move the screw; a torque detection unit configured to detect the torque of the motor; a position detection unit configured to detect the position of the screw; a motor drive control unit configured to drive the motor while imposing torque limitation so that the motor's torque will not exceed a limit torque, to thereby advance the screw to the foremost position in the direction of injection; and a determination unit configured to determine that unmelted resin remains inside the injection cylinder if the moving speed of the screw becomes lower than or equal to a predetermined speed while the screw is advancing to the foremost position.

Injection Molding Machines and Methods for Accounting for Changes in Material Properties During Injection Molding Runs

A method and a machine account for changes in material properties of molten plastic material during an injection run. A change in a control signal is calculated by a controller during the injection molding run. If the change in the control signal indicates a change in material flowability, the controller alters a target injection pressure to ensure that molten plastic material completely fills and packs a mold cavity to prevent part flaws such as short shots or flashing. 1. A method of automatically adjusting an injection molding process to compensate for variations in the flowability of a molten plastic material , the method comprising:providing an injection molding machine with at least one mold cavity;providing an injection molding controller, which includes a pressure control output that is configured to provide a control signal, which, at least partially determines an injection molding pressure for the injection molding process of the injection molding machine;measuring a first control signal from the pressure control output at a first time in an injection molding cycle;measuring a second control signal from the pressure control output at a second time in the injection molding cycle, subsequent to the first time;comparing the first control signal from the pressure control output and the second control signal from the pressure control output to obtain a comparison result; anddetermining a third control signal for the pressure control output, based at least in part on the comparison result, at a third time that is subsequent to the second time.2. The method of claim 1 , wherein the determining includes determining the third control signal at a third time claim 1 , which is within the same injection molding cycle as the second time.3. The method of claim 1 , wherein the third time is located in a subsequent molding cycle from the second time.4. The method of claim 1 , including:determining a time difference between the first time and the second time; andwherein ...

APPARATUS AND METHOD FOR DETECTING A POSITION OF AN ACTUATOR PISTON

Apparatus and method for detecting a position of an actuator piston driving a valve pin in an injection molding system. The apparatus includes an actuator housing having a body portion, surrounding an axial bore, of a substantially non-magnetic and/or magnetically permeable material, a piston, movable within the axial bore for driving a valve pin, the piston including a magnetic member generating a magnetic field such that axial movement of the piston in the bore modifies the magnetic field according to the position of the piston relative to a detection position, and a magnetic field detector attached to an exterior surface of the body portion at the detection position for detecting the magnetic field associated with the position of the piston and generating an output signal determined by the piston position. 1. A control system of an injection molding system for implementing a molding process , comprising:a control system that controls movement of a valve pin over the course of an injection cycle in accordance with a set of predetermined process parameters, wherein during an injection cycle a nozzle feeds fluid material into a cavity of the mold and the valve pin, driven by an associated actuator, opens and closes a gate into the cavity,a position sensor associated with the valve pin for monitoring a plurality of actual pin positions with respect to the gate and generating an output signal indicative of the plurality of actual pin positions as the valve pin moves between gate closed and gate open positions,wherein, during an injection cycle, the fluid material is fed to the nozzle at one or more predetermined times, starting by opening the valve pin at an opening time and allowing the fluid material to flow into the cavity and wherein the fluid material injected from the nozzle forms a molded part in the cavity,the control system being configured to receive and process the output signal from the associated position sensor to determine, from the plurality of actual ...

INJECTION MOLDING FLOW CONTROL APPARATUS AND METHOD

A method and apparatus for performing an injection molding cycle comprising drivably interconnecting a valve pin to an electric motor actuator and controllably operating the electric motor to drive the valve pin at one or more reduced rates of upstream or downstream travel based on either detection of the position of the pin or actuator or on a preselected length of time at which to drive the valve pin. 1. A method of performing an injection molding cycle in an injection molding apparatus comprising a manifold that receives an injection fluid , the manifold distributing injection fluid to a fluid delivery channel that delivers the injection fluid under an injection pressure to a gate of a mold cavity and a valve pin having an axis and a tip end , the valve pin being slidably mounted for movement along the axis within the fluid delivery channel , the method comprising:drivably interconnecting the valve pin to an electric motor driven by a source of electrical power or energy in an arrangement wherein the electric motor drives the valve pin along the axis and drives the tip end of the valve pin between a first position where the tip end of the valve pin obstructs the gate to prevent the injection fluid from flowing into the cavity, a fully open position where the injection fluid material flows at a high rate of flow through the first gate, a second position upstream of the first position and downstream of the fully open position wherein the tip end of the valve pin restricts flow of the injection fluid through the gate to an intermediate rate of flow less than the high rate of flow at least during the course of travel of the valve pin between the first position and the second position,the electric motor being electrically operable to drive the valve pin at one or more intermediate rates of upstream and downstream travel extending between zero and a maximum rate of upstream travel and a maximum rate of downstream travel,controllably operating the electric motor to ...

CONTROLLED VALVE PIN MOVEMENT BASED ON CAVITY SENSOR FEEDBACK

Apparatus and method for performing an injection molding cycle in an injection molding apparatus where the apparatus comprises: 1. A method of performing an injection molding cycle in an injection molding apparatus comprised of:a manifold that receives an injection fluid material, the manifold having or communicating with a delivery channel that delivers the injection fluid mold material under an injection pressure to two or more gates each leading to an associated mold cavity,an actuator associated with each respective gate,each actuator being drivably interconnected to a valve pin drivable upstream and downstream along a path of travel having a selected stroke length that extends between a gate closed position, a selected maximum flow position at which the injection fluid material flows at a maximum rate through the gate into the cavity and one or more selectable intermediate positions between the first position and the maximum flow position,each actuator being controllably drivable to position an interconnected valve pin at the first, one or more selectable intermediate and maximum flow positions over the course of an injection cycle,a downstream sensor that senses a selected physical condition of the injection fluid material at a position within a mold cavity that is downstream of an associated gate, the downstream sensor generating a signal corresponding to the sensed values,the method comprising the steps of:selecting and recording as a standard for a selected one of the gates, the amount of time elapsed between movement of the valve pin associated with the selected one of the gates out of the gate closed position and the time at which the downstream sensor first senses the selected condition of the injection fluid material flowing into the associated mold cavity,performing a subsequent injection cycle for each of the other gates and sensing the selected physical condition of the injection fluid material at the downstream position with the downstream sensor ...

PRESSURE SENSOR FOR A METAL OR PLASTICS PROCESSING TOOL

A space-saving pressure sensor for a metal or plastics processing tool is configured to perform date stamping during injection molding with the processing tool. The pressure sensor is configured to be inserted into a single drilled hole of the tool. A first cast-compatible mark and a second cast-compatible mark of the pressure sensor may be adjusted against one another in such a way that a variety of different date marks can be created, which may then be applied to different injection-molded products. The pressure sensor may be used within the framework of manufacturing an injection-molded product. 1. Pressure sensor for a metal or plastics processing tool , comprising:a) a sensor housing, that can be connected to the tool;b) a pressure transducer arranged within the sensor housing;c) wherein the pressure sensor has a first front face with a first cast-compatible mark;d) wherein the pressure sensor additionally has a second front face with a second cast-compatible mark; ande) wherein the first front face and the second front face are adjustable against one another.2. The pressure sensor according to claim 1 , wherein the first front face is operatively connected to the pressure transducer.3. The pressure sensor according to claim 1 , wherein the second front face completely surrounds the first front face.4. The pressure sensor according to claim 1 , wherein the first front face and the second front face are substantially arranged in a common plane.5. The pressure sensor according to claim 1 , wherein the second front face with the second cast-compatible mark is arranged on a bushing.6. The pressure sensor according to claim 5 , wherein the bushing is in contact with the sensor housing.7. The pressure sensor according to claim 6 , wherein the bushing is fixedly connected to the sensor housing.8. The pressure sensor according to claim 1 , further comprising an adjustment element claim 1 , wherein the first front face is arranged on the adjustment element such that the ...

METHOD FOR EVENLY DISTRIBUTING PLASTIC MELT IN A HOT RUNNER SYSTEM USING STRAIN GAUGES

A hot runner injection molding apparatus, and method of use, is disclosed in which strain gauges are provided in the temperature zones of the hot runner injection molding apparatus and a hot runner controller creates a target strain profile, detects deviations from the target strain profile in any temperature zone based on the strain readings provided by the strain gauges in each temperature zone, and instructs correction of deviations from the target strain profile in any deviating temperature zone by adjusting the heat produced by a heater or heaters in the deviating temperature zone. The target strain profile may be based on a median or average of strain readings provided over time by the strain gauges in each temperature zone. A hollow installation tube for placing the strain gauges in the hot runner injection molding apparatus is also disclosed. 112-. (canceled)13. A method of evenly distributing molten thermoplastic material to multiple cavities using a hot runner system in a molding apparatus comprising:creating, by one or more processors, a target strain profile for a molding process of a molding apparatus;receiving, by the one or more processors, strain readings reflecting changes in strain during a molding process as an output from at least one strain gauge in each of a plurality of temperature zones of the molding apparatus,monitoring, by the one or more processors, the strain readings for each temperature zone in order to detect a deviation from the target strain profile by a temperature zone;if a deviation is detected, determining, by the one or more processors, whether the deviation exceeds a deviation limit;if the deviation exceeds a deviation limit, adjusting heat produced by one or more heaters in the deviating temperature zone in order to correct the deviation,and amplifying the changes in strain sensed by at least one of the at least one strain gauge in each of the plurality of temperature zones using an alternative material insert filling an ...

DETERMINING AND VISUALIZING PROCESS PARAMETER VALUES IN AN INJECTION MOULDING PROCESS

The invention describes a method of determining and visualizing process parameter values of an injection moulding process, which method comprises the steps of determining geometric data of the injection mould (F) and/or of a form part () to be manufactured in the injection mould (F), carrying out an injection moulding process using the injection mould (F) and recording measurement values as a function of the injection time and/or an actuator position (s), determining, as process parameter values on the basis of the measurement values and geometry data of the injection mould (F), a flow front position inside the injection mould (F) or the form part () as a function of the injection time and/or an actuator position. The invention further describes a corresponding process parameter value determining apparatus () and an injection mould arrangement () with such a process parameter value determining arrangement (). 1. Method of determining and visualizing process parameter values of an injection moulding process , which method comprises the steps of{'b': 1', '1', '1', '1', '1, 'determining geometric data of the injection mould (F) and/or of a form part (, ′, ″) to be manufactured in the injection mould (F),'}{'b': '1', 'carrying out an injection moulding process using the injection mould (F) and recording measurement values as a function of the injection time and/or an actuator position (s),'}{'b': 1', '1', '1', '1, 'determining, as process parameter values on the basis of the measurement values and geometry data of the injection mould (F), a flow front position inside the injection mould (F) or the form part (′, ″) as a function of the injection time and/or an actuator position and, as appropriate, a flow front rate as a function of the flow front position,'}optionally determining further process parameter values as a function of the injection time and/or the actuator position (s) and/or the flow front position,{'b': '31', 'showing at least part of the determined process ...

Actuator apparatus and method enabling multiple piston velocities

An injection molding apparatus comprising a manifold, an actuator having a piston that divides an enclosed actuator housing into upstream and downstream actuator drive chambers, the piston having an internal piston chamber and a piston bore that communicates flow of the drive fluid between one of the upstream or downstream actuator drive chambers and the internal piston chamber, a flow rate controller adapted to enable flow of drive fluid between one of the upstream or downstream actuator drive chambers and a source of drive fluid at a first low rate of flow over a selected first portion of the stroke length of the piston and at a second high rate of flow over a selected second portion of the stroke length of the piston.

SYSTEMS AND METHODS FOR CONTROLLING INJECTION MOLDING USING PREDICTED CAVITY PRESSURE

In order to improve the consistency of molded products as viscosity shifts throughout a run, a controller of an injection molding machine executes a calibration cycle in accordance with a mold cycle. The controller analyzes a plurality of sensed melt pressure values during the calibration cycle to determine one or more calibration metrics. The controller then uses the calibration metrics when executing each mold cycle of the run. More particularly, during each mold cycle of the run, the controller detects a plurality of sensed melt pressures prior to and during a fill phase of the mold cycle and compares the plurality of sensed melt pressures to the one or more calibration metrics to predict cavity pressure for a pack and hold phase of the mold cycle. The controller then adjusts a set point pressure for the pack and hold phase based on the predicted cavity pressure. 1. An injection molding system comprising: 'a pressure sensor configured to sense a melt pressure of a thermoplastic material; and', 'an injection molding machine including execute a calibration cycle in accordance with a mold cycle using the injection molding machine;', 'analyze a plurality of melt pressure values sensed by the pressure sensor during the calibration cycle to determine one or more calibration metrics;', 'execute a mold cycle run using the injection molding machine; and', detect a plurality of melt pressure values sensed by the pressure sensors prior to and during a fill phase of the mold cycle;', 'compare the plurality of sensed melt pressures to the one or more calibration metrics to predict a cavity pressure during a pack and hold phase of the mold cycle; and', 'adjust a set point melt pressure for the pack and hold phase of the mold cycle., 'during each mold cycle of the run], 'a controller operatively connected to the injection molding machine, the controller configured to2. The injection molding system of claim 1 , wherein the injection molding machine does not include a sensor ...

INJECTION MOLDING FLOW CONTROL APPARATUS AND METHOD

An apparatus for controlling the rate of flow of mold material to a mold cavity, the apparatus comprising: an injection molding machine and a manifold; an actuator interconnected to a valve pin having a tip end; a valve system in fluid communication with the actuator to drive the actuator at one or more rates of travel, the valve system having a start position, one or more intermediate drive rate positions and a high drive rate position, the start position holding the valve pin in a gate closed position; a controller that instructs the valve system to move from the start position to the one or more intermediate drive rate positions and to remain in the one or more intermediate drive rate positions for one or more corresponding predetermined amounts of time. 1. A method of performing an injection molding cycle in an injection molding apparatus comprising:an injection molding machine and a manifold that receives an injected mold material from the injection molding machine, the manifold having a delivery channel that delivers the mold material under an injection pressure to a first gate of a mold cavity,an actuator interconnected to a valve pin driving the valve pin from a first position where the tip end of the valve pin obstructs the gate to prevent the injection fluid material from flowing into the cavity, upstream to a second position upstream of the gate where the mold material flows at a maximum rate through the gate and continuously upstream from the start position through one or more intermediate positions between the first position and the second position wherein the tip end of the valve pin restricts flow of the injection fluid to one or more rates less than the maximum rate,a drive system for controllably driving the actuator and the valve pin upstream at one or more selected intermediate velocities and at one or more high velocities that are higher than the intermediate velocities,the method comprising:beginning an injection cycle with the tip end of the ...

Method And Apparatus For Injection Molding Of Plastic Materials

A method for injection molding of plastic materials into a cavity of a mold by means of a molding apparatus including at least one injector having a pin valve displaceable between a fully closed position and a maximum opening position, and vice versa, in a controlled fashion in respect of its position and speed. In the opening displacement from the fully closed position to the maximum opening position, the pin valve is initially moved at a first speed and subsequently at a second speed, where the first speed is the highest opening displacement speed of the pin valve.

INJECTION FOAM MOLDING MACHINE

An injection foam molding machine of the invention includes: a movable mold platen; a fixed mold platen; a mold fastening hydraulic cylinder that is provided at each of four corners of both mold platens; a tie bar that is driven by the hydraulic cylinder to fasten the molds; two sets of mold opening and closing actuators that drive the movable mold platen to move close to or away from the fixed mold platen; two sets of dedicated core back devices; and a control device that controls the two sets of mold opening and closing actuators and the two sets of dedicated core back devices, wherein the control device includes a dedicated core back program that simultaneously controls the two sets of mold opening and closing actuators and the two sets of dedicated core back devices during a foaming core back operation of moving the movable mold platen away from the fixed mold platen.

Molding machine

A die casting machine includes a plurality of ejector pins capable of advancing and retracting together with respect to the internal portion of a die; an electric motor capable of driving the plurality of ejector pins; a position sensor capable of detecting the positions of the plurality of ejector pins; a force sensor capable of detecting the pressure which is given to the molding material inside the die by the plurality of ejector pins; a display device capable of displaying images, and a control device controlling the electric motor and display device. The control device includes a drive control part which controls the electric motor so as to generate a driving force making the plurality of ejector pins advance to the inside of the die after the start of injection and before die opening, and a display control part which controls the display device so as to display the position detected by a position sensor and the pressure detected by a force sensor along a common time axis.

METHOD FOR OPERATING AN INJECTION MOULDING MACHINE

A method is described for operating an injection moulding machine, which has one or more movable machine parts which can be moved by suitable drives along specifiable travelling distances. Movement of a movable machine part is repeated cyclically. In order to reduce the movement times of the movable machine parts to a minimum, provision is made for one or more of the movable machine parts to successively reduce the power reserves of one or more of the drives associated with a movable machine part, until a specifiable minimum of power reserve is reached, wherein the minimum can be zero. In each cycle, the power reserve of the drive or drives is determined and is successively reduced, in particular from cycle to cycle. A movable platen, an ejector, a core puller, a plasticizing screw and/or an injection piston can be provided as movable machine part. 120.-. (canceled)21. A method for operating an injection moulding machine including one or more movable machine parts , comprising:determining and successively reducing a power reserve of a drive operably connected to a movable platen until reaching a specified minimum of the power reserve for the drive as the movable platen, which has fastened thereto a moulding part of an injection moulding tool and is moved cyclically and repeatedly along a specified traveling distance toward and away from a fixed platen between a closing position and an opening position of the injection molding tool, has reached an end position or an opening position;defining the specified traveling distance on the basis of a course of a desired speed of the movable platen;successively altering the desired speed according to the available power reserves by successively reducing a travel time for covering the specified traveling distance so as to reduce a movement time of the movable platen, sufficient for each case of application of a clamping unit of the injection moulding machine; anddefining each case of application by a particular weight of the ...

INJECTION MOLDING MACHINE AND FLASH PREVENTION METHOD

When an injection molding machine performs molding, the mold clamping force on the mold is adjusted on the basis of a mold displacement of the mold or the injection peak pressure and injection foremost position so that the molding is performed without causing flash and by an appropriate mold clamping force with which energy can be reduced. The amount of mold displacement and also the injection peak pressure and the injection foremost position are monitored during automatic operation. If there occurs no mold displacement change exceeding a threshold or if there occurs no injection peak pressure anomaly or injection foremost position anomaly exceeding thresholds, the automatic operation is continued. If the mold displacement change occurs or if the injection peak pressure anomaly and the injection foremost position anomaly occur, the operation of the injection molding machine is stopped. 1. A flash prevention method of an injection molding machine configured to close a mold and apply a mold clamping force thereto to perform mold clamping by a mold clamping unit and perform injection filling of a molten resin into the mold by an injection unit , the flash prevention method comprising:presetting an allowable amount where no flash occurs as a threshold for an amount of mold displacement of the mold, and presetting allowable amounts where no flash occurs as thresholds for an injection peak pressure and an injection foremost position;monitoring the amount of mold displacement and monitoring the injection peak pressure and the injection foremost position during automatic operation of repeating a molding cycle; andif a mold displacement change occurs or an injection peak pressure anomaly and an injection foremost position anomaly occur, stopping operation of the injection molding machine.2. The flash prevention method according to claim 1 , comprising a mold clamping force automatic adjustment step claim 1 , if a molding cycle where the mold displacement change does not ...

INJECTION MOLDING MACHINE FOR CONTINUING OPERATION IN EVENT OF POWER OUTAGE

In an injection molding machine, a control instruction value change unit decreases a control instruction value for each axis when a power outage is detected by a power outage detection unit and returns the control instruction value for each axis to an original value when a power recovery is detected by the power outage detection unit. 1. A control device for an injection molding machine for continuing operation in the event of a power outage and driving an axis by a servo-motor , comprising:a driving device configured to drive the servo-motor;a power outage detection unit configured to detect a power outage of a power supply to the driving device;a molding operation control unit configured to control a molding operation;a control instruction value change unit configured to, instruct a change of a control instruction value output from the molding operation control unit to the driving device for each axis to the molding operation control unit, and,output an instruction of decreasing the control instruction value for each axis when the power outage detection unit detects a power outage and output an instruction of returning the control instruction value for each axis to an original value to the molding operation control unit when the power outage detection unit detects a power recovery.2. The control device for an injection molding machine for continuing operation in the event of a power outage according to claim 1 ,wherein the control instruction value change unit is configured to decrease a pressure instruction value for an axis subjected to a pressure control and decrease a speed instruction value for an axis other than the axis subjected to the pressure control, when the power outage detection unit detects a power outage.3. The control device for an injection molding machine for continuing operation in the event of a power outage according to claim 1 ,wherein the molding operation control unit is configured to stop the molding operation when the power outage ...

VALVE SYSTEM IN AN INJECTION MOLDING SYSTEM

An injection molding apparatus including: 1. An injection molding apparatus comprising an injection molding machine , a manifold that receives injection fluid from the machine and routes the injection fluid during the course of an injection cycle from an upstream end toward a downstream end of a fluid flow channel disposed in the manifold or a nozzle communicating with the manifold , the fluid flow channel having a flow axis and a channel length , the fluid flow channel communicating at the downstream end with a gate to a cavity of a mold , the apparatus including:a valve pin driven by an actuator, the valve pin extending axially through at least a portion of the channel length of the fluid flow channel, the valve pin having an upstream end interconnected to the actuator and a downstream end, the valve pin being drivable by the actuator axially upstream and downstream through the fluid flow channel,the fluid flow channel including a throat having an inner circumferential surface having a selected throat configuration and throat diameter,the valve pin having bulbous portion having an outer circumferential surface and a bulb diameter adapted to interface with the inner circumferential surface of the throat to enable a restricted degree of volume or velocity of flow of injection fluid relative to a maximum degree of volume or velocity of flow when the bulbous portion of the valve pin is axially aligned with the throat,the valve pin being drivable to a maximum downstream position where a distal tip end of the valve pin closes the gate and stops flow of the injection fluid through the gate.2. The apparatus of wherein:the actuator is driven by a valve assembly comprised of a housing and a spool slidably mounted and controllably movable back and forth along an axis within the housing between two or more drive fluid flow positions,the spool being mechanically driven by first and second actuators or solenoids that each separately engage the spool at opposing axial ends to ...

INJECTION MOLDING OF CROSSLINKING POLYMERS

Non-time dependent measured variables are used to effectively determine an optimal hold profile for an expanding crosslinking polymer part in a mold cavity. A system and/or approach may first inject molten expanding crosslinking polymer into a mold cavity, then measure at least one non-time dependent variable during an injection molding cycle. Next, the system and/or method commences a hold profile for the part, and upon completing the hold profile, the part is ejected from the mold cavity, whereupon a cure profile is commenced. 1. An expanding crosslinking polymer injection molding system comprising:an injection molding machine comprising an injection unit and a mold forming a mold cavity, the injection unit adapted to receive and inject a molten expanding crosslinking plastic material into the mold cavity to form a molded part;a controller adapted to control operation of the injection molding machine; andone or more sensors coupled to the injection molding machine and the controller;wherein at least one of the one or more sensors is adapted to measure at least one non-time dependent variable during the injection mold cycle, wherein the controller is adapted to commence a hold profile for the expanding crosslinking polymer part and is further adapted to cause the molded part to be ejected from the mold cavity upon completing the hold profile and commence a cure profile for the molded part.2. The system of claim 1 , wherein the controller commences the hold profile by commencing the hold profile when the measured at least one non-time dependent variable reaches a first threshold value claim 1 , restricting additional molten expanding crosslinking polymer from being injected into the mold cavity claim 1 , and terminating the hold profile when the measured at least one non-time dependent variables reaches a second threshold value.3. The system of claim 2 , wherein the first threshold value is indicative of the mold cavity being substantially full of molten expanding ...

MOLD CLAMPING DEVICE OF INJECTION MOLDING MACHINE AND METHOD OF ADJUSTING MOLD THICKNESS OF MOLD CLAMPING DEVICE

A mold clamping device of an injection molding machine includes a mold clamping shaft fixed to a movable platen, a mold clamping ram to press the mold clamping shaft against a fixed platen, a ram position detecting member that detects a position of the mold clamping ram, an encoder detecting a position of the movable platen, a ram position control member that hydraulically controls a position of the mold clamping ram, a storage unit storing a difference value of mold closing positions of the movable platen before and after mold replacement, and a control unit. The control unit calculates the difference value when mold thickness adjustment is performed, calculates a movement position of the mold clamping ram based on a current position of the mold clamping ram and the difference value, moves the mold clamping ram to the movement position, and stops the mold clamping ram to perform mold clamping. 1. A mold clamping device of an injection molding machine comprising:a mold clamping shaft integrated with a mold opening/closing nut, the mold opening/closing nut is adapted to be moved by rotating a mold opening/closing screw shaft to perform opening and closing of a movable platen;a mold clamping ram incorporated in a support platen pressing the mold clamping shaft, the mold clamping ram hydraulically performing mold clamping of the movable platen, whereinthe mold clamping shaft includes annular convex parts at a constant pitch on an outer circumference thereof,a half nut device incorporating a half nut which engages with the annular convex parts is coaxially attached to a distal end of the mold clamping ram, andthe mold clamping shaft, the half nut device, and the mold clamping ram are disposed on one shaft,the mold clamping device further comprising:a ram position detecting member which detects a position of the mold clamping ram;an encoder which detects a position of the movable platen;a ram position control member which hydraulically controls the position of the mold ...

MOLD MONITORING FOR UNAUTHORIZED USE

A monitor for a reciprocating tool reporting the removal of the monitor from the tool, for determination of a reason for removal, such as routine maintenance cleaning, unauthorized use of the mold to produce parts, and the like. The reason for removal can be reported to any party, including but not limited to an owner of the mold, an OEM manufacturer, a moldmaker and/or a molder. 1. A method for monitoring a reciprocating tool comprising:positioning a monitor in a mounted position with respect to the reciprocating tool;the monitor recording mold data of the reciprocating tool;detecting a removal of the monitor from the mounted position; andrecording the removal of the monitor from the mounted position.2. The method of further comprising the step of reporting the recorded removal of the monitor from the mounted position to a local storage device and/or a remote storage device.3. The method of further comprising the step of reporting the recorded removal of the monitor from the mounted position to an owner of a mold of the reciprocating tool.4. The method of wherein the recorded removal is reported to the owner in a wired manner and/or a wireless manner.5. The method of wherein an actuation device is moved and detects the removal of the monitor from the mounted position.6. The method of wherein a movable pin is moved and detects the removal of the monitor from the mounted position.7. The method of wherein moving the movable pin opens and/or closes an electrical circuit and triggers the recording of the removed monitor.8. The method of wherein the removed monitor is reported to an owner of a mold of the reciprocating tool.9. The method of wherein a sensor is operated and detects the removal of the monitor from the mounted position.10. The method of wherein operating the sensor opens and/or closes an electrical circuit and triggers the recording of the removed monitor.11. The method of wherein the removed monitor is reported to an owner of a mold of the reciprocating ...

Method for Controlling Valve Gates Using One or More Strain Gauges

A method of monitoring and controlling a sequential valve gate molding apparatus in an injection molding or other molding process is disclosed. The method includes creating a target strain profile, receiving a deviation limit, receiving a change in strain relating to a first valve gate from a first strain gauge, identifying whether a deviation exists from a first portion of the target strain profile based on the output from the first strain gauge, determining whether any existing deviation exceeds the deviation limit, and adjusting the position of a first valve gate pin in the first valve gate if it does. The method may further include control of subsequent valve gates. Multiple strain gauges may be used to control a single valve gate, and/or each strain gauge may control more than one valve gate. 1. A method of monitoring and controlling a sequential valve gate molding apparatus comprising:creating, by one or more processors, a target strain profile for a sequential valve gate molding process of a sequential valve gate molding apparatus, wherein the target strain profile has at least a first portion relating to opening of a first valve gate;receiving, via an interface, an upper deviation limit and a lower deviation limit for the sequential valve gate molding process;receiving, as an output from a first strain gauge, a change in strain in the sequential valve gate molding apparatus relating to the first valve gate;identifying, by the one or more processors, whether a deviation from the first portion of the target strain profile exists based on the sensed change in strain provided as the output from the first strain gauge;when a deviation from the first portion is identified, comparing, by the one or more processors, the deviation from the first portion to the upper deviation limit or the lower deviation limit; andwhen the deviation from the first portion exceeds the upper deviation limit or the lower deviation limit, adjusting a position of a first valve gate piston ...

ELECTRONIC CYCLE COUNTER

A monitor for maintaining a mold cycle count with an actuator sending a count signal to a processor following a mold operation. The monitor further includes a timer having an active mode and a sleep mode. The processor generates an average cycle time and an activity percentage of the mold taking into account active and sleep periods of the mold. 1. A monitor for maintaining a mold cycle count , the monitor comprising:a housing;a processor positioned with respect to the housing;an actuator positioned with respect to the housing, the actuator sending a count signal to the processor following a mold operation;an electronic display positioned with respect to the housing;a timer electronically connected with the processor, the timer having an active mode and a sleep mode;a function button positioned with respect to the housing and electronically connected with the display and the processor to generate on the display a total count, an average cycle time and an activity percentage of the mold.2. The monitor of wherein the processor discards downtime of the mold in excess of a predetermined limit to reach the activity percentage.3. The monitor of wherein the timer activates the sleep mode following mold inactivity exceeding a predetermined threshold.4. The monitor of wherein the processor further generates a recent average cycle time and a recent activity percentage.5. The monitor of wherein the processor further generates an interim cycle count in addition to a total cycle count.6. The monitor of further comprising:a port positioned within the housing and electronically connected with respect to the processor, the port connectable to an external computer.7. The monitor of wherein the actuator is positionable between a released mode and an activated mode claim 1 , the timer tracking the total duration of each of the released mode and the activated mode.8. The monitor of further comprising:a non-transitory, computer readable medium positioned within the housing and ...

Injection molding apparatus with active valve pin disengagement

A hot runner injection molding apparatus ( 10 ) includes hot runner nozzles ( 20 ), a movable frame ( 30 ) that can be displaced between at least two positions relative to a plurality of mold cavities ( 24 ), each cavity having a mold gate ( 27 ). Valve pins ( 32 ) associated with the hot runner nozzles ( 20 ) are individually coupled to the movable frame ( 30 ) by a decouplable connector ( 36, 60 ). Disengagement devices ( 40 ) associated with the valve pins are activated to decouple any associated valve pin ( 32 ) from the movable frame ( 30 ). A control system ( 52 ) is used to activate the disengagement devices ( 40 ). In some instances a blocking element ( 42 ) is also activated to lock any valve pin at the mold gate or close to the mold gate. Control system ( 52 ) is further used to operate the blocking element ( 42 ). Disengagement devices ( 40 ) and the blocking elements ( 42 ) can be the same or different.

DOWNSTREAM PIN VELOCITY CONTROLLED INJECTION MOLDING APPARATUS AND METHOD

An injection molding apparatus comprising: 113.-. (canceled)14. A method for molding a plastic part , the method comprising:providing a valve gated nozzle including a valve stem movable between an open position and a closed position;moving the valve stem at a first speed for a first portion between the open position and the closed position; andmoving the valve stem at a second speed less than a threshold speed for at least a final 2 mm between the open position and the closed position.15. An apparatus for molding a plastic part , the apparatus comprising:a valve gated nozzle including a valve stem movable between an open position and a closed position;a controller including a program having instructions that:instruct the valve stem to move at a first speed for a first portion between the open position and the closed position; andinstruct the valve stem to move at a second speed less than a threshold speed for at least a final 2 mm between the open position and the closed position.16. An injection molding apparatus for controlling velocity or volume of delivery of an injection fluid material through a gate to a cavity of a mold , the apparatus comprising:a pneumatically driven actuator comprising a fluid sealed chamber in which a piston is mounted, the piston being interconnected to a valve pin having a tip end,the piston forming first and second drive chambers within the fluid sealed chamber, each drive chamber having respective fluid flow ports, the piston and valve pin being drivable along a reciprocal path of axial travel having a stroke length that extends on a downstream cycle between a fully upstream gate open position where unrestricted flow of injection fluid material is enabled through a gate to a mold and a fully downstream gate closed position where the valve pin stops flow of the injection material through the gate to the mold,a source of pressurized gas that generates gas flow at a selected maximum pressure or flow rate,a gas metering mechanism disposed ...

CONTROLLER AND MANAGEMENT SYSTEM FOR INJECTION MOLDING MACHINE

A controller of an injection molding machine controls mold clamping of a fixed mold and a movable mold. The controller includes a servomotor drive control unit for limiting increase in driving current during driving of a mold clamping servomotor, and a moving state acquisition unit that acquires a detection signal of an encoder. The controller further includes an abnormality determination processing unit for determining that a clamping force sensor is abnormal when recognizing stoppage of movement of the movable mold during mold clamping, based on the acquired detection signal of the encoder. 1. A controller for an injection molding machine for controlling mold clamping of a fixed mold and a movable mold , comprising:a motor drive control unit configured to control driving current of a motor and limit increase in the driving current during driving of the motor, based on an upper limit of the driving current, the motor being configured to move the movable mold and generate a clamping force;a moving state acquisition unit configured to acquire information on movement of the movable mold;a clamping force acquisition unit configured to acquire information on the clamping force from a clamping force detector configured to detect information on the clamping force with which the fixed mold and the movable mold are clamped;a mold clamping adjusting unit configured to adjust an end-of-clamping position of the movable mold by operating a mold clamping adjustment mechanism based on the information on the clamping force; andan abnormality determination processing unit configured to determine that the clamping force detector is abnormal when recognizing stoppage of movement of the movable mold during mold clamping, based on the information from the moving state acquisition unit.2. The controller for the injection molding machine according to claim 1 , wherein the upper limit of the driving current is a current value that produces a clamping force slightly greater than a ...

INJECTION CONTROL METHOD AND INJECTION CONTROL SYSTEM

An injection control method controls an injection mechanism configured to inject an injection material into a cavity of a mold. The method includes a detection step for detecting that the injection material reaches a predetermined position in the cavity that is away from the injection position, and a change step for changing the injection termination time based on the time period from injection start of the injection material until the detection in the detection step. 1. A injection control method for controlling an injection mechanism that injects injection material into a cavity of a mold , the method comprising:detecting that the injection material has reached a predetermined position in the cavity away from an injection position; andchanging an injection termination time based on a time period from injection start of the injection material until detection that the injection material has reached the predetermined position in the cavity.2. The injection control method as claimed in claim 1 , further comprisingending the injection by the injection mechanism at the changed injection termination time.3. The injection control method as claimed in claim 1 , whereinthe changing the injection termination time includes determining the injection termination time by using a relationship expression representing the relationship between the time period from the injection start of the injection material to the detection that the injection material has reached the predetermined position and a time until a predetermined amount of the injection material is injected into the cavity.4. The injection control method as claimed in claim 1 , whereinthe injection position is located in a gravity center of the injection material which is to be filled in the cavity.5. The injection control method as claimed in claim 1 , whereinthe predetermined position is between the injection position and a flow end at which the injection material injected from the injection position stops flowing.6. ...

ARTIFICIAL INTELLIGENCE-BASED INJECTION MOLDING SYSTEM AND METHOD FOR GENERATING MOLDING CONDITION IN INJECTION MOLDING SYSTEM

An artificial intelligence-based injection molding system comprising a standard data extraction unit for extracting target standard data of a product produced by a mold from mold information about the mold to which a molding material is supplied; a molding condition output unit inputing the extracted target standard data into a pre-learned molding condition generation model to output a molding condition; an injection molding device, supplying the molding material to the mold according to the molding condition to produce the product; and a determination unit, comparing production standard data of the produced product and the target standard data to determine whether the molding condition is appropriate, wherein, if the determination unit determines that the molding condition is inappropriate, the molding condition output unit generates the production standard data and the molding condition as one set of feedback data, and trains the molding condition generation model with the set of feedback data. 1. An artificial intelligence (AI)-based injection molding system comprising:a standard data extraction unit configured to extract target standard data of a product from mold information of a mold to which a first molding material in a melted state is supplied, the product being manufactured through the mold;a molding condition output unit configured to input the extracted target standard data into a pre-trained molding condition generation model and output a molding condition;an injection molding machine configured to supply the first molding material to the mold under the molding condition and manufacture the product; anda determination unit configured to compare manufacturing standard data of the manufactured product with the target standard data and determine whether the molding condition is appropriate,wherein, when the determination unit determines that the molding condition is inappropriate, the molding condition output unit generates one feedback dataset from the ...

METHOD FOR CONTROLLING INJECTION MOLDING MACHINE AND INJECTION MOLDING MACHINE

In an injection molding machine that transmits driving force of a mold opening/closing servo motor to a movable platen via a ball screw to move the movable platen with respect to a stationary platen, and thereafter clamps molds by a mold clamping mechanism, provided is a control method capable of detecting a position of the movable platen at a time of continuous molding and correcting the operation start confirming position. In a method for controlling an injection molding machine that transmits driving force of a mold opening/closing servo motor to a movable platen via a ball screw to move the movable platen with respect to a stationary platen, and thereafter clamps molds by a mold clamping mechanism, other control is performed using a position A of the movable platen, the position A being detected by a position sensor at a time of continuous molding, and the position A of the movable platen is corrected. 1. A method for controlling an injection molding machine that transmits driving force of a mold opening/closing servo motor to a movable platen via a ball screw to move the movable platen with respect to a stationary platen , and thereafter clamps molds by a mold clamping mechanism ,wherein other control is performed using a position of the movable platen, the position being detected by a position sensor at a time of continuous molding, and the position of the movable platen is corrected.2. A method for controlling an injection molding machine that transmits driving force of a mold opening/closing servo motor to a movable platen via a ball screw to move the movable platen with respect to a stationary platen , and thereafter clamps molds by a mold clamping mechanism ,wherein an operation start confirming position of other actuator is confirmed based on a position of the movable platen, the position being detected at a time of continuous molding by a rotary encoder additionally provided on the mold opening/closing servo motor, and the operation start confirming ...

METHOD FOR SETTING UP A MOLDING SYSTEM

The present disclosure provides a method for setting up a molding system, wherein the molding system includes a molding machine and a mold disposed on the molding machine, and the mold has a mold cavity to be filled with a molding resin from the molding machine. The method includes generating first and second state waveforms using a predetermined packing pressure profile; obtaining an updated packing pressure profile based on the first and the second state waveforms; and setting up the molding machine based on the updated packing pressure profile to perform an actual molding process to prepare the molding product. The first and the second state waveforms express a relationship between an in-mold pressure and an in-mold temperature at different sensing sites of the molding resin. 1. A method for setting up a molding system , the molding system comprising a molding machine and a mold disposed on the molding machine , the mold having a mold cavity to be filled with a molding resin from the molding machine , the method comprising:generating first and second state waveforms using a predetermined packing pressure profile, wherein the first and the second state waveforms express a relationship between an in-mold pressure and an in-mold temperature at different sensing sites of the molding resin, and wherein a maximum in-mold pressure of the first state waveform is greater than that of the second state waveform;obtaining an updated packing pressure profile having a first control node and a second control node after the first control node, wherein the first control node has a first packing time at which the first state waveform substantially reaches the maximum in-mold pressure, and wherein the first control node has a first packing pressure and the second control node has a second packing pressure less than the first packing pressure; andsetting up the molding machine based on the updated packing pressure profile to perform an actual molding process for filling the molding ...

METHOD FOR SETTING UP A MOLDING SYSTEM

The present disclosure provides a method for operating a molding system. The molding system includes a molding machine and a mold disposed on the molding machine, wherein the mold has a mold cavity for being filled with a molding material from the molding machine. The method comprises a step of obtaining a predetermined state waveform expressing a predetermined volumetric variation of the molding material. Next, the method further comprises obtaining a measured pressure and a measured temperature of the molding material in the mold cavity while performing a molding process for filling the molding material into the mold cavity. Next, the method includes obtaining a detected volumetric property of the molding material corresponding to the measured pressure and the measured temperature. Subsequently, the method comprises displaying the detected volumetric property of the molding material with the predetermined state waveform. 1. A method for operating a molding system , the molding system comprising a molding machine and a mold disposed on the molding machine , the mold having a mold cavity for being filled with a molding material from the molding machine , the method comprising:obtaining a predetermined state waveform expressing a predetermined volumetric variation of the molding material;obtaining a measured pressure and a measured temperature of the molding material in the mold cavity while performing a molding process for filling the molding material into the mold cavity;obtaining a detected volumetric property of the molding material corresponding to the measured pressure and the measured temperature; anddisplaying the detected volumetric property of the molding material with the predetermined state waveform.2. the method of claim 1 , further comprising:obtaining a plurality of measured pressures and a plurality of measured temperatures of the molding material in the mold cavity while performing the molding process to form a detected state waveform expressing a ...

MOLDING SYSTEM, MOLDING APPARATUS, INSPECTION APPARATUS, INSPECTION METHOD, AND PROGRAM

The molding system including a molding apparatus comprising, a mold clamping force sensor for detecting a mold clamping force generated in a mold, a detection unit for detecting an apparatus failure of the molding apparatus and/or molding of a defective article by the molding apparatus based on an amount of change in mold clamping force detected by the mold clamping force sensor, an operation mode prediction unit for predicting the operation mode of the molding apparatus based on an amount of change in mold clamping force detected by the mold clamping force sensor and, an actual operation mode acquisition unit for acquiring the actual operation mode of the molding apparatus without relying on the mold clamping force sensor. 110-. (canceled)11. A molding system including a molding apparatus that is provided with a mold provided so as to be openable and closable and a mold clamping mechanism to apply a mold clamping force to the mold , comprising:a mold clamping force sensor for detecting a mold clamping force generated in the mold;a detection unit for detecting an apparatus failure of the molding apparatus and/or molding of a defective article by the molding apparatus based on an amount of change in mold clamping force detected by the mold clamping force sensor;an operation mode prediction unit for predicting, based on an amount of change in mold clamping force detected by the mold clamping force sensor, which of a plurality of operation modes including a fully automatic operation mode and a semi-automatic operation mode the operation mode of the molding apparatus is; andan actual operation mode acquisition unit for acquiring, without relying on the mold clamping force sensor, in operation of the molding apparatus, which of the plurality of operation modes the actual operation mode of the molding apparatus is, whereinthe detection unit includes a determination unit for determining that the apparatus failure has occurred and/or the molding of a defective article has ...

CASTING TOOL, FOR EXAMPLE CORE SHOOTING TOOL OR PERMANENT MOULD, AND CORRESPONDING CASTING METHOD

A casting tool, for example a core shooting tool or a permanent mould, having an upper tool part and a lower tool part, which on opposite sides each have at least one engraving formed as a shell engraving and which form a mould cavity, characterized in that the shell engraving on an outer side facing away from the mould cavity comprises at least one physical sensor which is configured to measure a physical quantity with respect to a material accommodated in the mould cavity. Furthermore, a corresponding casting method is described. 1. A casting tool comprising an upper tool part and a lower tool part , which on opposite sides each have at least one engraving formed as a shell engraving and which form a mould cavity , wherein the shell engraving on an outer side facing away from the mould cavity includes at least one physical sensor which is configured to measure a physical quantity with respect to a material accommodated in the mould cavity.2. The casting tool according to claim 1 , in which the physical sensor comprises a temperature sensor thermally coupled to the shell engraving claim 1 , wherein the casting tool has at least one heating element thermally coupled to the shell engraving and a control unit which is configured to adjust a heating power of the heating element depending on a measurement signal from the temperature sensor.3. The casting tool according to claim 1 , in which the physical sensor comprises a density sensor mechanically coupled to the shell engraving for determining the density of a material shot into the mould cavity claim 1 , wherein the control unit is configured to adjust the heating power of the heating element depending on a measurement signal from the density sensor.4. The casting tool according to claim 1 , in which the shell engraving has a wall thickness at least in the area of a measuring field of the sensor between 0.5 and 15 mm claim 1 , preferably between 0.5 and 10 mm and especially preferably between 0.5 and 3 mm.5. The ...

INJECTION MOLDING SYSTEM

An injection molding system includes a measuring unit to measure a movement of a line of sight of a worker observing a molded article, a line-of-sight data storage unit to store line-of-sight information representing movements of the worker's line of sight and a measurement time, an identifying unit to identify a focus area of the molded article, a focus area storage unit to store an image of the identified focus area, a molding defect type input unit to input or select a molding defect type, and a machine learning device to machine learn the molding defect type from the image of the focus area. The machine learning device inputs a type of a molding defect that has occurred in the molded article and carries out machine learning to learn and automatically recognize a feature quantity of the molding defect from the image of the focus area. 1. An injection molding system comprising:a line-of-sight measuring unit configured to measure movements of a line of sight of a worker observing a molded article molded by injection molding;a line-of-sight data storage unit configured to store line-of-sight information representing movements of the worker's line of sight measured by the line-of-sight measuring unit and a measurement time at which the line-of-sight information was measured;a focus area identifying unit configured to, based on the line-of-sight information and the measurement time, identify a focus area of the molded article that the worker has focused on for a predetermined time or more and/or looked at a predetermined number of times or more;a focus area storage unit configured to store an image of the focus area identified by the focus area identifying unit out of images of the molded article;a molding defect type input unit configured to input or select a molding defect type; anda machine learning device configured to machine learn the molding defect type from the image of the focus area,wherein the machine learning device inputs a type of a molding defect that ...

Method for Controlling a Rate or Force of a Clamp in a Molding System Using One or More Strain Gauges

A method of monitoring and controlling a molding clamping apparatus in an injection molding or other molding process is disclosed. The method includes creating a target strain profile, receiving a deviation limit, receiving a change in strain relating to a mold while it is closing from a first strain gauge, identifying a deviation from a target strain profile based on the output from the first strain gauge, determining that the deviation exceeds the deviation limit, and adjusting the rate or force of clamp movement. The target strain profile may have a first portion relating to a clamp closing process, a second portion relating to a filling process, and a third portion relating to a clamp opening process. The first portion relating to the clamp closing process may include an intermediate portion relating to a coining process having an intermediate clamp force setpoint. 1. A non-transitory computer-readable storage medium storing processor-executable instructions that , when executed , cause one or more processors to:create, by the one or more processors, a target strain profile for a clamping and unclamping process of a molding apparatus;receive, via an interface, an upper deviation limit and a lower deviation limit for the target strain profile;receive, from a strain gauge assembly, a measured and amplified change in strain experienced by a first portion of the strain gauge assembly secured to a first mold side acted on by a second portion of the strain gauge assembly secured to a second mold side when the first mold side and the second mold side are closed;receive, as an output from a temperature sensor, temperature data taken from the first mold side on which the first strain gauge is located;identify, by the one or more processors, a deviation from the target strain profile based on the amplified change in strain provided as the output from the first portion of the strain gauge assembly and the temperature data provided as the output from the temperature sensor; ...

Ejection controller and ejection control method for injection molding machine

In an ejection controller for an injection molding machine, an image of an ejection process for a molded article is captured, a point in time when the molded article starts to drop from a mold is obtained as a drop start time point, an ejection stop time point is set based on the obtained drop start time point, and an ejection operation of an ejection device is interrupted at the set time point. Thus, the ejection is interrupted in a predetermined position, so that an operator can manually remove the molded article.

Remote Controller for Controlling Apparatus by Diverting Feedback Signal from Native Controller to the Remote Controller and Methods for Same

A remote controller can be provided on any apparatus that employs feedback control from a native controller to add functionality to the apparatus where the native controller is not capable of providing such functionality independently. 1. A method of manipulating a feedback signal for a native feedback controller of an apparatus , the apparatus further comprising a remote controller retrofit to the native controller , the method comprising:sensing a control variable of an actuation unit of the apparatus at a sensor;generating a feedback signal by the sensor based upon the control variable; receiving the feedback signal;', 'generating a control signal based upon the feedback signal;', 'combining the control signal and the feedback signal into a modified feedback signal; and', 'transmitting the modified feedback signal to the native controller in lieu of the feedback signal; and, 'at the remote controllerat the native controller, controlling operation of the actuation unit of the apparatus based at least in part upon the modified feedback signal.2. The method of wherein the apparatus comprises an injection molding apparatus comprising a heated barrel claim 1 , an injection shaft claim 1 , and an actuation unit claim 1 , the actuation unit being operably coupled with the injection shaft and configured to facilitate operation of the injection shaft with respect to the heated barrel.3. The method of claim 2 , wherein sensing a control variable of the actuation unit comprises sensing a control variable of the injection shaft.4. The method of claim 3 , wherein the control variable of the injection molding apparatus comprises one or more of an injection pressure of the heated barrel claim 3 , a temperature of the heated barrel claim 3 , and a volume of a hopper.5. The method of wherein sensing a control variable of the injection shaft comprises receiving a signal from the sensor and determining a value for the control variable based upon the signal.6. The method of wherein ...

HYDRAULIC DRIVE APPARATUS FOR A SHAPING MACHINE

A hydraulic drive apparatus includes a first hydraulic pump, a drive motor connected to the first hydraulic pump, a hydraulic line system connecting the first hydraulic pump to the consumer, and a closed-loop control unit. The closed-loop control unit has a first switching element to change a displacement volume of the first hydraulic pump between a predetermined minimum value and a maximum value. A second hydraulic pump is connected to the drive motor, and the hydraulic line system connects the second hydraulic pump to a consumer and has a first branch line connected to the first hydraulic pump, a second branch line connected to a second hydraulic pump, and a main line. The two branch lines open into the main line, and the closed-loop control unit has a second switching element for changing a displacement volume of the second hydraulic pump between a predetermined minimum value and a maximum value. 1. A hydraulic drive apparatus for a shaping machine , in particular for an injection molding machine , comprisinga first hydraulic pump,a drive motor connected to the first hydraulic pump by way of a drive shaft,at least one consumer,a hydraulic line system connecting the first hydraulic pump to the consumer, anda closed-loop control unit for closed-loop control of the hydraulic drive apparatus, wherein the closed-loop control unit has a first switching element by which a displacement volume of the first hydraulic pump can be changed over between a predetermined minimum value and a maximum value in dependence on a predetermined pressure threshold and/or a predetermined volume flow threshold, characterised in that there is provided at least one second hydraulic pump,wherein the second hydraulic pump is connected to the drive motor by way of the drive shaft,wherein the hydraulic line system connects the second hydraulic pump to the consumer and has a first branch line connected to the first hydraulic pump, a second branch line connected to a second hydraulic pump, and a ...

Method for the injection moulding of articles formed by plastic materials having different characteristics

The injection moulding of articles formed by plastic materials having different characteristics, for example of different colours, is carried out in a single injection cycle in which the first and the second plastic materials are injected into a first and into a second zone of a mould cavity by first and second injectors controlled according to specific modes so as to define a shape and/or a position of a weld line.

METHOD FOR DETERMINING A VALUE FOR THE DESCRIPTION OF THE COMPRESSION OF A MOLDABLE MATERIAL

In a method for determining at least one parameter for the description of the compression behavior of a material processed in a molding machine, at least a part of the processed material is introduced into a mold cavity via a distribution system and a gate, and the processed material solidifies in the mold cavity. A compression test is performed in which a volume storing the material is modified and a measurement of the resulting pressure modification is conducted or a pressure applied onto the material is modified and a measurement of the resulting modification of the volume is conducted. A parameter for the description of the compression behavior is calculated based on the result of the compression test by using a mathematical model. The compression test is conducted when the gate is at least substantially solidified or when the hot runner is closed. 111-. (canceled)12. A method for operating a molding machine , wherein depending on at least one parameter for the description of a compression behavior of a material processed in the molding machine , the method comprises:calculating a realistic injection volume and/or a realistic injection volume flow, and/orcalculating a decompression lift, and/orcalculating a dwell time of the melt in the molding machine, and/orparameterizing a pressure regulator, and/ordetermining a pressure dependency of the compression behavior, and/ordetermining a temperature of the melt, and/orcontrolling the velocity of the plasticizing screw so that a predetermined filling volume flow is reached, and/ordetermining a material characteristic of the melt, wherein the material characteristic is a composition, a phase state, a viscoelasticity, a solids content, a proportion of low-molecular substances, or a chemical modifications of the polymer structure.13. (canceled)14. The method according to claim 12 , wherein the molding machine is one of an injection molding machine or a transfer molding machine.15. The method according to claim 12 , ...

METHOD AND DEVICE FOR THE VARIOTHERMAL TEMPERATURE CONTROL OF INJECTION MOULDS

A method for the variothermal temperature control of an injection mould using a temperature control device, the method including at least the following steps: in a learning phase, determining a temperature control characteristic of the temperature-controllable system including at least the injection mould and the temperature control device, in order to obtain individual reference values for the system, with which the temperature control device can be controlled in order to obtain a nominal temperature profile; and in a production phase: temperature control of the injection mould with the reference values determined during the learning phase; determining deviations of an actual temperature profile of the injection mould in relation to the nominal temperature profile during the production cycle and calculating corrected reference values from these deviations; and carrying out a resulting production process using the corrected reference values. 1. A method for the variothermal temperature control of an injection mould using a temperature control device having at least the steps: 'determining a temperature control characteristic of the system which is to be temperature-controlled comprising at least the injection mould and the temperature control device, in order to obtain individual control values for the system, with which control elements of the temperature control device can be actuated in order to obtain a nominal temperature profile and', 'A) In a learning phase temperature control of the injection mould with the control values determined during the learning phase;', 'determining deviations of an actual temperature profile of the injection mould in relation to the nominal temperature profile during the production cycle and calculating corrected control values or respectively control times for the control elements from these deviations;', 'carrying out a resulting production process using the corrected control values., 'B) In a production phase2. The method ...