Настройки

Укажите год
-

Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

Подробнее
-

Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

Подробнее

Форма поиска

Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Укажите год
Укажите год
Применить Всего найдено 8996. Отображено 100.
09-08-2012 дата публикации

Method and device for generatively manufacturing a three-dimensional object with three-dimensional coded character

Номер: US20120203365A1
Автор: Florian Pfefferkorn, Ludger Hummeler, Manfred Semmler, Markus Frohnmaier, Markus Schmidtner
Принадлежит: EOS GmbH

The present invention relates to a method and to a device for generatively manufacturing a three-dimensional object ( 3 ). A powdery material ( 11 ) is applied layerwise onto a support ( 5 ) of the device or onto a previously applied layer, and the powdery material ( 11 ) is solidified by energetic radiation ( 8′ ) at locations corresponding to the object ( 3 ). The powdery material ( 11 ) is solidified such that a digital, machine readable and three-dimensional coded character is provided at a surface of the object ( 3 ).

Подробнее
Номер записи: 1
27-09-2012 дата публикации

Method for reducing differential shrinkage in sterolithography

Номер: US20120242007A1
Автор: Sam Coeck
Принадлежит: Materialise NV

The present invention relates to a new and improved stereolithography method and system for generating a three-dimensional object by forming successive, adjacent, cross-sectional laminae of that object, thereby providing an object being specially processed to reduce differential shrinkage.

Подробнее
Номер записи: 2
21-03-2013 дата публикации

Structure forming apparatus, method of manufacturing a structure, and structure

Номер: US20130071577A1
Автор: Hiroyuki Yasukochi
Принадлежит: Sony Corp

Provided is a structure forming apparatus, including: a roller provided to be rotatable, having a length in an axial direction of the rotation, and capable of transmitting an energy beam; a retaining member arranged to face the roller such that a slit region having a length in the axial direction is formed between the retaining member and the roller, and capable of retaining a material to be cured by energy of the energy beam at least in the slit region; an irradiation unit configured to selectively radiate the energy beam to the slit region through the roller to cure the material so that a sheet-like structure is formed; and a take-up reel configured to take up the sheet-like structure thus formed.

Подробнее
Номер записи: 3
28-03-2013 дата публикации

Layer Transfusion with Rotatable Belt for Additive Manufacturing

Номер: US20130075013A1
Автор: J. Randolph Sanders, James W. Comb, Michael W. Bacus, Steven A. Chillscyzn, William J. Hanson
Принадлежит: Stratasys Inc

An additive manufacturing system comprising a transfer medium configured to receive the layers from a imaging engine, a heater configured to heat the layers on the transfer medium, and a layer transfusion assembly that includes a build platform, and is configured to transfuse the heated layers onto the build platform in a layer-by-layer manner to print a three-dimensional part.

Подробнее
Номер записи: 4
12-09-2013 дата публикации

Polymer pelletization via melt fracture

Номер: US20130234357A1
Автор: Tim Andreas Osswald, William Maurcio Aquite
Принадлежит: WISCONSIN ALUMNI RESEARCH FOUNDATION

Polymer pellets are formed using air to influence the separation of polymer from a polymer melt. In accordance with one or more embodiments, a polymer material is extruded through a nozzle to form a polymer melt extending from the nozzle. A non-uniform thickness is generated in the polymer melt using a gas or gasses to apply a drag force to the polymer melt. This drag force reduces a thickness of a portion of the polymer melt adjacent the nozzle, and the polymer melt is fractured into discrete droplets at the reduced thickness. The discrete droplets are then solidified to form pellets.

Подробнее
Номер записи: 5
26-09-2013 дата публикации

Method for producing a three-dimensional object and stereolithography machine employing said method

Номер: US20130249146A1
Автор: Roberto FORTUNATO, Sergio Zenere
Принадлежит: DWS SRL

Method for producing a three-dimensional object in layers by way of a stereolithography machine ( 1 ) including a container ( 2 ) suited to contain a liquid substance ( 3 ), structure ( 5 ) suited to emit predefined radiation ( 4 ) suited to selectively solidify a layer ( 6 ) of the liquid substance ( 3 ) adjacent to the bottom ( 2 a ) of the container ( 2 ), and an actuator ( 8 ) suited to move the solidified layer ( 6 a ) with respect to the bottom ( 2 a ). The method includes selectively solidifying the liquid layer ( 6 ); separating the solidified layer ( 6 a ) from the bottom ( 2 a ) through a movement ( 11 ) suited to move them away from each other, including a plurality of shifts ( 12, 12 a, 12 b, 12 c ) for corresponding predefined lengths, spaced by corresponding intermediate stops ( 14, 14 a, 14 b ) for corresponding predefined time intervals ( 15, 15 a, 15 b ). The intermediate stops are carried out before the solidified layer has become completely detached from the bottom.

Подробнее
Номер записи: 6
28-11-2013 дата публикации

Localized repair of superalloy component

Номер: US20130316183A1
Автор: Ahmed Kamel, Anand A. Kulkarni, JR., Stefan Lampenscherf
Принадлежит: SIEMENS AG, Siemens Energy Inc

A method for repairing a damaged portion ( 144 ) of a brazed-on gas turbine engine seal ( 142 ) without the need to remove and to replace the entire seal. The damaged portion is removed to reveal a repair surface ( 146 ) of the underlying superalloy material, and a new seal structure ( 148 ) is formed by an additive manufacturing processes using a laser beam ( 124 ) to melt a powder ( 116 ) including superalloy material ( 116 ′) and flux material ( 116 ″). The flux material forms a protective layer of slag ( 132 ) over the melted superalloy material, thereby permitting the new seal structure to be formed directly onto the underlying superalloy material without the need for an intervening braze layer.

Подробнее
Номер записи: 7
06-02-2014 дата публикации

Construction of electric machines

Номер: US20140035423A1
Автор: Sameh Dardona, Tahany Ibrahim El-Wardany, Wayde R. Schmidt, William A. Veronesi
Принадлежит: Hamilton Sundstrand Corp

An improvement in apparatus and methods of making electrical machines, utilizing a combination of additive manufacturing techniques to create, in particular, small, high efficiency stators, but also useful for making complex rotor structures.

Подробнее
Номер записи: 8
27-03-2014 дата публикации

Solid Imaging Systems, Components Thereof, and Methods of Solid Imaging

Номер: US20140084517A1
Автор: Charles R. Sperry, Dennis F. McNamara, II Richard Ora Gregory, Martin Alan Johnson
Принадлежит: 3D Systems Inc

There is provided solid imaging methods and apparatus for making three-dimensional objects from solid imaging material. A tray with a film bottom is provided to hold solid imaging material that is selectively cured into cross-sections of the three-dimensional object being built. A coater bar is moved back and forth over the film to remove any uncured solid imaging material from a previous layer and to apply a new layer of solid imaging material. A sensor is provided to measure the amount of resin in the tray to determine the appropriate amount of solid imaging material to be added, from a cartridge, for the next layer. A shuttle, which covers the tray when the exterior door to the solid imaging apparatus is opened for setting up a build or removing a three-dimensional object, can also be used to move the coater bar and to selectively open one or more valves on the cartridge to dispense the desired amount of solid imaging material.

Подробнее
Номер записи: 9
04-01-2018 дата публикации

SYSTEMS AND METHODS FOR MANUFACTURING CUSTOM SURGICAL INSTRUMENTS

Номер: US20180000468A1
Автор: "ONeil Michael J.", Lomeli Roman, Sommerich Robert
Принадлежит: DePuy Synthes Products, Inc.

Systems and methods are disclosed in which customized instruments, e.g., surgical instruments, can be manufactured to provide improved ergonomics, comfort, and accuracy. Instruments can be customized based on various parameters, including a quantitative assessment of the user, desired or intended use of the instrument, user preferences, and so forth. Exemplary instrument properties which can be customized include size, geometry, durometer, mechanical assist, texture, color, markings, modulus of elasticity, sensor inclusion, sensor type, sensor feedback type, balance, finish, and weight. 1. A method for manufacturing a custom surgical instrument , comprising:receiving a data set representing one or more parameters of a user;generating, with a computer system, a custom instrument handle design based on the data set; andcontrolling a manufacturing system based on the generated instrument handle design to produce a custom surgical instrument handle.2. The method of claim 1 , further comprising generating the data set by capturing an image of the user using an imaging device and extracting anthropometric data from the captured image.3. The method of claim 2 , wherein the anthropometric data is anthropometric data of a hand of the user.4. The method of claim 2 , wherein the anthropometric data is derived from distances between anatomical landmarks of the user identified in the captured image.5. The method of claim 2 , wherein the anthropometric data comprises at least one of hand length claim 2 , mid finger length claim 2 , palm length claim 2 , palm width claim 2 , grip diameter claim 2 , and mid finger span.6. The method of claim 1 , wherein the data set includes force measurements of the user.7. The method of claim 6 , wherein the force measurements are indicative of at least one of the user's grip strength claim 6 , torque capability claim 6 , grip shape claim 6 , grip location claim 6 , and pressure point locations.8. The method of claim 6 , further comprising ...

Подробнее
Номер записи: 10
06-01-2022 дата публикации

WIRE ARC ADDITIVE MANUFACTURING METHOD FOR HIGH-STRENGTH ALUMINUM ALLOY COMPONENT, EQUIPMENT AND PRODUCT

Номер: US20220001476A1
Автор: Liu Sheng, Zhang Chen, ZHANG DONGBIN, ZHU Junkai
Принадлежит:

The disclosure relates to the field of wire arc additive manufacturing, and specifically discloses a wire arc additive manufacturing method for a high-strength aluminum alloy component, equipment and a product. A high-strength aluminum alloy is modified by using a MXene nanomaterial, and wire arc additive manufacturing is performed by using the modified high-strength aluminum alloy as a raw material, and a nanosecond laser beam is applied during the wire arc additive manufacturing to achieve an enhanced arc cathode atomization cleanup function to remove impurities, thus obtaining a high-strength aluminum alloy component without defects. The disclosure can solve the problem of very difficult forming in wire arc additive manufacturing of a high-strength aluminum alloy, and also solve the problems of many pores, liability to crack and lots of impurities during additive manufacturing of the high-strength aluminum alloy, so that a high-strength aluminum alloy component without defects can be produced. 1. A wire arc additive manufacturing method for a high-strength aluminum alloy component , comprising:modifying a high-strength aluminum alloy by using a MXene nanomaterial;using the modified high-strength aluminum alloy as raw material for wire arc additive manufacturing;applying a nanosecond laser beam when manufacturing to achieve an enhanced arc cathode atomization cleanup function to remove impurities, andobtaining a high-strength aluminum alloy component without defects.2. The wire arc additive manufacturing method for a high-strength aluminum alloy component according to claim 1 , further comprising:S1: mixing the high-strength aluminum alloy with the MXene nanomaterial to obtain a MXene-modified high-strength aluminum alloy filler wire;S2: conveying the MXene-modified high-strength aluminum alloy filler wire to a specified position and performing arc starting to form a molten pool, and at the same time providing a nanosecond pulse laser beam for scanning movement to ...

Подробнее
Номер записи: 11
06-01-2022 дата публикации

Methods for Forming Three-Dimensional Polymeric Articles

Номер: US20220001597A1
Автор: Sodano Henry A., Tu Ruowen
Принадлежит:

The disclosure relates to methods of forming three-dimensional (3D) polymeric articles and additive manufacturing apparatuses for the same. The methods include providing a polymeric solution comprising a polymer dissolved in a solvent; providing a non-solvent, wherein the solvent is miscible in the non-solvent, and the polymer is insoluble in the non-solvent; and injecting the polymeric solution into the non-solvent in a pre-determined 3D pattern to provide a 3D polymeric article. 1. A method of forming a three-dimensional (3D) polymeric article , the method comprising:providing a polymeric solution comprising a polymer dissolved in a solvent;providing a non-solvent, wherein the solvent is miscible in the non-solvent, and the polymer is insoluble in the non-solvent; andinjecting the polymeric solution into the non-solvent at a temperature of 15° C. or less or at least 30° C. in a pre-determined 3D pattern, thereby precipitating the polymer from the polymeric solution in the non-solvent as a solid polymeric material to provide the 3D polymeric article.2. A method of forming a three-dimensional (3D) polymeric article , the method comprising:providing a polymeric solution comprising a polymer dissolved in a solvent;providing a non-solvent and a salt dissolved in the non-solvent, wherein the solvent is miscible in the non-solvent, and the polymer is insoluble in the non-solvent; andinjecting the polymeric solution into the non-solvent in a pre-determined 3D pattern, thereby precipitating the polymer from the polymeric solution in the non-solvent as a solid polymeric material to provide the 3D polymeric article.3. A method of forming a three-dimensional (3D) polymeric article , the method comprising:providing a polymeric solution comprising a thermosetting resin dissolved in a solvent and a crosslinking catalyst or initiator dissolved in the solvent;providing a non-solvent, wherein the solvent is miscible in the non-solvent, and the thermosetting resin is insoluble in ...

Подробнее
Номер записи: 12
06-01-2022 дата публикации

3-D PRINTER

Номер: US20220001612A1
Автор: Abdul Jabbar Mohammed Hussain, CAO Jinwei, Dale Nilesh, Gumeci Cenk, Patil Sandeep, ZHAO Nanzhu
Принадлежит:

A method of operating a 3-D printer apparatus includes a tank structure with a bottom wall with a printing area defined above and spaced apart from the bottom wall. A gas permeable liquid within the tank overlays the bottom wall of the tank structure defining a first mobile layer below the printing area. An inhibition liquid within the tank overlays the gas permeable liquid defining a second mobile layer below the printing area. A polymerizable resin overlays the inhibition liquid and flows into the printing area. Positioning of an object carrier controlled such that a lower surface of the object carrier is initially located within the polymerizable resin and within the printing area. Operation of a resin curing device beneath the bottom wall provides light to the printing area polymerizing predetermined portions of the polymerizable resin forming an object attached to the lower surface of the object carrier. 1. A 3-D printer apparatus , comprisinga tank structure having bottom wall and a printing area located above and spaced apart from the bottom wall;a gas permeable liquid within the tank above and along the bottom wall of the tank structure defining a first mobile layer below the printing area;an inhibition liquid within the tank above the gas permeable liquid defining a second mobile layer below the printing area;a polymerizable resin above the inhibition liquid and located within the printing area;an object carrier initially located within the tank during a printing process;a carrier movement device attached to the object carrier;a resin curing device configured to provide light to the printing area; andan electronic controller controlling the printing process and being in electronic communication with the carrier movement device and the resin curing device, the electronic controller being configured to control positioning and movement of the object carrier via operation of the carrier movement device and controlling operation of the resin curing device.2. The ...

Подробнее
Номер записи: 13
05-01-2017 дата публикации

METHOD FOR MANUFACTURING A METAL PART WITH BI-METALLIC CHARACTERISTIC AND MANUFACTURING ARRANGEMENT FOR CONDUCTING SAID METHOD

Номер: US20170001263A1
Автор: STEINER Harald
Принадлежит: ANSALDO ENERGIA IP UK LIMITED

A new method for manufacturing a metal part with bi-metallic characteristic in an additive manufacturing process includes providing a first powder of a metal with a first thermal expansion coefficient; providing a second powder of a metal with a second thermal expansion coefficient different from the first thermal expansion coefficient; manufacturing a first pure metal layer by successively melting layers of the first powder alone; manufacturing on the first pure metal layer a mixed layer by successively melting layers of a third powder being a mixture of the first and second powders, whereby the percentage of the first powder decreases from 100% to 0% with increasing thickness of the mixed layer, and whereby the percentage of the second powder increases at the same time from 0% to 100%; and manufacturing a second pure metal layer by successively melting layers of the second powder alone. 1. Method for manufacturing a metal part with bi-metallic characteristic in an additive manufacturing process , comprising:a) providing a first powder of a metal with a first thermal expansion coefficient;b) providing a second powder of a metal with a second thermal expansion coefficient different from said first thermal expansion coefficient;c) manufacturing a first pure metal layer by successively melting layers of said first powder alone;d) manufacturing on said first pure metal layer a mixed layer by successively melting layers of a third powder being a mixture of said first and second powders, whereby the percentage of said first powder decreases from 100% to 0% with increasing thickness of said mixed layer, and whereby the percentage of said second powder increases at the same time from 0% to 100%; ande) manufacturing a second pure metal layer by successively melting layers of said second powder alone.2. Method as claimed in claim 1 , wherein the mixture of the first and second powders is produced by taking a first quantity of the first powder from a first powder reservoir ...

Подробнее
Номер записи: 14
02-01-2020 дата публикации

DEVICE FOR DETERMINING AT LEAST ONE STREAMING PARAMETER OF A FLUID STREAM

Номер: US20200001361A1
Автор: ENGEL Viktor, SITTIG Dominic
Принадлежит: CONCEPT LASER GMBH

Device () for determining at least one streaming parameter of a fluid stream () streaming through a process chamber volume () of a process chamber () of an additive manufacturing apparatus (), the device () comprising: a housing () detachably connectable or connected with at least one housing structure element () of a housing structure () of an additive manufacturing apparatus (); at least one, particularly probe-like, streaming parameter determination element () disposed at or in the housing (), the at least one streaming parameter determination element () being insertable or inserted into a process chamber volume () of a process chamber () of an additive manufacturing apparatus () when the housing () is connected with at least one housing structure element () of a housing structure () of an additive manufacturing apparatus (). 1123451. Device () for determining at least one streaming parameter of a fluid stream () streaming through a process chamber volume () of a process chamber () of an additive manufacturing apparatus () , the device () comprising:{'b': 8', '7', '6', '5, 'a housing () detachably connectable or connected with at least one housing structure element () of a housing structure () of an additive manufacturing apparatus ();'}{'b': 9', '8', '9', '3', '4', '5', '8', '7', '6', '5, 'at least one, particularly probe-like, streaming parameter determination element () disposed at or in the housing (), the at least one streaming parameter determination element () being insertable or inserted into a process chamber volume () of a process chamber () of an additive manufacturing apparatus () when the housing () is connected with at least one housing structure element () of a housing structure () of an additive manufacturing apparatus ().'}2923458765. Device according to claim 1 , wherein the at least one streaming parameter determination element () is connectable or connected with at least one streaming parameter determination unit being configured to determine ...

Подробнее
Номер записи: 15
02-01-2020 дата публикации

METHOD FOR TREATING RAW-MATERIAL POWDER, APPARATUS FOR TREATING RAW-MATERIAL POWDER, AND METHOD FOR PRODUCING OBJECT

Номер: US20200001399A1
Автор: Kamachi Koh, Kitani Koji
Принадлежит:

A method for treating a raw-material powder includes forming a layer of the raw-material powder and removing oxide film formed on a surface of the raw-material powder from which the layer has been formed. 1. An apparatus for treating a raw-material powder in an object production system that uses powder bed fusion , the apparatus comprising:an evacuable enclosure;atmosphere generator configured to generate, in the enclosure, an atmosphere containing hydrogen and/or an inert element;a powder container located in the enclosure and electrically insulated from the enclosure;a forming unit configured to form a layer of the raw-material powder in the powder container; andan energizing unit configured to generate plasma in said atmosphere by applying an AC voltage to the layer formed by the forming unit, wherein the energizing unit has an electrode arranged to come into contact with the layer and apply the AC voltage to the layer in the powder container.2. The apparatus according to for treating a raw-material powder claim 1 , wherein a surface of the powder container that comes into contact with the layer is insulating.3. The apparatus according to for treating a raw-material powder claim 1 , wherein the energizing unit capable of superposing the AC voltage with a negative DC voltage.4. The apparatus according to for treating a raw-material powder claim 1 , wherein the apparatus further comprising a heater claim 1 , as a component of the powder container claim 1 , arranged to heat the layer.5. An object production system that uses powder bed fusion claim 1 , the object production system comprising:an apparatus for treating a raw-material powder; an evacuable enclosure;', 'atmosphere generator configured to generate, in the enclosure, an atmosphere containing hydrogen and/or an inert element;', 'a powder container located in the enclosure and electrically insulated from the enclosure;', 'a forming unit configured to form a layer of the raw-material powder in the powder ...

Подробнее
Номер записи: 16
05-01-2017 дата публикации

ADDITIVE-MANUFACTURING DEVICE FOR CREATING A THREE-DIMENSIONAL OBJECT, AND ASSOCIATED METHOD

Номер: US20170001370A1
Автор: Hauser David, Lerouge Tom, Michel Cédric, Roux Victor
Принадлежит: Pollen AM

The main object of the invention is an additive-manufacturing device () for creating a three-dimensional object (), characterized in that it comprises a material selection unit (), the materials including materials for the creation of the three-dimensional object (), an induction heating unit () for heating the materials, the selection unit () being able to convey the materials toward the heating unit () which causes them to melt, and a material deposition unit () which ejects the materials after they have passed through the heating unit () onto a support () so as to allow the three-dimensional object () to be built up in successive layers of material. 112. A device () of additive manufacture for producing a three-dimensional object () , characterized in that it comprises:{'b': 3', '2, 'a selection unit () of materials, including materials for producing the three-dimensional object (),'}{'b': 4', '3', '4, 'an induction heating unit () of the materials, the selection unit () being able to convey the materials down to the heating unit () which causes them to melt,'}{'b': 5', '4', '6', '2', '5', '17, 'a deposition unit () of materials, which ejects the materials after they passed through the heating unit () on a support () to allow the production of the three-dimensional object () in successive material layers, the said deposition unit () of the materials comprising at least one acoustic waves generation deposition module ().'}23333334aaaab. Device according to claim 1 , characterized in that the selection unit () of material comprises a first portion () of material packaging in capsules ( claim 1 , claim 1 , ) and a second portion () of material dispensing claim 1 , particularly to the induction heating unit ().333236362bbbb. Device according to claim 2 , characterized in that the second portion () of material dispensing comprises a first dispenser () of materials for production of the three-dimensional object () claim 2 , and/or a second dispenser () of materials for ...

Подробнее
Номер записи: 17
05-01-2017 дата публикации

DEVICE AND METHODS FOR GENERATIVE MANUFACTURING

Номер: US20170001372A1
Автор: SCHROEDER Thorsten
Принадлежит:

A device for generative manufacturing of a component, in particular for layered generative manufacturing of a component which is printed on a base plate. The base plate forms a connecting surface for applying and compacting powder in order to manufacture the component, and includes a plurality of sheets, the sheets being formed and arranged next to one other such that the connecting surface of the base plate is formed by lateral surfaces of the sheets. 1. A device for generative manufacture of parts , the device comprising:a base plate which forms a connecting surface for applying and compacting powder in order to manufacture the component, the base plate comprising a plurality of sheets,the sheets being formed and arranged next to one another such that the connecting surface of the base plate is formed by lateral surfaces of the sheets.2. The device of claim 1 , wherein the device is configured to generate a defined tension force between the sheets claim 1 , the tension force allowing individual sheets to yield while the powder is applied to and compacted on the connecting surface.3. The device of claim 2 , wherein the device has a screw connection which is configured to generate the defined tension force.4. The device of claim 1 , wherein the device comprises a hold-down configured to prevent individual sheets from yielding while the powder is applied to and compacted on the connecting surface.5. A method for generative manufacture of a component claim 1 , the method comprising:providing a device for generative manufacture of parts, the device comprising a base plate which forms a connecting surface for applying and compacting powder in order to manufacture the component, wherein the base plate comprises a plurality of sheets, wherein the sheets are formed and arranged next to one another such that the connecting surface of the base plate is formed by lateral surfaces of the sheets;producing the component by successively applying and compacting powder in thin ...

Подробнее
Номер записи: 18
04-01-2018 дата публикации

PRINTING A MULTI-STRUCTURED 3D OBJECT

Номер: US20180001550A1
Автор: Ng Hou T., Zhao Lihua, Zhao Yan
Принадлежит:

In an example implementation, a method of printing a multi-structured three-dimensional (3D) object includes forming a layer of sinterable material. The method includes processing a first portion of the sinterable material using first set of processing parameters and processing a second portion of the sinterable material using a second set of processing parameters. The processed first and second portions form, respectively, parts of a first and second structure of a multi-structured 3D object. 1. A method of printing a multi-structured three-dimensional (3D) object comprising:forming a layer of sinterable material;processing a first portion of the sinterable material using a first set of processing parameters;processing a second portion of the sinterable material using a second set of processing parameters;wherein the processed first and second portions form, respectively, parts of a first and second structure of a multi-structured 3D object.2. A method as in claim 1 , wherein the layer of sinterable material comprises a first layer of sinterable material claim 1 , the method further comprising:forming a second layer of sinterable material; andprocessing the second layer using the second set of processing parameters, wherein the processed second layer forms part of the second structure.3. A method as in claim 2 , further comprising:forming a third layer of sinterable material; andprocessing the third layer using the first set of processing parameters, wherein the processed third layer forms part of the first structure.4. A method as in claim 1 , wherein:using a first set of processing parameters comprises applying to the first portion of sinterable material, a fusing agent having a first ink density; andusing a second set of processing parameters comprises applying to the second portion of sinterable material, a fusing agent having a second ink density.5. A method as in claim 1 , wherein the second structure comprises a core structure and the first structure ...

Подробнее
Номер записи: 19
04-01-2018 дата публикации

Recoating Unit, Recoating Method, Device and Method for Additive Manufacturing of a Three-Dimensional Object

Номер: US20180001559A1
Автор: Grünberger Stefan, Paternoster Stefan
Принадлежит: EOS GMBH ELECTRO OPTICAL SYSTEMS

A recoating unit () serves for equipping or retrofitting a device () for additive manufacturing of a three-dimensional object () by selectively solidifying a building material (), preferably a powder, layer by layer. The device () comprises a recoater () movable across a build area () for applying a layer () of the building material () within the build area () and a solidification device () for selectively solidifying the applied layer () at positions corresponding to a cross-section of the object () to be manufactured. The device () is formed and/or controlled to repeat the steps of applying and selectively solidifying until the object () is completed. The recoating unit () comprises at least two recoating rollers () spaced apart from each other in a first direction (B) and extending into a second direction transversely, preferably perpendicularly, to the first direction, and a compacting and/or smoothing element () arranged between the two recoating rollers () in the first direction (B) and extending into the second direction. The recoating unit () is adapted to draw-out building material to a regular layer (), depending on the movement of the recoating unit into the first direction (B) or into its reverse direction (B), using the recoating roller () arranged ahead in the respective moving direction (B B), and to compact or smoothen the layer () drawn-out by the recoating roller () arranged ahead using the compacting and/or smoothing element (). 1. Recoating unit for equipping or retrofitting a device for additive manufacturing of a three-dimensional object by selectively solidifying a building material , layer by layer , wherein the device comprises a recoater movable across a build area for applying a layer of the building material within the build area and a solidification device for selectively solidifying the applied layer at positions corresponding to a cross-section of the object to be manufactured , and is formed and/or controlled to repeat the steps of ...

Подробнее
Номер записи: 20
04-01-2018 дата публикации

Three-dimensional printing of investment casting patterns

Номер: US20180001561A1
Автор: Michael G. HASCHER, William Buckley
Принадлежит: Individual

A system and method for generating investment casting patterns by 3D printing. CAD software is used to generate a hollow 3D model of a solid 3D model of a desired pattern. The pattern is generated by a 3D printer which prints the exterior of the pattern in pattern wax and the interior in support wax.

Подробнее
Номер записи: 21
03-01-2019 дата публикации

Metal Three-Dimensional Printer And Printing Method Thereof, And Three-Dimensional Printing Material

Номер: US20190001410A1
Автор: He Yonggang, HO Leungmui, SO Kinkeung
Принадлежит:

A metal three-dimensional printer, a printing method, and a three-dimensional printing material. The three-dimensional printer includes a printing head, a heating apparatus, a printing platform, and a sintering shaping chamber. The printing method includes a preliminary shaping step and a sintering step. The heating apparatus heats the three-dimensional printing material. A heating temperature of the heating apparatus is 50° C. to 300° C., and a binder bonds metal powder at 50° C. to 300° C., and the three-dimensional printing material is extruded onto the printing platform to form a preliminary cured object. In the sintering step, the preliminary cured object is sintered and cured into a shaped object. 1. A printing method of a metal three-dimensional printer , the three-dimensional printer comprising:a printing head, the printing head containing a three-dimensional printing material,wherein:the three-dimensional printing material comprises metal powder and a binder, the three-dimensional printing material is processed and shaped into a strip-shaped printing material after the metal powder and the binder are mixed, and a weight percentage of the metal powder in the three-dimensional printing material is more than 60%;the printing head comprises a guide tube, a throat tube, and a printing nozzle that are sequentially communicated; a peripheral outer wall of the throat tube is provided with a heating apparatus, and the strip-shaped printing material passes through the guide tube and the throat tube; andthe printing method comprises the following steps:a preliminary shaping step: heating the three-dimensional printing material by using the heating apparatus, wherein a heating temperature of the heating apparatus is between 50° C. and 300° C., and the binder bonds the metal powder at 50° C. to 300° C., and extruding the three-dimensional printing material onto a printing platform to form a preliminary cured object; anda sintering step: sintering and curing the ...

Подробнее
Номер записи: 22
03-01-2019 дата публикации

METHOD FOR MANUFACTURING THREE-DIMENSIONALLY SHAPED OBJECT

Номер: US20190001415A1
Автор: Abe Satoshi, MORIMOTO Masanori
Принадлежит: Panasonic Intellectual Property Management Co., Ltd.

A method for manufacturing a three-dimensional shaped object comprising an undercut portion by alternate repetition of a powder-layer forming and a solidified-layer forming, the repetition comprising: (i) forming a solidified layer by irradiating a predetermined portion of a powder layer with a light beam, thereby allowing a sintering of the powder in the predetermined portion or a melting and subsequent solidification of the powder; and (ii) forming another solidified layer by newly forming a powder layer on the formed solidified layer, followed by an irradiation of a predetermined portion of the newly formed powder layer with the light beam. Especially, in the manufacturing method according to an embodiment of the present invention, a modeling process for pre-identifying the undercut portion is performed prior to a performance of the method. 1. A method for manufacturing a three-dimensional shaped object comprising an undercut portion by alternate repetition of a powder-layer forming and a solidified-layer forming , the repetition comprising:(i) forming a solidified layer by irradiating a predetermined portion of a powder layer with a light beam, thereby allowing a sintering of the powder in the predetermined portion or a melting and subsequent solidification of the powder; and(ii) forming another solidified layer by newly forming a powder layer on the formed solidified layer, followed by an irradiation of a predetermined portion of the newly formed powder layer with the light beam,wherein a modeling process for pre-identifying the undercut portion is performed prior to a performance of the method.2. The method according to claim 1 , wherein a surface of a model of the three-dimensional shaped object to be manufactured is divided into a plurality of pieces in the modeling process claim 1 , and an extraction for a surface of the undercut portion is performed from the surface of the model of the three-dimensional shaped object claim 1 , based on a direction of a ...

Подробнее
Номер записи: 23
02-01-2020 дата публикации

APPARATUS FOR ADDITIVELY MANUFACTURING THREE-DIMENSIONAL OBJECTS

Номер: US20200001532A1
Автор: Werner Jürgen
Принадлежит: CONCEPT LASER GMBH

Apparatus () for additively manufacturing three-dimensional objects () by means of successive layerwise selective irradiation and consolidation of layers of a build material () which can be consolidated by means of an energy beam (), which apparatus () comprises an irradiation device () adapted to generate the energy beam (), wherein the irradiation device () comprises a beam guiding unit () that is adapted to guide the energy beam () in a build plane () in which build material () is applied, wherein the irradiation device () is adapted to generate at least one segmented track () comprising at least two first track segments () in which build material () is to be irradiated with the energy beam (). 112491696895461112498101718171795129518. Apparatus () for additively manufacturing three-dimensional objects () by means of successive layerwise selective irradiation and consolidation of layers of a build material () which can be consolidated by means of an energy beam () , which apparatus () comprises an irradiation device () adapted to generate the energy beam () , wherein the irradiation device () comprises a beam guiding unit () that is adapted to guide the energy beam () in a build plane () in which build material () is applied , characterized in that the irradiation device () is adapted to generate at least one segmented track () comprising at least two first track segments () in which build material () is to be irradiated with the energy beam () , wherein the beam guiding unit () is adapted to move at least one beam guiding element () in a continuous motion , comprising at least two first motion parts () and at least one second motion part () between the at least two first motion parts () , wherein during at least one , in particular each , first motion part () the energy beam () is guided onto the build plane () and one first track segment () is generated , wherein the energy beam () is not guided onto the build plane () during the at least one second motion part ...

Подробнее
Номер записи: 24
03-01-2019 дата публикации

3D PRINTER AND PRINTING SYSTEM

Номер: US20190001552A1
Автор: JU Hwan Ook, Lee Hong Joo, Park Seong Jin
Принадлежит:

The present invention relates to a 3D printer and a printing system. The present invention may include: a storage unit formed in a hexahedral shape and having an open top and a bottom surface formed of a film layer comprising an upper film layer, the storage unit storing a photocurable material therein; a light source unit comprising at least one light emitting diode, the light source unit being disposed below the storage unit and radiating light toward the photocurable material; and a switching unit comprising an LCD panel disposed between the light source unit and the storage unit, the switching unit opening and closing each pixel included in the LCD panel to selectively pass light emitted from the light source unit toward the photocurable material. Accordingly, light emitted from below the storage unit can be emitted toward the photocurable material without being distorted. 1. A three-dimensional (3D) printer comprising:a storage unit having atop surface formed in an open hexahedral shape and a bottom surface formed of a film layer comprising an upper film layer, for storing a photocurable material therein;a light source unit comprising at least one light emitting diode, the light source unit being disposed below the storage unit and radiating light toward the photocurable material; anda switching unit comprising an LCD panel disposed between the light source unit and the storage unit, the switching unit opening and closing each pixel included in the LCD panel to selectively pass light emitted from the light source unit toward the photocurable material.2. The 3D printer according to claim 1 ,wherein the film layer further comprises lower film layer disposed under the upper film layer to closely contact an upper surface of the switching unit, the upper film layer directly contacts the photocurable material.3. The 3D printer according to claim 1 ,wherein the upper film layer has higher malleability and ductility than the lower film layer.4. The 3D printer according ...

Подробнее
Номер записи: 25
03-01-2019 дата публикации

COOLING OF PRINT DEVICE AND HEATING OF PRINT MATERIAL

Номер: US20190001559A1
Автор: Liarte Noel, SORIANO FOSAS David, ZAMORANO Juan Manuel
Принадлежит: Hewlett-Packard Development Company, L.P.

In an example, a print device comprises: a heat pump () to extract heat from a fluid source to produce cooled fluid and to transfer the heat from the fluid source to heat a print material (), wherein the cooled fluid is used to cool a component () of the print device. 1. A print device comprising:a heat pump to extract heat from a fluid source to produce cooled fluid and to transfer the heat from the fluid source to heat a print material, wherein the cooled fluid is used to cool a component of the print device.2. A print device according to claim 1 , wherein the heat pump comprises a source heat exchanger and a sink heat exchanger claim 1 , wherein the source heat exchanger is in thermal contact with the fluid source and wherein the sink heat exchanger is in thermal contact with the print material.3. A print device according to claim 2 , wherein the print device is an additive manufacturing apparatus and wherein the print material is a build material and the component cooled by the coded fluid is an energy source to fuse the build material.4. A print device according to claim 3 , further comprising a print bed to receive the build material in a layer-wise manner and a feeder to supply the build material from a container to the print bed.5. A print device according to claim 4 , wherein the sink heat exchanger is in thermal contact with the feeder to heat the build material as it is conveyed to the print bed.6. A print device according to claim 2 , further comprising an intake duct and a fan to draw the fluid through the intake duct past the source heat exchanger.7. A print device according to claim 6 , wherein the component cooled by the cooled fluid is housed within a container and the intake duct is fluidically coupled to the container to supply the coded fluid into the container.8. A print device according to claim 7 , wherein the container comprises an exhaust port.9. A print device according to claim 8 , wherein the exhaust port is connected to the intake duct ...

Подробнее
Номер записи: 26
03-01-2019 дата публикации

ADDITIVE MANUFACTURING MACHINE COMPRISING A POWDER DISTRIBUTION SYSTEM HAVING A TRAY AND AN INJECTOR

Номер: US20190001560A1
Автор: WALRAND GILLES
Принадлежит:

A machine is provided for the additive manufacture of a part by complete or partial selective melting of a powder, the machine including: a horizontal working plane; at least one spreading device; at least one system for dispensing powder over the working plane comprising at least one slide for receiving powder and at least one powder injector, the receiving slide being movable in translation, with respect to the working plane, and the injector being positioned above the receiving slide, so as to dispense powder over the receiving slide which is moving between a retracted position and a deployed position. 1. A machine for the additive manufacture of a part by complete or partial selective melting of a powder , the machine comprising:a horizontal working plane configured to receive a powder layer;at least one spreading device for spreading the said powder layer over the working plane, which device is movable with respect to the working plane along a trajectory over the working plane, the trajectory comprising at least one component parallel to a longitudinal horizontal direction;at least one deposition system for deposition of powder on the working plane, the deposition system comprising (a) at least one slide for receiving powder and (b) at least one powder injector,wherein the receiving slide is movable in translation, with respect to the working plane, along at least one transverse horizontal direction, between (a) a retracted position in which the receiving slide extends outside the trajectory of the spreading device over the working plane and (b) a deployed position in which the receiving slide extends at least in part into the trajectory of the spreading device over the working plane, andwherein the injector is positioned above the receiving slide, so as to dispense powder over the receiving slide which is moving between the retracted position and the deployed position.2. A machine according to claim 1 , wherein the deposition system is removable with respect ...

Подробнее
Номер записи: 27
03-01-2019 дата публикации

METHODS AND APPARATUS FOR MANUFACTURING A COMPONENT

Номер: US20190001572A1
Автор: SAVINGS David, TREPLETON Ross
Принадлежит:

A method of manufacturing a component comprising contacting a powder with a tooling comprising a main body and a removable element, applying a manufacturing process to the powder to form the powder into a component, removing the removable element from the tooling to form a recess, and inserting a separation tool into the recess to thereby apply a force to separate the component from the main body of the tooling. A tooling for forming a component from a powder, the tooling comprising a main body and a removable element which is removable from the main body to form a recess for the insertion of a separation tool to apply a force to separate the component from the main body of the tooling. 1. A method of manufacturing a component comprising:contacting a powder with a tooling comprising a main body and a removable element;applying a manufacturing process to the powder to form the powder into a component;removing the removable element from the tooling to form a recess; andinserting a separation tool into the recess to thereby apply a force to separate the component from the main body of the tooling.2. A method of manufacturing a component as claimed in claim 1 , wherein the removal of the removable element forms a recess which is in communication with a surface of the component claim 1 , and wherein the separation tool is inserted into the recess to contact the surface of the component and apply the force to separate the component from the main body of the tooling.3. A method of manufacturing a component as claimed in claim 1 , wherein the main body of the tooling is in contact with a surface of the component claim 1 , the tooling further comprising a buffer element separable from the main body and in contact with the surface of the component claim 1 , wherein removal of the removable element forms a recess which is in communication with the buffer element of the component claim 1 , and wherein the separation tool is inserted into the recess to contact the buffer element ...

Подробнее
Номер записи: 28
02-01-2020 дата публикации

METHODS FOR PRINTING CONDUCTIVE OBJECTS

Номер: US20200001637A1
Автор: Abraham Biby Esther, Chretien Michelle N., Goredema Adela, KEOSHKERIAN Barkev, Vella Sarah J.
Принадлежит:

Methods for printing a conductive object are provided which may comprise dispensing one of a first ink composition and a second ink composition towards a substrate surface to form a deposition region on the substrate surface or on a previously printed object on the substrate surface, wherein the first ink composition comprises an aqueous solution of a metal compound and the second ink composition comprises an aqueous solution of a stable free radical; dispensing the other of the first and second ink compositions in the deposition region to mix the first and second ink compositions and induce chemical reduction of the metal compound by the stable free radical and precipitation of the metal of the metal compound; and removing solvent from the deposition region, thereby forming a conductive object comprising the precipitated metal. 1. A method for printing a conductive object , the method comprising:(a) dispensing one of a first ink composition and a second ink composition towards a substrate surface to form a deposition region on the substrate surface or on a previously printed object on the substrate surface, wherein the first ink composition comprises an aqueous solution of a metal compound and the second ink composition comprises an aqueous solution of a stable free radical,(b) dispensing the other of the first and second ink compositions in the deposition region to mix the first and second ink compositions and induce chemical reduction of the metal compound by the stable free radical and precipitation of the metal of the metal compound, and(c) removing solvent from the deposition region, thereby forming a conductive object comprising the precipitated metal.2. The method of claim 1 , wherein (b) occurs prior to drying the deposition region containing one of the first and second ink compositions.3. The method of claim 1 , wherein (a) and (b) occur at a dispensing temperature of less than 60° C.4. The method of claim 3 , wherein the dispensing temperature is room ...

Подробнее
Номер записи: 29
03-01-2019 дата публикации

Method and material for additive manufacturing

Номер: US20190001590A1
Автор: Kenneth Lyle Tyler, Ryan C. Stockett
Принадлежит: CC3D LLC

A structure is disclosed that is additively manufactured. The structure may include at least one continuous reinforcement, and a healing matrix associated with the at least one continuous reinforcement. Wherein a cure energy is applied to the at least one continuous reinforcement at a time of failure, the healing matrix is caused to cure and shore up the at least one continuous reinforcement.

Подробнее
Номер записи: 30
03-01-2019 дата публикации

ACTIVE ENERGY RAY CURABLE COMPOSITION, ACTIVE ENERGY RAY CURABLE INK, INKJET INK, STEREOSCOPIC MODELING MATERIAL, ACTIVE ENERGY RAY CURABLE COMPOSITION CONTAINER, INKJET RECORDING METHOD, TWO-DIMENSIONAL OR THREE-DIMENSIONAL IMAGE FORMING APPARATUS, CURED PRODUCT, AND PROCESSED PRODUCT

Номер: US20190002716A1
Автор: Arita Manabu, Kobayashi Hiroki, Kohzuki Shizuka, Yoshino Mie
Принадлежит:

In accordance with some embodiments of the present invention, an active energy ray curable composition including a polymerizable compound composition is provided. When the active energy ray curable composition is formed into a film having an average thickness of 10 μm on a substrate and, after a lapse of 15 seconds, the film is irradiated with an active energy ray having a light quantity of 1,500 mJ/cmto become a cured product, the cured product satisfies the following conditions (1) and (2): 118-. (canceled)19. An active energy ray curable composition , wherein a cured product thereof has a storage elastic modulus of 1×10Pa or more at 60° C.20. The active energy ray curable composition of claim 19 , wherein the cured product has a glass transition temperature of 60° C. or more.21. The active energy ray curable composition of claim 19 , comprisinga polymerizable compound composition,{'sup': '2', 'wherein, when the active energy ray curable composition is formed into a film having an average thickness of 10 μm on a substrate and, after a lapse of 15 seconds, the film is irradiated with an active energy ray having a light quantity of 1,500 mJ/cmto become the cured product, the cured product satisfies the following condition: when the substrate is a polycarbonate substrate, an adhesion between the polycarbonate substrate and the cured product is 70 or more, the adhesion being measured according to a cross-cut adhesion test defined in Japanese Industrial Standards K5400.'}22. The active energy ray curable composition of claim 19 , wherein the polymerizable compound composition includes a polymerizable compound (A) capable of dissolving the polycarbonate substrate.23The active energy ray curable composition of claim 21 , wherein the polymerizable compound composition includes a monofunctional polymerizable compound (B) having one polymerizable ethylenic unsaturated double bond claim 21 , the homopolymer of which having a glass transition temperature of 90° C. or more.24. ...

Подробнее
Номер записи: 31
13-01-2022 дата публикации

Paper-based 3d printing device and printing method

Номер: US20220009160A1
Автор: Guangxue CHEN, Jiangping YUAN, Ling CAI, Linyi Chen, Qifeng Chen, Xiaochun Wang
Принадлежит: South China University of Technology SCUT

The present invention relates to a paper-based 3D printing device and a printing method. The paper-based 3D printing device comprises a printing platform, a three-axis linkage platform, a cutting head and an inkjet head. The printing platform is used for placing paper, and the three-axis linkage platform is arranged to, firstly, drive the cutting head to cut the corresponding paper along the contour of a preset model to form a cutting seam, and then drive the inkjet head to inkjet color toward the cutting seam along the contour of the preset model. The paper-based 3D printing device and the printing method save ink, and can directly spray the ink at the cutting seam, which is equivalent to coloring the outer surface of the model, effectively improving the coloring effect, making the coloring of the outer surface of the model uniform, eliminating the step of printing one by one.

Подробнее
Номер записи: 32
13-01-2022 дата публикации

SYSTEM AND METHOD FOR DEPLOYING, HARVESTING, AND IN-SITU THREE-DIMENSIONAL PRINTING OF STRUCTURES IN AN EXTRATERRESTRIAL ENVIRONMENT

Номер: US20220009162A1
Автор: Ballard Jason D., Jensen Evan, LeRoux Alex, McDaniel Michael
Принадлежит:

An apparatus, system and method are provided for launching, deploying and moving mobility platforms used to produce a three-dimensional product using additive printing. The product, or object, is made by collecting materials in-situ at an off-Earth celestial body. A sintering apparatus, such as a laser, is used to consolidate the planetary regrowth into a solid object. The apparatus can receive power, and can apply heat to assist in the consolidation process. The apparatus is moveable to the build site, and includes a print head having a collector for receiving collected materials, a conditioner for sintering and heating the collected materials, and an extruder, specifically a slip form opening in which the materials can be dispersed over the surface of the extraterrestrial body where the powder form of the conditioned materials are sintered, fused, or consolidated into a hard solid bead of material. 1. A system for in-situ production of a three-dimensional object on a surface of an extraterrestrial body , comprising:a transceiver located on the extraterrestrial body for receiving control information from a mission controller located on Earth and sending status information back to the mission controller;a collector coupled to the transceiver for collecting materials from the surface of the extraterrestrial body;a conditioner coupled to the collector for sintering and heating the collected materials; andan extruder coupled to the conditioner for placing the conditioned materials over a surface of the extraterrestrial body depending on the control information received from the mission controller.2. The system of claim 1 , wherein the collector comprises:a hopper for receiving the materials;an auger for applying a layer of the materials emitted from the hopper upon a pre-existing bead formed over the surface of the extraterrestrial body; anda slip form having an upper surface extending above the applied layer of the materials and having parallel opposed lateral ...

Подробнее
Номер записи: 33
13-01-2022 дата публикации

ADDITIVE MANUFACTURING METHOD FOR DISCHARGING INTERLOCKING CONTINUOUS REINFORCEMENT

Номер: US20220009165A1
Автор: Stockett Ryan C., Tyler Kenneth Lyle
Принадлежит: Continuous Composites Inc.

An additive manufacturing method is disclosed. The method may include directing into a print head a reinforcement having a continuous axial core and integral branches extending radially outward from the continuous axial core. The method may also include coating the reinforcement in a matrix, and softening a portion of a track of the coated reinforcement that was previously discharged from the print head. The method may further include discharging from the print head a track of the coated reinforcement adjacent the previously discharged track of the coated reinforcement, such that cross-bonding of the integral branches occurs between the discharging track of the coated reinforcement and the softened portion of the previously discharged track of the coated reinforcement. 1. A system for additively manufacturing a composite structure , comprising:a support moveable in multiple dimensions; anda print head moveable by the support during discharge of a material that forms the composite structure, the print head having an inner dimension less than a corresponding outer dimension of the material after the material is discharged.2. The system of claim 1 , wherein the outer dimension of the material includes a dimension at a cross-section of the material.3. The system of claim 1 , wherein the print head includes a chamber configured to wet a continuous reinforcements with a matrix to form the material.4. The system of claim 1 , further including a first device configured to at least soften the material at a first side of the print head.5. The system of claim 4 , further including a compactor configured to press the material against a previously discharged track of the material.6. The system of claim 5 , wherein the compactor is located at a side of the print head opposite the first device.7. The system of claim 4 , further including a second device configured to harden the material at a second side of the print head opposite the first side.8. The system of claim 7 , further ...

Подробнее
Номер записи: 34
13-01-2022 дата публикации

THREE-DIMENSIONAL IMAGING APPARATUS HAVING MULTIPLE PASSIVE NOZZLES FOR MODELING A MULTI MATERIAL THREE-DIMENSIONAL OBJECT

Номер: US20220009169A1
Автор: MOOSBERG MATS
Принадлежит: EM EMO SOLUTIONS AB

The present invention relates to a three dimensional imaging apparatus (3D printer) having a print head unit with multiple passive micro-sized nozzles, wherein the passive micro-sized nozzles are also integrated with material interfaces. The print head unit comprises a nozzle gripper mechanism for picking said passive micro-sized nozzle, a filament or rod feeding mechanism for feeding the material, and a heating mechanism arranged for contactless heating regulating of the lower portion of said passive micro-sized nozzle. A method for printing a three-dimensional object of multi-materials by using an innovative three dimensional imaging apparatus having a print head with multiple passive nozzles is also disclosed. The three-dimensional imaging apparatus is capable of providing different types of materials as well as different color of the materials for creating three-dimensional object. 1. A three-dimensional imaging apparatus for modeling a multi-material three-dimensional object on a layer-by-layer basis in accordance with a computer aided design (CAD) image of said object , comprising:A printer holding frame;A gantry motion system;A print head unit, wherein said print head unit is fixed on said gantry motion system;An arrangement for supplying multiple filament materials;A rack arrangement for holding a plurality of passive micro-sized nozzles, wherein each passive micro-sized nozzle pre-loaded with a material;A build platform on which said object is formed;Wherein said print head unit comprises a nozzle gripper mechanism for picking said passive micro-sized nozzle, a filament or rod feeding mechanism for feeding the material, and a heating mechanism arranged for contactless heating regulating of the lower portion of said passive micro-sized nozzle.2. The three-dimensional imaging apparatus for modeling a multi-material three-dimensional object according to claim 1 , wherein each passive micro-sized nozzle is configured to hold a filament or a rod of said material ...

Подробнее
Номер записи: 35
03-01-2019 дата публикации

Dynamic Holography Printing Device

Номер: US20190004476A1
Автор: Brian Mullins, Jamieson Christmas
Принадлежит: Dualitas Ltd

A printing device ( 106 ) includes a laser source ( 110 ) and a LCOS-SLM (Liquid Crystal on Silicon Spatial Light (Modulator, 112 ). The printing device generates a laser control signal and a LCOS-SLM control signal. The laser source generates a plurality of incident laser beams based on the laser control signal. The LCOS-SLM receives the plurality of incident laser beams, modulates the plurality of incident laser beams based on the LCOS-SLM control signal, and generates a plurality of holographic wavefronts ( 214, 216 ). Each holographic wavefront forms at least one focal point. The printing device cures a surface layer of a target material ( 206 ) at interference points of focal points of the plurality of holographic wavefronts. The cured surface layer of the target material forms a two-dimensional printed content.

Подробнее
Номер записи: 36
20-01-2022 дата публикации

ADDITIVELY MANUFACTURING FLUORINE-CONTAINING POLYMERS

Номер: US20220016829A1
Автор: Messman Jamie Michael, Selter Thomas Matthew
Принадлежит: Honeywell Federal Manufacturing & Technologies, LLC

A system and method of additively manufacturing a part including electrically conductive or static dissipating fluorine-containing polymers. The method includes depositing fluorine-containing polymer additive manufacturing material onto a build platform, selectively cross-linking portions of the deposited additive manufacturing material, and curing the selectively cross-linked portions such that the part is at least one of electrically conductive and static dissipating. 1. A method of forming a part via additive manufacturing , the method comprising the steps of:depositing additive manufacturing material onto a build platform, the additive manufacturing material including fluorine-containing polymers being at least one of electrically conductive and static dissipating;selectively cross-linking portions of the deposited additive manufacturing material; andcuring the selectively cross-linked portions such that the part is at least one of electrically conductive and static dissipating.2. The method of claim 1 , wherein the step of selectively cross-linking portions of the deposited additive manufacturing material includes directing an energy source at the portions of the deposited additive manufacturing material according to a computer-aided design.3. The method of claim 1 , wherein the steps of depositing the additive manufacturing material and selectively cross-linking portions of the deposited additive manufacturing material are performed simultaneously via fused filament fabrication.4. The method of claim 1 , the additive manufacturing material including at least one of graphite claim 1 , graphene claim 1 , and carbon with the fluorine-containing polymers.5. The method of claim 4 , further comprising a step of adding a functional material to the additive manufacturing material to enhance mixing of the at least one of graphite claim 4 , graphene claim 4 , and carbon with the fluorine-containing polymers to form an additive manufacturing mixture.6. The method of ...

Подробнее
Номер записи: 37
20-01-2022 дата публикации

PROCESS FOR ADDITIVE MANUFACTURING AND SYSTEM

Номер: US20220016839A1
Автор: Fey Georg
Принадлежит:

The invention relates to a method for additively manufacturing at least one three-dimensional object () by means of a system, wherein a coating unit () is stopped in a segment (A; B; C; D) and/or one of its sub-segments (A; A; B; B; C; C; D; D) as a parking segment. Furthermore, the invention relates to a system for additive manufacturing of three-dimensional objects and a computer-readable storage medium. 1. A method for the additive manufacturing of an object by means of a system which has a building space , a building platform within the building space , on which the object to be manufactured can be built up layer by layer , at least one coating unit for the layer-by-layer application of the build-up material in a building plane , which is provided parallel to the building platform , and at least a first irradiation unit and a second irradiation unit for locally selective solidification of the build-up material in the building plane , subdividing the building space into at least a first and a second segment along a direction of extension of the construction building platform, where at least one of the segments is formed as a single segment or at least one of the segments is subdivided into at least two sub-segments and to each segment and/or the sub-segments of a segment at least one of the irradiation units is assigned;', 'applying at least one layer of the build-up material by means of the coating unit moving along the segments;', 'activating the irradiation unit associated with the respective segment or at least one of the sub-segments for selectively solidifying the segment or at least one of the associated sub-segments as soon as the coating unit has left the respective segment or sub-segment;', 'deactivating the irradiation unit as soon as an irradiation period is reached and the segment or sub-segment is solidified;', 'stopping of the coating unit in any selectively solidified segment or sub-segment of the subsequent segments as a parking segment,, ' ...

Подробнее
Номер записи: 38
20-01-2022 дата публикации

THREE-DIMENSIONAL ELECTRODEPOSITION SYSTEMS AND METHODS OF MANUFACTURING USING SUCH SYSTEMS

Номер: US20220018034A1
Автор: Jiang Junhua, Mariani Robert D.
Принадлежит:

An electrodeposition system, for additive manufacturing of a three-dimensional structure, includes at least one electrochemical cell. The at least one electrochemical cell includes a receptacle containing an electrolytic bath. At least one nozzle opens from the receptacle toward and proximate a substrate, which is configured as a working electrode of the at least one electrochemical cell. The at least one electrochemical cell also includes a counter electrode disposed in the electrolytic bath. In a method for forming a three-dimensional structure, a metal salt, dissolved in the electrolytic salt, flows through the nozzle to deposit a metal of the metal salt on a surface of the substrate configured as the working electrode. The system may be configured for relative movement between the at least one nozzle and the substrate, enabling additive manufacturing of a three-dimensional structure by electrodeposition. 1. An electrodeposition system for additive manufacturing of a three-dimensional structure , the electrodeposition system comprising: a receptacle containing an electrolytic bath;', 'at least one nozzle opening from the receptacle toward and proximate a substrate configured as a working electrode of the at least one electrochemical cell; and', 'a counter electrode disposed in the electrolytic bath., 'at least one electrochemical cell comprising2. The electrodeposition system of claim 1 , further comprising at least one of an electromechanical arm and an XYZ platform configured to control relative movement between the at least one nozzle and the substrate.3. The electrodeposition system of claim 1 , further comprising at least one controller configured to apply a current or voltage to the counter electrode and the substrate configured as the working electrode.4. The electrodeposition system of claim 1 , wherein the electrolytic bath comprises an ionic liquid and at least one a nuclear fuel material salt dissolved in the ionic liquid.5. The electrodeposition ...

Подробнее
Номер записи: 39
12-01-2017 дата публикации

AN ADDITIVE MANUFACTURING SYSTEM WITH A MULTI-ENERGY BEAM GUN AND METHOD OF OPERATION

Номер: US20170008126A1
Автор: Beals James T., Long Yu, Zhang Yan
Принадлежит:

An additive manufacturing system includes an energy gun having a plurality of energy source devices each emitting an energy beam. A primary beam melts a selected region of a substrate into a melt pool and at least one secondary beam heat-conditions the substrate proximate the melt pool to reduce workpiece internal stress and/or enhance micro-structure composition of the workpiece. 1. An energy gun of an additive manufacturing system for producing a workpiece from a substrate , the energy gun comprising:a plurality of energy beams constructed and arranged to follow one-another.2. The energy gun set forth in wherein the plurality of energy beams includes a first energy beam for producing a melt pool from the substrate and a second energy beam for post heating to control a solidification rate of the melt pool.3. The energy gun set forth in wherein the plurality of energy beams includes a first energy beam for producing a melt pool from the substrate and a second energy beam for pre-heating the substrate associated with the melt pool.4. The energy gun set forth in wherein the substrate is a powder.5. The energy gun set forth in wherein the plurality of energy beams have different frequencies.6. The energy gun set forth in further comprising:a plurality of energy source devices wherein each one of the plurality of energy source devices emits a respective one of the plurality of energy beams.7. The energy gun set forth in wherein the plurality of energy sources have fiber optic outputs.8. The energy gun set forth in wherein each one of the plurality of energy beams impart a hot spot upon the substrate at pre-arranged distances from one-another and the plurality of energy source devices are constructed and arranged to move the hot spots in unison across the substrate at a controlled velocity.9. The energy gun set forth in further comprising:a lens for focusing at least one of the plurality of energy beams.10. The energy gun set forth in wherein the plurality of energy ...

Подробнее
Номер записи: 40
12-01-2017 дата публикации

Machine Tool System and Method for Additive Manufacturing

Номер: US20170008127A1
Автор: Chaphalkar Nitin, Hranka Karl, Hyatt Gregory A., Panzarella Michael J.
Принадлежит: DMG Mori Advanced Solutions Development

Methods and apparatus for performing additive manufacturing processes using a machine tool may include controlling an orientation of a processing head to control the tangential angle of a fabrication energy beam, a feed powder nozzle, or both. The orientation of a non-circular energy beam may be control to more evenly distribute the energy beam across a width of a tool path. Additionally or alternatively, the orientation of the feed powder nozzle may be controlled to project toward a powder target that is spaced from a beam target. The powder target may be directed to a trailing edge of a beam spot formed by the energy beam to increase the amount of powder incorporated into a melt pool formed by the energy beam. Alternatively, the powder target may be directed to a leading edge of the beam spot to provide a self-correcting feature to address thickness errors formed in previous layers of added material. 1. A method of depositing material on a substrate using a machine tool for use with a fabrication energy supply and a feed powder/propellant supply , the method comprising:securing a substrate in a first tool holder;securing a processing head assembly in a second tool holder, the processing head assembly including a nozzle defining a fabrication energy outlet operably coupled to the fabrication energy supply and having a non-circular shape, and a nozzle exit operably coupled to the feed powder/propellant supply;projecting a fabrication energy beam from the fabrication energy outlet onto the substrate to form an energy spot at a target area of the substrate, a profile of the energy spot having a non-circular shape corresponding to the non-circular shape of the fabrication energy outlet;projecting feed powder/propellant from the nozzle exit onto the target area of the substrate;causing relative movement between the first and second tool holders so that the energy spot traverses a tool path along the substrate, wherein movement of the energy spot defines a spot ...

Подробнее
Номер записи: 41
12-01-2017 дата публикации

METHODS OF USING THERMOPLASTIC POLYURETHANES IN SELECTIVE LASER SINTERING AND SYSTEMS AND ARTICLES THEREOF

Номер: US20170008233A1
Автор: Ault Edward W., JR. Joseph J., Plessers An, Vermunicht Geert, Vontorcik
Принадлежит:

The present invention relates to systems and methods for solid freeform fabrication, especially selective laser sintering, as well as various articles made using the same, where the systems and methods utilize certain thermoplastic polyurethanes which are particularly suited for such processing. The useful thermoplastic polyurethanes are derived from (a) a polyisocyanate component, (b) a polyol component, and (c) an optional chain extender component; wherein the resulting thermoplastic polyurethane has a melting enthalpy of at least 5.5 J/g, a Tc (crystallization temperature) of more than 70° C., a Δ(Tm:Tc) of from 20 to 75 degrees, where Δ(Tm:Tc) is the difference between the Tm (melting temperature) and Tc. 1. A system for fabricating a three-dimensional object , comprising a solid freeform fabrication apparatus that selectively fuses layers of powder;wherein said powder comprises a thermoplastic polyurethane derived from (a) a polyisocyanate component, (b) a polyol component, and (c) an optional chain extender component;wherein said powder has an average particle diameter of less than 200 microns;wherein the resulting thermoplastic polyurethane has a melting enthalpy of at least 5.5 J/g;wherein the resulting thermoplastic polyurethane has a Tc of at least 70; andwherein the resulting thermoplastic polyurethane has a Δ(Tm:Tc) of between 20 and 75 degrees.2. A method of fabricating a three-dimensional object , comprising the step of: (I) operating a system for producing a three-dimensional object from a powder;wherein said system comprises a solid freeform fabrication apparatus that selectively fuses layers of powder; so as to form the three-dimensional object;wherein said powder comprises a thermoplastic polyurethane derived from (a) a polyisocyanate component, (b) a polyol component, and (c) an optional chain extender component;wherein said powder has an average particle diameter of less than 200 microns;wherein the resulting thermoplastic polyurethane has a ...

Подробнее
Номер записи: 42
12-01-2017 дата публикации

ACTIVE-ENERGY-RAY-CURABLE COMPOSITION, COMPOSITION STORED CONTAINER, TWO-DIMENSIONAL OR THREE-DIMENSIONAL IMAGE FORMING APPARATUS, METHOD FOR FORMING TWO-DIMENSIONAL OR THREE-DIMENSIONAL IMAGE, AND CURED PRODUCT

Номер: US20170008325A1
Автор: Hiraoka Takao, Iio Masato, Miki Daisuke
Принадлежит:

An active-energy-ray-curable composition including at least one monofunctional (meth)acrylate, at least one multifunctional (meth)acrylate, and at least one polyester-structure-containing polymer. Preferable is an aspect where the active-energy-ray-curable composition further includes a polymer obtained through polymerization of at least one selected from the group consisting of styrene, styrene derivatives, acrylic acid esters, and acrylic acid. 1. An active-energy-ray-curable composition comprising:at least one monofunctional (meth)acrylate;at least one multifunctional (meth)acrylate; andat least one polyester-structure-containing polymer.2. The active-energy-ray-curable composition according to claim 1 , further comprisinga polymer obtained through polymerization of at least one selected from the group consisting of styrene, styrene derivatives, acrylic acid esters, and acrylic acid.3. The active-energy-ray-curable composition according to claim 1 , further comprising:at least one polymerization initiator; andat least one polymerization inhibitor,wherein when an amount of the at least one polymerization initiator is defined as A % by mass, an amount of the at least one polymerization inhibitor is 0.01×A % by mass or more.4. The active-energy-ray-curable composition according to claim 3 ,wherein the at least one polymerization inhibitor has two hydroxyl groups in a molecule of the at least one polymerization inhibitor.5. The active-energy-ray-curable composition according to claim 1 ,wherein the at least one monofunctional (meth)acrylate has Stimulation Index of less than 3.6. The active-energy-ray-curable composition according to claim 1 ,wherein the at least one multifunctional (meth)acrylate has Stimulation Index of less than 3.7. The active-energy-ray-curable composition according to claim 1 ,wherein a weight average molecular weight of the polyester-structure-containing polymer is 100,000 or less.8. The active-energy-ray-curable composition according to claim ...

Подробнее
Номер записи: 43
12-01-2017 дата публикации

Dental appliance having ornamental design

Номер: US20170008333A1
Автор: Chunhua Li, David Mason, Shiva Sambu, Yan Chen
Принадлежит: Align Technology Inc

A dental appliance having an integrally formed reservoir and/or an ornamental design integrated thereon. The ornamental design can be selected or customized by a patient. The design can be created by directing energy to the dental appliance to alter a material property of at least a portion of the appliance to create the design. Alternatively, a groove or recess can be formed on a surface of the appliance to either mechanically retain an ornamental design or the groove or recess can be filled with ink to form the design. The appliance, including the integrally formed reservoir, can be formed using direct fabrication techniques.

Подробнее
Номер записи: 44
11-01-2018 дата публикации

CONTACT TIP CONTACT ARRANGEMENT FOR METAL WELDING

Номер: US20180009052A1
Автор: FORSETH Trond, KRISTIANSEN André, RAMSLAND Arne, STRUKSNES Knut
Принадлежит:

A contact tip assembly having an electric contact unit containing a contact tip with an electric energy source, where the electric contact unit is positioned at a distance away from the outlet opening of a guide. 1. A contact tip assembly , comprising:a guide having a longitudinal center axis, a first end, and an opposite second end, and a center bore extending and running along the longitudinal center axis of the guide from its first end to its second end;an electrically insulating lining inside of the center bore and extending at least from the first end to the second end of the guide; andan electric contact unit containing a contact tip in electric contact with an electric energy source, the electric contact unit arranged to contact a metal wire with the contact tip past the second end of the guide.2. The contact tip assembly of claim 1 , further comprising a wire pressing assembly for pressing the metal wire into contact with the contact tip of the electric contact element.3. The contact tip assembly of claim 1 , further comprising a contact element pressing assembly for pressing the contact tip of the electric contact element onto the metal wire.4. The contact tip assembly of claim 1 , further comprising a wire pressing assembly and a contact element pressing assembly.5. The contact tip assembly of claim 1 , where the electrically insulating lining:comprises a guide channel having an inlet opening at the first end and an outlet opening at the second end and running through the electrically insulating lining along the longitudinal center axis, andguides a metal wire being passed through the linear cylindrical guide channel from the inlet opening towards and further out of the outlet opening;6. The contact tip assembly of claim 1 , wherein the electric contact unit is positioned at a distance away from the outlet opening.7. The contact tip assembly of claim 1 , further comprising a bottom opening in the bottom of the guide.8. The contact tip assembly of claim 7 , ...

Подробнее
Номер записи: 45
11-01-2018 дата публикации

Discrete Assemblers Utilizing Conventional Motion Systems

Номер: US20180009110A1
Автор: Carney Matthew Eli, Gershenfeld Neil, Jenett Benjamin, Langford William
Принадлежит:

An alternative to additive manufacturing is disclosed, introducing an end-to-end workflow in which discrete building blocks are reversibly joined to produce assemblies called digital materials. Described is the design of the bulk-material building blocks and the devices that are assembled from them. Detailed is the design and implementation of an automated assembler, which takes advantage of the digital material structure to avoid positioning errors within a large tolerance. To generate assembly sequences, a novel CAD/CAM workflow is described for designing, simulating, and assembling digital materials. The structures assembled using this process have been evaluated, showing that the joints perform well under varying conditions and that the assembled structures are functionally precise. 1. An apparatus for automated assembly of digital materials made up of individual building blocks as parts , each having a discrete set of possible positions and orientations that structurally interlock with neighboring building blocks such that they form a press-fit joint and register to a lattice , the apparatus comprising:a multi-axis motion gantry for positioning a toolhead spatially with respect to a structure being built, and for adding intentional compliance between the toolhead and the structure being built; anda part placement mechanism used to drive a blade that pushes parts out of a magazine and into the assembled structure, the part placement mechanism having an alignment mechanism to register the toolhead with the lattice, and the magazine containing storage for parts onboard within the part placement mechanism;an interface to control the apparatus, enabling online verification of part-placement and measurement of toolhead wear.2. The apparatus of claim 1 , wherein the axes of the multi-axis motion gantry use polymer linear guideways and a flexural mechanism to add the intentional compliance between the build-front and the toolhead and along and in rotation about the ...

Подробнее
Номер записи: 46
27-01-2022 дата публикации

ADDITIVE MANUFACTURING SYSTEM USING INTERLINKED REPEATING SUBUNITS

Номер: US20220024120A1
Автор: YEOH Ivan Li Chuen
Принадлежит:

An additive manufacturing system and an input material that overcomes that need to heat and extrude solidifying materials to create a three-dimensional structure. The system arranges subunits of the input material into repeating, interlinked subunits that can be arranged to manufacture a three-dimensional structure that is flexible but also has sufficient structural integrity to retain a desired shape during the additive manufacturing process or post-manufacturing usage. During the additive manufacturing process, the flexible input material can be manipulated and reformed to match the shape and structure of a target three-dimensional structure, upon which the manufactured three-dimensional structure is based. As elongated units of the input material are received by the additive manufacturing machine, the machine assembles the input material into the interlinked, repeating subunits, thereby removing the need to heat and extrude an input material to create a structure. 1. A method of producing a 3D structure via additive manufacturing , the method comprising the steps of:providing a desired 3D structure;transposing the desired 3D structure into a representation comprising repeating subunits;translating the repeating subunits representation into a sequence of material arrangement operations, such that an input material can be arranged into a plurality of interlinked subunits that resemble the desired 3D structure;inserting the input material into a stitch additive manufacturing machine;arranging the input material into the plurality of interlinked subunits that resemble the desired 3D structure;producing a stitch additive manufactured 3D structure based on the provided desired 3D structure, the produced stitch additive manufactured 3D structure including the plurality of interlinked subunits.2. The method of claim 1 , wherein the step of arranging the input material into the plurality of interlinked subunits further comprises the step of:interlinking subunits of the ...

Подробнее
Номер записи: 47
27-01-2022 дата публикации

SLED CONFIGURATIONS AND METHODS OF OPERATION FOR THE MANUFACTURE OF THREE-DIMENSIONAL OBJECTS

Номер: US20220024124A1
Автор: Hartmann Anders, HOPKINSON Neil, Tjellesen Frederik
Принадлежит:

Apparatus () for manufacturing a three-dimensional object from a powder, the apparatus () comprising: a build bed () having a build area (), wherein successive layers of said three-dimensional object are formed in the build bed (); a powder distribution sled () operable to distribute a layer of powder within the build area (), the powder distribution sled () being driveable in a first direction along a first axis, across the build area (), and driveable in a second direction, opposite to the first direction, along the first axis; and a print sled () operable to deposit a pattern of fluid onto the layer of powder within the build area () to define the cross section of said object in said layer, the print sled () being driveable in the first direction along a second axis across the build area, and driveable in the second direction along the second axis; wherein the first axis is parallel to, or coaxial with, the second axis; wherein the print sled () comprises one or more droplet deposition heads () for depositing the fluid, a first radiation source assembly (L), and a second radiation source assembly (L); wherein the powder distribution sled () comprises a powder distribution device () for distributing the powder, a third radiation source assembly (L) and a fourth radiation source assembly (L); and wherein each of the first, second, third and fourth radiation source assemblies is operable to both preheat and sinter powder within the build area (). A method of manufacturing a three-dimensional object from a powder using such apparatus is also provided. 1. Apparatus for manufacturing a three-dimensional object from a powder , the apparatus comprising:a build bed having a build area, wherein successive layers of said three-dimensional object are formed in the build bed;a powder distribution sled operable to distribute a layer of powder within the build area, the powder distribution sled being driveable in a first direction along a first axis, across the build area, and ...

Подробнее
Номер записи: 48
11-01-2018 дата публикации

Free-Form Spatial 3-D Printing Using Part Levitation

Номер: US20180009158A1
Автор: Goldschmid Josh H., Harkness William A.
Принадлежит:

A part is fabricated by an additive manufacturing process while levitating in space. Constituent features of the part are formed by 3-D printing. A part levitation system allows the spatial orientation of the part to be manipulated relative to one or more print heads. 1. An additive fabrication method , comprising:forming a feature of a part by printing material into a space;levitating the part by acoustic levitation;changing a spatial orientation of the part while the part is levitating;forming another feature of the part by printing material into the space; andrepeating the steps of changing the spatial orientation of the part and printing material into the space until an entire part is formed.2. The additive fabrication method of claim 1 , wherein levitating the part by acoustic levitation further comprises using an acoustic levitation system comprising:a number of pairs of acoustic radiators;a number of pairs of acoustic reflectors;wherein the number of pairs of acoustic radiators and the number of pairs of acoustic reflectors face each other on opposite side of the space forming an acoustic chamber within which the part is levitated.3. The additive fabrication method of claim 2 , wherein each of the number of pairs of acoustic radiators vibrates at a preselected frequency claim 2 , emitting a radiated sound wave that passes through the space and is reflected back from an associated pair of the number of pairs of acoustic reflectors as a reflected sound wave claim 2 , wherein the radiated wave and the reflected wave interfere with each other to produce a standing wave pattern defined by at least one node.4. The additive fabrication method of claim 3 , wherein a sound pressure force produced at the node is equal in magnitude to claim 3 , but opposite in direction to a gravitational force exerted on the part at a point in space where the node occurs trapping and levitating the part at the node.5. The additive fabrication method of claim 4 , wherein a change in one ...

Подробнее
Номер записи: 49
11-01-2018 дата публикации

METHOD, EQUIPMENT AND MATERIAL FOR 3D PRINTING AND DEPOSITION ON A SURFACE OR OBJECT WITH STRONG BOND

Номер: US20180009172A1
Автор: Amba Jai Prashant, Amba Rakshit
Принадлежит:

Three-dimensional effect or structure with a strong bond may be achieved on any surface such as on wood, stone, paper, ceramic, and rubber/polymer, sponge/foam, cloth, and glass, cement, building structures or metals. Before application of tile 3D structure, the surface is first prepared with at least on a layer that can bind a subsequent layer. This tie (compatible) layer material may comprise of the adhesive layer and another tie (compatible) layer such as thermoplastic film or coating. 3D printing filament materials with a different set of properties are combined using unique methods, apparatus to produce new structures, effects or parts with a unique combination of properties. Continuous application of tie layer and 3D printing for unique small or large objects can be achieved. 1. A method for three-dimensional printing , the method comprising:preparing a surface of a pre-made object by depositing at least one adhesive layer on the surface, wherein the adhesive layer is adapted to bind the surface of the object With a compatible layer;depositing the compatible layer on the adhesive layer; 'depositing at least a first material on the compatible layer b a deposition tool head to create a predefined structure on the pre-made object, the predefined structure including an article and an effect.', 'three-dimensional priming on the prepared surface by,'}2. The method of claim 1 , wherein the first material includes functional surface response stimuli (FSRS) material exhibiting functional surface response stimuli (FSRS) behavior.3. The method of claim 2 , wherein the object comprises a refill object that has a predefined structure having a surface area made compatible with a three-dimensional printing material.4. The method of claim 3 , wherein the object includes at least one of metal ceramic claim 3 , glass claim 3 , polymers claim 3 , paper claim 3 , fabric claim 3 , concrete or a combination thereof.5. The method of claim 3 , herein the FSRS material includes an ink ...

Подробнее
Номер записи: 50
14-01-2021 дата публикации

Microwave-Coupled 3D Printing System and Equipment for Food Design and Production

Номер: US20210008787A1
Автор: Bowen YAN, Daming Fan, HAO Zhang, Huayu YANG, Jianlian Huang, Jianxin Zhao, Wei Chen, Wenhua Gao, Zilong Zhao
Принадлежит: JIANGNAN UNIVERSITY

Disclosed are 3D printing equipment, a system, and a method for food design and production, belonging to the field of food technologies. A bipolar microwave heating antenna is disposed, to implement focused heating on a material in an extrusion nozzle. In addition, the bipolar microwave heating antenna breaks through a traditional multi-mode cavity heating method, thereby greatly reducing a volume of a heating cavity and facilitating integration with a desktop 3D printer. A microwave switch is controlled by using an extrusion instruction to achieve synchronization between extrusion and heating, and improve heating uniformity. Through joint operations of a 3D scanner, slicing software, and a 3D printer, processes of model making, slicing, and 3D printing are integrated. The microwave-coupled 3D printing system and equipment for food design and production provided in the present invention can quickly and centrally heat the material in the extrusion nozzle to instantly cure the extruded material, so that the extruded material has high mechanical strength, thereby improving modeling quality of a printed product, and effectively resolving problems of deformation, collapse, and the like of the printed product.

Подробнее
Номер записи: 51
14-01-2021 дата публикации

PROCESS AND APPARATUS FOR CHEMICAL SMOOTHING OF PLASTIC PARTS

Номер: US20210008819A1
Автор: Pfefferkorn Florian
Принадлежит:

The invention relates to a process and an apparatus for chemical smoothing of a plastic part () produced by selective layerwise consolidation of a construction material. The process comprises the steps of: temperature-controlling the plastic part to a first temperature; temperature-controlling solvent vapour () comprising a solvent to a second temperature; subjecting the plastic part () to the solvent vapour () temperature-controlled to the second temperature for a particular duration, wherein the subjecting of the plastic part () to the solvent vapour () has the result that an outer layer of the plastic part () is liquefied; and discharging at least a portion of the solvent vapour () after the particular duration, wherein the plastic part () is stationary from commencement of the temperature-controlling of the plastic part until termination of the discharging of the solvent vapour (). 110. A process for chemical smoothing of a plastic part () , comprising the following steps:{'b': '10', 'temperature-controlling the plastic part () to a first temperature;'}{'b': '8', 'temperature-controlling solvent vapour () comprising a solvent to a second temperature;'}{'b': 10', '8, 'claim-text': {'b': 10', '8', '10, 'wherein the subjecting of the plastic part () to the solvent vapour () has the result that an outer layer of the plastic part () is liquefied; and'}, 'subjecting the plastic part () to the solvent vapour () temperature-controlled to the second temperature for a particular duration,'}{'b': '8', 'claim-text': {'b': 10', '8, 'wherein the plastic part () is stationary from commencement of the temperature-controlling of the plastic part until termination of the discharging of the solvent vapour ().'}, 'discharging at least a portion of the solvent vapour () after the particular duration,'}210. The process according to claim 1 , wherein the step of temperature-controlling of the plastic part () comprises:{'b': 10', '1', '301', '7, 'positioning the plastic part () in a ...

Подробнее
Номер записи: 52
10-01-2019 дата публикации

POWDER BED FUSION APPARATUS AND METHODS

Номер: US20190009338A1
Автор: HALL Liam David, Mcfarland Geoffrey, McMurtry David Roberts, Sutcliffe Christopher John, WESTON Robin Geoffrey
Принадлежит: RENISHAW PLC

A powder bed fusion apparatus in which selected areas of a powder bed are solidified in a layer-by-layer manner to form a workpiece, the powder bed fusion apparatus including a build chamber for maintaining an inert atmosphere or (partial) vacuum, a build sleeve located within the build chamber, a build platform for supporting the powder bed movable in the build sleeve, a powder applicator for forming powder layers of the powder bed and a radiation device for generating and steering a radiation beam across a surface of the powder bed to solidify areas of each layer, wherein the build sleeve is mounted in the build chamber to be tiltable to cause displacement of powder from the build sleeve through an opening in the build sleeve. 127-. (canceled)28. A powder bed fusion apparatus in which selected areas of a powder bed are solidified in a layer-by-layer manner to form a workpiece , the powder bed fusion apparatus comprising a build chamber for maintaining an inert atmosphere or (partial) vacuum , a build sleeve located within the build chamber , a build platform movable in the build sleeve , the build platform for supporting a build substrate on which the object is built and a powder bed , a powder applicator for forming powder layers of the powder bed , a radiation device for generating and steering a radiation beam across a surface of the powder bed to solidify areas of each layer , and a tilting mechanism for tilting the build substrate with respect to the build sleeve such that the powder is freed from the object , the tilting mechanism arranged for tilting the build substrate when the build substrate is in a raised position above a top of the build sleeve.29. A powder bed fusion apparatus according to comprising a controller configured to raise the build platform at the end of a build to locate the build substrate at the top of the build sleeve and for tilting the build substrate with the tilting mechanism.30. A powder bed fusion apparatus according to wherein ...

Подробнее
Номер записи: 53
10-01-2019 дата публикации

3D PRINTING APPARATUS AND METHOD

Номер: US20190009460A1
Автор: CHEN Jinming, GE Yan, HUANG Haizhou, HUANG Jianhong, Li Jinhui, LIN Wenxiong, LIN Zixiong, LIU Huagang, RUAN Kaiming, WENG Wen, WU Hongchun, Zhang Zhi
Принадлежит: FUJIAN INSTITUTE OF RESEARCH ON THE STRUCTURE OF MATTER, CHINESE ACADEMY OF SCIENCE

A 3D printing apparatus with a radiation source, a workbench, and a liquid tank, wherein a workbench for supporting a three-dimensional object being constructed, and a liquid tank for containing a polymerizable liquid for constructing a three-dimensional object. The apparatus also includes a cover plate which is located in the liquid tank or on the top of the liquid tank; the radiation source irradiates from above the cover plate. The cover plate is an element transparent to the radiation source; and the lower surface of the cover plate is a covering surface which remains in contact with the polymerizable liquid during the printing process. 118-. (canceled)19. A 3D printing apparatus , comprising:a radiation source, a workbench and a liquid tank, wherein a workbench for supporting a constructed three-dimensional object, and a liquid tank for containing a polymerizable liquid for constructing a three-dimensional object, wherein the apparatus also includes a cover plate wherein the cover plate is located in the liquid tank or on the top of the liquid tank; the radiation source irradiates from above the cover plate which is an element transparent to the radiation source; and the lower surface of the cover plate is a covering surface which remains in contact with the polymerizable liquid during the printing process.20. The 3D printing apparatus according to claim 19 , wherein the covering surface is fixed or substantially fixed during the printing process.21. The 3D printing apparatus according to claim 19 , wherein when the cover plate is located on the top of the liquid tank claim 19 , the cover plate and the liquid tank constitute a closed container or a container with an opening; when the cover plate is located in the liquid tank claim 19 , the cover plate is fixed on the main structure or the liquid tank of the 3D printing apparatus wherein the liquid tank is a closed container or a container with an opening.22. The 3D printing apparatus according to claim 19 , ...

Подробнее
Номер записи: 54
10-01-2019 дата публикации

Method for Additive Manufacturing Using Filament Shaping

Номер: US20190009461A1
Автор: Armijo Armando, Bheda Hemant, MANTHA Chandrashekar, Mondesir Wiener, Nandu Sohil, Reese Riley
Принадлежит:

A method and apparatus for additive manufacturing wherein a fiber composite filament having an arbitrarily shaped cross section is softened and then flattened to tape-like form factor for incorporation into a part that is being additively manufactured. 120.-. (canceled)21. A system for additive manufacturing of at least a portion of a three-dimensional (3D) object , comprising:a build substrate configured to support said at least said portion of said 3D object;a feed subsystem configured to direct at least one feedstock from a source of at least one feedstock toward said build substrate, which at least one feedstock is usable for printing said at least said portion of said 3D object;at least one energy source configured to soften a portion of said at least one feedstock deposited over said build substrate;a shaper configured to apply pressure to said portion of said at least one feedstock deposited over said build substrate; anda controller operatively coupled to said feed subsystem, said at least one energy source and said shaper, wherein said controller is configured to (i) direct said feed subsystem to direct said at least one feedstock from said source toward said build substrate, wherein said portion of said at least one feedstock is deposited over said build substrate, (ii) direct said at least one energy source to soften said portion of said at least one feedstock deposited over said build substrate, wherein, after softening, said portion of said at least one feedstock is shapeable, and (iii) direct said shaper to press against said portion of said at least one feedstock.22. The system of claim 21 , wherein said controller is further configured to direct said feed subsystem to deposit one or more additional layers.23. The system of claim 21 , wherein said controller is configured to direct said shaper to alter a cross sectional shape of said portion of said at least one feedstock claim 21 , but a cross sectional area of said portion of said at least one ...

Подробнее
Номер записи: 55
10-01-2019 дата публикации

THREE-DIMENSIONAL PRINTING SYSTEM WITH ROTATING MEMBRANE

Номер: US20190009470A1
Автор: Reichental Avi N., Tringali Luciano, Zitelli Gianni
Принадлежит:

A 3D printing apparatus includes a tank holding a photo-curing liquid polymer. A transparent membrane forms a bottom surface of the tank. A circular-shaped disk is disposed below the membrane, and is supported by a frame that has a radiation-transparent printing window. The liquid polymer is cured into desired shapes by exposure to radiation as the membrane is rotated about an axis. The rotation of the membrane causes a first region thereof to be rotated out of the printing window and a second region thereof to be rotated into the printing window. A light source projects the radiation through the printing window, through the second region of the membrane, into the photo-curing liquid polymer and onto a focal plane in the photo-curing liquid polymer, thereby curing a portion of the photo-curing liquid polymer. 1. An apparatus , comprising:a tank configured to hold a photo-curing liquid polymer, the tank including a membrane that is transparent to a radiation emitted by a light source, the membrane forming a bottom surface of the tank and the tank having a tank sidewall;a circular-shaped disk disposed below the membrane, wherein the circular-shaped disk is transparent to the radiation;a frame configured to support the circular-shaped disk, wherein a base portion of the frame comprises a radiation-transparent printing window; andmeans for rotating the membrane about an axis of rotation, wherein the axis of rotation of the membrane is parallel to a propagation direction of the radiation.2. The apparatus of claim 1 , wherein the tank sidewall and the membrane are a unibody form.3. The apparatus of claim 1 , wherein the tank sidewall and the membrane are separately manufactured components and the membrane is friction fit to a lower portion of the tank sidewall.4. The apparatus of claim 1 , wherein the membrane is transparent to radiation within a first frequency band that includes one or more frequencies corresponding to activation frequencies of photo-curing agents ...

Подробнее
Номер записи: 56
11-01-2018 дата публикации

3D PRINTER PRINTHEAD, 3D PRINTER USING SAME, METHOD FOR MANUFACTURING MOLDED PRODUCT BY USING 3D PRINTER, METHOD FOR MANUFACTURING ARTIFICIAL TOOTH BY USING 3D PRINTER, AND METHOD FOR MANUFACTURING MACHINABLE GLASS CERAMIC MOLDED PRODUCT BY USING 3D PRINTER

Номер: US20180009696A1
Автор: Kim Hyeong Jun
Принадлежит: KOREA INSTITUTE OF CERAMIC ENGINEERING AND TECHNOLOGY

The present invention relates to a 3D printer printhead, a 3D printer using the same, a method for manufacturing a molded product by using the 3D printer, a method for manufacturing an artificial tooth by using the 3D printer, and a method for manufacturing a machinable glass ceramic molded product by using the 3D printer, the 3D printer printhead comprising: an inlet through which glass wire, which is a raw material, is introduced; a heating means for heating the glass wire introduced through the inlet; a melting furnace for providing a space in which the glass wire is fused; and a nozzle connected to the lower part of the melting furnace so as to temporarily store the fused glass or discharge a targeted amount of the fused glass, wherein the melting furnace includes an exterior frame made from a heat resistant material and an interior frame having a crucible shape, and the interior frame is made from platinum (Pt), a Pt alloy or graphite, which have a low contact angle, or a material having a surface coated with Pt or a diamond-like carbon (DLC) so as to prevent the fused glass from sticking thereto. According to the present invention, the molded product, the artificial tooth, and the machinable glass ceramic molded product can be manufactured with excellent mechanical properties, thermal durability, chemical durability and oxidation resistance and outstanding texture by using the glass wire as a raw material. 1. A 3D printer printhead comprising:an inlet thorough which a glass wire, which is a raw material, is introduced;a heating means configured to heat the glass wire introduced through the inlet;a melting furnace configured to provide a space in which the glass wire is melted to produce a molten glass; anda nozzle coupled to a lower part of the melting furnace to temporarily store the molten glass or discharge a desired amount of the molten glass,wherein the melting furnace comprises an outer frame made of a heat-resistant material and an inner frame having a ...

Подробнее
Номер записи: 57
10-01-2019 дата публикации

METHOD FOR ASSEMBLING THREE-DIMENSIONAL OPTICAL COMPONENTS AND ASSEMBLY KIT

Номер: US20190009481A1
Автор: Biskop Joris
Принадлежит:

A method for assembling a three-dimensionai optical component from a base body, including providing the base body and loading the base body on a substrate into a printer in a providing step, depositing droplets of printing ink on a first surface of the base body in a first printing step in order to build up an intermediate first pre-structure, depositing droplets of printing ink on a second surface of the base body in a second printing step in order to build up an intermediate second pre-structure, rotating the first pre-structure and arranging the first pre-structure on a support structure in a rearrangement step between the first printing step and the second printing step, wherein the support structure includes a carrier substructure and an extension of the base body rests at least partially on the carrier substructure. The teachings further relate to an assembled optical component and an assembly kit. 1. A method for assembling three-dimensional optical component from a base body , comprising:providing the base body and loading the base body on a substrate into a printer in a providing step,depositing droplets of printing ink on a f surface of the base body in a first printing step in order to build up an intermediate first pre-structure,depositing droplets of printing ink on a second surface of the base body in a second printing step in order to build up an intermediate second pre-structure,rotating the first pre-structure and arranging the first pre-structure on a support structure in a rearrangement step between the first printing step and the second printing step,wherein the support structure comprises a carrier substructure and an extension of the base body rests at least partially on the carrier substructure.2. The method according to claim 1 , wherein the support structure comprise deformation-control substructure.3. The method according to claim 1 , wherein the base body comprises a flat disk.4. The method according to claim 1 , wherein the substrate is a ...

Подробнее
Номер записи: 58
09-01-2020 дата публикации

SYSTEM AND METHOD FOR FORMING DIRECTIONALLY SOLIDIFIED PART FROM ADDITIVELY MANUFACTURED ARTICLE

Номер: US20200009646A1
Автор: Bui Tho X., Kasal Yathiraj, Martinez Edwin, Mittendorf Don, Otaluka Will, Woodward John
Принадлежит: HONEYWELL INTERNATIONAL INC.

A method of manufacturing a directionally solidified article of the present disclosure includes providing a collection of particulate material and additively manufacturing a first article with an outer wall from the particulate material. The outer wall defines at least part of a cavity. The cavity contains an amount of the particulate material. The method also includes encasing at least a portion of the first article with an outer member. The outer member defines an internal cavity that corresponds to the first article. The method further includes heating the outer member and the first article to melt the first article into a molten mass within the internal cavity of the outer member. Additionally, the method includes solidifying the molten mass along a predetermined solidification path within the outer member to form a second article that corresponds to at least a portion of the internal cavity of the outer member. 1. A manufacturing system for manufacturing a directionally solidified article from an additively manufactured article , the manufacturing system comprising:an additive manufacturing device having a support that is configured support a collection of particulate material, the additive manufacturing machine configured to additively manufacture a first article with an outer wall from the particulate material, the outer wall defining at least part of a cavity, the cavity containing an amount of the particulate material;an encasement device configured to form an outer member about at least a portion of the first article, the outer member defining an internal cavity that corresponds to the at least a portion of the first article;a heating device configured to heat the outer member and the first article to melt the first article into a molten mass within the internal cavity of the outer member; anda solidification device configured to solidify the molten mass along a predetermined solidification path within the outer member to form a second article that ...

Подробнее
Номер записи: 59
09-01-2020 дата публикации

PROCESSES AND SYSTEMS FOR DOUBLE-PULSE LASER MICRO SINTERING

Номер: US20200009655A1
Автор: Wu Benxin
Принадлежит:

Processes and systems that include one or more laser beam sources configured to provide laser irradiation with one or more laser pulse groups to at least a portion of powder particles on a solid surface at one or multiple locations thereof. Sintering laser pulse(s) is provided to induce coalition of at least some of the powder particles into a more continuous medium, and pressing laser pulse(s) is provided to produce pressure pulse(s) on at least a portion of the powder particles and/or the more continuous medium. Laser pulse groups may include one or more of the sintering laser pulses followed by one or more of the pressing laser pulses with a time delay between a last of the sintering laser pulse(s) and a first of the pressing laser pulse(s). 1. A laser sintering process comprising:providing powder particles on a solid surface so that at least a portion of the powder particles forms a material surface; and then or simultaneouslylaser irradiating the material surface with one or more laser pulse groups at one or multiple locations to induce coalition of at least some of the powder particles into a more continuous medium; one or more sintering laser pulses followed by one or more pressing laser pulses, wherein at least one of the sintering laser pulse(s) is different from at least one of the pressing laser pulse(s) in at least one parameter or characteristic selected from the group consisting of laser pulse duration, laser pulse energy, peak laser power within the laser pulse, laser spot size on the material surface, laser beam wavelength, the relation of laser power versus time within the laser pulse, spatial profile of laser beam intensity on the material surface, and any combination thereof; and', 'a time delay between a last one of the sintering laser pulse(s) and a first one of the pressing laser pulse(s)., 'wherein at least one of the one or more laser pulse group(s) comprises2. The laser sintering process of claim 1 , wherein the at least one laser pulse ...

Подробнее
Номер записи: 60
09-01-2020 дата публикации

COLD-SPRAY NOZZLE

Номер: US20200009657A1
Автор: BUCKNELL John Russell, Teng Alexander Pai-chung
Принадлежит:

Systems, apparatus, and method for manufacturing are disclosed. In an aspect, the apparatus may be a cold-spray nozzle. The cold-spray nozzle may include a variable diameter convergent part. The cold-spray nozzle may also include a variable diameter divergent part. The variable diameter divergent part may form a diffuser. Additionally, The cold-spray nozzle may include a ring portion. The ring portion may couple the variable diameter convergent part and the variable diameter divergent part. Additionally, the ring portion may control the opening to the diffuser. 1. A cold-spray nozzle comprising:a variable diameter convergent part;a variable diameter divergent part forming a diffuser; anda ring portion coupling the variable diameter convergent part and the variable diameter divergent part and controlling the opening to the diffuser.2. The cold-spray nozzle of claim 1 , wherein the variable diameter convergent part comprises a nozzle.3. The cold-spray nozzle of claim 2 , wherein the nozzle contains a series of hinges and overlapping sheets within the nozzle claim 2 , the hinges and overlapping sheets configured to control the diameter of the variable diameter divergent part.4. The cold-spray nozzle of claim 1 , wherein the variable diameter convergent part comprises a plug nozzle.5. The cold-spray nozzle of claim 4 , wherein a position of the plug nozzle controls a flow of a cold-spray.6. The cold-spray nozzle of claim 5 , wherein a position of the plug nozzle controls a flow of a cold-spray.7. A cold-spray device comprising:a material hopper;a pressurized gas feed coupled to the material hopper; and a variable diameter convergent part;', 'a variable diameter divergent part forming a diffuser; and', 'a ring portion coupling the variable diameter convergent part and the variable diameter divergent part and controlling the opening to the diffuser., 'a cold-spray nozzle coupled to the pressurized gas feed and configured to receive material from the material hopper, the ...

Подробнее
Номер записи: 61
09-01-2020 дата публикации

DIRECT-WRITING POLYIMIDE ADDITIVE MANUFACTURING MATERIAL AND PREPARATION METHOD THEREOF

Номер: US20200009784A1
Автор: Guo Yuxiong, Liu Zhilu, Wang Xiaolong, Yan Changyou, Zhou Feng
Принадлежит:

A method for preparing a direct-writing polyimide additive manufacturing (AM) material includes (1) conducting ultraviolet curing immediately after the photosensitive polyimide ink is subjected to direct-writing extrusion, to obtain a polyimide precursor formed member; and (2) heat-treating the polyimide precursor formed member obtained in step (1) to obtain the direct-writing polyimide AM material. The direct-writing polyimide AM material obtained by using the method of the present invention has excellent comprehensive properties. 1. A method for preparing a direct-writing polyimide additive manufacturing (AM) material , comprising:(1) conducting ultraviolet curing immediately after a photosensitive polyimide ink is subjected to direct-writing extrusion, to obtain a polyimide precursor formed member; and(2) heat-treating the polyimide precursor formed member obtained in step (1) to obtain the direct-writing polyimide AM material.2. The method of claim 1 , wherein a rate of the direct-writing extrusion in step (1) is 1-15 mm/s.3. The method of claim 2 , wherein a nozzle diameter of the direct-writing extrusion in step (1) is 50-500 μm.4. The method of claim 1 , wherein the direct-writing extrusion in step (1) comprises gas extrusion or screw extrusion.5. The method of claim 1 , wherein an intensity of an ultraviolet light source for ultraviolet curing in step (1) is 0.5-20 W/cm.6. The method of claim 1 , wherein the photosensitive polyimide ink of step (1) comprises the following components in parts by weight: 40-60 parts of a photocurable polyamide acid resin claim 1 , 10-50 parts of a diluent claim 1 , 1-10 parts of a chain extender claim 1 , 1-3 parts of an initiator and 5-40 parts of a solvent; and the photosensitive polyimide ink has a viscosity of 10-10cP.7. The method of claim 1 , wherein an atmosphere for heat treatment in step (2) comprises nitrogen gas claim 1 , inert gas or vacuum.8. The method of claim 1 , wherein heat treatment of step (2) includes: ...

Подробнее
Номер записи: 62
10-01-2019 дата публикации

ACTIVE-ENERGY-RAY-CURABLE COMPOSITION, THREE-DIMENSIONAL OBJECT PRODUCING METHOD, AND THREE-DIMENSIONAL OBJECT PRODUCING APPARATUS

Номер: US20190010259A1
Автор: IWATA Hiroshi, MATSUMURA Takashi, NAITO Hiroyuki, NIIMI Tatsuya, NORIKANE Yoshihiro
Принадлежит:

Provided is an active-energy-ray-curable composition including: a monomer (A) having a hydrogen-bonding capacity; and a compound (B) having a hydrogen-bonding capacity and containing straight-chain alkyl containing 4 or more carbon atoms, wherein a cured product of the active-energy-ray-curable composition is a solid that exhibits a compressive stress of 2 kPa or higher in response to compression by 1%, and wherein the active-energy-ray-curable composition is a liquid in an environment of 60 degrees C. 1. An active-energy-ray-curable composition comprising:a monomer (A) having a hydrogen-bonding capacity; anda compound (B) that has a hydrogen-bonding capacity and comprises straight-chain alkyl that comprises 4 or more carbon atoms,wherein a cured product of the active-energy-ray-curable composition is a solid that exhibits a compressive stress of 2 kPa or higher in response to compression by 1%, andwherein the active-energy-ray-curable composition is a liquid in an environment of 60 degrees C.2. The active-energy-ray-curable composition according to claim 1 ,wherein the compound (B) that has a hydrogen-bonding capacity and comprises straight-chain alkyl that comprises 4 or more carbon atoms comprises higher alcohol.3. The active-energy-ray-curable composition according to claim 1 ,wherein the compound (B) that has a hydrogen-bonding capacity and comprises straight-chain alkyl that comprises 4 or more carbon atoms comprises diol.4. The active-energy-ray-curable composition according to claim 1 ,wherein the monomer (A) having a hydrogen-bonding capacity comprises a water-soluble monofunctional ethylenically unsaturated monomer.5. The active-energy-ray-curable composition according to claim 1 ,wherein the compound (B) that has a hydrogen-bonding capacity and comprises straight-chain alkyl that comprises 4 or more carbon atoms is compatible with the monomer (A) having a hydrogen-bonding capacity and is a non-reactive compound.6. An active-energy-ray-curable composition ...

Подробнее
Номер записи: 63
09-01-2020 дата публикации

APPARATUS FOR THE TRANSFER OF BIO-INK

Номер: US20200010787A1
Автор: Guillemot Fabien, Vaucelle Romain, Viellerobe Bertrand
Принадлежит:

An apparatus for transferring bio-ink onto a target having a slide defining a receiving area of a film of fluid containing inhomogeneities, a laser source associated with controlled diversion means and an optical block for focusing in a plane of the fluid film in order to apply a local pulse, wherein the apparatus also comprises imaging means and means for analyzing images in order to recognize the geometric positions of the inhomogeneities in the film, and an observable feature of each of the inhomogeneities (size, shape factor, type of particles, age of the particle, density, type of biomaterial, molecule, etc.) recognized by the appropriate analysis, means. The apparatus further comprises selection means for selecting at least one of the inhomogeneous areas, and means for controlling the diversion in order to direct the laser beam toward the position of the inhomogeneous area and trigger the firing of the laser. 1. An apparatus for transferring bio-ink to a target , comprising:a slide defining a reception area for a fluid film containing heterogeneities;a laser associated with a controlled deflection device and an optical unit for focusing a laser beam emitted by the laser in a plane of the fluid film to apply a localized laser pulse, the slide being transparent to the laser beam,an imager located and configured to acquire an image of an imaging area of the fluid film, the imaging area being at least five times larger than a nominal cross-section of an inhomogeneity of the fluid film, the slide being transparent in the spectral domain of the imager;a computer configured to analyze the acquired image and recognize the geometric positions of the inhomogeneities in the film and an observable characteristic of each of the recognized imhomogeneities, andwherein the apparatus is configured to select at least one of the recognized inhomogeneous zones, and control the deflection device to direct the laser beam toward the position of the inhomogeneous zone and trigger the ...

Подробнее
Номер записи: 64
03-02-2022 дата публикации

METHOD FOR MATERIAL ADDITIVE MANUFACTURING OF AN INORGANIC FILTER SUPPORT AND RESULTING MEMBRANE

Номер: US20220032499A1
Автор: ANQUETIL Jérôme, Lescoche Philippe
Принадлежит: TECHNOLOGIES AVANCEES ET MEMBRANES INDUSTRIELLES

The present invention relates to a method for manufacturing at least one monolithic inorganic porous support () having a porosity comprised between 10% and 60% and an average pore diameter ranging from 0.5 μm to 50 μm, using a 3D printer type machine (I) to build, in accordance with a 3D digital model, a manipulable three-dimensional raw structure () intended to form, after sintering, the monolithic inorganic porous support(s) (). 11657421. A method for manufacturing monolithic inorganic porous support () having a porosity comprised between 10% and 60% and an average pore diameter ranging from 0.5 μm to 50 μm , using a 3D printing machine (I) including an extrusion head () movably mounted in space relative to and above a fixed horizontal plate () , said 3D printing machine allowing the deposition of a string () of inorganic composition () to build , from a 3D digital model (M) , a manipulable three-dimensional raw structure () intended to form the monolithic inorganic porous support(s) () , the method consisting of:{'b': '4', 'having the inorganic composition () including a powdery solid inorganic phase in the form of particles with an average diameter comprised between 0.1 μm and 150 μm, and a matrix,'}{'b': 6', '4', '7, 'sub': 'i,j', 'supplying the extrusion head () of the 3D printing machine (I) with the inorganic composition () and causing its extrusion to form the string (),'}{'b': 7', '5', '2, 'sub': 'i,j', 'building, using said string () on said horizontal plate (), the manipulable three-dimensional raw structure () in accordance with the 3D digital model (M),'}{'b': 2', '7, 'sub': 'i,j', 'accelerating the consolidation of the manipulable three-dimensional raw structure () in accordance with the 3D digital model (M) as the string () is extruded,'}{'b': '2', 'placing this manipulable three-dimensional raw structure () in a heat treatment furnace in order to carry out a sintering operation at a temperature comprised between 0.5 and 1 time the melting ...

Подробнее
Номер записи: 65
03-02-2022 дата публикации

CONSTRUCTION AND/OR MATERIALS-HANDLING MACHINE AND METHOD FOR GUIDING AND MOVING A WORKING HEAD

Номер: US20220032500A1
Автор: BRAMBERGER Robert, KÖGL Martin
Принадлежит: Liebherr-Werk Biberach GmbH

The invention relates to a method and a construction and/or a materials-handling machine for guiding and moving a working head, in particular a 3D print head, wherein at least three revolving tower cranes are attached to each other with their booms, wherein according to one aspect of the invention a guide beam carrying the working head is attached to at least two trolleys of two revolving tower cranes, and the working head is adjusted and moved in its working position by moving the trolleys along two booms of two revolving tower cranes. 1. A method for guiding and moving a working head comprising a 3D print head , wherein at least three revolving tower cranes having booms are attached to each other with their booms , and wherein a guide beam carrying the working head is fastened to at least two trolleys of two revolving tower cranes , the method comprising:setting and moving the working head in its working position by moving the trolleys along two booms of two revolving tower cranes.2. A method for guiding and moving a working head comprising a 3D print head , wherein at least three revolving tower cranes having booms are attached to one another with their booms , and wherein a system of cables comprises adjustable control cables and is fastened to the at least three revolving tower cranes , the method comprising:setting and moving the working head in its working position by adjusting the system of cables relative to the three revolving tower cranes fastened to one another.3. A construction and/or materials-handling machine for erecting a structure and/or manipulating a workpiece , comprising:a working head movably mounted on a supporting frame structure, wherein the supporting frame structure has at least three tower slewing cranes which each comprise an upright tower and at least one boom which is supported by the respective tower and is configured to be rotated about an upright slewing axis relative to the tower or together with the tower, wherein the tower ...

Подробнее
Номер записи: 66
03-02-2022 дата публикации

METHOD FOR PRINTING OBJECTS WITH INCLINATION ANGLES LESS THAN 45° WITH RESPECT TO BUILDING PLATE

Номер: US20220032535A1
Автор: Hikmet Rifat Ata Mustafa, HUIJBEN CORNELIS ADRIANUS MARIA, VAN HAL Paulus Albertus
Принадлежит:

Method for producing a 3D item () by means of fused deposition modelling, the method comprising a 3D printing stage comprising layer-wise depositing an extrudate () comprising 3D printable material (), to provide the 3D item () comprising 3D printed material (), wherein the 3D item () comprises a plurality of layers () of 3D printed material (), wherein the 3D printing stage comprises: •—a vertical support providing stage comprising providing a first layer () of 3D printed material (), wherein the first layer () has a first layer top part () with a first layer top height (HI ) relative to the substrate () and a first layer bottom part () with a first layer bottom height (H) relative to the substrate (), wherein the first layer () has a first layer height (HI) defined by the difference between the first layer top height (HI ) and the first layer bottom height (H), wherein the value of the first layer bottom height (H) is at least equal to the value of the first layer height (HI), and •—an in-air printing stage comprising supportless depositing a second layer () of 3D printed material () adjacent to and in contact with the first layer (), wherein the second layer () has a second layer top part (), wherein at least part of the second layer top part () extends over at least part of the first layer top part () and is conformal therewith. 1. A method for producing a 3D item by means of fused deposition modelling , the method comprising a 3D printing stage comprising layer-wise depositing an extrudate comprising 3D printable material , to provide the 3D item comprising 3D printed material , wherein the 3D item comprises a plurality of layers of 3D printed material , wherein the 3D printing stage comprises:a vertical support providing stage comprising providing a first layer of 3D printed material, wherein the first layer has a first layer top part with a first layer top height relative to a substrate and a first layer bottom part with a first layer bottom height relative ...

Подробнее
Номер записи: 67
03-02-2022 дата публикации

DETECTION OF DEFORMATION OF VATS

Номер: US20220032538A1
Автор: HASENZAHL Thomas, MICHALICA Thomas, Schmidt Christian, STAHL Christian
Принадлежит: DENTSPLY SIRONA Inc.

Device () for a system for layer-by-layer construction of a body (K) from a substance (S) which can be hardened by radiation, comprising a vat () having a vat base () for receiving the substance (S) which can be hardened by radiation, comprising a building platform () which is arranged above the vat base () and which is height-adjustable in relation to the vat base () and comprising a sensor () cooperating with the vat base (), wherein the vat base () is configured to be at least partially flexible, wherein a chamber () is provided wherein the chamber () is delimited by an underside of the vat base (), wherein the sensor () is adapted to detect a volume change of the chamber () and to provide a sensor signal from which a sign of the volume change can be determined. 1. Device for a system for layer-by-layer construction of a body (K) from a substance (S) which can be hardened by radiation , comprising:a vat having a vat base being configured to be at least partially flexible, wherein the vat is configured for receiving the substance (S) which can be hardened by radiation,a building platform which is arranged above the vat base and which is height-adjustable in relation to the vat base, anda sensor cooperating with the vat base, anda chamber that is delimited by an underside of the vat base,wherein the sensor is adapted to detect a volume change of the chamber and to provide a sensor signal from which a sign of the volume change can be determined,wherein the sensor is adapted to quantitatively detect a measured, variable directly or indirectly proportional to the volume of the chamber or to the volume change and to provide the measured variable as a sensor signal,wherein the sensor is a pressure sensor or a flow sensor such that the pressure sensor is adapted to detect a pressure and/or a pressure change of a compressible medium (M) received in the chamber, wherein the pressure change corresponds to the volume change, and such that the flow sensor is adapted and ...

Подробнее
Номер записи: 68
03-02-2022 дата публикации

SYSTEMS AND METHODS FOR BLOCKAGE REMOVAL IN THREE-DIMENSIONAL PRINTERS

Номер: US20220032546A1
Автор: Gozdz Antoni S., Hoffman Christopher, Roy-Mayhew Joseph, Wilson Bennett McClelland
Принадлежит:

Methods of printing using three dimensional printers are disclosed. The method includes feeding a printable material through a linear feed mechanism to a print head, detecting the printable material is jammed in the three-dimensional printer, and operating, in response to detecting that the printable material is jammed, the three-dimensional printer in a jam clearing mode. The jam clearing mode includes advancing a drive component of the linear feed mechanism, retracting the drive component of the linear feed mechanism, and repeating the advancing and retracting of the drive component of the linear feed mechanism. Three-dimensional printing systems are also disclosed. A three-dimensional printing system includes a print head, a linear feed mechanism operatively coupled to the print head, and a controller operatively coupled to the three-dimensional printing system. 1. A method of printing using a three-dimensional printer , the method comprising:feeding a printable material through a linear feed mechanism to a print head;detecting that the printable material is jammed in the three-dimensional printer; and advancing a drive component of the linear feed mechanism,', 'retracting the drive component of the linear feed mechanism, and', 'repeating the advancing and retracting of the drive component of the linear feed mechanism, wherein one advancing step and one retracting step comprises one cycle of the jam clearing mode., 'operating, in response to detecting that the printable material is jammed, the three-dimensional printer in a jam clearing mode, the jam clearing mode comprising2. The method of claim 1 , wherein detecting the jammed printable material includes detecting a force applied to the printable material by the drive component of the linear feed mechanism.3. The method of claim 2 , wherein detecting the force includes detecting a change in the motion of an idle component of the linear feed mechanism.4. The method of claim 1 , wherein the advancing of the drive ...

Подробнее
Номер записи: 69
03-02-2022 дата публикации

Kinetic disassembly of support structure system for additively manufactured rotating components

Номер: US20220032554A1
Автор: Dmytro Mykolayovych Voytovych, Evan Butcher, Jesse R. Boyer, Lawrence Binek, Matthew B. Kennedy, Vijay Narayan Jagdale
Принадлежит: Raytheon Technologies Corp

A rotary component may comprise a first structure configured to rotate about an axis and a second structure configured to rotate about the axis. A support structure may be coupled to the first structure at a first attachment location and to the second structure at a second attachment location. The support structure may be configured to separate from the first structure and the second structure in response to a centrifugal force generated by the first structure and the second structure rotating about the axis.

Подробнее
Номер записи: 70
11-01-2018 дата публикации

FLUID-COOLED CONTACT TIP ASSEMBLY FOR METAL WELDING

Номер: US20180014397A1
Автор: FALLA Tom-Erik, RAMSLAND Arne
Принадлежит:

Provided is a fluid-cooled contact tip assembly that can be used in methods and systems for manufacturing objects by solid freeform fabrication, especially titanium and titanium alloy objects, where the deposition rate is increased by increasing the flow rate of electric charge through the metal wire. 1. A fluid-cooled contact tip assembly , comprising:a guide; a contact tip connected to an electrical source; and', a coolant inlet;', 'an entry coolant channel connected to and in fluid communication with the coolant inlet;', 'an exit coolant channel connected to and in fluid communication with the entry coolant channel; and', 'a coolant outlet connected to and in fluid communication with the exit coolant channel; and, 'a cooling system that includes], 'an electric contact unit comprisinga wire pressing assembly configured to press the metal wire into contact with the contact tip of the electric contact element.2. The fluid-cooled contact tip assembly of in which the guide comprises:a longitudinal center axis, a first end, an opposite second end, and a center bore extending and running along the longitudinal center axis of the guide from the first end to the opposite second end through which a metal wire can be fed; and a coolant inlet connectable to be in fluid communication with a coolant supply inlet;', 'an incoming coolant channel connected to and in fluid communication with the coolant inlet;', 'an outgoing coolant channel connected to and in fluid communication with the incoming coolant channel; and', 'a coolant outlet connected to and in fluid communication with the outgoing coolant channel., 'a cooling system that includes3. The fluid-cooled contact tip assembly of claim 1 , wherein the entry coolant channel comprises a plurality of interconnected parallel channels in the vicinity of the contact tip.4. The fluid-cooled contact tip assembly of claim 1 , wherein the guide further comprises a bottom opening.5. The fluid-cooled contact tip assembly of claim 1 , ...

Подробнее
Номер записи: 71
18-01-2018 дата публикации

PORTABLE MANUFACTURING SYSTEM FOR ARTICLES OF FOOTWEAR

Номер: US20180014609A1
Автор: Bruce Robert M., LEE Eun Kyung, Sills Craig K.
Принадлежит:

A portable manufacturing system includes an additive manufacturing device and a braiding device. The system also includes systems for capturing customized foot information from a foot. The additive manufacturing device can be used to form a footwear last having a geometry corresponding to the customized foot information. The footwear last can be placed through the braiding device to form a braided component for an article of footwear. A welding device can be used to attach overlay components to the braided component. Sole components may be separately formed and attached to the braided component. 1. A portable manufacturing system , comprising:a portable housing defining and interior and including a towing system, wherein the towing system is configured to be attached to a towing vehicle so that the portable housing can be towed by the towing vehicle;an additive manufacturing device disposed within the interior of the portable housing; anda braiding device disposed within the interior of the portable housing,wherein the additive manufacturing device is configured to form a footwear last and wherein the braiding device is configured to form a braided footwear component on the footwear last.2. The portable manufacturing system according to claim 1 , wherein the portable housing is a semi-trailer.3. The portable manufacturing system according to claim 1 , wherein the portable housing is a shipping container.4. The portable manufacturing system according to claim 1 , wherein the portable manufacturing system further includes a sensing device claim 1 , the sensing device being configured to capture customized foot information from a foot claim 1 , and wherein the sensing device is disposed within the interior of the portable housing.5. The portable manufacturing system according to claim 1 , wherein the portable manufacturing system further includes a welding device and wherein the welding device is disposed within the interior of the portable housing.6. The portable ...

Подробнее
Номер записи: 72
19-01-2017 дата публикации

ADDITIVE MANUFACTURING WITH COOLANT SYSTEM

Номер: US20170014906A1
Автор: Frey Bernard, Joshi Ajey M., Krishnan Kasiraman, Kumar Ashavani, Ng Eric, Ng Hou T., Patibandla Nag B., Swaminathan Bharath
Принадлежит:

An additive manufacturing system includes a platen having a top surface to support an object being manufactured, a feed material dispenser to deliver a plurality of successive layers of feed material over the platen, an energy source positioned above the platen to fuse at least a portion of an outermost layer of feed material, and a coolant fluid dispenser to deliver a coolant fluid onto the outermost layer of feed material after at least a portion of the outermost layer has been fused. 1. An additive manufacturing system , comprising:a platen having a top surface to support an object being manufactured;a feed material dispenser to deliver a plurality of successive layers of feed material over the platen;an energy source positioned above the platen to fuse at least a portion of an outermost layer of feed material; anda coolant fluid dispenser to deliver a coolant fluid onto the outermost layer of feed material after at least a portion of the outermost layer has been fused.2. The system of claim 1 , wherein the coolant fluid dispenser includes a conduit configured to deliver coolant fluid simultaneously across a width of the platen claim 1 , and comprising an actuator coupled to the conduit to move the conduit along a length of the platen.3. The system of claim 2 , wherein the conduit comprises a plurality of spaced apart apertures extending across the width of the platen.4. The system of claim 2 , wherein the conduit comprises a contiguous slot extending across the width of the platen.5. The system of claim 2 , wherein the energy source is configured to apply heat to a region that scans at least along the length of the platen claim 2 , and the system is configured to cause the actuator to move the conduit in conjunction with motion of the region along the length of the platen.6. The system of claim 5 , wherein the energy source is configured to generate a beam that scans in both length and width directions across the outermost layer of feed material.7. The system of ...

Подробнее
Номер записи: 73
19-01-2017 дата публикации

BRACE STRUCTURES FOR ADDITIVE MANUFACTURING

Номер: US20170014907A1
Автор: Frey Bernard, Joshi Ajey M., Krishnan Kasiraman, Kumar Ashavani, Ng Eric, Ng Hou T., Patibandla Nag B., Swaminathan Bharath
Принадлежит: Applied Materials, Inc.

Additive manufacturing of an object includes dispensing a plurality of successive layers of powder over a top surface of a platform, fusing an object region in each of the plurality of successive layers to form the object, and fusing a brace region in a particular layer from the plurality of layers to form a brace structure to inhibit lateral motion of the powder. The brace structure is spaced apart from the particular object region by a gap of unfused powder. 1. A method for forming an object , the method comprising:dispensing a plurality of successive layers of powder over a top surface of a platform;fusing an object region in each of the plurality of successive layers to form the object; andfusing a brace region in a particular layer from the plurality of layers to form a brace structure to inhibit lateral motion of the powder, wherein the brace region is spaced apart from the particular object region by a gap of unfused powder, and wherein the brace structure of the particular layer comprises a plurality of strands extending toward an outer perimeter of the particular layer.2. The method of claim 1 , wherein the brace region of the particular layer extends from sufficiently near the particular object region to inhibit relative motion between the object and the unfused powder.3. The method of claim 1 , wherein forming the plurality of strands comprises fusing a mesh region of the particular layer claim 1 , the mesh defining a plurality of separated cells of unfused powder in the particular layer.4. The method of claim 3 , wherein the plurality of separated cells form a checkerboard pattern claim 3 , a radial web pattern or a rectangular pattern.5. The method of claim 1 , wherein:the particular layer is a first particular layer of the plurality of successive layers, andthe method further comprises fusing a brace region in a second particular layer of the plurality of successive layers, the brace region of the second particular layer separated from a particular ...

Подробнее
Номер записи: 74
19-01-2017 дата публикации

SELECTIVE MATERIAL DISPENSING IN ADDITIVE MANUFACTURING

Номер: US20170014910A1
Автор: Frey Bernard, Joshi Ajey M., Krishnan Kasiraman, Kumar Ashavani, Ng Eric, Ng Hou T., Patibandla Nag B., Swaminathan Bharath
Принадлежит: Applied Materials, Inc.

Additive manufacturing includes successively forming a plurality of layers on a support. Depositing a layer from the plurality of layers includes dispensing first particles, selectively dispensing second particles in selected regions corresponding to a surface of the object, and fusing at least a portion of the layer. The layer has the first particles throughout and the second particles in the selected regions. Alternatively or in addition, forming the plurality of layers includes depositing multiple groups of layers. Depositing a group of layers includes, for each layer in the group of layers dispensing a feed material to provide the layer, and after dispensing the feed material and before dispensing a subsequent layer fusing a selected portion of the layer. After all layers in the group of layers are dispensed, a volume of the group of layers that extends through all the layers in the group of layers is fused. 1. A method of additive manufacturing of an object , comprising: dispensing first particles on a support or an underlying layer, the first particles having a first mean diameter;', 'selectively dispensing second particles on the support or the underlying layer in selected regions corresponding to an exterior surface of the object, such that the layer has the first particles throughout and the second particles in the selected regions, the second particles having a second mean diameter at least two times smaller than the first mean diameter; and', 'fusing at least a portion of the layer., 'successively forming a plurality of layers on a support, wherein depositing a layer from the plurality of layers comprises'}2. The method of claim 1 , comprising dispensing the second particles after dispensing the first particles so that the second particles infiltrate into a layer of first particles.3. The method of claim 2 , wherein dispensing the first particles comprises pushing the first particles from a reservoir across the support or underlying layer.4. The method of ...

Подробнее
Номер записи: 75
19-01-2017 дата публикации

FUSING OF MULTIPLE LAYERS IN ADDITIVE MANUFACTURING

Номер: US20170014911A1
Автор: Frey Bernard, Joshi Ajey M., Krishnan Kasiraman, Kumar Ashavani, Ng Eric, Ng Hou T., Patibandla Nag B., Swaminathan Bharath
Принадлежит:

Additive manufacturing includes successively forming a plurality of layers on a support. Depositing a layer from the plurality of layers includes dispensing first particles, selectively dispensing second particles in selected regions corresponding to a surface of the object, and fusing at least a portion of the layer. The layer has the first particles throughout and the second particles in the selected regions. Alternatively or in addition, forming the plurality of layers includes depositing multiple groups of layers. Depositing a group of layers includes, for each layer in the group of layers dispensing a feed material to provide the layer, and after dispensing the feed material and before dispensing a subsequent layer fusing a selected portion of the layer. After all layers in the group of layers are dispensed, a volume of the group of layers that extends through all the layers in the group of layers is fused. 1. A method of additive manufacturing of an object , comprising: for each layer in the group of layers, dispensing a feed material on a support or an underlying layer to provide the layer;', 'for each layer in the group of layers, after dispensing the feed material to provide the layer and before dispensing a subsequent layer, fusing a selected portion of the layer corresponding to the object; and', 'after all layers in the group of layers are dispensed, fusing a volume of the group of layers that extends through all the layers in the group of layers., 'successively forming a plurality of a layers on a support, wherein forming the plurality of layers includes depositing multiple groups of layers, each group of layers including multiple layers, and depositing a group of layers from the plurality of layers includes'}2. The method of claim 1 , wherein the portion of the layer corresponds to an exterior surface of the object.3. The method of claim 1 , wherein regions of at least two adjacent layers in the group of layers have perimeters that are laterally offset ...

Подробнее
Номер записи: 76
15-01-2015 дата публикации

Electrophotography-based additive manufacturing system with reciprocating operation

Номер: US20150016841A1
Автор: J. Randolph Sanders, Michael W. Bacus, Steven A. Chillscyzn, William J. Hanson
Принадлежит: Stratasys Inc

An additive manufacturing system for printing a three-dimensional part using electrophotography, the additive manufacturing system comprising a rotatable photoconductor component, first and second development stations configured to develop layers of materials on a surface of the rotatable photoconductor component while the rotatable photoconductor component rotates in opposing rotational directions, and a platen configured to operably receive the developed layers in a layer-by-layer manner to print the three-dimensional part from at least a portion of the received layers.

Подробнее
Номер записи: 77
19-01-2017 дата публикации

Apparatus and method for assembling output of 3d printer

Номер: US20170015062A1
Автор: Chang-Joon Park, Chang-Woo Chu, Jin-Sung Choi, Kap-Kee KIM
Принадлежит: Electronics and Telecommunications Research Institute ETRI

An apparatus and method for assembling 3D printing outputs. The apparatus for assembling 3D printing outputs includes a mesh structuring unit for performing mesh structuring on a segmented surface generated by partitioning a virtual 3D modeled object, a printing unit for selecting the kind and shape of a coupler to be inserted into the segmented surface of the object, modeling a hole in the segmented surface using variables corresponding to the size of the coupler, and printing the partitioned objects, and an assembly unit for inserting the coupler into the hole and assembling the partitioned objects using the coupler.

Подробнее
Номер записи: 78
19-01-2017 дата публикации

ADDITIVE MANUFACTURING SYSTEM AND METHOD FOR PERFORMING ADDITIVE MANUFACTURING ON THERMOPLASTIC SHEETS

Номер: US20170015066A1
Автор: Born Johannes, Fette Marc, Herrmann Axel
Принадлежит:

An additive manufacturing (AM) system including a platform including a mold die mounted on the platform, the mold die having a surface shape corresponding to a mold cavity used for thermoforming a thermoplastic sheet, and an AM assembly configured to perform an AM method on the thermoplastic sheet having been thermoformed with the mold die. A method for performing AM on a thermoplastic sheet comprises the steps of thermoforming a thermoplastic sheet using a mold die, and performing an AM method on the thermoformed thermoplastic sheet in the mold die as a substrate. 1. An additive manufacturing (AM) system , comprising:a platform including a mold die mounted on the platform, the mold die having a surface shape corresponding to a mold cavity used for thermoforming a thermoplastic sheet; andan AM assembly configured to perform an AM method on the thermoplastic sheet having been thermoformed with the mold die.2. The AM system according to claim 1 , wherein the AM method comprises fused deposition modelling selective laser melting or selective laser sintering.3. The AM system according to claim 1 , wherein the thermoplastic sheet comprises an organosheet.4. The AM system according to claim 1 , wherein the AM assembly comprises an extrusion assembly configured to build up a functional structure on top of the thermoformed thermoplastic sheet by fused deposition modelling5. The AM system according to claim 1 , wherein the AM assembly comprises:at least one laser configured to emit a laser beam; andat least one optical redirection device configured to selective redirect the laser beam to predetermined regions on the thermoformed thermoplastic sheet.6. The AM system according to claim 5 , wherein the AM assembly comprises:at least two lasers configured to each emit a laser beam; andat least two optical redirection devices configured to selective redirect the laser beams to predetermined regions on the thermoformed thermoplastic sheet, wherein the accessible range of angles of ...

Подробнее
Номер записи: 79
03-02-2022 дата публикации

Methods for manufacturing wind turbine tower structure using materials with different cure rates

Номер: US20220034303A1
Автор: Daniel Jason Erno, Gregory Edward Cooper, James Robert Tobin, Norman Arnold Turnquist, Vitali Victor Lissianski
Принадлежит: General Electric Co

A method for manufacturing a tower structure of a wind turbine includes additively printing at least a portion of a frame shape of the tower structure of the wind turbine of a first material on a foundation of the tower structure. Further, the first material has a first cure rate. The method also includes allowing the portion of the frame shape to at least partially solidify. The method includes providing a second material around and/or within the portion of the frame shape such that the portion of the frame shape provides support for the second material. The second material includes a cementitious material having a second cure rate that is slower than the first cure rate, with the different cure rates reducing the net printing time for the overall structure. Moreover, the method includes allowing the second material to at least partially solidify so as to form the tower structure.

Подробнее
Номер записи: 80
18-01-2018 дата публикации

DIMENSIONAL ACCURACY IN GENERATING 3D OBJECTS

Номер: US20180015655A1
Автор: Bennett Teddy Leland, Gheorghescu Gheorghe Marius, Socha-Leialoha John
Принадлежит:

Methods, systems, and devices are described herein for improving dimensional accuracy in generating a three dimensional (3D) object. In one aspect, first data may be received, for example from a first sensor, with the first data corresponding to at least a first dimension or measurement of a filament extrudable by a 3D printer. Similarly, second data may be received, for example from a second sensor, with the second data corresponding to at least a second dimension of the filament extrudable by the 3D printer. Based on the first and the second data, an amount of filament provided to a hotend of the 3D printer may be determined. During generation of the 3D object, a speed at which the filament is provided to the hotend may be adjusted based on the determined amount of filament provided to the hotend to more accurately generate the 3D object. 1. A three-dimensional (3D) printing system comprising:an extruder assembly comprising a hot-end;a processor communicatively coupled to the extruder assembly; and receive first data, the first data corresponding to at least a first dimension of a filament extrudable by the 3D printing system;', 'receive second data, the second data corresponding to at least a second dimension of the filament extrudable by the 3D printing system;', 'determine an amount of the filament provided to the hot-end based on at least the first data and the second data; and', 'adjusting a speed at which the filament is provided to the hot-end based on the determined amount of the filament provided to the hot-end to generate the 3D object.', 'generate a 3D object, wherein generating the 3D object further comprises], 'a memory communicatively coupled to the processor, storing instructions that when executed by the processor, cause the 3D printing system to perform the following operations2. The 3D printing system of claim 1 , further comprising a first sensor and a second sensor claim 1 , wherein the first data is received from the first sensor and the ...

Подробнее
Номер записи: 81
18-01-2018 дата публикации

BUILD PLATES FOR CONTINUOUS LIQUID INTERFACE PRINTING HAVING PERMEABLE BASE AND ADHESIVE FOR INCREASING PERMEABILITY AND RELATED METHODS, SYSTEMS AND DEVICES

Номер: US20180015669A1
Автор: Ermoshkin Alexander, Herrmann Ariel M., Moore David, Rolland Jason P., Samulski Edward T., Tumbleston John R.
Принадлежит:

A build plate for a three-dimensional printer includes a rigid, optically transparent, gas-permeable planar base having an upper surface and an opposing lower surface; a gas permeable adhesive layer on the base upper surface; and a flexible, optically transparent, gas-permeable sheet having upper and lower surfaces, the upper surface comprising a build surface for forming a three-dimensional object, the sheet lower surface positioned on the adhesive layer opposite the base. 1. A build plate for a three-dimensional printer comprising:a rigid, optically transparent, gas-permeable planar base having an upper surface and an opposing lower surface;a gas permeable adhesive layer on the base upper surface; anda flexible, optically transparent, gas-permeable sheet having upper and lower surfaces, the upper sheet surface comprising a build surface for forming a three-dimensional object, the sheet lower surface positioned on the adhesive layer opposite the base.2. The build plate of claim 1 , wherein the planar base comprises laser-cut porous glass.3. The build plate of claim 1 , wherein the planar base comprises fused fiber optic tubes.4. The build plate of claim 1 , wherein the planar base comprises a matrix of etchable and non-etchable materials claim 1 , wherein the etchable materials are at least partially removed to form apertures therein.5. The build plate of any preceding claim claim 1 , wherein the planar base comprises a gas-impermeable portion and a gas-permeable portion claim 1 , the upper surface being on the gas-permeable portion.6. The build plate of claim 5 , wherein the gas-permeable portion comprises laser-cut porous material or fused fiber optic tubes.7. The build plate of claim 3 , wherein the fused fiber optic tubes comprise glass or polymer tubes.8. The build plate of claim 1 , wherein the adhesive layer comprises a poly(dimethylsiloxane) (PDMS) film.9. The build plate of claim 3 , wherein the fused fiber optic tubes are arranged perpendicular to the gas ...

Подробнее
Номер записи: 82
18-01-2018 дата публикации

Multi-beam resin curing system and method for whole-volume additive manufacturing

Номер: US20180015672A1
Автор: Allison E. Browar, Brett Kelly, Christopher M. Spadaccini, Johannes HENRIKSSON, Maxim Shusteff, Nicholas Fang, Robert Matthew Panas
Принадлежит: Lawrence Livermore National Security LLC

A multi-beam volumetric resin curing system and method for whole-volume additive manufacturing of an object includes a bath containing a photosensitive resin, a light source for producing a light beam, and a spatial light modulator which produces a phase- or intensity-modulated light beam by impressing a phase profile or intensity profile of an image onto a light beam received from the light source. The system and method also include projection optics which then produces multiple sub-image beams from the modulated light beam which are projected to intersect each other in the photosensitive resin to cure select volumetric regions of the resin in a whole-volume three-dimensional pattern representing the object.

Подробнее
Номер записи: 83
16-01-2020 дата публикации

FOOD PRODUCT PRINTER SYSTEM

Номер: US20200015509A1
Автор: Weinstein Evan
Принадлежит:

A food product printer system is provided. The food product printer system includes a cartridge configured to receive a food product, and a heating chamber including an opening for placement of the cartridge at least partially therein. The heating chamber is configured to heat the food product to a predetermined temperature for extrusion of the food product from the heating chamber in melted form. 1. A food product printer system , comprising:a cartridge configured to receive a food product; anda heating chamber including an opening for placement of the cartridge at least partially therein, the heating chamber configured to heat the food product to a predetermined temperature for extrusion of the food product from the heating chamber in melted form.2. The food product printer system of claim 1 , comprising an elongated heating element concentrically wound around and disposed against an outer surface of the heating chamber.3. The food product printer system of claim 1 , comprising one or more heating elements positioned against an outer surface of the heating chamber.4. The food product printer system of claim 1 , wherein the predetermined temperature is a range from about 30° C. to about 32° C.5. The food product printer system of claim 1 , comprising a connector disposed within a distal end of the cartridge claim 1 , the connector including a flange capable of interlocking with a corresponding opening in the heating chamber to maintain a position of the cartridge within the heating chamber.6. The food product printer system of claim 1 , wherein the food product is extruded from the heating chamber by pressurized air introduced into the cartridge claim 1 , the pressurized air imparting a force directly on the food product to extrude the food product.7. The food product printer system of claim 1 , comprising a plunger slidably disposed within the cartridge.8. The food product printer system of claim 7 , wherein the food product is extruded from the heating chamber by ...

Подробнее
Номер записи: 84
17-01-2019 дата публикации

MAGNETICALLY THROTTLED LIQUEFIER ASSEMBLY

Номер: US20190015884A1
Автор: Batchelder J. Samuel, Zinniel Robert L.
Принадлежит:

A magnetically throttled liquefier assembly for use in an additive manufacturing system and configured to heat a metal-based alloy to an extrudable state includes an array of magnets to generate a magnetic field in order to induce a viscosity in the heated metal-based alloy and to control the flow rate of the heated metal-based alloy through the liquefier for extrusion and the building of a three-dimensional object with the metal-based alloy. 1. A liquefier assembly for use in an additive manufacturing system to print three-dimensional parts , the liquefier assembly comprising:a liquefier tube extending through a liquefier and configured to receive and heat a feedstock of a metal-based alloy to an elevated temperature;at least one magnet positioned in the liquefier assembly and configured to produce a magnetic field in the liquefier assembly;a flow channel in fluid communication with the liquefier tube and an extrusion tip and positioned within the magnetic field generated by the at least one magnet and configured to magnetically induce an increased viscosity in the heated metal-based alloy flowing therethrough; andwherein the extrusion tip is configured to receive and deposit the heated metal-based alloy having the magnetically induced viscosity.2. The liquefier assembly of claim 1 , wherein the at least one magnet comprises an array of magnets positioned along a length of the flow channel assembly wherein the magnets are arranged to provide magnetic fields in alternating orientations.3. The liquefier assembly of claim 2 , wherein the array of magnets is oriented to produce magnetic fields in a direction substantially perpendicular to a flow direction of the heated metal-based alloy in the flow channel.4. The liquefier assembly of claim 1 , and further comprising a current source configured to pass an electrical current through the flow channel assembly to the heated metal-based alloy in the flow channel.5. The liquefier assembly of claim 4 , wherein the current ...

Подробнее
Номер записи: 85
17-01-2019 дата публикации

THREE DIMENSIONAL PRINTING DEVICE

Номер: US20190016046A1
Автор: Liu Tsung-Yu
Принадлежит:

A three dimensional printing device includes a plane putting a photocured material. A pusher mechanism has a contact end above the plane, wherein the contact end is used to contact and remove a portion of the photocured material. The remnant thickness of the removed photocured material is larger than the thickness of a layer of cured pattern. 1. A three dimensional printing device , comprising:a plane putting a photocured material; anda pusher mechanism having a contact end above the plane, wherein the contact end is used to contact and remove a portion of the photocured material, and wherein the remnant thickness of the removed photocured material is larger than the thickness of a layer of cured pattern.2. The three dimensional printing device according to claim 1 , further comprising a driving mechanism configured to drive the pusher mechanism to move above the plane.3. The three dimensional printing device according to claim 2 , wherein the driving mechanism further comprises a power source and a driving assembly connected to the power source.4. The three dimensional printing device according to claim 1 , wherein the pusher mechanism is a scraper or a roller.5. The three dimensional printing device according to claim 1 , further comprising:a projector configured to emit light for curing the photocured material; anda printing platform having a lower surface contacting and being immersed into the photocured material.6. A three dimensional printing device claim 1 , comprising:a plane putting a photocured material; anda supplying mechanism disposed above the plane, wherein the supplying mechanism is used to supply the photocured material to the plane, and wherein a thickness of the photocured material above the plane is less than 1 mm.7. The three dimensional printing device according to claim 6 , further comprising a driving mechanism configured to drive the supplying mechanism to move above the plane.8. The three dimensional printing device according to claim 7 , ...

Подробнее
Номер записи: 86
17-01-2019 дата публикации

METHOD FOR PRODUCING A THREE-DIMENSIONAL BODY

Номер: US20190016050A1
Автор: STADLMANN Klaus
Принадлежит:

A method produces a three-dimensional body () in a stereolithographic process. According to the method, a photosensitive material () is cured by radiation, measuring radiation is coupled into a reference layer () and, as a result of internal reflection, remains predominantly within the reference layer (), and the measuring radiation is detected space-resolved and time-resolved by a sensor (). 1. A method for producing a three-dimensional body in a stereolithographic process , comprising:curing a photosensitive material by radiation,coupling measuring radiation into a reference layer and, as a result of internal reflection, remains predominantly within the reference layer,wherein the measuring radiation is detected space-resolved and time-resolved by a sensor.2. The method according to claim 1 , wherein by deforming of the reference layer the internal reflection is disturbed claim 1 , wherein measuring radiation emerges from the reference layer.3. The method according to claim 1 , wherein the sensor detects the emerging measuring radiation simultaneously in a plurality of measuring areas.4. The method according to claim 1 , wherein the reference layer is flexible and at least partially transparent for the measuring radiation.5. The method according to claim 1 , wherein the reference layer consists of silicone.6. The method according to claim 1 , wherein total reflection occurs within the reference layer.7. The method according to claim 1 , wherein infrared radiation is used as the measuring radiation.8. The method according to claim 1 , wherein a camera claim 1 , is used as a sensor.9. The method according to claim 1 , wherein an IR detector which detects polymerization heat arising in the stereolithographic process is used as a sensor.10. The method according to claim 9 , wherein a conclusion about the process status is drawn based on polymerization heat.11. The method according to claim 1 , wherein the sensor detects the entire reference layer.12. The method ...

Подробнее
Номер записи: 87
17-01-2019 дата публикации

STEREOLITHOGRAPHY SYSTEM

Номер: US20190016109A1
Автор: CASTANON Diego
Принадлежит:

A stereolithography system comprises an emitting device and a tank disposed above the emitting device. The tank has a first optically transparent bottom wall and a second optically transparent bottom wall with a space disposed therebetween. There is a linear stage that extends away from the tank and a carrier platform is moveable along the linear stage away from the tank. There is also a wettable material at a bottom wall of the tank within the tank. A fluid cooling system is in fluid communication the space disposed between the first optically transparent bottom wall of the tank and the second optically transparent bottom wall of the tank. 118-. (canceled)19. A stereolithography system comprising:an emitting device;a tank disposed above the emitting device, the tank having an optically transparent bottom wall and the tank being filled with resin;a linear stage extending away from the tank and a carrier platform moveable along the linear stage away from the tank; anda wettable material overlaying the optically transparent bottom wall of the tank within the tank, the wettable material retaining water and water being on a surface of the wettable material.20. The stereolithography system as claimed in wherein the wettable material is coated on the optically transparent bottom wall of the tank.21. The stereolithography system as claimed in wherein the wettable material is a membrane that overlays the optically transparent bottom wall of the tank.22. The stereolithography system as claimed in wherein the wettable material is adhered to the optically transparent bottom wall of the tank using adhesive applied in a pattern having intersecting lines.23. The stereolithography system as claimed in wherein a nanostructure of the surface of the wettable material is a vertically aligned surface or a hierarchically structured surface claim 19 , or a combination thereof.24. The stereolithography system as claimed in wherein a nanostructure of the surface of the wettable material ...

Подробнее
Номер записи: 88
19-01-2017 дата публикации

OPTICAL MANUFACTURING PROCESS SENSING AND STATUS INDICATION SYSTEM

Номер: US20170016781A1
Автор: Castro Alberto, Cola Mark J., Dave Vivek R., Madigan Bruce, Piltch Martin S.
Принадлежит:

An optical manufacturing process sensing and status indication system is taught that is able to utilize optical emissions from a manufacturing process to infer the state of the process. In one case, it is able to use these optical emissions to distinguish thermal phenomena on two timescales and to perform feature extraction and classification so that nominal process conditions may be uniquely distinguished from off-nominal process conditions at a given instant in time or over a sequential series of instants in time occurring over the duration of the manufacturing process. In other case, it is able to utilize these optical emissions to derive corresponding spectra and identify features within those spectra so that nominal process conditions may be uniquely distinguished from off-nominal process conditions at a given instant in time or over a sequential series of instants in time occurring over the duration of the manufacturing process. 1. A manufacturing process sensing and status indication system comprising:(a) one or more optical sensors configured to measure the optical emissions from the manufacturing process over a range of wavelengths from 200 nanometers to 1000 nanometers, and produce time-domain optical data;(b) one or more thermal sensors configured to measure thermal phenomena at two different characteristic timescales, a first timescale associated with the application of heat into the manufacturing process by an external heat source and a second timescale associated with the material response to the application of heat within the manufacturing process by the external heat source, and produce time-domain thermal data;(c) an analysis system configured to provide(c1) a first feature extraction process that extracts, from the time domain optical and thermal data, features that are related to the heating rate, cooling rate and peak temperature of the thermal cycles associated with the application of heat into the manufacturing process by an external heat ...

Подробнее
Номер записи: 89
16-01-2020 дата публикации

ADDITIVE MANUFACTURING METHOD

Номер: US20200016825A1
Автор: LIN Pai-Chen
Принадлежит:

An additive manufacturing method includes: providing a metal substrate; pressing a plurality of first metal parts to weld the same on the metal substrate one by one using a welding unit through friction welding so as to form a first stacked layer laminated on the metal substrate; pressing a plurality of second metal parts to weld the same on the first stacked layer one by one using the welding unit through friction welding so as to form a second stacked layer laminated on the first stacked layer; and repeating formation of the second stacked layer until a required amount of the second stacked layers are additively laminated on the first stacked layer to obtain a final three-dimensional (3D) article. 1. An additive manufacturing method , comprising:(a) providing a metal substrate for disposing a plurality of first metal parts;(b) disposing one of the first metal parts on the metal substrate using a feeding unit movable relative to the metal substrate;(c) pressing the one of the first metal parts using a welding unit that has a longitudinal axis and rotates about the longitudinal axis to make a pushing surface of the welding unit abut against a pressured surface of the one of the first metal parts opposite to the metal substrate and the one of the first metal parts be welded on the metal substrate through plastic deformation of a first joint zone between the metal substrate and the one of the first metal parts which results from heat generated by friction between the pressured surface of the one of the first metal parts and the pushing surface of the welding unit;(d) repeating Steps (b) and (c) until a remainder of the first metal parts are welded on the metal substrate to form a first stacked layer laminated on the metal substrate;(e) disposing one of second metal parts on the first stacked layer using the feeding unit;(f) pressing the one of the second metal parts using the welding unit rotating about the longitudinal axis to make the pushing surface of the welding ...

Подробнее
Номер записи: 90
21-01-2021 дата публикации

HIGH-THROUGHPUT 3D PRINTING OF CUSTOMIZED ASPHERIC IMAGING LENSES

Номер: US20210016496A1
Автор: CHEN Xiangfan, Liu Wenzhong, Sun Cheng, Zhang Hao F.
Принадлежит: Northwestern University

In an aspect, a method for additive manufacture of a three-dimensional object based on a computational model comprises steps of: grayscale photohardening a precursor material to form a portion of the object; and applying a hardened meniscus coating at a feature of the object; wherein the three-dimensional object is formed via at least the combination of the steps of gray scale photohardening and applying the meniscus coating. In some embodiments, the grayscale photohardening step is a grayscale photopolymerization step. In some embodiments, the applying a hardened meniscus coating step is a meniscus equilibrium post-curing step. 1. A method for additive manufacture of a three-dimensional object based on a computational model , the method comprising steps of:grayscale photohardening a precursor material to form a portion of the object; andapplying a hardened meniscus coating at a feature of the object;wherein the three-dimensional object is formed via at least the combination of the steps of grayscale photohardening and applying the meniscus coating.2. The method of claim 1 , wherein the step of grayscale photohardening comprises modifying light via a dynamic photomask and exposing the precursor material to the modified light.3. The method of any of - claim 1 , wherein the step of grayscale photohardening comprises photopolymerizing the precursor material.4. The method of any claim 3 , wherein the precursor material is a prepolymer.5. The method of any of - claim 3 , wherein the dynamic photomask comprises a device selected from the group consisting of a spatial light modulator (SLM) claim 3 , a projection unit based on digital light processing or DLP® claim 3 , a digital micromirror device or a DMD® claim 3 , a liquid crystal display (LCD) claim 3 , an image light amplification device or an ILA® claim 3 , a liquid crystal on silicon (LCOS) device claim 3 , a silicon X-tal reflective display (SXRD) claim 3 , a microelectromechanical system (MEMS) claim 3 , a ...

Подробнее
Номер записи: 91
21-01-2021 дата публикации

Lamination molding apparatus

Номер: US20210016502A1
Автор: Shuichi Kawada, Tsuyoshi Saito
Принадлежит: Sodick Co Ltd

A lamination molding apparatus capable of stably supplying material powder on a molding table. Provided is a lamination molding apparatus including a chamber, a recoater head, and a recoater head driving mechanism. The chamber covers a molding region. The recoater head comprises a material case and is configured to be moved so as to form a material powder layer. The material case includes a case outlet for discharging the material powder and a pair of inclined side surfaces arranged with the case outlet interposed therebetween. The inclined side surfaces are inclined toward the case outlet so that inclination angles between a horizontal plane and the inclined side surfaces are different from each other. The recoater head driving mechanism includes a motor and a control unit, and the control unit is configured to vibrate the recoater head to facilitate discharge of the material powder.

Подробнее
Номер записи: 92
16-01-2020 дата публикации

THREE-DIMENSIONAL FORMING APPARATUS AND METHOD OF FORMING THREE-DIMENSIONAL OBJECT

Номер: US20200016833A1
Автор: NAKAMURA Kazuhide, Saito Koichi, YUWAKI Kohei
Принадлежит:

A three-dimensional forming apparatus includes: a material melting portion that melts a material and obtains a forming material; a supply flow path through which the forming material supplied from the material melting portion is distributed; a first branched flow path and a second branched flow path to which the forming material is supplied from the supply flow path; a coupling portion that couples the supply flow path to a first branched flow path and a second branched flow path; a first nozzle that communicates with the first branched flow path; a second nozzle that communicates with the second branched flow path and that has a larger nozzle diameter than a nozzle diameter of the first nozzle; and a valve mechanism that is provided at the coupling portion. 1. A three-dimensional forming apparatus comprising:a material melting portion that melts a material and obtains a forming material;a supply flow path through which the forming material supplied from the material melting portion is distributed;a first branched flow path and a second branched flow path to which the forming material is supplied from the supply flow path;a coupling portion that couples the supply flow path to the first branched flow path and the second branched flow path;a first nozzle that communicates with the first branched flow path;a second nozzle that communicates with the second branched flow path and has a larger nozzle diameter than a nozzle diameter of the first nozzle; anda valve mechanism that is provided at the coupling portion, wherein a first state in which communication between the supply flow path and the first branched flow path is established and communication between the supply flow path and the second branched flow path is disconnected, and', 'a second state in which the communication between the supply flow path and the second branched flow path is established and the communication between the supply flow path and the first branched flow path is disconnected., 'the valve ...

Подробнее
Номер записи: 93
16-01-2020 дата публикации

SYSTEMS AND METHODS FOR ADDITIVELY MANUFACTURING COMPOSITE PARTS

Номер: US20200016882A1
Автор: Evans Nick Shadbeh, Kozar Michael Patrick, Wilenski Mark Stewart
Принадлежит:

Systems and methods for additively manufacturing composite parts are disclosed. Methods comprise combining a plurality of pre-consolidated tows to define a macro tow and dispensing the macro tow in three dimensions to define the composite part. Each pre-consolidated tow comprises a fiber tow within a non-liquid binding matrix. The combining comprises actively altering a shape and/or size of a cross-sectional profile of the macro tow along a length of the macro tow as it is being defined. 1. A method of additively manufacturing a composite part , the method comprising:combining a plurality of pre-consolidated tows to define a macro tow, wherein each pre-consolidated tow comprises a fiber tow within a non-liquid binding matrix, wherein the combining comprises actively altering a shape or a size of a cross-sectional profile of the macro tow along a length of the macro tow as it is being defined; anddispensing the macro tow in three dimensions to define the composite part.2. The method of claim 1 , wherein the non-liquid binding matrix is self-adherent claim 1 , such that the combining comprises adhering together the plurality of pre-consolidated tows.3. The method of claim 1 , wherein the combining comprises combining the plurality of pre-consolidated tows with one or more elongate structures claim 1 , wherein each elongate structure comprises one or more of an optical fiber claim 1 , a wire claim 1 , a metal wire claim 1 , a conductive wire claim 1 , a wire bundle claim 1 , a sensor claim 1 , circuitry claim 1 , a hollow tube claim 1 , a foam claim 1 , and a magnetic material.4. The method of claim 1 , wherein the combining comprises feeding the plurality of pre-consolidated tows into a corresponding plurality of inlets.5. The method of claim 4 , wherein the inlets converge to a single outlet claim 4 , wherein the dispensing comprises dispensing the macro tow from the single outlet.6. The method of claim 4 , wherein the inlets are arranged in an array configured to ...

Подробнее
Номер записи: 94
28-01-2016 дата публикации

System and method for additive manufacturing of a three-dimensional object

Номер: US20160023311A1
Автор: Ray Arbesman
Принадлежит: RA Investment Management Sarl

A method for additive manufacturing of a three-dimensional object includes: a) identifying a set of sequentially extending planar cross-sectional shapes of the three-dimensional object; b) cutting a metal sheet into a plurality of planar metal pieces, each metal piece cut to a metal piece shape corresponding to a respective one of the cross-sectional shapes, wherein the metal sheet has a first face with a first plurality of barbs extending therefrom, and an opposed second face with a second plurality of barbs extending therefrom; c) cutting a substrate sheet into a plurality of planar substrate pieces, each substrate sheet cut to a substrate piece shape corresponding to a respective one of the cross-sectional shapes; and d) positioning the metal pieces and the substrate pieces in facing relation in an alternating pattern and in sequential order, and pressing the metal pieces and substrate pieces together to force the barbs to penetrate the substrate pieces.

Подробнее
Номер записи: 95
26-01-2017 дата публикации

ADDITIVE MANUFACTURING WITH PRE-HEATING

Номер: US20170021418A1
Автор: Frey Bernard, Joshi Ajey M., Krishnan Kasiraman, Kumar Ashavani, Ng Eric, Ng Hou T., Patibandla Nag B., Swaminathan Bharath
Принадлежит:

An additive manufacturing system includes a platen having a top surface to support an object being manufactured, a dispenser to deliver a plurality of successive layers of feed material over the platen, an energy source positioned above the platen to direct a beam to fuse at least some of an outermost layer of feed material, and a plurality of lamps disposed above the platen and around the energy source to radiatively heat the outermost layer of feed material. 1. An additive manufacturing system , comprising:a platen having a top surface to support an object being manufactured;a dispenser to deliver a plurality of successive layers of feed material over the platen;a first heater configured to heat the feed material to a first temperature that is below a temperature at which the powder becomes tacky before the feed material is dispensed by the dispenser; andan energy source to fuse at least some of an outermost layer of feed material over the platen.2. The system of claim 1 , wherein the dispenser comprises a reservoir adjacent the platen.3. The system of claim 2 , wherein the first heater comprises a heat lamp positioned above the reservoir.4. The system of claim 2 , wherein the first heater comprises a resistive heater embedded in a support plate or a side wall of the reservoir.5. The system of claim 2 , wherein the first heater is configured to heat the feed material in the dispenser without applying heat to the layer of feed material dispensed over the platen.6. The system of claim 2 , wherein the dispenser comprises two reservoirs positioned on opposite sides of the platen.7. The system of claim 1 , comprising a second heater configured to heat substantially all of the outermost layer to a caking temperature.8. The system of claim 7 , wherein the second heater comprises a plurality of heat lamps positioned around the energy source.9. The system of claim 7 , wherein the second heater comprises a resistive heater embedded in a side wall surrounding the platen.10. ...

Подробнее
Номер записи: 96
26-01-2017 дата публикации

ADDITIVE MANUFACTURING WITH MULTIPLE HEAT SOURCES

Номер: US20170021419A1
Автор: Frey Bernard, Joshi Ajey M., Krishnan Kasiraman, Kumar Ashavani, Ng Eric, Ng Hou T., Patibandla Nag B., Swaminathan Bharath
Принадлежит:

An additive manufacturing system includes a platen having a top surface to support an object being manufactured, a dispenser to deliver a plurality of successive layers of feed material over the platen, an energy source positioned above the platen to direct a beam to fuse at least some of an outermost layer of feed material, and a plurality of lamps disposed above the platen and around the energy source to radiatively heat the outermost layer of feed material. 1. An additive manufacturing system , comprising:a platen having a top surface to support an object being manufactured;a dispenser to deliver a plurality of successive layers of feed material over the platen;an energy source positioned above the platen to direct a beam to fuse at least some of an outermost layer of feed material; anda plurality of lamps disposed above the platen and around the energy source to radiatively heat the outermost layer of feed material.2. The system of claim 1 , wherein the energy source comprises a laser or an ion source.3. The system of claim 1 , wherein the plurality of lamps are held on a rotatable support.4. The system of claim 3 , wherein the plurality of lamps are positioned equidistant from an axis of rotation of the platen.5. The system of claim 4 , wherein the plurality of lamps are positioned at equal angular intervals around the axis of rotation of the platen.6. The system of claim 1 , wherein the plurality of lamps are positioned equidistant from a center axis through the platen.7. The system of claim 6 , wherein the plurality of lamps are positioned at equal angular intervals around the center axis.8. The system of claim 1 , comprising a heater to heat the feed material prior to depositing the layer of feed material.9. The system of claim 8 , wherein the feed material comprises a powder claim 8 , and the heater is configured to raise the feed material to first temperature that is above room temperature but below a temperature at which the powder becomes tacky.10. The ...

Подробнее
Номер записи: 97
26-01-2017 дата публикации

MATERIAL FEEDER OF ADDITIVE MANUFACTURING APPARATUS, ADDITIVE MANUFACTURING APPARATUS, AND ADDITIVE MANUFACTURING METHOD

Номер: US20170021452A1
Автор: MACHIDA Morihiro, NAKATA Shinji, Ohno Hiroshi, TANAKA Masayuki
Принадлежит: KABUSHIKI KAISHA TOSHIBA

A material feeder in an additive manufacturing apparatus according to one embodiment includes a feeding unit. The feeding unit includes a container capable of containing a powdery material, a first wall that is provided with a plurality of openings communicated with the container and that at least partially covers a region onto which the material is fed, and an opening-closing part capable of individually opening and closing the openings, the feeding unit forming a layer of the material on at least a part of the region by feeding the material inside the container onto the region from at least one of the openings that is opened by the opening-closing part. 1: A material feeder of an additive manufacturing apparatus , the material feeder comprising:a feeding unit including a container capable of containing powdery material, a first wall that is provided with a plurality of openings configured to be communicated with the container and that is configured to at least partially cover a region onto which the material is fed, and an opening-closing part capable of individually opening and closing the openings, the feeding unit configured to form a layer of the material on at least a part of the region by feeding the material inside the container onto the region from at least one of the openings that is opened by the opening-closing part and by leveling the material.2: The material feeder of an additive manufacturing apparatus according to claim 1 , whereinthe feeding unit includes a plurality of feeding units configured to have, as the material, different kinds of material contained in the respective containers, andthe feeding units are configured to form a layer of the different kinds of material on the region by individually feeding the respective kinds of material onto the region.3: The material feeder of an additive manufacturing apparatus according to claim 1 , whereinthe container includes a first container capable of containing first material that is powdery, and a ...

Подробнее
Номер записи: 98
26-01-2017 дата публикации

PROCESS FOR FORMING A COMPONENT BY MEANS OF ADDITIVE MANUFACTURING, AND POWDER DISPENSING DEVICE FOR CARRYING OUT SUCH A PROCESS

Номер: US20170021456A1
Автор: Varetti Mauro
Принадлежит:

A component is formed by means of additive manufacturing by repeating a series of cycles, where each cycle has a depositing step for forming a powder layer of substantially constant thickness; a pre-heating step, for pre-heating the powder layer; and a melting step, for melting some areas of said powder layer by means of an energy beam so as to form a horizontal section of the component that must be obtained; at the end of all cycles, the top surface of the horizontal section that has been formed is lowered until it reaches a predetermined height; the pre-heating step is performed by moving a heat source above the powder layer at the same time as the depositing step, at least for an initial part of the pre-heating step. 1. A process for forming a component by additive manufacturing , the process comprising the steps of:a) depositing powders having the same composition as said component so as to define a powder layer having a substantially constant thickness;b) pre-heating said powder layer;c) carrying out a melting of some areas of said powder layer by an energy beam so as to form a horizontal section of said component;d) lowering the top surface of the horizontal section formed until it reaches a predetermined height;e) repeating the previous steps until all horizontal sections of said component are formed;wherein the pre-heating step is carried out by moving a heat source above said powder layer at the same time as the depositing step, at least for an initial part of the pre-heating step.2. The process according to claim 1 , wherein the pre-heating step is carried out by induction.3. The process according to claim 1 , wherein the melting step is carried out by moving said energy beam on said powder layer simultaneously to the depositing and pre-heating steps claim 1 , at least for an initial part of the melting step.4. The process according to claim 1 , wherein the depositing and pre-heating steps are carried out by moving a single powder dispensing device along ...

Подробнее
Номер записи: 99
26-01-2017 дата публикации

STEREOLITHOGRAPHY MACHINE FOR PRODUCING A THREE-DIMENSIONAL OBJECT AND STEREOLITHOGRAPY METHOD APPLICABLE TO SAID MACHINE

Номер: US20170021567A1
Автор: Costabeber Ettore Maurizio
Принадлежит:

The invention is a stereolithography machine () comprising: a container () suited to contain a fluid substance () suited to solidify through exposure to predefined radiation (a); means () suited to emit the predefined radiation () and to solidify a layer of the fluid substance () having a predefined thickness and arranged adjacent to the bottom () of the container (); a modelling plate () suited to support the solidified layer (); actuator means () suited to move the modelling plate (5) according to a direction perpendicular to the bottom (a) of the container (); levelling means () arranged in contact with the fluid substance (3), associated with power means suited to move them with respect to the container () so as to redistribute the fluid substance () in the container (). The power means are configured so as to move the container () in each one or the two opposite senses of a direction of movement (Y) and the levelling means () comprise two paddles () that are opposite each other with respect to the modelling plate (). 14-. (canceled)5. A method for producing a three-dimensional object in layers within a stereolithography machine comprising:movably mounting a container containing a fluid substance in a liquid or a paste state that is solidified through exposure to predefined radiation, the container being mounted so that it can be moved in each one of two mutually opposite horizontal directions, the container having a bottom which is transparent to the predefined radiation;a first operation of selectively irradiating a first one of said layers of a fluid substance through the transparent bottom of the container containing the fluid substance in such a way as to obtain a corresponding one of said solidified layers;a second operation of moving said solidified layer away from said bottom to make it emerge from said fluid substance;a third operation of redistributing said fluid substance in said container in such a way as to fill a depression in said fluid substance ...

Подробнее
Номер записи: 100