MECHANISM FOR THE AUTOMATIC CONSTANT OF THE WEIGHT OF PILE PACKINGS.

30-09-1982 дата публикации
Номер:
CH0000632203A5
Контакты:
Номер заявки: 08-00-1978873
Дата заявки: 22-08-1978

[1]

The invention concerns a mechanism for the automatic constant of the weight of pile packings, with balance and at least one apparatus, which form gradual piles from a set of standing promoted, disk-shaped pieces, their length adjustable is supplied and a packaging machine werden.

[2]

With such mechanisms it was so far usual to arrange the balance behind the packaging machine to thus balance the finished packing. E.g. due to uncontrollable changes of the Baekbedingtmgen, e.g. of until cult, changing weight of the packings by a 13berwachungsperson periodically one controls. In the case of deviations between the actual weight and the target weight the pile length is shortened or extended either. This causes a large work expended. If a minimum weight of the packings must be guaranteed is it necessarily to stop the pile length to a SolI Gewic t which exceeds the guaranteed weight off e.g. around 5. Weight errors of the packing material become with this function inadvertently mìtgemessen.

[3]

ù it is task of the invention to train a mechanism of the kind initially specified in such a manner that Gewichtsabweichurtgen in the pile automatically balanced werden.

[4]

This task becomes according to invention by the training of the mechanism after the characteristic of the Anspruehs 1 gelöst.

[5]

During the mechanism according to invention the work expended is completely substantially reduced and a substantially larger Ganauigkeit is obtained, because the pile length is steered by the balance. A Gewichtsänderung of the piles is very rapidly seized, because the piles before the packaging machine are weighed, which is not lost to Verpacktmgszeit thus, and also the promotion of the piles toward the disk plane of the pieces, very rasees spending permits on the balance. The latter becomes in particular by the very favourable training of the conveyances marked in requirement 2 gewährleistet.

[6]

In the design is a remark example of the invention article dargestellt.

[7]

Show:

[8]

Fig. 1 a schematic profile of a mechanism of the weight of packed Biskuitsstapeln in accordance with line II in Fig. 2, Fig. 2 a Grtmdriss of the Fig. 1, Fig. 3 a part of the mechanism in the longitudinal longing CCIT in accordance with line III III in Fig. 4, Fig. 4 a scrap view toward the arrow IV in Fig. 3, Fig. 5 a cut essentially after line V-V in Fig. 3 in larger yardstick, Fig. 6 an opinion of a balance toward the arrow VI of Fig. 7; and Fig. 7 an opinion of a part of the Einxichtung toward the arrow VII of Fig. 2.

[9]

The represented mechanism exhibits a broad conveyor 1, that for promoting five parallel rows 2 of upright one behind the other stacked, disk-shaped until cult 3 serves, which are promoted perpendicularly to its sports club eibenebene. simmer row is on their volume-promote-strain 4 laterally supported by two rack-firm guidance walls 5. The walls begin at the exit of a not represented baking device, in which the Biskuits in well-known way baked and upright on at the beginning of the volume I brought werden.

[10]

Those volume-promote-strains 4 changes into a ramp distance 6, which is likewise by guidance walls 7 set in. The ramp distance 6, which becomes in sections steeper, is gestellfest in the normal enterprise and goes at their terminator point 8 into one swivel-strains 9 over, the guidance walls 10 hat.

[11]

It is planned that in case of of Betriebsstörtmgen a lowest part of the ramp distance 6 particularly not defined in the design can be raised, thus of the baking device Biskuits on the volume, still supplied, 1 to keep running can over without damage suffer collected too werden.

[12]

Transverse to the volume 1 a table 11 extends under the swivelling straining 9. Everyone swivel-strains 9 belonged to a pile education apparatus 12, which is provided with a rigging device 3,632,203 13 for a last detent 14. The last detent 14 stops the foremost Biskuit of the row 2, on which swivel-strain 9 around the point 8 one down-swivels and on the same Biskuitstapel present 15 in the situation the 151 'on the table 11 one puts down. To the apparatus 12 due, as “sword” between the Biskuits the 3, is briefly pushed characteristic separation organ 16 at the swiveling point 8 in order to prevent that during the lagging swivel-strain 9 of Biskuits beyond this point are pushed. The lagging the five swivelling straining 9 takes place with one another during a Arbeitspeñode of the Einrichtung.

[13]

On the table 11 the piles 151 are promoted by driver staffs 17 an exhibiting chain conveyor toward the arrow 18 to a balance 19, on which they are weighed. If the weight of the pile deviates by more than a given amount of tolerance from its nominal amount, the balance an appropriate electrical error signal delivers, which the EinsteUvorrichtung 13 is supplied, to which to that apparatus 12 belongs, to that the weighed pile 151 on the table 11 put hat.

[14]

The weight of the pile 151 depends on the one hand on the condition that of Biskuits 3 and on the other hand on the length of the pile 151, thus on the distance between sword 16 and last detent 14. Since the size, thickness and the consistency (Luftigkei0 that of Biskuits 3 at the exit of the baking device neither local nor temporally constant, receives one is by no means pile 151 from constant weight, if one stops the pile length once and for all to a constant value. The rigging devices 13 are however now steered by the error signals delivered by the balance 19 in such a way in each case that them the last detent 14 in the sense of an enlargement, and/or a reduction of the pile length to shift, if the determined weight is too large too small, and/or. By the balance the weighed pile 151 then to a packaging machine 20 far by the chain conveyor is brought to 19, then in usual way the pile into a cardboard box brings in or in other well-known way packed. At the exit of the machine 20 appearing finished Biskuitspakete 21 then shipping company devices become weitergeleitet.

[15]

Lagerungsoder On the basis the Fig. 3-7 is now details of the descriptive mechanism described werden.

[16]

In accordance with Fig. 3 the apparatus 12 one exhibits on one side at the table 11 fastened, thus rack-firm support 22, which is provided with a guidance can 23 for a Vierkantstab 24. A part of the staff 24 is provided with an internal thread 24a, into which an adjusting bolt 25 eingreift.

[17]

At the outside end of the can 23 the rigging device 13 is fastened, which consists mainly of an engine, whose rotor shifts the adjusting bolt 25 in turn. At the free end of the Vierkantstabes 24 an operations staff 26 is fastened, which is partly curved, whereby the center of the sheet in the swiveling point 8 swivel-strains 9 lies. The ground swivel-strains 9 by two ground staffs 27 ss is formed, that are fastened ever to a pair by arms 28, which are tiltable around an axle 29. The axle 29 is stored at a block 30, to a swiveling support the 31 belongs, that in accordance with Fig. 4 with two axle ends 32 in the swiveling point 8 to the rack-firmest support 22 is fastened. At the swiveling support 31 are also the two guidance walls 10 for on swivel-strain 9 of Biskuits present 3 angebracht.

[18]

In Fig. 5 is drawn the arms 28 in the swinging out situation in full lines, while the dash-dotted drawn Lago 271 of the ground staffs 27 of the swinging situation of Fig. , in that it corresponds to 3 the Biskuits 3 of the pile 15 tragen.

[19]

The last detent 14 has a guidance extension 34, which is led in a guidance 35 of the Schwenksnpportes 31 and for his part a guidance opening exhibits 36 for the curved operations staff 26 (Fig. 4). With 261 stñchpunktiert the situation of the operations staff is 26 shown, if the Vierkantstab 24 in the sense of an extension of the pile 15 were versteUt. With the dash-dotted suggested situation of the appropriate parts is characteristic 14” 27” 28” 341, 351 after the Herunterschwenken of the Schwenksupportes 31, whereby lo the extension 341 led along the Bogenführung 26 in the situation of 261 ist.

[20]

The sword 16 is in opposite slots 37 two guidance parts of 38 in the sense of the double arrow 39 of Fig. 3 mobile. The guidance parts of 38 rise up from two each other opposite thighs 40 of the rack-firm Supportes 22 inward and are in Fig. 4 only partly dash-dotted suggested, because they would cover otherwise too much. The propellants for the heavy 16 are not represented, and just as also not those for the tiltable arms 28.

[21]

These propellants can any well-known kind sein.

[22]

Against it the means are from special kind with which the piles 151 are supplied by the table 11 of the balance 19 of the packaging machine 20. The chain conveyor with the drivers 17, already mentioned, exhibits of two at the ends these drivers 17 attacking endless chains 41, which further-promote the piles 151 on the table 11, but only to the respective driver 17 about in Fig. 7 with 171 characteristic situation reached. The driver 171 by a driver 421 of a second chain conveyor is overhauled directly afterwards, who exhibits two endless chains 43, whose lower Trume is arranged above the upper Trume of the chains 41. The speed of v2 of the zwei3s of ten chain conveyor is substantially larger than the speed of vi of the first chain conveyor. The driver 422 has, as in Fig. 7 evidently, the pile 151 the driver 172 leading over the table 11 pushed onto the balance 19. The pile 151 is now on the balance 19 and stops as for a long time to the same, until the driver 17z catches up it again and supplies on one the balance 19 subordinate table 44 of the packaging machine 20, as this with the drivers 17” 174 and 172 pointed ist.

[23]

It is emphasized the fact that upright on their Unperlage 11 or 44 of standing Biskuits 3 is promoted by the two chain conveyors parallel to the until kneeling level which for the described interaction of the two chain conveyors is substantial, who ensure a rapid promotion with sufficient stop on the balance 19. In Fig.

[24]

6 it is illustrated that the balance 19 exhibits an edition 45, which has two side guidance 46 one tilting the outermost Biskuits 3 during the weighing verhindern.

[25]

Lateral guidance 47 and 48 are intended also over the tables 11, and/or 44, in order to hold the piles together 151. Because the balance 19 before the packaging machine 20 is, takes place the controlling of the rigging devices 13 with Gewichtsänderungen of the Biskuits supplied by the baking device many more rapidly than so far with weighing from finished packings, like that the custom war.

[26]

If one wants to avoid all too frequent unity divisions with only slight Gewichtsabweichungen, one can plan also Speichervorrichttmgen for the error signals and the circuit in such a way to train that only in each case one attitude comes, if the memory value exceeds a certain limit. A such circuit is e.g. from the CH patent No. 377,272 bekannt.

[27]

With mechanisms of the descriptive kind a very large accuracy can ensured werden.

[28]

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[29]

An article packing system includes a first conveyor for advancing a series of flat articles; at least two stack-forming devices for consecutively forming stacks of variable length from the articles received from the first conveyor; a second conveyor extending from the stack-forming devices for carrying away the stacks; a packing machine for packaging the article stacks received from the second conveyor and a scale for weighing the stacks of articles. The scale is in the conveying path of the second conveyor and is located downstream of the stack-forming devices and upstream of the packing machine as viewed in the direction of article advance on the second conveyor. The latter includes a mechanism for successively advancing the article stacks from the stack-forming devices towards the scale in a direction parallel to the plane of the flat articles. Further, the mechanism sequentially introduces the article stacks into the scale and subsequently advances them from the scale to the packing machine. The scale is operatively connected with the stack-forming devices for varying the length of the stacks in the stack-forming devices as a function of the stack weight measured by the scale.



1. In an article packing system including a first conveyor means for advancing a series of flat articles; at least two stack-forming devices for consecutively forming stacks of variable length from the articles received from the first conveyor means; a second conveyor means extending from the stack-forming devices for carrying away the stacks formed in the stack-forming devices; a packing machine for packaging the article stacks received from the second conveyor means and a scale for weighing the stacks of articles; the improvement wherein said scale is in the conveying path of said second conveyor means and is located downstream of said stack-forming devices and upstream of said packing machine as viewed in the direction of article advance on said second conveyor means; said second conveyor means including a mechanism for successively advancing the article stacks from said stack-forming devices towards said scale in a direction parallel to the plane of the flat articles and sequentially introducing the article stacks into said scale and subsequently advancing them from said scale to said packing machine; further comprising means operatively connecting said scale with said stack-forming devices for varying the length of the stacks in said stack-forming devices as a function of the stack weight measured by said scale.

2. An article packing system as defined in claim 1, wherein said stack-forming devices comprise a movably supported separator having an operative position and a withdrawn position; means for moving said separator into its operative position between the articles for separating the trailing end of the stack from remaining articles upstream thereof.

3. An article packing system as defined in claim 1, wherein said scale includes a platform and lateral guides secured to said platform for holding together the article stack on said platform during weighing by said scale.

4. An article packing system as defined in claim 1, wherein said second conveyor means includes a first chain conveyor extending from said stack-forming devices to said packing machine and having spaced first pusher elements for engaging the article stacks and conveying them in sequence towards said scale; and a second chain conveyor extending from a location upstream of said scale to said scale and having spaced second pusher elements arranged to travel in a conveying path of the article stacks to said scale; means for driving said second chain conveyor with a greater speed than said first chain conveyor for taking over conveyance of the article stacks by said second pusher elements from said first pusher elements onto said scale; said pusher elements being further arranged to deviate from said conveying path at said scale for moving away from the article stack positioned on said scale to allow the respective first pusher elements to take over conveyance of the article stacks from said scale towards said packing machine.

5. An article packing system as defined in claim 4, wherein said first conveyor means comprises a conveyor belt defining, side-by-side, a plurality of parallel tracks each receiving a separate article series; and further wherein with each said track there is aligned a separate said stack-forming device; a separate ramp aligned with each said track for guiding the respective article series to the respective stack-forming device; said second conveyor means comprising a common table situated underneath said stack-forming devices; and means for depositing each article stack formed in the respective article-forming device onto said table for engagement by the respective first pusher elements of said first conveyor chain.

6. An article packing system as defined in claim 1, wherein said stack-forming devices include (a) a swinging track arranged above said second conveyor means for pivotal motion towards and away from said second conveyor means; said swinging track being arranged to be movable into a raised position in which it receives articles from said first conveyor means and into a lowered position in which it brings the articles positioned thereon into the zone of said second conveyor means; (b) a bottom forming part of said swinging track and being arranged to be movable into a closed position in which it supports the articles received from said first conveyor means and into an open position in which it releases the articles onto said second conveyor means; (c) a stop mounted on said swinging track and being arranged in the path of the articles for being abutted by the leading article supported on said swinging track; (d) stop setting means for displacing said stop along the article path on said swinging track for varying the length of the stack of articles on said swinging track as a function of the weight measured by said scale; and (e) means for moving said swinging track from its raised position into its lowered position and said bottom from its closed position to its open position when a stack of a length determined by the position of said stop is formed on said swinging track for depositing the article stack from said swinging track on said second conveyor means.

7. An article packing system as defined in claim 6, wherein said bottom is formed of rail members extending parallel to one another in the direction of the article path on said swinging track; further comprising means for moving said rail members towards and away from one another.

8. An article packing system as defined in claim 6, wherein said stop setting means includes a stationarily supported stop setting device; a setting bar connected to said stop setting device for longitudinally displacing said setting bar; said setting bar being connected to said stop.

9. An article packing system as defined in claim 8, further comprising a stationarily supported sleeve for exclusively longitudinally slidably guiding and setting bar; further wherein said setting bar having a threaded bore into which threadedly engages a set screw rotatably connected with said stop setting device.

10. An article packing system as defined in claim 8, further comprising an arcuate connecting bar affixed to said setting bar and slidably guided in said stop for maintaining operative connection between said setting bar and said stop independently from the pivotal position of said swinging track.

11. An article packing system as defined in claim 10, wherin the center of curvature of said arcuate connecting bar substantially lies in the pivotal axis of said swinging track for maintaining the positon of said stop independently from the pivotal position of said swinging track.