EP3318398B1 - Device for manufacturing containers - Google Patents

Description

The invention relates to a device for producing finished articles, such as containers or trays from a band-shaped material.

Finished articles, for example in the form of trays for packaging food, are usually produced with the help of presses which are operated by crankshaft drives. Independent units, such as an unwinding or feeding unit for delivering a strip-shaped material; a press unit for pressing the finished articles from the band-shaped material and a stacking unit for collecting and stacking the finished articles produced along a production line. For example, the band-shaped material consists of aluminum.

From the US 4,534,725 A is a device that includes a feed unit, a pressing unit and a stacking unit, which are arranged separately next to each other. In this case, a winding is arranged in a first frame arranged next to the pressing unit, of which according to Figure 1 the band-shaped material is unwound and conveyor rollers are fed, which are located in the press unit. The pressing device is located in a second housing which is spaced apart from the first housing. According to FIG. 6, the finished articles produced in the pressing unit are fed via a ramp to a stacking unit which is arranged in a third housing which is spaced apart from the second housing of the pressing unit.

From the DE 22 11 928 A A device for producing cup-shaped moldings is known, in which the band-shaped material is unwound from a roll and fed to a chain transport device via a deflection roller. A pressing device comprises an upper, stationary molded part and a lower, movable molded part. The finished articles produced in the pressing device are subsequently stacked in a stacking station.

In the EP 2274159 B1 describes a device of the present type which comprises a feed unit in which the strip-shaped material is unwound from a spool. The unwound band-shaped material is gradually one Press unit supplied, in which it is passed between an upper mold part and a lower mold part. When pressed against one another, the upper molded part and the lower molded part form a cavity between them which corresponds in terms of its shape and size to the finished article to be produced. During the pressing process, the upper molded part is moved in the direction of the fixedly arranged lower molded part with the aid of a threaded mechanism operated by an electric motor. The pressed finished articles are then removed from the pressing unit by a removal device and subsequently fed to a stacking unit and stacked. The feed unit, the pressing unit, the removal device and the stacking unit are arranged as separate units along a production line in the order mentioned in the longitudinal direction one behind the other.

The object of the present invention is to improve a known device of the aforementioned type so that it is relatively compact and space-saving and at the same time cost-saving with regard to its installation and operation.

To achieve this object, the device according to the invention comprises the features according to claim 1.

The main advantage of the present invention is that the present device for producing finished articles from a band-shaped material is designed as a compact unit which has a feed area in which the band-shaped material is unwound from a spool, a pressing area in which the finished articles are pressed from the band-shaped material and comprise a stacking area in which the finished articles successively produced in the pressing area are stacked. It is essential that the areas mentioned are arranged directly next to one another in a common housing or frame and are functionally and structurally combined to form a narrow or compact unit.

Advantageously, the feed area, the pressing area and the stacking area are arranged as a compact unit in a common frame are, the manufacturing costs of the device according to the invention are significantly reduced.

Since the present invention is designed as a compact unit which has a relatively small footprint, the installation of the device in a factory hall or the like requires a much smaller area than is the case with the known devices. This leads to considerable cost savings.

Since the present unit has a relatively low weight, it can be moved relatively easily and transported inexpensively. Air transport, which is faster than transport by ship, is therefore also possible.

Another significant advantage of the present invention is that the present device, designed as a compact unit, for pressing finished articles can be easily controlled by a single operator, whereas in the known device explained above, in which separate devices are separated from one another along a production line Unwinding, pressing and stacking units are arranged side by side, multiple operators are required.

The fact that the unwinding wheel arranged on an arm part can be arranged on the surface of the winding results in a particularly space-saving arrangement of the individual parts (winding, arm part, unwinding wheel, drive, conveyor rollers) of the feed area in the longitudinal and transverse directions and in the height of the present Facility.

The present device is particularly advantageous because it is simple and compact because, in the case of a guide surface in the feed region of the frame, it is arranged between a guide roller connected downstream of the winding and fastened to the frame and the conveyor rollers in order to move the band-shaped material from the guide roller to the gap between the conveyor rollers, with the guide surface above the arm part.

A further advantage results from the fact that in the present invention the winding is arranged on a spool, the shaft of which is mounted in opposite transverse receiving parts, which are arranged on opposite regions of the frame. If necessary, different spools with different band-shaped materials for the production of different finished articles can therefore be exchanged quickly and easily.

In an advantageous embodiment of the invention, the finished articles produced in the pressing area are fed to the stacking area and stacked on a conveyor table arranged in the frame, which is preferably designed to be height-adjustable. Its position can therefore be adapted to the respective stacking height of the finished articles during the stacking process.

In a preferred embodiment of the invention, the waste material obtained from the web-shaped material during the pressing is advantageously conveyed via a guide shaft into a waste collection container which is arranged in the stacking area under the conveyor table, the guide shaft being formed in the frame between the pressing area and the stacking area and therefore takes up little space. In this way, the waste generated during pressing is ready for quick and easy disposal. In an advantageous embodiment of the invention, the guide shaft comprises a first leg area and a second leg area which are connected to one another in a corner area, the first leg area starting from the pressing area and the second leg area ending above the waste collection container. A nozzle arrangement is arranged in the corner area in such a way that it sucks the waste arising during the pressing from the pressing area into the first leg area to the corner area and presses it out of the corner area into the second leg area. In this way, particularly fast and effective transport of the waste from the pressing area to the waste collection container is achieved - integrated into the frame.

In order to make the present device particularly compact, the electronics for controlling the device in a further development of the invention are in the frame, preferably on a panel mounted in the frame under the pressing area arranged.

In one embodiment of the invention, the belt wheels which are opposite each other in the transverse direction are particularly preferably arranged on a common shaft mounted in the frame, wherein one shaft of a pair of belts can be driven by a drive motor.

In an advantageous development of the invention, four guide rails (38) are arranged on the frame, each of which guides a corner region of the upper mold-holding part (20).

• Figur 1 eine Ausführungsform der erfindungsgemäßen Einrichtung zur Herstellung von Fertigartikeln in perspektivischer Darstellung;
• Figur 2 einen Längsschnitt durch die erfindungsgemäße Einrichtung der Figur 1
• Figur 3 eine Seitenansicht der erfindungsgemäßen Einrichtung, und
• Figur 4 eine Ansicht der erfindungsgemäßen Einrichtung von oben.

The invention and its embodiments are explained below in connection with the figures. Show it:

• Figure 1 an embodiment of the device according to the invention for the production of finished articles in a perspective view;
• Figure 2 a longitudinal section through the inventive device of Figure 1
• Figure 3 a side view of the device according to the invention, and
• Figure 4 a view of the device according to the invention from above.

According to the Figures 1 to 4 comprises the present device 1 for producing finished articles, in particular containers or trays, for example for holding fruit or the like, in a housing or frame 2 directly in A feed area 3, a pressing area 4 and a stacking area 5 lying side by side in the longitudinal direction.

In the feed area 3, a coil 6 is mounted on a shaft 7, the coil 6 being a winding 8 made of the band-shaped material 9 ( Figure 3 ) includes or bears. The spool 6 with the winding 8 is set in rotation by an unwinding wheel 10 which bears against the surface of the winding 8 and is set in rotation by an electric drive 11. The unwinding wheel 10 is preferably located on an end region of an arm part 12, which is about a pivot point 13 ( Figure 3 ) is rotatable at its other end region. The unwinding wheel 10 rests on the surface of the winding 8, so that the winding 8 is set in rotation in the direction of the arrow 15. A drive motor 11 is arranged on the frame 2 and drives the drive wheel via a gear mechanism 39.

The coil 6 carrying the winding 8 can be used with its shaft 7 in a simple manner, preferably in upwardly opening troughs 15 of two receiving parts 14, which are fastened opposite one another in the transverse direction on the frame parts 16, 16 or on the frame 2. The unwinding wheel 10 is expediently a wheel, the surface of which is rubberized or provided with another non-slip coating in order to transmit its rotation to the reel 8 in a particularly effective and slip-resistant manner.

As already mentioned, the frame 2 preferably comprises two parallel frame parts 16 which are spaced apart from one another perpendicularly to the longitudinal axis and connected to one another in the transverse direction, to which all relevant elements of the present device 1 are fastened.

The band-shaped material unwound from the winding 8 expediently runs over a rotatable guide roller 17, which is also fastened to the frame parts 16. Above the arm part 12, a guide surface 30 is arranged on the frame 2, via which the web-shaped material 9 is guided to two conveyor rollers 29, 29 arranged one above the other. The plate-shaped guide surface 30 can be made from the Figure 4 Obvious recesses or openings 40 to prevent undesirable adhesion of the band-shaped Material 9 to prevent. Preferably one of the conveyor rollers 29, e.g. B. the lower roller, fixed to the frame 2, while the other, in the example the upper conveyor roller 29 is vertically movably attached to the frame 2 so that it can exert a predetermined pressure on the web-shaped material introduced into the gap between the conveyor rollers. The targeted application of pressure is preferably carried out by a piston / cylinder arrangement 32 arranged on the frame 2. Undesired sagging of the band-shaped material 9 downwards can be prevented by correspondingly controlling the conveyor rollers 29 with a signal generated by a sensor 31 arranged on the frame 2.

The positioning of the conveyor rollers 29, 29 in the immediate vicinity of the pressing area 4 is of considerable importance for precise, fast and error-free working of the present device 1. Only this proximity enables an exact, wave-free feeding of the web-shaped material directly into the pressing area 4 and to the molded parts 18, 19.

The pressing area 4 comprises a fixed lower mold holding part 27 fastened to the frame 2 and an upper mold holding part 20 movably arranged on the frame 2 is attachable. In this way, it is achieved that the mold parts 19 required for producing individual finished articles can be mounted on the mold holding parts 20 and 18 on the mold holding part 27.

For the vertical movement of the mold-holding part 20 are in particular from the Figure 1 Obviously, four drive belts 21 are provided, two pairs of drive belts 21 being provided opposite one another in the transverse direction and spaced apart in the longitudinal direction. A drive belt 21 runs at one end, ie above and below, around a belt wheel 22 which is rotatably mounted on the frame 2 or on a frame part 16. In the Figure 1 the drive belts 21 and the belt wheels 22 are partially shown only schematically. The upper and lower belt wheels 22, which are opposite each other in the transverse direction, are preferably located in each case a shaft 23 which is mounted between the frame parts 16 lying opposite one another in the transverse direction. A shaft 23 of an opposing pair of belts is preferably driven by a drive motor 24 which is fastened to the frame 2. The form-holding part 20 is fastened to the four drive belts 21 on opposite sides in the longitudinal direction or at four corner regions, so that when the drive motors 24 are actuated accordingly, it can be moved vertically in the direction of the lower form part 18 or away from it. The web-shaped material 9 is guided by the conveyor rollers 19, 19 directly through the molded parts 19 and 20, so that a finished article can be produced from it when the upper molded part 20 moves against the lower molded part 19.

Four guide rails 38 are mounted in the frame 2, in which the form-holding part 20 is guided during its vertical movement. The four corner regions of the mold-holding part 20 are expediently guided in the guide rails 38, so that the mold-holding part 20 is guided in a particularly precise and play-free manner. This is important for the quality of the finished articles manufactured.

The stacking area 5, to which the finished articles produced in the pressing area 4 are successively fed and stacked one above the other, is arranged directly next to the pressing area 4. The stacking area 5 expediently comprises a conveyor table 34 on which the stacked finished articles are deposited and stacked. The conveyor table 34 is preferably designed as a lifting table, which can be lowered from a raised state depending on the size or height of the stack arranged on it. The operating personnel can then remove the stacks accumulating on the conveyor table.

Under the conveyor table 25 there is preferably a waste collection container 26, in which the waste produced during the pressing process in the pressing area 4 from the web-like material is collected. The pressing area 4 is connected directly to the waste collection container 26 via a guide shaft 32 formed in the frame 2. A nozzle arrangement 33 is provided in the guide shaft 32, which generates a flow that draws the waste out of the pressing area 4 and into the Waste collecting container 26 presses or transported. The guide shaft 32 is preferably L-shaped or angled, the one leg region 35 extending directly from the pressing region 4 horizontally to a corner region 36 in which the nozzle arrangement 33 is arranged. Starting from the corner region 36, the other leg region 37 runs downwards over the waste collecting container 26, so that the waste sucked out of the nozzle arrangement 33 from the pressing region 4 via the first leg region 35 is conveyed via the corner region 36 into the leg region 37 and from there into the waste collecting container 26.

Another advantage of the present device 1 is that comparatively little waste arises when the finished articles are pressed, because the shaped parts 18, 19 and the width of the sheet-like material 9 can each be coordinated with one another in such a way that the pressing of material is very close to the edge of the band-shaped material 9 can take place.

Under the lower, stationary mold holding part 27 there is preferably an area in which all the electronics required for controlling the device 1 are accommodated. For example, this electronics is located on a panel 28 which is easily accessible from the outside.

The finished articles produced with the present device 1 are preferably shell parts which are produced from a sheet-like aluminum foil unwound from the winding 8. Other sheet-like materials, such as plastic sheets or the like, are conceivable.

Reference number:

1

Facility

2nd

frame

3rd

Feed area

4th

Press area

5

Stacking area

6

Kitchen sink

7

wave

8th

Wrap

9

sheet material

10th

Unwinding wheel

11

electric drive

12

Arm part

13

pivot point

14

Recording part

15

arrow

16

Frame part

17th

Leadership role

18th

lower molding

19th

upper molding

20th

upper mold part

21st

Drive belt

22

Pulley

23

wave

24th

Drive motor

25th

Promotion table

26

Waste collector

27th

lower mold part

28

Panel

29

Conveyor role

30th

Leadership area

31

sensor

32

Guide shaft

33

Nozzle arrangement

34

Promotion table

35

Thigh area

36

Corner area

37

Thigh area

38

Guide rail

39

Gear mechanism

40

openings

Claims (7)

1. Device for manufacturing finished articles from a strip-shaped material (9), wherein a roll (8) of the strip-shaped material (9) can be rotatably mounted in a feed region (3), wherein the material (9) unwound from the roll (8) can be fed to a gap between conveyor rollers (29, 29) and a pressing region (4),
   wherein the pressing region (4) has a first, movably arranged moulded retaining part (20) and a second moulded retaining part (27) mounted in a stationary manner, which can be moved towards one another and away from one another by a drive in such a manner that the unwound strip-shaped material (9) can be moved by the conveyor rollers (29) directly between moulded parts mounted on the moulded retaining parts (20, 27) for the manufacture and release of a finished article, wherein the moulded parts can be moved successively between a closed and a release position, and
   wherein the manufactured finished articles can be moved successively from the pressing region (4) into a stacking region (5) and can be stacked in said stacking region,
   characterised in that
   the feed region (3), the pressing region (4) and the stacking region (5) are arranged next to one another in the longitudinal direction in a common frame (2), that the two conveyor rollers (29, 29) are arranged in the frame (2), that the second moulded retaining part (27) is mounted in a stationary manner in the frame (2), and that the manufactured finished articles can be moved successively directly from the pressing region (4) into the stacking region (5),
   that in the feed region (3) an unwinding wheel (10) mounted on an arm part (12) can be arranged on the surface of the roll (8) and can be driven by a drive (11), in order to rotate the roll (8) and in order to unwind strip-shaped material (9) from the roll (8), that the arm part (12) is pivotably mounted about a pivot point (13) in the frame (2), which pivot point is spaced apart from the drive (11), that in the frame (2) in the feed region (3) a guide surface (30) is arranged between a guide roller (17) fastened to the frame (2) and the conveyer rollers (29, 29), in order to guide the strip-shaped material (9) from the guide roller (17) to the gap between the guide rollers (29, 29), that the guide surface (30) is located above the arm part (12), that the roll (8) is located on a reel (6), the shaft (7) of which is mounted in transversely opposite receiving parts (14), which are arranged on opposite regions of the frame (2),
   that in the pressing region (4) the upper moulded retaining part (20) is fastened to each transversely opposite side of the frame (2) on opposite sides of two drive belts (21) running parallel, spaced apart from one another in the longitudinal direction, that the drive belts (21) in each case run between two belt wheels (22), which, viewed in the direction of movement of the upper moulded retaining part (20), are arranged rotatably above one another in the frame (2), that the belt drives (21) can be driven by at least one drive motor (24) arranged on the frame (2), and that the upper moulded retaining part (20) is guided during its movement in guide rails (38), which are fastened to the frame (2).
2. Device according to claim 1, characterised in that the waste material produced from the strip-shaped material (9) during the pressing is conveyed via a guide shaft (32) into a waste collection container (26) which is arranged in the stacking region (5) below the conveyor table (25), wherein the guide shaft (32) is formed in the frame (2) in the transition region between the pressing region (4) and the stacking region (5).
3. Device according to claim 2, characterised in that the guide shaft (32) comprises a first leg region (35) and a second leg region (37), which are connected with one another in a corner region (36), wherein the first leg region proceeds from the pressing region (4) and the second leg region (37) ends above the waste collection container (26), and that in the corner region (36) a nozzle arrangement (33) is arranged in such a manner that it sucks the waste produced during the pressing out of the pressing region (4) into the first leg region (36) to the corner region (35) and presses it from the corner region (36) into the second leg region (37).
4. Device according to any one of claims 1 to 3, characterised in that the electronics system for the control of the device (1) is arranged in the frame (2) below the pressing region (4), preferably on a panel (28) mounted in the frame (2).
5. Device according to any one of claims 1 to 4, characterised in that the in each case transversely opposite belt wheels (22) are mounted on a common shaft (23), wherein in each case a shaft (23) of a pair of belts can be driven by the drive motor (24).
6. Device according to any one of claims 1 to 5, characterised in that four guide rails (38) are arranged on the frame (2), of which in each case one guide rail guides a corner region of the upper moulded retaining part (20).
7. Device according to any one of claims 1 to 6, characterised in that the finished articles manufactured in the pressing region (4) can be stacked in the stacking region (5) on a conveyor table (25) arranged in a height-adjustable manner in the frame (2).

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