Stacking table

Abstract

A deposition table (1) comprising a deposition device (2), a displacement device (3), and an air supply device (4), wherein the deposition device (2) is configured to be movable by the displacement device (3) at least between a closed position (5) and an open position (6), and an upper side (7) of the deposition device (2) comprises a deposition surface (8) for receiving a sack layer (200). The deposition device (2) is configured such that air can flow therethrough, an air supply opening (10) is provided on a lower side (9) of the deposition device (2), and the deposition surface (8) has an air discharge opening (11). The air supply device (4) comprises an air guiding element (12) having an air outlet opening (13) and a connecting device (14), and the connecting device (14) is arranged between the air outlet opening (13) of the air guiding element (12) and the air supply opening (10) of the deposition device (2). The connecting device (14) is preferably configured to achieve a length compensation in the same plane between the air outlet opening (13) and the air supply opening (10) when the deposition device (2) is moved. A palletizing device (100) for palletizing small parts (300) comprises a conveying device (101) having a conveying element (102) for conveying the small parts (300) and such a deposition table (1).

Description

Technical Field

[0001] The present invention relates in particular to a deposition table for a palletizing device for palletizing sacks. Depending on the configuration, at least one sack layer can be formed on such a deposition table and then extruded onto a pallet or the like. For this purpose, the deposition table comprises at least one deposition device, at least one displacement device, and at least one air supply device, and the deposition device is formed to be movable by the displacement device at least between a closed position and an open position. The upper side of the deposition device comprises at least one deposition surface for receiving at least one sack layer, and the deposition device is formed such that air can flow at least partially therethrough. For this purpose, at least one air supply opening is provided on the lower side of the deposition device, the deposition surface has at least one air discharge opening, and the air supply device comprises at least one air guiding element having at least one air outlet opening and at least one connecting device. The connecting device is arranged between the air outlet opening of the air guiding element and the air supply opening of the deposition device. The present invention further relates to a palletizing device for palletizing small pieces, in particular sacks or filled sacks, in particular sacks filled with small pieces, comprising at least one conveying device having at least one conveying element for conveying the small pieces and at least one such deposition table.

Background Art

[0002] So-called palletizing devices are often connected, for example, downstream of packaging equipment for filling small pieces into sacks, and the palletizer stacks the filled sacks onto a pallet within a specific sack layer. Thus, depending on the equipment, optimal further transport of the filled sacks or also other small pieces can be ensured.

[0003] To palletize the filled sacks, a specific number of sack layers of sacks in a specific arrangement are placed on a so-called deposition table, and then deposited on a pallet located under the deposition table, for example, by pulling the deposition table away.

[0004] When the sack is extruded, it does not deform, and to generally facilitate the extrusion, the air flow between the deposition table and the sack is generated, depending on the configuration, to facilitate the extrusion or sliding from the support surface of the sack respectively in the case of known palletizing devices.

[0005] Depending on the configuration, for this purpose, air is introduced into a deposition table formed to be at least partially hollow, and the air escapes through the openings of the support surface, thus forming a kind of air cushion under the sack layer.

[0006] To introduce air into the deposition table, an air hose is provided in the case of known palletizing devices, and this air hose is provided on the deposition table like a so-called monkey swing. When the deposition table is moved back and forth, or when the sack layer is extruded onto the pallet, the required length difference and / or angular offset are compensated respectively.

Summary of the Invention

Problems to be Solved by the Invention

[0007] However, in the case of such a configuration, there is a drawback that a fairly large installation space is required for the monkey swing. Furthermore, it is necessary to ensure that the hose does not collide with the conveying element that conveys the sack to the deposition table when moving back and forth. This may cause the operation of the palletizing device to be interrupted or damage to occur. The relatively large movement path in part also results in relatively rapid wear of the air hose.

[0008] Accordingly, an object of the present invention is to provide a deposition table in which the extrusion of the sack layer is facilitated by a certain air cushion under the sack, the structural efforts required for this purpose require as little space as possible, and a reliable operation is ensured.

Means for Solving the Problems

[0009] This object is solved by a deposition table having the features of claim 1 and by a palletizing device having the features of claim 15. Preferred further developments of the present invention are the subject matter of the dependent claims. Further advantages and features of the present invention result from the general description and the description of the exemplary embodiments.

[0010] The deposition table according to the present invention can be used, in particular, for palletizing sacks, either for or within a palletizing device. The deposition table comprises at least one deposition device, at least one displacement device, and at least one air supply device. Thereby, the deposition device is formed to be movable by the displacement device at least between a closed position and an open position. The upper side of the deposition device further comprises at least one deposition surface for receiving at least one sack layer, and the deposition device is formed such that air can flow through at least partially. At least one air supply opening is provided on the lower side of the deposition device, and the deposition surface has at least one air discharge opening. The air supply device comprises at least one air guiding element having at least one air outlet opening and at least one connecting device, and the connecting device is arranged between the air outlet opening of the air guiding element and the air supply opening of the deposition device. Thereby, the connecting device is preferably formed to achieve a length compensation in a substantially same plane between the air outlet opening and the air supply opening when the deposition device is moved.

[0011] An air supply device, in particular, can generate a certain type of air cushion under a sack arranged on a deposition device in order to reduce the coefficient of friction, thereby preventing the sack from deforming when the deposition device is pulled away or opened.

[0012] For this purpose, the deposition table or the deposition device is each ventilated from the inside. In particular, no large pressure is established by this ventilation. In particular, a simple blower can be preferably used.

[0013] In order to configure the deposition device so that it can be moved, the displacement device is particularly provided with at least one rail system, and the plate or the deposition device thereon can each be moved, for example, by a belt drive.

[0014] In particular, in order to provide air for generating the air cushion, a plurality of air discharge openings are respectively provided in the deposition device or the deposition surface, and in particular, are provided in most parts of the surface of the deposition table or the deposition device, especially the entire surface.

[0015] In the closed position of the deposition device, at least one pallet can preferably be respectively arranged under the deposition table or under the deposition device, and when the deposition device is opened, the sack layer arranged on the deposition device is deposited or extruded onto the pallet.

[0016] Therefore, each closed position or extended position of the deposition device is a position where the pallet is covered under the deposition table. The sack layer is placed on the deposition device at this position. Therefore, the open position is a position where the deposition device is respectively retracted or retreated so that the pallet under the deposition table is released to extrude the sack onto the pallet.

[0017] The deposition table according to the present invention offers many advantages. One important advantage is that it can provide a certain kind of air cushion for easily extruding the sack layer in order to reduce the friction coefficient, whereby the sack does not deform when it is extruded onto a pallet or the like.

[0018] Due to the configuration according to the present invention, this is possible with a very flat structure, whereby the remaining assembly space is not obstructed. Otherwise, in order to be able to provide a longer travel path, the common air hose provided in the so-called monkey swing method is not required. Otherwise, a longer travel path often results in significant wear and further causes, for example, a collision with the lower running part of the conveying device that conveys the sack to the deposition table. In particular, the deposition table can be moved in this way between the upper running part and the lower running part of the conveying element, thereby reducing the transfer height from the conveying device onto the deposition table. Depending on the configuration, if the height offset at this point is large, it will lead to deformation of the sack during the transfer of the sack, and as a result, the stack pattern on the pallet will deteriorate.

[0019] The connecting device is preferably formed at least partially telescopically. The telescopic type or the telescopable type is particularly understood to perform length compensation between the air discharge opening and the air supply opening when the deposition device is moved.

[0020] The air guiding element is preferably provided in a fixed manner. Therefore, a reliable and stable assembly of the air of the air guiding element can be achieved, and a configuration having a very flat structure can also be provided.

[0021] It is particularly preferred that the connecting device is present in a plane substantially parallel to the deposition device. Thereby, the connecting device is particularly arranged substantially parallel to the deposition surface or the lower side that are respectively parallel.

[0022] The connecting device is preferably formed in a substantially rigid manner such that it does not sag particularly or is not provided in a so-called monkey swing manner.

[0023] In an advantageous configuration, the connecting device is rotatably connected, in particular in each case, by means of at least one pneumatic rotary feed-through to the air discharge opening of the air guiding element and / or the air supply opening of the deposition device. Thus, since the connection of the connecting device is configured to be rotatable and the connecting device itself is formed substantially telescopically, it is possible to achieve displacement of the deposition device despite the use of rigid components.

[0024] In a preferred further development, the connecting device is arranged substantially transversely to the direction of movement of the deposition device. Thereby, the connecting device is preferably arranged transversely or substantially transversely to the direction of movement of the deposition device, respectively, at least at one position.

[0025] Alternatively, if the connecting device is arranged in the longitudinal direction of the movement direction, the rotary feed-through can be omitted in a convenient further development. Depending on the configuration, this may be necessary to increase the stroke of the device in the transverse direction.

[0026] The air outlet opening of the air guiding element is preferably substantially equally spaced from the air supply opening in the closed and open positions of the deposition device.

[0027] The connecting device particularly preferably has a substantially maximum extension when the deposition device is in the closed and / or open position.

[0028] In a further advantageous development, the connecting device has a substantially minimal extension when the deposition device is in a position between the closed position and the open position, and thus especially when it is in an intermediate position. In particular, for example, when using a telescopic pipe as the connecting device, the pipe is present so as to be retracted into the intermediate position, and in any case is defined to extend or telescope respectively to the end points or the open and closed positions. Thereby, the distance to be telescoped is minimized, and thus wear is reduced.

[0029] The telescopic connecting device preferably comprises at least one pipe-in-pipe system. Thus, for example, the pipe-in-pipe system can be composed of, for example, a 120 mm pipe.

[0030] The pipes of the pipe-in-pipe system are preferably not connected to each other in a (completely) liquid-tight manner. Thereby, in particular, it can be defined so that an intentional leak is provided or no seal is used, whereby the existing dust or particles are discharged by the leaking air respectively. Such an air flow generated by the leak simultaneously creates an air cushion that reduces wear. In an advantageous configuration, the telescopic connecting device has at least one bellows. The telescopic connecting device can also be provided by such a configuration in addition to or exclusively to the pipe-in-pipe system, and this bellows is provided to be embodied in a sufficiently rigid manner on condition that it does not sag significantly or does not sag significantly. The bellows can also preferably be provided as a protective object.

[0031] The telescopic connecting device preferably comprises at least one carrier device that is articulated. Thus, for example, it is also possible to provide, for example, a V-shaped strut as a support for the hose. This V-shaped configuration is preferably in a plane parallel to the deposition device and is folded towards the end layer, and as a result, a telescopic connecting device is also provided.

[0032] In a further advantageous development, at least one blower device is connected to at least one air inlet of the air guiding element. A sufficient air flow to generate an air cushion effect can preferably be provided via this blower device.

[0033] The palletizing device according to the invention for palletizing small parts, in particular sacks (in particular sacks filled with small parts), comprises, as described above, at least one conveying device having at least one conveying element for conveying the small parts and at least one deposition table.

[0034] The palletizing device according to the invention also includes the advantages already described above with respect to the deposition table according to the invention.

[0035] The deposition device of the deposition table can preferably be displaced at least partially between the upper running part and the lower running part of at least one conveying element of the conveying device. Due to the fact that the deposition device can be displaced between the upper running part and the lower running part, a configuration having a particularly flat structure can be realized in particular.

[0036] In an advantageous further development, the connecting device is arranged at least partially between the upper running part and the lower running part in a plane parallel to the upper running part and / or the lower running part. Due to the fact that the connecting device is also arranged between the upper running part and the lower running part of the conveying element, a configuration having a particularly flat structure can be achieved without causing a collision between the conveying element and the component.

[0037] In a further advantageous development, the air guiding elements are each arranged or can be arranged at least partially between the upper running part and the lower running part in a plane parallel to the upper running part and / or the lower running part. Here too, the same advantages as already described above apply, namely the advantage that a configuration having a particularly flat structure becomes possible.

[0038] Further advantages and features of the invention result from the exemplary embodiments described below with reference to the accompanying drawings.

Brief Description of the Drawings

[0039]

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[0040] An exemplary embodiment of a palletizing device 100 according to the invention having a deposition table 1 according to the invention is shown purely schematically in a perspective view from above in FIG. 1. The palletizing device 100 shown here is provided for arranging sacks 201 filled with small parts on a pallet in a predetermined layer pattern or for palletizing the sacks. For this purpose, the palletizing device 100 comprises a sack feed-in section 105 for receiving sacks filled by a packaging facility 400, which is not shown in more detail.

[0041] A smoothing device 106 for adapting the height of the filled sack 201 or the small parts 300 to be packaged, respectively, is arranged downstream of the sack feed-in section 105, so that there is particularly good stackability of the sacks 201.

[0042] In the exemplary embodiment shown, three gripping and rotating devices 107 for orienting the sacks 201 to be stacked or the small parts 300 to be stacked, respectively, are arranged downstream of the smoothing device 106, so that a specific layer pattern with correspondingly oriented sacks 201 can be generated on the deposition table 1 or on an intermediate storage surface.

[0043] Here, a conveyor device 101 having a conveyor element 102 ending next to the deposition table 1 serves the purpose of conveying the sacks 201 or the small parts 300, respectively. The sacks 201 can then be pushed or conveyed onto the deposition table 1 by the conveyor element.

[0044] Two views are shown in FIG. 2 of the area of the palletizing device 100 according to the invention having the deposition table 1 according to the invention, whereby the deposition table or deposition device 2 is shown in the open position 6 in the left view, whereby the closed position 5 of the deposition device 2 is shown purely schematically in the right image.

[0045] Pallets having stacked sacks 201 or having stacked small pieces can be seen next to the palletizing device 100 respectively, whereby in the exemplary embodiment shown here, it can be seen that the uppermost sack layer 200 has a layer pattern in which two sacks are aligned longitudinally and three sacks are aligned transversely. Thus, the sack layer 200 is oriented in the opposite direction thereunder to provide a particularly stable stacking of the sacks.

[0046] During the palletizing of the sacks 201, the sack layer 200 is first formed on the deposition table 1 or the deposition device 2 respectively. When the sack layer 200 is formed, the deposition device 2 is displaced to the closed position 5 and is positioned above the pallet from which the sacks 201 will later be pushed out.

[0047] When the sack layer 200 is in the correct position, the deposition device 2 is pulled away, whereby the sack layer 200 is pushed out onto the pallet located thereunder or onto the sack layer 200 already arranged on the pallet respectively.

[0048] The deposition table 1 according to the invention is shown purely schematically in the perspective view of FIG. 3. Here, it can be seen that the deposition table 1 has a deposition device 2, and the deposition device 2 has a deposition surface 8 on which the sacks 201 can be arranged to form the sack layer 200.

[0049] Thereby, the deposition device 2 is at least partially formed hollow or formed such that air can flow therethrough, whereby air can be blown out through the air discharge openings 11 on the upper sides 7 of the deposition device 2 or the deposition surface 8, respectively, whereby a certain air cushion is formed under the sack layer 200, facilitating the extrusion onto the pallets under the deposition table 1 or the deposition device 2, respectively.

[0050] According to the invention, the deposition table 1 comprises an air supply device 4 in order to supply air to the deposition device 2 or the air discharge openings 11, respectively. In the exemplary embodiment shown here, the air supply device 4 has an air guiding element 12 with an air inlet 17 which is connected here to a blower device 16.

[0051] The air flow provided by the blower device 16 is here supplied to the air inlet 17 of the air guiding element 12 via a pipe, and the air flow is further guided to an air outlet opening 13 which is in contact with a connecting device 14 via the air guiding element 12. The connecting device 14 is here provided by pipes 20 which engage with each other in a telescopic manner. The length of the connecting device 14 can be changed or telescoped respectively by such a pipe-in-pipe system 19.

[0052] The connecting device 14 is rotatably connected on one side to the air outlet opening 13 of the air guiding element 12 by means of an air pressure rotary feed-through 15. A rotatable connection which is also formed here as an air pressure rotary feed-through 15 and is connected to the air supply opening 10 on the lower side 9 of the deposition device 2 is also provided on the other side.

[0053] The deposition table 1 shown in FIG. 3 is shown in FIG. 4. Since the deposition surface 8 is not shown here, the inside of the deposition device 2 and thus also the air supply opening 10 of the deposition device 2 can be seen.

[0054] The deposition table according to the invention according to the figures shown previously is shown in a cross-sectional view from the side of FIG. 5. In the exemplary embodiment shown here, the deposition device 2 is in the open position 6, and the deposition device 2 is at least partially present between the upper running part 103 and the lower running part 104 of the conveying element 102 of the conveying device 101 of the palletizing device 100.

[0055] This is an important advantage of the present invention because a particular configuration of the air supply device 4 enables a particularly flat structure to be configured, and the deposition device 2 can be displaced without the risk of collision with the conveying element 102 of the conveying device 101.

[0056] This results from the fact that, for example, the connecting device 14 is provided as flat as possible in a plane parallel to the deposition device 2 below the deposition device 2. Regardless of the position of the deposition device 2 in this plane, due to the fact that the connecting devices are respectively held or arranged, installation in a particularly small assembly space is possible. The deposition device 2 can in particular also be moved together with the connecting device 14 between the upper running part 103 and the lower running part 104.

[0057] An exemplary embodiment of the deposition table according to the invention without the deposition device 2 is shown purely schematically in FIGS. 8 to 10. Here, it can be seen that the respective displaceability or mobility of the deposition device 2 is achieved here by the displacement device 3 provided by the rail system 22.

[0058] Thereby, the fully closed position 5 is shown in FIG. 8, the intermediate position 21 is shown in FIG. 9, and the fully open position 6 is shown in FIG. 10.

[0059]

[0060] ​In these figures, it can be seen that the connection of the air supply device 4 to the deposition device 2 is made possible by the telescopic connection device 14. Accordingly, rigid or fixed air guide elements 12 to which the connection device 14 is connected are provided here respectively.

[0061] Thereby, here, when the deposition device 2 is in the intermediate position 21, a pipe-in-pipe system 19 that extends or expands and contracts minimally is provided respectively. Therefore, it becomes possible to extend the connection device 14 or the pipe-in-pipe system 19 to the two end layers respectively, that is, to the open position 6 and the closed position 5. Therefore, the connection device 14 in the intermediate position 21 is present substantially horizontally with respect to the moving direction 18.

[0062] By providing a pipe-in-pipe system 19 having a connection portion formed substantially rigidly, it becomes possible to provide a connection portion of the air supply device 2 to the deposition device 2 having a particularly flat structure. Thereby, it is also possible to achieve that the deposition device 2 can be moved between the upper running part 103 and the lower running part 104 of the conveying element 102 or the conveying device 101 respectively without worrying about collisions such as those that would occur or might occur when using an air hose when using a so-called monkey swing.

[0063] The open position 6, the intermediate position 21, and the closed position 5 of the deposition device 2 are shown again from the lower part of FIGS. 11 to 13. Different deflections of the telescopic connection device 14 can also be seen here.

[0064] Depending on the configuration, the pipe-in-pipe system 19 consisting of at least two pipes 20 can be used as the connection line 14 in the exemplary embodiment shown here. Specific sealing of this system is not necessary and not desirable depending on the configuration. Thus, for example, due to a specific leak, it can be achieved that the dust that has entered the connection device 14 is blown out again. Furthermore, a completely tight system is not necessary because a particularly large pressure for forming an air cushion under the sack layer 200 is not required. The flow of air between the pipe components forms an air cushion that particularly reduces wear during movement.

[0065] Depending on the configuration, different types of connection devices 14 can also be provided. In addition to the pipe-in-pipe system 19, for example, a certain type of bellows can be used, or, for example, a hose held in a V-shaped support structure that can move in the corresponding plane can be used.

Description of Reference Numerals

[0066] 1 Deposition table 2 Deposition device 3 Displacement device 4 Air supply device 5 Closed position 6 Open position 7 Upper side 8 Deposition surface 9 Lower side 10 Air supply opening 11 Air discharge opening 12 Air guiding element 13 Air outlet opening 14 Connection device 15 Pneumatic rotary feed-through 16 Blower device 17 Air inlet 18 Moving direction 19 Pipe-in-pipe system 20 Pipe 21 Intermediate position 22 Rail system 100 Palletizing device 101 Conveyor 102 Conveyor element 103 Upper traveling part 104 Lower traveling part 105 Sack feeding-in part 106 Smoothing device 107 Gripping and rotating device 200 Sack layer 201 Sack 300 Small piece products 400 Packaging equipment

Claims

1. A deposition table (1) for a palletizing device (100), in particular for palletizing sacks, comprising at least one deposition device (2), at least one displacement device (3), and at least one air supply device (4), wherein the deposition device (2) is configured to be movable by the displacement device (3) at least between a closed position (5) and an open position (6), an upper side (7) of the deposition device (2) comprises at least one deposition surface (8) for receiving at least one sack layer (200), the deposition device (2) is configured such that air can flow through it at least partially, at least one air supply opening (10) is provided on a lower side (9) of the deposition device (2), the deposition surface (8) has at least one air discharge opening (11), the air supply device (4) comprises at least one air guiding element (12) having at least one air outlet opening (13) and at least one connecting device (14), in the deposition table (1), the connecting device (14) is arranged between the air outlet opening (13) of the air guiding element (12) and the air supply opening (10) of the deposition device (2), the deposition table (1) is characterized in that the connecting device (14) is preferably configured to achieve a length compensation in a substantially same plane between the air outlet opening (13) and the air supply opening (10) when the deposition device (2) is moved.

2. The deposition table (1) according to claim 1, wherein the connecting device is configured to be at least partially telescopic.

3. The deposition table (1) according to claim 1, wherein the air guiding element (12) is stationary.

4. The deposition table (1) according to claim 1, wherein the connecting device (14) lies in a plane substantially parallel to the deposition device.

5. The deposition table (1) according to claim 1, wherein the connecting device (14) is rotatably connected to the air outlet opening (13) of the air inlet element (12) and / or the air supply opening (10) of the deposition device (2) by means of at least one pneumatic rotary feed-through (15) in any case.

6. The deposition table (1) according to claim 1, wherein the connecting device (14) is arranged substantially transversely to the moving direction (18) of the deposition device (2).

7. The air outlet opening (13) of the air guiding element (12) is substantially equally spaced from the air supply opening (12) in the closed position (5) and the open position (6) of the deposition device (2), the deposition table (1) according to claim 1.

8. The connecting device (13) has a substantially maximum extension when the deposition device (2) is in the closed position (4) and / or the open position (5), the deposition table (1) according to claim 1.

9. The connecting device (14) has a substantially minimum extension when the deposition device (2) is between the closed position (4) and the open position (5), the deposition table (1) according to claim 1.

10. The connecting device (14) comprises at least one pipe-in-pipe system (19), the deposition table (1) according to claim 1.

11. The pipes (20) of the pipe-in-pipe system (19) are not connected to each other in a liquid-tight manner, the deposition table (1) according to claim 1.

12. The connecting device (14) comprises at least one bellows, the deposition table (1) according to claim 1.

13. The connecting device (14) comprises at least one carrier device connected in an articulated manner, the deposition table (1) according to claim 1.

14. At least one blower device (16) is connected to at least one air inlet (17) of the air guiding element (12), the deposition table (1) according to claim 1.

15. A palletizing device (100) for palletizing small pieces (300), in particular sacks (201), comprising at least one conveying device (101) having at least one conveying element (102) for conveying the small pieces (300) and at least one deposition table (1) according to claim 1.

16. The deposition device (2) of the deposition table (1) can be at least partially displaced between the upper running part (103) and the lower running part (104) of the at least one conveying element (102), the palletizing device (100) according to claim 15.

17. The connection device (14) is the paratizing device (100) according to claim 15 or 16, which is at least partially disposed between the upper traveling part (103) and the lower traveling part (104) in a plane parallel to the upper traveling part (103) and / or the lower traveling part (104).

18. The air guiding element (12) is the paratizing device (100) according to claim 15 or 16, which is at least partially disposed between the upper traveling part (103) and the lower traveling part (104) in a plane parallel to the upper traveling part (103) and / or the lower traveling part (104).

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