Depositing table
Patent Information
- Application Number
- EP2023750578
- Authority / Receiving Office
- EP · EP
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2022-08-02
- Filing Date
- 2023-07-26
- Publication Date
- 2025-06-11
AI Technical Summary
Existing palletizing systems require significant installation space and are prone to collisions and wear due to long air hoses used to create an air cushion for easy bag removal, which can lead to bag deformation and poor stacking.
A storage table with a movable depositing device that allows air to flow through, using a telescopic connecting device and blower to create an air cushion without the need for large air hoses, ensuring a flat design and minimizing the risk of collisions with conveyor elements.
The solution enables easy bag removal without deformation, reduces installation space requirements, and minimizes wear, ensuring reliable operation and improved stacking quality.
Smart Images
Figure 1.1
Abstract
Description
[0001] Storage table
[0002] Description
[0003] The present invention relates to a depositing table, in particular for a palletizing device for palletizing bags. Depending on the design, at least one layer of bags can be formed on such a depositing table and then pushed onto a pallet or the like. For this purpose, the depositing table comprises at least one depositing device, at least one displacement device and at least one air supply device, wherein the depositing device is designed to be movable by means of the displacement device at least between a closed position and an open position. An upper side of the depositing device comprises at least one depositing surface for receiving at least one layer of bags, wherein the depositing device is designed to allow air to flow through at least some sections of the depositing device.For this purpose, at least one air supply opening is provided on an underside of the depositing device and the depositing surface has at least one air discharge opening, wherein the air supply device comprises at least one air guide element with 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 guide element and the air supply opening of the depositing device. The present invention also relates to a palletizing device for palletizing piece goods, in particular sacks or filled sacks, in particular sacks filled with bulk material, comprising at least one conveying device with at least one conveying element for conveying piece goods and at least one such depositing table.
[0004] For example, a palletizer is often installed downstream of packing systems for filling bulk goods into bags. This system stacks the filled bags in specific layers on pallets. This ensures optimal onward transport of the filled bags or, depending on the system, other general cargo.
[0005] To palletize filled bags, a specific layer of bags consisting of a specific number of bags is arranged in a specific order on a so-called lay-down table and then placed on a pallet underneath, e.g. by pulling the lay-down table away.
[0006] To prevent the bags from deforming during pushing off and to generally facilitate pushing off, known palletizers, depending on their design, generate an air flow between the deposit table and the bags to facilitate pushing off or sliding of the bags from the support surface.
[0007] For this purpose, depending on the design, air is introduced into the at least partially hollow deposit table, which exits through openings in the support surface and thus forms a kind of air cushion under the layer of bags.
[0008] To introduce air into the discharge table, conventional palletizers feature an air hose, which is attached to the discharge table in a so-called monkey swing style. This compensates for the necessary length difference and / or angular misalignment when the discharge table moves back and forth or when a layer of bags is pushed onto a pallet.
[0009] A disadvantage of such designs, however, is that the monkey swing requires a relatively large installation space. Furthermore, care must be taken to ensure that the hose does not collide with the conveyor element that transports the bags to the deposit table when moving back and forth. This could interrupt the operation of the palletizer or even cause damage. Furthermore, the sometimes quite long travel distances lead to relatively rapid wear of the air hoses.
[0010] It is therefore the object of the present invention to provide a deposit table in which the pushing off of the bag layer is facilitated by a type of air cushion under the bags, whereby the constructional effort required for this requires as little space as possible and reliable operation is guaranteed.
[0011] This object is achieved by a storage table having the features of claim 1 and by a palletizing device having the features of claim 15. Preferred developments of the invention are the subject of the subclaims. Further advantages and features of the present invention will become apparent from the general description and the description of the exemplary embodiment.
[0012] The storage table according to the invention can be used in particular for a palletizing device or in a palletizing device for palletizing bags and comprises at least one depositing device, at least one displacement device and at least one air supply device. The depositing device is designed to be movable by means of the displacement device at least between a closed position and an open position. Furthermore, an upper side of the depositing device comprises at least one depositing surface for receiving at least one layer of bags, wherein the depositing device is designed to be at least partially through which air can flow. At least one air supply opening is provided on an underside of the depositing device and the depositing surface has at least one air discharge opening.The air supply device comprises at least one air guide element with at least one air outlet opening and at least one connecting device, wherein the connecting device is arranged between the air outlet opening of the air guide element and the air supply opening of the depositing device. The connecting device is suitable and designed to effect a substantially level length compensation between the air outlet opening (13) and the air supply opening (10) when the depositing device (2) is moved.
[0013] The air supply device can in particular produce a type of air cushion under the bags arranged on the depositing device to reduce the coefficient of friction, so that there is no deformation of bags when the depositing device is pulled away or opened.
[0014] For this purpose, the depositing table or depositing device is ventilated from the inside. This ventilation, in particular, does not generate any significant pressure. In particular, a simple fan can be used.
[0015] In order to make the laying device movable, the displacement device comprises in particular at least one rail system, on which the plate or the laying device can be moved, for example by means of a belt drive.
[0016] In particular, a plurality of air discharge openings are provided in the laying device or in the surface in order to provide air for producing an air cushion, in particular over a large part and in particular over the entire surface of the laying table or the laying device.
[0017] In the closed position of the laying device, preferably at least one pallet can be arranged below the laying table or below the laying device, onto which pallet the layer of bags arranged on the laying device is placed or pushed off when the laying device is opened.
[0018] Thus, the closed or extended position of the depositing device is the position in which the pallet is concealed beneath the depositing table. In this position, a layer of bags rests on the depositing device. The open position is the position in which the depositing device is retracted or retracted, releasing the pallet beneath the depositing table so that the bags can be pushed onto the pallet.
[0019] The inventive deposit table offers many advantages. A significant advantage is that, to reduce friction, a type of air cushion can be provided for easily pushing a load of bags off, preventing them from deforming when pushed onto a pallet or the like.
[0020] The inventive design makes this possible with a very flat construction, so that the remaining assembly space is not disrupted. No conventional air hoses are required, which are otherwise provided in the style of a so-called monkey swing to enable longer travel distances. Such longer travel distances would otherwise often result in significant wear and tear and also in collisions, for example with the lower run of the conveyor system which conveys the bags to the deposit table. In this way, the deposit table in particular can be moved between the upper and lower runs of the conveyor element, which enables a low transfer height from the conveyor system to the deposit table. Depending on the design, a large height offset at this point leads to deformation of the bags during transfer and, as a result, to a poorer stacking pattern on the pallet.
[0021] Preferably, the connecting device is designed to be telescopic, at least in sections. In this case, "telescopic" or "telescopic" is understood in particular to mean that a length adjustment occurs between the air outlet opening and the air supply opening when the laying device is moved.
[0022] Preferably, the air guide element is provided in a fixed location. This allows for secure and stable installation of the air guide element and also allows for a very flat design.
[0023] Particularly preferably, the connecting device is arranged substantially in a plane parallel to the depositing device. In particular, the connecting device is arranged substantially parallel to the depositing surface or to the parallel underside.
[0024] Preferably, the connecting device is designed to be substantially rigid, so that in particular it does not sag or is not provided in the manner of a so-called monkey swing.
[0025] In advantageous embodiments, the connecting device is rotatably connected to the air outlet opening of the air inlet element and / or the air supply opening of the depositing device, in particular by means of at least one pneumatic rotary feedthrough. This enables the depositing device to be relocated despite the use of rigid components, since the connection of the connecting device is rotatable and the connecting device itself is essentially telescopic.
[0026] In preferred embodiments, the connecting device is arranged substantially transversely to the direction of travel of the depositing device. Preferably, the connecting device is arranged transversely or substantially transversely to the direction of travel of the depositing device at least in one position of the depositing device.
[0027] Alternatively, in appropriate further developments, a rotary union can be omitted if the connecting device is arranged longitudinally in the direction of travel. Depending on the design, this then requires a larger stroke of the device compared to the transverse orientation.
[0028] Preferably, the air outlet opening of the air guiding element is arranged at a substantially equal distance from the air supply opening in the closed position and the open position of the laying device.
[0029] Particularly preferably, the connecting device has a substantially maximum extension when the storage device is in the closed position and / or the open position.
[0030] In expedient developments, the connecting device has a substantially minimal extension when the storage device is between the closed position and the open position, i.e. in particular in a middle position. It is particularly provided that, for example, when using a telescopic tube as a connecting device, this tube is retracted in the middle position and is extended or telescoped to the end points or the open and closed positions. This minimizes the distance to be telescoped and thus reduces wear.
[0031] The telescopic connecting device preferably comprises at least one pipe-in-pipe system. For example, a pipe-in-pipe system can be implemented with, for example, 120 mm pipes or the like. Preferably, the pipes of the pipe-in-pipe system are not (absolutely) fluid-tightly connected to one another. In particular, it can be provided that a deliberate leakage is provided or no seals are used, so that any dust or particles present are carried away by the leakage air. At the same time, such an air flow resulting from the leakage creates a wear-reducing air cushion.
[0032] In advantageous embodiments, the telescopic connecting device comprises at least one bellows. Such a configuration can also provide a telescopic connecting device in addition to a pipe-in-pipe system or even exclusively, provided that this bellows is sufficiently rigid so that it does not sag, or only slightly sags. A bellows can preferably also be provided as a protective element.
[0033] The telescopic connecting device preferably comprises at least one articulated support device. For example, it is also possible to provide V-shaped struts as a support for hoses. This V-shaped configuration then preferably lies in a plane parallel to the support device and folds out toward the end positions, thus also providing a telescopic connecting device.
[0034] In expedient developments, at least one blower device is connected to at least one air inlet of the air guiding element. This blower device can preferably provide a sufficient air flow to generate the air cushion effect.
[0035] The palletizing device according to the invention for palletizing piece goods, in particular bags (in particular bags filled with bulk material), comprises at least one conveying device with at least one conveying element for conveying piece goods and at least one storage table, as previously described.
[0036] The palletizing device according to the invention also includes the advantages which have already been explained in relation to the storage table according to the invention.
[0037] Preferably, the depositing device of the depositing table is displaceable, at least in sections, between the upper run and lower run of at least one conveying element of the conveying device. Because the depositing device is displaceable between the upper run and lower run, a particularly flat design can be realized.
[0038] In advantageous further developments, the connecting device is arranged, at least in sections, in a plane parallel to the upper run and / or the lower run between the upper run and the lower run. Because the connecting device is also arranged between the upper run and the lower run of the conveying element, a particularly flat-brown design can be achieved without any collision of components with conveying elements.
[0039] In expedient further developments, the air guiding element is arranged or can be arranged, at least in sections, in a plane parallel to the upper run and / or the lower run between the upper run and / or the lower run. The same advantage applies here as already explained, namely, that a particularly flat design is possible.
[0040] Further advantages and features of the present invention will become apparent from the exemplary embodiment which is explained below with reference to the accompanying figures.
[0041] The figures show: Fig. 1 a purely schematic representation of an embodiment of a palletizing device according to the invention in a perspective view;
[0042] Fig. 2 two purely schematic representations of an embodiment of a depositing table of the palletizing device according to Figure 1 in a view from above with the depositing device in different positions;
[0043] Fig. 3 is a purely schematic representation of an embodiment of a deposit table according to the invention in a perspective view from above with the deposit device in the closed position;
[0044] Fig. 4 is a purely schematic representation of an embodiment of a deposit table according to the invention in a perspective view;
[0045] Fig. 5 is a purely schematic representation of an embodiment of a deposit table according to the invention in a sectional view from the side;
[0046] Fig. 6 is a purely schematic representation of an embodiment of a depositing table according to the invention in a perspective view from above with the depositing device in the middle position;
[0047] Fig. 7 is a purely schematic representation of an embodiment of a deposit table according to the invention in a perspective view from above with the deposit device in the open position;
[0048] Fig. 8 is a purely schematic representation of an embodiment of a depositing table according to the invention without a depositing device in a perspective view from above with the depositing device in the closed position;
[0049] Fig. 9 is a purely schematic representation of an embodiment of a depositing table according to the invention without a depositing device in a perspective view from above with the depositing device in the middle position;
[0050] Fig. 10 is a purely schematic representation of an embodiment of a depositing table according to the invention without a depositing device in a perspective view from above with the depositing device in the open position;
[0051] Fig. 11 is a purely schematic representation of an embodiment of a depositing table according to the invention without a depositing device in a perspective view from below with the depositing device in the open position;
[0052] Fig. 12 is a purely schematic representation of an embodiment of a depositing table according to the invention without a depositing device in a perspective view from below with the depositing device in the middle position; and
[0053] Fig. 13 is a purely schematic representation of an embodiment of a depositing table according to the invention without a depositing device in a perspective view from below with the depositing device in the closed position.
[0054] Figure 1 shows, purely schematically, an embodiment of a palletizing device 100 according to the invention with a deposit table 1 according to the invention in a perspective view from above. The palletizing device 100 shown here is intended for arranging bags 201 filled with bulk material in a predetermined layer pattern on pallets or for palletizing the bags. For this purpose, the palletizing device 100 comprises a bag inlet 105, which receives the bags filled by a packing system 400 (not shown in detail).
[0055] A smoothing device 106 is arranged downstream of the bag inlet 105, which adjusts the height of the filled bags 201 or the piece goods 300 to be packaged, so that the bags 201 can be stacked particularly well.
[0056] In the embodiment shown, three gripping and rotating devices 107 are arranged downstream of the smoothing device 106, which orient the bags 201 or piece goods 300 to be stacked, so that a specific layer pattern with correspondingly oriented bags 201 can be produced on the deposit table 1 or on an intermediate storage area.
[0057] To convey the bags 201 or piece goods 300, a conveyor device 101 with a conveyor element 102 is used, which ends here next to the deposit table 1. The bags 201 can then be pushed or transported by the conveyor element onto the deposit table 1.
[0058] Figure 2 shows two views of the area of the palletizing device 100 according to the invention with a depositing table 1 according to the invention, wherein in the left-hand illustration the depositing table or the depositing device 2 is shown in the open position 6 and wherein in the right-hand illustration the closed position 5 of the depositing device 2 is shown purely schematically.
[0059] Next to the palletizing device 100, a pallet with stacked bags 201 or stacked piece goods can be seen. It can be seen here that in the exemplary embodiment shown here, the topmost bag layer 200 has a layer pattern in which two bags are aligned lengthwise and three bags are aligned crosswise. Accordingly, the bag layer 200 below is oriented exactly the other way round to enable particularly stable stacking of bags.
[0060] When palletizing the bags 201, a layer of bags 200 is first formed on the depositing table 1 or on the depositing device 2. When the layer of bags 200 is formed, the depositing device 2 is moved to the closed position 5, in which it is located above a pallet onto which the bags 201 are later to be pushed.
[0061] If the bag layer 200 is in the correct position, the depositing device 2 is pulled away, whereby the bag layer 200 is pushed onto a pallet located below or a bag layer 200 already arranged on the pallet.
[0062] Figure 3 shows a purely schematic perspective view of a depositing table 1 according to the invention. Here, it can be seen that the depositing table 1 comprises a depositing device 2, which has a depositing surface 8 on which bags 201 can be arranged to form a bag layer 200.
[0063] The laying device 2 is designed to be hollow or through which air can flow, at least in sections, so that air can be blown out via air discharge openings 11 in the upper side 7 of the laying device 2 or the laying surface 8, whereby a type of air cushion is created below the bag layer 200, which facilitates pushing it onto a pallet below the laying table 1 or the laying device 2.
[0064] In order to supply the laying device 2 or the air discharge openings 11 with air, according to the invention the laying table 1 comprises an air supply device 4. In the embodiment shown here, the air supply device 4 has an air guide element 12 which comprises an air inlet 17 which is connected here to a blower device 16.
[0065] The air flow provided by the blower device 16 is fed via a pipe to the air inlet 17 of the air guide element 12. The air flow is then guided via the air guide element 12 to an air outlet opening 13, which is connected to the connecting device 14. The connecting device 14 is provided here by tubes 20 which telescopically interlock. By means of such a tube-in-tube system 19, the connecting device 14 can be changed in length or telescoped.
[0066] 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 a pneumatic rotary union 15. On the other side, a rotatable connection, here also designed as a pneumatic rotary union 15, is also provided, which is connected to the air supply opening 10 on the underside 9 of the laying device 2.
[0067] Figure 4 shows the depositing table 1 shown in Figure 3, the depositing surface 8 not being shown here so that the interior of the depositing device 2 and thus also the air supply opening 10 of the depositing device 2 can be seen.
[0068] Figure 5 shows a sectional side view of the depositing table according to the invention, as shown in the previously shown figures. In the exemplary embodiment shown here, the depositing device 2 is in the open position 6, in which the depositing device 2 is at least partially located between the upper run 103 and the lower run 104 of the conveying element 102 of the conveying device 101 of the palletizing device 100.
[0069] This is a significant advantage of the present invention, since the special design of the air supply device 4 enables a particularly flat design, so that the depositing device 2 can be relocated without any risk of collision with the conveying element 102 of the conveying device 101.
[0070] This results, among other things, from the fact that the connecting device 14 is provided in a plane parallel to the depositing device 2 and as flat as possible below the depositing device 2. Because the connecting device is held or arranged in this plane independently of the position of the depositing device 2, installation is possible in the smallest possible installation space. In particular, the depositing device 2 can also be moved with the connecting device 14 between the upper run 103 and the lower run 104.
[0071] Figures 6 and 7 show an embodiment of a storage table according to the invention, once in the open position 6 and once in a central position 21. The fully closed position 5 of this embodiment has already been shown in Figure 3.
[0072] Figures 8 to 10 show, purely schematically, an embodiment of a depositing table 1 according to the invention without a depositing device 2. Here, it can be seen that the displaceability or movability of the depositing device 2 is achieved by a displacement device 3, which is provided here by a rail system 22.
[0073] Figure 8 shows the fully closed position 5, Figure 9 a middle position 21 and Figure 10 the fully open position 6.
[0074] In these illustrations, it can be seen that the connection of the air supply device 4 to the depositing device 2 is made possible by a telescopic connecting device 14. A rigid or stationary air guide element 12 is provided here, to which the connecting device 14 is connected.
[0075] In this case, a minimally extended or telescoped pipe-in-pipe system 19 is provided when the laying device 2 is in the middle position 21. This makes it possible for the connecting device 14 or the pipe-in-pipe system 19 to be extended to the two end positions, namely the open position 6 and the closed position 5. Thus, the connecting device 14 in the middle position 21 is approximately transverse to the direction of travel 18.
[0076] By providing a pipe-in-pipe system 19 with a substantially rigid connection, it is possible to enable a particularly flat connection of the air supply device 4 to the depositing device 2. This also makes it possible for the depositing device 2 to be moved between the upper run 103 and lower run 104 of the conveying element 102 or the conveying device 101 without having to fear a collision, as would or could otherwise occur when using air hoses when using a so-called monkey swing.
[0077] Figures 11 to 13 show the open position 6, the middle position 21, and the closed position 5 of the storage device 2 from below. Here, too, the different deflections of the telescopic connecting device 14 can be seen.
[0078] Depending on the design, a pipe-in-pipe system 19 consisting of at least two pipes 20 can be used as the connecting line 14 in the exemplary embodiment shown here. Special sealing of this system is not necessary and, depending on the design, is not even desired. For example, a certain amount of leakage can ensure that dust penetrating the connecting device 14 is blown out again. Furthermore, an absolutely tight system is not necessary since no particularly high pressures are required to create the air cushion beneath the bag layer 200. In particular, the air flow between the pipe parts forms a wear-reducing air cushion during the process.
[0079] Depending on the design, a different type of connecting device 14 may also be provided. In addition to a pipe-in-pipe system 19, a type of bellows may also be used, or hoses may also be used, which are held in a support structure that can be moved in a corresponding plane, e.g., a V-shaped structure.
[0080] List of reference symbols
[0081] 1 storage table
[0082] 2 depositing device
[0083] 3 Relocation facility
[0084] 4 Air supply device
[0085] 5 closed position
[0086] 6 open position
[0087] 7 Top
[0088] 8 Abi ege area
[0089] 9 Bottom
[0090] 10 Air supply opening
[0091] 11 Air vent
[0092] 12 Air guide element
[0093] 13 Air outlet opening
[0094] 14 Connecting device
[0095] 15 Pneumatic rotary union
[0096] 16 Blower device
[0097] 17 Air inlets
[0098] 18 Direction of travel
[0099] 19 Pipe-in-pipe system
[0100] 20 pipe
[0101] 21 middle position
[0102] 22 Rail system
[0103] 100 palletizing device
[0104] 101 Conveyor system
[0105] 102 For the element
[0106] 103 Upper Drum
[0107] 104 Lower strand
[0108] 105 Bag inlet
[0109] 106 Smoothing device
[0110] 107 Gripping and rotating device
[0111] 200 sack layers
[0112] 201 bags
[0113] 300 general cargo
[0114] 400 packing system
Claims
Claims:
1. A depositing table (1), in particular for a palletizing device (100) for palletizing bags, comprising at least one depositing device (2), at least one displacement device (3) and at least one air supply device (4), wherein the depositing device (2) is designed to be movable by means of the displacement device (3) at least between a closed position (5) and an open position (6), wherein an upper side (7) of the depositing device (2) comprises at least one depositing surface (8) for receiving at least one layer of bags (200), wherein the depositing device (2) is designed to be at least partially permeable by air, and wherein at least one air supply opening (10) is provided on an underside (9) of the depositing device (2), and wherein the depositing surface (8) has at least one air discharge opening (11),and wherein the air supply device (4) comprises at least one air guiding element (12) with at least one air outlet opening (13) and at least one connecting device (14), wherein 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 depositing device (2), characterized in that the connecting device (14) is suitable and designed to effect a substantially level length compensation between the air outlet opening (13) and the air supply opening (10) when the depositing device (2) is moved., Deposit table (1) according to claim 1, wherein the connecting device is designed to be telescopic at least in sections. Deposit table (1) according to one of the preceding claims, wherein the air guiding element (12) is stationary. Deposit table (1) according to one of the preceding claims, wherein the connecting device (14) is substantially in a plane parallel to the deposit device. Deposit table (1) according to one of the preceding claims, wherein the connecting device (14) is rotatably connected to the air outlet opening (13) of the air guiding element (12) and / or the air supply opening (10) of the deposit device (2), in particular in each case by means of at least one pneumatic rotary feedthrough (15). Deposit table (1) according to one of the preceding claims, wherein the connecting device (14) is arranged substantially transversely to the direction of travel (18) of the deposit device (2).Storage table (1) according to one of the preceding claims, wherein the air outlet opening (13) of the air guiding element (12) is arranged at a substantially equal distance from the air supply opening (12) in the closed position (5) and the open position (6) of the storage device (2). Storage table (1) according to one of the preceding claims, wherein the connecting device (13) has a substantially maximum extension when the storage device (2) is in the closed position (4) and / or the open position (5). Storage table (1) according to one of the preceding claims, wherein the connecting device (14) has a substantially. has minimal extension when the storage device (2) is between the closed position (4) and the open position (5). Storage table (1) according to one of the preceding claims, wherein the connecting device (14) comprises at least one pipe-in-pipe system (19). Storage table (1) according to the preceding claim, wherein the pipes (20) of the pipe-in-pipe system (19) are not connected to one another in a fluid-tight manner. Storage table (1) according to one of the preceding claims, wherein the connecting device (14) comprises at least one bellows. Storage table (1) according to one of the preceding claims, wherein the connecting device (14) comprises at least one articulated support device. Storage table (1) according to one of the preceding claims, wherein at least one blower device (16) is connected to at least one air inlet (17) of the air guide element (12).Palletizing device (100) for palletizing piece goods (300), in particular bags (201), comprising at least one conveyor device (101) with at least one conveyor element (102) for conveying piece goods (300) and at least one depositing table (1) according to one of the preceding claims. Palletizing device (100) according to the preceding claim, wherein the depositing device (2) of the depositing table (1) is displaceable at least in sections between the upper run (103) and lower run (104) of the at least one conveyor element (102). Palletizing device (100) according to one of the two preceding claims, wherein the connecting device (14) is arranged at least in sections in a plane parallel to the upper run (103) and / or the lower run (104) between the upper run (103) and the lower run (104). Palletizing device (100) according to one of the three preceding claims, wherein the air guiding element (12) is arranged at least in sections in a plane parallel to the upper run (103) and / or the lower run (14) between the upper run (103) and the lower run (104).