Multi-module collaborative tray stacker-unstacker system

Abstract

The present application relates to tray stacking and unstacking technical field, specifically, it relates to multi-module cooperative tray stacking and unstacking machine system.It includes movable assembly, limiting assembly, movable side clamping block, fixed side clamping block and top plate.The present application is contacted with tray clamping groove in advance and clamped and fixed through top plate, the interval width between movable side clamping block and fixed side clamping block is adjusted through top plate and movable assembly during clamping process, both movable side clamping block and fixed side clamping block can be smoothly clamped into inner end of clamping groove in initial clamping process, position correction time is reduced, the interval length between movable side clamping block and fixed side clamping block is increased through movable assembly during the process that two top rods exert clamping force on clamping groove, movable side clamping block and fixed side clamping block are respectively contacted with inner wall of both sides of clamping groove, clamping plate is aligned with middle position of tray side, the gravity difference of both sides of clamping plate is reduced, so that the stability during transfer process is improved, and shaking, overturning and tilting and other conditions are prevented.

Description

Technical Field

[0001] This invention relates to the field of pallet stacking and destabilizing technology, and more specifically, to a multi-module collaborative pallet stacking and destabilizing machine system. Background Technology

[0002] Pallet stacker / destacking machines are specifically used in the field of modern logistics warehousing. Pallets are an important tool for carrying and transferring goods. Through lifting and handling operations, they accomplish the tasks of stacking and transferring goods.

[0003] During pallet transfer, pallets need to be stacked and disassembled in advance. Traditional palletizing equipment mainly uses clamping plates and lifting platforms to clamp and transfer pallets. The clamping plates clamp the inner end of the groove on the side of the pallet, using clamping force to fix the pallet. However, due to the limited width of the clamping plates, the contact area with the inner end of the groove is small. If the clamping plate is located near the middle of the groove, the difference in weight of the pallet on both sides of the clamping plate is small, and the clamping stability is high. However, in this case, the operator needs to make long-term position adjustments to make the clamping plate as aligned as possible with the middle of the groove, which reduces the clamping efficiency. If the clamping position is controlled arbitrarily, it will cause the weight imbalance on both sides of the clamping plate, which can easily cause the pallet to tilt or flip during transfer, affecting the subsequent stacking effect.

[0004] To address the aforementioned issues, there is an urgent need for a multi-module collaborative pallet stacking and unloading system capable of automatically correcting clamping positions. Summary of the Invention

[0005] The purpose of this invention is to provide a multi-module collaborative pallet stacking and unloading system. The top plate contacts the pallet clamping groove in advance and clamps and fixes it. During the clamping process, the top plate, together with the movable component, adjusts the gap width between the movable side clamping block and the fixed side clamping block. This ensures that the movable side clamping block and the fixed side clamping block can be smoothly inserted into the inner end of the clamping groove in the initial clamping stage, reducing the position correction time. Simultaneously, during the process of applying clamping force to the clamping groove by the two push rods, the gap length formed between the movable side clamping block and the fixed side clamping block is increased in conjunction with the movable component. This ensures that the movable side clamping block and the fixed side clamping block are in close contact with the inner walls of both sides of the clamping groove, so that the clamping plate is aligned with the middle position of the side of the pallet, reducing the difference in the weight of the pallet on both sides of the clamping plate, thereby solving the problem mentioned in the background art, namely: Precisely adjusting the clamping plate to achieve stable clamping takes a long time, and arbitrarily controlling the clamping position can cause an imbalance of gravity on both sides of the clamping plate.

[0006] To achieve the above objectives, a multi-module collaborative pallet stacking and unloading system is provided, including a pair of clamping arms, an adjustment frame for adjusting the position of the clamping arms, and a clamping plate disposed at the bottom end of the clamping arms. The clamping plate has a side groove on its side, and a top plate is slidably disposed at the middle position of the inner end of the side groove. A fixed side clamping block is fixedly disposed on one side of the side groove, and a movable side clamping block is slidably disposed on the other side of the side groove. An elastic component connects the movable side clamping block to the inner end of the side groove.

[0007] A movable component is provided between one end of the top plate and the movable side clamping block, and a limiting component is provided between the top plate and the inner end of the side groove. When the top plate is not under force, a gap is formed between its end and the movable component under the action of the limiting component. The movable component, in conjunction with the action of the movable component, overcomes the force applied to the movable side clamping block by the elastic component, causing the movable side clamping block to slide closer to the top plate and remain in a fixed state. When the top plate contacts the pallet clamping area, the reaction force provided by the pallet drives the top plate to contact the movable component, and in conjunction with the elastic component, drives the movable side clamping block to move, correcting the pallet clamping position.

[0008] Compared with the prior art, the beneficial effects of the present invention are as follows: In this multi-module collaborative pallet stacking and unloading system, the top plate contacts and clamps the pallet in advance. During clamping, the top plate, in conjunction with the movable component, adjusts the gap between the movable and fixed clamping blocks. This ensures that the movable and fixed clamping blocks can smoothly engage in the inner end of the clamping slot in the initial clamping stage, reducing position correction time. At the same time, as the two top rods apply clamping force to the clamping slot, the movable component increases the gap between the movable and fixed clamping blocks, ensuring that the movable and fixed clamping blocks are in close contact with the inner walls of the clamping slot on both sides. This aligns the clamping plate with the middle of the pallet side, reducing the difference in gravity of the pallet on both sides of the clamping plate, thereby improving stability during transfer and preventing shaking, overturning, and tilting. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram showing the connection between the clamping arm and the clamping plate of the present invention; Figure 3 This is a schematic diagram of the clamping plate structure of the present invention; Figure 4 This is one of the cross-sectional views of the clamping plate structure of the present invention; Figure 5 This is a second cross-sectional view of the clamping plate structure of the present invention; Figure 6 This is one of the schematic diagrams of the movable side clamping block position adjustment plane of the present invention; Figure 7This is a second schematic diagram of the planar adjustment of the position of the movable side clamping block of the present invention.

[0010] The meanings of the labels in the diagram are as follows: 10. Adjustment frame; 20. Clamping arm; 30. Clamping plate; 310. Top plate; 311. Pulley; 312. Wedge block; 313. Side wheel; 314. Return spring; 320. Support plate; 321. Support roller; 330. Fixed side clamping block; 340. Movable side clamping block; 350. Limiting block; 360. Movable block; 361. Connecting outer frame; 362. Limiting spring; 370. Fixing plate. Detailed Implementation

[0011] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0012] Please see Figure 1-2 As shown, a multi-module collaborative pallet stacking and unloading system is provided: It includes a pair of clamping arms 20, an adjustment frame 10 for adjusting the position of the clamping arms 20, and a clamping plate 30 disposed at the bottom of the clamping arms 20. The clamping plate 30 has a side groove on its side, and a top plate 310 is slidably disposed at the middle position of the inner end of the side groove. A fixed side clamping block 330 is fixedly disposed on one side of the side groove, and a movable side clamping block 340 is slidably disposed on the other side of the side groove. An elastic component is connected between the movable side clamping block 340 and the inner end of the side groove. A movable component is provided between one end of the top plate 310 and the movable side clamping block 340, and a limiting component is provided between the top plate 310 and the inner end of the side groove. When the top plate 310 is not under force, under the action of the limiting component, a gap is formed between its end and the movable component. With the action of the movable component, the force exerted by the elastic component on the movable side clamping block 340 is overcome, causing the movable side clamping block 340 to slide closer to the top plate 310 and remain in a fixed state. When the top plate 310 contacts the pallet clamping area, the reaction force provided by the pallet drives the top plate 310 to contact the movable component, and in conjunction with the elastic component, drives the movable side clamping block 340 to move, correcting the pallet clamping position.

[0013] In practical applications, pallets serve as an important tool for carrying and transferring goods in the field of modern logistics and warehousing. Through lifting and handling operations, they are used to stack and move goods.

[0014] During pallet transfer, pallets need to be stacked and disassembled in advance. Traditional palletizing equipment mainly uses clamping plates and lifting platforms to clamp and transfer pallets. The clamping plates clamp the inner end of the groove on the side of the pallet, using clamping force to fix the pallet. However, due to the limited width of the clamping plates, the contact area with the inner end of the groove is small. If the clamping plate is located near the middle of the groove, the difference in weight of the pallet on both sides of the clamping plate is small, and the clamping stability is high. However, in this case, the operator needs to make long-term position adjustments to make the clamping plate as aligned as possible with the middle of the groove, which reduces the clamping efficiency. If the clamping position is controlled arbitrarily, it will cause the weight imbalance on both sides of the clamping plate, which can easily cause the pallet to tilt or flip during transfer, affecting the subsequent stacking effect.

[0015] To address the aforementioned problems, this invention provides a multi-module collaborative pallet stacking and unloading system capable of automatically correcting clamping positions, the details of which are as follows: like Figure 1 As shown, clamping slots are provided on both sides of the pallet for clamping. During clamping, the top plate 310, fixed side clamping block 330, and movable side clamping block 340 are used to clamp and fix the pallet. First, the two clamping arms 20 are adjusted using the adjustment frame 10 so that the side slots on the side of the clamping plate 30 are aligned with the clamping slots on the side of the pallet. It is worth noting that this alignment only requires keeping the opening of the side slot as close as possible to the opening of the clamping slot, ensuring that the top plate 310, fixed side clamping block 330, and movable side clamping block 340 can smoothly extend into the inner end of the clamping slot. It does not need to be completely aligned. Since the length of the top plate 310 extending into the inner end of the side slot is longer than that of the fixed side clamping block 330 and the movable side clamping block 340, during the contact between the movable clamping plate 30 and the pallet, the end of the top plate 310 will contact the inner wall of the side slot in advance and apply pressure to the pallet, pre-fixing the pallet. Figure 3-4 As shown, the top plate 310 and the side groove maintain a sliding connection. The inner end of the top plate 310 is a hollow structure, and a fixed plate 370 is fixedly installed at the inner end of the side groove. The movable side clamping block 340 slides along the outer side of the fixed plate 370. When not in contact with the tray, a gap is reserved between the end of the top plate 310 and the movable component. The movable component includes a limiting block 350, a connecting frame 361, a movable block 360, and a wedge block 312. The wedge block 312 is fixedly installed at the end of the top plate 310. The limiting block 350 and the movable block 360 are engaged. A limiting spring 362 is connected between the engagement positions of the limiting block 350 and the movable block 360. Under the action of the limiting spring 362, the limiting block 350 and the movable block 360 are kept close to each other, and a wedge-shaped gap is formed at their ends. Figure 6As shown, one end of the connecting frame 361 is connected to the movable locking block 360 on the side away from the limiting locking block 350, and the other end is in contact with the side of the movable side clamping block 340. Overcoming the force of the elastic component, it moves the movable side clamping block 340 closer to the top plate 310, thus shortening the distance between the movable side clamping block 340 and the fixed side clamping block 330. This allows the movable side clamping block 340 and the fixed side clamping block 330 to more easily extend into the clamping groove. The elastic component in this design can be a spring or a spring sheet, etc. The structure is designed such that the elastic force exerted by the limiting spring 362 on the movable block 360 is much greater than the elastic force exerted by the elastic component on the movable side clamping block 340. In other words, if the top plate 310 is not inserted into the inner end of the wedge-shaped gap, the elastic force exerted by the limiting spring 362 on the movable block 360 is sufficient to drive the limiting block 350 and the movable block 360 closer to each other and overcome the elastic force exerted by the elastic component on the movable side clamping block 340. In conjunction with the connecting frame 361, the movable side clamping block 340 is fixed at a position close to the top plate 310.

[0016] Since the two top plates 310 are located on both sides of the tray and are simultaneously clamped by the clamping grooves on both sides, the clamping grooves will provide a reaction force to the top plates 310, causing the top plates 310 to move closer to the wedge-shaped gap until the end of the wedge block 312 gradually extends into the inner end of the wedge-shaped gap. Figure 7 As shown, at this time, the two sides of the wedge block 312 apply horizontal force to the movable block 360 and the limiting block 350 respectively, causing the limiting block 350 and the movable block 360 to move away from each other. At this time, the limiting spring 362 is in a stretched state. During the movement of the movable block 360 under force, it will synchronously drive the connecting frame 361 to move away from the movable side clamping block 340. That is, the end of the movable side clamping block 340 will lose the limitation of the connecting frame 361. The elastic component in the compressed state will drive the movable side clamping block 340 to move away from the top plate 310 and gradually move towards the side wall of the clamping groove. Meanwhile, as the top plate 310 continuously moves towards the inner end of the side groove, the relatively movable side clamping block 340 and the fixed side clamping block 330 will gradually approach the inner end of the clamping groove. The fixed side clamping block 330 remains in a fixed position, while the movable side clamping block 340 gradually approaches the side wall of the clamping groove via the elastic component until it contacts the side wall. It is worth noting that in this design, after the elastic component fully releases its elastic force, the distance between the movable side clamping block 340 and the fixed side clamping block 330 is longer than the width of the clamping groove. Therefore, when the fixed side clamping block 330 extends into the clamping groove and there is a gap between it and the side wall of the clamping groove, the entire clamping block will move under the action of the elastic component. The plate 30 slides along the bottom end of the clamping arm 20, causing the fixed side clamping block 330 to move synchronously with the clamping plate 30 towards the other side wall of the clamping groove until the fixed side clamping block 330 contacts the side wall. At this time, the movable side clamping block 340 and the fixed side clamping block 330 are located on the two side walls of the clamping groove, so that the clamping plate 30 is exactly located in the middle of the side of the pallet, reducing the difference in gravity of the pallet on both sides of the clamping plate 30, thereby improving the stability during the transfer process and preventing shaking, overturning and tilting. At the same time, the horizontal force applied by the elastic component further increases the connection stability between the fixed side clamping block 330 and the movable side clamping block 340 and the pallet.

[0017] It is worth noting that the top plate 310 needs to be manually reset after being compressed in order to clamp the next pallet, which greatly reduces the clamping efficiency. Figure 5 As shown, the limiting assembly includes a pair of return springs 314, which are disposed between the top plate 310 and the fixed plate 370. When the top plate 310 is subjected to force and moves towards the wedge-shaped gap position, the top plate 310 will pull the return springs 314, causing the return springs 314 to be in a stretched state. After the stacking work is completed, the two clamping plates 30 move away from each other under the action of the adjusting frame 10 and the clamping arm 20, causing the top plate 310 to disengage from the inner wall of the clamping groove. Under the action of the return springs 314, the top plate 310 will be pulled in the opposite direction. 0 moves to the outside of the side groove. At this time, the movable block 360 and the limit block 350 lose the horizontal component force. The limit spring 362 drives the movable block 360 and the limit block 350 to move closer to each other and re-form a wedge gap. During the reset movement of the movable block 360, the connecting outer frame 361 will be driven to squeeze the movable side clamping block 340 and overcome the force applied by the elastic component to reset the movable side clamping block 340 to the clamping position so as to carry out the next round of pallet clamping work.

[0018] Furthermore, because the wedge block 312 experiences frictional resistance from the inclined surfaces of the movable locking block 360 and the limiting locking block 350 during its insertion into the wedge gap, the moving efficiency of the top plate 310 decreases. To avoid this problem, [the following is omitted as it is not directly related to the previous sentence]. Figure 4As shown, a pair of side wheels 313 are provided on both sides of the wedge block 312. The side wheels 313 are in rolling contact with the side of the wedge block 312. When the wedge block 312 extends into the inner end of the wedge gap, the outer side of the side wheel 313 will replace the side of the wedge block 312 to contact the side of the limiting block 350 and the movable block 360, thereby reducing the contact area between them, that is, reducing the frictional resistance of the wedge block 312 and reducing the obstruction encountered during the adjustment of the position of the wedge block 312.

[0019] Furthermore, when the elastic component drives the entire clamping plate 30 to slide horizontally along the bottom end of the clamping arm 20, the end of the top plate 310 is still in contact with the inner wall of the clamping groove during this process. During the horizontal process, the contact position between the end of the top plate 310 and the inner wall of the clamping groove will generate frictional resistance in the horizontal direction, affecting the stability of the top plate 310. Therefore, this solution provides a pulley 311 at the end of the top plate 310, and the pulley 311 is in a rolling connection with the top plate 310. The pulley 311 is used to replace the top plate 310 in contact with the side wall of the clamping groove, thereby reducing the force on the end of the top plate 310 in the horizontal plane, that is, reducing the resistance encountered by the clamping plate 30 during the sliding process.

[0020] Finally, in order to improve the clamping stability of the pallet, a support plate 320 is fixedly installed on both sides of the bottom end of the clamping plate 30. During the clamping process, the two support plates 320 extend to the bottom end of the pallet to lift the pallet. At the same time, several support rollers 321 are provided at the top of the support plate 320 to reduce the frictional resistance between the support plate 320 and the bottom end of the pallet.

[0021] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-module collaborative pallet stacking and unloading system, comprising a pair of clamping arms (20), an adjustment frame (10) for adjusting the position of the clamping arms (20), and a clamping plate (30) disposed at the bottom end of the clamping arms (20), characterized in that: The clamping plate (30) has a side groove on its side, and a top plate (310) is slidably disposed at the middle position of the inner end of the side groove. A fixed side clamping block (330) is fixedly disposed on one side of the side groove, and a movable side clamping block (340) is slidably disposed on the other side of the side groove. An elastic component is connected between the movable side clamping block (340) and the inner end of the side groove. A movable component is provided between one end of the top plate (310) and the movable side clamp (340), and a limiting component is provided between the top plate (310) and the inner end of the side groove. When the top plate (310) is not under force, a gap is formed between its end and the movable component under the action of the limiting component. The movable component, in conjunction with the action of the movable component, overcomes the force exerted by the elastic component on the movable side clamp (340), causing the movable side clamp (340) to slide closer to the top plate (310) and remain in a fixed state. When the top plate (310) comes into contact with the pallet clamping area, the reaction force provided by the pallet drives the top plate (310) to come into contact with the movable component, and in conjunction with the elastic component, drives the movable side clamping block (340) to move, correcting the pallet clamping position.

2. The multi-module collaborative pallet stacking and unloading system according to claim 1, characterized in that: The movable component includes a limiting block (350), a connecting frame (361), a movable block (360), and a wedge block (312). The wedge block (312) is fixedly installed at the end of the top plate (310). One end of the movable block (360) is connected to the side of the movable block (360), and the other end is attached to the side of the movable side clamp (340). Under stress, the top plate (310) applies a pushing force to the limiting block (350) and the movable block (360), causing the limiting block (350) and the movable block (360) to move away from each other. The position of the movable side clamp (340) is adjusted in conjunction with the connecting frame (361) and the elastic component.

3. The multi-module collaborative pallet stacking and unloading system according to claim 2, characterized in that: The wedge block (312) is fixedly installed at the end of the top plate (310). The limiting block (350) and the movable block (360) are engaged in a plug-in fit. A limiting spring (362) is connected between the plug-in positions of the limiting block (350) and the movable block (360). Under the action of the limiting spring (362), the limiting block (350) and the movable block (360) are kept plugged in close to each other, and a wedge-shaped gap is formed at their ends. The wedge block (312) moves synchronously with the top plate (310) and extends into the wedge-shaped gap. The horizontal component force generated by the contact drives the limiting block (350) and the movable block (360) to move away from each other.

4. The multi-module collaborative pallet stacking and unloading system according to claim 3, characterized in that: The inner end of the top plate (310) is hollow, and a fixed plate (370) is fixedly installed at the inner end of the side groove. The movable side clamp (340) slides along the outer side of the fixed plate (370).

5. The multi-module collaborative pallet stacking and unloading system according to claim 4, characterized in that: The elastic component uses a spring to connect the movable side clamp to the fixed plate (370).

6. The multi-module collaborative pallet stacking and unloading system according to claim 5, characterized in that: The limiting assembly includes a pair of return springs (314), which are disposed between the top plate (310) and the fixed plate (370).

7. The multi-module collaborative pallet stacking and unloading system according to claim 3, characterized in that: A pair of side wheels (313) are provided on both sides of the wedge block (312), and the side wheels (313) are in rolling connection with the side of the wedge block (312).

8. The multi-module collaborative pallet stacking and unloading system according to claim 6, characterized in that: A pulley (311) is provided at the end of the top plate (310), and the pulley (311) is in a rolling connection with the top plate (310).

9. The multi-module collaborative pallet stacking and unloading system according to claim 1, characterized in that: Both sides of the bottom end of the clamp (30) are fixedly provided with support plates (320).

10. The multi-module collaborative pallet stacking and unloading system according to claim 9, characterized in that: The top of the pallet (320) is provided with several rollers (321).

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