An automated pallet unstacking and stacking device

Abstract

The application discloses an automatic pallet unstacking and stacking device and relates to the technical field of pallet unstacking and stacking, which comprises a conveying mechanism for conveying pallets, a feeding and retreating mechanism arranged on the side of the conveying mechanism, a lifting mechanism arranged on the feeding and retreating mechanism, and two fork frames arranged on the lifting mechanism, two hanging plates are rotatably arranged on each fork frame, the two hanging plates on each fork frame are spaced apart by a distance, the distance can accommodate a pallet, and the bottom surface of each hanging plate is provided with a supporting plate. The fork frame is used for supporting the upper pallet in the two stacked pallets, and the supporting plate is used for supporting the lower pallet in the two stacked pallets. In one operation process, two pallets can be separated, the feeding and retreating mechanism is reduced in large-distance feeding and retreating frequency, and working wear is reduced, which is beneficial to improving the unstacking and stacking efficiency and prolonging the service life of the structure.

Description

Technical Field

[0001] This invention relates to the field of pallet depalletizing and palletizing technology, and more particularly to an automated pallet depalletizing and palletizing device. Background Technology

[0002] Pallet depalletizing and stacking devices can complete the disassembly and stacking of pallets, saving manpower and facilitating the subsequent placement of goods or pallet collection.

[0003] A search revealed that patent CN110712920B, authorized by patent number CN110712920B, discloses "an intelligent device for pallet palletizing of a bag-unpacking machine." This device utilizes a lifting mechanism, a forward / backward mechanism, and a fork mechanism to achieve pallet pallet palletizing. By reversing the operation, pallet depalletizing can be achieved. During depalletizing, the fork can be inserted into the second pallet from the bottom up on the conveyor mechanism, raising the second pallet and all pallets above it to a certain height. At this point, the conveyor mechanism can transport the first pallet remaining on the conveyor rollers to the next station. Subsequently, the fork lowers and releases all pallets before withdrawing, and then inserts the second pallet into the pallet stack for depalletizing. Through the forward / backward movement of the forward / backward mechanism and the lifting and lowering of the lifting mechanism, depalletizing is achieved sequentially.

[0004] In the existing automated forklift depalletizing process, the forklift is inserted into the second pallet from the bottom to separate the first pallet at the bottom. Each operation of splitting a pallet requires the forward and backward mechanism to move forward and backward a large distance once, and the lifting mechanism to lift and lower a large distance once. Only one pallet can be split in a single operation, which increases the total reciprocating stroke and start frequency of the forward and backward mechanism, and also affects the efficiency of pallet depalletizing and stacking. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide an automated pallet depalletizing and stacking device that addresses the above-mentioned technical deficiencies. This device solves the problem that only one pallet can be depalletized in a single operation in the prior art, resulting in low pallet depalletizing efficiency.

[0006] The technical solution adopted in this invention is: to provide an automated pallet depalletizing and stacking device, including a pallet conveying mechanism, an infeeding / retracting mechanism disposed beside the conveying mechanism, a lifting mechanism disposed on the infeeding / retracting mechanism, and two forks disposed on the lifting mechanism; the conveying mechanism has a plurality of evenly arranged conveying rollers, with a gap between adjacent conveying rollers; and further includes: Each of the forks is rotatably equipped with two hanging plates, and the two hanging plates on each fork are spaced apart by a gap that can accommodate a pallet. The gap between two adjacent conveyor rollers is greater than the width of a single hanging plate. Each of the hanging plates has a tray on its bottom surface. The trays on two hanging plates located on the same fork are arranged opposite each other. The trays and forks are used to support the pallet from the bottom of the pallet's support panel. The forks are used to support the upper pallet of two stacked pallets, and the trays are used to support the lower pallet of two stacked pallets.

[0007] Furthermore, one side of the pallet has an inclined surface, which is located in the direction in which the pallet faces pallet transport.

[0008] Furthermore, it also includes: A drive mechanism, mounted on the fork, is used to drive the hanging plate to rotate actively.

[0009] Furthermore, each of the forks is provided with a drive mechanism, which includes a drive motor. The drive motor drives the corresponding hanging plate on the fork to rotate via a traction rope. The two hanging plates rotate either close to each other or far apart.

[0010] Furthermore, a turntable is fixedly connected to the output end of the drive motor, the hanging plate and the fork are rotatably connected through a rotating shaft, the turntable and the rotating shaft are connected by a traction rope, the end of the traction rope is fixedly connected to the rotating shaft of the front hanging plate, and the middle of the traction rope has a branch line, which is fixedly connected to and wound around the rotating shaft of the rear hanging plate.

[0011] Furthermore, the lower end of the suspended platform has a base support, the support plate has a rotating shaft, and the support plate is rotatably mounted on the lower end of the suspended platform via the rotating shaft, with the support plate located above the base support; it also includes: A counterweight is provided at one end of each of the rotating shafts, and the counterweight is located on one side of the base.

[0012] Furthermore, the hanging platform also has two side plates, the fork is located between the two side plates and both side plates are rotatably mounted on the fork, and the base is fixedly connected to the side plates on both sides.

[0013] Furthermore, the pallet is located on the outside of the side plate, and the counterweight is located on the inside of the side plate.

[0014] Furthermore, the pallet is located inside the side plate, and the counterweight is located outside the side plate.

[0015] Furthermore, the lifting mechanism is equipped with a distance adjustment mechanism that can adjust the distance between the two forks.

[0016] The beneficial effects of this invention are as follows: During pallet destacking, the forward / backward mechanism moves forward, the forks insert into the third pallet, and the hanging plate and pallet support the second pallet. The lifting mechanism drives the forks to rise, simultaneously lifting the second pallet and the pallet above it, thus separating the first pallet. Then, without the forward / backward mechanism retracting, the lifting mechanism descends to place the second pallet, which is held by the pallet, onto the conveying mechanism, thereby separating the second pallet. This invention can separate two pallets in a single operation, reducing the number of large-distance forward / backward movements of the forward / backward mechanism, reducing wear and tear, improving destacking and stacking efficiency, and extending the service life of the structure. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 For the present invention Figure 1 A partial structural diagram; Figure 3 This is a schematic diagram of the structure of the fork, lifting plate, pallet, and lifting mechanism of the present invention; Figure 4 This is a schematic diagram showing the fork holder inserted into the tray according to the present invention; Figure 5 For the present invention Figure 4 Enlarged structural diagram at point a; Figure 6 For the present invention Figure 4 A schematic diagram of the right-side view structure; Figure 7 This is a schematic diagram showing the state after the first tray has been separated according to the present invention; Figure 8 This is a schematic diagram of the tray structure in Embodiment 1 of the present invention; Figure 9 This is a schematic diagram showing the state of the fork carriage when the second pallet is disassembled and retracted according to the present invention; Figure 10 This is a schematic diagram of the fork's forward movement in Embodiment 1 of the present invention; Figure 11 This is a schematic diagram of the state of the lifting plate when the fork is moving forward in Embodiment 1 of the present invention; Figure 12 This is a schematic diagram of the structure of the drive mechanism, hanging plate, support plate, and other components in Embodiment 2 of the present invention; Figure 13 This is a schematic diagram of the structure of the pallet in a horizontal position in Embodiment 2 of the present invention; Figure 14 This is a schematic diagram of the drive mechanism and the hanging plate of the present invention; Figure 15 This is a schematic diagram of the structure of the present invention with the tray located on the outside of the side plate and the tray opened laterally. Figure 16This is a schematic diagram of the structure of the present invention, showing the tray located outside the side plate and the tray folded. Figure 17 This is a schematic diagram of the structure of the pallet located inside the side plate of the present invention; Figure 18 This is a schematic diagram of the side panel of the present invention having a structure that is wider at the top and narrower at the bottom.

[0018] The markings in the diagram are as follows: 1. Conveying mechanism; 101. Conveying roller; 102. Rear fixed plate; 2. Forward and backward mechanism; 201. Lifting mechanism; 202. Fork frame; 3. Pallet; 301. First pallet; 302. Second pallet; 303. Third pallet; 4. Hanging plate; 401. Side plate; 402. Base support; 403. Rotating shaft; 5. Pallet; 501. Inclined surface; 502. Rotating shaft; 601. Drive motor; 602. Traction rope; 6021. Branch line; 603. Turntable; 7. Counterweight. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0020] To keep the drawings concise, each figure only schematically shows the parts relevant to the invention, and these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some figures, only one of the components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0021] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0022] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0023] like Figure 1-18 As shown, an automated pallet depalletizing and stacking device includes a conveying mechanism 1 for transporting pallets 3, a forward / backward mechanism 2 disposed beside the conveying mechanism 1, a lifting mechanism 201 disposed on the forward / backward mechanism 2, and two forks 202 disposed on the lifting mechanism 201. Figure 1Taking the shown perspective as an example, the left-right direction is taken as the length direction of the conveying mechanism 1. The conveying mechanism 1 is used to transport the pallet 3 in the left-right direction, the forward and backward mechanism 2 is used to drive the lifting mechanism 201 to move in the forward and backward direction, and the lifting mechanism 201 is used to drive the fork 202 to move up and down. The conveying mechanism 1 has a front fixed plate, a rear fixed plate 102, and a plurality of evenly arranged conveying rollers 101 installed between the front fixed plate and the rear fixed plate 102, with a gap between adjacent conveying rollers 101.

[0024] This automated pallet depalletizing and palletizing device also includes: Two hanging plates 4 are rotatably mounted on each fork 202. The two hanging plates 4 on each fork 202 are spaced apart by a certain distance, which can accommodate the pallet 3. The distance between two adjacent conveyor rollers 101 is greater than the width of a single hanging plate 4. Each pallet 5 has a tray 5 on its bottom surface, and the trays 5 on two pallets 4 located on the same fork 202 are arranged opposite each other. Each pallet 3 includes a support panel with a support underneath. The support has a space for the fork 202 to be inserted. The tray 5 is used to support the pallet 3 from the bottom of the support panel, and the fork 202 is also used to support the pallet 3 from the bottom of the support panel. The fork 202 is used to support the upper pallet 3 of two stacked pallets 3, and the tray 5 is used to support the lower pallet 3 of two stacked pallets 3.

[0025] like Figure 1-2 As shown, the stacked pallets 3 can be positioned on the conveying mechanism 1, positioning the pallets 3 next to the forklift 202, thereby facilitating the forklift 202 to perform destacking and stacking operations on the pallets 3. The conveying mechanism 1, lifting mechanism 201, forward / backward mechanism 2, and corresponding control systems have already been disclosed in the prior art, and will not be described in detail here.

[0026] like Figure 3-8As shown, the destacking operation principle of this application is as follows: For ease of description, the forward and backward direction of the advancing and retreating mechanism 2 is used as the front-back direction. The first pallet 3, the second pallet 3, and the third pallet 3 counted from bottom to top in the stacked pallets 3 are respectively named the first pallet 301, the second pallet 302, and the third pallet 303. When destacking the pallets 3, the advancing and retreating mechanism 2 drives the fork 202 forward, and the fork 202 inserts into the third pallet 303. The front end of the fork 202 passes through the front end of the third pallet 303. At this time, the hanging plate 4 and the pallet 5 on the front side of each fork 202 are located below the front end of the second pallet 302, and the hanging plate 4 and the pallet 5 on the rear side are located below the rear end of the second pallet 302. However, the pallet 5 is separated from the bearing panel of the second pallet 302 by a distance, and the two do not contact each other. Then the forklift 202 rises, lifting the third pallet 303. The pallet 5 then abuts against the bottom surface of the support panel of the second pallet 302. At this point, there is a gap between the lower end of the third pallet 303 and the upper end of the second pallet 302; this gap is a clearance interval. Finally, the second pallet 302 and the pallet 3 above it are lifted away from the first pallet 301 (the state at this point is as follows). Figure 6 As shown), the forklift 202 stops rising, and the conveying mechanism 1 can then transport the first pallet 301 to the next station, completing the splitting of one pallet 3; then the forklift 202 descends, and the second pallet 302 abuts against the conveying roller 101 (the state at this time is as shown). Figure 7 As shown, the lifting mechanism 201 drives the fork 202 to move downwards, causing the pallet 5 to detach from the lower end of the bearing panel of the second pallet 302 by a small distance (reducing the detachment resistance of the pallet 5). At this time, there is still a clearance between the lower end of the third pallet 303 and the upper end of the second pallet 302, so the translation of the second pallet 302 will not affect the third pallet 303. The fork 202 stops descending, and the conveying mechanism 1 transports the second pallet 302 to the next station, completing the splitting of the second pallet 302. Finally, the fork 202 descends again, placing the third pallet 303 on the conveying roller 101. Then, the forward and backward mechanism 2 retracts, driving the fork 202 to exit, completing one operation to split two pallets 3.

[0027] The two lifting plates 4 and pallets 5 on each forklift 202 are arranged opposite each other. The two forklifts 202 can be equipped with pallets 5 in at least four positions to lift the pallet 3, which can achieve stable lifting.

[0028] like Figure 10-11As shown, the forward and backward mechanism 2 moves forward, and the fork 202 carries the hanging plate 4 and the pallet 5 through the pallet 3. When the hanging plate 4 on the front side comes into contact with the pallet 3, it will rotate to an inclined state to avoid it, so as to smoothly pass through the pallet 3 until the hanging plate 4 moves to the front side of the pallet 3. At this time, the end of the fork 202 needs to extend beyond the end of the pallet 3 by a certain distance (this distance is greater than the length of the hanging plate 4) so ​​that the inclined hanging plate 4 can automatically extend to the front side of the pallet 3. Then, the forward and backward mechanism 2 moves backward a certain distance. The fork 202 moves backward so that the hanging plates 4 on both the front and rear sides of the pallet 3 are in a vertical state, and the pallet 5 enters under the pallet 3.

[0029] After completing one destacking process, the forward and backward mechanism 2 moves backward, and the fork 202 carrying the lifting plate 4 and pallet 5 passes through the pallet 3 and exits. Different structures and implementation methods can be adopted according to different pallet 3 structures.

[0030] Example 1: like Figure 9 As shown, if the lower end of the bearing panel of pallet 3 has a through-passage for the vertically positioned hanging plate 4 to pass through, the vertically positioned hanging plate 4 can move directly forward and backward. When the third pallet 303 is located on the conveyor roller 101 during destacking, the hanging plate 4 passes downward between the two conveyor rollers 101. When the fork 202 exits pallet 3, the rear hanging plate 4 and the pallet 5 pass the rear fixing plate 102 of the conveying mechanism 1. The rear hanging plate 4 is passively rotated to avoid collisions because it is blocked by the rear fixing plate 102. The front hanging plate 4 can exit the fork 202 without passing through the rear fixing plate 102. Then the fork 202 can rise to a certain height to continue the next destacking operation. Of course, the rear fixing plate 102 of the conveying mechanism 1 can also be used to create a notch to avoid collisions.

[0031] In Example 1, the lifting plate 4 rotates passively to complete the destacking operation. During the stacking operation, the lifting plate 4 cannot retract between two pallets 3 in a vertical position; it needs to be manually rotated to a horizontal position, close to the forklift 202, and then secured. The forklift 202 is then used to complete the stacking operation one pallet at a time. Since in actual needs, frequent switching between destacking and stacking is unnecessary, the inconvenience of manual assistance can be ignored.

[0032] In this embodiment 1, when the conveying mechanism 1 transports the second pallet 302, the hanging plates 4 and pallets 5 on both sides can be passively opened. Please refer to... Figure 8 The pallet 5 has an inclined surface 501 on one side, which is located in the direction of transport of the pallet 5 towards the pallet 3. When the pallet 3 moves on the conveying mechanism 1, the vertical side of the support of the pallet 3 abuts against the inclined surface 501. Under the guidance of the inclined surface, the hanging plate 4 rotates and pushes the pallet 5 to the outside of the pallet 3.

[0033] When using, such as Figure 7-8As shown, in Embodiment 1, by setting the inclined surface 501, when the second tray 302 moves, the tray 5 and the hanging plate 4 can be passively opened. When the tray 3 moves, the support of the tray 3 abuts against the inclined surface 501 of the tray 5, and the inclined surface pushes the tray 5 outward, similar to the automatic retraction structure of the locking tongue.

[0034] Example 2: like Figure 12-14 As shown, if the lower end of the bearing panel of the pallet 3 does not have a through-passage for the vertically positioned hanging plate 4 to pass through, i.e., when the lower end of the pallet 3 has a connecting plate, the front hanging plate 4 and the support plate 5 cannot be directly withdrawn in a vertical state, and the support plate 5 will hook onto the lower connecting plate. In this case, it is necessary to actively control the rotation of the hanging plate 4. In this embodiment, a drive mechanism is set to actively control the rotation of the hanging plate 4. The hanging plate 4 at the front end of the fork 202 can be actively driven, and the hanging plate 4 at the rear end can also be actively driven at the same time, so that the hanging plate 4 is close to a horizontal horizontal state (it does not necessarily have to be horizontal, it can be tilted at a slight angle), so that it can pass directly through the pallet 3.

[0035] When the hanging plate 4 is actively controlled to rotate, as the forward / reverse mechanism 2 moves forward, the front hanging plate 4 can rotate to the front of the fork 202, so that the front of the fork 202 extends a short distance beyond the pallet 3. Then, the front hanging plate 4 rotates downward to a vertical position, and the pallet 5 is positioned below the pallet 3. The hanging plates 4 on both sides of the pallet 3 can be rotated relative to each other, that is, they can rotate and open simultaneously to follow the fork 202 forward or backward. The front hanging plate 4 rotates forward, and the rear hanging plate 4 rotates backward. In this embodiment, when the conveying mechanism 1 transports the second pallet 302, the hanging plates 4 on both sides can be actively opened by the drive mechanism to avoid obstacles, or they can be passively opened without activating the drive mechanism to avoid obstacles.

[0036] In Example 2, the lifting plate 4 can be actively rotated to a lateral position, making it easier to switch between destacking and stacking. The forward and backward movement of the fork 202 is not affected, and it can be adapted to the moving distance.

[0037] The working principle of palletizing is the opposite of that of depalletizing. The palletizing principle is as follows: After the forward and backward mechanism 2 moves forward once, the fork 202 lifts one pallet 3 on the upper end of the conveyor roller 101. Then, the pallet 5 lifts the next pallet 3 that is conveyed, realizing the lifting of two pallets 3 at one time. Then, the forward and backward mechanism 2 moves backward and stacks the two pallets 3 in the palletizing position, completing the palletizing operation. In one palletizing operation, the forward and backward mechanism 2 moves forward and backward once, which can complete the palletizing of two additional pallets 3. This process is repeated to complete the palletizing operation.

[0038] Furthermore, a drive mechanism is mounted on the fork 202 to drive the hanging plate 4 to rotate.

[0039] When using, such as Figure 12As shown in Embodiment 2, the drive mechanism can realize the active rotation of the hanging plate 4. It can be a variety of existing drive forms, such as direct drive or through a transmission mechanism, and is controlled by the control system.

[0040] Furthermore, each fork 202 is equipped with a drive mechanism, which includes a drive motor 601. The drive motor 601 drives the corresponding hanging plate 4 on the fork 202 to rotate through the traction rope 602. The two hanging plates 4 rotate close to each other or far apart.

[0041] like Figure 14 As shown in Embodiment 2, each fork 202 is equipped with a separate drive mechanism. The output end of the drive motor 601 is fixedly connected to a turntable 603. The hanging plate 4 and the fork 202 are rotatably connected through a rotating shaft 403. The turntable 603 and the rotating shaft 403 of the hanging plate 4 are connected by a traction rope 602. When the turntable 603 winds up the traction rope 602, it can drive the rotating shaft 403 of the hanging plate 4 to rotate through the traction rope 602, thereby actively controlling the hanging plate 4 to rotate and open. When the turntable 603 releases the traction rope 602, the hanging plate 4 naturally falls to a vertical position. The end of the traction rope 602 is fixedly connected to the rotating shaft 403 of the front hanging plate 4, and the traction rope 602 is wound around the rotating shaft 403. The middle of the traction rope 602 has a branch line 6021, which is fixedly connected to and wound around the rotating shaft 403 of the rear hanging plate 4 through the branch line 6021. When the traction rope 602 moves, the rotation of the rotating shaft 403 can be achieved by pulling it. The winding direction of the traction rope 602 on the rotating shaft 403 can be set according to the rotation control requirements.

[0042] Furthermore, such as Figure 15 and Figure 16 As shown, the lower end of the hanging plate 4 has a base support 402; the support plate 5 has a rotating shaft 502, and the support plate 5 is rotatably set at the lower end of the hanging plate 4 through the rotating shaft 502. The support plate 5 is located above the base support 402. When the support plate 5 supports the bottom surface of the bearing panel of the tray 3, the base support 402 is used to support the support plate 5, so that the support plate 5 is kept in a horizontal state.

[0043] Each rotating shaft 502 is provided with a counterweight 7 at one end. The counterweight 7 is located on one side of the base 402 and is used to keep the corresponding support plate 5 in a horizontal position.

[0044] When using, such as Figure 12-18 As shown, the counterweight 7 is located below the pallet 5, lowering the center of gravity and ensuring that the rotatable pallet 5 is in a horizontal position. When the pallet 5 supports the tray 3, the base support 402 provides support.

[0045] When the hanging plate 4 is in a vertical position, the pallet 5 supports the pallet 3, and the bottom support 402 can support the pallet 5 from below. When the hanging plate 4 is rotated outward to be close to horizontal, the pallet 5 can maintain a horizontal state under the action of the counterweight 7, reducing the height space occupied, making entry and exit more stable, and better adapting to different pallet 3 height spaces.

[0046] Furthermore, the hanging platform 4 also has two side plates 401, which are fixedly connected to both ends of the rotating shaft 403. The fork 202 is located between the two side plates 401, and the bottom support 402 is fixedly connected to the side plates 401 on both sides.

[0047] The tray 5 has two configuration methods. The first is that the tray 5 is located on the outside of the side plate 401, and the second is that the tray 5 is located on the inside of the side plate 401. The two configuration methods of the tray 5 are described in detail below.

[0048] like Figure 15 and Figure 16 As shown, the tray 5 is located on the outside of the side plate 401.

[0049] Both support plates 5 on each hanging plate 4 can be located on the outside of the side plate 401. Each side plate 401 has a support plate 5 on its outer side, that is, the support plate 5 is located beside the fork 202. The bottom support 402 is formed by bending, and the support plate 5 is located inside the bent bottom support 402. In this structure, the counterweight 7 is located on the inside of the side plate 401.

[0050] like Figure 17 As shown, the pallet 5 can also be located inside the two side plates 401, between the two side plates 401 and below the fork 202. This structure reduces the width occupied in the left and right directions, better adapts to the space of the pallet 3, and makes the structure of the lifting plate 4 more stable. In this structure, the counterweight 7 is located on the outside of the two side plates 401.

[0051] Compared to placing the pallet 5 inside the side panel 401, placing the pallet 5 outside the side panel 401 allows for a longer length, enhancing the reliability and stability of the lifting pallet 3.

[0052] like Figure 18 As shown, in order to further reduce the width of the hanging plate 4 inserted into the pallet 3, the side plates 401 on both sides have a structure that is wider at the top and narrower at the bottom. The upper part is rotatably connected to the fork 202, and the lower part is rotatably mounted on the pallet 5. Counterweights 7 are arranged on the outside of the lower side of the two hanging plates 4.

[0053] Furthermore, the lifting mechanism 201 is equipped with a distance adjustment mechanism that can adjust the distance between the two forks 202. The distance adjustment mechanism drives the two forks 202 to move closer to or further apart from each other, thereby adjusting the distance between the two forks 202. The distance adjustment mechanism can be a screw and nut structure, with the two ends of the screw having reverse threads. The two forks 202 are respectively installed on the reverse threads at both ends by nuts. Rotating the screw can adjust the distance between the two forks 202.

[0054] When in use, the spacing between the two forks 202 can be adjusted to accommodate different pallet spaces.

[0055] It is understood that the present invention has been described through some embodiments, which are known to those skilled in the art. Various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of the invention. Furthermore, under the teachings of the present invention, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of the present invention.

Claims

1. An automated pallet depalletizing and stacking device, comprising a conveying mechanism (1) for transporting pallets (3), a forward / backward mechanism (2) disposed beside the conveying mechanism (1), a lifting mechanism (201) disposed on the forward / backward mechanism (2), and two forks (202) disposed on the lifting mechanism (201), wherein the conveying mechanism (1) has a plurality of evenly arranged conveying rollers (101), and there is a gap between adjacent conveying rollers (101); characterized in that, Also includes: Two hanging plates (4) are rotatably mounted on each of the forks (202), and the two hanging plates (4) on each fork (202) are spaced apart by a gap that can accommodate the pallet (3). The gap between two adjacent conveyor rollers (101) is greater than the width of a single hanging plate (4). The bottom surface of each of the hanging plates (4) is provided with the tray (5). The trays (5) on the two hanging plates (4) located on the same fork (202) are arranged opposite to each other. The tray (5) and the fork (202) are used to support the pallet (3) from the lower end of the bearing panel of the pallet (3). The fork (202) is used to support the upper pallet (3) of the two pallets (3) stacked together. The tray (5) is used to support the lower pallet (3) of the two pallets (3) stacked together.

2. The automated pallet depalletizing and palletizing device according to claim 1, characterized in that, The pallet (5) has an inclined surface (501) on one side, which is located in the direction of transport of the pallet (5) towards the pallet (3).

3. The automated pallet depalletizing and palletizing device according to claim 1, characterized in that, Also includes: A drive mechanism is provided on the fork (202) for driving the hanging plate (4) to rotate actively.

4. An automated pallet depalletizing and palletizing device according to claim 3, characterized in that, Each of the forks (202) is provided with a drive mechanism, which includes a drive motor (601). The drive motor (601) drives the corresponding hanging plate (4) on the fork (202) to rotate through the traction rope (602). The two hanging plates (4) rotate close to each other or far apart.

5. An automated pallet depalletizing and palletizing device according to claim 4, characterized in that, The output end of the drive motor (601) is fixedly connected to a turntable (603). The hanging plate (4) and the fork (202) are rotatably connected through a rotating shaft (403). The turntable (603) and the rotating shaft (403) are connected by a traction rope (602). The end of the traction rope (602) is fixedly connected to the rotating shaft (403) of the front hanging plate (4). The traction rope (602) has a branch line (6021) in the middle, which is fixedly connected to and wound around the rotating shaft (403) of the rear hanging plate (4) through the branch line (6021).

6. An automated pallet depalletizing and palletizing device according to claim 1, characterized in that, The lower end of the hanging plate (4) has a base support (402), and the support plate (5) has a rotating shaft (502). The support plate (5) is rotatably mounted on the lower end of the hanging plate (4) via the rotating shaft (502), and the support plate (5) is located above the base support (402); it also includes: A counterweight (7) is provided at one end of each of the rotating shafts (502), and the counterweight (7) is located on one side of the base (402).

7. An automated pallet depalletizing and palletizing device according to claim 6, characterized in that, The hanging plate (4) also has two side plates (401), the fork (202) is located between the two side plates (401) and both side plates (401) are rotatably mounted on the fork (202), and the base (402) is fixedly connected to the side plates (401) on both sides.

8. An automated pallet depalletizing and palletizing device according to claim 7, characterized in that, The pallet (5) is located on the outside of the side plate (401), and the counterweight (7) is located on the inside of the side plate (401).

9. An automated pallet depalletizing and palletizing device according to claim 7, characterized in that, The pallet (5) is located inside the side plate (401), and the counterweight (7) is located outside the side plate (401).

10. An automated pallet depalletizing and palletizing device according to claim 1, characterized in that, The lifting mechanism (201) is equipped with a distance adjustment mechanism that can adjust the distance between the two forks (202).

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