Tray unstacker

Abstract

The utility model provides a tray unstacker which comprises a machine frame, a lifting mechanism, a guide mechanism and a grabbing arm mechanism, the lifting mechanism comprises a motor, a transmission chain, a driving chain wheel, a lifting chain wheel, a lifting transmission shaft, a lifting cross beam, a left lifting assembly and a right lifting assembly, and a transmission shaft seat is suspended below the cross beam of the machine frame. The lower ends of the left and right lifting assemblies are connected with the left and right sides of the lifting cross beam; the guide mechanism comprises a left guide assembly and a right guide assembly which are used for guiding the lifting cross beam in the lifting process. The grabbing arm mechanism comprises a left grabbing arm assembly and a right grabbing arm assembly which are symmetrically arranged at the left end and the right end of the lifting beam, and the left grabbing arm assembly and the right grabbing arm assembly can swing left and right in the vertical plane around the joint with the lifting beam. The tray unstacker is compact and reasonable in structure, matched with a line body for use, simple in feeding mode, capable of feeding a plurality of trays at a time, high in unstacking efficiency and capable of replacing manual work.

Description

Technical Field

[0001] The utility model relates to the technical field of depalletizers, in particular to a pallet depalletizer. Background Art

[0002] A depalletizer is an automated device used to depalletize and rearrange goods on a pallet. This type of equipment is commonly used in the logistics, warehousing and packaging industries to improve production efficiency and reduce labor costs. In the prior art, for example, the utility model with publication number CN219949792 U discloses a suction cup depalletizer, which uses a combined vacuum system to depalletize the pallet from the top, which is not suitable for transportation on the production line. In addition, the depalletizing method from top to bottom has a relatively large movement range of the robotic arm, which makes the efficiency relatively low. In addition, the suction cup adsorption method is easy to fall off during movement, posing a safety hazard. Utility Model Content

[0003] The technical problem to be solved by the utility model is: in order to overcome the deficiencies in the prior art, the utility model provides a pallet depalletizer.

[0004] The technical solution to be adopted by the utility model to solve its technical problems is: a pallet depalletizer, including a frame and a lifting mechanism, a guide mechanism and a grab arm mechanism arranged on the frame, wherein the lifting mechanism includes a motor, a transmission chain, a driving sprocket, a lifting sprocket, a lifting transmission shaft, 2 seat bearings, 2 transmission shaft seats, a lifting beam, a left lifting component, and a right lifting component, the transmission shaft seat is suspended below the beam at the upper end of the frame, and the upper end of the transmission shaft seat is fixedly connected to the beam, the two ends of the lifting transmission shaft transversely penetrate the two transmission shaft seats, and are rotatably connected to the transmission shaft seat through the seat bearings; the left lifting component and the right lifting component are respectively arranged at the left and right ends of the lifting transmission shaft, and the upper end of the left lifting component is connected to the left end of the lifting transmission shaft, and the lower end is connected to the left end of the lifting beam. The upper end of the right lifting assembly is connected to the right end of the lifting transmission shaft, and the lower end is connected to the right side of the lifting beam; the guide mechanism includes a left guide assembly and a right guide assembly for guiding the lifting beam during the lifting process, the left guide assembly is installed inside the left side of the frame, and the right guide assembly is installed inside the right side of the frame, and the left and right ends of the lifting beam are respectively connected to the frame through the left guide assembly and the right guide assembly; the grab arm mechanism includes a left grab arm assembly and a right grab arm assembly symmetrically arranged at the left and right ends of the lifting beam, the left grab arm assembly and the right grab arm assembly are arranged in parallel, and one end is connected to the lifting beam, and the other end extends to a side away from the lifting beam, and the left grab arm assembly and the right grab arm assembly can swing left and right in a vertical plane around the connection with the lifting beam.

[0005] Specifically, in order to achieve the lifting and lowering of the lifting beam, the left lifting assembly and the right lifting assembly have the same structure, both including a lifting shaft, a connecting bolt, a chain pull block, a radial spherical bearing, and a lifting chain. The lifting shaft and the lifting transmission shaft are perpendicular to each other, and one end is fixed to the end of the lifting transmission shaft, and the other end is fixedly connected to the connecting bolt. The axis of the connecting bolt is parallel to the axis of the lifting transmission shaft. The chain pull block is arranged at the upper end of the lifting chain, and a radial spherical bearing is provided in the chain pull block, and is rotatably connected to the connecting bolt through the radial spherical bearing. The lower end of the lifting chain is relatively fixed to the lifting beam and can drive the lifting beam to rise and fall.

[0006] Since there are errors in the processing and installation of each component, the length of the chains on both sides may deviate. In addition, after working for a long time, the chain will be worn and loose due to aging, which will lead to unstable transmission. Therefore, in order to ensure the stable lifting of the lifting beam, it further includes a chain tensioning assembly, which includes a tensioning rod, a tensioning plate and an adjusting nut. The upper end of the tensioning rod is connected to the lower end of the lifting chain, the lower end of the tensioning rod passes through the tensioning plate and the end is locked by the adjusting nut, and the tensioning plate is relatively fixed to the lifting beam. The outer side of the tensioning plate is welded to the roller seat, and the end of the lifting beam is also fixed to the roller seat, so as to achieve relative fixation between the tensioning plate and the lifting beam. By adjusting the locking position of the adjusting nut on the tensioning rod, the distance between the upper end of the chain and the tensioning plate can be adjusted, so as to achieve chain tensioning to ensure that the lifting beam is always in a horizontal state during the lifting process.

[0007] The lifting and lowering of the lifting chain is achieved by the swinging of the lifting shaft. Therefore, the lifting chain will have a certain swing amplitude in the vertical direction during the lifting process. If the swing amplitude is too large, it will interfere with other components. In addition, the lower end of the lifting chain is connected to the tensioning plate. If the swing amplitude is too large, the connection may easily loosen or break. Therefore, in order to control the swing amplitude of the lifting chain, it further includes a chain limit plate, which is arranged above the tensioning plate and relatively fixed to the tensioning plate. A limit hole is provided on the chain limit plate, and the lifting chain passes through the limit hole.

[0008] When the lifting chain swings, the swing amplitude is limited by the limiting hole on the chain limiting plate, thereby avoiding interference and improving the stability and service life of the connection between the lower end of the lifting chain and the tensioning plate. In this embodiment, the chain limiting plate is also fixed on the roller seat, thereby achieving relative fixation with the lifting beam through the roller seat.

[0009] In order to ensure the stability of the lifting chain during the lifting process, a left guide assembly and a right guide assembly are added to the outer side of the lifting chain on the left and right sides. Specifically, the left guide assembly and the right guide assembly have the same structure, and both include a roller seat, a roller guide, a first roller, a second roller and a third roller. The roller guide is vertically installed on the frame outside the lifting beam. The roller seat is arranged on the inner side of the roller guide and is fixedly connected to the lifting beam. The first roller, the second roller and the third roller are all connected to the roller seat, wherein the first roller and the second roller are respectively arranged on the front and rear sides of the roller guide and can roll on the front and rear sides of the roller guide. The third roller is arranged on the inner side of the roller guide and can roll on the inner side of the roller guide. Through the roller guide and the three rollers arranged on its three sides, the lifting beam can be prevented from swinging back and forth with the lifting chain during the lifting process, thereby ensuring the stability of the destacking grabbing arm.

[0010] As a further solution, in order to improve the efficiency of firewood stacking, a structure of a stacking grabbing arm that swings open and close is adopted to support the pallet. Specifically, the left grabbing arm assembly and the right grabbing arm assembly have the same structure and are in opposite directions, and both include a stacking grabbing arm, a sliding fixed block, a cylinder, and a cylinder mounting seat. The rear end of the sliding fixed block is slidably connected to the lifting beam, and the front end extends forward, and an axial connection portion is formed at the end. The stacking grabbing arm is L-shaped, and a shaft sleeve is provided at its upper end. The shaft sleeve is rotatably connected to the axial connection portion, and the front end of the shaft sleeve is sealed by an end cover. The lower end of the stacking grabbing arm is provided with a plurality of support plates in its length direction, and the support plates extend toward the inner side of the stacking grabbing arm in the horizontal direction; the cylinder is arranged on the lifting beam on the side of the stacking grabbing arm, the cylinder mounting seat is fixedly connected to the lifting beam, and the cylinder body of the cylinder is hinged to the cylinder mounting seat, and the push rod of the cylinder is hinged to the stacking grabbing arm through a fisheye joint.

[0011] In order to make the destacking grab arm stable during the opening and closing swinging process and avoid jamming of the sliding fixed block when sliding, it also includes a grab arm connecting rod, which is arranged on the rear side of the lifting beam, and each side of the lifting beam is provided with two upper and lower strip holes extending horizontally, the rear end of the sliding fixed block passes through the strip hole and is fixedly connected to the upper end of the grab arm connecting rod, and the lower end of the grab arm connecting rod is slidably connected to the strip hole below the lifting beam.

[0012] The frame serves as a support for the entire depalletizer. Specifically, the frame is an L-shaped frame formed by connecting profiles, and the outer frame is fixedly connected by a middle horizontal tie.

[0013] Furthermore, it also includes a control cabinet, and the motor and the cylinder of the grab arm mechanism are electrically connected to the control cabinet.

[0014] The beneficial effects of the utility model are as follows: the pallet depalletizer provided by the utility model has a compact and reasonable structure, only needs to perform lifting actions, does not require large-stroke movement, is made of common materials, and has rigorous and efficient mechanical actions; the pallet depalletizer can be used in conjunction with a line body, has a simple loading method, can load multiple pallets at a time, has high depalletizing efficiency, and can replace manual labor. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0016] Figure 1 The utility model is a structural schematic diagram of a pallet depalletizer.

[0017] Figure 2 The utility model is a structural schematic diagram of a pallet depalletizer.

[0018] Figure 3 The utility model is a schematic diagram of the cross-sectional structure of the pallet depalletizer along the axis of the lifting transmission shaft.

[0019] Figure 4 It is a structural diagram of the guide mechanism.

[0020] Figure 5 It is a structural diagram of the guide mechanism.

[0021] In the figure: 1, frame, 2, lifting beam, 3, stacking grab arm, 4, inserting support plate, 5, horizontal pull, 6, radial spherical bearing, 8, control cabinet, 9, tension rod, 10, roller seat, 11a, first roller, 11b, second roller, 11c, third roller, 12, roller guide rail, 13, tension plate, 14, connecting bolt, 15, chain pull block, 16, lifting shaft, 17, lifting transmission shaft, 18, lifting sprocket, 19, driving sprocket, 20. Grab arm connecting rod, 21. Bushing, 22. Sliding fixed block, 23. End cover, 24. Axle pin, 25. Cylinder, 26. Cylinder mounting seat, 27. Fisheye joint, 28. Ear seat, 29. Anchor, 30. Chain limit plate, 31. Bearing with seat, 32. Roller adapter plate, 33. Connecting block, 34. Motor, 35. Lifting chain, 36. Drive shaft seat, 37. Drive chain, 38. Adjusting nut. DETAILED DESCRIPTION

[0022] The present invention is now described in further detail in conjunction with the accompanying drawings. These drawings are simplified schematic diagrams that only illustrate the basic structure of the present invention in a schematic manner, so they only show the components related to the present invention, and directions and references (e.g., up, down, left, right, etc.) may only be used to help describe the features in the drawings. Therefore, the following specific embodiments are not adopted in a restrictive sense, and the scope of the subject matter for which protection is sought is limited only by the attached claims and their equivalents.

[0023] like Figure 1-Figure 5 As shown, a pallet depalletizer of the utility model comprises a frame 1 and a lifting mechanism, a guide mechanism, a grab arm mechanism and a control cabinet 8 arranged on the frame 1. The frame 1 serves as the support of the entire depalletizer. The frame 1 is an L-shaped frame connected by profiles. The outer frame is fixedly connected by a middle horizontal pull 5. In this embodiment, there are four horizontal pulls 5, one at the front and one at the bottom of the frame, forming a rectangular frame. Two columns on one side are connected by two horizontal pulls 5 to form two upper and lower mounting beams. Four feet 29 are provided on the bottom frame, and the height of the feet 29 can be adjusted. The motor 34 of the lifting mechanism and the cylinder 25 of the grab arm mechanism are electrically connected to the control cabinet 8 to achieve automatic control.

[0024] like Figure 2 As shown, the lifting mechanism includes a motor 34, a transmission chain 37, a driving sprocket 19, a lifting sprocket 18, a lifting transmission shaft 17, two seat bearings 31, two transmission shaft seats 36, a lifting beam 2, a left lifting component, and a right lifting component. The transmission shaft seat 36 is suspended below the beam at the upper end of the frame 1, and the upper end of the transmission shaft seat 36 is fixedly connected to the beam. Both ends of the lifting transmission shaft 17 pass through the two transmission shaft seats 36 horizontally, and are rotatably connected to the transmission shaft seats 36 through the seat bearings 31; the left lifting component and the right lifting component are respectively arranged at the left and right ends of the lifting transmission shaft 17, and the upper end of the left lifting component is connected to the left end of the lifting transmission shaft, and the lower end is connected to the left side of the lifting beam 2, and the upper end of the right lifting component is connected to the right end of the lifting transmission shaft. , the lower end is connected to the right side of the lifting beam 2; the guide mechanism includes a left guide assembly and a right guide assembly for guiding the lifting beam 2 during the lifting process, the left guide assembly is installed inside the left side of the frame 1, and the right guide assembly is installed inside the right side of the frame 1, and the left and right ends of the lifting beam 2 are respectively connected to the frame 1 through the left guide assembly and the right guide assembly; the grab arm mechanism includes a left grab arm assembly and a right grab arm assembly symmetrically arranged at the left and right ends of the lifting beam 2, the left grab arm assembly and the right grab arm assembly are arranged in parallel, and one end is connected to the lifting beam 2, and the other end extends to a side away from the lifting beam 2, and the left grab arm assembly and the right grab arm assembly can swing left and right in a vertical plane around the connection with the lifting beam 2.

[0025] like Figure 3As shown, the left lifting assembly and the right lifting assembly have the same structure, both of which include a lifting shaft 16, a connecting bolt 14, a chain pull block 15, a radial spherical bearing 6, and a lifting chain 35. The lifting shaft 16 is perpendicular to the lifting transmission shaft 17, and one end is fixed to the end of the lifting transmission shaft 17, and the other end is fixedly connected to the connecting bolt 14. The axis of the connecting bolt 14 is parallel to the axis of the lifting transmission shaft 17. The chain pull block 15 is arranged at the upper end of the lifting chain 35, and a radial spherical bearing 6 is provided in the chain pull block 15, and is rotatably connected to the connecting bolt 14 through the radial spherical bearing 6. The lower end of the lifting chain 35 is relatively fixed to the lifting beam 2, and can drive the lifting beam 2 to rise and fall. It also includes a chain tensioning assembly, which includes a tensioning rod 9, a tensioning plate 13 and an adjusting nut 38. The upper end of the tensioning rod 9 is connected to the lower end of the lifting chain 35. The lower end of the tensioning rod 9 passes through the tensioning plate 13 and the end is locked by the adjusting nut 38. The tensioning plate 13 is relatively fixed to the lifting beam 2. It also includes a chain limiting plate 30, which is arranged above the tensioning plate 13 and relatively fixed to the tensioning plate 13. The chain limiting plate 30 is provided with a limiting hole, and the lifting chain 35 passes through the limiting hole.

[0026] like Figure 4 and Figure 5 As shown, the left guide assembly and the right guide assembly have the same structure, and both include a roller seat 10, a roller guide rail 12, a first roller 11a, a second roller 11b and a third roller 11c. The roller guide rail 12 is vertically installed on the frame 1 outside the lifting beam 2, and the roller seat 10 is arranged on the inner side of the roller guide rail 12 and is fixedly connected to the lifting beam 2; the first roller 11a, the second roller 11b and the third roller 11c are all connected to the roller seat 10, wherein the first roller 11a and the second roller 11b are respectively arranged on the front and rear sides of the roller guide rail 12, and can roll on the front and rear side surfaces of the roller guide rail 12, and the third roller 11c is arranged on the inner side of the roller guide rail 12, and can roll on the inner side surface of the roller guide rail 12. In this embodiment, in order to achieve the installation of the third roller 11c, a U-shaped opening is opened on the roller seat 10, and the third roller 11c is connected to the roller seat 10 through a roller adapter plate 32 spanning the U-shaped opening. In addition, in order to ensure that the third roller 11c is higher than the roller seat 10, the roller seat 10 is lifted from the roller guide rail 12 to avoid friction. It also includes two connecting blocks 33 arranged at both ends of the roller adapter plate 32, one side of the connecting block 33 is connected to the roller adapter plate 32, and the bottom is connected to the roller seat.

[0027] like Figure 1As shown, the left grab arm assembly and the right grab arm assembly have the same structure and opposite directions, and both include a destacking grab arm 3, a sliding fixed block 22, a cylinder 25, a cylinder mounting seat 26, and a grab arm connecting rod 20. The rear end of the sliding fixed block 22 is slidably connected to the lifting beam 2, and the front end extends forward, and the end forms a shaft connection portion. The destacking grab arm 3 is L-shaped, and a shaft sleeve 21 is provided at its upper end. The shaft sleeve 21 is rotatably connected to the shaft connection portion, and the front end of the shaft sleeve 21 is sealed by an end cover 23. The lower end of the destacking grab arm 3 is provided with a plurality of insert plates 4 in its length direction, and the insert plates 4 extend toward the inner side of the destacking grab arm 3 in the horizontal direction; the cylinder 25 is arranged on the lifting beam 2 on the side of the destacking grab arm 3, the cylinder mounting seat 26 is fixedly connected to the lifting beam 2, and the cylinder body of the cylinder 25 is hinged on the cylinder mounting seat 26, and the push rod of the cylinder 25 is hinged to the destacking grab arm 3 through a fisheye joint 27. In this embodiment, the cylinder mounting seat 26 is provided with an ear seat 28, and the cylinder body end of the cylinder 25 is hinged on the ear seat 28 through the shaft pin 24; the push rod of the cylinder 25 is connected to the fisheye joint 27, and the depalletizing grab arm 3 is provided with an ear seat 28, and the fisheye joint 27 and the ear seat 28 are hinged through the shaft pin 24. The grab arm connecting rod 20 is arranged on the rear side of the lifting beam 2, and each side of the lifting beam 2 is provided with two horizontally extending upper and lower strip holes, and the rear end of the sliding fixed block 22 passes through the strip hole and is fixedly connected to the upper end of the grab arm connecting rod 20, and the lower end of the grab arm connecting rod 20 is slidably connected in the strip hole below the lifting beam 2. In this embodiment, the upper and lower strip holes are staggered so that the grab arm connecting rod 20 is obliquely connected between the upper and lower strip holes of the lifting beam 2. During the sliding of the sliding fixed block 22, the grab arm connecting rod 20 moves synchronously with it to ensure its sliding stability. Through the action of the grab arm connecting rod 20, it can also be ensured that the destacking grab arm 3 has sufficient supporting force.

[0028] Working principle:

[0029] This pallet depalletizer can be used in conjunction with a conveyor line. If necessary, the feet can be replaced with casters to achieve mobility, which is more flexible. When used in conjunction with a line, this pallet stacker is placed under the line, and a forklift places the entire pallet on the line; when a pallet is needed on the line, the pallet depalletizer starts working, and the cylinders 25 on both sides drive the left and right depalletizing grab arms 3 to retract inward, so that the inserting plate 4 is inserted into the side hole at the bottom of the penultimate pallet; then, the motor 34 drives the lifting transmission shaft 17 to rotate through the transmission chain 37, the driving sprocket 19, and the lifting sprocket 18, and the lifting shaft 16 rotates synchronously with the lifting transmission shaft 17, and the lifting chain 35 drives the lifting beam 2 to rise. At this time, there is a pallet left on the line, and the remaining pallets are lifted, leaving a gap with the line to achieve depalletizing. The line starts, and the pallet flows to the assembly station with the line; then, the motor 34 rotates in the opposite direction to make the lifting beam 2 descend, and the pallet is placed on the line, and the cylinder 25 controls the depalletizing grab arm 3 to lift the upper pallet again, and repeat the above actions.

[0030] When the destacking grabbing arm 3 is pushed outward by the cylinder 25, the sliding fixed block 22 slides outward along the upper strip hole, and at the same time, the lifting beam 2 also slides along the strip hole synchronously. When the cylinder 25 is retracted, the sliding fixed block 22 and the lifting beam 2 slide in opposite directions along the strip hole.

[0031] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without departing from the scope of the utility model through the above description. The technical scope of this utility model is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A pallet depalletizer, characterized in that: It includes a frame and a lifting mechanism, a guiding mechanism and a grab arm mechanism arranged on the frame, wherein: The lifting mechanism includes a motor, a transmission chain, a driving sprocket, a lifting sprocket, a lifting transmission shaft, two seat bearings, two transmission shaft seats, a lifting beam, a left lifting assembly, and a right lifting assembly. The transmission shaft seat is suspended below the beam at the upper end of the frame, and the upper end of the transmission shaft seat is fixedly connected to the beam. The two ends of the lifting transmission shaft pass through the two transmission shaft seats horizontally, and are rotatably connected to the transmission shaft seats through the seat bearings; the left lifting assembly and the right lifting assembly are respectively arranged at the left and right ends of the lifting transmission shaft, and the upper end of the left lifting assembly is connected to the left end of the lifting transmission shaft, and the lower end is connected to the left side of the lifting beam, and the upper end of the right lifting assembly is connected to the right end of the lifting transmission shaft, and the lower end is connected to the right side of the lifting beam; The guide mechanism includes a left guide assembly and a right guide assembly for guiding the lifting beam during the lifting process, the left guide assembly is installed inside the left side of the frame, and the right guide assembly is installed inside the right side of the frame, and the left and right ends of the lifting beam are connected to the frame through the left guide assembly and the right guide assembly respectively; The grab arm mechanism includes a left grab arm assembly and a right grab arm assembly symmetrically arranged at the left and right ends of the lifting beam. The left grab arm assembly and the right grab arm assembly are arranged in parallel, and one end is connected to the lifting beam, and the other end extends to a side away from the lifting beam. The left grab arm assembly and the right grab arm assembly can swing left and right in a vertical plane around the connection with the lifting beam.

2. The pallet depalletizer according to claim 1, characterized in that: The left lifting assembly and the right lifting assembly have the same structure and both include a lifting shaft, a connecting bolt, a chain pull block, a radial spherical bearing and a lifting chain. The lifting shaft and the lifting transmission shaft are perpendicular to each other, and one end is fixed to the end of the lifting transmission shaft, and the other end is fixedly connected to the connecting bolt. The axis of the connecting bolt is parallel to the axis of the lifting transmission shaft. The chain pull block is arranged at the upper end of the lifting chain, and a radial spherical bearing is provided in the chain pull block, and is rotatably connected to the connecting bolt through the radial spherical bearing. The lower end of the lifting chain is relatively fixed to the lifting beam and can drive the lifting beam to rise and fall.

3. The pallet depalletizer according to claim 2, characterized in that: It also includes a chain tensioning assembly, which includes a tensioning rod, a tensioning plate and an adjusting nut. The upper end of the tensioning rod is connected to the lower end of the lifting chain, the lower end of the tensioning rod passes through the tensioning plate and the end is locked by the adjusting nut, and the tensioning plate is relatively fixed to the lifting beam.

4. The pallet depalletizer according to claim 2, characterized in that: It also includes a chain limiting plate, which is arranged above the tensioning plate and fixed relatively to the tensioning plate. A limiting hole is provided on the chain limiting plate, and the lifting chain passes through the limiting hole.

5. The pallet depalletizer according to claim 2, characterized in that: The left guide assembly and the right guide assembly have the same structure, and both include a roller seat, a roller guide rail, a first roller, a second roller and a third roller, wherein the roller guide rail is vertically mounted on a frame outside the lifting beam, and the roller seat is arranged on the inner side of the roller guide rail and is fixedly connected to the lifting beam; the first roller, the second roller and the third roller are all connected to the roller seat, wherein the first roller and the second roller are respectively arranged on the front and rear sides of the roller guide rail and can roll on the front and rear side surfaces of the roller guide rail, and the third roller is arranged on the inner side of the roller guide rail and can roll on the inner side surface of the roller guide rail.

6. The pallet depalletizer according to claim 5, characterized in that: The left grab arm assembly and the right grab arm assembly have the same structure and are in opposite directions, and both include a destacking grab arm, a sliding fixed block, a cylinder, and a cylinder mounting seat. The rear end of the sliding fixed block is slidably connected to the lifting beam, and the front end extends forward, with an axle connection portion formed at the end. The destacking grab arm is L-shaped, and a shaft sleeve is provided at its upper end. The shaft sleeve is rotatably connected to the axle connection portion, and the front end of the shaft sleeve is sealed by an end cover. The lower end of the destacking grab arm is provided with a plurality of support plates in its length direction, and the support plates extend horizontally toward the inner side of the destacking grab arm; the cylinder is arranged on the lifting beam on the side of the destacking grab arm, the cylinder mounting seat is fixedly connected to the lifting beam, and the cylinder body of the cylinder is hinged to the cylinder mounting seat, and the push rod of the cylinder is hinged to the destacking grab arm.

7. The pallet depalletizer according to claim 6, characterized in that: It also includes a grab arm connecting rod, which is arranged on the rear side of the lifting beam. Each side of the lifting beam is provided with two upper and lower strip holes extending horizontally. The rear end of the sliding fixed block passes through the strip hole and is fixedly connected to the upper end of the grab arm connecting rod, and the lower end of the grab arm connecting rod is slidably connected to the strip hole below the lifting beam.

8. The pallet depalletizer according to claim 1, characterized in that: The rack is an L-shaped frame formed by connecting profiles, and the outer frame is fixedly connected by a middle horizontal tie.

9. The pallet depalletizer according to claim 1, characterized in that: It also includes a control cabinet, and the motor and the cylinder of the grab arm mechanism are electrically connected to the control cabinet.

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