Sandpaper roll storage device

Abstract

The application provides a sand paper roll storage device, which comprises a rack, a liftable storage box and a first driving assembly arranged on the rack, a plurality of storage cavities arranged on the storage box at intervals and the storage box being provided with an opening, a supporting frame arranged in the storage cavities, a movable seat and a second driving assembly arranged on the rack, the second driving assembly driving the movable seat to be close to or away from the opening, a lifting plate liftable along the Z-axis direction and a third driving assembly in transmission connection with the lifting plate arranged on the movable seat, a mounting frame arranged on the lifting plate and extending towards the opening, two clamping jaws arranged along the Y-axis direction at intervals at one end of the mounting frame close to the opening, and fourth driving assemblies in transmission connection with the two clamping jaws respectively and driving the two clamping jaws to be synchronously opened or closed. The application solves the technical problem that the existing sand paper roll storage rack is inconvenient to use, and has the technical effects of conveniently storing and taking the sand paper roll and avoiding the sand paper roll from falling from a high place during taking and placing.

Description

Technical Field

[0001] This invention relates to the field of abrasive manufacturing technology, and more particularly to a sandpaper roll storage device. Background Technology

[0002] Sandpaper is a polishing tool made by adhering abrasive to a substrate with an adhesive. It is mainly used to grind the surfaces of metal, wood, etc., to make them smooth and shiny.

[0003] After sandpaper is produced, it is usually wound onto a roller and the sandpaper roll, along with the roller, is placed on a shelf for storage. To save space, the shelf is often multi-layered. However, sandpaper rolls are quite heavy, so when placing them on the upper shelf, forklifts or other machinery are needed for handling. This requires a high level of skill from the operators. Furthermore, because sandpaper rolls are cylindrical, they may roll during handling and placement, causing them to fall from a height, posing a certain safety risk. Therefore, existing sandpaper roll storage racks are inconvenient to use. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a sandpaper roll storage device, which solves the problem that existing sandpaper roll storage racks are inconvenient to use.

[0005] According to an embodiment of the present invention, a sandpaper roll storage device includes a frame, on which a storage box movable along the Z-axis and a first drive assembly pulsatorically connected to the storage box are provided. The storage box has a plurality of storage cavities spaced apart along the Z-axis, and one side of the storage box in the X-axis direction has an opening communicating with the storage cavity. Each storage cavity is provided with a support frame. The frame is also provided with a movable seat movable along the X-axis and a second drive assembly pulsatorically connected to the movable seat. The second drive assembly drives the movable seat to move closer to or away from the opening. The movable seat has a lifting plate movable along the Z-axis and a third drive assembly pulsatorically connected to the lifting plate. The lifting plate has a mounting frame that extends toward the opening. Two grippers are spaced apart along the Y-axis at one end of the mounting frame near the opening. The lifting plate has a fourth drive assembly pulsatorically connected to the two grippers respectively, and the fourth drive assembly drives the two grippers to open or close synchronously.

[0006] Compared with the prior art, the present invention has the following advantages: By employing a support frame set in the storage cavity for placing sandpaper rolls, the storage box has multiple storage cavities, each with a support frame, enabling the storage box to store a large number of sandpaper rolls. A movable seat is set on the frame, with a liftable lifting plate and two grippers on the lifting plate. A fourth drive assembly drives the grippers to close or open, allowing them to grasp both ends of the sandpaper roll's roller or release the roller. Furthermore, the horizontal movement of the movable seat under the drive of a second drive assembly causes the grippers to enter or exit the storage cavity from the opening. A third drive assembly then drives the lifting plate to further facilitate the movement of the sandpaper roll. The vertical movement of the lowering plate causes the grippers to rise and fall vertically, thereby transporting sandpaper rolls into the storage cavity and placing them on the support frame, or removing the sandpaper rolls from the support frame and transporting them out of the storage cavity. At the same time, the first drive component drives the storage box to rise and fall vertically, allowing the grippers to enter different storage cavities to perform sandpaper roll retrieval operations. This facilitates the placement of sandpaper rolls into the various storage cavities of the storage box or the removal of sandpaper rolls. It solves the technical problem of the inconvenience of existing sandpaper roll storage racks, resulting in convenient storage and retrieval of sandpaper rolls, preventing sandpaper rolls from falling from heights during retrieval, and is simple to operate and saves manpower. Attached Figure Description

[0007] Figure 1 This is a schematic diagram of the structure of a sandpaper roll storage device according to an embodiment of the present invention;

[0008] Figure 2 This is a partial structural schematic diagram of a sandpaper roll storage device according to an embodiment of the present invention;

[0009] Figure 3 This is a schematic diagram of the support frame in a sandpaper roll storage device according to an embodiment of the present invention;

[0010] Figure 4 This is a schematic diagram of the movable seat in a sandpaper roll storage device according to an embodiment of the present invention;

[0011] Figure 5 This is a schematic diagram of the movable seat in a sandpaper roll storage device according to an embodiment of the present invention from another perspective;

[0012] Figure 6 This is a schematic diagram of a sandpaper roll storage device according to an embodiment of the present invention installed on a foundation.

[0013] In the above attached figures: 1. Frame; 11. Slide rail; 12. Guide rail; 2. Storage box; 21. Storage cavity; 22. Opening; 23. Support frame; 24. Lifting ring; 25. Pulley; 26. Base plate; 27. Vertical plate; 28. Placement slot; 3. First drive assembly; 31. Electric hoist; 32. Lifting cable; 33. Hook; 4. Movable seat; 41. Threaded hole; 42. Slider; 5. Second drive assembly; 51. Motor; 52. Lead screw; 53. Drive gear; 54. Driven gear; 6. Lifting mechanism 61. Plate; 62. Mounting bracket; 63. Transmission plate; 64. First transmission rod; 65. Second transmission rod; 66. Transmission pin; 7. Guide rod; 8. Third drive assembly; 91. First support rod; 72. Second support rod; 73. First cylinder; 74. First piston rod; 8. Gripper; 91. First gripper body; 92. Second gripper body; 9. Fourth drive assembly; 91. Second cylinder; 92. Second piston rod; 93. Movable block; 94. Slide groove; 100. Sandpaper roll; 101. Roller; 102. Foundation. Detailed Implementation

[0014] The technical solutions of the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0015] like Figures 1 to 6 As shown in the figure, an embodiment of the present invention provides a sandpaper roll storage device for storing sandpaper rolls 100.

[0016] Please refer to Figure 1 , Figure 2 and Figure 6The sandpaper roll storage device includes a frame 1, on which a storage box 2 that can be raised and lowered along the Z-axis and a first drive assembly 3 that is drively connected to the storage box 2 are provided. The first drive assembly 3 is used to drive the storage box 2 to move along the Z-axis on the frame 1. The storage box 2 is provided with a plurality of storage cavities 21 spaced apart along the Z-axis. One side of the storage box 2 in the X-axis direction has an opening 22 communicating with the storage cavity 21. The opening 22 allows the sandpaper roll 100 to enter and exit the storage cavity 21. Each storage cavity 21 is provided with a support frame 23. The frame 23 supports the roller 101 of the sandpaper roll 100 to keep the position of the sandpaper roll 100 stable within the storage cavity 21. The frame 1 also includes a movable seat 4 movable along the X-axis and a second drive assembly 5 connected to the movable seat 4. The second drive assembly 5 drives the movable seat 4 closer to or further away from the opening 22. The movable seat 4 is equipped with a lifting plate 6 movable along the Z-axis and a third drive assembly 7 connected to the lifting plate 6. The third drive assembly 7 adjusts the height of the lifting plate 6. The lifting plate 6 is equipped with a mounting bracket 61. Furthermore, the mounting bracket 61 extends towards the opening 22. Two grippers 8 are spaced apart along the Y-axis at one end of the mounting bracket 61 near the opening 22. A fourth drive assembly 9 is provided on the lifting plate 6, which is pulsatorically connected to the two grippers 8. The fourth drive assembly 9 drives the two grippers 8 to open or close synchronously. By gripping both ends of the roller 101 with the two grippers 8, the sandpaper roll 100 can be grasped. The second drive assembly 5 drives the movable seat 4 to move along the X-axis, which can cause the grippers 8 to extend into or retract from one of the storage cavities 2. 1. When the third driving component 7 drives the lifting plate 6 to rise and fall along the Z-axis, the gripper 8 rises and falls synchronously, thereby moving the sandpaper roll 100 under the drive of the gripper 8, so as to transport the sandpaper roll 100 into the storage cavity 21 and place it on the support frame 23, or remove the sandpaper roll 100 from the support frame 23 and transport it outside the storage cavity 21. Moreover, by driving the storage box 2 to rise and fall along the Z-axis by the first driving component 3, the storage cavity 21 aligned with the gripper 8 can be changed, so that the gripper 8 can pick up and put the sandpaper roll 100 from different storage cavities 21.

[0017] Specifically, the sandpaper roll storage device provided in this embodiment operates as follows: When sandpaper roll 100 is placed into the storage box 2, a gantry crane, forklift, or other equipment is used to transport the sandpaper roll 100 onto the open gripper 8. The fourth drive component 9 drives the gripper 8 to close and clamp the end of the roller 101. Then, the first drive component 3 drives the storage box 2 to rise and fall along the Z-axis, moving one of the storage chambers 21 with space to store the sandpaper roll 100 to a position aligned with the gripper 8. After the storage box 2 is moved into place, the second drive component 5 drives the... The movable seat 4 moves along the X-axis towards the opening 22, causing the gripper 8, along with the sandpaper roll 100, to enter the storage cavity 21 and reach above the placement rack. Then, the third drive assembly 7 drives the lifting plate 6 to descend along the Z-axis until both ends of the roller 101 are placed on the support frame 23. At this time, the fourth drive assembly 9 drives the gripper 8 to open, and as the third drive assembly 7 drives the lifting plate 6 to continue descending along the Z-axis, the gripper 8 disengages from the roller 101. After the gripper 8 disengages from the roller 101, the second drive assembly 5 drives the movable seat 4 to move along the X-axis and drives the gripper 8 to move along the X-axis. Once the gripper 8 retracts from the storage cavity 21, the sandpaper roll 100 can be inserted. When removing the sandpaper roll 100 from the storage box 2, the first drive assembly 3 first moves the storage cavity 21 containing the sandpaper roll 100 to a position aligned with the gripper 8. After the storage box 2 is in place, the second drive assembly 5 drives the movable seat 4 to move along the X-axis towards the opening 22, causing the gripper 8 to enter the storage cavity 21 and reach below the sandpaper roll 100. Then, the third drive assembly 7 drives the lifting plate 6 to rise along the Z-axis until the gripper 8 moves to contact the roller 101. At this position, the fourth drive component 9 drives the gripper 8 to close and clamp the roller 101. After the gripper 8 grasps the roller 101, the third drive component 7 drives the lifting plate 6 to rise along the Z-axis until the roller 101 disengages from the support frame 23. Then, the second drive component 5 drives the movable seat 4 to move along the X-axis and drive the gripper 8 and sandpaper roll 100 out of the storage cavity 21 to remove the sandpaper roll 100. After removal, the fourth drive component 9 drives the gripper 8 to open, and a gantry crane, forklift, or other equipment can be used to remove the sandpaper roll 100 from the gripper 8 and transport it to the target position. The sandpaper roll storage device provided in this embodiment can conveniently store sandpaper rolls 100 into the storage box 2 or take them out from the storage cavity 21. After the sandpaper rolls 100 are placed in the storage box, they can be placed on the support frame 23, which avoids the sandpaper rolls 100 falling from a height during the process of taking them out and putting them in, thus preventing safety accidents. In addition, the sandpaper roll storage device is simple to operate and helps to save manpower.

[0018] like Figure 1As shown, the first drive assembly 3 includes an electric hoist 31, which has a lifting cable 32 with a hook 33 connected to it. The storage box 2 is provided with a lifting ring 24 that cooperates with the hook 33. The storage box 2 is suspended below the electric hoist 31 by the cooperation of the lifting ring 24 and the hook 33. By raising and lowering the lifting cable 32, the electric hoist 31 can move the storage box 2 in the Z-axis direction to adjust its position.

[0019] In detail, the frame 1 is provided with a slide rail 11, the length direction of the slide rail 11 is consistent with the Z-axis direction, and the storage box 2 is provided with a pulley 25 that cooperates with the slide rail 11. The slide rail 11 is provided on the frame 1, and the pulley 25 that cooperates with the slide rail 11 is provided on the storage box 2. When the storage box 2 moves under the drive of the first driving member, the pulley 25 rolls within the slide rail 11 to prevent the storage box 2 from deviating from the preset direction during movement. Furthermore, the slide rail 11 is provided on opposite sides of the storage box 2, and the pulley 25 is provided on both sides of the storage box 2 to cooperate with the corresponding slide rail 11, preventing the sandpaper roll 100 from falling off the support frame 23 during movement and improving the stability of the storage box 2 during movement.

[0020] like Figure 3 As shown, the support frame 23 includes a base plate 26 and two vertical plates 27 vertically arranged on the base plate 26. The two vertical plates 27 are spaced apart along the Y-axis and each has an aligned placement groove 28. The support frame 23 consists of the base plate 26 and the two vertical plates 27 vertically arranged on the base plate 26. Each vertical plate 27 has a placement groove 28. When the sandpaper roll 100 is placed on the support frame 23, both ends of the roller 101 are respectively placed into the aligned placement grooves 28 on the two vertical plates 27 to keep the position of the sandpaper roll 100 stable on the support frame 23. Furthermore, when the gripper 8 removes or places the sandpaper roll 100 from the support frame 23, it extends into the area between the two vertical plates 27 to prevent the gripper 8 from colliding with the support frame 23.

[0021] In this embodiment, each of the vertical plates 27 is provided with three placement slots 28 spaced apart along the X-axis, and the placement slots 28 on two vertical plates 27 are aligned in pairs. Providing three placement slots 28 on each vertical plate 27 allows three sandpaper rolls 100 to be placed on the support frame 23 simultaneously, thereby increasing the capacity of the storage box 2 and making full use of the space.

[0022] Please refer to Figure 1 and Figure 2The second drive assembly 5 includes a motor 51 and a lead screw 52. The lead screw 52 is rotatably mounted on the frame 1, and its axial direction is aligned with the X-axis. The output end of the motor 51 is provided with a drive gear 53, and one end of the lead screw 52 is provided with a driven gear 54 that meshes with the drive gear 53. The movable seat 4 is provided with a threaded hole 41 that mates with the lead screw 52. When the motor 51 starts, the power output by the motor 51 is transmitted to the lead screw 52 through the engagement of the drive gear 53 and the driven gear 54, driving the lead screw 52 to rotate. During the rotation of the lead screw 52, ​​the engagement of the lead screw 52 with the threaded hole 41 drives the movable seat 4 to move along the axis of the lead screw 52, ​​thereby driving the movable seat 4 to move in the X-axis direction. This facilitates the adjustment of the position of the movable seat 4 and improves the adjustment accuracy.

[0023] Specifically, the frame 1 is also provided with a guide rail 12, the length direction of which is consistent with the X-axis direction, and the movable seat 4 is provided with a slider 42 that cooperates with the guide rail 12. The guide rail 12 on the frame 1 is used to guide the movable seat 4 to move on the frame 1, and the cooperation between the slider 42 and the guide rail 12 can reduce the friction between the movable seat 4 and the frame 1, making the movement of the movable seat 4 on the frame 1 smoother and improving the stability of the movable seat 4 during movement.

[0024] Please combine Figure 4 and Figure 5The third drive assembly 7 includes a first support rod 71 and a second support rod 72 rotatably connected. One end of the first support rod 71 is rotatably connected to the movable seat 4, and the other end is movable along the X-axis on the lifting plate 6. One end of the second support rod 72 is rotatably connected to the lifting plate 6, and the other end is movable along the X-axis on the movable seat 4. The third drive assembly 7 also includes a first cylinder 73 and a first piston rod 74 disposed at the output end of the first cylinder 73. The first cylinder 73 is rotatably connected to the movable seat 4, and the first piston rod 74 is rotatably connected to the first support rod 71. When the first piston rod 74 extends out of the first cylinder 73 under the drive of the first cylinder 73, the first piston rod 74 pushes the first support rod 71 to rotate relative to the movable seat 4. When the first support rod 71 rotates, it drives the second support rod 72 to rotate synchronously relative to the lifting plate 6. At the same time, one end of the first support rod 71 slides on the lifting plate 6 and the other end of the second support rod 72 slides on the movable seat 4. At this time, as the first piston rod 74 gradually extends out of the first cylinder 73, the lifting plate 6 rises relative to the movable seat 4 along the Z-axis. When the first piston rod 74 retracts from the first cylinder 73 under the drive of the first cylinder 73, the first piston rod 74 pulls the first support rod 71 to rotate in the opposite direction relative to the movable seat 4. At this time, the second support rod 72 rotates synchronously in the opposite direction and the lifting plate 6 descends relative to the movable seat 4 along the Z-axis. That is, the height of the lifting plate 6 can be adjusted by driving the first piston rod 74 with the first cylinder 73. The operation is convenient and reliable.

[0025] like Figure 4 and Figure 5As shown, the gripper 8 includes a first gripper body 81 and a second gripper body 82 that are rotatably connected to the mounting frame 61. The mounting frame 61 is also provided with a rotatable transmission plate 62, and the fourth drive assembly 9 is rotatably connected to the transmission plate 62 and drives the transmission plate 62 to reciprocate. The two ends of the transmission plate 62 are respectively rotatably connected to a first transmission rod 63 and a second transmission rod 64. The end of the first transmission rod 63 away from the transmission plate 62 is rotatably connected to the first gripper body 81, and the end of the second transmission rod 64 away from the transmission plate 62 is rotatably connected to the second gripper body 82. The gripper 8 includes a first gripper body 81 and a second gripper body 82. When the first gripper body 81 and the second gripper body 82 rotate synchronously and move closer to each other, the gripper 8 closes to clamp the roller 101. When the first gripper body 81 and the second gripper body 82 rotate synchronously and move away from each other, the gripper 8 opens to release the roller 101. The mounting frame 61 is also provided with a rotatable transmission plate 62. The two ends of the transmission plate 62 are respectively connected to the first gripper body 81 and the second gripper body 82 through the first transmission rod 63 and the second transmission rod 64. When the transmission plate 62 rotates under the drive of the fourth drive assembly 9, the first transmission rod 63 and the second transmission rod 64 pull the first gripper body 81 and the second gripper body 82 to rotate as the transmission plate 62 rotates. The first gripper body 81 and the second gripper body 82 rotate in opposite directions under the drive of the transmission plate 62, thereby causing the gripper 8 to open or close.

[0026] In detail, the fourth drive assembly 9 includes a second cylinder 91, a second telescopic rod disposed at the output end of the second cylinder 91, and a movable block 93 connected to the second telescopic rod. The movable block 93 is movable on the lifting plate 6 along the X-axis direction, and the movable block 93 is provided with two vertical sliding grooves 94 spaced apart along the Y-axis direction. The transmission plate 62 is provided with protruding transmission pins 65, and the two transmission pins 65 extend into the sliding grooves 94 and abut against the inner wall of the sliding grooves 94. When the second piston rod 92 extends or retracts from the second cylinder 91 under the drive of the second cylinder 91, the second piston rod 92 pushes or pulls the movable block 93 to move along the X-axis on the lifting plate 6. During the movement of the movable block 93, the transmission pin 65 is pushed to move along the Z-axis in the slide groove 94. As the transmission pin 65 slides, the transmission plate 62 rotates and drives the first claw body 81 and the second claw body 82 to rotate synchronously. When the moving direction of the movable block 93 changes, the moving direction of the transmission pin 65 changes accordingly, causing the transmission plate 62 to rotate in the opposite direction and changing the rotation direction of the first claw body 81 and the second claw body 82, so as to control the opening or closing of the gripper 8. The operation is simple.

[0027] like Figure 5As shown, the lifting plate 6 is provided with a guide rod 66, and the axial direction of the guide rod 66 is consistent with the X-axis direction. The movable block 93 is provided with a guide hole that cooperates with the guide rod 66. The guide rod 66 provided on the lifting plate 6 is used to limit the movement direction of the movable block 93, ensuring that the movable block 93 moves in a preset direction and preventing the movable block 93 from deflecting during movement. It also ensures that the two grippers 8 operate synchronously under the drive of the movable block 93, preventing the sandpaper roll 100 from becoming loose on the grippers 8 due to asynchronous movement of the two grippers 8.

[0028] Please refer to Figure 6 In this embodiment, the sandpaper roll storage device is installed on the foundation 102. The frame 1 is located below the surface of the foundation 102, so that the storage box 2 can be lowered below the ground to facilitate the loading and unloading of sandpaper rolls 100 from the storage cavity 21 located above the storage box 2. The movable seat 4 is located on the surface of the foundation 102, so that the height of the sandpaper roll 100 above the ground when the gripper 8 loads and unloads the sandpaper roll 100 from the storage cavity is convenient for the transport of the sandpaper roll 100.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A sandpaper roll storage device, characterized in that: The device includes a frame, on which is provided a storage box that can be raised and lowered along the Z-axis and a first drive assembly that is pulsatorically connected to the storage box. The storage box has multiple storage chambers spaced apart along the Z-axis and one side of the storage box in the X-axis direction has an opening communicating with the storage chamber. Each storage chamber is provided with a support frame. The frame also has a movable seat that can move along the X-axis and a second drive assembly that is pulsatorically connected to the movable seat. The second drive assembly drives the movable seat to move closer to or away from the opening. The movable seat has a lifting plate that can be raised and lowered along the Z-axis and a third drive assembly that is pulsatorically connected to the lifting plate. The lifting plate has a mounting frame that extends toward the opening. Two grippers are spaced apart along the Y-axis at the end of the mounting frame near the opening. The lifting plate has a fourth drive assembly that is pulsatorically connected to the two grippers respectively and drives the two grippers to open or close synchronously. The gripper includes a first gripper body and a second gripper body that are rotatably connected to the mounting frame. The mounting frame is also provided with a rotatable transmission plate, and the fourth drive assembly is rotatably connected to the transmission plate and drives the transmission plate to reciprocate. A first transmission rod and a second transmission rod are rotatably connected to both ends of the transmission plate. The end of the first transmission rod away from the transmission plate is rotatably connected to the first gripper body, and the end of the second transmission rod away from the transmission plate is rotatably connected to the second gripper body. The fourth drive assembly includes a second cylinder, a second telescopic rod disposed at the output end of the second cylinder, and a movable block connected to the second telescopic rod. The movable block is movable along the X-axis direction on the lifting plate, and two vertical grooves are spaced apart along the Y-axis direction on the movable block. The transmission plate is provided with protruding transmission pins, and the two transmission pins extend into the grooves and abut against the inner wall of the grooves.

2. The sandpaper roll storage device as described in claim 1, characterized in that: The first drive assembly includes an electric hoist, which has a lifting cable and a hook connected to the lifting cable, and the storage box is provided with a lifting ring that cooperates with the hook.

3. The sandpaper roll storage device as described in claim 1, characterized in that: The frame is equipped with a slide rail, the length direction of which is consistent with the Z-axis direction, and the storage box is equipped with a pulley that cooperates with the slide rail.

4. The sandpaper roll storage device as described in claim 1, characterized in that: The support frame includes a base plate and two vertical plates that are vertically arranged on the base plate. The two vertical plates are spaced apart along the Y-axis and each of the two vertical plates is provided with an aligned placement groove.

5. A sandpaper roll storage device as described in claim 4, characterized in that: Each of the vertical plates is provided with a plurality of placement slots spaced apart along the X-axis, and the placement slots on the two vertical plates are aligned in pairs.

6. The sandpaper roll storage device as described in claim 1, characterized in that: The second drive assembly includes a motor and a lead screw. The lead screw is rotatably mounted on the frame and its axial direction is aligned with the X-axis. The output end of the motor is provided with a drive gear, one end of the lead screw is provided with a driven gear that meshes with the drive gear, and the movable seat is provided with a threaded hole that mates with the lead screw.

7. A sandpaper roll storage device as described in claim 1, characterized in that: The third drive assembly includes a first support rod and a second support rod rotatably connected. One end of the first support rod is rotatably connected to the movable seat, and the other end is movable along the X-axis on the lifting plate. One end of the second support rod is rotatably connected to the lifting plate, and the other end is movable along the X-axis on the movable seat. The third drive assembly also includes a first cylinder and a first piston rod disposed at the output end of the first cylinder. The first cylinder is rotatably connected to the movable seat, and the first piston rod is rotatably connected to the first support rod.

8. A sandpaper roll storage device as described in claim 1, characterized in that: The lifting plate is provided with a guide rod and the axial direction of the guide rod is consistent with the X-axis direction. The movable block is provided with a guide hole that cooperates with the guide rod.

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