An automatic sandpaper feeding device

Abstract

The present invention discloses an automatic feeding device for grinding sandpaper, comprising: a storage device for storing and outputting sandpaper, a forward device for dragging the sandpaper for feeding, a mobile device for driving the sandpaper to move laterally to contact a grinding workpiece, and a lifting device, wherein the storage device and the forward device are respectively located on both sides of the lifting device, the lifting device is vertically connected to the mobile device to drive the mobile device to lift, the storage device and the forward device are both connected in parallel to the mobile device, and the sandpaper passes through the storage device, one side of the lifting device, the mobile device, the other side of the lifting device, and the forward device in sequence. By using the automatic feeding device for grinding sandpaper provided by the present invention, the purposes of accurate grinding and rapid feeding of sandpaper can be achieved, which is conducive to improving the efficiency and effect of sandpaper grinding, and the device is compact in structure and easy to use, and can be promoted for use.

Description

Technical Field

[0001] The invention relates to the technical field of dry grinding, and more particularly to an automatic feeding device for grinding sandpaper. Background Art

[0002] In the prior art, when performing a grinding operation on the motor output shaft, the sandpaper is mostly replaced and fed manually by manually grabbing the sandpaper, which results in the inability to accurately and quickly complete the grinding operation.

[0003] In summary, how to provide a device that can quickly and accurately perform sandpaper feeding operations is a problem that needs to be urgently solved by those skilled in the art. Summary of the invention

[0004] In view of this, the purpose of the present invention is to provide an automatic feeding device for grinding sandpaper, which can achieve the purposes of precise grinding and rapid feeding of sandpaper, etc., which is beneficial to improving the efficiency and effect of sandpaper grinding. The device has a compact structure and is easy to use, and can be promoted for use.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] A device for automatically feeding sandpaper for grinding comprises: a storage device for storing and outputting sandpaper, an advancing device for dragging the sandpaper for feeding, a moving device for driving the sandpaper to move laterally to contact a workpiece for grinding, and a lifting device, wherein the storage device and the advancing device are respectively located on both sides of the lifting device, the lifting device is vertically connected to the moving device to drive the moving device to rise and fall, the storage device and the advancing device are both connected in parallel to the moving device, and the sandpaper passes through the storage device, one side of the lifting device, the moving device, the other side of the lifting device, and the advancing device in sequence.

[0007] Preferably, the mounting base plate of the mobile device is arranged on the top of the lifting device, the storage device and the forward device are both arranged on the lifting base plate, the lifting base plate is connected to the mounting base plate by a connecting rod, the lifting base plate is provided with an opening for the lifting device to pass through, rotating parts for facilitating the transmission of sandpaper are provided on both sides of the opening, reserved holes are provided on the mounting base plate corresponding to the rotating parts for facilitating the passage of sandpaper, and a sandpaper bracket for changing the movement direction of the sandpaper is provided on the top of the mobile device.

[0008] Preferably, the moving device includes a moving bracket for driving the sandpaper bracket to move laterally, a linear transmission device for driving the moving bracket to move laterally, and an elastic module for resetting the moving bracket. The sandpaper bracket is arranged on the top of the moving bracket, and the linear transmission device and the elastic module are respectively arranged on the left and right sides of the moving bracket.

[0009] Preferably, the motion bracket is movably disposed on the mounting base plate, and the mounting base plate is provided with a linear guide rail for limiting the motion trajectory of the motion bracket.

[0010] Preferably, a shock absorber is provided between the linear conveying device and the moving bracket, and the shock absorber is used to reduce the impact force applied to the linear conveying device when the moving bracket is reset.

[0011] Preferably, the storage device includes a storage bracket vertically connected to the lifting base plate, a reel for storing the sandpaper, a transmission shaft for driving the reel to rotate, and a damping module for ensuring that the reel does not loosen, the sandpaper is wound around the outer periphery of the reel, the damping module and the reel are respectively arranged on both sides of the storage bracket, and the transmission shaft passes through the damping module, the storage bracket and the reel in sequence.

[0012] Preferably, a clamping plate for clamping the reel and a locking member for locking the reel and the clamping plate on the transmission shaft are provided on the side of the reel away from the bracket, the clamping plate is arranged in close contact with the reel, and the locking member is connected to the end of the transmission shaft.

[0013] Preferably, the forward device includes an forward bracket vertically connected to the lifting base plate, a rolling member for dragging the sandpaper feed, a driving member for driving the rolling member to rotate, and a tensioning member for pressing the rolling member to tighten the sandpaper, the driving member and the tensioning member are respectively arranged at both ends of the rolling member, and the rolling member is connected to the forward bracket.

[0014] Preferably, the driving member includes a motor and a rotating shaft connected to the output shaft of the motor, and the rolling member includes a main roller connected to the rotating shaft for synchronous rotation and a slave roller cooperating with the main roller to clamp and pull the sandpaper.

[0015] Preferably, the lifting device and the moving device are both reciprocating linear motion modules.

[0016] When using the automatic feeding device for sandpaper provided by the present invention, the sandpaper is outputted from the storage device and then goes around one side of the lifting device, the moving device, and the other side of the lifting device in sequence, and is finally dragged by the forward device to realize the feeding of the sandpaper. During the operation of the sandpaper, when it is necessary to perform a grinding operation on the grinding workpiece, the lifting device can be controlled to rise so that the sandpaper moves to a position flush with the grinding workpiece, and then the moving device is controlled to drive the sandpaper to move laterally so that the sandpaper contacts the grinding workpiece for the grinding operation. When the grinding operation of the grinding workpiece is completed, the moving device can be controlled to move laterally in the opposite direction to move away from the grinding workpiece, and then the lifting device can be controlled to descend to the original position to facilitate the grinding operation of the next grinding workpiece. And because the storage device and the forward device are both connected in parallel with the moving device, the movement trajectory of the sandpaper from the storage device to the moving device and the movement trajectory from the moving device to the forward device can be kept unchanged to ensure the accuracy of the sandpaper grinding position.

[0017] In summary, the automatic feeding device for sandpaper provided by the present invention can achieve the purposes of precise sanding and rapid feeding of sandpaper, which is beneficial to improving the efficiency and effect of sandpaper sanding. In addition, the device has a compact structure and is easy to use, and can be promoted for use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0019] Figure 1 This is a schematic diagram of the structure of the automatic sandpaper feeding device provided by the present invention;

[0020] Figure 2 is a schematic diagram of the structure of the storage device;

[0021] Figure 3 It is a schematic diagram of the structure of the forward device;

[0022] Figure 4 Schematic diagram of the sandpaper motion trajectory.

[0023] Figure 1-Figure 4 middle:

[0024] 1 is a lifting device, 2 is a mounting base plate, 3 is a lifting base plate, 4 is a connecting rod, 5 is a rotating part, 6 is a reserved hole, 7 is a sandpaper bracket, 8 is a moving bracket, 9 is a linear transmission device, 10 is an elastic module, 11 is a linear guide rail, 12 is a shock absorbing part, 13 is a storage bracket, 14 is a reel, 15 is a transmission shaft, 16 is a damping module, 17 is a splint, 18 is a locking part, 19 is a forward bracket, 20 is a rolling part, 21 is a tensioning part, 22 is a motor, 23 is a rotating shaft, 24 is a connecting block, 25 is a whole machine base plate, 26 is a storage device, 27 is a forward device, and 28 is a sandpaper motion track. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] The core of the present invention is to provide an automatic feeding device for sandpaper, which can achieve the purposes of precise sanding and rapid feeding of sandpaper, and is beneficial to improving the efficiency and effect of sandpaper sanding. The device has a compact structure and is easy to use, and can be promoted for use.

[0027] Please refer to Figures 1 to 4 ,in, Figure 1 This is a schematic diagram of the structure of the automatic sandpaper feeding device provided by the present invention; Figure 2 is a schematic diagram of the structure of the storage device; Figure 3 It is a schematic diagram of the structure of the forward device; Figure 4 Schematic diagram of the sandpaper motion trajectory.

[0028] The present specific embodiment provides an automatic feeding device for grinding sandpaper, comprising: a storage device 26 for storing and outputting sandpaper, a forward device 27 for dragging the sandpaper to feed, a moving device and a lifting device 1 for driving the sandpaper to move laterally to contact the grinding workpiece, the storage device 26 and the forward device 27 are respectively located on both sides of the lifting device 1, the lifting device 1 is vertically connected to the moving device to drive the moving device to rise and fall, the storage device 26 and the forward device 27 are both connected in parallel with the moving device, and the sandpaper passes through the storage device 26, one side of the lifting device 1, the moving device, the other side of the lifting device 1 and the forward device 27 in sequence.

[0029] It should be noted that, since the storage device 26 and the forward device 27 are both connected in parallel with the mobile device, the movement trajectory of the sandpaper from the storage device 26 to the mobile device and the movement trajectory from the mobile device to the forward device 27 can be kept unchanged, so as to ensure the sandpaper grinding position is accurate. The storage device 26 can be set as a reel 14, so that when the forward device 27 drags the sandpaper, the sandpaper can be pulled out from the reel 14.

[0030] In actual use, the structure, size, position, etc. of the storage device 26, the advancing device 27, the moving device and the lifting device 1 can be determined according to actual conditions and actual needs.

[0031] It should also be noted that when using the automatic feeding device for sandpaper provided by the present invention, the sandpaper is output from the storage device 26 and then passes through one side of the lifting device 1, the moving device, and the other side of the lifting device 1 in sequence, and is finally dragged by the forward device 27 to realize the feeding of the sandpaper. During the operation of the sandpaper, when it is necessary to perform a grinding operation on the workpiece to be polished, the lifting device 1 can be controlled to rise so that the sandpaper moves to a position flush with the workpiece to be polished, and then the moving device can be controlled to drive the sandpaper to move laterally so that the sandpaper contacts the workpiece to be polished for the grinding operation. When the grinding operation of the workpiece is completed, the moving device can be controlled to move laterally in the opposite direction to move away from the workpiece to be polished, and then the lifting device 1 can be controlled to descend to its original position to facilitate the grinding operation of the next workpiece to be polished.

[0032] In summary, the automatic feeding device for sandpaper provided by the present invention can achieve the purposes of precise sanding and rapid feeding of sandpaper, which is beneficial to improving the efficiency and effect of sandpaper sanding. In addition, the device has a compact structure and is easy to use, and can be promoted for use.

[0033] On the basis of the above embodiments, preferably, the mounting base plate 2 of the mobile device is arranged on the top of the lifting device 1, the storage device 26 and the forward device 27 are both arranged on the lifting base plate 3, the lifting base plate 3 is connected to the mounting base plate 2 by a connecting rod 4, the lifting base plate 3 is provided with an opening for the lifting device 1 to pass through, and rotating parts 5 for facilitating the transmission of sandpaper are provided on both sides of the opening, and reserved holes 6 for facilitating the passage of sandpaper are provided at positions corresponding to the rotating parts 5 of the mounting base plate 2, and a sandpaper holder 7 for changing the movement direction of the sandpaper is provided on the top of the mobile device, so that the sandpaper can be output by the storage device 26, and then pass through one side of the lifting device 1, the mobile device, and the other side of the lifting device 1, and finally be dragged by the forward device 27 to realize the sandpaper feeding operation.

[0034] It should be noted that the lifting device 1 can be fixed on the whole machine bottom plate 25 of the sandpaper automatic feeding device, and the lifting device 1 can pass through the whole machine bottom plate 25 to perform lifting and lowering movements. The lifting and lowering process of the lifting device 1 can drive the installation bottom plate 2 of the mobile device to rise and fall, and the installation bottom plate 2 can synchronously drive the lifting and lowering of the lifting bottom plate 3 during the lifting and lowering process. This process can ensure that the trajectory of the sandpaper feeding process remains unchanged, which is more conducive to ensuring the accurate and consistent sandpaper grinding position. The sandpaper movement trajectory 28 can be referred to Figure 4 The same reserved holes 6 can be set on the whole machine bottom plate 25 corresponding to the mounting bottom plate 2 to facilitate the passage and feeding of sandpaper.

[0035] It should also be noted that when the workpiece is being polished, the movement of the lifting device 1 and the moving device can be controlled so that one side of the sandpaper holder 7 is close to and in contact with the workpiece, thereby performing the workpiece polishing operation.

[0036] During actual use, the shape, size, structure, position, material, etc. of the mounting base plate 2, lifting base plate 3, connecting rod 4, opening, rolling element 20, reserved hole position 6 and sandpaper holder 7 can be determined according to actual conditions and actual needs.

[0037] Preferably, the moving device includes a moving bracket 8 for driving the sandpaper bracket 7 to move horizontally, a linear transmission device 9 for driving the moving bracket 8 to move horizontally, and an elastic module 10 for resetting the moving bracket 8. The sandpaper bracket 7 is arranged on the top of the moving bracket 8, and the linear transmission device 9 and the elastic module 10 are respectively arranged on the left and right sides of the moving bracket 8.

[0038] In this embodiment, when the moving device moves with the lifting device 1 to a height position flush with the polished workpiece, the linear conveying device 9 can be controlled to operate to drive the moving bracket 8 to move horizontally, so that the polished workpiece is placed on one side of the sandpaper bracket 7. When the polished workpiece is placed in place, the linear conveying device 9 can be controlled to stop working, and the moving bracket 8 can move in the opposite direction under the elastic force of the elastic module 10, so that the sandpaper bracket 7 is close to the polished workpiece, thereby facilitating subsequent polishing operations.

[0039] Preferably, the moving bracket 8 is movably arranged on the mounting base plate 2, and the mounting base plate 2 is provided with a linear guide rail 11 for limiting the movement trajectory of the moving bracket 8, that is, when the moving device moves laterally left and right, the moving bracket 8 and the sandpaper bracket 7 will not be offset in position, and the moving bracket 8 will only move laterally left and right along the linear guide rail 11, thereby ensuring that the movement trajectory of the sandpaper remains in a predetermined state, which is beneficial to ensure the accuracy and consistency of the sandpaper grinding position.

[0040] Preferably, a shock absorber 12 is provided between the linear conveyor 9 and the moving bracket 8, and the shock absorber 12 is used to reduce the impact force on the linear conveyor 9 when the moving bracket 8 is reset.

[0041] It should be noted that the shock-absorbing member 12 can be set as a buffer material member, so that when the moving bracket 8 is reset and moved under the elastic force of the elastic module 10, the impact force of the moving bracket 8 on the linear transmission device 9 can be effectively reduced, so as to avoid damage to the linear transmission device 9 and the moving bracket 8, which is beneficial to improving the service life of the device.

[0042] In actual use, the shape, size, structure, position, material, etc. of the motion bracket 8, the linear transmission device 9, the elastic module 10, the linear guide rail 11 and the shock absorber 12 can be determined according to actual conditions and actual needs.

[0043] On the basis of the above embodiments, preferably, the storage device 26 includes a storage bracket 13 vertically connected to the lifting base plate 3, a reel 14 for storing sandpaper, a transmission shaft 15 for driving the reel 14 to rotate, and a damping module 16 for ensuring that the reel 14 does not loosen. The sandpaper is wound around the outer periphery of the reel 14, the damping module 16 and the reel 14 are respectively arranged on both sides of the storage bracket 13, and the transmission shaft 15 passes through the damping module 16, the storage bracket 13 and the reel 14 in sequence.

[0044] It should be noted that when the lifting device 1 is lifted or lowered, the storage bracket 13 can be driven to lift or lower, and when the forward device 27 drags the sandpaper, the sandpaper can be rotated and output along the reel 14. Since the damping module 16 is provided, it can effectively ensure that the reel 14 is not loose and will not affect the smooth rotation of the reel 14, so that the sandpaper can be smoothly and continuously output.

[0045] Preferably, a clamping plate 17 for clamping the reel 14 and a locking member 18 for locking the reel 14 and the clamping plate 17 on the drive shaft 15 are provided on the side of the reel 14 away from the bracket. The clamping plate 17 is arranged to fit the reel 14, and the locking member 18 is connected to the end of the drive shaft 15, thereby effectively ensuring the fixing effect of the reel 14 to prevent the sandpaper in the reel 14 from loosening and affecting the feeding of the sandpaper. Therefore, the sandpaper can be effectively and continuously output when the reel 14 and the drive shaft 15 rotate.

[0046] In actual use, the shape, size, structure, position and material of the storage bracket 13, the reel 14, the transmission shaft 15, the damping module 16, the clamping plate 17 and the locking member 18 can be determined according to actual conditions and actual needs.

[0047] On the basis of the above embodiments, preferably, the forward device 27 includes an advancing bracket 19 vertically connected to the lifting base plate 3, a rolling member 20 for dragging the sandpaper feed, a driving member for driving the rolling member 20 to rotate, and a tensioning member 21 for pressing the rolling member 20 to tighten the sandpaper, the driving member and the tensioning member 21 are respectively arranged at both ends of the rolling member 20, and the rolling member 20 is connected to the forward bracket 19.

[0048] In this embodiment, the lifting device 1 can drive the forward bracket 19 to rise and fall synchronously when it is lifted and moved, and when the driving member starts to run, it can drive the rolling member 20 to roll, and the rolling member 20 can drag the sandpaper during the rolling process, so that the sandpaper can be output from the reel 14, and then go around one side of the lifting device 1, the sandpaper bracket 7 of the moving device, and the other side of the lifting device 1, and finally be pulled and fed by the rolling member 20.

[0049] Furthermore, since a tensioning member 21 is provided at one end of the rolling member 20, the tensioning member 21 can effectively press the rolling member 20, so that the sandpaper is effectively tightened when the rolling member 20 drags the sandpaper, which is beneficial to improving the feeding effect of the sandpaper and ensuring the movement trajectory of the sandpaper.

[0050] Preferably, the tensioning member 21 may be configured as a spring to effectively compress the rolling member 20 .

[0051] Preferably, the driving member includes a motor 22 and a rotating shaft 23 connected to the output shaft of the motor 22, and the rolling member 20 includes a main roller connected to the rotating shaft 23 for synchronous rotation and a slave roller for cooperating with the main roller to clamp and pull the sandpaper.

[0052] It should be noted that a connecting block 24 may be provided between the output shaft of the motor 22 and the rotating shaft 23 to improve the rotation stability of the rotating shaft 23. During use, the operator may control the rotation speed of the rotating shaft 23 by controlling the motor 22 to control the rotation speed of the main roller and the slave roller, and finally effectively control the feeding speed of the sandpaper to achieve uniform feeding of the sandpaper, which is beneficial to improving the sanding effect of the sandpaper.

[0053] It should also be noted that since the storage device 26 and the forward device 27 are both arranged on the lifting base plate 3 and are respectively located on both sides of the lifting device 1, and the lifting base plate 3 is connected to the mounting base plate 2 of the mobile device for synchronous movement, when the motor 22 is rotated to rotate the main roller and the slave roller to drag the sandpaper, it can ensure that the sandpaper moves at a uniform speed and distance in the predetermined trajectory, so as to ensure the continuous operation of the sandpaper feeding operation and help to ensure the accurate and consistent sandpaper grinding position. The automatic sandpaper feeding device provided by the present invention has a compact structure, a stable grinding effect, a precise grinding position, and the sandpaper can be automatically fed, which can be promoted for use.

[0054] In actual use, the shape, structure, size, position, etc. of the forward support 19, the rolling member 20, the driving member and the tensioning member 21 can be determined according to actual conditions and actual needs.

[0055] On the basis of the above embodiments, preferably, the lifting device 1 and the moving device are both reciprocating linear motion modules.

[0056] It should be noted that, since the moving device can drive the sandpaper to move horizontally left and right, the moving device can be set as a cylinder linear reciprocating module. Since the lifting device 1 can move up and down, the lifting device 1 can be set as an electric cylinder linear reciprocating motion module. Of course, in actual use, the lifting device 1 and the moving device can also be set as other types of reciprocating linear motion modules according to actual conditions and actual needs.

[0057] In addition, it should be noted that the directions or positional relationships indicated by "up and down", "left and right", etc. in this application are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of simplifying the description and facilitating understanding, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0058] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. Any combination of all embodiments provided by the present invention is within the protection scope of this invention and will not be described in detail here.

[0059] The above is a detailed introduction to the automatic feeding device for sandpaper provided by the present invention. This article uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the present invention, the present invention can also be improved and modified in a number of ways, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. An automatic feeding device for sandpaper, characterized in that: include: A storage device (26) for storing and outputting sandpaper, a forward device (27) for dragging the sandpaper to feed, a moving device (27) for driving the sandpaper to move horizontally to contact the workpiece to be polished, and a lifting device (1), wherein the storage device (26) and the forward device (27) are respectively located on both sides of the lifting device (1), the lifting device (1) is vertically connected to the moving device to drive the moving device to rise and fall, the storage device (26) and the forward device (27) are both connected in parallel to the moving device, and the sandpaper passes through the storage device (26), one side of the lifting device (1), the moving device, the other side of the lifting device (1), and the forward device (27) in sequence; the mounting base (2) of the moving device is arranged on the top of the lifting device (1), the storage device (26) and the forward device (27) are both arranged on the lifting base (3), the lifting base (3) is connected to the mounting base (2) by a connecting rod (4), and the lifting base (3) is provided with There is an opening for the lifting device (1) to pass through, and rotating parts (5) are correspondingly arranged on both sides of the opening for facilitating the transmission of sandpaper. The mounting base plate (2) and the rotating parts (5) are provided with reserved holes (6) for facilitating the passage of the sandpaper at corresponding positions. A sandpaper bracket (7) for changing the movement direction of the sandpaper is arranged on the top of the moving device. The advancing device (27) comprises an advancing bracket (19) vertically connected to the lifting base plate (3), a rolling part (20) for dragging the sandpaper to feed, a driving part for driving the rolling part (20) to rotate, and a tensioning part (21) for pressing the rolling part (20) to tighten the sandpaper, wherein the driving part and the tensioning part (21) are respectively arranged at two ends of the rolling part (20), and the rolling part (20) is connected to the advancing bracket (19). The lifting device (1) and the moving device are both reciprocating linear motion modules, wherein the moving device is a cylinder linear reciprocating module, and the lifting device (1) is an electric cylinder linear reciprocating module.

2. The automatic sandpaper feeding device according to claim 1, characterized in that: The moving device comprises a moving bracket (8) for driving the sandpaper bracket (7) to move horizontally, a linear transmission device (9) for driving the moving bracket (8) to move horizontally, and an elastic module (10) for resetting the moving bracket (8); the sandpaper bracket (7) is arranged on the top of the moving bracket (8), and the linear transmission device (9) and the elastic module (10) are respectively arranged on the left and right sides of the moving bracket (8).

3. The automatic sandpaper feeding device according to claim 2, characterized in that: The moving bracket (8) is movably arranged on the mounting base plate (2), and the mounting base plate (2) is provided with a linear guide rail (11) for limiting the movement trajectory of the moving bracket (8).

4. The automatic sandpaper feeding device according to claim 3, characterized in that: A shock absorber (12) is provided between the linear transmission device (9) and the moving bracket (8), and the shock absorber (12) is used to reduce the impact force applied to the linear transmission device (9) when the moving bracket (8) is reset.

5. The automatic feeding device for sandpaper according to any one of claims 1 to 4, characterized in that: The storage device (26) comprises a storage support (13) vertically connected to the lifting base plate (3), a reel (14) for storing the sandpaper, a transmission shaft (15) for driving the reel (14) to rotate, and a damping module (16) for ensuring that the reel (14) does not loosen, the sandpaper is wound around the outer periphery of the reel (14), the damping module (16) and the reel (14) are respectively arranged on both sides of the storage support (13), and the transmission shaft (15) passes through the damping module (16), the storage support (13) and the reel (14) in sequence.

6. The automatic sandpaper feeding device according to claim 5, characterized in that: A clamping plate (17) for clamping the reel (14) and a locking member (18) for locking the reel (14) and the clamping plate (17) on the transmission shaft (15) are provided on the side of the reel (14) away from the storage bracket (13); the clamping plate (17) is arranged in close contact with the reel (14), and the locking member (18) is connected to the end of the transmission shaft (15).

7. The automatic sandpaper feeding device according to any one of claims 1 to 4, characterized in that: The driving member comprises a motor (22) and a rotating shaft (23) connected to the output shaft of the motor (22); the rolling member (20) comprises a main roller connected to the rotating shaft (23) for synchronous rotation and a slave roller cooperating with the main roller to clamp and pull the sandpaper.

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