Abrasive paper supply mechanism and grinding device

Abstract

The invention discloses an abrasive paper supply mechanism and a grinding device, and relates to the technical field of grinding devices. A pair of conduction assemblies are symmetrically arranged, the conduction assemblies are located in the abrasive paper belt, through arrangement of the abrasive paper supply mechanism, the conduction assemblies can conduct and guide the abrasive paper belt, the abrasive paper supply assembly can supply, cut and limit abrasive paper, and the abrasive paper angle adjusting assembly can accurately adjust the angle of the abrasive paper. Through cooperation of the conduction assembly and the abrasive paper supply assembly, abrasive paper can be installed without measurement, the abrasive paper angle adjusting assembly is matched for use, the grinding angle can be adjusted in the installation process, and the situation that the abrasive paper is too tensioned is avoided; the abrasive paper supply mechanism and the shell can be conveniently installed, abrasive paper can be conveniently installed on the conduction assembly, angle adjustment of the abrasive paper on the conduction assembly is facilitated, and then operation, installation and production and manufacturing are facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of grinding devices, and in particular to a sandpaper supply mechanism and a grinding device. Background Art

[0002] The existing grinding devices are generally divided into handheld pneumatic grinding devices, handheld grinding wheel grinding devices, portable grinding devices and table grinding wheel grinding devices. In the actual use process of the portable grinding device, the sandpaper is made into a belt shape, and the grinding space is polished by transmission. However, if the sandpaper is polished for a long time during operation, it will overheat. When the sandpaper is overheated, the length will increase to a certain extent, which will cause the sandpaper to shift or fall off from the conduction wheel, thereby affecting the grinding work. At the same time, the sandpaper supply mechanism is not installed on the device, and the sandpaper roll needs to be carried when traveling. The belt is inconvenient to use, and a tool needs to be carried to assist in using the sandpaper roll. The sandpaper roll will become loose during the pulling process during the installation process, which will cause the sandpaper roll to be messy. If the sandpaper belt is directly made and then installed, it is necessary to measure the size and cut it. The sandpaper needs to be adjusted by adjusting the sandpaper belt tension adjustment wheel if it is too long or too short, which makes the installation more troublesome. In addition, when adjusting the angle with the angle adjustment wheel, it is sometimes necessary to adjust the sandpaper belt tension adjustment wheel to avoid the sandpaper belt being too loose or too tight. The operation is more complicated. Therefore, a sandpaper supply mechanism and a grinding device are proposed to solve the above problems. Summary of the invention

[0003] The purpose of the present invention is to provide a sandpaper supply mechanism and a grinding device, which solves the problems that the sandpaper is shifted or falls off due to overheating during the transmission process, the sandpaper roll is inconvenient to carry, the supply is inconvenient and easy to be messy, and the operation is troublesome, and the sandpaper tension adjustment wheel must be adjusted when adjusting the angle.

[0004] The present invention solves the above technical problems through the following technical solutions, which include: A pair of sandpaper belts; A pair of conductive components are symmetrically arranged, and the conductive components are arranged inside the sandpaper belt; The conduction assembly comprises a conduction bracket sleeved in the sandpaper belt, the conduction bracket is rotatably connected with a first conduction roller, a second conduction roller and a third conduction roller, and the first conduction roller, the second conduction roller and the third conduction roller are in contact with the inner wall of the sandpaper belt; A sandpaper supply assembly, the sandpaper supply assembly comprising a mounting frame fixedly connected to the conductive bracket and a sandpaper winding unit mounted on the mounting frame, the sandpaper winding unit is limited and cut by the mounting frame; A sandpaper angle adjustment component, the sandpaper angle adjustment component includes a sandpaper angle adjustment unit rotatably connected to the conductive bracket, the sandpaper angle adjustment unit is connected to the sandpaper belt, the sandpaper angle adjustment unit drives the angle of the sandpaper belt to be synchronously adjusted when it flips into the conductive bracket, the sandpaper angle adjustment unit is provided with a flipping limit unit located in the conductive bracket cavity, the flipping limit unit can guide the sandpaper angle adjustment unit when it flips and position it when it flips to a suitable angle.

[0005] Preferably, the conductive bracket includes a first mounting cavity, one end of which is fixedly connected with a first guide plate, a second mounting cavity, a second guide plate, a third mounting cavity, a third guide plate and a fourth mounting cavity in sequence, the first guide plate and the second guide plate are both provided with process holes, the third guide plate is provided with a flip hole, the sandpaper angle adjustment unit is rotatably connected to the flip hole, the second mounting cavity is rotatably connected to the first conductive roller via a rotating shaft, the third mounting cavity is rotatably connected to the second conductive roller via a rotating shaft, and the fourth mounting cavity is rotatably connected to the third conductive roller via a rotating shaft, the first guide plate, the second guide plate and the third guide plate each include a C-shaped connecting plate and a C-shaped baffle fixed to both side walls of the C-shaped connecting plate, wherein the C-shaped baffle fixed on the inner side of the first guide plate and the C-shaped baffle fixed on the inner side of the third guide plate are both fixedly connected with a single-ear double-hole plate, a sliding groove is formed between a pair of the C-shaped baffles and the C-shaped connecting plate, and the sandpaper belt is located in the sliding groove.

[0006] Preferably, the first mounting cavity includes a first curved plate fixed to one end of the C-shaped connecting plate, the outer side wall of the first curved plate is fixedly connected to a first single ear plate fixed to the C-shaped baffle plate, the second mounting cavity, the third mounting cavity and the fourth mounting cavity each include a second curved plate and a second single ear plate fixedly connected to both side walls of the second curved plate, the second curved plate is fixedly connected to the C-shaped connecting plate, the second single ear plate is fixedly connected to the C-shaped baffle plate, and a pair of C-shaped baffle outer side walls located at the third guide plate are provided with placement grooves.

[0007] Preferably, the mounting frame includes a pair of connecting support plates arranged between the first mounting cavity and the fourth mounting cavity, one of the connecting support plates is fixedly connected to the first mounting cavity, and the other connecting support plate is fixedly connected to the fourth mounting cavity, and one side wall of the pair of connecting support plates away from each other is fixedly connected to a side plate, one end of the side plate is fixedly connected to a straight plate, the pair of straight plates are symmetrically arranged, the top of the straight plate is provided with a positioning groove, the pair of positioning grooves are symmetrically arranged, the outer wall of the straight plate is provided with a through hole, a long rod with an end passing through the through hole is provided between the pair of straight plates, both ends of the long rod are fixedly connected to a limiting block, the bottom is fixedly connected to a long cutting knife, and a material guide roller rotatably connected to the pair of straight plates is provided below the long cutting knife.

[0008] Preferably, the sandpaper winding unit comprises a winding frame clamped in a pair of the clamping slots, a sandpaper roll is wound on the winding frame, and one end of the sandpaper roll passes between the long cutting knife and the material guide roller.

[0009] Preferably, the connecting support plate is arranged in an L shape, the height of one end of the connecting support plate close to the first installation cavity is lower than the height of the other end, and the connecting support plate is provided with reinforcing ribs.

[0010] Preferably, the sandpaper angle adjustment unit includes a flip plate rotatably connected to the flip hole, the outer wall of the flip plate is fixedly connected to a flip rod passing through the flip hole, and one end of the flip rod is rotatably connected to a pressing roller that fits the outer wall of the sandpaper belt.

[0011] Preferably, the flip limiting unit includes an arc-shaped fixing block fixedly connected to the fourth mounting cavity, the arc-shaped fixing block is fixedly connected to a support rod, the support rod is provided with an inclined hole, a guide rod fixedly connected to the side wall of the flip plate is inserted into the inclined hole, a spring fixedly connected between the flip plate and the support rod is sleeved on the guide rod, a threaded hole connected to the inclined hole is provided at the top of the support rod, a bolt that interferes with the guide rod is threaded in the threaded hole.

[0012] Preferably, the flip rod is arranged in a curved shape, and the flip plate is arranged in a C shape.

[0013] The present invention also proposes a grinding device, comprising a shell and a double-axis motor fixedly installed in the shell, the output shafts at both ends of the double-axis motor are fixedly connected to a driving wheel located on the outside of the shell through a coupling, the two inner side walls of the shell are fixedly connected to an operating table, the operating table includes a fixedly connected side panel and an operating panel, a pair of sandpaper belts are located on both sides of the shell, the driving wheel is located in the first arc plate, and is rotatably connected to the first single-ear plate through a rotating rod, the single-ear double-hole plate is fixedly connected to the side wall of the shell by bolts and nuts, the bottom of the operating panel is in contact with the bottom of the placement groove, and fits with the sandpaper belt.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. The present invention provides a sandpaper supply mechanism, and integrates the conduction component, the sandpaper supply component and the sandpaper angle adjustment component, so as to facilitate the installation of the sandpaper supply mechanism and the housing, the installation of the sandpaper on the conduction component, and the angle adjustment of the sandpaper on the conduction component, thereby facilitating operation, installation and manufacturing.

[0015] 2. By setting up the conduction component, the sandpaper belt can be conducted and guided to prevent the sandpaper belt from deflecting or falling off when overheated.

[0016] 3. By setting up the sandpaper supply component, sandpaper supply, cutting and limiting can be provided, thus avoiding the problems of inconvenient carrying, inconvenient supply and easy disorder of sandpaper rolls, avoiding the carrying of auxiliary tools and avoiding the more cumbersome operation process.

[0017] 4. By setting the sandpaper angle adjustment component, the angle of the sandpaper can be accurately adjusted, which is simple and convenient to operate and avoids complicated operation process.

[0018] 5. Through the cooperation of the conduction component and the sandpaper supply component, the sandpaper can be installed without measurement, and there is no need to worry about the sandpaper being cut too long or too short. It is also equipped with a sandpaper angle adjustment component. During installation, the grinding angle can be adjusted first to avoid the sandpaper being too tight. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the sandpaper supply mechanism and the grinding device in the present invention in the first perspective; Figure 2 It is a schematic diagram of the third perspective structure of the sandpaper supply mechanism and the grinding device in the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of the conducting component, the sandpaper supply component and the sandpaper angle adjustment component; Figure 4 for Figure 3 The enlarged structural diagram at A in the middle; Figure 5 for Figure 3 The middle part is a schematic diagram of the enlarged structure from the first perspective; Figure 6 for Figure 5 A schematic diagram of the second perspective magnified structure; Figure 7 It is a structural schematic diagram of the sandpaper angle adjustment unit and the flip limit unit in a partial cross-section.

[0020] The numbers in the figure represent: 1. Shell; 2. Dual-axis motor; 3. Operation table; 4. Conducting assembly; 41. Conducting bracket; 411. First installation cavity; 412. First guide plate; 413. Process hole; 414. Second installation cavity; 415. Second guide plate; 417. Third installation cavity; 418. Third guide plate; 419. Turning hole; 420. Fourth installation cavity; 43. First conducting roller; 44. Second conducting roller; 45. Third conducting roller; 5. Sandpaper supply assembly Parts; 51, connecting support plate; 52, side plate; 53, straight plate; 54, positioning groove; 55, winding frame; 56, sandpaper roll; 57, guide support roller; 58, through hole; 59, long rod; 510, long cutting knife; 6, sandpaper angle adjustment component; 61, flip plate; 62, flip rod; 63, pressure roller; 64, arc fixing block; 65, support rod; 66, guide rod; 67, spring; 68, bolt; 7, sandpaper belt; 8, driving wheel. DETAILED DESCRIPTION

[0021] The above and other technical features and advantages of the present invention are described in more detail below in conjunction with the accompanying drawings.

[0022] The present invention provides a technical solution: a sandpaper supply mechanism, such as Figure 1 , Figure 2 As shown, it includes a pair of sandpaper belts 7; a pair of symmetrically arranged conductive components 4, the conductive components 4 are arranged inside the sandpaper belt 7; the conductive components 4 include a conductive bracket 41 sleeved inside the sandpaper belt 7, the conductive bracket 41 is rotatably connected to a first conductive roller 43, a second conductive roller 44 and a third conductive roller 45, the first conductive roller 43, the second conductive roller 44 and the third conductive roller 45 are in contact with the inner wall of the sandpaper belt 7; a sandpaper supply component 5, the sandpaper supply component 5 includes a mounting frame fixedly connected to the conductive bracket 41 and a sandpaper winding unit installed on the mounting frame, The sandpaper winding unit is limited and cut by the mounting frame; the sandpaper angle adjustment component 6 includes a sandpaper angle adjustment unit rotatably connected to the conductive bracket 41, the sandpaper angle adjustment unit is connected to the sandpaper belt 7, and the sandpaper angle adjustment unit drives the angle of the sandpaper belt 7 to be synchronously adjusted when it is flipped into the conductive bracket 41. The sandpaper angle adjustment unit is provided with a flipping limiting unit located in the cavity of the conductive bracket 41, and the flipping limiting unit can guide the sandpaper angle adjustment unit when it is flipped and position it when it is flipped to a suitable angle.

[0023] like Figure 3 , Figure 5 , Figure 6As shown, the conductive bracket 41 includes a first installation cavity 411, and one end of the first installation cavity 411 is fixedly connected with a first guide plate 412, a second installation cavity 414, a second guide plate 415, a third installation cavity 417, a third guide plate 418 and a fourth installation cavity 420 in sequence. The first guide plate 412 and the second guide plate 415 are both provided with a process hole 413, and the third guide plate 418 is provided with a flip hole 419. The sandpaper angle adjustment unit is rotatably connected to the flip hole 419. The second installation cavity 414 is rotatably connected to the first conductive roller 43 through a rotating shaft, the third installation cavity 417 is rotatably connected to the second conductive roller 44 through a rotating shaft, and the fourth installation cavity 420 is rotatably connected to the third conductive roller 45 through a rotating shaft. The first conductive roller 43, the second conductive roller 44 and the third conductive roller 45 are installed on the conductive bracket 41 to realize The present invention is integrated, so that the structure is simple and easy to manufacture, which is not only convenient for overall installation and disassembly, but also convenient for the conduction and guidance of the sandpaper belt 7. The first guide plate 412, the second guide plate 415 and the third guide plate 418 all include a C-shaped connecting plate and a C-shaped baffle fixed to the two side walls of the C-shaped connecting plate, wherein the C-shaped baffle fixed on the inner side of the first guide plate 412 and the C-shaped baffle fixed on the inner side of the third guide plate 418 are fixedly connected with a single-ear double-hole plate, and the single-ear double-card plate is arranged to facilitate the installation of the conduction bracket 41, and a sliding groove is formed between a pair of C-shaped baffles and the C-shaped connecting plate. The sandpaper belt 7 is located in the sliding groove, and the sliding groove is arranged to guide the sandpaper belt 7 to prevent the sandpaper belt 7 from being offset or even falling off during the transmission process on the first conduction roller 43, the second conduction roller 44 and the third conduction roller 45.

[0024] The first installation cavity 411 includes a first curved plate fixed to one end of the C-shaped connecting plate, and the outer wall of the first curved plate is fixedly connected to a first single-ear plate fixed to the C-shaped baffle. The second installation cavity 414, the third installation cavity 417 and the fourth installation cavity 420 all include a second curved plate and a second single-ear plate fixedly connected to the two side walls of the second curved plate, the second curved plate is fixedly connected to the C-shaped connecting plate, and the second single-ear plate is fixedly connected to the C-shaped baffle. The first curved plate is provided to prevent the driving wheel 8 from being interfered with when rotating, and the second The arc plate is provided to avoid interference between the first conduction roller 43, the second conduction roller 44 and the third conduction roller 45 during rotation; the first single-ear plate is provided to shield and protect the driving wheel 8 to avoid damage caused by accidental touch when the driving wheel 8 rotates; the second single-ear plate is provided to facilitate the installation and protection of the first conduction roller 43, the second conduction roller 44 and the third conduction roller 45; a pair of C-shaped baffle outer walls located at the third guide plate 418 are provided with placement grooves to prevent the C-shaped baffle from blocking the grinding of the grinding part.

[0025] like Figures 3 to 6As shown, the mounting frame includes a pair of connecting support plates 51 arranged between the first mounting cavity 411 and the fourth mounting cavity 420, one of the connecting support plates 51 is fixedly connected to the first mounting cavity 411, and the other connecting support plate 51 is fixedly connected to the fourth mounting cavity 420. The connecting support plate 51 is arranged in an L shape, and the height of one end of the connecting support plate 51 close to the first mounting cavity 411 is lower than the height of the other end. In order to avoid the sandpaper winding unit being installed too low to affect the use of the sandpaper belt 7, and to avoid the sandpaper and the sandpaper belt 7 from conflicting and being unable to be supplied, the connecting support plate 51 is provided with reinforcing ribs. In order to strengthen the structural strength of the connecting support plate 51, one side wall of the pair of connecting support plates 51 away from each other is fixedly connected with a side plate 52, and one end of the side plate 52 is fixedly connected with a straight plate 53. The straight plate 53 is symmetrically arranged, and a locking groove 54 is provided at the top of the straight plate 53. A pair of locking grooves 54 are symmetrically arranged. The cooperation of the connecting support plate 51, the side plate 52, the straight plate 53 and the locking groove 54 is to facilitate the installation and support of the sandpaper winding unit. A through hole 58 is provided on the outer wall of the straight plate 53. The through hole 58 includes a first waist-shaped groove provided on the inner wall of the straight plate 53 and a second waist-shaped groove provided on the outer wall of the straight plate 53. The size of the second waist-shaped groove is larger than that of the first waist-shaped groove. A long rod 59 with an end passing through the through hole 58 is provided between the pair of straight plates 53. Both ends of the long rod 59 are fixedly connected to a limiting block. The cooperation between the limiting block and the through hole 58 is to prevent the long rod 59 from falling off from the through hole 58. The limiting block has the same size as the second waist-shaped groove. A gap is provided between the top of the long rod 59 and the inner top of the through hole 58, and a long cutting knife 510 is fixedly connected to the bottom. The function of the long cutting knife 510 is to cut the sandpaper roll 56. When the limit block is pulled and the limit block is pressed, the long rod 59 drives the long cutting knife 510 to move. When the long cutting knife 510 contacts the sandpaper roll 56, it cuts it, and the sandpaper roll 56 is cut. The gap is provided to prevent the long cutting knife 510 from scratching the sandpaper roll 56 due to lack of moving space when the sandpaper roll 56 is pulled, thereby preventing the sandpaper roll 56 from being obstructed when being pulled, and preventing the sandpaper roll 56 from being damaged due to scratching. A guide rotatably connected between a pair of straight plates 53 is provided below the long cutting knife 510. The material support roller 57 is provided to facilitate the rapid transmission of the sandpaper roll 56 when it is pulled. At the same time, the long cutting knife 510 can cooperate to limit the sandpaper roll 56 that is not pulled, and can also assist the long cutting knife 510 to cut the sandpaper roll 56. When cutting, the sandpaper roll 56 will conflict with the material guide roller 57, so that the sandpaper roll 56 cannot move downward. The sandpaper winding unit includes a winding frame 55 clamped in a pair of clamping grooves 54, and the sandpaper roll 56 is wound on the winding frame 55. The winding frame 55 includes a pair of T-shaped clamping rods and a winding roller rotatably connected between the pair of T-shaped clamping rods. The sandpaper roll 56 is wound on the winding roller, and the T-shaped clamping rod is clamped with the clamping groove 54. One end of the sandpaper roll 56 passes through between the long cutting knife 510 and the material guide roller 57.The connecting support plate 51, the side plate 52 and the straight plate 53 are an integrated structure with the conductive bracket 41. During use, one end of the sandpaper roll 56 can be pulled from under the third conductive roller 45 to make it stick to the second conductive roller 44, the first conductive roller 43 and the driving wheel 8, and then contact with the long cutter 510, and it is cut by the long cutter 510. On the way, it passes between the pressing roller 63 and the flip plate 61. If the grinding angle of the sandpaper roll 56 needs to be adjusted, the sandpaper angle adjustment component 6 can be operated in advance to avoid the sandpaper roll 56 being too tight when adjusting the angle. Finally, the cut-off port can be fixed to the other port.

[0026] like Figure 3 , Figure 7 As shown, the sandpaper angle adjustment unit includes a flip plate 61 rotatably connected to the flip hole 419, the outer wall of the flip plate 61 is fixedly connected to a flip rod 62 passing through the flip hole 419, one end of the flip rod 62 is rotatably connected to a pressure roller 63 that fits the outer wall of the sandpaper belt 7, through the cooperation of the flip plate 61, the flip rod 62 and the pressure roller 63, when the flip plate 61 is rotated, the flip rod 62 will be pulled to move, and then the pressure roller 63 will be moved, and then the sandpaper belt 7 will be pulled to tilt, further allowing the sanding angle of the sandpaper belt 7 to be adjusted, and the flip limiting unit includes an arc-shaped fixed block 64 fixedly connected to the fourth mounting cavity 420, the arc-shaped fixed block 64 is fixedly connected to a support rod 65, the support rod 65 is provided with an inclined hole, and a guide rod 66 fixedly connected to the side wall of the flip plate 61 is inserted into the inclined hole, the guide rod 66 is arranged in an arc shape, and is sleeved with a The spring 67 is fixedly connected between the flip plate 61 and the support rod 65. The top end of the support rod 65 is provided with a threaded hole connected to the inclined hole. A bolt 68 that conflicts with the guide rod 66 is screwed in the threaded hole. The flip rod 62 is set in a curved shape, and the shape of the flip plate 61 is set in a C shape. During use, the flip limit unit is used in conjunction with the sandpaper angle adjustment unit. First, the bolt 68 is screwed to prevent it from conflicting with the guide rod 66, so that the flip plate 61 can be rotated. When the flip plate 61 rotates, the guide rod 66 will slide in the inclined hole, and the spring 67 will be compressed. When the pressure roller 63 acts on the sandpaper belt 7 at a certain angle, the bolt 68 is screwed to make it conflict with the guide rod 66 again, so that the guide rod 66 can be limited, and further the flip plate 61, the flip rod 62 and the pressure roller 63 can be limited, so that the sandpaper belt 7 can be limited.

[0027] The present invention also provides a technical solution: a grinding device, such as Figures 1 to 7As shown, it includes a shell 1 and a double-axis motor 2 fixedly installed in the shell 1, the output shafts at both ends of the double-axis motor 2 are fixedly connected to the driving wheel 8 located on the outside of the shell 1 through a coupling, the two inner side walls of the shell 1 are fixedly connected to the operating table 3, the operating table 3 includes a fixedly connected side plate and an operating panel, and also includes a sandpaper supply mechanism according to any one of claims 1 to 9, a pair of sandpaper belts 7 are located on both sides of the shell 1, the driving wheel 8 is located in the first arc plate, and is rotatably connected to the first single-ear plate through a rotating rod, the single-ear double-hole plate is fixedly connected to the side wall of the shell 1 by bolts and nuts, and the bottom of the operating panel is in contact with the bottom of the placement groove and fits with the sandpaper belt 7.

[0028] The above are only preferred embodiments of the present invention, which are only illustrative and not restrictive. Those skilled in the art understand that many changes, modifications, and even equivalences may be made to the present invention within the spirit and scope defined by the claims, but all of them will fall within the scope of protection of the present invention.

Claims

1. A sandpaper supply mechanism, characterized in that: include: a pair of sandpaper belts (7); A pair of symmetrically arranged conducting components (4), wherein the conducting components (4) are arranged inside the sandpaper belt (7); The conduction component (4) comprises a conduction bracket (41) sleeved in the sandpaper belt (7), the conduction bracket (41) being rotatably connected to a first conduction roller (43), a second conduction roller (44) and a third conduction roller (45), the first conduction roller (43), the second conduction roller (44) and the third conduction roller (45) being in contact with the inner wall of the sandpaper belt (7); A sandpaper supply assembly (5), the sandpaper supply assembly (5) comprising a mounting frame fixedly connected to the conductive bracket (41) and a sandpaper winding unit mounted on the mounting frame, the sandpaper winding unit being limited and cut by the mounting frame; A sandpaper angle adjustment component (6), the sandpaper angle adjustment component (6) comprising a sandpaper angle adjustment unit rotatably connected to a conductive bracket (41), the sandpaper angle adjustment unit being connected to the sandpaper belt (7), the sandpaper angle adjustment unit driving the sandpaper belt (7) to synchronously adjust its angle when it turns over into the conductive bracket (41), the sandpaper angle adjustment unit being provided with a turning limit unit located in the cavity of the conductive bracket (41), the turning limit unit being able to guide the sandpaper angle adjustment unit when it turns over and to position it when it turns over to a suitable angle.

2. A sandpaper supply mechanism as claimed in claim 1, characterized in that: The conductive support (41) comprises a first installation cavity (411), one end of the first installation cavity (411) being fixedly connected in sequence to a first guide plate (412), a second installation cavity (414), a second guide plate (415), a third installation cavity (417), a third guide plate (418) and a fourth installation cavity (420), the first guide plate (412) and the second guide plate (415) being provided with a process hole (413), the third guide plate (418) being provided with a flip hole (419), the sandpaper angle adjustment unit being rotatably connected to the flip hole (419), and the second installation cavity (414) being rotatably connected to the first conductive roller (43) via a rotating shaft. The third installation cavity (417) is rotationally connected to the second conduction roller (44) via a rotating shaft, and the fourth installation cavity (420) is rotationally connected to the third conduction roller (45) via a rotating shaft. The first guide plate (412), the second guide plate (415) and the third guide plate (418) all include a C-shaped connecting plate and a C-shaped baffle plate fixed to the two side walls of the C-shaped connecting plate, wherein the C-shaped baffle plate fixed on the inner side of the first guide plate (412) and the C-shaped baffle plate fixed on the inner side of the third guide plate (418) are both fixedly connected with a single-ear double-hole plate, and a sliding groove is formed between the pair of C-shaped baffle plates and the C-shaped connecting plate, and the sandpaper belt (7) is located in the sliding groove.

3. A sandpaper supply mechanism as claimed in claim 2, characterized in that: The first installation cavity (411) comprises a first curved plate fixed to one end of the C-shaped connecting plate, the outer side wall of the first curved plate is fixedly connected to a first single ear plate fixed to the C-shaped baffle plate, the second installation cavity (414), the third installation cavity (417) and the fourth installation cavity (420) all comprise a second curved plate and a second single ear plate fixedly connected to both side walls of the second curved plate, the second curved plate is fixedly connected to the C-shaped connecting plate, the second single ear plate is fixedly connected to the C-shaped baffle plate, and a pair of C-shaped baffle outer side walls located at the third guide plate (418) are provided with placement grooves.

4. A sandpaper supply mechanism as claimed in claim 3, characterized in that: The mounting frame comprises a pair of connecting support plates (51) arranged between the first mounting cavity (411) and the fourth mounting cavity (420), wherein one of the connecting support plates (51) is fixedly connected to the first mounting cavity (411), and the other connecting support plate (51) is fixedly connected to the fourth mounting cavity (420), and one side wall of the pair of connecting support plates (51) that is away from each other is fixedly connected to a side plate (52), and one end of the side plate (52) is fixedly connected to a straight plate (53), and the pair of straight plates (53) are fixedly connected to each other. ) are symmetrically arranged, a positioning groove (54) is provided at the top of the straight plate (53), a pair of the positioning grooves (54) are symmetrically arranged, a through hole (58) is provided on the outer wall of the straight plate (53), a long rod (59) with an end passing through the through hole (58) is provided between the pair of straight plates (53), both ends of the long rod (59) are fixedly connected to the limiting blocks, a long cutting knife (510) is fixedly connected to the bottom, and a material guide support roller (57) rotatably connected between the pair of straight plates (53) is provided below the long cutting knife (510).

5. A sandpaper supply mechanism as claimed in claim 4, characterized in that: The sandpaper winding unit comprises a winding frame (55) clamped in a pair of clamping slots (54), a sandpaper roll (56) being wound on the winding frame (55), and one end of the sandpaper roll (56) passing between the long cutting knife (510) and the material guide support roller (57).

6. A sandpaper supply mechanism as claimed in claim 4, characterized in that: The connecting support plate (51) is arranged in an L shape, the height of one end of the connecting support plate (51) close to the first installation cavity (411) is lower than the height of the other end, and a reinforcing rib is provided on the connecting support plate (51).

7. A sandpaper supply mechanism as claimed in claim 2, characterized in that: The sandpaper angle adjustment unit comprises a flip plate (61) rotatably connected to the flip hole (419); an outer side wall of the flip plate (61) is fixedly connected to a flip rod (62) passing through the flip hole (419); one end of the flip rod (62) is rotatably connected to a pressing roller (63) in contact with the outer side wall of the sandpaper belt (7).

8. A sandpaper supply mechanism as claimed in claim 7, characterized in that: The flip limit unit comprises an arc-shaped fixed block (64) fixedly connected to the fourth mounting cavity (420), a support rod (65) fixedly connected to the arc-shaped fixed block (64), an inclined hole formed on the support rod (65), a guide rod (66) fixedly connected to the side wall of the flip plate (61) inserted into the inclined hole, a spring (67) fixedly connected between the flip plate (61) and the support rod (65) sleeved on the guide rod (66), a threaded hole connected to the inclined hole formed at the top end of the support rod (65), a bolt (68) in contact with the guide rod (66) being screwed into the threaded hole.

9. A sandpaper supply mechanism as claimed in claim 8, characterized in that: The flip rod (62) is arranged in a curved shape, and the flip plate (61) is arranged in a C-shape.

10. A grinding device, comprising a housing (1) and a double-shaft motor (2) fixedly mounted in the housing (1), wherein the output shafts at both ends of the double-shaft motor (2) are fixedly connected to a driving wheel (8) located outside the housing (1) through a coupling, and the two inner side walls of the housing (1) are fixedly connected to an operating table (3), and the operating table (3) includes a fixedly connected side plate and an operating panel, characterized in that: It also includes the sandpaper supply mechanism according to any one of claims 1 to 9, wherein a pair of the sandpaper belts (7) are located on both sides of the housing (1), the driving wheel (8) is located in the first arc-shaped plate and is rotatably connected to the first single-ear plate through a rotating rod, the single-ear double-hole plate is fixedly connected to the side wall of the housing (1) through bolts and nuts, and the bottom of the operating panel is in contact with the bottom of the placement groove and fits the sandpaper belt (7).

Images