Uniform grinding device for rubber and plastic slicing

Abstract

The utility model discloses a uniform polishing device for rubber and plastic slicing, and relates to the technical field of rubber and plastic slicing. L-shaped connecting frames are fixedly connected to the two positions of the upper sides of the two stable bottom plates correspondingly, the two L-shaped connecting frames on the upper side of the same stable bottom plate correspond to each other, a sliding frame is fixedly connected to the lower side of each L-shaped connecting frame, an L-shaped sliding rod is slidably connected to the interior of each sliding frame, and a supporting seat is fixedly connected between the two stable bottom plates; a lifting assembly is arranged on the upper side of the supporting seat, L-shaped sliding rods are connected with the lifting assembly through hinge rods, guide assemblies are arranged in the middles of the upper sides of the two stable bottom plates, grinding assemblies are arranged on the inner sides of the two L-shaped sliding rods on the same side, and limiting assemblies are arranged on the outer sides of the grinding assemblies. According to the rubber and plastic grinding device, automatic grinding treatment can be achieved, grinding is convenient and stable, grinding can be conducted according to rubber and plastic of different thicknesses and widths, the grinding efficiency is high, grinding is convenient and uniform, and practicability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of rubber and plastic planing, in particular to a uniform grinding device for rubber and plastic planing. Background Art

[0002] Rubber and plastic is a general term for the rubber and plastic industries. They are all by-products of petroleum. They have the same source, but in the process of making products, their physical properties are different and their uses are even more different.

[0003] When rubber and plastic are planed, they usually need to be cut. After cutting, the cut surface of the rubber and plastic is mostly rough and has burrs, so it needs to be polished. At present, the polishing of the cut surface of rubber and plastic is mostly manual, and the polishing efficiency is low. It is inconvenient to make corresponding adjustments according to rubber and plastic materials of different widths. For this reason, we propose a uniform polishing device for rubber and plastic planing. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the existing defects and provide a uniform grinding device for rubber and plastic planing, which can realize automatic grinding processing, and the grinding is convenient and stable. It can also grind rubber and plastic according to different thicknesses and widths, has high grinding efficiency, is convenient for uniform grinding, and has high practicality, and can effectively solve the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a uniform grinding device for rubber and plastic planing includes a stable bottom plate;

[0006] There are two stable base plates, and two upper sides of the two stable base plates are fixedly connected with L-shaped connecting frames, and the two L-shaped connecting frames on the upper side of the same stable base plate correspond to each other. The lower side of each L-shaped connecting frame is fixedly connected with a sliding frame, and the interior of each sliding frame is slidably connected with an L-shaped sliding rod. A support seat is fixedly connected between the two stable base plates. A lifting assembly is provided on the upper side of the support seat, and the L-shaped sliding rod is connected to the lifting assembly through a hinge rod. A guide assembly is provided in the middle part of the upper side of the two stable base plates, and a grinding assembly is provided on the inner side of the two L-shaped sliding rods on the same side, and a limit assembly is provided on the outer side of the grinding assembly.

[0007] The lifting assembly includes a cylinder, a cylinder is fixedly installed on the middle part of the upper side of the support seat, the upper output end of the cylinder is fixedly connected to a connecting plate 1, the left and right sides of the connecting plate 1 are respectively fixedly connected to the middle parts of two connecting cross bars, a sliding sleeve is fixedly connected to the middle part of the outer side of the connecting cross bar, the sliding sleeve is connected to the guide assembly, one end of the articulated rod is hinged to the connecting cross bar, the other end of the articulated rod is hinged to the corner of the L-shaped sliding bar, three evenly distributed connecting vertical rods are fixedly connected to the upper side of the connecting plate 1, and clamping assemblies are provided on the outer sides of the two outer connecting vertical rods, and the tops of the three connecting vertical rods are fixedly connected to the bottom of the U-shaped workbench.

[0008] Starting the cylinder can push the connecting plate 1, driving it to move up and down, and at the same time drive the fixed connecting cross bar to move up and down. At the same time, due to the hinge of the hinged rod, the L-shaped sliding bar can be driven to slide horizontally in the sliding frame, so that automatic grinding can be achieved. The grinding is convenient and stable, and it can be polished according to rubber and plastic of different thicknesses and widths. The grinding efficiency is high and it is easy to grind evenly.

[0009] Furthermore, the guide assembly includes a stabilizing guide rod, a top seat and a U-shaped connecting frame. The middle parts of the two stabilizing base plates are fixedly connected with a stabilizing guide rod, the top of the stabilizing guide rod is fixedly connected with a top seat, the sliding sleeve is slidably connected to the stabilizing guide rod, and the outer side of the top seat is fixedly connected to the L-shaped connecting frame via a U-shaped connecting frame.

[0010] The stabilizing guide rod is used to provide guidance for the up and down movement of the connecting cross bar, so that the up and down movement of the connecting cross bar is in the vertical direction. The setting of the top seat and the U-shaped connecting frame can improve the stability of the device and facilitate the grinding process.

[0011] Furthermore, the clamping assembly includes an electric telescopic rod, a second connecting plate, a splint and a rubber pad, the outer sides of the two outer connecting vertical rods are fixedly connected to the electric telescopic rod, the output ends of the two electric telescopic rods are fixedly connected to the second connecting plate, the inner side of the second connecting plate is fixedly connected to the splint, and the inner side of the splint is fixedly connected to the rubber pad.

[0012] By controlling the extension of the electric telescopic rod, the splint can clamp and fix the two ends of the rubber and plastic, which can ensure the stability of the rubber and plastic during the grinding process and prevent its movement from affecting the grinding process. The rubber pad can protect the rubber and plastic from being squeezed and damaged, thereby improving the utilization rate of the device.

[0013] Furthermore, the grinding assembly includes a grinding roller, a driving motor and a motor seat. There are two grinding rollers and the two grinding rollers are connected through a transmission assembly. The front sides of the two grinding rollers are connected to the transmission assembly, the rear side of the left grinding roller is fixedly connected to the output shaft of the driving motor, and the rear connecting shaft of the right grinding roller is rotatably connected to the L-shaped sliding rod.

[0014] Starting the drive motor can drive the grinding roller on the left to rotate. The rotation of the grinding roller on the left drives the grinding roller on the right to rotate through the transmission component, so that the rubber and plastic can be polished with high grinding efficiency and uniform grinding.

[0015] Furthermore, the transmission assembly includes pulley one, pulley two and a belt. The front side of the grinding roller on the left is fixedly connected to pulley one via a connecting shaft, and the front side of the grinding roller on the right is fixedly connected to pulley two via a connecting shaft. Pulley one and pulley two are both rotatably connected to the L-shaped sliding rod on the front side, and pulley one is connected to pulley two via a belt.

[0016] The rotation of the grinding roller on the left side can drive the pulley 1 to rotate, and the rotation of the pulley 1 can be transmitted to the pulley 2 through the belt, thereby driving the grinding roller on the right side to rotate, so that both ends of the rubber and plastic can be evenly polished at the same time.

[0017] Furthermore, the limit assembly includes a supporting cross plate, a U-shaped limit seat, a fixed seat, a rotating block, a handle, a limit block and a limit plate, the two L-shaped sliding bars on the same side are fixedly connected with a supporting cross plate, the top of the left supporting cross plate is fixedly connected to the U-shaped limit seat by two symmetrically distributed vertical connecting rods, and the top of the right supporting cross plate is fixedly connected to two symmetrically distributed fixed seats, a rotating block is rotatably arranged between the two fixed seats, a handle is fixedly connected to the outer side of the right end of the rotating block, the center of the front and rear end surfaces of the rotating block is fixedly connected to a rotating shaft, the rotating shaft is rotatably connected to the fixed seat, there are two limit blocks and are symmetrically arranged about the center of the rotating block, the limit blocks are fixedly sleeved on the outer side of the rotating shaft, the outer sides of the left ends of the two limit blocks are fixedly connected to the limiting plates, and the lower sides of the two limit plates are fixedly connected to anti-slip plates.

[0018] By rotating the handle, the rotating block can be driven to rotate, and at the same time, the limit blocks and limit plates on the front and rear sides can be driven to rotate. After the rubber and plastic are placed on the U-shaped workbench and clamped, the limit plate is rotated until the anti-slip plate is in close contact with the U-shaped limit seat, and the limit plate can limit the rubber and plastic from above.

[0019] Compared with the prior art, the beneficial effects of the utility model are: the uniform grinding device for rubber and plastic planing has the following advantages:

[0020] 1. Start the cylinder to push the connecting plate 1, drive it to move up and down, and drive the fixed connecting cross bar to move up and down. At the same time, due to the hinge of the hinged rod, the L-shaped sliding bar can be driven to slide horizontally in the sliding frame, so that automatic grinding can be achieved. The grinding is convenient and stable, and it can be ground according to rubber and plastic of different thicknesses and widths. The grinding efficiency is high and it is easy to grind evenly.

[0021] 2. By controlling the extension of the electric telescopic rod, the splint can clamp and fix the two ends of the rubber and plastic, which can ensure the stability of the rubber and plastic during the grinding process and prevent its movement from affecting the grinding process. The rubber pad can protect the rubber and plastic from being squeezed and damaged, thereby improving the utilization rate of the device.

[0022] 3. By turning the handle, the rotating block can be driven to rotate, and at the same time, the limit blocks and limit plates on the front and rear sides can be driven to rotate. After the rubber and plastic are placed on the U-shaped workbench and clamped, the limit plate is rotated until the anti-slip plate is in close contact with the U-shaped limit seat. The limit plate can limit the rubber and plastic from above. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of the utility model.

[0024] Figure 2 It is a front view schematic diagram of the structure of the utility model.

[0025] Figure 3 It is a schematic diagram of the structure of the utility model.

[0026] Figure 4 The utility model structure Figure 3 Enlarged schematic diagram at point A in the middle.

[0027] In the figure: 1 a stable bottom plate, 11 an L-shaped connecting frame, 12 a sliding frame, 13 a supporting seat, 14 an L-shaped sliding rod, 15 an articulated rod, 2 a lifting assembly, 21 a cylinder, 22 a connecting plate 1, 23 a connecting cross bar, 24 a sliding sleeve, 25 a connecting vertical rod, 26 a U-shaped workbench, 3 a guiding assembly, 31 a stable guide rod, 32 a top seat, 33 a U-shaped connecting frame, 4 a clamping assembly, 41 an electric telescopic rod, 42 a connecting plate 2, 43 a splint, 44 a rubber pad, 5 a grinding assembly, 51 a grinding roller, 52 a driving motor, 53 a motor seat, 6 a transmission assembly, 61 a pulley 1, 62 a pulley 2, 63 a belt, 7 a limiting assembly, 71 a supporting cross plate, 72 a U-shaped limiting seat, 73 a fixed seat, 74 a rotating block, 75 a handle, 76 a limiting block, and 77 a limiting plate. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] See also Figure 1-4 , This embodiment provides a technical solution: a uniform grinding device for rubber and plastic planing includes a stable bottom plate 1;

[0030] There are two stable bottom plates 1, and L-shaped connecting frames 11 are fixedly connected at two places on the upper side thereof. The two L-shaped connecting frames 11 on the upper side of the same stable bottom plate 1 correspond to each other. A sliding frame 12 is fixedly connected to the lower side of each L-shaped connecting frame 11. An L-shaped sliding rod 14 is slidably connected inside each sliding frame 12. A support seat 13 is fixedly connected between the two stable bottom plates 1. A lifting assembly 2 is provided on the upper side of the support seat 13. The L-shaped sliding rod 14 is connected to the lifting assembly 2 through a hinge rod 15. A guide assembly 3 is provided in the middle part of the upper side of the two stable bottom plates 1. A grinding assembly 5 is provided on the inner side of the two L-shaped sliding rods 14 on the same side, and a limit assembly 7 is provided on the outer side of the grinding assembly 5.

[0031] The lifting assembly 2 includes a cylinder 21, which is fixedly installed on the middle part of the upper side of the support seat 13, and the upper output end of the cylinder 21 is fixedly connected to the connecting plate 22. The left and right sides of the connecting plate 22 are respectively fixedly connected to the middle parts of two connecting cross bars 23, and a sliding sleeve 24 is fixedly connected to the middle part of the outer side of the connecting cross bar 23. The sliding sleeve 24 is connected to the guide assembly 3, and one end of the hinged rod 15 is hinged to the connecting cross bar 23, and the other end of the hinged rod 15 is hinged to the corner of the L-shaped sliding rod 14. Three evenly distributed connecting vertical rods 25 are fixedly connected to the upper side of the connecting plate 22, and a clamping assembly 4 is provided on the outer sides of the two outer connecting vertical rods 25. The tops of the three connecting vertical rods 25 are fixedly connected to the bottom of the U-shaped workbench 26.

[0032] Starting the cylinder 21 can push the connecting plate 22 to move up and down, and at the same time drive the fixedly connected connecting cross bar 23 to move up and down. At the same time, due to the hinged connection of the hinged rod 15, the L-shaped slide bar 14 can be driven to slide horizontally in the sliding frame 12, so that automatic grinding can be achieved. The grinding is convenient and stable, and rubber and plastic with different thicknesses and widths can be ground. The grinding efficiency is high and it is easy to grind evenly.

[0033] Among them, the guide assembly 3 includes a stabilizing guide rod 31, a top seat 32 and a U-shaped connecting frame 33. The middle parts of the two stabilizing base plates 1 are fixedly connected with the stabilizing guide rod 31, the top seat 32 is fixedly connected with the top of the stabilizing guide rod 31, the sliding sleeve 24 is slidably connected to the stabilizing guide rod 31, and the outer side of the top seat 32 is fixedly connected to the L-shaped connecting frame 11 through the U-shaped connecting frame 33.

[0034] The stabilizing guide rod 31 is used to provide guidance for the up and down movement of the connecting cross bar 23, so that the up and down movement of the connecting cross bar 23 is in the vertical direction. The arrangement of the top seat 32 and the U-shaped connecting frame 33 can improve the stability of the device and facilitate the grinding process.

[0035] The clamping assembly 4 includes an electric telescopic rod 41, a connecting plate 42, a clamping plate 43 and a rubber pad 44. The outer sides of the two outer connecting vertical rods 25 are fixedly connected to the electric telescopic rod 41, the output ends of the two electric telescopic rods 41 are fixedly connected to the connecting plate 42, the inner side of the connecting plate 42 is fixedly connected to the clamping plate 43, and the inner side of the clamping plate 43 is fixedly connected to the rubber pad 44.

[0036] By controlling the extension of the electric telescopic rod 41, the clamping plate 43 can clamp and fix the two ends of the rubber and plastic, which can ensure the stability of the rubber and plastic during the polishing process and prevent its movement from affecting the polishing process. The rubber pad 44 can protect the rubber and plastic from being squeezed and damaged, thereby improving the utilization rate of the device.

[0037] The grinding assembly 5 includes a grinding roller 51, a driving motor 52 and a motor seat 53. There are two grinding rollers 51 and the two grinding rollers 51 are connected through a transmission assembly 6. The front sides of the two grinding rollers 51 are connected to the transmission assembly 6, the rear side of the left grinding roller 51 is fixedly connected to the output shaft of the driving motor 52, and the rear connecting shaft of the right grinding roller 51 is rotatably connected to the L-shaped slide rod 14.

[0038] Starting the driving motor 52 can drive the left grinding roller 51 to rotate. The left grinding roller 51 rotates and drives the right grinding roller 51 to rotate through the transmission assembly 6, so that the rubber and plastic can be polished with high polishing efficiency and uniform polishing.

[0039] The transmission assembly 6 includes a pulley 1 61, a pulley 2 62 and a belt 63. The front side of the left grinding roller 51 is fixedly connected to the pulley 1 61 via a connecting shaft, and the front side of the right grinding roller 51 is fixedly connected to the pulley 2 62 via a connecting shaft. Both the pulley 1 61 and the pulley 2 62 are rotationally connected to the front L-shaped sliding rod 14, and the pulley 1 61 is connected to the pulley 2 62 via a belt 63.

[0040] The rotation of the grinding roller 51 on the left side can drive the pulley 1 61 to rotate, and the rotation of the pulley 1 61 can be transmitted to the pulley 2 62 through the belt 63, thereby driving the grinding roller 51 on the right side to rotate, so that both ends of the rubber and plastic can be evenly polished at the same time.

[0041] The limiting assembly 7 includes a supporting cross plate 71, a U-shaped limiting seat 72, a fixed seat 73, a rotating block 74, a handle 75, a limiting block 76 and a limiting plate 77. The two L-shaped slide bars 14 on the same side are fixedly connected with a supporting cross plate 71, the top of the supporting cross plate 71 on the left side is fixedly connected to the U-shaped limiting seat 72 by two symmetrically distributed vertical connecting rods, and the top of the supporting cross plate 71 on the right side is fixedly connected with two symmetrically distributed fixing seats 73, a rotating block 74 is rotatably provided between the two fixing seats 73, a handle 75 is fixedly connected to the outer side of the right end of the rotating block 74, a rotating shaft is fixedly connected to the center of the front and rear end faces of the rotating block 74, the rotating shaft is rotatably connected to the fixed seat 73, there are two limiting blocks 76 and they are symmetrically arranged about the center of the rotating block 74, the limiting blocks 76 are fixedly sleeved on the outer side of the rotating shaft, the outer sides of the left ends of the two limiting blocks 76 are fixedly connected to the limiting plates 77, and the lower sides of the two limiting plates 77 are fixedly connected with anti-slip plates.

[0042] By rotating the handle 75, the rotating block 74 can be driven to rotate, and at the same time, the limit blocks 76 and the limit plates 77 on the front and rear sides can be driven to rotate. After the rubber and plastic are placed on the U-shaped workbench 26 and clamped, the limit plates 77 are rotated until the anti-slip plate is in close contact with the U-shaped limit seat 72, and the limit plates 77 can limit the rubber and plastic from above.

[0043] The working principle of the uniform grinding device for rubber and plastic planing provided by the utility model is as follows: by rotating the handle 75, the rotating block 74 can be driven to rotate, and at the same time, the limit blocks 76 and the limit plates 77 on the front and rear sides can be driven to rotate. After the rubber and plastic are placed on the U-shaped workbench 26 and clamped, the limit plates 77 are rotated until the anti-slide plate is in close contact with the U-shaped limit seat 72. The limit plates 77 can limit the rubber and plastic from above. The stabilizing guide rod 31 is used to provide a guiding effect for the up and down movement of the connecting cross bar 23, so that the up and down movement of the connecting cross bar 23 is in the vertical direction. The arrangement of the top seat 32 and the U-shaped connecting frame 33 can improve the stability of the device and is beneficial to the grinding process. Starting the cylinder 21 can push the connecting plate 22 to drive it to move up and down, and at the same time drive the fixedly connected connecting cross bar 23 to move up and down. At the same time, due to the hinged connection of the hinged rod 15, the L-shaped sliding rod 14 can be driven to slide horizontally in the sliding frame 12. The automatic grinding process is realized, and the grinding is convenient and stable. Rubber and plastic with different thicknesses and widths can be ground, and the grinding efficiency is high, which is convenient for uniform grinding. By controlling the elongation of the electric telescopic rod 41, the clamping plate 43 can clamp and fix the two ends of the rubber and plastic, which can ensure the stability of the rubber and plastic during the grinding process and prevent its movement from affecting the grinding process. The rubber pad 44 can protect the rubber and plastic from being squeezed and damaged, thereby improving the utilization rate of the device. Starting the driving motor 52 can drive the grinding roller 51 on the left to rotate. The rotation of the grinding roller 51 on the left drives the grinding roller 51 on the right to rotate through the transmission component 6, so that the rubber and plastic can be ground. The grinding efficiency is high and the grinding is uniform. The rotation of the grinding roller 51 on the left can drive the pulley 1 61 to rotate. The rotation of the pulley 1 61 can be transmitted to the pulley 2 62 through the belt 63, thereby driving the grinding roller 51 on the right to rotate, and it can be realized that both ends of the rubber and plastic can be uniformly ground at the same time.

[0044] The above are only embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. Uniform grinding device for rubber and plastic planing, characterized by: It includes a stabilizing base plate (1); The stable bottom plate (1) has two L-shaped connecting frames (11) fixedly connected at two places on the upper side thereof, the two L-shaped connecting frames (11) on the upper side of the same stable bottom plate (1) correspond to each other, the lower side of each L-shaped connecting frame (11) is fixedly connected to a sliding frame (12), the interior of each sliding frame (12) is slidably connected to an L-shaped sliding rod (14), a support seat (13) is fixedly connected between the two stable bottom plates (1), a lifting assembly (2) is provided on the upper side of the support seat (13), the L-shaped sliding rod (14) is connected to the lifting assembly (2) through a hinge rod (15), a guide assembly (3) is provided in the middle part of the upper side of the two stable bottom plates (1), a grinding assembly (5) is provided on the inner side of the two L-shaped sliding rods (14) on the same side, and a limit assembly (7) is provided on the outer side of the grinding assembly (5); The lifting assembly (2) comprises a cylinder (21), the cylinder (21) is fixedly installed in the middle of the upper side of the support seat (13), the upper output end of the cylinder (21) is fixedly connected to the connecting plate 1 (22), the left and right sides of the connecting plate 1 (22) are respectively fixedly connected to the middle of two connecting cross bars (23), the middle of the outer side of the connecting cross bar (23) is fixedly connected with a sliding sleeve (24), the sliding sleeve (24) is connected to the guide assembly (3), one end of the hinge rod (15) is hinged to the connecting cross bar (23), and the other end of the hinge rod (15) is hinged to the corner of the L-shaped sliding rod (14), three evenly distributed connecting vertical rods (25) are fixedly connected to the upper side of the connecting plate 1 (22), and the outer sides of the two outer connecting vertical rods (25) are provided with a clamping assembly (4), and the tops of the three connecting vertical rods (25) are fixedly connected to the bottom of the U-shaped workbench (26).

2. The uniform grinding device for rubber and plastic slicing according to claim 1, characterized in that: The guide assembly (3) comprises a stabilizing guide rod (31), a top seat (32) and a U-shaped connecting frame (33); the middle parts of the two stabilizing base plates (1) are fixedly connected to the stabilizing guide rod (31); the top of the stabilizing guide rod (31) is fixedly connected to the top seat (32); the sliding sleeve (24) is slidably connected to the stabilizing guide rod (31); and the outer side of the top seat (32) is fixedly connected to the L-shaped connecting frame (11) via the U-shaped connecting frame (33).

3. The uniform grinding device for rubber and plastic slicing according to claim 1 is characterized in that: The clamping assembly (4) comprises an electric telescopic rod (41), a second connecting plate (42), a clamping plate (43) and a rubber pad (44); the outer sides of the two outer connecting vertical rods (25) are fixedly connected to the electric telescopic rod (41); the output ends of the two electric telescopic rods (41) are fixedly connected to the second connecting plate (42); the inner side of the second connecting plate (42) is fixedly connected to the clamping plate (43); and the inner side of the clamping plate (43) is fixedly connected to the rubber pad (44).

4. The uniform grinding device for rubber and plastic slicing according to claim 1, characterized in that: The grinding assembly (5) comprises a grinding roller (51), a driving motor (52) and a motor seat (53); there are two grinding rollers (51) and the two grinding rollers (51) are connected via a transmission assembly (6); the front sides of the two grinding rollers (51) are connected to the transmission assembly (6); the rear side of the left grinding roller (51) is fixedly connected to the output shaft of the driving motor (52); and the rear connecting shaft of the right grinding roller (51) is rotationally connected to the L-shaped slide bar (14).

5. The uniform grinding device for rubber and plastic slicing according to claim 4, characterized in that: The transmission assembly (6) comprises a pulley 1 (61), a pulley 2 (62) and a belt (63). The front side of the grinding roller (51) on the left side is fixedly connected to the pulley 1 (61) via a connecting shaft, and the front side of the grinding roller (51) on the right side is fixedly connected to the pulley 2 (62) via a connecting shaft. The pulley 1 (61) and the pulley 2 (62) are both rotationally connected to the L-shaped sliding rod (14) on the front side. The pulley 1 (61) is connected to the pulley 2 (62) via a belt (63).

6. The uniform grinding device for rubber and plastic planing according to claim 1, characterized in that: The limiting assembly (7) comprises a supporting transverse plate (71), a U-shaped limiting seat (72), a fixed seat (73), a rotating block (74), a handle (75), a limiting block (76) and a limiting plate (77). The two L-shaped sliding bars (14) on the same side are fixedly connected with the supporting transverse plate (71). The top of the supporting transverse plate (71) on the left side is fixedly connected to the U-shaped limiting seat (72) through two symmetrically distributed vertical connecting rods. The top of the supporting transverse plate (71) on the right side is fixedly connected with two symmetrically distributed fixed seats (73). The two fixed seats (7 3) is provided with a rotating block (74) for rotation between the two ends, a handle (75) is fixedly connected to the outer side of the right end of the rotating block (74), a rotating shaft is fixedly connected to the center of the front and rear end surfaces of the rotating block (74), and the rotating shaft is rotatably connected to the fixed seat (73), there are two limit blocks (76) and they are symmetrically arranged about the center of the rotating block (74), the limit blocks (76) are fixedly sleeved on the outer side of the rotating shaft, the outer sides of the left ends of the two limit blocks (76) are fixedly connected to the limit plates (77), and the lower sides of the two limit plates (77) are fixedly connected to the anti-slip plate.

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