A leather grinding machine for leather processing

Abstract

The utility model belongs to leather grinding machine technical field, especially a kind of leather grinding machine for leather processing, in existing technology, it cannot be adjusted according to leather thickness, it is prone to cause leather to be polished excessively or polish insufficiently, and the surface of leather cannot be cleaned, and it is prone to cause the accumulation of leather surface residual grinding dust, not only precision of subsequent polishing process will be affected, thereby affect the problem of use effect, present and propose following scheme, it includes support frame, the bottom fixed mounting of support frame has two support legs, and the top fixed mounting of support frame has mounting frame one and mounting frame two;It also includes: transport mechanism, setting in support frame top, for transporting leather;Polishing adjusting mechanism, the utility model can be adjusted according to leather thickness, avoid leather to be polished excessively or polish insufficiently, and the surface of leather can be cleaned, prevent leather surface residual grinding dust accumulation, improve use effect.

Description

Technical Field

[0001] This application relates to the field of leather sanding machine technology, and in particular to a leather sanding machine for leather processing. Background Technology

[0002] In the leather processing process, in order to make the leather surface smooth, it is usually necessary to polish the leather surface, and a special leather polishing machine is generally used to polish the leather surface.

[0003] CN214694245U discloses a leather polishing machine for leather processing, relating to the field of leather polishing machines. It includes a base with a support at its bottom and a processing box at its top. A water tank is installed at the bottom of the inner wall of the processing box, and filter plates are connected to both ends of the inner wall of the water tank. An electric push rod is installed at one end of the inner wall of the processing box, and a placement plate is provided at the extended end of the electric push rod. This invention, by setting up an electric push rod, a placement plate, a primary motor, and a polishing disc, places the leather to be polished on the placement plate. The electric push rod pushes the placement plate below the polishing disc. Rotating a rocker arm causes one disc to rotate, which in turn drives the other discs via a belt. The discs drive a screw to rotate, causing the polishing disc to move downwards along the screw until it is in contact with the leather. At this point, the primary motor is activated, causing the rotating rod to drive the rotating box and the polishing disc to rotate, thus polishing the leather.

[0004] In existing technologies, it is impossible to adjust the polishing according to the thickness of the leather, which can easily lead to over-polishing or under-polishing of the leather. Furthermore, it is impossible to clean the surface of the leather, which can easily lead to the accumulation of residual abrasive particles on the surface of the leather. This not only affects the precision of subsequent polishing processes, but also affects the performance of the product. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies, such as the inability to adjust the polishing according to the thickness of the leather, which easily leads to over-polishing or under-polishing of the leather, and the inability to clean the surface of the leather, which easily leads to the accumulation of residual abrasive particles on the surface of the leather, thus affecting the accuracy of subsequent polishing processes and the overall performance. Therefore, this invention proposes a leather polishing machine for leather processing.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A leather grinding machine for leather processing includes:

[0008] The support frame includes two support legs fixedly installed at its bottom and mounting bracket one and mounting bracket two fixedly installed at its top; it also includes:

[0009] The transport mechanism, located on top of the support frame, is used for transporting leather;

[0010] A polishing adjustment mechanism, located at the bottom of the mounting bracket, is used to polish the surface of the leather.

[0011] The spraying mechanism is located at the bottom of the mounting bracket.

[0012] The cleaning mechanism, located at the bottom of mounting bracket two, is used to clean the surface of the leather.

[0013] Preferably, the transport mechanism includes two transmission wheels rotatably mounted inside the support frame, and the two transmission wheels are connected by the same filter conveyor belt.

[0014] Preferably, the spraying mechanism includes a pipe fixedly installed at the bottom of the mounting frame, and a storage box is fixedly installed at the rear end of the support frame, with a water pump installed inside the storage box.

[0015] Preferably, the output end of the water pump is fixedly connected to the pipeline, a nozzle is fixedly installed at the bottom end of the pipeline, and a collection box is fixedly installed at the bottom of the support frame.

[0016] Preferably, the grinding adjustment mechanism includes a drive motor located inside the rear side of the mounting frame. The output shaft of the drive motor is fixedly mounted with a screw. The outside of the screw is rotatably connected to the inside of the mounting frame. An L-block is threadedly connected to the outside of the screw, and the outside of the L-block is slidably connected to the mounting frame.

[0017] Preferably, a grinding frame is fixedly installed at the bottom of the L block, a rotating shaft is rotatably installed inside the grinding frame, a second drive motor is provided at the front end of the grinding frame, the output shaft of the second drive motor is fixedly connected to the rotating shaft, and a grinding roller is fixedly installed on the outer surface of the rotating shaft.

[0018] Preferably, the cleaning mechanism includes a cleaning box fixedly installed on the top of the mounting frame two. A drive motor three is installed inside the cleaning box. A connecting pipe is fixedly installed at the bottom of the cleaning box, and a nozzle two is fixedly installed at the bottom of the connecting pipe. A rotating rod is fixedly installed on the output shaft of the drive motor three. A fan blade is fixedly installed on the outside of the rotating rod. A first bevel gear is fixedly installed on the outer surface of the rotating rod. The first bevel gear meshes with a second bevel gear. A rotating rod one is fixedly installed on the front side of the second bevel gear. The outside of the rotating rod one is rotatably connected to the inside of the mounting frame two. A hydraulic cylinder one is installed on the rear side of the inside of the mounting frame two. A hydraulic cylinder two is fixedly installed on the output shaft of the hydraulic cylinder one, and a cleaning brush is fixedly installed on the output shaft of the hydraulic cylinder two.

[0019] Preferably, a third bevel gear is fixedly mounted on the outside of the rotating rod one, and the third bevel gear meshes with a fourth bevel gear. A rotating rod two is fixedly mounted on the bottom of the fourth bevel gear. The outside of the rotating rod two is rotatably connected to the inside of the mounting frame two and the support frame. A fifth bevel gear is fixedly mounted on the outer surface of the rotating rod two, and the fifth bevel gear meshes with a sixth bevel gear. A rotating shaft is fixedly mounted on the sixth bevel gear, and the outside of the rotating shaft is rotatably connected to the inside of the support frame. A seventh bevel gear is fixedly mounted on the outside of the rotating shaft, and the seventh bevel gear meshes with an eighth bevel gear. The eighth bevel gear is fixedly connected to one of the transmission wheels.

[0020] The beneficial effects of the leather grinding machine for leather processing described in this utility model are as follows:

[0021] Because of the transportation mechanism, the filter conveyor belt drives another transmission wheel to rotate. The operator places the leather to be processed on the conveyor belt, and the filter conveyor belt transports the leather to the spraying station, the polishing station and the cleaning station in sequence, so as to realize the continuous transportation of the leather.

[0022] Because of the setting of the polishing adjustment mechanism, by starting the drive motor, its output shaft drives the screw to rotate. During the rotation of the screw, the L block moves downward, and the L block moves the polishing frame downward, thereby adjusting the height of the polishing frame and the polishing roller to accurately adapt to leathers of different thicknesses. When the leather passes under the polishing roller, the rotating polishing roller polishes the surface of the leather, which can achieve processing needs such as removing defects, uniform thickness, and creating a velvet surface.

[0023] The spraying mechanism, activated by a water pump in the storage tank, delivers water or leather abrasion aid through pipes to nozzle one, serving to cool, reduce dust, and assist in the abrasion process. Waste liquid is collected in a collection tank after use to prevent workshop contamination.

[0024] Because of the cleaning mechanism, the rotating rod drives the fan blades to generate airflow, which initially blows away the abrasion debris on the leather surface. At the same time, hydraulic cylinder one is activated, and its output shaft drives hydraulic cylinder two to move forward. Hydraulic cylinder two then drives the cleaning brush forward, making it closely fit the leather surface, which can clean the leather surface and further remove residual debris and stains, completing the final cleaning.

[0025] This invention can adjust the polishing according to the thickness of the leather, avoiding over-polishing or under-polishing, and can clean the surface of the leather to prevent the accumulation of residual abrasions, thus improving the performance. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of a leather grinding machine for leather processing proposed in this utility model;

[0027] Figure 2 This is a top view structural diagram of a leather grinding machine for leather processing proposed in this utility model;

[0028] Figure 3 This is a schematic diagram of the grinding adjustment mechanism of a leather grinding machine for leather processing proposed in this utility model;

[0029] Figure 4 This utility model proposes a leather grinding machine for leather processing. Figure 2 Enlarged structural diagram of section A;

[0030] Figure 5 This utility model proposes a leather grinding machine for leather processing. Figure 1 Enlarged structural diagram of section B;

[0031] Figure 6 This utility model proposes a leather grinding machine for leather processing. Figure 2 Enlarged structural diagram of section C;

[0032] Figure 7 This is a three-dimensional structural diagram of a leather grinding machine for leather processing proposed in this utility model.

[0033] Reference numerals: 1. Support frame; 2. Support leg; 3. Transmission wheel; 4. Filter conveyor belt; 5. Mounting frame one; 6. Mounting frame two; 7. Cleaning box; 8. Drive motor one; 9. Screw; 10. L-block; 11. Grinding frame; 12. Grinding roller; 13. Drive motor two; 14. Storage box; 15. Pipe; 16. Nozzle one; 17. Collection box; 18. Connecting pipe; 19. Drive motor three; 20. Rotating rod; 21. Fan blade; 22. First bevel gear; 23. Second bevel gear; 24. Rotating rod one; 25. Third bevel gear; 26. Fourth bevel gear; 27. Rotating rod two; 28. Fifth bevel gear; 29. ​​Sixth bevel gear; 30. Rotating shaft; 31. Seventh bevel gear; 32. Eighth bevel gear; 33. Hydraulic cylinder two; 34. Cleaning brush. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0035] Example 1

[0036] Reference Figures 1-7 A leather grinding machine for leather processing, comprising:

[0037] Support frame 1, with two support legs 2 fixedly installed at its bottom, and mounting bracket 5 and mounting bracket 6 fixedly installed at its top. Support frame 1, support legs 2, mounting bracket 5, and mounting bracket 6 are made of Q235 carbon structural steel or angle steel welded together. These components form the "skeleton" of the entire machine, needing to bear the weight of the transport and grinding mechanisms (approximately 500-800 kg) while ensuring no significant shaking during processing. Q235 steel is high in strength, with a tensile strength of 375-500 MPa, moderately priced, and has good weldability, enabling the formation of a stable frame that meets load-bearing and rigidity requirements. It also includes:

[0038] A transport mechanism, located on top of support frame 1, is used for transporting leather;

[0039] A polishing adjustment mechanism, located at the bottom of mounting bracket 5, is used to polish the surface of the leather;

[0040] The spraying mechanism is located at the bottom of mounting bracket 5;

[0041] The cleaning mechanism, located at the bottom of mounting bracket 26, is used to clean the surface of the leather.

[0042] In this embodiment, the transport mechanism includes two transmission wheels 3 rotatably mounted inside the support frame 1. The transmission wheels 3 are made of high-strength gray cast iron HT250 or nylon 66. The transmission wheels 3 need to drive the filter conveyor belt 4 to rotate. They are subjected to friction and torque for a long time. Gray cast iron is wear-resistant, has good compressive strength, and a hardness of 170-240HB, making it suitable for contact with the conveyor belt. Nylon 66, after being reinforced with glass fiber, has a strength close to that of metal and is lighter in weight, 40% lighter than cast iron, and can reduce wear on the filter conveyor belt 4, making it suitable for small to medium load scenarios. The two transmission wheels 3 are connected by the same filter conveyor belt 4. The filter conveyor belt 4 is made of polyurethane (PU) mesh belt with uniform mesh holes on the surface, with a hole diameter of 3-5mm. ① When conveying leather, the surface is non-slip, and the PU friction... ① Coefficient of 0.6-0.8 to prevent leather from slipping; ② Wear-resistant, PU wear resistance is 3-5 times that of rubber, and service life can reach 800-1000 hours; ③ Water and air permeability, the mesh design facilitates the passage of waste liquid from the spraying mechanism into the collection box 17 below, preventing liquid accumulation and soaking of the leather; The surface of the filter conveyor belt 4 is evenly distributed with several small filter holes, which can promptly let down the sanding debris and dust generated during leather transportation, preventing them from accumulating on the conveyor belt and affecting the smooth transport of the leather. The support frame 1 is fixedly installed with a debris collection box below the filter conveyor belt 4. The collection box is slidably connected to the support frame 1 through a slide rail, which makes it convenient for operators to regularly remove and clean the accumulated debris inside, keeping the working environment of the equipment clean.

[0043] In this embodiment, the spraying mechanism includes a pipe 15 fixedly installed at the bottom of the mounting frame 5, and a storage tank 14 fixedly installed at the rear end of the support frame 1. The storage tank 14 is equipped with a water pump. The water pump is made of cast iron, and the impeller is made of engineering plastic PP or ABS. The cast iron pump body has good pressure resistance and can adapt to working pressure of 0.2-0.5MPa. The plastic impeller is lightweight and corrosion resistant, avoiding wear of the impeller by tiny impurities in the liquid.

[0044] In this embodiment, the output end of the water pump is fixedly connected to the pipe 15, and a nozzle 16 is fixedly installed at the bottom end of the pipe 15. The pipe 15 and the nozzle 16 are made of UPVC rigid polyvinyl chloride. They are in long-term contact with water and leather abrasion auxiliaries and may contain weak acid components. They need to be resistant to chemical corrosion. UPVC has low cost, only 1 / 3 of stainless steel, and is lightweight, making it suitable for conveying room temperature liquids. A collection box 17 is fixedly installed at the bottom of the support frame 1.

[0045] In this embodiment, the grinding adjustment mechanism includes a drive motor 8 disposed inside the rear side of the mounting bracket 5. The output shaft of the drive motor 8 is fixedly mounted with a screw 9. The outside of the screw 9 is rotatably connected to the inside of the mounting bracket 5. An L-block 10 is threadedly connected to the outside of the screw 9. The outside of the L-block 10 is slidably connected to the mounting bracket 5.

[0046] In this embodiment, a grinding frame 11 is fixedly installed at the bottom of block L 10. A rotating shaft is rotatably installed inside the grinding frame 11. The screw 9 and the rotating shaft are made of 45# steel, heat-treated to a hardness of 220-250HB. The screw 9 needs to rotate to move block L 10 up and down, requiring high precision and wear resistance. The rotating shaft needs to drive the grinding roller 12 to rotate at a high speed of 1000-1500 r / min, bearing radial force. The 45# steel, after heat treatment, has a balanced strength and toughness, and grinding ensures thread accuracy while meeting long-term wear resistance requirements. The grinding frame 11... The front end of component 1 is equipped with a drive motor 2 13. The output shaft of drive motor 2 13 is fixedly connected to the rotating shaft. A grinding roller 12 is fixedly installed on the outer surface of the rotating shaft. The grinding roller 12 is made of aluminum alloy 6061-T6, with sandpaper, alumina or silicon carbide abrasives pasted on the surface. The aluminum alloy substrate is 60% lighter than steel, which can reduce the load on the rotating shaft. 6061-T6 has high hardness and is not easily deformed, ensuring the flatness during grinding. Abrasive selection: alumina is suitable for ordinary leather, with good toughness and not easy to break; silicon carbide is suitable for hard leather, such as microfiber leather, with high hardness and high grinding efficiency.

[0047] In this embodiment, the cleaning mechanism includes a cleaning box 7 fixedly installed on the top of the mounting bracket 2 6. The cleaning box 7 is made of cold-rolled steel plate to protect the internal motor and gears. The cold-rolled steel plate has a high strength of 300MPa and a powder coating thickness of 60-80μm, which can prevent dust and slight liquid corrosion and extend service life. A filter screen is fixedly installed inside the cleaning box 7. A drive motor 3 19 is installed inside the cleaning box 7. A connecting pipe 18 is fixedly installed at the bottom of the cleaning box 7. A nozzle 2 is fixedly installed at the bottom of the connecting pipe 18. A rotating rod 20 is fixedly installed on the output shaft of the drive motor 3 19. A fan blade 21 is fixedly installed on the outside of the rotating rod 20. The fan blade 21 is made of BS engineering plastic with glass fiber reinforcement. It needs to rotate at high speed to generate airflow. The ABS with glass fiber reinforcement has high strength and an impact resistance of 20kJ / m². Lightweight, reducing motor load and less susceptible to wear from tiny debris in the airflow. A first bevel gear 22 is fixedly mounted on the outer surface of the rotating rod 20, meshing with a second bevel gear 23. A rotating rod 24 is fixedly mounted on the front side of the second bevel gear 23. The exterior of the rotating rod 24 is rotatably connected to the interior of the mounting bracket 6. A hydraulic cylinder is located on the rear side of the interior of the mounting bracket 6. A second hydraulic cylinder 33 is fixedly mounted on the output shaft of the first hydraulic cylinder. A cleaning brush 34 is fixedly mounted on the output shaft of the second hydraulic cylinder 33. The bristles of the cleaning brush 34 are made of nylon 610 with a diameter of 0.1-0.3mm. The brush holder is made of PP plastic. Nylon 610 bristles have good toughness, an elongation at break of 300%, are wear-resistant and soft, and avoid scratching the leather surface. The PP brush holder is corrosion-resistant and its position can be flexibly adjusted by the hydraulic cylinder.

[0048] In this embodiment, a third bevel gear 25 is fixedly mounted on the outside of the rotating rod 24. The third bevel gear 25 meshes with a fourth bevel gear 26. A rotating rod 27 is fixedly mounted on the bottom of the fourth bevel gear 26. The outside of the rotating rod 27 is rotatably connected to the inside of the mounting frame 2 6 and the support frame 1. A fifth bevel gear 28 is fixedly mounted on the outer surface of the rotating rod 27. The fifth bevel gear 28 meshes with a sixth bevel gear 29. A rotating shaft 30 is fixedly mounted on the sixth bevel gear 29. The outside of the rotating shaft 30 is rotatably connected to the inside of the support frame 1. A seventh bevel gear 31 is fixedly mounted on the outside of the rotating shaft 30. The seventh bevel gear 31 meshes with an eighth bevel gear 32. The eighth bevel gear 32 is fixedly connected to one of the transmission wheels 3.

[0049] In this utility model, when leather needs to be transported, the drive motor 19 is started, and its output shaft drives the rotating rod 20 to rotate. The rotating rod 20 drives the first bevel gear 22 to rotate, the first bevel gear 22 drives the second bevel gear 23 to rotate, the second bevel gear 23 drives the rotating rod 24 to rotate, the rotating rod 24 drives the third bevel gear 25 to rotate, the third bevel gear 25 drives the fourth bevel gear 26 to rotate, the fourth bevel gear 26 drives the rotating rod 27 to rotate, the rotating rod 27 drives the fifth bevel gear 28 to rotate, the fifth bevel gear 28 drives the sixth bevel gear 29 to rotate, and the sixth bevel gear... Wheel 29 drives rotating shaft 30 to rotate, rotating shaft 30 drives seventh bevel gear 31 to rotate, seventh bevel gear 31 drives eighth bevel gear 32 to rotate, and eighth bevel gear 32 drives one of the transmission wheels 3 to rotate, ensuring the power synchronization of the transport mechanism. The filter conveyor belt 4 drives another transmission wheel 3 to rotate. The operator places the leather to be processed on the conveyor belt, and the filter conveyor belt 4 sequentially transports the leather to the spraying station, polishing station, and cleaning station, achieving continuous transport of the leather. When wet polishing of the leather surface is required, the water pump in storage tank 14 is activated to deliver water or leather polishing agent. The liquid is transported through pipe 15 to nozzle 16, serving to cool, reduce dust, and assist in grinding. Waste liquid is collected in collection box 17 to prevent workshop contamination. When adjustments are needed based on leather thickness, drive motor 8 is activated, its output shaft driving screw 9 to rotate. During screw 9 rotation, L-block 10 moves downwards, simultaneously moving grinding frame 11 downwards, thus adjusting the height of grinding frame 11 and grinding roller 12 to precisely fit different leather thicknesses. Once adjusted to the appropriate position, drive motor 13 is activated, its output shaft driving grinding roller 12 to rotate at high speed. As the leather passes under the polishing roller 12, the rotating polishing roller 12 polishes the surface of the leather, achieving processing requirements such as removing blemishes, uniform thickness, and creating a velvety surface. When the leather needs to be cleaned, the rotating rod 20 drives the fan blade 21 to generate airflow, initially blowing away the polishing debris on the surface of the leather. At the same time, hydraulic cylinder one is activated, and its output shaft drives hydraulic cylinder two 33 to move forward. Hydraulic cylinder two 33 is activated, and hydraulic cylinder two 33 drives the cleaning brush 34 to move forward, so that it fits closely to the surface of the leather, which can clean the surface of the leather and further remove residual debris and stains on the surface of the leather, completing the final cleaning.

[0050] Example 2

[0051] The difference between this embodiment and Embodiment 1 is that a push rod motor is installed on the top of the cleaning box 7. A brush is fixedly installed on the output shaft of the push rod motor, which can clean the surface of the filter screen. When the push rod motor is started, its output shaft drives the brush to move downward, so that the brush contacts the surface of the filter screen. As the push rod motor continues to run, the brush reciprocates on the surface of the filter screen, sweeping away the debris and impurities accumulated on the filter screen, avoiding debris clogging the filter screen and affecting the airflow circulation in the cleaning box 7, and ensuring that the cleaning effect of the cleaning box 7 on the leather surface is continuous and stable.

[0052] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A leather grinding machine for leather processing, comprising: A support frame (1), wherein two support legs (2) are fixedly installed at the bottom of the support frame (1), and mounting bracket one (5) and mounting bracket two (6) are fixedly installed at the top of the support frame (1); characterized in that it further includes: The transport mechanism, located on top of the support frame (1), is used for transporting leather; A polishing adjustment mechanism is located at the bottom of mounting bracket 1 (5) and is used to polish the surface of the leather; The spraying mechanism is located at the bottom of the mounting bracket (5); The cleaning mechanism, located at the bottom of mounting bracket two (6), is used to clean the surface of the leather.

2. The leather grinding machine for leather processing according to claim 1, characterized in that: The transport mechanism includes two transmission wheels (3) rotatably mounted inside the support frame (1), and the two transmission wheels (3) are connected by the same filter conveyor belt (4).

3. A leather grinding machine for leather processing according to claim 1, characterized in that: The spraying mechanism includes a pipe (15) fixedly installed at the bottom of the mounting frame (5), and a storage box (14) is fixedly installed at the rear end of the support frame (1), and a water pump is installed inside the storage box (14).

4. A leather grinding machine for leather processing according to claim 3, characterized in that: The output end of the water pump is fixedly connected to the pipe (15), and a nozzle (16) is fixedly installed at the bottom end of the pipe (15). A collection box (17) is fixedly installed at the bottom of the support frame (1).

5. A leather grinding machine for leather processing according to claim 1, characterized in that: The grinding adjustment mechanism includes a drive motor (8) located inside the rear side of the mounting bracket (5). The output shaft of the drive motor (8) is fixedly mounted with a screw (9). The outside of the screw (9) is rotatably connected to the inside of the mounting bracket (5). The outside of the screw (9) is threadedly connected to an L-block (10). The outside of the L-block (10) is slidably connected to the mounting bracket (5).

6. A leather grinding machine for leather processing according to claim 5, characterized in that: A grinding frame (11) is fixedly installed at the bottom of the L block (10). A rotating shaft is rotatably installed inside the grinding frame (11). A second drive motor (13) is provided at the front end of the grinding frame (11). The output shaft of the second drive motor (13) is fixedly connected to the rotating shaft. A grinding roller (12) is fixedly installed on the outer surface of the rotating shaft.

7. A leather grinding machine for leather processing according to claim 1, characterized in that: The cleaning mechanism includes a cleaning box (7) fixedly installed on the top of the mounting frame 2 (6). The cleaning box (7) is equipped with a drive motor 3 (19). A connecting pipe (18) is fixedly installed at the bottom of the cleaning box (7). A nozzle 2 is fixedly installed at the bottom of the connecting pipe (18). A rotating rod (20) is fixedly installed on the output shaft of the drive motor 3 (19). A fan blade (21) is fixedly installed on the outside of the rotating rod (20). A first bevel gear (22) is fixedly installed on the outer surface of the rotating rod (20). A second bevel gear (23) meshes with the first bevel gear (22). A rotating rod 1 (24) is fixedly installed on the front side of the second bevel gear (23). The outside of the rotating rod 1 (24) is rotatably connected to the inside of the mounting frame 2 (6). A hydraulic cylinder 1 is provided on the rear side of the inside of the mounting frame 2 (6). A hydraulic cylinder 2 (33) is fixedly installed on the output shaft of the hydraulic cylinder 1. A cleaning brush (34) is fixedly installed on the output shaft of the hydraulic cylinder 2 (33).

8. A leather grinding machine for leather processing according to claim 7, characterized in that: A third bevel gear (25) is fixedly installed on the outside of the first rotating rod (24). The third bevel gear (25) meshes with a fourth bevel gear (26). A second rotating rod (27) is fixedly installed at the bottom of the fourth bevel gear (26). The outside of the second rotating rod (27) is rotatably connected to the inside of the second mounting frame (6) and the inside of the support frame (1). A fifth bevel gear (28) is fixedly installed on the outer surface of the second rotating rod (27). The fifth bevel gear (28) meshes with a sixth bevel gear (29). A rotating shaft (30) is fixedly installed on the sixth bevel gear (29). The outside of the rotating shaft (30) is rotatably connected to the inside of the support frame (1). A seventh bevel gear (31) is fixedly installed on the outside of the rotating shaft (30). The seventh bevel gear (31) meshes with an eighth bevel gear (32). The eighth bevel gear (32) is fixedly connected to one of the transmission wheels (3).

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