A surface polishing device for leather processing

Abstract

The present invention belongs to the technical field of polishing equipment, and specifically relates to a surface polishing equipment for leather processing. The surface polishing equipment for leather processing comprises a mounting base plate, the top outer wall of the mounting base plate is fixedly connected to a frame, the outer walls on both sides of the frame are fixedly connected to supporting blocks, the top outer walls of the supporting blocks are fixedly connected to spring connecting rods, the top outer walls of the two spring connecting rods are fixedly connected to the same working platform, the top outer wall of the mounting base plate is fixedly connected to an elevated frame, the top outer wall of the elevated frame is fixedly connected to a vertical motor, the axis of the vertical motor is fixedly connected to a telescopic rod, the outer wall of one end of the telescopic rod away from the vertical motor is fixedly connected to a polishing device, and the polishing and grinding work of the running motor synchronously drives the connected fan blades to rotate, so that air is sucked into the mounting sleeve from the ventilation hole to generate flow wind force, and the flow wind force blows from the circulation channel to the outer surface of the leather to sweep the polished part of the leather.

Description

Technical Field

[0001] The present invention belongs to the technical field of polishing equipment, and particularly relates to a surface polishing equipment for leather processing. Background Art

[0002] The surface polishing equipment for leather processing mainly refers to a leather polishing machine, which is a device that uses a rotating grinding disc for grinding and polishing. Its basic principle is to utilize the high-speed rotation of the grinding disc, place leather products on the grinding disc, and remove pores, defects, and stains on the surface through frictional action, so as to make the leather surface smoother, brighter, and the texture softer.

[0003] For example, a polishing device for a new type of leather disclosed in the national patent publication number CN214361459U includes a conveying operation table, and a polishing box body is fixedly connected to the top of the conveying operation table. Feeding and discharging ports are opened at the bottoms of both side surfaces of the polishing box body, and a slide rail is fixedly connected to the top of the inner cavity of the conveying operation table. Through the mutual cooperation of structures such as the designed polishing box body, feeding and discharging ports, slide rail, stepping motor, electric telescopic rod, polishing motor, motor output shaft, and polishing tool, the leather with reinforcement can be sent to the surface of the conveying operation table, and then rapid and effective polishing operation can be carried out on the leather, improving the working efficiency of the equipment for leather polishing, increasing the use effect and practical performance of the equipment, and effectively solving the problem that when the existing equipment works, operators need to manually transport the leather into the polishing equipment, reducing the working efficiency of the equipment.

[0004] However, the traditional device still has the following problems when in use:

[0005] When the leather is subjected to surface polishing, part of the cutin and dust will be ground out on the outer surface due to high-speed friction, and due to the high-speed friction, the leather will generate some heat, and this heat is likely to make the cutin adhere to the leather surface, usually requiring the staff to perform blowing treatment alone, which affects the working efficiency. Summary of the Invention

[0006] Aiming at the deficiencies of the existing technology, the purpose of the present invention is to provide a surface polishing equipment for leather processing, which has the advantage of synchronously processing leather waste cutin so as to improve the working efficiency.

[0007] To achieve the above object, the present invention provides the following technical solution: A surface polishing device for leather processing, including a mounting base plate, the top outer wall of the mounting base plate is fixedly connected with a frame, the outer walls on both sides of the frame are fixedly connected with supporting blocks, the top outer wall of the supporting blocks is fixedly connected with spring connecting rods, the top outer walls of the two spring connecting rods are fixedly connected with the same working platform, the top outer wall of the mounting base plate is fixedly connected with a heightening frame, the top outer wall of the heightening frame is fixedly connected with a vertical motor, the axis of the vertical motor is fixedly connected with a telescopic rod, and the outer wall of the telescopic rod far from the vertical motor is fixedly connected with a polishing device. The polishing device is located directly above the working platform, and a supporting platform is fixedly connected to the outer wall on one side of the vertical motor.

[0008] Preferably, the polishing device includes a mounting sleeve, a top plate, a flange connecting plate, a running motor, a driving shaft rod, a fixing plate and a polishing disc. The outer wall on one side of the mounting sleeve is fixedly connected with the outer wall of the telescopic rod far from the vertical motor. The outer walls around the top plate are fixedly connected with the inner wall at the top of the mounting sleeve. The outer walls around the flange connecting plate are fixedly connected with the inner wall in the middle of the mounting sleeve. The outer wall at one end of the running motor is fixedly connected with the top outer wall of the flange connecting plate. The top outer wall of the driving shaft rod passes through the flange connecting plate and is fixedly connected with the axis of the running motor.

[0009] Preferably, the bottom outer wall of the driving shaft rod is fixedly connected with the top outer wall of the fixing plate. The outer walls around the fixing plate are rotatably connected with the inner wall at the bottom of the mounting sleeve. The top outer wall of the polishing disc is fixedly connected with the bottom outer wall of the fixing plate. The bottom outer wall of the polishing disc is movably connected with the top outer wall of the working platform.

[0010] Preferably, ventilation holes communicating with the inner wall are provided on the outer wall of the mounting sleeve. A connecting fan blade is fixedly connected to the outer wall of the driving shaft rod. A plurality of exhaust grooves communicating with the inner wall are provided on the outer wall of the mounting sleeve. A plurality of limiting support frames are provided on the outer wall of the mounting sleeve. The limiting support frames are inclined. A through-flow channel with both ends communicating is provided in the limiting support frame. The upper end of the limiting support frame is movably connected with the position of the exhaust groove. The bottom end position of the limiting support frame is in contact with the outer surface of the leather.

[0011] Preferably, a blocking rod is fixedly connected to the inner wall at the bottom end of the through-flow channel. A plurality of placement plates are provided on the outer wall of the blocking rod. A communication hole with both outer walls communicating is provided in the placement plate. The inner wall of the communication hole is movably connected with the outer wall of the blocking rod. The inner wall circumference of the communication hole is larger than the outer wall circumference of the blocking rod. A grinding wheel is rotatably connected to the bottom outer wall of the placement plate. The outer wall of the grinding wheel is in movable contact with the outer surface of the leather.

[0012] Preferably, one outer wall of the placement plate is fixedly connected with an extension plate, the extension plate is located in the circulation channel, and the upper outer wall of the extension plate is flush with the upper outer wall of the limit support frame.

[0013] Preferably, a connecting magnet I is fixedly installed on one outer wall of the connecting fan blade, a connecting magnet II is fixedly connected to the upper port position of the circulation channel where the extension plate is located, and the connecting magnet I and the connecting magnet II are magnetically connected.

[0014] Preferably, a limit bearing is movably connected to the outer wall surface of the installation sleeve, a hinge I is fixedly connected to the upper port outer wall of the limit support frame, the top outer wall of the hinge I is fixedly connected to the bottom outer wall of the limit bearing, and the limit support frame is hinged to the outer wall of the limit bearing through the hinge I.

[0015] Preferably, a placement groove is formed in the inner outer wall of the limit support frame, a hinge III is fixedly connected to the inner wall of the placement groove, a hinge II is fixedly connected to the bottom outer wall of the installation sleeve, one outer wall of the hinge II is fixedly connected to the bottom outer wall of the support plate, the installation sleeve is hinged to the outer wall of the support plate through the hinge II, and the limit support frame is hinged to the outer wall of the support plate through the hinge III.

[0016] Preferably, a hinge I is fixedly connected to one outer wall of the vertical motor, the hinge I is located outside the installation sleeve, clamping grooves are formed in both outer walls of the installation sleeve, a connecting gear is arranged in the inner wall of the clamping groove, a threaded rod is fixedly connected to the bottom outer wall of the connecting gear, a threaded groove is formed in the inner wall of the limit bearing, the inner wall of the threaded groove is in threaded connection with the outer wall of the threaded rod, connecting blocks are fixedly connected to both the bottom outer wall of the threaded rod and the top outer wall of the connecting gear, the outer wall of the connecting block is rotatably connected to the outer wall of the installation sleeve, and the outer wall of the connecting gear is meshed with the outer wall of the limit tooth groove.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] In the present invention, when the staff is performing the polishing work, the polishing and grinding work of the operating motor synchronously drives the connecting fan blade to rotate, so that air is inhaled from the ventilation holes to generate flowing wind power inside the mounting sleeve, and finally discharged from the exhaust groove to connect to the circulation channel. The flowing wind power blows from the circulation channel to the outer surface of the leather, purging the polished area of the leather, thereby purging away part of the cutin and dust generated on the leather due to grinding and polishing, facilitating the staff to perform the next step of the polishing work without the staff purging by themselves, saving time and effort. At the same time, the flowing wind power can perform pneumatic cooling treatment on the just-polished position of the leather, avoiding the high temperature generated by the leather due to grinding and polishing. Further, in the present invention, a grinding wheel is installed inside the limit support frame. When the vertical motor drives the polishing device to move reciprocally, it can synchronously drive the grinding wheel to friction-polish on the outer surface of the leather, further improving the polishing effect and working efficiency of the device. At the same time, due to the pneumatic movement generated by the flowing wind power in the circulation channel, the extension plate will vibrate, and the vibration of the extension plate drives the grinding wheel to vibrate synchronously, accelerating the friction frequency of the grinding wheel on the leather surface, thereby improving the polishing effect of the grinding wheel. At the same time, the present invention is provided with limit tooth grooves on the connecting fan blade. When the connecting fan blade rotates to generate flowing wind power, the high-speed moving limit tooth grooves will also magnetically attract the passing connecting magnet two, causing the connecting magnet two to drive the extension plate to shake at a high frequency. The shaking of the connecting magnet two further improves the vibration frequency of the grinding wheel, improving the polishing effect and working efficiency of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure in the upper right direction of the present invention.

[0020] Figure 2 It is a schematic diagram of the overall structure in the left rear direction of the present invention.

[0021] Figure 3 It is a front view structural schematic diagram of the present invention.

[0022] Figure 4 It is a front view structural schematic diagram of the polishing device of the present invention.

[0023] Figure 5 It is a schematic diagram of the structure in the upper right direction of the polishing device of the present invention.

[0024] Figure 6 It is a schematic diagram of the structure in the right rear direction of the polishing device of the present invention.

[0025] Figure 7 It is a schematic diagram of the internal structure cross-section of the polishing device of the present invention.

[0026] Figure 8 It is Figure 1 The enlarged schematic diagram of the structure at A in

[0027] Figure 9 is Figure 7 The enlarged schematic diagram of the structure at position B in

[0028] Figure 10 is Figure 7 The enlarged schematic diagram of the structure at position C in

[0029] In the figure: 1. Installation base plate; 2. Frame; 3. Supporting block; 4. Spring connecting rod; 5. Working platform; 6. Elevating frame; 7. Vertical motor; 8. Support platform; 9. Telescopic rod; 10. Installation sleeve; 11. Flange connecting plate; 12. Running motor; 13. Driving shaft rod; 14. Fixed plate; 15. Polishing disc; 16. Connecting fan blade; 17. Ventilation hole; 18. Exhaust slot; 19. Limit support frame; 20. Flow passage; 21. Extension plate; 22. Placement plate; 23. Communication hole; 24. Stop bar; 25. Grinding wheel; 26. Limit bearing; 27. Hinge 1; 28. Support plate; 29. Hinge 2; 30. Hinge 3; 31. Placement groove; 32. Card slot; 33. Connecting block; 34. Threaded rod; 35. Connecting gear; 36. Thread groove; 37. Limit tooth groove; 38. Connecting magnet 1; 39. Connecting magnet 2; 40. Top plate. Specific embodiments

[0030] In order to clearly and completely describe the purpose, technical solution of the present invention, and make the advantages more clear, the following further details the embodiments of the present invention with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all of the embodiments, and are only used to explain the embodiments of the present invention, not to limit the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0031] Example 1, please refer to Figures 1 to 10, the present invention provides a technical solution: a surface polishing device for leather processing, including a mounting base plate 1. The top outer wall of the mounting base plate 1 is fixedly connected with a frame 2. The outer walls on both sides of the frame 2 are fixedly connected with supporting blocks 3. The top outer wall of the supporting block 3 is fixedly connected with a spring connecting rod 4. The top outer walls of the two spring connecting rods 4 are fixedly connected with the same working platform 5. The top outer wall of the mounting base plate 1 is fixedly connected with a heightening frame 6. The top outer wall of the heightening frame 6 is fixedly connected with a vertical motor 7. The axis of the vertical motor 7 is fixedly connected with a telescopic rod 9. The outer wall of the end of the telescopic rod 9 away from the vertical motor 7 is fixedly connected with a polishing device. The polishing device is located directly above the working platform 5. One side outer wall of the vertical motor 7 is fixedly connected with a supporting platform 8. The polishing device includes a mounting sleeve 10, a top plate 40, a flange connecting plate 11, a running motor 12, a driving shaft rod 13, a fixing plate 14 and a polishing disc 15. The outer wall of one side of the mounting sleeve 10 is fixedly connected with the outer wall of the end of the telescopic rod 9 away from the vertical motor 7. The outer walls around the top plate 40 are fixedly connected with the inner wall of the top of the mounting sleeve 10. The outer walls around the flange connecting plate 11 are fixedly connected with the inner wall of the middle of the mounting sleeve 10. The outer wall of one end of the running motor 12 is fixedly connected with the top outer wall of the flange connecting plate 11. The top outer wall of the driving shaft rod 13 passes through the flange connecting plate 11 and is fixedly connected with the axis of the running motor 12. The bottom outer wall of the driving shaft rod 13 is fixedly connected with the top outer wall of the fixing plate 14. The outer walls around the fixing plate 14 are rotatably connected with the inner wall of the bottom of the mounting sleeve 10. The top outer wall of the polishing disc 15 is fixedly connected with the bottom outer wall of the fixing plate 14. The bottom outer wall of the polishing disc 15 is movably connected with the top outer wall of the working platform 5.

[0032] In the present invention, the staff places the leather to be processed on the working platform 5, then steps on the pedal to lift the working platform 5 through the spring connecting rod 4, so that the polishing mechanism can slightly press on the surface of the leather. Then, the running motor 12 is started. The running motor 12 drives the fixing plate 14 and the polishing disc 15 to rotate through the driving shaft rod 13, and uses the rotation of the polishing disc 15 to polish the outer surface of the leather. At the same time, the vertical motor 7 is started to drive the telescopic rod 9 to expand and contract, driving the polishing disc 15 to move on the outer surface of the leather, increasing the polishing area of the leather. Through this device, the polishing work of the leather is completed.

[0033] Embodiment 2, on the basis of Embodiment 1, ventilation holes 17 communicating with the inner wall are formed in the outer wall of the installation sleeve 10, a connecting fan blade 16 is fixedly connected to the outer wall of the driving shaft rod 13, a plurality of exhaust grooves 18 communicating with the inner wall are formed in the outer wall of the installation sleeve 10, a plurality of limiting support frames 19 are arranged on the outer wall of the installation sleeve 10, the limiting support frames 19 are inclined, a flow channel 20 with both ends communicating is formed in the limiting support frame 19, the upper end of the limiting support frame 19 is movably connected to the position of the exhaust groove 18, the bottom end of the limiting support frame 19 is in contact with the outer surface of the leather, a stop rod 24 is fixedly connected to the inner wall of the bottom end of the flow channel 20, a plurality of placement plates 22 are arranged on the outer wall of the stop rod 24, communication holes 23 communicating with both outer walls are formed in the placement plates 22, the inner wall of the communication hole 23 is movably connected to the outer wall of the stop rod 24, the inner wall circumference of the communication hole 23 is larger than the outer wall circumference of the stop rod 24, a grinding wheel 25 is rotatably connected to the bottom outer wall of the placement plate 22, the outer wall of the grinding wheel 25 is in movable contact with the outer surface of the leather, an extension plate 21 is fixedly connected to one outer wall of the placement plate 22, the extension plate 21 is located in the flow channel 20, the upper outer wall of the extension plate 21 is flush with the upper outer wall of the limiting support frame 19, a connecting magnet 1 38 is fixedly installed on one outer wall of the connecting fan blade 16, a connecting magnet 2 39 is fixedly connected to the upper port position of the flow channel 20 where the extension plate 21 is located, and the connecting magnet 1 38 is magnetically connected to the connecting magnet 2 39.

[0034] In the present invention, when the staff is performing polishing work, the polishing and grinding work of the operating motor 12 synchronously drives the connecting fan blade 16 to rotate, so that air is inhaled from the ventilation holes 17 to generate flowing wind power inside the mounting sleeve 10, and finally discharged from the exhaust slot 18 to connect to the circulation channel 20. The flowing wind power blows from the circulation channel 20 to the outer surface of the leather, purging the polished area of the leather, thereby purging away part of the cutin and dust generated due to grinding and polishing on the leather, facilitating the staff to perform the next step of polishing work without the staff purging by themselves, saving time and effort. At the same time, the flowing wind power can perform pneumatic cooling treatment on the just-polished position of the leather, avoiding the high temperature generated by the leather due to grinding and polishing. Further, in the present invention, a grinding wheel 25 is installed in the limit support frame 19. When the vertical motor 7 drives the polishing device to move reciprocally, the grinding wheel 25 can be synchronously driven to friction-polish on the outer surface of the leather, further improving the polishing effect and working efficiency of the present device. At the same time, the pneumatic movement generated by the flowing wind power in the circulation channel 20 will cause the extension plate 21 to vibrate, and the vibration of the extension plate 21 drives the grinding wheel 25 to vibrate synchronously, accelerating the friction frequency of the grinding wheel 25 on the leather surface, thereby improving the polishing effect of the grinding wheel 25. At the same time, in the present invention, a connecting magnet one 38 is installed on the connecting fan blade 16. When the connecting fan blade 16 rotates to generate flowing wind power, the high-speed moving connecting magnet one 38 will also magnetically attract the passing connecting magnet two 39, causing the connecting magnet two 39 to drive the extension plate 21 to perform high-frequency shaking. The shaking of the connecting magnet two 39 further improves the vibration frequency of the grinding wheel 25, improving the polishing effect and working efficiency of the present device.

[0035] Embodiment 3. On the basis of Embodiment 2, a limit bearing 26 is movably connected to the outer wall surface of the installation sleeve 10. A hinge 27 is fixedly connected to the outer wall of the upper port of the limit support frame 19. The top outer wall of the hinge 27 is fixedly connected to the bottom outer wall of the limit bearing 26. The limit support frame 19 is hinged to the outer wall of the limit bearing 26 through the hinge 27. A placement groove 31 is provided on the inner outer wall of the limit support frame 19. A hinge 30 is fixedly connected to the inner wall of the placement groove 31. A hinge 29 is fixedly connected to the bottom outer wall of the installation sleeve 10. One outer wall of the hinge 29 is fixedly connected to the bottom outer wall of the support plate 28. The installation sleeve 10 is hinged to the outer wall of the support plate 28 through the hinge 29. The limit support frame 19 is hinged to the outer wall of the support plate 28 through the hinge 30. A hinge 27 is fixedly connected to one outer wall of the vertical motor 7. The hinge 27 is located outside the installation sleeve 10. Card slots 32 are provided on both outer walls of the installation sleeve 10. A connecting gear 35 is provided on the inner wall of the card slot 32. A threaded rod 34 is fixedly connected to the bottom outer wall of the connecting gear 35. A threaded groove 36 is provided on the inner wall of the limit bearing 26. The inner wall of the threaded groove 36 is threadedly connected to the outer wall of the threaded rod 34. Connecting blocks 33 are fixedly connected to the bottom outer wall of the threaded rod 34 and the top outer wall of the connecting gear 35. The outer wall of the connecting block 33 is rotatably connected to the outer wall of the installation sleeve 10. The outer wall of the connecting gear 35 is meshed with the outer wall of the limit tooth groove 37.

[0036] In the present invention, while the vertical motor 7 drives the polishing device to reciprocate, the connecting gear 35 will rotate meshingly on the outer wall of the limit tooth groove 37. The connecting gear 35 and the threaded rod 34 rotate synchronously. By using the meshing connection between the threaded groove 36 and the threaded rod 34, the limit bearing 26 can move reciprocally, thereby driving the end of the limit support frame 19 to press down, enabling the limit support frame 19 to open and close and retract to the surface of the installation sleeve 10. Moreover, the opening and closing of the limit support frame 19 can increase the moving range of the grinding wheel 25, further improving the polishing effect and working efficiency of the present device.

[0037] Working principle and usage process of the present invention: In the present invention, the staff places the leather to be processed on the working platform 5, and then steps on the pedal to lift the working platform 5 through the spring connecting rod 4, so that the polishing mechanism can slightly press on the leather surface. Subsequently, the operating motor 12 is started, and the operating motor 12 drives the fixed plate 14 and the polishing disc 15 to rotate through the drive shaft rod 13, and the outer surface of the leather is polished by the rotation of the polishing disc 15. At the same time, the vertical motor 7 is started to drive the telescopic rod 9 to expand and contract, driving the polishing disc 15 to move on the outer surface of the leather, increasing the polishing area of the leather. Through this device, the polishing work of the leather is completed. In the present invention, when the staff is performing the polishing work, the polishing and grinding work of the operating motor 12 synchronously drives the connecting fan blade 16 to rotate, so that air is inhaled from the ventilation hole 17 to generate flowing wind power in the mounting sleeve 10, and finally discharged from the exhaust slot 18 to connect to the circulation channel 20. The flowing wind power blows from the circulation channel 20 to the outer surface of the leather, purging the polished area of the leather, thereby purging part of the cutin and dust generated on the leather due to polishing, facilitating the staff to perform the next step of polishing work without the staff purging by themselves, saving time and effort. At the same time, the flowing wind power can perform pneumatic cooling treatment on the just-polished position of the leather, avoiding the high temperature generated by the leather due to polishing. Further, in the present invention, a grinding wheel 25 is installed in the limit support frame 19. When the vertical motor 7 drives the polishing device to move reciprocally, the grinding wheel 25 can be synchronously driven to friction-polish on the outer surface of the leather, further improving the polishing effect and working efficiency of the device. At the same time, the pneumatic movement generated by the flowing wind power in the circulation channel 20 will cause the extension plate 21 to vibrate, and the vibration of the extension plate 21 drives the grinding wheel 25 to vibrate synchronously, accelerating the friction frequency of the grinding wheel 25 on the leather surface, thereby improving the polishing effect of the grinding wheel 25. At the same time, in the present invention, a connecting magnet 1 38 is installed on the connecting fan blade 16. When the connecting fan blade 16 rotates to generate flowing wind power, the rapidly moving connecting magnet 1 38 will also magnetically attract the passing connecting magnet 2 39, causing the connecting magnet 2 39 to drive the extension plate 21 to perform high-frequency shaking. The shaking of the connecting magnet 2 39 further improves the vibration frequency of the grinding wheel 25, improving the polishing effect and working efficiency of the device. In the present invention, while the vertical motor 7 drives the polishing device to move reciprocally, the connecting gear 35 will meshingly rotate on the outer wall of the limit tooth groove 37, and the connecting gear 35 and the threaded rod 34 rotate synchronously. Using the meshing connection of the thread groove 36 and the threaded rod 34, the limit bearing 26 can move reciprocally, thereby driving the end of the limit support frame 19 to press down, enabling the limit support frame 19 to open and retract to the surface of the mounting sleeve 10, and the opening and closing of the limit support frame 19 can increase the moving range of the grinding wheel 25, further improving the polishing effect and working efficiency of the device.

[0038] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art will appreciate that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A surface polishing device for leather processing, comprising a mounting base plate (1), characterized in that: The top outer wall of the installation base plate (1) is fixedly connected with a frame (2). The two outer walls of the frame (2) are fixedly connected with supporting blocks (3). The top outer wall of the supporting block (3) is fixedly connected with a spring connecting rod (4). The top outer walls of the two spring connecting rods (4) are fixedly connected with the same working platform (5). The top outer wall of the installation base plate (1) is fixedly connected with a heightening frame (6). The top outer wall of the heightening frame (6) is fixedly connected with a vertical motor (7). The axis of the vertical motor (7) is fixedly connected with a telescopic rod (9). The outer wall of the end of the telescopic rod (9) far from the vertical motor (7) is fixedly connected with a polishing device. The polishing device is located directly above the working platform (5). One side outer wall of the vertical motor (7) is fixedly connected with a support platform (8). The polishing device includes an installation sleeve (10), a top plate (40), a flange connecting plate (11), an operating motor (12), a driving shaft rod (13), a fixing plate (14), and a polishing disc (15). The outer wall of one side of the installation sleeve (10) is fixedly connected with the outer wall of the end of the telescopic rod (9) far from the vertical motor (7). The outer walls around the top plate (40) are fixedly connected with the inner wall of the top of the installation sleeve (10). The outer walls around the flange connecting plate (11) are fixedly connected with the inner wall of the middle of the installation sleeve (10). The outer wall of one end of the operating motor (12) is fixedly connected with the top outer wall of the flange connecting plate (11). The top outer wall of the driving shaft rod (13) passes through the flange connecting plate (11) and is fixedly connected with the axis of the operating motor (12). The bottom outer wall of the driving shaft rod (13) is fixedly connected with the top outer wall of the fixing plate (14). The outer walls around the fixing plate (14) are rotatably connected with the inner wall of the bottom of the installation sleeve (10). The top outer wall of the polishing disc (15) is fixedly connected with the bottom outer wall of the fixing plate (14). The bottom outer wall of the polishing disc (15) is movably connected with the top outer wall of the working platform (5). The outer wall of the installation sleeve (10) is provided with ventilation holes (17) communicating with the inner wall. The outer wall of the driving shaft rod (13) is fixedly connected with a connecting fan blade (16). The outer wall of the installation sleeve (10) is provided with a plurality of exhaust slots (18) communicating with the inner wall. The outer wall of the installation sleeve (10) is provided with a plurality of limiting support frames (19). The limiting support frames (19) are inclined. The limiting support frames (19) are provided with a through-channel (20) with both ends communicating. The upper end of the limiting support frame (19) is movably connected with the position of the exhaust slot (18). The bottom end position of the limiting support frame (19) is in contact with the outer surface of the leather. The inner wall of the bottom end of the through-channel (20) is fixedly connected with a stop rod (24). A plurality of placement plates (22) are arranged on the outer wall of the stop rod (24). The placement plates (22) are provided with communication holes (23) with both side outer walls communicating. The inner wall of the communication hole (23) is movably connected with the outer wall of the stop rod (24).The inner wall perimeter of the communication hole (23) should be greater than the outer wall perimeter of the retaining rod (24). A grinding wheel (25) is rotatably connected to the bottom outer wall of the mounting plate (22), and the outer wall of the grinding wheel (25) is movably fitted to the outer surface of the leather., 2. The surface polishing device for leather processing according to claim 1, characterized in that: One side outer wall of the placement plate (22) is fixedly connected with an extension plate (21). The extension plate (21) is located in the circulation channel (20), and the upper end outer wall of the extension plate (21) is flush with the upper end outer wall of the limit support frame (19).

3. A surface polishing device for leather processing according to claim 2, characterized in that: One side outer wall of the connecting fan blade (16) is fixedly installed with a connecting magnet I (38). The extension plate (21) is fixedly connected at the upper port position of the circulation channel (20) with a connecting magnet II (39). The connecting magnet I (38) is magnetically connected with the connecting magnet II (39).

4. A surface polishing device for leather processing according to claim 3, characterized in that: The outer wall surface of the installation sleeve (10) is movably connected with a limit bearing (26). The upper port outer wall of the limit support frame (19) is fixedly connected with a hinge I (27). The top outer wall of the hinge I (27) is fixedly connected with the bottom outer wall of the limit bearing (26). The limit support frame (19) is hinged to the outer wall of the limit bearing (26) through the hinge I (27).

5. The surface polishing device for leather processing according to claim 4, characterized in that: A placement groove (31) is formed in the inner side outer wall of the limit support frame (19). The inner wall of the placement groove (31) is fixedly connected with a hinge III (30). The bottom outer wall of the installation sleeve (10) is fixedly connected with a hinge II (29). One side outer wall of the hinge II (29) is fixedly connected with the bottom outer wall of the support plate (28). The installation sleeve (10) is hinged to the outer wall of the support plate (28) through the hinge II (29). The limit support frame (19) is hinged to the outer wall of the support plate (28) through the hinge III (30).

6. The surface polishing device for leather processing according to claim 5, characterized in that: One side outer wall of the vertical motor (7) is fixedly connected with a hinge I (27). The hinge I (27) is located outside the installation sleeve (10). Card slots (32) are formed in both side outer walls of the installation sleeve (10). A connecting gear (35) is arranged on the inner wall of the card slot (32). The bottom outer wall of the connecting gear (35) is fixedly connected with a threaded rod (34). A threaded groove (36) is formed in the inner wall of the limit bearing (26). The inner wall of the threaded groove (36) is threadedly connected with the outer wall of the threaded rod (34). The bottom outer wall of the threaded rod (34) and the top outer wall of the connecting gear (35) are both fixedly connected with a connecting block (33). The outer wall of the connecting block (33) is rotatably connected with the outer wall of the installation sleeve (10). The outer wall of the connecting gear (35) is meshed with the outer wall of the limit tooth groove (37).

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