Automatic polishing device for handle accessories

Abstract

The present invention discloses an automatic polishing device for handle accessories, comprising a workbench, wherein the workbench is provided with a horizontal polishing mechanism, an upper polishing mechanism and a lower polishing mechanism in sequence along the circumferential direction, and a clamping mechanism is rotatably provided in the middle of the workbench. When the present invention is in operation, a batch of handle accessories can be automatically clamped by the clamping device, and the handle accessories are contacted with the horizontal polishing wheel, the upper polishing wheel and the lower polishing wheel in sequence as the clamping device rotates, and the polishing treatment of the middle, upper and lower ends of the handle accessories is completed successively. Compared with manual operation, the safety hazard is reduced, and the uniformity and consistency of the polishing of the handle accessories are improved. Moreover, the positions of the horizontal polishing wheel, the upper polishing wheel and the lower polishing wheel on the workbench can be adjusted, so as to adapt to the polishing operation of handle accessories of different specifications.

Description

Technical Field

[0001] The invention relates to the field of handle accessory processing, and in particular to an automatic polishing device for a handle accessory. Background Art

[0002] Bakelite handles are a common mechanical operating accessory. After the handle accessories are processed and formed, the surface of the accessories needs to be polished to remove the external burrs of the product and make the surface of the finished product smooth and flat. At present, the polishing of handle parts is mainly done by operators holding the accessories to contact the rotating polishing wheel. On the one hand, this polishing method has a high risk factor. Some manufacturers use automatic clamps to clamp the handle parts, but the existing clamps can only clamp one accessory at a time. During the operation, the accessories need to be disassembled and clamped after each polishing, which requires frequent opening and closing of the equipment, and the work efficiency is poor. Summary of the invention

[0003] The purpose of the present invention is to provide an automatic polishing device for handle accessories to solve the technical problems mentioned in the above background technology.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] The invention discloses an automatic polishing device for a handle accessory, comprising a workbench, wherein a horizontal polishing mechanism, an upper polishing mechanism and a lower polishing mechanism are sequentially arranged on the workbench along the circumferential direction, and a clamping mechanism is rotatably arranged in the middle of the workbench.

[0006] The horizontal polishing mechanism includes an adjustably mounted mounting frame installed in the middle of the workbench, a first motor is vertically arranged on the mounting frame, a driving shaft of the first motor is connected to the input end of a vertically arranged first reducer through a belt drive, and a horizontal polishing wheel is arranged at the output end of the first reducer.

[0007] The upper polishing mechanism includes an adjustable mounting platform installed on the workbench, a second motor is arranged on the mounting platform in a horizontal direction, a driving shaft of the second motor is connected to the input end of a horizontally arranged second reducer through a belt drive, and an upper polishing wheel is arranged at the output end of the second reducer.

[0008] The lower polishing mechanism includes an adjustably mounted mounting plate on the workbench and having a height less than that on the mounting plate, a third motor is arranged horizontally on the mounting plate, a driving shaft of the third motor is connected to the input end of a horizontally arranged third reducer through a belt drive, and a lower polishing wheel is arranged at the output end of the third reducer.

[0009] The clamping mechanism includes a rotating shaft rotatably arranged in the middle of the workbench, the lower part of the rotating shaft is connected to the driving shaft of the fourth motor arranged in the workbench, the upper part of the rotating shaft is fixedly connected to a turntable arranged above the workbench, a plurality of mounting seats for mounting handle accessories are evenly and rotatably arranged on the turntable, and a fifth motor for driving the plurality of mounting seats to rotate is arranged inside the workbench; a plurality of driving cylinders corresponding to each of the mounting seats are evenly arranged on the turntable, the telescopic end of each driving cylinder is vertically arranged and fixedly connected to one end of the connecting plate, and a clamping sleeve is rotatably arranged on the other end of the connecting plate, and each of the clamping sleeves is coaxially arranged with each of the mounting seats.

[0010] Furthermore, the workbench is provided with an adjustment groove at the overlapping position of its top plate and one side plate, and a first longitudinal slide is fixedly arranged in the middle of the side plate where the adjustment groove is located, and two first longitudinal slide rails are symmetrically arranged on the first longitudinal slide, and a first longitudinal lead screw is rotatably arranged between the two first longitudinal slide rails, one end of the first longitudinal lead screw extends to the outside of the first longitudinal slide and is provided with a first operating wheel; a first transverse slide is slidably arranged on the two first longitudinal slide rails, and a threaded hole matching the first longitudinal lead screw is arranged on the bottom plate of the first transverse slide; two first transverse slide rails are symmetrically arranged on the first transverse slide, and a first transverse lead screw is rotatably arranged between the two first transverse slide rails, one end of the first transverse lead screw extends to the outside of the first transverse slide and is provided with a second operating wheel; the mounting frame is slidably arranged on the two first transverse slide rails, and a threaded hole matching the first transverse lead screw is arranged on the bottom plate of the mounting frame.

[0011] Furthermore, the workbench is fixedly provided with a second transverse slide at a position adjacent to the adjusting groove, two second transverse slides are symmetrically provided on the second transverse slide, and a second transverse lead screw is rotatably provided in the middle of the two second transverse slides, one end of the second transverse lead screw extends to the outside of the second transverse slide and is provided with a third operating wheel; a second longitudinal slide is slidably provided on the two second transverse slides, and a threaded hole matching the second transverse lead screw is provided on the bottom plate of the second longitudinal slide; two second longitudinal slides are symmetrically provided on the second longitudinal slide, and a second longitudinal lead screw is rotatably provided in the middle of the two second longitudinal slides, one end of the second longitudinal lead screw extends to the outside of the second longitudinal slide and is provided with a fourth operating wheel; the mounting platform is slidably provided on the two second longitudinal slides and a threaded hole matching the second longitudinal lead screw is provided on its lower half.

[0012] Furthermore, the workbench is fixedly provided with a third longitudinal slide at a position opposite to the adjusting groove, and two third longitudinal slide rails are symmetrically provided on the third longitudinal slide, and a third longitudinal lead screw is rotatably provided between the two third longitudinal slide rails, one end of the third longitudinal lead screw extends to the outside of the third longitudinal slide and is provided with a fifth operating wheel; a third transverse slide is slidably provided on the two third longitudinal slide rails, and a threaded hole matching the third longitudinal lead screw is provided on the bottom plate of the third transverse slide; two third transverse slide rails are symmetrically provided on the third transverse slide, and a third transverse lead screw is rotatably provided between the two third transverse slide rails, one end of the third transverse lead screw extends to the outside of the third transverse slide and is provided with a sixth operating wheel; the mounting plate is slidably provided on the two third transverse slide rails, and a threaded hole matching the third transverse lead screw is provided in the middle part of the mounting plate.

[0013] Furthermore, the upper end of the mounting seat is provided with a mounting head for sleeve-connecting the handle accessory.

[0014] Furthermore, the lower end of each mounting seat is located between the workbench and the turntable and is provided with a driven wheel. The driving shaft of the fifth motor is connected to the input end of the fifth reducer. The output end of the fifth reducer extends to above the workbench and is provided with a driving wheel. A transmission belt is sleeved between the plurality of driven wheels and the driving wheel, and at least one driven wheel near the driving wheel is not in contact with the transmission belt.

[0015] Furthermore, the workbench is provided with a protective cover on the outer side of the turntable.

[0016] Furthermore, the protective cover is provided with an arc-shaped contact piece in the area where the mounting seat corresponding to the driven wheel is not in contact with the transmission belt, and a contact switch for contact induction with the arc-shaped contact piece is provided on the turntable near each mounting seat.

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

[0018] When the present invention is working, a batch of handle accessories can be automatically clamped by a clamping device. When the handle accessories rotate with the clamping device, they contact with the horizontal polishing wheel, the upper polishing wheel and the lower polishing wheel in sequence, and the polishing process of the middle, upper and lower ends of the handle accessories is completed in sequence. Compared with manual work, the safety hazard is reduced, and the uniformity and consistency of the polishing of the handle accessories are improved. Moreover, the positions of the horizontal polishing wheel, the upper polishing wheel and the lower polishing wheel on the workbench can be adjusted, which can adapt to the polishing operation of handle accessories of different specifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below in conjunction with the accompanying drawings.

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the internal structure of the workbench;

[0022] Figure 3 It is a schematic diagram of the transmission connection between the driving wheel and the driven wheel;

[0023] Explanation of the accompanying drawings: 1. workbench; 2. mounting frame; 3. adjustment slot; 4. first longitudinal slide; 5. first longitudinal slide rail; 6. first longitudinal lead screw; 7. first operating wheel; 8. first transverse slide; 9. first transverse slide rail; 10. first transverse lead screw; 11. second operating wheel; 12. first reducer; 13. horizontal polishing wheel; 14. mounting table; 15. second transverse slide; 16. second transverse slide rail; 17. second transverse lead screw; 18. third operating wheel; 19. second longitudinal slide; 20. second longitudinal slide rail; 21. second longitudinal lead screw; 22. fourth operating wheel; 23. second motor; 24. second reducer; 25. upper polishing wheel; 26. mounting plate; 27 , the third longitudinal slide; 28, the third longitudinal slide rail; 29, the third longitudinal lead screw; 30, the fifth operating wheel; 31, the third transverse slide; 32, the third transverse slide rail; 33, the third transverse lead screw; 34, the sixth operating wheel; 35, the third reducer; 36, the lower polishing wheel; 37, the first motor; 38, the third motor; 39, the rotating shaft; 40, the fourth reducer; 41, the fourth motor; 42, the turntable; 43, the mounting seat; 44, the mounting head; 45, the fifth motor; 46, the driven wheel; 47, the fifth reducer; 48, the driving wheel; 49, the transmission belt; 50, the driving cylinder; 51, the connecting plate; 52, the clamping sleeve; 53, the protective cover; 54, the arc contact piece; 55, the contact switch. DETAILED DESCRIPTION

[0024] like Figure 1-Figure 3 As shown, an automatic polishing device for handle accessories comprises a workbench 1, on which a horizontal polishing mechanism, an upper polishing mechanism and a lower polishing mechanism are sequentially arranged along the circumferential direction, and a clamping mechanism is rotatably arranged in the middle of the workbench.

[0025] The horizontal polishing mechanism includes an adjustable mounting frame 2 installed in the middle of the workbench 1. Specifically, the workbench 1 is provided with an adjustment slot 3 at the overlap position between the top plate and one side plate. A first longitudinal slide 4 is fixedly installed in the middle of the side plate where the adjustment slot 3 is located. Two first longitudinal slide rails 5 are symmetrically fixedly installed on the first longitudinal slide 4, and a first longitudinal lead screw 6 is rotatably installed between the two first longitudinal slide rails. One end of the first longitudinal lead screw 6 extends to the outside of the first longitudinal slide 4 and is installed with a first operating wheel 7. A first transverse slide 8 is slidably arranged on the two first longitudinal slide rails 5. Two sliders matching the two first longitudinal slide rails 5 are symmetrically arranged at the bottom of the first transverse slide 8. A threaded hole matching the first longitudinal lead screw 6 is opened on the bottom plate of the first transverse slide 8. Two first transverse slide rails 9 are symmetrically installed on the first transverse slide 8, and a first transverse lead screw 10 is rotatably installed between the two first transverse slide rails 9. One end of the first transverse lead screw 10 extends to the outside of the first transverse slide 8 and is installed with a second operating wheel 11. The mounting frame 2 is slidably arranged on the two first transverse slide rails 9, and two sliders respectively matched with the two first transverse slide rails 9 are symmetrically arranged at the bottom of the mounting frame 2, and a threaded hole matched with the first transverse lead screw 10 is opened on the bottom plate of the mounting frame 2.

[0026] A first motor 37 is installed in the upper part of the mounting frame 2 in the vertical direction. The driving shaft of the first motor 37 is connected to the input end of the vertically arranged first reducer 12 through a belt drive. A horizontal polishing wheel 13 is installed at the output end of the first reducer 12. After installation, the horizontal polishing wheel 13 corresponds to the middle part of the handle accessory to be polished.

[0027] The upper polishing mechanism includes an adjustable mounting table 14 mounted on the workbench. Specifically, the workbench 1 is fixedly mounted with a second transverse slide 15 at a position adjacent to the adjustment slot 3. Two second transverse slide rails 16 are symmetrically mounted on the second transverse slide 15, and a second transverse lead screw 17 is rotatably mounted in the middle of the two second transverse slide rails 16. One end of the second transverse lead screw 17 extends to the outside of the second transverse slide 15 and is mounted with a third operating wheel 18. A second longitudinal slide 19 is slidably arranged on the two second transverse slide rails 16. Two sliders respectively matched with the two second transverse slide rails 16 are symmetrically arranged at the bottom of the second longitudinal slide 19. A threaded hole matched with the second transverse lead screw 17 is opened on the bottom plate of the second longitudinal slide 19. Two second longitudinal slide rails 20 are symmetrically mounted on the second longitudinal slide 19, and a second longitudinal lead screw 21 is rotatably mounted in the middle of the two second longitudinal slide rails 20. One end of the second longitudinal lead screw 21 extends outside the second longitudinal slide 19 and is mounted with a fourth operating wheel 22. The mounting platform 14 is slidably mounted on the two second longitudinal slide rails 20, and two sliders respectively matched with the two second longitudinal slide rails 20 are symmetrically mounted at the bottom of the mounting platform 14, and a threaded hole matched with the second longitudinal lead screw 21 is opened in the lower half thereof.

[0028] A second motor 23 is horizontally mounted on the mounting platform 14. The driving shaft of the second motor 23 is connected to the input end of a horizontally arranged second reducer 24 through a belt drive. An upper polishing wheel 25 is mounted on the output end of the second reducer 24. After installation, the polishing wheel 25 corresponds to the upper end of the handle accessory to be polished.

[0029] The lower polishing mechanism includes an adjustable mounting plate 26 mounted on the workbench 1 and having a height less than that of the mounting platform 14. Specifically, a third longitudinal slide 27 is fixedly mounted on the workbench 1 at a position opposite to the adjustment slot 3. Two third longitudinal slide rails 28 are symmetrically mounted on the third longitudinal slide 27, and a third longitudinal lead screw 29 is rotatably mounted between the two third longitudinal slide rails 28. One end of the third longitudinal lead screw 29 extends to the outside of the third longitudinal slide 27 and is mounted with a fifth operating wheel 30. A third transverse slide 31 is slidably arranged on the two third longitudinal slide rails 28. Two sliders respectively matched with the two third transverse slide rails 28 are symmetrically arranged at the bottom of the third transverse slide 31. A threaded hole matched with the third longitudinal lead screw 29 is opened on the bottom plate of the third transverse slide 31. Two third transverse rails 32 are symmetrically mounted on the third transverse slide 31, and a third transverse lead screw 33 is rotatably mounted between the two third transverse rails 32. One end of the third transverse lead screw 33 extends to the outside of the third transverse slide 31 and is mounted with a sixth operating wheel 34. The mounting plate 26 is slidably mounted on the two third transverse rails 31, and a threaded hole matching the third transverse lead screw 33 is opened in the middle of the mounting plate 26.

[0030] A third motor 38 is horizontally mounted on the mounting plate 26. The driving shaft of the third motor 38 is connected to the input end of a horizontally arranged third reducer 35 through a belt drive. A lower polishing wheel 36 is mounted on the output end of the third reducer 35. After installation, the lower polishing wheel 36 corresponds to the lower end of the handle accessory to be polished.

[0031] The clamping mechanism includes a rotating shaft 39 rotatably arranged in the middle of the workbench 1, and the lower part of the rotating shaft 39 is connected to the driving shaft of a fourth motor 41 arranged in the workbench 1 through a fourth reducer 40. The upper part of the rotating shaft 39 is fixedly connected to a rotating disk 42 arranged above the workbench 1, and the rotating shaft 39 and the rotating disk 42 are coaxially arranged.

[0032] A plurality of mounting seats 43 for mounting handle accessories are evenly and rotatably mounted on the turntable 42, and a mounting head 44 for sleeved the handle accessories is arranged at the upper end of each mounting seat 43. A fifth motor 45 for driving the plurality of mounting seats 43 to rotate is installed inside the workbench 1. Specifically, the lower end of each mounting seat 43 is located between the workbench 1 and the turntable 42 and is equipped with a driven wheel 46. The driving shaft of the fifth motor 45 is connected to the input end of the fifth reducer 47, and the output end of the fifth reducer 47 extends to the top of the workbench 1 and is equipped with a driving wheel 48. A transmission belt 49 is sleeved between the plurality of driven wheels 46 and the driving wheel 48, and at least one driven wheel 46 near the driving wheel 48 is not in contact with the transmission belt 49. In this embodiment, the number of driven wheels 46 in contact with the transmission belt 49 is set to three.

[0033] A plurality of driving cylinders 50 corresponding to each of the mounting seats 43 are evenly mounted on the turntable 42. The telescopic end of each of the driving cylinders 50 is vertically arranged and fixedly connected to one end of a connecting plate 51. A clamping sleeve 52 is rotatably mounted on the other end of the connecting plate 51. Each of the clamping sleeves 52 is coaxially arranged with each of the mounting seats 43.

[0034] The workbench 1 is detachably provided with a protective cover 53 on the outside of the turntable 42, and the protective cover 53 is fixedly provided with arc-shaped contact pieces 54 in the areas where the three mounting seats 43 corresponding to the driven wheel are not in contact with the transmission belt, and a contact switch 55 for contact induction with the arc-shaped contact piece 54 is installed on the turntable 42 at a position close to each mounting seat 43. Each of the contact switches is electrically connected to a controller uniformly provided on the workbench for each of the driving cylinders.

[0035] When the present invention is working, the operator sets the handle accessory to be polished on the mounting head, and then drives the cylinder to contract, so that the handle accessory is clamped between the mounting head and the clamping sleeve. The fourth motor drives the rotating disk to rotate, and the fifth motor drives the multiple mounting seats to rotate. During the rotation of the rotating disk, the handle accessory on the mounting seat contacts the horizontal polishing wheel, the upper polishing wheel and the lower polishing wheel installed on the workbench in turn, and the polishing treatment of the middle, upper and lower ends of the handle accessory is completed successively. When the polished handle accessory is mounted at the position corresponding to the arc-shaped contact piece when the rotating disk rotates, the lower driven wheel of the mounting seat at this position no longer contacts the transmission belt, so that the mounting seat itself no longer rotates when the rotating disk rotates to this position. In addition, after the contact switch close to the above-mentioned mounting seat contacts the arc-shaped contact piece, the induction signal is transmitted to the controller, and the controller controls the corresponding driving cylinder to extend, so that the clamping sleeve and the mounting head no longer clamp the handle accessory at this position. At this time, the operator can remove the handle accessory at this position and then place the handle accessory to be polished. As the turntable rotates, when the contact switch at that position is no longer in contact with the arc-shaped contact piece, the driving cylinder contracts again, so that the clamping sleeve and the mounting sleeve clamp the handle fitting to be polished, and the above operation process is repeated in sequence to complete the polishing operation of batches of handle fittings.

[0036] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. An automatic polishing device for handle accessories, characterized in that: It comprises a workbench, on which a horizontal polishing mechanism, an upper polishing mechanism and a lower polishing mechanism are sequentially arranged along the circumferential direction, and a clamping mechanism is rotatably arranged in the middle of the workbench; The horizontal polishing mechanism comprises an adjustable mounting frame installed in the middle of the workbench, a first motor is arranged on the mounting frame in a vertical direction, a driving shaft of the first motor is connected to an input end of a vertically arranged first reducer by a belt transmission, and a horizontal polishing wheel is arranged at an output end of the first reducer; The upper polishing mechanism comprises an adjustable mounting platform mounted on the workbench, a second motor is arranged on the mounting platform in a horizontal direction, a driving shaft of the second motor is connected to an input end of a horizontally arranged second reducer by a belt transmission, and an upper polishing wheel is arranged at an output end of the second reducer; The lower polishing mechanism includes an adjustable mounting plate mounted on the workbench and having a height less than that of the mounting plate, a third motor is arranged on the mounting plate in a horizontal direction, a driving shaft of the third motor is connected to an input end of a third reducer arranged horizontally by a belt transmission, and a lower polishing wheel is arranged at an output end of the third reducer; The clamping mechanism includes a rotating shaft rotatably arranged in the middle of the workbench, the lower part of the rotating shaft is connected to the driving shaft of the fourth motor arranged in the workbench, the upper part of the rotating shaft is fixedly connected to a turntable arranged above the workbench, a plurality of mounting seats for mounting handle accessories are evenly and rotatably arranged on the turntable, and a fifth motor for driving the plurality of mounting seats to rotate is arranged inside the workbench; a plurality of driving cylinders corresponding to each of the mounting seats are evenly arranged on the turntable, the telescopic end of each driving cylinder is vertically arranged and fixedly connected to one end of the connecting plate, and a clamping sleeve is rotatably arranged on the other end of the connecting plate, and each of the clamping sleeves is coaxially arranged with each of the mounting seats.

2. The automatic polishing device for handle accessories according to claim 1, characterized in that: The workbench is provided with an adjustment groove at the overlapping position of its top plate and one side plate, and a first longitudinal slide is fixedly arranged in the middle of the side plate where the adjustment groove is located, and two first longitudinal slide rails are symmetrically arranged on the first longitudinal slide, and a first longitudinal lead screw is rotatably arranged between the two first longitudinal slide rails, one end of the first longitudinal lead screw extends to the outside of the first longitudinal slide and is provided with a first operating wheel; a first transverse slide is slidably arranged on the two first longitudinal slide rails, and a threaded hole matching the first longitudinal lead screw is provided on the bottom plate of the first transverse slide; two first transverse slide rails are symmetrically arranged on the first transverse slide, and a first transverse lead screw is rotatably arranged between the two first transverse slide rails, one end of the first transverse lead screw extends to the outside of the first transverse slide and is provided with a second operating wheel; the mounting frame is slidably arranged on the two first transverse slide rails, and a threaded hole matching the first transverse lead screw is provided on the bottom plate of the mounting frame.

3. The automatic polishing device for handle accessories according to claim 2, characterized in that: The workbench is fixedly provided with a second transverse slide at a position adjacent to the adjusting groove, and two second transverse slides are symmetrically provided on the second transverse slide, and a second transverse lead screw is rotatably provided in the middle of the two second transverse slides, one end of the second transverse lead screw extends to the outside of the second transverse slide and is provided with a third operating wheel; a second longitudinal slide is slidably provided on the two second transverse slides, and a threaded hole matching the second transverse lead screw is provided on the bottom plate of the second longitudinal slide; two second longitudinal slides are symmetrically provided on the second longitudinal slide, and a second longitudinal lead screw is rotatably provided in the middle of the two second longitudinal slides, one end of the second longitudinal lead screw extends to the outside of the second longitudinal slide and is provided with a fourth operating wheel; the mounting platform is slidably provided on the two second longitudinal slides and a threaded hole matching the second longitudinal lead screw is provided on its lower half.

4. The automatic polishing device for handle accessories according to claim 3, characterized in that: The workbench is fixedly provided with a third longitudinal slide at a position opposite to the adjusting groove, and two third longitudinal slide rails are symmetrically provided on the third longitudinal slide, and a third longitudinal lead screw is rotatably provided between the two third longitudinal slide rails, one end of the third longitudinal lead screw extends to the outside of the third longitudinal slide and is provided with a fifth operating wheel; a third transverse slide is slidably provided on the two third longitudinal slide rails, and a threaded hole matching the third longitudinal lead screw is provided on the bottom plate of the third transverse slide; two third transverse slide rails are symmetrically provided on the third transverse slide, and a third transverse lead screw is rotatably provided between the two third transverse slide rails, and one end of the third transverse lead screw extends to the outside of the third transverse slide and is provided with a sixth operating wheel; the mounting plate is slidably provided on the two third transverse slide rails, and a threaded hole matching the third transverse lead screw is provided in the middle portion of the mounting plate.

5. The automatic polishing device for handle accessories according to claim 1, characterized in that: The upper end of the mounting seat is provided with a mounting head for sleeve-connecting the handle accessories.

6. The automatic polishing device for handle accessories according to claim 1, characterized in that: The lower end of each mounting seat is located between the workbench and the turntable and is provided with a driven wheel. The driving shaft of the fifth motor is connected to the input end of the fifth reducer. The output end of the fifth reducer extends to above the workbench and is provided with a driving wheel. A transmission belt is sleeved between the plurality of driven wheels and the driving wheel, and at least one driven wheel near the driving wheel is not in contact with the transmission belt.

7. The automatic polishing device for handle accessories according to claim 6, characterized in that : The workbench is provided with a protective cover on the outer side of the turntable.

8. The automatic polishing device for handle accessories according to claim 7, characterized in that: The protective cover is provided with an arc-shaped contact piece in the area where the mounting seat corresponding to the driven wheel is not in contact with the transmission belt, and a contact switch for contact induction with the arc-shaped contact piece is provided on the turntable near each mounting seat.

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