Multi-station automatic polishing system

Abstract

The invention relates to the field of part machining equipment, in particular to a multi-station automatic grinding system which comprises a grinding room, a bearing platform and a grinding robot, the bearing platform and the grinding robot are arranged in the grinding room, a plurality of vertical dust removal pipes are arranged in the grinding room in the circumferential direction relative to the bearing platform, and dust removal holes are densely distributed in the dust removal pipes; the top ends of the dust removal pipes communicate with a dust suction device placed outside the sanding room through hoses, and a driving assembly used for driving the dust removal pipes to be close to or away from the bearing platform is further arranged on the sanding room. Partition plates dividing an inner cavity of the polishing room into a plurality of polishing cavities and displacement cavities are arranged in the polishing room, the multiple polishing cavities communicate with the displacement cavities, the bearing platforms are arranged in the polishing cavities correspondingly, the polishing robots are located in the displacement cavities, and displacement devices used for driving the polishing robots to move to the communicating positions of the polishing cavities and the displacement cavities are arranged in the displacement cavities. The automatic polishing device has the advantages of multi-station automatic polishing, high intelligent degree, high polishing efficiency, high dust removal effect and the like.

Description

Technical Field

[0001] The present application relates to the field of parts processing equipment, and in particular to a multi-station automatic grinding system. Background Art

[0002] In the fields of manufacturing, automobile repair, furniture making, etc., grinding rooms are often used to grind the surface of objects made of metal, wood, plastic and other materials to remove surface defects, unevenness or coatings, so as to improve product quality, increase aesthetics or prepare for subsequent processing.

[0003] The related art discloses an automobile parts grinding system, which includes a grinding room with an opening on one side and a rolling door arranged at the opening, a grinding robot and a grinding platform arranged in the grinding room, and an automatic parts transportation device usually using a handling robot. A dust collection device is also arranged outside the grinding room, and the dust collection device is connected to the top of the grinding room through a dust collection pipe.

[0004] A large amount of dust will be generated during the grinding process and will spread throughout the entire grinding room. However, the farther the dust is from the connection point between the vacuum pipe and the grinding room, the worse the dust removal effect will be. As a result, more dust may accumulate in some parts of the grinding room, which is an obvious deficiency. Summary of the invention

[0005] In order to improve the dust removal effect in the grinding room, the present application provides a multi-station automatic grinding system.

[0006] The multi-station automatic grinding system provided in this application adopts the following technical solution: A multi-station automatic grinding system comprises a grinding room, a base arranged in the grinding room and a grinding robot, wherein a plurality of vertical dust removal pipes are arranged in the grinding room in a circumferential direction relative to the base, the dust removal pipes are densely covered with dust removal holes, the top ends of the dust removal pipes are connected to a dust suction device placed outside the grinding room through hoses, and the grinding room is also provided with a driving assembly for driving each dust removal pipe to approach or move away from the base.

[0007] By adopting the above technical solution, the dust removal pipe is arranged vertically, covering the vast height range of the grinding room, which can improve the dust removal effect in three dimensions. At the same time, the driving component drives the dust removal pipe to approach or move away from the base, thereby further eliminating the dust removal blind area in the grinding room and improving the dust removal effect.

[0008] Optionally, the grinding room is provided with a partition that divides its inner cavity into multiple grinding chambers and displacement chambers, the multiple grinding chambers are connected with the displacement chamber, one support platform is provided in each grinding chamber, the grinding robot is located in the displacement chamber, and a displacement device is provided in the displacement chamber for driving the grinding robot to move to the connecting point of the grinding chamber and the displacement chamber.

[0009] By adopting the above technical solution, the partition separates the grinding chamber into multiple grinding processing stations, and cooperates with the grinding robot to automatically grind the workpiece, thereby realizing automated and intelligent grinding and improving the grinding efficiency.

[0010] Optionally, a dust collecting bucket with a hollow interior and an open top is placed in the dust collecting tube, and a pressure ring is tightly and slidably fitted on the inner wall of the dust collecting tube. The pressure ring is higher than the dust collecting hole and is pressed against the opening on the top of the dust collecting tube. A filter cloth is arranged in the pressure ring, and a plurality of reversing rings are circumferentially arranged on the inner wall of the dust collecting tube relative to the position above the pressure ring. The pressure ring is fastened with a pull wire corresponding to each reversing ring, and each pull wire passes through the corresponding reversing ring and is jointly fastened with an umbrella-shaped pull cover.

[0011] By adopting the above technical solution, when the dust collection device starts to collect dust, negative pressure is first formed in the dust collection tube relative to the position above the pressure ring, so that the pressure ring is forced to move upward and separate from the opening at the top of the dust collection bucket. At this time, the air is sucked out of the dust collection tube, and the dust is intercepted on the filter cloth. Since the pull cover will hinder the flow of dust-removed air in the dust collection tube, the air blows on it to keep the pressure ring suspended, so that the filter cloth continues to filter dust. After the dust collection is completed, the pressure ring automatically falls down and is pressed against the top of the dust collection bucket, and the dust on the filter cloth automatically falls into the dust collection bucket.

[0012] Optionally, a fixed ring is arranged inside the dust removal tube at a position between the reversing ring and the pressure ring, and a return compression spring is supported between the fixed ring and the pressure ring.

[0013] By adopting the above technical solution, the deformation force of the reset compression spring can push the pressure ring to fall and reset after the dust collection is completed, thereby reducing the possibility of inaccurate reset position of the pressure ring.

[0014] Optionally, the dust removal pipe is open relative to the dust collecting bucket and a sealing plate is hinged at the opening, and a magnetic strip for magnetic attraction with the dust removal pipe is arranged on the sealing plate.

[0015] By adopting the above technical solution, workers can rotate the sealing plate to take out the dust collecting bucket and clean the dust inside it.

[0016] Optionally, the drive assembly includes a drive motor arranged on the grinding room and electrically connected to the control system, and a turntable coaxially connected to the output shaft of the drive motor. A slide rail arranged in the direction away from the platform is also arranged in the grinding room. A slider slidingly matched with the slide rail is arranged at the end of the dust removal pipe. A positioning compression spring is supported between the side of the slider facing away from the platform and the end of the slide rail. Each dust removal pipe is provided with a pull rope passing through the grinding room and connected to the turntable.

[0017] By adopting the above technical solution, the control system starts the drive motor, and the output shaft of the drive motor drives the turntable to rotate forward. The turntable applies a pulling force to the dust removal pipe through the pull rope, so that the dust removal pipe gradually moves away from the support. Conversely, when the output shaft of the drive motor drives the turntable to rotate in the opposite direction, the adjustment compression spring gradually pushes the dust removal pipe closer to the support.

[0018] Optionally, a vertical rotating shaft is provided in the grinding room, the slide rail is connected to the rotating shaft, the turntable includes an inner plate and an outer plate rotatably mounted outside the inner plate, the pull rope is tied to the outer plate, a protrusion is arranged on the circumferential outer wall of the outer plate, a limiting rod for supporting the protrusion is arranged on the top of the grinding room, when the protrusion supports the limiting rod, the distance between the dust removal pipe and the base is minimized, and a transmission component for transmitting the rotation of the inner plate to the rotating shaft is also arranged on the top of the grinding room.

[0019] By adopting the above technical solution, when the dust removal pipe gradually moves away from the base, the inner disc drives the outer disc to rotate synchronously through friction. Conversely, when the dust removal pipe gradually approaches the base, the inner disc drives the outer disc to rotate through friction until the protrusion hits the limit rod. After that, the inner disc continues to rotate, while the outer disc remains stationary. At this time, the transmission component transmits the rotation of the inner disc to the shaft, and the shaft drives the dust removal pipe to rotate, thereby further expanding the dust removal range of the dust removal pipe and improving the dust removal and dust suppression effect of the grinding room.

[0020] Optionally, the transmission assembly includes a transmission shaft rotatably mounted on the top of the grinding room, two spaced incomplete bevel gears are arranged on the transmission shaft, a driven complete bevel gear is arranged on the top of the rotating shaft and is located between the two spaced incomplete bevel gears and meshed with them, an active complete bevel gear is also coaxially arranged on the output shaft of the drive motor, and a transmission complete bevel gear meshed with the active complete bevel gear is also arranged on the transmission shaft.

[0021] By adopting the above technical solution, the output shaft of the driving motor drives the active complete bevel gear to rotate, and the active complete bevel gear drives the transmission shaft to rotate through the transmission complete bevel gear, and the two spaced incomplete bevel gears on the transmission shaft alternately mesh with the driven complete bevel gear, so that the rotating shaft drives the dust removal pipe to reciprocate, which is beneficial to improve the utilization rate of the space in the grinding room.

[0022] In summary, the present application includes at least one of the following beneficial technical effects: 1. Due to the vertical layout of the dust removal pipe, which covers the vast height range of the grinding room, the dust removal effect can be improved from a three-dimensional perspective. At the same time, the drive component drives the dust removal pipe to move closer to or away from the base, thereby further eliminating the dust removal blind area in the grinding room and improving the dust removal effect; 2. When the dust collecting device starts to collect dust, negative pressure is first formed in the dust collecting pipe relative to the position above the pressure ring, so that the pressure ring is forced to move upward and separate from the opening at the top of the dust collecting bucket. At this time, the air is sucked out by the dust collecting pipe, and the dust is intercepted on the filter cloth. Since the pull cover will hinder the flow of dust-removed air in the dust collecting pipe, the air blows on it to keep the pressure ring suspended, so that the filter cloth continues to filter dust; 3. When the dust removal pipe gradually moves away from the base, the inner disc drives the outer disc to rotate synchronously through friction. Conversely, when the dust removal pipe gradually approaches the base, the inner disc drives the outer disc to rotate through friction until the protrusion hits the limit rod. After that, the inner disc continues to rotate while the outer disc remains stationary. At this time, the transmission component transmits the rotation of the inner disc to the shaft, and the shaft drives the dust removal pipe to rotate, thereby further expanding the dust removal range of the dust removal pipe and improving the dust removal and dust suppression effects of the grinding room; 4. The output shaft of the driving motor drives the active complete bevel gear to rotate, and the active complete bevel gear drives the transmission shaft to rotate through the transmission complete bevel gear, and the two spaced incomplete bevel gears on the transmission shaft alternately mesh with the driven complete bevel gear, so that the shaft drives the dust removal pipe to reciprocate, which is beneficial to improve the utilization rate of the space in the grinding room. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of an embodiment of the present application.

[0024] Figure 2 It is a cross-sectional view of the positional relationship between the partition, the support platform and the grinding robot in the embodiment of the present application.

[0025] Figure 3 It is a cross-sectional view showing the positional relationship among the driving motor, the rotating shaft and the rotating disk in the embodiment of the present application.

[0026] Figure 4 yes Figure 3 Enlarged view of part A.

[0027] Explanation of the accompanying drawings: 1. Grinding room; 2. Base; 3. Grinding robot; 4. Dust removal pipe; 401. Dust removal hole; 5. Dust suction device; 6. Partition; 7. Grinding chamber; 8. Displacement chamber; 9. Dust collecting bucket; 10. Pressing ring; 11. Filter cloth; 12. Reversing ring; 13. Pull wire; 14. Pull cover; 15. Fixed ring; 16. Reset spring; 17. Driving motor; 18. Slide rail; 19. Sliding block; 20. Adjusting spring; 21. Pull rope; 22. Rotating shaft; 231. Outer disk; 232. Inner disk; 24. Bump; 25. Limit rod; 26. Transmission shaft; 27. Interval incomplete bevel gear; 28. Driven complete bevel gear; 29. ​​Active complete bevel gear; 30. Transmission complete bevel gear. DETAILED DESCRIPTION

[0028] The following is combined with Figure 1-4 This application is described in further detail.

[0029] The embodiment of the present application discloses a multi-station automatic grinding system.

[0030] Reference Figure 1 and Figure 2 The multi-station automatic grinding system includes a grinding room 1 and a partition 6 arranged in the grinding room 1. The partition 6 divides the inner cavity of the grinding room 1 into a plurality of grinding cavities 7 and a displacement cavity 8. The displacement cavity 8 is communicated with each grinding cavity 7.

[0031] Reference Figure 1 and Figure 2 A support 2 is arranged in each grinding chamber 7, and the support 2 can be close to or away from the connection between the grinding chamber 7 and the displacement chamber 8. A grinding robot 3 and a displacement device (not shown in the figure) for driving the grinding robot 3 are arranged in the displacement chamber 8, and the position device directly adopts the existing technology.

[0032] The displacement device drives the grinding robot 3 to move to the connection point between each grinding cavity 7 and the shift cavity, so that the grinding robot 3 can alternately grind the workpieces on different platforms 2, saving the waiting time for loading and unloading the workpieces. The grinding process does not require human intervention, realizing automated and intelligent grinding, and improving grinding efficiency.

[0033] Reference Figure 2 , Figure 3 and Figure 4 In each grinding chamber 7, a plurality of vertical dust removal pipes 4 are arranged circumferentially around the corresponding base 2. The dust removal pipes 4 are densely covered with dust removal holes 401. The top of the extraction pipe is connected to a dust suction device 5 placed outside the grinding room 1. The dust suction device 5 directly adopts existing technology, such as a dust suction pump.

[0034] Reference Figure 2 , Figure 3 and Figure 4 , start the dust suction device 5, the dust-containing air in the polishing room 1 is sucked into the dust removal pipe 4 through the dust removal hole 401, and then discharged to the outside through the hose and the dust suction device 5.

[0035] Reference Figure 2 , Figure 3 and Figure 4 A dust collecting bucket 9 with a hollow interior and an open top is placed at the bottom of each dust collecting pipe 4. The dust collecting pipe 4 is open relative to the dust collecting bucket 9 and a sealing plate (not shown in the figure) is hinged at the opening. A magnetic strip (not shown in the figure) is bonded to the sealing plate for magnetic attraction with the dust collecting pipe 4.

[0036] Reference Figure 2 , Figure 3 and Figure 4The inner wall of the dust removal pipe 4 is tightly attached and vertically slidably matched with a pressing ring 10, the pressing ring 10 is higher than the dust removal hole 401 and is pressed tightly against the opening at the top of the dust collecting bucket 9, and a filter cloth 11 is bonded inside the pressing ring 10.

[0037] A plurality of reversing rings 12 are welded circumferentially on the inner wall of the dust removal pipe 4 relative to the position above the pressure ring 10. The pressure ring 10 is provided with a pull wire 13 corresponding to each reversing ring 12. Each pull wire 13 passes through the corresponding reversing ring 12 and is jointly connected with an umbrella-shaped pull cover 14.

[0038] A fixing ring 15 is integrally formed inside the dust removal pipe 4 at a position between the reversing ring 12 and the pressing ring 10 , and a return compression spring 16 is supported at a position between the fixing ring 15 and the pressing ring 10 .

[0039] Reference Figure 2 , Figure 3 and Figure 4 The control system starts the dust suction device 5, and the dust suction device 5 draws out the air in the hose. A negative pressure is first formed in the dust removal pipe 4 relative to the position above the pressure ring 10, so that the pressure ring 10 is forced to move upward and separate from the opening at the top of the dust collecting bucket 9.

[0040] At this time, the air is sucked above the pressure ring 10, and the dust is brought to the filter cloth 11. Since the pull cover 14 will hinder the discharge of the dust-removed air in the dust removal pipe 4, the air blows on it to keep the pressure ring 10 suspended, so that the filter cloth 11 can continue to filter the dust.

[0041] Reference Figure 2 , Figure 3 and Figure 4 When the dust collecting device 5 is stopped, the pulling effect of the pull cover 14 on the compression spring disappears, and the deformation force of the reset compression spring 16 pushes the pressure ring 10 downward to reset. The pressure ring 10 is pressed tightly into the dust collecting bucket 9 again, and the dust on the filter cloth 11 automatically falls into the dust collecting bucket 9.

[0042] Reference Figure 2 , Figure 3 and Figure 4 A driving assembly for driving each dust removal pipe 4 to move closer to or away from the base 2 is also arranged in the grinding room 1. The driving assembly includes a driving motor 17 bolted to the top of the grinding room 1 and electrically connected to the control system, and a turntable coaxially connected to the output shaft of the driving motor 17. The driving motor 17 adopts a forward and reverse servo motor in the prior art.

[0043] Reference Figure 2 , Figure 3 and Figure 4A slide rail 18 is also arranged in the grinding room 1 and is arranged in a direction away from the base 2. A slider 19 that slides with the slide rail 18 is bolted to the bottom end of the dust removal pipe 4. A positioning compression spring 20 is supported between the side of the slider 19 that faces away from the base 2 and the end of the slide rail 18. Each dust removal pipe 4 is tied with a pull rope 21 that slides out of the grinding room 1 and is connected to the turntable.

[0044] Reference Figure 2 , Figure 3 and Figure 4 The turntable includes an inner disk 232 and an outer disk 231 rotatably sleeved on the inner disk 232, and the pull rope 21 is tied to the outer disk 231. A convex block 24 is integrally formed on the outer circumferential wall of the outer disk 231, and a limiting rod 25 for supporting the convex block 24 is threadedly connected to the top of the grinding room 1.

[0045] Reference Figure 2 , Figure 3 and Figure 4 A plurality of vertical rotating shafts 22 are rotatably mounted in each grinding chamber 7, one rotating shaft 22 corresponds to one dust removal pipe 4, and the slide rail 18 is bolted to the corresponding rotating shaft 22. A transmission assembly for transmitting the rotation of the inner disk 232 to the rotating shaft 22 is also arranged on the top of the grinding room 1.

[0046] Reference Figure 2 , Figure 3 and Figure 4 The transmission assembly includes a transmission shaft 26 rotatably mounted on the top of the grinding room 1, and two spaced incomplete bevel gears 27 are fixedly sleeved on the transmission shaft 26. The top end of the rotating shaft 22 rotates through the grinding room 1 and is fixedly sleeved with a driven complete bevel gear 28. The driven complete bevel gear 28 is located between the two spaced incomplete bevel gears 27 and meshes with them.

[0047] Reference Figure 2 , Figure 3 and Figure 4 A driving full bevel gear 29 is coaxially arranged on the output shaft of the driving motor 17 , and a transmission full bevel gear 30 meshing with the driving full bevel gear 29 is fixedly sleeved on the transmission shaft 26 .

[0048] Reference Figure 2 , Figure 3 and Figure 4 The output shaft of the driving motor 17 drives the inner disk 232 to rotate forward, and the inner disk 232 drives the outer disk 231 to rotate forward synchronously through friction. The outer disk 231 applies a pulling force to the dust removal pipe 4 through the pull rope 21, and the dust removal pipe 4 gradually moves away from the base 2.

[0049] On the contrary, when the output shaft of the driving motor 17 drives the inner disk 232 to reverse, the inner disk 232 drives the outer disk 231 to reverse synchronously through friction, and the adjustment compression spring 20 pushes the dust removal pipe 4 gradually close to the base 2 until the protrusion 24 contacts the corresponding limit rod 25.

[0050] When the inner disk 232 continues to rotate in the opposite direction, the outer disk 231 remains stationary. At this time, the output shaft of the driving motor 17 drives the active complete bevel gear 29 to rotate, and the active complete bevel gear 29 drives the transmission shaft 26 to rotate through the transmission complete bevel gear 30. The two spaced incomplete bevel gears 27 on the transmission shaft 26 are alternately meshed with the driven complete bevel gear 28, so that the rotating shaft 22 drives the dust removal pipe 4 to reciprocate in a fan-shaped cycle.

[0051] The implementation principle of a multi-station automatic grinding system in an embodiment of the present application is: the control system starts the dust suction device 5, the dust suction device 5 draws out the air in the hose, and a negative pressure is first formed in the dust removal pipe 4 relative to the position above the pressure ring 10, so that the pressure ring 10 is forced to move upward and separate from the opening at the top of the dust collecting bucket 9.

[0052] At this time, the air is sucked above the pressing ring 10, and the dust is brought to the filter cloth 11. Since the pull cover 14 will hinder the discharge of the dust-removed air in the dust removal pipe 4, the air blows against it so that the pressing ring 10 remains suspended.

[0053] When the dust collecting device 5 is stopped, the pulling effect of the pull cover 14 on the compression spring disappears, and the deformation force of the reset compression spring 16 pushes the pressure ring 10 downward to reset. The pressure ring 10 is pressed tightly into the dust collecting bucket 9 again, and the dust on the filter cloth 11 automatically falls into the dust collecting bucket 9.

[0054] During the vacuuming process, the control system can start the drive motor 17, and the output shaft of the drive motor 17 drives the inner disk 232 to rotate forward. The inner disk 232 drives the outer disk 231 to rotate forward synchronously through friction. The outer disk 231 applies a pulling force to the dust removal pipe 4 through the pull rope 21, and the dust removal pipe 4 gradually moves away from the base 2.

[0055] On the contrary, when the output shaft of the driving motor 17 drives the inner disk 232 to reverse, the inner disk 232 drives the outer disk 231 to reverse synchronously through friction, and the adjustment compression spring 20 pushes the dust removal pipe 4 gradually close to the base 2 until the protrusion 24 contacts the corresponding limit rod 25.

[0056] When the inner disk 232 continues to rotate in the opposite direction, the outer disk 231 remains stationary. At this time, the output shaft of the driving motor 17 drives the active complete bevel gear 29 to rotate, and the active complete bevel gear 29 drives the transmission shaft 26 to rotate through the transmission complete bevel gear 30. The two spaced incomplete bevel gears 27 on the transmission shaft 26 are alternately meshed with the driven complete bevel gear 28, so that the rotating shaft 22 drives the dust removal pipe 4 to reciprocate in a fan-shaped cycle.

[0057] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A multi-station automatic grinding system, comprising a grinding room (1), a support platform (2) arranged in the grinding room (1) and a grinding robot (3), characterized in that: A plurality of vertical dust removal pipes (4) are arranged in the grinding room (1) in a circumferential direction relative to the support platform (2); the dust removal pipes (4) are densely covered with dust removal holes (401); the top ends of the dust removal pipes (4) are connected to a dust suction device (5) placed outside the grinding room (1) via a hose; and a driving assembly for driving each dust removal pipe (4) to move closer to or away from the support platform (2) is also arranged on the grinding room (1).

2. The multi-station automatic grinding system according to claim 1, characterized in that: The grinding room (1) is provided with a partition (6) for dividing its inner cavity into a plurality of grinding cavities (7) and a displacement cavity; the plurality of grinding cavities (7) are in communication with the displacement cavity (8); one support platform (2) is provided in each grinding cavity (7); the grinding robot (3) is located in the displacement cavity (8); and a displacement device for driving the grinding robot (3) to move to a position where the grinding cavity (7) and the displacement cavity are in communication is provided in the displacement cavity (8).

3. The multi-station automatic grinding system according to claim 1, characterized in that: A dust collecting bucket (9) which is hollow inside and open at the top is placed in the dust collecting pipe (4); a pressure ring (10) is tightly and slidably fitted on the inner wall of the dust collecting pipe (4); the pressure ring (10) is higher than the dust collecting hole (401) and is pressed tightly against the opening at the top of the dust collecting bucket (9); a filter cloth (11) is arranged in the pressure ring (10); a plurality of reversing rings (12) are circumferentially arranged on the inner wall of the dust collecting pipe (4) relative to the position above the pressure ring (10); a pull wire (13) corresponding to each reversing ring (12) is tied to the pressure ring (10); each pull wire (13) passes through the corresponding reversing ring (12) and is tied together with an umbrella-shaped pull cover (14).

4. The multi-station automatic grinding system according to claim 3 is characterized in that: A fixing ring (15) is arranged inside the dust removal pipe (4) at a position between the reversing ring (12) and the pressure ring (10), and a return compression spring (16) is supported between the fixing ring (15) and the pressure ring (10).

5. The multi-station automatic grinding system according to claim 3, characterized in that: The dust removal pipe (4) is open at a position relative to the dust collecting bucket (9) and a sealing plate is hinged at the opening, and a magnetic strip for magnetically attracting the dust removal pipe (4) is arranged on the sealing plate.

6. The multi-station automatic grinding system according to claim 1, characterized in that: The drive assembly comprises a drive motor (17) arranged on the grinding room (1) and electrically connected to the control system, and a turntable coaxially connected to the output shaft of the drive motor (17); a slide rail (18) arranged in a direction away from the support platform (2) is also arranged in the grinding room (1); a slider (19) slidably matched with the slide rail (18) is arranged at the end of the dust removal pipe (4); a position adjustment compression spring (20) is supported between the side of the slider (19) facing away from the support platform (2) and the end of the slide rail (18); and each dust removal pipe (4) is provided with a pull rope (21) passing through the grinding room (1) and connected to the turntable.

7. The multi-station automatic grinding system according to claim 6, characterized in that: A rotating frame is provided in the grinding room (1) with a vertical rotating shaft (22); the slide rail (18) is connected to the rotating shaft (22); the rotating disk comprises an inner disk (232) and an outer disk (231) rotatably sleeved outside the inner disk (232); the pull rope (21) is tied to the outer disk (231); a protrusion (24) is arranged on the circumferential outer wall of the outer disk (231); a limiting rod (25) is arranged on the top of the grinding room (1) for the protrusion (24) to support; when the protrusion (24) supports the limiting rod (25), the distance between the dust removal pipe (4) and the support platform (2) is minimized; and a transmission component for transmitting the rotation of the inner disk (232) to the rotating shaft (22) is also arranged on the top of the grinding room (1).

8. The multi-station automatic grinding system according to claim 7, characterized in that: The transmission assembly comprises a transmission shaft (26) rotatably mounted on the top of the grinding room (1), two spaced incomplete bevel gears (27) are arranged on the transmission shaft (26), a driven complete bevel gear (28) located between the two spaced incomplete bevel gears (27) and meshing with the driven complete bevel gears (28) is arranged on the top of the rotating shaft (22), a driving complete bevel gear (29) is coaxially arranged on the output shaft of the driving motor (17), and a driving complete bevel gear (30) meshing with the driving complete bevel gear (29) is also arranged on the transmission shaft (26).

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