A double-sided polishing apparatus

Abstract

The application discloses a double-sided polishing equipment, relates to the field of polishing equipment, and comprises a machine body, a polishing table is installed on the machine body, a placing disc is placed on the polishing table, a valve plate is installed on the placing disc, a polishing head is slidably arranged above the polishing table, the polishing head abuts against the valve plate through sliding, a rotating mechanism is arranged between the placing disc and the polishing table, the rotating mechanism comprises a rotating table, an outer gear ring, a driving roller and a guide roller, feeding ports and discharging ports are arranged on opposite sides of the polishing table, the guide roller is slidably arranged on the polishing table at the feeding ports and the discharging ports, the feeding ports and the discharging ports are opened by sliding the guide roller into the polishing table, an electric cylinder is arranged on one side of the rotating table facing the discharging port, an inlet conveying belt is arranged on the machine body at the feeding port, and an outlet conveying belt is arranged on the machine body at the discharging port. The application has the effect of improving the machining efficiency of the valve plate.

Description

Technical Field

[0001] This application relates to the field of grinding equipment, and more particularly to a double-sided grinding equipment. Background Technology

[0002] As a core component of a vacuum pump, the valve plate has a precise rectangular structure. The dimensional accuracy of the valve plate, especially its length, directly determines the sealing performance and overall performance of the vacuum pump. Therefore, each valve plate must undergo rigorous dimensional inspection before leaving the factory. During the production process, the valve plate needs to be ground using grinding equipment to ensure its precision.

[0003] Existing grinding equipment (such as) Figure 1 (As shown), the machine includes a body 1, on which a grinding table 2 is mounted. A tray 3 is placed on the grinding table 2, and a valve plate 4 is mounted on the tray 3. A grinding head 5 is slidably disposed above the grinding table 2, and the grinding head 5 abuts against the valve plate 4 by sliding. A rotating mechanism 6 is disposed between the tray 3 and the grinding table 2. The rotating mechanism 6 includes a rotating table 61, an external gear ring 62, a drive roller 63, and a guide roller 64. The rotating table 61 is rotatably disposed at the center of the grinding table 2, and the external gear ring 62 is sleeved on the tray 3. Outside the storage tray 3, the drive roller 63 is evenly arranged in a circle around the rotating table 61, and the guide roller 64 is evenly arranged in a circle around the grinding table 2. The outer toothed ring 62 meshes with the drive roller 63 and the guide roller 64. When the grinding head 5 abuts against the valve plate 4, the rotating table 61 rotates and drives the drive roller 63. The drive roller 63 drives the outer toothed ring 62, thereby driving the storage tray 3, so that the valve plate 4 rotates and rubs against the grinding head 5 for grinding. The existing grinding equipment requires manual placement and removal of the storage tray 3, which results in low processing efficiency. Summary of the Invention

[0004] To improve the processing efficiency of valve plates, this application provides a double-sided grinding device.

[0005] The double-sided grinding equipment provided in this application adopts the following technical solution: A double-sided grinding device includes a machine body with a grinding table mounted on it. A storage tray is placed on the grinding table, and a valve plate is mounted on the storage tray. A grinding head is slidably disposed above the grinding table and abuts against the valve plate. A rotating mechanism is provided between the storage tray and the grinding table. The rotating mechanism includes a rotating table, an external gear ring, a drive roller, and a guide roller. The rotating table is rotatably disposed at the center of the grinding table. The external gear ring is sleeved on the outside of the storage tray. The drive roller is evenly disposed in a circle around the circumference of the rotating table, and the guide roller is evenly disposed in a circle around the circumference of the grinding table. The external gear ring meshes with the drive roller and the guide roller. A feed inlet and a discharge outlet are respectively provided on opposite sides of the grinding table. The guide roller is slidably disposed on the grinding table at the feed inlet and the discharge outlet, and opens the feed inlet and the discharge outlet by sliding and retracting into the grinding table. An electric cylinder is provided on the side of the rotating table facing the discharge outlet. An inlet conveyor belt is provided on the machine body at the feed inlet, and an outlet conveyor belt is provided on the machine body at the discharge outlet.

[0006] By adopting the above technical solution, the discharge port and the feed port are opened by the sliding of the guide roller, and the grinding completed valve plate is pushed to the discharge conveyor belt by the electric cylinder pushing the placement plate. Then, it is carried away from the grinding table by the conveyor belt. The placement plate with the un-grinded material is sent into the grinding table by the feed conveyor belt, thereby realizing automated loading and unloading and improving the processing efficiency of valve plate.

[0007] Preferably, the grinding table is provided with two sliders, which are respectively located at the feed inlet and the discharge outlet. The guide rollers located at the feed inlet and the discharge outlet are both mounted on the sliders.

[0008] By adopting the above technical solution, the slider can simultaneously drive the guide rollers that slide at the feed inlet or the discharge outlet, thus facilitating synchronous driving.

[0009] Preferably, the rotating table includes an inner lifting part and an outer rotating part. The lifting part is installed on the grinding table and moves up and down on the grinding table. The rotating part is rotatably disposed on the grinding table and is sleeved outside the lifting part. The drive roller is fixed around the rotating part. The electric cylinder is installed on the lifting part.

[0010] By adopting the above technical solution, the rotating part of the outer ring drives the drive roller to rotate, thereby driving the placement tray. The electric cylinder installed on the lifting part can reduce the probability of the electric cylinder being pressed by the grinding head during grinding by lowering it, thereby reducing the probability of the electric cylinder being damaged by the grinding head. After grinding is completed, the electric cylinder is raised so that the electric cylinder can normally drive the placement tray to detach from the grinding table.

[0011] Preferably, a sliding platform is slidably provided on the machine body, and the feed conveyor belt and the discharge conveyor belt are both driven on the sliding platform. The sliding platform carries the feed conveyor belt and the discharge conveyor belt to slide towards or away from the grinding table.

[0012] By adopting the above technical solution, the sliding table can drive the discharge conveyor belt and the feed conveyor belt away from the grinding table when the machine body is grinding, thereby reducing the impact of the feed conveyor belt and the discharge conveyor belt on grinding and reducing the probability of damage caused by mechanical collision.

[0013] Preferably, a linkage mechanism is provided between the slider and the sliding table. The linkage mechanism includes a drive spring, a linkage inclined surface, and a linkage rod. The drive spring is disposed between the slider and the grinding table. The elastic force of the drive spring drives the slider to slide and cause the guide roller to extend out of the grinding table. The linkage inclined surface is formed on the slider. The linkage rod is fixed on the sliding table. The sliding table slides toward the grinding table. The linkage rod abuts against the linkage inclined surface to drive the slider to slide and cause the guide roller to be housed in the grinding table.

[0014] By adopting the above technical solution, the linkage mechanism can drive the sliding guide roller to open the feed port and the discharge port while the sliding table drives the feed conveyor belt and the discharge conveyor belt to connect with the grinding disc.

[0015] Preferably, the feeding conveyor belt is provided with a feeding box, and the feeding box is fixed with positioning teeth circumferentially corresponding to the outer toothed ring.

[0016] By adopting the above technical solution, the feed box is used to store the tray to be processed. The positioning teeth of the corresponding outer gear ring can position the tray, so that when the tray enters the grinding disc, it can directly mesh with the drive roller without adjustment.

[0017] Preferably, the surface of the feed conveyor belt is uniformly provided with a layer of anti-slip protrusions.

[0018] By adopting the above technical solution, the anti-slip protrusions can reduce the probability of the tray slipping or deflecting during transmission.

[0019] Preferably, the grinding head includes a drive platform, an upper grinding block, and a cover. The drive platform is slidably disposed on the machine body. The upper grinding block is installed on the side of the drive platform facing the grinding platform. The cover covers the upper grinding block. When the upper grinding block abuts against the valve plate, the cover covers the grinding platform.

[0020] By adopting the above technical solution, the cover can block the waste chips that fly during grinding, thus reducing the environmental pollution caused by the waste chips.

[0021] Preferably, a lower grinding block is mounted on the grinding table.

[0022] By adopting the above technical solution, the lower grinding block, in conjunction with the upper grinding block, can grind both sides of the valve plate simultaneously, thereby improving processing efficiency.

[0023] Preferably, a liquid-passing pipe is installed on the drive platform, and a liquid-draining pipe is installed on the grinding platform.

[0024] By adopting the above technical solution, the liquid-passing pipe can deliver the grinding liquid into the upper and lower grinding blocks, thereby assisting in grinding and improving the grinding effect. The liquid-draining pipe can discharge the grinding liquid along with the grinding debris after grinding is completed.

[0025] In summary, this application includes at least one of the following beneficial technical effects: 1. The discharge port and feed port are opened by sliding guide rollers. The grinding completed valve plate is pushed to the discharge conveyor belt by the electric cylinder pushing the placement plate, and then carried away from the grinding table by the conveyor belt. The placement plate with the un-grinded material is sent into the grinding table by the feed conveyor belt, thereby realizing automated loading and unloading and improving the processing efficiency of valve plate. 2. The slider can simultaneously drive the guide rollers that slide at the feed inlet or the discharge outlet, thus facilitating synchronous driving; 3. The outer ring rotating part drives the drive roller to rotate, thereby driving the placement tray. The electric cylinder is installed in the lifting part, which can reduce the probability of the electric cylinder being pressed by the grinding head during grinding by lowering it, thereby reducing the probability of the electric cylinder being damaged by the grinding head. After grinding is completed, the electric cylinder is raised so that the electric cylinder can normally drive the placement tray to get off the grinding table. 4. The outer ring rotating part drives the drive roller to rotate, thereby driving the placement tray. The electric cylinder is installed in the lifting part, which can reduce the probability of the electric cylinder being pressed by the grinding head during grinding by lowering it, thereby reducing the probability of the electric cylinder being damaged by the grinding head. After grinding is completed, the electric cylinder is raised so that the electric cylinder can drive the placement tray to get off the grinding table normally. 5. The linkage mechanism can drive the sliding guide roller to open the feed inlet and discharge outlet while the sliding table drives the feed conveyor belt and discharge conveyor belt to connect with the grinding disc; 6. The feed box is used to store the tray to be processed. The positioning teeth of the corresponding outer gear ring can position the tray, so that when the tray enters the grinding disc, it can directly mesh with the drive roller without adjustment; the anti-slip protrusions can reduce the probability of the tray slipping or deflecting during the transmission process. 7. The cover can block the waste chips that fly during grinding, reducing the environmental pollution caused by the waste chips. The lower grinding block and the upper grinding block can grind both sides of the valve plate at the same time, improving processing efficiency. Attached Figure Description

[0026] Figure 1 Axonometric schematic diagram of the overall structure of the existing technology Figure 2 This is an isometric schematic diagram of the overall structure of an embodiment of this application.

[0027] Figure 3 for Figure 2 A magnified view of section A in the middle.

[0028] Figure 4 for Figure 2 A magnified view of section B in the middle.

[0029] Figure 5 This is a partial sectional view of the main overall structure of an embodiment of this application.

[0030] Figure 6 for Figure 5 A magnified view of section C.

[0031] Figure 7 for Figure 5 A magnified view of section D in the middle.

[0032] Reference numerals: 1. Machine body; 2. Grinding table; 3. Placing tray; 4. Valve plate; 5. Grinding head; 51. Drive table; 52. Upper grinding block; 53. Cover; 6. Rotating mechanism; 61. Rotating table; 611. Lifting part; 612. Rotating part; 62. External gear ring; 63. Drive roller; 64. Guide roller; 7. Feed inlet; 8. Discharge outlet; 9. Feed conveyor belt; 10. Discharge conveyor belt; 11. Electric cylinder; 12. Slider; 13. Top rod; 14. Sliding table; 15. Conveying roller; 16. Linkage mechanism; 161. Drive spring; 162. Linkage inclined plane; 163. Linkage rod; 17. Feed box; 18. Inlet; 19. Drop outlet; 20. Baffle; 21. Divider plate; 22. Anti-slip protrusion; 23. Lower grinding block; 24. Liquid passage pipe; 25. Liquid discharge pipe; 26. Positioning teeth; 27. Receiving hopper. Detailed Implementation

[0033] The following is in conjunction with the appendix Figures 2-7 This application will be described in further detail.

[0034] This application discloses a double-sided grinding device, referring to... Figure 2 and Figure 3The system includes a machine body 1 mounted on the ground, a grinding table 2 fixedly installed on the machine body 1, a storage tray 3 placed on the grinding table 2, a valve plate 4 installed on the storage tray 3, a grinding head 5 slidably mounted above the grinding table 2, the grinding head 5 sliding along the height direction of the machine body 1, and the grinding head 5 abutting against the valve plate 4 through sliding. A rotating mechanism 6 is provided between the storage tray 3 and the grinding table 2. The rotating mechanism 6 includes a rotating table 61, an outer gear ring 62, a drive roller 63, and a guide roller 64. The rotating table 61 is rotatably positioned at the center of the grinding table 2. The outer gear ring 62 is sleeved on the outside of the storage tray 3. The drive roller 63 is evenly arranged in a circle around the circumference of the rotating table 61. The guide roller 64 is evenly arranged in a circle around the circumference of the grinding table 2. The outer gear ring 62 meshes with the drive roller 63 and the guide roller 64. The grinding table 2 has an inlet 7 and an outlet 8 on opposite sides, respectively. The guide roller 64 is located at... The feed inlet 7 and the discharge outlet 8 are slidably mounted on the grinding table 2. The feed inlet 7 and the discharge outlet 8 are opened by sliding the guide roller 64 inside the grinding table 2. An electric cylinder 11 is set on the side of the rotating table 61 facing the discharge outlet 8. The machine body 1 is equipped with an inlet conveyor belt 9 at the feed inlet 7, which conveys the material towards the grinding table 2. The machine body 1 is equipped with a discharge conveyor belt 10 at the discharge outlet 8, which conveys the material away from the grinding table 2. The discharge outlet 8 and the feed inlet 7 are opened by sliding the guide roller 64. The electric cylinder 11 pushes the placement tray 3 to push the ground valve plate 4 to the discharge conveyor belt 10, and then the material is carried away from the grinding table 2 by the conveyor belt. The placement tray 3 with the unground material is sent into the grinding table 2 by the inlet conveyor belt 9, thereby realizing automated loading and unloading and improving the processing efficiency of the valve plate 4.

[0035] Reference Figure 2 The grinding table 2 is equipped with two sliders 12, which are respectively located at the feed inlet 7 and the discharge outlet 8. The guide rollers 64 located at the feed inlet 7 and the discharge outlet 8 are installed on the sliders 12 at the corresponding positions. The sliders 12 can simultaneously drive the guide rollers 64 located at the feed inlet 7 or the discharge outlet 8, thus facilitating synchronous driving.

[0036] Reference Figure 1The rotating table 61 includes an inner lifting part 611 and an outer rotating part 612. The lifting part 611 is mounted on the grinding table 2 and moves up and down on the grinding table 2. In this embodiment, the lifting part 611 is driven to move up and down on the grinding table 2 by a push cylinder. The rotating part 612 is rotatably disposed on the grinding table 2 and is sleeved outside the lifting part 611. The drive roller 63 is fixed around the rotating part 612. The electric cylinder 11 is mounted on the lifting part 611. The outer rotating part 612 drives the drive roller 63 to rotate, thereby driving the tray 3. The electric cylinder 11 is mounted on the lifting part 611 and can move during grinding by... The probability of the electric cylinder 11 being pressed by the grinding head 5 is reduced, thereby reducing the probability of the electric cylinder 11 being damaged by the grinding head 5. After grinding is completed, the electric cylinder 11 is lifted so that the electric cylinder 11 can drive the placement tray 3 to disengage from the grinding table 2 normally. At the same time, the electric cylinder 11 does not need to rotate on the lifting part 611, and there is no need to readjust the position of the electric cylinder 11 after grinding. In this embodiment, multiple push rods 13 are fixed on the electric push rod of the electric cylinder 11. The placement tray 3 is pushed out of the grinding table 2 by the multiple push rods 13 passing through the gap of the drive roller 63, so that the placement table abuts against the discharge conveyor belt 10 and is sent out of the grinding table 2.

[0037] Reference Figure 2 and Figure 4 A sliding platform 14 is slidably mounted on the machine body 1. The sliding platform 14 is driven by a cylinder mounted on the machine body 1. A conveyor roller 15 is rotatably mounted on the sliding platform 14. The conveyor roller 15 is powered by a motor and rotates on the sliding platform 14. The feed conveyor belt 9 and the discharge conveyor belt 10 are both sleeved on the conveyor roller 15. The feed conveyor belt 9 and the discharge conveyor belt 10 are mounted on the sliding platform 14 through the rotation of the conveyor roller 15. The sliding platform 14 moves the feed conveyor belt 9 and the discharge conveyor belt 10 towards or away from the grinding table 2. The setting of the sliding platform 14 can drive the discharge conveyor belt 10 and the feed conveyor belt 9 away from the grinding table 2 when the machine body 1 is performing grinding processing, thereby reducing the impact of the feed conveyor belt 9 and the discharge conveyor belt 10 on grinding and reducing the probability of damage caused by mechanical collision.

[0038] Reference Figure 2 and Figure 4A linkage mechanism 16 is provided between the slider 12 and the sliding table 14. The linkage mechanism 16 includes a drive spring 161, a linkage inclined surface 162, and a linkage rod 163. The drive spring 161 is located between the slider 12 and the grinding table 2. The elastic force of the drive spring 161 drives the slider 12 to slide, causing the guide roller 64 to extend out of the grinding table 2. The linkage inclined surface 162 is formed on the slider 12. The linkage rod 163 is fixed on the sliding table 14. The sliding table 14 slides towards the grinding table 2. The sliding block 12, driven by the contact inclined plane 162, slides and moves the guide roller 64 into the grinding table 2. The linkage mechanism 16 can drive the sliding guide roller 64 to open the feed port 7 and the discharge port 8 while the sliding table 14 drives the feed conveyor belt 9 and the discharge conveyor belt 10 to connect with the grinding disc. At the same time, when the sliding table 14 moves away from the grinding table 2, the linkage rod 163 is driven to disengage from the contact inclined plane 162, so that the slider 12 is lifted under the elastic force of the drive spring 161 and the guide roller 64 is driven to reset.

[0039] Reference Figure 5 and Figure 7 A feeding box 17 is installed on the feeding conveyor belt 9, and the feeding box 17 is mounted above the feeding conveyor belt 9. The feeding box 17 has a release inlet 18 at the top and a drop outlet 19 at the bottom. A baffle 20 is slidably installed at the drop outlet 19. The baffle 20 slides out of the feeding box 17 to open the drop outlet 19, and slides into the feeding box 17 to close the drop outlet 19. A partition plate 21 is slidably installed above the baffle 20. The partition plate 21 slides into the feeding box 17 to separate the storage tray 3 at the bottom of the feeding box 17 from the storage tray 3 at the top. The baffle 20 slides out of the feeding box 17, and the storage tray 3 inside the feeding box 17 can fall normally onto the baffle 20. The baffle 20 and the partition plate 21 are located on opposite sides of the feeding box 17 and are driven by the same mechanism. Driven by a pneumatic cylinder, when the baffle 20 slides into the feed box 17, the partition plate 21 slides out of the feed box 17. When the baffle 20 slides out of the feed box 17, the partition plate 21 slides into the feed box 17, thus ensuring that only one tray 3 falls out of the feed box 17 each time it discharges material. The feed box 17 is fixed with positioning teeth 26 on the outer toothed ring 62 around its circumference. The feed box 17 is used to store the tray 3 to be processed. The positioning teeth 26 on the outer toothed ring 62 can position the tray 3, so that when the tray enters the grinding disc, it can directly mesh with the drive roller 63 without adjustment. The surface of the feed conveyor belt 9 is evenly covered with a layer of anti-slip protrusions 22. The anti-slip protrusions 22 can reduce the probability of the tray 3 slipping or deflecting during transmission.

[0040] Reference Figure 5 and Figure 6The grinding head 5 includes a drive platform 51, an upper grinding block 52, and a cover 53. The drive platform 51 is slidably mounted on the machine body 1 by an electric cylinder 11. The upper grinding block 52 is installed on the side of the drive platform 51 facing the grinding table 2. The cover 53 covers the upper grinding block 52. When the upper grinding block 52 abuts against the valve plate 4, the cover 53 covers the grinding table 2. The cover 53 can block the waste chips that splash during grinding, reducing the environmental pollution caused by the waste chips. A lower grinding block 23 is installed on the grinding table 2. The lower grinding block 23, together with the upper grinding block 52, can grind both sides of the valve plate 4 simultaneously, improving processing efficiency. A liquid pipe 24 is installed on the drive platform 51. One end of the liquid pipe 24 is connected to the grinding liquid source, and the other end extends... Grinding fluid is introduced into the cover 53 to assist the upper grinding block 52 and lower grinding block 23 in grinding and improve the grinding effect. A drain pipe 25 is installed on the grinding table 2. One end of the drain pipe 25 extends into the grinding table 2, and the other end extends out of the grinding table 2 to connect to the waste liquid recovery device. A receiving hopper 27 is set on the grinding table 2. After grinding, the grinding fluid flows from the circumference of the grinding table 2 into the receiving hopper 27. When the cover 53 is in place, it restricts the discharge of grinding fluid, thereby reducing the discharge of grinding fluid during the grinding process. After grinding, the cover 53 is raised to discharge the grinding fluid into the receiving hopper 27, and then it is discharged to the recovery device through the drain pipe 25 for recycling treatment, reducing the environmental impact of grinding debris.

[0041] The implementation principle of this application embodiment is as follows: The valve plate 4 to be ground is installed on the tray 3, so that both sides of the valve plate 4 extend out of the tray 3. The tray 3 with the valve plate 4 installed is placed and stacked in the feed box 17. The feed conveyor belt 9 is driven to slide towards the grinding table 2, so that the linkage mechanism 16 drives the guide roller 64 at the feed inlet 7 to slide and collect it. Then, the trays 3 are dropped onto the feed conveyor belt 9 through the drop outlet 19 in sequence. The feed conveyor belt 9 sends the trays 3 onto the grinding table 2. At the same time, the rotating part 612 on the grinding table 2 rotates and drives the trays 3 to move away from the feed inlet 7, so that subsequent trays 3 can continue to be sent into the grinding table 2. After the grinding table 2 is full of trays 3, the feed conveyor belt 9 is driven away. After the grinding table 2 and guide roller 64 are reset, the grinding head 5 is slid away so that the cover 53 covers the grinding table 2 and the upper grinding block 52 abuts against the valve plate 4. Then, the rotating part 612 is driven to rotate while the grinding liquid is introduced to grind the valve plate 4 on both sides. After the grinding is completed, the grinding head 5 is driven to slide away from the grinding table 2 and the discharge conveyor belt 10 is driven to slide towards the grinding table 2, which drives the guide roller 64 at the discharge port 8 to slide and be stored. At the same time, the lifting part 611 is driven to lift and align the electric cylinder 11 with the discharge port 8. The rotating part 612 drives the placement plate 3 to move to the discharge port 8 and then the cylinder pushes the placement plate 3 into the discharge conveyor belt 10. The material is sent out of the grinding table 2 through the discharge conveyor belt 10 for subsequent processing, thus completing the unloading of the grinding equipment.

[0042] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A double-sided grinding device, comprising a body (1), a grinding table (2) mounted on the body (1), a tray (3) placed on the grinding table (2), a valve plate (4) mounted on the tray (3), a grinding head (5) slidably disposed above the grinding table (2), the grinding head (5) abutting against the valve plate (4) by sliding, a rotating mechanism (6) disposed between the tray (3) and the grinding table (2), the rotating mechanism (6) comprising a rotating table (61), an external gear ring (62), a drive roller (63) and a guide roller (64), the rotating table (61) being rotatably disposed at the center of the grinding table (2), the external gear ring (62) being sleeved on the tray (3), the drive roller (63) being evenly disposed in a circle around the circumference of the rotating table (61), the guide roller (64) being evenly disposed in a circle around the circumference of the grinding table (2), the external gear ring (62) meshing with the drive roller (63) and the guide roller (64), characterized in that: The grinding table (2) is provided with a feed inlet (7) and a discharge outlet (8) on opposite sides. The guide roller (64) is slidably disposed on the grinding table (2) at the feed inlet (7) and the discharge outlet (8). The feed inlet (7) and the discharge outlet (8) are opened by sliding the guide roller (64) into the grinding table (2). The rotating table (61) is provided with an electric cylinder (11) on the side facing the discharge outlet (8). The machine body (1) is provided with an infeed conveyor belt (9) at the feed inlet (7) and an outfeed conveyor belt (10) at the discharge outlet (8).

2. The double-sided grinding equipment according to claim 1, characterized in that: The grinding table (2) is provided with a sliding block (12). There are two sliding blocks (12), which are respectively located at the feed inlet (7) and the discharge outlet (8). The guide rollers (64) that are slidably located at the feed inlet (7) and the discharge outlet (8) are installed on the sliding blocks (12).

3. The double-sided grinding equipment according to claim 2, characterized in that: The rotating table (61) includes an inner ring lifting part (611) and an outer ring rotating part (612). The lifting part (611) is installed on the grinding table (2) and moves up and down on the grinding table (2). The rotating part (612) is rotatably disposed on the grinding table (2). The rotating part (612) is sleeved outside the lifting part (611). The drive roller (63) is fixed around the rotating part (612). The electric cylinder (11) is installed on the lifting part (611).

4. The double-sided grinding equipment according to claim 3, characterized in that: A sliding platform (14) is slidably arranged on the machine body (1). The feed conveyor belt (9) and the discharge conveyor belt (10) are both driven on the sliding platform (14). The sliding platform (14) carries the feed conveyor belt (9) and the discharge conveyor belt (10) to slide towards or away from the grinding table (2).

5. A double-sided grinding device according to claim 4, characterized in that: A linkage mechanism (16) is provided between the slider (12) and the sliding table (14). The linkage mechanism (16) includes a drive spring (161), a linkage inclined surface (162), and a linkage rod (163). The drive spring (161) is located between the slider (12) and the grinding table (2). The elastic force of the drive spring (161) drives the slider (12) to slide and drive the guide roller (64) to extend out of the grinding table (2). The linkage inclined surface (162) is opened on the slider (12). The linkage rod (163) is fixed on the sliding table (14). The sliding table (14) slides towards the grinding table (2). The linkage rod (163) abuts against the linkage inclined surface (162) and drives the slider (12) to slide and drive the guide roller (64) to be stored in the grinding table (2).

6. The double-sided grinding equipment according to claim 5, characterized in that: The feeding conveyor belt (9) is provided with a feeding box (17), and the feeding box (17) is fixed with positioning teeth (26) corresponding to the outer toothed ring (62) in the circumferential direction.

7. A double-sided grinding device according to claim 6, characterized in that: The surface of the feed conveyor belt (9) is uniformly covered with a layer of anti-slip protrusions (22).

8. A double-sided grinding device according to claim 7, characterized in that: The grinding head (5) includes a drive platform (51), an upper grinding block (52) and a cover (53). The drive platform (51) is slidably disposed on the machine body (1). The upper grinding block (52) is installed on the side of the drive platform (51) facing the grinding table (2). The cover (53) covers the upper grinding block (52). When the upper grinding block (52) abuts against the valve plate (4), the cover (53) covers the grinding table (2).

9. A double-sided grinding device according to claim 8, characterized in that: The grinding table (2) is equipped with a lower grinding block (23).

10. A double-sided grinding device according to claim 9, characterized in that: A liquid-passing pipe (24) is installed on the drive table (51), and a liquid-draining pipe (25) is installed on the grinding table (2).

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