A double-sided grinding and polishing equipment with an upper plate adjustment mechanism

Abstract

This invention relates to the field of grinding and polishing. To address the drawback of existing upper plate adjustment mechanisms requiring additional drive equipment for height adjustment, this invention proposes an upper plate adjustment mechanism for a double-sided grinding and polishing device. The mechanism includes a top plate and an upper plate. A sleeve is rotatably connected through the center of the top plate. A drive mechanism is located at the bottom of the top plate. A rod is inserted into the sleeve. The upper plate is mounted on the bottom end of the rod. The upper half of the rod has a vertical groove on its outer periphery, and the lower half has a threaded groove on its outer periphery. A movable column passes through one side of the top plate. A horizontal plate is welded to the side of the movable column, and a second spring is welded to the top of the horizontal plate. A limiting mechanism for restricting the rod is located at the top of the top plate, and a fixing mechanism for fixing the movable column is located at the bottom end of the rod. This invention uses only a single forward and reverse motor to drive both the lifting and rotation of the upper plate. Height adjustment and rotation are independent, reducing equipment costs and avoiding risks such as power cord tangling or detachment.

Description

Technical Field

[0001] This invention relates to the field of grinding and polishing technology, and in particular to an upper plate adjustment mechanism for a double-sided grinding and polishing device. Background Technology

[0002] Grinding and polishing is a surface finishing process used to achieve desired dimensions and surface quality. It typically employs a polishing slurry, a water-soluble polishing agent free of sulfur, phosphorus, and chlorine additives. This slurry possesses excellent degreasing, rust-preventing, cleaning, and brightening properties, enabling metal products to surpass their original luster. Grinding and polishing equipment is a mechanical device used to grind and polish workpieces. Double-sided grinding and polishing equipment can simultaneously grind and polish both the upper and lower surfaces of a workpiece, and includes two grinding and polishing discs: an upper disc and a lower disc.

[0003] During the grinding and polishing process, the position of the upper plate needs to be adjusted as the workpiece is loaded, unloaded, and processed. During loading and unloading, the upper plate needs to be raised to facilitate the placement and retrieval of the workpiece. During processing, the lower plate needs to be lowered until it is in contact with the outer surface of the workpiece to facilitate grinding and polishing. However, existing upper plate adjustment mechanisms all use a separate lifting device, such as an electric telescopic rod, to control the lifting and lowering of the upper plate to adjust its height. This method not only increases equipment costs, but also requires the upper plate's drive motor to be lifted and lowered simultaneously while the electric telescopic rod is lifting and lowering the upper plate. This results in the drive motor's power cord not being able to be fixed, which may lead to risks such as the power cord becoming tangled or detached. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing an upper plate adjustment mechanism for a double-sided grinding and polishing device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A double-sided grinding and polishing equipment upper plate adjustment mechanism includes a top plate and an upper plate. A sleeve is rotatably connected through the middle of the top plate. A drive mechanism for rotating the sleeve is provided at the bottom of the top plate. A rod is inserted into the sleeve. The upper plate is fixedly installed at the bottom end of the rod. A vertical groove is vertically opened on the outer periphery of the upper half of the rod, and a thread is opened on the outer periphery of the lower half of the rod. A movable column is slidably connected through one side of the top plate. A horizontal plate is horizontally welded to the side of the movable column. A second spring is vertically welded to the top of the horizontal plate. A limiting mechanism for restricting the rod is provided at the top of the top plate, and a fixing mechanism for fixing the movable column is provided at the bottom end of the rod.

[0007] As a further technical solution of the present invention, support columns are vertically welded to the four corners of the bottom of the top plate, and the bottom ends of the four support columns are welded to the top of the workbench.

[0008] As a further technical solution of the present invention, both ends of the sleeve are open structures, and multiple vertical grooves are provided, which are evenly distributed along the circumference on the outer periphery of the upper half of the insertion rod.

[0009] As a further technical solution of the present invention, the driving mechanism includes a forward and reverse motor, which is vertically fixedly installed on one side of the bottom of the top plate. A drive gear is fixedly installed at the bottom end of the output shaft of the forward and reverse motor, and a driven gear is welded to the outside of the sleeve. The drive gear and the driven gear mesh.

[0010] The device is equipped with a forward and reverse motor. When grinding is required, the forward and reverse motors are started to drive the drive gear to rotate, and the drive gear drives the sleeve to rotate through the driven gear.

[0011] As a further technical solution of the present invention, the inner wall of the sleeve is provided with an internal thread, and the internal thread and the thread are compatible, and the top of the second spring is welded to the bottom of the top plate.

[0012] As a further technical solution of the present invention, the limiting mechanism includes C-shaped rods, vertical plates are vertically welded to both sides of the top plate, a first spring is horizontally welded to one side of each of the two vertical plates, and a sliding rod is vertically welded to the other end of each of the two first springs. Sliding grooves are horizontally opened on both sides of the top plate, and the bottom ends of the two sliding rods are slidably connected to the inside of the two sliding grooves respectively. Two C-shaped rods are provided, and the two C-shaped rods are respectively welded to the top of the two sliding rods. One end of the two C-shaped rods is located on both sides of the sliding rod, and a triangular wedge is welded to the other end of each of the two C-shaped rods. The two triangular wedges are located on both sides of the moving column, and the two triangular wedges are arranged opposite each other with their inclined surfaces facing downwards.

[0013] By incorporating a limiting mechanism, in the initial state, the ends of the two C-shaped rods are engaged in the vertical groove under the elastic force of the two first springs, preventing the rods from rotating. At this time, the rods can only move up and down within the sleeve. When the moving column moves upward and pushes open the two triangular wedges, the two triangular wedges drive the two C-shaped rods to move to both sides, causing their tops to exit from the vertical groove. At this point, the rods lose their limiting force and can rotate with the sleeve, thereby driving the upper plate to rotate for grinding. With only one forward and reverse motor working in conjunction with the mechanism, the upper plate can not only be raised and lowered to adjust its height but also rotated. Height adjustment and rotation do not affect each other, eliminating the need for additional lifting devices such as electric telescopic rods to control the raising and lowering of the upper plate, reducing equipment costs. Furthermore, it avoids the problem of the drive motor's power cord being unable to be fixed when using an electric telescopic rod to raise and lower the upper plate, as this would cause the drive motor to rise and fall simultaneously. The forward and reverse motors are fixedly installed, and their power cords are fixed, avoiding the risks of power cord tangling or detachment.

[0014] As a further technical solution of the present invention, the fixing mechanism includes a telescopic rod, a sleeve plate is sleeved and rotated on the outer side of the bottom end of the insertion rod, a sleeve rod is horizontally welded on one side of the sleeve plate, the telescopic rod is inserted into the sleeve rod and slidably connected with the sleeve rod, a third spring is horizontally welded between one end of the sleeve rod and the telescopic rod, a bottom opening is opened on the lower side of the front end of the telescopic rod, and a slot is opened on the side of the moving column, the slot being adapted to the front end of the telescopic rod.

[0015] With a fixed mechanism, in the initial position, the top of the telescopic rod is engaged in the slot. When the insert rod descends, it drives the moving column downward through the sleeve plate, sleeve rod, and telescopic rod. At this time, the second spring is in a compressed state, generating a downward rebound force, which in turn gives the moving column a downward rebound force. This allows the moving column to descend with the telescopic rod under its own weight and the rebound force of the second spring. The top of the telescopic rod will not move out of the slot until it descends to the bottom of the moving column and abuts against the surface of the workpiece. At this time, the second spring is in its normal state and does not generate a downward elastic force. The insert rod continues to descend, and the bottom of the moving column generates an upward abutting force, causing the inclined surface of the telescopic rod to abut against the slot, causing the front end of the telescopic rod to move out of the slot, which in turn drives the moving column upward. When the insert rod drives the upper plate to descend and abut against the surface of the workpiece, the top of the moving column abuts against the two triangular inclined blocks and pushes them apart to both sides.

[0016] The beneficial effects of this invention are as follows:

[0017] 1. A single forward and reverse motor, working in conjunction with a mechanism, can not only lift and lower the upper plate to adjust its height, but also rotate it. Height adjustment and rotation are independent of each other, eliminating the need for additional lifting devices such as electric telescopic rods to control the lifting and lowering of the upper plate. This reduces equipment costs and avoids the problem of the drive motor's power cord being unable to be fixed when using an electric telescopic rod to lift and lower the upper plate simultaneously. The forward and reverse motors are fixed in place, and their power cords are also fixed, preventing risks such as tangling or detachment of the power cord.

[0018] 2. When grinding is required, start the forward and reverse motors to drive the drive gear to rotate. The drive gear drives the sleeve to rotate through the driven gear. In the initial state, the ends of the two C-shaped rods are stuck into the vertical groove under the elastic force of the two first springs, so that the insert rod cannot rotate. At this time, the insert rod can only move up and down in the sleeve. In the initial position, the top of the telescopic rod is stuck into the groove. When the insert rod descends, it drives the moving column to move downward through the sleeve plate, sleeve rod and telescopic rod. At this time, the second spring is in a compressed state, which generates a downward rebound force, so that the moving column has a downward rebound force. Thus, the moving column can descend with the telescopic rod under its own weight and the rebound force of the second spring. The top of the telescopic rod will not move out of the groove until it descends to the bottom of the moving column and abuts against the surface of the workpiece. At this time, the second spring is in the normal state and does not generate a downward elastic force. Attached Figure Description

[0019] Figure 1 This is a top view of the upper plate lifting state of the upper plate adjustment mechanism for a double-sided grinding and polishing equipment proposed in this invention;

[0020] Figure 2 This is a top-view structural diagram of the upper plate lifting state of the upper plate adjustment mechanism for a double-sided grinding and polishing equipment proposed in this invention;

[0021] Figure 3 This is a top view of the upper plate working state of the upper plate adjustment mechanism for a double-sided grinding and polishing equipment proposed in this invention.

[0022] Figure 4 This is a side view of the upper plate working state of the upper plate adjustment mechanism for a double-sided grinding and polishing equipment proposed in this invention.

[0023] Figure 5 This is a front view structural diagram of the upper plate working state of the upper plate adjustment mechanism for a double-sided grinding and polishing equipment proposed in this invention.

[0024] Figure 6 This is a bottom view of the working state of the upper plate adjustment mechanism for a double-sided grinding and polishing equipment proposed in this invention.

[0025] Figure 7 This is a schematic diagram of the upper plate adjustment mechanism of the double-sided grinding and polishing equipment proposed in this invention when the top plate is removed;

[0026] Figure 8 This is a schematic diagram of the upper plate adjustment mechanism of the double-sided grinding and polishing equipment proposed in this invention, when the top plate and sleeve are removed.

[0027] In the diagram: 1. C-shaped rod; 2. Top plate; 3. Vertical plate; 4. Slide groove; 5. Upper plate; 6. Insert rod; 7. Vertical groove; 8. Triangular inclined block; 9. First spring; 10. Moving column; 11. Support column; 12. Sleeve; 13. Driven gear; 14. Slide rod; 15. Second spring; 16. Horizontal plate; 17. Driving gear; 18. Sleeve plate; 19. Forward and reverse motor; 20. Slot; 21. Third spring; 22. Sleeve rod; 23. Telescopic rod; 24. Inclined surface; 25. Thread. Detailed Implementation

[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0029] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0030] Please see Figures 1-8 A double-sided grinding and polishing equipment upper plate adjustment mechanism includes a top plate 2 and an upper plate 5. A sleeve 12 is rotatably connected through the middle of the top plate 2. A drive mechanism for rotating the sleeve 12 is provided at the bottom of the top plate 2. A rod 6 is inserted into the sleeve 12. The upper plate 5 is fixedly installed at the bottom end of the rod 6. A vertical groove 7 is vertically opened on the outer periphery of the upper half of the rod 6. A thread 25 is opened on the outer periphery of the lower half of the rod 6. A movable column 10 is slidably connected through one side of the top plate 2. A horizontal plate 16 is horizontally welded on the side of the movable column 10. A second spring 15 is vertically welded on the top of the horizontal plate 16. A limiting mechanism for restricting the rod 6 is provided at the top of the top plate 2. A fixing mechanism for fixing the movable column 10 is provided at the bottom end of the rod 6.

[0031] Please see the appendix Figure 1-6 In a preferred embodiment, support columns 11 are vertically welded to the four bottom corners of the top plate 2, and the bottom ends of the four support columns 11 are welded to the top of the workbench. The four support columns 11 support the top plate 2.

[0032] Please see the appendix Figure 1-8 In a preferred embodiment, both ends of the sleeve 12 are open structures, and multiple vertical grooves 7 are provided, which are evenly distributed along the circumference on the outer periphery of the upper half of the insert rod 6.

[0033] Please see the appendix Figure 4 and 8 In a preferred embodiment, the drive mechanism includes a forward and reverse motor 19, which is vertically fixed to one side of the bottom of the top plate 2. A drive gear 17 is fixedly mounted at the bottom end of the output shaft of the forward and reverse motor 19, and a driven gear 13 is welded to the outside of the sleeve 12. The drive gear 17 and the driven gear 13 mesh. When grinding is required, the forward and reverse motor 19 is started to drive the drive gear 17 to rotate, and the drive gear 17 drives the sleeve 12 to rotate through the driven gear 13.

[0034] Please see the appendix Figure 2 In a preferred embodiment, the inner wall of the sleeve 12 is provided with an internal thread, and the internal thread and the thread 25 are adapted to each other. The top end of the second spring 15 is welded to the bottom of the top plate 2. The engagement of the internal thread and the thread 25 allows the insert rod 6 to move within the sleeve 12.

[0035] Please see the appendix Figure 1 and 5In a preferred embodiment, the limiting mechanism includes a C-shaped rod 1, vertical plates 3 are vertically welded to both sides of the top plate 2, a first spring 9 is horizontally welded to one side of each of the two vertical plates 3, and a sliding rod 14 is vertically welded to the other end of each of the two first springs 9.

[0036] Please see the appendix Figure 1 and 5 In a preferred embodiment, the top plate 2 has horizontally opened grooves 4 on both sides of the top, and the bottom ends of the two slide rods 14 are slidably connected to the two grooves 4 respectively. There are two C-shaped rods 1, and the two C-shaped rods 1 are welded to the top of the two slide rods 14 respectively. One end of the two C-shaped rods 1 is located on both sides of the slide rod 14 respectively.

[0037] Please see the appendix Figure 1 and 5 In a preferred embodiment, the other ends of the two C-shaped rods 1 are each welded with a triangular wedge 8, and the two triangular wedges 8 are located on both sides of the movable column 10, with the two triangular wedges 8 facing each other and their inclined surfaces facing downwards.

[0038] In the initial state, the ends of the two C-shaped rods 1 are stuck inside the vertical groove 7 under the elastic force of the two first springs 9, thus preventing the insertion rod 6 from rotating. At this time, the insertion rod 6 can only move up and down within the sleeve 12. When the moving column 10 moves upward and pushes open the two triangular inclined blocks 8, the two triangular inclined blocks 8 drive the two C-shaped rods 1 to move to both sides so that their tops move out of the vertical groove 7. At this time, the insertion rod 6 loses its restrictive force and can rotate with the sleeve 12, thereby driving the upper plate 5 to rotate for grinding. With only one forward and reverse motor 19 and the mechanism, the upper plate 5 can not only be raised and lowered to adjust its height, but also rotated. Height adjustment and rotation do not affect each other, eliminating the need for additional lifting equipment such as electric telescopic rods to control the raising and lowering of the upper plate 5, reducing equipment costs, and avoiding the risk of the drive motor's power cord not being fixed when the drive motor is raised and lowered simultaneously when the upper plate 5 is raised and lowered by an electric telescopic rod. The forward and reverse motor 19 is fixedly installed, and its power cord is fixed, avoiding the risk of the power cord becoming tangled or detached.

[0039] Please see the appendix Figure 4-6 In a preferred embodiment, the fixing mechanism includes a telescopic rod 23, a sleeve plate 18 is sleeved and rotatably attached to the outer side of the bottom end of the insertion rod 6, a sleeve rod 22 is horizontally welded to one side of the sleeve plate 18, and the telescopic rod 23 is inserted into the sleeve rod 22 and slidably connected to the sleeve rod 22.

[0040] Please see the appendix Figure 4-6In a preferred embodiment, a third spring 21 is horizontally welded between one end of the sleeve rod 22 and the telescopic rod 23. A bottom 24 is provided on the lower side of the front end of the telescopic rod 23, and a slot 20 is provided on the side of the moving column 10. The slot 20 is adapted to the front end of the telescopic rod 23.

[0041] In the initial position, the top of the telescopic rod 23 is inserted into the slot 20. When the insert rod 6 descends, it drives the moving column 10 downward through the sleeve plate 18, sleeve rod 22 and telescopic rod 23. At this time, the second spring 15 is in a compressed state, which generates a downward rebound force, thus giving the moving column 10 a downward rebound force. This allows the moving column 10 to descend with the telescopic rod 23 under its own weight and the rebound force of the second spring 15. The top of the telescopic rod 23 will not move out of the slot 20 until it descends to the bottom of the moving column 10 and abuts against the surface of the workpiece. At this time, the second spring 15 is in a normal state and does not generate a downward elastic force. The insert rod 6 continues to descend. At this time, the bottom of the moving column 10 generates an upward abutting force, which causes the inclined surface of the telescopic rod 23 to abut against the slot 20, causing the front end of the telescopic rod 23 to move out of the slot 20, thus driving the moving column 10 to move upward. When the insert rod 6 drives the upper plate 5 to descend and abut against the surface of the workpiece, the top of the moving column 10 abuts against the two triangular inclined blocks 8 and pushes them apart to both sides.

[0042] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects: When grinding is required, the forward and reverse motor 19 is started to drive the drive gear 17 to rotate. The drive gear 17 drives the sleeve 12 to rotate through the driven gear 13. In the initial state, the ends of the two C-shaped rods 1 are stuck into the vertical groove 7 under the elastic force of the two first springs 9, so that the insertion rod 6 cannot rotate. At this time, the insertion rod 6 can only move up and down in the sleeve 12. In the initial position, the top end of the telescopic rod 23 is stuck into the slot 20, and the insertion rod 6 descends. When the moving column 10 moves downward through the sleeve plate 18, sleeve rod 22 and telescopic rod 23, the second spring 15 is in a compressed state, which generates a downward rebound force, so that the moving column 10 has a downward rebound force. Thus, the moving column 10 can descend together with the telescopic rod 23 under its own weight and the rebound force of the second spring 15. The top of the telescopic rod 23 will not move out of the slot 20 until it descends to the bottom of the moving column 10 and abuts against the surface of the workpiece. At this time, the second spring 15 is in the normal state and does not generate a downward elastic force.

[0043] As the insertion rod 6 continues to descend, the bottom of the moving column 10 generates an upward resisting force, causing the inclined surface of the telescopic rod 23 to abut against the slot 20, thus moving the front end of the telescopic rod 23 out of the slot 20. This causes the moving column 10 to move upward. When the insertion rod 6 drives the upper plate 5 to descend and abut against the surface of the workpiece, the top of the moving column 10 abuts against the two triangular inclined blocks 8 and pushes them apart to the sides. When the moving column 10 moves upward and pushes apart the two triangular inclined blocks 8, the two triangular inclined blocks 8 drive the two C-shaped rods 1 to move to the sides, causing their tops to move out of the vertical groove 7. At this time, the insertion rod 6 loses its restraining force and can rotate together with the sleeve 12, thereby driving the upper plate 5 to rotate for grinding work.

[0044] After grinding is completed, the workpiece is removed, the bottom of the moving column 10 loses its abutment force, and the moving column 10 returns to its original position under the downward rebound force of the second spring 15. When the slot 20 moves to the position flush with the telescopic rod 23, the top of the telescopic rod 23 is inserted into the slot 20 under the rebound force of the third spring 21, making it convenient for the next work.

[0045] By using only one forward and reverse motor 19 in conjunction with the mechanism, the upper plate 5 can not only be raised and lowered to adjust its height, but also rotated. Height adjustment and rotation do not affect each other, eliminating the need for additional lifting devices such as electric telescopic rods to control the raising and lowering of the upper plate 5, thus reducing equipment costs. Furthermore, it avoids the problem of the drive motor's power cord being unable to be fixed when the upper plate 5 is raised and lowered by an electric telescopic rod. The forward and reverse motor 19 is fixedly installed, and its power cord is fixed, avoiding the risks of the power cord becoming tangled or detached.

[0046] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the invention (including the claims) is limited to these examples; within the framework of the invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in the details for the sake of brevity.

[0047] This invention is intended to cover all such substitutions, modifications, and variations falling within the broad scope of the claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A top plate adjustment mechanism for a double-sided polishing apparatus, comprising a top plate (2) and a top disk (5), characterized by, The middle part of the top plate (2) is through and rotationally connected with a sleeve (12), the bottom of the top plate (2) is provided with a driving mechanism for driving the sleeve (12) to rotate, the sleeve (12) is inserted with a plug rod (6), the upper disc (5) is fixedly installed at the bottom end of the plug rod (6), the upper half of the plug rod (6) is vertically provided with a vertical groove (7) on the outer periphery, the lower half of the plug rod (6) is provided with a thread (25) on the outer periphery, one side of the top plate (2) is through and slidingly connected with a moving column (10), the side of the moving column (10) is horizontally welded with a horizontal plate (16), the top of the horizontal plate (16) is vertically welded with a second spring (15), the top of the top plate (2) is provided with a limiting mechanism for limiting the plug rod (6), the bottom end of the plug rod (6) is provided with a fixing mechanism for fixing the moving column (10). The limiting mechanism comprises C-shaped rods (1), the top of the top plate (2) is vertically welded with vertical plates (3) on both sides, the opposite sides of the two vertical plates (3) are horizontally welded with first springs (9), and the other ends of the two first springs (9) are vertically welded with sliding rods (14).

2. The upper plate adjusting mechanism for a double-sided polishing apparatus according to claim 1, wherein The bottom of the top plate (2) is vertically welded with support columns (11) at four corners, and the bottom ends of the four support columns (11) are welded on the top of the workbench.

3. The upper plate adjusting mechanism for a double-sided polishing apparatus according to claim 1, wherein The two ends of the sleeve (12) are open structures, the vertical groove (7) is provided with a plurality of vertical grooves (7), and the plurality of vertical grooves (7) are uniformly distributed on the outer periphery of the upper half of the plug rod (6).

4. The upper plate adjusting mechanism for a double-sided polishing apparatus according to claim 1, wherein The driving mechanism comprises a forward and reverse motor (19), the forward and reverse motor (19) is vertically fixedly installed on one side of the bottom of the top plate (2), the output shaft of the forward and reverse motor (19) is fixedly installed with a driving gear (17) at the bottom end, the outer side of the sleeve (12) is welded with a driven gear (13), and the driving gear (17) and the driven gear (13) are engaged.

5. The upper plate adjusting mechanism for a double-sided polishing apparatus according to claim 1, wherein The inner wall of the sleeve (12) is provided with an internal thread, and the internal thread is matched with the thread (25), and the top end of the second spring (15) is welded to the bottom of the top plate (2).

6. The upper plate adjusting mechanism for a double-sided polishing apparatus according to claim 1, wherein The top of the top plate (2) is horizontally provided with sliding grooves (4) on both sides, the bottom ends of the two sliding rods (14) are respectively slidingly connected in the two sliding grooves (4), the C-shaped rods (1) are provided with two, and the two C-shaped rods (1) are respectively welded on the top of the two sliding rods (14), and one end of the two C-shaped rods (1) is respectively located on the two sides of the sliding rod (14).

7. The upper plate adjusting mechanism for a double-sided polishing apparatus according to claim 6, wherein The other end of the two C-shaped rods (1) is welded with a triangular inclined block (8), and the two triangular inclined blocks (8) are respectively located on the two sides of the moving column (10), and the two triangular inclined blocks (8) are oppositely arranged and the inclined surfaces face downward.

8. The upper plate adjusting mechanism for a double-sided polishing apparatus according to claim 1, wherein The fixing mechanism comprises a telescopic rod (23), the bottom end of the plug rod (6) is sleeved and rotated with a sleeve plate (18) on the outer side, the sleeve plate (18) is horizontally welded with a sleeve rod (22) on one side, and the telescopic rod (23) is inserted into the sleeve rod (22) and slidingly connected with the sleeve rod (22).

9. The upper plate adjusting mechanism for a double-sided polishing apparatus according to claim 8, wherein The same third spring (21) is horizontally welded between the inner end of the sleeve rod (22) and the telescopic rod (23), the lower end (24) is arranged at the front end of the telescopic rod (23), the clamping groove (20) is arranged at the side of the moving column (10), and the clamping groove (20) is matched with the front end of the telescopic rod (23).

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