A glass polishing sheet structure convenient to install and replace

Abstract

The application discloses a glass polishing piece structure convenient to install and replace, relates to the field of glass polishing pieces, and comprises a polishing piece body and an insertion block fixed in the middle of the top end of the polishing piece body, the upper end of the insertion block movably sleeves with a fixing seat, the inner wall of one side of the fixing seat is symmetrically provided with a rotating block with the lower end engaged with the upper end of the insertion block, one side of the rotating block is fixedly provided with a handle for driving the rotating block to rotate, and the middle of the inner wall of one side of the fixing seat is symmetrically provided with a limiting rod with the lower end inserted into the interior of the insertion block; the handle is arranged in the interior of the fixing seat and flush with the outer wall, the middle of the limiting rod is pinched to trigger unlocking, a double mistaken touch protection mechanism is formed, the risk of accidental falling of the polishing piece caused by mistaken touch of the operator is reduced, the radial limiting is formed by matching the special-shaped groove and the lower end of the limiting rod, the axial fixing is realized by matching the engagement of the rotating block and the insertion block, the torque resistance of the connecting rod and the polishing precision are improved.

Description

Technical Field

[0001] This application relates to the field of glass polishing discs, and more particularly to a glass polishing disc structure that is easy to install and replace. Background Technology

[0002] Glass polishing sheets are made by mixing nano-sized silica particles with a high-efficiency adhesive, uniformly coating the surface of a polyester film, and then drying and curing them. They can be used for processing lines, chamfers, curved slabs, and irregular shapes of marble, engineered stone, and granite, as well as for grinding and polishing ceramic tiles, achieving a gloss level of over 90 degrees. They can also be used for renovating floors laid with marble, engineered stone, granite, ceramic tiles, concrete, and aggregate hardeners.

[0003] For example, patent application number 202021828005.0 discloses a glass polishing sheet structure, but it still has the following shortcomings in practical use:

[0004] The aforementioned device includes a polishing disc body with mounting holes, a fixing chamber, a connecting rod, a mounting chamber with locking blocks, two first telescopic rods and a first spring, a button, etc. The locking blocks and the first spring cooperate to achieve quick installation of the connecting rod and the polishing disc body for subsequent processing. During use, the button is exposed outside the mounting chamber, and the operator is prone to accidentally touching it, leading to accidental disassembly, causing the polishing disc to fall off, increasing the risk of equipment damage or personal safety hazards. It only relies on the locking blocks for axial fixation and does not have a radial limiting structure. During polishing, the connecting rod is prone to rotation due to torque, directly affecting the polishing accuracy. The whole device lacks an effective locking mechanism, resulting in insufficient connection stability and further reducing the reliability of use. Utility Model Content

[0005] To address the issues of accidental detachment and rotation of the polishing disc, this application provides a glass polishing disc structure that is easy to install and replace.

[0006] The glass polishing disc structure that is easy to install and replace provided in this application adopts the following technical solution:

[0007] A glass polishing disc structure that is easy to install and replace includes a polishing disc body and an insert block fixed at the top center of the polishing disc body. A fixing seat is movably fitted on the upper end of the insert block. A rotating block with its lower end engaging with the upper end of the insert block is symmetrically and rotatably arranged on the upper end of one side of the inner wall of the fixing seat. A handle for driving the rotating block to rotate is fixed on one side of the rotating block. A spring is fixed at the bottom end of the rotating block. A limiting rod with its lower end inserted into the insert block is symmetrically and slidably arranged on the middle of one side of the inner wall of the fixing seat. A fixing cover is fixed on one side of the fixing seat. A back plate is fixed on the side of the fixing seat away from the fixing cover. A connecting block is fixed at the top center of the fixing seat.

[0008] By adopting the above technical solution, the top insert of the polishing disc body is used to connect with the fixed seat to achieve basic positioning; the fixed seat locks the insert and limit rod through the cooperation of the rotating block and spring to prevent the insert from radially shifting, and forms a structural support with the fixed cover and back plate, and completes power transmission by connecting the drive equipment through the connecting block.

[0009] Preferably, the insert has an irregular groove inside, the shape of which matches the shape of the lower ends of the two limiting rods. The lower ends of the two limiting rods slide symmetrically in the irregular groove, and the side of the limiting rod closest to the fixing seat slides on the inner wall of the fixing seat.

[0010] By adopting the above technical solution, the irregular groove inside the insert is matched with the shape of the lower end of the limiting rod to achieve precise radial positioning. The limiting rod slides on the inner wall of the fixed seat to complete the bidirectional limiting of the insert in both axial and rotational directions, ensuring that the polishing disc body and the fixed seat are firmly connected.

[0011] Preferably, the upper end of the fixed base is symmetrically rotatably provided with a rotating shaft, and a rotating block is fixedly sleeved on one end of the rotating shaft.

[0012] By adopting the above technical solution, the rotating shaft serves as the fulcrum of the rotating block, allowing the rotating block to rotate flexibly around the axis, thereby achieving the engagement or disengagement action with the upper end of the insert block and completing the locking and releasing function of the polishing disc body.

[0013] Preferably, the upper ends of the insert block engage with the lower ends of the opposite sides of the two rotating blocks.

[0014] By adopting the above technical solution, the upper two sides of the insert block and the corresponding teeth at the lower ends of the two rotating blocks form a mechanical engagement. The axial locking of the insert block is achieved by the rotation of the rotating blocks, preventing the polishing disc from falling off due to vibration or external force during use.

[0015] Preferably, a second spring is fixedly provided at the middle of the opposite side of the two limiting rods, and the two ends of the second spring are respectively fixed to the middle of the opposite side of the two limiting rods.

[0016] By adopting the above technical solution, the two limiting rods form an elastic linkage structure through spring two. When the insert is inserted, the limiting rod is squeezed and moves in the opposite direction, and spring two is compressed and stores energy. After the insert is in place, spring two releases its elastic force to push the limiting rod to reset, so that the lower end of the limiting rod is stuck into the irregular groove of the insert, thereby realizing adaptive radial limiting.

[0017] Preferably, the two ends of the spring are fixed to the bottom end of the rotating block and the inner bottom surface of one side of the fixed seat, respectively.

[0018] By adopting the above technical solution, spring one is connected to the bottom end of the rotating block and the inner bottom surface of the fixed seat through its two ends, forming an elastic support for the rotating block. When the rotating block rotates and engages the insert, spring one is stretched and stores energy. After unloading the external force, spring one releases its elastic force to drive the rotating block to automatically reset, ensuring that the rotating block maintains its initial state after the polishing sheet is removed.

[0019] Preferably, a spur gear is fixedly sleeved at the end of the two rotating shafts away from the rotating block, and the two ends of the two rotating shafts are respectively rotatably connected to the side of the fixed cover near the fixed seat and the side of the back plate near the fixed seat.

[0020] By adopting the above technical solution, the ends of the two rotating shafts away from the rotating blocks form a linkage mechanism through spur gears. The two ends of the rotating shafts respectively form a rotation support with the fixed cover and the back plate, so that the rotating blocks on both sides can rotate synchronously through gear transmission, ensuring that the forces on both ends of the insert block are balanced, and improving the engagement stability and operational reliability.

[0021] Preferably, a fixing shaft with one end fixed to the back plate is fixedly provided in the middle of the inner wall of the fixing seat on the side away from the fixing cover, and a spur gear two that meshes with two spur gears is rotatably sleeved on the outer side of the fixing shaft.

[0022] By adopting the above technical solution, gear two and spur gear one on both rotating shafts form a gear transmission group. When any rotating block rotates, spur gear two drives the other rotating block to rotate synchronously through meshing transmission.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. This device forms a dual anti-accidental-touch protection mechanism by embedding the handle inside the fixed base and flush with the outer wall, combined with the operation method that requires pinching the protruding block in the middle of the limiting rod to trigger unlocking. This reduces the risk of the polishing pad accidentally falling off due to operator accidental touch. At the same time, the irregular groove adapts to the shape of the lower end of the limiting rod to form a radial limit, and the axial fixation is achieved by the engagement of the rotating block and the insert block. This improves the torque resistance of the connecting rod and the polishing accuracy, thereby increasing production efficiency.

[0025] 2. A gear set consisting of two spur gears (one and two) enables the two rotating blocks to rotate at the same speed and in the same direction, resulting in a uniform force distribution at both ends of the insert block and improving connection stability. Simultaneously, spring one automatically pulls the rotating block back to its original position after disassembly, while spring two stores energy during insertion and pushes the limiting rod into the irregular groove, shortening the assembly and disassembly time and facilitating quick locking and unlocking of the polishing disc. The mechanical fit between the L-shaped block at the upper end of the limiting rod and the top of the rotating block restricts the rotation of the rotating block, preventing accidental rotation due to vibration or external force during polishing, improving locking stability, and ensuring a consistently stable engagement of the locking blocks. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of this application;

[0027] Figure 2 This is a partial structural cross-sectional view of this application;

[0028] Figure 3 This is a schematic diagram of the internal structure of the mounting base in this application;

[0029] Figure 4 This is a schematic diagram of the insert structure of this application;

[0030] Figure 5 This is a cross-sectional view of the insert block in this application;

[0031] Figure 6 This is a schematic diagram of the internal structure of the back panel of this application;

[0032] Figure 7 This is a schematic diagram of the fixing base structure of this application.

[0033] Reference numerals in the attached drawings: 1. Polishing disc body; 2. Fixing base; 3. Fixing cover; 4. Back plate; 5. Connecting block; 6. Insertion block; 7. Rotating block; 8. Limiting rod; 9. Rotating shaft; 10. Handle; 11. Spring 1;

[0034] 12. Spring II; 13. Irregular groove; 14. Spur gear I; 15. Fixed shaft; 16. Spur gear II; 17. Circular hole; 18. Rectangular hole. Detailed Implementation

[0035] The following is in conjunction with the appendix Figure 1 - Figure 7 This application will be described in further detail.

[0036] This application discloses a glass polishing sheet structure that is easy to install and replace.

[0037] Reference Figure 1 - Figure 7 A glass polishing disc structure that is easy to install and replace includes a polishing disc body 1 and an insert 6 (the width of the insert 6 is 12mm to ensure stability) fixed at the top center of the polishing disc body 1. The bottom end of the insert 6 is fixed to the top center of the polishing disc body 1. The insert 6 is T-shaped with barbs, and an irregular groove 13 is formed inside the insert 6. The shape of the irregular groove 13 is as follows (e.g., Figure 5 As shown), ensure that the lower end of the limiting rod 8 can fully enter the irregular groove when the limiting rod 8 is inserted to prevent the insert 6 from rotating or falling off. The top center of the polishing plate body 1 is movably provided with a fixing seat 2 (the width of the inner cavity of the fixing seat 2 needs to be slightly larger than the width of the insert 6, for example, 13mm, to ensure that the insert 6 can be inserted smoothly but will not be too loose). The upper end of the insert 6 is inserted into the lower end of the inner cavity of the fixing seat 2.

[0038] A circular hole 17 is symmetrically provided on the upper part of one side of the fixed base 2. A rotating shaft 9 is rotatably installed inside the circular hole 17. A rotating block 7 is fixedly fitted on one end of the rotating shaft 9. The rotating block 7 is composed of irregular blocks, rectangular blocks and wedge blocks. The shape of the rotating shaft 9 is shown (e.g., Figure 3 As shown), a handle 10 is fixed on one side of a rotating block 7. The handle 10 is L-shaped. The side of the handle 10 near the upper end of the rotating block 7 is fixed to the side of the irregular block of the rotating block 7 near the handle 10. Pulling the handle 10 causes the rotating block 7 to rotate around the rotating shaft 9.

[0039] Before using the device, the upper middle part of the fixed base 2 needs to be fixed to the bottom end of the connecting block 5, so that the upper end of the connecting block 5 is connected to the drive interface, and the lower end of the insert block 6 is fixed to the upper center of the polishing disc body 1. The rotating shaft 9 is movably rotated through the circular hole 17 set in the upper side of the fixed base 2, and the rotating block 7 is fixedly sleeved at the end of the rotating shaft 9 located inside the fixed base 2. The two limiting rods 8 are symmetrically slidably set on the inner wall of one side of the fixed base 2. The handle 10 is fixed on one side of the rotating block 7, and the handle 10 is located inside the fixed base 2. The bottom end of the rotating block 7 and the opposite side of the two limiting rods 8 are respectively installed with spring 11 and spring 12. The end of the rotating shaft 9 away from the rotating block 7 is installed with spur gear 14. The fixed shaft 15 and spur gear 16 are installed between the two spur gears 14, and the spur gear 16 meshes with the two spur gears 14. Then, the fixed cover 3 and the back plate 4 are fixed on both sides of the fixed base 2.

[0040] The side of the handle 10 away from the rotating block 7 is flush with the outer wall of the fixed base 2, so that the handle 10 can be moved by external force. The bottom end of the rotating block 7 is fixed with a spring 11 (the formula for calculating the elastic force of spring 11 is F=kx, where F represents the elastic force of spring 11, k represents the constant of spring 11, x represents the compression of spring 11, the constant of spring 11 k represents the magnitude of the elastic force generated by spring 11 under force per unit length, and the compression of spring 11 x refers to the displacement distance of spring 11 from the original state to the compressed state. Spring 11 is a compression spring with a spring constant k1=1000N / m and a compression of 5×10-3m). The two ends of spring 11 are fixed to the bottom end of the rotating block 7 and the inner bottom surface of one side of the fixed base 2, respectively.

[0041] A limit rod 8 is symmetrically slidably provided on one side of the middle of the fixed base 2. The shape of the limit rod 8 is as follows (e.g. Figure 3As shown), the upper end of the limiting rod 8 is an L-shaped block used to limit the rotation of the rotating block 7. In order to avoid excessive or unstable rotation of the rotating block 7, the size of the L-shaped block needs to be precisely matched with the top shape of the rotating block 7 (for example, the long side of the L-shaped block is 10mm and the wide side is 6mm to ensure sufficient stability when engaged). The lower end of the limiting rod 8 is composed of a rectangular block and a wedge-shaped block. The middle part of the limiting rod 8 is provided with a protruding block that protrudes from the outside of the fixed seat 2. The side of the limiting rod 8 near the fixed seat 2 is in contact with the inner wall of the fixed seat 2 with a gap, so that the limiting rod 8 can slide on the inner wall of the fixed seat 2. The bottom end of the L-shaped block at the upper end of the limiting rod 8 is in contact with the top end of the rotating block 7 to limit the rotation of the rotating block 7 and keep the rotating block 7 in a stable state.

[0042] In use, by inserting the upper end of the insert 6 into the lower end of the fixed base 2, the lower inclined surfaces of the two limiting rods 8 slide in contact with the inner wall of the insert 6, causing the wedge-shaped blocks at the lower ends of the two limiting rods 8 to be squeezed and move in opposite directions, thereby releasing the rotation restriction of the upper L-shaped blocks of the two limiting rods 8 on the top of the rotating block 7. At this time, the second spring 12 is in a compressed state. At the same time, the inclined surfaces on both sides of the upper end of the insert 6 abut against the inclined surfaces at the lower ends of the two rotating blocks 7, squeezing the two rotating blocks 7 so that the two rotating blocks 7 rotate around the two rotating shafts 9 respectively. At this time, the first spring 11 deforms and is in a stretched state. Simultaneously, it drives the two spur gears 14 to rotate synchronously and the second spur gear 16 to rotate in the opposite direction.

[0043] A second spring 12 is fixed at the middle of the opposite side of the two limiting rods 8 (the formula for calculating the elastic force of the second spring 12 is F = kx, where F represents the elastic force of the second spring 12, k represents the spring constant, x represents the compression of the second spring 12, the spring constant k represents the magnitude of the elastic force generated by the second spring 12 under force per unit length, and the compression x of the second spring 12 refers to the displacement distance of the second spring 12 from the original state to the compressed state. The second spring 12 is a compression spring with a spring constant k2 = 500 N / m and a compression amount of 6 × 10-3 m). The two ends of the second spring 12 are fixed to the middle of the opposite side of the two limiting rods 8 respectively.

[0044] A fixing cover 3 is fixedly mounted on one side of the fixing base 2. A rectangular hole 18 is opened in the middle of the fixing cover 3. The rectangular hole 18 is located at the protruding part of the middle of the limiting rod 8. The height of the rectangular hole 18 is the same as the height of the protruding part of the middle of the limiting rod 8. The protruding part of the middle of the limiting rod 8 moves through the rectangular hole 18 of the fixing cover 3, so that the protruding part is exposed on the outside of the fixing cover 3. By pinching the protruding parts of the two limiting rods 8 in opposite directions, the two limiting rods 8 can be moved in opposite directions. At the same time, their protruding parts slide in the rectangular hole 18. The upper end of the inner wall of one side of the fixing base 2 is T-shaped (e.g., Figure 3As shown, the upper L-shaped block of the limiting rod 8 is adapted to the shape of the protrusion at the upper end of the inner wall of the fixed seat 2, so that the upper ends of the two limiting rods 8 slide at the upper end of the fixed seat 2.

[0045] When the insert block 6 continues to move to its limit distance, the spring 11 rebounds and drives the rotating block 7 to reset, thereby locking the lower ends of the two rotating blocks 7 against the outer side of the upper end of the insert block 6. At the same time, the pressure of the wedge blocks at the lower ends of the two limiting rods 8 is released. At this time, the spring 212 rebounds and drives the two limiting rods 8 to move in opposite directions, so that the two limiting rods 8 are reset. The L-shaped blocks at the upper ends of the two limiting rods 8 restrict the rotation of the top end of the rotating block 7, keeping the two rotating blocks 7 stable. At the same time, the lower ends of the two limiting rods 8 are locked into the irregular groove 13. The drive device is started, and the polishing operation can be performed on the object to be polished.

[0046] The middle part of the insert 6 has an irregular groove 13, the shape of which is (e.g.) Figure 5 As shown, the shape of the irregular groove 13 is adapted to the shape of the lower ends of the two limiting rods 8. The lower ends of the two limiting rods 8 slide symmetrically in the irregular groove 13. The protruding parts on both sides of the upper end of the insert block 6 engage with the wedge-shaped blocks at the lower ends of the two rotating blocks 7. A spur gear 14 is fixedly sleeved at the end of the two rotating shafts 9 away from the rotating blocks 7. A back plate 4 is fixedly provided on the side of the fixed seat 2 away from the fixed cover 3. The two ends of the two rotating shafts 9 are rotatably connected to the side of the fixed cover 3 near the fixed seat 2 and the side of the back plate 4 near the fixed seat 2, respectively. A fixed shaft 15 is fixedly installed in the middle of the inner wall of the fixed seat 2 away from the fixed cover 3. The fixed shaft 15 is located between two rotating shafts 9. The center line of the fixed shaft 15 is on the same horizontal line as the center line of the two rotating shafts 9. The diameter of the fixed shaft 15 is the same as the diameter of the rotating shaft 9. The end of the fixed shaft 15 away from the fixed seat 2 is fixed to the side of the back plate 4 close to the fixed seat 2. A spur gear 16 is rotatably sleeved on the outer side of the fixed shaft 15. The teeth on the surface of the spur gear 16 mesh with the teeth on the surfaces of the two spur gears 14.

[0047] When it is necessary to disassemble or replace the polishing disc, by pinching the protruding block in the middle of the limiting rod 8, the two limiting rods 8 slide opposite each other in the middle of the side wall of the connecting rod fixing seat 2, releasing the restriction on the top of the two rotating blocks 7, and then causing the wedge-shaped block at the lower end of the limiting rod 8 to disengage from the irregular groove 13 of the insert block 6. At this time, the second spring 12 is in a compressed state. By continuing to pinch the limiting rod 8 and pulling the handle 10 upward, one of its rotating blocks 7 is driven to rotate around the rotating shaft 9, which in turn drives the first spur gear 14 connected to the handle 10 to rotate, causing the second spur gear 16 to rotate as well, thereby driving the other rotating shaft 9 to rotate. This causes another rotating block 7 to rotate synchronously around another rotating shaft 9, separating the protruding parts on both sides of the upper end of the insert 6 from the wedge-shaped block at the lower end of the rotating block 7, and pulling the insert 6 out from the lower end of the fixed seat 2 to complete the quick disassembly; then, release the handle 10 and the limiting rod 8. At this time, the spring 11 rebounds and pulls the rotating block 7 to rotate in the opposite direction around the rotating shaft 9 to reset the rotating block 7. At the same time, the spring 2 12 rebounds and drives the two limiting rods 8 to reset, so that the upper ends of the two limiting rods 8 restrict the tops of the two rotating blocks 7 again. Replace the new polishing disc body 1 and repeat the above installation operation.

[0048] The implementation principle of the glass polishing disc structure for easy installation and replacement in this application embodiment is as follows: When the device is in use, the insert 6 is inserted into the lower end of the fixed base 2. The inclined surfaces on both sides of the insert 6 press the rotating block 7 to rotate. At this time, it is stretched by the first spring 11. At the same time, the inclined surface at the lower end of the limiting rod 8 is pressed inward, which compresses the second spring 12 and releases the restriction on the top end of the rotating block 7. After the insert 6 is in place, the first spring 11 rebounds and locks the rotating block 7 into the upper end of the insert 6. The second spring 12 rebounds and resets the limiting rod 8, restricting the rotation of the rotating block 7 and locking it into the irregular groove 13. During disassembly, pinch the protruding block in the middle of the limiting rod 8 to make the limiting rod 8 slide in opposite directions, releasing the restriction on the top of the rotating block 7, causing the lower end of the limiting rod 8 to disengage from the irregular groove 13, compressing the second spring 12. Then, pull the handle 10 to drive the rotating block 7 to rotate, causing the other rotating block 7 to rotate synchronously, causing the upper end of the insert 6 to separate from the lower end of the rotating block 7, and pull out the insert 6. Then, release the limiting rod 8 and the handle 10, causing the first spring 11 and the second spring 12 to rebound and drive the rotating block 7 and the limiting rod 8 to reset. After replacing the polishing disc body 1, repeat the installation operation.

[0049] The above are merely optional embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A glass polishing disc structure that is easy to install and replace, characterized in that: The device includes a polishing disc body (1) and an insert (6) fixed at the top center of the polishing disc body (1). A fixed seat (2) is movably fitted on the upper end of the insert (6). A rotating block (7) with its lower end engaging with the upper end of the insert (6) is symmetrically rotated on the upper end of one side of the inner wall of the fixed seat (2). A handle (10) for driving the rotating block (7) to rotate is fixed on one side of the rotating block (7). A spring (11) is fixed at the bottom end of the rotating block (7). A limiting rod (8) with its lower end inserted into the insert (6) is symmetrically slidably arranged on the middle of one side of the inner wall of the fixed seat (2). A fixed cover (3) is fixed on one side of the fixed seat (2). A back plate (4) is fixed on the side of the fixed seat (2) away from the fixed cover (3). A connecting block (5) is fixed at the top center of the fixed seat (2).

2. The glass polishing disc structure for easy installation and replacement according to claim 1, characterized in that: The insert (6) has an irregular groove (13) inside. The shape of the irregular groove (13) is adapted to the shape of the lower end of the two limiting rods (8). The lower ends of the two limiting rods (8) slide symmetrically in the irregular groove (13). The side of the limiting rod (8) close to the fixed seat (2) slides on the inner wall of the fixed seat (2).

3. The glass polishing disc structure for easy installation and replacement according to claim 1, characterized in that: The upper end of the fixed base (2) is symmetrically rotatably provided with a rotating shaft (9), and a rotating block (7) is fixedly sleeved on one end of the rotating shaft (9).

4. The glass polishing disc structure for easy installation and replacement according to claim 1, characterized in that: The upper ends of the insert (6) engage with the lower ends of the opposite sides of the two rotating blocks (7).

5. The glass polishing disc structure for easy installation and replacement according to claim 1, characterized in that: A second spring (12) is fixedly provided at the middle of the opposite side of the two limiting rods (8), and the two ends of the second spring (12) are respectively fixed to the middle of the opposite side of the two limiting rods (8).

6. The glass polishing disc structure for convenient installation and replacement according to claim 1, characterized in that: The two ends of the spring (11) are respectively fixed to the bottom end of the rotating block (7) and the inner bottom surface of one side of the fixed seat (2).

7. The glass polishing disc structure for easy installation and replacement according to claim 3, characterized in that: A spur gear (14) is fixedly fitted at one end of each of the two rotating shafts (9) away from the rotating block (7). The two ends of the two rotating shafts (9) are respectively rotatably connected to the side of the fixed cover (3) near the fixed seat (2) and the side of the back plate (4) near the fixed seat (2).

8. The glass polishing disc structure for easy installation and replacement according to claim 1, characterized in that: The fixing seat (2) has a fixing shaft (15) fixed at one end to the back plate (4) in the middle of the inner wall on the side away from the fixing cover (3). The outer side of the fixing shaft (15) is rotatably fitted with a spur gear (16) that meshes with two spur gears (14).

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