Anti-deviation light guide plate surface grinding device

Abstract

The application relates to the technical field of light guide plate production, in particular to a light guide plate surface grinding treatment device capable of preventing deviation, which comprises a rack, a plane driving assembly arranged on the rack, a follow-up frame connected to the plane driving assembly, a grinding assembly arranged on the follow-up frame, a grinding disc with adjustable height arranged on the grinding assembly, a top plate fixedly installed on the rack, a serpentine groove arranged on the top plate, the grinding assembly being capable of moving along the serpentine groove, and multiple sets of pressing assemblies arranged on both sides of the serpentine groove of the top plate, a pressing piece arranged on the follow-up frame, the pressing piece being matched with the pressing assemblies, and the pressing assemblies around the grinding assembly being kept in a pressed state when the grinding assembly moves, so that the light guide plate is prevented from being twisted and wrinkled during the grinding and polishing process.

Description

Technical Field

[0001] This invention relates to the field of light guide plate manufacturing technology, specifically a surface grinding device for preventing misalignment of a light guide plate. Background Technology

[0002] Before the optical-grade acrylic or polycarbonate substrate of the light guide plate is laid with high-reflectivity microstructure dots through laser engraving, V-groove or UV screen printing, the bottom surface must be polished with ultra-high precision to ensure the absolute consistency of dot density, size and distribution, so as to transform the line or point light source into a surface light source with uniform brightness and no bright spots.

[0003] However, the existing grinding device's fixing mechanism only clamps the light guide plate at the four corners. For large-area plates, the fixing points are far from the center, resulting in the center being almost suspended. Furthermore, during grinding, friction generates heat, and the material expansion is limited by the point constraints at the four corners, which easily causes twisting wrinkles in the center of the plate, directly weakening the forming accuracy of subsequent microstructures and ultimately affecting optical performance and display quality. Summary of the Invention

[0004] The purpose of this invention is to provide a surface grinding device for preventing misalignment of a light guide plate, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A device for surface grinding of a light guide plate to prevent misalignment, comprising: A frame, on which a planar drive assembly is mounted, and a follower frame is connected to the planar drive assembly; A grinding assembly is mounted on the follower frame, and the grinding assembly is equipped with a grinding disc whose height is adjustable; A top plate is fixedly installed on the frame. The top plate is provided with a serpentine groove. The grinding assembly can move along the serpentine groove. The top plate is provided with multiple sets of pressure application assemblies on both sides of the serpentine groove. A pressure-applying component is disposed on the follower frame. The pressure-applying component cooperates with the pressure-applying assembly and can keep the pressure-applying components located around the grinding assembly in a downward state when the grinding assembly moves.

[0006] As a further embodiment of the present invention: the pressure application component includes a lifting member that slides through the top plate, the top of the lifting member is provided with a ball bearing, and the lifting member is provided with a limit ring. One end of the second cylindrical spring sleeved on the lifting member is fixedly connected to the top plate, and the other end is connected to the limit ring. The lifting component has a hollow internal structure; The pressure application assembly also includes an elastic retaining structure disposed within the top plate. When the lifting member moves down to the point where the elastic retaining structure abuts against the light guide plate, the elastic retaining structure is able to move relative to the lifting member.

[0007] As a further embodiment of the present invention: the elastic retaining structure includes a pressing member slidably disposed within the lifting member, one end of the pressing member being provided with a protrusion and the other end being provided with a damping member, the protrusion being able to slide within a limiting groove disposed on the side of the lifting member; The elastic retaining structure also includes a third columnar spring disposed within the lifting member, one end of which is connected to the inner wall of the lifting member, and the other end of which is connected to the pressing member.

[0008] As a further embodiment of the present invention: the pressure-applying component is connected to two sets of electromagnetic actuators disposed on the side of the follower frame; The pressure-applying component includes two sets of horizontal components and two sets of vertical components. The horizontal and vertical components form a "well"-shaped structure, and inclined guide surfaces are provided on both sides of the horizontal and vertical components.

[0009] As a further aspect of the present invention: the distance between two sets of the horizontal members is equal to the distance between two adjacent sets of the lifting members, and the length of the vertical member is greater than the distance between three consecutive sets of the lifting members.

[0010] As a further embodiment of the present invention: the polishing assembly includes: A drive device fixedly mounted on the follower frame, the output end of which is connected to a hollow drive shaft; A telescopic shaft is slidably fitted inside the drive shaft, with one end of the telescopic shaft connected to the grinding disc and the other end connected to the lifting structure.

[0011] As a further embodiment of the present invention: the lifting structure includes a connecting ring coaxial with the drive shaft and passing through a side groove of the drive shaft, the connecting ring being connected to the telescopic shaft; The lifting structure also includes a collar that rotatably engages with the connecting ring and a first electric telescopic rod fixedly installed on the follower frame. The actuating end of the first electric telescopic rod is provided with an abutment, and the actuating end of the first electric telescopic rod is slidably connected to the collar. The drive shaft is equipped with a first cylindrical spring, one end of which is connected to the inner wall of the drive shaft, and the other end is connected to the telescopic shaft.

[0012] As a further embodiment of the present invention: the serpentine groove consists of multiple sets of parallel horizontal and vertical grooves, with the horizontal and vertical grooves connected end to end. A slider is slidably installed in the serpentine groove, and the slider is rotatably connected to the drive shaft.

[0013] As a further aspect of the present invention, it also includes: A support plate is fixedly installed on the frame, and the support plate is parallel to the top plate; The pre-compression structure has multiple sets installed at the diagonal corners of the support plate, and the pre-compression structure can fix the four corners of the light guide plate.

[0014] As a further embodiment of the present invention: the pre-compression structure includes a side plate fixedly installed on the support plate, and the side plate is provided with two sets of parallel guide grooves, the guide grooves being formed by inclined grooves and horizontal grooves; The pre-compression structure also includes a follower component disposed within the support plate, the follower component being connected to an elastic telescopic component, and the side of the follower component being provided with a fitting shaft capable of rolling within the guide groove; A second electric telescopic rod is fixedly installed on the side plate, and a vertical plate is connected to the actuating end of the second electric telescopic rod. The vertical plate is slidably connected to the follower.

[0015] Compared with the prior art, the beneficial effects of the present invention are: By setting up pressure components and pressure assembly, firstly, the corresponding small area on the light guide plate can be stably fixed during the grinding operation of the grinding disc, so as to suppress the torsion and wrinkling of the light guide plate during the grinding process. This prevents the light guide plate from thermally expanding and torsion and wrinkling due to the temperature generated during grinding when only the four corners of the light guide plate are fixed. Secondly, when the grinding disc switches the lateral movement trajectory, the corresponding lifting component can also press down to achieve pressure transfer. This ensures that when the grinding disc moves along another set of horizontal slots, multiple sets of lifting components can also act in sequence to press and fix the area around the light guide plate corresponding to the grinding disc. By setting up the grinding components, the grinding pressure is kept constant, preventing the grinding pressure from changing due to the stroke error caused by the pneumatic control in the vibration environment, which would lead to uneven grinding. The pre-compression structure allows the elastic telescopic components to pull the four corners of the light guide plate outward after pressing it down, thus enabling the light guide plate to be laid out flat. This prevents local wrinkles on the light guide plate from being caused by manual placement, which would exacerbate the wrinkling during subsequent polishing. Attached Figure Description

[0016] Figure 1 A schematic diagram of one embodiment of a device for grinding and smoothing the surface of a light guide plate to prevent misalignment.

[0017] Figure 2A schematic diagram of the structure after partial removal of the frame structure in one embodiment of the light guide plate surface grinding treatment device to prevent misalignment.

[0018] Figure 3 A schematic diagram of the grinding component and pressure application component in one embodiment of a light guide plate surface smoothing treatment device to prevent misalignment.

[0019] Figure 4 An exploded view of the structure of the grinding component in one embodiment of the light guide plate surface smoothing treatment device to prevent misalignment.

[0020] Figure 5 A schematic diagram of the pressure application component in one embodiment of the light guide plate surface smoothing treatment device to prevent misalignment.

[0021] Figure 6 A schematic diagram of the pressure application component at another angle in one embodiment of the device for smoothing the surface of the light guide plate to prevent misalignment.

[0022] Figure 7 An exploded view of the pressure application component in one embodiment of the light guide plate surface smoothing treatment device to prevent misalignment.

[0023] Figure 8 A schematic diagram of the structure of a light guide plate surface smoothing device in one embodiment, showing the pressure member moving along a transverse groove.

[0024] Figure 9 A schematic diagram of the structure of a light guide plate surface grinding device for preventing deviation, wherein the pressure member moves along the longitudinal groove in one embodiment.

[0025] Figure 10 A schematic diagram of the pre-pressing structure in one embodiment of the light guide plate surface smoothing treatment device to prevent misalignment.

[0026] In the diagram: 1. Frame; 2. First linear drive module; 3. Second linear drive module; 4. Follower frame; 5. Drive unit; 6. Drive shaft; 7. Telescopic shaft; 8. Grinding disc; 9. Connecting ring; 10. First cylindrical spring; 11. Collar; 12. First electric telescopic rod; 1201. Abutment part; 13. Pressing part; 1301. Horizontal part; 1302. Vertical part; 1303. Inclined guide surface; 14. Electromagnetic actuator; 15. Slider; 16. Top plate; 160 1. Horizontal groove; 1602. Vertical groove; 17. Lifting component; 1701. Ball bearing; 1702. Limiting ring; 1703. Limiting groove; 18. Second cylindrical spring; 19. Third cylindrical spring; 20. Pressing component; 2001. Damping component; 2002. Protrusion; 21. Side plate; 2101. Inclined groove; 2102. Horizontal groove; 22. Vertical plate; 23. Second electric telescopic rod; 24. Follower component; 25. Fitting shaft; 26. Elastic telescopic component; 27. Support plate. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Furthermore, elements in this invention are referred to as being "fixed to" or "set on" another element, which may be directly on the other element or may also include an intervening element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or may also include an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations.

[0029] Please see Figures 1-10 In this embodiment of the invention, a surface grinding device for preventing deviation of a light guide plate includes: a frame 1, a grinding assembly, a top plate 16, and a pressure application component 13.

[0030] The frame 1 is provided with a planar drive assembly, and a follower frame 4 is connected to the planar drive assembly. Specifically, the planar drive assembly includes a first linear drive module 2 and a second linear drive module 3 disposed on the frame 1 and perpendicular to each other. The second linear drive module 3 is disposed on the first linear drive module 2 and is connected to the follower frame 4, so that the follower frame 4 can move in the plane, thereby driving the grinding assembly to move.

[0031] Please see Figures 3-4 The grinding assembly described herein is mounted on the follower frame 4, and the grinding assembly is provided with a grinding disc 8 whose height is adjustable; The polishing components include: A drive device 5 is fixedly installed on the follower frame 4, and the output end of the drive device 5 is connected to an internally hollow drive shaft 6. A telescopic shaft 7 is slidably sleeved inside the drive shaft 6. One end of the telescopic shaft 7 is connected to the grinding disc 8, and the other end is connected to the lifting structure. The lifting structure includes a connecting ring 9 that is coaxial with the drive shaft 6 and passes through the side groove of the drive shaft 6. The connecting ring 9 is connected to the telescopic shaft 7. The lifting structure also includes a collar 11 that rotates and engages with the connecting ring 9 and a first electric telescopic rod 12 that is fixedly installed on the follower frame 4. The first electric telescopic rod 12 has an abutment 1201 on its actuating end and is slidably connected to the collar 11. The drive shaft 6 is equipped with a first cylindrical spring 10. One end of the first cylindrical spring 10 is connected to the inner wall of the drive shaft 6, and the other end is connected to the telescopic shaft 7.

[0032] In this embodiment, in the initial state, the first columnar spring 10 is in a compressed state, and when the grinding disc 8 abuts against the light guide plate and performs the grinding and polishing action, the downward pressure generated by the grinding disc 8 on the light guide plate is provided by the first columnar spring 10, so that the grinding pressure is constant during the grinding process. Compared with the existing technology that uses pneumatic means to control the grinding pressure, firstly, the pressure provided by the spring is more stable, and secondly, it can prevent the uneven grinding uniformity caused by the stroke action error of the pneumatic control device.

[0033] For example, in the prior art, an electric telescopic rod is used to control the grinding pressure of the grinding disc 8. However, considering that the drive device 5, drive shaft 6, grinding disc 8 and other components inevitably vibrate during operation, the stroke of the electric telescopic rod will decrease, thereby reducing the occurrence of the aforementioned uneven grinding.

[0034] Furthermore, after the grinding is completed, by controlling the action of the first electric telescopic rod 12, the telescopic shaft 7 can be pulled upward when the abutting part 1201 abuts against the collar 11, further compressing the first columnar spring 10, while the grinding disc 8 can move toward the top plate 16, thus facilitating the picking and placing of the light guide plate.

[0035] The top plate 16 is fixedly installed on the frame 1. The top plate 16 is provided with a serpentine groove. The grinding component can move along the serpentine groove. The serpentine groove has multiple sets of parallel horizontal grooves 1601 and vertical grooves 1602. The horizontal grooves 1601 and vertical grooves 1602 are connected end to end. A slider 15 is slidably installed in the serpentine groove, and the slider 15 is rotatably connected to the drive shaft 6.

[0036] It should be noted that when the slider 15 moves in two sets of adjacent horizontal slots 1601, the grinding marks on the light guide plate of the grinding disc 8 can be connected together to form a grinding plane, which prevents a certain area on the light guide plate from being repeatedly ground during the reciprocating motion of the grinding disc 8, causing uneven grinding.

[0037] In this embodiment, the second linear drive module 3 can drive the grinding device to move along one of the sets of transverse grooves 1601. During this process, since the slider 15 is slidably disposed in the transverse groove 1601 and the top plate 16 is parallel to the second linear drive module 3, the slider 15 has the effect of longitudinally pulling the drive shaft 6 during the grinding process, thereby improving the grinding uniformity to a certain extent by reducing the vibration generated by the grinding disc 8 during the grinding process.

[0038] Furthermore, when the slider 15 moves to the end of the horizontal slot 1601, the first electric telescopic rod 12 will lift the grinding disc 8 upward. After the first linear drive module 2 enables the slider 15 to switch from one set of horizontal slots 1601 to another set of horizontal slots 1601 via the vertical slot 1602, the first electric telescopic rod 12 releases the grinding disc 8, thereby maintaining the grinding pressure by relying on the elastic force provided by the first columnar spring 10. Based on this setting, the grinding disc 8 can be separated from the light guide plate when moving along the vertical slot 1602, preventing the grinding disc 8 from continuously grinding and causing over-grinding in this area.

[0039] Please see Figures 1-2 , Figures 5-10 The top plate 16 is provided with multiple sets of pressure-applying components on both sides of the serpentine groove. Each pressure-applying component includes a lifting member 17 that slides through the top plate 16. A ball bearing 1701 is provided on the top of the lifting member 17, and a limit ring 1702 is provided on the lifting member 17. One end of a second cylindrical spring 18 sleeved on the lifting member 17 is fixedly connected to the top plate 16, and the other end is connected to the limit ring 1702. The lifting component 17 has a hollow internal structure; The pressure application assembly also includes an elastic retaining structure disposed within the top plate 16. When the lifting member 17 moves down to the point where the elastic retaining structure abuts against the light guide plate, the elastic retaining structure is able to move relative to the lifting member 17. The elastic retaining structure includes a pressing member 20 slidably disposed within the lifting member 17. One end of the pressing member 20 is provided with a protrusion 2002, and the other end is provided with a damping member 2001. The protrusion 2002 can slide within the limiting groove 1703 disposed on the side of the lifting member 17. The elastic retaining structure also includes a third columnar spring 19 disposed within the lifting member 17. One end of the third columnar spring 19 is connected to the inner wall of the lifting member 17, and the other end is connected to the pressing member 20.

[0040] In the initial state, the second columnar spring 18 is in its natural state, while the third columnar spring 19 is in a compressed state. At this time, the protrusion 2002 is in contact with the lower end of the limiting groove 1703. The total length of the pressing member 20 and the lifting member 17 is constant, and the damping member 2001 is separated from the light guide plate. After the light guide plate is fixed on the support plate 27, the pressure member 13 can move synchronously with the grinding disc 8. Specifically, as the grinding disc 8 moves along the transverse groove 1601, the pressure member 13 moves laterally and interacts with the ball bearing 1. When 701 comes into contact, it drives the lifting member 17 to move downward relative to the top plate 16 toward the light guide plate. After the damping member 2001 comes into contact with the light guide plate, the lifting member 17 will continue to move downward so that the pressing member 20 can move relative to the lifting member 17. During this process, the third columnar spring 19 is further compressed, and the resulting elastic force acts on the light guide plate through the damping member 2001. This allows the damping member 2001 to fix the light guide plate in a local area during the movement of the grinding disc 8, thereby preventing the light guide plate from twisting and wrinkling during the grinding process.

[0041] Specifically: the pressure-applying component 13 is disposed on the follower frame 4. The pressure-applying component 13 cooperates with the pressure-applying assembly, and can keep the pressure-applying components located around the grinding assembly in a downward state when the grinding assembly moves. The pressure-applying component 13 is connected to two sets of electromagnetic actuators 14 disposed on the side of the follower frame 4. The height of the pressure-applying component 13 is controlled by the electromagnetic actuators 14, so that in the initial state, multiple sets of pressure-applying components can maintain a predetermined distance from the support plate 27, which facilitates the placement of the light guide plate on the support plate 27. During grinding, the electromagnetic actuators 14 can control the pressure-applying component 13 to move toward the top plate 16, thereby pressing down the corresponding lifting component 17, so that the corresponding damping component 2001 can act on the light guide plate.

[0042] The pressure-applying component 13 includes two sets of horizontal components 1301 and two sets of vertical components 1302. The horizontal components 1301 and the vertical components 1302 form a "well" structure. Both sides of the horizontal components 1301 and the vertical components 1302 are provided with inclined guide surfaces 1303. The inclined guide surfaces 1303 can act on the ball bearings 1701 to press the lifting component 17 downward. Specifically, the distance between the two sets of horizontal members 1301 is equal to the distance between the two adjacent sets of lifting members 17, and the length of the vertical member 1302 is greater than the distance between the three consecutive sets of lifting members 17.

[0043] During use, as the pressure member 13 moves, since the length of the longitudinal member 1302 is greater than the distance between the three sets of continuously distributed lifting members 17, when the pressure member 13 moves along the transverse groove 1601, at least four damping members 2001 on both sides of the grinding disc 8 can be in contact with the light guide plate. That is, when the grinding disc 8 is grinding, the light guide plate around the grinding area can be fixed by the damping members 2001. This setting can ensure that the corresponding small area on the light guide plate can be stably fixed when the grinding disc 8 is grinding, so as to suppress the torsion and wrinkling of the light guide plate during the grinding process, and prevent the light guide plate from thermally expanding and torsion and wrinkling due to the temperature generated by grinding when only the four corners of the light guide plate are fixed.

[0044] When the slider 15 moves in the vertical groove 1602, the lifting members 17 on both sides of the vertical groove 1602 coincide with the horizontal member 1301. This allows the corresponding lifting member 17 to press down during the process of the grinding disc 8 switching from one set of horizontal grooves 1601 to another set of horizontal grooves 1601, thus achieving pressure transfer. This ensures that when the grinding disc 8 moves along another set of horizontal grooves 1601, multiple sets of lifting members 17 can also act sequentially to press and fix the area around the light guide plate corresponding to the grinding disc 8.

[0045] Please see Figure 2 , Figure 10 The anti-displacement light guide plate surface grinding treatment device described herein also includes a pre-pressing structure; A support plate 27 is fixedly installed on the frame 1, and the support plate 27 is parallel to the top plate 16; The pre-pressing structure is provided in multiple sets and installed at the diagonal of the support plate 27. The pre-pressing structure can fix the four corners of the light guide plate. The pre-pressing structure includes a side plate 21 fixedly installed on the support plate 27. The side plate 21 is provided with two sets of parallel guide grooves. The guide grooves are formed by inclined grooves 2101 and horizontal grooves 2102. The pre-compression structure also includes a follower 24 disposed in the support plate 27, the follower 24 is connected to an elastic telescopic member 26, and the side of the follower 24 is provided with a fitting shaft 25 that can roll in the guide groove. A second electric telescopic rod 23 is fixedly installed on the side plate 21. A vertical plate 22 is connected to the actuating end of the second electric telescopic rod 23. The vertical plate 22 is slidably connected to the follower 24.

[0046] In this embodiment, in the initial state, the fitting shaft 25 is at the upper end of the inclined groove 2101. At this time, the elastic telescopic member 26 is separated from the support plate 27, which facilitates the flat laying of the light guide plate on the support plate 27. After the flat laying of the light guide plate is completed, the second electric telescopic rod 23 pulls the upright plate 22 to move, so that the follower 24 moves. At this time, the follower 24 can move downward first and then horizontally with the cooperation of the fitting shaft 25, the inclined groove 2101 and the horizontal groove 2102. During this process, the elastic telescopic member 26 will also move downward first and then horizontally, so that the elastic telescopic member 26 can move towards the light guide plate first, and after pressing the light guide plate, pull the four corners of the guide plate to move outward, so as to perform the flat laying operation of the light guide plate and prevent the light guide plate from having local wrinkles during the manual placement of the light guide plate, which would cause the wrinkles to worsen during subsequent polishing.

[0047] The bottom of the elastic telescopic component 26 is provided with a damping layer. The damping layer can pull the light guide plate to move when it is attached to the light guide plate. At the same time, the damping layer can slide relative to the light guide plate without leaving scratches on the light guide plate.

[0048] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0049] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A device for surface grinding of a light guide plate to prevent misalignment, characterized in that, include: A frame, on which a planar drive assembly is mounted, and a follower frame is connected to the planar drive assembly; A grinding assembly is mounted on the follower frame, and the grinding assembly is equipped with a grinding disc whose height is adjustable; A top plate is fixedly installed on the frame. The top plate is provided with a serpentine groove. The grinding assembly can move along the serpentine groove. The top plate is provided with multiple sets of pressure application assemblies on both sides of the serpentine groove. A pressure-applying component is disposed on the follower frame. The pressure-applying component cooperates with the pressure-applying assembly and can keep the pressure-applying components located around the grinding assembly in a downward state when the grinding assembly moves. The pressure application assembly includes a lifting component that slides through the top plate. The top of the lifting component is provided with a ball bearing, and a limit ring is provided on the lifting component. One end of a second cylindrical spring sleeved on the lifting component is fixedly connected to the top plate, and the other end is connected to the limit ring. The lifting component has a hollow internal structure. The pressure application assembly also includes an elastic retaining structure disposed within the top plate. When the lifting member moves down to the point where the elastic retaining structure abuts against the light guide plate, the elastic retaining structure is able to move relative to the lifting member. The pressure-applying component is connected to two sets of electromagnetic actuators disposed on the side of the follower frame; The pressure-applying component includes two sets of horizontal components and two sets of vertical components. The horizontal and vertical components form a "well" structure, and inclined guide surfaces are provided on both sides of the horizontal and vertical components. The distance between two sets of horizontal members is equal to the distance between two adjacent sets of lifting members, and the length of the vertical member is greater than the distance between three consecutive sets of lifting members.

2. The anti-displacement light guide plate surface grinding treatment device according to claim 1, characterized in that, The elastic retaining structure includes a pressing member slidably disposed within the lifting member. One end of the pressing member is provided with a protrusion, and the other end is provided with a damping member. The protrusion can slide within a limiting groove disposed on the side of the lifting member. The elastic retaining structure also includes a third columnar spring disposed within the lifting member, one end of which is connected to the inner wall of the lifting member, and the other end of which is connected to the pressing member.

3. The anti-displacement light guide plate surface grinding treatment device according to claim 1, characterized in that, The polishing components include: A drive device fixedly mounted on the follower frame, the output end of which is connected to a hollow drive shaft; A telescopic shaft is slidably fitted inside the drive shaft, with one end of the telescopic shaft connected to the grinding disc and the other end connected to the lifting structure.

4. The anti-displacement light guide plate surface grinding treatment device according to claim 3, characterized in that, The lifting structure includes a connecting ring that is coaxial with the drive shaft and passes through a side groove of the drive shaft, and the connecting ring is connected to the telescopic shaft; The lifting structure also includes a collar that rotatably engages with the connecting ring and a first electric telescopic rod fixedly installed on the follower frame. The actuating end of the first electric telescopic rod is provided with an abutment, and the actuating end of the first electric telescopic rod is slidably connected to the collar. The drive shaft is equipped with a first cylindrical spring, one end of which is connected to the inner wall of the drive shaft, and the other end is connected to the telescopic shaft.

5. The anti-displacement light guide plate surface grinding treatment device according to claim 3, characterized in that, The serpentine groove consists of multiple sets of parallel horizontal and vertical grooves, with the horizontal and vertical grooves connected end to end. A slider is slidably installed in the serpentine groove, and the slider is rotatably connected to the drive shaft.

6. The anti-displacement light guide plate surface grinding device according to claim 1, characterized in that, Also includes: A support plate is fixedly installed on the frame, and the support plate is parallel to the top plate; The pre-compression structure has multiple sets installed at the diagonal corners of the support plate, and the pre-compression structure can fix the four corners of the light guide plate.

7. The anti-displacement light guide plate surface grinding device according to claim 6, characterized in that, The pre-compression structure includes a side plate fixedly installed on the support plate, and the side plate is provided with two sets of parallel guide grooves, which are formed by inclined grooves and horizontal grooves. The pre-compression structure also includes a follower component disposed within the support plate. An elastic telescopic component is connected to the follower component, and a fitting shaft capable of rolling within the guide groove is provided on the side of the follower component. A second electric telescopic rod is fixedly installed on the side plate, and a vertical plate is connected to the actuating end of the second electric telescopic rod. The vertical plate is slidably connected to the follower component.

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