A polarizing plate edging machine

Abstract

The present application relates to the technical field of polarizing plate polishing, in particular to a polarizing plate edge grinding machine, which comprises a movable polisher, a workbench and a pressing plate placed on the upper part of a polarizing plate stack, and further comprises a limiting mechanism for limiting the polarizing plate stack on the workbench, and a pressing mechanism for dynamically pressing the polarizing plate stack following the polisher. The present application drives the limiting protrusion to move downward by an electric cylinder, so that the taper hole of the limiting protrusion is nested on the taper column fixed on the upper side of the pressing plate, thereby realizing the static downward pressing and horizontal stable limiting of the pressing plate. At the same time, the groove wheel can move synchronously with the polisher and dynamically press the edge of the pressing plate. By means of the combination of static downward pressing, horizontal limiting and dynamic downward pressing, the polarizing plate stack is continuously and stably pressed by the pressing plate, which effectively prevents the relative sliding or vibration between the sheets, ensures the polishing precision and edge consistency, improves the yield, and reduces the production cost.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of polarizing plate polishing, in particular to a polarizing plate edge polishing machine. BACKGROUND

[0002] As a key optical component, the polarizing plate is widely used in the field of liquid crystal display, and the flatness and smoothness of the edge of the polarizing plate directly affect the imaging quality and overall performance of the display. In the production process of the polarizing plate, due to the limitations of cutting or forming process, burrs often exist on the edge, so that the edge needs to be finished by edge polishing process.

[0003] In the prior art, the edge of the polarizing plate is usually polished by automatic edge polishing equipment. When polishing, the stacked polarizing plates are placed on the workbench, and a pressing plate is covered on the upper part of the polarizing plates. Four groups of pressing mechanisms arranged around the polishing station simultaneously press the pressing plate, so as to apply uniform pressing force to the four edges of the polarizing plate stack, realize overall limiting, and control the pressing mechanism to intelligently give way to the polisher during the movement of the polisher along the edge of the polarizing plate to avoid interference of the mechanism. This way aims to enable the polisher to complete continuous polishing of the edge of the polarizing plate at one time and improve the processing efficiency.

[0004] However, the above-mentioned limiting method still has significant deficiencies. Since the pressing mechanism needs to be dynamically given way during polishing, when the polisher moves to one side, the pressing mechanism on the side needs to be quickly lifted and moved, which causes the pressing stress of the corresponding position of the polarizing plate stack to instantaneously decrease. This sudden change of stress will cause the polarizing plates to produce slight relative sliding or vibration between the plates under the impact of the polishing force of the polisher, which not only affects the polishing accuracy and edge consistency, but also easily causes defects such as cracking and damage of the edge of the polarizing plate, thereby reducing the yield and increasing the production cost. SUMMARY

[0005] In order to solve the above technical problems, the technical scheme adopted by the present application is: a polarizing plate edge polishing machine, comprising a movable polisher, a workbench and a pressing plate placed on the upper part of the polarizing plate stack, a limiting mechanism for limiting the polarizing plate stack is further arranged on the workbench, and a pressing mechanism for dynamically pressing the polarizing plate stack follows the polisher.

[0006] The limiting mechanism comprises four electric cylinders arranged around the four edges of the polarizing plate stack, a limiting nose is arranged on the output end of the electric cylinder through a connecting assembly, and a conical column corresponding to the limiting nose and nested with the limiting nose is fixedly installed on the upper side of the pressing plate.

[0007] The pressing mechanism comprises a connecting seat detachably installed at the central position on the upper side of the pressing plate, a grooved wheel is arranged on the connecting seat through a linkage assembly, and the grooved wheel is arranged along the upper edge of the pressing plate and moves synchronously with the polisher.

[0008] The static downward pressing and horizontal stable limiting of the pressing plate are realized through the nested connection of the limiting boss and the taper column, and the edge of the pressing plate is dynamically pressed by the groove wheel moving synchronously with the polisher, so that the static downward pressing, horizontal limiting and dynamic downward pressing are used to keep the stable limiting operation of the pressing plate on the polarizing sheet stack.

[0009] Preferably, the connecting assembly comprises a cross bar fixedly connected to the telescopic section of the electric cylinder, a screw rod threadedly connected to the side of the cross bar away from the electric cylinder, and the lower end of the screw rod fixedly connected to the limiting boss.

[0010] Preferably, the limiting boss is internally provided with a tapered hole matched with the tapered surface of the taper column, and the pressing plate is stably limited and pushed downward by the limiting boss to limit the polarizing sheet stack through the nested connection of the limiting boss tapered hole with the taper column.

[0011] Preferably, the lower part of the connecting seat is in the form of a threaded stud, and the connecting seat is fixedly connected to the pressing plate by screwing.

[0012] Preferably, the linkage assembly comprises a rotating arm rotatably connected to the connecting seat, the rotating arm is connected to a moving block through a plurality of connecting rods, the moving block is internally provided with a moving arm sliding horizontally, the moving arm is provided with a wheel carrier sliding along its length direction, and the wheel carrier is rotatably connected to the groove wheel.

[0013] Preferably, one end of each of the connecting rods is hingedly connected to the rotating arm, the other end of each of the connecting rods is hingedly connected to the moving block, and the plurality of connecting rods are combined into a parallelogram structure.

[0014] Preferably, the wheel carrier is rotatably provided with a roller and a limiting roller rolling on the moving arm, so that the wheel carrier moves smoothly along the moving arm.

[0015] Preferably, the end of the moving arm away from the connecting seat is fixedly connected to a connecting ring, and the lower side of the polisher is fixedly provided with a downward pressing ring for connecting with the connecting ring through a supporting arm.

[0016] Preferably, the upper side of the connecting ring is in the form of a convex structure, and the lower side of the downward pressing ring is in the form of a concave structure matched with the nested connection of the convex structure of the connecting ring.

[0017] Preferably, the upper edge of the pressing plate is fixedly provided with a rectangular track with an arc-shaped corner, the upper part of the rectangular track is in the form of a sharp head structure, and the groove wheel is in the form of a V-shaped groove structure and is used to move along the track of the rectangular track.

[0018] The beneficial effects of the present application are: firstly, the present application adopts an electric cylinder to drive the limiting baffle to move downwards, so that the tapered hole of the limiting baffle is nested on the tapered column fixed on the upper side of the pressing plate, thereby realizing the static downward pressing and horizontal stable limiting of the pressing plate, and at the same time, the groove wheel can move synchronously with the polisher and dynamically press the edge of the pressing plate, by means of the combination of static downward pressing, horizontal limiting and dynamic downward pressing, the continuous and stable pressing of the pressing plate on the polarizing plate stack is maintained, the relative sliding or vibration between the sheets is effectively prevented, the polishing precision and edge consistency are guaranteed, the yield is improved, and the production cost is reduced.

[0019] Secondly, the present application adopts a connecting seat which is detachably installed on the pressing plate by screwing, so that when the edges of polarizing plates of different specifications are polished, only the pressing plate matched with the size of the polarizing plate needs to be replaced, and then the connecting seat can be quickly installed on the new pressing plate, thereby realizing convenient adaptation, improving the application range and use flexibility of the equipment, and reducing the transformation cost and time consumption caused by changing specifications.

[0020] Thirdly, the present application adopts a lower pressing ring fixedly installed on the lower side of the polisher and connected with the connecting ring on the moving arm, so that the polisher can drive the groove wheel to move along the track of the rectangular track through the wheel frame, and the groove wheel continuously presses the rectangular track during the movement, thereby realizing the dynamic pressing of the edge of the pressing plate, effectively replacing the pressing effect of the limiting baffle in this area, preventing the instantaneous reduction of pressing stress caused by mechanism displacement, avoiding the loosening or edge cracking of the polarizing plate stack during polishing, and ensuring the yield. BRIEF DESCRIPTION OF DRAWINGS

[0021] The present application will be further described below in combination with the drawings and examples.

[0022] Figure 1 is a schematic diagram of the overall structure of the present application.

[0023] Figure 2 is a schematic diagram of the structure of the electric cylinder, limiting baffle, pressing plate and polisher in the present application.

[0024] Figure 3 is a partial sectional view of the pressing plate, tapered column, rectangular track and cross bar in the present application.

[0025] Figure 4 is a schematic diagram of the structure of the polisher, pressing plate, moving block and connecting seat in the present application.

[0026] Figure 5 is a partial sectional view of the pressing plate, connecting seat, connecting rod and moving arm in the present application.

[0027] Figure 6 is a schematic diagram of the structure of the rotating arm, moving block, moving arm and wheel frame in the present application.

[0028] Figure 7It is a partial sectional view of the mobile arm, connecting ring, groove wheel and wheel carrier in the application.

[0029] In the figure: 1, sander; 2, workbench; 3, pressing plate; 4, pressing mechanism; 31, electric cylinder; 32, connecting assembly; 33, limiting bubble; 34, tapered column; 35, rectangular track; 41, connecting seat; 42, linkage assembly; 43, groove wheel; 321, crossbar; 322, screw rod; 421, rotating arm; 422, connecting rod; 423, moving block; 424, mobile arm; 425, wheel carrier; 426, roller; 427, limiting roller; 428, connecting ring; 429, lower pressing ring. DETAILED DESCRIPTION

[0030] The embodiments of the application are described in detail below. The embodiments described below are exemplary only, and are intended to explain the application, but are not to be understood as limiting the application. If specific techniques or conditions are not mentioned in the embodiments, the techniques or conditions described in the literature in the art or according to the product instructions are used.

[0031] Referring to Figure 1 and Figure 2 , a polarizing plate edging machine includes a movable sander 1, a workbench 2, and a pressing plate 3 placed on the upper part of the polarizing plate stack, the workbench 2 is also provided with a limiting mechanism for limiting the polarizing plate stack, and a pressing mechanism 4 for dynamically pressing the polarizing plate stack following the sander 1.

[0032] It should be noted that, as shown in Figure 1 , the sander 1 is connected to the workbench 2 through a numerical control track moving assembly in the prior art, the sander 1 is moved along the X, Y, Z axes of the workbench 2 through the driving of the numerical control track moving assembly, and then the moving track of the sander 1 is pre-set, so that the sander 1 can automatically move to the polishing position of the polarizing plate and move along the periphery of the polarizing plate, thereby performing one-time edge polishing operation on the edge of the polarizing plate.

[0033] Referring to Figure 1 , Figure 2 and Figure 3 , the limiting mechanism includes four electric cylinders 31 arranged around the polarizing plate stack, a limiting bubble 33 is arranged on the output end of the electric cylinder 31 through a connecting assembly 32, and a tapered column 34 is fixedly installed on the upper side of the pressing plate 3 and corresponds to and nests the limiting bubble 33.

[0034] Continuing to refer to Figure 1 , Figure 2 and Figure 3 , the connecting assembly 32 includes a crossbar 321 fixedly connected to the telescopic section of the electric cylinder 31, a screw rod 322 threadedly connected to the side away from the electric cylinder 31 of the crossbar 321, and the lower end of the screw rod 322 is fixedly connected with the limiting bubble 33.

[0035] The electric cylinder 31 in this embodiment adopts a common screw swing cylinder in the prior art, and its working principle is that when the piston moves linearly, it is converted into rotary motion through a screw pair, and finally the piston rod can rotate and stretch, so that the electric cylinder 31 can drive the horizontal rod 321 to move upwards, and then drive the horizontal rod 321 to rotate, thereby accommodating the movement of the polisher 1.

[0036] Referring to Figure 2 and Figure 3 , the inside of the limiting protrusion 33 is provided with a conical hole matched with the conical surface of the taper column 34, and the limiting protrusion 33 is nested and connected on the taper column 34 by moving down the conical hole, so that the pressing plate 3 is stably pushed down by the limiting protrusion 33 to press the polarizing sheet stack.

[0037] When the polarizing sheets stacked together need to be polished, the polarizing sheet stack is first placed on the designated position on the workbench 2 by the existing automatic feeding method, and then the pressing plate 3 matched with the specification of the polarizing sheet is automatically placed on the upper part of the polarizing sheet stack by the mechanical hand. Then the electric cylinder 31 drives the limiting protrusion 33 to move to the position above the corresponding taper column 34 through the horizontal rod 321 and the screw rod 322, and then the electric cylinder 31 drives the limiting protrusion 33 to move downward, so that the limiting protrusion 33 presses and nests on the outside of the corresponding taper column 34.

[0038] By nesting the conical hole of the limiting protrusion 33 on the taper column 34 fixed on the upper side of the pressing plate 3, on the one hand, the pressing force of the electric cylinder 31 can be applied to the pressing plate 3 through the taper column 34, so that the polarizing sheet stack is statically pressed and positioned by the pressing plate 3; on the other hand, through the nesting arrangement of the limiting protrusion 33 and the taper column 34, the horizontal positioning of the pressing plate 3 can be realized, preventing the pressing plate 3 from moving accidentally and causing the polarizing sheet stack to lose stability.

[0039] It is worth noting that due to the conical surface structure of the upper part of the taper column 34, the debris generated when the polisher 1 edges the polarizing sheet stack cannot adhere to the taper column 34, thereby ensuring that the limiting protrusion 33 and the taper column 34 are tightly connected, ensuring the stability of the connection, and the electric cylinder 31 is integrated with a pressure sensor and a feedback element inside, which can control the pressing force of the limiting protrusion 33 on the taper column 34 to be constant, ensuring that the pressing plate 3 can stably and statically press and position the polarizing sheet stack.

[0040] In this embodiment, the lower part of the pressing plate 3 is provided with a rubber pad, which can prevent the pressing plate 3 from damaging the uppermost polarizing sheet through the buffering of the rubber pad.

[0041] Referring to Figure 1 , Figure 2 , Figure 4 and Figure 5The pressing mechanism 4 includes a connecting seat 41 that is detachably installed on the upper side of the pressure plate 3 at the center position. A grooved wheel 43 is provided on the connecting seat 41 through a linkage component 42. The grooved wheel 43 is arranged along the upper edge of the pressure plate 3 and moves synchronously with the grinder 1.

[0042] See Figure 2 , Figure 4 , Figure 5 and Figure 6 The linkage component 42 includes a rotating arm 421 rotatably connected to the connecting seat 41. The rotating arm 421 is connected to a moving block 423 via several connecting rods 422. A moving arm 424 is horizontally slidably arranged inside the moving block 423. A wheel frame 425 is slidably arranged on the moving arm 424 along its length direction. The wheel frame 425 is rotatably connected to the grooved wheel 43. One end of the connecting rod 422 is hinged to the rotating arm 421, and the other end of the connecting rod 422 is hinged to the moving block 423. Several connecting rods 422 are combined to form a parallelogram structure.

[0043] See Figure 5 , Figure 6 and Figure 7 The end of the moving arm 424 away from the connecting seat 41 is fixedly connected to a connecting ring 428. The lower side of the grinder 1 is fixedly installed with a support arm for connecting with the connecting ring 428. The upper side of the connecting ring 428 has a raised structure, and the lower side of the pressing ring 429 has a concave structure that is nested and connected with the raised structure of the connecting ring 428.

[0044] See Figure 5 and Figure 6 A rectangular track 35 with arc-shaped corners is fixedly installed on the upper edge of the pressure plate 3. The upper part of the rectangular track 35 has a pointed structure, and the grooved wheel 43 has a V-shaped groove structure for moving along the track of the rectangular track 35.

[0045] When the limit caps 33 are all nested on the outer surface of the corresponding conical column 34, the limit caps 33 at the corresponding position of the grinder 1 are moved by moving upward and then deflecting the crossbar 321, so that the limit caps 33 make way for the movement of the grinder 1 and prevent interference.

[0046] Then, the grinder 1 is moved and the pressure ring 429 is moved to the upper part of the coaxial position of the connecting ring 428. Then, the grinder 1 is moved downward so that the lower part of the grinder 1 is inserted into the interior of the connecting ring 428, and the lower side of the pressure ring 429 is in contact with the upper side of the connecting ring 428. At this time, the protruding structure on the upper side of the connecting ring 428 is inserted into the concave structure on the lower side of the pressure ring 429, so that the grinder 1 can drive the connecting ring 428 to move synchronously through the pressure ring 429.

[0047] Then, the grinder 1 moves along the preset trajectory, so that the grinder 1 begins to grind the edges of the polarizer stack. At the same time, the grinder 1 drives the moving arm 424 to rotate through the connecting ring 428, so that the moving arm 424 drives the grooved wheel 43 to move along the trajectory of the rectangular track 35 through the wheel frame 425. The grinder 1 applies downward pressure to the lower pressure ring 429, so that the downward pressure of the grinder 1 is transmitted to the corresponding edge of the pressure plate 3 through the lower pressure ring 429, the connecting ring 428, the moving arm 424, the wheel frame 425, and the grooved wheel 43 in sequence.

[0048] As the grooved wheel 43 moves with the grinder 1, it continuously presses down on the rectangular track 35, achieving dynamic pressing on the edge of the pressure plate 3. This effectively replaces the clamping effect of the limit cap 33, which has already been moved out of place in this area, preventing the clamping stress from decreasing instantly due to the mechanism's relocation. This avoids the polarizer stack from loosening or cracking at the edges during the grinding process, ensuring a high yield rate.

[0049] It should be emphasized that the downward movement of the polisher 1 is set by those skilled in the art based on the height of the polarizer stack, so that the downward pressure applied by the polisher 1 to the grooved wheel 43 by the pressure ring 429 is close to the downward pressure of the limit cap 33 on the pressure plate 3. This achieves the effect of dynamic downward pressure of the grooved wheel 43 replacing static downward pressure of the limit cap 33. Furthermore, the horizontal limit of the pressure plate 3 by the unyielding limit cap 33 can prevent the rolling friction of the grooved wheel 43 from pushing the pressure plate 3 to deviate.

[0050] It should be noted that the wheel frame 425 is composed of an upper plate-like structure and a lower U-shaped structure that are rotatably connected. Therefore, when the moving arm 424 rotates, the moving arm 424 can drive the grooved wheel 43 to move on the rectangular track 35 through the wheel frame 425. Furthermore, due to the parallelogram-shaped connecting rod 422, the moving block 423 can be limited to maintain its posture. Thus, the moving arm 424 is kept horizontal when pressing down on the wheel frame 425 by the moving block 423, thereby enabling the downward pressure to be efficiently transmitted to the pressure plate 3. In addition, since the upper part of the rectangular track 35 has a pointed structure, the debris generated during edge grinding is not easily attached to the rectangular track 35, thereby keeping the contact part between the rectangular track 35 and the grooved wheel 43 clean and preventing the phenomenon of sudden changes in dynamic downward pressure.

[0051] It is worth noting that the included angle of the V-shaped groove of the grooved wheel 43 is greater than the included angle of the pointed structure of the rectangular track 35, so that when the grooved wheel 43 moves along the rectangular track 35, there is a gap between the side of the V-shaped groove and the rectangular track 35, thereby ensuring that the grooved wheel 43 can pass smoothly when it moves to the arc-shaped corner position of the rectangular track 35 and preventing jamming.

[0052] In this embodiment, the friction between the moving arm 424 and the moving block 423, and the friction between the rotating arm 421 and the connecting seat 41, ensure that the connecting ring 428 remains in the same position after the pressing ring 429 is disconnected from the connecting ring 428, thereby facilitating the reconnection of the pressing ring 429 and the connecting ring 428.

[0053] After the grinder 1 completes the edge grinding of the polarizer stack and moves to the initial position, the four electric cylinders 31 are controlled to simultaneously drive the limit caps 33 to move and make way. Then, the robot arm lifts the pressure plate 3 to the specified height. Then, the polarizer stack at the grinding position is replaced by the existing automatic feeding method, so as to carry out continuous edge grinding operation on the polarizer stack.

[0054] See Figure 4 , Figure 5 and Figure 6 The lower part of the connecting seat 41 has a stud structure. The connecting seat 41 is fixedly connected to the pressure plate 3 by screwing it in. This allows the connecting seat 41 to be quickly installed on the new pressure plate by simply replacing the pressure plate 3 with one that matches the size of the polarizer when grinding the edges of polarizers of different specifications. This achieves convenient adaptation, improves the applicability and flexibility of the equipment, and reduces the modification costs and time consumption caused by changing specifications.

[0055] See Figure 6 and Figure 7 The wheel frame 425 is rotatably equipped with rollers 426 and limiting rollers 427 that roll on the moving arm 424, so that the wheel frame 425 can move smoothly along the moving arm 424.

[0056] This invention achieves static pressing and horizontal limiting of the polarizer stack by setting a limiting cap 33 driven by an electric cylinder 31 nested with a conical column 34 on the pressure plate 3. At the same time, the grooved wheel 43, which can move synchronously with the grinder 1, rolls along the rectangular track 35 on the pressure plate 3. With the help of the connecting seat 41, rotating arm 421, connecting rod 422, moving arm 424 and wheel frame 425, the downward pressure of the grinder 1 is continuously transmitted to the edge of the pressure plate 3, forming dynamic pressing. Thus, the synergistic effect of static limiting and dynamic pressing is achieved during the grinding process, effectively preventing the polarizer from sliding or the edge from cracking due to sudden changes in the clamping force, and significantly improving the grinding accuracy and yield.

[0057] To overcome the defect of existing edge grinding machines where sudden changes in clamping force during positioning lead to a decrease in yield, this invention does not fundamentally change the original limiting structure. Instead, it creatively adds a dynamic following pressing structure consisting of a connecting seat 41, a linkage component 42, and a grooved wheel 43. Although this new structure increases manufacturing costs, it effectively guarantees the yield, making the long-term benefits far outweigh its manufacturing costs. Furthermore, by designing the connecting seat 41 to be detachably threaded from the pressure plate 3, this invention makes the newly added dynamic following pressing structure an independent, reusable standard module. When processing polarizers of different specifications, only the matching pressure plate 3 needs to be replaced, while the high-value dynamic pressing module can be retained and quickly installed onto the new pressure plate. This greatly improves the reusability of core components and effectively reduces the equipment modification and time costs caused by product changes, demonstrating high practicality.

[0058] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0059] Furthermore, the terms "first," "second," "number one," and "number two" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "number one," or "number two" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0060] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0061] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A polarizer edge grinding machine, comprising a movable grinder, a worktable, and a pressure plate placed on top of a polarizer stack, characterized in that, The worktable is also equipped with a limiting mechanism for limiting the polarizer stack, and a pressing mechanism for dynamically pressing down the polarizer stack following the polisher. The limiting mechanism includes four electric cylinders arranged around the polarizer stack. Limit caps are provided on the output end of the electric cylinders through a connecting component. Conical columns corresponding to and nested with the limit caps are fixedly installed on the upper side of the pressure plate. The pressing mechanism includes a connecting seat that can be detachably installed at the center of the upper side of the pressure plate. A grooved wheel is provided on the connecting seat through a linkage component. The grooved wheel is arranged along the upper edge of the pressure plate and moves synchronously with the grinder. The pressure plate is statically pressed down and horizontally stabilized by the nested connection of the limiting cap and the conical column. Then, the edge of the pressure plate is dynamically pressed by the grooved wheel that moves synchronously with the grinder. Thus, the pressure plate is used to maintain the stable positioning of the polarizer stack by means of static pressing, horizontal stabilization and dynamic pressing. The linkage component includes a rotating arm rotatably connected to the connecting seat, a moving block connected to the rotating arm via several connecting rods, a moving arm horizontally slidingly disposed inside the moving block, and a wheel frame rotatably disposed on the moving arm along its length direction, the wheel frame being rotatably connected to the grooved wheel. A connecting ring is fixedly connected to the end of the movable arm away from the connecting seat, and a pressure ring for connecting with the connecting ring is fixedly installed on the lower side of the grinder via a support arm.

2. The polarizer edge grinding machine according to claim 1, characterized in that, The connecting assembly includes a crossbar fixedly connected to the telescopic section of the electric cylinder, with a screw threadedly connected to the side of the crossbar away from the electric cylinder, and the lower end of the screw fixedly connected to a limit cap.

3. The polarizer edge grinding machine according to claim 1, characterized in that, The limiting cap has a conical hole inside that matches the conical surface of the conical column. The limiting cap moves down and nests onto the conical column through the conical hole, so that the pressure plate is stably pushed down by the limiting cap and presses down to limit the polarizer stack.

4. The polarizer edge grinding machine according to claim 1, characterized in that, The lower part of the connector has a stud structure, and the connector is fixedly connected to the pressure plate by screwing in the thread.

5. A polarizer edge grinding machine according to claim 1, characterized in that, One end of several connecting rods is hinged to a rotating arm, and the other end of the connecting rod is hinged to a moving block. The several connecting rods are combined to form a parallelogram structure.

6. The polarizer edge grinding machine according to claim 1, characterized in that, The wheel frame is rotatably equipped with rollers and limiting rollers that roll on the moving arm, so that the wheel frame can move smoothly along the moving arm.

7. A polarizer edge grinding machine according to claim 1, characterized in that, The upper side of the connecting ring has a raised structure, and the lower side of the pressure ring has a concave structure that is nested and connected with the raised structure of the connecting ring.

8. A polarizer edge grinding machine according to claim 1, characterized in that, The upper edge of the pressure plate is fixedly installed with a rectangular track with arc-shaped corners. The upper part of the rectangular track has a pointed structure, and the grooved wheel has a V-shaped groove structure and is used to move along the track of the rectangular track.

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