Anti-deviation polarizing sheet attaching device and attaching method

Abstract

The application relates to the technical field of display screen production, in particular to a polaroid attaching device and method capable of preventing deviation, which comprises a rack, a supporting plate arranged on the rack, and side plates detachably arranged on the two sides of the supporting plate; a moving frame arranged on the side plates, a roller rotatably arranged on the moving frame; a chain pressure applying assembly arranged in two groups and connected with the side plates, the chain pressure applying assembly comprising a plurality of pressure applying plates arranged in a straight line, one end of each pressure applying plate being provided with a first recess, the other end being provided with a second recess, and the first recess and the second recess on two adjacent pressure applying plates being matched; a supporting structure connecting the moving frame and the pressure applying plates, the supporting structure being used for supporting the pressure applying plates; and an elastic structure arranged on the moving frame, the elastic structure being capable of generating a downward pressure on the pressure applying plates when the supporting structure releases the pressure applying plates, so that deviation is prevented.

Description

Technical Field

[0001] This invention relates to the field of display screen manufacturing technology, specifically to a polarizer attachment device and method for preventing misalignment. Background Technology

[0002] On automated production lines for LCD modules, polarizer attachment has always been considered a critical process that determines optical yield and reliability. As smartphones, automotive devices, and tablets continue to evolve towards narrower bezels, larger sizes, and thinner designs, the area of ​​the polarizer itself has increased while its thickness has decreased to the hundreds of micrometers level. This has resulted in a significant reduction in its in-plane stiffness, leading to a weakening of its resistance to shear forces during roll bonding.

[0003] In traditional devices, when applying the front-end area, a narrow line contact is initially formed between the pressure roller and the screen assembly. The downward normal force and the forward tangential force work together to push the polarizer in the direction the pressure roller is moving. However, as the rolling continues, the front area remains in a partially fixed state, lacking sufficient constraint. Even when a fixing device is used, the polarizer's low in-plane stiffness causes deformation during rolling, resulting in a typical "progressive offset" defect. This defect becomes more pronounced as the application length increases. While it can be absorbed by subsequent visual loop closure in small and medium-sized products, it directly causes light leakage at the display edge, mura, and subsequent edge chipping in products larger than 7 inches, becoming a long-standing bottleneck in the industry. Existing technologies attempt to alleviate slippage and deformation by reducing the pressure roller speed, increasing vacuum, or adding a pre-pressure mechanism, but these all bring new problems such as reduced cycle time, increased energy consumption, and structural complexity, and cannot fundamentally solve the contradiction that "the front end has already shifted or deformed when the back end is applied." Summary of the Invention

[0004] The purpose of this invention is to provide a polarizer attachment device and method for preventing misalignment, 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:

[0006] A polarizer attachment device for preventing misalignment, comprising:

[0007] A frame, on which a support plate is provided, and side plates are detachably installed on both sides of the support plate;

[0008] A movable frame is mounted on the side plate, and rollers are rotatably mounted on the movable frame;

[0009] The chain pressing assembly is provided with two groups and is connected with the side plate, and the chain pressing assembly comprises a plurality of groups of pressing plates arranged in a straight line, one end of the pressing plate is provided with a first recess, the other end is provided with a second recess, and the first recess and the second recess on the adjacent two groups of pressing plates are matched;

[0010] The supporting structure is connected with the moving frame and the pressing plate, and is used for supporting the pressing plate;

[0011] The elastic structure is arranged on the moving frame, and the elastic structure can generate a downward pressure on the pressing plate when the supporting structure releases the pressing plate.

[0012] As a further scheme of the present application, the chain pressing assembly further comprises a guide sleeve fixedly connected with the pressing plate and a vertical shaft connected with the side plate through a connecting frame, and the vertical shaft is slidably sleeved with the guide sleeve;

[0013] The vertical shaft is provided with a limiting groove in the length direction, and a limiting block is arranged on the inner wall of the guide sleeve, and the limiting block can roll in the limiting groove.

[0014] As a further scheme of the present application, the supporting structure comprises an abutting plate fixedly installed on the side of the pressing plate and a supporting shaft rotatably installed on the moving frame, and when the supporting shaft abuts against the lower surface of the abutting plate, the lower surface of the pressing plate is higher than the highest point of the roller.

[0015] As a further scheme of the present application, the elastic structure comprises a sliding groove arranged on the moving frame, a support is slidably installed in the sliding groove, one end of the support is rotatably installed with a first abutting wheel, and the first abutting wheel is matched with the upper surface of the abutting plate.

[0016] The elastic structure further comprises a cylindrical spring arranged in the sliding groove, one end of the cylindrical spring is connected with the bottom wall of the sliding groove, and the other end is connected with the support.

[0017] As a further scheme of the present application, a telescopic structure fixedly connected with the moving frame and a guide plate fixedly connected with the guide sleeve are further included, one end of the guide plate towards the telescopic structure is provided with an inclined surface, and when the moving frame moves reversely, the telescopic structure can cooperate with the inclined surface to lift the pressing plate upward.

[0018] As a further scheme of the present application, the telescopic structure comprises an electric telescopic rod fixedly installed on the moving frame, and a second abutting shaft is connected with the action end of the electric telescopic rod;

[0019] When the electric telescopic rod drives the second abutting shaft to move towards the guide plate, the second abutting shaft can abut against the inclined surface during movement; when the electric telescopic rod drives the second abutting shaft to move away from the guide plate, the second abutting shaft can be dislocated from the guide plate.

[0020] As a further scheme of the present application: further comprising a positioning assembly, the positioning assembly comprising:

[0021] A bottom plate fixedly connected with the supporting plate, a first sliding block capable of sliding along the length direction of the bottom plate being arranged on the bottom plate, a first limiting shaft penetrating through the supporting plate being arranged on the first sliding block;

[0022] A second sliding block capable of sliding along the width direction of the bottom plate, a second limiting shaft penetrating through the supporting plate being arranged on the second sliding block;

[0023] A pneumatic control structure arranged on the bottom plate, the pneumatic control structure being capable of sequentially driving the second limiting shaft and the first limiting shaft to move.

[0024] As a further scheme of the present application: the pneumatic control structure comprises a double-head cylinder fixedly installed on the bottom plate, a transverse plate being connected to the action end of the double-head cylinder, the transverse plate being connected with the second sliding block through a guide set;

[0025] The pneumatic control structure further comprises a connecting plate fixedly connected with the first sliding block and a narrow connecting portion arranged on the transverse plate, the narrow connecting portion being capable of sliding relative to the connecting plate.

[0026] As a further scheme of the present application: the guide set comprises an embedded shaft rotationally connected with the second sliding block and a guide groove arranged on the transverse plate, the embedded shaft being capable of rolling in the guide groove;

[0027] The guide groove comprises an inclined groove and a horizontal groove arranged on the transverse plate, when the embedded shaft rolls in the inclined groove, the second sliding block can move towards the middle part of the supporting plate.

[0028] A method for attaching a polarizing sheet by using the polarizing sheet attachment device capable of preventing deviation, comprising the following steps:

[0029] Step one: the moving frame is located at the end of the stroke, at this time the pressing plates are all in the state of being jacked up;

[0030] Step two: the screen to be attached is placed on the supporting plate, and the positioning assembly is used to position the screen, then one end of the polarizing sheet is aligned with the end of the screen;

[0031] Step three: the moving frame is transversely moved, and the roller is used to roll and press the polarizing sheet;

[0032] Step four, with the rolling, the supporting structure can release the pressing plate on the upper part of the completed polarizing plate, which can be pressed on both sides of the polarizing plate under the action of the elastic structure;

[0033] Step five, when the attachment of the polarizing plate is completed, the moving frame moves reversely, at this time the telescopic structure cooperates with the guide plate to lift the pressing plate one by one upward;

[0034] Step six, repeat the above steps one to five.

[0035] Compared with the prior art, the beneficial effects of the present application are:

[0036] In the process of attaching the polarizing plate, when the roller completes the rolling of the polarizing plate, the pressing plate located at the rear part of the roller movement direction can be moved downward to be attached with the side of the polarizing plate, so as to realize the continuous fixation of the two sides of the polarizing plate along the length direction, prevent the local deformation or deviation of the polarizing plate in the process of attachment, avoid error accumulation, and improve the product quality;

[0037] By setting the positioning assembly, the relative two sides of the screen can be positioned and fixed in turn, so that the screen has higher position accuracy before the polarizing plate is attached, and the stability of the screen in the attachment process is ensured, and the attachment precision of the polarizing plate is improved. BRIEF DESCRIPTION OF DRAWINGS

[0038] Figure 1 Structure schematic view of an embodiment of the polarizing plate attachment device for preventing deviation.

[0039] Figure 2 For Figure 1 Structure enlarged view of A in the middle.

[0040] Figure 3 Structure schematic view of an embodiment of the polarizing plate attachment device for preventing deviation after the rack is removed.

[0041] Figure 4 Structure schematic view of another angle of an embodiment of the polarizing plate attachment device for preventing deviation after the rack is removed.

[0042] Figure 5 Structure enlarged view of the positioning assembly in an embodiment of the polarizing plate attachment device for preventing deviation.

[0043] Figure 6 Structure schematic view of the elastic structure and the telescopic structure in an embodiment of the polarizing plate attachment device for preventing deviation.

[0044] Figure 7An exploded view of the structure of the interlocking pressure applying assembly in one embodiment of the anti-deviation polarizing plate attaching device.

[0045] Figure 8 A position state diagram of the support shaft and the first abutting wheel during the attaching process in one embodiment of the anti-deviation polarizing plate attaching device.

[0046] Figure 9 A structure diagram of the support shaft and the second abutting shaft when the roller reverses in one embodiment of the anti-deviation polarizing plate attaching device.

[0047] In the figure: 1, frame; 2, support plate; 3, bottom plate; 4, side plate; 5, linear drive module; 6, moving frame; 601, sliding groove; 7, roller; 8, cylindrical spring; 9, support; 10, first abutting wheel; 11, electric telescopic rod; 12, second abutting shaft; 13, pressure plate; 1301, first recess; 1302, second recess; 14, guide sleeve; 1401, limiting block; 15, vertical shaft; 1501, limiting groove; 16, connecting frame; 17, abutting plate; 18, guide plate; 1801, inclined surface; 19, support shaft; 20, double-head air cylinder; 21, transverse plate; 2101, inclined groove; 2102, horizontal groove; 2103, narrow connecting part; 22, connecting plate; 2201, first sliding block; 2202, first limiting shaft; 23, second sliding block; 2301, fitting shaft; 2302, second limiting shaft. DETAILED DESCRIPTION

[0048] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0049] In addition, the elements in the present application are referred to as "fixed to" or "provided on" another element, which can be directly on another element or can have a middle element. When an element is considered to be "connected" to another element, it can be directly connected to another element or can have a middle element. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation.

[0050] Please refer to Figures 1-9 In the embodiments of the present application, an anti-deviation polarizing plate attaching device includes a frame 1, a moving frame 6, an interlocking pressure applying assembly, a support structure and an elastic structure.

[0051] The rack 1 is provided with a supporting plate 2, and both sides of the supporting plate 2 are detachably provided with side plates 4;

[0052] The moving frame 6 is arranged on the side plate 4, and specifically, the moving frame 6 is connected with a linear driving module 5 arranged on the side plate 4, and a roller 7 is rotatably arranged on the moving frame 6;

[0053] The interlocking pressure applying assembly is provided with two groups and is connected with the side plate 4, and the interlocking pressure applying assembly comprises a plurality of groups of pressure applying plates 13 arranged in a straight line, one end of the pressure applying plate 13 is provided with a first recess 1301, and the other end is provided with a second recess 1302, and the first recess 1301 and the second recess 1302 on the pressure applying plates 13 of adjacent two groups are adapted.

[0054] In the embodiment, the matching state of the pressure applying plate 13 is as follows:

[0055] For the convenience of understanding, refer to Figure 7 The pressure applying plate 13 in the figure is labeled as a first pressure applying plate a, a second pressure applying plate b and a third pressure applying plate c from left to right, when the first pressure applying plate a is in the state of being lifted up, the second recess 1302 on the right side of the first pressure applying plate a can be in the abutting state with the first recess 1301 on the left side of the second pressure applying plate b, so that the second pressure applying plate b is also in the state of being lifted up, and the second recess 1302 on the second pressure applying plate b cooperates with the first recess 1301 on the third pressure applying plate c, so that the third pressure applying plate c is also in the state of being lifted up, and so on, when one end of the plurality of groups of pressure applying plates 13 arranged in a straight line is lifted up, the pressure applying plates 13 located in the advancing direction of the roller 7 will be in the state of being lifted up, at this time, the screen and the polarizing sheet to be attached can be more conveniently placed between the roller 7 and the supporting plate 2, and the action is prepared for the subsequent attachment of the polarizing sheet;

[0056] When the screen is placed on the supporting plate 2 and fixed, and then one end of the polarizing plate is aligned with the screen, the linear drive module 5 drives the moving frame 6 connected thereto to move, and then the roller 7 can act on the polarizing plate to attach the polarizing plate to the screen. During the movement of the moving frame 6, the supporting structure can release the pressing plates 13 one by one. Specifically, when the supporting structure releases the first pressing plate a, the elastic structure can generate a downward pressure on the first pressing plate a, so that the first pressing plate a can abut and press the polarizing plate, and the second pressing plate b is still in the state of being lifted, so that the subsequent pressing plates 13 will also be in the state of being lifted. Based on this setting, when the roller 7 completes the rolling of the polarizing plate, the pressing plates 13 located at the rear of the movement direction of the roller 7 can move downward to be attached to the side of the polarizing plate, so as to fix the two sides of the polarizing plate which has been attached, preventing the partial deviation of the polarizing plate from being enlarged during the attachment process.

[0057] Please refer to Figures 7-9 The interlocking pressing assembly further comprises a guide sleeve 14 fixedly connected with the pressing plate 13 and a vertical shaft 15 connected with the side plate 4 through a connecting frame 16, and the vertical shaft 15 is slidably sleeved with the guide sleeve 14.

[0058] The vertical shaft 15 is provided with a limiting groove 1501 along the length direction thereof, and the inner wall of the guide sleeve 14 is provided with a limiting block 1401 which can roll in the limiting groove 1501.

[0059] In this embodiment, the pressing plate 13 can drive the guide sleeve 14 to slide relative to the vertical shaft 15 during the lifting process, and under the action of the limiting block 1401 and the limiting groove 1501, the direction of the pressing plate 13 can be kept constant, thereby ensuring that the multiple pressing plates 13 can be arranged in a row, preventing the pressing plate 13 from rotating during the lifting process and causing misalignment with the side of the polarizing plate, resulting in insufficient pressure on the polarizing plate and causing deviation of the polarizing plate.

[0060] The supporting structure connects the moving frame 6 and the pressing plate 13, and is used for supporting the pressing plate 13. The supporting structure comprises an abutting plate 17 fixedly installed at the side of the pressing plate 13 and a supporting shaft 19 rotatably installed on the moving frame 6. When the supporting shaft 19 abuts the lower surface of the abutting plate 17, the lower surface of the pressing plate 13 is higher than the highest point of the roller 7.

[0061] In this embodiment, please refer to Figure 8, the support shaft 19 abuts against the abutting plate 17 on the side of the first pressing plate a, so that the first pressing plate a is in a state of being lifted up, and the pressing plates 13 along the movement direction of the roller 7 are all in a state of being lifted up, and as the roller 7 rolls the polarizing sheet, the support shaft 19 will also move horizontally with the moving frame 6, so that when the support shaft 19 is separated from the abutting plate 17 on the first pressing plate a, the first pressing plate a can be pressed down under the action of the elastic structure, so as to act on the side of the polarizing sheet which has been attached and fix the polarizing sheet which has been attached, and when the support shaft 19 is separated from the abutting plate 17 on the first pressing plate a, the support shaft 19 can be switched to abut against the abutting plate 17 on the side of the second pressing plate b, so that the second pressing plate b and the pressing plates 13 along the movement direction of the roller 7 are all in a state of being lifted up, so that the pressing plates 13 can complete the rolling and effectively fix the side of the attached polarizing sheet as the rolling proceeds, preventing the local deviation of the polarizing sheet from accumulating and increasing the deviation of the polarizing sheet as the rolling proceeds.

[0062] Please refer to Figures 6-8 The elastic structure is arranged on the moving frame 6, and the elastic structure can generate a downward pressure on the pressing plate 13 when the supporting structure releases the pressing plate 13.

[0063] The elastic structure comprises a sliding groove 601 arranged on the moving frame 6, a support 9 is slidingly arranged in the sliding groove 601, one end of the support 9 is rotatably arranged with a first abutting wheel 10, and the first abutting wheel 10 abuts against the upper surface of the abutting plate 17.

[0064] The elastic structure further comprises a cylindrical spring 8 arranged in the sliding groove 601, one end of the cylindrical spring 8 is connected with the bottom wall of the sliding groove 601, and the other end is connected with the support 9.

[0065] In the initial state, the cylindrical spring 8 is in a stretched state, so that the first abutting wheel 10 has a downward pulling tendency through the support 9, the first abutting wheel 10 acts on the abutting plate 17 to generate a downward pressure on the pressing plate 13, so as to fix the polarizing sheet.

[0066] Specifically, when the support shaft 19 is separated from the abutting plate 17 on the first pressing plate a and abuts against the abutting plate 17 on the second pressing plate b, the first abutting wheel 10 can abut against the upper part of the abutting plate 17 on the first pressing plate a, thereby generating a downward pressure on the first pressing plate a.

[0067] It should be noted that the length of the pressing plate 13 at the first end is relatively long, and the support shaft 19 and the first abutting wheel 10 can both abut against the abutting plate 17 on the pressing plate 13.

[0068] Further, in the embodiment, the cylindrical spring 8 is only provided with one set, and as the moving frame 6 moves, the first abutting wheel 10 can act on the abutting plate 17 on the pressing plate 13 in turn, and when the first abutting wheel 10 acts on the abutting plate 17 on the third pressing plate c, the first recess 1301 and the second recess 1302 on the pressing plate 13 can make the first pressing plate a and the second pressing plate b both be able to generate a downward pressure, so that the completed attached polarizing plate side is generated a fixed effect.

[0069] Compared with the fact that each set of pressing plates 13 is provided with a set of springs, in the initial state, the pressure borne by the support shaft 19 is smaller.

[0070] Please refer to Figures 6-9 , the anti-offset polarizing plate attaching device further comprises a telescopic structure fixedly connected with the moving frame 6 and a guide plate 18 fixedly connected with the guide sleeve 14, and an inclined surface 1801 is arranged at one end of the guide plate 18 facing the telescopic structure, and when the moving frame 6 moves reversely, the telescopic structure can cooperate with the inclined surface 1801 to lift the pressing plate 13 upward;

[0071] The telescopic structure comprises an electric telescopic rod 11 fixedly installed on the moving frame 6, and a second abutting shaft 12 is connected to the action end of the electric telescopic rod 11;

[0072] When the electric telescopic rod 11 drives the second abutting shaft 12 to move towards the guide plate 18, the second abutting shaft 12 can abut against the inclined surface 1801 during movement, and when the electric telescopic rod 11 drives the second abutting shaft 12 to move away from the guide plate 18, the second abutting shaft 12 can be dislocated from the guide plate 18.

[0073] In the process that the roller 7 moves to roll the polaroid, the electric telescopic rod 11 drives the second abutting shaft 12 to be in the state of being out of position with the guide plate 18, so that in the process of attaching the polaroid, the second abutting shaft 12 and the guide plate 18 do not interact with each other, and when the roller 7 completes the rolling and reverses the movement, the electric telescopic rod 11 is in the state of driving the second abutting shaft 12 to move towards the guide plate 18, so that in the process that the roller 7 reverses the movement, the second abutting shaft 12 can abut against the inclined surface 1801, and under the cooperation of the two, the guide plate 18 moves upwards to drive the pressing plate 13 to move upwards, and when the second abutting shaft 12 moves to the end of the inclined surface 1801, the supporting shaft 19 can just move to the lower part of the abutting plate 17 on the side of the pressing plate 13 in front of the movement direction of the roller 7, so as to lift the pressing plate 13 upwards, that is, in the process that the roller 7 reverses the movement, the pressing plate 13 can be lifted upwards one by one in turn, so that when the roller 7 moves to the stroke end, the pressing plate 13 is in the lifted state, thereby facilitating the subsequent continuous operation.

[0074] Please refer to Figures 4-5 , the anti-deviation polaroid attaching device further comprises a positioning assembly, the positioning assembly comprises:

[0075] A bottom plate 3 fixedly connected with the supporting plate 2, a first sliding block 2201 capable of sliding along the length direction of the bottom plate 3 is arranged on the bottom plate 3, and a first limiting shaft 2202 penetrating through the supporting plate 2 is arranged on the first sliding block 2201;

[0076] A second sliding block 23 capable of sliding along the width direction of the bottom plate 3, a second limiting shaft 2302 penetrating through the supporting plate 2 is arranged on the second sliding block 23;

[0077] A pneumatic control structure arranged on the bottom plate 3, the pneumatic control structure can drive the second limiting shaft 2302 and the first limiting shaft 2202 to move in turn, the pneumatic control structure comprises a double-head pneumatic cylinder 20 fixedly installed on the bottom plate 3, a transverse plate 21 connected to the action end of the double-head pneumatic cylinder 20, and the transverse plate 21 is connected with the second sliding block 23 through a guide set;

[0078] The pneumatic control structure further comprises a connecting plate 22 fixedly connected with the first sliding block 2201 and a narrow connecting part 2103 arranged on the transverse plate 21, and the narrow connecting part 2103 can slide relative to the connecting plate 22;

[0079] The guide set comprises an embedded shaft 2301 rotationally connected with the second sliding block 23 and a guide groove arranged on the transverse plate 21, and the embedded shaft 2301 can roll in the guide groove;

[0080] The guide groove comprises an inclined groove 2101 and a horizontal groove 2102 arranged on the transverse plate 21, and the second sliding block 23 can move towards the middle of the supporting plate 2 when the embedded shaft 2301 rolls in the inclined groove 2101.

[0081] In the initial state, the first limiting shaft 2202 and the second limiting shaft 2302 are away from each other, and during the operation of the double-head cylinder 20, the two groups of transverse plates 21 can move close to each other, at this time, the embedded shaft 2301 can move along the inclined groove 2101, so that the two groups of second limiting shafts 2302 move close to each other, and the embedded shaft 2301 moves into the horizontal groove 2102, and during this process, the connecting plate 22 slides relative to the narrow connecting part 2103, and when the embedded shaft 2301 moves into the horizontal groove 2102, the distance between the two groups of second limiting shafts 2302 is constant, and the narrow connecting part 2103 is in abutment with the connecting plate 22, so that during the continuous movement of the double-head cylinder 20, the two groups of first limiting shafts 2202 also move close to each other, thereby fixing the other two sides of the screen, and realizing the positioning and fixing of the screen.

[0082] Based on the above arrangement, the two opposite sides of the screen can be sequentially positioned and fixed, so that the screen has higher position accuracy before the polarizing sheet is attached, and the stability of the screen during the attachment process is ensured.

[0083] As an embodiment of the present application, a method for attaching a polarizing sheet using the anti-offset polarizing sheet attachment device is also provided, comprising the following steps:

[0084] Step one: the moving frame 6 is located at the end of the stroke, at this time, the pressing plates 13 are in the state of being lifted;

[0085] Step two: the screen to be attached is placed on the supporting plate 2, and the positioning assembly is used to position it, and then one end of the polarizing sheet is aligned with the end of the screen;

[0086] Step three: the moving frame 6 moves transversely, and the roller 7 is used to roll and press the polarizing sheet;

[0087] Step four: as the rolling proceeds, the supporting structure can release the pressing plate 13 on the upper part of the polarizing sheet which has completed rolling, and the pressing plate 13 can press the two sides of the polarizing sheet under the action of the elastic structure;

[0088] Step five: when the attachment of the polarizing sheet is completed, the moving frame 6 moves reversely, at this time, the telescopic structure cooperates with the guide plate 18 to lift the pressing plates 13 one by one;

[0089] Step six, repeat steps one through five above.

[0090] It will be apparent to those skilled in the art that the application is not limited to the details of the foregoing exemplary embodiments and that the present application can be carried out in other specific forms without departing from the spirit or essential characteristics of the application. The foregoing embodiments are therefore to be considered in all respects as illustrative only and not restrictive, the scope of the application being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. No limitation is intended to the effect that any recited claim must include any particular element or combine any particular elements listed in that claim.

[0091] Furthermore, it should be understood that although the description above refers to particular embodiments, the description may, of course, be used in other combinations of components and elements. The depictions of the embodiments in the description above are intended to be illustrative, rather than restrictive. Changes can be made by those of ordinary skill in the art and changes are intended to be encompassed by principles of the present application. Numerous other changes can be made that will be readily apparent to one of ordinary skill in the art, and the present application is not to be limited by the principles of the present application.

Claims

1. A polarizer attachment device for preventing misalignment, characterized in that, The utility model relates to a kind of continuous pressure assembly and positioning assembly, including: Rack, which is provided with a supporting plate, and both sides of the supporting plate are detachably mounted with side plates; Moving frame, which is provided on the side plate, and a roller is rotatably mounted on the moving frame; Interlocking pressure assembly, which is provided with two groups and is connected with the side plate, and the interlocking pressure assembly includes multiple groups of pressure plates arranged in a straight line, one end of the pressure plate is provided with a first recess, the other end is provided with a second recess, and the first recess and the second recess on the adjacent two groups of pressure plates are adapted; Supporting structure, which connects the moving frame and the pressure plate, and the supporting structure is used to support the pressure plate; Elastic structure, which is provided on the moving frame, and the elastic structure can generate a downward pressure on the pressure plate when the supporting structure releases the pressure plate; The supporting structure includes an abutment plate fixedly mounted on the side of the pressure plate and a support shaft rotatably mounted on the moving frame, and when the support shaft abuts the lower surface of the abutment plate, the lower surface of the pressure plate is higher than the highest point of the roller; The elastic structure includes a sliding groove provided on the moving frame, a bracket is slidably mounted in the sliding groove, a first abutment wheel is rotatably mounted at one end of the bracket, and the first abutment wheel abuts and adapts to the upper surface of the abutment plate; The elastic structure further includes a cylindrical spring provided in the sliding groove, one end of the cylindrical spring is connected with the bottom wall of the sliding groove, and the other end is connected with the bracket.

2. The anti-offset polarizing sheet attaching device according to claim 1, wherein The interlocking pressure assembly further includes a guide sleeve fixedly connected with the pressure plate and a vertical shaft connected with the side plate through a connecting frame, and the vertical shaft is slidably fitted with the guide sleeve; The vertical shaft is provided with a limiting groove along its length direction, and a limiting block is provided on the inner wall of the guide sleeve, and the limiting block can roll in the limiting groove.

3. The anti-skewing polarizing sheet attaching device according to claim 2, wherein It further includes a telescopic structure fixedly connected with the moving frame and a guide plate fixedly connected with the guide sleeve, and an inclined surface is provided at one end of the guide plate towards the telescopic structure, and when the moving frame moves reversely, the telescopic structure can cooperate with the inclined surface to lift the pressure plate upward.

4. The anti-skewing polarizing sheet attaching device according to claim 3, wherein The telescopic structure includes an electric telescopic rod fixedly mounted on the moving frame, and a second abutment shaft is connected to the action end of the electric telescopic rod; When the electric telescopic rod drives the second abutment shaft to move towards the guide plate, the second abutment shaft can abut the inclined surface during movement, and when the electric telescopic rod drives the second abutment shaft to move away from the guide plate, the second abutment shaft can be dislocated from the guide plate.

5. The anti-skewing polarizing sheet attaching device according to claim 1, wherein It further includes a positioning assembly, which includes: A bottom plate fixedly connected with the supporting plate, the bottom plate is provided with a first sliding block capable of sliding along its length direction, and the first sliding block is provided with a first limiting shaft penetrating through the supporting plate; A second sliding block capable of sliding along the width direction of the bottom plate, and the second sliding block is provided with a second limiting shaft penetrating through the supporting plate; A pneumatic control structure provided on the bottom plate, and the pneumatic control structure can drive the second limiting shaft and the first limiting shaft to move in sequence.

6. The anti-skewing polarizing sheet attaching device according to claim 5, wherein The pneumatic control structure comprises a double-head cylinder fixedly installed on the bottom plate, a horizontal moving plate connected to the action end of the double-head cylinder, and the horizontal moving plate connected with the second sliding block through a guide set; The pneumatic control structure further comprises a connecting plate fixedly connected with the first sliding block and a narrow connecting part arranged on the horizontal moving plate, and the narrow connecting part can slide relative to the connecting plate.

7. The anti-skewing polarizing sheet attaching device according to claim 6, wherein The guide set comprises an embedded shaft rotationally connected with the second sliding block and a guide groove arranged on the horizontal moving plate, and the embedded shaft can roll in the guide groove; The guide groove comprises an inclined groove and a horizontal groove arranged on the horizontal moving plate, and when the embedded shaft rolls in the inclined groove, the second sliding block can move towards the middle part of the supporting plate.

8. A method of attaching a polarizing sheet using the polarizing sheet attachment apparatus according to any one of claims 1 to 7, characterized by, The method comprises the following steps: Step one, the moving frame is located at the end of the stroke, at this time the pressing plates are all in the state of being lifted up; Step two, the screen to be attached is placed on the supporting plate and positioned by the positioning assembly, and then one end of the polarizing sheet is aligned with the end of the screen; Step three, the moving frame moves horizontally, and the polarizing sheet is rolled by the roller; Step four, as the rolling proceeds, the supporting structure can release the pressing plate on the upper part of the polarizing sheet after rolling, and the pressing plate can press the two sides of the polarizing sheet under the action of the elastic structure; Step five, when the attachment of the polarizing sheet is completed, the moving frame moves reversely, at this time the extension structure cooperates with the guide plate to lift up the pressing plates one by one; Step six, the steps one to five are repeated.

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