A liquid crystal display screen polarizing plate attaching machine and an attaching process thereof

Abstract

The application relates to the technical field of polaroid attaching, and discloses a liquid crystal display screen polaroid attaching machine and an attaching process thereof, which comprises a base, a first supporting column fixedly connected to the top of the base, a second supporting column fixedly connected to the top of the base, an outer shell fixedly connected to the top of the base, an observation window fixedly connected to the front end of the outer shell, a pushing assembly fixedly connected to the top of the second supporting column, and a film attaching mechanism fixedly connected to the inner wall of the outer shell. Through the film attaching mechanism, synchronous attaching operation of the upper and lower polaroids of the liquid crystal display screen can be realized. When the display screen is pushed to the processing area, the upper and lower groups of vacuum adsorption plates can be in contact with the surface of the display screen synchronously, single-side partial attaching and turning operation as in the prior art is not needed, the attaching period is greatly shortened, the processing efficiency is improved, the position dislocation problem of the polaroids caused by secondary positioning is avoided, and the yield rate during production is ensured.

Description

Technical Field

[0001] This invention relates to the field of polarizer attachment technology, specifically to a liquid crystal display screen polarizer attachment machine and its attachment process. Background Technology

[0002] A polarizer is an optical thin film composed of multiple layers of polymer materials that generates polarized light. It converts unpolarized natural light into polarized light, allowing light rays perpendicular to the electric field to pass through. This enables the liquid crystal display panel to display images correctly, making it an essential component for LCD imaging. In the later stages of LCD manufacturing, the polarizer needs to be attached to the LCD substrate, which already has a flexible circuit board attached.

[0003] Patent application CN202411513058.6 discloses a liquid crystal display screen polarizer attachment machine, including a fixed base, a movable groove on the upper wall of the fixed base, a substrate placement groove on the bottom wall of the movable groove, a movable seat slidably disposed in the movable groove, a polarizer peeling assembly disposed in the movable seat, a polarizer placement assembly disposed on the upper wall of the movable seat, a linkage assembly on the polarizer peeling assembly and the movable seat, an automatic attachment assembly at the front end of the movable seat, and a movable assembly between the movable seat and the fixed base. This equipment has a simple structure, automatically completes the peeling of the polarizer without the need for a robotic arm and sensors, reduces damage to the polarizer caused by manual labor, and cleverly utilizes a sliding docking rail to more conveniently attach the polarizer to the liquid crystal display screen substrate.

[0004] When using existing equipment, single-sided, multi-stage bonding is often employed. This not only results in a cumbersome operation process and low bonding efficiency, but also makes it easy for the bonding positions of the polarizers on both sides to be misaligned due to deviations in the secondary positioning reference. This is not conducive to ensuring the consistency of bonding accuracy during mass production. The additional flipping and positioning processes increase the product defect rate and raise production costs. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a liquid crystal display screen polarizer attachment machine and its attachment process, thereby solving the problems mentioned in the background section.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A liquid crystal display screen polarizer attachment machine, comprising a base, a first support column fixedly connected to the top of the base, a second support column fixedly connected to the top of the base, a housing fixedly connected to the top of the base, an observation window fixedly connected to the front end of the housing, a pushing component fixedly connected to the top of the second support column, and a film attaching mechanism fixedly connected to the inner wall of the housing;

[0007] The film application mechanism includes:

[0008] The second moving device is fixedly connected to the inner wall of the outer shell. A telescopic device is fixedly connected to the inner wall of the moving end of the second moving device. A base plate is fixedly connected to the bottom of the telescopic device. A connecting frame is fixedly connected to the bottom of the base plate. First connecting columns are fixedly connected to the inner sides of both ends of the bottom of the connecting frame. The outer walls of the first connecting columns are rotatably connected to the bottom assembly via bearings. A linear motor is installed inside the second moving device to control the horizontal position of the bottom assembly, while the telescopic device controls the height of the bottom assembly. By setting up a film-applying mechanism, the synchronous application of polarizers on the upper and lower sides of the LCD screen can be achieved. When the screen is pushed to the processing area, the upper and lower sets of vacuum adsorption plates can simultaneously contact the surface of the screen, eliminating the need for single-sided, multi-stage application and flipping operations as in existing technologies. This significantly shortens the application cycle, improves processing efficiency, and avoids the problem of polarizer misalignment caused by secondary positioning, ensuring a high yield rate during production.

[0009] According to the above technical solution, a first outer frame is fixedly connected to the top of the first support column, and a drive wheel is rotatably connected inside the first outer frame through a bearing. The first outer frame has a transmission gear set driven by a servo motor, which is connected to all the drive wheels inside the first outer frame. After the servo motor is started, the transmission gear set drives all the drive wheels to rotate synchronously, which facilitates the drive wheels to move the screen with the film applied.

[0010] According to the above technical solution, the front end of the base plate is connected to a front plate, the front end of the front plate is fixedly connected to a connector, and the outer wall of the connector is rotatably connected to a second push rod through a bearing. The extension and retraction of the second push rod can change the deflection angle of the bottom component.

[0011] According to the above technical solution, a rear plate is fixedly connected to the bottom of the base plate away from the front plate, a third push rod is fixedly connected to the side of the rear plate away from the base plate, a first connecting plate is fixedly connected to the end of the third push rod away from the rear plate, and a locking plate is fixedly connected to the end of the first connecting plate away from the third push rod. The extension and retraction of the third push rod can change the position of the first connecting plate and the locking plate.

[0012] According to the above technical solution, the bottom component includes a second connecting plate. Connecting holes are provided on both sides of the second connecting plate. The inner wall of the connecting hole is rotatably connected to the first connecting column via a bearing. A locking hole is provided on the rear side of the second connecting plate. The inner wall of the locking hole is movably connected to a locking plate. The deflection angle of the bottom component is locked by the locking plate being embedded in the locking hole. By setting the bottom component, during the subsequent polarizer bonding process by the pressure roller, the bottom component will not shake due to external force or equipment operation, ensuring that the polarizer on the vacuum adsorption plate always maintains its bonding posture, achieving stable locking of the bonding angle, avoiding the effect of shaking during bonding, and further improving bonding accuracy.

[0013] According to the above technical solution, a third frame is fixedly connected to the front end of the second connecting plate, an adsorption component is fixedly connected to the bottom of the third frame, and first connecting rods are fixedly connected to both sides of the front end of the third frame. A second connecting column is fixedly connected to the inner side of the two first connecting rods away from the third frame. The outer wall of the second connecting column is rotatably connected to the second push rod through a bearing. The second push rod changes the overall deflection angle of the bottom component by pulling the second connecting column.

[0014] According to the above technical solution, the adsorption assembly includes a vacuum adsorption plate. The bottom of the vacuum adsorption plate is used to adsorb the polarizer that needs to be attached to the display. Sliding columns are fixedly connected to both sides of the vacuum adsorption plate. An auxiliary component is movably connected to the outer wall of the sliding column. A suction device is fixedly connected to the top of the vacuum adsorption plate. A connecting pipe is fixedly connected to the outer wall of the suction device. The end of the connecting pipe away from the suction device is fixedly connected to the vacuum adsorption plate. The suction device is used to draw air to provide power for the vacuum adsorption of the vacuum adsorption plate.

[0015] According to the above technical solution, the auxiliary component includes a track, the outer wall of the third frame is fixedly connected to the track, a first slider is movably connected to the outer wall of the track, a second slider is fixedly connected to the side of the first slider away from the track, a third connecting plate is fixedly connected to the top of the first slider, a second connecting rod is rotatably connected to the outer wall of the third connecting plate through a bearing, and the end of the second connecting rod away from the third connecting plate is rotatably connected to the front plate through a bearing. The deflection of the bottom component can change the position of the first slider on the track through the second connecting rod. By setting the auxiliary component, the pressure roller moves a certain distance towards the display screen, increasing the pressure of the pressure roller on the display screen, effectively strengthening the adhesion effect between the polarizer and the display screen. At the same time, the elastic component provides movable space for the pressure roller, avoiding local pressure damage during display film application, ensuring that the polarizer and the display screen are tightly adhered, reducing air bubble residue, and improving the adhesion quality.

[0016] According to the above technical solution, a movable plate is movably connected to the outer wall of the sliding column. A right-angle plate is fixedly connected to the side of the movable plate away from the vacuum adsorption plate. A third connecting rod is fixedly connected to the front end of the right-angle plate. A pressure roller is rotatably connected to the end of the third connecting rod away from the right-angle plate via a bearing. A sliding groove plate is fixedly connected to the end of the right-angle plate away from the third connecting rod. A pressure roller is fixedly connected to the inner wall of the sliding groove plate. The inner wall of the sliding groove plate is movably connected to a second slider. The inner wall of the second slider is fixedly connected to the pressure roller. The movement of the second slider can change the extension distance of the pressure roller, and the elasticity of the elastic component itself allows the pressure roller to have a certain amount of movable space.

[0017] A process for attaching a polarizer to a liquid crystal display screen includes the following steps:

[0018] S1. When polarizer application is required on the LCD screen, the unprocessed LCD screen is placed stably on the pushing assembly. Then, the pushing device in the pushing assembly is activated to push the unprocessed screen to the processing area of ​​the film application mechanism. The suction device of the adsorption assembly has been activated beforehand. The vacuum adsorption plate generates negative pressure at the bottom through the connecting tube to adsorb the polarizer to be applied. The upper and lower sets of vacuum adsorption plates in the equipment correspond to the upper and lower surfaces of the screen respectively. Therefore, the polarizer application operation on the upper and lower sides can be completed simultaneously during the process of the screen passing through the film application mechanism.

[0019] S2. During the process of the LCD screen passing through the film-applying mechanism, the front-end conveying relies on the continuous pushing of the pushing component to ensure that the screen enters the film-applying mechanism stably. When the screen part is fully applied and extends out of the film-applying mechanism, the driving mechanism of the first outer frame drives the driving wheel to rotate. The subsequent conveying of the screen is completed by the friction between the driving wheel and the surface of the screen. Finally, the finished screen with the polarizer fully applied is conveyed to the collection area outside the equipment.

[0020] S3. After completing the single-time polarizer application process for the LCD screen, firstly, the third push rod is activated to retract, causing the locking plate to be pulled out of the locking hole and releasing the angle lock on the bottom component; then, the second push rod is activated to retract, pulling the bottom component to a horizontal angle; subsequently, the second moving device is activated, driving the bottom component to move horizontally to the polarizer replenishment station; finally, the telescopic device is activated to extend, causing the bottom component to descend, so that the vacuum adsorption plate adheres to the new polarizer to be replenished, and at the same time, the suction device is activated to adsorb and fix the new polarizer to the bottom of the vacuum adsorption plate, completing the polarizer replenishment.

[0021] S4. After the new polarizer is adsorbed, the telescopic device is first activated to retract, moving the bottom component to a preset height. Then, the second moving device is activated to drive the bottom component back to the application station of the film application mechanism. Subsequently, the second push rod is activated to extend, adjusting the bottom component to a preset deflection angle. After the angle adjustment is completed, the third push rod is activated to extend, driving the locking plate to embed into the locking hole, locking the deflection angle of the bottom component to ensure subsequent application stability. Finally, the new unprocessed LCD screen is pushed into the application station of the film application mechanism by pushing the component, and the equipment enters the next polarizer application.

[0022] Compared with the prior art, the present invention provides a liquid crystal display polarizer bonding machine and its bonding process, relating to TFT liquid crystal display technology, and has the following beneficial effects:

[0023] 1. By setting up a film-applying mechanism, this invention can realize the synchronous application of polarizers on the upper and lower sides of the liquid crystal display screen. When the display screen is pushed to the processing area, the upper and lower sets of vacuum adsorption plates can simultaneously contact the surface of the display screen. Unlike the prior art, there is no need to perform single-sided application and flipping operations. This not only greatly shortens the application cycle and improves processing efficiency, but also avoids the problem of polarizer misalignment caused by secondary positioning, thus ensuring the yield rate during production.

[0024] 2. By setting up auxiliary components, the pressure roller moves a certain distance towards the display screen, increasing the pressure of the pressure roller on the display screen and effectively enhancing the adhesion effect between the polarizer and the display screen. At the same time, the elastic component provides movable space for the pressure roller, which avoids local pressure damage during display screen film application, ensures that the polarizer and the display screen are tightly adhered, reduces air bubble residue, and improves the adhesion quality.

[0025] 3. By setting a bottom component, the present invention ensures that the polarizer on the vacuum adsorption plate will not shake due to external force or equipment operation during the subsequent polarizer bonding process of the pressure roller. This ensures that the polarizer on the vacuum adsorption plate always maintains the bonding posture, achieves stable locking of the bonding angle, avoids the effect of shaking during bonding, and further improves the bonding accuracy.

[0026] 4. This invention, by setting a pushing component, has a different radius on the inner side of the placement roller than on the outer side, which is used to limit the placement position of the display. When the display is placed, it can be aligned and positioned by relying on the concave part of the placement roller, avoiding placement deviation. At the same time, the first push rod can drive the push rod to move up and down. When the unprocessed display needs to be pushed in by the rear feeding equipment, the first push rod can be controlled to retract, so that the push rod is lowered to a height below the placement roller, avoiding the push rod from blocking the pushing path of the rear feeding equipment. After the feeding is completed, the height of the push rod can be adjusted by the first push rod to push the display along the placement roller towards the film application mechanism. Attached Figure Description

[0027] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0028] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 This is a cross-sectional view of the overall structure of the present invention;

[0030] Figure 3 This is a partial structural schematic diagram of the present invention;

[0031] Figure 4 This is a schematic diagram of the pushing component structure of the present invention;

[0032] Figure 5 Schematic diagram of the film application mechanism of the present invention Figure 1 ;

[0033] Figure 6 This is a schematic diagram of the motion of the film-applying mechanism of the present invention;

[0034] Figure 7 Schematic diagram of the film application mechanism of the present invention Figure 2 ;

[0035] Figure 8 Schematic diagram of the bottom component of the present invention Figure 1 ;

[0036] Figure 9 Schematic diagram of the bottom component of the present invention Figure 2 ;

[0037] Figure 10 This is a schematic diagram of the adsorption component of the present invention;

[0038] Figure 11 Schematic diagram of auxiliary components of the present invention Figure 1 ;

[0039] Figure 12 Schematic diagram of auxiliary components of the present invention Figure 2 ;

[0040] Figure 13 Schematic diagram of auxiliary components of the present invention Figure 3 .

[0041] In the diagram: 1. Base; 101. First support column; 102. Second support column; 103. Outer shell; 104. Observation window; 105. First outer frame; 106. Drive wheel; 2. Pushing assembly; 201. Second outer frame; 202. Placement roller; 203. First moving device; 204. First push rod; 205. Push rod; 3. Film application mechanism; 301. Second moving device; 302. Telescopic device; 303. Base plate; 304. Front plate; 305. Connector; 306. Second push rod; 307. Connecting frame; 308. First connecting column; 309. Rear plate; 3010. Third push rod; 3011. First connecting plate; 30 12. Locking plate; 31. Bottom assembly; 311. Second connecting plate; 312. Connecting hole; 313. Locking hole; 314. Third frame; 315. First connecting rod; 316. Second connecting column; 32. Adsorption assembly; 321. Vacuum adsorption plate; 322. Sliding column; 323. Suction device; 324. Connecting pipe; 33. Auxiliary assembly; 331. Track; 332. First slider; 333. Second slider; 334. Third connecting plate; 335. Second connecting rod; 336. Movable plate; 337. Right angle plate; 338. Third connecting rod; 339. Pressure roller; 3310. Slide plate; 3311. Elastic assembly. Detailed Implementation

[0042] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0043] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the invention, and should not be construed as limiting the invention.

[0044] 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. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0045] Example 1: See Figures 1-4This invention provides a technical solution: a liquid crystal display screen polarizer attachment machine, including a base 1, a first support column 101 fixedly connected to the top of the base 1, a second support column 102 fixedly connected to the top of the base 1, a housing 103 fixedly connected to the top of the base 1, and an observation window 104 fixedly connected to the front end of the housing 103. To ensure that the equipment can stably achieve synchronous attachment of polarizers on the upper and lower sides of the liquid crystal display screen and avoid misalignment of double-sided attachment due to unstable material conveying, a pushing component 2 and a drive wheel 106 are provided. The top of the second support column 102... A push assembly 2 is fixedly connected, and a film-applying mechanism 3 is fixedly connected to the inner wall of the outer shell 103; a first outer frame 105 is fixedly connected to the top of the first support column 101, and a drive wheel 106 is rotatably connected to the inside of the first outer frame 105 through a bearing. The first outer frame 105 has a transmission gear set driven by a servo motor, which is connected to all the drive wheels 106 inside the first outer frame 105; after the servo motor is started, the transmission gear set drives all the drive wheels 106 to rotate synchronously, which facilitates the drive wheels 106 to move the screen that has been film-applied.

[0046] The pushing assembly 2 includes a second outer frame 201, the bottom of which is fixedly connected to a second support column 102. Placement rollers 202 are rotatably connected to both sides of the inner wall of the second outer frame 201 via bearings. A first moving device 203 is fixedly connected to the top of the second outer frame 201. The first moving device 203 is a linear motor that drives the moving end to move left and right. A first push rod 204 is fixedly connected to the top of the moving device 203. A push rod 205 is fixedly connected to the top of the first push rod 204. The first push rod 204 can change the height of the push rod 205. The push rod 205 is used to push the display on the placement roller 202. The display screen moves, and the second outer frame 201 is fixed to the second support column 102 and the outer shell 103 at the bottom. The placement rollers 202 on both sides of its inner wall are rotatably connected by bearings to support the unprocessed display screen. At the same time, a gap is left between the placement rollers 202 on both sides to allow the push rod 205 to pass through. During operation, the display screen is first placed on the placement rollers 202 by the feeding device. Then, the push rod 205 is adjusted by the extension and retraction of the first push rod 204 to adapt to the height of the side of the display screen. Next, the first moving device 203, which is a linear motor, drives the moving end to move towards the film-applying mechanism 3, which drives the push rod 205 to move synchronously, thereby pushing the display screen on the placement rollers 202 to be transported to the processing area of ​​the film-applying mechanism 3.

[0047] Example 2: Please refer to Figures 5-13Based on Embodiment 1, this invention provides a technical solution: To solve the problems of low efficiency and easy misalignment during secondary positioning in existing equipment with single-sided, multi-stage film application, and to simultaneously improve the film application efficiency and quality, a film application mechanism 3 is specifically designed. The film application mechanism 3 includes a second moving device 301. The inner wall of the outer shell 103 is fixedly connected to the second moving device 301. A telescopic device 302 is fixedly connected to the inner wall of the moving end of the second moving device 301. A base plate 303 is fixedly connected to the bottom of the telescopic device 302. A connecting frame 307 is fixedly connected to the bottom of the base plate 303. First connecting columns 308 are fixedly connected to the inner sides of both bottom ends of the connecting frame 307. The outer wall of the first connecting columns 308 is rotatably connected to a bottom assembly 31 via bearings. A linear motor is installed inside the second moving device 301 to control the bottom assembly. The bottom assembly 31 is in a horizontal position, while the telescopic device 302 can control the height of the bottom assembly 31. The front end of the bottom plate 303 is connected to the front plate 304, and the front end of the front plate 304 is fixedly connected to the connector 305. The outer wall of the connector 305 is rotatably connected to the second push rod 306 through a bearing. The extension and retraction of the second push rod 306 can change the deflection angle of the bottom assembly 31. The bottom of the bottom plate 303 away from the front plate 304 is fixedly connected to the rear plate 309. The side of the rear plate 309 away from the bottom plate 303 is fixedly connected to the third push rod 3010. The side of the third push rod 3010 away from the rear plate 309 is... The first connecting plate 3011 is fixedly connected to the end of the first connecting plate 3011, which is away from the third push rod 3010. The locking plate 3012 is fixedly connected to the end of the first connecting plate 3011. The extension and retraction of the third push rod 3010 can change the position of the first connecting plate 3011 and the locking plate 3012. The linear motor inside the second moving device 301 can drive the moving end to move horizontally, thereby driving the telescopic device 302, the base plate 303 and the parts below the base plate fixed thereto to move horizontally, thereby adjusting the horizontal position of the bottom assembly 31. Secondly, the telescopic device 302 can extend and retract in the vertical direction to adjust the height of the bottom assembly 31. When the second push rod 306 at the front end of the base plate 303 extends or retracts, it pulls or pushes the bottom component 31 with the connector 305 as the fulcrum, causing the bottom component 31 to rotate around the first connecting post 308, thereby changing the deflection angle of the bottom component 31; the third push rod 3010 is extendable and retractable, driving the first connecting plate 3011 and the locking plate 3012 to move. When the deflection angle of the bottom component 31 is adjusted to the correct position, the third push rod 3010 extends, pushing the locking plate 3012 to embed into the locking hole 313 of the bottom component 31, locking the deflection angle of the bottom component 31, and preventing the bottom component 31 from shaking during the attachment process.

[0048] The bottom component 31 includes a second connecting plate 311. Connecting holes 312 are provided on both sides of the second connecting plate 311. The inner walls of the connecting holes 312 are rotatably connected to the first connecting post 308 via bearings. A locking hole 313 is provided on the rear side of the second connecting plate 311. The inner wall of the locking hole 313 is movably connected to the locking plate 3012. The locking plate 3012 is inserted into the locking hole 313 to lock the deflection angle of the bottom component 31. A third frame 314 is fixedly connected to the front end of the second connecting plate 311. An adsorption component 32 is fixedly connected to the bottom of the third frame 314. First connecting rods 315 are fixedly connected to both sides of the front end of the third frame 314. The two first connecting rods 315 are positioned away from each other. The inner side of one end of the third frame 314 is fixedly connected to the second connecting post 316. The outer wall of the second connecting post 316 is rotatably connected to the second push rod 306 through a bearing. The second push rod 306 changes the overall deflection angle of the bottom component 31 by pulling the second connecting post 316. The bottom component 31 uses the connecting holes 312 on both sides as deflection fulcrums. When the attachment angle needs to be adjusted, the second push rod 306 extends and retracts to pull the second connecting post 316, which in turn drives the second connecting plate 311 to deflect around the first connecting post 308 until the angle matches the display screen attachment requirements. Then, the third push rod 3010 pushes the locking plate 3012 to embed into the locking hole 313 of the second connecting plate 311, locking the deflection angle and preventing shaking during attachment.

[0049] The adsorption assembly 32 includes a vacuum adsorption plate 321. The bottom of the vacuum adsorption plate 321 is used to adsorb the polarizer that needs to be attached to the display. Sliding columns 322 are fixedly connected to both sides of the vacuum adsorption plate 321. An auxiliary assembly 33 is movably connected to the outer wall of the sliding column 322. A suction device 323 is fixedly connected to the top of the vacuum adsorption plate 321. A connecting pipe 324 is fixedly connected to the outer wall of the suction device 323. The end of the connecting pipe 324 away from the suction device 323 is fixedly connected to the vacuum adsorption plate 321. The suction device 323 is used to draw air to provide power for the vacuum adsorption of the vacuum adsorption plate 321.

[0050] The auxiliary component 33 includes a track 331. The outer wall of the third frame 314 is fixedly connected to the track 331. A first slider 332 is movably connected to the outer wall of the track 331. A second slider 333 is fixedly connected to the side of the first slider 332 away from the track 331. A third connecting plate 334 is fixedly connected to the top of the first slider 332. A second connecting rod 335 is rotatably connected to the outer wall of the third connecting plate 334 via a bearing. The end of the second connecting rod 335 away from the third connecting plate 334 is rotatably connected to the front plate 304 via a bearing. The deflection of the bottom component 31 can change the position of the first slider 332 on the track 331 by the second connecting rod 335. A movable plate 336 is movably connected to the outer wall of the sliding column 322. A right-angle plate 337 is fixedly connected to the side of the movable plate 336 away from the vacuum adsorption plate 321. A third connecting rod 338 is fixedly connected to the front end of the right-angle plate 337. A pressure roller 33 is rotatably connected to the end of the third connecting rod 338 away from the right-angle plate 337 via a bearing. 9. A sliding plate 3310 is fixedly connected to the end of the right-angle plate 337 away from the third connecting rod 338. A pressure roller 339 is fixedly connected to the inner wall of the sliding plate 3310. The inner wall of the sliding plate 3310 is movably connected to the second slider 333. The inner wall of the second slider 333 is fixedly connected to the pressure roller 339. The movement of the second slider 333 can change the extension distance of the pressure roller 339. The elasticity of the elastic component 3311 allows the pressure roller 339 to have a certain amount of room to move. When the bottom component 31 deflects, the second connecting rod 335 will drive the first slider 332 to slide along the track 331. The second slider 333, which is fixed to the first slider 332, moves along the sliding plate 3310, thereby pushing the pressure roller 339 to adjust the extension distance so that it fits the surface of the polarizer. During the application process, the pressure roller 339 rolls and compacts the polarizer. At the same time, the elastic component 3311 provides room for the pressure roller to move through its own elasticity, ensuring that the polarizer fits tightly with the display screen and reducing air bubbles.

[0051] A process for attaching a polarizer to a liquid crystal display screen includes the following steps:

[0052] S1. When polarizer application is required on the LCD screen, the unprocessed LCD screen is placed stably on the pushing component 2. Then, the pushing device in the pushing component 2 is activated to push the unprocessed screen to the processing area of ​​the film application mechanism 3. The suction device 323 of the adsorption component 32 has been activated beforehand. The vacuum adsorption plate 321 generates negative pressure at the bottom through the connecting pipe 324 to adsorb the polarizer to be applied. The upper and lower sets of vacuum adsorption plates 321 configured in the equipment correspond to the upper and lower surfaces of the screen respectively. Therefore, the polarizer application operation on the upper and lower sides can be completed simultaneously during the process of the screen passing through the film application mechanism 3.

[0053] S2. During the process of the LCD screen passing through the film-applying mechanism 3, the front-end conveying relies on the continuous pushing of the pushing component 2 to ensure that the screen stably enters the film-applying mechanism 3. When the screen part is fully applied and extends out of the film-applying mechanism 3, the driving mechanism of the first outer frame 105 drives the driving wheel 106 to rotate. The subsequent conveying of the screen is completed by the friction between the driving wheel 106 and the surface of the screen. Finally, the finished screen with the polarizer fully applied is conveyed to the collection area outside the equipment.

[0054] S3. After completing the single-time polarizer application process for the LCD screen, firstly, the third push rod 3010 is activated to retract, causing the locking plate 3012 to be pulled out from the locking hole 313, thus releasing the angle lock on the bottom component 31; then, the second push rod 306 is activated to retract, pulling the bottom component 31 to a horizontal angle; subsequently, the second moving device 301 is activated, driving the bottom component 31 to move horizontally to the polarizer replenishment station; finally, the telescopic device 302 is activated to extend, causing the bottom component 31 to descend, so that the vacuum adsorption plate 321 adheres to the new polarizer to be replenished, and at the same time, the suction device 323 is activated to adsorb and fix the new polarizer to the bottom of the vacuum adsorption plate 321, thus completing the polarizer replenishment.

[0055] S4. After the new polarizer is adsorbed, the telescopic device 302 is first activated to retract, moving the bottom component 31 to a preset height. Then, the second moving device 301 is activated to drive the bottom component 31 back to the attachment station of the film application mechanism 3. Subsequently, the second push rod 306 is activated to extend, adjusting the bottom component 31 to a preset deflection angle. After the angle adjustment is completed, the third push rod 3010 is activated to extend, driving the locking plate 3012 to embed into the locking hole 313, locking the deflection angle of the bottom component 31 to ensure subsequent attachment stability. Finally, the new unprocessed LCD screen is pushed into the attachment station of the film application mechanism 3 by pushing component 2, and the equipment enters the next polarizer attachment.

[0056] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0057] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A liquid crystal display screen polarizer attachment machine, comprising a base (1), a first support column (101) fixedly connected to the top of the base (1), a second support column (102) fixedly connected to the top of the base (1), a housing (103) fixedly connected to the top of the base (1), and an observation window (104) fixedly connected to the front end of the housing (103), characterized in that, The top of the second support column (102) is fixedly connected to a pushing component (2), and the inner wall of the outer shell (103) is fixedly connected to a film-applying mechanism (3). The film application mechanism (3) includes: The second moving device (301) is fixedly connected to the inner wall of the outer shell (103). The inner wall of the moving end of the second moving device (301) is fixedly connected to the telescopic device (302). The bottom of the telescopic device (302) is fixedly connected to the bottom plate (303). The bottom of the bottom plate (303) is fixedly connected to the connecting frame (307). The inner sides of both ends of the bottom of the connecting frame (307) are fixedly connected to the first connecting column (308). The outer wall of the first connecting column (308) is rotatably connected to the bottom component (31) through the bearing. The second moving device (301) is equipped with a linear motor, which can control the horizontal position of the bottom component (31), while the telescopic device (302) can control the height of the bottom component (31). The front end of the base plate (303) is connected to the front plate (304), and the front end of the front plate (304) is fixedly connected to the connector (305). The outer wall of the connector (305) is rotatably connected to the second push rod (306) through the bearing. The extension and retraction of the second push rod (306) can change the deflection angle of the bottom component (31). A rear plate (309) is fixedly connected to the bottom of the base plate (303) away from the front plate (304). A third push rod (3010) is fixedly connected to the side of the rear plate (309) away from the base plate (303). A first connecting plate (3011) is fixedly connected to the end of the third push rod (3010) away from the rear plate (309). A locking plate (3012) is fixedly connected to the end of the first connecting plate (3011) away from the third push rod (3010). The extension and retraction of the third push rod (3010) can change the position of the first connecting plate (3011) and the locking plate (3012). The bottom component (31) includes a second connecting plate (311), and connecting holes (312) are provided on both sides of the second connecting plate (311). The inner wall of the connecting hole (312) is rotatably connected to the first connecting column (308) through a bearing. A locking hole (313) is provided on the rear side of the second connecting plate (311). The inner wall of the locking hole (313) is movably connected to the locking plate (3012). The deflection angle of the bottom component (31) is locked by the locking plate (3012) being embedded in the locking hole (313). The front end of the second connecting plate (311) is fixedly connected to a third frame (314), the bottom of the third frame (314) is fixedly connected to an adsorption component (32), and the front ends of the third frame (314) are fixedly connected to two first connecting rods (315). The inner side of the two first connecting rods (315) away from the third frame (314) is fixedly connected to a second connecting column (316). The outer wall of the second connecting column (316) is rotatably connected to the second push rod (306) through a bearing. The second push rod (306) changes the overall deflection angle of the bottom component (31) by pulling the second connecting column (316). The adsorption component (32) includes a vacuum adsorption plate (321), and the upper and lower sets of vacuum adsorption plates (321) configured in the device correspond to the upper and lower surfaces of the display screen respectively. Therefore, during the process of the display screen passing through the film attaching mechanism (3), the polarizer attaching operation on the upper and lower sides can be completed simultaneously.

2. The liquid crystal display screen polarizer attachment machine according to claim 1, characterized in that: The top of the first support column (101) is fixedly connected to a first outer frame (105), and the interior of the first outer frame (105) is rotatably connected to a drive wheel (106) via a bearing. The first outer frame (105) contains a transmission gear set driven by a servo motor, and the transmission gear set is connected to all the drive wheels (106) inside the first outer frame (105). After the servo motor is started, the transmission gear set drives all drive wheels (106) to rotate synchronously, which facilitates the drive wheels (106) to move the screen that has been coated.

3. The liquid crystal display screen polarizer attachment machine according to claim 2, characterized in that: The bottom of the vacuum adsorption plate (321) is used to adsorb the polarizer that needs to be attached to the display. Sliding columns (322) are fixedly connected to both sides of the vacuum adsorption plate (321). An auxiliary component (33) is movably connected to the outer wall of the sliding column (322). A suction device (323) is fixedly connected to the top of the vacuum adsorption plate (321). A connecting pipe (324) is fixedly connected to the outer wall of the suction device (323). The end of the connecting pipe (324) away from the suction device (323) is fixedly connected to the vacuum adsorption plate (321). The suction device (323) is used to draw air to provide power for the vacuum adsorption of the vacuum adsorption plate (321).

4. The liquid crystal display screen polarizer attachment machine according to claim 3, characterized in that: The auxiliary component (33) includes a track (331). The outer wall of the third frame (314) is fixedly connected to the track (331). A first slider (332) is movably connected to the outer wall of the track (331). A second slider (333) is fixedly connected to the side of the first slider (332) away from the track (331). A third connecting plate (334) is fixedly connected to the top of the first slider (332). A second connecting rod (335) is rotatably connected to the outer wall of the third connecting plate (334) through a bearing. The end of the second connecting rod (335) away from the third connecting plate (334) is rotatably connected to the front plate (304) through a bearing. The deflection of the bottom component (31) can change the position of the first slider (332) on the track (331) through the second connecting rod (335).

5. A liquid crystal display polarizer attachment machine according to claim 4, characterized in that: The outer wall of the sliding column (322) is movably connected to a movable plate (336). A right-angle plate (337) is fixedly connected to the side of the movable plate (336) away from the vacuum adsorption plate (321). A third connecting rod (338) is fixedly connected to the front end of the right-angle plate (337). A pressure roller (339) is rotatably connected to the end of the third connecting rod (338) away from the right-angle plate (337) through a bearing. A slide plate (3310) is fixedly connected to the end of the right-angle plate (337) away from the third connecting rod (338). The inner wall of the slide plate (3310) is movably connected to a second slider (333). The movement of the second slider (333) can change the extension distance of the pressure roller (339), and the elasticity of the elastic component (3311) itself allows the pressure roller (339) to have a certain amount of movable space.

6. A liquid crystal display screen polarizer bonding process, applied to the liquid crystal display screen polarizer bonding machine as described in claim 5, characterized in that, Includes the following steps: S1. When it is necessary to perform polarizer application on the liquid crystal display screen, place the unprocessed liquid crystal display screen stably on the push assembly (2), and then start the push device in the push assembly (2) to push the unprocessed display screen to the processing area of ​​the film application mechanism (3). The suction device (323) of the adsorption component (32) has been activated. The vacuum adsorption plate (321) generates negative pressure at the bottom through the connecting pipe (324) to adsorb the polarizer to be attached. The upper and lower vacuum adsorption plates (321) configured in the equipment correspond to the upper and lower surfaces of the display screen respectively. Therefore, the polarizer attachment operation on the upper and lower sides can be completed simultaneously during the process of the display screen passing through the film attaching mechanism (3). S2. During the process of the LCD screen passing through the film-applying mechanism (3), the front-end conveyor relies on the continuous pushing of the pushing component (2) to ensure that the screen stably enters the film-applying mechanism (3); When the display screen is fully attached and extends out of the film-attaching mechanism (3), the drive mechanism of the first outer frame (105) drives the drive wheel (106) to rotate. The subsequent transport of the display screen is completed by the friction between the drive wheel (106) and the surface of the display screen, and finally the finished display screen with the polarizer fully attached is transported to the collection area outside the equipment. S3. After completing the single-time polarizer application process for the LCD screen, first activate the third push rod (3010) to retract, causing the locking plate (3012) to be pulled out from the locking hole (313), thus releasing the angle lock on the bottom component (31). Next, the second push rod (306) is activated to retract, pulling the bottom component (31) to deflect to a horizontal angle; Then the second moving device (301) is started, driving the bottom component (31) to move horizontally to the polarizer replenishment station; Finally, the telescopic device (302) is activated to extend, causing the bottom component (31) to descend, so that the vacuum adsorption plate (321) fits against the new polarizer to be replenished. At the same time, the suction device (323) is activated to adsorb and fix the new polarizer to the bottom of the vacuum adsorption plate (321), thus completing the polarizer replenishment. S4. After the new polarizer is adsorbed, the telescopic device (302) is activated to retract, which moves the bottom component (31) to the preset height. Then start the second moving device (301) to drive the bottom component (31) to reset to the application station of the film application mechanism (3); Then the second push rod (306) is activated to extend the bottom component (31) to reach the preset deflection angle; After the angle adjustment is completed, the third push rod (3010) is activated to extend, which drives the locking plate (3012) to be inserted into the locking hole (313) to lock the deflection angle of the bottom component (31) and ensure the stability of subsequent attachment; Finally, the new unprocessed liquid crystal display is pushed to the bonding station of the film bonding mechanism (3) by the pushing component (2), and the equipment enters the next polarizer bonding.

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