Intelligent polaroid attaching device

Abstract

The invention provides an intelligent polaroid attaching device applied to the technical field of liquid crystal display, the intelligent polaroid attaching device comprises a rotary feeding mechanism and a polaroid feeding mechanism which are arranged on a rack, the rotary feeding mechanism comprises an outer shaft sleeve, four sets of elastic arc plates are evenly arranged on the outer shaft sleeve at equal angles, and the outer shaft sleeve is further provided with an inner shaft sleeve used for adjusting the curvature of the elastic arc plates; through the arrangement of the elastic arc plate of the rotary feeding mechanism, the automatic feeding device can adapt to the shape of the flexible display screen, accurately position the flexible display screen and ensure the stability of the flexible display screen, and the polaroid and the flexible screen are tightly and uniformly attached by combining accurate control of the attaching roller. The aspects of accurate positioning, bubble removal, attachment efficiency, quality detection and the like are remarkably improved, and the overall level of polaroid attachment in the technical field of liquid crystal display is improved.

Description

Technical Field

[0001] This application relates to the field of liquid crystal display technology, and particularly to an intelligent polarizer attaching device. Background Art

[0002] In liquid crystal display technology, the attaching quality of the polarizer plays a crucial role in the display effect. Especially for flexible display screens, due to their soft and deformable characteristics, there are many problems in the attaching process of traditional polarizer attaching devices.

[0003] Due to the soft and deformable characteristics of flexible display screens, it is difficult for traditional attaching devices to accurately position and stably fix them. This results in deviations in the attaching position of the polarizer during the polarizer attaching process, thereby affecting the accuracy and integrity of the display image. For example, problems such as distorted display images and uneven edges may occur, seriously reducing the display quality. At the same time, the jigs used to fix flexible display screens cannot be adapted according to flexible display screens with different curvatures. As the jigs change continuously with the changing market demand for liquid crystal display products, the preparation cost of the jigs is high, resulting in the low efficiency of traditional attaching devices being unable to meet the rhythm of large-scale production. Their complex operation processes and slow attaching speeds prolong the production cycle, increase production costs, and reduce the market competitiveness of enterprises.

[0004] Therefore, an intelligent polarizer attaching device is proposed. Summary of the Invention

[0005] The purpose of this application is to solve the technical problem that traditional polarizer attaching devices cannot meet the fixing requirements for attaching polarizers to display screens with different curvatures, resulting in low polarizer attaching efficiency. Compared with the prior art, an intelligent polarizer attaching device is provided, which includes a rotating feeding mechanism and a film feeding mechanism arranged on a frame. The rotating feeding mechanism includes an outer shaft sleeve, on which four groups of elastic arc plates are equally divided at equal angles. A number of vacuum adsorption holes for adsorbing flexible display screens are provided on the elastic arc plates, and an inner shaft sleeve for adjusting the curvature of the elastic arc plates is also provided on the outer shaft sleeve;

[0006] The film feeding mechanism includes a feeding roller, a film covering winding roller, and a bottom film winding roller. The feeding roller is used to provide a polarizer assembly, and the polarizer assembly includes a bottom film wound by the bottom film winding roller, a film covering wound by the film covering winding roller, and a flexible polarizer coated between the bottom film and the film covering;

[0007] The film feeding mechanism further includes a guiding plate. A pushing cylinder for driving the horizontal displacement of the guiding plate is fixed on the frame. An attaching roller is also rotatably connected to one side of the guiding plate close to the rotating feeding mechanism. The bottom film winding roller flattens and winds the polarizer assembly with the film covering removed on the upper surface of the guiding plate through a guiding roller.

[0008] Furthermore, a loading and unloading manipulator is fixed on the top of the frame for the rotary feeding mechanism. The loading and unloading manipulator is used to clamp the flexible display screen to which the flexible polarizer is to be attached and place it on the elastic arc plate located at the top. A vision detection mechanism is fixed on one side of the rotary feeding mechanism away from the film feeding mechanism of the frame. The vision detection mechanism is used to detect the attachment state of the flexible polarizer on the flexible display screen. A vacuum exhaust mechanism is arranged at the bottom of the rotary feeding mechanism of the frame. The vacuum exhaust mechanism is used to remove the attached bubbles between the flexible polarizers on the flexible display screen by using the negative pressure of the vacuum adsorption holes.

[0009] Furthermore, two sets of symmetrically arranged brackets are provided at the top of the frame. The outer shaft sleeve is rotatably connected to the tops of the two sets of brackets. Both ends of the bottom of the elastic arc plate are rotatably connected with arc length adjusting plates. The middle section of the bottom of the elastic arc plate is rotatably connected with a radial adjusting plate. One end of the arc length adjusting plate away from the elastic arc plate is fixed with an adjusting slider. An arc-shaped chute matching the adjusting slider and a radial chute matching the radial adjusting plate are provided on the outer wall of the outer shaft sleeve.

[0010] Adjusting mechanisms are provided at both ends of the outer shaft sleeve. The adjusting mechanisms are used to adjust the distance between the arc length adjusting plates and the depth of the radial adjusting plates in the radial chutes, so as to achieve the purpose of adjusting the curvature of the elastic arc plate.

[0011] Furthermore, two sets of symmetrically arranged guiding holes are provided on each arc length adjusting plate. A circular guide rail matching the guiding holes is fixed on the outer wall of the outer shaft sleeve. A tension spring is sleeved between the two arc length adjusting plates by the circular guide rail. The tension spring has an elastic force to drive the two arc length adjusting plates away from each other.

[0012] Furthermore, the adjusting mechanism includes an outer adjusting disc and an inner adjusting disc. Four arc-shaped grooves are provided on the outer adjusting disc. Four radial straight grooves are provided on the inner adjusting disc. Adjusting rollers are arranged between adjacent elastic arc plates. Both ends of the adjusting rollers respectively extend into the corresponding arc-shaped grooves and straight grooves.

[0013] Furthermore, two sets of inner shaft sleeves are symmetrically arranged along the axial direction of the outer shaft sleeve and are slidably sleeved in the outer shaft sleeve. Second spline shafts are fixed at one ends of the two sets of inner shaft sleeves facing each other. Second spline grooves matching the second spline shafts are provided on the inner wall of the outer shaft sleeve. An electromagnetic ring is also fixed in the middle of the inner wall of the outer shaft sleeve. A return spring is clamped between one ends of the two sets of inner shaft sleeves facing each other.

[0014] The outer adjusting disc is fixed to one end of the inner shaft sleeve away from the second spline shaft, the inner adjusting disc is fixed to the end of the outer shaft sleeve, a driving motor is also fixed to the frame, a driving spline shaft is fixed to the output end of the driving motor, a first spline groove matching the driving spline shaft is provided on the inner shaft sleeve, a bearing seat corresponding to the end of the outer shaft sleeve is provided at the top of the bracket, and a locking mechanism for locking the outer shaft sleeve at different times is provided on the bearing seat.

[0015] Further, the locking mechanism includes a locking external tooth fixed to one side of the bearing seat of the bracket, a rotating ring is rotatably connected to one end of the inner shaft sleeve away from the second spline shaft, a locking internal tooth matching the locking external tooth is fixed to one side of the rotating ring, a limiting slider is fixed to the inner side of the circular ring of the locking internal tooth, and a limiting chute matching the limiting slider is provided at the end of the outer shaft sleeve.

[0016] Further, the return spring has an elastic force to drive the two inner shaft sleeves away from each other, the electromagnetic ring has a magnetic attraction force on the opposite ends of the two inner shaft sleeves under the energized condition, and the electromagnetic ring has a magnetic attraction force on the radial adjusting plate under the energized condition;

[0017] Locking racks are provided on both sides of the radial adjusting plate, locking bladder bags matching the locking racks are provided in the radial chutes, and magnetorheological fluid is filled in the locking bladder bags.

[0018] Further, the vacuum exhaust mechanism includes a gantry seat fixed to the bottom of the frame, an upper box body is provided on the top of the gantry seat, a bottom plate is provided at the bottom of the gantry seat, buffer springs are provided on both the upper and lower sides of the bottom plate, the four corners of the bottom plate and the upper box body are fixedly connected by slide rods, a sliding sleeve matching the slide rods is provided on the gantry seat, and a sealing skirt is also fixed to the top of the upper box body.

[0019] Further, a sealing ring matching the sealing skirt is fixed to the top of the elastic arc plate, and an exhaust solenoid valve is also provided on one side of the upper box body.

[0020] Compared with the prior art, the advantages of the present application are as follows:

[0021] Through the arrangement of the elastic arc plate of the rotary feeding mechanism, the present invention can adapt to the shape of the flexible display screen, accurately position and ensure its stability. Combined with the precise control of the attaching roller, the polarizer is tightly and evenly attached to the flexible screen, avoiding image distortion and wrinkles, and improving the display quality. Compared with the prior art, through the coordinated work of each mechanism, the present invention has made remarkable progress in aspects such as precise positioning, bubble removal, attaching efficiency and quality detection, and has improved the overall level of polarizer attachment in the field of liquid crystal display technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a front structural schematic diagram of the present application;

[0023] Figure 2 It is a schematic side structure diagram of the present application;

[0024] Figure 3 It is a schematic structure diagram of the film feeding mechanism proposed in the present application;

[0025] Figure 4 is Figure 3 an enlarged schematic structure diagram of part A in

[0026] Figure 5 It is a schematic structure diagram of the rotary feeding mechanism proposed in the present application;

[0027] Figure 6 It is a schematic structure diagram of the elastic arc plate and its components proposed in the present application;

[0028] Figure 7 It is a schematic structure diagram of the outer shaft sleeve proposed in the present application;

[0029] Figure 8 It is an exploded schematic structure diagram of the outer shaft sleeve and the inner shaft sleeve proposed in the present application;

[0030] Figure 9 It is a schematic longitudinal sectional structure diagram of the rotary feeding mechanism proposed in the present application;

[0031] Figure 10 is Figure 9 an enlarged schematic structure diagram of part B in

[0032] Figure 11 is Figure 9 an enlarged schematic structure diagram of part C in

[0033] Figure 12 It is a schematic transverse sectional structure diagram of the rotary feeding mechanism proposed in the present application;

[0034] Figure 13 is Figure 12 an enlarged schematic structure diagram of part D in

[0035] Figure 14 is Figure 12 an enlarged schematic structure diagram of part E in

[0036] Description of the reference numerals in the figure:

[0037] 1. Frame;

[0038] 2. Rotary feeding mechanism; 201. Driving motor; 21. Elastic arc plate; 211. Sealing ring; 212. Vacuum adsorption hole; 213. Arc length adjusting plate; 214. Adjusting slider; 215. Radial adjusting plate; 216. Locking rack; 217. Guide hole; 22. Curving adjusting mechanism; 221. Outer adjusting disc; 222. Inner adjusting disc; 23. Driving spline shaft; 24. Outer shaft sleeve; 241. Arc-shaped sliding groove; 242. Radial sliding groove; 2421. Locking bladder; 243. Circular guide rail; 244. Tension spring; 245. Second spline groove; 246. Limit sliding groove; 25. Adjusting roller; 26. Inner shaft sleeve; 261. Second spline shaft; 262. First spline groove; 27. Electromagnetic ring; 28. Return spring; 29. Rotating ring; 291. Locking internal teeth; 292. Limit slider;

[0039] 3. Film feeding mechanism; 301. Flexible polarizer; 302. Bottom film; 303. Coated film; 31. Feeding roller; 32. Coated film winding roller; 33. Bottom film winding roller; 34. Guide plate; 341. Attaching roller; 35. Pushing cylinder;

[0040] 4. Loading and unloading manipulator;

[0041] 5. Vacuum exhaust mechanism; 51. Bottom plate; 52. Buffer spring; 53. Upper box body; 531. Sealing skirt; 54. Slide bar; 55. Gantry seat;

[0042] 6. Visual inspection mechanism;

[0043] 7. Bracket; 71. Locking external teeth;

[0044] 8. Flexible display screen. Detailed implementation manners

[0045] In the embodiments, the technical solutions of the present application will be described clearly and completely with reference to the accompanying drawings of the specification. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of the present application.

[0046] Embodiment:

[0047] The present invention provides an intelligent polarizer attaching device. Please refer to Figure 1 - Figure 14 , this intelligent polarizer attaching device is supported by the frame 1 as the basis, and is provided with a rotary feeding mechanism 2 and a film feeding mechanism 3 thereon. These two mechanisms cooperate with each other to form the core part of polarizer attachment. In addition, a loading and unloading manipulator 4, a vacuum exhaust mechanism 5 and a visual inspection mechanism 6 are also equipped to jointly realize the intelligent and efficient attachment of the polarizer.

[0048] Specifically, please refer to Figure 7 -Figure 14 Figure 14 , the core component of the rotating feeding mechanism 2 is the outer shaft sleeve 24. On the circumferential direction of the outer shaft sleeve 24, four groups of elastic arc plates 21 are arranged in an equally angular distribution. The elastic arc plates 21 are not only the carriers for supporting the flexible display screen 8, but also have a unique curvature adjustment function. A number of vacuum adsorption holes 212 are distributed on the surface of the elastic arc plates 21. Through the negative pressure generated by these holes, the flexible display screen 8 can be firmly adsorbed, ensuring the stability of the display screen during the attachment process. An inner shaft sleeve 26 is arranged inside the outer shaft sleeve 24, and its main function is to adjust the curvature of the elastic arc plates 21 to adapt to flexible display screens 8 with different shapes and curvatures.

[0049] Please refer to Figure 8 - Figure 9 Figure 9 , arc length adjustment plates 213 are respectively rotatably connected to both ends of the elastic arc plate 21, and a radial adjustment plate 215 is rotatably connected to the middle of the bottom of the elastic arc plate 21. A adjustment slider 214 is fixed to the end of the arc length adjustment plate 213 away from the elastic arc plate 21. Correspondingly, an arc-shaped chute 241 matching the adjustment slider 214 and a radial chute 242 matching the radial adjustment plate 215 are machined on the outer wall of the outer shaft sleeve 24. This design enables the elastic arc plate 21 to be precisely adjusted in two dimensions of arc length and radial direction when adjusting the curvature.

[0050] Please refer to Figure 6 - Figure 8 Figure 8 , the curvature adjustment mechanism 22 arranged at both ends of the outer shaft sleeve 24 is the key component for realizing the curvature adjustment of the elastic arc plate 21. The curvature adjustment mechanism 22 is composed of an outer adjustment disc 221 and an inner adjustment disc 222. Four groups of arc-shaped grooves are evenly distributed on the outer adjustment disc 221, and four groups of radial straight grooves are correspondingly arranged on the inner adjustment disc 222. Adjustment rollers 25 are installed between adjacent elastic arc plates 21, and both ends of the adjustment rollers 25 respectively extend into the arc-shaped grooves of the outer adjustment disc 221 and the radial straight grooves of the inner adjustment disc 222. When the inner shaft sleeve 26 drives the outer adjustment disc 221 in the curvature adjustment mechanism 22 to rotate alone, it will drive the adjustment rollers 25 in the outer adjustment disc 221 to move radially on the inner adjustment disc 222, use the adjustment rollers 25 to squeeze the arc length adjustment plates 213 of adjacent elastic arc plates 21 and adjust the distance between the two, and cooperate with the adjustment of the depth of the radial adjustment plate 215 in the radial chute 242, finally achieving the purpose of precisely adjusting the curvature of the elastic arc plate 21 to meet the fixing requirements of flexible display screens 8 with different curvatures and providing stable support when attaching the polarizer.

[0051] Please refer to Figure 6 - Figure 7, in order to ensure the stability and smoothness of the arc length adjusting plate 213 during the adjustment process, two sets of symmetric guiding holes 217 are provided on the arc length adjusting plate 213. A circular guide rail 243 matching the guiding holes 217 is fixed on the outer wall of the outer shaft sleeve 24, and a tension spring 244 is sleeved on the circular guide rail 243 between the two sets of arc length adjusting plates 213. The tension spring 244 always maintains the elastic force that drives the two sets of arc length adjusting plates 213 to move away from each other, which helps to keep the arc length adjusting plate 213 in a stable motion state during the adjustment process, avoiding shaking or jamming phenomena, and thus ensuring the accuracy of the curvature adjustment of the elastic arc plate 21.

[0052] Further, please refer to Figure 8 and Figure 12 - Figure 14 , two sets of inner shaft sleeves 26 are symmetrically arranged along the axial direction of the outer shaft sleeve 24 and are slidably sleeved inside the outer shaft sleeve 24. Second spline shafts 261 are fixed at the opposite ends of the inner shaft sleeves 26, and second spline grooves 245 matching them are machined on the inner wall of the outer shaft sleeve 24. An electromagnetic ring 27 is fixed in the middle of the inner wall of the outer shaft sleeve 24, and a return spring 28 is clamped between the opposite ends of the two sets of inner shaft sleeves 26. The return spring 28 has the elastic force to drive the two sets of inner shaft sleeves 26 to move away from each other, and when the electromagnetic ring 27 is energized, it will generate magnetic attraction on the opposite ends of the two sets of inner shaft sleeves 26 and also has magnetic attraction on the radial adjusting plate 215.

[0053] The outer adjusting disc 221 is fixed at one end of the inner shaft sleeve 26 away from the second spline shaft 261, and the inner adjusting disc 222 is fixed at the end of the outer shaft sleeve 24. A driving motor 201 is fixedly installed on the frame 1, and a driving spline shaft 23 is fixedly connected to the output end of the driving motor 201. A first spline groove 262 matching the driving spline shaft 23 is provided on the inner shaft sleeve 26.

[0054] In addition, a bearing seat corresponding to the end of the outer shaft sleeve 24 is provided at the top of the bracket 7, and a locking mechanism for locking the outer shaft sleeve 24 at different times is provided on the bearing seat. The locking mechanism includes a locking external tooth 71 fixed on one side of the bearing seat of the bracket 7. A rotating ring 29 is rotatably connected to one end of the inner shaft sleeve 26 away from the second spline shaft 261. A locking internal tooth 291 matching the locking external tooth 71 is fixed on one side of the rotating ring 29. A limiting slider 292 is fixed on the inner side of the circular ring of the locking internal tooth 291, and a limiting sliding groove 246 matching the limiting slider 292 is provided at the end of the outer shaft sleeve 24.

[0055] When it is necessary to adjust the curvature of the elastic arc plate 21, the electromagnetic ring 27 is powered off to lose magnetic suction. The two inner shaft sleeves 26 move away from each other under the elastic force of the return spring 28. At this time, the second spline shaft 261 disengages from the second spline groove 245 in the outer shaft sleeve 24. At the same time, along with the movement of the inner shaft sleeve 26 moving away from each other, the locking internal teeth 291 are aligned with the locking external teeth 71. At this time, the inner shaft sleeve 26 is disengaged from the transmission connection with the outer shaft sleeve 24. At the same time, the outer shaft sleeve 24 uses the alignment of the locking external teeth 71 and the locking internal teeth 291 and the limitation of the limiting slider 292 and the limiting chute 246 to fix the whole outer shaft sleeve 24 on the bracket 7. At this time, by driving the rotation of the driving spline shaft 23 by the driving motor 201, the inner shaft sleeve 26 and the outer adjusting disc 221 are driven to rotate, adjusting the radial distance of the adjusting roller 25 on the inner adjusting disc 222, so as to achieve the purpose of adjusting the arc length of the elastic arc plate 21.

[0056] Meanwhile, locking racks 216 are arranged on both sides of the radial adjusting plate 215, and locking bladder bags 2421 matched with the locking racks 216 are arranged in the radial chute 242. The locking bladder bags 2421 are filled with magnetorheological fluid.

[0057] After the arc length of the elastic arc plate 21 is adjusted, the electromagnetic ring 27 is powered on. On the one hand, magnetic suction force is generated on the inner shaft sleeve 26, so that the two inner shaft sleeves 26 are reset against the elastic force of the return spring 28, locking the relative positions of the outer adjusting disc 221 and the inner adjusting disc 222, and realizing the fixation of the arc length of the elastic arc plate 21. On the other hand, during the power-on process of the electromagnetic ring 27, according to the curvature of the target flexible display screen 8, the electromagnetic intensity of the electromagnetic ring 27 can be changed, so that the electromagnetic ring 27 adsorbs the radial adjusting plate 215 to displace a specified distance in the radial direction, realizing the radial adjustment of the elastic arc plate 21. At this time, the electromagnetic intensity of the electromagnetic ring 27 is instantaneously increased, reducing the fluidity of the magnetorheological fluid in the locking bladder bag 2421, and further cooperating with the locking rack 216 to lock the radial position of the radial adjusting plate 215, realizing the curvature adjustment of the elastic arc plate 21.

[0058] After the curvature of the elastic arc plate 21 is adjusted, since the two inner shaft sleeves 26 approach each other by the magnetic suction force of the electromagnetic ring 27, at this time, the second spline shaft 261 is aligned with the second spline groove 245 in the outer shaft sleeve 24 again, and the inner shaft sleeve 26 and the outer shaft sleeve 24 are driven to rotate synchronously by the driving spline shaft 23, realizing the cyclic feeding action of the four elastic arc plates 21.

[0059] Please refer to Figure 1 - Figure 4, The main function of the film supply mechanism 3 is to provide the polarizer assembly for the attaching process. It consists of a feeding roller 31, a film covering winding roller 32 and a bottom film winding roller 33. The polarizer assembly to be attached is placed on the feeding roller 31, and this assembly is composed of a bottom film 302, a film covering 303 and a flexible polarizer 301 wrapped between the two. During the attaching process, the bottom film winding roller 33 is responsible for winding the bottom film 302, and the film covering winding roller 32 winds the film covering 303, thereby gradually releasing the flexible polarizer 301 to get ready for the attaching.

[0060] The film supply mechanism 3 further includes a guiding plate 34, and the guiding plate 34 plays a key guiding role during the transportation and attaching of the polarizer. A pushing cylinder 35 is fixedly installed on the frame 1, and the piston rod of the pushing cylinder 35 is connected to the guiding plate 34. Through the telescopic movement of the pushing cylinder 35, the guiding plate 34 can be driven to displace in the horizontal direction, and the specific pushing distance and pushing rate of the pushing cylinder 35 are adaptively changed by the curvature of the elastic arc plate 21. A attaching roller 341 is rotatably connected to one side of the guiding plate 34 close to the rotary feeding mechanism 2. The attaching roller 341 can play an auxiliary pressing role when the polarizer is attached to the flexible display screen 8 to ensure a tight attachment. The bottom film winding roller 33 flatly attaches the polarizer assembly with the film covering 303 removed to the upper surface of the guiding plate 34 through a guiding roller, and through the winding drive, the polarizer is smoothly transported along the guiding plate 34 to a position corresponding to the rotary feeding mechanism 2 for the attaching operation.

[0061] Further, please refer to Figure 1 - Figure 3 , A loading and unloading manipulator 4 is fixedly installed on the frame 1 at the top of the rotary feeding mechanism 2. The loading and unloading manipulator 4 adopts a high-precision robotic arm structure and is equipped with a clamping device, which can accurately clamp the flexible display screen 8 with the flexible polarizer 301 to be attached. At the beginning of the attaching process, the loading and unloading manipulator 4 accurately places the flexible display screen 8 from the feeding position on the elastic arc plate 21 at the top. After the attaching is completed, it can also take the flexible display screen 8 with the attached polarizer from the elastic arc plate 21 and place it at the discharging position, realizing the automated loading and unloading operation of the entire attaching process and greatly improving the attaching efficiency.

[0062] The frame 1 is provided with a vacuum exhaust mechanism 5 at the bottom of the rotary feeding mechanism 2. The vacuum exhaust mechanism 5 mainly consists of a gantry seat 55, an upper box body 53, a bottom plate 51, buffer springs 52, slide rods 54 and a sealing skirt 531. The gantry seat 55 is fixed to the bottom of the frame 1, with the upper box body 53 installed on its top and the bottom plate 51 installed on its bottom. Buffer springs 52 are arranged on both the upper and lower sides of the bottom plate 51. The buffer springs 52 can play a buffering role when the vacuum exhaust mechanism 5 is working, reducing the scratching phenomenon on the flexible display screen 8 adsorbed on the elastic arc plate 21. Specifically, the four corners between the bottom plate 51 and the upper box body 53 are fixedly connected by slide rods 54, and the gantry seat 55 is provided with sliding sleeves matching the slide rods 54 to ensure the smooth movement of the upper box body 53 in the vertical direction. A sealing skirt 531 is fixed to the top of the upper box body 53, and an exhaust solenoid valve is also provided on one side of the upper box body 53. A sealing ring 211 matching the sealing skirt 531 is fixed to the top of the elastic arc plate 21.

[0063] When the flexible display screen 8 adsorbed on the elastic arc plate 21 runs to the top of the vacuum exhaust mechanism 5, the sealing skirt 531 is initially aligned with the sealing ring 211 of the elastic arc plate 21. At this time, with the negative pressure effect of the vacuum adsorption holes 212, the upper box body 53 and the bottom plate 51 rise, so that the sealing skirt 531 and the sealing ring 211 are closely attached to form a sealed space. Then, through the negative pressure action of the vacuum adsorption holes 212, the air between the flexible display screen 8 and the flexible polarizer 301 is pumped out, effectively removing the attached bubbles and improving the attachment quality. When the removal is completed, the exhaust solenoid valve on the upper box body 53 is opened, and the upper box body 53 and the bottom plate 51 move down by using the buffer springs 52 to realize the separation of the upper box body 53 and the elastic arc plate 21.

[0064] On one side of the rotary feeding mechanism 2 away from the film feeding mechanism 3, a vision inspection mechanism 6 is fixedly installed on the frame 1. The vision inspection mechanism 6 uses a high-resolution industrial camera and advanced image processing algorithms to be able to detect the attachment state of the flexible polarizer 301 on the flexible display screen 8 in real time and accurately. It can detect problems such as whether the attachment position of the polarizer is accurate, whether there are bubbles, and whether there are defects on the surface of the polarizer. Once an attachment defect is detected, the system will immediately issue an alarm and feedback the relevant data to the control system so that the operator can make timely adjustments to ensure the attachment quality, and feedback to the loading and unloading manipulator 4. The loading and unloading manipulator 4 transports the defective flexible display screen 8 to the defective product channel.

[0065] Specific working principle: In the preparation stage, according to the shape and attachment requirements of the flexible display screen 8, the control system starts the drive motor 201 and the electromagnetic ring 27. The output shaft of the drive motor 201 drives the inner shaft sleeve 26 to rotate independently and fixes the outer shaft sleeve 24. The independent rotation of the inner shaft sleeve 26 drives the outer adjustment disc 221 to rotate, thereby changing the spacing of the arc length adjustment plate 213 and the depth of the radial adjustment plate 215 in the radial sliding groove 242, achieving precise adjustment of the curvature of the elastic arc plate 21. The change in the curvature of the elastic arc plate 21 enables the flexible display screen 8 to better adapt to the shape of the polarizer, further improving the attachment effect.

[0066] After the curvature of the elastic arc plate 21 is adjusted, the outer shaft sleeve 24 and the inner shaft sleeve 26 rotate synchronously. The loading and unloading manipulator 4 grabs the flexible display screen 8 to which the flexible polarizer 301 is to be attached under the command of the control system. Subsequently, the robotic arm moves along the preset path and gently places the flexible display screen 8 at the designed position of the elastic arc plate 21 on the top of the rotary feeding mechanism 2. At this time, the vacuum adsorption holes 212 on the elastic arc plate 21 generate negative pressure under the action of the vacuum pump, firmly adsorbing the flexible display screen 8 to ensure that it does not displace during subsequent operations.

[0067] The film feeding mechanism 3 is started, and the feeding roller 31 rotates to release the polarizer assembly. At the same time, the bottom film winding roller 33 rotates synchronously to wind up the bottom film 302, and the film laminating winding roller 32 also starts to work to wind up the film laminate 303. As the bottom film 302 and the film laminate 303 are wound up, the flexible polarizer 301 is gradually exposed and is guided by the guide roller to lie flat on the upper surface of the guide plate 34. The pushing cylinder 35 drives the guide plate 34 to move horizontally according to the command of the control system, transporting the polarizer to the position opposite to the rotary feeding mechanism 2 and waiting for attachment.

[0068] The rotary feeding mechanism 2 starts to rotate driven by the drive motor, causing the elastic arc plate 21 adsorbed with the flexible display screen 8 to rotate to the position opposite to the guide plate 34. At this time, the attachment roller 341 applies a certain pressure to the polarizer under the control of the control system, attaching the polarizer from the guide plate 34 to the flexible display screen 8. During the attachment process, by precisely controlling the pressure and rotation speed of the attachment roller 341, as well as the position and angle of the elastic arc plate 21, it is ensured that the polarizer and the flexible display screen 8 are closely and evenly attached, avoiding wrinkles or bubbles.

[0069] When the elastic arc plate 21 rotates above the upper box body 53, the sealing skirt 531 fits tightly with the sealing ring 211 at the top of the elastic arc plate 21, forming a sealed space. At this time, the vacuum adsorption holes 212 on the elastic arc plate 21 are connected to the vacuum system of the vacuum exhaust mechanism 5, and under the action of negative pressure, the air between the flexible display screen 8 and the flexible polarizer 301 is pumped out, effectively removing attachment bubbles.

[0070] The rotating feeding mechanism 2 continues to rotate, moving the attached flexible display screen 8 to the position of the vision inspection mechanism 6. The high-resolution industrial camera of the vision inspection mechanism 6 takes pictures of the attachment state of the flexible polarizer 301 on the flexible display screen 8, and the captured images are transmitted to the image processing system. The image processing system analyzes the images using advanced algorithms to detect the attachment position accuracy of the polarizer, whether there are bubbles, and whether there are defects on the surface of the polarizer. If attachment defects are detected, the system immediately issues an alarm and feeds back the defect information to the control system. The control system adjusts the subsequent attachment operation parameters according to the feedback information or prompts the operator for manual intervention.

[0071] After the inspection is completed, if the attachment quality is qualified, the loading and unloading manipulator 4 acts again, removes the flexible display screen 8 with the attached polarizer from the elastic arc plate 21, and places it at the discharging position, completing a complete attachment process. If the attachment quality is unqualified, the loading and unloading manipulator 4 transfers the unqualified products to a specific position for processing, and at the same time, the equipment continues to run for the next attachment operation. In this way, the efficient and high-quality attachment production of the flexible display screen polarizer is realized.

[0072] Aiming at the problem that traditional devices are difficult to accurately position and fix flexible display screens, the rotating feeding mechanism 2 of the present invention can accurately adjust the curvature of the elastic arc plate 21 according to the different shapes and curvatures of the flexible display screen 8 through the elastic arc plate 21 and its curvature adjustment design. The cooperation of the inner shaft sleeve 26, the curvature adjustment mechanism 22 and various components enables the elastic arc plate 21 to closely fit the flexible display screen 8, ensuring that it does not displace during the attachment process, thereby realizing the accurate attachment of the polarizer and effectively avoiding display quality problems such as distorted display images and uneven edges caused by attachment position deviation.

[0073] During the attachment stage, by accurately controlling the pressure, rotation speed of the attachment roller 341, and the position and angle of the elastic arc plate 21, the polarizer is closely and evenly attached to the flexible display screen 8. This process effectively avoids the generation of wrinkles, further improves the accuracy and integrity of the display screen, and improves the quality of liquid crystal display products.

[0074] The present invention is provided with a vacuum exhaust mechanism 5 specifically cooperating with the elastic arc plate 21. When the elastic arc plate 21 runs to the position of the vacuum exhaust mechanism 5, the upper box body 53 rises to closely fit with the sealing ring 211 at the top of the elastic arc plate 21 to form a sealed space. Through the negative pressure effect of the vacuum adsorption holes 212, the air between the flexible display screen 8 and the flexible polarizer 301 is pumped out, effectively removing the attachment bubbles. This not only improves the visual effect of the display screen, avoids the appearance of bright spots or dark spots, but also prevents the partial detachment of the polarizer and the display screen caused by bubbles during long-term use, greatly extending the service life of the product.

[0075] The application of the loading and unloading manipulator 4 realizes the automatic loading and unloading operation in the whole attaching process. Under the instruction of the control system, the manipulator can quickly and accurately grasp and place the flexible display screen 8, greatly saving the time of manual loading and unloading, improving the attaching efficiency, and meeting the requirements of large-scale production for efficiency.

[0076] The design of the rotary feeding mechanism 2 enables the attaching operation to be carried out continuously. While attaching on one elastic arc plate 21, other elastic arc plates 21 can perform different operations such as feeding and detection. Each link cooperates closely, greatly shortening the attaching cycle of a single product, improving the overall production efficiency, reducing the production cost, and enhancing the competitiveness of the enterprise in the market.

[0077] The vision detection mechanism 6 adopts a high-resolution industrial camera and advanced image processing algorithms, and can detect the attaching state of the flexible polarizer 301 on the flexible display screen 8 in real time and accurately. Once attaching defects are detected, such as inaccurate attaching position of the polarizer, the existence of bubbles or surface defects, etc., the system immediately issues an alarm and feeds back the relevant data to the control system.

[0078] Compared with the prior art, the present invention has made remarkable progress in aspects such as precise positioning, bubble removal, attaching efficiency and quality detection through the collaborative work of each mechanism, and has improved the overall level of polarizer attaching in the field of liquid crystal display technology.

[0079] The above is only the best implementation mode adopted by this application in combination with the current actual needs, but the protection scope of this application is not limited thereto.

Claims

1. An intelligent polarizer attaching device, comprising a rotating feeding mechanism (2) and a film feeding mechanism (3) arranged on a frame (1), characterized in that: The rotary feeding mechanism (2) comprises an outer sleeve (24), four groups of elastic arc plates (21) are evenly distributed at equal angles on the outer sleeve (24), a plurality of vacuum adsorption holes (212) for adsorbing the flexible display screen (8) are provided on the elastic arc plates (21), and an inner sleeve (26) for adjusting the curvature of the elastic arc plates (21) is also provided on the outer sleeve (24); The film supply mechanism (3) comprises a supply roller (31), a coating film winding roller (32) and a base film winding roller (33); the supply roller (31) is used to provide a polarizer assembly, and the polarizer assembly comprises a base film (302) wound by the base film winding roller (33), a coating film (303) wound by the coating film winding roller (32), and a flexible polarizer (301) wrapped between the base film (302) and the coating film (303); The film feeding mechanism (3) also includes a guide plate (34). A push cylinder (35) for driving the guide plate (34) to move horizontally is fixed on the frame (1). The side of the guide plate (34) close to the rotary feeding mechanism (2) is also rotatably connected to an attaching roller (341). The bottom film winding roller (33) flattens the polarizing film assembly with the film (303) removed onto the upper surface of the guide plate (34) through the guide roller and drives the winding.

2. The smart polarizer attaching device according to claim 1, characterized in that: The frame (1) is provided with a loading and unloading manipulator (4) at the top of the rotating feeding mechanism (2), and the loading and unloading manipulator (4) is used to clamp the flexible display screen (8) to which the flexible polarizer (301) is to be attached and place it on the elastic arc plate (21) located at the top; the frame (1) is provided with a visual inspection mechanism (6) at the side of the rotating feeding mechanism (2) away from the film feeding mechanism (3), and the visual inspection mechanism (6) is used to detect the attachment state of the flexible polarizer (301) on the flexible display screen (8); the frame (1) is provided with a vacuum exhaust mechanism (5) at the bottom of the rotating feeding mechanism (2), and the vacuum exhaust mechanism (5) is used to remove bubbles attached between the flexible polarizers (301) on the flexible display screen (8) by using the negative pressure of the vacuum adsorption holes (212).

3. The smart polarizer attaching device according to claim 2, characterized in that: The top of the frame (1) is provided with two groups of symmetrically arranged brackets (7), the outer shaft sleeve (24) is rotatably connected to the tops of the two groups of brackets (7), both ends of the bottom of the elastic arc plate (21) are rotatably connected to arc length adjustment plates (213), the middle section of the bottom of the elastic arc plate (21) is rotatably connected to a radial adjustment plate (215), an adjustment slider (214) is fixed to one end of the arc length adjustment plate (213) away from the elastic arc plate (21), and the outer wall of the outer shaft sleeve (24) is provided with an arc-shaped slide groove (241) matching the adjustment slider (214) and a radial slide groove (242) matching the radial adjustment plate (215); Both ends of the outer shaft sleeve (24) are provided with a bending adjustment mechanism (22), and the bending adjustment mechanism (22) is used to adjust the spacing of the arc length adjustment plate (213) and the depth of the radial adjustment plate (215) in the radial slide groove (242), so as to achieve the purpose of adjusting the curvature of the elastic arc plate (21).

4. The smart polarizer attaching device according to claim 3, characterized in that: The arc length adjustment plates (213) are each provided with two groups of symmetrically arranged guide holes (217); a circular guide rail (243) matching the guide holes (217) is fixed to the outer wall of the outer sleeve (24); a tensioning spring (244) is sleeved between the two groups of arc length adjustment plates (213); and the tensioning spring (244) has an elastic force for driving the two groups of arc length adjustment plates (213) to move away from each other.

5. The smart polarizer attaching device according to claim 3, characterized in that: The bending adjustment mechanism (22) comprises an outer adjustment disk (221) and an inner adjustment disk (222); the outer adjustment disk (221) is provided with four groups of arc-shaped grooves; the inner adjustment disk (222) is provided with four groups of radial straight-mouth grooves; and an adjustment roller (25) is provided between adjacent elastic arc plates (21); two ends of the adjustment roller (25) extend into corresponding arc-shaped grooves and straight-mouth grooves, respectively.

6. The smart polarizer attaching device according to claim 5, characterized in that: The two groups of inner sleeves (26) are symmetrical along the axis of the outer sleeve (24) and are slidably sleeved in the outer sleeve (24); a second spline shaft (261) is fixed to the opposite ends of the two groups of inner sleeves (26); the inner wall of the outer sleeve (24) is provided with a second spline groove (245) matching the second spline shaft (261); an electromagnetic ring (27) is also fixed to the middle of the inner wall of the outer sleeve (24); and a return spring (28) is clamped between the opposite ends of the two groups of inner sleeves (26); The outer adjustment disk (221) is fixed to an end of the inner sleeve (26) away from the second spline shaft (261), and the inner adjustment disk (222) is fixed to the end of the outer sleeve (24). A drive motor (201) is also fixed to the frame (1), and a drive spline shaft (23) is fixed to the output end of the drive motor (201). The inner sleeve (26) is provided with a first spline groove (262) matching the drive spline shaft (23). A bearing seat corresponding to the end of the outer sleeve (24) is provided on the top of the bracket (7), and a locking mechanism for locking the outer sleeve (24) in a time-sharing manner is provided on the bearing seat.

7. The smart polarizer attaching device according to claim 6, characterized in that: The locking mechanism comprises a locking outer tooth (71) fixed to one side of the bearing seat of the bracket (7); one end of the inner sleeve (26) away from the second spline shaft (261) is rotatably connected to a rotating ring (29); one side of the rotating ring (29) is fixed with a locking inner tooth (291) matching with the locking outer tooth (71); a limiting slide block (292) is fixed to the inner side of the circular ring of the locking inner tooth (291); and the end of the outer sleeve (24) is provided with a limiting slide groove (246) matching with the limiting slide block (292).

8. The smart polarizer attaching device according to claim 6, characterized in that: The return spring (28) has an elastic force that drives the two groups of inner sleeves (26) away from each other, and the electromagnetic ring (27) has a magnetic attraction force on the opposite ends of the two groups of inner sleeves (26) when the power is on. The electromagnetic ring (27) has a magnetic attraction force on the radial adjustment plate (215) when the power is on. Locking racks (216) are provided on both sides of the radial adjustment plate (215), and a locking bag (2421) matching the locking rack (216) is provided in the radial slide groove (242), and the locking bag (2421) is filled with magnetorheological fluid.

9. The smart polarizer attaching device according to claim 2, characterized in that: The vacuum exhaust mechanism (5) comprises a gantry seat (55) fixed at the bottom of the frame (1); an upper box body (53) is provided at the top of the gantry seat (55); a bottom plate (51) is provided at the bottom of the gantry seat (55); buffer springs (52) are provided on the upper and lower sides of the bottom plate (51); the bottom plate (51) and the four corners of the upper box body (53) are fixedly connected by sliding rods (54); a sliding sleeve matching the sliding rod (54) is provided on the gantry seat (55); and a sealing skirt (531) is also fixed on the top of the upper box body (53).

10. The smart polarizer attaching device according to claim 9, characterized in that: Place A sealing ring (211) matching with the sealing skirt (531) is fixed on the top of the elastic arc plate (21). An exhaust solenoid valve is also provided on one side of the upper box body (53).

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