Plate overturning device for screen panel film pasting
By using the double-sloping bonding structure and buffer components of the flip-plate device, the problems of misalignment and pressure damage of OCA optical adhesive during the bonding process between the screen panel and the glass cover are solved, achieving a high-precision, low-damage bonding effect and improving product quality and yield.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FUJIAN SHENNAN OPTOELECTRONICS CO LTD
- Filing Date
- 2025-05-30
- Publication Date
- 2026-04-14
AI Technical Summary
In the existing process of bonding screen panels and glass covers, manual operation can easily lead to misalignment or air bubbles in the OCA optical adhesive, and the bonding pressure of the equipment is difficult to control, resulting in low product quality and yield.
The device employs a flip-plate mechanism, which uses an inclined adhesive film carrier plate and a flipping platform to form a double-sloping bonding structure. Combined with a buffer component and a rolling shaft, it dynamically adjusts the bonding process between the OCA optical adhesive and the screen panel to avoid tensile deformation and pressure damage.
It improves bonding accuracy and product quality, reduces bubbles and damage, and increases product yield.
Smart Images
Figure CN224117618U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of screen panel manufacturing technology, and in particular to a flip-plate device for applying film to screen panels. Background Technology
[0002] The bonding between the screen panel and the glass cover in a capacitive touchscreen is a crucial component of the bonding process, and its precision and appearance directly impact product quality and yield. The industry primarily uses OCA optical adhesive for bonding. OCA is an important bonding material, made by creating a substrate-free optical acrylic adhesive, then bonding a release film to the top and bottom layers; it is a thin-film bonding material. After the OCA film is bonded to the screen panel, the screen panel and glass cover are assembled, and then a heating and vacuum process is used to achieve a complete bonding between the screen panel and the glass cover. The bonding precision between the optical adhesive film and the screen panel during this process directly affects the quality of the final product.
[0003] Currently, the mainstream bonding method involves manually grasping and applying OCA optical adhesive to the screen panel. During the bonding process, due to hand shaking or uneven force, the OCA optical adhesive or the screen panel is easily misaligned, resulting in misalignment between the OCA optical adhesive and the screen panel, as well as air bubbles on the OCA optical adhesive surface. This leads to problems such as low bonding efficiency, low bonding accuracy, and poor bonding effect.
[0004] While capacitive touchscreen bonding equipment capable of both rigid and flexible bonding has emerged, these devices primarily employ a flip structure to tilt the OCA optical adhesive onto the screen panel surface. The screen panel is then moved to bond the OCA adhesive to the panel. However, this method relies on the screen panel to press and pull the OCA adhesive during bonding. Excessive pressure can stretch and deform the OCA adhesive or damage the screen panel, while insufficient pressure may prevent the OCA adhesive from shifting or aligning properly, resulting in compromised product quality and low yield. Utility Model Content
[0005] The technical problem to be solved by this utility model is to provide a flip-plate device for screen panel film application, which solves the problems of low yield caused by the easy generation of air bubbles or the difficulty of applying pressure in the existing bonding method.
[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a flip-plate device for applying film to a screen panel, used to attach OCA optical adhesive to a screen panel, comprising:
[0007] The work platform is equipped with conveyor rails distributed along its length. A movable platform that can reciprocate along the conveyor rails is provided on the conveyor rails. A flip platform for adsorbing screen panels is provided in the middle of the work platform. One end of the flip platform is rotatably connected to the work platform through a fixed support.
[0008] A film carrier plate for placing OCA optical adhesive is provided above the movable stage. One end of the film carrier plate is hinged to the fixed support, and the other end of the film carrier plate is connected to the movable stage through a buffer assembly. The buffer assembly lifts the film carrier plate, and when the film carrier plate is compressed, the buffer assembly contracts, thereby changing the relative angle between the film carrier plate and the movable stage.
[0009] The rotating platform rotates around the fixed support, causing the adsorbed screen panel to flip over and be above the adhesive film, so that the side of the screen panel away from the fixed support comes into contact with the side of the adhesive film away from the fixed support.
[0010] In one embodiment, the buffer assembly includes a buffer sleeve, a buffer rod, and a buffer spring. The buffer sleeve is disposed on a movable platform, and the buffer rod and the buffer spring are disposed inside the buffer sleeve. One end of the buffer rod is connected to the buffer spring, and the other end of the buffer rod is hinged to the film carrier plate.
[0011] In one embodiment, the end of the film carrier plate with the buffer assembly is also provided with a rolling shaft, which is connected to the side wall of the film carrier plate through a connecting lug.
[0012] In one embodiment, the connecting ear is hinged to the side wall of the adhesive film carrier plate, the side wall of the adhesive film carrier plate is provided with a limiting rod, and the middle part of the connecting ear is provided with an arc-shaped groove corresponding to the limiting rod, the limiting rod being located in the arc-shaped groove.
[0013] In one embodiment, an adjustment assembly is provided between the rolling roller and the adhesive film carrier plate, the adjustment assembly being used to adjust the relative position of the rolling roller and the adhesive film carrier plate.
[0014] In one embodiment, the adjustment assembly includes a connecting rod and a connecting shaft. The connecting shaft passes through the buffer rod along the width direction of the work platform. The connecting rod is disposed at both ends of the connecting shaft, and the other end of the connecting rod is hinged to the rolling shaft.
[0015] In one embodiment, the surface of the rolling mill is covered with a rubber layer.
[0016] In one embodiment, the flipping stage includes a screen carrier plate, a flipping shaft, and a drive mechanism. One side of the screen carrier plate is connected to the flipping shaft, and both ends of the flipping shaft are hinged to a fixed support. The drive mechanism is connected to the flipping shaft in a transmission manner.
[0017] In one embodiment, a positioning component is further included. The positioning component includes a first positioning member, a second positioning member, and a positioning ear. The positioning ear is disposed at the end of the flipping platform away from the fixed support. The first positioning member is disposed on one side of the working platform, and the second positioning member is disposed on one side of the working platform. The first positioning member and the second positioning member abut against the positioning ear before and after flipping, respectively.
[0018] In one embodiment, a limiting member is also included, which is disposed at the end of the conveying track.
[0019] The beneficial effects of this utility model are as follows: Currently, conventional flip-bonding equipment mainly adopts a structure of placing flat surface and flipping inclined surface. After placing OCA optical adhesive and screen panel respectively, the placing surface is moved. Relying on the adhesiveness of OCA optical adhesive, OCA optical adhesive is pulled and moves with screen panel. The pulling force causes OCA optical adhesive to deform, resulting in misalignment between OCA optical adhesive and screen panel, or damage to screen panel.
[0020] This invention employs an inclined adhesive film carrier plate in conjunction with a flipping platform to form a double-sloped bonding structure. This ensures that when the OCA optical adhesive initially contacts the screen panel, only the edges are pressed together. As the moving platform moves, the adhesive film carrier plate gradually presses against the unbonded parts of the OCA optical adhesive and the screen panel, ensuring full bonding between the OCA optical adhesive and the screen panel. This effectively prevents the OCA optical adhesive from being stretched and deformed by tension, thus guaranteeing the precision and quality of the bonding.
[0021] Furthermore, during the displacement of the moving platform, since the flipping platform is an inclined plane with a gradually decreasing height, if the highest point of the adhesive film carrier does not change, the distance between the highest point of the adhesive film carrier and the flipping platform will continuously decrease until they come into contact. During this process, the OCA optical adhesive and the screen panel are easily damaged, leading to product quality issues. This invention employs a buffer component, allowing the adhesive film carrier to dynamically rotate during movement by changing its relative angle with the moving platform. This ensures the adhesion between the OCA optical adhesive and the screen panel while preventing damage to both. Attached Figure Description
[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0023] Figure 1 This is a top view of an embodiment of the present invention;
[0024] Figure 2This is a front view of an embodiment of the present utility model;
[0025] Figure 3 for Figure 2 A magnified view of a section at point A in the middle;
[0026] Figure 4 This is a schematic diagram of the structure after flipping an embodiment of the present invention;
[0027] Figure 5 This is a schematic diagram of the structure after the present invention has been moved according to an embodiment.
[0028] Label Explanation:
[0029] 1. Working platform; 11. Conveyor track; 12. Limiting component; 13. Fixed support; 2. Moving platform; 21. Adhesive film carrier plate; 211. Limiting rod; 22. Buffer assembly; 221. Buffer sleeve; 222. Buffer rod; 223. Buffer spring; 23. Rolling shaft; 231. Connecting lug; 232. Arc groove; 24. Adjustment assembly; 241. Connecting rod; 242. Connecting shaft; 25. Positioning assembly; 251. First positioning component; 252. Second positioning component; 253. Positioning lug; 3. Flipping platform; 31. Screen carrier plate; 32. Flipping shaft; 4. OCA optical adhesive; 5. Screen panel. Detailed Implementation
[0030] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0031] In the description of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0032] Please refer to Figures 1 to 5 A flip-plate device for applying a screen panel film, used to attach OCA optical adhesive 4 to a screen panel 5, comprising:
[0033] The work platform 1 is provided with a conveyor track 11 distributed along the length direction. A movable platform 2 that can move back and forth along the conveyor track 11 is provided on the conveyor track 11. A flip platform 3 for adsorbing the screen panel 5 is provided in the middle of the work platform 1. One end of the flip platform 3 is rotatably connected to the work platform 1 through a fixed support 13.
[0034] Above the movable stage 2 is a film carrier plate 21 for placing OCA optical adhesive 4. One end of the film carrier plate 21 near the fixed support 13 is hinged to the film carrier plate 21, and the other end of the film carrier plate 21 is connected to the movable stage 2 through a buffer assembly 22. The buffer assembly 22 lifts the film carrier plate 21, and when the film carrier plate 21 is compressed, the buffer assembly 22 contracts, thereby changing the relative angle between the film carrier plate 21 and the movable stage 2.
[0035] The rotating platform 3 rotates around the fixed support 13, causing the adsorbed screen panel 5 to flip over to the top of the adhesive film, so that the side of the screen panel 5 away from the fixed support 13 abuts against the side of the adhesive film away from the fixed support 13.
[0036] Specifically, the flipping stage 3 and the adhesive film carrier plate 21 are equipped with adsorption components for adsorbing and positioning the OCA optical adhesive 4 and the screen panel 5. The adsorption components use L-shaped plates for limiting the position. Those skilled in the art can select appropriate adsorption components as needed to enable the OCA optical adhesive 4 and the screen panel 5 to be accurately positioned and adsorbed, without specific limitations.
[0037] In this embodiment, the buffer assembly 22 includes a buffer sleeve 221, a buffer rod 222, and a buffer spring 223. The buffer sleeve 221 is disposed on the movable platform 2, and the buffer rod 222 and the buffer spring 223 are disposed inside the buffer sleeve 221. One end of the buffer rod 222 is connected to the buffer spring 223, and the other end of the buffer rod 222 is hinged to the film carrier plate 21. That is, the buffer rod 222 and the buffer spring 223 are accommodated inside the buffer sleeve 221. The pressure of the film carrier plate 21 is transmitted to the buffer spring 223 through the buffer rod 222. When the buffer spring 223 is compressed or expanded, the buffer rod 222 moves up and down along the buffer sleeve 221. At the same time, the angle of the film carrier plate 21 relative to the movable platform 2 changes, so that the pressure on the film carrier plate 21 is dynamically maintained within a suitable range.
[0038] Preferably, two sets of buffer components 22 are provided, located on both sides of the conveying track 11. This provides uniform buffering for the adhesive film carrier plate 21, preventing the adhesive film carrier plate 21 from tilting to one side and causing poor adhesion.
[0039] Preferably, a lifting assembly is provided between the adhesive film carrier 21 and the movable stage 2, and the lifting assembly drives the adhesive film carrier 21 to rise and fall as a whole. This further improves the adjustability and adaptability of the flip-plate device for screen panel film application, thereby adapting to the bonding requirements of different specifications of OCA optical adhesive 4 and screen panel 5.
[0040] While the double-sloping design minimizes the stretching and deformation of the OCA optical adhesive 4, relying solely on the edge of the adhesive film carrier 21 to press against the screen panel 5 presents several challenges. First, the sharp edges of the adhesive film carrier 21 may damage the OCA optical adhesive 4. Second, the edges will be subjected to continuous pressure over long-term use, leading to wear, cracking, or deformation of the adhesive film carrier 21, ultimately resulting in damage to the OCA optical adhesive 4 and affecting product quality. Therefore, a rolling shaft 23, distributed along the width of the adhesive film carrier 21, is installed at one end of the buffer assembly 22. The rolling shaft 23 is connected to the side wall of the adhesive film carrier 21 via a connecting lug 231. During the displacement of the moving platform 2, the rolling shaft 23 prioritizes supporting the contact portion of the OCA optical adhesive 4, ensuring full adhesion while further reducing the tensile force on the OCA optical adhesive 4 and preventing deformation.
[0041] After setting the rolling shaft 23, if the rolling shaft 23 is directly fixed, it will be difficult to adjust the pressure when facing screen panels 5 with varying thicknesses, causing overall device issues. Therefore, the connecting ear 231 is hinged to the side wall of the adhesive film carrier 21, allowing the rolling shaft 23 to rotate relative to the adhesive film carrier 21. This adjusts the height of the rolling shaft 23 above the adhesive film carrier 21, controlling the pressure of the rolling shaft 23 on the OCA optical adhesive 4. Simultaneously, the side wall of the adhesive film carrier 21 is provided with a limiting rod 211. An arc-shaped groove 232 is formed in the middle of the connecting ear 231 corresponding to the limiting rod 211. The limiting rod 211 is located within the arc-shaped groove 232. The arc-shaped groove 232 and the limiting rod 211 limit the rotation angle of the rolling shaft 23, preventing the rolling shaft 23 from being too high, resulting in excessive pressure, or too low, resulting in ineffectiveness. Those skilled in the art can adjust the length and curvature of the arc-shaped groove 232 according to actual needs, without specific limitations.
[0042] Preferably, an adjustment assembly 24 is provided between the rolling shaft 23 and the adhesive film carrier plate 21. The adjustment assembly 24 is used to adjust the relative position of the rolling shaft 23 and the adhesive film carrier plate 21. The adjustment assembly 24 can adopt a structure such as a coil spring, so that the rolling shaft 23 can dynamically adjust its relative position with the adhesive film carrier plate 21 after being pressed, further enhancing the overall dynamic adjustment capability of the device.
[0043] If the adjustment component 24 is set alone, although it can adjust the pressure to a certain extent, it cannot be linked with the buffer component 22, and the overall adjustment effect is relatively separate. Therefore, in this embodiment, the adjustment component 24 includes a connecting rod 241 and a connecting shaft 242. The connecting shaft 242 passes through the buffer rod 222 along the width direction of the working platform 1, and the connecting rod 241 is set at both ends of the connecting shaft 242. The other end of the connecting rod 241 is hinged to the rolling shaft 23. That is, the rolling shaft 23 is connected to the buffer rod 222, so that the rolling shaft 23 rotates under pressure and applies pressure to the buffer rod 222, thereby adjusting the angle of the adhesive film carrier plate 21 as a whole. This makes the buffer component 22 and the adjustment component 24 form a dynamic adjustment system, further enhancing the buffer adjustment effect and ensuring the final bonding effect.
[0044] In this embodiment, the surface of the rolling shaft 23 is covered with a rubber layer.
[0045] In this embodiment, the flip platform 3 includes a screen carrier plate 31, a flip shaft 32 and a drive mechanism. One side of the screen carrier plate 31 is connected to the flip shaft 32, and both ends of the flip shaft 32 are hinged to the fixed support 13. The drive mechanism is connected to the flip shaft 32 in a transmission manner.
[0046] In this embodiment, the screen panel film-applying flip device further includes a positioning component 25. The positioning component 25 includes a first positioning member 251, a second positioning member 252, and a positioning ear 253. The positioning ear 253 is disposed at the end of the flipping platform 3 away from the fixed support 13. The first positioning member 251 is disposed on one side of the working platform 1, and the second positioning member 252 is disposed on one side of the working platform 1. The first positioning member 251 and the second positioning member 252 respectively abut against the positioning ear 253 before and after flipping. The positioning component 25 is used to control the position of the flipping platform 3 before and after flipping, preventing the flipping platform 3 from directly contacting other structures and preventing damage to the screen panel 5.
[0047] In this embodiment, a limiting member 12 is also included, which is disposed at the end of the conveying track 11.
[0048] Although this document uses terms such as working platform, conveyor track, and limiting component frequently, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.
[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.
Claims
1. A flip-plate device for applying a screen panel film, used to attach OCA optical adhesive (4) to a screen panel (5), characterized in that, include: The work platform (1) is provided with a conveying track (11) distributed along the length direction. A movable platform (2) is provided on the conveying track (11) and can move back and forth along the conveying track (11). A flipping platform (3) for adsorbing the screen panel (5) is provided in the middle of the work platform (1). One end of the flipping platform (3) is rotatably connected to the work platform (1) through a fixed support (13). Above the movable stage (2) is a film carrier plate (21) for placing the OCA optical adhesive (4). One end of the film carrier plate (21) near the fixed support (13) is hinged to the film carrier plate (21), and the other end of the film carrier plate (21) is connected to the movable stage (2) through a buffer assembly (22). The buffer assembly (22) lifts the film carrier plate (21), and when the film carrier plate (21) is compressed, the buffer assembly (22) contracts, thereby changing the relative angle between the film carrier plate (21) and the movable stage (2). The flipping platform (3) rotates around the fixed support (13), causing the adsorbed screen panel (5) to flip over to the top of the adhesive film, so that the side of the screen panel (5) away from the fixed support (13) abuts against the side of the adhesive film away from the fixed support (13).
2. The flip-plate device for applying film to a screen panel according to claim 1, characterized in that: The buffer assembly (22) includes a buffer sleeve (221), a buffer rod (222), and a buffer spring (223). The buffer sleeve (221) is disposed on the movable platform (2). The buffer rod (222) and the buffer spring (223) are disposed inside the buffer sleeve (221). One end of the buffer rod (222) is connected to the buffer spring (223), and the other end of the buffer rod (222) is hinged to the adhesive film carrier plate (21).
3. The flip-plate device for applying film to a screen panel according to claim 2, characterized in that: The adhesive film carrier plate (21) is provided with a buffer assembly (22) at one end and a rolling shaft (23) is provided at the other end. The rolling shaft (23) is connected to the side wall of the adhesive film carrier plate (21) through a connecting lug (231).
4. The flip-plate device for applying film to a screen panel according to claim 3, characterized in that: The connecting ear (231) is hinged to the side wall of the adhesive film carrier (21). The side wall of the adhesive film carrier (21) is provided with a limiting rod (211). The middle part of the connecting ear (231) is provided with an arc groove (232) corresponding to the limiting rod (211). The limiting rod (211) is located in the arc groove (232).
5. The flip-plate device for applying film to a screen panel according to claim 3, characterized in that: An adjustment component (24) is provided between the rolling shaft (23) and the adhesive film carrier plate (21). The adjustment component (24) is used to adjust the relative position of the rolling shaft (23) and the adhesive film carrier plate (21).
6. The flip-plate device for applying film to a screen panel according to claim 5, characterized in that: The adjustment assembly (24) includes a connecting rod (241) and a connecting shaft (242). The connecting shaft (242) passes through the buffer rod (222) along the width direction of the working platform (1). The connecting rod (241) is located at both ends of the connecting shaft (242), and the other end of the connecting rod (241) is hinged to the rolling shaft (23).
7. The flip-plate device for applying film to a screen panel according to claim 3, characterized in that: The surface of the rolling shaft (23) is covered with a rubber layer.
8. The flip-plate device for applying film to a screen panel according to claim 1, characterized in that: The flip platform (3) includes a screen carrier plate (31), a flip shaft (32) and a drive mechanism. One side of the screen carrier plate (31) is connected to the flip shaft (32). Both ends of the flip shaft (32) are hinged to the fixed support (13). The drive mechanism is connected to the flip shaft (32) in a transmission manner.
9. The flip-plate device for applying film to a screen panel according to claim 1, characterized in that: It also includes a positioning component (25), which includes a first positioning element (251), a second positioning element (252) and a positioning ear (253). The positioning ear (253) is disposed at one end of the flipping platform (3) away from the fixed support (13). The first positioning element (251) is disposed on one side of the working platform (1), and the second positioning element (252) is disposed on one side of the working platform (1). The first positioning element (251) and the second positioning element (252) respectively abut against the positioning ear (253) before and after flipping.
10. The flip-plate device for applying film to a screen panel according to claim 1, characterized in that: It also includes a limiting member (12), which is disposed at the end of the conveying track (11).