Optically transparent adhesive bonding bubble elimination device

Abstract

The utility model discloses an optical transparent glue bubble elimination device of pasting belongs to optical transparent glue production technical field. This kind of optical transparent glue bubble elimination device of pasting, including base assembly. First elimination mechanism and second elimination mechanism, first elimination mechanism sets up in the outside of base assembly, and second elimination mechanism sets up in the top of base assembly, and first elimination mechanism is used for carrying out transverse defoaming to optical transparent glue, and second elimination mechanism is used for carrying out vertical defoaming to optical transparent glue, and second elimination mechanism includes two supports, and one pair of ball screws is rotatably connected between two supports, and the outside of one pair of ball screws is all threadedly connected with the sliding seat, and the bottom of one pair of sliding seats is all installed with second connecting plate, and the rotatable connection of one pair of second connecting plates has second extruding roller, and one end of one pair of ball screws all extends to the outside through one of the support and is equipped with synchronous wheel, and the synchronous belt is around the setting between one pair of synchronous wheels.

Description

Technical Field

[0001] This utility model relates to the field of optical transparent adhesive production technology, specifically to a device for eliminating air bubbles in optical transparent adhesive bonding. Background Technology

[0002] Optical transparent adhesive is a type of double-sided bonding tape made by creating a substrate-free optical acrylic adhesive and then bonding a release film to the top and bottom layers. The upper and lower release films have different release forces than the adhesive itself and are conventionally referred to as light release film and heavy release film. Optical transparent adhesive is used to bond the cover glass of a touchscreen to the display panel, giving the screen good light transmittance and touch performance; it is the best adhesive for touchscreens.

[0003] For example, Chinese Patent CN212441156U discloses an OCA optical adhesive defoaming device, which solves the problem of the complicated and incomplete removal of air bubbles in OCA optical adhesive. The device includes a base plate, a bottom groove fixedly installed in the middle of the top of the base plate, a lower scraper fixedly installed at one end of the inner cavity of the bottom groove, a lower roller assembly installed on one side of the inner cavity of the bottom groove, H-shaped brackets fixedly installed on both sides of the bottom groove, a top plate above the base plate, an upper scraper fixedly installed at one end of the bottom of the top plate, a fixing mechanism installed on one side of the bottom of the top plate, and n-shaped brackets fixedly installed on both sides of the top plate. This OCA optical adhesive defoaming device can conveniently solve the problem of air bubbles in OCA optical adhesive, and the defoaming process is simple and effective. Furthermore, this OCA optical adhesive defoaming device can completely remove air bubbles from the optical adhesive, thereby improving the production and processing efficiency of OCA optical adhesive.

[0004] The technical solution described in this paper can only defoam the optically transparent adhesive in one direction during actual use. It is not convenient to defoam the optically transparent adhesive in the vertical direction. As a result, the air bubbles in the vertical direction of the optically transparent adhesive cannot be effectively eliminated, and the optically transparent adhesive will still have air bubbles, which will affect the transparency, flatness and other properties of the optically transparent adhesive. Utility Model Content

[0005] The purpose of this invention is to provide an optically transparent adhesive bonding bubble elimination device to solve the problems mentioned in the background art.

[0006] In view of the above problems, the technical solution proposed by this utility model is as follows:

[0007] An optically transparent adhesive bonding bubble elimination device includes a base assembly, a first elimination mechanism, and a second elimination mechanism. The first elimination mechanism is disposed outside the base assembly, and the second elimination mechanism is disposed above the base assembly. The first elimination mechanism is used to perform horizontal bubble elimination on the optically transparent adhesive, and the second elimination mechanism is used to perform vertical bubble elimination on the optically transparent adhesive. The second elimination mechanism includes two supports, and a pair of ball screws are rotatably connected between the two supports. Each pair of ball screws is threadedly connected to a slide, and a second connecting plate is mounted on the bottom end of each pair of slides. A second extrusion roller is rotatably connected between the pair of second connecting plates.

[0008] Furthermore, one end of each pair of ball screws extends outward through one of the supports and is fitted with a timing pulley, and a timing belt is wound between the pair of timing pulleys.

[0009] The beneficial effect of adopting the above-mentioned further solution is that, through the coordinated use of the timing pulley and timing belt, a pair of ball screws can rotate synchronously, thereby enabling the two slides to move synchronously on the ball screws, improving the uniformity and effect of defoaming.

[0010] Furthermore, a servo motor is mounted on one side of the back of another of the supports, and the output end of the servo motor is connected to one of the ball screws.

[0011] The beneficial effect of adopting the above-mentioned further solution is that by setting a servo motor, the ball screw can be driven to rotate when the servo motor is working.

[0012] Furthermore, the base assembly includes a workbench, and hydraulic rods are installed on both sides of the bottom end of the two supports. Each of the two hydraulic rods is connected to a vertical plate at the end away from the support, and one side of the vertical plate is fixedly connected to the outer wall of the workbench.

[0013] The beneficial effect of adopting the above-mentioned further solution is that by setting up a hydraulic rod, when the hydraulic rod is working, its movable end drives the support to rise and fall, adjusting the height of the support, so as to facilitate the subsequent vertical defoaming of the optical transparent adhesive on the worktable.

[0014] Furthermore, the first elimination mechanism includes two pairs of square seats, one pair of which is respectively installed on the front and back of the workbench. A round rod is installed at the top of each pair of square seats. A connecting seat is provided at the upper end of each of the two round rods. A first connecting plate is installed at the upper end of each of the two connecting seats. A first extrusion roller is rotatably connected between the two first connecting plates.

[0015] The beneficial effect of adopting the above-mentioned further solution is that, through the coordinated use of two pairs of square seats, round rods, connecting seats, and the first connecting plate, by pulling the left first extrusion roller upward, a gap is created between the left first extrusion roller and the top surface of the worktable. Then, the optically transparent adhesive, after being bonded by the bonding machine, passes through the left first extrusion roller. The optically transparent adhesive is then pulled further to pass through the right first extrusion roller, performing a horizontal defoaming operation on the optically transparent adhesive. When the left and right first extrusion rollers are pulled upward, the square plate slides upward within the square cavity of the round rod, compressing the spring. After the optically transparent adhesive line passes through the left first extrusion roller, the left first extrusion roller is slowly released, allowing it to compress one side of the optically transparent adhesive. Then, the optically transparent adhesive is manually pulled towards the right first extrusion roller to achieve horizontal defoaming, allowing the manually pulled end of the optically transparent adhesive to pass through the right first extrusion roller. The right first extrusion roller is then slowly released, allowing it to compress the other side of the optically transparent adhesive, facilitating subsequent vertical defoaming of the optically transparent adhesive.

[0016] Furthermore, there are two first extrusion rollers, and the distance between the two first extrusion rollers is greater than the length of the second extrusion roller.

[0017] The beneficial effect of adopting the above-mentioned further solution is that the two first extrusion rollers can perform more comprehensive lateral defoaming on the optically transparent adhesive. Since the distance between the two first extrusion rollers is greater than the length of the second extrusion roller, the optically transparent adhesive is defoamed vertically by the second defoaming mechanism after being defoamed laterally by the first defoaming mechanism.

[0018] Furthermore, a square cavity is formed inside the round rod, and a square plate is provided inside the square cavity. The outer wall of the square plate is slidably fitted with the inner wall of the square cavity. A connecting rod is installed on the top surface of the square plate. The upper end of the connecting rod passes through the round rod and is fixedly connected to the bottom end of the connecting seat. A spring is sleeved on the outside of the connecting rod, and the two ends of the spring are fixedly connected to the top surface of the square plate and the top end of the inside of the round rod, respectively.

[0019] The beneficial effect of adopting the above-mentioned further solution is that when the left first extrusion roller and the second extrusion roller are pulled upward, the square plate slides upward in the square cavity of the round rod and squeezes the spring. After the optically transparent adhesive line passes through the left first extrusion roller and the right first extrusion roller, the left first extrusion roller and the right first extrusion roller are slowly released, so that they squeeze the optically transparent adhesive on both sides under the elastic force of the spring.

[0020] Compared with the prior art, the beneficial effects of this utility model are as follows: This optically transparent adhesive bonding bubble elimination device works by pulling the left and right first extrusion rollers upwards, causing the square plate to slide upwards within the square cavity of the round rod and compressing the spring. After the optically transparent adhesive line passes through the left first extrusion roller, the left first extrusion roller is slowly released, causing it to compress one side of the optically transparent adhesive. Then, the optically transparent adhesive is manually pulled towards the right first extrusion roller to achieve lateral defoaming, allowing the manually pulled end of the optically transparent adhesive to pass through the right first extrusion roller. The right first extrusion roller is then slowly released, causing it to compress the other side of the optically transparent adhesive. The two first extrusion rollers... The roller can perform more comprehensive lateral defoaming on the optically transparent adhesive. When the hydraulic rod is activated, its movable end moves the support downward, adjusting the height of the support so that the second extrusion roller contacts the worktable. When the servo motor is activated, it drives the ball screw to rotate. With the cooperation of the synchronous pulley and synchronous belt, the pair of ball screws can rotate synchronously, so that the two slides can move synchronously on the ball screws. Since the distance between the two first extrusion rollers is greater than the length of the second extrusion roller, after the optically transparent adhesive has undergone lateral defoaming by the first elimination mechanism, it is then subjected to vertical defoaming by the second extrusion roller, improving the uniformity and effectiveness of defoaming. Attached Figure Description

[0021] Figure 1 A three-dimensional structural diagram of an optical transparent adhesive bonding bubble elimination device provided by this utility model;

[0022] Figure 2 A three-dimensional structural diagram of the first elimination mechanism of an optical transparent adhesive bonding bubble elimination device provided by this utility model;

[0023] Figure 3 A front cross-sectional view of a circular rod for an optically transparent adhesive bubble elimination device provided by this utility model;

[0024] Figure 4 A three-dimensional structural diagram of the second elimination mechanism of an optical transparent adhesive bonding bubble elimination device provided by this utility model.

[0025] In the diagram: 1. Base assembly; 11. Workbench; 2. First elimination mechanism; 21. Square seat; 22. Round rod; 23. Square chamber; 24. Square plate; 25. Connecting rod; 26. Connecting seat; 27. First connecting plate; 28. Spring; 29. ​​First extrusion roller; 3. Second elimination mechanism; 31. Vertical plate; 32. Hydraulic rod; 33. Support; 34. Ball screw; 35. Slide; 36. Second connecting plate; 37. Second extrusion roller; 38. Servo motor; 39. Synchronous pulley; 310. Synchronous belt. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figures 1-4 This utility model provides a technical solution: an optical transparent adhesive bonding bubble elimination device, including a base assembly 1, a first elimination mechanism 2, and a second elimination mechanism 3. The first elimination mechanism 2 is disposed outside the base assembly 1, and the second elimination mechanism 3 is disposed above the base assembly 1. The first elimination mechanism 2 is used to perform horizontal defoaming on the optical transparent adhesive, and the second elimination mechanism 3 is used to perform vertical defoaming on the optical transparent adhesive. The second elimination mechanism 3 includes two supports 33, and a pair of ball screws 34 are rotatably connected between the two supports 33. Each pair of ball screws 34 is threadedly connected to a slide 35. A second connecting plate 36 is installed at the bottom end of each pair of slides 35, and a second extrusion roller 37 is rotatably connected between the pair of second connecting plates 36. By setting the first and second defoaming mechanisms, the optical transparent adhesive processed by the bonding machine is subjected to comprehensive defoaming treatment.

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Please see Figures 1-4This utility model provides a technical solution: one end of each pair of ball screws 34 extends through one of the supports 33 to the outside and is fitted with a synchronous pulley 39. A synchronous belt 310 is wound between the pair of synchronous pulleys 39. A servo motor 38 is installed on one side of the back of the other support 33. The output end of the servo motor 38 is connected to one of the ball screws 34 for transmission. The base assembly 1 includes a worktable 11. Hydraulic rods 32 are installed on both sides of the bottom end of the two supports 33. The two hydraulic rods 32 are connected to a vertical plate 31 at the end away from the support 33. The surface is fixedly connected to the outer wall of the worktable 11. By setting a servo motor 38, when the servo motor 38 is working, it drives the ball screw 34 to rotate. Through the cooperation of the synchronous pulley 39 and the synchronous belt 310, the pair of ball screws 34 can rotate synchronously, so that the two slides 35 can move synchronously on the ball screws 34, improving the uniformity and effect of defoaming. By setting a hydraulic rod 32, when the hydraulic rod 32 is working, its movable end drives the support 33 to rise and fall, adjusting the height of the support 33 to facilitate the subsequent vertical defoaming of the optical transparent adhesive on the worktable 11.

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Please see Figures 1-4This utility model provides a technical solution: the first elimination mechanism 2 includes two pairs of square seats 21, one pair of square seats 21 being installed on the front and back of the workbench 11 respectively. A round rod 22 is installed at the top of each pair of square seats 21. A connecting seat 26 is provided at the upper end of each of the two round rods 22. A first connecting plate 27 is installed at the upper end of each of the two connecting seats 26. A first pressing roller 29 is rotatably connected between the two first connecting plates 27. There are two first pressing rollers 29, and the distance between the two first pressing rollers 29 is greater than the length of the second pressing roller 37. The round rod 22 has an opening inside. There is a square chamber 23, inside which is a square plate 24. The outer wall of the square plate 24 slides against the inner wall of the square chamber 23. A connecting rod 25 is installed on the top surface of the square plate 24. The upper end of the connecting rod 25 passes through a round rod 22 and is fixedly connected to the bottom end of a connecting seat 26. A spring 28 is sleeved on the outside of the connecting rod 25. The two ends of the spring 28 are fixedly connected to the top surface of the square plate 24 and the inner top end of the round rod 22, respectively. Through the cooperation of two pairs of square seats 21, round rods 22, connecting seats 26 and the first connecting plate 27, the first extrusion roller 2 on the left side is pulled upward. 9. This creates a gap between the left first extrusion roller 29 and the top surface of the worktable 11. Then, the optically transparent adhesive, after being bonded by the laminating machine, passes through the left first extrusion roller 29. The optically transparent adhesive is then pulled to pass through the right first extrusion roller 29, performing a lateral defoaming operation. When the left and right first extrusion rollers 29 are pulled upwards, the square plate 24 slides upwards within the square cavity of the round rod 22, compressing the spring 28. After the optically transparent adhesive line passes through the left first extrusion roller 29, the left first extrusion roller 29 is slowly released, allowing it to align with the light. After squeezing one side of the optical transparent adhesive and then manually pulling it towards the right first squeezing roller 29 to achieve horizontal defoaming, the manually pulled end of the optical transparent adhesive passes through the right first squeezing roller 29. Then, slowly release the right first squeezing roller 29 to squeeze the other side of the optical transparent adhesive. Since the distance between the two first squeezing rollers 29 is greater than the length of the second squeezing roller 37, the optical transparent adhesive undergoes vertical defoaming through the second defoaming mechanism 3. After the vertical defoaming is completed, continue pulling the optical transparent adhesive. The two first squeezing rollers 29 can perform more comprehensive horizontal defoaming on the optical transparent adhesive.

[0032] Specifically, the working principle of this optically transparent adhesive bonding bubble elimination device is as follows: During use, by pulling upwards the left and right first extrusion rollers 29, the square plate 24 slides upwards within the square cavity of the round rod 22, compressing the spring 28. After the optically transparent adhesive line passes through the left first extrusion roller 29, the left first extrusion roller 29 is slowly released, causing it to compress one side of the optically transparent adhesive. Then, the optically transparent adhesive is manually pulled towards the right first extrusion roller 29 to achieve lateral bubble elimination, allowing the manually pulled end of the optically transparent adhesive to pass through the right first extrusion roller 29. The right first extrusion roller 29 is then slowly released, causing it to compress the other side of the optically transparent adhesive. When the hydraulic rod 32 is activated, its movable end drives the support 33 downwards. The height of the support 33 is adjusted so that the second extrusion roller 37 contacts the worktable 11. When the servo motor 38 is started, it drives the ball screw 34 to rotate. With the cooperation of the synchronous pulley 39 and the synchronous belt 310, the pair of ball screws 34 can rotate synchronously, so that the two slides 35 can move synchronously on the ball screw 34. Since the distance between the two first extrusion rollers 29 is greater than the length of the second extrusion roller 37, the optical transparent adhesive is defoamed vertically by the second elimination mechanism 3. After the vertical defoaming is completed, the optical transparent adhesive is pulled further, and the two first extrusion rollers 29 can perform more comprehensive horizontal defoaming on the optical transparent adhesive.

Claims

1. A device for eliminating air bubbles in optically transparent adhesive bonding, characterized in that, The device includes a base assembly (1), a first defoaming mechanism (2), and a second defoaming mechanism (3). The first defoaming mechanism (2) is located outside the base assembly (1), and the second defoaming mechanism (3) is located above the base assembly (1). The first defoaming mechanism (2) is used to defoam the optical transparent adhesive horizontally, and the second defoaming mechanism (3) is used to defoam the optical transparent adhesive vertically. The second defoaming mechanism (3) includes two supports (33), and a pair of ball screws (34) are rotatably connected between the two supports (33). A slide (35) is threaded to the outside of each pair of ball screws (34). A second connecting plate (36) is installed at the bottom of each pair of slides (35), and a second extrusion roller (37) is rotatably connected between the pair of second connecting plates (36).

2. The optically transparent adhesive bonding bubble elimination device according to claim 1, characterized in that, One end of each of the pair of ball screws (34) extends outward through one of the supports (33) and is fitted with a timing pulley (39), and a timing belt (310) is wound between the pair of timing pulleys (39).

3. The optically transparent adhesive bonding bubble elimination device according to claim 2, characterized in that, One of the supports (33) has a servo motor (38) mounted on one side of its back, and the output end of the servo motor (38) is connected to one of the ball screws (34) for transmission.

4. The optically transparent adhesive bonding bubble elimination device according to claim 1, characterized in that, The base assembly (1) includes a workbench (11), and hydraulic rods (32) are installed on both sides of the bottom end of the two supports (33). The two hydraulic rods (32) are connected to a vertical plate (31) at the end away from the support (33). One side of the vertical plate (31) is fixedly connected to the outer wall of the workbench (11).

5. The optically transparent adhesive bonding bubble elimination device according to claim 1, characterized in that, The first elimination mechanism (2) includes two pairs of square seats (21). The pair of square seats (21) are respectively installed on the front and back of the workbench (11). A round rod (22) is installed at the top of each pair of square seats (21). A connecting seat (26) is provided at the upper end of each of the two round rods (22). A first connecting plate (27) is installed at the upper end of each of the two connecting seats (26). A first extrusion roller (29) is rotatably connected between the two first connecting plates (27).

6. The optically transparent adhesive bonding bubble elimination device according to claim 5, characterized in that, There are two first extrusion rollers (29), and the distance between the two first extrusion rollers (29) is greater than the length of the second extrusion roller (37).

7. The optically transparent adhesive bonding bubble elimination device according to claim 6, characterized in that, The round rod (22) has a square cavity (23) inside, and a square plate (24) is provided inside the square cavity (23). The outer wall of the square plate (24) is slidably engaged with the inner wall of the square cavity (23). A connecting rod (25) is installed on the top surface of the square plate (24). The upper end of the connecting rod (25) passes through the round rod (22) and is fixedly connected to the bottom end of the connecting seat (26). A spring (28) is sleeved on the outside of the connecting rod (25). The two ends of the spring (28) are fixedly connected to the top surface of the square plate (24) and the top end of the inside of the round rod (22), respectively.

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