Polarizer attaching device and system

Abstract

The invention discloses a polaroid attaching device and system.The polaroid attaching device comprises a substrate conveying assembly used for conveying a substrate in the first conveying direction; the substrate positioning assembly is mounted at the movable end of the substrate conveying assembly and used for bearing and positioning the substrate; the polaroid conveying assembly is used for conveying a polaroid to a preset position above the substrate conveying assembly; when the substrate positioning assembly carries the substrate to move to the preset position, the polaroid is attached to the surface of the substrate; the compression roller assembly is arranged on the downstream of the polaroid conveying assembly in the first conveying direction, located above the substrate conveying assembly and used for rolling the polaroid so that the polaroid can be attached to the substrate. According to the invention, by arranging the substrate positioning assembly, the substrate can be accurately positioned and fixed; when the first limiting block is located at the highest position, the positioning and limiting effects are achieved when the substrate is placed; and when the first limiting block is located at the lowest position, avoiding is carried out during attaching and pressing.

Description

Technical Field

[0001] This invention relates to the field of display technology, and in particular to a polarizer attachment device and system. Background Technology

[0002] Display panels are core components of many electronic products requiring display functions, such as smartphones, laptops, and televisions. Their performance and quality directly determine the display effect of the final product. A key step in the manufacturing process of display panels is the precise attachment of polarizers to the surface of the substrate (such as liquid crystal glass), which serves as an intermediate product. A polarizer is an optical thin film whose core function is to polarize natural light, allowing only light with specific vibration directions to pass through. This, in conjunction with the liquid crystal material, achieves the brightness contrast and color control required for display, making it an essential optical component for ensuring the display panel has normal display functionality.

[0003] The precision of polarizer placement is crucial; any misalignment during polarizer placement directly damages the optical performance and visual effects of the display panel. Since the polarizer is difficult to adjust or rework after placement, misalignment can easily lead to product scrap, resulting in significant material and cost losses. In existing technologies, many polarizer placement devices lack effective substrate positioning, making it impossible to guarantee the initial placement position. Introducing traditional mechanical positioning structures is incompatible with the polarizer placement process due to their structural characteristics: because the substrate and polarizer are thin, they require rolling after placement to ensure adhesion. Traditional rigid positioning components (such as fixing blocks) directly interfere with the polarizer or the pressing rollers, hindering the placement and pressing process and affecting the final flatness and quality. Therefore, there is an urgent need to design a polarizer placement device and its corresponding system. Summary of the Invention

[0004] The purpose of this invention is to provide a polarizer attachment device and system, which solves the problem that existing polarizer attachment devices lack substrate positioning function.

[0005] To achieve this objective, the present invention adopts the following technical solution: A polarizer attachment device, comprising A substrate conveying assembly for conveying a substrate along a first conveying direction; A substrate positioning assembly is installed on the movable end of the substrate feeding assembly and is used to carry and position the substrate. A polarizer conveying assembly is used to convey a polarizer to a preset position above the substrate feeding assembly; when the substrate positioning assembly carries the substrate to the preset position, the polarizer is attached to the substrate surface. The pressure roller assembly is located downstream of the polarizer conveying assembly along the first conveying direction and above the substrate conveying assembly, for rolling the polarizer to adhere it to the substrate. The substrate positioning assembly includes a carrier and first limiting blocks located on two opposite sides of the substrate placement area on the carrier. The first limiting blocks are vertically and vertically mounted on the carrier. When the first limiting block is in its highest position, its top is higher than the surface of the substrate placement area. When the first limiting block is in its lowest position, its top is lower than the surface of the substrate placement area.

[0006] Furthermore, the carrier is provided with a receiving groove, and the first limiting block is installed in the receiving groove by an elastic element; The first limiting block has a guide portion whose height gradually increases along the first conveying direction; The first limiting block has a clearance portion whose height gradually increases along the direction away from the substrate placement area.

[0007] Furthermore, the substrate positioning assembly also includes a vacuum plate connected to a vacuum source, and the substrate placement area on the carrier is provided with adsorption holes communicating with the vacuum plate.

[0008] Furthermore, the polarizer conveying assembly includes a mounting plate, a storage roller and a take-up roller rotatably mounted on the mounting plate, and an abutment plate fixed to the mounting plate; The storage roller is used to supply release paper carrying polarizer; The winding roller is connected to the first power source and is used to wind up the release paper; The release paper is conveyed sequentially through the storage roller, the abutment plate, and the take-up roller. The abutting plate is positioned directly opposite the preset position, and the polarizer is attached to the substrate surface at the preset position and separated from the release paper. The pressure roller assembly includes a pressure cylinder and a pressure roller located at the output end of the pressure cylinder.

[0009] Furthermore, the mounting plate is provided with several transfer rollers along the conveying path of the release paper; The mounting plate is adjustablely mounted on the lifting frame.

[0010] Furthermore, the substrate feeding assembly includes a linear module or a conveyor belt mechanism.

[0011] It also includes a base and a housing; the base is used to mount the substrate feeding assembly and the polarizer feeding mechanism; the housing is placed over the base.

[0012] A polarizer attachment system, characterized in that it includes the polarizer attachment device, a flipping assembly, and a transport assembly; The number of polarizer attaching devices is two, and they are arranged sequentially along the first conveying direction, namely the first polarizer attaching device and the second polarizer attaching device. The flipping component is used to flip the substrate; The transport assembly is used to transfer the substrate from the first polarizer attaching device to the flipping assembly, and from the flipping assembly to the second polarizer attaching device.

[0013] Furthermore, the flipping assembly includes a base, a flipping frame rotatably connected to the base, a second power source for driving the flipping frame to rotate, a second limiting block slidably connected to the flipping frame, and a third power source for driving the second limiting block to slide. The second limiting block is provided in two sets and is arranged opposite to each other on both sides of the flipping frame; the second limiting block is provided with a U-shaped groove for supporting and limiting the substrate; The transport assembly includes a first vacuum suction cup and a first moving mechanism for driving the first vacuum suction cup to move.

[0014] Furthermore, it also includes a conveyor belt assembly for conveying the substrate along the first conveying direction; The feeding assembly is used to transfer the substrate from the conveyor belt assembly to the first polarizer attachment device; The unloading assembly is used to transfer the substrate from the first polarizer attaching device to the conveyor belt assembly.

[0015] Furthermore, a blocking mechanism is provided on the conveyor belt directly opposite the feeding assembly. The blocking mechanism includes a blocking mounting frame fixed on the conveyor belt assembly, a blocking power source mounted on the blocking mounting frame, and a blocking plate fixed at the output end of the blocking power source.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The polarizer attachment device provided by this invention can accurately position and fix the substrate by setting a substrate positioning component. In this invention, when the first limiting block is in the highest position, its top is higher than the surface of the substrate placement area, playing a positioning and limiting role when placing the substrate. When the first limiting block is in the lowest position, its top is lower than the surface of the substrate placement area, avoiding interference during attachment and pressing. Because the substrate is thin, if it is not avoided, the limiting block will hinder the attachment and pressing process, resulting in uneven attachment or air bubbles.

[0017] In this invention, the vacuum adsorption provided by the vacuum plate and adsorption holes works in conjunction with the first limiting block. The first limiting block provides mechanical restraint during initial placement, ensuring the correct position of the substrate. Then, vacuum adsorption is initiated, firmly fixing the substrate and preventing displacement during subsequent attachment. If only vacuum adsorption is used, the substrate may be incorrectly fixed due to positional deviations during placement. The pre-positioning of the first limiting block avoids this problem. The combination of the two improves positioning accuracy and reliability.

[0018] The guide portion on the first limiting block in this invention facilitates the smooth pressing of the first limiting block under pressure during the conveying process; the clearance portion provides clearance space during the descent, allowing the limiting block to move smoothly downwards and avoiding interference with the substrate or polarizer. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] The structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0021] Figure 1 This is a three-dimensional schematic diagram of the polarizer attachment device in this invention; Figure 2 This is a three-dimensional schematic diagram of the polarizer attachment device in this invention from another perspective; Figure 3 This is a three-dimensional schematic diagram of the substrate positioning assembly in this invention; Figure 4 This is a schematic diagram showing the connection between the carrier and the first limiting block in this invention; Figure 5 This is a three-dimensional schematic diagram of the vacuum plate in this invention; Figure 6 This is a three-dimensional schematic diagram of the polarizer transport assembly in this invention; Figure 7 This is a three-dimensional schematic diagram of the pressure roller assembly in this invention; Figure 8 This is a three-dimensional schematic diagram of the polarizer attachment system in this invention; Figure 9 This is a three-dimensional schematic diagram of the polarizer attachment system in this invention from another perspective; Figure 10 This is a three-dimensional schematic diagram of the polarizer attachment system in this invention, showing a housing. Figure 11 This is a three-dimensional schematic diagram of the transport component in this invention; Figure 12 This is a three-dimensional schematic diagram of the flipping component in this invention; Figure 13 This is a three-dimensional schematic diagram of the second limiting block in this invention; Figure 14 This is a three-dimensional schematic diagram of the blocking mechanism in this invention.

[0022] Illustration: 1. Substrate feeding assembly; 2. Substrate positioning assembly; 21. Carrier; 211. Receiving groove; 212. Adsorption hole; 22. First limiting block; 221. Guide part; 222. Clearance part; 23. Elastic element; 24. Vacuum plate; 3. Polarizing film conveyor assembly; 31. Mounting plate; 32. Storage roller; 33. Rewind roller; 34. Abutment plate; 35. Primary power source; 36. Transfer roller; 37. Lifting frame; 4. Pressure roller assembly; 41. Pressing cylinder; 42. Pressing roller; 51. Base; 52. Shell; 6. Flipping assembly; 61. Base; 62. Flipping frame; 63. Second power source; 64. Second limiting block; 641. U-shaped groove; 65. Third power source; 7. Transport assembly; 71. First vacuum suction cup; 72. First moving mechanism; 8. Conveyor belt assembly; 81. Blocking mechanism; 811. Blocking mounting bracket; 812. Blocking power source; 813. Blocking plate; 91. Feeding assembly; 911. Second vacuum suction cup; 912. Second moving mechanism; 92. Unloading assembly; 921. Third vacuum suction cup; 922. Third moving mechanism; 10. Substrate. Detailed Implementation

[0023] To make the objectives, features, and advantages of this invention more apparent and understandable, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0024] In the description of this invention, it should be understood that the terms "upper," "lower," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and 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 of the invention. It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be a component positioned centrally in the connection.

[0025] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0026] Example 1: This embodiment provides a polarizer attachment device for precisely attaching a polarizer to the surface of a substrate. Figures 1-2 As shown, the polarizer attachment device includes a substrate feeding assembly 1, a substrate positioning assembly 2, a polarizer conveying assembly 3, a pressure roller assembly 4, a base 51, and a housing 52. The base 51 is used to mount the substrate feeding assembly 1 and the polarizer conveying mechanism to provide a stable support structure. The housing 52 covers the base 51 and provides protection. It should be noted that the substrate is an intermediate product in the display manufacturing process.

[0027] The substrate feeding assembly 1 is used to feed the substrate along a first feeding direction, specifically to feed the substrate to a preset position for polarizer attachment, and then feed it to the downstream process after attachment. In a specific embodiment, the substrate feeding assembly 1 includes a linear module for driving the substrate positioning assembly 2 to reciprocate. Further, the linear module includes a power source and a linear rotation mechanism. The power source is one of an electric motor, a pneumatic motor, or a hydraulic motor, and the linear rotation mechanism is one of a lead screw drive, a synchronous belt drive, or a rack and pinion drive; or the linear module is one of an electric cylinder, a pneumatic cylinder, or a hydraulic cylinder. In other embodiments, the substrate feeding assembly 1 includes a conveyor belt mechanism for continuous belt or chain transmission.

[0028] Combination Figures 3-5As shown, the substrate positioning component 2 is installed on the movable end of the substrate feeding component 1. The substrate positioning component 2 is used to carry and position the substrate to ensure that the substrate is fixed in position during the bonding process and improve the bonding accuracy. The substrate positioning assembly 2 includes a carrier 21 and first limiting blocks 22 located on opposite sides of the substrate placement area on the carrier 21. The carrier 21 is used to support the substrate and has a substrate placement area. The first limiting blocks 22 are movably mounted on the carrier 21. When the first limiting block 22 is at its highest position, its top is higher than the surface of the substrate placement area to limit the substrate. When the first limiting block 22 is at its lowest position, its top is lower than the surface of the substrate placement area to avoid the substrate. Its working principle is that when the substrate is placed on the carrier 21, the first limiting block 22 rises to restrict the substrate position. During the bonding and pressing process, the first limiting block 22 descends to avoid interference with the substrate or polarizer, thereby ensuring flat bonding. Since the substrate is thin, if it is not avoided, the limiting block may obstruct the rolling of the pressure roller, resulting in poor bonding. In a specific embodiment, the carrier 21 is provided with a receiving groove 211, and the first limiting block 22 is installed in the receiving groove 211 by an elastic member 23, so that the first limiting block 22 is supported by the elastic member 23 in the highest position in its natural state for limiting; when subjected to downward pressure, the elastic member 23 is compressed and descends to the lowest position to avoid interference, without the need for an additional power source, and the structure is simple and reliable; furthermore, the elastic member 23 includes a spring; the elastic member 23 provides a restoring force, so that the first limiting block 22 automatically resets after the pressure is removed. The first limiting block 22 has a guide portion 221 whose height gradually increases along the first conveying direction, which facilitates the smooth pressing down of the first limiting block 22 under pressure during the conveying process. The first limiting block 22 has a clearance portion 222 whose height gradually increases along the direction away from the substrate placement area, which provides clearance space during the descent. The inclined design of the clearance portion 222 allows the limiting block to move down smoothly and avoids interference with the substrate or polarizer. The substrate positioning assembly 2 also includes a vacuum plate 24 connected to a vacuum source. The substrate placement area on the carrier 21 is provided with adsorption holes 212 communicating with the vacuum plate 24 for adsorbing and fixing the substrate. The substrate is firmly fixed to the surface of the carrier 21 by vacuum adsorption force to prevent displacement during the bonding process and ensure accurate bonding position. During operation, the substrate is placed on the carrier 21. At this time, the first limiting block 22 is at its highest position, restricting the position of the substrate from both sides to ensure initial alignment. Then, vacuum adsorption is started, and the substrate is firmly adsorbed and fixed through the adsorption holes 212. Next, polarizer bonding and rolling are performed. During the rolling process, the pressure of the pressure roller causes the first limiting block 22 to be pressed down to its lowest position to avoid interference with bonding. After the rolling is completed, vacuum adsorption is turned off, the fixation is released, and the next process is carried out.If vacuum adsorption is relied upon without the first limiting block 22, the substrate may be placed crookedly due to inaccurate positioning, and vacuum adsorption will fix it in the wrong position. However, the first limiting block 22 first positions the substrate, and then vacuum adsorption fixes it. The two work together to ensure accurate and stable positioning. It should be noted that the receiving groove 211 is not connected to the vacuum plate 24 or the adsorption hole 212 to prevent vacuum leakage and ensure stable adsorption effect. Moreover, the vacuum source is a common structure that provides vacuum, such as a vacuum pump or vacuum generator, to provide a stable negative pressure environment.

[0029] Combination Figure 6 As shown, the polarizer conveying assembly 3 is used to convey the polarizer to a preset position above the substrate feeding assembly 1; wherein when the substrate positioning assembly 2 carries the substrate to the preset position, the polarizer adheres to the substrate surface, realizing automatic supply of the polarizer and ensuring accurate attachment starting position. In a specific embodiment, the polarizer conveying assembly 3 includes a mounting plate 31, a storage roller 32 and a take-up roller 33 rotatably mounted on the mounting plate 31, and an abutment plate 34 fixed to the mounting plate 31. The storage roller 32 is used to supply release paper carrying the polarizer; the take-up roller 33 is connected to a first power source 35 and is used to take up the release paper; the conveying path of the release paper passes sequentially through the storage roller 32, the abutment plate 34, and the take-up roller 33; the abutment plate 34 is positioned directly opposite the preset position, and the polarizer adheres to the substrate surface at the preset position and separates from the release paper. During operation, release paper carrying a polarizing film is wound on the storage roller 32. The take-up roller 33 rotates under the drive of the first power source 35, pulling the release paper out of the storage roller 32. As it passes the abutment plate 34, the polarizing film is positioned at a preset location and adheres to the substrate surface, where it is peeled off from the release paper. The release paper then continues to be wound up by the take-up roller 33. Along the conveying path of the release paper, the mounting plate 31 is provided with several transfer rollers 36 to guide and support the release paper, ensuring smooth conveying and reducing friction and wrinkles. Furthermore, the transfer rollers 36 are rotatably mounted on the mounting plate 31. In a specific embodiment, the mounting plate 31 is adjustablely mounted on the lifting frame 37 to adjust the height of the abutment plate 34.

[0030] The pressure roller assembly 4, combined with Figure 7As shown, the pressure roller assembly 4 is located downstream of the polarizer conveying assembly 3 and above the substrate conveying assembly 1 along the first conveying direction. It is used to roll the polarizer to adhere it to the substrate, eliminating air bubbles between the polarizer and the substrate through rolling, ensuring a tight, gapless fit. In a specific embodiment, the pressure roller assembly 4 includes a pressure cylinder 41 and a pressure roller 42 located at the output end of the pressure cylinder 41. The pressure cylinder 41 allows for precise control of the downward pressure and stroke of the pressure roller 42, adapting to substrates and polarizers of different thicknesses and ensuring a uniform and stable pressing effect. Furthermore, the pressure cylinder 41 is mounted on the mounting plate 31.

[0031] The polarizer attachment device provided in this embodiment can accurately position and fix the substrate by setting the substrate positioning component 2. In this embodiment, when the first limiting block 22 is in the highest position, its top is higher than the surface of the substrate placement area, playing a positioning and limiting role when placing the substrate. When the first limiting block 22 is in the lowest position, its top is lower than the surface of the substrate placement area, avoiding interference during the attachment and pressing process. Since the substrate is thin, if it is not avoided, the limiting block will hinder the attachment and pressing process, resulting in uneven attachment or air bubbles.

[0032] In this embodiment, the vacuum adsorption provided by the vacuum plate 24 and the adsorption hole 212 works in conjunction with the first limiting block 22. The first limiting block 22 provides mechanical limitation during initial placement to ensure the correct position of the substrate. Then, the vacuum adsorption is activated to firmly fix the substrate and prevent displacement during subsequent attachment. If only vacuum adsorption is used, the substrate may be incorrectly fixed due to positional deviation during placement. The pre-positioning of the first limiting block 22 avoids this problem. The combination of the two improves positioning accuracy and reliability.

[0033] In this embodiment, the guide portion 221 on the first limiting block 22 facilitates the smooth pressing of the first limiting block 22 under pressure during the conveying process; the clearance portion 222 provides clearance space during the descent process, allowing the limiting block to move smoothly downward and avoiding interference with the substrate or polarizer.

[0034] Example 2: This embodiment provides a polarizer attachment system for sequentially attaching polarizers to both sides of a substrate, achieving double-sided attachment. Combined with... Figures 8-10As shown, the polarizer attachment system includes the polarizer attachment device described in Embodiment 1, as well as a flipping assembly 6, a conveying assembly 7, a conveyor belt assembly 8, a loading assembly 91, and a unloading assembly 92. The flipping assembly 6, conveying assembly 7, loading assembly 91, and unloading assembly 92 are all mounted on the base 51. There are two polarizer attachment devices, arranged sequentially along the first conveying direction: a first polarizer attachment device and a second polarizer attachment device. The first polarizer attachment device is used to attach the polarizer to one side of the substrate, and the second polarizer attachment device is used to attach the polarizer to the other side of the substrate, thus achieving double-sided attachment. The flipping assembly 6 is used to flip the substrate so that after one side is attached, the substrate can be flipped so that the other side is facing upwards for attachment. The conveying assembly 7 is used to transfer the substrate from the first polarizer attachment device to the flipping assembly 6, and from the flipping assembly 6 to the second polarizer attachment device, realizing the transfer of the substrate between the polarizer attachment device and the flipping assembly 6. Figure 11 As shown, the conveying assembly 7 includes a first vacuum suction cup 71 and a first moving mechanism 72 that drives the first vacuum suction cup 71 to move. The vacuum suction cup has a large contact area and uniform force when gripping the substrate, avoiding damage to the substrate surface, and provides stable and reliable gripping. In a specific embodiment, the substrate positioning assembly 2 and the flipping assembly 6 on the first polarizer attachment device, and the substrate positioning assembly 2 on the second polarizer attachment device are on the same straight line. The first moving mechanism 72 includes a horizontal driving mechanism and a vertical driving mechanism, used to drive the vacuum suction cup to move horizontally and vertically respectively, thereby achieving precise positioning and transfer on the same straight line and simplifying the mechanism's movement path; wherein, the horizontal movement direction is the same as the first conveying direction. When the substrate positioning assembly 2 and the flipping assembly 6 on the first polarizer attachment device, and the substrate positioning assembly 2 on the second polarizer attachment device are not on the same straight line, the first moving mechanism 72 includes a first horizontal driving mechanism, a second horizontal driving mechanism, and a vertical driving mechanism, used to drive the vacuum suction cup to move along a first horizontal direction, a second horizontal direction, and a vertical direction respectively, wherein the first horizontal direction and the second horizontal direction are perpendicular. It should be noted that the (first / second) horizontal drive mechanism and the vertical drive mechanism are both common linear motion mechanisms, such as cylinders and electric slides, which are well known to those skilled in the art and will not be described in detail here. In other embodiments, the first moving mechanism 72 includes a robotic arm with multiple degrees of freedom, which can flexibly realize complex motion trajectories and adapt to different layout requirements.

[0035] Combination Figures 12-13As shown, the flipping assembly 6 includes a base 61, a flipping frame 62 rotatably connected to the base 61, a second power source 63 for driving the flipping frame 62 to rotate, a second limiting block 64 slidably connected to the flipping frame 62, and a third power source 65 for driving the second limiting block 64 to slide. During operation, the second power source 63 drives the flipping frame 62 to rotate, thereby flipping the substrate. The third power source 65 drives the second limiting block 64 to slide, limiting or releasing the substrate to ensure it does not fall off during the flipping process. In a specific embodiment, two sets of the second limiting blocks 64 are provided and are arranged opposite to each other on both sides of the flipping frame 62, limiting the substrate from both sides to ensure stability during the flipping process. The second limiting block 64 is provided with a U-shaped groove 641 for supporting and limiting the substrate. The U-shaped groove 641 can support the edge of the substrate; specifically, the sidewall and bottom wall of the U-shaped groove 641 support and laterally limit the edge of the substrate without applying clamping force, avoiding damage to the substrate due to excessive clamping force. During operation, the transport component 7 transports the substrate onto the flipping frame 62 and places it between the U-shaped grooves 641 of the two second limiting blocks 64. Then, the third power source 65 drives the two second limiting blocks 64 to move closer to each other, so that the substrate is limited within the U-shaped grooves 641. The transport component 7 releases the substrate and moves away. Next, the second power source 63 drives the flipping frame 62 to rotate 180 degrees to flip the substrate. After flipping, the transport component 7 grabs the substrate again. The third power source 65 drives the two second limiting blocks 64 to move away from each other, releasing the substrate. Finally, the transport component 7 transports the substrate onto the second polarizer attaching device.

[0036] The conveyor belt assembly 8 is used to convey substrates along a first conveying direction, receiving substrates from the previous process and conveying them to the loading assembly 91; simultaneously, after bonding is completed, it receives substrates transferred by the unloading assembly 92 and conveys them to the next process, realizing continuous production. In a specific embodiment, a blocking mechanism 81 is provided on the conveyor belt directly opposite the loading assembly 91 to block the substrates at the loading point. Figure 14 As shown, the blocking mechanism 81 includes a blocking mounting bracket 811 fixed on the conveyor belt assembly 8, a blocking power source 812 mounted on the blocking mounting bracket 811, and a blocking plate 813 fixed to the output end of the blocking power source 812. During operation, the blocking power source 812 drives the blocking plate 813 to move above the conveyor belt to intercept and position the substrate, facilitating pickup by the feeding assembly 91. Furthermore, the blocking plate 813 is made of rubber or silicone to provide cushioning upon contact and prevent damage to the substrate surface.

[0037] The loading component 91 is used to transfer the substrate from the conveyor belt assembly 8 to the first polarizer attaching device, realizing automatic loading of the substrate from the conveyor belt to the attaching device and improving the degree of automation. The loading component 91 includes a second vacuum suction cup 911 and a second moving mechanism 912 that drives the second vacuum suction cup 911 to move. The vacuum suction cup grips the substrate, and the moving mechanism drives it to be precisely placed on the substrate positioning component 2 of the first polarizer attaching device. In a specific embodiment, the second moving mechanism 912 includes a robotic arm that can realize multi-axis movement and flexibly transfer the substrate from the conveyor belt assembly 8 to the first polarizer attaching device. In other embodiments, the second moving mechanism 912 includes a linear motion mechanism, such as an electric slide or a cylinder drive mechanism, for realizing the loading movement of the substrate. The unloading component 92 is used to transfer the substrate from the first polarizer attaching device to the conveyor belt assembly 8. After one side of the substrate is attached, it is transported from the first polarizer attaching device to the conveyor belt for transport to the next process. The unloading assembly 92 includes a third vacuum suction cup 921 and a third moving mechanism 922 for driving the third vacuum suction cup 921. In a specific embodiment, the third moving mechanism 922 includes a robotic arm capable of multi-axis motion, flexibly transferring the substrate from the first polarizer attachment device to the conveyor belt assembly 8. In other embodiments, the third moving mechanism 922 includes a linear motion mechanism, such as an electric slide or a cylinder-driven mechanism, for realizing the unloading motion of the substrate. It should be noted that the structure of the robotic arm in this embodiment is conventional technology in the art, and its working principle for realizing the loading, unloading, and / or handling of substrates is well known to those skilled in the art and will not be described in detail here.

[0038] The polarizer attachment system provided in this embodiment, by incorporating a flipping component 6, automates the double-sided attachment process of the substrate, thereby improving production efficiency. The U-shaped groove 641 in this embodiment provides support and lateral restraint for the substrate edge through its sidewalls and bottom wall, eliminating the need for clamping force and avoiding potential substrate damage caused by mechanical clamping, making it suitable for thinner substrates.

[0039] The above-described embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention 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 of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A polarizer attachment device, characterized in that: include A substrate conveying assembly (1) is used to convey a substrate along a first conveying direction; The substrate positioning assembly (2) is installed on the movable end of the substrate feeding assembly (1) and is used to carry and position the substrate. The polarizer conveying assembly (3) is used to convey the polarizer to a preset position above the substrate conveying assembly (1); when the substrate positioning assembly (2) carries the substrate to the preset position, the polarizer is attached to the substrate surface. The pressure roller assembly (4) is located downstream of the polarizer conveying assembly (3) along the first conveying direction and above the substrate conveying assembly (1) for rolling the polarizer to adhere it to the substrate. The substrate positioning component (2) includes a carrier (21) and first limiting blocks (22) located on two opposite sides of the substrate placement area on the carrier (21). The first limiting blocks (22) are movably mounted on the carrier (21). When the first limiting block (22) is in the highest position, its top is higher than the surface of the substrate placement area. When the first limiting block (22) is in the lowest position, its top is lower than the surface of the substrate placement area.

2. The polarizer attachment device according to claim 1, characterized in that: The carrier (21) is provided with a receiving groove (211), and the first limiting block (22) is installed in the receiving groove (211) by means of an elastic element (23); The first limiting block (22) has a guide portion (221) whose height gradually increases along the first conveying direction; The first limiting block (22) has a clearance portion (222) whose height gradually increases along the direction away from the substrate placement area.

3. The polarizer attachment device according to claim 1, characterized in that: The substrate positioning assembly (2) also includes a vacuum plate (24) connected to a vacuum source, and the substrate placement area on the carrier (21) is provided with an adsorption hole (212) communicating with the vacuum plate (24).

4. The polarizer attachment device according to claim 1, characterized in that: The polarizer conveying assembly (3) includes a mounting plate (31), a storage roller (32) and a take-up roller (33) rotatably mounted on the mounting plate (31), and an abutment plate (34) fixed to the mounting plate (31). The storage roller (32) is used to supply release paper carrying polarizer; The winding roller (33) is connected to the first power source (35) and is used to wind up the release paper; The release paper is conveyed through the storage roller (32), the abutment plate (34) and the winding roller (33) in sequence. The abutment plate (34) is positioned directly opposite the preset position, and the polarizer is attached to the substrate surface at the preset position and separated from the release paper; The pressure roller assembly (4) includes a pressure cylinder (41) and a pressure roller (42) located at the output end of the pressure cylinder (41).

5. The polarizer attachment device according to claim 4, characterized in that: Along the conveying path of the release paper, the mounting plate (31) is provided with several intermediate rollers (36). The mounting plate (31) is adjustablely mounted on the lifting frame (37).

6. The polarizer attachment device according to claim 1, characterized in that: The substrate feeding assembly (1) includes a linear module or a conveyor belt mechanism. It also includes a base (51) and a housing (52); the base (51) is used to mount the substrate feeding assembly (1) and the polarizer feeding mechanism; the housing (52) covers the base (51).

7. A polarizer attachment system, characterized in that: The device includes the polarizer attachment apparatus according to any one of claims 1-6, as well as the flipping assembly (6) and the conveying assembly (7). The number of polarizer attaching devices is two, and they are arranged sequentially along the first conveying direction, namely the first polarizer attaching device and the second polarizer attaching device. The flipping component (6) is used to flip the substrate; The transport assembly (7) is used to transfer the substrate from the first polarizer attaching device to the flipping assembly (6), and from the flipping assembly (6) to the second polarizer attaching device.

8. The polarizer attachment system according to claim 7, characterized in that: The flipping assembly (6) includes a base (61), a flipping frame (62) rotatably connected to the base (61), a second power source (63) for driving the flipping frame (62) to rotate, a second limiting block (64) slidably connected to the flipping frame (62), and a third power source (65) for driving the second limiting block (64) to slide. The second limiting block (64) is provided in two sets and is arranged opposite to each other on both sides of the flipping frame (62); the second limiting block (64) is provided with a U-shaped groove (641) for supporting and limiting the substrate. The transport assembly (7) includes a first vacuum suction cup (71) and a first moving mechanism (72) that drives the first vacuum suction cup (71) to move.

9. The polarizer attachment system according to claim 7, characterized in that: It also includes a conveyor belt assembly (8) for conveying the substrate along the first conveying direction; The feeding assembly (91) is used to transfer the substrate from the conveyor belt assembly (8) to the first polarizer attachment device; The unloading assembly (92) is used to transfer the substrate from the first polarizer attaching device to the conveyor belt assembly (8).

10. The polarizer attachment system according to claim 9, characterized in that: A blocking mechanism (81) is provided on the conveyor belt directly opposite the feeding assembly (91). The blocking mechanism (81) includes a blocking mounting frame (811) fixed on the conveyor belt assembly (8), a blocking power source (812) installed on the blocking mounting frame (811), and a blocking plate (813) fixed at the output end of the blocking power source (812).

Images