Film covering device for liquid crystal display screen processing

Abstract

The utility model relates to the technical field of display screen processing equipment, and provides a film laminating device for processing a liquid crystal display screen, which comprises a workbench and a film laminating mechanism, the limiting mechanism comprises a fixed plate, a movable plate and a transmission mechanism, the transmission mechanism comprises a transmission frame, an adsorption column and an electromagnetic adsorption assembly, the top end of the transmission frame penetrates out of the workbench and is fixedly connected with the movable plate, and a sliding groove allowing the transmission frame to move is formed in the workbench; the adsorption column is fixedly connected to the transmission frame, and the electromagnetic adsorption assembly can adsorb the adsorption column to drive the adsorption column to move in the direction of the fixing plate when powered on. The position of the display screen is adjusted and fixed in a magnetic mode, and the display screen is not prone to being damaged.

Description

Technical Field

[0001] This utility model relates to the field of display screen processing equipment technology, and in particular to a coating device for liquid crystal display screen processing. Background Technology

[0002] In the manufacturing of LCD screens, a protective film or functional film needs to be applied to the surface of the screen to protect it from scratches. A film coating device is a device that applies a film to the surface of the screen.

[0003] CN221737085U discloses a surface coating apparatus for a liquid crystal display screen, including a coating machine for coating the surface of a liquid crystal display screen. The coating machine is equipped with a conveying component for conveying the liquid crystal display screen. Guide components for conveying the liquid crystal display screen are arranged on both sides of the feed inlet of the conveying component. The guide components are used to adjust the orientation angle of the liquid crystal display screen to be coated and to arrange it linearly.

[0004] CN117207507B discloses a coating device for display screen production and processing, including a base with four support columns fixedly connected to the upper end of the base; when the protective film roll moves to the underside of the square plate, it is blown on the display screen body before coating; when the protective film roll moves to the upper side of the square plate, the end of the protective film roll is fixed by a clamping mechanism and the friction between the fixing tube and the protective film roll is increased by an expansion mechanism, thereby stretching and flattening the protective film roll.

[0005] In the prior art, in order to fix the display screen before applying the film, the coating device usually positions and fixes the display screen to prevent it from shifting during the coating process. However, when fixing the display screen, the general positioning mechanism is difficult to stably position and fix the display screen of different sizes, and the existing display screen fixing mechanism is prone to damaging the display screen. Utility Model Content

[0006] In the prior art, in order to fix the display screen before applying the film, the coating device usually positions and fixes the display screen to prevent it from shifting during the coating process. However, when fixing the display screen, the general positioning mechanism is difficult to stably position and fix the display screen of different sizes, and the existing display screen fixing mechanism is prone to damaging the display screen. At the same time, the existing cleaning mechanism usually uses air to blow away the dust and impurities on the display screen, but the dust blown away may fall back onto the display screen and affect the coating work.

[0007] In view of this, the present invention aims to provide a coating device for processing liquid crystal displays. In the present invention, the coating device includes a worktable and a coating mechanism disposed on the worktable. The worktable is provided with a limiting mechanism for adjusting the position of the display screen.

[0008] The limiting mechanism includes a fixed plate, a movable plate, and a transmission mechanism for driving the movable plate to move. The fixed plate and the movable plate are arranged in parallel, and the movable plate can push the display screen to move to fit against the fixed plate.

[0009] The transmission mechanism is located inside the workbench. The transmission mechanism includes a transmission frame, an adsorption column, and an electromagnetic adsorption assembly. A slide rail is provided inside the workbench. The bottom end of the transmission frame is located on the slide rail and can slide on the slide rail. The top end of the transmission frame protrudes from the workbench and is fixedly connected to the movable plate. A groove is provided on the workbench for the transmission frame to move.

[0010] The adsorption column is fixedly connected to the transmission frame. When the electromagnetic adsorption component is energized, it can adsorb the adsorption column and drive the adsorption column to move towards the fixed plate.

[0011] Furthermore, a limiting plate is fixed on one end of the slide rail near the electromagnetic adsorption component, and a return spring is provided between the limiting plate and the transmission frame.

[0012] Furthermore, the coating device also includes a cleaning mechanism, which includes a shelf, a fan, a filter assembly, and an adsorption hood;

[0013] The shelf is placed on the workbench for placing the display screen, and the shelf has several through holes; the adsorption cover is placed at the bottom of the shelf; the fan and filter assembly are installed inside the workbench, and the input end of the fan is connected to the adsorption cover, and the output end is connected to the filter assembly.

[0014] An air supply chamber is provided inside the fixing plate, and the air supply chamber is connected to the filter assembly. An air outlet is provided on the side of the fixing plate facing the shelf.

[0015] Furthermore, the workbench is also equipped with a linkage mechanism, which includes a drive motor, a rotating shaft, a linkage rod, and a contact switch;

[0016] One end of the rotating shaft is connected to the drive motor, and the other end is fixedly connected to the middle of the linkage rod; one end of the linkage rod is connected to the electromagnetic adsorption component, and the other end is provided with a contact point that cooperates with the contact switch;

[0017] When the contact point comes into contact with the contact switch, the fan is de-energized and the electromagnetic adsorption component is energized; when the contact point does not come into contact with the contact switch, the fan continues to start and the electromagnetic adsorption component is not energized.

[0018] Furthermore, a limiting guide is provided on one side of the shelf, the limiting guide includes a positioning plate fixed on the workbench and a plurality of guide rollers rotatably mounted on the side of the positioning plate, the positioning plate is perpendicular to the fixing plate, and the guide rollers are located on the side of the positioning plate close to the shelf.

[0019] Furthermore, a camera assembly is provided on the workbench, which is used to capture the coating process of the display screen.

[0020] The coating device for processing liquid crystal displays disclosed in this utility model uses magnetic adsorption to drive a movable plate to move the display screen and adjust its position. At the same time, the movable plate, together with the fixed plate, clamps and fixes the display screen to ensure stability during coating. The display screen is pushed and clamped by magnetic force, and the clamping force is not too large to cause damage to the display screen.

[0021] The cleaning mechanism blows air from the side of the fixed plate to clean the surface of the display screen placed on the shelf. At the same time, negative pressure is generated at the adsorption cover to collect the air and flying dust in time, thus preventing the dust from falling back onto the display screen while cleaning it.

[0022] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0023] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0024] Figure 1 This is a structural schematic diagram of one embodiment of the present invention;

[0025] Figure 2 This is a top view schematic diagram of one embodiment of the present utility model;

[0026] Figure 3 This is a perspective view of the workbench in one embodiment of the present invention;

[0027] Figure 4 This is a schematic diagram of the structure of the adsorption cover in one embodiment of the present invention;

[0028] Figure 5 This is a schematic diagram of the linkage rod in one embodiment of the present invention.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1. Workbench; 2. Coating mechanism; 3. Fixed plate; 4. Movable plate; 5. Transmission frame; 6. Adsorption column; 7. Electromagnetic adsorption assembly; 8. Slide rail; 9. Slide groove; 10. Camera assembly; 11. Limiting plate; 12. Return spring; 13. Fan; 14. Adsorption cover; 15. Shelf; 16. Filter assembly; 17. Drive motor; 18. Rotating shaft; 19. Linkage rod; 20. Contact switch; 21. Contact point; 22. Limiting guide. Detailed Implementation

[0031] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0032] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention 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 invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0033] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of the utility model described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or device that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or devices. "Fixed" or "fixed connection" generally refers to common mechanical connection methods, such as threaded connections, welding, or bonding.

[0034] In the prior art, in order to fix the display screen before applying the film, the coating device usually positions and fixes the display screen to prevent it from shifting during the coating process. However, when fixing the display screen, the general positioning mechanism is difficult to stably position and fix the display screen of different sizes, and the existing display screen fixing mechanism is prone to damaging the display screen. At the same time, the existing cleaning mechanism usually uses air to blow away the dust and impurities on the display screen, but the dust blown away may fall back onto the display screen and affect the coating work.

[0035] This utility model provides a coating device for processing liquid crystal displays, such as... Figure 1 and Figure 2 As shown, in this embodiment, the laminating device includes a worktable 1 and a laminating mechanism 2 disposed on the worktable 1. The worktable 1 has an installation cavity inside for installing drive and transmission components, and a maintenance door is provided on the side. The laminating mechanism 2 typically includes an unwinding unit, a winding unit, laminating rollers, and a pressing mechanism, etc., for laminating the display screen on the worktable 1. The worktable 1 is provided with a limiting mechanism for adjusting the position of the display screen. The limiting mechanism is used to push the display screen to the laminating position and restrict the movement of the display screen before or during lamination.

[0036] Specifically: such as Figure 3 As shown, the limiting mechanism includes a fixed plate 3, a movable plate 4, and a transmission mechanism for driving the movable plate 4 to move. The movable plate 4 moves away from or towards the fixed plate 3; that is, it clamps the display screen when it approaches and releases the clamp when it moves away. The fixed plate 3 and the movable plate 4 are arranged parallel to each other to ensure stable clamping of both sides of the display screen. When the movable plate 4 approaches the fixed plate 3, it pushes the display screen to move until it is in contact with the fixed plate 3, thereby performing clamping work on both sides. Protective layers are provided on opposite sides of the movable plate 4 and the fixed plate 3 to protect the display screen when clamping it. The transmission mechanism is located inside the worktable 1, that is, inside the mounting cavity of the worktable 1. The transmission mechanism includes a transmission frame 5, an adsorption column 6, and an electromagnetic adsorption assembly 7. The worktable 1 is horizontal. A slide rail 8 is provided, with its direction from the movable plate 4 to the fixed plate 3. The bottom end of the transmission frame 5 is located on the slide rail 8, allowing the transmission frame 5 to slide on the slide rail 8, ensuring the stability of the transmission frame 5's back-and-forth movement. The top end of the transmission frame 5 protrudes from the worktable 1 and is fixedly connected to the bottom of the movable plate 4, so that the movable plate 4 and the transmission frame 5 can move together. A slide groove 9 is provided on the worktable 1 for the transmission frame 5 to move. An adsorption column 6 is fixedly connected to the transmission frame 5. The adsorption column 6 is configured to adsorb iron columns that can be attracted by the magnetic force generated by the electromagnetic adsorption component 7 after being energized. When the electromagnetic adsorption component 7 is energized, it generates a magnetic force that can attract the adsorption column 6, thereby driving the adsorption column 6 to move towards the fixed plate 3, and in turn driving the movable plate 4 to move towards the fixed plate 3.

[0037] It should be noted that in this embodiment, one side of any size display screen is always in contact with the fixing plate 3, the film coating mechanism 2 is always located on the side close to the fixing plate 3, and the film coating size is adjusted according to the size of the display screen.

[0038] To ensure that the movable plate 4 can stably return to a position away from the fixed plate 3 after being moved, a limit plate 11 is fixed on the slide rail 8 at one end near the electromagnetic adsorption component 7. A return spring 12 is provided between the limit plate 11 and the transmission frame 5. After the movable plate 4 moves towards the fixed plate 3, the return spring 12 is compressed. After the magnetic force disappears, the movable plate 4 is driven to return to its original position by the elastic force of the return spring 12, which facilitates the next adjustment of the display screen position.

[0039] This utility model, through the setting of a limiting mechanism, uses magnetic adsorption to drive the movable plate 4 to move the display screen and adjust the position of the display screen. At the same time, the movable plate 4, together with the fixed plate 3, clamps and fixes the display screen to ensure stability during lamination. The display screen is pushed and clamped by magnetic force, and the clamping force will not be too large to cause damage to the display screen.

[0040] To ensure the cleanliness of the display screen during lamination and remove dust and impurities from its surface, a cleaning mechanism is installed on the workbench 1 to clean the display screen surface. This cleaning mechanism includes a shelf 15, a fan 13, a filter assembly 16, and an adsorption cover 14. The shelf 15, placed on the workbench 1, is used to place the display screen and is always installed horizontally. In this embodiment, the shelf 15 is integrated with the workbench 1 to prevent it from shaking or shifting after prolonged use. Several through holes are provided on the shelf 15 to allow dust and gas to pass through. These through holes connect the upper end of the shelf 15 to the mounting cavity. A sliding groove 9 is provided on the shelf 15. The adsorption cover 14 is located at the bottom of the shelf 15, below the through holes, allowing dust to enter the adsorption cover 14 along with the gas through the through holes. Figure 4 As shown, the adsorption hood 14 has a recess that matches the slide groove 9 to ensure that the transmission rod can move normally without interfering with the adsorption hood 14; the fan 13 and the filter assembly 16 are both installed inside the workbench 1. The fan 13 is installed on one side of the adsorption hood 14, and the filter assembly 16 can filter dust and impurities to ensure that clean air is discharged. The fan 13 serves as the power source for cleaning. Its input end is connected to the adsorption hood 14 through a pipeline to ensure that the adsorption hood 14 can generate adsorption force, and its output end is connected to the filter assembly 16 to ensure that the adsorbed gas is discharged into the filter assembly 16. The filter is filtered during the process. An air supply chamber is provided in the fixed plate 3, and the air supply chamber is connected to the filter assembly 16 through a pipeline. An air outlet is provided on the side of the fixed plate 3 facing the placement plate 15. In order to ensure uniform and stable air output, in other embodiments, an air nozzle is embedded in the air outlet. This solution can blow air from the side of the fixed plate 3 to clean the surface of the display screen placed on the placement plate 15. At the same time, a negative pressure is generated at the adsorption cover 14 to collect the air and flying dust in time. While cleaning the display screen, it can prevent the dust from falling back onto the display screen.

[0041] To achieve automation, the air blowing cleaning process and the position adjustment of the display screen are linked and controlled; for example... Figure 5 As shown, a linkage mechanism is also provided inside the workbench 1. The linkage mechanism includes a drive motor 17, a rotating shaft 18, a linkage rod 19, and a contact switch 20. One end of the rotating shaft 18 is connected to the drive motor 17 and rotates under the control of the drive motor 17. The other end is fixedly connected to the middle of the linkage rod 19, so that the drive motor 17 can control the rotating shaft 18 and the linkage rod 19 to rotate in both directions. The drive motor 17 is a combination of a stepper motor and a gearbox. One end of the linkage rod 19 is fixed with a mounting cylinder, and the electromagnetic adsorption component 7 is installed inside the mounting cylinder. The other end of the linkage rod 19 is provided with a contact point 21 that cooperates with the contact switch 20. When the linkage rod 19 rotates, the contact point 21 can cooperate with the contact switch 20 at a specified position. The contact switch 20 is electrically connected to the fan 13 and the electromagnetic adsorption component 7, and signal communication can be performed between them.

[0042] In this embodiment, the control method of the contact switch 20 is as follows: when the contact 21 contacts the contact switch 20, the fan 13 is de-energized and the electromagnetic adsorption component 7 is energized; when the contact 21 does not contact the contact switch 20, the fan 13 continues to start and the electromagnetic adsorption component 7 is not energized; that is, when the display screen is detected to be placed on the shelf 15, the fan 13 is normally open and continuously performs dust removal and cleaning work, at which time the contact 21 on the linkage rod 19 is not in contact with the contact switch 20; before the film is to be applied, the linkage rod 19 is rotated so that the contact 21 contacts the contact switch 20. When the touch switch 20 contacts and abuts, the fan 13 stops, the electromagnetic adsorption component 7 is energized to generate magnetic force, and the adsorption drives the movable plate 4 to push the display screen to contact the fixed plate 3. Then, the film coating mechanism 2 performs the film coating work. After the film coating work is completed, the linkage rod 19 is rotated to make the contact 21 disengage from the electromagnetic adsorption component 7. At this time, the electromagnetic adsorption component 7 is de-energized, the adsorption force disappears, and the movable plate 4 is reset and released from the clamp on the display screen under the action of the reset spring 12. At the same time, the fan 13 restarts to perform post-film coating cleaning until the display screen is removed.

[0043] To improve the stability of the display screen moving on the shelf 15, a limiting guide 22 is provided on the shelf 15. The limiting guide 22 includes a positioning plate fixed on the worktable 1 and several guide rollers rotatably mounted on the side of the positioning plate. The guide rollers can rotate on the positioning plate and are located on the side of the positioning plate close to the shelf 15. The positioning plate is perpendicular to the fixed plate 3. When the display screen is placed on the shelf, one side of the display screen contacts the guide roller on the positioning plate. When the movable plate 4 pushes the display screen to move, the display screen moves along the guide roller, thereby improving the stability of the display screen movement.

[0044] In order to remotely monitor the lamination process in real time, a camera component 10 is installed on the workbench 1. The camera component 10 can capture the lamination process of the display screen and promptly identify and maintain any faults that occur during the lamination process.

[0045] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A coating apparatus for processing liquid crystal displays, comprising a worktable (1) and a coating mechanism (2) disposed on the worktable (1), characterized in that, The workbench (1) is equipped with a limiting mechanism for adjusting the position of the display screen; The limiting mechanism includes a fixed plate (3), a movable plate (4), and a transmission mechanism for driving the movable plate (4) to move. The fixed plate (3) and the movable plate (4) are arranged in parallel. The movable plate (4) can push the display screen to move to fit against the fixed plate (3). The transmission mechanism is located inside the workbench (1). The transmission mechanism includes a transmission frame (5), an adsorption column (6), and an electromagnetic adsorption assembly (7). A slide rail (8) is provided inside the workbench (1). The bottom end of the transmission frame (5) is located on the slide rail (8) and can slide on the slide rail (8). The top end of the transmission frame (5) extends out of the workbench (1) and is fixedly connected to the movable plate (4). A groove (9) is provided on the workbench (1) for the transmission frame (5) to move. The adsorption column (6) is fixedly connected to the transmission frame (5). When the electromagnetic adsorption component (7) is energized, it can adsorb the adsorption column (6) and drive the adsorption column (6) to move towards the fixed plate (3).

2. The coating apparatus for liquid crystal display processing according to claim 1, characterized in that, A limiting plate (11) is fixed on one end of the slide rail (8) near the electromagnetic adsorption component (7), and a return spring (12) is provided between the limiting plate (11) and the transmission frame (5).

3. The coating apparatus for liquid crystal display processing according to claim 2, characterized in that, The film covering device also includes a cleaning mechanism, which includes a shelf (15), a fan (13), a filter assembly (16), and an adsorption cover (14); The shelf (15) is placed on the workbench (1) for placing the display screen. The shelf (15) has several through holes. The adsorption cover (14) is placed at the bottom of the shelf (15). The fan (13) and the filter assembly (16) are installed inside the workbench (1). The input end of the fan (13) is connected to the adsorption cover (14), and the output end is connected to the filter assembly (16). An air supply chamber is provided in the fixing plate (3), which is connected to the filter assembly (16). An air outlet is provided on the side of the fixing plate (3) facing the shelf (15).

4. The coating apparatus for liquid crystal display processing according to claim 3, characterized in that, The workbench (1) is also equipped with a linkage mechanism, which includes a drive motor (17), a rotating shaft (18), a linkage rod (19), and a contact switch (20). One end of the rotating shaft (18) is connected to the drive motor (17), and the other end is fixedly connected to the middle of the linkage rod (19); one end of the linkage rod (19) is connected to the electromagnetic adsorption component (7), and the other end is provided with a contact (21) that cooperates with the contact switch (20); When the contact (21) comes into contact with the contact switch (20), the fan (13) is de-energized and the electromagnetic adsorption component (7) is energized; when the contact (21) does not come into contact with the contact switch (20), the fan (13) continues to start and the electromagnetic adsorption component (7) is not energized.

5. The coating apparatus for liquid crystal display processing according to claim 3, characterized in that, A limiting guide (22) is provided on one side of the shelf (15). The limiting guide (22) includes a positioning plate fixed on the workbench (1) and several guide rollers rotatably installed on the side of the positioning plate. The positioning plate is perpendicular to the fixing plate (3), and the guide rollers are located on the side of the positioning plate close to the shelf (15).

6. The coating apparatus for liquid crystal display processing according to claim 3, characterized in that, The workbench (1) is equipped with a camera assembly (10), which is used to capture the coating process of the display screen.

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