An automatic cleaning device for silver paste used in display screen production

Abstract

This invention discloses an automatic silver paste cleaning device for display screen production, comprising: a work plate for mounting two active cleaning components; a servo stage for transporting substrates; and two sets of active cleaning components, each located on the outer wall of the work plate. Each active cleaning component includes a cleaning cylinder, a semi-sealed shell, a spray shell, an adjusting motor, a cleaning sleeve, a cleaning roller, and a silver paste cleaning component. In this invention, the active cleaning device enables rapid cleaning of substandard silver paste on the substrate, allowing for a second silver paste coating process, thus improving equipment efficiency. The silver paste cleaning component ensures stable unblocking of the coating conduit, avoiding manual intervention and reducing equipment efficiency. It also ensures rapid cleaning of substandard silver paste on the substrate, and the moistened cleaning sleeve prevents scratching the substrate, improving the cleanliness and conductivity of the coated electrodes.

Description

Technical Field

[0001] This invention belongs to the field of display screen manufacturing technology, specifically an automatic cleaning device for silver paste used in display screen manufacturing. Background Technology

[0002] A monitor is also commonly referred to as a display. A monitor is a computer I / O device, that is, an input / output device. It is a display tool that displays certain electronic documents on a screen through a specific transmission device and then reflects them to the human eye. According to the different manufacturing materials, it can be divided into: cathode ray tube monitor (CRT), plasma display panel (PDP), liquid crystal display (LCD), etc.

[0003] In the manufacturing process of LCD modules, In-Cell (touch structure inside the LCD cell) Thin Film Transistor Liquid Crystal Displays (TFT-LCDs) often experience static electricity buildup on the polarizer surface, which can cause abnormal colors in parts of the LCD panel. To remove this static electricity, silver paste needs to be applied to the interface between the TFT substrate and the color filter substrate. In existing technology, silver paste is usually applied manually at specific locations on the interface between the TFT substrate and the color filter substrate. The shape of the applied silver paste is generally a circle with a diameter of 1.5 mm.

[0004] Existing silver paste coating equipment suffers from several drawbacks during actual silver paste application. Limited material supply from the production line leads to blockages at the output of the coating equipment, resulting in a low yield rate. This is particularly problematic when storage conditions are unsuitable, causing irregular sedimentation and inconsistent viscosity. Even under pressure, the silver paste is difficult to coat evenly. Furthermore, substandard coating requires manual cleaning with a Class 100 cloth soaked in alcohol, necessitating the shutdown of the equipment. This reduces production efficiency and necessitates frequent unclogging of the coating conduits. Manual cleaning also increases the risk of wear on the coating electrodes, further degrading coating quality. Summary of the Invention

[0005] The purpose of this invention is to provide an automatic silver paste cleaning device for display screen production. This active cleaning device can quickly clean substandard silver paste from the substrate, allowing for a second silver paste coating process. In subsequent practical applications, this cleaning method has been found to reduce equipment downtime, improve equipment efficiency, and avoid workers repeatedly shutting down the silver paste coating equipment for manual cleaning of the substrate. The silver paste cleaning component can stably unclog the coating conduits, preventing excessive standby time that could cause the silver paste to dry and clog inside the conduits, thus avoiding manual intervention and reduced equipment efficiency. Combined with a cleaning sleeve, spray shell, and adjusting motor, the cleaning sleeve quickly cleans substandard silver paste from the substrate. Furthermore, the moistened cleaning sleeve does not scratch the substrate during the cleaning process, improving the cleanliness and conductivity of the coated electrodes.

[0006] The technical solution adopted in this invention is as follows: An automatic cleaning device for silver paste used in display screen production, comprising:

[0007] Two work panels are provided for installing the active cleaning components.

[0008] Servo stage, used for moving substrates;

[0009] An active cleaning assembly is provided, comprising two sets of active cleaning assemblies, each set being located on the outer wall of the work plate. Each active cleaning assembly includes a cleaning cylinder, a semi-sealed shell, a spray shell, an adjusting motor, a cleaning sleeve, a cleaning roller, and a silver-coated cleaning assembly. Two sets of the silver-coated cleaning assembly are provided, each set located on the outer wall of the work plate. The cleaning cylinder is fixedly located at the top of the outer wall of the work plate. The semi-sealed shell is fixedly located at the bottom of the cleaning cylinder. The spray shell is fixedly located on the outer wall of the semi-sealed shell. The adjusting motor is fixedly located at the center of the outer wall of the semi-sealed shell. The cleaning roller is fixedly located at the output end of the adjusting motor. The cleaning sleeve is slidably fitted onto the outer wall of the cleaning roller.

[0010] The silver paste cleaning assembly includes a cleaning shell, a drive plate, a drive groove, a drive rod, a limiting rod, an arc-shaped plate, and a cleaning conduit. There are eight drive plates in total, and all eight drive plates are rotatably embedded in the inner wall of the cleaning shell through the limiting rod. The drive rod is fixedly set at the bottom of the outer wall of the drive plate. The drive groove is opened on the outer wall of the arc-shaped plate. The arc-shaped plate is slidably sleeved on the bottom end of the drive rod through the drive groove. The cleaning conduit is fixedly set at the center of the bottom of the inner wall of the cleaning shell.

[0011] Furthermore, the top of the outer wall of each workboard is fixed to an external position adjustment device by a bracket, a mounting bracket is slidably embedded in the center of the inner wall of each workboard, a foam board is embedded in the top of the outer wall of each workboard, and a storage box is embedded in the top of the outer wall of each workboard.

[0012] Furthermore, the inner wall of the mounting bracket is threaded with a silver glue tube body, and the bottom end of the silver glue tube body is threaded with a coating conduit. The coating conduit and the cleaning conduit are matched with each other, and the cleaning conduit is connected to an external alcohol supply device through a hose.

[0013] Furthermore, the piston top of the inner wall of the silver tube body is fixedly mounted on the external extrusion cylinder, and the mounting bracket is fixedly mounted on the external servo control device.

[0014] Furthermore, adjustment grooves are provided at the top corners of the outer wall of the servo station, and suction cups are slidably embedded in the inner wall of the adjustment grooves. The input end of the suction cups is connected to an external negative pressure device via a flexible hose.

[0015] Furthermore, the top of the outer wall of the servo stage is provided with a substrate, and the bottom of the outer wall of the substrate is attached to the output end of the suction cup.

[0016] Furthermore, coating electrodes are vapor-deposited on both sides of the outer corner of the substrate, and alignment marks are vapor-deposited on both sides of the outer corner of the substrate.

[0017] Furthermore, the coating conduit is positioned directly above the coating electrode.

[0018] Furthermore, a drive gear is fixedly installed on the bottom of the outer wall of the drive plate, and a cleaning motor is installed on the bottom of the outer wall of both working plates. A driven gear is fixedly installed at the output end of the cleaning motor, and the drive gear and the driven gear are meshed and driven together.

[0019] Furthermore, an angle motor is installed on the top of the outer wall of each of the work plates, and the output end of the angle motor extends through to the bottom of the outer wall of the work plate. A mounting rod is fixedly installed on the output end of the angle motor, and one end of the mounting rod is fixedly installed on the outer wall of the cleaning shell.

[0020] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0021] (1) In this invention, the active cleaning device can quickly clean the unqualified silver paste on the substrate and then perform the silver paste coating process again. In subsequent practical operation, it was found that this cleaning method can reduce the downtime of the equipment, improve the working efficiency of the equipment, and avoid workers from repeatedly shutting down the silver paste coating equipment and manually cleaning the substrate.

[0022] (2) In this invention, the silver paste cleaning component can achieve stable unblocking of the coating conduit, avoid long standby time, which would cause the silver paste to dry and block inside the coating conduit, avoid manual intervention, and reduce the working efficiency of the equipment.

[0023] (3) In this invention, the cleaning sleeve, spray shell and adjustment motor are combined to make the unqualified silver paste on the substrate quickly cleaned by the cleaning sleeve. During the cleaning process, the wet cleaning sleeve will not scratch the substrate, thus improving the cleanliness and conductivity of the coated electrode. Attached Figure Description

[0024] Figure 1 This is a perspective view of the invention from a first-person perspective;

[0025] Figure 2 This is the front view of the present invention;

[0026] Figure 3 This is a perspective view of the invention from a second viewpoint;

[0027] Figure 4 This is a side view of the present invention;

[0028] Figure 5 This is a partial cross-sectional view of the present invention;

[0029] Figure 6 This is a top view of the servo station of the present invention;

[0030] Figure 7 This is an enlarged schematic diagram of invention A;

[0031] Figure 8 This is a perspective view of the cleaning shell of the present invention;

[0032] Figure 9 This is a perspective view of the arc-shaped plate of the present invention.

[0033] The diagram shows the following components: 1. Working plate; 2. Servo stage; 3. Base plate; 4. Cleaning cylinder; 5. Mounting bracket; 6. Silver glue tube body; 7. Coating guide tube; 8. Semi-sealed shell; 9. Adjustment motor; 10. Cleaning sleeve; 11. Cleaning motor; 12. Drive gear; 13. Driven gear; 14. Cleaning shell; 15. Cleaning roller; 16. Drive plate; 17. Drive groove; 18. Drive rod; 19. Limiting rod; 20. Arc plate; 21. Cleaning guide tube; 22. Mounting rod; 101. Storage box; 102. Foam board; 103. Angle motor; 201. Adjustment groove; 202. Suction cup; 301. Coating electrode; 302. Alignment mark; 801. Spray shell. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0035] Example 1

[0036] Reference Figure 1 - Figure 5An automatic silver paste cleaning device for display screen production includes: a work plate 1 for mounting two active cleaning components; a servo stage 2 for transporting substrates 3; and two sets of active cleaning components, each set located on the outer wall of the work plate 1. Each active cleaning component includes a cleaning cylinder 4, a semi-sealed shell 8, a spray shell 801, an adjusting motor 9, a cleaning sleeve 10, a cleaning roller 15, and silver paste cleaning components. The cleaning cylinder 4 is fixedly mounted at the top of the outer wall of the work plate 1 and is used to clean the semi-sealed shell 8, which is fixedly mounted at the bottom of the cleaning cylinder 4. The spray shell 801 is fixedly mounted on the bottom of the cleaning cylinder 4. The cleaning sleeve 10 is positioned on the outer wall of the semi-sealed housing 8. Through the spray nozzle 801, cleaning alcohol can be injected into one side of the cleaning sleeve 10, ensuring that the alcohol-containing end of the cleaning sleeve 10 contacts the substandard silver paste coating first during cleaning, preventing scratching of the substrate 3. The adjusting motor 9 is fixedly positioned at the center of the outer wall of the semi-sealed housing 8, and the cleaning roller 15 is fixedly positioned at the output end of the adjusting motor 9. The adjusting motor 9 provides stable drive for the cleaning roller 15, ensuring gradual replacement of the outer wall of the cleaning sleeve 10. The outer wall of the cleaning sleeve 10 has uneven convexity, matching the coating motor of the substrate, facilitating cleaning and wiping of the silver paste. The cleaning sleeve 10 is slidably fitted onto the outer wall of the cleaning roller 15, forming the silver paste cleaning assembly. The system includes a cleaning housing 14, drive plates 16, drive grooves 17, drive rods 18, limiting rods 19, an arc-shaped plate 20, and a cleaning conduit 21. Eight drive plates 16 are provided, each rotatably embedded in the inner wall of the cleaning housing 14 via the limiting rods 19. The drive rods 18 are fixedly located at the bottom of the outer wall of the drive plates 16, enabling stable rotational drive of the drive plates 16. The eight drive plates 16 form a ring, with the inner wall of the ring matching the coating conduit 7, scraping the outer wall of the conduit to prevent dried silver paste from adhering. The drive grooves 17 are located on the outer wall of the arc-shaped plate 20. The cleaning conduit 21 is fixedly installed at the bottom center of the inner wall of the cleaning shell 14, and is slidably sleeved on the bottom of the drive rod 18 via the drive groove 17. The top of the outer wall of each working plate 1 is fixedly installed on the external position adjustment device via a bracket. The center of the inner wall of each working plate 1 is slidably embedded with a mounting bracket 5. The top of the outer wall of each working plate 1 is embedded with a foam board 102. The top of the outer wall of each working plate 1 is embedded with a storage box 101. The storage box 101 is used for the discharge of waste material from the silver paste body after long-term shutdown. The inner wall of the mounting bracket 5 is threadedly connected to the silver paste tube body 6, and the bottom end of the silver paste tube body 6 is threadedly connected to a coating conduit 7. The coating conduit 7 matches the cleaning conduit 21, and the cleaning conduit 21 is connected to an external alcohol supply device via a hose.The piston top of the inner wall of the silver paste tube body 6 is fixedly mounted on the external extrusion cylinder. This fixed mounting allows for stable extrusion of the silver paste tube body 6, ensuring stable silver paste coating. The mounting bracket 5 is fixedly mounted on the external servo control device. Adjustment grooves 201 are provided at the top corners of the outer wall of the servo table 2. These grooves allow for stable adjustment of the suction cups 202, facilitating line cutting by the servo table 2 to accommodate displays of different sizes. Suction cups are slidably embedded in the inner wall of each adjustment groove 201. 202. The input end of the suction cup 202 is connected to an external negative pressure device via a flexible hose. A substrate 3 is located on the top of the outer wall of the servo stage 2, and the bottom of the outer wall of the substrate 3 is attached to the output end of the suction cup 202. Coating electrodes 301 are vapor-deposited on both sides of the outer corners of the substrate 3. The coating electrodes 301 ensure stable silver paste conductivity. Alignment marks 302 are vapor-deposited on both sides of the corners of the substrate 3. The alignment marks 302 facilitate camera calibration of the display screen, ensuring the accuracy of silver paste application. The coating conduit 7 is positioned directly above the coating electrodes 301.

[0037] Reference Figure 1 - Figure 5 A drive gear 12 is fixedly installed on the bottom of the outer wall of the drive plate 16. A cleaning motor 11 is installed on the bottom of the outer wall of each of the two working plates 1. The cleaning motor 11 can achieve stable drive of the drive gear 12. A driven gear 13 is fixedly installed at the output end of the cleaning motor 11. The drive gear 12 and the driven gear 13 are meshed and transmitted to each other. An angle motor 103 is installed on the top of the outer wall of each working plate 1. The output end of the angle motor 103 extends to the bottom of the outer wall of the working plate 1. A mounting rod 22 is fixedly installed at the output end of the angle motor 103. One end of the mounting rod 22 is fixedly installed on the outer wall of the cleaning shell 14.

[0038] The following describes in detail the usage method of an automatic silver paste cleaning device for display screen production provided by an embodiment of the present invention. The usage method includes the following steps: First, the substrate 3 is transported to the top of the outer wall of the servo stage 2 using the transport and transfer equipment of the display screen production equipment. Then, the suction cup 202 is activated, causing the substrate 3 to adhere to the top of the outer wall of the servo stage 2. Next, the servo stage 2 is finely adjusted using the calibration camera and alignment mark 302 to ensure that the coating electrode 301 is positioned directly below the coating guide tube 7. At this time, the mounting bracket 5 is driven to descend using an external servo device, causing the guide tube to descend to the position of the coating motor. Directly above, an external cylinder drives the piston of the silver paste tube body 6, causing the silver paste to be delivered to the input end of the coating conduit 7, covering the top of the outer wall of the coating electrode 301, thus completing the connection. Subsequently, the mounting bracket 5 rises, causing the coating conduit 7 to leave the coating position. When the upstream AOI equipment malfunctions, preventing the substrate from undergoing the silver paste process, the silver paste will solidify due to prolonged contact with air, causing blockage of the coating conduit 7. At this time, the mounting bracket 5 is driven down to the cleaning position, and the angle motor 103 is activated first, driving the mounting rod 22 to move the cleaning shell 14 directly below the coating conduit 7. Then, the mounting bracket 5 continues to descend, positioning the coating conduit 7 directly above the cleaning conduit 21. The external alcohol supply device is activated to lubricate the coating conduit 7, ensuring the external silver paste is lubricated. The cleaning motor 11 is then activated, driving the drive gear 12 to rotate. This causes the drive plate 16 to rotate, moving the drive rod 18, which in turn moves the arc plate 20, clamping and cleaning the coating conduit 7. For routine cleaning, the foam board 102 can be used. When the coating conduit 7 is completely blocked, the pressure of the external cylinder is increased, and the external... The servo device drives the mounting bracket 5 to a position directly above the storage box 101, where fertilizer is collected. When the silver paste on the coating electrode 301 does not meet the requirements, the external servo device drives the working plate 1 to move downwards. The cleaning cylinder 4 adjusts the pressure of the cleaning sleeve 10 against the substrate 3. First, the external alcohol supply device wets one end of the cleaning sleeve 10 through the spray shell 801. The wetted end of the cleaning sleeve 10 first contacts the silver paste, wetting it. Then, the drying cleaning sleeve 10 cleans the coating electrode 301, and the silver paste coating process is repeated.

[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An automatic cleaning device for silver paste used in display screen production, characterized in that, include: Work plate (1), used for installing active cleaning components, two of which are provided; Servo stage (2) for handling substrate (3) and tangent; An active cleaning assembly is provided in two sets, which are respectively located on the outer wall of the working plate (1). The active cleaning assembly includes a cleaning cylinder (4), a semi-sealed shell (8), a spray shell (801), an adjusting motor (9), a cleaning sleeve (10), a cleaning roller (15), and a silver paste cleaning assembly. The silver paste cleaning assembly is provided in two sets, and each set of the silver paste cleaning assembly is located on the outer wall of the working plate (1). The cleaning cylinder (4) is fixedly located at the top of the outer wall of the working plate (1). The semi-sealed shell (8) is fixedly located at the bottom of the cleaning cylinder (4). The spray shell (801) is fixedly located on the outer wall of the semi-sealed shell (8). The adjusting motor (9) is fixedly located at the center of the outer wall of the semi-sealed shell (8). The cleaning roller (15) is fixedly located at the output end of the adjusting motor (9). The cleaning sleeve (10) is slidably sleeved on the outer wall of the cleaning roller (15). The silver paste cleaning assembly includes a cleaning shell (14), a drive plate (16), a drive groove (17), a drive rod (18), a limiting rod (19), an arc plate (20), and a cleaning conduit (21). There are eight arc plates (20), and all eight arc plates (20) are rotatably embedded in the inner wall of the cleaning shell (14) through the limiting rod (19). The drive rod (18) is fixedly set at the bottom of the outer wall of the drive plate (16). The drive groove (17) is opened at the outer wall of the arc plate (20). The arc plate (20) is slidably sleeved on the bottom end of the drive rod (18) through the drive groove (17). The cleaning conduit (21) is fixedly set at the center of the bottom of the inner wall of the cleaning shell (14). The mounting bracket (5) is fixedly installed on the external servo control device. The inner wall of the mounting bracket (5) is threaded with a silver glue tube body (6), and the bottom end of the silver glue tube body (6) is threaded with a coating conduit (7). The coating conduit (7) is matched with the cleaning conduit (21), and the cleaning conduit (21) is connected to the external alcohol supply device through a hose. The piston top of the inner wall of the silver tube body (6) is fixedly installed on the external extrusion cylinder; The servo station (2) has adjustment slots (201) at the top corners of its outer wall, and suction cups (202) are slidably embedded in the inner wall of the adjustment slots (201). The input end of the suction cups (202) is connected to an external negative pressure device via a flexible hose. The servo stage (2) has a base plate (3) on the top of its outer wall, and the bottom of the outer wall of the base plate (3) is attached to the output end of the suction cup (202).

2. The automatic cleaning device for silver paste used in display screen production as described in claim 1, characterized in that: The top of the outer wall of each work plate (1) is fixed to the external position adjustment device by a bracket. An installation frame (5) is slidably embedded in the center of the inner wall of each work plate (1). A foam board (102) is embedded in the top of the outer wall of each work plate (1). A storage box (101) is embedded in the top of the outer wall of each work plate (1).

3. The automatic cleaning device for silver paste used in display screen production as described in claim 1, characterized in that: Coated electrodes (301) are deposited on both sides of the outer corner of the substrate (3), and alignment marks (302) are deposited on both sides of the outer corner of the substrate (3).

4. The automatic cleaning device for silver paste used in display screen production as described in claim 1, characterized in that: The coating conduit (7) is located directly above the coating electrode (301).

5. The automatic cleaning device for silver paste used in display screen production as described in claim 1, characterized in that: A drive gear (12) is fixedly installed on the bottom of the outer wall of the drive plate (16), and a cleaning motor (11) is installed on the bottom of the outer wall of both working plates (1). A driven gear (13) is fixedly installed at the output end of the cleaning motor (11). The drive gear (12) and the driven gear (13) are meshed and driven.

6. The automatic cleaning device for silver paste used in display screen production as described in claim 1, characterized in that: An angle motor (103) is installed on the top of the outer wall of each of the work plates (1), and the output end of the angle motor (103) extends to the bottom of the outer wall of the work plate (1). An installation rod (22) is fixedly installed on the output end of the angle motor (103), and one end of the installation rod (22) is fixedly installed on the outer wall of the cleaning shell (14).

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