A touch screen glass panel screen printing device

Abstract

The application discloses a screen printing device for a touch screen glass panel, which comprises a rotating disc driven to rotate by a servo motor, a feeding and discharging assembly, a dust removal assembly and a screen printing assembly arranged in sequence along the circumference of the rotating disc; the feeding and discharging assembly is used for grabbing the glass panel to realize feeding and discharging of the rotating disc; the dust removal assembly is used for removing dust from the glass panel; and the screen printing assembly is used for screen printing the glass panel. The application realizes automatic feeding, dust removal and screen printing.

Description

Technical Field

[0001] This utility model relates to the field of touch screen glass panel processing technology, specifically to a touch screen glass panel screen printing device. Background Technology

[0002] The screen printing process for touchscreen glass panels is a key process that transfers ink to the glass surface using screen printing technology, enabling the printing of decorative patterns, functional coatings, or conductive lines. Specifically, the glass is fixed on the screen printing machine's worktable, the printing block presses against the glass surface, and the squeegee inside the printing block applies specific pressure to force the ink through the mesh on the printing block and onto the glass surface, forming a uniform ink layer.

[0003] Existing technology CN214727274U discloses a semi-automatic screen printing machine for mobile phone camera glass. It achieves indirect rotation of the screen printing table through the cooperation of a drive motor, drive disc, protruding column, and strip groove. This, combined with a printing drive device, enables the vertical movement of the printing block, thus improving the automation efficiency of the screen printing process to some extent. The device mainly consists of a base plate, chassis, screen printing table, side plate, rotating rod, movable turntable, connecting disc, and drive device. It has a multi-screen printing table switching function, but overall it still falls into the category of semi-automatic equipment. Although the existing technology achieves automatic switching of the screen printing table, the loading and unloading process still relies on manual operation. Furthermore, this semi-automatic screen printing machine does not integrate a professional dust removal device, relying only on manual pre-treatment or environmental dust removal, which cannot specifically solve the problem of electrostatic adsorption on the glass surface. Actual test data shows that if the touchscreen glass panel is not thoroughly dust-free, the defect rate of white spots, broken lines, etc., after screen printing is as high as 8-10%.

[0004] The applicant previously applied for a multi-purpose optical testing device (CN116858495A), which uses a loading assembly to move glass plates onto a turntable. Specifically, a suction cup on the loading robot picks up the glass plate from the product tray and places it onto the turntable. The turntable motor drives the turntable to rotate, causing the glass plate to sequentially pass through a PV value tester, an IR tester, and a camera aperture stripe tester, completing the PV value test, IR test, and camera aperture stripe test in sequence. Glass plates that pass the tests are removed by the loading robot and placed back into the product tray, while those that fail are placed on a defective product temporary storage tray. Therefore, the applicant, combining existing technology with a previously developed multi-purpose optical testing device and dust removal equipment, has created a fully automated touchscreen glass panel screen printing device. Utility Model Content

[0005] The present invention aims to provide a screen printing device for touch screen glass panels, which integrates a dust removal function.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A screen printing device for touch screen glass panels includes: a turntable driven by a servo motor to rotate; a feeding and receiving component, a dust removal component, and a screen printing component arranged sequentially along the circumference of the turntable; the feeding and receiving component is used to grip the glass panel to load and unload the turntable; the dust removal component is used to remove dust from the glass panel; and the screen printing component is used to screen print on the glass panel.

[0008] The working principle and beneficial effects of this utility model:

[0009] The take-up and unload assembly picks up a glass panel and places it on a turntable. The turntable is driven by a servo motor and rotates intermittently at a preset angle, causing the glass panel to pass sequentially through a dust removal assembly and a screen printing assembly. The dust removal assembly cleans the surface of the glass panel, and then the turntable rotates to the screen printing assembly to complete the ink printing. The take-up and unload assembly then picks up the printed glass panel and removes it from the turntable. The take-up and unload assembly then picks up a new glass panel and places it on the turntable, repeating the above operation.

[0010] Compared to the semi-automatic manual loading and unloading of the existing technology CN214727274U, this application realizes automated operation of loading, dust removal and screen printing.

[0011] The optimization also includes a workbench, on which the servo motor, feeding and receiving components, dust removal components, and screen printing assembly are all mounted.

[0012] The optimized material handling assembly includes a robotic arm and a vacuum suction cup located at the free end of the robotic arm. The robotic arm drives the vacuum suction cup to move and pick up the glass panel to realize the loading and unloading of the turntable.

[0013] The vacuum suction cup at the end of the robotic arm is connected to a negative pressure air source to adsorb the glass panel. The robotic arm picks up the glass panel from the feeding tray, moves it to the turntable, and releases the vacuum to complete the loading. After screen printing, the robotic arm reverses the movement to unload the glass panel onto the discharge tray.

[0014] The optimized dust removal assembly includes a first cylinder fixedly connected to the workbench and a movable plate fixed to the movable end of the first cylinder. The movable plate is provided with a strip-shaped air nozzle that blows air toward the glass panel.

[0015] The first cylinder drives the moving plate to move up and down. When the glass panel reaches the dust removal station with the turntable, the cylinder extends and the moving plate descends to a position 2 cm above the glass surface. Compressed air is then sprayed out through the strip nozzle to blow away the surface dust.

[0016] The optimized screen printing assembly includes a printing block, a squeegee, and mesh openings on the printing block. The printing block is made of carbon fiber, and the squeegee moves along the surface of the screen, pressurizing and forcing ink through the mesh openings to form an ink layer on the glass surface.

[0017] The optimized worktable is equipped with a bracket for securing the glass panel. The glass panel is placed on the bracket by the feeding and receiving assembly to ensure its position is fixed.

[0018] The optimization also includes a dehumidification component, comprising a reservoir and a connected nozzle. The nozzle sprays water mist that forms a thin water film in the air, suppressing secondary static electricity generation. Attached Figure Description

[0019] Figure 1 A top view of a screen printing device for a touchscreen glass panel;

[0020] Figure 2 for Figure 1 A schematic diagram of the structure of the robotic arm;

[0021] Figure 3 for Figure 1 Schematic diagram of the dust removal component;

[0022] Figure 4 for Figure 1 Schematic diagram of the structure of the screen printing component;

[0023] Figure 5 for Figure 4 A schematic diagram of the printing process;

[0024] Figure 6 This is a vertical cross-sectional view of the screen-printed component;

[0025] Figure 7 for Figure 6 A schematic diagram of the structure when the ink is applied back and forth.

[0026] The reference numerals in the accompanying drawings include: 1. Robotic arm; 2. Workbench; 3. Glass panel; 4. Turntable; 5. Bracket; 101. Operating arm; 102. Machine body; 103. Lifting plate; 6. First cylinder; 7. Moving plate; 8. Strip nozzle; 9. Air pump; 10. Vacuum suction cup; 11. Third cylinder; 12. Printing block; 13. Fourth cylinder; 14. Mesh; 15. Scraper. Detailed Implementation

[0027] The following detailed description illustrates the specific implementation method:

[0028] In the following statements, directional terms such as "left," "right," "up," and "down" are based on the directions shown in the diagram. In practice, if the corresponding structures are changed in the same direction based on the direction while maintaining their relative positions, it will not affect the implementation of the plan.

[0029] Example: A screen printing device for touchscreen glass panels, such as Figure 1 As shown, the assembly includes a worktable 2, a servo motor, a feeding and receiving assembly, a dust removal assembly, and a screen printing assembly. The servo motor and the worktable 2 are fixedly connected. The movable end of the servo motor drives a turntable 4. A bracket 5 for supporting the glass panel 3 is fixedly installed on the turntable 4. The feeding and receiving assembly, the dust removal assembly, and the screen printing assembly are arranged in sequence in a counterclockwise direction along the turntable 4.

[0030] like Figure 3 As shown, the dust removal assembly includes a support frame fixedly connected to the workbench 2. The support frame is fixed with a first cylinder 6, an air pump 9, and a movable plate 7 fixed to the movable end of the first cylinder 6. The movable plate 7 is fixed with a strip-shaped air nozzle that blows air toward the glass panel 3. The strip-shaped air nozzle is connected to the air pump 9 through a flexible pipe.

[0031] like Figure 2 As shown, the material receiving and unloading assembly includes a robotic arm 1, which includes a body 102, an operating arm 101, and a lifting plate 103. The body 102 and the worktable 2 are fixedly connected. The body 102 is fixedly equipped with a rotary motor that drives the operating arm 101 to rotate. The operating arm 101 is fixedly equipped with a second cylinder. The movable end of the second cylinder drives the lifting plate 103. The lifting plate 103 is fixedly connected to a vacuum suction cup 10. The vacuum suction cup 10 generates negative pressure through a negative pressure pump connected to a flexible pipe.

[0032] like Figure 6 As shown, the screen printing assembly includes a hollow printing block 12, two squeegees 15, and mesh 14 on the printing block 12. The squeegees 15 are driven by a third cylinder 11 to scrape back and forth. The third cylinder 11 and the printing block 12 are fixedly connected. The worktable 2 is fixedly provided with a fourth cylinder 13 that drives the printing block 12 to move up and down.

[0033] The lifting plate 103 and vacuum suction cup 10 move to directly above the product tray. The second cylinder operates, causing the lifting plate 103 to move toward a glass panel 3 inside the product tray, so that the vacuum suction cup 10 adheres to the glass panel 3. The external negative pressure pump operates to extract the air from the vacuum suction cup 10, and the vacuum suction cup 10 generates suction to firmly hold the glass panel 3. The movable end of the second cylinder retracts, lifting the glass panel 3 upward through the lifting plate 103 and vacuum suction cup 10. In conjunction with the rotation motor driving the operating arm 101 to rotate, the glass panel 3 rotates onto the bracket 5 and is aligned. The negative pressure pump stops working, the vacuum suction cup 10 stops working and does not generate suction, and the glass panel 3 detaches and falls onto the bracket 5.

[0034] A servo motor drives a turntable 4, which rotates slowly, causing the glass panel 3 to rotate to the dust removal component. The first cylinder 6 drives the moving plate 7 to move downward. The moving plate 7 descends to a position 2 cm above the surface of the glass panel 3. The air pump 9 supplies air to the strip nozzle 8, and compressed air is sprayed out through the strip nozzle to blow away the surface dust.

[0035] Subsequently, when the glass panel 3 arrives at the screen printing station along with the turntable 4, the third cylinder 11 drives two squeegees 15 to push the ink back and forth, squeezing the ink through the mesh 14. The fourth cylinder 13 drives the printing block 12 to move downwards and contact the glass panel 3. The ink that has passed through the mesh 14 covers the glass panel 3, completing the printing. Then, the glass panel 3 moves with the turntable 4 to the robot arm 1, which removes the glass panel 3 and places it into the product tray (this process is the reverse of the loading process and will not be described in detail).

[0036] In an optimized configuration, the movable plate 7 is also fixed with an ion air bar. When the movable plate 7 descends to a position 2 cm above the glass surface, the ion air bar first releases positive and negative ions to neutralize static electricity, and then compressed air is sprayed out through the strip nozzle to blow away surface dust.

[0037] The above-mentioned robotic arm 1 and screen printing components are all existing technologies. For ease of understanding, the above structural components have been supplemented. However, the improvement of this application is not the robotic arm 1 and screen printing components, but the combination to add functions.

[0038] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as screws, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

Claims

1. A screen printing device for a touchscreen glass panel, characterized in that: include: The turntable is driven by a servo motor to rotate, and material feeding and receiving components, dust removal components, and screen printing components are arranged sequentially along the circumference of the turntable. The material handling assembly is used to grip glass panels to load and unload them onto the turntable. Dust removal components are used to remove dust from glass panels; Screen printing assembly, used for screen printing on glass panels.

2. The screen printing device for touch screen glass panels according to claim 1, characterized in that: It also includes a workbench, on which the servo motor, feeding and receiving components, dust removal components, and screen printing components are all mounted.

3. The screen printing device for a touchscreen glass panel according to claim 2, characterized in that: The loading and unloading assembly includes a robotic arm and a vacuum suction cup located at the free end of the robotic arm. The robotic arm drives the vacuum suction cup to move and pick up the glass panel to realize the loading and unloading of the turntable.

4. The screen printing device for a touchscreen glass panel according to claim 3, characterized in that: The dust removal assembly includes a first cylinder fixedly connected to the workbench and a movable plate fixed to the movable end of the first cylinder. The movable plate is provided with a strip-shaped air nozzle that blows air toward the glass panel.

5. The screen printing device for a touchscreen glass panel according to claim 4, characterized in that: The screen printing assembly includes a printing block, a squeegee, and mesh holes disposed on the printing block.

6. The screen printing device for a touchscreen glass panel according to claim 5, characterized in that: The workbench is equipped with a bracket for fixing the glass panel.

7. The screen printing device for a touchscreen glass panel according to claim 6, characterized in that: It also includes a dehumidification assembly, including a reservoir and a nozzle connected thereto.

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