Multi-curved glass film pasting device and film pasting method

Abstract

The application discloses a kind of multi-curved surface glass film pasting device and film pasting method, belong to glass film pasting technical field, including the loading part for loading glass, two identical rollers are symmetrically arranged above and below the loading part, respectively as upper roller and lower roller, the roller is circular truncated cone, the upper bottom diameter of the roller is 20~100mm, the lower bottom diameter is 60~150mm, and the height is 500~800mm;The application can realize the "U" letter shape glass of plane in the middle and curved surface at both ends to be pasted film once process, "S" letter shape multi-curved surface curved glass, multi-curved surface edge and middle curved surface "W" letter shape glass can also be pasted film once, improve the film pasting quality and efficiency.

Description

Technical Field

[0001] This invention relates to the field of glass film technology, and in particular to a multi-curved glass film application device and method. Background Technology

[0002] To expand the driver's field of vision and improve concentration, curved glass is currently used in automotive dashboards and displays. In particular, with the availability of high-pixel, low-power OLED screens for electric and autonomous vehicles, the demand for multi-curved glass products is increasing to meet the diverse design needs of vehicles. Unlike 2D TFT-LCD screens, OLED screens are multi-curved glass. To improve pixel count and transmittance, anti-glare, anti-reflective, and anti-fingerprint films need to be applied to the display surface.

[0003] Current film application methods all use cylindrical rollers. However, because these cylindrical rollers have a uniform diameter, when applying film to curved glass, gaps, air bubbles, and wrinkles can occur between the glass and the film. Furthermore, successful application in a single pass is impossible, making it difficult to apply film to 3D curved glass within a vacuum chamber. If different pressure values ​​are applied, the film may tear or thin, resulting in low efficiency, high cost, and poor performance. This is particularly problematic for multi-curved glass with "S" shapes, where conventional roller pressure or vacuum application methods are insufficient. Summary of the Invention

[0004] One of the objectives of this invention is to provide a multi-curved glass film application device to solve the above-mentioned problems.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a multi-curved glass film application device includes a loading part for loading glass. Two identical rollers, an upper roller and a lower roller, are symmetrically arranged above and below the loading part. The rollers are frustoconical in shape, with an upper bottom diameter of ∅20~100mm, a lower bottom diameter of ∅60~150mm, and a height of 500~800mm. Each roller has a connecting shaft at both ends and a bracket. A sliding groove is provided on the inner side of both sides of the bracket. An inverter and a servo motor are provided on the outer side of the bracket. The connecting shaft is slidably connected in the sliding groove, and the inverter and servo motor are electrically connected to the connecting shaft.

[0006] During the film application process, the glass and the roller maintain line contact to ensure the quality of the film application.

[0007] This invention is applicable to various multi-curved glass film application operations, and solves the problems of film tearing, film wrinkling, and film thinning caused by stretching when using existing cylindrical rollers for multi-curved glass film application.

[0008] As a preferred technical solution, a heater is provided inside the roller, and the temperature of the heater is maintained at 60-80°C.

[0009] As a preferred technical solution, the roller is made of polyurethane material with a hardness of 60-80 Shore A. Using appropriate materials and material hardness ensures smooth film application. If the hardness is too high, the glass may break during the film application process. If the hardness is too low, the pressure will be insufficient, resulting in insufficient film adhesion.

[0010] The second objective of this invention is to provide a method for applying a film using the aforementioned multi-curved glass film-applying device, the technical solution of which includes the following steps: (1) Design the diameter and height of the upper and lower bottom surfaces of the upper and lower rollers according to the curvature and angle of the multi-curved glass to be coated; (2) Place the curved glass to be coated on the loading part, place the film on the surface of the curved glass, then cut the film, and then attach the upper roller and the lower roller to the curved glass and / or the film; (3) Use an inverter to control the rotation speed of the upper roller and the lower roller, and control the pressure of the upper roller and the lower roller on the multi-curved glass so that the film is tightly bonded to the multi-curved glass.

[0011] As a preferred technical solution, in step (2), when cutting the film, leave a length of 20mm from the outer perimeter of the multi-curved glass plane unfolded diagram, and remove the excess perimeter after the film is applied.

[0012] As a preferred technical solution, in step (3), after the film is applied and the edges are cut off, it is placed in a vacuum degassing machine to remove fine air bubbles.

[0013] As a preferred technical solution, bubble removal involves applying 5-20 kg / cm³ of heat at a vacuum degassing machine at a temperature of 60-80°C. 2 Degassing is performed under pressure.

[0014] Compared with the prior art, the advantages of the present invention are: the present invention can apply film to "U" shaped glass with a flat middle and curved ends on both sides in one process, and can also apply film to "S" shaped multi-curved glass, multi-curved edges and "W" shaped glass with a curved middle in one process, thus improving the quality and efficiency of film application. Attached Figure Description

[0015] Figure 1 This is a structural diagram of the film-applying device of the present invention; Figure 2 The “S”-shaped glass of Embodiment 1 of the present invention; Figure 3 This refers to the "W"-shaped glass of Embodiment 2 of the present invention.

[0016] In the diagram: 1. Upper roller; 2. Lower roller; 3. Multi-curved glass; 4. Connecting shaft; 5. Bracket; 6. Slide; 7. Servo motor. Detailed Implementation

[0017] The invention will now be further described with reference to the accompanying drawings.

[0018] Example 1: See Figure 1 A multi-curved glass film application device includes a loading section for loading multi-curved glass 3. Two identical rollers, an upper roller 1 and a lower roller 2, are symmetrically arranged above and below the loading section. Each roller is frustoconical, with an upper bottom diameter of ∅60mm, a lower bottom diameter of ∅120mm, and a height of 600mm. Each roller has a connecting shaft 4 at both ends and a bracket 5. A sliding groove 6 is provided on the inner side of both sides of the bracket 5. An inverter and a servo motor 7 are provided on the outer side of the bracket 5. The connecting shaft 4 is slidably connected in the sliding groove 6, and the inverter, servo motor 7, and connecting shaft 4 are electrically connected. This embodiment is as follows: Figure 2 The application of film to the "S"-shaped glass shown includes the following steps: (1) Design the diameter and height of the upper and lower bottom surfaces of the upper and lower rollers according to the curvature and angle of the multi-curved glass to be coated; (2) Place the curved glass to be coated on the loading part, place the film on the surface of the curved glass, then cut the film, and then attach the upper roller and the lower roller to the curved glass and the film; (3) Use an inverter to control the rotation speed of the upper roller and the lower roller, and adjust the position of the connecting shaft in the groove to control the pressure of the upper roller and the lower roller on the multi-curved glass, so that the film is tightly bonded to the multi-curved glass; After the film is applied and the edges are trimmed, it is placed in a vacuum degassing machine to remove fine air bubbles. This degassing process involves applying 15 kg / cm² of heat at 70°C in the vacuum degassing machine. 2 Degassing is performed under pressure.

[0019] Example 2: This embodiment is as follows: Figure 3 The film application method for the "W"-shaped glass shown is similar to that in Example 1.

[0020] 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. A multi-curved surface glass film attaching device, characterized by, The device includes a loading section for loading glass. Two identical rollers, an upper roller and a lower roller, are symmetrically arranged above and below the loading section. Each roller is frustoconical in shape, with an upper base diameter of ∅20–100 mm, a lower base diameter of ∅60–150 mm, and a height of 500–800 mm. The upper and lower base diameters and heights are designed according to the curvature and angle of the multi-curved glass to be coated, ensuring line contact between the roller and the multi-curved glass during coating. Each roller has a connecting shaft at both ends and a bracket. Slide grooves are provided on the inner sides of both sides of the bracket, and an inverter and a servo motor are provided on the outer side of the bracket. The connecting shaft is slidably connected within the slide groove, and the inverter and servo motor are electrically connected to the connecting shaft. A heater is installed inside the roller, and the temperature of the heater is maintained at 60-80°C. The roller is made of polyurethane material with a hardness of 60-80 Shore A.

2. A method for attaching a film using the multi-curved glass film-attaching device of claim 1, wherein, Includes the following steps: (1) Design the diameter and height of the upper and lower bottom surfaces of the upper and lower rollers according to the curvature and angle of the multi-curved glass to be coated; (2) Place the curved glass to be coated on the loading part, place the film on the surface of the curved glass, then cut the film, and then attach the upper roller and the lower roller to the curved glass and / or the film; (3) Use an inverter to control the rotation speed of the upper roller and the lower roller, and control the pressure of the upper roller and the lower roller on the multi-curved glass so that the film is tightly bonded to the multi-curved glass.

3. The method of claim 2, wherein, In step (2), when cutting the film, leave a 20mm length from the outer perimeter of the multi-curved glass plane unfolded diagram, and remove the excess perimeter after the film is applied.

4. The method of claim 3, wherein, In step (3), after the film is applied and the edges are cut off, it is placed in a vacuum degassing machine to remove fine air bubbles.

5. The method of claim 4, wherein, Deaeration is carried out in a vacuum deaerator 60-80°C temperature under application of 5-20 Kg / cm 2 pressure.

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