Front and back surface film coating jig for 3D curved glass processing

By designing a lamination fixture adapted to the curvature of 3D curved glass and adopting structures such as horizontal circular grooves and injection grooves, the problem of low matching degree of traditional fixtures is solved, achieving a film-applying effect without bubbles or wrinkles, and improving lamination efficiency and production efficiency.

CN224545333UActive Publication Date: 2026-07-24DONGGUAN JINGWEIDA TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
DONGGUAN JINGWEIDA TECH CO LTD
Filing Date
2025-08-05
Publication Date
2026-07-24

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Abstract

The utility model provides a kind of front and back face film laminating jig for 3D curved surface glass processing, it is related to glass processing technical field, comprising: front face film laminating jig body and back face film laminating jig body, the front face film laminating jig body and back face film laminating jig body one end are symmetrically provided with horizontal circular groove, the surface of the front face film laminating jig body and back face film laminating jig body and located horizontal circular groove are all provided with injection groove with equal interval, the injection groove all with horizontal circular groove are interconnected.3D curved surface glass front or back arc is customized according to the utility model, perfect glass arc is adhered, film bubble and wrinkle are avoided from source, protection effect is guaranteed, by horizontal circular groove, injection groove, convex hole and other structures, it is convenient to install, debug and operate on film laminating machine, operation process is optimized, it is adapted to large-scale production rhythm, and film laminating efficiency is greatly improved.
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Description

Technical Field

[0001] This utility model relates to the field of glass processing technology, and in particular to a front and back coating fixture for processing 3D curved glass. Background Technology

[0002] The front and back laminating fixture is used to protect the front and back of the polished clear glass when it becomes a product to be transferred for printing. It is a tool that helps to apply a protective film. 3D curved glass needs to go through many processes to become a good piece of clear glass (to be transferred for printing). For example, large pieces of raw glass are cut into smaller pieces, hot-bent, CNC machined into 3D curved surfaces, and the front and back of the glass are polished and ground to finally become a qualified clear sheet. After it becomes a product to be transferred for printing, whether the clear sheet is put into storage or transferred in the middle, it is necessary to use the front and back laminating auxiliary tool to apply the film to protect the clear sheet.

[0003] Traditional 3D curved glass processing fixtures for front and back lamination typically have a low degree of matching between the fixture's contoured surface and the 3D curved glass, which can easily lead to bubbles and wrinkles during lamination, failing to effectively protect the glass surface. Furthermore, the fixture design is not adapted to production needs, making installation, debugging, and operation cumbersome and difficult to meet the pace of large-scale production. At the same time, the structural design does not take into account actual production scenarios, making installation and debugging on the laminating machine difficult and increasing the workload of workers. Utility Model Content

[0004] This utility model mainly provides a front and back coating fixture for 3D curved glass processing that is adapted to the pace of large-scale production and greatly improves coating efficiency.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a front and back coating fixture for processing D-curved glass, comprising: a front coating fixture body and a back coating fixture body, wherein a horizontal circular groove is symmetrically formed at one end of both the front and back coating fixture bodies, and injection grooves are equally spaced on the surface of both the front and back coating fixture bodies at the horizontal circular grooves, wherein the injection grooves are interconnected with the horizontal circular grooves, and a vertical circular groove is formed at the top and near the center of both the front and back coating fixture bodies, and a circular groove and an elliptical groove are formed on the rear wall of both the front and back coating fixture bodies.

[0006] Preferably, all four corners of the front-facing film-coating fixture body are rounded. This design can prevent construction workers from being accidentally injured by the four corners of the front-facing film-coating fixture body.

[0007] Preferably, the front and back coating fixture bodies are symmetrically provided with convex holes on their surfaces near the center. This arrangement can achieve the effect of accurately aligning the coating area of ​​the protective film with the glass on the fixture.

[0008] Preferably, two first mounting slots are provided at one end of both the front and back film-coating fixture bodies. This arrangement can effectively fix the front and back film-coating fixture bodies in place.

[0009] Preferably, the bottom of the front coating fixture body has two symmetrically provided second mounting slots. With the above arrangement, the bottom of the front coating fixture body can be installed and fixed.

[0010] Preferably, grooves are provided at one end and the center of the bottom of the back-coated fixture body. This design allows the fixture to be quickly inserted and positioned, replacing the cumbersome process of traditional bolt tightening.

[0011] Compared with the prior art, the advantages and positive effects of this utility model are as follows: 1. In this utility model, the front film-coating fixture body and the back film-coating fixture body are customized according to the front or back arc shape of the 3D curved glass, perfectly fitting the curvature of the glass, avoiding bubbles and wrinkles in the film from the source, and ensuring the protective effect.

[0012] 2. In this utility model, the structure of horizontal circular groove, injection groove, and convex hole facilitates quick installation, debugging and operation on the laminating machine, optimizes the operation process, adapts to the pace of large-scale production, and greatly improves laminating efficiency.

[0013] 3. In this utility model, the design of the first mounting groove, the second mounting groove, and the groove simplifies the steps of fixing and adjusting the fixture on the laminating machine, reduces the difficulty of operation for workers, and speeds up the production preparation process. Attached Figure Description

[0014] Figure 1 This utility model provides a structural diagram of the front coating fixture body of a 3D curved glass processing front and back coating fixture. Figure 2 This utility model provides a top-view structural plan of the front-side coating fixture body of a 3D curved glass processing fixture. Figure 3 This utility model provides a side view of the front coating fixture body of a 3D curved glass processing fixture with front and back coating. Figure 4 This utility model provides a structural diagram of the back-side coating fixture body for a 3D curved glass processing fixture with front and back coating. Figure 5 This utility model provides a bottom view of the back-side coating fixture body of a 3D curved glass processing front and back coating fixture. Figure 6This utility model proposes a side view of the back-side coating fixture body of a 3D curved glass processing fixture with front and back coating.

[0015] Legend: 1. Front coating fixture body; 2. Back coating fixture body; 3. Horizontal circular groove; 4. Injection groove; 5. Vertical circular groove; 6. First mounting groove; 7. Convex hole; 8. Circular groove; 9. Elliptical groove; 10. Second mounting groove; 11. Groove. Detailed Implementation

[0016] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0017] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0018] Please see Figures 1-2 This utility model provides a technical solution: a front and back coating fixture for processing 3D curved glass, comprising: a front coating fixture body 1 and a back coating fixture body 2. Both the front coating fixture body 1 and the back coating fixture body 2 have symmetrically formed horizontal circular grooves 3 at one end. Injection grooves 4 are equally spaced on the surfaces of both the front coating fixture body 1 and the back coating fixture body 2 at the locations of the horizontal circular grooves 3. The injection grooves 4 are all interconnected with the horizontal circular grooves 3. The front coating fixture body 1 and the back coating fixture body 2... Vertical circular grooves 5 are provided at the top and near the center. Circular grooves 8 and elliptical grooves 9 are provided on the rear walls of both the front and back coating fixture bodies 1 and 2. These features allow the horizontal circular grooves 3 and injection grooves 4 on the fixture to help guide air and prevent air bubbles from remaining. The vertical circular grooves 5 can adapt to the curvature of the glass, allowing the protective film to conform to the shape. If a protective film with adhesive is used, the injection grooves 4 can also help distribute the adhesive evenly as needed, ultimately achieving a wrinkle-free and bubble-free bonding effect between the protective film and the glass.

[0019] like Figure 1 As shown, the four corners of the front coating fixture body 1 are all rounded. This design can prevent construction workers from being accidentally injured by the four corners of the front coating fixture body 1.

[0020] like Figure 2 and Figure 3As shown, convex holes 7 are symmetrically provided on the surfaces of the front coating fixture body 1 and the back coating fixture body 2 near the center. Through the above-mentioned arrangement, the coating area of ​​the protective film can be accurately aligned with the glass on the fixture.

[0021] like Figure 3 and Figure 6 As shown, two first mounting slots 6 are provided at one end of both the front coating fixture body 1 and the back coating fixture body 2. With the above arrangement, the front coating fixture body 1 and the back coating fixture body 2 can be installed and fixed.

[0022] like Figure 1 As shown, two second mounting slots 10 are symmetrically provided at the bottom of the front coating fixture body 1. With the above-mentioned arrangement, the bottom of the front coating fixture body 1 can be installed and fixed.

[0023] like Figure 4 and Figure 5 As shown, grooves 11 are provided at one end and the center of the bottom of the back-coated fixture body 2. With the above-mentioned setting, the back-coated fixture body 2 can be quickly inserted and positioned, replacing the cumbersome process of traditional bolt fastening.

[0024] The usage and working principle of this device are as follows: Based on the mounting interface of the laminating machine base, the first mounting groove 6, the second mounting groove 10, and the recess 11 on the front and back laminating fixture bodies 2 are used to precisely fix the fixture in the working area of ​​the laminating machine using bolts, clips, and other connecting parts. This step requires ensuring that the fixture is level and free from wobbling, establishing a stable reference for subsequent film application. When glass positioning is required, it is necessary to distinguish between the front and back of the 3D curved glass, placing the front or back of the glass to be laminated onto the corresponding front or back laminating fixture body 1 or back laminating fixture body 2. Since the fixture is a contoured structure customized according to the glass curvature, the glass can completely fit the curved surface of the fixture after placement, achieving initial positioning and preventing glass displacement from affecting the film application accuracy. At this time, the protective film needs to be prepared and aligned. Rolls or sheets of protective film can be neatly arranged on the unwinding or carrying mechanism at the top of the laminating machine. Start the laminating machine and adjust the X-axis left-right direction and Y-axis forward-backward direction movement mechanism to precisely align the laminating area of ​​the protective film with the glass on the fixture. This process relies on the position sensor of the laminating machine and the positioning marks of the convex hole 7, circular groove 8, and elliptical groove 9 on the fixture to ensure alignment accuracy. At this point, lamination can begin. The laminating machine uses robotic arms, rollers, and other actuators to press or push the protective film onto the glass surface. The horizontal circular groove 3 and injection groove 4 on the fixture help to guide air and prevent air bubbles from remaining. The vertical circular groove 5 adapts to the curvature of the glass, allowing the protective film to conform to the shape. If using a protective film with adhesive, the injection groove 4 can also help distribute the adhesive evenly. Ultimately, this achieves a wrinkle-free and bubble-free bond between the protective film and the glass. After a single lamination is completed, if there is residual adhesive or dust on the fixture surface, it can be cleaned with a soft cloth and a special cleaning agent. The surface roughness of the contoured curved surface must be at least RA3.2. After long-term use, if the fixture becomes worn or deformed, the detachable structure of the mounting groove and recess 11 can be used to replace damaged parts or the entire fixture, ensuring stable subsequent lamination quality.

[0025] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A front and back coating fixture for processing 3D curved glass, characterized in that, include: The front-facing film-coating fixture body (1) and the back-facing film-coating fixture body (2) are provided with horizontal circular grooves (3) symmetrically opened at one end of the front-facing film-coating fixture body (1) and the back-facing film-coating fixture body (2). Injection grooves (4) are equally spaced on the surface of the front-facing film-coating fixture body (1) and the back-facing film-coating fixture body (2) located at the horizontal circular grooves (3). The injection grooves (4) are all connected to the horizontal circular grooves (3). Vertical circular grooves (5) are opened at the top of the front-facing film-coating fixture body (1) and the back-facing film-coating fixture body (2) near the center. Circular grooves (8) and elliptical grooves (9) are opened on the rear wall of the front-facing film-coating fixture body (1) and the back-facing film-coating fixture body (2).

2. The front and back coating fixture for processing 3D curved glass according to claim 1, characterized in that: The four corners of the front-facing film-coated fixture body (1) are all rounded.

3. The front and back coating fixture for processing 3D curved glass according to claim 1, characterized in that: The front-side film-coated fixture body (1) and the back-side film-coated fixture body (2) are symmetrically provided with convex holes (7) near the center.

4. A front and back coating fixture for processing 3D curved glass according to claim 1, characterized in that: Two first mounting slots (6) are provided at one end of both the front-side film-coated fixture body (1) and the back-side film-coated fixture body (2).

5. A front and back coating fixture for processing 3D curved glass according to claim 1, characterized in that: The bottom of the front-facing film-coated fixture body (1) has two symmetrical second mounting slots (10).

6. A front and back coating fixture for processing 3D curved glass according to claim 1, characterized in that: The back-coated fixture body (2) has grooves (11) at one end and at the center of the bottom.