3D glass cover plate machining jig
By setting heating components at the R-corner of the 3D glass cover for heat bonding, the problem of film wrinkles caused by cold bonding is solved, achieving a higher bonding effect and yield rate, and is suitable for products with various curvatures.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BENGBU LONGGUANG GLASS PROD CO LTD
- Filing Date
- 2025-05-21
- Publication Date
- 2026-05-01
AI Technical Summary
Existing cold bonding methods for 3D glass covers and films are prone to causing film wrinkles and separation at the R-corner positions, affecting the bonding effect and yield rate.
Multiple heating components are used to heat the R-corner area. The film is bonded to the 3D glass cover plate under heating by thermal bonding technology. The thermal conductivity of the aluminum alloy mold and the temperature sensor are used to control the temperature, ensuring uniform heating and precise positioning.
It improves the adhesion between the 3D glass cover and the film at the R-corner position, avoids wrinkles and bubbles, increases the yield rate of processing products, and is suitable for products with different curvatures.
Smart Images

Figure CN224183734U_ABST
Abstract
Description
A 3D glass cover processing fixture Technical Field
[0001] This utility model relates to the field of glass processing technology, and in particular to a 3D glass cover processing fixture. Background Technology
[0002] 3D glass covers are often an important part of the appearance of devices such as mobile phones and tablets, and their surfaces are easily scratched by hard objects such as keys and coins. Adhesive films can effectively prevent such scratches. Although the hardness of the protective film is relatively lower than that of glass, it can withstand wear and tear on its own, replacing damage to the glass cover. For example, some high-quality films use reinforced coating technology, achieving a hardness of 3H-4H (pencil hardness test), which can resist minor scratches during daily use.
[0003] The existing 3D glass cover and film bonding process uses cold bonding, which uses silicone to conformally press the film to deform it and bond it to the product. However, this method can cause wrinkles in the film at the rounded corners. Even after bonding, the film at the rounded corners may release tension when exposed to temperature changes, causing the film to separate from the product at the rounded corners. Therefore, improvement is urgently needed. Summary of the Invention
[0004] To address the technical problems existing in the background art, this utility model proposes a 3D glass cover plate processing fixture.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] A 3D glass cover processing fixture, characterized in that it comprises:
[0007] The mold has a slot for placing the 3D glass cover plate;
[0008] Multiple heating components are installed on the mold and are positioned one by one at multiple R-corner positions in the placement slot to heat the R-corner positions, thereby achieving the bonding between the film and the 3D glass cover.
[0009] Preferably, the heating component is a plurality of heating rods, and the mold has a plurality of mounting holes. The plurality of mounting holes are arranged at equal intervals along the rounded corner path of the R-angle, and the plurality of heating rods are fitted and installed in the plurality of mounting holes one by one.
[0010] Preferably, the mold material is aluminum alloy.
[0011] Preferably, it also includes a temperature sensor, and the temperature sensor, the heating rod, and the external power supply of the heating rod are connected in series.
[0012] Preferably, the mold has multiple grooves on the side away from the placement slot, and the multiple grooves are arranged in a one-to-one correspondence with multiple radius corners.
[0013] Preferably, the short side of the placement groove is provided with parallel and oppositely arranged positioning baffles, and the spacing between the positioning baffles is equal to that of the long side of the 3D glass cover.
[0014] Preferably, a rectangular groove is provided on the mold, and a through groove is provided at the position of the rectangular groove.
[0015] Compared with the prior art, the beneficial effects of this utility model are:
[0016] Compared with existing technologies, by achieving thermal bonding between the 3D glass cover and the film, the bonding effect between the corner of the 3D glass cover and the film can be effectively improved. This avoids bubbles or wrinkles caused by the release of tension on the film due to the bending angle of the corner, thereby improving the yield rate of the 3D glass cover during the bonding process. At the same time, it can also be applied to products with different corner curvatures, thus improving the overall applicability of the mold. Attached Figure Description
[0017] Figure 1 is a schematic diagram of the structure of the 3D glass cover plate processing fixture proposed in this utility model;
[0018] Figure 2 is a schematic diagram of the mold structure in the 3D glass cover processing fixture proposed in this utility model;
[0019] Figure 3 is an enlarged structural schematic diagram of point A in Figure 1 of this utility model.
[0020] In the figure: 1-mold, 11-groove, 12-mounting hole, 13-rectangular groove, 14-through groove, 15-placement groove, 16-positioning baffle, 2-heating component, 21-temperature sensor, 22-heating rod. Detailed Implementation
[0021] The technical solutions of the present utility model 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 utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0022] As shown in Figures 1-3, this embodiment provides a 3D glass cover processing fixture, including:
[0023] Mold 1, which has a placement groove 15 for placing a 3D glass cover plate;
[0024] Multiple heating components 2 are installed on the mold 1. The multiple heating components 2 are set one-to-one at multiple R-corner positions of the placement groove 15 and heat the R-corner positions to achieve the bonding between the film and the 3D glass cover.
[0025] Overall, when the heating component 2 is activated, the heat from the heating component 2 is conducted to multiple R-corner positions of the placement groove 15 through heat conduction. After the R-corner positions are heated, the film and the 3D glass cover are placed into the placement groove 15 in sequence, so that the 3D glass cover and the film are bonded to the R-corner positions under the heating state. After the heat bonding, the film will not experience secondary tension release, which can avoid the problem of wrinkles at the R-corner positions.
[0026] For 3D glass covers, the four corners form a certain curvature angle with the plane. Through heat bonding, the bonding effect at the rounded corners can be further improved.
[0027] As shown in Figures 1 and 3, in this embodiment, the heating component 2 specifically consists of multiple heating rods 22. The mold 1 has multiple mounting holes 12, which are arranged at equal intervals along the rounded corner path of the R-angle. The multiple heating rods 22 are fitted and installed in the multiple mounting holes 12 one by one.
[0028] Specifically, the heating component 2 consists of multiple heating rods 22. The heat generated by the heating rods 22 is transferred to the R-corner position of the placement groove 15, which can complete the thermal bonding process between the 3D glass cover and the film. By arranging multiple mounting holes 12 at equal intervals along the rounded corner path of the R-corner, the R-corner position can be heated more evenly, improving the thermal bonding effect between the 3D glass cover and the film.
[0029] As shown in Figures 1 and 2, in this embodiment, the mold 1 is made of aluminum alloy.
[0030] Specifically, mold 1 is made of aluminum alloy. Due to its high strength, it can provide strong support during the bonding process of the 3D glass cover. Furthermore, due to its good thermal conductivity, it can further improve the thermal conductivity of the R-corner position, thereby improving the thermal bonding effect of the 3D glass cover.
[0031] As shown in Figures 1 and 3, this embodiment also includes a temperature sensor 21, and the temperature sensor 21, the heating rod 22, and the external power supply of the heating rod 22 are connected in series.
[0032] Specifically, it also includes a temperature sensor 21, and the temperature sensor 21, the heating rod 22 and the external power supply of the heating rod 22 are connected in series. The heating rod 22 is heated by the external power supply. When the preset value of the temperature sensor 21 is reached, the entire circuit is immediately disconnected, that is, the heating of the heating rod 22 is stopped. The heating rod 22 transfers the temperature to the R-corner position of the mold 1 through heat conduction, so as to realize the thermal bonding process of the 3D glass cover. By setting the temperature sensor 21 to control the temperature of the heating rod 22, it is possible to avoid the situation that the bonding efficiency will decrease, bubbles will appear during the bonding process, or even the material properties will be damaged due to excessive temperature.
[0033] As shown in Figures 1 and 3, in this embodiment, the mold 1 has a plurality of grooves 11 on the side away from the placement groove 15, and the plurality of grooves 11 are arranged in a one-to-one correspondence with a plurality of R-angles.
[0034] Specifically, the mold 1 is provided with multiple grooves 11, which are arranged one-to-one with multiple R-corners. By setting the grooves 11, the height difference of one side of the mold 1 is realized. The positions of the grooves 11 and the R-corner positions are arranged one-to-one, which changes the height difference of the heating rod 22 of the mold 1. When the height difference changes, the path length of heat conduction of the heating rod 22 changes, which can concentrate the heat conduction to the R-corner position, effectively improve the heat conduction efficiency of the heating rod 22, and reduce energy consumption.
[0035] As shown in Figure 2, in this embodiment, the short side of the placement groove 15 is provided with parallel and oppositely arranged positioning baffles 16, and the spacing between the positioning baffles 16 is equal to that between the long sides of the 3D glass cover.
[0036] Specifically, the short side of the placement groove 15 is provided with parallel and relatively arranged positioning baffles 16. By setting the positioning baffles 16, the 3D glass cover can be accurately positioned to ensure the dimensional accuracy of the 3D glass cover and the film, thereby improving the heat bonding processing effect of the 3D glass cover.
[0037] As shown in Figure 1, in this embodiment, a rectangular groove 13 is provided on the mold 1, and a through groove 14 is provided at the position of the rectangular groove 13.
[0038] Specifically, a rectangular groove 13 is provided on the mold 1, and a through groove 14 is provided at the position of the rectangular groove 13. The rectangular groove 13 can further improve the lightweight of the mold 1, reduce the production cost of the mold 1 and improve the production efficiency of the mold 1. By setting the through groove 14, during the heat bonding process of the 3D glass cover and the film, the air inside the placement groove 15 can be effectively discharged, improving the heat bonding effect between the 3D glass cover and the film.
[0039] Of course, those skilled in the art will recognize that this invention is not limited to the details of the exemplary embodiments described above, but also includes the same or similar structures that can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0040] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
[0041] The technologies, shapes, and structures not described in detail in this utility model are all known technologies.
Claims
1. A 3D glass cover processing fixture, characterized in that, include: Mold (1), the mold (1) is provided with a placement groove (15) for placing the 3D glass cover plate; multiple heating components (2), the heating components (2) are installed on the mold (1), the multiple heating components (2) are set one by one at multiple R-corner positions of the placement groove (15), and the R-corner positions are heated to achieve the bonding between the film and the 3D glass cover plate.
2. The 3D glass cover processing fixture according to claim 1, characterized in that, The heating component (2) is specifically multiple heating rods (22). The mold (1) has multiple mounting holes (12). The multiple mounting holes (12) are arranged at equal intervals along the rounded corner path of the R-angle. The multiple heating rods (22) are fitted and installed in the multiple mounting holes (12).
3. The 3D glass cover processing fixture according to claim 1 or 2, characterized in that, The mold (1) is made of aluminum alloy.
4. The 3D glass cover processing fixture according to claim 2, characterized in that, It also includes a temperature sensor (21), and the temperature sensor (21), the heating rod (22), and the external power supply of the heating rod (22) are connected in series.
5. The 3D glass cover processing fixture according to claim 1, characterized in that, The mold (1) has multiple grooves (11) on the side away from the placement groove (15), and the multiple grooves (11) are arranged in a one-to-one correspondence with multiple R-angles.
6. The 3D glass cover processing fixture according to claim 1, characterized in that, The short side of the placement slot (15) is provided with parallel and oppositely arranged positioning baffles (16), and the spacing between the positioning baffles (16) is equal to that between the long sides of the 3D glass cover.
7. The 3D glass cover processing fixture according to claim 1, characterized in that, A rectangular groove (13) is provided on the mold (1), and a through groove (14) is provided at the position of the rectangular groove (13).