Three-dimensional (3D) glass and preparation method thereof

Abstract

The invention discloses three-dimensional (3D) glass and a preparation method thereof. The method comprises the following steps: step 1, placing flat glass with a reserved allowance into a die; step 2, attaching and forming the flat glass on the upper surface of a female die of the die by adopting a heat adsorption process to obtain a 3D glass blank; step 3, cutting the 3D glass blank to obtain a 3D glass semi-finished product; step 4, carrying out computer-numerical-control (CNC) carving, grinding and chamfering on the 3D glass semi-finished product to obtain a 3D glass raw material; and step 5, carrying out shining treatment on the surface of the 3D glass raw material to obtain the 3D glass with a side wall part, a bending part and a window part. According to the invention, the yield of 3D glass production can be improved to be close to 100%, and the problem that in a process that the size of flat glass is pre-designed and then hot press forming and carving are carried out in a conventional 3D glass manufacturing method, the size of formed 3D glass is unqualified due to the fact that a placement position is deviated or the forming pressure is not uniform during hot-pressing molding is solved.

Description

technical field [0001] The invention relates to the technical field of electronic equipment, in particular to a 3D glass and a manufacturing method thereof. Background technique [0002] With the rapid development of electronic devices, in order to improve the aesthetics of electronic devices, 3D glass is used more and more. Most of the existing 3D glass production methods are as Figure 1-4 shown, including the following steps: [0003] Step S10, material cutting: cutting the large glass base material into small square glass pieces of preset size. [0004] Step S20, CNC engraving: the shape, hole, and chamfering of the square glass are processed by the engraving machine to form 2D glass with high-precision dimensions. [0005] Step S30, hot press molding: accurately put the 2D glass into the groove of the mold, the mold has at least a convex mold and a concave mold, the mold is heated to 700-750°C by the molding machine at high temperature, and after the glass plate is so...

AI Technical Summary

Problems solved by technology

[0008] 1. Low yield rate

[0009] During thermocompression molding, the 2D glass will be unqualified in size due to the offset of the placement position or uneven molding pressure in the mold, such as the unequal arc height on the left and right sides

[0010] 2. The mold imprint is heavy and the grinding cost is high

[0011] Because both the convex mold and the concave mold are in contact with the glass surface during the forming process, resulting in mold impressions on the convex and concave surfaces, resulting in 35 minutes of grinding for the convex surface of the glass and 55 minutes for the concave surface, which increases the processing cost

[0012] 3. Low mold life and high production cost

[0013] During molding, the molds are pressed and rubbed against each other, resulting in a reduction in the life of the mold surface, and easy-to-fall dust particles adhere to the glass surface, forming pitting and other irreparable defects

[0014] 4. It is difficult to develop new products such as large angles

[0016] 5. Long new product development cycle

[0017] Existing technical solutions: According to the size of 3D glass and thermoforming analysis, reversely deduce the dimension of the expanded 2D glass, then make a mold, perform a forming test, and correct the size of the 2D glass after testing. Generally, it will go through 3-5 repeated corrections. In the process of mold processing, trial molding, and testing, the development cycle is long

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