Glass heating graphite mold and production method thereof

Abstract

The invention discloses a glass heating graphite mold and a production method thereof. The mold comprises a front mold and a rear mold, wherein the front mold comprises a front mold base and a front mold core made of a graphite material; the rear mold comprises a rear mold base and a rear mold core made of the graphite material; a cavity matched with the front mold core is formed in the front mold base; the front mold core is arranged in the cavity of the front mold base; a cavity matched with the rear mold core is formed in the rear mold base; the rear mold core is arranged in the cavity of the rear mold base; intermediate areas of opposite surfaces of the front mold core and the rear mold core are three dimensional curved surfaces suitable for processing to obtain hot bending glass during mold closing; edge areas of the opposite surfaces of the front mold core and the rear mold core are respectively provided with a plurality of supporting insert via holes; supporting inserts are arranged in the supporting insert via holes; when the mold is closed, the supporting inserts, which are oppositely arranged, on the front mold core and the rear mold core, make contact with one another, so that the effects of positioning and supporting the mold cores are realized, and the pressures of the mold cores are borne. According to the glass heating graphite mold disclosed by the invention, large-scale mass production is easily realized while the molding quality of the graphite mold is improved.

Description

technical field [0001] The invention relates to a glass heating graphite mold and a manufacturing method thereof. Background technique [0002] With the demand for 3C electronic products such as mobile phones, wearable products, and mobile electronics to become thinner, more fashionable, and more practical, more and more existing electronic product shells use glass materials, and mobile phones, wearable products, and mobile electronics And other product shapes are increasingly using 3D curved glass screens or backplanes with complex shapes such as gradients, curved surfaces, and 3D special-shaped curved surfaces. [0003] The 2D curved or 3D curved glass used in 3C mobile electronic devices is generally realized by the technology of glass heated at high temperature and then bent, which has been widely used in the production of curved screens of various 3C electronic products. At the same time, due to the excellent high thermal conductivity, high temperature resistance, low ...

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Problems solved by technology

[0004] However, during the production of curved glass by heating graphite at high temperature, the surface of graphite mold is easily oxidized, producing carbon dioxide and carbon monoxide, so that the size of the mold will gradually decrease during continuous use, resulting in poor size of curved glass and damage to the surface of curved glass and cause mold damage

[0005] Because glass hot bending belongs to the secondary processing of flat glass, the molding process of glass high temperature hot bending and the controllability and precision of hot bending molds are limited, resulting in low precision of 3D curved glass, which cannot meet the plastic molds required by 3C electronic products. Internal integral molding requirements, and because of precision problems, generally only one mold and one cavity can be achieved, and the molding cycle is long, resulting in high production cost and high cost

[0006] And because the tensile, bending resistance, and elasticity properties of graphite materials are far lower than those of metal steel, graphite molds are more easily damaged and difficult to maintain than conventional metal molds, with low service life and high production costs.

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