Method and mould for molding sheet glass

Abstract

The invention relates to a method for molding sheet glass. A plurality of supportint assemblies are arranged between an upper die having a die core and a die cavity and a lower die having a die core and a die cavity, and the molding critical temperature of the supportint assemblies is higher than or equal to the molding critical temperature of sheet glass. When a heated temperature does not reach the molding critical temperature of the supportint assemblies, the self weight of the upper die is supported via the supportint assemblies so that a gap is formed between the upper die and the lower die. When the heated temperature reaches the molding critical temperature of the supportint assemblies, pressure is applied to the upper die, so that the supportint assemblies deform, and the sheet glass is foced by the die cores to deform toward the die cavities so as to be molded into glass products. The invention also relates to a mould. The method for molding sheet glass helps to prevent the sheet glass from cracking due to self-weighting pressing of the upper die, and also helps to allow the sheet glass to deform gradually so that fine curved glass products with thin housings are produced.

Description

technical field [0001] The invention relates to a method for molding thin-plate material glass, in particular to a method for molding thin-plate material glass which can prevent the thin-plate material glass from being crushed by the weight of the upper mold before reaching the critical temperature of plasticity, and a forming mold thereof. Background technique [0002] Generally, curved glass is formed by molding. The traditional glass molding device includes upper and lower molds, and the material glass blank is placed between them. After the upper and lower molds and the material glass blank are heated to the plastic critical temperature, The upper and lower molds pressurize the material glass blank to change its shape. After cooling down, the material glass blank is cooled, and its surface will be formed into the preset shape of the surface of the upper and lower molds. [0003] It is worth noting that when the existing glass molding device is applied to the molding of s...

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Problems solved by technology

[0003] It is worth noting that when the existing glass molding device is applied to the molding of special-shaped thin-shell curved glass, the central area of ​​the thin-plate material glass blank placed on the lower mold will be in a state of a large area in the early stage of mold closing , because the thinner glass blanks cannot bear the weight of the upper mold, so if the upper mold comes into contact with the glass blanks that have not reached the plasticizing temperature, it will easily crush the glass blanks

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