Method for reducing loss of hot bending glass die and equipment thereof

Abstract

The invention discloses a method for reducing loss of a hot bending glass die and equipment thereof. The method comprises the following steps: S10) placing glass in a bottom die, and placing an upperdie at an upper part of glass; S20) placing the die in an enclosed space, and displacing air outside the die to protection gas which cannot perform a chemical reaction with the die under high temperature condition; S30) displacing residual air in the die to the protection gas; and S40) pushing the die to a processing station in the processing equipment. Through two-time gas replacing on the die, the gas outside the die and the gas in the die can be respectively replaced to the protection gas, so that corrosion of the die can be prevented during processing, the service life is increased, by dividing two-time displacing, work can be carried out with pertinency, air processing effect is increased, and the cost is reduced.

Description

technical field [0001] The invention relates to the field of hot bending of glass, in particular to the protection of a hot bending mold during the glass hot bending process. Background technique [0002] At present, in the process of producing curved glass for mobile phones, the flat glass is usually placed in a prefabricated graphite mold. After the graphite mold is heated as a whole, the glass reaches the critical melting point and will be deformed according to the prefabricated shape to achieve the predetermined The effect of the curved shape. [0003] However, it is found in actual processing that at high temperature, the graphite mold will react with the oxygen in the air, which will cause damage to the collision in the inner molding cavity of the mold. as attached figure 1 As shown, especially in the feeding process, the glass itself is a plane structure, and the plane is a curved structure in the molding cavity. There is a certain gap between the two, and there is ...

AI Technical Summary

Problems solved by technology

During the heating process, the glass cover forms a similar airtight space above the air, so the oxygen in the air is not easy to escape, and as the temperature rises, it will react in the cavity, and the loss of the mold cavity will be lost. Carbon, which in turn destroys the structure of the graphite mold, resulting in processing deviations in the subsequent glass forming process

[0004] Faced with this situation, the graphite mold can only be replaced frequently to ensure the accuracy of the finished product, but the graphite mold itself is expensive, and the price is even worse after processing, so this aspect has long affected the cost of curved glass

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