A ceramic mold for bending and forming glass plates

Abstract

The invention relates to the technical field of glass molding, in particular to equipment for bending of a glass panel, and particularly provides a ceramic die for bending molding of the glass panel.The ceramic die comprises a ceramic terrace die and multiple electric heating elements, the ceramic terrace die is provided with side walls and a bottom wall, the electric heating elements are arranged in the bottom wall, the outer surface of the bottom wall is provided with a convex molded surface, a vacuum cavity is formed in the ceramic terrace die, and negative pressure can be generated in thevacuum cavity; at least one partition vacuum mechanism is further additionally arranged in the vacuum cavity, each partition vacuum mechanism is provided with a partition vacuum cavity, and partitionnegative pressure can be generated in the partition vacuum cavities. The ceramic die can meet the requirement of front windshields with HUD areas, installing areas of rainwater sensors or light sensors or other optical elements and installing areas of cameras bending molding, and can lower the glass molded surface fluctuation, and finally, the glass panel with higher-quality molded surfaces is obtained; moreover, the bending molding quality of peripheral sides with higher molding difficulty can be guaranteed.

Description

Technical field: [0001] The invention relates to the technical field of glass forming, in particular to equipment for bending glass plates, and specifically provides a ceramic mold for bending and forming glass plates. Background technique: [0002] The windshield on the car is a glass product that has been bent and formed. Usually, ordinary flat glass is bent and formed into a specific shape and curvature. It is then bent into the desired shape using a male mold having a convex forming surface that mates with the concave surface of the final formed glass sheet, and a female mold. In the prior art, there are convex molds made of metal materials, for example, patent CN101720308A discloses a glass bending process, which includes providing a positively heated convex mold with a forming surface comprising one or more Holes, the punch material is aluminum or stainless steel, due to the large thermal expansion coefficient of the metal material, the convex molding surface will exp...

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to solve the potential safety hazards caused by thermal expansion and contraction of molds in the prior art, shortened service life, and inability to meet the bending molding of glass plates with higher local surface quality and optical requirements. Shortcomings such as demand, provide a ceramic mold for glass plate bending

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