Compression molding device and process of multi-curved-surface inorganic glass

Abstract

The invention relates to a compression molding device and process of multi curved surface inorganic glass. The compression molding device comprises a heating box, a molding box and a heating device, wherein the heating box and the molding box are arranged adjacently and are isolated by an inner door; the molding box is internally provided with a molding mold and a mold carrier; the mold carrier can move forwards and backwards between the molding box and the heating box; the molding mold comprises a female mold arranged on the mold carrier, a male mold movably arranged on the molding box, and a male mold driving device which is used for driving the male mode to stamp relative to the female mold; the compression molding device further comprises a control box; the control box is internally provided with a molding control module which is used for controlling the molding mold to do molding action, a mold moving control mold which is used for controlling the movement and the positioning of the mold carrier, and a temperature control module which is used for controlling the internal temperature of the molding box and the heating box. The compression molding device is applicable for multi curved surface molding of inorganic glass; the curvature precision of the multi curved surface inorganic glass after being molded can be improved; and moreover a proper bending temperature of the inorganic glass and the optical property and the quality of the surface of the glass after being bent and transformed can be ensured.

Description

technical field [0001] The embodiment of the present invention relates to a glass forming equipment and its process, especially a molding equipment and its process of multi-curved inorganic glass applied in the fields of display devices, aircraft windshields or high-speed train windshields. Background technique [0002] The traditional glass hot-bending forming technology mainly heats and softens the glass, then puts the glass in the forming mold, uses radiation to reheat to a certain temperature, and makes the hot glass fit the forming mold by the glass's own weight or additional external force. Method, during the glass bending process, it is necessary to continue to heat the glass to keep it in a suitable bending temperature range (580-750°C). Since the softening critical temperature of the glass is about 580°C, in order to obtain a deep curved glass, it is necessary to make the glass reach Higher temperature (generally greater than 580°C) or increased bending time, howeve...

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Problems solved by technology

[0002] The traditional glass hot-bending forming technology mainly heats and softens the glass, then puts the glass in the forming mold, uses radiation to reheat to a certain temperature, and makes the hot glass fit the forming mold by the glass's own weight or additional external force. Method, during the glass bending process, it is necessary to continue to heat the glass to keep it in a suitable bending temperature range (580-750°C). Since the softening critical temperature of the glass is about 580°C, in order to obtain a deep curved glass, it is necessary to make the glass reach Higher temperature (generally greater than 580°C) or increased bending time, however, these two methods are detrimental to the surface optical properties of the glass. Higher temperature or longer bending time will increase the glass surface marks formed during processing Defects, and it is suitable for forming single-curved glass. For simple multi-curved glass, it needs to be formed twice or more times. It cannot form complex-shaped multi-curved glass at one time, and it cannot be accurately bent into the desired shape. Curvature accuracy poor

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