Mobile phone curved glass hot bending composite die with temperature regulation function and control method

Abstract

The invention discloses a mobile phone curved glass hot bending composite die with a temperature regulation function and a control method thereof. The mobile phone curved glass hot bending composite die comprises a compression die and a bottom die, wherein a cavity is formed in the bottom die; grooves are respectively formed in two sides of the compression die; bosses meshed with the grooves are arranged at two sides of the bottom die; edges of the grooves and the bosses are in the same curved surface; a compression die curved surface is arranged at the center of the compression die; a cavitycurved surface is arranged in the cavity; the compression die curved surface and the cavity curved surface are curved surfaces with the same curvature; when the compression die is in pressing with the bottom die, the bosses are inserted in the grooves, the surfaces of the bosses are in fit with the surfaces of the grooves, the compression curved surface is pressed towards the cavity curved surface, a zone, which faces towards the cavity curved surface, in the bottom die and a zone, which faces towards the compression die curved surface, in the compression die are respectively provided with ametal heating tube, and the metal heating tubes are connected with a temperature controller after being connected with a power supply through guide lines. According to the mobile phone curved glass hot bending composite die disclosed by the invention, the bending accuracy of glass is increased, the consistency during bending of the glass is ensured, and the quality of a product is increased.

Description

technical field [0001] The invention belongs to the technical field of moulds, in particular to a mobile phone curved surface glass hot-bending composite mold with temperature regulation and a control method. Background technique [0002] Nowadays, mobile phones with curved screens are more and more popular. Most of the external screens of mobile phones with curved screens are 2.5D and 3D curved glass. The usable area of ​​the phone screen. The mold of the curved screen mobile phone glass is mainly a bottom mold and a pressing mold. The bottom mold is concave, and the pressing mold has a boss. When the bottom mold and the pressing mold are engaged, there is just a gap of the thickness of the mobile phone screen, which is about 3mm. . The flat glass is placed in the groove of the bottom film. The glass is slightly larger than the width of the groove just enough to keep the glass from falling. When the glass is bent, it is heated to soften the glass. The pressing mold is in ...

AI Technical Summary

Problems solved by technology

The current glass hot bending mold mainly has the following defects: 1. The bottom mold and the press mold cannot be aligned accurately, and the press mold is prone to offset when it is pressurized, the positioning accuracy is poor, and the offset cannot be corrected during the heating process Adjustment, resulting in poor bending accuracy of the phone glass

2. The detected temperature is the temperature of the heating plate, not the internal temperature of the die, and the measured temperature is not accurate

3. When the temperature in the cavity does not match the design temperature, it is difficult to accurately control the temperature of the glass in the cavity through the heating of the external heating plate, making the heating efficiency low, not energy-saving and environmentally friendly

4. Use the groove of the lower template to directly bend the flat glass, resulting in a large bending stress on the edge of the glass, which is prone to cracks and bubbles

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