Glass hot bending mold and glass hot bending method

A mold and glass technology, applied in the field of glass hot bending molds and glass hot bending, can solve the problems of difficulty in adjusting the temperature control accuracy of the glass surface, significant temperature gradient of the glass blank, and excessive temperature difference of the formed glass, so as to avoid excessive temperature gradients. Large, eliminate temperature gradient, reduce the effect of water ripples

Pending Publication Date: 2022-03-22
GUANGDONG HUST IND TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main technical problem to be solved by the invention is that the glass blank has a significant temperature gradient due to the uneven heat transfer of the mold during the hot bending process; in addition, the invention also solves the problem of external heating of the mold, which makes

Method used

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  • Glass hot bending mold and glass hot bending method
  • Glass hot bending mold and glass hot bending method
  • Glass hot bending mold and glass hot bending method

Examples

Experimental program
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Effect test

Example Embodiment

[0038] Example 1

[0039] This embodiment provides a glass hot bending mold including a mold body, the mold body comprising a mold 1 and a lower mold 2; the upper mold 1 and the lower mold 2 form a sealing chamber after molding; the upper mold 1 Four recess portions 11 are provided in one side of the lower mold 2; four of the depressed portions 11 have four bumps 21 adjacent to YOZ; the lower mold 2 is adjacent to the side of the upper mold 1. The four of the projections 21 are opposed to the four of the recess 11; the projection 21 of the lower mold 2 is attached to the recess 11 of the upper mold 1, thereby upper mold 1 and down molds. 2 After the mold is formed, the sealing chamber is formed, and the glass embryo 5 is placed in a sealed chamber.

[0040] The upper mold 1, the lower mold 2 respectively provided a plurality of micro-track, and the micro-flow passing into nitrogen can eliminate the temperature gradient of the glass embryo 5 or the molded glass. Specifically, the m...

Example Embodiment

[0047] Example 2

[0048] The present invention provides a method using the above-described glass hot bending mold, including the following steps.

[0049] S1, put the glass embryo 5 into the glass hot bending mold, and heat to the first preset temperature;

[0050] Specifically, the glass blank to be bendered is placed in the respective position of the lower mold 2, and the upper mold 1 and the lower mold 2 are aligned in the OZ direction, and then the upper mold 1 and the lower mold 2 are molded, and the mold 1. Reference to the position of the lower mold 2 and the glass rubber embryo figure 1 The first preset temperature is set according to the processing conditions, and the entire environment is thick to the vicinity of the first preset temperature by the heat source.

[0051] When the glass embryry 5 is heated, the external heat source is directly heated to the mold body, the mold body heat transfer heats the glass embryo 5, that is, the external heat source is indirectly hea...

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PUM

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Abstract

The invention belongs to the technical field of glass processing molds, and particularly relates to a glass hot bending mold and a glass hot bending method. The glass hot bending mold comprises a mold body, and the mold body comprises an upper mold and a lower mold; the upper mold and the lower mold are closed to form a sealing cavity; the upper mold and the lower mold respectively comprise a plurality of groups of mutually independent temperature control assemblies; the temperature control assembly comprises an air supply device and a micro-channel arranged in the upper mold or the lower mold; and the gas supply device is connected with the micro-channel and is used for supplying gas for adjusting the temperature into the micro-channel. The glass hot bending mold provided by the invention can eliminate the temperature gradient of the glass blank due to non-uniform heat transfer of the mold in the hot bending process.

Description

technical field [0001] The invention belongs to the technical field of glass processing molds, and in particular relates to a glass hot bending mold and a glass hot bending method. Background technique [0002] Glass has been widely used in electronic terminal equipment such as 3C industry due to its unique optical properties, thermal stability and mechanical properties. Curved glass is a design structure that has great potential to replace traditional flat glass as display substrates and equipment casings. It has a good visual effect and has become one of the important means of differentiated innovation of electronic equipment. [0003] The processing technology of curved glass is usually through glass hot bending molding technology, put the flat glass blank of predetermined size into the pre-forming mold, heat the mold to the transition temperature, and then apply pressure on the outer surface of the mold to bend the flat glass blank. The processing process of copying the...

Claims

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Application Information

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IPC IPC(8): C03B23/03C03B25/00
CPCC03B23/0302C03B23/0307C03B25/00Y02P40/57
Inventor 张国军张臻明五一尹玲廖敦明赵建州倪明堂
Owner GUANGDONG HUST IND TECH RES INST
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