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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 it difficult to adjust the temperature of the glass surface. The problem of control accuracy; also solve the problem that it is difficult to control the cooling rate during annealing and cooling, which leads to the problem that the temperature difference of the formed glass is too large and broken

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

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Effect test

Embodiment 1

[0039] This embodiment provides a glass hot-bending mold, which includes a mold body, and the mold body includes an upper mold 1 and a lower mold 2; the upper mold 1 and the lower mold 2 are closed to form a sealed cavity; the upper mold 1 The side near the lower mold 2 is provided with four depressions 11; the four depressions 11 are arranged symmetrically about the yoz plane; the side of the lower mold 2 close to the upper mold 1 is provided with four protrusions 21; The four raised portions 21 are respectively opposite to the four depressed portions 11; the raised portions 21 of the lower mold 2 are engaged with the depressed portions 11 of the upper mold 1, so that the upper mold 1 and the lower mold 2 After closing the molds, a sealed cavity is formed, and the glass blank 5 is placed in the sealed cavity.

[0040] The upper mold 1 and the lower mold 2 are respectively provided with multiple sets of micro-channels, and nitrogen gas is fed into the micro-channels to elimina...

Embodiment 2

[0048] This implementation provides a method for hot-bending glass using the above-mentioned glass hot-bending mold, which includes the following steps.

[0049] S1. Put the glass blank 5 into the glass hot bending mold, and roughly heat it to the vicinity of the first preset temperature;

[0050] Specifically, put the glass blank to be processed into the corresponding position of the lower mold 2, align the upper mold 1 and the lower mold 2 in the oz direction, then close the upper mold 1 and the lower mold 2, and the upper mold 1. Refer to the position relationship between the lower mold 2 and the glass blank figure 1 As shown; the first preset temperature is set according to the processing conditions, and the entire environment is roughly heated to around the first preset temperature by the heat source.

[0051] When heating the glass blank 5, after the external heat source directly heats the mold body, the heat transfer of the mold body heats the glass blank 5, that is, t...

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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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