Thermoforming method and thermoforming device for glass product

Patent metadata

Field	Value
Publication number	US-10934203-B2
Application number	US-201816112916-A
Country	US
Kind code	B2
Filing date	Aug 27, 2018
Priority date	Nov 17, 2017
Publication date	Mar 2, 2021
Grant date	Mar 2, 2021

Abstract

The present disclosure provides a thermoforming method and a thermoforming device for a glass product. The method comprises the following steps of: providing a thermoforming mold, wherein the thermoforming mold comprises a lower mold and an upper mold arranged above the lower mold and matched therewith, and providing a mold opening component; a pressurizing process, wherein a glass sheet placed in the thermoforming mold and at a softening point temperature and above is hot-pressed to form a glass product; a cooling process, wherein the glass product placed in the thermoforming mold is cooled, and when the temperature of the glass product drops to a glass point transformation temperature and below, the upper mold is opened by the mold opening component so that the upper mold is separated from the lower mold; and taking the glass product out when the temperature of the glass product in the thermoforming mold drops to a room temperature. The thermoforming method improves the molding quality of the glass product and enhances the manufacturing yield of the glass product.

First claim

What is claimed is:

1. A thermoforming method for a glass product, comprising the following steps of:
providing a thermoforming mold, wherein the thermoforming mold comprises a lower mold and an upper mold arranged above the lower mold and matched therewith; providing a mold opening component; a pressurizing process, wherein a glass sheet placed in the thermoforming mold and at a softening point temperature and above is hot-pressed to form a glass product; a cooling process, wherein the glass product placed in the thermoforming mold is cooled, and when the temperature of the glass product drops to a glass point transformation temperature and below, the upper mold is opened by the mold opening component so that the upper mold is separated from the lower mold; and taking the glass product out when the temperature of the glass product in the thermoforming mold drops to a room temperature;
after the upper mold is opened, moving the lower mold carrying the glass product by a preset distance along a horizontal direction; resetting the upper mold so that the upper mold is dislocatedly supported on the lower mold; and resetting the lower mold; wherein the thermoforming mold is flowed in the thermoforming method in a stepping manner by moving according to a preset stepping distance when stepping between the pressurizing process and cooling process.

2. The thermoforming method according to claim 1 , further comprising:
providing an ejection member, and in the cooling process, after the upper mold is opened, applying an acting force to the glass product by the ejection member so that the glass product and the lower mold are displaced, and the glass product and the glass mold are incompletely separated.

Assignees

• Aac Technologies Pte Ltd

Inventors

• Su Wei
• Xu Bo
• Liu Xuefeng
• He Shaolin

Classifications

• C03B25/06

  with horizontal displacement of the glass products · CPC title

• Y02P40/57

  Improving the yield, e-g- reduction of reject rates · CPC title

• C03B23/0305 Primary

  Press-bending accelerated by applying mechanical forces, e.g. inertia, weights or local forces · CPC title

• C03B23/0307

  Press-bending involving applying local or additional heating, cooling or insulating means · CPC title