Mold, and apparatus for forming glass product, and method of processing glass product

Patent metadata

Field	Value
Publication number	US-11401190-B2
Application number	US-202016810877-A
Country	US
Kind code	B2
Filing date	Mar 6, 2020
Priority date	Jan 9, 2020
Publication date	Aug 2, 2022
Grant date	Aug 2, 2022

Abstract

A mold includes a mold component, a plurality of ejector pins and a stop block. The mold component has a molding surface for forming a glass product and a bottom surface disposed opposite to the molding surface. The mold component defines a plurality of passing through holes through the molding surface and the bottom surface. Each ejector pin passes movably through one corresponding through hole and is configured to separate the glass product from the mold component. The stop block for forming a stop on the ejector pins disposed on one side of the bottom surface. Separates the glass product from the mold component before the glass product is completely cooled down by using the combination of the ejector pins together with the stop block, which can make the cooling of the glass product more uniform.

First claim

The invention claimed is:

1. A glass product forming apparatus comprising:
a mold comprising:
a mold component having:
a molding surface for forming a glass product;
a bottom surface disposed opposite to the molding surface; and
a plurality of through holes passing through the molding surface and the bottom surface;

a plurality of ejector pins configured to separate the glass product from the mold component, the plurality of ejector pins disengaged and hanging loosely in the plurality of through holes respectively;
a stop block for forming a stop on the plurality of ejector pins disposed on one side of the bottom surface; and

a driving mechanism configured to drive the mold component to move toward or away from the stop block, wherein
each ejector pin comprises a first portion, a second portion and a third portion connected to the first portion through the second portion; a diameter of the second portion is greater than that of the third portion, the diameter of the second portion is greater than that of the first portion; each through hole comprises a first hole extending from the molding surface toward the bottom surface, a second hole extending from the first hole toward the bottom surface and a third hole extending from the second hole toward the bottom surface; the first portion corresponds to the first hole, the second portion corresponds to the second hole, the third portion corresponds to the third hole.

2. The glass product forming apparatus of claim 1 , wherein the mold component further comprises a mold core and a mold insert disposed on one side of the mold core away from the stop block; the molding surface is defined on one side of the surface of the mold insert away from the mold core, the bottom surface is defined on one side of the surface of the mold core away from the mold insert; the second hole and the third hole are defined on the mold core and the second hole is connected to the third hole to pass through the mold core, and the first hole is defined on the mold insert.

3. The glass product forming apparatus of claim 1 , wherein the molding surface comprises a molding area and a blank area surrounding the molding area, and the plurality of through holes are spaced and surround the edges of the molding area.

4. A method of processing a glass product, comprising:
providing a glass product forming apparatus of claim 1 and a glass substrate;
placing the glass substrate in the mold to form a glass product;
when a temperature of the glass product drops to a glass transition temperature, the ejector pins protrude from the molding surface and push the glass product away from the mold; and
cooling the glass product.

5. The method of claim 4 , wherein after the step of cooling the glass product, the method further comprises a step of moving the mold component away from the stop block through the driving mechanism; an end of the each ejector pin far from the stop block is retracted into the mold component.

6. The method of claim 4 , wherein the mold component further comprises a mold core and a mold insert disposed on one side of the mold core away from the stop block; the molding surface is defined on one side of the surface of the mold insert away from the mold core, the bottom surface is defined on one side of the surface of the mold core away from the mold insert; the second hole and the third hole are defined on the mold core and the second hole is connected to the third hole to pass through the mold core, and the first hole is defined on the mold insert.

7. The method of claim 4 , wherein the molding surface comprises a molding area and a blank area surrounding the molding area, and the plurality of through holes are spaced and surround the edges of the molding area.

Assignees

• Aac Optics Solutions Pte Ltd

Inventors

• Sobol Michal
• Tang Tsz Lok Keith
• Aabo Thomas
• Kjær Jacob Kibsgaard
• Nielsen Peter Krohne
• Jensen Simon Bo
• Holme Niels Christian Roemer
• Zhu Bingke

Classifications

• C03B2215/46

  Lenses, e.g. bi-convex · CPC title

• C03B2215/68

  Means for parting the die from the pressed glass other than by cooling or use of a take-out · CPC title

• C03B40/00 Primary

  Preventing adhesion between glass and glass or between glass and the means used to shape it {, hold it or support it} · CPC title

• C03B2215/50

  Structural details of the press-mould assembly · CPC title

• C03B11/08 Primary

  for making solid articles, e.g. lenses · CPC title