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Method for bending a glass sheet and apparatus therefor

A glass plate and bending technology, applied in glass manufacturing equipment, glass transportation equipment, glass forming, etc., can solve the problems of long time, shortened glass plate production time, impossible to increase productivity, etc., to prevent and improve the initial bending shape productivity effect

Inactive Publication Date: 2012-04-25
ASAHI GLASS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, it is impossible to shorten the production time of each glass plate and thus increase the production rate since the time that each glass plate occupies the press ring is so long

Method used

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  • Method for bending a glass sheet and apparatus therefor
  • Method for bending a glass sheet and apparatus therefor
  • Method for bending a glass sheet and apparatus therefor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0035] Now, preferred embodiments of the method and apparatus for bending glass according to the present invention will be described in detail with reference to the accompanying drawings.

[0036] exist figure 1 and 2 shows an apparatus 10 for bending a glass sheet according to the first embodiment, which is configured to include a heating furnace 12, a positioning zone 14, a bending furnace in sequence from the upstream side to the downstream side in the direction of conveying the glass sheet G 16. Air cooling and tempering zone 18 and discharge roller conveyor 20. The controller 11 centrally controls the operation time, heater temperature, etc. in each process.

[0037] Furnace 12 is an electrically heated furnace and is divided into zones, (positioning zone 14 and bending furnace 16 are similar electrically heated furnaces). Each electrically heated furnace has a top heater 22a, a bottom heater 22b, and a side heater 22c. For some areas, heaters are not shown for simplici...

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PUM

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Abstract

There are a preliminarily bending step for putting heated and softened glass sheet on a preliminarily bending supporting-frame, the glass sheet having an edge portion supported by the preliminarily bending supporting-frame, and for bending the glass sheet into a desired preliminarily bent shape while putting the glass sheet on the preliminarily bending supporting-frame; and a finally bending stepfor transferring the preliminarily bent glass sheet on a finally bending supporting-frame, the glass sheet having an edge portion supported by the finally bending supporting-frame, and for bending the glass sheet into a final bent shape by pressing the glass sheet against a bending surface of a finally bending mold while putting the glass sheet on the finally bending supporting-frame.

Description

technical field [0001] The present invention relates to methods and apparatus for bending glass sheets, and more particularly to glass sheet bending methods and apparatus for bending a glass sheet into a desired combination of curved surfaces by heating the glass sheet to a temperature near the softening point. Background technique [0002] Driven by changes in design, modern automotive glazing is required to have a variety of shapes and curvatures. In particular, the rear windshield requires a combination of several curved surfaces having a complex shape or a deeply curved shape, such as a vertical cross-section roughly in the shape of the letter J or roughly in the shape of the letter S, and the glass pane has a large amount of deformation and has a curvature limited to a Part of the area is deformed. [0003] The method of bending a glass sheet by pressing the glass sheet in a heating furnace is one of the methods of producing a curved glass sheet, and since the glass sh...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03B23/023C03B23/03C03B23/025C03B23/027C03B23/035C03B35/14C03B35/20
CPCC03B2225/02C03B23/0357C03B35/145C03B23/0305C03B35/202C03B23/03Y02P40/57
Inventor 堀顺士深见正生依田和成北岛丰
Owner ASAHI GLASS CO LTD
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