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Method and machine for obtaining asymmetric convex glass sheets

A glass plate and bending machine technology, applied in the direction of glass tempering, glass forming, glass re-forming, etc., can solve the problems of complex forming of curved glass plates and so on

Inactive Publication Date: 2012-06-27
SAINT-GOBAIN GLASS FRANCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the shaping of these curved glass sheets is increasingly complex

Method used

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  • Method and machine for obtaining asymmetric convex glass sheets
  • Method and machine for obtaining asymmetric convex glass sheets
  • Method and machine for obtaining asymmetric convex glass sheets

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0037] exist Figures 1A-1E In each of the Figures, a glass pane 1 is schematically shown cut for a side window of a motor vehicle, the axis of travel of the glass pane on the bending line being indicated by the arrow f.

[0038] According to the invention, the glass sheet 1 that is advanced sequentially before final bending, such as the top and sides of the glass sheet ( Figure 1A ), the bottom and sides of glass plate 1 ( Figure 1B ), both above and below the glass plate 1 and on the same side ( Figure 1C ), the bottom of the glass plate 1 and the entire lateral area of ​​the glass plate 1 ( Figure 1D ), or the upper surface of the glass plate 1 and the entire lateral area of ​​the glass plate 1 ( Figure 1E ) to implement asymmetric blowing of hot air or cold air (indicated by arrow F).

[0039] When the air is blown at a temperature different from that at which the bending is carried out, the concavity is improved as before, not only in the direction of travel, but al...

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PUM

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Abstract

The invention refers to a method and a machine for obtaining asymmetric convex glass sheets. The invention concerns a method which consists in unwinding glass sheets previously softened gradually providing them with the desired convex shape. Between the initial bending phase during which the sheet begins to be shaped and the final phase of said bending process, at a location on the advancing line, air is continuously blown on at least one side of the glass sheets, under conditions capable of influencing asymmetrically the final concavity of the bend-shaped glass sheets compared to what would have resulted from the final bending without said blowing operation. The corresponding bending machine comprises at least one nozzle (3, 3a) for continuously blowing air, arranged at a location along the advancing line the glass sheets and designed to provide asymmetrical air blowing on said sheets (1).

Description

[0001] This application is a divisional application of the invention patent application with the application number 200380101195.9 and the application date of October 8, 2003, and the invention name is "method and machine for producing asymmetrically curved glass plates". technical field [0002] The present invention relates to techniques for obtaining curved and possibly thermally tempered glass sheets bent according to cylindrical shapes or non-cylindrical composite shapes. [0003] More particularly, the present invention relates to glass sheets of those techniques in which the glass sheets are conveyed for sequential travel on at least one forming station consisting of forming bars, for example arranged along a path, on said Consists of rotating elements with curved profiles in the sequential direction of travel of the glass sheets. [0004] The invention is used, for example, to implement automotive glazing, such as side glazing. Background technique [0005] Such ben...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03B23/023C03B23/035C03B23/025C03B27/044C03B35/16
CPCC03B23/0256C03B27/0447C03B27/0408C03B23/0254C03B23/0355C03B35/166C03B27/0404C03B23/035C03B23/025
Inventor J·勒克莱尔J·-L·里丁格G·加尼耶
Owner SAINT-GOBAIN GLASS FRANCE