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1. (WO2010113979) DEVICE AND METHOD FOR BENDING GLASS SHEET

Pub. No.:    WO/2010/113979    International Application No.:    PCT/JP2010/055763
Publication Date: Fri Oct 08 01:59:59 CEST 2010 International Filing Date: Wed Mar 31 01:59:59 CEST 2010
IPC: C03B 23/023
C03B 35/18
Applicants: ASAHI GLASS COMPANY, LIMITED
旭硝子株式会社
OHTSUBO, Nozomi
大坪 望
Inventors: OHTSUBO, Nozomi
大坪 望
Title: DEVICE AND METHOD FOR BENDING GLASS SHEET
Abstract:
Provided are a device and a method for bending a glass sheet. A glass sheet, which has excellent optical quality and is capable of being molded into a shape that is bent sharply with a large curvature, is bent orthogonally using a molding roller that has been curved. The device comprises a molding roller (20), which forms at least a portion of a roller conveyor (32) for conveying a heated glass sheet (G) and is capable of curving in the direction (Y) orthogonal to the plane of conveyance in order to bend the glass sheet (G) in the direction (Y) orthogonal to the direction of conveyance (X), and a curve forming mechanism (42a) for causing the molding roller (20) to curve at the desired curvature in the orthogonal direction (Y). The curve forming mechanism (42a) has back-up rollers (56) and (58), which are formed from flexible shafts that flexibly extend in a lengthwise direction, and which support the molding roller (20) over the whole lengthwise direction, and these back-up rollers (56) and (58) are caused to curve in order to cause the molding roller (20) to curve at the desired curvature in the orthogonal direction (Y).