C - Chemistry – Metallurgy – 03 – B
Patent
C - Chemistry, Metallurgy
03
B
C03B 23/027 (2006.01) C03B 23/03 (2006.01) C03B 23/033 (2006.01) C03B 27/044 (2006.01)
Patent
CA 2170516
Glass sheet bending apparatus (20) including at least one deformable mold (22) has a linkage (26) that extends between mold members (24) and includes connector links (28) fixed to the mold members and having pivotal connec- tions (32) to each other about axes that extend parallel to the glass sheet throughout the bending, and the linkage also has control links (34) that have pivotal connections (36) about axes that extend perpendicular to the glass sheet throughout the bending as well as having universal connections (38) to each other such that the linkage moves the mold members for bending with a constant radius of curvature. The bending apparatus (20) preferably has a pair of the deformable molds (22, 44) that are arranged in lower and upper locations and have respective linkages (26, 48) as well as having the mold members (24, 46) thereof provided with quench openings (66) through which quenching gas is supplied to quench the bent glass sheet for heat strengthening or tempering. An ac- tuating mechanism (154) of the apparatus is constructed so as to move the linkages (26, 48) to perform the bending which may be performed by moving the deformable molds (22, 44) toward each other during the bending.
Machine à courber les vitres (20) comportant au moins un moule déformable (22), un système de liaison (26) qui s'étend entre les éléments de moulage (24) et des liens de raccordement (28) fixés aux éléments de moulage et reliés pivotant (32) entre eux autour d'axes s'étendant parallèlement à la vitre sur toute sa courbure, les liens de raccordement étant également munis de liens de commande (34) reliés pivotant (36) autour d'axes perpendiculaires à la vitre sur toute sa courbure ainsi que des joints à rotule (38) les reliant entre eux de façon à ce que le système de liaison (26) déplace les éléments de moulage pour assurer une courbure à rayon constant. La machine à courber les vitres (20) est de préférence pourvue d'une paire de moules déformables (22, 44) disposés en position haute et basse et dont les systèmes de liaison respectifs (26, 48) ainsi que les éléments de moulage (24, 46) sont pourvus d'orifices (66) d'admission du gaz de trempe qui assure la trempe ou le revenu de la vitre. Un mécanisme de trempe (154) attenant à l'appareil déplace les systèmes de liaison (26, 48) de façon à assurer la courbure qui s'obtient par un déplacement des moules déformables (22, 44) l'un vers l'autre pendant le processus de courbure.
Glasstech Inc.
Smart & Biggar
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