Method and machine for the production of convex glass sheets
AssigneeSaint-Gobain Glass France
InventorsJacques Leclercq, Gilles Garnier
Life of this patent
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Abstract
A method and machine for obtaining bent glass sheets. Glass sheets are brought to their softening temperature, then they are caused to travel over a shaping bed of advancing elements for advancing them which are arranged along a path having a circular arc-shaped profile, the sheets progressively assuming their shape on entering the bed and over a first shaping zone, then being hardened by tempering or cooling in a second zone of the bed until they leave, and then the bent glass sheets thus obtained are recovered. The shaping bed is produced with a profile extending in a circular arc of more than 90°, and, on leaving the shaping bed, the hardened glass sheets are moved in a direction opposite that in which they were fed in.
Claims15
A machine for bending glass sheets comprising:
- means for causing glass sheets that have been brought to their softening temperature beforehand to travel over a shaping bed of advancing elements for advancing the glass sheets, which advancing elements are arranged along a path having a circular arc-shaped profile, wherein the shaping bed extends over a circular arc of more than 90°;
- and
- means for taking over the bent glass sheets, on leaving the shaping bed, in a direction opposite that in which the glass sheets were fed in,
- wherein a plurality of blow-boxes are disposed along at least a portion of the circular arc, and the portion extends over more than 90° of the circular arc.
A machine for bending glass sheets comprising:
- a conveyor that causes glass sheets that have been brought to their softening temperature beforehand to travel over a shaping bed of advancing elements that advance the glass sheets which advancing elements arranged along a path having a circular arc-shaped profile, wherein the shaping bed extends over a circular arc of more than 90°;
- and
- a roller than turns over the bent glass sheets, on leaving the shaping bed, in a direction opposite that in which the glass sheets were fed in,
- wherein a plurality of blow-boxes are disposed along at least a portion of the circular arc, and the portion extends over more than 90° of the circular arc.
A machine for bending glass sheets comprising:
- means for causing glass sheets that have been brought to their softening temperature beforehand to travel over a shaping bed of advancing elements for advancing the glass sheets, which advancing elements are arranged along a path having a circular arc-shaped profile, wherein the shaping bed extends over a circular arc of more than 90°;
- and
- means for taking over the bent glass sheets, upon leaving the shaping bed, in a direction opposite that in which the glass sheets were fed in,
- wherein the means for taking over the glass sheets comprises means for overturning the glass sheets before they are recovered on a conveyor belt such that the glass sheets are upside down relative to their position upon leaving the shaping bed.
A machine for bending glass sheets comprising:
- a conveyor that causes glass sheets that have been brought to their softening temperature beforehand to travel over a shaping bed of advancing elements that advance the glass sheets, which advancing elements are arranged along a path having a circular arc-shaped profile, wherein the shaping bed extends over a circular arc of more than 90°;
- and
- a roller that turns over the bent glass sheets, upon leaving the shaping bed, such that the glass sheets are upside down relative to their position upon leaving the shaping bed.
Dependencies are inferred from the claim text.