Glass sheet bending apparatus
First Claim
1. A glass sheet bending apparatus for deep-bending a side of a glass sheet at a processing stage in a heating furnace, which comprises:
- transferring means for transferring to said heating furnace said glass sheet heated to a temperature adapted for processing while keeping a horizontal posture,a mold having a curved surface with which said glass sheet is to be bend-shaped, said mold being arranged at a position corresponding to said processing stage,provisional shaping means for provisionally shaping said glass sheet by closely contact it on a generally curved surface in said mold excluding a deep-bending surface which corresponds to a deep-bent portion in said glass sheet, andblow-bending means for blowing compressed air to said deep-bending surface of the mold to bend part of said glass sheet so as to correspond to said deep-bending surface wherein said blow-bending means comprises at least one movable supporting means movable between an advanced blowing position and a retracted waiting position.
1 Assignment
0 Petitions
Accused Products
Abstract
A glass sheet bending apparatus which includes a transferring mechanism for transferring to the heating furnace a glass sheet heated to a temperature capable of processing while keeping a horizontal posture, a mold having a curved surface with which the glass sheet is to be bend-shaped, the mold being arranged at a position corresponding to the processing stage, a provisional shaping mechanism for provisionally shaping the glass sheet by closely contacting it on a generally curved surface in the mold excluding a deep-bending surface which corresponds to a deep-bent portion in the glass sheet, and a blow-bending device for blowing compressed air to the deep-bending surface of the mold to bend part of the glass sheet so as to correspond to the deep-bending surface.
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Citations
9 Claims
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1. A glass sheet bending apparatus for deep-bending a side of a glass sheet at a processing stage in a heating furnace, which comprises:
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transferring means for transferring to said heating furnace said glass sheet heated to a temperature adapted for processing while keeping a horizontal posture, a mold having a curved surface with which said glass sheet is to be bend-shaped, said mold being arranged at a position corresponding to said processing stage, provisional shaping means for provisionally shaping said glass sheet by closely contact it on a generally curved surface in said mold excluding a deep-bending surface which corresponds to a deep-bent portion in said glass sheet, and blow-bending means for blowing compressed air to said deep-bending surface of the mold to bend part of said glass sheet so as to correspond to said deep-bending surface wherein said blow-bending means comprises at least one movable supporting means movable between an advanced blowing position and a retracted waiting position. - View Dependent Claims (3, 4, 6)
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2. A glass sheet bending apparatus for deep-bending a side of a glass sheet at a processing stage in a heating furnace, which comprises:
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transferring means for transferring to said heating furnace said glass sheet heated to a temperature adopted for processing while keeping a horizontal posture, a mold having a curved surface with which said glass sheet is to be bend-shaped, said mold being arranged at a position corresponding to said processing stage, provisional shaping means for provisionally shaping said glass sheet by closely contacting it on a generally curved surface in said mold excluding a deep-bending surface which corresponds to a deep-bent portion in said glass sheet, and blow-bending means for blowing compressed air to said deep-bending surface of the mold to bend part of said glass sheet so as to correspond to said deep-bending surface wherein said blow-bending means has blowing nozzles and wherein said at least one movable supporting means includes means for holding said blowing nozzles so that the mouth of the nozzles are directed to said mold, and for moving said blowing nozzles between an advanced blowing position and a retracted waiting position, depending on an operating position of said mold. - View Dependent Claims (5)
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7. A glass sheet bending apparatus for deep-bending a side of a glass sheet at a processing stage in a heating furnace, which comprises:
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transferring means for transferring to said heating furnace said glass sheet heated to a temperature capable of processing while keeping a horizontal posture, a mold having a curved surface with which said glass sheet is to be bend-shaped, said mold being arranged at a position corresponding to said processing stage, provisional shaped means for provisionally shaping said glass sheet by closely contacting it on a generally curved surface in said mold excluding a deep-bending surface which corresponds to a deep-bent portion in said glass sheet, blow-bending means for blowing compressed air to said deep-bending surface of the mold to bend part of said glass sheet so as to correspond to said deep-bending surface, and press-bending means which is operated after bending operation by said blow-bending means is finished for pressing a side portion of said glass sheet so as to correspond to said deep-bending surface in said mold. - View Dependent Claims (8, 9)
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Specification