Method for bending a glass sheet and a bending mould
OwnerEsa Lammi, Petri Lammi +1inventors
InventorsEsa Lammi, Petri Lammi, Kari Vaha-Antila
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Abstract
A method for bending a glass sheet (1) in a glass bending furnace utilizing gravity and a bending mould, whereby the glass sheet is put onto the mould and heated into bending temperature to make the glass bend into a wanted shape by means of the mould. The glass sheet (1) is supported by means of the mould adjustable middle component (6), by means of which bearing impact the glass sheet is supported and its getting down onto mould support (4) regulated and which beating element, when let down, forms a part of the mould.
Claims7
A method for bending a glass sheet (1) in a glass bending furnace utilizing gravity and a bending mould, whereby the glass sheet is put on the mould and heated into bending temperature in order to make the glass bend into a wanted shape by means of the mould, wherein the unbent glass sheet (1) is supported from the glass edges by means of mould supports (4) locating under said glass edges wherein the other mould supports (4) are locating in the final mould position, characterized in that said unbent glass sheet (1) is further supported from the glass (1) sheet middle section by means of mould middle component (6) and that during glass bending said adjustable middle component (6) of said mould is let down in order to get the glass sheet down on the mould supports, and that said middle component (6), let down by the method, forms a part of the final mould.
A bending mould to be placed in a glass bending furnace, said bending mould having a plurality of supporting elements (4) resting on which a glass sheet (1) is meant to sink by gravity into a wanted shape, when said glass sheet has reached its bending temperature, in which mould the unbent glass sheet (1) is supported from the glass edges by means of mould supports (4) locating under said glass edges wherein the other mould supports (4) are locating in the final mould position, characterized in that the mould comprises
- The glass sheet (1) during the whole bending process supporting adjustable middle component (6), for which a path has been arranged in the glass bending direction and which is in the final stage of glass bending let down to its place in order to form a part of the bending mould, and
- Installed in the mould carriage, a mechanism (7,9) carrying out motion for said mould middle component and steered according to information measured either from glass sheet (1) or its impact.
Dependencies are inferred from the claim text.