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Device for bending glass by gravity

A bending and gravity technology, applied in glass forming, glass reshaping, glass manufacturing equipment, etc., can solve problems such as system complexity and achieve the effect of simplifying the bending device

Inactive Publication Date: 2020-11-24
SAINT-GOBAIN GLASS FRANCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The disadvantage of this system is that it requires two different thrusts (vertical and horizontal) to switch from one support to another, which means that two different actuators are required, complicating the system change

Method used

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  • Device for bending glass by gravity
  • Device for bending glass by gravity
  • Device for bending glass by gravity

Examples

Experimental program
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Embodiment Construction

[0030] figure 2 A bending assembly 3 is shown comprising at least a first support 1 and a second support 2 . This assembly 3 is shown in a state corresponding to the first bending stage, that is to say the first support is in an upper position to carry at least one glass sheet horizontally placed thereon. Bending assemblies can be used to bend multiple glass sheets simultaneously. The second support 2 is in the lower position, in the waiting position. This second support 2 is fixed to a frame 4 which supports the assembly and does not move throughout the bending process. Obviously, other supports are conceivable.

[0031] The bending assembly 3 may be run through a furnace, in particular a tunnel furnace, in order to raise the glass to its gravity bending temperature (approximately 600°C). When the glass reaches its bending temperature, the glass begins to bend under its own weight. After obtaining the first intermediate bend, a change in the form of the support is trigge...

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PUM

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Abstract

The invention concerns a device for bending by gravity of at least one sheet of glass supported on at least one first support (1) forming part of a bending assembly (3) supported by a frame (4), different support shapes supporting the sheet during the bending, said device comprising a control system (100) controlling the change of support shape, comprising a movement generator system and a transmission member for transmitting the movement to the bending assembly and controlling the change of shape, said control system acting on a trigger module (200) designed to allow the passage from one shape to another and vice versa.

Description

technical field [0001] The present invention involves gravity bending of glass sheets on several supports. Background technique [0002] Gravity bending of glass sheets is well known. This bending can be done on a simple support of the frame or skeleton type, the geometry of which does not change during bending. However, if the aim is to obtain a specific bend, especially a particularly pronounced bend, it is useful to perform the bend on a support whose geometry changes during the bend. Thus, supports of the articulated skeleton type are known with two lateral members that fold back during bending. There is also known a bending assembly comprising two peripheral supports for the glass sheet and completely replacing each other during the bending process. [0003] It is also known to use two or three gravity-bending supports in succession. Typically, when switching from one support to another, the concavity of the support increases to progressively increase the concavity ...

Claims

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Application Information

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IPC IPC(8): C03B23/027C03B23/025
CPCC03B23/027C03B23/0252
Inventor C·马许拉S·普瓦雷L·克里布夫
Owner SAINT-GOBAIN GLASS FRANCE