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Glass shaping apparatus

A glass plate, coating technology, applied in the field of forming coated glass plate, glass plate coated with reflective low-emissivity coating, can solve the problem of incorrect geometric shape of products, difficult positioning of heated glass plate, etc. question

Pending Publication Date: 2021-06-01
PILKINGTON AUTOMOTIVE POLAND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Possible deflection of the glass before the bending operation will result in incorrect geometry of the bent product
Difficulty positioning a heated coated glass sheet prior to forming due to the higher temperatures reached by forming

Method used

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  • Glass shaping apparatus

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Embodiment Construction

[0026] A press bending station for bending coated glass sheets according to the invention has: a roller conveyor for coated glass sheets; a mold; , and consists of a fixed wall / support and three movable walls which can move horizontally in an oscillating motion. Preferably, the bending station includes a camera for observing the pressing action, which camera is combined with a control system for moving the movable wall of the frame.

[0027] In a preferred embodiment, the method is based on the use of a frame comprising four separable walls, including three movable walls which can pass through such that the sides of the frame are motion to adjust the position of the coated glass sheet. The frame is capable of correcting the position of the coated glass sheet as it rotates or moves in the furnace. The frame then acts as a lower support for the coated glass sheet which is pressed between the mold and the frame so as to provide the desired shape.

[0028] figure 1 A schematic...

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PUM

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Abstract

The invention relates to a method for shaping a glass sheet having a reflective low emissivity coating thereon comprising the steps: (i) positioning the coated glass sheet at a furnace entrance; (ii) conveying the coated glass sheet through the furnace to heat the glass sheet to a temperature suitable for shaping; (iii) transferring the coated glass sheet on to a first bending tool for supporting the coated glass sheet, the first bending tool having a fixed wall and first, second and third movable walls; (iv) moving at least one of the first, second and third movable walls to adjust the position of the coated glass sheet on the first bending tool ring from a first position to a second position; and (v) shaping the coated glass sheet between the first bending tool and a die. Apparatus for carrying out the method is also disclosed.

Description

technical field [0001] The present invention relates to an apparatus for shaping a glass sheet, in particular to a glass sheet coated with a reflective low-emissivity coating and to a method for shaping the coated glass sheet. Background technique [0002] For the automotive industry, there are many known devices for bending glass sheets. US4282025 discloses an arrangement for conveying glass sheets through a sheet processing station of a furnace. The apparatus includes a carriage having a load carrying frame including longitudinal horizontal members supporting a plurality of panel hangers. The longitudinal horizontal member is rigidly connected to the carriage at its central part and movably connected to the carriage at other parts. [0003] US4104047 discloses a system for supporting self-closing clamps, which are particularly suitable for clamping thin glass sheets (4.5 mm or less) during heat treatment, such as those involved in bending , wherein the glass sheet is su...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03B23/03
CPCC03B23/03C03B2225/02C03B23/0307C03B29/00
Inventor L·迈尔
Owner PILKINGTON AUTOMOTIVE POLAND
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