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Improved glazing inspection system

A technology for inspection systems and glass substrates, applied in the field of inspection systems, can solve problems such as imperfect cleaning and sensitivity to pollutants, and achieve improved inspection results

Inactive Publication Date: 2019-08-27
SAINT-GOBAIN GLASS FRANCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, these inspection systems have the disadvantage of being sensitive to contaminants that can be removed: dust, fibers or marks visible in the image (most commonly the digital image captured by the system)
[0005] In fact, the cleaning is not perfect, and the contamination (dust or other cleanable elements) remains after the cleaning device intervenes
This dust may be interpreted as a defect by the visual inspection device, resulting in a rejection of the glass substrate

Method used

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Embodiment Construction

[0033] in figure 2 An inspection system 100 for inspecting a substrate S according to the present invention is shown in FIG. The substrate S is, for example, a wide glass substrate, such as a flat glass plate with a “mega” size (6 m×3.21 m) from the float glass process. Of course, the inspection system for inspecting the substrate S according to the present invention can be applied to substrates of different sizes. The substrate is inspected before processing.

[0034] The inspection system 100 includes a transport tool 102 for transporting the glass substrate S. Such a transfer tool 102 may take the form of two parallel rails on which a chassis is arranged, and the chassis is provided with supports for glass substrates. The transfer tool 102 may also take the form of two parallel rails on which are mounted wheels that enable the substrate to move. Then some wheels are connected to the motor to enable the base plate to be driven.

[0035] The inspection system 100 includes a c...

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Abstract

The present invention relates to a system for inspecting (100) a glass substrate (S), comprising conveying means (102) for moving said glass substrate, a cleaning device (104) arranged to clean one orboth faces of the glass substrate, and a first visual control device (103a) which is located downstream of the cleaning device in relation to the direction of travel of the substrate, said first visual control device comprising an optical sensor (1030) arranged to take a post-washing image (IP2) of the cleaned surface or surfaces of the glass substrate, characterized in that said inspection system further comprises a second visual inspection device (103b) located upstream of the cleaning device in relation to the direction of travel of the substrate.

Description

Technical field [0001] The invention relates to the field of inspection systems for inspecting glass substrates. Background technique [0002] At present, the quality control of glass substrates requires automatic inspection to check whether the substrates have glass manufacturing defects and defects related to various industrial processes. Use as can figure 1 See the inspection system to perform this inspection. Currently, these inspection systems 1 include a conveyor system 2 that transports the glass substrate S, such as a conveyor belt or a plurality of rollers on which the substrate moves. [0003] A cleaning device 3 is arranged on this conveying line. This cleaning device is used to remove dust using one or more ionized or non-ionized air knives and / or electrostatic or non-electrostatic brushes. The cleaning device is followed by the industrial vision device 4. Such devices include optical sensors, such as high-resolution cameras capable of detecting defects. [0004] How...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/896
CPCG01N21/896
Inventor T.里巴奇克P.法约勒E.加尼翁L.勒默
Owner SAINT-GOBAIN GLASS FRANCE
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