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System for inspecting light transmitting board-like material

A technology for inspecting systems and plates, applied in the direction of material analysis, measuring devices, instruments, etc. through optical means, can solve problems such as residues

Inactive Publication Date: 2013-10-02
ASAHI GLASS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] In addition, there are cases where a part of the part that should be ground by the chamfering grindstone remains without being ground.

Method used

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  • System for inspecting light transmitting board-like material
  • System for inspecting light transmitting board-like material
  • System for inspecting light transmitting board-like material

Examples

Experimental program
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Embodiment Construction

[0068]The translucent plate-shaped object inspection system of the present invention is applied to the inspection of the end portion of a plate-shaped object (translucent plate-shaped object) that transmits light. In the examples shown below, the case where the translucent plate-shaped object is a glass plate is taken as an example, and for the sake of ease of description, the translucent plate-shaped object inspection system is referred to as the glass plate inspection system. However, the light-transmitting plate inspection system of the present invention is also applicable to inspection of the ends of light-transmitting plates other than glass plates.

[0069] Moreover, a glass plate is cut|disconnected (that is, cut|disconnected) from the glass ribbon formed from the molten glass raw material, for example. In addition, after chamfering the end portion with a chamfering grindstone, the main surface is ground and packaged.

[0070] figure 1 It is a perspective view which ...

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PUM

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Abstract

Provided is a system for inspecting light transmitting board-like material, wherein the width of a region where a camera is disposed can be reduced, and images that reflect a chamfer width and a defect size more accurately can be photographed. A first light transmitting photographing camera (11a) is disposed so as to photograph an edge portion of a glass plate (20) from above, along an axis (42) formed by tilting a perpendicular line (41) on the upper surface of the glass plate (20) by a predetermined angle (Theta) to the side surface of the glass plate (20). Furthermore, a second light transmitting photographing camera (11b) is disposed so as to photograph the edge portion of the glass plate (20) from below along an axis (44) formed by tilting a perpendicular line (43) on the lower surface of the glass plate by a predetermined angle (Theta) to the side surface of the glass plate (20). When WS1 represents a value specified as the upper limit of the absolute value of a difference between the upper surface chamfer width and the lower surface chamfer width of the glass plate (20), and D represents the thickness of the glass plate, the angle (Theta) is tan-1(WS1 / D) to 15 DEG.

Description

technical field [0001] The present invention relates to a light-transmitting plate inspection system, and more particularly to a light-transmitting plate inspection system for inspecting an end portion of a light-transmitting plate such as a glass plate. Background technique [0002] In the cutting / chamfering process of a glass plate, after cutting a glass plate into a predetermined shape, the edge part of a glass plate is chamfered. Specifically, chamfering is performed by grinding the end portion of the glass plate with a chamfering grindstone. Conventionally, the end of the glass plate after the chamfering process has been inspected directly by visual inspection. Or, the edge part of a glass plate is imaged from the side direction of a glass plate, and it inspects using this imaged image. In this imaging, light is irradiated to the edge part of a glass plate, and the reflected light is made to enter a camera, and the edge part of a glass plate is imaged. Hereinafter, t...

Claims

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Application Information

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IPC IPC(8): G01N21/896
CPCG01N21/896
Inventor 高田淳金子静则村上达也有田祐介
Owner ASAHI GLASS CO LTD