Grinding device, grinding method, and method of manufacturing glass sheet

The technology of a grinding device and a grinding method is applied in the direction of a grinding device, an abrasive surface adjustment device, and a manufacturing tool, and can solve problems such as damage to a grinding pad, cracking of a glass plate, and damage to a glass plate, and achieve easy maintenance, prevention of damage, and improvement The effect of continuous operation

Active Publication Date: 2011-11-16
ASAHI GLASS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, during the grinding of the glass plate by the grinding device, the glass plate occasionally breaks
In this case, when the grinding process is continued with the broken glass plate, the grinding pad will be damaged by the broken glass plate.
Then, in the production process, when a plurality of glass plates are sequentially ground and continuous grinding is performed, there is a disadvantage that a subsequent glass plate is adversely affected.

Method used

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  • Grinding device, grinding method, and method of manufacturing glass sheet
  • Grinding device, grinding method, and method of manufacturing glass sheet
  • Grinding device, grinding method, and method of manufacturing glass sheet

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Embodiment Construction

[0046] Hereinafter, preferred embodiments of the polishing apparatus, the polishing method, and the manufacturing method of the glass plate of the present invention will be described with reference to the drawings.

[0047] figure 1 It is a perspective view which shows the grinding|polishing apparatus 10 of embodiment. and, figure 2 It is an enlarged cross-sectional view showing the structure of a main part of the polishing device 10 .

[0048] The grinding device 10 is a glass plate G produced in a rectangular shape (for example, one side is 2000×2200mm to 2200×2600mm, and the thickness is 0.7mm, and it is made of an alkali-free glass material for FPD use before grinding by the float method. The glass plate (for example, AN100.)} grinds into a grinding device for the flatness required by the glass plate for liquid crystal display.

[0049] Its structure includes: a grinding head 16, holding a glass plate G on the lower surface of the grinding head via a sheet-shaped hold...

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Abstract

A grinding device for grinding an object to be ground in such a manner that a grinding tool and the object to be ground are moved while being pressed to each other and the object to be ground is ground by the grinding tool while a grinding liquid is supplied to between the grinding tool and the object to be ground. The grinding device is provided with: an AE sensor mounted to a plate supporting the grinding tool or the object to be ground; an abnormality detecting section for detecting an abnormality during grinding, the detection being performed on the basis of an output signal from the AE sensor outputted when an elastic wave from the object to be ground is detected by the AE sensor; and an alarm means for issuing an alarm when an abnormality of the object to be ground is detected by the abnormality detecting section.

Description

technical field [0001] The present invention relates to a polishing device, a polishing method, and a method for manufacturing a glass plate that detect abnormalities such as cracks that occur in a glass plate during processing, such as a crack. Background technique [0002] In the glass plate manufacturing process, glass plates are subjected to various processes such as cutting, chamfering, drilling, grinding, thermoforming, and air-cooling strengthening. For example, a glass plate used for a flat panel display (FPD) such as an LCD or an OLED has micro unevenness or curvature on the surface that mainly affects an image, and a part or the entire surface of the glass plate is polished by a polishing device. [0003] In order to perform such grinding|polishing, there is known the grinding|polishing apparatus provided with the moving grinding head which holds and conveys a glass plate, and the some grinding|polishing table arrange|positioned under this grinding head. According...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24B49/10B24B37/04B24B49/18B24B53/00
CPCB24B37/04B24B53/017B24B49/10B24B49/18
Inventor 秋山秀铃木健司齐藤勋关昌雄
Owner ASAHI GLASS CO LTD
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