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

A technology of grinding device and grinding method, applied in grinding device, abrasive surface adjusting device, feeding device, etc., can solve the problems of glass plate breakage, grinding pad damage, bad influence of glass plate, etc., achieve easy maintenance, prevent damage, improve The effect of continuous operation

Active Publication Date: 2016-01-20
ASAHI GLASS CO LTD
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  • 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 manufacturing method of glass plate
  • Grinding device, grinding method, and manufacturing method of glass plate
  • Grinding device, grinding method, and manufacturing method of glass plate

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Embodiment Construction

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

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

[0048] The polishing device 10 is a rectangular glass plate G {for example, one side is 2000×2200mm-2200×2600mm, the thickness is 0.7mm, and it is made of alkali-free glass-based materials for FPD use before polishing. The glass plate (for example, AN100.)} is a polishing device that grinds the flatness required for the glass plate for liquid crystal displays.

[0049] The structure includes: a polishing head 16, holding a glass plate G on the lower surface of the polishing head via a sheet-shaped holding member 14; and a polishing platform 22, holding a polishing p...

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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 and a polishing method for detecting abnormalities such as cracks generated in a glass plate or the like during processing, and a method of manufacturing a glass plate. Background technique [0002] In the glass plate manufacturing process, various processes such as cutting, chamfering, perforating, grinding, heat forming, and air cooling strengthening are performed on the glass plate. For example, a glass plate used for a flat panel display (FPD) such as LCD or OLED is a major factor affecting the image due to minute irregularities or curvatures on the surface, and a part or the entire surface of the glass plate is polished by a polishing device. [0003] In order to perform such polishing, a polishing apparatus is known, which includes: a moving polishing head that holds and conveys a glass plate; and a plurality of polishing platforms arranged below the polishing head. According to this polishing device,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23Q15/00B24B49/10B24B37/04B24B49/18B24B53/00
CPCB24B49/10B24B37/04B24B49/18B24B53/017
Inventor 秋山秀铃木健司齐藤勋关昌雄
Owner ASAHI GLASS CO LTD
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