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Methods and apparatus for initiating scoring

A technology of equipment and mechanical scribing, applied in welding equipment, glass manufacturing equipment, laser welding equipment, etc., can solve problems such as expensive and complex equipment

Inactive Publication Date: 2011-02-02
CORNING INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although such high-speed motion is possible, the equipment required is often complex and expensive

Method used

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  • Methods and apparatus for initiating scoring
  • Methods and apparatus for initiating scoring
  • Methods and apparatus for initiating scoring

Examples

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Embodiment Construction

[0076] As noted above, in an exemplary embodiment, the present invention is directed to an apparatus and method for initiating cracks in a moving glass ribbon using a mechanical scoring device. Mechanical scoring devices can have various configurations and structures now known or later developed. Regardless of configuration, the mechanical scoring apparatus will include a mechanical scoring head that contacts the surface of the glass ribbon and forms the initial crack. A representative structure may include an indentation or scoring wheel made of tungsten carbide or diamond attached to a mechanism such as an air cylinder for maintaining a substantially constant pressure on the glass surface. The scoring force of , regardless of the variation in the position of the surface, for example along the direction perpendicular to the nominal plane of the glass surface.

[0077] Because glass ribbons can be very thin and flexible, for example glass ribbons used to produce substrates fo...

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Abstract

The invention relates to methods and apparatus for initiating scoring. Methods and apparatus are provided for forming an initiation flaw (111) in the surface (114) of a glass sheet or glass ribbon (13). The initiation flaw (111) is used in connection with a laser light beam (121) and a cooling area produced by a cooling nozzle (119) to from a score line (115) in the surface (114) of the sheet or ribbon (13). The initiation flaw (111) is formed by a mechanical scoring head (20) which is carried by moving carriage (14) and which undergoes retrograde motion (19) relative to the carriage (14) so as to increase the time available for forming the initiation flaw (111).

Description

technical field [0001] The present invention relates to methods and apparatus for scoring glass ribbons and sheets, and in particular to methods for mechanically forming incipient cracks (also referred to as "incipient cracks, "incipient cracks") in glass ribbons or glass sheets. or "initial line") methods and apparatus. [0002] The following discussion relates to glass ribbons moving in a vertical direction, which is a typical application of the methods and apparatus disclosed herein. However, this orientation is used for ease of presentation only and should not be construed as limiting the invention in any way. Similarly, the invention is not limited to scoring glass ribbons, but also includes scoring individual glass sheets. Background technique [0003] Scribing of glass has traditionally been accomplished with mechanical tools. However, an alternative exists that uses laser radiation such as CO with a wavelength of 10.6 μm 2 Laser radiation, which heats the glass t...

Claims

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Application Information

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IPC IPC(8): C03B33/09
CPCC03B33/0215C03B33/027C03B33/091C03B33/0235B23K26/0884Y10T83/0333Y10T225/12Y10T225/321
Inventor A·A·阿布拉莫夫G·D·曲奇拉周乃越
Owner CORNING INC
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