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
CN101962262BInactive Publication Date: 2013-03-20CORNING INC
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CORNING INC
Publication Date
2013-03-20
Estimated Expiration
Not applicable · inactive patent

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Abstract

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).
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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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