Film removing method and film removing device for coated glass

Abstract

The invention relates to a film removing method and film removing device for coated glass. Particularly, scribing film removing is conduced on the coated glass by adopting laser, and the problem that chemical etching pollutes the environment is solved. Meanwhile, due to the fact that the working range of a high-speed galvanometer is limited, the film removing method comprises the steps that the whole piece of coated glass is divided into at least two film removing areas through cooperation of software and a CCD sensor, an image of one film removing area is acquired through the CCD sensor, even positioning points are set, and the software acquires the positioning points on a displacement path in real time; when film removing is conducted on the next film removing area, overlapped film removing is firstly conducted on the part, close to the junction of the two film removing areas, of the precious film removing area, a displacement path of overlapped film removing can be acquired according to the positioning points located on the displacement path in the area subjected to film removing, therefore, a film removing line is more coherent, splicing lines or splicing traces generated at the junction of the two film removing areas are eliminated, and the splicing problem of large-breadth coated glass etching is solved.

Description

technical field [0001] The invention relates to the technical field of coated glass processing, in particular to a film removal method and film removal equipment for coated glass. Background technique [0002] Coated glass is to coat one or more layers of metal, metal oxide or other substances on the surface of the glass or to migrate metal ions into the surface layer of the glass to change the radiation rate, emissivity and absorption rate of the glass to sunlight and heat energy. And transmittance and other properties or endow the glass surface with special properties such as conductivity and self-cleaning, making it a colorless or colored layer of film to form glass products with new functions. [0003] According to the manufacturing process of the coated glass, it can be divided into online coated glass and off-line coated glass. The invention belongs to the field of off-line coated glass. [0004] Among them, the offline low-E coated glass is composed of multi-layer fi...

AI Technical Summary

Problems solved by technology

[0009] The present invention overcomes the deficiencies in the above-mentioned prior art, and provides a film-removing method and film-removing equipment for coated glass that can avoid environmental pollution, have simple procedures, and can realize automatic production. The coated glass is scribed and removed, which solves the problem of chemical etching polluting the environment; at the same time, due to the limited working range of the high-speed galvanometer, the present invention divides the entire coated glass into at least two areas for removing the film through software and a CCD sensor. When removing the film in the next film removal area, first overlap the part of the previous film removal area near the junction of the two film removal areas to make the film removal line more coherent and eliminate the occurrence of The splicing lines or traces of splicing solve the splicing problem of large-format coated glass etching

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