Glass cutting method

Abstract

The present invention provides a method for cutting glass and its equipment. Because the laser beam irradiated on the glass to be processed has the front end with low energy density and rear end withhigh energy density, so that the thermal impact produced by irradiation of laser beam or the glass can be intensified, and the interval of said glass is separated, and the movement rate and energy oflaser beam correspondent to the heat stress distribution of every different region can be controlled to raise the quality of glass section and can quickly cut glass.

Description

technical field [0001] The present invention relates to a kind of glass cutting method and device, particularly relate to such a kind of glass cutting method and device, promptly when using laser and coolant to cut glass, make the moving speed and energy of laser beam adjustable, the laser beam The shape is also variable, whereby the cutting speed of the glass and the quality of the glass after cutting can be increased. Background technique [0002] A typical device for cutting glass is a glass cutting device using a laser, which emits an elliptical, U-shaped or V-shaped laser beam, heats the glass surface, and directly sprays a coolant to cut the glass. [0003] Figure 1a The existing glass cutting method utilizing the temperature gradient is to use a laser to heat the glass 2 below the melting temperature, and then spray a coolant 3 to cut the glass. The glass 2' cut according to the glass cutting method is as follows: Figure 1b shown. [0004] Figure 2a The existing...

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Problems solved by technology

However, the thermal stress distribution of the heating on the front section, the central section and the end section of the glass to be cut is not uniform, because the laser beam with a certain energy moves from the front section to the end section of the glass at a certain speed, and at the same time irradiates the glass Heating is performed, so there is a problem that the cut surface of the glass is not uniform, and it is difficult to cut the glass especially at the front end and the end of the glass.

[0011] In addition, when the energy density of the laser beam irradiated to the glass in the front end section and the end section is too high, the cut surface of the glass is damaged due to the rapid heating of the glass surface, and on the contrary, when the energy density of the laser beam is too high, hours, there will be a problem that it takes a long time to cut the glass

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