Cutting method and cutting system for improving cutting quality of tempered glass

Abstract

The invention belongs to the technical field of laser cutting, and particularly relates to a cutting method and a cutting system for improving cutting quality of tempered glass, and the cutting method comprises the following steps: attaching a layer of PE self-adhesive film on one surface of the glass; outputting a corresponding Bessel beam towards the other side of the glass, and enabling the Bessel beam to move according to a set path to cut the glass. According to the invention, the PE self-adhesive film is attached to one side of the glass, and the side, not attached with the PE self-adhesive film, of the glass is cut, so the problem of disordered breaking in the glass cutting process can be solved, the cutting quality can be improved, a process window can be enlarged, and the stability can be improved; the glass and the PE self-adhesive film can be tightly attached by attaching the PE self-adhesive film, so the sample is fixed after cutting is completed, and random flying caused by automatic cracking due to stress release is avoided; meanwhile, the cutting quality and consistency of glass can be improved, and the edge breakage is smaller than 10 microns.

Description

technical field [0001] The invention belongs to the technical field of laser cutting, and in particular relates to a cutting method and a cutting system for improving the cutting quality of strengthened glass. Background technique [0002] Chemically strengthened glass is a special kind of glass that replaces the smaller sodium ions on the glass surface with larger potassium ions through an ion exchange process, forming a compressive stress layer with a depth of tens of microns on the glass surface. Compared with ordinary glass, chemically strengthened glass has higher mechanical strength and thermal stability, and is widely used in the display screens of electronic devices such as mobile phones and tablet computers. [0003] Laser cutting technology is a precision processing technology with no contact, little thermal damage, and flexible processing, and it is the best choice for processing transparent materials. Nowadays, more and more glass cutting adopts the processing m...

AI Technical Summary

Problems solved by technology

However, when the laser pulse acts on the strengthened glass to cover the entire thickness, the surface will be damaged and the stress balance will be broken, and the strengthened glass will easily crack or even break along the cutting line.

Therefore, in the process of producing strengthened glass of various shapes and sizes, the cutting and separation process must be completed before the chemical strengthening step, which leads to cumbersome processing, low efficiency and poor flexibility

When cutting strengthened glass, the process quality is often inconsistent and the process window is narrow

Images