Glass laser engraving method and device

Abstract

The invention discloses a glass laser engraving method and device. Two-dimension matrix zoning engraving, pixel point dynamic fusing and other methods are adopted, so the spicing problem of large-area pattern engraving is solved, pixel points can be arrayed more regularly, splicing edges of patterns are further fused, and uniformity and integrality of graved patterns are improved. Meanwhile, mechanical measurement and a dynamic compensation algorithm are adopted to solve the problem that large-area planar glass is uneven in thickness and then laser focusing points can not be accurately located in a glass body. The positions of the laser focusing points are adjusted according to the thickness of the glass, so the glass laser engraving method and device can be suitable for large-area planar glass with uneven thicknesses, and accurate location can be achieved. Double supporting components are adopted, the device is driven by a pneumatic component, and real-time switching can be achieved through a control system; it is guaranteed that the laser focusing points will not be blocked by the supporting components in the back engraving process of the glass, and the usability of the system is improved.

Description

technical field [0001] The invention relates to a glass laser engraving method and device, in particular to a glass laser engraving device and method that uses a three-dimensional platform to perform dynamic focusing to realize glass front engraving, inner engraving and back engraving. Background technique [0002] The prior art has widely used laser technology to perform high-precision engraving at any position in the large flat glass body. For example, the invention patent "Large Format Laser Engraving Machine" with the application number of 201210291057.2 discloses a large format laser engraving machine, which includes a bed and Y-axis rails on both sides of the bed and a bracket that can slide along the Y-axis rails. On the X-axis track, there is a laser processing head on the X-axis track, and a dial indicator with the measuring head facing down is set on the laser processing head. There are many base bars parallel to each other and equipped with chute on the bed, and t...

AI Technical Summary

Problems solved by technology

The above-mentioned prior art generally has the following problems: 1) when engraving a large-area three-dimensional pattern, the method of engraving in partitions will produce obvious seam marks, which will affect the engraving quality; 2) because the large-area glass panel is not uniform in thickness , it is impossible to accurately locate in real time in the three-dimensional coordinate system according to the change of glass thickness during the engraving process; 3) At the same time, due to the existence of the support plate, the realization of the back engraving on the position of the support plate is blocked, which obviously affects the engraving quality

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