Laser marking machine and its marking method

Abstract

The invention relates to a laser marking machine and a marking method thereof. The laser marking machine comprises a laser device, a galvanometer mechanism, a focus lens and a controller. The laser device, the galvanometer mechanism and the focus lens are sequentially connected. The controller is connected with the galvanometer mechanism. The laser device is used for generating lasers. The controller is used for carrying out dot matrix filling on an input to-be-marked pattern so as to form a dot matrix pattern to be output, wherein the dot matrix pattern is composed of multiple filling dots arranged in an array manner. The galvanometer mechanism is used for controlling laser deflection according to the position parameters of the filling dots output by the controller. The focus lens is usedfor focusing the lasers output from the galvanometer mechanism onto a workpiece so as to form marks. Due to the fact that the filling dots of the dot matrix pattern formed through dot matrix fillingare evenly and regularly distributed, it is ensured that a uniform marking effect is achieved on the surface of the workpiece, the problems that when the to-be-marked pattern is input in a traditionalline filling manner, filling lines for forming the output pattern are bent, the distance is nonuniform, and consequently the marking effect is nonuniform are solved, and the marking quality of the workpiece is greatly improved.

Description

Technical field [0001] The invention relates to the technical field of laser processing, in particular to a laser marking machine and a marking method thereof. Background technique [0002] When the traditional laser marking machine is marking the workpiece, the input pattern to be marked is line-filled through its controller to form a pattern output composed of multiple staggered filling lines; the galvanometer mechanism is controlled according to the control The pattern output information of the detector controls the deflection of the laser, and finally ensures that the laser moves on the surface of the workpiece to be marked according to the set trajectory and leaves a permanent mark. Because the line filling method is used to input the pattern to be marked, it is often limited by the positioning accuracy of the galvanometer mechanism, so that the filling line constituting the output pattern is prone to problems such as bending and uneven spacing, which ultimately leads to the...

AI Technical Summary

Problems solved by technology

Since the pattern to be marked is input by the line filling method, it is often limited by the positioning accuracy of the vibrating mirror mechanism, so that the filling lines constituting the output pattern are prone to problems such as bending and uneven spacing, which eventually leads to the processing of workpieces. Streaks appear, and the marking quality is difficult to achieve satisfactory results

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