Optical fiber laser assembly line two-dimensional code marking method and system

Abstract

The invention discloses a fiber laser assembly line two-dimensional code marking method and system, and the method comprises the steps: taking out a workpiece from a die-casting die through a manipulator, and conveying the workpiece to a two-dimensional code marking position; wherein the workpiece comprises a marking area corresponding to a two-dimensional code marking position, and the marking area comprises marking sub-areas divided according to the size of two-dimensional code pixel points; an infrared thermometer is controlled to collect the temperature of each marking sub-area, and the highest temperature in each marking sub-area is selected as the standard temperature; according to the standard temperature, an optical fiber laser is controlled to preheat all the marking sub-areas with first power, so that the temperature difference value between all the marking sub-areas does not exceed the standard temperature difference value; and after preheating is completed, according to the standard temperature, the optical fiber laser is controlled to conduct two-dimensional code marking on the marking area of the workpiece with second power. According to the invention, the two-dimensional code can be uniformly marked, and the recognition accuracy of the two-dimensional code is ensured.

Description

technical field [0001] The invention relates to the field of laser marking, in particular to a method and system for marking two-dimensional codes on a fiber laser assembly line. Background technique [0002] Two-dimensional bar code / two-dimensional bar code (2-dimensional bar code) is a graphic that uses a specific geometric figure to be distributed on a plane (two-dimensional direction) according to certain rules, black and white, and records data symbol information. QR codes can mark and store information on workpieces. [0003] In the prior art, the two-dimensional code is usually pasted directly on the die-casting workpiece, but the pasting is easily affected by time and the environment, resulting in a decrease in the sticking force and the fall-off of the two-dimensional code. Without the QR code, it is difficult to effectively identify the die-casting workpiece. There are few methods in the prior art that can permanently fix the two-dimensional code on the die-casti...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the two-dimensional code is usually pasted directly on the die-casting workpiece, but the pasting is easily affected by time and the environment, resulting in a decrease in the sticking force and the fall-off of the two-dimensional code

Without the QR code, it is difficult to effectively identify the die-casting workpiece

There are few methods in the prior art that can permanently fix the two-dimensional code on the die-casting workpiece

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