Marking principle and main features of fiber laser marking machine

The fiber laser marking machine uses a fiber laser to generate laser light, and the fiber exports the laser light and then cooperates with an optical high-speed scanning galvanometer for workpiece marking. Its core component is a fiber laser.

Fiber lasers use rare earth-doped fibers as gain mediators. Because the fiber core in the fiber laser is very thin, it is easy to form a high power density in the fiber under the action of the pump light, resulting in the 'number inversion' of the laser energy level of the laser working material. Therefore, when a positive feedback loop is properly added to form a resonant cavity, laser oscillation can be formed. In addition, because the fiber matrix has a wide fluorescence spectrum, fiber lasers are generally made tunable (that is, their wavelength can be adjusted within a certain range), and several colors (corresponding materials) can be marked during marking.

The characteristics of the fiber laser marking machine are as follows:

1. The fiber laser marking machine adopts the fiber laser, and the service life is long Up to 100,000 hours, the performance is superior in the world ranking. The beam quality is high, the output is the fundamental mode, and the diameter of the focusing spot is less than 20um. The divergence angle is 1/4 of that of the semiconductor pumped laser. The single line is thinner, especially suitable for fine and precise marking.

2. Small size, low power consumption, the whole machine consumes less than 500W; built-in air-cooling cooling method, abandons the bulky water-cooling unit, and occupies a smaller area , the installation is easier, and it is energy-saving and portable.

3. High electro-optical conversion efficiency, easy to use, no need for optical adjustment or maintenance, compact structure, high system integration, and fewer failures.

4. No need for any maintenance, long service life, suitable for working in harsh environment.

5. The processing speed is fast, 2-3 times that of the traditional marking machine, optical scanning galvanometer, high laser repetition frequency, high speed without distortion.

6. Fiber lasers are equipped with optical isolators, which can effectively shield reflected light, and can be used on high-brightness and high-reflection materials such as gold, silver, copper, aluminum, and silicon. To operate, it does not need to deviate from the center of the field lens, which greatly broadens the application field, and for different metals, it can exert a certain color by adjusting the frequency and energy.

7. The marking software is powerful, compatible with Coreldraw, AutoCAD and other software files, supports PLT, PCX, CXF, BMP, etc., and can directly use SHX, TTF fonts; Support automatic Leadtech Coding, printing serial number, batch number, date, barcode, QR code, automatic number jumping, etc., USB interface output control.

(This article is edited by the editor, please be sure to indicate the source:)

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