Safety hazard in operation of UV laser marking machine

What safety precautions should be paid attention to when operating the UV laser marking machine

The UV laser marking machine uses a solid-state laser as a laser source; it is scanned by a high-speed galvanometer; it is focused by a high-precision flat field mirror Then the laser is applied to the surface of the workpiece to achieve the purpose of marking. The high-speed control software sends control commands to the laser and the galvanometer through the computer, and can mark the designed graphics on the workpiece.

Then what matters should be paid attention to when operating the laser marking machine in use, the main thing is to pay attention to the safety features of the laser

(1) Remote hardware lock, the control box of each laser control box The rear is equipped with a remote hardware lock.

(2) Key switch, the laser control panel is equipped with a key switch, and the laser may emit light only when the key switch is turned on.

(3) Laser marking, the technical parameters such as laser output wavelength, power and pulse width are marked on the surface of the laser head, and a danger warning sign is attached to the front of the laser head. The upper triangular label indicates the direction of the laser exit, while the lower strip window displays the laser hazard warning.

The laser output from the laser of the UV laser marking machine directly shoots into the human eye, which will cause serious damage to the eyes and even lead to blindness.

The most important thing to note during the use of the laser is to protect the safety of the eyes. In addition to the main beam, there are small beams of various angles in the vicinity of the laser system. These beams are formed by the specular reflection of the main beam on various polished surfaces such as lenses, mirrors, and other optical elements. Although these beams are very weak compared to the main beam, they can still cause significant damage to the human eye. The laser beam is so powerful that it can burn people's skin, burn clothes and surface paint, and even travel a considerable distance, it can still ignite volatile substances such as organic solvents. Laser beams can also damage photosensitive elements in optical cameras and light-emitting diodes, as well as indirect contact from reflective surfaces.

Operators need to keep the following safety precautions in mind during use:

1. It is strictly forbidden to open the casing of the laser cavity under any circumstances.

2. For Class 4 laser products, a sign should be placed near the laser operating area.

3. Reflected light and scattered light are equally harmful. Avoid looking directly at the output beam of the laser.

4. Protective goggles must be worn when using the laser (the 355nm band has high reflectivity).

5. Equipment integrators should make the optical path system as closed as possible.

6. A principle must be followed during use: the light path cannot be at the same height as the human eye.

Because of the special properties of laser beams, lasers have certain dangers compared with the light generated by ordinary light sources. All laser operators and personnel working in the vicinity of the laser system must be clearly aware of the dangers of laser use. Only by being familiar with the laser equipment and having a full understanding of the coherence and light intensity of the laser beam can the safety of the laser operator be guaranteed.

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