How to solve the position offset of UV laser marking machine

When the UV laser marking machine is in use, the problem of weak laser and shallow laser engraving often occurs. This problem is generally caused by improper operation.

1. Check whether the laser of the UV laser marking machine deviates from the center point after entering the galvanometer. The optical path is biased so that the beam cannot be concentrated in the corresponding marking area, so the marking pattern and text will be become very shallow. At this time, the frequency multiplier can be used to adjust the optical path to restore it to a normal state.

2. Check whether the output current of the acousto-optical power supply is low or the position of the acousto-optical crystal is shifted, increase the current of the acousto-optical power supply or correct the position of the acousto-optical crystal. If the current is too small, the beam is too small or the marking frequency is abnormal, thus affecting the marking effect. Generally, the larger the current of the laser engraving machine, the higher the marking intensity will be.

3. Is the inside of the resonant cavity of the ultraviolet laser marking machine too dirty due to the long use time and the lens of the ultraviolet laser marking machine is too dirty, so that the emitted laser beam cannot be effectively carried out? Beam expansion and focusing will affect the marking effect, the position will change slightly, and each mirror of the resonator will be fine-tuned to achieve the best spot effect. If the lens is too dirty, you can use a cotton swab dipped in alcohol for scrubbing. This cleaning method is not only effective but also will not damage the parts of the laser engraving laser machine.

4. The speed of the UV laser marking machine is too fast, and the beam has not reached the predetermined marking effect. If the marking speed exceeds the designed frequency range, it will affect the marking effect and make the text or pattern unclear.

5. If the current of the UV laser marking machine is adjusted to 25A, the marking depth of the laser is not strong enough, then the problem is the krypton lamp, and the krypton lamp needs to be replaced.

UV laser marking machine The focal depth of the laser beam is inversely proportional to the wavelength. For the objective lens back-scanning method, if the static focusing method is used, the focusing surface is a spherical arc surface. If the defocus error in the entire working surface is controlled within the focus depth range, the static focusing method can be used. If the error deviates too far from the depth of focus range, dynamic focusing is required.

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