The laser output power of the laser marking machine is normal, but the laser beam cannot mark:
① Whether the optical path system is adjusted accurately;
② Whether the acousto-optic switch can play a switching role;
Reasons for the decrease of laser output power:
① Whether the laser resonator changes: fine tune the front and rear resonator lenses to make the output spot reach the ideal state;
② Whether the total reverse and output diaphragms are stained;
③ Condensation on the surface of the laser rod of the laser marking machine due to temperature difference;
What to do about the focus shift of the laser marking machine: because each focus lens has a range corresponding to the depth of focus, and using the method of off focus will easily lead to the edge being at the critical point of the depth of focus or exceeding the range of the depth of focus when marking a pattern in a large range, so it is very easy to have uneven effects. Therefore, the method of off focus marking needs to consider the problem of laser energy.
Daily operation and maintenance points of marking machine:
1. Marking parameters of the marking machine: the current shall not exceed 20a to avoid laser damage to each lens.
2. Before the marking machine works, turn on the chiller and wait for the real-time temperature of the chiller to be consistent with the set temperature. The difference shall not exceed 0.5 ° C.
3. The circulating water of the chiller shall be replaced once a week to half a month, and the replacement has nothing to do with the frequency and time of the marking machine.
4. Check and replace the filter element of the water chiller frequently.
5. After cleaning the mirror, only 98% alcohol can be cleaned with cotton swabs, and wiping towels can be gently wiped.
