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Teach you how to save the maintenance fee of a large laser marking machine

Date:2018-6-14 11:16:20 Number of visits:
Laser marking machine in the long time use process will inevitably appear some small problems, when the machine problems, how should we correctly handle it? Today, the big Xin Hua laser technicians to follow the simple introduction.
1. In the marking process, the mark is not clear
Whether the laser resonator changes or not, fine-tuning the resonator lens. Make the best of the output spot.
The output of the acoustooptic crystal is low or the output power of the acousto-optic power supply is low; the acoustooptic crystal position is adjusted or the working current of acoustooptic power is increased.
The laser deviates from the center of the galvanometer: adjusting the laser;
If the current is adjusted to about 20A, the sensitivity is not enough enough: krypton lamp is aging and new lights are replaced.
2. In the course of marking, the position of marking is offset
Check whether the output of the galvanometer is normal, if not in the normal range, replace the power supply.
Check whether the galvanometer signal has been supplied to 220 locations, if not, earthing with signal shielded lines.
Check whether there is interference source nearby, and the production environment should be far away from the source of interference.
If there is no howl when testing the vibrating mirror, if there is no loosening in the vibrating mirror, there is no contact with the signal line. If there is, you need to change the vibrating mirror and replace the vibrating mirror back to the company for maintenance.
3. The marking pattern of the laser marking machine is dim
Solution: check whether the heating temperature is too low and whether the molding pressure is decreased.
Key points of process control: the setting of molding pressure should take into account the molding temperature, the type of holographic material, or the softening point of the coating layer. The pressure is too high, the press plate is easily damaged or the holographic material is crushed; the pressure is too low, the compression image is not clear and incomplete; for circular pressure circle, the initial pressure of the pressure rolls on both sides is generally about 0.08MPa; the pressure of the pressure roller is gradually increased to 0.30 ~ 0.50MPa after the die pressure is started. The molding speed can be adjusted according to the quality of stamping and machine performance.
4. The identification pattern of the laser marking machine is not clear
Solution: check whether the thickness of the moulded plate is uniform, whether the molding pressure is too small, whether the temperature is too low, and whether the machine accuracy is down.
Key points of process control: the thickness error of press plate should be controlled within 0.O01mm, and the hardness should be kept at 230-280N/mm. Because the hologram can press the interference fringes by exerting certain pressure on the molding roller, if the hardness of the press plate is not enough, the internal stress in the process of imprinting will deform or damage the press plate.
5, the marking film sticky plate of the laser marking machine
The reason is that the hot pressing temperature is higher than the degradation temperature, and the viscosity of the coating increases, which will cause the film to be wrapped on the holographic impression roller.
Solution: reduce the temperature of the hot press.
6, the marking pattern of the laser marking machine is white
Solution: check whether the molding speed is too slow, and mold temperature is too high.
7. The marking pattern of laser marking machine is clear and fuzzy.
The reason is that the temperature distribution of the hot pressing device is uneven or the moulded plate is not smooth.
8, krypton lamp can not trigger
Check all power connection lines.
The high voltage krypton lamp is aging and the krypton lamp is replaced.
The above is the content of Da Xin Hua laser technician finishing, hoping to help you! Da Xin Hua laser produces and sells fiber laser marking machine, fiber laser welding machine, free technical guidance, free sample. Welcome to inquire /en/

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