The contamination of the laser lens in the equipment will have a serious impact on the laser output power, and even cause serious errors in the data acquisition system. If we can keep the lens clean frequently, it will undoubtedly prolong the service life of the whole machine.
1. Cleaning and maintenance of the focusing lens
The focusing lens material is ZnSe or zinc arsenic, which is relatively brittle and fragile; pay attention when disassembling and assembling: do not use too much force, and do not collide with hard objects. The surface has an anti-reflection coating, which is afraid of pollution, moisture, oiliness, and scratches; therefore, it is required to provide dry and degreasing air during work, and please use the recommended cleaning equipment and cleaning methods when cleaning.
2. The equipment must have sufficient air pressure when working. Before working, you can stretch your fingers to the light outlet (air nozzle) of the focusing lens to check whether there is gas blown out? Is the air pressure sufficient?
3. Before starting the machine for the first time every day, please remove the lens barrel with the focusing lens and observe whether the focusing lens is contaminated. The cleaning principle of the focusing lens is: try not to clean it without pollution, and clean it in time if there is pollution!
4. Cleaning steps:
①. Loosen the fastening screws, remove the air nozzle and the lens barrel in turn; first use a blower to blow off the dust on the surface of the lens;
②. If you really need to clean the lens, you can only use a soft laboratory-grade paper cotton ball, dip it in an appropriate amount of acetone or high-strength alcohol, and gently rotate it clockwise from the center of the lens to the edge. Both sides of the lens need to be cleaned when necessary, and care should be taken when scrubbing.
③. Install the lens barrel and air nozzle, adjust the focal length, and tighten the fastening screws.
5. If the focusing lens is too polluted or cannot be effectively cleaned for a long time, so that it cannot be cleaned, or the anti-reflection coating on the focusing lens falls off, the focusing lens needs to be replaced.
6. Generally, the focal length of a 2-inch focusing lens (reflected in the distance from the upper surface of the workpiece to the bottom of the air nozzle) is about 6~7mm, and the user can obtain the most suitable focal length after adjustment according to the actual situation.
7. Keeping the focusing lens clean is a strong guarantee for cutting, engraving ability and effect.
8. When installing a new laser lens on a new device, be sure not to press the lens hard, it will cause serious damage to the optical lens
2. Cleaning and maintenance of the mirror
3. Cleaning supplies
1. Ordinary cleaning agent: acetone or high-concentration alcohol, which can be configured by the user.
2. Special cleaners: camera lens cleaner, ether (analytical grade), alcohol (analytical grade)
3. Clean soft cotton balls: laboratory-grade paper soft cotton balls or medical cotton swabs.
