Practical knowledge of laser engraving machine:
Installation: the installation fulcrum of the laser tube of the laser engraving machine shall be reasonable, and the fulcrum shall be at 1 / 4 of the laser tube, otherwise the spot mode of the laser tube will deteriorate, and some spots will become several points after working for a period of time, resulting in the decline of laser power and failure to meet the requirements; The cooling system shall be grounded, the water tank and waterway shall be cleaned frequently, and the control points of the refrigeration and temperature control water tank shall be reasonable, otherwise the laser tube will be damaged, the condensation power will be reduced, the cold water head of the tube will fall off, the service life will be greatly shortened, and sometimes it will not work.
Cleaning: check and clean the water protection. The cooling water often cannot be flushed. The shape of the water protection float or the water protection float switch is not reset. The cooling water quality is good, and the aluminum oxide of the water nozzle is too serious. After use for a period of time, regularly clean the dust in the water pump, water pipe and water protection, otherwise the laser tube will burst or the cold water head will fall off; Check and clean the air suction device and clean the air duct of the fan, otherwise the smoke and dust will not be discharged, which will seriously pollute the lens and laser tube, making all mechanical and electronic components easy to oxidize and poor contact; The optical path system shall be clean and correct, otherwise the laser tube will be prematurely aged and broken; Clean the moving parts of the machine so that the machine can always be in good working condition.
Laser tube: the laser tube is made of glass and is fragile. During installation and use, avoid local stress; During the working process of the laser tube, no scale shall be opened in the cooling water pipe to avoid blocking the cooling water and poor heat dissipation effect. If scale is found, the cooling tube can be cleaned with 20% dilute hydrochloric acid and used after the scale is removed; The two supporting points of the laser tube shall be 1 / 4 of the total length of the points at both ends of the laser tube or on the marked points to ensure that the cooling water flow is 2L ~ 4L / min, otherwise it will cause mode hopping and reduce the laser power; It is recommended that customers choose the special cooling equipment of laser equipment, which can prolong the service life of laser tube to the greatest extent.
Inspection: check the focusing lens and reflector of the laser engraving machine. After working for a while, the lens frame will heat, and the lens surface will change color and rust; Peeling and cracking are the objects to be replaced, especially many customers use large air pumps and air compressors, so that water will soon accumulate on the focusing lens; The power root of the power grid shall be matched, and the power distribution and contact points of each part of the whole equipment shall be good; The honeycomb bottom plate shall be flat, otherwise the focal length will be inconsistent, and some places will not be cut through. In this way, the light intensity will be increased, which will also cause the aging of the laser tube.
Environment: the working environment of the machine is too bad. When the indoor temperature is higher than 40 ℃ and lower than 0 ℃, there is too much dust and serious air pollution. In this way, the machine is seriously damaged and the faults are rising. In the humid environment, various electrical accessories are easy to have problems. When working in an environment where the temperature does not exceed 30 ℃, please connect the cooling water first, adopt the principle of low inlet and high outlet, adjust the position of the outlet pipe, ensure that the cooling water is full of the laser tube, and there are no bubbles in the tube, and then turn on the power supply.
Intensity: the working current of the laser tube should be reasonable and can not work at the light intensity of 900 ~ 100 for a long time. The heat dissipation of the laser power supply shall be smooth, otherwise the working current shall be adjusted by more than 50%, and the temperature rise is very high, which will increase the failure rate of the laser power supply.
Machine assembly and disassembly: when installing or disassembling the laser engraving machine, the first thing to do is to observe, that is, the transmission parts of the machine and its movement law, the structure of various parts, and pay attention to its concentricity, perpendicularity, parallelism and straightness. After the installation, disassembly and repair of the machine, for the sake of safety, first support and test the machine by hand, and then start it up if there is no abnormality, Listen carefully to every sound emitted by the machine. The whole machine has low noise and no noise. Otherwise, it is abnormal. It must be reinstalled and debugged.
Motion system: after the guide rail is replaced, pay attention to its parallelism. When sliding by hand, it should be flexible and free. The movement of the guide rail should ensure that it can move at a uniform speed and in a straight line. When disassembling and assembling the slider, you should first understand its structure. It is composed of many decimal steel balls. Improper installation methods will lead to falling off; Regularly clean and replace the grease on the screw rod, and then clean the screw rod with antirust oil. Before cleaning, separate the optical shaft and pulley under the screw rod with cloth to prevent the dirt falling during cleaning from damaging the optical shaft and metal pulley. Clean the connecting parts and accessible screws, and coat the surface with engine oil so that it will not affect the disassembly due to rust.