Hello, everyone. This issue will share some knowledge about laser engraving machines. See if you have a clearer understanding after understanding?

Laser engraving can improve the efficiency of engraving, make the surface of the engraved part smooth and round, quickly reduce the temperature of the engraved non-metallic material, and reduce the deformation and internal stress of the engraved object; According to different laser light sources, it can be divided into CO2 non-metallic laser engraving machine and optical fiber metal engraving machine. CO2 non-metallic laser engraving machines generally use glass laser tubes in China, and some high-end laser engraving machines use CO2 metal RF tubes.

Laser engraving machine, as its name suggests, is an advanced equipment that uses laser to engrave the materials that need to be engraved. Laser engraving machine is different from mechanical engraving machine and other traditional manual engraving methods. Mechanical engraving machine uses mechanical means, such as diamond and other materials with high hardness to carve other things.

The laser engraving machine uses the heat energy of the laser to engrave the material, and the laser in the laser engraving machine is its core. Generally speaking, the laser engraving machine is more widely used, with higher engraving accuracy and faster engraving speed. Moreover, compared with the traditional manual engraving method, laser engraving can also make the engraving effect very delicate, which is no less than the craft level of manual engraving. Laser engraving machine has gradually replaced the traditional engraving machine because of its advantages. Become the main engraving equipment.

classification

Laser engraving machines can be roughly divided into non-metallic laser engraving machines and metal laser engraving machines.

Non metal engraving machines can be divided into CO2 glass tube laser engraving machine and metal RF tube laser engraving machine.

Metal engraving machines can be divided into: metal fiber marking machine and metal fiber laser engraving machine.

Fault points

1. The installation fulcrum of the laser tube should be reasonable, and the fulcrum should be at 1 / 4 of the total length 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, resulting in continuous tube replacement. Carefully read the precautions for the use of laser tube.

2. The cooling system shall be grounded, the water tank and water circuit shall be cleaned frequently, and the temperature control point of the refrigeration temperature control water tank shall be reasonable, otherwise the laser tube is easy to be damaged, the condensation power is reduced, the cold water head of the tube falls off, the service life is greatly shortened, and sometimes it cannot work, resulting in continuous tube replacement.

3. The water protection shall be checked and cleaned frequently. The cooling water cannot be flushed frequently. The water protection float switch or the water protection float switch does not reset, and the short-circuit method cannot be used to solve the urgent problem. The cooling water quality is good, and the aluminum oxide of the water nozzle is too serious. After use for a period of time, the dirt in the water pump, water pipe and water protection should be cleaned regularly, otherwise the laser tube will burst or the cold water head will fall off.

4. The air suction device shall be checked and cleaned regularly to clean the air duct of the fan Otherwise, a lot of smoke and dust can not be discharged, which will seriously and quickly pollute the lens and laser tube, and make all mechanical and electronic components easy to oxidize, resulting in poor contact.

5. Check the focusing lens and reflector. After working for a while, the lens frame will heat, and the lens surface will change color and rust; Film removal and cracking are the objects to be replaced. In particular, many customers use large air pumps and air compressors, which will quickly accumulate water on the focusing lens. Therefore, it is necessary to check the cleanliness and quality of the optical path system of the lens (laser tube outlet) on time.

6. The working environment of the machine should not be too bad. If the ambient temperature is higher than 30 degrees and lower than 18 degrees, there is too much dust and serious air pollution, so the machine is seriously damaged and the failure rate is rising; Electrical accessories are easy to go wrong in humid environment. Therefore, the customer is specially reminded to improve the working environment and maintain the machine frequently.

       7. The power of power grid shall be matched. The power distribution and contact points of all parts of the whole equipment shall be good (the fan, water cooler, laser machine, laser power supply and computer shall be powered independently).

8. The working current of the laser tube should be reasonable and can not work at 90-100 light intensity for a long time; To rationalize the application of laser and save laser energy; The optical path system should be clean and correct, otherwise the laser tube will be prematurely aged and broken. Therefore, the working time intensity of the laser machine should be adjusted at 50-60%, and then the working speed should be adjusted according to the material. This is the best working state of the laser tube.

9. The bottom plate and the processed materials should be flat, otherwise the focal length will be inconsistent, and some parts will not be cut through. In this way, the light intensity will be increased, which will also lead to the rapid aging of the laser tube.

10. The heat dissipation of the laser power supply should be smooth, otherwise the temperature will rise very high once the working current is adjusted by more than 50%, which will increase the failure rate of the laser power supply. For example, TM series machines can take down the side door and directly radiate the heat emitted by the power supply.

matters needing attention

1. When using auto focus, it should be noted that the auto focus rod must be fastened, otherwise the worktable will top the laser.

2. When the laser engraving machine is working, it is forbidden to open the machine cover.

3. Turn on the smoke exhaust and blowing equipment during processing.

4. When processing wood and paper, attention must be paid to the processing speed to avoid fire.

5. In the initial stage, when users carry out irregular processing, they first carry out red light positioning.

6. When processing thin wood and changeable materials, adjust the amplitude of the variable water products to be less than 1mm.

7. When cutting, the workpiece holder shall be more than 2 cm away from the workbench.

8. Cleaning of reflection lens and focal length lens: hold the reflection lens with two fingers. The other hand holds the camera lens cleaning paper to clean the lens.

9. Generally, when engraving vector files, the resolution should be higher, and when engraving point old files, the resolution should be lower.

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