1. Physical test method: put a card in the front position, press and hold the laser test switch for 1 second, observe the degree of burning of the paper light spot. If the spot burns very lightly, replace the laser tube;

2. By visual inspection, turn on the machine shell, turn on the power supply, adjust the current to the normal engraving position, press and hold the test switch, and observe the color of the laser tube. If the color is pink, the gas in the laser is OK. If it is white, the laser tube should be replaced.

3. Wipe the lens, adjust the light, and continue to use if it can be used under good focal length;

4. The special laser tube of the existing laser engraving machine is not expensive. The price of the laser tube is generally between 600 and 1000, and the replacement is also very affordable;

Installation and debugging steps of CO2 laser tube, the core part of laser engraving machine

The laser engraving machine can only engrave or cut samples after the optical path is adjusted. The quality of optical path directly affects the quality of laser engraving and cutting.

The first step is to adjust the optical path of the laser tube:

First, adjust the laser current to less than 8 ma (50%), so that the laser power is not too strong;

The second step is to adjust the light path of the laser tube spot and the first reflector.

Place the dimming paper in front of the first lens, press the "Spot" button with your hand (press it lightly and release it immediately to see the laser spots on the dimming paper), and check whether the spots fall on the first lens (preferably in the middle). If you can hit the lens, you are done. If the lens cannot be hit or is missed, it is necessary to adjust the position or height of the first reflector frame (or laser tube) to meet the above standards.

Step 3: Adjust the light path between the first reflector and the second reflector.

First, put the laser paper in front of the second lens, move the guide rail to the upper left corner and press the spot button to see the position of the laser spot. Then move the guide rail to the lower left corner and press the click button again to see if the positions of the two spots (upper left corner and upper right corner) coincide.

If they coincide and the spot position is within the lens, it means that the optical path between the first and second reflective lenses is correct; If it is not coincident, it is necessary to adjust the adjustment screw on the primary reflector frame behind the first reflector, adjust the two points together, and then adjust the up, down, left and right (X direction) position of the primary reflector frame to make the light reflected by the first reflector hit the second reflector (center).