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ALS maintenance classroom (3) Replace Upper protective lens
Posted on:
2023-07-28
Precautions:
1. Before replacing the protective lens, we should turn off all fans and fans, try to create a wind-free and dust-free environment, and remember to wash hands (if conditions permit, please operate in a dust-free box).
2. After the protective mirror is replaced, it needs to be coaxially calibrated. Coaxiality directly affects the quality of cutting. Poor coaxiality will cause one side to be cut well and the other side to be cut badly when cutting the iron plate. That is to say, the laser beam and gas, the laser beam need to be shot from the middle of the nozzle.
Preparation tools: alcohol, cotton swab, screwdriver, disposable gloves, masking paper, new protective lenses, transparent tape
Operation steps:
1. Wash hands and wear disposable gloves
2. Dip a small amount of alcohol with a cotton swab and carefully wipe the area around the protective lens cover to prevent dust from entering the cover and affecting the optical lens inside when opening the cover
3. Open the upper protective mirror cover with a screwdriver
4. Open the upper protective mirror cover, quickly pull out the mirror holder, and then seal the lens mouth with masking paper to prevent dust from entering
- Use a small screwdriver to pry the plug seal out
6. Turn the whole mirror holder over and pour it into the palm of your hand, and throw away the old lens
7. Take out the new lens. When disassembling the new protective lens, you need to aim at the strong light to check whether there is oil stain on the lens. (It is inevitable that the lens will have oil stains and spots during transportation, but it will not affect the correct use). If yes, it needs to be carefully wiped with a cotton swab or dust-free cloth. After cleaning, pinch it at both ends of the lens and put it into the mirror holder, quickly cover it with a plug seal, and pay attention not to touch the two sides of the lens with your hands.
8. With the cover facing down, quickly remove the Meiwen paper and put the mirror holder in
9. Finally, cover the protective mirror cover and screw in the screws to replace it
10. After the lens is installed, it is necessary to coaxially find the laser center point (this is because the production process of each factory is different, and the error range is also different). The specific operation method is as follows:
11. Take a piece of transparent tape and stick it under the nozzle
12. "Open the shutter" on the remote control panel, and then press "Laser Spot"
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13. Check whether the light output point is in the center of the nozzle. The light output point is in the center of the nozzle, indicating that the coaxiality is successful and the cutting can be carried out (if the light output point is not in the center, the position of the lower focus lens needs to be adjusted)
Related Info
ADD: No. 521, Zhujiang Road, Huqiu District, Suzhou City, Jiangsu Province, China
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