Common faults and solutions of laser engraving machines？ | Marking machine industry information

First, the laser head does not emit light

Press the test button on the operation panel to observe the status of the ammeter: ①No current: check whether the laser power supply is connected, whether the high voltage line is loose or replaced, and whether the signal line is loose; ②Current: check whether the lens is broken and the light path is seriously replaced; 2 , Check whether the water circulation system is normal: ① No water flow: Check whether the water pump is damaged or not powered on; ② Water flow: Check whether the water inlet and outlet are reversely connected or the water pipe is broken; 3. Can be fired, can self-check, send data without light ( Check if the computer settings are correct)

Second, the carving varies in depth or not deep

Check whether the water flow in the water circulation system is smooth (water pipes are bent or broken); 2. Check whether the focal length is normal (re-calibrate); 3. Check whether the optical path is normal (re-calibrate); 4. Check whether the paper on the plate is too thick ,, whether the amount of water is too much (re-correct); 5. Check whether the beam is parallel (adjust the belts on both sides); 6. Check whether the lens is broken (replace); 7. Check whether the lens or laser tube emitting end is contaminated (re-clean); 8. Check whether the water temperature is higher than 30℃ (replace the circulating water); 9. Check whether the laser head or focusing lens is loose (tighten); 10. The laser current intensity must reach 8ma; 11. The laser tube is aging (replacement: no warranty period) toll);

Third, the initialization is not normal

Check whether the sensor is stained with dust, poor contact or damaged (wipe the dust on the sensor or replace); 2. Check whether the flexible conductive belt data line is poorly connected or damaged (replace the data line, unplug or replace the data line); 3 , Check whether the ground wire contact is reliable or the high-voltage wire is damaged (re-ground or replace the high-voltage wire); 4. Poor contact of the motor wire.

Fourth, omission

The initialization is incorrect, and the data has been sent (corrected); 2. The operation sequence is reversed (re-output); 3. Electrostatic interference (check whether the ground wire is replaced);

Fifth, clean the wrong side of the hook, not closed

Whether the edited file is correct (re-editing); 2. Whether the selected target is out of publication (re-selection); 3. Check whether the software parameter setting is correct (resetting); 4. The computer system is incorrect (re-installing the operating system) And software); 5. Check whether the left and right belts are the same or whether the overlapping belts are too loose (belt tightening); 6. Check whether the belt or synchronization wheel is slipping, and the teeth are skipping (tightening the synchronization pulley or belt); 7. Check whether the beam is parallel ( Readjust the left and right belts);

Sixth, the computer cannot output the engraving machine

Check whether the software parameter setting is normal (reset); 2. Whether the engraving machine is started by positioning and then output (re-output); 3. Check whether the machine has not been reset beforehand (re-correct); 4. Check whether the output is correct and The software settings are serially consistent (reset); 5. Check whether the ground wire is reliable and whether static electricity interferes with the data line (reground); 6. Replace the computer serial port output test; 7. Reinstall the software and reset the test; 8. Format Reinstall the software to test the computer system disk; 9. The motherboard serial port is damaged and needs to be repaired or replaced.

Seventh, the path cannot be calculated

Check whether the calculation method of the set path is correct; 2. Check whether the graphic file format is correct (re-correct); 3. Uninstall the software and reinstall and set;

Eighth, common computer problems

The font gradually decreases (reinstall the operating system); 2. The amount of data is too large to calculate the laser path (waiting to switch or increase the computer memory); 3. The calculation path does not respond continuously, restart the computer to test.

Precautions for laser engraving machine

(1) When using automatic focus measurement, pay attention to that the automatic focus measurement rod must be fastened, otherwise the work surface will hit the laser head and change the track.

(2) When the laser engraving machine is working, it is forbidden to open the cover (top cover and front cover), otherwise the laser emission will be stopped and the processing quality will be affected.

(3) When processing the workpiece, the smoke exhaust and blowing equipment must be turned on, aiming at the smoke and dust to pollute the focusing lens and reflecting lens, otherwise it will affect the focusing and reflection of the lens, thereby indirectly affecting the processing strength and processing accuracy.

(4) When processing wood and paper workpieces, you must pay attention to the processing speed and processing intensity to avoid flames due to too slow speed and high intensity. The flame will damage the focusing lens, the lighter will affect the processing strength and processing accuracy, and the heavy machine will not be able to use.

(5) For the initial users to perform irregular processing time, they must first perform red light positioning and change whether the processing position is accurate, otherwise it is easy to produce waste.

(6) When processing thin wood, cardboard and other easily deformable materials, adjust the deformation range so that the level difference is less than 1 mm, and the size and focus difference is too large, which affects the processing accuracy. The size of the paper is fixed when processing the paper to avoid displacement during work. When cutting paper, especially soft paper (rice paper, burr paper), you can stack 15-20 sheets first, soak it with water, level it, and then cut it. This can improve work efficiency, while avoiding dangers due to material burning.

(7) When cutting, make the workpiece holder more than 2 cm away from the work surface to avoid damage to the back of the workpiece after laser reflection and waste products.

(8) Cleaning the reflective lens and focusing lens: insert two fingers into the reflective lens, and use the photo lens cleaning paper to soak the cleaning solution with the other hand, and gently drag it across the surface of the lens. It is forbidden to press the mirror surface with your fingers to avoid scratches; or Dip a cotton swab with camera lens cleaning liquid and gently wipe the focusing lens until it is smooth.

(9) Generally, when engraving vector files, the resolution should be higher (500dpi or 600dpi); when engraving dot files, the resolution should be lower (500dpi rough mode or 300dpi). The effect of such engraving will be very good.

Common faults of laser engraving machine and their treatment methods

(1) How to save time

When mass production of small size products of the same specification (approximately 75x25mm badge), the maximum width in the x direction should be less than 300mm, so that the laser head can be reversed faster, thereby increasing the speed. When engraving a bitmap, in addition, the laser machining depth is proportional to the power and speed, that is, the faster the speed is, the shallower the engraving depth under the same power, and vice versa, the deeper, so you should try to increase the speed and power to reduce time.

(2) How to avoid waste

Generally, the standard configuration of laser engraving machine has red light positioning equipment. When processing irregular products, first use red light positioning to observe whether the engraving position is correct, and then formally process. For materials that have not been seen before, the power should be observed. (3) If the machine has no laser, check the upper cover, the magnetic switch of the front door and whether the line is loose, replace it (a user in Shandong, before leaving work the first night, turn the machine It was wiped clean from the inside to the outside. The next morning, it was found that the machine did not emit laser. It was checked that the magnetic switch line was placed when the machine was wiped.) Then check the reflection and whether there is a problem with the focusing lens (a user in Beijing wiped the reflective lens After that, the fixing screw was not tightened, which caused the lens to loosen and cause no laser). If it is not for the above reasons, you must contact the maintenance personnel, please do not deal with it yourself.

(4) Engraving on a large area, with different depths when cutting

(5) Deformation of the lettering body a. If the head trolley is severely worn out, causing the head trolley to become loose, it should be caused by the incorrect laser light path. Just adjust the optical path to the right (special training is provided when purchasing the machine). Replace the pulley.

b. If the belt tensions on the left and right sides of the y-axis are not the same, adjust the hexagonal screws above the y-axis to the same tension.

c. If the driven wheel of the x-axis slider is worn, replace the driven wheel.

d. If the x-axis motor fails, replace the motor.

e. If the fastening screws of the x-axis motor and the pulley are loose, tighten the screws.

(6) The engraving machine engraves randomly, and the memory contact is poor or damaged. Reinstall the memory or replace the memory.

(7) The computer interface should be set to spp

(8) Keep the data line away from the interference source

(9) It is better to use the same socket for the computer and the laser engraving machine, and there is a potential difference. (10) If the power suddenly decays by half, the laser tube is faulty and can only be returned to the factory for repair.
(11) The power is attenuated gradually. First, check whether the reflecting lens and focusing lens are clean, and the optical path is correct. If there is no problem, you should contact the maintenance personnel in time.