What are the common faults and solutions for laser marking machines?

Because the laser marking machine has superior performance and frequent daily use, the laser marking machine will occasionally fail. If the problem cannot be solved in time, it may affect the production efficiency. So, today Leapion Laser shares 9 common faults and solutions for laser marking machines, as follows.

Examples of common failures of laser marking machines:

Fault 1: The laser intensity drops and the mark is not clear enough

Solution:

1. Check whether the laser resonant cavity has changed, and fine-tune the resonator lens to make the output spot the best.

2. When the acousto-optic crystal shifts or the output energy of the acousto-optic power supply is low: adjust the position of the acousto-optic crystal or increase the working current of the acousto-optic power supply;

3. The laser entering the galvanometer is off-center: adjust the laser;

4. If the current is adjusted to about 20A and the sensitivity is not strong enough: Generally, the krypton lamp is aging and needs to be replaced with a new one.

Fault 2: Krypton lamp cannot be triggered (refer to NTP power supply manual)

Solution:

1. Check all power cables;

2. If the high-pressure krypton lamp is aging, replace the krypton lamp.

Fault 3: One long and three short alarms when online

Causes and troubleshooting methods:

1. The software does not work, and the motherboard is loose. Please reinsert the computer when you turn it on.

2. When the Q drive alarm light is on, check whether the 37 pins and 15 pins are loose, and whether the Q switch is properly watered.

3. When the laser power alarm light is on, check whether the chiller is turned on and the lamp tube is damaged (if damaged, the lamp tube needs to be replaced).

Fault 4: Reasons for not emitting light

Solution:

1. Check whether the light path screws of the whole machine are loose, and the screws need to be tightened.

2. Check whether there is too much dust in the gun body to prevent damage to the gun endoscope. If found, the gun endoscope must be replaced.

3. When the chiller is turned on for a long time without turning on the laser power and lighting, it will cause freezing and no light. You need to turn off the power system of the whole machine for 1 hour and then restart it.

4. The lamp tube must be replaced if the lamp is aging or the laser power drops.

5. After working for a long time, the laser power drops, open the bottom cover of the gun body, you need to adjust it in the gun endoscope.

Fault 5: common computer problems

Check and pay attention:

1. It must be checked whether the graphics in computer processing are complicated.

2. Do not connect the online computer to the Internet cable, it is a separate control laser system.

3. If the computer is running slowly, don't be too impatient at this time to avoid crashing.

4. Please pay attention to prevent viruses to prevent system errors.

Fault 6: The XY axis of the worktable is not punctual

1. Check whether the screws on the slide rail of the workbench are loose.

2. The glass on the workbench can be determined according to the specific needs of users, and can be replaced with iron or plexiglass plates, and the balance under the glass can be adjusted.

3. Electronic rulers can be installed on the right and upper and lower corners of the workbench, which can be installed to facilitate the needs of customers.

4. The screw holes on the workbench can be easily used for positioning, which is determined by the product.

Fault 7: Jumping during operation, and the position is roughly fixed

Reasons and troubleshooting methods:

1. Check whether the synchronous belt is stretched for too long and deformed, if yes, you need to replace the new synchronous belt.

2. When the pinion groove in the reduction gear device of the large and small wheels is dirty, clean up the dirt on the pinion groove.

3. When the pinion of the drive shaft is dirty, clean the dirt on the gear groove of the drive shaft.

Fault 8: The start and end points of the closed line are not closed

1. If the timing belt is too loose, tighten the timing belt.

2. The connection between the gear and the shaft is loose and needs to be tightened again.

3. The X-axis guide rail and the Y-axis guide rail are not vertical, adjust the verticality of the X and Y-axis guide rails.

4. When the gap between the slider and the guide rail is large, the slider needs to be replaced.

Fault 9: If you encounter a situation that cannot be cut through

There are several reasons and troubleshooting methods as follows:

1. When the vertical light is not correct, please adjust the vertical light and readjust the light path if necessary.

2. If the focus is not adjusted properly, please re-adjust the focus.

3. The voltage is unstable, the voltage is low, and the laser current is too small. You need to replace a larger voltage stabilizer and increase the laser current output.

4. If the light outlet of the gas nozzle is blocked by spatter, clean the gas nozzle in time.

5. The protective air is blocked, and the air pump, air filter, and air circulation path need to be cleaned.

6. After the reflector and focusing lens are contaminated, clean the reflector and focusing lens with cleaning fluid.

7. Check if the power of the laser tube is down, if yes, you need to replace the laser tube.

8. If the light emitting control module on the main board is faulty, replace the main board directly.

9. There is a potentiometer device, the potentiometer is set too small or its own failure, adjust the potentiometer setting or replace the potentiometer.

10. The energy setting in the software is too small, please increase the energy.

11. For material issues, please select appropriate materials

12. If the focusing lens is cracked or the focusing effect is poor, replace the focusing lens directly.

13. There is too much dirt in the laser tube and the heat dissipation effect is poor. The cooling water must be pure water or distilled water.

Operation precautions of laser marking machine

1. It is strictly forbidden to start the laser power supply and Q-switching power supply when there is no water or the water circulation is abnormal;

2. No-load operation of the Q power supply is not allowed (that is, the output end of the Q-switching power supply is suspended);

3. If an abnormal phenomenon occurs, first turn off the galvanometer switch and the key switch, and then check;

4. It is not allowed to start other components before the krypton lamp is ignited to prevent high voltage from entering and damaging the components;

5. Pay attention to the output end (anode) of the laser power supply to be suspended in the air to prevent ignition and breakdown with other electrical appliances;

6. Keep the internal circulating water clean. Clean the water tank regularly and replace it with deionized water or pure water.

Today we first understand the 9 common faults of the above laser marking machine, have you learned it? These problems are relatively simple and common. If you encounter more complicated problems in the process of using the laser marking machine, we suggest that you still need a professional laser after-sales engineer to solve it. So as not to cause more serious damage and cause greater losses. If you have any other questions, please contact Leapion Laser directly, Leapion Laser 7×24 hours online service!