The reason for the decrease in power of ultraviolet laser marking machine

UV laser marking machine is a high-precision and high-speed laser marking equipment widely used for surface marking of various metal and non-metal materials. However, in practical use, there may be a problem of decreased laser power. This article will analyze the reasons for the power drop of ultraviolet laser marking machines and propose corresponding solutions.

1、 Laser power supply voltage drops
The voltage drop of laser power supply is one of the common reasons for the decrease in laser output power. As the usage time increases, the power supply may experience aging, leading to a decrease in voltage and subsequently affecting the output power of the laser.
To solve this problem, the following measures can be taken: regularly check the power supply voltage to ensure it is within the specified range. If the power supply voltage drops, it is necessary to replace the power supply in a timely manner.

2、 Lens and lens have fouling phenomenon
Stained lenses and lenses can affect the output power of the laser. When there is dirt, scratches, or other debris on the lens, it can cause scattering, absorption, and other effects on the laser, resulting in energy loss of the laser. At this point, the following measures can be taken: regularly clean the lenses and lenses to maintain their cleanliness. Check the lenses for scratches or damage, and replace them promptly if necessary.

3、 Inaccurate optical path system
The inaccuracy of the optical path system can also lead to a decrease in the power of the laser marking machine. The optical path system includes components such as laser, optical lens, and beam expander. If there is a deviation in the position or angle of these components, it will affect the focusing effect and output power of the laser. To solve this problem, the following measures can be taken: regularly check the position and angle of each component of the optical path system to ensure its accuracy. Readjust the optical path system to ensure accurate focusing of the laser beam emitted.

4、 The surface of the workpiece is not on the focal plane
If the surface of the workpiece is not on the focal plane, it will cause a decrease in the power of the laser marking machine. This is because when the laser hits the surface of the workpiece, if there is a deviation between the workpiece surface and the focal plane, it will cause the focusing effect of the laser to deteriorate, thereby affecting the output power of the laser. At this point, the following measures can be taken: check if the surface of the workpiece is flat, and if necessary, grind or adjust it. By adjusting the focal length of the laser, the surface of the workpiece is located on the focal plane.

5、 Inaccurate position and direction of the beam mirror
Inaccurate position and orientation of the beam mirror may also lead to a decrease in the power of the laser marking machine. The function of a beam mirror is to focus or scatter laser light. If there is a deviation in the position or direction of the beam mirror, it will affect the focusing effect and output power of the laser. To solve this problem, the following measures can be taken: regularly check the position and orientation of the beam mirror to ensure its accuracy. Readjust the beam mirror to ensure optimal focusing effect on the laser.

6、 The device has a long service life
The aging of the equipment may also lead to a decrease in the power of the laser marking machine. Laser, power supply and other components will gradually age during use, and the aging of these components will affect the output power of the laser. At this point, the following measures can be taken: regularly check the operation of each component of the equipment, and replace or repair any aging parts in a timely manner. Perform overall maintenance and upkeep of the equipment to maintain its normal operating condition.

7、 The laser entering the galvanometer deviates from the center
The deviation of the laser entering the galvanometer from the center can also cause a decrease in the power of the laser marking machine. If the laser entering the galvanometer deviates from the center, it will cause the focusing effect of the laser to deteriorate, thereby affecting the output power of the laser. To solve this problem, the following measures can be taken: adjust the laser or adjust the position and angle of the galvanometer so that the laser entering the galvanometer can accurately align with the center of the galvanometer.