In modern manufacturing, laser plastic welding machines have become indispensable key pieces of equipment, widely used in industries such as automotive, electronics, medical devices, and packaging. For example, in the automotive industry, these machines are used to join interior components, helping reduce vehicle weight while ensuring strength and sealing performance. In the production of medical devices, they enable precision welding of plastic parts, ensuring product safety and hygiene.
The high efficiency, precision, and non-contact welding features of laser plastic welding machines not only improve product quality and production efficiency but also reduce manufacturing costs, giving companies a competitive edge in the market. However, like any mechanical equipment, laser plastic welding machines are inevitably affected by various factors during long-term use—such as dust, temperature, humidity, and natural component wear. If left unchecked, these factors can lead to degraded performance, unstable welding quality, equipment failure, and even shortened service life.
Therefore, scientific and proper maintenance is essential. It ensures stable and reliable operation, maintains optimal performance, extends equipment lifespan, and supports smooth production. Today, Wanzhong Laser , a leading manufacturer of laser plastic welding machines, would like to share some basic daily maintenance tips with you.
(1) Cleaning Procedures
After each use, it is essential to clean the surface of the equipment with a clean, soft non-woven cloth to remove dust, oil stains, and other contaminants. This prevents foreign matter from entering the internal components and affecting the performance of electronic parts.
For the welding head, use specialized cleaning tools and solvents to gently wipe away any plastic debris or residue. Accumulated residue may affect welding accuracy and quality.
Optical lenses are critical components in laser transmission. Dust, fingerprints, or other contaminants on the lens surface can cause energy loss and beam scattering, reducing welding effectiveness. Therefore, use lens paper soaked in an appropriate amount of anhydrous alcohol or lens cleaner, and gently wipe in a spiral motion from the center outward. Never use coarse materials or apply excessive pressure, as this may scratch the lens.
Additionally, regularly clean dust and debris from the optical path system to ensure smooth and efficient laser transmission and maintain consistent equipment performance and weld quality.
(2) Inspection Procedures
Before using the machine, inspect the laser beam spot shape and energy distribution to ensure they are uniform and normal. This can be done by observing preliminary welding results on test samples or by using professional energy detection instruments. If abnormal spots are observed—such as uneven energy distribution or focal offset—immediate calibration and adjustment of the laser source should be carried out to ensure stable and accurate laser output.
The fiber optic cable, which serves as a key medium for laser transmission, should also be inspected for signs of bending, damage, or loose connectors. These issues may result in increased transmission loss or even signal interruption.
Furthermore, pay attention to the water cooling system. Check if the water level in the tank is within the normal range, whether the water temperature remains within the required operating range, and whether there are any leaks in the cooling pipes. Stable water temperature is crucial for the normal operation of the laser; water that is too hot or too cold can affect output power and shorten the equipment’s lifespan.
Finally, inspect the electrical connections to ensure they are secure and free from short circuits, open circuits, or poor contact. Check whether all electrical components are functioning normally and look for signs of overheating, unusual odors, or abnormal noise to ensure electrical safety and stable operation of the equipment.
