Working principle of laser welding robot
The semiconductor laser soldering robot system is equipped with a position correction system to ensure accurate solder joint positioning and optimized process parameters. Its principle involves illuminating marked points on the workpiece with a camera, followed by high-performance image processing and a laser displacement sensor to correct the soldering position and height. Process parameters such as output power, laser irradiation time, and soldering temperature profile are set via an LCD touchscreen. The laser head is equipped with an anti-smoke optical lens and protection system; maintenance only requires replacing the protective glass at the lens tip. The system's compact, high-power laser generator allows selection of a laser beam with a suitable spot diameter, offering two continuously adjustable power options: 30W and 50W (air-cooled), enabling optimal soldering power.
Features of laser welding robots
1. It is non-contact, the laser-generated dot diameter can be as small as 0.1mm, and the solder feeding device can be as small as 0.2mm, which can realize the soldering of micro-pitch packaged (mounted) components.
2. Because it is a short-term localized heating, the thermal impact on the substrate and surrounding components is minimal, resulting in good solder joint quality.
3. No soldering tip consumption, no need to replace heater, and high work efficiency during continuous operation.
4. When performing lead-free soldering, solder joint cracks are less likely to occur.
5. The surface temperature of the solder should be measured using a non-contact method, rather than a method that actually contacts the solder head.
Applications of laser welding robots
Laser welding robot systems are increasingly being used in the welding of camera parts, LCD parts, and components such as micro motors and micro transformers for electronic devices such as mobile phones and laptops. They can also be used in fields such as LCD TVs, high-end digital cameras, aerospace and military manufacturing, and high-end automotive parts manufacturing.
