6-Series aluminum alloy profile welding device and method based on laser cleaning

The invention discloses a 6-series aluminum alloy profile welding device and method based on laser cleaning, and belongs to the technical field of aluminum alloy welding. The device and the method aimto solve the technical problems that in the prior art, the labor intensity of cleaning an aluminum alloy workpiece before and after welding is high, the working efficiency is low, and harmful substances generated by welding are harmful to the environment and the human body. The device is characterized in that a welding gun is installed on a welding gantry, laser emitted by a laser device is irradiated on the surface of the workpiece through a laser cleaning head, the laser device is installed on the welding gantry, the laser cleaning head is installed at the front end of the welding gun in the advancing direction of the welding gun, and a dust suction port of a dust removal system is installed on an adjustable laser cleaning head holder. According to the device and the method, oxidation film removing before weldi