The application discloses a
laser welding device for chain production and relates to the technical field of
laser welding devices.The
laser welding device comprises a base;the fixing seat, the mechanical arm, the heating
nozzle and the flow guide cover are cooperated, so that the
cooling speed of the welding seam is delayed, the welding seam quality and stability are improved, the functions of uniform heating of the welding seam and avoidance of
cracking and peeling defects are realized;based on a
heat transfer formula, the transmission
temperature drop is calculated in real time, and the influences of
multiple factors such as the length of the hose, the total
heat transfer coefficient and the environment temperature are quantified;when the environment temperature changes beyond a threshold value, the gas flow rate is reversely calculated and adjusted, the heat loss is actively compensated, the outlet temperature of the heating
nozzle is stabilized, the consistency of the preheating and the heat preservation of the welding seam is ensured, and the welding defects caused by temperature fluctuation are avoided;through
image analysis, the positions of the welding seam and the heating
nozzle are accurately determined, the actual distance between the two is calculated in combination with the camera parameters, the synchronous movement of the heating nozzle and the welding device and the collaborative control of the preheating before welding and the heat preservation after welding are realized.