Intelligent assembly line welding practical training system

The invention relates to the technical field of practical training electric welding devices, in particular to an intelligent assembly line welding practical training system. Comprising a machine body, a glass screen and a baffle are fixedly installed on the top face of the machine body, a negative pressure bearing assembly, a welding slag cleaning part and a smoke exhaust pipe are sequentially installed in the machine body from top to bottom, two symmetrically-arranged electric welding machines are installed in the machine body, and electric welding parts are connected to ports of the two electric welding machines and comprise welding shells; a positive electrode cable is installed at the bottom of the welding shell, and the inner wall of the welding shell is rotationally connected with a gun barrel driven by a transposition motor. The welding rod automatic replacement device has the beneficial effects that through the arrangement of the transfer cavity, the gun barrel, the feeding plate and other structures