Electric resistance welding equipment with 3D visual positioning function

The 3D visual positioning electric resistance welding equipment is provided with a machine cabinet, a computer is arranged on the machine cabinet, and a working platform is further arranged in the machine cabinet; a first linear module driven in the left-right direction and a sliding table driven by the first linear module are arranged on the working platform, a second linear module driven in the front-back direction and a workpiece carrying table driven by the second linear module are arranged on the sliding table, and a workpiece jig used for fixing a PCB and a wire rod is arranged on the workpiece carrying table; the machine head is hung above the first linear module, the second linear module and the working platform; the machine head is provided with a third linear module driven in the vertical direction and a sliding plate driven by the third linear module. The sliding plate is provided with a 3D visual camera, a high-frequency automatic spot welding machine and a miniature camera which shoot downwards.