Automotive three-way catalyst system welding device and automotive welding equipment

The invention relates to an automotive three-way catalyst system welding device and automotive welding equipment. The automotive three-way catalyst system welding device comprises a positioner system,a clamp beam system, a tooling clamp system and a robot welding system, wherein the positioner system comprises a driving head and a driven head; the clamp beam system comprises a clamp beam, toolingclamp quick-changing mechanisms and two clamp beam quick-connecting mechanisms; the two clamp beam quick-connecting mechanisms are correspondingly connected with the driving head and the driven headof the positioner system; the clamp beam is connected with the positioner system through the two clamp beam quick-connecting mechanisms; the positioner system is used for controlling the clamp beam tomove by 360 degrees along the axis where the driving head and the driven are positioned; and the tooling clamp system is mounted on the clamp beam through the tooling clamp quick-changing mechanisms,comprises an air inlet flang