Arc welding system capable of intelligently locating and feeding back welding line track in real time

The utility model discloses an intelligent locating and welding seam track real-time feedback arc welding system, which comprises a turnover positioner, a robot control cabinet, a main control cabinet, a touch screen and a relay box, the turnover positioner is provided with a clamp for clamping a workpiece to be processed, one side of the turnover positioner is provided with seven robot walking shafts, and the other side of the turnover positioner is provided with four robot walking shafts. A robot walking seven-axis is arranged on the base, a mounting plate is movably arranged on the robot walking seven-axis, a robot is arranged on the mounting plate, an arc welding gun is arranged on the robot, the arc welding gun is connected with welding machines, the number of the welding machines is two, and a welding seam tracking system is arranged on the arc welding gun. According to the utility model, a welding seam locating and tracking system is arranged, so that automatic welding of the robot is realized under th