The utility model discloses a
pipe flange automatic
argon arc welding machine, including frame, turnover subassembly, horizontal movement linear module and
welding torch head, one side of frame is provided with mounting seat, and one end of mounting seat is provided with turnover subassembly, and turnover subassembly includes
servo motor, planetary
reducer and rotating box, one end fixed with
servo motor of mounting seat is connected with planetary
reducer of
servo motor's output shaft, and the output shaft of planetary
reducer is connected with rotating box, one end of rotating box is provided with rotating subassembly, and rotating subassembly includes reduction motor, driving gear, gear ring and rotating seat, the inside fixed with reduction motor of rotating box is connected with driving gear of reduction motor's output shaft, the utility model discloses the setting of rotating subassembly, when utilizing three jaw chuck to hold the end of
flange or pipeline, can start reduction motor, make it through driving gear and gear ring drive rotating seat rotation, can carry out turnover to
pipe flange class workpiece to the
welding range of expansion.