High-thermal-conductivity mandrel of automatic straight seam welding machine

The utility model discloses a high-thermal-conductivity mandrel of an automatic straight seam welding machine. The mandrel comprises a supporting seat, the cover body is mounted at the top of the supporting seat; the moving mechanism is used for moving the mandrel and comprises a positive and negative rotation motor fixedly connected to the side face of the cover body, a threaded shaft is fixedly connected to an output shaft of the positive and negative rotation motor, and a threaded sleeve is in threaded connection to the threaded shaft; the welding mechanism is used for welding and comprises an electric cylinder fixedly connected to the bottom of the threaded sleeve, and a welding mandrel is installed at the bottom of the electric cylinder through a connecting assembly. When the welding mandrel needs to be disassembled, only the sliding clamping rod needs to be pulled and is separated from the clamping groove, so that the mounting block can be popped out of the mounting seat through the elastic plate under