Conveying roller shaft head mounting and welding device

The utility model relates to the technical field of welding, in particular to a conveying roller shaft head installing and welding device which comprises a bottom plate, adjusting screw rods are rotationally connected to the left end and the right end of a fixing block, two adjusting plates are arranged on the two adjusting screw rods in a threaded and sleeved mode, and two adjusting motors are installed on the bottom plate. The output ends of the two adjusting motors and the other ends of the two adjusting screw rods are fixedly connected with transmission wheels, the two transmission wheels located on the same side are in transmission connection through a transmission belt, the top end of the adjusting plate is fixedly connected with two lifting electric cylinders, a shaft head electric cylinder and a shaft body electric cylinder, and a motor plate is fixedly connected between the two lifting electric cylinders. A rotating motor is installed on the motor plate, a clamping frame is fixedly connected to the l