Welding gun moving structure of submerged arc welding machine

The utility model discloses a welding gun moving structure of a submerged arc welding machine, which is characterized in that a driving motor is fixedly arranged on one side of a fixed plate, a belt pulley I is fixedly arranged on the output end of the driving motor, a threaded rod is fixedly connected to the end face of the belt pulley I, a threaded block is arranged on the surface of the threaded rod in a threaded manner, and a sliding rail is fixedly connected to the end face of the threaded block; the driving motor is started to drive the threaded rod to rotate, so that the threaded block drives the sliding rail to transversely move, then the welding gun on the sliding rail is driven to transversely move, the first belt wheel rotates, the second belt wheel is driven to rotate through the belt, and the two-way screw rotates to drive the two threaded plates to be close to or away from each other; and then the movable plate is pushed to move longitudinally through the two hinge rods, so that the movable plat