Continuous welding swing arc mechanism

The utility model discloses a continuous welding swing arc mechanism which comprises a mounting table, a bottom plate is arranged in the middle of the top of the mounting table, a second hydraulic cylinder is fixedly connected to the middle of the top of the bottom plate, and second limiting seats are fixedly connected to the four corners of the top of the second hydraulic cylinder. Second rotating blocks are arranged between the adjacent sides of the front and back opposite second limiting seats correspondingly, first hydraulic cylinders are fixedly connected to the middles of the tops of the second rotating blocks correspondingly, and first rotating blocks are fixedly connected to the upper ends of the first hydraulic cylinders and the upper ends of the second hydraulic cylinders correspondingly. According to the automatic welding device, firstly, the lead screw motor is started to enable the sliding block of the bottom plate to move, so that the relative position of the welding position and the welding end