Multi-station sealing shell butt welding device

The utility model discloses a multi-station sealing shell butt welding device. The multi-station sealing shell butt welding device comprises a platform car, a portal frame, a welding power source and an electrical control cabinet, wherein two guide tracks and a plurality of stations are arranged on the platform car; the two guide tracks are parallel to each other; the stations are positioned between the two guide tracks and are parallel to the guide tracks; a spindle box is arranged at an end of each station; and the portal frame is arranged on the two guide tracks and is provided with an AVC (automatic volume control) module capable of sliding along the portal frame. By using the multi-station sealing shell butt welding device, a plurality of workpieces to be welded can be arranged on the stations, and are welded according to a certain sequence; when one of the workpieces is welded, the rest workpieces can be detected and ground correspondingly; the workpieces are not required to be detached, and can be mach