Barrel body alignment welding device

The utility model discloses a barrel body alignment welding device which comprises a welding platform and a locating mechanism arranged on the welding platform and used for sequential coaxial location of barrel bodies at the ends and a middle barrel body of a female bobbin. The locating mechanism comprises two installing seats assembled on the welding platform and used for installing of the barrel bodies at the ends, and a height adjusting support arranged between the two installing seats and used to support the middle barrel body to enable welding ends of the middle barrel body to respectively correspond to welding ends of the two barrel bodies at the ends, wherein the two installing seats can move in guide mode relative to each other, the two installing seats are respectively provided with two mutually-faced installing faces which are arranged perpendicular to the moving directions of the installing seats, and the two installing faces are respectively provided with installing holes used to be fixedly connected with flange holes of the barrel bodies at the ends through bolts. The barrel body alignment welding device is simple in structure, convenient to operate, and capable of fast achieving location of the barrel bodies at the ends and the middle barrel body, and simultaneously ensures that parallelism degree of flange end faces at two ends of the female bobbin meets welding requirements of the female bobbin.