Plate welding jig

The utility model discloses a plate welding jig which is used for welding two plates. The plate welding jig comprises a welding base and a pressing plate assembly. A welding groove is formed in the surface of the welding base and used for containing two plates to be welded. The pressing plate assembly comprises a hinge seat, at least one first pressing piece and at least one second pressing piece, the first pressing piece and the second pressing piece are arranged on the hinge seat side by side, and the hinge seat is hinged to the welding base and is close to one side of the welding groove in the groove direction. The first pressing piece and the second pressing piece can be correspondingly pressed on the surfaces of the two plates when the hinge base rotates so as to fix the two plates respectively. According to the plate welding jig, the two plates to be welded can be effectively fixed, so that the welding warping phenomenon of the plates is avoided, product demolding can be facilitated, and the welding qua