Welding device

The utility model discloses a welding device which comprises a bottom plate used for placing a welding mother plate and further comprises a butt joint mechanism which is arranged on the bottom plate and used for enabling a plurality of reinforcing plates to be in butt joint and fixed with the welding mother plate at the same time, and the butt joint mechanism comprises two sliding blocks which are symmetrically arranged and connected to the bottom plate in a sliding mode. Two first butt joint blocks which are symmetrically arranged are connected between the two sliding blocks in a sliding mode, and a plurality of second butt joint blocks are connected between the two first butt joint blocks in a sliding mode. Through the arrangement of the butt joint mechanism, under the driving action of the driving mechanism and the adjusting action of the adjusting mechanism, all the reinforcing plates are adjusted at equal intervals and are in butt joint and fixation with the mother plate at the same time, the reinforcing