Steel springboard welding device

The utility model discloses a steel springboard welding device, which relates to the technical field of steel springboard processing and comprises a bottom plate, a fixing unit and a butt joint unit. Sliding holes are formed in the front and rear parts of the upper surface of the bottom plate; the fixing unit comprises a fixing disc, first sliding rods, a C-shaped plate, second sliding rods, a mounting plate and a fixing assembly, the first sliding rods are slidably connected into the two sliding holes correspondingly, the upper ends of the two first sliding rods are fixedly connected to the corresponding positions of the lower side surface of the fixing disc correspondingly, and the lower ends of the two first sliding rods penetrate through the sliding holes, extend to the lower side of the bottom plate and are fixedly connected with a limiting plate; a C-shaped plate is arranged on the upper side of the fixing disc, second sliding rods are vertically and fixedly connected to the left portion and the right p