Welding tool

The utility model relates to the technical field of circuit board series welding, in particular to a welding tool, in the welding tool, a cover plate can move between a ballast position and a release position in the Y direction, the distance between a bottom plate and the cover plate located at the ballast position is a first size, and a containing cavity is formed between the cover plate and the bottom plate; the distance between the bottom plate and the cover plate located at the release position is a second size, the first size is smaller than the second size, and the first size is larger than or equal to the size of the workpiece in the Y direction; the first elastic piece is used for stopping the cover plate at the release position; the pressing assembly can lock the cover plate at the ballasting position; the bearing piece is arranged on the bottom plate and provided with a containing groove extending in the Y direction. The placing groove is used for placing leads. According to the arrangement, manpowe