Impeller wax mold welding device

The utility model relates to the technical field of investment casting wax piece welding, in particular to an impeller wax piece welding device which is characterized in that a base is provided with a sliding groove in the radial direction, a support fixing hole, a wax piece axial positioning face, an indexing tray fixing threaded hole, an indexing tray radial positioning conical face and an indexing tray axial positioning plane; a sliding groove is formed in the base, an adjusting mechanism is arranged on the sliding groove in the radial direction, the indexing tray is arranged on the base, a first air flow control movable block, a second air flow control movable block and a movable block positioning groove are arranged on the indexing tray, and a positioning face and a sliding reference face matched with the first air flow control movable block and the second air flow control movable block are arranged on one side of the movable block positioning groove. By improving the impeller wax mold welding device, th