Welding feeding device of car threshold assembly

The invention relates to the car body manufacture field and provides a welding feeding device of a car threshold assembly. The welding feeding device of the car threshold assembly comprises a base, a workpiece transfer car, a material shelf, a guiding component used for locating the workpiece transfer car and the material shelf, a locating component used for locating the material shelf and workpiece transfer car, and a feeding robot. The welding feeding device of the car threshold assembly is controlled by a controller; the material shelf having the threshold assembly is transported to the workpiece transfer car and located by the locating component; the workpiece transfer car having the threshold assembly and the material shelf is transported to the base and located by the guiding component; the controller controls the feeding industrial robot for gradually locating the threshold assembly on the car main body on the lower car body welding production line to be welded by the welding robot. The welding feeding device of the car threshold assembly is convenient to adjust and locate before welding operation and the adjusting efficiency is high, and the welding quality is stable.