Nail column feeding device

The utility model relates to the field of chain production equipment, in particular to a stud feeding device which comprises a receiving mechanism connected to the tail end of a feeding rail and a conveying swing mechanism used for receiving studs from the discharging end of the receiving mechanism and conveying the studs to a welding station. The conveying swing mechanism comprises a rotating shaft, a swing rod connected to the rotating shaft and a supporting part arranged on the swing rod. A bearing groove is formed in the movable end of the swing rod, and the supporting end of the supporting part is arranged below the bearing groove and serves as a bottom support of the bearing groove. The swing rod can rotate along with the rotating shaft, and when the bearing groove is located at the discharging end of the material receiving mechanism, the material receiving mechanism presses the stud into the bearing groove. And when the bearing groove is located on the welding station, the supporting part ejects the na