Nail feeding mechanism special for numerical control stud nail planting welding gun

The utility model discloses a special nail feeding mechanism for a numerical control stud nail planting welding gun, which comprises a transmission assembly and a nail feeding assembly, the nail feeding assembly comprises a main nail feeding pipe, a driven nail feeding pipe and an elastic sheet, the driven nail feeding pipe is arranged at the tail end of the main nail feeding pipe, and the elastic sheet is arranged at the lower part of the main nail feeding pipe and is in contact with the outer side wall of the driven nail feeding pipe; the transmission assembly comprises an air cylinder installed in the welding gun body, a gun nozzle fixing piece installed at the tail end of the air cylinder and a chuck installed at the tail end of the gun nozzle fixing piece, and an opening with the bottom being a diagonal plane is formed in the side, close to the driven nail feeding pipe, of the gun nozzle fixing piece. The tail end of the driven nail feeding pipe is inserted into the cavity of the gun nozzle fixing piece