This coil nail machine is the automatic welding equipment with high frequency and high speed. Place the iron nail in hopper to lay off automatically, the vibration disc arranges the order of nail to enter into the welding and form line-order nails, and then soak nail into paint for rust prevention automatically, dry and count automatically to roll into roll-shape(flat-topped type and pagoda type).Automatically cut off according to the set number of each roll, the finish products are packaged by operators. This equipment adopts high technology products of imported programmable controller and touch-sensitive graphic display etc., conducts automatic detection to process flows of shortage leakage counting and cutting etc. in system, to make the whole system correct reliable and quality stable.