GAME MACHINE MANUFACTURING NAILING DEVICE

PROBLEM TO BE SOLVED: To open and close a nail holder arm to prevent the occurrence of a nailing failure. SOLUTION: A nail holder arm firmly holds the shaft part 37a of a nail 37 in the nipping state by a close side electromagnet 8 from nail feed to nailing, so that the nail 37 can be driven to a game board without buckling it. When the nail holder arm is retreated from the nailing to the nail receiving position side, it is opened in the non-nipping state of the shaft part 37a of the nail 37 by an open side electromagnet 7, and the opening of the nail holder arm is fixed to a prescribed width, so that the nail holder arm is never collided to an adjacent existing nail, and the curving of the existing nail can also be prevented.