Nail gun punching needle clutch mechanism

A nail gun punching needle clutch mechanism includes a punching needle driving cam, an inductive optocoupler, a torsion spring, a clutch pawl, and a punching needle. A motor connected to a driving camshaft through a gearbox. A fixed end of the punching needle is fixed on a piston of an accumulator; a movable end of the punching needle is disposed inside the assemble frame body in a sliding manner. The punching needle driving cam and the clutch pawl are disposed on two sides of the punching needle respectively. The punching needle driving cam engages with punching needle teeth through cam pins to drive the punching needle to slide between an initial position and an energy storage position. An inductive optocoupler blocking edge is disposed at an edge of a side, facing the clutch pawl, of the punching needle, and the inductive optocoupler controls start and stop of the motor.