Pneumatic punching machine

The utility model relates to a pneumatic punching machine which comprises a driving mechanism and a swinging mechanism which is located above the driving mechanism and is driven by the driving mechanism to reciprocate up and down, a punching mechanism is arranged on one side of the swinging mechanism, and the punching mechanism is driven by the swinging mechanism to complete punching. The driving mechanism comprises an upper cover, a lower cover and a cylinder barrel located between the upper cover and the lower cover, an air outlet hole and an air inlet hole are formed in the upper cover and the lower cover correspondingly and used for air exhausting and air feeding of the cylinder barrel, and then the piston is driven to drive a piston rod connected with the piston to reciprocate up and down; the swing mechanism comprises a fork-shaped piece and a connecting block connected with the fork-shaped piece through a fork-shaped piece pin shaft, the lower end of the fork-shaped piece is connected with a piston rod