Punching mechanism convenient to install for punching machine

The invention discloses a punching mechanism convenient to install for a punching machine, and relates to the technical field of punching machines, the punching mechanism comprises a punching main body, one side of the punching main body is connected with a lower supporting plate, the lower supporting plate is connected with two nest shafts at equal intervals, a transmission gear is rotatably connected between the nest shafts, and the transmission gear is connected with a rectangular frame and a limiting part; according to the convenient-to-mount punching mechanism for the punching machine, the upper supporting plate and the lower supporting plate are connected to the punching main body, and the motor connected to the lower supporting plate drives the two nest shafts to rotate relatively and reversely, so that the upper supporting plate drives the metal plate to move at multiple angles; according to the metal plate stamping device, a metal plate can be adjusted to a proper position, bent and wrinkled parts on