The punching device of a fully automatic ultra-high speed bag making machine relates to the technical field of bag making machines. Including a booster cylinder and a punching plate support seat; two booster cylinder fixing plates are installed on the upper fixed beam of the bag making machine, two booster cylinders are installed on the booster cylinder fixing plate; the lower end of the booster cylinder piston rod is installed The punching knife connection seat, the punching knife connecting plate is installed under the punching knife connecting seat, the punching knife board connecting seat is installed under the punching knife connecting plate, the punching knife board is installed at the lower end of the punching knife board connecting seat; the punching board support seat is located The punching knife board is directly below; the plastic bag making machine is provided with an adjusting support seat above the lower fixed beam, the upper end of the adjusting screw passes through the adjusting support seat, and the lower end is connected to the lower fixed beam; the bearing and plane bearing are installed on the adjusting support seat, and the punching board supports The seat is installed on a plane bearing. This device solves the problems that similar equipment can not adjust the height, the adjustment operation is inconvenient, and the punched bag is not flat, the punch depth is different, and the support plate cannot be rotated, and the punching board has a short service life.
