Printing paperboard stacking frame

The utility model discloses a printing paperboard stacking frame which comprises a square paperboard platform and three limiting plates extending upwards from the periphery of the paperboard platform,a patting and aligning mechanism is arranged on the limiting plates, a paperboard stacking cavity is defined by the paperboard platform and the limiting plates, and a walking device is arranged at the bottom of the paperboard platform. The beating and aligning mechanism comprises a movable rod, a beating and aligning plate and an air cylinder with a reciprocating stroke. One end of the movable rod is connected with the patting and aligning plate; wherein one end of the beating plate is connected with the paperboard platform, the other end of the beating plate is connected with the air cylinder, the air cylinder is fixedly arranged on the limiting plate, the beating plate is located in the paperboard stacking cavity, the lower end face of the beating plate is flush with the upper surface of the paperboard platform