Cutting device for packaging box

The utility model discloses a packing box cutting device, which relates to the technical field of cutting devices and comprises a bottom plate, a frame is arranged on the upper side of the bottom plate, and two hydraulic cylinders are arranged on the upper side of the frame. The lower end of the hydraulic cylinder penetrates through the frame body to be connected with a movable plate located in the frame body, a supporting cylinder is arranged on the lower side of the movable plate, supporting rods are arranged on the supporting cylinder, the number of the supporting rods is four, and the supporting rods are arranged at 90 degrees adjacent to each other. The hydraulic cylinder drives the blade to move, so that raw materials of the packaging box can be quickly cut, and the processing efficiency of the packaging box is improved; by arranging the supporting rod, the first U-shaped block, the supporting bearing and the second U-shaped block, the distance between the blades and the inclination angle of the blades