Die cutting device for packaging paper processing

The utility model relates to the technical field of die cutting devices, in particular to a die cutting device for packaging paper processing. The device comprises a base, a shell is fixedly connected to the upper surface of the base, supporting plates are fixedly connected to the two sides of the shell respectively, a conveying belt is installed in the shell, a die-cutting machine is fixedly connected to the sides, close to each other, of the two supporting plates, and limiting structures are arranged on the two sides of the shell. The limiting structure comprises two connecting plates, the two connecting plates are installed on the shell, the inner walls of the connecting plates are in threaded connection with threaded rods, the sides, away from the conveying belt, of the connecting plates are rotationally connected with threaded rings, the threaded rings are in threaded connection with the threaded rods, and two plug pins slidably penetrate through the sides, close to the threaded rings, of the connecting