Automatic cardboard slitting machine is our new research and development doing cardboard slitting. The features of the machine is easy operate and adjust, working stability. It adopts advanced frequency conversion speed regulation mechanism to make the main motor run, stop and speed stable and reliable. Pressure controlled by pneumatic, thin and tick paper could be changed easily. The paperboard mechanical structure has stable performance and equipped with a adjustable plate, it can be used in a variety of working conditions to suit different boards. Machine adopts centralized refueling device and the advanced rotary knife technology to ensure the blade adjust fast and reliable. Using cast iron for the main body to keep stable of the machine.