This machine is a fully integrated servo paperboard feeding, slotting and corner-cutting machine. It integrates the entire process of pre-pressing, wire pressing, slotting and corner-cutting. It has high processing accuracy, low paperboard loss, stable equipment operation, and is suitable for various corrugated box production. Equipped with a servo-free-pressure leading edge adsorption paper feeding structure, the paper feeding is stable and precise; the true air flow and pressure frequency can be adjusted, suitable for different specifications of paper sheets. The left and right paper stoppers and the front guard plate gap can all be adjusted electrically. This enables the single-pass machine to operate at a faster speed.