Vacuum side pull type side-lay will not cause the graphic side print damaged, dirty printed side and graphics; one body style variable pull&push side-lay; pull or push accurate positioning, positioning stroke long, positioning fast, convenient adjustment; Photoelectric detection system for real-time monitoring of the printed substrate in place situation, reduce the printing waste rate. The most advantage of this type pneumatic side-lay is the largest contact between micro suction board and substrate, it is different from the ball type side-lay which focus the force at one point, so that avoid the print graphics to be damaged or dirty on double side printed substrate which always happened by ball type side-lay, and operator can be informed if the substrate is not in place by detected, make the operation more convenient.