目的 利用机构实现取纸机在高速取纸时无纸间摩擦的目的。方法 明确无纸间摩擦情况下取纸吸头的姿态和动作要求。利用凸轮连杆机构的运动特点，并考虑高速运动中凸轮机构运动规律要求，设计凸轮五杆机构取纸机构。利用Adams仿真验证机构运动情况。结果 通过分析凸轮五杆机构连杆上两点的位移变化，获取作为吸头的凸轮五杆机构的连杆运动情况。通过机构的运动仿真分析可知，吸头在取纸时以垂直于纸面的姿态作间歇平动，实现了预定目标要求。结论 利用凸轮五杆机构能够很好地实现高速、无纸间摩擦取纸。

The work aims to adopt mechanism to ensure no friction between paper on high-speed paper fetching machine. The posture and motion requirements of the suction head on the condition of non-friction between papers were defined. By applying he motion characteristics of the cam linkage mechanism and considering the requirements of the motion law of the cam mechanism in high-speed movement, the paper fetching mechanism with cam five-bar was designed. The motion of the mechanism was verified by Adams simulation. By analyzing the displacement changes of two points on linkage of cam five-bar mechanism, the movement of the linkage as suction head was obtained. Through the motion simulation analysis of the mechanism, the suction head made intermittent linear motion with posture perpendicular to paper surface during fetching paper, thus achieving the predetermined target requirements. The cam five-bar mechanism can well meet the requirements of high-speed and non-friction between papers during fetching paper.