| Sheet transfer mechanism is a key part of an offset press. Its performance will affect the speed of printing and the quality of printing product directly. How to keep the mechanical performance steadily at high speed is a very important aspect in press amelioration design. This paper analyzed and designed the eccentric swinging sheet transfer mechanism which was produced by Xin Ji Company Ltd. in He Nan province based on its requirement.This paper includes the key points in the listed below:(1) The regular pattern of sheet transfer gripper is selected. The sheet transfer mechanism is analyzed by using complex vector method. Foundation synthesis of kinematics and dynamics is provided.(2)The outline curve and radius of curvature of the cam is Designed. Pressure angle is checked synchronously.(3)The geostatic analysis to the sheet transfer is finished, and the alteration of stress in every pivot and the moment of force in two input ends in a period's time are acquired.(4)Model of sheet transfer mechanism in according to lumped parameter model is built. The dynamic angular displacement, angular velocity and angular acceleration of the output system of the mechanism are acquired.(5)3D model is built in Pro/E, and the motion of the mechanism is analyzed & simulated.(6)Parameterized software is programmed under Matlab. The modules of the software can function based on the data inputted by user. It's convenient for the research and development of the mechanism.The study of the subject based on practicality, acquired new cam outline which can work in high speed adaptively and designed parameterized software. It provided a new method for the research and improvement of sheet transfer mechanism.
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