Opening and closing mechanism for paper transferring gripper

The utility model discloses an opening and closing mechanism for a paper transferring gripper. The opening and closing mechanism comprises an eccentric sleeve, a connection rod and swing arms, wherein the eccentric sleeve is mounted on a wall board; the center of a paper transferring shaft and an assembling inner hole in the eccentric sleeve are concentric; a piston rod on a servo electric cylinder is connected with the connection rod; the connection rod is connected with one swing arm which is provided with a paper transferring gripper opening cam; a roller wheel is mounted on a shaft of the other swing arm which is fixed with the wall board by the shaft. According to the technical scheme of the utility model, the servo electric cylinder is adopted; the piston rod of the electric cylinder is used for driving the connection rod and the swing arm, namely the paper transferring gripper opening cam, to swing; the swinging of the paper transferring gripper opening cam realizes the change of high-point and low-poi