Patent ID: 7823507
Filing Date: 2010-11-02
Classification: B41F

Abstract:
1. A printing die clamp for clamping a printing die 1 wrapped around an outer periphery of a printing cylinder 2 of a printing press against the outer periphery of the printing cylinder 2 by engaging one end of the printing die 1 with the printing cylinder 2 through an engaging means 18 provided on the printing cylinder 2 , engaging the other end of the printing die 1 with a take-up shaft 3 rotatably mounted in a receiving groove 19 formed in the outer periphery of the printing cylinder 2 , and rotating the take-up shaft 3 , characterized in that the printing cylinder 2 has a tubular printing cylinder shaft 9 in which a control shaft 5 is inserted so as to be coaxial with and rotatable relative to the printing cylinder shaft 9 , and the printing die clamp further comprises a torque transmission mechanism 21 , 22 and 23 for transmitting the rotation of the control shaft 5 to the take-up shaft 3 , a die clamp motor 4 for rotating the control shaft 5 , a first clutch 6 provided in a torque transmission path through which the rotation of the die clamp motor 4 is transmitted to the control shaft 5 for selectively transmitting the rotation of the die clamp motor 4 to the control shaft 5 , and a second clutch 7 for selectively joining and separating the printing cylinder shaft 9 and the control shaft 5 to and from each other.