Patent ID: 6782784
Filing Date: 2004-08-31
Classification: B26D,B41J,Y10T

Abstract:
A paper cutting device comprising:a frame (11); a straight fixed cutter (9 ) mounted on the frame; a movable cutter carrier (13) slidably supported on the frame to be moved along the fixed cutter; a movable cutter (10) having a disc shape and rotatably mounted on the carrier, and contacted with the fixed cutter at a side surface thereof; a movable cutter rotating roller (28) rotatably mounted on the movable cutter carrier and resiliently contacted with the movable cutter at a side surface thereof and with the fixed cutter; a carrier feeding endless belt (16) provided in the frame along the fixed cutter, the belt comprising an inside surface having teeth and a peripheral surface without teeth; a fixing projection (16a) integrally formed on the belt; a carrier connecting cylindrical member (17) having a recess (17c) extending in a radial direction and engaged with the fixing projection (16a); a pair of recesses (16b) formed on the fixing projection (16a) and a pair of projections (17a) provided on the carrier connecting cylindrical member (17) and engaged with the recesses (16b), thereby locking the carrier connecting cylindrical member (17) to the projection with respect to the radial direction; a belt driving motor; a cylindrical projection (17b) projected from the carrier connecting cylindrical member (17) and slidably engaged with a vertical elongated hole (13a) formed in the movable cutter carrier, thereby connecting the movable cutter carrier with the endless belt; a power transmitting device for transmitting the power of the motor to the endless belt for driving the endless belt, whereby the movable cutter carrier is moved by the endless belt, and the movable cutter is rotated along the fixed cutter so as to cut a paper sheet mounted on the fixed cutter, and the movable cutter carrier is returned to a home position after the cutting of the paper, wherein the fixing projection (16a) is formed on the outer peripheral surface of the belt, and the cylindrical projection (17b) is projected in the sideward direction of the belt.