Patent ID: 6065519
Filing Date: 2000-05-23
Classification: B65H,Y10T

Abstract:
An automatic drawing and cutting device for an adhesive tape dispenser, the adhesive tape dispenser comprising:a case body for containing an adhesive tape therein, the case body having a cover which is detachably mounted, an outlet through which an adhesive tape is passed;drawing means for drawing the adhesive tape from the adhesive tape dispenser into a desired length; andcutting means for cutting the adhesive tape drawn by the drawing means,characterized in that,the drawing means includes a pair of latch drums having a latch gear on their inner peripherals respectively and a shaft integrally formed at a middle part thereof;a latch handle pivotally mounted on the shaft of the latch drums and having a pin formed integrally;a push latch pivotally mounted on the latch handle by the pin of the latch handle, the push latch being engaged with one of the teeth of the latch gear;a first and a second brackets positioned between the latch drums, each end part of the brackets being mounted in the case body by pin joint;a holding latch pivotally mounted by a pin of the second bracket in opposite direction of the push latch and engaged with one of the teeth of the latch gear to prevent a contrary rotation of the latch drums;a first coil spring located on the shaft of the latch drums, the first coil spring resiliently supporting the latch handle and the push latch;a second coil spring positioned on a pin of the second bracket and resiliently supporting the holding latch; anda pair of rollers connected with the latch drums by a pair of belts, each of the belts surrounding circumferences of the latch drums and the rollers, andthe cutting means includes a sliding member slidingly positioned on an upper part of the case body and having a protrusion;a movable bar movable by forward sliding of the sliding member and having a projection part, the movable bar pivotally mounted by a first hinge of the case body, a top end part of the movable bar being engaged with the protrusion of the sliding member;a lever pivotally mounted by a second hinge of the case body and pressed down by pressure of the projection part of the movable bar moving forward;a cutter detachably mounted at a front end of the lever; anda holder for supporting the cutter and holding the adhesive tape during cutting operation, the holder positioned at the front end of the lever having the cutter and connected to the lever by a pin-shaped spring, wherein when the sliding member is pulled forward, the lever is pressed down by the pressure of the movable bar moving forward and the cutter connected with the lever is lowered to cut the adhesive tape.