| 摘要 |
<p>A device (10) for cutting roll tape includes a frame (12, 14) and a serrated rotary blade (28) pivotably mounted in the frame, the rotary blade having a plurality of cutting teeth (34) formed by grooves (36) running perpendicular to the axis of the rotary blade, a flat surface (38) cut across the rotary blade, and at least one continuous groove (40, 42) at each end of the serrated rotary blade adjacent the plurality of cutting teeth. A serrated stationary blade (22) is pivotably mounted on the frame, the stationary blade also having a plurality of cutting teeth (44) which are meshable with the cutting teeth (34) on the rotary blade. The stationary blade (22) also hat at least one long tooth (46, 48) at each end of the stationary blade adjacent the plurality of short cutting teeth, the long teeth (46, 48) reaching the tangency of the continuous grooves (40, 42) and riding therein. The cutting teeth (44) are sufficiently shortened to provide the desired clearance at the cutting interface. A biasing element includes a cam (52), a cam following arm (54) and a spring (56), and is arranged to bias the long teeth of the stationary blade into the continuous grooves of the rotary blade.</p> |
