| 摘要 |
Wire (16) is contacted and driven at the nip of two rollers (1,4). One roller (1) is driven and mounted on a pivotable arm (5) which also carries a coupling pulley (2) rotatably driven by an endless flexible element (3) whose tension causes the driven roller (1) to apply load to the wire (16). The pivot axis (6) is parallel to the wire travel direction. The coupling pulley (2) and driven roller (1) are on a common axis perpendicular to the pivot axis and at different distances from it. The variation in belt tension thus also adjusts the force applied to the wire by the driven roller. |
