Low tension wire transfer system

摘要: A system for maintaining a predetermined tension of wire (22) has rotatable supply spool (24), motor-driven take-up (12), motor- drive feed (26). the is wound around (24) and also attached to (12). The passes partially (26) pulley (32) or guide which pivot arm (34). (34) positioned between spool. frictional layer disposed outer circumferential surface (26), prevent from sliding across elongated its free end agains wire. pivots in response differences speed spools (24,12). motion sensor (40,62,64) detects generates control signal response. electrically conducted stepper motor (74). connected turn establish rotation thereby match with speed. can be weighted oriented at an angle different rest position desired on