| 摘要 |
PROBLEM TO BE SOLVED: To draw out a wire smoothly and besides at high speed by making a support arm, which has a tip provided with a rotatable pulley, and an auxiliary arm, whose tip is attached to the middle of the support arm, out of elastic member having different elastic moduli. SOLUTION: If a covered wire S is drawn out one or two turns when drawing out a covered wire S from a coil C, the tip of a support arm 3 is pulled down by the downward strong load added to the pulley 2 of a wire feeder 1, and the support arm 3 is bent largely. At this time, since the support arm 3 has elasticity, this makes it linear by pulling up the covered wire S strongly upward, seeking to return to the former posture. Furthermore, through the support arm 3 seeks to vibrate the tip by the force of return, the vibration property does not conform to that of an auxiliary arm 6, since the middle is supported by the auxiliary arm 6 different in elastic modulus, so it can not maintain the vibration state, and the vibration is suppressed, and stable pull out of the covered wire can be made. |
