| 摘要 |
PROBLEM TO BE SOLVED: To enable a wire to be positively positioned in a wire supply path. SOLUTION: A centering unit is provided with a pair of opening and closing members 11 and 12 opposite to each other that interposies a wire supply path R. Each opening and closing member 11 and 12 can be displaced at an opening position for opening a wire supply path R and a closing position for closing it. The opening and closing members 11 and 12 is provided with guide parts 11D and 12D, respectively. The guide parts 11D and 12D surround the full circumference of the wire supply path R at a closing position and partition a surrounding space S1 in which a wire W is put aside on the wire supply part R. Thus, when the wire W is guided by means of the guide parts 11D and 12D, not only can the wire W be positively put aside on the wire supply path R, but also the wire W can be positively positioned on the wire supply path R to restrict positional displacement of the wire R. |
