| 摘要 |
PROBLEM TO BE SOLVED: To continuously treat a manufacturing processes from an end part formation to a U-shaped bending formation of a wire with a multi-stage former. SOLUTION: In the multi-stage former, dies 4-6 and punches 4a-6a in processes from a first process to a process before last, are constituted so as to have the forming faces smoothly and gradually press-formed to at least each end portional face of the wire W. The die 7 and the punch 7a at the last process are constituted so as to have the forming faces 11, 12 press-forming into the U-shaped wire W parallel supported at the position just before the die 7 with a chuck 20 moved to go and back between the die 6 at the process before last and the die 7 at the last process. The chucks 20 are constituted by parallel disposing in the front and the rear parts at just before position of the axial center of the die 6 so as to support by inserting respective end parts of the wire W pushed out with a pushing-out pin 10, and arrange one pair of fingers 35 disposing the respective end parts of the wire W at right and left parts at just before position of the axial center of the die 7 by rotating 90°angle on the same horizontal surface during moving the going-way to the die 7 so as to forcedly separate from the fingers 35 with the pushing of the punch 7a, when the wire W advances between the fingers 35, parallel supported with the fingers 35 at the just before position of the die 7. COPYRIGHT: (C)2008,JPO&INPIT
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