| 摘要 |
Disclosed is an improved wire measuring apparatus comprising a wire guide roller mechanism 3 and a looper 5 to push down a fed wire to a descending position, thereby measuring the length of wire in terms of descending position at which the wire is held by the looper 5. The wire guide roller mechanism 3 comprises a frame, first, second and third guide rollers 6, 7 and 8 rotatably fixed to the frame. The first and third guide rollers 6 and 8 rotate in same direction, and the second guide roller 7 rotates in an opposite direction both in pulling the wire forward and backward. Also, the whole guide roller arrangement is designed to incline and follow the increasing or decreasing inclination of wire length ahead of the third guide roller. Thus, the wire curling inclination can be reduced from the measured wire. The second guide roller acts to reduce the effect of the wires bending around the first guide roller and the wires extend tangentially from the third guide roller.
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