| 摘要 |
<p>A wire-feeding apparatus (10) for the controlled feeding of wire (18) comprising a set of two opposed aligned rollers (54, 56), one of said rollers (54) being a driven feed roller and the other of said rollers (56) being a pinch roller, both of said rollers (54. 56) having indented V-shaped peripheral cross section (78, 88), said peripheral cross section (78) of said feed roller (54) having a relatively sharp obtuse angle, said peripheral cross section (88) of said pinch roller (56) having a relatively shallow obtuse angle, said angles accommodating a wide range of wire diameters (18a to 18f), said peripheral cross section (78) of said feed roller (54) having a pair of sloped walls (80), said walls (80) being serrated (82) to facilitate gripping said wire (18), and resilient means (66) urging said peripheral edges of said rollers (54, 56) together for gripping said wire (18) between them. </p> |
