| 摘要 |
<p>A weft yarn measuring method for controlling the picking device (1) of a fluid jet loom to pick a weft yarn (2) of a predetermined length in each picking cycle. In releasing loops of the weft yarn (2) wound on the storage drum (6) of the pickig device (1), the retaining pin (7) of the picking device (1) is controlled so that only one of the loops of the weft yarn (2) is unwound at each reciprocation of the retaining pin (7), and the reciprocation of the retaining pin (7) is repeated a plurality of times to unwind accurately a plurality of loops of the weft yarn (2) corresponding to a predetermined length of the weft yarn (2) necessary for one picking cycle.</p> |
