| 摘要 |
In the two-for-one twister, two overfeed rollers (4,5) with a gap between them are located between the twisting spindle (1) and the winder (6,7). Both overfeed rollers (4,5) are powered separately through their drive shafts (13,14). Relative speeds between the feed surfaces of the overfeed rollers (4,5) and the yarn (2) are separately adjusted at each overfeed roller (4,5). At the leading overfeed roller (5), in the direction of yarn (2) travel, the angle (11) round the roller (5) in the yarn (2) path is greater than the angle (10) round the trailing roller (4) in the yarn (2) path. ADVANTAGE - Mechanism reduces the tension on the wound yarn below 2 cN and possibly below 1 cN, to give wound bobbins suitable for yarn dyeing processes.
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