| 摘要 |
<p>A rotary mechanism for laying down strands of fibres, esp. draw frame or carding engine rovings, in cans, has a rotating dish and a pair of calender rollers. These are positioned eccentrically to the dish so that the axis of rotation of each roller lies near enough in a plane to which the axis of rotation of the dish is at right angles. The axes of the rollers are arranged at right angles to the line of action of the centrifugal forces acting on the strand of fibres passing through, as the dish rotates, and the axis of the one roller is more-over offset to the axis of the other which lies nearer to the axis of the dish. At the high operating speeds now used, coilers in which the feed rollers are aligned radially to the axis of the dish, are subjected to centrifugal forces tending to throw the roving outwards and cause clogging of the mechanism leading to stoppages. Moreover, in the old design, since the delivery outlet must be vertical, the strand of fibres is diverted twice quite sharply.</p> |
