| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a draft machine in a fore spinning process, having an arm in which pressure parts for pressing top rollers to a side of bottom rollers are supported by a common support part, and capable of cleaning the top rollers by sucking action with a simpler structure than a conventional cleaning machine. <P>SOLUTION: A draft machine 11 comprises: support arms 23-26 for supporting top rollers 15-18, the support arms 23-26 having suction holes 23a-26a formed at positions corresponding to the top rollers 15-18 so as to vertically penetrate through main bodies of the arms; top roller pressure units 11 provided on both sides across the suction holes 23a-26a; and a suction duct 27 having suction ports 27a-27d for exerting sucking action on the suction holes 23a-26a from upper sides of the holes when the support arms 23-26 are arranged in a motion position, the suction duct being provided in a movable manner between an action position in which the suction ports 27a-27d face the suction holes 23a-26a to exert sucking action on the suction holes 23a-26a and a retreat position in which the rotation of the support arms 23-26 is not hindered. <P>COPYRIGHT: (C)2012,JPO&INPIT |
