| 摘要 |
PURPOSE:To enable the sure holding of a yarn end and the automatic doffing of bobbin without using a bunch winding of the yarn on a bobbin, and to facilitate the picking up of the yarn end in the post-treatment step, by using a doffing machine furnished with a specific bobbin holding cylinder, etc. CONSTITUTION:When a desired amount of yarn is wound on a bobbin attached to the spindle 13 of a fine spinning frame 11, the rotation of the spindle 13 is stopped without carrying out the bunch winding, etc. of the yarn. The wound yarn is capped with the bobbin-holding cylinder 45 of the doffing machine 34, the elastic air bag 46 in the cylinder is expanded to hold the wound yarn, and the yarn is transferred to the peg 29 on the conveyor belt 24. The bobbin-holding cylinder 45 is furnished with a longitudinal slit 44, and the wound yarn can be transferred without cutting the yarn by passing the yarn extended from the traveller to the wound yarn by passing the yarn extended from the traveller to the wound yarn through the slit 44. The yarn is cut with the cutter 19 placed under the spindle 13. The yarn end of the traveller side is clamped with the yarn clamping disk 17 placed near the cutter 19, and the yarn end of the wound side is dangled. Air is sucked through the bottom of the bobbin of the wound yarn, and the yarn end is passed through the bobbin hole and clamped.
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