| 摘要 |
PURPOSE:To make vibrations in a bobbin holder at the time of automatic yarn changing restrainable as well as to aim at stabilization in a yarn changeability, by making characteristic frequence in the bobbin holder so as to differ in each bobbin holder at the winding side and the stand-by side. CONSTITUTION:As being attached to a revolving drum 9 with each of piece numbers of O-rings 12a and 12b supporting bearings 10b and 10c altered, bobbin holders 1 and 4 differ in supporting conditions in spite of the same structure, so that a difference in characteristic frequency comes forth there. For this reason, even if these two holders 1 and 14 are operated at high speed almost the same revolution via a drum 9, respective vibration systems are different so that vibrations of the holder 14 at the winding side and that of the holder 1 at the stand-by side are not affected with each other. That is to say, these holders 1 and 14 in rotation at high speed as projected from the drum 9 act like being operated independently each. Therefore, these bobbin holders at both winding and stand-by sides are stably made rotatable at high speed, thus yarn changeability also becomes so favorable enough.
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