| 摘要 |
A clamping-effective yarn cylinder comprises a yarn cylinder having a trench about 350 degrees around an outer periphery of the yarn cylinder; each of two ends of the trench being formed with a cambered wall; the trench being divided into four sections so that four molds can enter into the trench from the four sections which are divided by four radius lines; each section having teeth which are tilt to different directions so as to enhance the force for clamping the yarns; and the teeth for each section extending from two lateral walls of the section and having identical orientation; extensions of the teeth of adjacent sections will intersect to one another so that yarns can be captured effectively in the trench.
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