| 摘要 |
Provided is a yarn winding machine configured to detect a core tube length of a yarn supply bobbin to thereby correctly obtain the amount of yam wound on the yam supply bobbin. In a yam supply bobbin holder, a yam supply bobbin having a yam wound on a core tube thereof is set. A winding part winds, into a package, the yam drawn out from the yam supply bobbin. A core tube detection sensor detects a core tube length of the yam supply bobbin set in the yam supply bobbin holder. A stepping motor is configured to move the core tube detection sensor in a longitudinal direction of the core tube and to control the amount of movement thereof. A calculation part calculates the core tube length based on the amount of movement of the core tube detection sensor moved by the stepping motor. |
