Yarn Winding Machine

Abstract: An automatic winder includes a monitoring section 16, a yarn splicing section 14, a winding section 18, and a unit control section 51. The monitoring section 16 monitors a state of the yarn 20. The yarn splicing section 14 is arranged upstream of the monitoring section 16 in a running direction of the yarn 20, and splices the yarn 20 on a tray 5 side and the yarn 20 on a package 30 side. The winding section 18 winds the yarn 20 to form a package 30. The monitoring section 16 includes at least one of an optical sensor 16a and a capacitance sensor 16b. The optical sensor 16a detects the thickness of the yarn 20. The capacitance sensor 16b detects the mass of the yarn 20. The unit control section 51 determines the presence or absence of the core fiber in the seam region, based on a detection result of the monitoring section 16 for a seam region where the yarn is spliced by the yarn splicing section 14. Fig. 2

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