| 摘要 |
Apparatus and method for concurrently tying cord about two sets of end turn portions of coils projecting beyond each side surface of a magnetic core. The core having coils is supported in a holder assembly and periodically indexed through an angular path of travel by an assembly having adjustable arms. Each set of end turn portions is tied with cord in a stitch pattern having double loops in each stitch interval by a tying unit having a cord feeder member, mounted for combined longitudinally swinging and turning motion, which passes over the associated set of end turn portions and cooperates with an elongated hook member, mounted for combined rectilinear and oscillatory motion. One tying unit is carried for preselected movement by a movable platform, and a core-surface and tying unit position-sensing and controlling unit automatically determines the relative positions of the one tying unit with respect to an adjacent region of an associated core surface. Thus, desirable stitch patterns are simultaneously, quickly, and efficiently provided for the two sets of end turn portions. Also, dimensional variations in cores of a given size as well as different sized and types of cores are compensated for in an effective and economical manner.
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