| 摘要 |
PROBLEM TO BE SOLVED: To provide a bobbin thread feeder easily adjusting the feeding amount of the bobbin thread. SOLUTION: This bobbin thread feeder 2 feeds the bobbin thread I from a bobbin thread supply source to a looper. This bobbin thread feeder 2 is provided with a right thread guide guiding and passing the bobbin thread I fed from the bobbin thread supply source, a left thread guide 5 guiding and passing the bobbin thread I passing through the right thread guide 6 and feeding it to the looper, and a bobbin thread cam 4 rotating and allowing the outer circumferential surface to interfere the bobbin thread I between the right thread guide 6 and the left thread guide 5 and tensing or loosening the bobbin thread I at a prescribed timing. The right thread guide 6 is provided with a thread guide hole part 62a guiding and passing the bobbin thread I fed from the bobbin thread supply source, a thread tension unit 7 clamping the bobbin thread I passing through the thread guide hole part 62a and adjusting its tension, and a thread guide hole 63a guiding and passing the thread passing through the thread tension unit 7. This right thread guide 6 is integrally and relatively movably provided relative to the bobbin thread cam 4. COPYRIGHT: (C)2004,JPO
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