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(11) | EP 2 690 047 A3 |
| (12) | EUROPEAN PATENT APPLICATION |
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| (54) | Yarn winding machine |
| (57) An automatic winder 10 includes a plurality of winding units 11, a plurality of yarn
defect detecting devices 31, and a comparing section 42. The plurality of the winding
units 11 forms a package 18 by unwinding a yarn 16 wound around a yarn supplying bobbin
15. Each of the plurality of the yarn defect detecting devices 31 is mounted in each
of the plurality of the winding units 11, and detects a yarn defect of the yarn 16
wound by each of the winding units 11. A comparing section 42 compares detection results
of the plurality of the yarn defect detecting devices 31. The comparing 42 also calculates
a tendency of occurrence of the yarn defect in accordance with the detection results
of the plurality of the yarn defect detecting devices 31, and compares the tendency
of occurrence with the detection result of the yarn defect detecting device 31.
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