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(11) | EP 2 078 690 A3 |
| (12) | EUROPEAN PATENT APPLICATION |
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| (54) | Traverse drum and yarn winding device using the same |
| (57) A traverse drum and a yarn winding device using the same capable of making it difficult
to generate stages on both end surfaces of a package and manufacturing the package
presenting a smart appearance even if a traverse groove is switched over to another
traverse groove providing a different number of wind so as to prevent ribbon winding. MEANS FOR SETTLEMENT Traverse grooves (21) are formed to provide different numbers of wind from a start point A that is a first end to a turn-around point (D) that is a second end. The traverse grooves (21) formed to provide the different numbers of wind are a 3-wind outward route and a 2-wind outward route, respectively. The different numbers of wind are switched by switching the traverse grooves (21) guiding the yarn (11) at a branching point (P). If a direction indicated by an arrow in a drawing is assumed as a traveling direction, the branching point (P) is set at a position forward of the start position (A) substantially by a half round. A merging point (Q) is set at a position backward of the turn-around point (D) substantially by a three-fourths round. |