(19)
(11) EP 2 105 399 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
06.10.2010 Bulletin 2010/40

(43) Date of publication A2:
30.09.2009 Bulletin 2009/40

(21) Application number: 09154191.2

(22) Date of filing: 03.03.2009
(51) International Patent Classification (IPC): 
B65H 54/32(2006.01)
 B65H 54/28(2006.01)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK TR
Designated Extension States:
AL BA RS

(30) Priority: 24.03.2008 JP 2008075396

(71) Applicant: Murata Machinery, Ltd.
Kyoto-shi, Kyoto 601-8326 (JP)

(72) Inventor:
  • Muta, Katsufumi
    Kyoto Kyoto 612-8686 (JP)

(74) Representative: Vogeser, Werner 
Hansmann & Vogeser Patent- und Rechtsanwälte Albert-Rosshaupter-Strasse 65
81369 München
81369 München (DE)

   


(54) Yarn Winding Device and Yarn Winding Method


(57) An automatic winder includes a package driving motor (41) a traverse driving motor (45), and a traverse width reducing section (63). The traverse driving motor reciprocates a traverse guide (11) traversing a yarn (20) being wound around a winding bobbin (22) rotated by the package driving motor. The traverse width reducing section has a reduced-width constant mode and a reduced-width changing mode. In the reduced-width constant mode, the traverse width reducing section controls the traverse driving motor so that during the accelerating winding period, traversing is performed with a constant reduced traverse width that is smaller than a target traverse width based on an initial traverse width set via a setting device. In the reduced-width changing mode, the traverse width reducing section controls the traverse driving motor so that during the accelerating winding period, traversing is performed with a traverse width that increases continuously from the reduced traverse width as a winding speed increases. (Fig. 1)







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