(19)
(11) EP 1 813 563 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
22.08.2007 Bulletin 2007/34

(43) Date of publication A2:
01.08.2007 Bulletin 2007/31

(21) Application number: 07001657.1

(22) Date of filing: 25.01.2007
(51) International Patent Classification (IPC): 
B65H 59/10(2006.01)
B65H 63/08(2006.01)
 B65H 54/38(2006.01)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
Designated Extension States:
AL BA HR MK YU

(30) Priority: 31.01.2006 JP 2006023318

(71) Applicant: MURATA KIKAI KABUSHIKI KAISHA
Minami-ku Kyoto-shi Kyoto 601-8326 (JP)

(72) Inventor:
  • Umehara, Yoshito
    Fushimi-ku Kyoto-shi Kyoto 612-8686 (JP)

(74) Representative: Müller-Boré & Partner Patentanwälte 
Grafinger Strasse 2
81671 München
81671 München (DE)

   


(54) Yarn winding device


(57) The present invention improves the quality of a package (7) by preventing wrinkles in a yarn winding device which forms the package (7) by winding a supplied yarn (4) around a winding tube (6) while applying a tension to the yarn (4) by a tensioning device (30) and traversing the yarn (4) by a traversing device (5).
Particularly, in precision winding with a fixed number of winds, in synchronism with an increase in diameter of a yarn layer (7) and a change in a traverse angle (θ), the tension to be applied by the tensioning device (30) is changed. In detail, according to reduction in the traverse angle (θ) calculated by traverse angle calculating means (75), tensioning control means (77) controls to reduce the tension to be applied.







Search report