(19)
(11) EP 2 159 180 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
29.12.2010 Bulletin 2010/52

(43) Date of publication A2:
03.03.2010 Bulletin 2010/09

(21) Application number: 09166667.7

(22) Date of filing: 29.07.2009
(51) International Patent Classification (IPC): 
B65H 51/22(2006.01)
B65H 63/06(2006.01)
 B65H 61/00(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 SM TR

(30) Priority: 25.08.2008 JP 2008215580

(71) Applicant: Murata Machinery, Ltd.
3 Minami Ochiai-cho, Kisshoin Minami-ku, Kyoto-shi, Kyoto (JP)

(72) Inventor:
  • Kino, Yoshihiro
    Kyoto Kyoto 612-8686 (JP)

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

   


(54) Yarn winding device and automatic winder


(57) A winding unit 10 in an automatic winder is configured to wind a predetermined length of yarn 20 into a package 30. The winding unit 10 includes a yarn pool section 71, a servo motor 55, and a yarn length control section 90. The yarn pool section 71 accumulates that the yarn before being wound into the package 30. The servo motor 55 is driven to supply the yarn to the yarn pool section 71. The yarn length control section 90 allows a supply count section 91 to count a forward rotation pulse signal from the servo motor 55 so that the predetermined length of yarn is wound into the package 30. Then, based on the count value in the forward rotation pulse signal, the length of the yarn wound into the package 30 is calculated (Fig. 1).







Search report