(19)
(11) EP 2 392 531 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
10.10.2012 Bulletin 2012/41

(43) Date of publication A2:
07.12.2011 Bulletin 2011/49

(21) Application number: 11167730.8

(22) Date of filing: 26.05.2011
(51) International Patent Classification (IPC): 
B65H 51/22(2006.01)
D01H 15/00(2006.01)
 D01H 4/48(2006.01)
(84) Designated Contracting States:
AL 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 RS SE SI SK SM TR
Designated Extension States:
BA ME

(30) Priority: 02.06.2010 JP 2010127258

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

(72) Inventors:
  • Yokota, Itaru
    Kyoto, Kyoto 612-8686 (JP)
  • Oka, Masaki
    Kyoto, Kyoto 612-8686 (JP)

(74) Representative: Beck, Alexander 
Hansmann & Vogeser Patent- und Rechtsanwälte Maximilianstrasse 4b
82319 Starnberg
82319 Starnberg (DE)

   


(54) Yarn accumulating device


(57) A yarn accumulating device includes a roller main body (60) and a yarn hooking member (52). The roller main body (60) is adapted to wind spun yarn around an outer peripheral surface thereof by being rotated. The yarn hooking member (52) is attached to a downstream end of the roller main body (60) in a yarn travelling direction. The yarn hooking member (52) is adapted to assist unwinding of the spun yarn (Y) by relatively rotating with the roller main body while making contact with the spun yarn unwound from the roller main body (60). A first flange portion (64) is formed on the roller main body (60), the diameter of which increases towards the downstream end in the yarn travelling direction. A straight line portion (65L) that is an arc having a smaller curvature than a curvature of an arc of the contour (64L) is formed on at least a portion of a contour (64L) of a projection viewed from an axial direction of the first flange portion (64).







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