(19)
(11) EP 2 072 440 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
16.06.2010 Bulletin 2010/24

(43) Date of publication A2:
24.06.2009 Bulletin 2009/26

(21) Application number: 08020035.5

(22) Date of filing: 17.11.2008
(51) International Patent Classification (IPC): 
B65H 57/12(2006.01)
B65H 57/26(2006.01)
 B65H 57/22(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 MT NL NO PL PT RO SE SI SK TR
Designated Extension States:
AL BA MK RS

(30) Priority: 20.12.2007 JP 2007328507

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

(72) Inventor:
  • Nakagawa, Takashi
    Kyoto-shi Kyoto 612-8686 (JP)

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

   


(54) Unwinding assisting device and automatic winder comprising the same


(57) An unwinding assisting device (12) includes a regulating member (40) that regulates a balloon generated when a yarn is unwound from a yarn supplying bobbin (21), and an elevating and lowering means for elevating and lowering the regulating means (40). The elevating and lowering means comprises a stepping motor (41) and a belt member (42) that transmits driving of the stepping motor (41). The belt member (42) is a toothed belt (Fig.2).







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