Yarn winding device and automatic winder comprising the same

(19)

(11)

EP 2 159 181 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: 09168025.6

(22)	Date of filing: 18.08.2009

(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
	Designated Extension States:
	AL BA RS

(30)

Priority:

25.08.2008 JP 2008215583

(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 comprising the same

(57) A winding unit 10 includes a yarn pool section 71 accumulating a yarn 20 not wound into a package 30 yet, and a servo motor 55 driven to supply the yarn 20 to the yarn pool section 71. The winding unit 10 includes a clearer 15 located on the upstream side of the yarn pool section 71 in order to detect the yarn defect. The winding unit 10 calculates the length of the uneven-thickness portion having passed through the clearer 15 based the amount by which the yarn is fed to the upstream side of the yarn pool section 71 (Fig. 1).

Search report