(19)
(11) EP 2 664 571 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
11.06.2014 Bulletin 2014/24

(43) Date of publication A2:
20.11.2013 Bulletin 2013/47

(21) Application number: 13162090.8

(22) Date of filing: 03.04.2013
(51) International Patent Classification (IPC): 
B65H 63/08(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: 18.05.2012 JP 2012114443

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

(72) Inventors:
  • Kawamoto, Kenji
    Kyoto, 612-8686 (JP)
  • Kimura, Osamu
    Kyoto, 612-8686 (JP)

(74) Representative: HOFFMANN EITLE 
Patent- und Rechtsanwälte Arabellastrasse 4
81925 München
81925 München (DE)

   


(54) Yarn winding apparatus


(57) A winding unit (2) of an automatic winder (1) includes a yarn supplying section (11), a winding section (13) that winds a yarn Y supplied from the yarn supplying section (11) around a winding tube (17) into a package, a yarn clearer (22) that detects thickness of the yarn Y, and a unit controller (26). The unit controller (26) includes a yarn length calculating section (41) that calculates the length of the yarn Y wound around the winding tube (17) and a weight calculating section (42) that calculates a yarn weight of the package. The weight calculating section (42) calculates the yarn weight of the package based on the thickness of the yarn Y detected by the yarn clearer (22), the length of the yarn Y detected by the yarn length calculating section (41), and information on the specific gravity of the yarn Y.







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Search report