(19)
(11) EP 2 573 223 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
18.01.2017 Bulletin 2017/03

(43) Date of publication A2:
27.03.2013 Bulletin 2013/13

(21) Application number: 12179103.2

(22) Date of filing: 02.08.2012
(51) International Patent Classification (IPC): 
D01H 4/02(2006.01)
 D01H 1/115(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: 21.09.2011 JP 2011206362

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

(72) Inventors:
  • Oka Masaki
    Kyoto 612-8686 (JP)
  • Susami Hiroyuki
    Kyoto 612-8686 (JP)
  • Yamamoto, Atsushi
    Kyoto 612-8686 (JP)

(74) Representative: Stöckeler, Ferdinand et al
Schoppe, Zimmermann, Stöckeler Zinkler, Schenk & Partner mbB Patentanwälte Radlkoferstrasse 2
81373 München
81373 München (DE)

   


(54) Pneumatic spinning device, spinning unit, spinning machine, and pneumatic spinning method


(57) A pneumatic spinning device includes a nozzle block (134) including a whirling airflow generating nozzle (127) adapted to inject spinning compressed air into a spinning chamber (126) to generate the whirling airflow in the spinning chamber (126), a flow pipe (200) adapted to enable flow of the spinning compressed air to be supplied to the whirling airflow generating nozzle (127), and a spinning switching valve (203) provided to the flow pipe (200) and adapted to permit or shut the flow of the spinning compressed air that flows through the flow pipe (200). A volume inside a first flow pipe (201) is set such that a length of a fiber bundle (10e) at a yarn end of the spun yarn (10) cut by the shut of the flow of the spinning compressed air is a first length.







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