(19)
(11) EP 1 857 578 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
27.04.2011 Bulletin 2011/17

(43) Date of publication A2:
21.11.2007 Bulletin 2007/47

(21) Application number: 07107450.4

(22) Date of filing: 03.05.2007
(51) International Patent Classification (IPC): 
D01H 1/36(2006.01)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR
Designated Extension States:
AL BA HR MK RS

(30) Priority: 12.05.2006 JP 2006134271

(71) Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
Kariya-shi, Aichi 448-8671 (JP)

(72) Inventor:
  • FUJII, Yoshimasa
    Kariya-shi, Aichi 448-8671 (JP)

(74) Representative: TBK-Patent 
Bavariaring 4-6
80336 München
80336 München (DE)

   


(54) Method of forming a cop in a spinning machine


(57) A method of forming a cop (40) by upward winding yarn (Y) around a bobbin (B) in a spinning machine by means of filling building is characterized by the step of winding the yarn (Y) to an upper limit position (UL) of a ring rail (18) by normal winding operation where upward displacement (Du) of a lower reversal position (PL) of the ring rail (18) is constantly the same while a chase length (Lc) is kept constant, and the step of increasing winding quantity of the yarn (Y) by lifting/lowering the ring rail (18) so that the chase length (Lc) gradually decreases while an upper reversal position of the ring rail is lowered from the upper limit position of the ring rail.







Search report