(19)
(11) EP 1 031 524 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
03.07.2002 Bulletin 2002/27

(43) Date of publication A2:
30.08.2000 Bulletin 2000/35

(21) Application number: 00103006.3

(22) Date of filing: 14.02.2000
(51) International Patent Classification (IPC)7: B65H 54/40, B65H 54/42, B65H 54/44, B65H 54/52, B65H 59/38
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 26.02.1999 JP 5095499
26.02.1999 JP 5095599

(71) Applicant: MURATA KIKAI KABUSHIKI KAISHA
Kisshoin, Minami-ku Kyoto-shi 601 (JP)

(72) Inventors:
  • Nomura, Satoshi
    Kyoto-shi, Kyoto (JP)
  • Hasegawa, Masakatsu
    Makishima-cho, Uji-shi, Kyoto (JP)
  • Muta, Katsufumi
    Kyoto-shi, Kyoto (JP)

(74) Representative: Liedl, Christine, Dipl.-Chem. et al
Hansmann & Vogeser Patentanwälte Postfach 70 08 60
81308 München
81308 München (DE)

   


(54) Yarn winding apparatus


(57) The shock imparted by the contact roller against the package when a yarn winding apparatus switches from gap winding to normal winding is lessened. An elastic holding means 21, such as a plate spring or the like, is positioned between frame 6 and slide box 7. The slide box 7 can be raised and lowered relative to the frame 6, and holds a contact roller 5. The elastic holding means 21 exerts elastic counter-force in the opposite direction to that in which the contact roller 5 is drawn to the package 3. This softens the sudden spike in contact pressure normally seen when the contact roller 5 makes contact with the package 3. Additionally, the distance of separation between the contact roller 5 and the bobbin 2 can be reliably maintained at the pre-set level during gap winding. This makes it easier to estimate the exact contact time at which the contact roller 5 will meet the package 3, thereby enabling the switch from programmed control of the bobbin rotation speed to feedback control of the bobbin rotation speed to be timed precisely to the moment of contact between the contact roller 5 and the bobbin 2.






Search report