EP 0417849 A1 19910320 - Method for eliminating the yarn portion clamped and wound at the end of the winding tube, and a device for implementing the method.
Title (en)
Method for eliminating the yarn portion clamped and wound at the end of the winding tube, and a device for implementing the method.
Title (de)
Verfahren zum Entfernen des am Ende der Spulhülse geklemmten und aufgewickelten Garnteiles und eine Vorrichtung zum Durchführen des Verfahrens.
Title (fr)
Procédé pour éliminer la partie du fil pincée et enroulée au bout du tube de bobinage et un dispositif pour la mise en oeuvre de ce procédé.
Publication
Application
Priority
IT 2173889 A 19890915
Abstract (en)
The present invention relates to a method for eliminating the yarn portion clamped and wound at the end of a winding tube for the purpose of forming a bobbin in a winding machine in which as the yarn portion positioned between the yarn accumulation on the tube and the region in which the tube is clamped to the holding centre of the bobbin support arm moves radially outwards by the action of centrifugal force, it undergoes a circumferential trajectory which is increasingly displaced outwards as it slackens until said portion interferes at one point with a cutting element which rapidly cuts the yarn to thus interrupt its continuity between the bobbin package and said holding centre. The yarn portion clamped between the tube and holding centre is sucked in and removed advantageously through a suction port which is activated by the opening of the bobbin support arm. The device for implementing the method comprises a fixed cutting blade positioned slightly above and approximately in the middle of said yarn portion when extending taut between the yarn accumulation on the tube and the point at which the tube is clamped to the holding centre of the bobbin support arm.
IPC 1-7
IPC 8 full level
B65H 54/71 (2006.01)
CPC (source: EP)
B65H 54/71 (2013.01); B65H 2701/31 (2013.01)
Citation (search report)
- [A] DE 1214583 B 19660414 - REINERS WALTER DR ING
- [A] GB 543373 A 19420223 - SCHWEITER AG MASCHF
- [A] GB 1069612 A 19670524 - EIZABURO NEGISHI
- [A] US 2575015 A 19511113 - HENDRICKS WILLIAM E
- [A] US 2578755 A 19511218 - SMITHSON RALPH O, et al
- [A] US 2646936 A 19530728 - O'NEILL JR HARRY T
- [A] US 2634917 A 19530414 - MAY JOHN W
- [A] FR 2307746 A1 19761112 - RIETER AG MASCHF [CH]
Designated contracting state (EPC)
CH DE ES FR GB LI
DOCDB simple family (publication)
EP 0417849 A1 19910320; IT 1231706 B 19911220; IT 8921738 A0 19890915
DOCDB simple family (application)
EP 90202384 A 19900907; IT 2173889 A 19890915