EP 0753613 B1 20000621 - Device for continuously inserting a core in a sliver
Title (en)
Device for continuously inserting a core in a sliver
Title (de)
Vorrichtung zum fortlaufenden Einbringen eines Kernfadens in ein Faserband
Title (fr)
Dispositif pour l'insertion en continu d'un fil d'ame dans une mèche de fibres
Publication
Application
Priority
FR 9508585 A 19950711
Abstract (en)
[origin: EP0753613A1] An appts. to deliver a continuous stretch core (3) to a cladding fibre (2) feed, in the prodn. of core spun yarns, has a deflection roller (9) for the core (3) at a gap (D) from the feed roller (6) of at least 250 mm, with free core travel along this stretch (D) to take up vibrations through the passage of the fibres (2) acting on the feed roller (6). A drawing stage for the core yarn (3) has a leading section (24) defined by the support shaft (20) and the deflection roller (9). A second drawing stage is defined by the deflection roller (9) and the feed roller (6). The total stretch coefficient of the successive stages (24,25) is set through a higher stretch in the first stage (24) than in the second (25) so that, at the feed roller (6), the core has a very low differential tension. Pref. the stretch coefficient at the first drawing stage (24) is 80-98% and pref. 95% and, at the second stage (25) is 2-20% and pref. 5%. The support shaft (20), deflection roller (9) and feed roller (6) have independent motor drives (21-23), with power supplied through electronic variable speed units. A central unit (26) is programmable to control the motors (21-23). The deflection roller (9) has a V-shaped circular groove, with a groove base in an arc segment at a radius set according to the core yarn (3) dia..
IPC 1-7
IPC 8 full level
D02G 3/32 (2006.01)
CPC (source: EP)
D02G 3/324 (2013.01)
Designated contracting state (EPC)
BE CH DE ES FR GB IE IT LI PT
DOCDB simple family (publication)
EP 0753613 A1 19970115; EP 0753613 B1 20000621; DE 69608929 D1 20000727; FR 2736658 A1 19970117; FR 2736658 B1 19970905
DOCDB simple family (application)
EP 96440055 A 19960711; DE 69608929 T 19960711; FR 9508585 A 19950711