EP 2907908 B1 20160622 - Yarn-unwinding sensor for storage yarn feeders with rotary drum
Title (en)
Yarn-unwinding sensor for storage yarn feeders with rotary drum
Title (de)
Garnabspulsensor für Garnvorratsvorrichtungen mit Drehtrommel
Title (fr)
Capteur de déroulement de fil pour les prédélivreurs de stockage à tambour rotatif
Publication
Application
Priority
IT TO20140120 A 20140213
Abstract (en)
[origin: EP2907908A1] A yarn feeder is provided with a motorized, yarn-winding rotary drum (12) which is rotatable with respect to a motor-housing (16) and is adapted to have a plurality of yarn loops (Y) wound on itself, which are adapted to be unwound upon request from a downstream machine. A sensor comprises light-emitting means (42) and light-receving means (44), at least one of which is to be fixed to the rotary drum (12), which operatively define a light connection passing through a detection area (30c) of the rotary drum (12) which is adapted to be repeatedly engaged by the yarn during its rotational unwinding movement. The unwinding of yarn from the rotary drum is determined on the basis of the variation of light resulting from the yarn (Y) transiting on the detection area (30c).
IPC 8 full level
B65H 51/20 (2006.01); B65H 51/22 (2006.01); D04B 15/48 (2006.01)
CPC (source: EP)
D04B 15/482 (2013.01); D04B 15/486 (2013.01)
Designated contracting state (EPC)
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
DOCDB simple family (publication)
EP 2907908 A1 20150819; EP 2907908 B1 20160622; CN 104846533 A 20150819; CN 104846533 B 20190308
DOCDB simple family (application)
EP 14003877 A 20141118; CN 201410748555 A 20141209