EP 1801273 B1 20100707 - Weft stock detector for weft feeders
Title (en)
Weft stock detector for weft feeders
Title (de)
Fadenreservedetektor für Schussfadenliefervorrichtungen
Title (fr)
Détecteur de la réserve de fil pour des fournisseurs de fil de trame
Publication
Application
Priority
IT TO20050893 A 20051222
Abstract (en)
[origin: EP1801273A2] The detector is applied to weft feeders provided with a stationary drum (12) on which yam loops are wound to form a weft stock (RT). Three feeler arms (22, 24, 26) are hinged by side of the drum about respective axes (28, 30, 32) and are biased with their respective contact ends (34a) against the drum for swinging between an active lifted position and a lowered resting postion in relation to the presence/absence of loops on the drum. Photoelectric cells (42) arranged to detect the movements of the feeler arms each comprise an emitting diode (47) generating a stream of photons through an elongated narrow slot (48) extending radially, and a photodiode (50) in front of the slot (48). The feeler arm has a shield (52) insertable between the diode and the photodiod and delimited frontally by a rectilinear edge (54) aligned to the outer edge of the slot with the feeler arm in its resting position, in order to obscure the slot.
IPC 8 full level
D03D 47/36 (2006.01); D03D 47/34 (2006.01)
CPC (source: EP)
D03D 47/367 (2013.01)
Designated contracting state (EPC)
BE CH DE LI SE
DOCDB simple family (publication)
EP 1801273 A2 20070627; EP 1801273 A3 20090429; EP 1801273 B1 20100707; CN 1986929 A 20070627; CN 1986929 B 20110525; DE 602006015277 D1 20100819; IT TO20050893 A1 20070623
DOCDB simple family (application)
EP 06021600 A 20061016; CN 200610171187 A 20061220; DE 602006015277 T 20061016; IT TO20050893 A 20051222