EP 3498901 B1 20200429 - METHOD OF DETECTING WEFT YARN IN AIR JET LOOM
Title (en)
METHOD OF DETECTING WEFT YARN IN AIR JET LOOM
Title (de)
VERFAHREN ZUM ERKENNEN EINES SCHUSSFADENS IN EINER LUFTDÜSENWEBMASCHINE
Title (fr)
PROCÉDÉ DE DÉTECTION DE FIL DE TRAME DANS UN MÉTIER À TISSER À JET D'AIR
Publication
Application
Priority
JP 2017239729 A 20171214
Abstract (en)
[origin: EP3498901A1] A method of detecting a weft yarn in an air jet loom includes: setting a first weft yarn detection period (P1); setting a second weft yarn detection period (P2); setting a first threshold (S1, S3) for the detection signal detected during the first weft yarn detection period (P1); setting a second threshold (S2, S4) for the detection signal detected during the second weft yarn detection period (P2); and, when the detection signal detected during the first weft yarn detection period (P1) is equal to or greater than the first threshold (S1, S3) and the detection signal detected during the second weft yarn detection period (P2) is smaller than the second threshold (S2, S4), determining that a turning back of the inserted weft yarn (Y) has occurred in which the inserted weft yarn (Y) once reached an end (51) of a woven fabric (50) but turned back toward the woven fabric (50).
IPC 8 full level
D03D 47/30 (2006.01); D03D 51/34 (2006.01)
CPC (source: CN EP)
D03D 47/3073 (2013.01 - CN EP); D03D 51/34 (2013.01 - EP)
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 3498901 A1 20190619; EP 3498901 B1 20200429; CN 109957872 A 20190702; CN 109957872 B 20201020; JP 2019105013 A 20190627; JP 6922714 B2 20210818
DOCDB simple family (application)
EP 18210340 A 20181205; CN 201811516229 A 20181212; JP 2017239729 A 20171214