Verfahren zum Erkennen eines Schussfadens in einer Luftdüsenwebmaschine

Details

Veröffentlichungs-Nr.

EP3498901

Aktenzeichen

EP18210340

Anmeldetag

5. Dezember 2018

Veröffentlichung

29. April 2020

Erteilung

29. April 2020

Rechtsraum

EP

IPC

D03D47/30D03D51/34

Abstract

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).

Anmelder

Firma

Kabushiki Kaisha Toyota Jidoshokki

Land

🇯🇵 Japan

Fachgebiete