Title:
エアジェット織機における緯糸検出方法
Document Type and Number:
Japanese Patent JP6922714
Kind Code:
B2
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).
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Inventors:
Yoichi Makino
Ryuji Arai
Kakiuchi Natsuki
Ryuji Arai
Kakiuchi Natsuki
Application Number:
JP2017239729A
Publication Date:
August 18, 2021
Filing Date:
December 14, 2017
Export Citation:
Assignee:
KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
International Classes:
D03D51/34; D03D47/30
Domestic Patent References:
| JP2017089020A | ||||
| JP59187647A | ||||
| JP2016035124A |
Attorney, Agent or Firm:
Michiharu Soga
Kajinami order
Ichiro Oi
Kanayama Asuka
Kajinami order
Ichiro Oi
Kanayama Asuka