ATE421604T1 - METHOD FOR MONITORING THE WEFT IN A WEAVING MACHINE - Google Patents

METHOD FOR MONITORING THE WEFT IN A WEAVING MACHINE

Info

Publication number
ATE421604T1
ATE421604T1 AT02007476T AT02007476T ATE421604T1 AT E421604 T1 ATE421604 T1 AT E421604T1 AT 02007476 T AT02007476 T AT 02007476T AT 02007476 T AT02007476 T AT 02007476T AT E421604 T1 ATE421604 T1 AT E421604T1
Authority
AT
Austria
Prior art keywords
weft
intersection
machine cycle
interval
accordance
Prior art date
Application number
AT02007476T
Other languages
German (de)
Inventor
Erich Weidmann
Walter Schuemperli
Original Assignee
Loepfe Ag Geb
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Loepfe Ag Geb filed Critical Loepfe Ag Geb
Application granted granted Critical
Publication of ATE421604T1 publication Critical patent/ATE421604T1/en

Links

Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D51/00—Driving, starting, or stopping arrangements; Automatic stop motions
    • D03D51/18—Automatic stop motions
    • D03D51/34—Weft stop motions

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)

Abstract

A focused light beam (8c) is used for sensing. It is determined whether the weft (1) is at the correct location along the desired path of introduction into the shed, at appropriate positions and instants during the machine cycle. The beam is positioned to be interrupted by the weft, when it is on the right path. The weft is deflected to the side in accordance with the machine cycle, such that it passes through the beam during deflection. The instant at which they intersect, is compared with a desired interval (T1). A fault is deduced, should intersection not occur in interval T1, or if intersection occurs in intervals (T2a) or (T2b) before or after T1. A thread-tensioning deflector (3) moves the weft, in accordance with the machine cycle. The duration of weft intersection is compared with a desired interval, measuring also the deflector motion and arranging the light beam suitably. The loom is a shuttle machine, operated with a similar arrangement. Individual weft measurement times are determined for comparison with measured values.
AT02007476T 2002-04-02 2002-04-02 METHOD FOR MONITORING THE WEFT IN A WEAVING MACHINE ATE421604T1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP02007476A EP1350878B1 (en) 2002-04-02 2002-04-02 Method for monitoring the weft thread in a loom

Publications (1)

Publication Number Publication Date
ATE421604T1 true ATE421604T1 (en) 2009-02-15

Family

ID=27838050

Family Applications (1)

Application Number Title Priority Date Filing Date
AT02007476T ATE421604T1 (en) 2002-04-02 2002-04-02 METHOD FOR MONITORING THE WEFT IN A WEAVING MACHINE

Country Status (3)

Country Link
EP (1) EP1350878B1 (en)
AT (1) ATE421604T1 (en)
DE (1) DE50213234D1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2098624A1 (en) 2008-03-07 2009-09-09 Gebrüder Loepfe AG Weft thread monitoring in a loom

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH375305A (en) * 1959-09-14 1964-02-15 Breitmeier Max Method and device for the detection of weft thread breaks on looms
CH634885A5 (en) * 1979-01-29 1983-02-28 Loepfe Ag Geb ELECTRONIC SCANNING DEVICE FOR SHOT MONITORING ON A GRIPPER SHOT WEAVING MACHINE WITH COLOR CHANGING DEVICE.
AT377795B (en) * 1982-12-16 1985-04-25 Saurer Ag Adolph WIFE MONITORING DEVICE ON A WEAVING MACHINE
JPH0382853A (en) * 1989-08-28 1991-04-08 Toyota Autom Loom Works Ltd Weft detecting device in jet loom
EP0816545B1 (en) * 1996-07-03 2000-02-02 Sulzer Textil Ag Defective weft insertion detection device on a gripper loom
DE29900477U1 (en) * 1999-01-14 1999-03-25 Ilitex Ag, Cham Weft monitoring device, in particular for ribbon looms

Also Published As

Publication number Publication date
EP1350878B1 (en) 2009-01-21
EP1350878A1 (en) 2003-10-08
DE50213234D1 (en) 2009-03-12

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