EP1270780B1 - Vorrichtung zur Ermittlung von Fadenbrüchen von Dreherfäden bei Webmaschinene bzw. Webmaschine, insbesondere mit Webschäften und einer Vorrichtung zur Ermittlung von Fadenbrüchen - Google Patents

Vorrichtung zur Ermittlung von Fadenbrüchen von Dreherfäden bei Webmaschinene bzw. Webmaschine, insbesondere mit Webschäften und einer Vorrichtung zur Ermittlung von Fadenbrüchen Download PDF

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Publication number
EP1270780B1
EP1270780B1 EP02011125A EP02011125A EP1270780B1 EP 1270780 B1 EP1270780 B1 EP 1270780B1 EP 02011125 A EP02011125 A EP 02011125A EP 02011125 A EP02011125 A EP 02011125A EP 1270780 B1 EP1270780 B1 EP 1270780B1
Authority
EP
European Patent Office
Prior art keywords
leno
arms
detecting
loom
threads
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
EP02011125A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1270780A3 (de
EP1270780A2 (de
Inventor
Hockemeyer Kurt
Schwemmlein Christoph
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gebrueder Kloecker GmbH
Original Assignee
Kloecker Geb GmbH
Gebrueder Kloecker GmbH
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
Priority claimed from DE10133800A external-priority patent/DE10133800C1/de
Application filed by Kloecker Geb GmbH, Gebrueder Kloecker GmbH filed Critical Kloecker Geb GmbH
Priority to SI200230515T priority Critical patent/SI1270780T1/sl
Publication of EP1270780A2 publication Critical patent/EP1270780A2/de
Publication of EP1270780A3 publication Critical patent/EP1270780A3/de
Application granted granted Critical
Publication of EP1270780B1 publication Critical patent/EP1270780B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C7/00—Leno or similar shedding mechanisms
    • D03C7/08—Devices for twisting warp threads repeatedly in the same direction
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C7/00—Leno or similar shedding mechanisms
    • 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
    • D03D51/20—Warp stop motions

Definitions

  • the present invention relates to a device for determining yarn breaks of leno threads in the field of leno edging apparatuses in weaving machines, wherein the leno selvedge apparatus has at least two arms for guiding at least two leno threads, wherein by rotation of the arms, the threads are rotatable together.
  • the invention is also a loom with heddles and at least one reversible in its rotational direction leno selvedge apparatus and a device for determining thread breaks on the leno threads.
  • a fabric has a so-called "leno selvedge" on the two side edges.
  • leno prevents the tissue from dissolving.
  • EP 0 674 031 discloses a rotary wrench for weaving machines, which has a so-called leno disk with loops lying opposite one another for guiding the leno threads.
  • a so-called “Vollcarderkante” produced, which is accomplished by the fact that the two leno threads are twisted around the weft thread around each other.
  • a reversal of the direction of rotation is required after a certain number of revolutions.
  • both EP 0 894 880 A1 and EP 0 347 626 A2 also describe devices and methods by which it can be ensured that the leno selvedge device runs synchronously with the heddle shafts, ie the shed opening is ensured at the time, to which also the healds of the loom are in open position.
  • warp stop motion it is known to use so-called "warp stop motion" to monitor the leno threads in view of a breakage.
  • warp stop motion are arranged in the rear compartment between leno selvedge and coil storage.
  • These warp stopwatches represent themselves as metallic, electrically conductive lamellae hanging from the leno threads.
  • the invention is therefore based on the object to provide a device of the type mentioned, with which it is possible to reliably detect thread breaks, even with reversible in their direction, provided with arms turntable apparatus, thus in such Leno selvedge devices that cause a twist on the side of the supply of leno threads, which must be reversed by reversing the direction of rotation.
  • the device for determining the vibration behavior of the arms is not in contact with the arms, Consequently works without contact, so that the mass of the arms remains unchanged.
  • the mass of the arms is to be kept low, since otherwise the required high acceleration values of the leno selvedge apparatus can not be realized.
  • the means for determining the vibration behavior of the arms in the region of the arms comprises means for establishing a magnetic field, wherein a sensor unit for detecting changes in the magnetic field by the movement of the magnetically conductive arms of the leno selvedge apparatus is provided, and wherein an evaluation unit is provided, which are compared by the evaluation unit, the vibration spectra of the natural vibrations generated by the arms at cracked and intact yarn, wherein the evaluation unit is arranged downstream of a signal output unit.
  • the sensor unit itself can have inductive or capacitive working means for determining the oscillation of the arms of the leno selvedge apparatus.
  • Capacitive means for determining oscillations or the course of the oscillation are a capacitor, wherein according to the movement of the arms in a certain frequency, a voltage change takes place in the capacitor.
  • the device for determining thread breaks is advantageously arranged in the front compartment between leno selvedge apparatus and heddles. As already stated elsewhere, it is hitherto known to monitor the leno threads with regard to a thread break in the region of the rear shed. This is associated with various difficulties, in particular it should be emphasized that in very strongly adhering threads such. As cotton threads, even with cracked thread in the area of the rear compartment is not guaranteed that trained as Kettfadenwumbleter slats actually fall down and lead to the desired shutdown of the drive of the loom. That is, the operation of the yarn breakage detection device is obstructed in the back compartment.
  • the device for determining yarn breaks is not in connection with the leno threads, that is designed as a non-contact device.
  • Conceivable here are in detail contactless sensors, such. As photocells, scanners u.
  • Such a sensor unit for determining yarn breaks is advantageously connected to an evaluation unit and / or directly to a signal output unit in connection, wherein the signal output unit the drive of the loom is controllable, that is to put in doubt, is to be set.
  • the generally designated 1 coil holder can be seen, from which the two leno threads 2 and 3 are deducted.
  • the two leno threads 2 and 3 are held by the thread retainer 4 under tension and deflected.
  • the designated leno machine 10 the two leno threads 2, 3 on the back, that is supplied in the region of the rear compartment H.
  • Downstream of the leno selvedge apparatus 10 are the healds 20 and the reed 21 and the tree 22, which receives the tissue.
  • the front compartment V now extends from the point of twisting the leno threads with the weft thread to the leno selvedge apparatus.
  • the leno selvedge apparatus 10 shows the motor drive 11 and the two diagonally opposite arms 12, which thus constitute a "propeller".
  • each one sensor unit 14 On the housing of the motor 11 at least two magnets 13 are provided and behind each one sensor unit 14, for example in the form of a coil, a Hall sensor or a capacitor. It is advantageous if both the magnet and the sensor and also the arms 12 of the leno selvedge apparatus 10 are arranged one behind the other at a standstill. Then, the vibration curve can be detected cleanly and without interference by the sensor, which results when the arm is under the tension of the leno thread, is thus damped in its natural vibration, or the Turpentine is torn, and a damping of the natural vibration of the arm is essentially nonexistent.
  • the deviating oscillation or frequency spectrum of damped oscillation of the arms due to the applied tension of the leno thread can be used for the evaluation. It can be seen from FIGS. 5 and 6 how such a waveform is formed when the leno thread is intact or torn, respectively.
  • methods such. B. fuzzy logic can also be used.
  • the change of the magnetic field is determined by the sensor unit 14, for example, a coil or a Hall sensor as inductively operating sensors or a capacitor as a frequency spectrum and in an evaluation unit 14a, the damping or the waveform, by the Damping is effected and / or the vibration spectrum is compared in the case of broken with the intact leno thread, in which case, depending on the result of the comparison of the signal output unit 14b is a signal for stopping the drive of the loom.
  • the sensor unit 14 for example, a coil or a Hall sensor as inductively operating sensors or a capacitor as a frequency spectrum
  • the damping or the waveform, by the Damping is effected and / or the vibration spectrum is compared in the case of broken with the intact leno thread, in which case, depending on the result of the comparison of the signal output unit 14b is a signal for stopping the drive of the loom.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Filamentary Materials, Packages, And Safety Devices Therefor (AREA)
  • Knitting Machines (AREA)
EP02011125A 2001-06-09 2002-05-18 Vorrichtung zur Ermittlung von Fadenbrüchen von Dreherfäden bei Webmaschinene bzw. Webmaschine, insbesondere mit Webschäften und einer Vorrichtung zur Ermittlung von Fadenbrüchen Expired - Lifetime EP1270780B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI200230515T SI1270780T1 (sl) 2001-06-09 2002-05-18 Naprava za odkrivanje nitnih pretrgov osnovnih niti pri tkalnih strojih oz. pri tkalnem stroju, zlasti s tkalnimi ročicami in napravo za odkrivanje nitnih pretrgov

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE10128079 2001-06-09
DE10128079 2001-06-09
DE10133800 2001-07-11
DE10133800A DE10133800C1 (de) 2001-06-09 2001-07-11 Vorrichtung zur Ermittlung von Fadenbrüchen von Dreherfäden bei Webmaschinen bzw. Webmaschine, insbesondere mit Webschäften und einer Vorrichtung zur Ermittlung von Fadenbrüchen

Publications (3)

Publication Number Publication Date
EP1270780A2 EP1270780A2 (de) 2003-01-02
EP1270780A3 EP1270780A3 (de) 2004-04-14
EP1270780B1 true EP1270780B1 (de) 2007-03-14

Family

ID=26009497

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02011125A Expired - Lifetime EP1270780B1 (de) 2001-06-09 2002-05-18 Vorrichtung zur Ermittlung von Fadenbrüchen von Dreherfäden bei Webmaschinene bzw. Webmaschine, insbesondere mit Webschäften und einer Vorrichtung zur Ermittlung von Fadenbrüchen

Country Status (10)

Country Link
US (1) US6814107B2 (cs)
EP (1) EP1270780B1 (cs)
JP (1) JP3578154B2 (cs)
CN (1) CN1225578C (cs)
AT (1) ATE356899T1 (cs)
CZ (1) CZ300517B6 (cs)
DE (1) DE50209702D1 (cs)
DK (1) DK1270780T3 (cs)
ES (1) ES2282343T3 (cs)
HK (1) HK1049504B (cs)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003313755A (ja) * 2002-04-22 2003-11-06 Tsudakoma Corp 耳経糸切れ検出装置
CN100545607C (zh) * 2007-04-28 2009-09-30 江苏万工科技集团有限公司 消极式凸轮开口机构的动态模拟振动测量装置
DE102008046326A1 (de) * 2008-08-29 2010-03-04 Picanol N.V. Verfahren und Vorrichtung zum Beobachten eines Bewegungsverlaufs einer Webmaschine
JP5217992B2 (ja) * 2008-12-10 2013-06-19 株式会社豊田自動織機 織機における経糸切断検出装置
DE102012009420A1 (de) * 2012-05-11 2013-11-14 Gebrüder Klöcker GmbH Vorrichtung zum Herstellen eines Gewebes
CN103911712B (zh) * 2014-04-22 2016-08-24 奉化市骏兴玩具有限公司 一种改进型断纱自停装置
EP3162934B1 (de) * 2015-10-28 2018-03-28 Gebrüder Klöcker GmbH Vorrichtung zum bilden einer dreherkante, insbesondere für eine webmaschine sowie projektilwebmaschine mit einer solchen vorrichtung
CN105671760B (zh) * 2016-04-15 2017-12-05 苏州市丹纺纺织研发有限公司 一种振动式断经指示装置
CN106192168B (zh) * 2016-08-29 2017-11-24 青岛天一集团红旗纺织机械有限公司 一种喷气织机绞边机构试验装置
CN108239821A (zh) * 2016-12-27 2018-07-03 天津市华之阳特种线缆有限公司 绝缘纱线断线自动检测器
BR112020003726A2 (pt) * 2017-08-24 2021-03-23 Siddarth Lohia dispositivo e método de detecção de ponta de quebra ou fim do fio de urdidura em um tear para tecelagem de tecido

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2744544A (en) * 1953-08-28 1956-05-08 Draper Corp Loom stop motion
US2710631A (en) * 1954-08-12 1955-06-14 Draper Corp Selvage thread feeding means for looms
US3158852A (en) * 1960-08-23 1964-11-24 Gordon E Schacher Apparatus and procedure for sensing passage of moving thread or the like
US3859593A (en) * 1973-06-27 1975-01-07 John Huyton Poole Detection of breaks in flexible elongate members
CH621158A5 (cs) * 1977-05-13 1981-01-15 Rueti Ag Maschf
EP0075757B1 (en) * 1981-09-25 1986-01-02 Nissan Motor Co., Ltd. Optical weft sensor for a loom
IT1217872B (it) * 1988-06-20 1990-03-30 Mario Scavino Dispositivo guida filo a leva azionato da motore lineare per macchine tessili
EP0678605B1 (de) * 1994-04-22 1999-06-09 Sulzer RàœTi Ag Vorrichtung zum Ueberwachen eines Kettfadens
DE19548955C1 (de) * 1995-12-28 1996-09-12 Kloecker Entwicklungs Gmbh Vorrichtung zum Bilden einer Dreherkante, insbesondere für schützenlose Webmaschinen
DE19647495C1 (de) * 1996-11-16 1998-01-02 Kloecker Entwicklungs Gmbh Vorrichtung zum Bilden einer Dreherkante
DE19654962A1 (de) * 1996-12-12 1998-06-18 Dornier Gmbh Lindauer Halte- und Positioniereinrichtung für eine Dreherkantenvorrichtung in Webmaschinen
DE29713724U1 (de) * 1997-08-01 1997-09-25 Dornier Gmbh Lindauer Rotations-Kantendreher mit direkt elektromagnetischem Antrieb für Webmaschinen
DE19733262A1 (de) * 1997-08-01 1999-02-04 Dornier Gmbh Lindauer Rotations-Kantendreher mit direkt elektromagnetischem Antrieb für Webmaschinen
US6536643B2 (en) * 1999-08-10 2003-03-25 Teijin Limited Method for detecting break point of thread and apparatus therefor

Also Published As

Publication number Publication date
CN1225578C (zh) 2005-11-02
EP1270780A3 (de) 2004-04-14
JP2003041451A (ja) 2003-02-13
CZ300517B6 (cs) 2009-06-10
JP3578154B2 (ja) 2004-10-20
CN1390996A (zh) 2003-01-15
CZ20021995A3 (cs) 2003-01-15
US20030024588A1 (en) 2003-02-06
EP1270780A2 (de) 2003-01-02
HK1049504A1 (en) 2003-05-16
ES2282343T3 (es) 2007-10-16
HK1049504B (zh) 2006-01-13
ATE356899T1 (de) 2007-04-15
US6814107B2 (en) 2004-11-09
DE50209702D1 (de) 2007-04-26
DK1270780T3 (da) 2007-04-23

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