EP0286584B1 - Procédé pour le fonctionnement du dispositif d'emmagasinage de fil de trame dans un métier à tisser - Google Patents

Procédé pour le fonctionnement du dispositif d'emmagasinage de fil de trame dans un métier à tisser Download PDF

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Publication number
EP0286584B1
EP0286584B1 EP88810149A EP88810149A EP0286584B1 EP 0286584 B1 EP0286584 B1 EP 0286584B1 EP 88810149 A EP88810149 A EP 88810149A EP 88810149 A EP88810149 A EP 88810149A EP 0286584 B1 EP0286584 B1 EP 0286584B1
Authority
EP
European Patent Office
Prior art keywords
accumulator
control
control device
drum
weft thread
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
EP88810149A
Other languages
German (de)
English (en)
Other versions
EP0286584A1 (fr
Inventor
Martinus Dekker
Hubertus Pieter Emannuel Achten
Lodewijk Joanus Hendrikus Cornelis Heinemans
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.)
Sulzer AG
Original Assignee
Gebrueder Sulzer AG
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 Gebrueder Sulzer AG filed Critical Gebrueder Sulzer AG
Publication of EP0286584A1 publication Critical patent/EP0286584A1/fr
Application granted granted Critical
Publication of EP0286584B1 publication Critical patent/EP0286584B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/34—Handling the weft between bulk storage and weft-inserting means
    • D03D47/36—Measuring and cutting the weft
    • D03D47/361—Drum-type weft feeding devices
    • D03D47/367—Monitoring yarn quantity on the drum
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/34—Handling the weft between bulk storage and weft-inserting means
    • D03D47/36—Measuring and cutting the weft
    • D03D47/361—Drum-type weft feeding devices
    • D03D47/362—Drum-type weft feeding devices with yarn retaining devices, e.g. stopping pins
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/34—Handling the weft between bulk storage and weft-inserting means
    • D03D47/36—Measuring and cutting the weft
    • D03D47/361—Drum-type weft feeding devices
    • D03D47/362—Drum-type weft feeding devices with yarn retaining devices, e.g. stopping pins
    • D03D47/363—Construction or control of the yarn retaining devices
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/34—Handling the weft between bulk storage and weft-inserting means
    • D03D47/36—Measuring and cutting the weft
    • D03D47/361—Drum-type weft feeding devices
    • D03D47/364—Yarn braking means acting on the drum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2557/00—Means for control not provided for in groups B65H2551/00 - B65H2555/00
    • B65H2557/30—Control systems architecture or components, e.g. electronic or pneumatic modules; Details thereof
    • B65H2557/33—Control systems architecture or components, e.g. electronic or pneumatic modules; Details thereof for digital control, e.g. for generating, counting or comparing pulses

Definitions

  • the invention relates to a method for operating a weft thread store of a weaving machine, with a stationary drum and a control device for the weft thread wound around the drum, the control device having at least two sensors.
  • Such a weft store is described in Swiss Patent No. 647,999. It explains a detection device for the thread to be wound onto the drum and at least one further one for the weft thread to be pulled off the drum. After the second detection device has reported a certain number of signals as a result of the passing weft thread to the control of the weft thread store, a blocking device is switched on, which prevents further thread turns from being pulled off the drum of the weft thread store. The accuracy of the length dimension of the weft thread to be inserted into the weaving machine depends on the function of the second detection device.
  • the signals of the sensors of the control device are compared by an evaluation unit and are only taken into account for the control of the weft thread store and the weaving machine if the chronological sequence of the signals corresponds to at least one expectation model.
  • the absence of a single expected signal from a sensor of the control device is only taken into account if the absence of a corresponding signal from at least one second sensor is also determined by the evaluation unit.
  • a surplus signal that is not expected from a sensor for example as a result of a dirt particle in the sensitive area of the sensor, is not taken into account for the control if it occurs only occasionally and is not detected by at least a second sensor. In this way, interference in the area of the control device, be it in the area of the sensors or to keep away from the control of the weft store and the weaving machine within the control device.
  • the weft thread 10 to be processed in the weaving machine 30 is drawn off from a yarn bobbin 100 by the weft thread store 1, in that a winder 12 winds the weft thread in a plurality of turns on a stationary drum 11, whereupon the weft thread 10 through the control device 19 and the blowing nozzle 33 into the through the warp threads 31 and 32 of the weaving machine 30 formed shed is entered.
  • the weft thread enters the weft thread store 1 through the funnel 172 of the winder shaft 17 and then passes through the winder 12 fastened in the winder shaft is formed from the eyelets 121 and 122 and the intermediate tube 120.
  • a rod 173 is located diametrically opposite the winder as a mass balance.
  • the winder shaft 17 is mounted in the bearings 171 in the housing 15 and is driven by a controlled electric motor 13 via the belt drive 140, 141 and 142.
  • the drum 11 of the weft thread store is mounted on the winder shaft by means of the radial bearing 18. It is prevented from rotating by magnet pairs 16, one of which is located in the housing 15 and another in the drum 11.
  • the drum shell 113 of the drum extends only partially over the circumference of the drum.
  • the drum is formed by brackets 110, the bent ends of which converge radially at flange 111.
  • the flange 111 serves to hold the stirrups 110 in place and enables radial adjustment of the stirrups so that the drum circumference can be changed in accordance with the weft thread length required in the weaving machine 30.
  • the weft thread After the weft thread has been deposited on the conical section 115 of the drum 11, the weft thread turns slide further to the right in FIG. 2 onto the cylindrical section of the drum 11, in order then to be withdrawn discontinuously.
  • the start and end of the removal process are controlled by the locking pin 21, which can be moved radially against the stop 22 in the drum 11 by the electromagnet 20.
  • the magnet 20 has a connection piece 23 for compressed air, which is used for cooling and damping the magnet armature.
  • the cap 112 engages, which forms a narrow annular gap with the drum for braking the thread turns running out of the accumulator.
  • the control device 19 is fastened to the cap 112 by means of the bolts 114 and is essentially formed from the control ring 190, the transmitter 191 and the receiver 192.
  • the control ring 190 is made of transparent material, for example plexiglass.
  • the balloon of the running weft is limited on its conical inside.
  • the trailing edge of the control ring 190 is protected by the wear ring 193, which is made of hardened steel or ceramic, for example.
  • the transmitter 191 and 191 ' forms a light barrier with the receiver 192.
  • Transmitter 191 and receiver 192 are each surrounded by a jacket 194. Since the beam path 195 or 195 'according to FIG. 4 is broken at the transition of the beams into the interior of the control ring 190 or out of the control ring, transmitter 191 and receiver 192 must be arranged in accordance with the angles of refraction of the beams.
  • the beam paths 195 and 195 'according to FIG. 4 are briefly interrupted by the weft thread 10 running from the drum 11, whereupon signals are given to the amplifiers A and B.
  • the temporal sequence of the signals is compared in the evaluation unit W according to FIG. 4 with an expected model.
  • the expected model of the signal sequence in the case of a double arrangement of transmitters 191 and receivers 192 is shown in FIG. 5a.
  • the evaluation unit W forwards a signal to the controller SS for the magnet 20 when a certain number of regular pulses has been registered in the evaluation unit W.
  • the locking pin 21 is pressed against the stop 22 by means of the magnet 20, whereby the Pull-off process of the thread 10 comes to a standstill from the drum 11.
  • the control signals in an embodiment of the control device according to FIG. 4 are alternately generated by the receivers 192 and 192 ', the control device 19 is able to detect interference signals and from an effective disruption of the yarn path, for example as a result of tearing off To distinguish weft.
  • the non-hatched rectangle is intended to represent an interference signal for the amplifier A, which is generated, for example, by a dirt particle crossing the beam path 195 '. Since the other expected signals from the receivers 192 or 192 'arrive according to the program, the evaluation unit W does not detect a fault in the weft thread 10 in this case and consequently suppresses the interference signal.
  • FIG. 5c Another possible interference in the signal processing is shown in FIG. 5c.
  • the dashed, non-hatched rectangle is intended to show that an expected signal does not arrive in amplifier B. This disturbance can exist if a thin spot in the weft yarn crosses the beam path 195 and only leads to an insignificant weakening of the radiation, which is not recognized as an interruption of the beam path.
  • FIG. 8c which is indicated by several expected non-arriving signals and leads to the immediate shutdown of the weaving machine and the weft thread store via the control S.
  • Fig. 1 the control of the electric motor 13 for the winder 12 of the weft thread is shown.
  • the electric motor 13 has the task of driving the winder 12 via the belt drive 14 in such a way that the number of thread windings drawn off the drum 13 is immediately replaced by new ones Winding weft threads are replaced by the bobbin 100 so that there are always enough thread windings on the drum 11.
  • the evaluation unit W continuously reports the number of effectively drawn thread turns to the comparator V, which on the other hand registers the number of new thread turns for the electric motor via the sensor 125 or in response from the control SE for the electric motor.
  • the difference value between newly placed thread turns and drawn thread turns is transmitted from the comparator to the controller R, which compares the difference value from the comparator V with the target value from the input device SW and, depending on the result, issues control commands to the control SE of the electric motor.

Landscapes

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

Claims (4)

1. Procédé de mise en oeuvre d'un dispositif d'emmagasinage de fil de trame (1) d'un métier à tisser, avec un tambour fixe (11) et un dispositif de contrôle (19) pour fil de trame (10) entourant le tambour (11) et débobiné de celui-ci, le dispositif de contrôle comprenant au moins deux détecteurs (191, 192 ou 191′, 192′), dont chacun donne lors du débobinage à chaque passage du fil de trame un signal transmissible à un dispositif de régulation du dispositif d'emmagasinage du fil de trame (1), caractérisé par le fait que les signaux des détecteurs (191, 192 ou 191′, 192′) du dispositif de contrôle sont transmis à un dispositif analytique (W) et sont comparés dans celui-ci à au moins un modèle prévisionnel correspondant à une succession dans le temps prédéterminée de ces signaux en cas de fonctionnement normal du dispositif d'emmagasinage de fil de trame, et que les signaux générés ne sont pris en compte pour la régulation (S) du dispositif d'emmagasinage de fil de trame (1) et du métier à tisser (30) que si la succession dans le temps des signaux générés correspond au modèle prévisionnel.
2. Procédé selon la revendication (1), caractérisé par le fait que l'absence d'un seul signal prévu en provenance d'un détecteur (191, 192) du dispositif de contrôle (19) n'est prise en compte que si l'absence d'un signal correspondant d'au moins un deuxième détecteur (191′, 192′) est également constatée par le dispositif analytique (W).
3. Procédé selon la revendication 1, caractérisé par le fait qu'un signal en surnombre et non prévu, par exemple suite à une particule de salissure dans la zone de détection du détecteur, n'est pas pris en compte pour la régulation (S) du dispositif d'emmagasinage de fil de trame s'il ne se produit que ponctuellement et n'est pas constaté par au moins un deuxième détecteur (191′, 192′).
4. Dispositif de contrôle d'un dispositif d'emmagasinage de fil de trame pour la mise en oeuvre du procédé selon la revendication 1, avec au moins deux détecteurs (191, 192 ou 191′, 192′) placés sur le dispositif d'emmagasinage du fil de trame (1), caractérisé par le fait que les détecteurs (191, 192 ou 191′, 192′) sont reliés à la régulation (S) du dispositif d'emmagasinage du fil de trame (1) par le biais d'un dispositif analytique (W).
EP88810149A 1987-04-08 1988-03-09 Procédé pour le fonctionnement du dispositif d'emmagasinage de fil de trame dans un métier à tisser Expired - Lifetime EP0286584B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH134987 1987-04-08
CH1349/87 1987-04-08

Publications (2)

Publication Number Publication Date
EP0286584A1 EP0286584A1 (fr) 1988-10-12
EP0286584B1 true EP0286584B1 (fr) 1991-05-08

Family

ID=4208398

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88810149A Expired - Lifetime EP0286584B1 (fr) 1987-04-08 1988-03-09 Procédé pour le fonctionnement du dispositif d'emmagasinage de fil de trame dans un métier à tisser

Country Status (4)

Country Link
US (1) US4848417A (fr)
EP (1) EP0286584B1 (fr)
JP (1) JPS63270839A (fr)
DE (1) DE3862670D1 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2932098B2 (ja) * 1988-12-07 1999-08-09 アイ・アール・オー エー・ビー オプトエレクトロニクス糸検出装置
EP0498852B1 (fr) * 1989-11-03 1995-01-04 Iro Ab Procede pour empecher des vibrations torsionnelles dans un dispositif de stockage et d'acheminement de fil, et dispositif de stockage et d'acheminement de fil
NL9101312A (nl) * 1991-07-31 1993-02-16 Rueti Inrichting voor het vormen van een voorraadwikkel uit een vanaf een garenvoorraad aangevoerde draad.
NL9201344A (nl) * 1992-07-24 1994-02-16 Rueti Inrichting voor het voeden van een periodiek werkende garen-verwerkende inrichting.
BE1009172A3 (nl) * 1995-02-28 1996-12-03 Picanol Nv Grijperweefmachine met inslagdetectiemiddelen.
DE19526216A1 (de) * 1995-07-18 1997-01-23 Iro Ab Verfahren zum Abtasten eines Fadens und Fadenabzugssensor
DE19915349A1 (de) * 1999-04-06 2000-10-19 Dornier Gmbh Lindauer Verfahren zum Vermeiden einer Bremsverzögerung bei einem Webstop in einer Webmaschine
IT1307712B1 (it) * 1999-04-27 2001-11-14 Lgl Electronics Spa Metodo di sorveglianza dell'inserzione di trama nei sistemi dialimentazione di telai a getto di fluido con premisuratore del filato
NL1014729C2 (nl) * 2000-03-23 2001-09-25 Te Strake Bv Werkwijze voor het opnemen en tellen van van een trommel aflopende wikkelingen, alsmede een inrichting voor het uitvoeren van deze werkwijze.
ITTO20020029U1 (it) * 2002-02-08 2003-08-08 L G L Electronics Spa ,,dispositivo alimentatore di trama per macchine tessili con sistema di fissaggio del tamburo fisso al corpo motore perfezionato,,
JP5821646B2 (ja) * 2012-01-17 2015-11-24 株式会社豊田自動織機 複数の緯糸を同時に緯入れする流体噴射式織機の緯糸切れ検出装置

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH647999A5 (de) * 1980-06-17 1985-02-28 Rueti Ag Maschf Fadenliefervorrichtung fuer textilmaschinen und verfahren zum betrieb der fadenliefervorrichtung.
US4617971A (en) * 1982-05-12 1986-10-21 Aktiebolaget Iro Loom control system
US4546263A (en) * 1982-12-06 1985-10-08 Nissan Motor Company, Limited Weft sensor for a loom
JPS59106543A (ja) * 1982-12-13 1984-06-20 日産自動車株式会社 断片織機の緯糸供給装置
JPS59187647A (ja) * 1983-04-01 1984-10-24 津田駒工業株式会社 織機の緯欠点検出停止装置
JPS60162838A (ja) * 1984-01-27 1985-08-24 株式会社豊田自動織機製作所 流体噴射式織機における緯入れ方法
US4614311A (en) * 1985-01-30 1986-09-30 Kasuga Denki Co., Ltd. Yarn storage and delivery apparatus
JPH0733614B2 (ja) * 1985-04-05 1995-04-12 津田駒工業株式会社 よこ入れ制御方法およびその装置
JPH0749612B2 (ja) * 1986-01-22 1995-05-31 津田駒工業株式会社 ドラム式緯糸測長貯留装置の緯糸解舒検知装置

Also Published As

Publication number Publication date
US4848417A (en) 1989-07-18
EP0286584A1 (fr) 1988-10-12
DE3862670D1 (de) 1991-06-13
JPS63270839A (ja) 1988-11-08

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