EP0195469B1 - Métier à tisser avec fournisseur de trame - Google Patents

Métier à tisser avec fournisseur de trame Download PDF

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Publication number
EP0195469B1
EP0195469B1 EP19860200276 EP86200276A EP0195469B1 EP 0195469 B1 EP0195469 B1 EP 0195469B1 EP 19860200276 EP19860200276 EP 19860200276 EP 86200276 A EP86200276 A EP 86200276A EP 0195469 B1 EP0195469 B1 EP 0195469B1
Authority
EP
European Patent Office
Prior art keywords
woof
thread
weaving machine
components
feed
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
Application number
EP19860200276
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German (de)
English (en)
Other versions
EP0195469B2 (fr
EP0195469A2 (fr
EP0195469A3 (en
Inventor
Joos Waelkens
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.)
Picanol NV
Original Assignee
Picanol NV
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
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Priority claimed from BE2/60647A external-priority patent/BE901969A/nl
Application filed by Picanol NV filed Critical Picanol NV
Publication of EP0195469A2 publication Critical patent/EP0195469A2/fr
Publication of EP0195469A3 publication Critical patent/EP0195469A3/en
Application granted granted Critical
Publication of EP0195469B1 publication Critical patent/EP0195469B1/fr
Publication of EP0195469B2 publication Critical patent/EP0195469B2/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

Definitions

  • This invention concerns a weaving machine with improved feed for the woof. More particularly, it concerns a feed for the woof thread whereby a stoppage can be avoided through the operation of the feed if a break occurs in the woof thread before the shed or gap is reached.
  • the woof thread feed of a weaving machine consists primarily of a number of components, such as thread bobbins, thread extraction machinery and/or unwinding devices and other storage devices, whereby the woof thread follows a determined path from the yarn bobbin until it is offered up to a woof mechanism, by which the yarn is finally fed to the gap.
  • the bobbins used for this purpose are mostly each provided with a reserve bobbin, whereby the end of the thread wound around them is connected to the end of the thread on the active bobbin, such that when the active bobbin is empty, the mechanism automatically switches to the reserve bobbin.
  • Feed systems are also known whereby a number of unwinding bobbins are used which work in turns to achieve a desired effect. This system is most frequently used in a woof system in which use is made of several yarns of different types or colours.
  • the interchanging of the woof yarns to be fed to the gap can be achieved by offering up the or supplying the different yarns alternately to a woof feed device, which can consist of, for example, claw, blower or similar.
  • a disadvantage of all these known woof yarn feed methods lies in the fact that a break in the thread always requires a stoppage whenever such a break occurs outside the gap, irrespective of whether the break occurs between a bobbin and the woof mechanism or the woof feed device, between a bobbin and an unwinding device, on the upper surface of an unwinding device, between the unwinding device and the woof mechanism or between the two coupled bobbins.
  • the claim presents a feed for the woof thread of a weaving machine whereby a break in the thread before the gap does not result in a stoppage. According to the invention, this is achieved by the features of claim 1 having, in the advantage that the weaving machine can continue to operate without interruption.
  • the separated feed consists of an active section, from which the woof thread is supplied to the gap, and a passive section, which is only cut in when the active section has to be disengaged because of a break in the thread or similar incident.
  • the invention provides a separated feed whereby both sections are alternately operational and, in the event of a break in the thread, one of the sections is cut out, while the second section is engaged with doubled operating speed so that the entire weaving machine feed can be ensured by the second section.
  • the improved feed for the woof thread consists primarily of a combination of at least two components: at least one detector to check woof thread travel in the feed system; a drive unit which, when the aforementioned detector detects a fault, cuts out one of the aforementioned components, and engages at least one other component of the feed system in its place, and a woof mechanism.
  • the woof thread feed system consists primarily of the combination of two components 1 and 2, each of which is formed of a yarn bobbin; a woof mechanism 3; at least one detector 4, located along the yarn path of one of the woof thread 5 or 6, which are formed by the unwinding of bobbins 1 and 2; and a drive unit 7, to which detector 4 is connected, and from which a drive line 8 runs to woof mechanism 3.
  • the gap 9 of the weaving machine is schematically represented by means of a dotted line.
  • Woof mechanism 3 is, in this case, a double- action mechanism which can feed either woof thread 5 or woof thread 6 to gap 9, depending on the signal on drive line 8.
  • such woof mechanism 3 may consist of two blowers, each to feed one of woof threads 5 and 6 to gap 9.
  • either the first or the second of these is powered with compressed air.
  • a single blower in which a mechanism or device ensures that the desired woof thread, either 5 or 6, is automatically fed to the entry of the blower.
  • woof mechanism 3 consists principally of a thread presenter of a type already known, which, according to this embodiment, offers up one of the two woof threads, 5 or 6, to the claw, depending on the signal transmitted by drive unit 7.
  • gap 9 is provided with the required woof threads by drawing a woof thread 5 from component or bobbin 1.
  • a break occurs in thread 5
  • it is detected by detector 4, and the detected signal interpreted by drive unit 7, with the result that woof mechanism 3 is automatically cut out by means of a signal along drive line 8, such that from that point on, further weaving is performed with woof thread 6, coming from the second component or bobbin 2.
  • the break in the thread can be repaired, so that the mechanism can transfer back to the first bobbin 1.
  • the invention also provides a solution for the automatic transfer to the second bobbin 2 as soon as the first bobbin 1 is empty.
  • a second detector 10 can be provided, located along the yarn path of woof thread 6 coming from the aforementioned second component or bobbin 2.
  • the feed obtained thus according to the claim can be applied in a number of ways.
  • a first operating method is based on a drive system analogous to the previous one.
  • the system automatically switches to bobbin 2 and woof thread 6.
  • the defect in woof thread 5 is repaired, or empty bobbin 1 replaced by a full bobbin.
  • the system switches back to bobbin 1 in a similar manner.
  • a second possibility of applying a similar installation consists of using both bobbins 1 and 2 during the normal weaving process by alternately offering up woof threads 5 and 6 to gap 9 through alternating action of woof mechanism 3. If one of the detectors 4 and 10 detects, on the one hand, a broken thread, or, on the other hand, the running out of one of the yarn bobbins, drive unit 7 makes sure that the full weaving cycle is performed from one only of components 1 and 2, such that the section where the fault or the end of a bobbin is detected is cut out.
  • the feed mechanism for the woof thread consists primarily of two components, 11 and 12, which replace one another, a woof mechanism 3, a drive unit 7, at least one of the aforementioned detectors 4 or 10, located along the path of the woof threads 5 or 6.
  • each of components 11 and 12 consists of two bobbins, respectively 13 - 14 and 15 - 16.
  • the ends 17 - 18 of each of the first bobbins, respectively 14 and 15, of components 11 and 12 are connected to the ends 19 - 20 of the thread on the related second bobbins, respectively 13 and 16.
  • Detectors 21 and 22 offer the advantage of faster detection of the end of a bobbin than, with detectors 4 and 10, with the result that in this event, action is even faster, in other words, it is possible to switch woof mechanism 3 even more quickly.
  • FIG 4 an embodiment of the invention is represented which consists primarily of a combination of the embodiments shown in Figures 1 to 3.
  • detectors 21 and 22 which, in this case, are provided on the first bobbins 14 - 15 of each of components 11 and 12, there are also detectors on bobbins 13 and 16, respectively 23 and 24.
  • the operation is as follows.
  • woof thread is taken from component 11 only, and that component 12 merely serves as a reserve feed component. If woof thread 5 breaks, then detector 4 transmits a signal to drive unit 7, which then switches woof mechanism 3, via drive line 8, so that from that moment component 11 is cut out and component 12 ensures delivery of the woof thread to gap 9.
  • an embodiment of the invention is represented schematically, in which, in addition to the aforementioned components 11 and 12, which, as stated, consist of two-bobbin sets, components 25 and 26 are also present.
  • These components 25 and 26 here consist of unwinding devices which are installed in the yarn paths of, on the one hand, woof thread 5 and, on the other hand, woof thread 6.
  • These components can also take another form, and are not necessarily limited to unwinding devices. These other forms are most frequently a runout device or a thread extraction device, which may or may not be combined with a thread storage appliance.
  • detectors 4 and 10 are located along woof threads 5 and 6 in the section located between bobbins 14 -15 and components or unwinding devices 25 - 26, in order to be able to ascertain a broken thread between unwinding devices 25 - 26 and woof mechanism 3, detectors, 27 and 28, are provided here as well.
  • supplementary detectors 29 and 30 are provided on unwinding devices 25 and 26, which emit a signal as soon as the number of turns falls below a fixed minimum.
  • drive unit 7 also provides for cutting in and out of components or unwinding devices 25 and 26, by means of drive lines 31 and 32, along which their operation is controlled.
  • components 11 and 25 can provide gap 9 with woof thread 5 during the normal weaving process, while components 12 and 26 do not normally take an active role, but remain constantly operational as spare parts, such that, if necessary, the system can switch automatically so that woof thread 6 is supplied to gap 9.
  • drive unit 7 initiates an automatic switchover to a thread supply from bobbin set 12.
  • the system can operate with more than two feed systems per type of thread. In the case of three systems, for example, the systems can operate at a third of the capacity they would have if operating alone. If a thread break occurs, one of the feed systems drops out, and the others switch to half capacity. If a further thread breaks, one system operates at full capacity.
  • the system can operate with all detectors shown, just as it can operate, with only one of them.
  • the feed system according to the invention can be embodied in multiple form if the system is to operate with more than one type or colour of woof yarn.

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

Claims (11)

1. Machine à tisser équipée d'un dispositif amélioré de fourniture de fil de trame, caractérisée par le fait que le dispositif de fourniture est constitué essentiellement d'une combinaison d'au moins deux éléments de fourniture (1 - 2; 11 - 12; 25 - 26), d'au moins un capteur (4, 10, 21 - 24, 27 - 30) destiné à contrôler l'avance du fil de trame (5, 6) au long de son trajet dans le dispositif de fourniture, d'une unité de commande (7) qui, lorsque le capteur détecte une condition anormale, désactive l'un des éléments de fourniture (1 - 2; 11 - 12; 25 - 26) évoqués ci-dessus et active à sa place au moins un autre élément du dispositif de fourniture, et d'un dispositif d'insertion (3).
2. Machine à tisser selon la revendication 1, caractérisée par le fait qu'au moins les éléments de chaque paire (1 - 2; 11 - 12; 25 - 26) sont identiques.
3. Machine à tisser selon la revendication 1 ou 2, caractérisée par le fait qu'au moins deux éléments de fourniture (1 - 2) sont des bobines de fil.
4. Machine à tisser selon la revendication 1 ou 2, caractérisée par le fait qu'au moins une paire d'éléments de fourniture (1 - 2) estconstituée de jeux de deux bobines de fil (13 - 14; 15 - 16).
5. Machine à tisser selon la revendication 1 ou 2, caractérisée par le fait qu'au moins une paire d'éléments de fourniture (25 - 26) est constituée de dispositifs dérouleurs.
6. Machine à tisser selon la revendication 1 ou 2, caractérisée par le fait qu'au moins une paire d'éléments de fourniture est constituée de dispositifs prédélivreur ou de délivrance de fil.
7. Machine à tisser selon la revendication 1 ou 2, caractérisée par le fait qu'au moins une paire d'éléments de fourniture est constituée de dispositifs d'accumulation de fil.
8. Machine à tisser selon l'une des revendications précédentes, caractérisée par le fait que le capteur (4, 10; 27, 28) mentionné ci-dessus est placé le long du fil de trame (5, 6).
9. Machine à tisser selon l'une des revendications 1 à 7 ci-dessus, caractérisée par le fait qu'au moins un capteur (21; 22; 23; 24; 29; 30) est prévu sur au moins un des éléments de fourniture (1 - 2; 11 - 12; 25 - 26).
10. Machine à tisser selon l'une des revendications précédentes, caractérisée par le fait que l'unité de commande (7) commande le dispositif d'insertion (3).
11. Machine à tisser selon la revendication 5 ou 6, caractérisée par le fait que l'unité de commande (7) commande le dispositif dérouleur ou le dispositif prédélivreur.
EP19860200276 1985-03-19 1986-02-21 Métier à tisser avec fournisseur de trame Expired - Lifetime EP0195469B2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE2060647 1985-03-19
BE2/60647A BE901969A (nl) 1985-03-19 1985-03-19 Weefmachine met verbeterde voeding voor de inslagdraad.

Publications (4)

Publication Number Publication Date
EP0195469A2 EP0195469A2 (fr) 1986-09-24
EP0195469A3 EP0195469A3 (en) 1987-03-11
EP0195469B1 true EP0195469B1 (fr) 1989-03-29
EP0195469B2 EP0195469B2 (fr) 1993-12-29

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EP19860200276 Expired - Lifetime EP0195469B2 (fr) 1985-03-19 1986-02-21 Métier à tisser avec fournisseur de trame

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EP (1) EP0195469B2 (fr)
DE (1) DE3662600D1 (fr)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4924917A (en) * 1988-03-16 1990-05-15 Picanol N.V. Weft thread break monitor and movement limiting device
FR2642769A1 (fr) * 1989-02-07 1990-08-10 Saurer Diederichs Sa Dispositif pour la detection de defauts du fil de trame dans une machine a tisser
EP0389387A1 (fr) * 1989-03-22 1990-09-26 S.A. Saurer Diederichs Dispositif d'alimentation en fil de trame pour machine à tisser avec insertion pneumatique de la trame
US4964442A (en) * 1988-06-17 1990-10-23 Picanol N.V. Reserve weft thread supply mechanism with device for changing thread type
FR2648831A1 (fr) * 1989-06-26 1990-12-28 Saurer Diederichs Sa Dispositif d'alimentation en fil de trame pour machine a tisser avec insertion pneumatique
US4998567A (en) * 1988-12-05 1991-03-12 Picanol, N.V. Weft thread break detector with a time delay circuit
EP0454199A1 (fr) * 1990-04-27 1991-10-30 Picanol N.V. Procédé et dispositif pour fournir du fil de trame à la foule d'un métier à tisser
EP0656437A1 (fr) 1993-12-01 1995-06-07 Picanol N.V. Procédé pour fournir et insérer du fil de trame dans le tissu d'un métier à tisser et fournisseur
US5662148A (en) * 1992-12-03 1997-09-02 Iro Ab Thread feed system having an auxilliary conveyor device
US6164340A (en) * 1999-04-06 2000-12-26 Lindauer Dornier Gesellschaft Mbh Method and apparatus for temporarily activating a brake in a weaving loom
US6371169B1 (en) 1999-09-27 2002-04-16 Sulzer Textil Ag Method for the operation of a thread supplying apparatus of a weaving machine

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1087045B1 (fr) * 1999-09-27 2004-02-25 Sultex AG Procédé pour faire fonctionner le fournisseur d'un métier à tisser
DE10153856A1 (de) * 2001-11-02 2003-05-15 Iropa Ag Fadenliefervorrichtung und Verfahren zur Fadenlieferung
ITMI20042293A1 (it) * 2004-11-26 2005-02-26 Tiziano Barea Metodo perfezionato per alimentare un filato ad una macchina tessile atto alla sua lavorazione e macchina attuante detto metodo
JP2008019515A (ja) * 2006-07-11 2008-01-31 Tsudakoma Corp 流体噴射式織機の緯入装置
JP2008038329A (ja) * 2006-07-11 2008-02-21 Tsudakoma Corp 流体噴射式織機の多色緯入装置
CN106414824B (zh) 2014-05-09 2018-11-13 必佳乐公司 输纬器装置
BE1024414B1 (nl) 2016-07-04 2018-02-12 Picanol Nv Opstelling en werkwijze voor het optimaliseren van een weefproces.

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1010273B (it) * 1974-04-30 1977-01-10 Roy E Vella Spa Dispositivo elettronico di con trollo della inserzione dei fili di trama in telai di tessitura ad alimentazione continua della trama
CH630126A5 (de) * 1978-03-09 1982-05-28 Loepfe Ag Geb Elektronischer fadenwaechter fuer eine webmaschine mit ortsfester schussgarn-vorratsspule.
NL7907093A (nl) * 1979-09-24 1981-03-26 Rueti Te Strake Bv Werkwijze voor het weven met een spoelloze weefmachine, alsmede daarbij te gebruike inslagvoorbereidingsinrich- ting.
FR2506795A1 (fr) * 1981-06-01 1982-12-03 Alsacienne Constr Meca Procede et dispositif pour l'insertion de duites selon une sequence donnee sur une machine a tisser

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4924917A (en) * 1988-03-16 1990-05-15 Picanol N.V. Weft thread break monitor and movement limiting device
US4964442A (en) * 1988-06-17 1990-10-23 Picanol N.V. Reserve weft thread supply mechanism with device for changing thread type
US4998567A (en) * 1988-12-05 1991-03-12 Picanol, N.V. Weft thread break detector with a time delay circuit
FR2642769A1 (fr) * 1989-02-07 1990-08-10 Saurer Diederichs Sa Dispositif pour la detection de defauts du fil de trame dans une machine a tisser
EP0382662A1 (fr) * 1989-02-07 1990-08-16 S.A. Saurer Diederichs Dispositif pour la détection de défauts du fil de trame dans une machine à tisser
FR2644800A1 (fr) * 1989-03-22 1990-09-28 Saurer Diederichs Sa Dispositif d'alimentation en fil de trame pour machine a tisser avec insertion pneumatique de la trame
EP0389387A1 (fr) * 1989-03-22 1990-09-26 S.A. Saurer Diederichs Dispositif d'alimentation en fil de trame pour machine à tisser avec insertion pneumatique de la trame
FR2648831A1 (fr) * 1989-06-26 1990-12-28 Saurer Diederichs Sa Dispositif d'alimentation en fil de trame pour machine a tisser avec insertion pneumatique
EP0406128A1 (fr) * 1989-06-26 1991-01-02 S.A. Saurer Diederichs Dispositif d'alimentation en fil de trame pour machine à tisser avec insertion pneumatique
EP0454199A1 (fr) * 1990-04-27 1991-10-30 Picanol N.V. Procédé et dispositif pour fournir du fil de trame à la foule d'un métier à tisser
BE1004150A3 (nl) * 1990-04-27 1992-09-29 Picanol Nv Werkwijze en inrichting voor het toevoeren van inslaggaren aan de gaap bij een weefmachine.
US5662148A (en) * 1992-12-03 1997-09-02 Iro Ab Thread feed system having an auxilliary conveyor device
EP0656437A1 (fr) 1993-12-01 1995-06-07 Picanol N.V. Procédé pour fournir et insérer du fil de trame dans le tissu d'un métier à tisser et fournisseur
US5544679A (en) * 1993-12-01 1996-08-13 Picanol N.V. Defective weft yarn insertion prevention
US6164340A (en) * 1999-04-06 2000-12-26 Lindauer Dornier Gesellschaft Mbh Method and apparatus for temporarily activating a brake in a weaving loom
US6371169B1 (en) 1999-09-27 2002-04-16 Sulzer Textil Ag Method for the operation of a thread supplying apparatus of a weaving machine

Also Published As

Publication number Publication date
DE3662600D1 (en) 1989-05-03
EP0195469B2 (fr) 1993-12-29
EP0195469A2 (fr) 1986-09-24
EP0195469A3 (en) 1987-03-11

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