EP0291484B1 - Method for continuous thread feeding from bobbins and device for carrying out this method - Google Patents

Method for continuous thread feeding from bobbins and device for carrying out this method Download PDF

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Publication number
EP0291484B1
EP0291484B1 EP19880870043 EP88870043A EP0291484B1 EP 0291484 B1 EP0291484 B1 EP 0291484B1 EP 19880870043 EP19880870043 EP 19880870043 EP 88870043 A EP88870043 A EP 88870043A EP 0291484 B1 EP0291484 B1 EP 0291484B1
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EP
European Patent Office
Prior art keywords
thread
feed coil
coil
beginning
unwound
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EP19880870043
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German (de)
French (fr)
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EP0291484A1 (en
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Henry Shaw
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Picanol NV
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Picanol NV
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    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H63/00—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package
    • B65H63/08—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to delivery of a measured length of material, completion of winding of a package, or filling of a receptacle
    • B65H63/086—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to delivery of a measured length of material, completion of winding of a package, or filling of a receptacle responsive to completion of unwinding of a package
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H67/00—Replacing or removing cores, receptacles, or completed packages at paying-out, winding, or depositing stations
    • B65H67/02—Arrangements for removing spent cores or receptacles and replacing by supply packages at paying-out stations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H69/00—Methods of, or devices for, interconnecting successive lengths of material; Knot-tying devices ;Control of the correct working of the interconnecting device
    • 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
    • D03D47/342—Handling the weft between bulk storage and weft-inserting means knot detection
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments

Definitions

  • the present invention relates to a method of continuous feeding of yarn from bobbins, more particularly allowing the continuous feeding of weft yarns going to weaving machines.
  • the invention also relates to a device implementing the method provided by the invention.
  • a first disadvantage consists in the diffficulties which the passage from one reel to the other can cause.
  • reeling anomalies can occur for the last part of the thread of a spool because the last turns present on the spool, instead of taking place regularly, slide on the spool and become tangled.
  • Another disadvantage of the traditional knotting of successive spools lies in the fact that for each new spool to be placed on the machine, it is necessary to detect not only the beginning of the new thread, but also the end of the previous thread, which can cause importance. wasted time.
  • the invention relates to a method of continuous feeding of yarn from feed spools in a weaving machine in which the feeding of the yarn is carried out by the intermediary of a supplier, this supplier constituting a thread reserve allowing the unwinding of the thread from the supplier in an intermittent movement; said method being essentially composed of a wire feed from a first coil, the presence of a second supply spool, the start of the wire of which is brought close to the wire spooled by the first supply spool, detecting when the wire of the first supply spool is almost entirely spooled without being completely , the stopping of the supply and the connection of the start of the wire coming from the second supply coil with the wire unwound by the first supply coil, and the resumption of the supply of wire from the second coil, characterized in that the supply of wire from said first coil is stopped following two conditions, firstly, the detection of said moment, and secondly, the fact that the supplier is located in a state allowing an interruption of the feeding of the thread from
  • the supplier is only stopped when the reserve of yarn on the supplier reaches an optimal level according to the weaving process.
  • the detection of the quasi-exhaustion of the wire reserve on the first supply reel is followed by the constitution of an additional wire reserve on the supplier by rotating it, for a given time, at maximum speed.
  • the device for monitoring the active supply coil rather than detecting the exact moment at which the first supply coil is fully unwound, captures the moment when it is almost completely wound up, without the 'be completely, that is to say the moment when there are still a few meters of wire on the spool.
  • this has the particular advantage that the time of stopping the supply of yarn to allow connection with the next supply spool can be chosen optimally according to the weaving cycle. .
  • this early detection makes it possible to take all the measures to stop for a brief instant the feeding of the thread from the active reel, without however interrupting the insertion of the weft nor, consequently, the weaving.
  • a variant of this method could consist in increasing the supplier's rotation speed for a short period, so as to provide an additional thread reserve on the drum. If such a reserve is established, the supplier may be immobilized for a fairly long period while providing the desired number of picks; in this case, there is ample time to tie a new supply reel.
  • the device implementing the method provided by the invention mainly consists of elements intended to present the beginning of the thread of the new supply reel facing the thread being unwound, detection elements intended to follow the unwinding active supply coils and connection elements intended to connect the two wires when passing from one coil to the next coil.
  • detection elements intended to follow the unwinding active supply coils
  • connection elements intended to connect the two wires when passing from one coil to the next coil.
  • the supply of thread 1 to a device such as a supplier 2 of a weaving machine can be carried out by the unwinding of the thread from a first supply reel 3, this thread passing through example with a guide eyelet 4.
  • the installation as shown in FIG. 1 further comprises a second supply coil 5, a device 6 intended to present the start 7 of the wire 8 of the second supply coil 5 near the wire 9 of the first supply coil 3, a connection device 10 intended to connect the wires 8 and 9, as well as sensors 11 and 12 intended to monitor the reserves of wire on the coils 3 and 5, these sensors being connected, for example, to a control unit 13 responsible for controlling the connection device 10.
  • the device 6 intended to present the start of wire 7 near the wire 9 unwound by the coil active consists, in the first embodiment shown, of two guide eyelets 14 and 15 placed side by side and through which pass, respectively, the wires 8 and 9; as well as a wire clamp 16 retaining the start 7 of the wire coming from the second supply reel 5.
  • the connection device 10 can be either a knotter or a splicer.
  • the splicing is a particularly suitable method because of its speed, because it does not cause any local weakening of the wire and because it guarantees the continuity of the wire; in other words, a spliced wire can be woven without compromising either the operation of certain sensitive organs downstream, or the final appearance of the woven product.
  • FIGS. 2 to 4 The successive phases of the operation of the installation are shown diagrammatically in FIGS. 2 to 4.
  • the sensor 11 finds that the reserve of wire on the supply coil 3 is practically exhausted, but is not absolutely.
  • the control unit 13 then deactivates the supplier so as to end the feeding of the wire 1, and activates the connection device 10.
  • the start 7 of the wire unwound by the second supply coil 5 is connected to the wire 9 of the first spool 3.
  • the residual thread 17 remaining on the supply spool 3 is cut by the thread cutter 18.
  • a new supply coil 20 is mounted in place of the coil 3 almost entirely unwound; the wire of this new coil is then positioned in the wire clamp and becomes the start of wire 7.
  • the sequence of operations just described can then be repeated, with a passage from coil 5 to coil 20 , similar to the previous passage between the coils 3 and 5.
  • the mode of detection of quasi-exhaustion of the coil 3 by means of the sensor 11 is illustrated in FIG. 5.
  • the optical sensor 11, placed next to the supply coil 3, sends a signal 21 which is reflected by the coil 19 and which is detected by the sensor 11. It is clear that the coil 19 will only reflect the signal when the number of turns present is reduced and the surface of the coil 19 becomes visible. To ensure the reflection of the optical signal 21, the coil 19 can be covered with a highly reflective coating affecting, for example, the shape of a spiral ribbon 22.
  • the activation of the sensor 11 can be followed either by the constitution of an additional wire reserve on the supplier 2, before the termination of the connection from the start from wire 7 to wire 9.
  • the conditions of this process are represented schematically in the graphs of FIGS. 6 to 8.
  • the quantity of wire A present on this reel decreases regularly, phenomenon shown for reasons of simplicity by the downward curve 23 of FIG. 6.
  • the speed of the supplier for example the number of turns made by the wire guide arm 24, can vary between a minimum value N1 and a maximum value N2, condition represented by curve 25 in FIG. 7.
  • the wire reserve R on the drum will also vary between two values R1 and R2, as represented by curve 27 in FIG. 8; this variation is due on the one hand to the variation in the number of turns made by the wire guide arm 24 and, on the other hand, to the unwinding of the wire 9 according to an intermittent movement at the start of the drum 26.
  • the quantity of wire A When unwinding the supply reel 3, the quantity of wire A will reach a predetermined minimum value A1 at a time t1, after which the sensor will send a signal to the control unit 13. From then on, the supplier 2 will switch to its maximum speed N2, to which it will be maintained for a given period X. It is clear that this rise in speed will have the effect of further reducing the quantity of wire A present on the first supply reel 3, at the same time as the reserve of wire R present on the supplier 2 increases. From the moment t2 when the wire reserve on the supplier 2 has reached a predetermined maximum value R3, the supplier will be deactivated and braked until it stops. However, the weaving machine remaining in activity, the maximum yarn reserve R3 will be brought back in a short time to an absolute minimum R0.
  • FIG. 9 represents a reel holder 28 consisting of a conveyor belt successively presenting the feed reels in front of the feed device and implementing the method provided by the invention.
  • the device 6 mentioned above, and intended to present the start 7 of the wire of the second supply coil 5 near the wire 9 of the first supply coil 3, in this case consists essentially of the wire clamp 16 mentioned above, placed here near the guide eyelet 4, and a movable wire guide 30 which, when the first coil 3 is almost exhausted, can move the wire 9 a certain distance to place it in a substantially parallel position relative to the wire 8 of the second coil 5. This operation is illustrated in FIG. 10. After the paralleling, the connection device 10 is activated to join the wires 8 and 9 either by knotting or by a splice.
  • FIG. 11 also represents the way in which the start 7 of the thread coming from the following supply spool 20 can be sought by a wire finder 31.
  • a wire finder 31 can consist, for example, of a vacuum cleaner nozzle covering the surface of the supply coil 20 and capable of taking the start of wire 7, which can then, using an eye-catching device not shown in the figure, be brought before the wire clamp 16 to be retained there.
  • the bobbin of the old supply coil, carrying the turns of residual wire 17, is evacuated.
  • the spool holder 28 illustrated in FIGS. 9 to 11 requires only a single sensor 11, intended for controlling the quantity of wire present on the supply spools, since the transport belt will always have brought them in the same place when the wire is almost exhausted during unwinding.

Description

La présente invention a trait à une méthode d'alimentation continue en fil au départ de bobines, permettant plus particulièrement l'amenée continue des fils de trame allant vers les machines à tisser.The present invention relates to a method of continuous feeding of yarn from bobbins, more particularly allowing the continuous feeding of weft yarns going to weaving machines.

L'invention concerne également un dispositif mettant en oeuvre la méthode prévue par l'invention.The invention also relates to a device implementing the method provided by the invention.

Pour alimenter en continu les fils de trame d'une machine à tisser au départ de bobines d'alimentation, il faut assurer un passage immédiat à une nouvelle bobine lors de l'épuisement de la bobine active. Pour cela, on relie classiquement les bobines les unes aux autres en nouant la fin du fil d'une bobine au début du fil de la bobine qui lui succède. Cette méthode traditionnelle comporte toutefois certains inconvénients.To feed the weft threads of a weaving machine continuously from the supply reels, an immediate change to a new reel must be ensured when the active reel is exhausted. For this, the coils are conventionally connected to one another by tying the end of the wire of a coil to the beginning of the wire of the coil which follows it. This traditional method has certain drawbacks, however.

Un premier inconvénient consiste dans les diffficultés que peut susciter le passage d'une bobine à l'autre. De plus, il arrive régulièrement que la dernière partie du fil présente sur une bobine soit de qualité médiocre parce qu'elle a été endommmagée lors de la mise en route du bobinage.A first disadvantage consists in the diffficulties which the passage from one reel to the other can cause. In addition, it often happens that the last part of the wire present on a spool is of poor quality because it was damaged during the starting of the winding.

De même, des anomalies au dévidage peuvent se présenter pour la dernière partie du fil d'une bobine parce que les dernières spires présentes sur la bobine, au lieu de se dérouler régulièrement, glissent sur le bobinot et s'emmêlent.Similarly, reeling anomalies can occur for the last part of the thread of a spool because the last turns present on the spool, instead of taking place regularly, slide on the spool and become tangled.

Un autre inconvénient du nouage traditionnel des bobines successives réside dans le fait que pour chaque nouvelle bobine à placer sur la machine, il faut détecter non seulement le début du nouveau fil, mais encore la fin du fil précédent, ce qui peut occasionner d'importance pertes des temps.Another disadvantage of the traditional knotting of successive spools lies in the fact that for each new spool to be placed on the machine, it is necessary to detect not only the beginning of the new thread, but also the end of the previous thread, which can cause importance. wasted time.

Du document DE 886.115 il est connu une méthode d'alimentation continue en fil avec plusieurs bobines, qui consiste à détecter le moment où le fil de la bobine d'alimentation est presque entièrement dévidé et à connecter le fil venant d'une nouvelle bobine d'alimentation avec le fil dévidé par la première bobine d'alimentation.From the document DE 886.115 there is known a method of continuous wire supply with several coils, which consists in detecting the moment when the wire of the supply coil is almost completely unwound and in connecting the wire coming from a new supply coil with the wire unwound by the first supply coil.

Du document DE 2.700.974 il est aussi connu que le fil d'une première bobine et le fil d'une deuxième bobine peuvent ètre présentés l'un prés de l'autre, afin d'effectuer un changement de bobine.From document DE 2,700,974 it is also known that the wire of a first coil and the wire of a second coil can be presented close to each other, in order to effect a change of coil.

Néanmoins, aucun de ces documents n'offre une méthode d'alimentation continue en fil dans des machines à tisser qui présente la caractéristique que le changement de bobine peut être effectué sans interrompre le tissage.However, none of these documents offers a continuous method of feeding yarn into weaving machines which has the characteristic that the change of spool can be carried out without interrupting the weaving.

Afin de réaliser cet objectif, l'invention concerne une méthode d'alimentation continue en fil au départ de bobines d'alimentation dans une machine à tisser dans laquelle l'amenée du fil est effectuée par l'intermédiare d'un fournisseur, ce fournisseur constituant une réserve de fil permettant le dévidage du fil au départ du fournisseur selon un mouvement intermittent; ladite méthode étant composée essentiellement d'une alimentation en fil au départ d'une première bobine, de la présence d'une deuxième bobine d'alimentation dont le début du fil est amené à proximité du fil dévidé par la première bobine d'alimentation, de la détection du moment où le fil de la première bobine d'alimentation est presque entièrement dévidé sans l'être tout à fait, de la mise à l'arrêt de l'alimentation et de la connection du début du fil venant de la deuxième bobine d'alimentation avec le fil dévidé par la première bobine d'alimentation, et de la reprise de l'alimentation en fil au départ de la deuxième bobine, caractérisée en ce que l'alimentation en fil au départ de ladite première bobine est mise à l'arrêt suite à deux conditions, premièrement, la détéction dudit moment, et deuxièmement, le fait que le fournisseur se trouve dans un état permettant une interruption de l'amenée du fil au départ de la bobine active pendant un bref instant, sans pour autant interrompre le tissage; et en ce que le fil résiduel de la première bobine d'alimentation est coupé afin de permettre l'enlèvement de ce fil résiduel.In order to achieve this objective, the invention relates to a method of continuous feeding of yarn from feed spools in a weaving machine in which the feeding of the yarn is carried out by the intermediary of a supplier, this supplier constituting a thread reserve allowing the unwinding of the thread from the supplier in an intermittent movement; said method being essentially composed of a wire feed from a first coil, the presence of a second supply spool, the start of the wire of which is brought close to the wire spooled by the first supply spool, detecting when the wire of the first supply spool is almost entirely spooled without being completely , the stopping of the supply and the connection of the start of the wire coming from the second supply coil with the wire unwound by the first supply coil, and the resumption of the supply of wire from the second coil, characterized in that the supply of wire from said first coil is stopped following two conditions, firstly, the detection of said moment, and secondly, the fact that the supplier is located in a state allowing an interruption of the feeding of the thread from the active coil for a brief instant, without interrupting the weaving; and in that the residual wire of the first supply reel is cut in order to allow the removal of this residual wire.

Afin de répondre à la deuxième condition, selon une première possibilité le fournisseur n'est mis en arrêt que lorsque la réserve de fil sur le fournisseur atteint un niveau optimal en fonction du processus de tissage.In order to meet the second condition, according to a first possibility, the supplier is only stopped when the reserve of yarn on the supplier reaches an optimal level according to the weaving process.

Selon une deuxième possibilité, afin de répondre à la deuxième condition dans un délai minimal, la détection du quasi-épuisement de la réserve de fil sur la première bobine d'alimentation est suivie de la constitution d'une réserve de fil supplémentaire sur le fournisseur en faisant tourner celui-ci, pendant un temps donné, à un régime maximal.According to a second possibility, in order to meet the second condition as quickly as possible, the detection of the quasi-exhaustion of the wire reserve on the first supply reel is followed by the constitution of an additional wire reserve on the supplier by rotating it, for a given time, at maximum speed.

Il est clair que selon la méthode que l'on vient d'esquisser, les derniers mètres de fil présents sur chaque bobine sont rejetés lors du passage à la bobine suivante, de sorte que les fins de fil défectueuses évoquées plus haut ne sont pas amenées à la machine à tisser. Il est clair aussi que tous les inconvénients énumérés plus haut et liés à la méthode traditionnelle de nouage sont supprimés par la méthode présentée.It is clear that according to the method which we have just outlined, the last meters of wire present on each reel are rejected during the passage to the next reel, so that the defective ends of wire mentioned above are not brought in the weaving machine. It is also clear that all the drawbacks listed above and related to the traditional knotting method are eliminated by the method presented.

Selon la méthode conforme à l'invention, le dispositif de surveillance la bobine d'alimentation active, plutôt que de détecter le moment exact auquel la première bobine d'alimentation est entièrement dévidée, capte le moment où elle l'est presque, sans l'être tout à fait, c'est-à-dire le moment où il reste encore quelques mètres de fil sur la bobine. Dans le cas des machines à tisser, cela offre l'avantage particulier que le moment de l'arrêt de l'alimentation en fil pour permettre la connexion avec la bobine d'alimentation suivante peut ètre choisi de manière optimale en fonction du cycle de tissage. De même, cette détection précoce permet de prendre toutes les dispositions pour arrêter pendant un bref instant l'amenée du fil au départ de la bobine active, sans pour autant interrompre l'insertion de la trame ni, par conséquent, le tissage. Par exemple, on pourra choisir d'interrompre l'alimentation en fil d'un fournisseur d'une machine à tisser par la mise à l'arrêt du bras guide-fil lorsque le tambour du fournisseur porte une quantité maximale de fil; dans cette situation, il est à la fois possible de nouer une nouvelle bobine d'alimentation et de prendre, sur le tambour, le nombre de longueurs de duites nécessaires aux insertions de trame pendant le passage d'une bobine à l'autre. Une variante de cette méthode pourrait consister à augmenter le régime de rotation du fournisseur pendant une brève période, de manière à prévoir une réserve de fil supplémentaire sur le tambour. Si on constitue une telle réserve, le fournisseur pourra être immobilisé pendant une période assez longue tout en fournissant le nombre voulu de duites; dans ce cas, on dispose d'un délai amplement suffisant pour procéder au nouage d'une nouvelle bobine d'alimentation. Le dispositif mettant en oeuvre la méthode prévue par l'invention se compose principalement d'éléments destinés à présenter le début du fil de la nouvelle bobine d'alimentation face au fil en cours de dévidage, d'éléments de détection destinés à suivre le dévidage des bobines d'alimentation actives et d'éléments de connexion destinés à relier les deux fils lors du passage d'une bobine à la bobine suivante. La construction de tels dispositifs est expliquée en détail dans les paragraphes qui suivent.According to the method according to the invention, the device for monitoring the active supply coil, rather than detecting the exact moment at which the first supply coil is fully unwound, captures the moment when it is almost completely wound up, without the 'be completely, that is to say the moment when there are still a few meters of wire on the spool. In the case of weaving machines, this has the particular advantage that the time of stopping the supply of yarn to allow connection with the next supply spool can be chosen optimally according to the weaving cycle. . Likewise, this early detection makes it possible to take all the measures to stop for a brief instant the feeding of the thread from the active reel, without however interrupting the insertion of the weft nor, consequently, the weaving. For example, one could choose to interrupt the supply of yarn to a supplier of a weaving machine by stopping the yarn guide arm when the supplier's drum carries a maximum quantity of yarn; in this situation, it is both possible to tie a new feed reel and take, on the drum, the number of pick lengths necessary for weft insertions during the passage from one reel to another. A variant of this method could consist in increasing the supplier's rotation speed for a short period, so as to provide an additional thread reserve on the drum. If such a reserve is established, the supplier may be immobilized for a fairly long period while providing the desired number of picks; in this case, there is ample time to tie a new supply reel. The device implementing the method provided by the invention mainly consists of elements intended to present the beginning of the thread of the new supply reel facing the thread being unwound, detection elements intended to follow the unwinding active supply coils and connection elements intended to connect the two wires when passing from one coil to the next coil. The construction of such devices is explained in detail in the following paragraphs.

Afin de mieux mettre en lumière les caractéristiques de l'invention, on trouvera ci-après, en guise d'exemples sans caractère limitatif, la description de quelques installations mettant en oeuvre la méthode prévue par l'invention, avec référence aux dessines annexés, où:

  • Les figures 1 à 4 représentent un dispositif conforme à l'invention en vue d'illustrer pas à pas la méthode prévue par l'invention;
  • la figure 5 représente un agrandissement de l'élément portant le repère F5 sur la figure 2;
  • les figures 6 à 8 représentent graphiquement, en fonction de la réserve de fil présente sur une bobine d'alimentation, la vitesse de rotation d'un fournisseur et la réserve de fil présente sur le fournisseur, dans le cas où l'on a constitué une réserve supplémentaire de fil sur le fournisseur, comme décrit précédemment;
  • les figures 9 à 11 représentent un second dispositif conforme à l'invention.
In order to better highlight the characteristics of the invention, the description of some installations using the method provided by the invention will be found below, by way of examples without limitation, with reference to the accompanying drawings, or:
  • Figures 1 to 4 show a device according to the invention in order to illustrate step by step the method provided by the invention;
  • Figure 5 shows an enlargement of the element marked F5 in Figure 2;
  • Figures 6 to 8 show graphically, as a function of the wire reserve present on a supply reel, the speed of rotation of a supplier and the wire reserve present on the supplier, in the case where one has constituted an additional supply of thread on the supplier, as described above;
  • Figures 9 to 11 show a second device according to the invention.

Selon les figures 1 à 4, l'alimentation en fil 1 à un dispositif tel qu'un fournisseur 2 d'une machine à tisser peut être réalisée par le dévidage du fil d'une première bobine d'alimentation 3, ce fil passant par exemple par un oeillet guide 4.According to FIGS. 1 to 4, the supply of thread 1 to a device such as a supplier 2 of a weaving machine can be carried out by the unwinding of the thread from a first supply reel 3, this thread passing through example with a guide eyelet 4.

Pour réaliser l'alimentation continue en fil prévue par l'invention, l'installation telle que représentée à la figure 1 comprend en outre une deuxième bobine d'alimentation 5, un dispositif 6 destiné à présenter le début 7 du fil 8 de la deuxième bobine d'alimentation 5 à proximité du fil 9 de la première bobine d'alimentation 3, un dispositif de connexion 10 destiné à relier les fils 8 et 9, ainsi que des capteurs 11 et 12 destinés à surveiller les réserves de fil sur les bobines d'alimentation 3 et 5, ces capteurs étant branchés, par exemple, à une urité de commande 13 chargée de piloter le dispositif de connexion 10. Le dispositif 6 destiné à présenter le début de fil 7 à proximité du fil 9 dévidé par la bobine active se compose, dans le premier mode d'exécution représenté, de deux oeillets guides 14 et 15 placés côte à côte et par lesquels passent, respectivement, les fils 8 et 9; ainsi que d'un pince-fil 16 retenant le début 7 du fil venant de la deuxième bobine d'alimentation 5. Le dispositif de connexion 10 peut être soit un noueur, soit un épissoir. La connexion par épissure est une méthode particulièrement indiquée en raison de sa rapidité, parce qu'elle n'entraîne aucun affaiblissement local du fil et parce qu'elle garantit la continuité du fil; en d'autres termes, un fil épissé peut être tissé sans compromettre ni le fonctionnement de certains organes sensibles en aval, ni l'aspect final du produit tissé.To carry out the continuous supply of wire provided for by the invention, the installation as shown in FIG. 1 further comprises a second supply coil 5, a device 6 intended to present the start 7 of the wire 8 of the second supply coil 5 near the wire 9 of the first supply coil 3, a connection device 10 intended to connect the wires 8 and 9, as well as sensors 11 and 12 intended to monitor the reserves of wire on the coils 3 and 5, these sensors being connected, for example, to a control unit 13 responsible for controlling the connection device 10. The device 6 intended to present the start of wire 7 near the wire 9 unwound by the coil active consists, in the first embodiment shown, of two guide eyelets 14 and 15 placed side by side and through which pass, respectively, the wires 8 and 9; as well as a wire clamp 16 retaining the start 7 of the wire coming from the second supply reel 5. The connection device 10 can be either a knotter or a splicer. The splicing is a particularly suitable method because of its speed, because it does not cause any local weakening of the wire and because it guarantees the continuity of the wire; in other words, a spliced wire can be woven without compromising either the operation of certain sensitive organs downstream, or the final appearance of the woven product.

Les phases successives du fonctionnement de l'installation sont représentées schématiquement aux figures 2 à 4. Au stade illustré à la figure 2, le capteur 11 constate que la réserve de fil sur la bobine d'alimentation 3 est pratiquement épuisée, sans l'être tout à fait. L'unité de commande 13 désactive alors le fournisseur de manière à mettre fin à l'amenée du fil 1, et active le dispositif de connection 10. Le début 7 du fil dévidé par la deuxième bobine d'alimentation 5 est relié au fil 9 de la première bobine 3. Le fil résiduel 17 restant sur la bobine d'alimentation 3 est coupé par le coupe-fil 18.The successive phases of the operation of the installation are shown diagrammatically in FIGS. 2 to 4. At the stage illustrated in FIG. 2, the sensor 11 finds that the reserve of wire on the supply coil 3 is practically exhausted, but is not absolutely. The control unit 13 then deactivates the supplier so as to end the feeding of the wire 1, and activates the connection device 10. The start 7 of the wire unwound by the second supply coil 5 is connected to the wire 9 of the first spool 3. The residual thread 17 remaining on the supply spool 3 is cut by the thread cutter 18.

ces opérations créent la situation représentée à la figure 3, dans laquelle le fil peut de nouveau être délivré au fournisseur 2 par le dispositif d'alimentation 1. La première bobine d'alimentation 3, c'est-à-dire le bobinot 19 et le fil résiduel 17, sont alors enlevés du porte-bobine.these operations create the situation represented in FIG. 3, in which the wire can again be delivered to the supplier 2 by the supply device 1. The first supply coil 3, that is to say the bobbin 19 and the residual wire 17 are then removed from the spool holder.

Dans une phase suivante, une nouvelle bobine d'alimentation 20 est montée à la place de la bobine 3 presque entièrement dévidée; le fil de cette nouvelle bobine est alors positionné dans le pince-fil et devient le début de fil 7. La séquence d'opérations que l'on vient de décrire peut alors être répétée, avec un passage de la bobine 5 à la bobine 20, analogue au passage précédent entre les bobines 3 et 5.In a following phase, a new supply coil 20 is mounted in place of the coil 3 almost entirely unwound; the wire of this new coil is then positioned in the wire clamp and becomes the start of wire 7. The sequence of operations just described can then be repeated, with a passage from coil 5 to coil 20 , similar to the previous passage between the coils 3 and 5.

Le mode de détection de quasi-épuisement de la bobine 3 au moyen du capteur 11 est illustré à la figure 5. Le capteur optique 11, placé à côté de la bobine d'alimentation 3, envoie un signal 21 qui est réfléchi par le bobinot 19 et qui est détecté par le capteur 11. Il est clair que le bobinot 19 ne réfléchira le signal que lorsque le nombre de spires présentes est réduit et que la surface du bobinot 19 devient visible. Pour assurer la réflexion du signal optique 21, le bobinot 19 peut être recouvert d'un revêtement hautement réfléchissant affectant, par exemple, la forme d'un ruban spiralé 22.The mode of detection of quasi-exhaustion of the coil 3 by means of the sensor 11 is illustrated in FIG. 5. The optical sensor 11, placed next to the supply coil 3, sends a signal 21 which is reflected by the coil 19 and which is detected by the sensor 11. It is clear that the coil 19 will only reflect the signal when the number of turns present is reduced and the surface of the coil 19 becomes visible. To ensure the reflection of the optical signal 21, the coil 19 can be covered with a highly reflective coating affecting, for example, the shape of a spiral ribbon 22.

Comme nous l'avons déjà mentionné dans l'introduction, l'activation du capteur 11 peut être suivie soit de la constitution d'une réserve de fil supplémentaire sur le fournisseur 2, préalablement à la mise à l'arrêt de la connexion du début de fil 7 au fil 9. Les conditions de ce processus sont représentées schématiquement aux graphiques des figures 6 à 8.As we have already mentioned in the introduction, the activation of the sensor 11 can be followed either by the constitution of an additional wire reserve on the supplier 2, before the termination of the connection from the start from wire 7 to wire 9. The conditions of this process are represented schematically in the graphs of FIGS. 6 to 8.

Pendant l'amenée normale du fil 1 au départ d'une bobine, par exemple la première bobine d'alimentation 3 dans l'exposé ci-dessus, la quantité de fil A présente sur cette bobine décroît régulièrement, phénomène représenté pour des motifs de simplicité par la courbe descendante 23 de la figure 6. Pendant le fonctionnement normal de l'alimentation, le régime du fournisseur 2, par exemple le nombre de tours effectué par le bras guide-fil 24, peut varier entre une valeur minimale N1 et une valeur maximale N2, condition représentée par la courbe 25 de la figure 7. Généralement, la réserve de fil R sur le tambour variera elle aussi entre deux valeurs R1 et R2, comme représenté par la courbe 27 de la figure 8; cette variation est due d'une part à la variation du nombre de tours effectués par le bras guide-fil 24 et, d'autre part, au dévidage du fil 9 selon un mouvement intermittent au départ du tambour 26.During the normal feeding of the wire 1 from a reel, for example the first supply reel 3 in the description above, the quantity of wire A present on this reel decreases regularly, phenomenon shown for reasons of simplicity by the downward curve 23 of FIG. 6. During the normal operation of the supply, the speed of the supplier 2, for example the number of turns made by the wire guide arm 24, can vary between a minimum value N1 and a maximum value N2, condition represented by curve 25 in FIG. 7. Generally, the wire reserve R on the drum will also vary between two values R1 and R2, as represented by curve 27 in FIG. 8; this variation is due on the one hand to the variation in the number of turns made by the wire guide arm 24 and, on the other hand, to the unwinding of the wire 9 according to an intermittent movement at the start of the drum 26.

Lors du dévidage de la bobine d'alimentation 3, la quantité de fil A atteindra une valeur minimale prédéterminée A1 à un moment t1, suite à quoi le capteur enverra un signal à l'unité de commande 13. Dès lors, le fournisseur 2 passera à son régime maximal N2, auquel il sera maintenu pendant un période X donnée. Il est clair que cette montée en régime aura pour effet de réduire encore la quantité de fil A présente sur la première bobine d'alimentation 3, dans le même temps que la réserve de fil R présente sur le fournisseur 2 s'accroît. Dès le moment t2 où la réserve de fil sur le fournisseur 2 aura atteint une valeur maximale prédéterminée R3, le fournisseur sera désactivé et freiné jusqu'à ce qu'il s'immobilise. Cependant, la machine à tisser restant en activité, la réserve de fil maximale R3 sera ramenée en peu de temps à un minimum absolu R0. A ce moment t3, le fournisseur devra de nouveau être activé afin que le tambour 26 puisse délivrer au moins une longueur de duite lors de l'insertion suivante. La période T correspondant à l'arrêt total du fournisseur 2, et qui est sensiblement égale à la différence t3 - t2, représente ici le délai de connexion du début 7 du fil de la deuxième bobine d'alimentation 5 au fil 9 de la première bobine d'alimentation 3 à l'aide du dispositif de connexion 10. Il est clair que l'importance de la réserve de fil R3 détermine la longueur de cette période T.When unwinding the supply reel 3, the quantity of wire A will reach a predetermined minimum value A1 at a time t1, after which the sensor will send a signal to the control unit 13. From then on, the supplier 2 will switch to its maximum speed N2, to which it will be maintained for a given period X. It is clear that this rise in speed will have the effect of further reducing the quantity of wire A present on the first supply reel 3, at the same time as the reserve of wire R present on the supplier 2 increases. From the moment t2 when the wire reserve on the supplier 2 has reached a predetermined maximum value R3, the supplier will be deactivated and braked until it stops. However, the weaving machine remaining in activity, the maximum yarn reserve R3 will be brought back in a short time to an absolute minimum R0. At this time t3, the supplier will have to be activated again so that the drum 26 can deliver at least one length of pick during the next insertion. The period T corresponding to the total shutdown of the supplier 2, and which is substantially equal to the difference t3 - t2, here represents the connection time from the start 7 of the wire of the second supply coil 5 to the wire 9 of the first supply coil 3 using the connection device 10. It is clear that the size of the wire reserve R3 determines the length of this period T.

La figure 9 représente un porte-bobine 28 consistant en une courroie de transport présentant successivement les bobines d'alimentation devant le dispositif d'alimentation et mettant en oeuvre la méthode prévue par l'invention. Le dispositif 6 évoqué ci-dessus, et destiné à présenter le début 7 du fil de la deuxième bobine d'alimentation 5 à proximité du fil 9 de la première bobine d'alimentation 3, se compose dans ce cas essentiellement du pince-fil 16 évoqué précédemment, placé ici à proximité de l'oeillet guide 4, et d'un guide-fil mobile 30 qui, au quasi-épuisement de la première bobine 3, peut déplacer le fil 9 sur une certaine distance pour le placer dans une position sensiblement parallèle par rapport au fil 8 de la deuxième bobine 5. Cette opération est illustrée à la figure 10. Après la mise en parallèle, le dispositif de connexion 10 est activé pour assembler les fils 8 et 9 soit par nouage, soit par une épissure. Entraînée par la courroie de transport, la nouvelle bobine vient ensuite se placer dans la position illustrée à la figure 11. La figure 11 représente également la manière dont le début 7 du fil venant de la bobine d'alimentation suivante 20 peut être recherché par un rechercheur de fil 31. Celui-ci peut se composer, par exemple, d'un embout aspirateur couvrant la surface de la bobine d'alimentation 20 et capable de prendre le début du fil 7, qui peut alors, à l'aide d'un dispositif accrocheur non représenté à la figure, être amené devant le pince-fil 16 pour y être retenu. Le bobinot de l'ancienne bobine d'alimentation, portant les spires de fil résiduel 17, est évacué.FIG. 9 represents a reel holder 28 consisting of a conveyor belt successively presenting the feed reels in front of the feed device and implementing the method provided by the invention. The device 6 mentioned above, and intended to present the start 7 of the wire of the second supply coil 5 near the wire 9 of the first supply coil 3, in this case consists essentially of the wire clamp 16 mentioned above, placed here near the guide eyelet 4, and a movable wire guide 30 which, when the first coil 3 is almost exhausted, can move the wire 9 a certain distance to place it in a substantially parallel position relative to the wire 8 of the second coil 5. This operation is illustrated in FIG. 10. After the paralleling, the connection device 10 is activated to join the wires 8 and 9 either by knotting or by a splice. Driven by the conveyor belt, the new spool is then placed in the position illustrated in FIG. 11. FIG. 11 also represents the way in which the start 7 of the thread coming from the following supply spool 20 can be sought by a wire finder 31. This can consist, for example, of a vacuum cleaner nozzle covering the surface of the supply coil 20 and capable of taking the start of wire 7, which can then, using an eye-catching device not shown in the figure, be brought before the wire clamp 16 to be retained there. The bobbin of the old supply coil, carrying the turns of residual wire 17, is evacuated.

Il faut noter encore que le porte-bobine 28 illustré aux figures 9 à 11 ne nécessite qu'un seul capteur 11, destiné au contrôle de la quantité de fil présente sur les bobines d'alimentation, puisque la courroie de transport les aura toujours amenées au même endroit lors du quasi-épuisement du fil en cours de dévidage.It should also be noted that the spool holder 28 illustrated in FIGS. 9 to 11 requires only a single sensor 11, intended for controlling the quantity of wire present on the supply spools, since the transport belt will always have brought them in the same place when the wire is almost exhausted during unwinding.

Claims (12)

1. Method of continuous feeding of thread from the feed coils in a weaving machine in which the entry of the thread is effected by means of supply mechanism, said supply mechanism consisting of a reserve stock of thread allowing the unwinding of the thread departing from the supply mechanism by an intermittent movement, said method essentially consisting of feeding a thread leaving a first coil (3); the presence of a second feed coil (5) whose beginning of the thread (7) is brought into the proximity of the thread (9) unwound from the first feed coil (3); the detection of the moment in which the first feed coil (3) is nearly completely unwound without being completely so, stopping the supply and connecting the beginning (7) of the thread coming off the second feed coil (5) to the thread unwound from the first feed coil (3); and resuming the feeding of thread from the second coil, characterized in that the feeding of the thread off said first coil (3) is carried out upon stopping on two conditions, firstly, the detection of said moment and secondly the fact that the supply mechanism is able to allow the introduction of the thread leaving the active feed coil to be interrupted for a short while; apart from that without interrupting the weaving; and in that the remaining thread (17) of the first feed coil (3) is cut in order to allow removal of that remaining thread (17).
2. Method according to claim 1, characterised in that the detection of the approaching exhaustion of the reserve thread on the first feed coil (3) is followed by the forming of an additional reserve of thread (R3) on the supply mechanism (2) by making this one rotate, in a given time (X), at maximum speed (N2), after which the supply mechanism will be stopped and the beginning (7) of the thread leaving the second coil (5) will be connected again with the thread wound off of the first feed coil (3).
3. Method according to claim 1, characterised in that following the detection of approaching exhaustion of the reserve thread on the first feed coil (3), the supply mechanism (2) is not stopped before the reserve of thread (R) on the supply mechanism (2) reaches an optimal level, knotting the beginning of thread (7) coming off the second feed coil (5) and thread (9) unwound from the first feed coil (3) only takes place afterwards.
4. Method according to one of the aforementioned claims, characterised in that detection of approaching exhaustion of the first feed coil (3) is effected by an optical device and based on the reflection of a signal on the core (19) of the first feed coil (3) when it is nearly completely unwound without being completely so.
5. Method according to one of the aforementioned claims, characterised in that the beginning of the thread (7) coming off the feed coil (5) is reconnected by a splice in the thread (9) unwound from the first feed coil (3).
6. Method according to one of the aforementioned claims 1 to 4, characterised in that the beginning (7) of the thread coming off the second feed coil (5) is reconnected by knotting to thread (9) unwound from the first feed coil (3).
7. Device suitable to apply the process according to one of the claims 1 to 6, especially in a weaving machine in which the introduction of the thread is effected by means of a supply mechanism, said device consisting of the elements (6) intended to introduce to each other, the beginning (7) of the thread leaving the second feed coil (5) and the thread (9) unwound from the first feed coil (3); of sensors (11,12) intended to identify the moment in which the active feed coil is almost unwound without being completely so; and of elements (10) intended to reconnect said two threads (7,9) characterised in that this device contains a control unit (13) connected to said sensors (11,12) and said elements (10) intended to reconnect the threads (7,9) preventing the control of said elements (10) according to the two conditions mentioned.
8. Device according to claim 7, characterised in that the elements (6) intended to bring together the beginning (7) of the thread coming off the second feed coil (5) and the thread (9) unwound from the first feed coil (3), essentially consist of two guiding eyelets (14,15) placed side by side, respectively guiding, the beginning of thread (7) and the thread (9), as well as a thread pincer (16) holding the beginning of thread (7).
9. Device according to claim 7, characterised in that the elements (6) intended to bring together, the beginning (7) of the thread coming off the second feed coil (5) and the thread (9) unwound from the first feed coil (3), essentially consist of an eyelets (4) guiding the thread (9) of the first feed coil (3), a thread pincer (16) holding the beginning (7) of the thread unwound from the second feed coil (5) and bringing this beginning (7) into the neighbourhood of thread (9) unwound from the first feed coil (3), as well as a movable thread guide (30) able to work on thread (9) unwound from the first feed coil (3) in order to carry it against or practically against the beginning (7) of the thread unwound from the second feed coil (5).
10. Device according to one of the claims 7 to 9, characterised in that it as well contains a thread seeker (31) allowing attaching the beginning (7) of the thread of each newly presented coil (20) and taking this beginning of the thread to the thread pincer (16).
11. Device according to one of the claims 7 to 10, characterised in that the aforementioned sensor (11) or sensors (11,12) are optical receivers watching the core (19) of the active feed coil (3) and working on the basis of the reflection of an optical signal (21) on that core.
12. Device according to claim 11, characterised in that the surfaces of the cores (19) of the utilized feed coils (3, 5, 20) is equipped with a highly reflective ribbon (22).
EP19880870043 1987-03-13 1988-03-10 Method for continuous thread feeding from bobbins and device for carrying out this method Expired - Lifetime EP0291484B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE8700260 1987-03-13
BE8700260A BE1000378A4 (en) 1987-03-13 1987-03-13 Process for a continuous WIRE SUPPLY FROM STOCK REELS AND DEVICE APPLYING THIS WEKWIJZE.

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EP0291484A1 EP0291484A1 (en) 1988-11-17
EP0291484B1 true EP0291484B1 (en) 1992-07-01

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EP19880870043 Expired - Lifetime EP0291484B1 (en) 1987-03-13 1988-03-10 Method for continuous thread feeding from bobbins and device for carrying out this method

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IT1305975B1 (en) * 1998-11-06 2001-05-23 3 T S R L EQUIPMENT FOR THE AUTOMATIC CHANGE OF THE FEED SPOOLS OF THE WEFT WIRE IN A TEXTILE FRAME, AND RELATED METHOD.
US6672045B2 (en) 2001-03-23 2004-01-06 E. I. Du Pont De Nemours And Company Apparatus and method for splicing threadlines by knot-induced thread twist entanglement
FI116672B (en) * 2003-06-27 2006-01-31 Nextrom Holding Sa Method and apparatus in connection with the treatment of a fibrous product
EP1686086A1 (en) * 2005-01-28 2006-08-02 Schärer Schweiter Mettler AG Method and apparatus for changing a supply bobbin
EP2163667B1 (en) * 2008-09-12 2011-11-23 Karl Mayer Textilmaschinenfabrik GmbH Rotating creel of a sample warper and sample warper
EP2284303B1 (en) * 2009-08-12 2011-11-23 Karl Mayer Textilmaschinenfabrik GmbH Rotary creel of a sample warping machine, sample warping machine and method for measuring a bobbin diameter
EP2540882B1 (en) * 2011-06-28 2013-09-18 Karl Mayer Textilmaschinenfabrik GmbH Sample warper
CN109052046A (en) * 2018-07-17 2018-12-21 河南巨力钢丝绳制造有限公司 Continuous automatic wire rod pay off rack
DE102019112554B4 (en) * 2019-05-14 2020-12-17 Cetex Institut gGmbH Method and device for the continuous processing of several rovings
CN113682891B (en) * 2021-09-07 2023-05-19 巨石集团有限公司 Single-head double-split cake winding machine and cake winding method thereof

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Publication number Priority date Publication date Assignee Title
BE493935A (en) * 1949-03-31
DE1535188A1 (en) * 1965-08-28 1970-08-20 Reiners Walter Dr Ing Bobbin creels for textile machines
DE2700974A1 (en) * 1977-01-12 1978-07-13 Schlafhorst & Co W Procedure for joining thread ends - using automatic thread searching and knotting equipment which may also control winding-spool changes

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BE1000378A4 (en) 1988-11-16
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DE3872449D1 (en) 1992-08-06

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