EP0433216B1 - Weft distributing device for a multiphase linear shed loom with air picking - Google Patents

Weft distributing device for a multiphase linear shed loom with air picking Download PDF

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Publication number
EP0433216B1
EP0433216B1 EP90810754A EP90810754A EP0433216B1 EP 0433216 B1 EP0433216 B1 EP 0433216B1 EP 90810754 A EP90810754 A EP 90810754A EP 90810754 A EP90810754 A EP 90810754A EP 0433216 B1 EP0433216 B1 EP 0433216B1
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EP
European Patent Office
Prior art keywords
filling thread
distributor mechanism
filling
picking
thread distributor
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
EP90810754A
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German (de)
French (fr)
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EP0433216A1 (en
Inventor
Theodor Wuest
Marcel Christe
Alois Steiner
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Itema Switzerland Ltd
Original Assignee
Sultex AG
Maschinenfabrik Rueti AG
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Publication of EP0433216A1 publication Critical patent/EP0433216A1/en
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    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D41/00—Looms not otherwise provided for, e.g. for weaving chenille yarn; Details peculiar to these looms
    • D03D41/005—Linear-shed multiphase looms

Definitions

  • the invention relates to a weft distributing device of a row shed loom with air intake. Such a device is described in EP-A-0 143 860.
  • the interfaces for the weft are located relatively far from the fabric wheel and discontinuous movements of transmission elements are necessary for the distribution of the weft.
  • Another advantageous embodiment is the subject of the present invention. It solves the task of distributing and blowing into the different weft channels of a weaving rotor with low acceleration forces in the weft thread.
  • the object is achieved in that the device has a stationary part and a part which rotates with the weaving rotor and which have a common rotationally symmetrical separating and sealing surface, via which the transfer of weft threads takes place, and each shot channel has a shooting tube on the rotating part Part is assigned in which a feed nozzle, which is positioned in the fixed part, blows the weft thread by means of air.
  • a weft distributing device of a row shed loom with air intake is shown.
  • the warp threads 9 from the warp beam 1 are guided tangentially to a rotating weaving rotor 4 via deflections 3 and deflected within a certain deflection area by combs 6, which are arranged in rows to form weft channels 7, for shed formation.
  • weft threads 10 are inserted, which are taken along with the combs dipping through the warp threads until the newly formed cloth runs tangentially.
  • the cloth is wound on the fabric tree 2.
  • the weft threads 10 are distributed by a thread feed device 31 to a plurality of weft channels 7 of a weaving rotor 4 in that the device has a stationary part 21 and a part 11 which rotates with the weaving rotor 4 and which have a common separating and sealing surface 20 in a rotationally symmetrical surface.
  • each weft channel 7 is assigned a shooting tube 12 on the rotating part 11, into which a feed nozzle 22, which is positioned in the stationary part 21, blows the weft thread 10 by means of air.
  • Each feed nozzle 22 draws from a thread feed device 31 assigned to it a continuously supplied weft thread 10, the speed of which can be set in a fixed ratio to the rotational speed of the weaving rotor 4.
  • the orifices 15 of the shooting tubes 12 lie on a shooting circle 8 and are evenly distributed there for each feed nozzle 22 and offset from one feed nozzle to the next at a weft channel distance.
  • the transition of the weft thread from the stationary to the co-rotating part takes place from a connecting channel 24 in the stationary part 21, which describes a circular arc piece in the direction of rotation and is open to the separating and sealing surface 20, to a take-over channel 14 which is in the co-rotating part 11 with the stripping shoulder 13 of the shooting tube 12 begins, which continues in the direction of rotation as a circular arc piece with the same diameter as the connecting channel and which is open to the separating and sealing surface, so that over time from the removal of an opening edge 16 on a fixed edge 27 until the arrival of the stripping shoulder 13 no blind spaces have to be passed at the edge 27 when entering a newly formed weft thread tip.
  • the scraper shoulder 13 goes away from the separating and sealing surface 20 at approximately a right angle. From Fig. 3 it follows that the preceding stripping shoulder 13a and its associated shot tube 12 over a certain time are open at the same time as the subsequent shooting tube 12 to the connecting channel 24, so that the new weft thread tip created in the clamping and cutting device 32 can be withdrawn and inserted via the subsequent shooting tube 12.
  • the coaxially arranged feed nozzle 22 and auxiliary nozzle 26 blow against the direction of rotation at an acute angle to the center line of the connecting channel 24 and act as an injector to counteract this seen in the direction of rotation, on the one hand generates an overpressure in the area behind the nozzle opening via a mixing section and on the other hand generates a negative pressure in relation to the atmosphere in the area in front of the nozzle opening.
  • an auxiliary nozzle with a square outlet cross section which coaxially includes a feed nozzle with a circular cross section, has proven to be advantageous.
  • the thread feed device 31 delivers the weft thread 10 to the weft circle at a higher speed than the circumferential speed, a thread loop is created in the connecting channel to the new shooting tube 12, as long as the weft thread is clamped and cut at the outlet of the associated shooting tube 12. After cutting and releasing the new weft thread tip, the loop continues into an elongated weft thread within the weft distribution device.
  • relay nozzles 33 are attached along the weft channels, which support the weft insertion from the shooting tubes 12. Clamping and cutting devices 32 are between the bullet tube 12 and the firing channel formed from combs 6 7 positioned.
  • the cutting can be carried out with a stationary tool into which the weft threads 10 inevitably run with the rotational movement of the mouth 15 and the weft channel 7.
  • the inserted weft thread 10 must be clamped, cut and released as a new weft thread tip in predetermined circulating positions with respect to the stationary part 21, for example with the feed and auxiliary nozzles 22, 26.
  • the size and the time course of the pulse of the air flow from the feed nozzle 22 and / or auxiliary nozzle 26 is controlled as a function of the circulating position of the associated weft thread 10.
  • the air flow in the guide channels 24, 14, 12 and the air flow of the relay nozzles create a tensile stress in the weft thread, which causes it to rest against the inner diameters of the circular arc pieces from the connecting channel 24 and from the take-over channel.
  • the weft thread 10 moves more towards the channel base and away from the separating and sealing surface 20.
  • the weft distributing devices shown here can be used to shoot weft threads 10 into a weaving rotor 4 from both sides, with correspondingly more weft channels 7 forming compartments, both systems having to be offset by a weft channel division and the relay nozzles of both systems being oriented in opposite directions have to.

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

Description

Die Erfindung betrifft eine Schussfadenverteilvorrichtung einer Reihenfachwebmaschine mit Lufteintrag. Eine derartige Vorrichtung ist in der EP-A-0 143 860 beschrieben. Die Schnittstellen für den Schussfaden liegen dort relativ weit vom Geweberad entfernt und es sind diskontinuierliche Bewegungen von Uebertragungselementen für die Verteilung der Schussfäden notwendig. Eine weitere, vorteilhafte Ausführung ist Gegenstand der vorliegenden Erfindung. Sie löst die Aufgabe, mit geringen Beschleunigungskräften im Schussfaden die Verteilung auf und das Einblasen in die verschiedenen Schusskanäle eines Webrotors vorzunehmen. Gemäss der Erfindung wird die Aufgabe gelöst, indem die Vorrichtung einen ortsfesten Teil und einen mit dem Webrotor mitrotierenden Teil aufweist, die eine gemeinsame rotationssymmetrische Trenn-und Dichtfläche besitzen, über die die Übergabe von Schussfäden stattfindet, und indem jedem Schusskanal ein Einschiessrohr auf dem mitrotiernden Teil zugeordnet ist, in welches eine Speisedüse, die im ortsfesten Teil positioniert ist, den Schussfaden mittels Luft einbläst.The invention relates to a weft distributing device of a row shed loom with air intake. Such a device is described in EP-A-0 143 860. The interfaces for the weft are located relatively far from the fabric wheel and discontinuous movements of transmission elements are necessary for the distribution of the weft. Another advantageous embodiment is the subject of the present invention. It solves the task of distributing and blowing into the different weft channels of a weaving rotor with low acceleration forces in the weft thread. According to the invention, the object is achieved in that the device has a stationary part and a part which rotates with the weaving rotor and which have a common rotationally symmetrical separating and sealing surface, via which the transfer of weft threads takes place, and each shot channel has a shooting tube on the rotating part Part is assigned in which a feed nozzle, which is positioned in the fixed part, blows the weft thread by means of air.

Die Vorteile der Erfindung sind darin zu sehen, dass die Verteilung und das Umsteuern der Schussfäden zwangsläufig über geschlossene Kanäle erfolgen, deren Bildung durch die Rotation des Webrotors stattfindet.The advantages of the invention can be seen in the fact that the weft threads are inevitably distributed and reversed via closed channels, the formation of which takes place through the rotation of the weaving rotor.

Im folgenden wird die Erfindung anhand von einem Ausführungsbeispiel beschrieben. Es zeigt:

Fig. 1
die schematische Anordnung des Kettfadenlaufs in einer Reihenfachwebmaschine mit Webrotor;
Fig. 2
schematisch den Schussfadenübergang vom ortsfesten Teil zum mitrotierenden Teil einer Schussfadenverteilvorrichtung, wobei der ortsfeste Teil seitlich weggeklappt ist;
Fig. 3
einen schematischen Ausschnitt aus einer Schussfadenverteilvorrichtung, die quer zur Trenn- und Dichtfläche zwischen ortsfestem Teil und mit rotierendem Teil entlang des Fadenverlaufs aufgeschnitten ist;
Fig. 4
einen radialen Ausschnitt aus der schematischen Darstellung eines Webrotors und einer Schussfadenverteilvorrichtung mit einem ortsfesten und einem mitrotierenden Teil;
Fig. 5
einen Schnitt durch eine Hilfsdüse mit koaxial angeordneter Speisedüse im ortsfesten Teil einer Schussfadenverteilvorrichtung.
The invention is described below using an exemplary embodiment. It shows:
Fig. 1
the schematic arrangement of the warp thread in a row shed loom with weaving rotor;
Fig. 2
schematically the weft transition from the stationary part to the rotating part of a weft distributing device, the stationary part being folded away to the side;
Fig. 3
a schematic section of a weft distributing device, which is cut across the separating and sealing surface between the stationary part and with the rotating part along the course of the thread;
Fig. 4
a radial section of the schematic representation of a weaving rotor and a weft distributing device with a fixed and a rotating part;
Fig. 5
a section through an auxiliary nozzle with coaxially arranged feed nozzle in the stationary part of a weft distributing device.

In den Figuren ist eine Schussfadenverteilvorrichtung einer Reihenfachwebmaschine mit Lufteintrag gezeigt. Die Kettfäden 9 vom Kettbaum 1 werden über Umlenkungen 3 tangential an einen drehenden Webrotor 4 geführt und innerhalb eines bestimmten Umlenkbereiches von Kämmen 6, die reihenweise zu Schusskanälen 7 angeordnet sind, zur Fachbildung ausgelenkt. Während der Drehung der so gebildeten Fächer in Drehrichtung 5 werden Schussfäden 10 eingetragen, die mit den durch die Kettfäden tauchenden Kämmen bis zum tangentialen Ablauf des neu gebildeten Tuchs mitgenommen werden. Das Tuch wird auf dem Warenbaum 2 aufgewickelt.In the figures, a weft distributing device of a row shed loom with air intake is shown. The warp threads 9 from the warp beam 1 are guided tangentially to a rotating weaving rotor 4 via deflections 3 and deflected within a certain deflection area by combs 6, which are arranged in rows to form weft channels 7, for shed formation. During the rotation of the compartments formed in this way in the direction of rotation 5, weft threads 10 are inserted, which are taken along with the combs dipping through the warp threads until the newly formed cloth runs tangentially. The cloth is wound on the fabric tree 2.

Erfindungsgemäss werden die Schussfäden 10 von einer Fadenzuführeinrichtung 31 auf mehrere Schusskanäle 7 eines Webrotors 4 verteilt, indem die Vorrichtung einen ortsfesten Teil 21 und einen mit dem Webrotor 4 mitrotierenden Teil 11 aufweist, die in einer rotationssymmetrischen Fläche eine gemeinsame Trenn- und Dichtfläche 20 besitzen, über die die Uebergabe von Schussfäden 10 stattfindet und indem jedem Schusskanal 7 ein Einschiessrohr 12 auf dem mitrotierenden Teil 11 zugeordnet ist, in welches eine Speisedüse 22, die im ortsfesten Teil 21 positioniert ist, den Schussfaden 10 mittels Luft einbläst.According to the invention, the weft threads 10 are distributed by a thread feed device 31 to a plurality of weft channels 7 of a weaving rotor 4 in that the device has a stationary part 21 and a part 11 which rotates with the weaving rotor 4 and which have a common separating and sealing surface 20 in a rotationally symmetrical surface. Via which the transfer of weft threads 10 takes place and in that each weft channel 7 is assigned a shooting tube 12 on the rotating part 11, into which a feed nozzle 22, which is positioned in the stationary part 21, blows the weft thread 10 by means of air.

Jede Speisedüse 22 zieht von einer ihr zugeordneten Fadenzuführeinrichtung 31 einen kontinuierlich zugelieferten Schussfaden 10 ab, dessen Geschwindigkeit in einem festen Verhältnis zur Drehzahl des Webrotors 4 einstellbar ist. Von jeder Speisedüse 22 werden die Schussfäden zyklisch in eine bestimmte Anzahl von m = 4 ihr zugeordneten Einschiessrohre 12 eingeblasen, deren Mündungen 15 in der Achse des jeweiligen Schusskanals 7 liegen, das heisst, das Produkt der Anzahl n = 3 mit Fadenzuführeinrichtungen zugeführten Schussfäden 10 und der Anzahl m = 4 von einem der Schussfäden 10 belieferten Einschiessrohre 12 entspricht der Anzahl von 12 Schusskanälen 7 am Webrotor 4.Each feed nozzle 22 draws from a thread feed device 31 assigned to it a continuously supplied weft thread 10, the speed of which can be set in a fixed ratio to the rotational speed of the weaving rotor 4. The weft threads are removed from each feed nozzle 22 Cyclically blown into a certain number of m = 4 shot tubes 12 assigned to it, the openings 15 of which lie in the axis of the respective weft channel 7, that is to say the product of the number n = 3 weft threads 10 fed with thread feed devices and the number m = 4 of one of the weft threads 10 supplied to the shooting tubes 12 corresponds to the number of 12 weft channels 7 on the weaving rotor 4.

Entsprechend den Schusskanälen 7 am Webrotor 4 liegen die Mündungen 15 der Einschiessrohre 12 auf einem Einschiesskreis 8 und sind dort für jede Speisedüse 22 gleichmässig verteilt und von einer Speisedüse zur nächsten in einem Schusskanalabstand versetzt.Corresponding to the weft channels 7 on the weaving rotor 4, the orifices 15 of the shooting tubes 12 lie on a shooting circle 8 and are evenly distributed there for each feed nozzle 22 and offset from one feed nozzle to the next at a weft channel distance.

Der Uebergang des Schussfadens vom ortsfesten zum mitrotierenden Teil erfolgt von einem Verbindungskanal 24 im ortsfesten Teil 21, der in Drehrichtung ein Kreisbogenstück beschreibt und zur Trenn- und Dichtfläche 20 hin offen ist, zu einem Uebernahmekanal 14, der im mitrotierenden Teil 11 mit der Abstreifschulter 13 des Einschiessrohres 12 beginnt, der sich in Drehrichtung als Kreisbogenstück mit dem gleichen Durchmesser wie der Verbindungskanal fortsetzt und der zur Trenn- und Dichtfläche hin offen ist, damit über die Zeit vom Wegfahren einer öffnenden Kante 16 an einer ortsfesten Kante 27 bis zur Ankunft der Abstreifschulter 13 an der Kante 27 keine Blindräume beim Eintragen einer neu gebildeten Schussfadenspitze passiert werden müssen. Die m = 4 Uebernahmekanäle 14 sind gleichmässig auf dem mit dem Verbindungskanal 24 gemeinsamen Kreis in der Trenn- und Dichtfläche 20 verteilt. Die Abstreifschulter 13 geht annähernd im rechten Winkel von Trenn- und Dichtfläche 20 weg. Aus Fig. 3 ergibt sich, dass die vorangehende Abstreifschulter 13a und ihr zugehöriges Einschiessrohr 12 über eine gewisse Zeit gleichzeitig mit dem nachfolgenden Einschiessrohr 12 zum Verbindungskanal 24 hin offen sind, damit die in der Klemm- und Schneidvorrichtung 32 durch Schnitt entstandene neue Schussfadenspitze zurückgezogen und über das nachfolgende Einschiessrohr 12 eingetragen werden kann.The transition of the weft thread from the stationary to the co-rotating part takes place from a connecting channel 24 in the stationary part 21, which describes a circular arc piece in the direction of rotation and is open to the separating and sealing surface 20, to a take-over channel 14 which is in the co-rotating part 11 with the stripping shoulder 13 of the shooting tube 12 begins, which continues in the direction of rotation as a circular arc piece with the same diameter as the connecting channel and which is open to the separating and sealing surface, so that over time from the removal of an opening edge 16 on a fixed edge 27 until the arrival of the stripping shoulder 13 no blind spaces have to be passed at the edge 27 when entering a newly formed weft thread tip. The m = 4 take-over channels 14 are evenly distributed on the circle common to the connecting channel 24 in the separating and sealing surface 20. The scraper shoulder 13 goes away from the separating and sealing surface 20 at approximately a right angle. From Fig. 3 it follows that the preceding stripping shoulder 13a and its associated shot tube 12 over a certain time are open at the same time as the subsequent shooting tube 12 to the connecting channel 24, so that the new weft thread tip created in the clamping and cutting device 32 can be withdrawn and inserted via the subsequent shooting tube 12.

Um für das Zurückziehen der neu gebildeten Schussfadenspitze eine Rückströmung und für das Einblasen mit dem nachfolgenden Einschiessrohr eine Düsenwirkung zu erzielen, blasen die koaxial angeordnete Speisedüse 22 und Hilfsdüse 26 entgegen der Drehrichtung in spitzem Winkel zur Mittellinie des Verbindungskanals 24 und wirken als Injektor, der entgegen der Drehrichtung gesehen, einerseits über eine Mischstrecke einen Ueberdruck im Bereich hinter der Düseneinmündung erzeugt und andererseits im Bereich vor der Düsenmündung einen Unterdruck gegenüber der Atmosphäre erzeugt. Um diesen Effekt bei geringem Platzbedarf zu erreichen, hat sich eine Hilfsdüse mit quadratischem Austrittsquerschnitt, die koaxial eine Speisedüse mit Kreisquerschnitt einschliesst, als vorteilhaft erwiesen. Wenn die Fadenzuführeinrichtung 31 den Schussfaden 10 mit einer grösseren Geschwindigkeit als der Umfangsgeschwindigkeit am Einschusskreis anliefert, entsteht eine Fadenschlaufe im Verbindungskanal zum neuen Einschiessrohr 12 hin, solange der Schussfaden am Austritt des davorliegenden zugehörigen Einschiessrohres 12 geklemmt und geschnitten wird. Nach dem Schneiden und Freigeben der neuen Schussfadenspitze geht die Schlaufe noch innerhalb der Schussverteilvorrichtung in einen gestreckten Schussfaden über. Am Webrotor 4 sind längs der Schusskanäle 7 Stafettendüsen 33 angebracht, die den Schusseintrag aus den Einschiessrohren 12 unterstützen. Klemm- und Schneidvorrichtungen 32 sind zwischen Einschussrohr 12 und dem aus Kämmen 6 gebildeten Schusskanal 7 positioniert. Das Schneiden kann mit einem ortsfesten Werkzeug vorgenommen werden, in welches die Schussfäden 10 zwangsläufig mit der Drehbewegung von Mündung 15 und Schusskanal 7 hineinlaufen. Um den Injektoreffekt bei der richtigen Stellung der Führungskanäle 12, 24, 14 auszunutzen, muss der eingetragene Schussfaden 10 in vorgegebenen Umlaufpositionen zum ortsfesten Teil 21, z.B. zu den Speise- und Hilfsdüsen 22, 26, geklemmt, geschnitten und als neue Schussfadenspitze freigegeben werden. Ebenso wird die Grösse und der zeitliche Verlauf des Impulses der Luftströmung aus Speisedüse 22 und/oder Hilfsdüse 26 in Abhängigkeit von der Umlaufposition des zugehörigen Schussfadens 10 gesteuert. Während des Eintragens des Schussfadens in den Schusskanal 7 erzeugt die Luftströmung in den Führungskanälen 24, 14, 12 und die Luftströmung der Stafettendüsen eine Zugspannung im Schussfaden, die ihn an den Innendurchmessern der Kreisbogenstücke vom Verbindungskanal 24 und vom Uebernahmekanal anliegen lässt. Durch Hinterschneiden dieser inneren Flächen verlagert sich der Schussfaden 10 mehr zum Kanalgrund und von der Trenn- und Dichtfläche 20 weg.In order to achieve a backflow for pulling back the newly formed weft thread tip and a nozzle effect for blowing in with the following shooting tube, the coaxially arranged feed nozzle 22 and auxiliary nozzle 26 blow against the direction of rotation at an acute angle to the center line of the connecting channel 24 and act as an injector to counteract this seen in the direction of rotation, on the one hand generates an overpressure in the area behind the nozzle opening via a mixing section and on the other hand generates a negative pressure in relation to the atmosphere in the area in front of the nozzle opening. In order to achieve this effect with a small footprint, an auxiliary nozzle with a square outlet cross section, which coaxially includes a feed nozzle with a circular cross section, has proven to be advantageous. If the thread feed device 31 delivers the weft thread 10 to the weft circle at a higher speed than the circumferential speed, a thread loop is created in the connecting channel to the new shooting tube 12, as long as the weft thread is clamped and cut at the outlet of the associated shooting tube 12. After cutting and releasing the new weft thread tip, the loop continues into an elongated weft thread within the weft distribution device. On the weaving rotor 4 7 relay nozzles 33 are attached along the weft channels, which support the weft insertion from the shooting tubes 12. Clamping and cutting devices 32 are between the bullet tube 12 and the firing channel formed from combs 6 7 positioned. The cutting can be carried out with a stationary tool into which the weft threads 10 inevitably run with the rotational movement of the mouth 15 and the weft channel 7. In order to take advantage of the injector effect when the guide channels 12, 24, 14 are in the correct position, the inserted weft thread 10 must be clamped, cut and released as a new weft thread tip in predetermined circulating positions with respect to the stationary part 21, for example with the feed and auxiliary nozzles 22, 26. Likewise, the size and the time course of the pulse of the air flow from the feed nozzle 22 and / or auxiliary nozzle 26 is controlled as a function of the circulating position of the associated weft thread 10. During the insertion of the weft thread into the weft channel 7, the air flow in the guide channels 24, 14, 12 and the air flow of the relay nozzles create a tensile stress in the weft thread, which causes it to rest against the inner diameters of the circular arc pieces from the connecting channel 24 and from the take-over channel. By undercutting these inner surfaces, the weft thread 10 moves more towards the channel base and away from the separating and sealing surface 20.

Als weitere Unterstützung beim Umsteuern der Luftströmung vom vorangehenden zum zugehörigen nachfolgenden Einschiessrohr 12 hat es sich als vorteilhaft erwiesen, mindestens eine Abblaseöffnung 17 im mitrotierenden Teil 11 oder in der ortsfesten Begrenzungsfläche des Uebernahmekanals 14 anzubringen. Je abrupter die Abzweigung und je kleiner die Weite dieser Oeffnungen in Fadenlaufrichtung ist, desto geringen ist die Gefahr für ein Hängenbleiben des Schussfadens. Da die Wirkung der Abblaseöffnungen vor allem während des Umsteuerns der Luftströmung gefordert ist, wird ihr ein Sammelraum mit einstellbarem Ausflusswiderstand nachgeschaltet, wobei der Ausfluss über bestimmte Drehwinkel des Einschussrohres 12 zum ortsfesten Teil 21 vollständig geschlossen werden kann.As a further aid in reversing the air flow from the preceding to the associated following injection tube 12, it has proven to be advantageous to provide at least one blow-off opening 17 in the rotating part 11 or in the fixed boundary surface of the take-over channel 14. The more abrupt the branch and the smaller the width of these openings in the thread running direction, the lower the risk of the weft thread getting caught. Since the effect of the blow-off openings is required above all during the reversal of the air flow, it is followed by a collecting space with an adjustable outflow resistance, the outflow being over certain angles of rotation of the Bullet tube 12 to the stationary part 21 can be completely closed.

Um zu grosse Luftverluste und ein Klemmen des Schussfadens 10 in der Trenn- und Dichtfläche 20 zu vermeiden, sind verschiede Massnahmen möglich. Zunächst kann man den Abstand der ortsfesten Fläche zur mitrotierenden Fläche auf weniger als 0,2 mm begrenzen oder die Flächen als Gleitflächen mit einer einstellbaren Anpresskraft aufeinander laufen lassen, was eine verschleissfeste Materialpaarung mit guten Trockenlaufeigenschaften voraussetzt und durch Zugabe eines Schmiermittels unterstützt werden kann. Eine weitere Massnahme besteht im Anbringen von Dichtleisten oder von Sperrluft- oder Entlüftungskanälen, die an der Dichtfläche 20 wirken, indem sie Uebernahme- und Verbindungskanäle umgeben.Various measures are possible in order to avoid excessive air losses and jamming of the weft thread 10 in the separating and sealing surface 20. First you can limit the distance between the stationary surface and the rotating surface to less than 0.2 mm or let the surfaces run on each other as sliding surfaces with an adjustable contact pressure, which requires wear-resistant material pairing with good dry-running properties and can be supported by adding a lubricant. Another measure consists in attaching sealing strips or sealing air or ventilation ducts which act on the sealing surface 20 by surrounding takeover and connecting ducts.

Die hier gezeigten Schussfadenverteilvorrichtungen können dazu benutzt werden, von beiden Seiten Schussfäden 10 in einen Webrotor 4 einzuschiessen, wobei entsprechend mehr Schusskanäle 7, die Fächer bilden, vorhanden sein müssen und beide Systeme um eine Schusskanalteilung versetzt sein müssen und die Stafettendüsen beider Systeme gegenläufig orientiert sein müssen.The weft distributing devices shown here can be used to shoot weft threads 10 into a weaving rotor 4 from both sides, with correspondingly more weft channels 7 forming compartments, both systems having to be offset by a weft channel division and the relay nozzles of both systems being oriented in opposite directions have to.

Claims (32)

  1. A mechanism for distributing the filling threads from
       a thread feeder device to a number of picking channels in the weaving rotor of a series-shed loom having picking by air, characterized in that the mechanism exhibits a stationary part (21) and a part (11) which rotates together with the weaving rotor (4), the said parts having in an axially symmetrical plane a common separating and sealing face (20) through which the transfer of filling threads (10) takes place, and that with each picking channel (7) there is associated on the co-rotating part (11) a picking-tube (12) into which a feeder nozzle (22) which is positioned in the stationary part (21) blows the filling thread (10) by means of air.
  2. A filling thread distributor mechanism as in Claim 1,
       characterized in that the thread feeder device (31) delivers the filling threads (10) continuously at a speed which may be set at a fixed ratio to the r.p.m. of the weaving rotor (4).
  3. A filling thread distributor mechanism
       as in Claim 1 or 2, characterized in that the rotating part (11) is connected firmly to the weaving rotor (4) whilst the stationary part (21) is connected to the weaving rotor (4) via bearings (25) and exhibits means (28) which secure it to the machine frame against turning.
  4. A filling thread distributor mechanism
       as in one of the Claims 1 to 3, characterized in that the product of the number n of filling threads (10) fed to the distributor mechanism by the thread feeder device (31) and the number m of picking-tubes (12) supplied with one of the filling threads (10), corresponds with the number of picking channels (7) on the weaving rotor (4).
  5. A filling thread distributor mechanism
       as in one of the Claims 1 to 4, characterized in that the m picking-tubes (12) which are supplied with one filling thread (10) lie with their mouths (15) on the axes of the respective picking channels (7) and are staggered at the pitch of n picking channel pitches along one picking circle (8) of the weaving rotor (4).
  6. A filling thread distributor mechanism
       as in one of the Claims 1 to 5, characterized in that each feeder nozzle (22) opens into a separate connecting channel (24) in the stationary part (21), the said connecting channel (24) describing a piece of a circular arc in the direction (5) of rotation and being open towards the separating and sealing face (20).
  7. A filling thread distributor mechanism
       as in one of the Claims 1 to 6, characterized in that a number m of transfer channels (14) is associated in the co-rotating part (11) with each connecting channel (24) and with respect to the latter they lie at m equal pitches along a circle on the separating and sealing face (20) and in the separating and sealing face (20) exhibit openings common to the connecting channel (24).
  8. A filling thread distributor mechanism
       as in one of the Claims 1 to 7, characterized in that the picking-tubes (12) start at a stripping-shoulder (13) approximately at right angles to the separating and sealing face (20) and end at a mouth (15) the axis of which lies on the axis of the associated picking channel (7).
  9. A filling thread distributor mechanism
       as in one of the Claims 1 to 8, characterized in that the feeder nozzles (22) blow into the respective connecting channels (24) against the direction (5) of rotation at acute angles to their centrelines.
  10. A filling thread distributor mechanism as in Claim 9,
       characterized in that auxiliary nozzles (26) assist the feeder nozzles (22) by blowing into the respective connecting channels (24) against the direction (5) of rotation at acute angles to their centrelines.
  11. A filling thread distributor mechanism as in Claim 10,
       characterized in that the airflow from the auxiliary nozzle (26) leaves it in parallel with the direction of the airflow from the feeder nozzle (22).
  12. A filling thread distributor mechanism
       as in Claim 10 or 11, characterized in that the outlet cross-section of the auxiliary nozzle (26) forms a square which encloses coaxially the outlet from a feeder nozzle (22) of circular cross-section.
  13. A filling thread distributor mechanism
       as in Claim 10 or 11, characterized in that in the connecting channel (24) the nozzles (22, 26) act against the direction of rotation as injectors which, looking against the direction of rotation, generate on the one hand over a mixing section an overpressure in the region behind the nozzle mouth, and on the other hand in the region in front of the nozzle mouth a pressure reduced with respect to atmosphere.
  14. A filling thread distributor mechanism
       as in one of the Claims 1 to 9, characterized in that a clamping and cutting mechanism (32) is positioned between the mouth (15) of the picking tube (12) and the entry to the picking channels (7).
  15. A filling thread distributor mechanism as in Claim 14,
       characterized in that from time to time at certain predetermined angles of twist of the picking channels (7) with respect to the feeder nozzles (22) a clamping and cutting mechanism (32) clamps and/or cuts the associated filling thread (10).
  16. A filling thread distributor mechanism
       as in Claim 14 or 15, characterized in that the cutting part is made as a once-only stationary device which necessarily cuts every filling thread (10), through its feed in the direction (5) of rotation.
  17. A filling thread distributor mechanism
       as in one of the Claims 13 to 16, characterized in that the nozzles (22, 26) acting as injectors suck back into the connecting channel (24) the new tip of the filling thread which arises through the cutting in the clamping and cutting mechanism (32), and stretch out the filling thread against the direction of rotation towards the newly opened picking tube (12).
  18. A filling thread distributor mechanism
       as in one of the Claims 13 to 17, characterized in that the airflow from the feeder nozzle (22) and/or the auxiliary nozzle (26) is controlled as regards the strength and duration of its impulse and that the clamping and cutting mechanism (32) is controlled in dependence upon the position of the picking tube (12) relative to the nozzles (22, 26).
  19. A filling thread distributor mechanism
       as in one of the Claims 1 to 9, characterized in that the connecting channels (24) exhibit undercuts away from the separating and sealing face (20).
  20. A filling thread distributor mechanism
       as in one of the Claims 1 to 9, characterized in that for the reversal of the direction of the airflow towards the next picking tube (12) at least one blow-off opening (17) is fitted in the co-rotating part (11) or in the stationary part (21).
  21. A filling thread distributor mechanism as in Claim 20,
       characterized in that, looking in the direction of run of the filling thread, the blow-off openings (17) branch away from the channel wall at an angle of deflection greater than or equal to 90 degrees.
  22. A filling thread distributor mechanism
       as in Claim 20 or 21, characterized in that the blow-off openings (17) turn away from the transfer channel (14) at a sharp edge and in the direction of run of the filling thread exhibit a width of less than 1.5 mm.
  23. A filling thread distributor mechanism
       as in one of the Claims 20 to 22, characterized in that the blow-off openings (17) from one transfer channel (14) open into a buffer chamber (18) which exhibits a discharge opening (19) having an adjustable discharge resistance.
  24. A filling thread distributor mechanism
       as in one of the Claims 20 to 23, characterized in that the discharge opening (19) from the buffer chamber (18) is closed when the associated transfer channel (14) adopts a certain angle of twist with respect to the feeder nozzle (22).
  25. A filling thread distributor mechanism
       as in one of the Claims 1 to 8, characterized in that the sealing airgap in the separating face (20) between the transfer channel (14) and the associated connecting channel (24) amounts to less than 0.2 mm.
  26. A filling thread distributor mechanism
       as in one of the Claims 1 to 8 and 25, characterized in that in the separating face (20) the areas made as sealing areas touch with an adjustable contact pressure.
  27. A filling thread distributor mechanism
       as in one of the Claims 1 to 8 and 25, 26, characterized in that in the separating face (20) the areas made as sealing areas are made of a pair of wear-resistant materials capable of dry sliding contact.
  28. A filling thread distributor mechanism as in Claim 27,
       characterized in that the sliding ability of the pair of materials is assisted by a lubricant fed to them.
  29. A filling thread distributor mechanism
       as in one of the Claims 1 to 8, characterized in that connecting channels (24) and transfer channels (14) associated with one another in the separating face (20) are enclosed by an air-barrier or venting system (28).
  30. A filling thread distributor mechanism
       as in one of the Claims 1 to 8, characterized in that at the separating and sealing face (20) packing strips surround the transfer and connecting channels (14, 24).
  31. A series-shed loom having a filling thread distributor
       mechanism as in one of the Claims 1 to 30.
  32. A series-shed loom as in Claim 31, characterized in that
       the filling thread distributor mechanisms are built in at both ends of the weaving rotor (4) in such a way that they introduce filling threads into picking channels offset from one another in the same weaving rotor.
EP90810754A 1989-11-16 1990-10-03 Weft distributing device for a multiphase linear shed loom with air picking Expired - Lifetime EP0433216B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH4130/89 1989-11-16
CH413089 1989-11-16

Publications (2)

Publication Number Publication Date
EP0433216A1 EP0433216A1 (en) 1991-06-19
EP0433216B1 true EP0433216B1 (en) 1994-04-27

Family

ID=4270391

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90810754A Expired - Lifetime EP0433216B1 (en) 1989-11-16 1990-10-03 Weft distributing device for a multiphase linear shed loom with air picking

Country Status (5)

Country Link
US (1) US5146955A (en)
EP (1) EP0433216B1 (en)
JP (1) JP2848684B2 (en)
DE (1) DE59005525D1 (en)
RU (1) RU1834930C (en)

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EP0584432B1 (en) * 1992-08-28 1996-04-17 Sulzer RàœTi Ag Weaving rotor for a linear-shed multiphase loom
EP0624672B1 (en) * 1993-05-13 1997-09-24 Sulzer RàœTi Ag Weft distributing device for a multiphase linear shed loom
DE59307393D1 (en) * 1993-05-13 1997-10-23 Rueti Ag Maschf Weft distributing device for a row shed weaving machine and row shed weaving machine with weft dividing device
DE59408476D1 (en) * 1994-05-30 1999-08-12 Rueti Ag Maschf Method and device for inserting weft threads into a row shed weaving machine
DE59603083D1 (en) * 1995-06-02 1999-10-21 Rueti Ag Maschf SPREADING DISTRIBUTION DEVICE OF A ROW WAVING MACHINE
WO1996038609A1 (en) * 1995-06-02 1996-12-05 SULZER RüTI AG Process and device for inserting a weft thread into a shed course loom
WO1996038615A1 (en) * 1995-06-02 1996-12-05 SULZER RüTI AG Air nozzle loom
US5540261A (en) * 1995-10-05 1996-07-30 Mcginley; Thomas F. Warp wave weaving method and apparatus with pneumatic weft insertion
DE59707877D1 (en) * 1997-11-28 2002-09-05 Sulzer Textil Ag Rueti Method and device for inserting a weft thread in a row shed loom
EP0980924A1 (en) 1998-08-19 2000-02-23 Sulzer Textil Ag Device for weft-insertion in linear shed multiphase looms and linear shed multiphase looms with such device
JP2000064154A (en) 1998-08-19 2000-02-29 Sulzer Rueti Ag Weft insertion device for serial shed type weaving machine
EP0980925A1 (en) 1998-08-19 2000-02-23 Sulzer Rüti Ag Device for weft-insertion in linear shed multiphase looms and linear shed multiphase looms with such device
EP0980923A1 (en) * 1998-08-19 2000-02-23 Sulzer Rüti Ag Device for the insertion of weft threads in a multi-phase loom and multi-phase loom with such device
EP1048766A3 (en) * 1999-04-21 2001-06-06 Sulzer Textil Ag Process for inserting weft in a linear shed multiphase loom
EP1048767B1 (en) * 1999-04-21 2006-05-17 Sultex AG Linear shed multiphase loom and process for inserting weft in a linear shed multiphase loom
EP1111108B1 (en) * 1999-12-22 2004-06-23 Sultex AG Stationary thread guiding element
DE50006883D1 (en) 1999-12-22 2004-07-29 Sultex Ag Rueti Stationary thread guide element
DE502007002850D1 (en) * 2006-11-29 2010-04-01 Itema Switzerland Ltd Thread catching device and method for a rapier loom
EP2034061B1 (en) * 2007-09-10 2010-09-01 ITEMA (Switzerland) Ltd. Cutting device for a loom and method for operating the same
WO2012019035A2 (en) 2010-08-05 2012-02-09 Frank Scott Atchley Composite smokeless tobacco products, systems, and methods
RU2580483C2 (en) 2010-08-05 2016-04-10 Олтриа Клайент Сервисиз Инк. Material with tobacco intertangled with structural fibres
WO2014152938A1 (en) 2013-03-14 2014-09-25 Altria Client Services Inc. Product portion enrobing machines and methods
US10028521B2 (en) 2013-03-15 2018-07-24 Altria Client Services Llc Methods and machines for pouching smokeless tobacco and tobacco substitute products
US10239089B2 (en) 2014-03-14 2019-03-26 Altria Client Services Llc Product portion enrobing process and apparatus
EP3957190B1 (en) 2014-03-14 2024-08-21 Altria Client Services LLC Polymer encased smokeless tobacco products

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EP0143860B1 (en) * 1983-12-01 1986-09-03 Maschinenfabrik Sulzer-Rüti Ag Device for preparing the weft in multiple longitudinal traversing shed weaving machines
DE3462804D1 (en) * 1984-01-25 1987-04-30 Rueti Ag Maschf Loom
NL8503439A (en) 1985-12-13 1987-07-01 Picanol Nv APPARATUS FOR SUPPLYING A WAVE THREAD TO A MAIN BLOWER AT WEAVING MACHINES.

Also Published As

Publication number Publication date
DE59005525D1 (en) 1994-06-01
JP2848684B2 (en) 1999-01-20
JPH03161550A (en) 1991-07-11
US5146955A (en) 1992-09-15
RU1834930C (en) 1993-08-15
EP0433216A1 (en) 1991-06-19

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