EP0022226B1 - Jet loom - Google Patents

Jet loom Download PDF

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Publication number
EP0022226B1
EP0022226B1 EP19800103639 EP80103639A EP0022226B1 EP 0022226 B1 EP0022226 B1 EP 0022226B1 EP 19800103639 EP19800103639 EP 19800103639 EP 80103639 A EP80103639 A EP 80103639A EP 0022226 B1 EP0022226 B1 EP 0022226B1
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EP
European Patent Office
Prior art keywords
batten
clamping arm
shuttleless loom
yarn
loom according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP19800103639
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German (de)
French (fr)
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EP0022226A1 (en
Inventor
Hubert Peter Van Mullekom
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Rueti Te Strake BV
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Rueti Te Strake BV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rueti Te Strake BV filed Critical Rueti Te Strake BV
Publication of EP0022226A1 publication Critical patent/EP0022226A1/en
Application granted granted Critical
Publication of EP0022226B1 publication Critical patent/EP0022226B1/en
Expired legal-status Critical Current

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    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/34—Handling the weft between bulk storage and weft-inserting means
    • D03D47/36—Measuring and cutting the weft
    • D03D47/368—Air chamber storage devices
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/28—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein the weft itself is projected into the shed

Definitions

  • the invention relates to a defenseless weaving machine with a drawer, with a nozzle arranged on the drawer for inserting a weft thread drawn from a stationary yarn supply, with a weaving reed carried by the drawer for striking and with a cutting device for cutting off the inserted weft threads and with one between the Nozzle and the reed arranged thread clamp.
  • the invention is intended to eliminate the damage to the weft thread mentioned.
  • the invention is based on the new finding that even when the thread clamp is arranged on the drawer in front of the nozzle, the weft thread is still so tight that it springs back into the nozzle after being cut off and can be damaged in the process, whereby this damage can go so far that knots appear in the weft.
  • the object is achieved according to the invention in that the thread clamp is arranged between the nozzle and the cutting device and is mounted on the drawer.
  • the arrangement of the thread clamp according to the invention prevents the weft thread from jumping back into the nozzle, so that all disturbing factors caused by the springing back are eliminated. This not only leads to greater protection of the weft threads and to an improvement in the fabric quality, but also to an expansion of the field of application of jet weaving machines that was previously not considered possible, since less twisted and smooth yarn can now be used as weft thread.
  • the reference numeral 1 shows part of the drawer which can be moved in the direction of the double arrow A.
  • This drawer carries a bar 1a, on which the leaf teeth forming the reed 2 are mounted, which delimit a conveying tunnel in a known manner, through which the weft thread 4 is inserted into the shed.
  • a nozzle 3 with a mixing tube 3a is also mounted on the bar 1a, which is fed with blown air in the direction of the arrow X and is arranged in alignment with the said conveying tunnel.
  • the weft thread 4 is drawn off from a stationary yarn package 6 in a known manner by continuously rotating rollers 5.
  • the weft thread supplied by the rollers 5 is fed to a blowing nozzle, designated 7, whose outlet end 7a is directed against the opening 8 of a flattened storage device 10 fastened to the weaving machine frame 9.
  • the storage device 10 the end of which (not shown in the drawing) can be connected to a vacuum source, is of a type known per se.
  • the thread forms a loop in the storage device 10 with an entry leg and an exit leg 4a or 4b.
  • the storage device 10 is continuously supplied with weft thread from the blowing nozzle 7 in the direction of the entry leg 4a and intermittently from the nozzle 3 in the direction of the exit leg 4b, namely with each weft insertion, according to the stored thread length, a certain thread length is removed and entered into the shed.
  • the removed shot which is fed to the nozzle 3 via a stationary guide eyelet 11.
  • a schematically illustrated cutting device 12 is provided between the thread outlet end of the mixing tube 3a of the nozzle 3 and the thread inlet end of the conveyor tunnel formed by the blade teeth.
  • a thread clamp 13 also shown schematically, is mounted between the thread outlet end of the mixing tube 3a and the adjacent end of the reed 2.
  • the thread clamp 13 has the function of holding the weft thread 4 after completion of the weft insertion and before cutting off the inserted weft thread and releasing it again at the beginning of the next weft insertion.
  • the arrangement of the thread clamp 13 shown could also be advantageous in a weaving machine in which the nozzle 3 is not mounted on the drawer, but rather is fixedly mounted on the machine frame.
  • a further thread clamp could also be arranged in front of the nozzle 3, either on the drawer 1 as described in GB-A-1 550 547 or on the machine frame.
  • FIG. 2 shows an exemplary embodiment of the thread clamp 13 from FIG. 1.
  • the movable part of the thread clamp 13 consists of a clamping arm 15 formed by a spiral spring, which is fixedly mounted on a pivot shaft 16.
  • the pivot shaft 16 is rotatably mounted on the beam 1 a and is fixedly connected to one end of a first pivot lever 17, the other end of which is pivotally connected to one end of a second pivot lever 18.
  • the other end of the second pivot lever 18 is pivotable about a bearing point which is fixed relative to the machine frame. This bearing point can be formed, for example, by a shaft 19 which is fixedly connected to the machine frame.
  • the thread clamp 13 is designed such that the clamping arm 15 would swing beyond the plate 14 when the sheet stops, the resilient clamping arm 15 deforming accordingly and its contact pressure against the plate 14 and the weft thread 4 increasing steadily.
  • the weft 4 is not clamped abruptly, but softly.
  • the weft is released not suddenly, but gradually. Since the weft thread 4 is held at its tip in front of the thread outlet opening of the mixing tube 3a after cutting, it cannot spring back into it and be damaged or knotted in the process.
  • the thread clamp 13 shown in FIG. 2 is only one of several possible exemplary embodiments.
  • the thread clamp 13 can be designed as an active or a passive element, and in the case of an active element, as in FIG. 2, the clamping arm 15 could also be driven by a curve.
  • a passive element for example, an elastic thread clamp moved with the drawer could be used, such as the clamp described in published NL patent application No. 7 704 471, which would also have to be arranged between nozzle 3 and cutting device 12, but close to the latter .
  • a cutting device 12 mounted on the drawer and moved with it it could be designed as a cutting clamping device which on the one hand cuts the weft thread and on the other hand clamps it behind the cutting point in the entry direction.

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

Description

Die Erfindung betrifft eine schützenlose Webmaschine mit einer Lade, mit einer auf der Lade angeordneten Düse zum Eintragen eines von einem stationären Garnvorrat abgezogenen Schussfadens, mit einem von der Lade getragenen Webblatt zum Anschlagen und mit einer Schneidvorrichtung zum Abschneiden der eingetragenen Schussfäden und mit einer zwischen der Düse und dem Webblatt angeordneten Fadenklemme.The invention relates to a defenseless weaving machine with a drawer, with a nozzle arranged on the drawer for inserting a weft thread drawn from a stationary yarn supply, with a weaving reed carried by the drawer for striking and with a cutting device for cutting off the inserted weft threads and with one between the Nozzle and the reed arranged thread clamp.

Es war bei Düsenwebmaschinen dieser Art lange Zeit üblich, die Fadenklemme auf dem Maschinenrahmen zu montieren. Da sich jedoch nach Beendigung des Schusseintrags und dem Schliessen der Fadenklemme das Webblatt mit dem eingetragenen Schussfaden zur Gewebeanschlagkante bewegt und dadurch der Abstand zwischen der stationären Fadenklemme und der Kreuzungsstelle zwischen dem Schussfaden und dem der Fadenklemme benachbarten Rand der Kettfadenschar zunimmt, wurde bei dieser Anordnung der Fadenklemme der Schussfaden über eine gewisse Länge aus dem Webfach heraus zurückgezogen und einer erhöhten Spannung ausgezetzt. Diese Spannung hat insbesondere in dem Bereich zwischen der Fadenklemme und dem benachbarten Fachende zu einer übermässigen Streckung des Schussfadens geführt und der auf diese Weise überstreckte Schussfaden neigte beim Durchschneiden zum Zurückspringen, was oftmals zu Webfehlern führte.For a long time it was common for jet weaving machines of this type to mount the thread clamp on the machine frame. However, since after the weft insertion has ended and the thread clamp has closed, the reed with the inserted weft thread moves to the fabric stop edge and the distance between the stationary thread clamp and the point of intersection between the weft thread and the edge of the warp thread cluster adjacent to the thread clamp increases, with this arrangement the Thread clamp of the weft thread is pulled out of the shed over a certain length and subjected to increased tension. This tension has led to an excessive stretching of the weft thread, particularly in the area between the thread clamp and the adjacent shed end, and the weft thread stretched in this way has a tendency to spring back when cut, which often leads to weaving errors.

Man hat versucht, das Überstrecken und Zurückspringen des Schussfadens dadurch zu verhindern, dass man die Fadenklemme auf der Lade vor der Fadeneintrittsöffnung angeordnet hat. Obwohl man mit dieser Anordnung der Düse sehr gute Ergebnisse erzielt hat, ist es dennoch bei bestimmten Garnen, insbesondere bei solchen mit wenig Drehung und glatter Oberfläche, im Bereich des vorderen Schussfadenendes noch zu Beschädigungen und somit zu Webfehlern gekommen. Man hat angenommen, dass diese Webfehler ihre Ursache in der Wirkung zwischen dem von der Düse ausgestossenen Fluidum und dem Schussfaden in der Beschleunigungsphase zu Beginn des Schusseintrags haben und hat versucht, durch Modifikationen der Düse eine Verbesserung zu erreichen, ohne aber den gewünschten Erfolg ganz zu erzielen.Attempts have been made to prevent the weft thread from stretching and springing back by placing the thread clamp on the drawer in front of the thread inlet opening. Although very good results have been achieved with this arrangement of the nozzle, certain yarns, in particular those with little twist and a smooth surface, are still damaged in the region of the front weft end and thus weaving errors. It has been assumed that these weaving errors are caused by the effect between the fluid ejected by the nozzle and the weft thread in the acceleration phase at the beginning of the weft insertion, and attempts have been made to improve it by modifying the nozzle, but without achieving the desired success entirely achieve.

Es ist auch bekannt, beispielsweise aus NL-A-7 704 471, auf dem Rahmen der Webmaschine eine Klemmvorrichtung anzuordnen, welche gegen den Zwischenraum zwischen der Schneidvorrichtung und dem Webblatt ragt und in welche der Schussfaden nach seinem Eintrag durch die Anschlagbewegung des Webblatts eingeschoben wird. Diese Klemmvorrichtung dient aber ausschliesslich zum Festhalten der sogenannten Hilfsleiste an der jeweiligen Gewebeseitenkante und damit zur Stabilisierung der Gewebeleiste und kann somit das Überstrecken und Zurückspringen des Schussfadens nicht verhindern.It is also known, for example from NL-A-7 704 471, to arrange on the frame of the weaving machine a clamping device which projects against the space between the cutting device and the reed and into which the weft thread is inserted after the entry by the stop movement of the reed . However, this clamping device is used exclusively to hold the so-called auxiliary bar on the respective fabric side edge and thus to stabilize the fabric bar and thus cannot prevent the weft thread from being stretched and jumping back.

Durch die Erfindung sollen die genannten Beschädigungen des Schussfadens ausgeschaltet werden. Dabei geht die Erfindung von der neuen Erkenntnis aus, dass auch bei Anordnung der Fadenklemme auf der Lade vor der Düse der Schussfaden noch immer so stark gespannt wird, dass er nach seinem Abschneiden in die Düse zurückspringt und dabei be-' schädigt werden kann, wobei diese Beschädigungen so weit gehen können, dass Knoten im Schussfaden entstehen.The invention is intended to eliminate the damage to the weft thread mentioned. The invention is based on the new finding that even when the thread clamp is arranged on the drawer in front of the nozzle, the weft thread is still so tight that it springs back into the nozzle after being cut off and can be damaged in the process, whereby this damage can go so far that knots appear in the weft.

Die gestellte Aufgabe wird erfindungsgemäss dadurch gelöst, dass die Fadenklemme zwischen der Düse und der Schneidvorrichtung angeordnet und auf der Lade montiert ist.The object is achieved according to the invention in that the thread clamp is arranged between the nozzle and the cutting device and is mounted on the drawer.

Durch die erfindungsgemässe Anordnung der Fadenklemme wird der Schussfaden daran gehindert in die Düse zurückzuspringen, so dass alle durch das Zurückspringen verursachten Störfaktoren ausgeschaltet sind. Dies führt nicht nur zu einer stärkeren Schonung der Schussfäden und zu einer Verbesserung der Gewebequalität, sondern auch zu einer bisher nicht für möglich gehaltenen Erweiterung des Anwendungsgebiets von Düsenwebmaschinen, indem nun auch wenig gedrehtes und glattes Garn als Schussfaden verwendet werden kann.The arrangement of the thread clamp according to the invention prevents the weft thread from jumping back into the nozzle, so that all disturbing factors caused by the springing back are eliminated. This not only leads to greater protection of the weft threads and to an improvement in the fabric quality, but also to an expansion of the field of application of jet weaving machines that was previously not considered possible, since less twisted and smooth yarn can now be used as weft thread.

Nachstehend wird die Erfindung anhand eines Ausführungsbeispiels und der Figuren der Zeichnung näher erläutert; in der letzteren zeigen:

  • Fig. 1 eine schematische Ansicht der für das Verständnis der Erfindung notwendigen Teile einer Luftdüsenwebmaschine in perspektivischer Darstellung, und
  • Fig. 2 ein Detail von Fig. 1.
The invention is explained in more detail below using an exemplary embodiment and the figures of the drawing; in the latter show:
  • 1 is a schematic view of the parts of an air jet loom necessary for understanding the invention in perspective, and
  • FIG. 2 shows a detail from FIG. 1.

In Fig. 1 ist mit dem Bezugszeichen 1 ein Teil der in Richtung des Doppelpfeils A bewegbaren Lade dargestellt. Diese Lade trägt einen Balken 1a, auf welchem die das Webblatt 2 bildenden Blattzähne montiert sind, welche in bekannter Weise einen Fördertunnel begrenzen, durch welchen der Schussfaden 4 in das Webfach eingetragen wird. Auf dem Balken 1 a ist ausserdem eine Düse 3 mit einem Mischrohr 3a montiert, welche in Richtung des Pfeiles X mit Blasluft gespeist wird und fluchtend mit dem genannten Fördertunnel angeordnet ist.In Fig. 1, the reference numeral 1 shows part of the drawer which can be moved in the direction of the double arrow A. This drawer carries a bar 1a, on which the leaf teeth forming the reed 2 are mounted, which delimit a conveying tunnel in a known manner, through which the weft thread 4 is inserted into the shed. A nozzle 3 with a mixing tube 3a is also mounted on the bar 1a, which is fed with blown air in the direction of the arrow X and is arranged in alignment with the said conveying tunnel.

Der Schussfaden 4 wird in bekannter Weise von ständig drehenden Walzen 5 von einem stationären Garnpaket 6 abgezogen.The weft thread 4 is drawn off from a stationary yarn package 6 in a known manner by continuously rotating rollers 5.

Der von den Walzen 5 gelieferte Schussfaden wird einer mit 7 bezeichneten Blasdüse zugeführt, welche mit ihrem Austrittsende 7a gegen die Öffnung 8 einer am Webmaschinenrahmen 9 befestigten abgeflachten Speichervorrichtung 10 gerichtet ist. Die Speichervorrichtung 10, deren in der Zeichnung nicht dargestelltes Ende an eine Vakumquelle angeschlossen sein kann, ist von an sich bekannter Art. Der Faden bildet in der Speichervorrichtung 10 eine Schlaufe mit einem Eintritts- und einem Austrittsschenkel 4a bzw. 4b. Der Speichervorrichtung 10 wird von der Blasdüse 7 in Richtung des Eintrittsschenkels 4a ständig Schussfaden zugeführt und von der Düse 3 in Richtung des Austrittsschenkels 4b intermittierend, und zwar bei jedem Schusseintrag, nach Massgabe der gespeicherten Fadenlänge eine bestimmte Fadenlänge entnommen und in das Webfach eingetragen. Der entnommene Schussfaden wird über eine stationäre Führungsöse 11 der Düse 3 zugeführt.The weft thread supplied by the rollers 5 is fed to a blowing nozzle, designated 7, whose outlet end 7a is directed against the opening 8 of a flattened storage device 10 fastened to the weaving machine frame 9. The storage device 10, the end of which (not shown in the drawing) can be connected to a vacuum source, is of a type known per se. The thread forms a loop in the storage device 10 with an entry leg and an exit leg 4a or 4b. The storage device 10 is continuously supplied with weft thread from the blowing nozzle 7 in the direction of the entry leg 4a and intermittently from the nozzle 3 in the direction of the exit leg 4b, namely with each weft insertion, according to the stored thread length, a certain thread length is removed and entered into the shed. The removed shot which is fed to the nozzle 3 via a stationary guide eyelet 11.

Zwischen dem Fadenaustrittsende des Mischrohres 3a der Düse 3 und dem Fadeneintrittsende des von den Blattzähnen gebildeten Fördertunnels ist eine schematisch dargestellte Schneidvorrichtung 12 vorgesehen. Ausserdem ist zwischen dem Fadenaustrittsende des Mischrohres 3a und dem benachbarten Ende des Webblatts 2 eine ebenfalls schematisch dargestellte Fadenklemme 13 montiert. Die Fadenklemme 13 hat die Funktion, den Schussfaden 4 nach Beendigung des Schusseintrags und vor dem Abschneiden des eingetragenen Schussfadens festzuhalten und ihn zu Beginn des nächsten Schusseintrags wieder freizugeben.A schematically illustrated cutting device 12 is provided between the thread outlet end of the mixing tube 3a of the nozzle 3 and the thread inlet end of the conveyor tunnel formed by the blade teeth. In addition, a thread clamp 13, also shown schematically, is mounted between the thread outlet end of the mixing tube 3a and the adjacent end of the reed 2. The thread clamp 13 has the function of holding the weft thread 4 after completion of the weft insertion and before cutting off the inserted weft thread and releasing it again at the beginning of the next weft insertion.

Die Erfindung ist nicht auf die bechriebene Ausführungsform beschränkt. So könnte zum Beispiel die dargestellte Anordnung der Fadenklemme 13 auch bei einer Webmaschine von Vorteil sein, bei welcher die Düse 3 nicht auf der Lade, sondern fest auf dem Maschinenrahmen montiert ist. Ausserdem könnte auch zusätzlich zur Fadenklemme 13 nach der Düse 3 eine weitere Fadenklemme vor der Düse 3, und zwar entweder auf der Lade 1, wie in GB-A-1 550 547 beschrieben, oder auf dem Maschinenrahmen, angeordnet sein.The invention is not restricted to the embodiment described. For example, the arrangement of the thread clamp 13 shown could also be advantageous in a weaving machine in which the nozzle 3 is not mounted on the drawer, but rather is fixedly mounted on the machine frame. In addition to the thread clamp 13 after the nozzle 3, a further thread clamp could also be arranged in front of the nozzle 3, either on the drawer 1 as described in GB-A-1 550 547 or on the machine frame.

In Fig. 2 ist ein Ausführungsbeispiel der Fadenklemme 13 von Fig. 1 dargestellt. Darstellungsgemäss ist in Eintragsrichtung nach dem Fadenaustrittsende des Mischrohres 3a auf dem Balken 1 a der Lade 1 (Fig. 1) ein schräg nach oben und nach hinten gerichtetes Plättchen 14 montiert, welches den festen Teil der Fadenklemme 13 bildet und als Anschlag für deren beweglichen Teil wirkt. Der bewegliche Teil der Fadenklemme 13 besteht aus einem durch eine Spiralfeder gebildeten Klemmarm 15, welcher an einer Schwenkwelle 16 fest montier ist. Die Schwenkwelle 16 ist am Balken 1 a drehbar gelagert und ist fest mit dem einen Ende eines ersten Schwenkhebels 17 verbunden, dessen anderes Ende gelenkig mit dem einen Ende eines zweiten Schwenkhebels 18 verbunden ist. Das andere Ende des zweiten Schwenkhebels 18 ist um eine relativ zum Maschinenrahmen feste Lagerstelle schwenkbar. Diese Lagerstelle kann beispielsweise durch eine fest mit dem Maschinenrahmen verbundene Welle 19 gebildet sein.FIG. 2 shows an exemplary embodiment of the thread clamp 13 from FIG. 1. As shown in the entry direction after the thread exit end of the mixing tube 3a on the bar 1 a of the drawer 1 (Fig. 1) an obliquely upward and rearward directed plate 14 is mounted, which forms the fixed part of the thread clamp 13 and as a stop for the movable part works. The movable part of the thread clamp 13 consists of a clamping arm 15 formed by a spiral spring, which is fixedly mounted on a pivot shaft 16. The pivot shaft 16 is rotatably mounted on the beam 1 a and is fixedly connected to one end of a first pivot lever 17, the other end of which is pivotally connected to one end of a second pivot lever 18. The other end of the second pivot lever 18 is pivotable about a bearing point which is fixed relative to the machine frame. This bearing point can be formed, for example, by a shaft 19 which is fixedly connected to the machine frame.

Wenn die Lade 1 (Fig. 1) in Richtung des Pfeiles A hin- und herschwingt, dann schwingt der erste Schwenkhebel 17 in Richtung des Pfeiles B und der Klemmarm 15 dementsprechend in Richtung des Pfeiles C und zwar bei Bewegung der Lade 1 nach vorne gegen das Plättchen 14 und bei Bewegung der Lade nach hinten von diesem weg.If the drawer 1 (FIG. 1) swings back and forth in the direction of arrow A, then the first pivot lever 17 swings in the direction of arrow B and the clamping arm 15 accordingly in the direction of arrow C, specifically when the drawer 1 moves forward the plate 14 and when the drawer moves backwards away from it.

Die Fadenklemme 13 ist so ausgelegt, dass der Klemmarm 15 beim Blattanschlag über das Plättchen 14 hinausschwingen würde, wobei sich der federnde Klemmarm 15 entsprechend verformt und sein Anpressdruck gegen das Plättchen 14 und den Schussfaden 4 stetig zunimmt. Der Schussfaden 4 wird dadurch nicht abrupt, sondern weich festgeklemmt. Ebenso erfolgt auch die Schussfadenfreigabe beim Zurückschwenken der Lade nach dem Anschlag nicht sprunghaft, sondern allmählich. Da der Schussfaden 4 nach dem Abschneiden an seiner Spitze vor der Fadenaustrittsöffnung des Mischrohres 3a gehalten wird, kann er nicht in dieses zurückspringen und dabei beschädigt werden oder sich verknoten.The thread clamp 13 is designed such that the clamping arm 15 would swing beyond the plate 14 when the sheet stops, the resilient clamping arm 15 deforming accordingly and its contact pressure against the plate 14 and the weft thread 4 increasing steadily. The weft 4 is not clamped abruptly, but softly. Likewise, when the drawer swings back after the stop, the weft is released not suddenly, but gradually. Since the weft thread 4 is held at its tip in front of the thread outlet opening of the mixing tube 3a after cutting, it cannot spring back into it and be damaged or knotted in the process.

Die in Fig. 2 dargestellte Fadenklemme 13 ist nur eines von mehreren möglichen Ausführungsbeispielen. Ganz allgemein kann die Fadenklemme 13 als aktives oder als passives Element ausgebildet sein, wobei im Fall eines aktiven Elements wie in Fig. 2 der Antrieb des Klemmarms 15 auch durch eine Kurve erfolgen könnte. Als passives Element könnte beispielsweise eine mit der Lade bewegte elastische Fadenklemme in der Art der in der publizierten NL-Patentanmeldung Nr. 7 704 471 beschriebenen Klemme verwendet werden, wobei diese ebenfalls zwischen Düse 3 und Schneidvorrichtung 12, aber nahe an der letzteren angeordnet sein müsste. Als weitere Variante könnte bei Verwendung einer auf der Lade montierten und mit dieser bewegten Schneidvorrichtung 12 diese als Schneid-Klemmvorrichtung ausgebildet sein, welche einerseits den Schussfaden schneidet und ihn anderseits in Eintragsrichtung hinter der Schneidstelle festklemmt.The thread clamp 13 shown in FIG. 2 is only one of several possible exemplary embodiments. In general, the thread clamp 13 can be designed as an active or a passive element, and in the case of an active element, as in FIG. 2, the clamping arm 15 could also be driven by a curve. As a passive element, for example, an elastic thread clamp moved with the drawer could be used, such as the clamp described in published NL patent application No. 7 704 471, which would also have to be arranged between nozzle 3 and cutting device 12, but close to the latter . As a further variant, when using a cutting device 12 mounted on the drawer and moved with it, it could be designed as a cutting clamping device which on the one hand cuts the weft thread and on the other hand clamps it behind the cutting point in the entry direction.

Claims (10)

1. A shuttleless loom having a batten (1) and a nozzle (3) mounted on the batten for the insertion of a filing yarn (4) withdrawn from a stationary yarn supply (6), having a reed (2) borne by the batten for the beating-up and having a yarn gripper device for cutting the inserted filling yarns and having a yarn gripper device (13) arranged between the nozzle (3) and the reed, characterized in that the yarn gripper device (13) is arranged between the nozzle (3) and the cutting device (12) and is mounted on the batten (1).
2. A shuttleless loom according to claim 1, characterized in that the nozzle (3) is provided on the exit side of the filling yarn (4) with a mixing tube (3a) and that the yarn gripper device (13) is arranged directly behind the end of the mixing tube.
3. A shuttleless loom according to claim 1 or 2, characterized in that the yarn gripper device (13) has a fixed part (14) and a movable part (15), the latter being formed by a swingable clamping arm.
4. A shuttleless loom according to claim 3, characterized in that the clamping arm (15) is provided with spring action at least in the part thereof which clamps the filling yarn (4).
5. A shuttleless loom according to claim 4, characterized in that the clamping arm (15) is formed by a spiral spring.
6. A shuttleless loom according to claim 5, characterized in that the clamping arm (15) is swingably supported to the batten (1) and the drive for the swinging of the clamping arm is effected by the movement of the batten.
7. A shuttleless loom according to claim 6, characterized in that the clamping arm (15) is driven by a lever-and-articulation system (16, 17, 18), one end of which is connected with the clamping arm and its other end is connected with a fixed point (19) on the frame of the loom.
8. A shuttleless loom according to claim 6, characterized in that the clamping arm (15) is actuated by a cam means.
9. A shuttleless loom according to claim 1, characterized in that the cutting device (12) is arranged on the batten (1) and that the gripper device (13) forms part of the cutting device.
10. A shuttleless loom according to claim 1, characterized in that the yarn gripper device (13) is a passive element which is arranged close to the edge of the fabric being woven and is moved by the batten (1).
EP19800103639 1979-07-10 1980-06-27 Jet loom Expired EP0022226B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH6422/79 1979-07-10
CH642279A CH638250A5 (en) 1979-07-10 1979-07-10 Jet weaving machine.

Publications (2)

Publication Number Publication Date
EP0022226A1 EP0022226A1 (en) 1981-01-14
EP0022226B1 true EP0022226B1 (en) 1983-10-12

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EP (1) EP0022226B1 (en)
JP (1) JPS5615443A (en)
CH (1) CH638250A5 (en)
DE (1) DE3065275D1 (en)

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JP6301023B2 (en) 2015-10-01 2018-03-28 三菱電機株式会社 Three-phase induction motor
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GB1344833A (en) * 1970-05-26 1974-01-23 Fothergill Harvey Ld Method for severing of weft yarn druing weaving
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NL7704471A (en) * 1977-04-22 1978-10-24 Rueti Te Strake Bv Weft thread clamp for selvedge in shuttleless loom - prevents loosening of threads and assists temples to maintain width

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EP0022226A1 (en) 1981-01-14
DE3065275D1 (en) 1983-11-17
JPS5615443A (en) 1981-02-14
CH638250A5 (en) 1983-09-15

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