EP0310767B1 - Gripper needle loom - Google Patents

Gripper needle loom Download PDF

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Publication number
EP0310767B1
EP0310767B1 EP88111926A EP88111926A EP0310767B1 EP 0310767 B1 EP0310767 B1 EP 0310767B1 EP 88111926 A EP88111926 A EP 88111926A EP 88111926 A EP88111926 A EP 88111926A EP 0310767 B1 EP0310767 B1 EP 0310767B1
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EP
European Patent Office
Prior art keywords
pick
loom according
gripper loom
gripper
weft
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
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EP88111926A
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German (de)
French (fr)
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EP0310767A1 (en
Inventor
Francisco Speich
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Textilma AG
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Textilma AG
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Publication date
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Publication of EP0310767A1 publication Critical patent/EP0310767A1/en
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    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D49/00—Details or constructional features not specially adapted for looms of a particular type
    • D03D49/70—Devices for cutting weft threads
    • 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
    • D03D47/38—Weft pattern mechanisms

Definitions

  • the invention relates to a rapier weaving machine according to the preamble of claim 1.
  • Rapier weaving machines of the type mentioned at the outset are known, for example, from DE-OS 2534494.
  • the upper scissor blade is designed as a bracket that spans the lower scissor blade at a distance, the weft threads remaining at the edge of the fabric being passed through the opening between the cutting elements.
  • the weft thread that is to be newly inserted into the shed is presented to the gripper by the weft thread feed device.
  • the gripper pulls the weft thread still attached to the fabric edge over the lower scissor blade into a clamping member assigned to the scissor blade, whereupon the scissors are actuated and the weft thread is cut so that the new weft thread can be drawn into the shed.
  • the object of the invention is to further improve a rapier weaving machine of the type mentioned at the outset.
  • this object is achieved by the characterizing features of claim 1. Because the scissors are closed during the reed movement of the reed, the inserted weft thread certainly cannot penetrate between the scissor blades and is securely inserted into a catch hook at the front via the upper scissor blade. On the one hand, this results in a simplification of the device and, on the other hand, an increase in operational safety, since an undesired insertion of the weft thread between the scissor blades when the weft thread is struck is avoided with certainty.
  • the scissors are only required for cutting and no consideration needs to be given to the passage of a weft thread, the scissors can be designed in such a way that they enable optimal operation.
  • an embodiment according to claim 7 is particularly advantageous, since the retaining lug prevents the weft thread from slipping out of the scissors during cutting. It is further expedient according to claims 8, 9 and 10 if the upper and / or the lower scissor blade are / are driven.
  • the rapier weaving machine is also particularly suitable for weft feeders with weft changers.
  • a particularly simple device for deflecting the cut ends of the thread and thus for preventing tangling with weft threads still remaining on the edge of the fabric results from an embodiment according to claim 12.
  • the suction nozzle also has the advantage that it removes dust and fluff and thus a particularly clean one Working method allowed.
  • the suction nozzle is advantageously arranged according to claim 13.
  • FIGS. 1 to 4 show the parts of a rapier weaving machine that are essential for the present invention.
  • the other parts are known several times, so that their explanation can be omitted here.
  • the figures show the entry side of a rapier weaving machine with a weft thread feed device, which in the present case is designed as a weft thread changer, ie different thread guides 4 for alternately placing different weft threads S1, S2, S3, S3 via a stabilizing element 5 in the driving area of a gripper 6, which has is located in a gripper guide 7 and is inserted into the shed 8 from an entry belt (not shown) and pulled out again.
  • the gripper 8 pulls the weft thread S 1 through a shed 8, which is formed from the top warp threads 10 and the bottom warp threads 12.
  • a reed 14 serves to strike the inserted weft thread against a stop edge 16 of a fabric web 18.
  • the scissors On the entry side, outside the fabric edge 20, in the area of the stop edge 16 there is a pair of scissors 22 open against the reed 14.
  • the scissors contain a lower machine-fixed scissor blade 26 and an upper scissor blade 24, not shown in detail, for example by means of known eccentric or cam mechanisms, which is pivotally mounted on an axis 28.
  • the upper scissor blade 24 is further equipped at the free end with a against the other scissor blade 26 retaining nose 30 for an inserted weft thread S1 or S2, S3, S4.
  • the upper scissor blade 24 On the side lying in the running direction of the fabric web 18, the upper scissor blade 24 contains a catch hook 32 which aligns and guides at least the weft thread S 1 or S 2 of a last weft 34 with respect to the weft feed device 2.
  • the fabric edge 20 is further assigned a machine-fixed guide element 36, which contains an open fork 38 directed against the reed 14 and is used for aligning the farther lying, still connected to the fabric web 18 weft threads S3, S4.
  • a suction nozzle 40 is arranged in the area of the scissors 22, the fork 38 of the guide element 36 and the catch hook 32, in order to remove the cut weft pieces 42 protruding from the fabric web 28 from the area of the weft threads still connected to the weft feed device Deflect S1, S2, S3, S4 to avoid complications.
  • the reed 14 is equipped with a guide member 44 with hook to guide the registered weft thread S1 during the beating process over the upper scissor blade 24.
  • FIG. 2 shows the rapier weaving machine in the working phase in which the weft feeder 2 has guided the weft S 1 into the driving area of the rapier 6 by means of the thread guide 4 and the latter has already gripped the weft S 1 and is on its way into the shed 8.
  • the weft thread S 1 is connected to the fabric web 18 on its side facing away from the weft feed device 2 and is guided around the catch hook 32 into the area of the open scissors 22.
  • the weft thread S 1 is severed, the retaining lug 30 preventing the weft thread from sliding out of the scissors 22. As shown in FIG. 3, the weft thread is now drawn completely into the shed.
  • the weaving blade 14 begins with the striking of the inserted weft S 1.
  • the scissors 22 are closed at this stage and the reed 14 carries the registered weft S 1 by means of the thread guide member 44 and the hook 46 over the upper scissor blade 24 behind the catch hook 32.
  • the catch hook 32 aligns the weft S 1 with respect to the weft feed device, so that it is by means of the thread guide 4 can again be brought into the driving area of the gripper 6 in a precisely defined manner. If the weft thread S 1 is not used over several shots, it migrates with the fabric web 18 and is released from the catch hook 32 to the fork 38 of the guide element 36, as is shown for the weft threads S 3 and S4.

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

Description

Die Erfindung betrifft eine Greiferwebmaschine gemäss Oberbegriff des Anspruches 1.The invention relates to a rapier weaving machine according to the preamble of claim 1.

Greiferwebmaschinen der eingangs genannten Art sind beispielsweise aus der DE-OS 2534494 bekannt. Bei dieser Greiferwebmaschine ist es nachteilig, dass die obere Scherenklinge als ein die untere Scherenklinge mit Abstand übergreifender Bügel ausgebildet ist, wobei die am Rand des Gewebes festbleibenden Schussfäden durch die Öffnung zwischen den Schneidelementen hindurch geführt werden. Derjenige Schussfaden, der neu in das Webfach eingeführt werden soll, wird von der Schussfadenzuführvorrichtung dem Greifer vorgelegt. Dabei zieht der Greifer den noch am Geweberand befestigten Schussfaden über die untere Scherenklinge in ein der Scherenklinge zugeordnetes Klemmglied ein, worauf die Schere betätigt und der Schussfaden durchtrennt wird, sodass der neue Schussfaden in das Webfach eingezogen werden kann. Der restliche Schussfaden bleibt im Klemmglied eingeklemmt, um ein Verwirren mit den anderen, noch am Geweberand verbleibenden Schussfäden zu verhindern. Abgesehen davon, dass die so ausgebildete Schere relativ kompliziert ist, muss der in das Webfach eingeführte Schussfaden beim Anschlagen mittels des Webeblattes zwischen die beiden Scherenklingen hindurchgeführt werden, wobei die Gefahr besteht, dass ein solcher Schussfaden in dem Klemmglied eingeklemmt wird. Auch das Einklemmen des neu einzutragenden Schussfadens in das Klemmglied bereitet Schwierigkeiten, da hierfür relativ viel Kraft erforderlich ist, welche den Schusseintrag beeinträchtigt derart, dass der Schussfaden eine zu hohe Spannung erhält.Rapier weaving machines of the type mentioned at the outset are known, for example, from DE-OS 2534494. In this rapier weaving machine, it is disadvantageous that the upper scissor blade is designed as a bracket that spans the lower scissor blade at a distance, the weft threads remaining at the edge of the fabric being passed through the opening between the cutting elements. The weft thread that is to be newly inserted into the shed is presented to the gripper by the weft thread feed device. The gripper pulls the weft thread still attached to the fabric edge over the lower scissor blade into a clamping member assigned to the scissor blade, whereupon the scissors are actuated and the weft thread is cut so that the new weft thread can be drawn into the shed. The rest of the weft remains clamped in the clamping member in order to prevent confusion with the other weft threads still remaining on the fabric edge. Apart from the fact that the scissors thus formed are relatively complicated, the weft thread inserted into the shed must be passed between the two scissor blades when struck by means of the reed, with the risk that such a weft thread will be pinched in the clamping member. Clamping the new weft thread to be inserted into the clamping member also presents difficulties, since a relatively large amount of force is required for this, which impairs the weft insertion in such a way that the weft thread receives too high a tension.

Aufgabe der Erfindung ist es, eine Greiferwebmaschine der eingangs genannten Art weiter zu verbessern.The object of the invention is to further improve a rapier weaving machine of the type mentioned at the outset.

Diese Aufgabe wird erfindungsgemäss durch die kennzeichnenden Merkmale des Anspruches 1 gelöst. Dadurch, dass die Schere während der Anschlagbewegung des Webeblattes geschlossen ist, kann der eingetragene Schussfaden mit Sicherheit nicht zwischen die Scherenklingen eindringen und wird sicher über die obere Scherenklinge in einen vorne liegenden Fanghaken eingebracht. Dadurch ergibt sich einerseits eine Vereinfachung der Vorrichtung und andererseits ein Gewinn an Betriebssicherheit, da ein ungewolltes Einbringen des Schussfadens zwischen die Scherenklingen beim Anschlagen des Schussfadens mit Sicherheit vermieden wird.According to the invention, this object is achieved by the characterizing features of claim 1. Because the scissors are closed during the reed movement of the reed, the inserted weft thread certainly cannot penetrate between the scissor blades and is securely inserted into a catch hook at the front via the upper scissor blade. On the one hand, this results in a simplification of the device and, on the other hand, an increase in operational safety, since an undesired insertion of the weft thread between the scissor blades when the weft thread is struck is avoided with certainty.

Vorteilhafte Ausgestaltungen der Greiferwebmaschine sind in den Ansprüchen 2 bis 13 beschrieben.Advantageous embodiments of the rapier weaving machine are described in claims 2 to 13.

Insbesondere dann, wenn die Schussfadenzuführvorrichtung mit einem Schussfadenwechsler gemäss Anspruch 11 ausgestaltet ist, empfiehlt sich eine Weiterbildung nach Anspruch 2, um die noch am Rand des Gewebes verbleibenden Schussfäden sicher bezüglich der Schussfadenzuführvorrichtung auszurichten, sodass ein ebenso sicheres Vorlegen eines Schussfadens in den Mitnahmebereich des Greifers gewährleistet ist. Insbesondere bei der gabelförmigen Ausführung ist eine besonders gute Lagefixierung gegeben. Vorteilhaft ist auch eine Ausgestaltung nach Anspruch 3, insbesondere dann, wenn nur eine Art von Schussfäden in das Gewebe eingebracht werden soll.In particular, if the weft feed device is designed with a weft changer according to claim 11, a further development according to claim 2 is recommended in order to reliably align the weft threads still remaining on the edge of the fabric with respect to the weft thread feed device, so that a weft thread can be placed in the entraining area of the gripper just as reliably is guaranteed. Particularly in the case of the fork-shaped design, there is particularly good positional fixation. An embodiment according to claim 3 is also advantageous, in particular when only one type of weft thread is to be introduced into the fabric.

Eine besonders einfache Anordnung und Ausbildung des Fanghakens beschreibt Anspruch 4 und 5. Das Überführen des Schussfadens über die Schere kann durch eine Ausgestaltung nach Anspruch 6 verbessert werden.A particularly simple arrangement and design of the catch hook describes claims 4 and 5. The transfer of the weft thread over the scissors can be improved by an embodiment according to claim 6.

Da die Schere nur noch zum Schneiden erforderlich ist und auf ein Durchführen eines Schussfadens keine Rücksicht genommen werden muss, kann die Schere so ausgestaltet sein, dass sie eine optimale Betriebsweise ermöglicht. Hierzu ist insbesondere eine Ausgestaltung nach Anspruch 7 von Vorteil, da die Rückhaltenase verhindert, dass der Schussfaden beim Schneiden aus der Schere herausrutscht. Zweckmässig ist es gemäss den Ansprüchen 8, 9 und 10 weiter, wenn die obere und/oder die untere Scherenklinge angetrieben sind/ist.Since the scissors are only required for cutting and no consideration needs to be given to the passage of a weft thread, the scissors can be designed in such a way that they enable optimal operation. For this purpose, an embodiment according to claim 7 is particularly advantageous, since the retaining lug prevents the weft thread from slipping out of the scissors during cutting. It is further expedient according to claims 8, 9 and 10 if the upper and / or the lower scissor blade are / are driven.

Die Greiferwebmaschine ist insbesondere auch gemäss Anspruch 11 für Schussfadenzuführvorrichtungen mit Schussfadenwechsler geeignet. Eine besonders einfache Vorrichtung zum Ablenken der abgeschnittenen Fadenenden und damit zur Verhinderung eines Verwirrens mit noch am Rand des Gewebes verbleibenden Schussfäden ergibt sich durch eine Ausgestaltung nach Anspruch 12. Die Saugdüse hat überdies den Vorteil, dass sie Staub und Flusen entfernt und somit eine besonders saubere Arbeitsweise gestattet. Vorteilhafterweise ist die Saugdüse gemäss Anspruch 13 angeordnet.The rapier weaving machine is also particularly suitable for weft feeders with weft changers. A particularly simple device for deflecting the cut ends of the thread and thus for preventing tangling with weft threads still remaining on the edge of the fabric results from an embodiment according to claim 12. The suction nozzle also has the advantage that it removes dust and fluff and thus a particularly clean one Working method allowed. The suction nozzle is advantageously arranged according to claim 13.

Ausführungsbeispiele der erfindungsgemässen Greiferwebmaschine werden nachfolgend anhand schematischer Zeichnungen näher beschrieben, dabei zeigen:

Figur 1
eine Greiferwebmaschine in Ansicht auf die Schussfadeneintragseite im Ausschnitt und in Draufsicht;
Figur 2
die Greiferwebmaschine gemäss Figur 1 in schaubildlicher Darstellung;
Figur 3
die Greiferwebmaschine der Figur 2 bei vollständig eingezogenem Schussfaden; und
Figur 4
die Greiferwebmaschine der Figur 2 in der Anschlagbewegung des eingetragenen Schussfadens.

Exemplary embodiments of the rapier weaving machine according to the invention are described in more detail below with the aid of schematic drawings, in which:
Figure 1
a rapier weaving machine in a view of the weft insertion side in the cutout and in plan view;
Figure 2
the rapier weaving machine according to Figure 1 in a graphical representation;
Figure 3
the rapier weaving machine of FIG. 2 with the weft thread fully drawn in; and
Figure 4
the rapier weaving machine of Figure 2 in the stop movement of the inserted weft.

Die Figuren 1 bis 4 zeigen die für die vorliegende Erfindung wesentlichen Teile einer Greiferwebmaschine. Die übrigen Teile sind mehrfach bekannt, sodass auf deren Erläuterung hier verzichtet werden kann.FIGS. 1 to 4 show the parts of a rapier weaving machine that are essential for the present invention. The other parts are known several times, so that their explanation can be omitted here.

Die Figuren zeigen die Eintragseite einer Greiferwebmaschine mit einer Schussfadenzuführvorrichtung, welche im vorliegenden Fall als Schussfadenwechsler ausgebildet ist, d.h. verschiedene Fadenführer 4 zum wechselweisen Vorlegen unterschiedlicher Schussfäden S₁, S₂, S₃, S₄ über ein Stabilisierungselement 5 in den Mitnahmebereich eines Greifers 6 aufweist, der sich in einer Greiferführung 7 befindet und von einem nicht dargestellten Eintragband in das Webfach 8 eingeführt und wieder herausgezogen wird. Der Greifer 8 zieht den Schussfaden S₁ durch ein Webfach 8, welches aus oben liegenden Kettfäden 10 und unten liegenden Kettfäden 12 gebildet ist. Ein Webeblatt 14 dient zum Anschlagen des eingetragenen Schussfadens an einer Anschlagkante 16 einer Gewebebahn 18.The figures show the entry side of a rapier weaving machine with a weft thread feed device, which in the present case is designed as a weft thread changer, ie different thread guides 4 for alternately placing different weft threads S₁, S₂, S₃, S₃ via a stabilizing element 5 in the driving area of a gripper 6, which has is located in a gripper guide 7 and is inserted into the shed 8 from an entry belt (not shown) and pulled out again. The gripper 8 pulls the weft thread S 1 through a shed 8, which is formed from the top warp threads 10 and the bottom warp threads 12. A reed 14 serves to strike the inserted weft thread against a stop edge 16 of a fabric web 18.

An der Eintragseite liegt ausserhalb des Geweberandes 20 im Bereich der Anschlagkante 16 eine gegen das Webeblatt 14 offene Schere 22. Die Schere enthält eine untere maschinenfeste Scherenklinge 26 und eine obere in nicht näher dargestellter Weise, beispielsweise mittels bekannter Exzenter- oder Kurvengetriebe angetriebene Scherenklinge 24, die an einer Achse 28 verschwenkbar gelagert ist. Die obere Scherenklinge 24 ist weiter am freien Ende mit einer gegen die andere Scherenklinge 26 weisenden Rückhaltenase 30 für einen eingelegten Schussfaden S₁ oder S₂, S₃, S₄ ausgestattet. An der in Laufrichtung der Gewebebahn 18 Liegenden Seite enthält die obere Scherenklinge 24 einen Fanghaken 32, der mindestens den Schussfaden S₁ bzw. S₂ eines zuletzt eingetragenen Schusses 34 bezüglich der Schussfadenzuführvorrichtung 2 ausrichtet und führt.On the entry side, outside the fabric edge 20, in the area of the stop edge 16 there is a pair of scissors 22 open against the reed 14. The scissors contain a lower machine-fixed scissor blade 26 and an upper scissor blade 24, not shown in detail, for example by means of known eccentric or cam mechanisms, which is pivotally mounted on an axis 28. The upper scissor blade 24 is further equipped at the free end with a against the other scissor blade 26 retaining nose 30 for an inserted weft thread S₁ or S₂, S₃, S₄. On the side lying in the running direction of the fabric web 18, the upper scissor blade 24 contains a catch hook 32 which aligns and guides at least the weft thread S 1 or S 2 of a last weft 34 with respect to the weft feed device 2.

Dem Geweberand 20 ist weiter ein maschinenfestes Führungselement 36 zugeordnet, welches eine gegen das Webeblatt 14 gerichtete offene Gabel 38 enthält und zum Ausrichten der weiter vorne Liegenden, noch mit der Gewebebahn 18 verbundenen Schussfäden S₃, S₄ dient. Zwischen dem Führungselement 36 und der Schere 22 ist im Bereich der Schere 22, der Gabel 38 des Führungselementes 36 und des Fanghakens 32 eine Saugdüse 40 angeordnet, um die aus der Gewebebahn 28 herausragenden abgeschnittenen Schussfadenstücke 42 aus dem Bereich der noch mit der Schussfadenzuführvorrichtung verbundenen Schussfäden S₁, S₂, S₃, S₄ abzulenken, um Verwicklungen zu vermeiden. Das Webeblatt 14 ist mit einem Führungsglied 44 mit Haken ausgestattet, um den eingetragenen Schussfaden S₁ während des Anschlagvorganges über die obere Scherenklinge 24 hinwegzuführen.The fabric edge 20 is further assigned a machine-fixed guide element 36, which contains an open fork 38 directed against the reed 14 and is used for aligning the farther lying, still connected to the fabric web 18 weft threads S₃, S₄. Between the guide element 36 and the scissors 22, a suction nozzle 40 is arranged in the area of the scissors 22, the fork 38 of the guide element 36 and the catch hook 32, in order to remove the cut weft pieces 42 protruding from the fabric web 28 from the area of the weft threads still connected to the weft feed device Deflect S₁, S₂, S₃, S₄ to avoid complications. The reed 14 is equipped with a guide member 44 with hook to guide the registered weft thread S₁ during the beating process over the upper scissor blade 24.

Die Funktionsweise der Greiferwebmaschine wird anhand der Figuren 2 bis 4 näher beschrieben.The functioning of the rapier weaving machine is described in more detail with reference to FIGS. 2 to 4.

Die Figur 2 zeigt die Greiferwebmaschine in der Arbeitsphase, in der die Schussfadenzuführvorrichtung 2 mittels des Fadenführers 4 den Schussfaden S₁ in den Mitnahmebereich des Greifers 6 geführt hat und letzterer den Schussfaden S₁ bereits erfasst hat und sich auf dem Wege in das Webfach 8 befindet. Der Schussfaden S₁ ist dabei auf seiner der Schussfadenzuführvorrichtung 2 abgewandten Seite mit der Gewebebahn 18 verbunden und wird um den Fanghaken 32 in den Bereich der offenen Schere 22 geführt. Durch Betätigen der Schere 22 wird der Schussfaden S₁ durchtrennt, wobei die Rückhaltenase 30 verhindert, dass der Schussfaden aus der Schere 22 ausgleiten kann. Der Schussfaden wird nun, wie Figur 3 zeigt, vollständig in das Webfach eingezogen. Sobald der Greifer 6 den Schussfaden S₁ abgegeben hat und wieder in seine Ausgangsstellung gemäss Figur 4 zurückgekehrt ist, beginnt das Webeblatt 14 mit dem Anschlagen des eingetragenen Schussfadens S₁. Die Schere 22 ist in diesem Stadium geschlossen und das Webeblatt 14 führt den eingetragenen Schussfaden S₁ mittels des Fadenführungsgliedes 44 und des Hakens 46 über die obere Scherenklinge 24 hinter den Fanghaken 32. Der Fanghaken 32 richtet den Schussfaden S₁ bezüglich der Schussfadenzuführvorrichtung aus, sodass er mittels der Fadenführer 4 wieder genau definiert in den Mitnahmebereich des Greifers 6 eingebracht werden kann. Wird der Schussfaden S₁ über mehrere Schüsse nicht gebraucht, so wandert er mit der Gewebebahn 18 mit und wird vom Fanghaken 32 an die Gabel 38 des Führungselementes 36 abgegeben, wie dies für die Schussfäden S₃ und S₄ gezeigt ist.Figure 2 shows the rapier weaving machine in the working phase in which the weft feeder 2 has guided the weft S 1 into the driving area of the rapier 6 by means of the thread guide 4 and the latter has already gripped the weft S 1 and is on its way into the shed 8. The weft thread S 1 is connected to the fabric web 18 on its side facing away from the weft feed device 2 and is guided around the catch hook 32 into the area of the open scissors 22. By actuating the scissors 22, the weft thread S 1 is severed, the retaining lug 30 preventing the weft thread from sliding out of the scissors 22. As shown in FIG. 3, the weft thread is now drawn completely into the shed. As soon as the gripper 6 has released the weft S 1 and has returned to its starting position according to FIG. 4, the weaving blade 14 begins with the striking of the inserted weft S 1. The scissors 22 are closed at this stage and the reed 14 carries the registered weft S 1 by means of the thread guide member 44 and the hook 46 over the upper scissor blade 24 behind the catch hook 32. The catch hook 32 aligns the weft S 1 with respect to the weft feed device, so that it is by means of the thread guide 4 can again be brought into the driving area of the gripper 6 in a precisely defined manner. If the weft thread S 1 is not used over several shots, it migrates with the fabric web 18 and is released from the catch hook 32 to the fork 38 of the guide element 36, as is shown for the weft threads S 3 and S₄.

Claims (13)

1. Gripper loom having a pick feed device (2) for presenting at least one pick (S₁, S₂, S₃, S₄) into the gripping region of a gripper (6) arranged to be introduced into and withdrawn from a shed (8), furthermore having a shearing device (22) opening towards the weaving reed (14) and arranged at the entry side beyond the fabric edge (20) in the region of the fell (16) for cutting off a previously introduced and beaten-up pick (S₁, S₂, S₃, S₄) on renewed introduction into the shed (8), characterized in that the shearing device (22) is constructed and arranged so that during the beating-up movement of the weaving reed (14) on the one hand the shearing device (22) is closed and on the other hand the introduced pick (S₁) is arranged to be introduced by means of the weaving reed (14) over the upper shearing blade (24) into a catch hook (32) lying at the front.
2. A gripper loom according to claim 1, characterized in that associated with the fabric edge (20) it has a guide element (36) fixed to the machine for aligning the introduced and beaten-up pick (S₁, S₂, S₃, S₄) with respect to the pick feed device (2), the guide element (36) preferably being constructed as a fork (38) open towards the weaving reed (14).
3. A gripper loom according to claim 1 or 2, characterized in that the catch hook (32) is so constructed that is aligns at least the pick (S₁, S₂) of the most recently introduced weft (34) with respect to the pick feed device (2).
4. A gripper loom according to one of claims 1 to 3, characterized in that the catch hook (32) is arranged at the front side of the upper shearing blade (24).
5. A gripper loom according to one of claims 1 to 3, characterized in that the catch hook (32) is arranged at the front side of the lower shearing blade (26).
6. A gripper loom according to one of claims 1 to 5, characterized in that on the weaving reed (14) there is arranged a guide member (44) which guides the introduced pick (S₁) during the beating-up operation over the upper shearing blade (24).
7. A gripper loom according to one of claims 1 to 6, characterized in that one of the shearing blades (24, 26), preferably the upper shearing blade (24), has at its free end a retaining lug (30) for the introduced pick (S₁) pointing towards the other shearing blade (26).
8. A gripper loom according to one of claims 1 to 7, characterized in that the lower shearing blade (26) is driven.
9. A gripper loom according to one of claims 1 to 7, characterized in that the upper shearing blade (24) is driven.
10. A gripper loom according to one of claims 1 to 7, characterized in that the lower and the upper shearing blades (26, 24) are driven.
11. A gripper loom according to one of claims 1 to 10, characterized in that the pick feed device (2) is constructed as a pick changer for presenting different picks (S₁, S₂, S₃, S₄) to the gripper (6).
12. A gripper loom according to one of claims 1 to 11, characterized in that at least in the region of the shearing device (22) and the catch hook (32) there is arranged a suction nozzle (40) lying below the course of the picks (S₁, S₂, S₃, S₄) and facing towards the picks.
13. A gripper loom according to one of claims 1 to 12, characterized in that the suction nozzle (40) is arranged between the shearing device (22) and the guide element (36).
EP88111926A 1987-10-06 1988-07-25 Gripper needle loom Expired - Lifetime EP0310767B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH3906/87 1987-10-06
CH390687 1987-10-06

Publications (2)

Publication Number Publication Date
EP0310767A1 EP0310767A1 (en) 1989-04-12
EP0310767B1 true EP0310767B1 (en) 1991-08-21

Family

ID=4266045

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88111926A Expired - Lifetime EP0310767B1 (en) 1987-10-06 1988-07-25 Gripper needle loom

Country Status (7)

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US (1) US4913195A (en)
EP (1) EP0310767B1 (en)
JP (1) JP2683722B2 (en)
DE (2) DE3812960A1 (en)
ES (1) ES2025253B3 (en)
HK (1) HK104892A (en)
SG (1) SG105292G (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2762132B2 (en) * 1989-10-04 1998-06-04 津田駒工業株式会社 Weft insertion device for rapier looms
DE4008058A1 (en) * 1990-03-14 1991-09-19 Stoll & Co H NEEDLE AND THREAD CHANGING DEVICE FOR THREAD GUIDE
CH682498A5 (en) * 1990-10-05 1993-09-30 Walter Kleiner Schussfadenauswahl- and feeder loom.
DE59306205D1 (en) * 1993-09-20 1997-05-22 Rueti Ag Maschf Arrangement for placing weft threads
ES2176866T3 (en) * 1997-09-11 2002-12-01 Dornier Gmbh Lindauer CONTROLLABLE CONTRIBUTION AND SUPPORTING DEVICE FOR THE WEATHER THREAD AND SYSTEM TO REDUCE TO A MINIMUM THE WASTE OF THREAD THREADS IN THE MANUFACTURE OF FABRICS OF FABRICS, BEFORE EVERYTHING OF THE CLAMBERS.
BE1012676A3 (en) * 1999-05-12 2001-02-06 Wiele Michel Van De Nv DEVICE FOR IMPACT ON CANCELLATION a loom.
DE102006025265A1 (en) * 2006-05-31 2007-12-06 Lindauer Dornier Gmbh Method and apparatus for forming a fabric edge on a rapier loom
DE102008027140A1 (en) * 2008-05-30 2009-12-03 Picanol N.V. Method for cutting weft by weaving machine, particularly rapier loom, by opening and closing cutting device, involves forming cutting device for textile edge by movement of reed so that weft is guided over closed cutting device
EP3060707B1 (en) 2013-10-24 2019-10-02 Vandewiele NV Giver rapier head, giver rapier, rapier weaving machine and method for inserting a weft thread in such a rapier weaving machine using such a giver rapier head
BE1021782B1 (en) * 2013-10-24 2016-01-18 Nv Michel Van De Wiele THREADER, GRAIN WEAVING MACHINE AND METHOD FOR INSERTING AN IMPRESSION THREAD WITH SUCH A GRAINER IN SUCH A GRAIN WEAVING MACHINE
DE102015217356B3 (en) * 2015-09-10 2016-10-20 Lindauer Dornier Gesellschaft Mit Beschränkter Haftung Weaving machine with a device and method for holding, feeding and entering weft threads in a shed
CN111118708B (en) * 2020-03-09 2021-03-19 云南七彩丝绸有限公司 Unilateral yarn shearing device for double-rapier loom and application method thereof

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1110578B (en) * 1954-08-13 1961-07-06 Valentin Patent Ges G M B H Weft thread cutting device on looms
US3380482A (en) * 1965-05-15 1968-04-30 Nuovo Pignone Spa Device for positively cutting the weft in a shuttleless loom having a continuous weft-supply mechanism
FR1489089A (en) * 1966-05-06 1967-07-21 Alsacienne Constr Meca Weft mixing device for looms
DE2509664A1 (en) * 1975-03-06 1976-09-09 Scheibler Peltzer & Co Weft yarn control unit - for weft insertion in looms
DE2651875C3 (en) * 1976-11-13 1981-02-05 Lindauer Dornier-Gesellschaft Mbh, 8990 Lindau Device for beating up and cutting off weft threads entered in the shed in shuttleless weaving machines equipped with mixer changers
DE3243628C2 (en) * 1982-11-25 1985-01-24 Lindauer Dornier Gmbh, 8990 Lindau Shuttleless weaving machine with weft thread insertion by means of a gripper that is advanced into the shed and then withdrawn again
FR2542333B1 (en) * 1983-03-09 1985-08-02 Alsacienne Constr Mat Tex DEVICE FOR PRESENTING A WEFT IN FRONT OF A WEFT-PASSENGER NEEDLE OF WEAVING AND WEAVING MATERIAL PROVIDED WITH SUCH A DEVICE
DE3524727A1 (en) * 1985-07-11 1987-01-22 Dornier Gmbh Lindauer METHOD FOR PULLING THREADS IN PROTECTIVE WEAVING MACHINES THROUGH THE WEB TRAY AND WHICH IT IS RETURNED, WITH CLAMPING EQUIPMENT FOR THE SPRING GRIPPERS

Also Published As

Publication number Publication date
SG105292G (en) 1992-12-24
DE3812960A1 (en) 1989-04-20
HK104892A (en) 1992-12-31
JP2683722B2 (en) 1997-12-03
EP0310767A1 (en) 1989-04-12
ES2025253B3 (en) 1992-03-16
US4913195A (en) 1990-04-03
JPH01111044A (en) 1989-04-27
DE3864366D1 (en) 1991-09-26

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