EP0671494B1 - Ground warp separating and tensioning device for double plush looms, especially for carpet and velvet looms - Google Patents

Ground warp separating and tensioning device for double plush looms, especially for carpet and velvet looms Download PDF

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Publication number
EP0671494B1
EP0671494B1 EP95103357A EP95103357A EP0671494B1 EP 0671494 B1 EP0671494 B1 EP 0671494B1 EP 95103357 A EP95103357 A EP 95103357A EP 95103357 A EP95103357 A EP 95103357A EP 0671494 B1 EP0671494 B1 EP 0671494B1
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EP
European Patent Office
Prior art keywords
fabric
warp threads
binding warp
rollers
separating
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EP95103357A
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German (de)
French (fr)
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EP0671494A1 (en
Inventor
Carlos Derudder
Jonny Debaes
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    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D39/00—Pile-fabric looms
    • D03D39/16—Double-plush looms, i.e. for weaving two pile fabrics face-to-face
    • 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
    • D03D49/04—Control of the tension in warp or cloth
    • D03D49/22—Back rests; Lease rods; Brest beams

Definitions

  • the invention relates to a thread separating and tensioning device for double-piece weaving machines, in particular for carpet and velvet weaving machines.
  • the compartment is formed with the basic warp thread course for a single or no insertion into the upper fabric and a double insertion into the lower fabric, and for a second weft the basic warp thread course is created for a double weft insertion into the upper fabric and a single one or no weft insertion is formed in the lower tissue.
  • the binding chain for a first weft for example, must form a small compartment opening for a gripper and for the second weft must form a large or double compartment opening for two grippers. Furthermore, the bisectors of these small and large shed openings do not match, so that this separation roller arrangement is not sufficient to bring the binding warp thread layers to the same tension. One layer is tensioned, the other sags so that weaving becomes impossible.
  • the halving plane of the binding warp thread levels for the upper fabric runs from the fabric edge until it makes contact above the upper separating roller.
  • the bisecting plane of the binding warp thread levels extends from the fabric edge until it is far below the first separating roller.
  • FR-A-1.571.226 discloses a double piece weaving machine in which warp threads of a basic warp beam after passing by coating rolls by means of guide or dividing rolls into a first row of binding warp threads for the upper fabric and a second row of binding warp threads for the lower fabric be divided.
  • Each row of basic weave warp threads is divided into a first set and a second set, which sets cross each other between the guide rollers and the attachment point of the fabric pieces to form two superimposed basic weaving shed.
  • this object is achieved by the thread separating and tensioning device of claim 1 and the method for weaving a double-piece fabric according to claim 8.
  • the first set of separation rolls for a fabric is preferably attached to a system that is rotatably mounted with respect to a holder that supports the first set of separation rolls for the aforementioned fabric.
  • the two sets of separation rolls for the top fabric and the bottom fabric are attached to separate systems, the system for the second set of separation rolls for the top fabric with respect to a holder of a first set of separation rolls of binding warp threads of the upper fabric is rotatable, and the system for the second set of separating rollers for the lower fabric is rotatable with respect to a holder of a first set of separating rollers of binding warp threads of the lower fabric.
  • the system for a fabric comprises an element which is rotatable with respect to the first set of separating rollers about an axis which extends between the second rollers of the second set, preferably in the center between the two rollers.
  • the system for a fabric comprises an element which carries the second set of separating rollers for the binding warp threads of this fabric, and an arm to which the element is attached so that it is rotatable with respect to the holder of a first set of separating rollers .
  • the arm is preferably pivotally attached to the holder, which is adjustably attached to a part for adjusting the pile height to be woven and the lifting height of the binding warp threads.
  • the invention further relates to a double-piece weaving machine which is equipped with a device according to the invention in order to obtain virtually the same, and preferably the same, binding warp thread tension in the upper and lower binding warp yarns.
  • the weaving machine has three grippers lying one above the other.
  • Figure 1 shows a device according to the invention, which is shown in perspective in Figure 3.
  • binding warp threads run first on the first set and then on the second set before they are woven.
  • the second set of separation rollers 5A, 5B; 9A, 9B is attached to a system 10, which with respect to the holder 11, which the first set of separation rollers 2A, 2B; 6A, 6B, is rotatable.
  • the tubes 5A, 5B are preferably attached to an element or spacer 18 at both ends. These tubes form a cross bar 120, between which the binding warp threads are cross.
  • the common holder 11 of the two sets of separation rolls of the binding warp threads of a fabric can be moved along a rod 16 (arrow X) to adjust the pile height, the rod 16 being fixed to the frame 17 of the device.
  • the cross rods 120 can pivot together under the influence of a pulling force of the binding warp threads for each subsequent position of the binding warp threads in the direction of the variable bisecting plane V of the binding warp thread planes.
  • the difference in length between the upper and the lower binding warp thread layer is received by the rotation of the cross bars around the center point between them on the spacer element, which is rotatable on the connecting rod. In this way, the same binding warp thread tension is obtained in the upper and lower binding warp layer.
  • FIG. 4 shows the basic warp thread course in the case of a first weft of a double-piece weaving machine with three hooks.
  • This weaving machine comprises a device according to FIG. 1 with shed forming means or weaving frames 20, 21, which bring the tension warp threads 22A, 22B into the required position for forming the shed (up or down), and weaving frames 23, 24, 25, 26, which the Binding warp threads of the upper fabric or Bring the lower fabric into the required position to form the shed for simultaneous weft insertion in three compartments.
  • FIG. 4 shows the compartment 27 between the binding warp threads 3, 4 (upper fabric B) with a looper bar for introducing a single weft of a weft warp with a looper bar 28, whereas the compartment 29 of the lower fabric O for double weft insertion is formed with looper bars 30 and 31.
  • the compartment 27 for double-shot insertion is formed with the gripper rods 28, 30, whereas the compartment 29 is designed for single-shot insertion.
  • the weaving frames 20 move downward for the upper fabric B (movement of the tension warp threads 22 downwards) and the weaving frame 24 moves downwards in order to enlarge the compartment 27 in such a way that two weft threads with the looper rods 28, 30 can be introduced.
  • binding warp threads 4 are thus pulled down while the set of crossbars pivots in the direction of the bisecting plane and the crossbars pivot about their center (P) to accommodate the difference in length between the upper and lower binding warp thread layers.

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

Description

Die Erfindung bezieht sich auf eine Faden-Trenn- und Spannvorrichtung für Doppelstück-Webmaschinen, insbesondere für Teppich- und Samtwebmaschinen.The invention relates to a thread separating and tensioning device for double-piece weaving machines, in particular for carpet and velvet weaving machines.

Im Falle einer Dreifach-Greifer-Webmaschine für Teppich und Samt ist es zweckmäßig, zuerst gleichzeitig einen Schußfaden in das Obergewebe und zwei Schußfäden in das Untergewebe einzubringen, und dann zwei Schußfäden in das Obergewebe und einen Schußfaden in das Untergewebe einzubringen. Dies ist der Fall, wenn man ein Dreischuß-Gewebe in zwei Arbeitszyklen oder zwei Durchläufen der Webmaschine erhalten will. Für ein bekanntes Zweischußgewebe ist es zweckmäßig, z.B. gleichzeitig keinen Schußfaden in das Obergewebe und zwei Schußfäden in das Untergewebe einzubringen, und dann zwei Schußfäden in das Obergewebe und keinen Schußfaden in das Untergewebe einzubringen. Bei diesem aus der EP-A-0 576 990 bekannten Verfahren wird in jedem Falle die obere oder die untere Schußeinbringungvorrichtung abgeschaltet.In the case of a triple rapier weaving machine for carpet and velvet, it is expedient to first insert a weft thread into the upper fabric and two weft threads into the lower fabric at the same time, and then insert two weft threads into the upper fabric and one weft thread into the lower fabric. This is the case if you want to obtain a three-weft fabric in two working cycles or two passes of the weaving machine. For a known two-weft fabric, it is useful, for example, to insert no weft thread into the upper fabric and two weft threads into the lower fabric at the same time, and then to insert two weft threads into the upper fabric and no weft thread into the lower fabric. In this method known from EP-A-0 576 990, the upper or the lower weft insertion device is switched off in any case.

Bei diesem bekannten Verfahren wird für einen ersten Schuß das Fach mit dem Grundkettfadenverlauf für ein einziges oder kein Einbringen in das Obergewebe und ein doppeltes Einbringen in das Untergewebe gebildet, und für einen zweiten Schuß wird der Grundkettfadenverlauf für ein doppeltes Schußeinbringen in das Obergewebe und ein einziges oder kein Schußeinbringen in das Untergewebe gebildet.In this known method, for a first weft, the compartment is formed with the basic warp thread course for a single or no insertion into the upper fabric and a double insertion into the lower fabric, and for a second weft the basic warp thread course is created for a double weft insertion into the upper fabric and a single one or no weft insertion is formed in the lower tissue.

Aus diesem Bilden des Kettfadenverlaufs für beide Fälle kann geschlossen werden, daß die Bindekette für einen ersten Schuß beispielsweise eine kleine Fachöffnung für einen Greifer bilden muß und für den zweiten Schuß eine große oder doppelte Fachöffnung für zwei Greifer bilden muß. Ferner stimmen die Halbierenden dieser kleinen und großen Fachöffnungen nicht überein, so daß diese Trennrollenanordnung nicht ausreicht, um die Bindekettfadenlagen auf die gleiche Spannung zu bringen. Eine Lage wird gespannt, die andere hängt durch, so daß ein Weben unmöglich wird.From this formation of the warp thread course for both cases it can be concluded that the binding chain for a first weft, for example, must form a small compartment opening for a gripper and for the second weft must form a large or double compartment opening for two grippers. Furthermore, the bisectors of these small and large shed openings do not match, so that this separation roller arrangement is not sufficient to bring the binding warp thread layers to the same tension. One layer is tensioned, the other sags so that weaving becomes impossible.

Für das Obergewebe verläuft für einen ersten Schußzyklus die Halbierungsebene der Bindekettfadenebenen vom Geweberand bis sie oberhalb der oberen Trennrolle Kontakt herstellt. Für das Untergewebe verläuft für den zweiten Schuß die Halbierungsebene der Bindekettfadenebenen vom dem Geweberand bis sie weit unterhalb der ersten Trennrolle ist. Für das Untergewebe kann eine ähnliche Anordnung erreicht werden.For a first weft cycle, the halving plane of the binding warp thread levels for the upper fabric runs from the fabric edge until it makes contact above the upper separating roller. For the lower fabric, for the second weft, the bisecting plane of the binding warp thread levels extends from the fabric edge until it is far below the first separating roller. A similar arrangement can be achieved for the lower tissue.

Die FR-A-1.571.226 offenbart eine Doppelstück-Webmaschine, in welcher Kettfäden eines Grundkett-Baums nach dem Vorbeilauf an Streichrollen vermittels von Führungs- oder Aufteilungsrollen in eine erste Reihe von Bindekettfäden für das Obergewebe und eine zweite Reihe von Bindekettfäden für das Untergewebe aufgeteilt werden. Jede Reihe von Grundbindungs-Kettfäden ist in einen ersten Satz und einen zweiten Satz aufgeteilt, welche Sätze sich jeweils zwischen den Führungsrollen und der Anschlagstelle der Gewebestücke kreuzen, um zwei übereinander liegende Grund-Webfächer zu bilden.FR-A-1.571.226 discloses a double piece weaving machine in which warp threads of a basic warp beam after passing by coating rolls by means of guide or dividing rolls into a first row of binding warp threads for the upper fabric and a second row of binding warp threads for the lower fabric be divided. Each row of basic weave warp threads is divided into a first set and a second set, which sets cross each other between the guide rollers and the attachment point of the fabric pieces to form two superimposed basic weaving shed.

Es ist die Aufgabe der vorliegenden Erfindung, eine Vorrichtung und ein Verfahren zum Erhalten von faktisch der gleichen Bindekettfadenspannung, vorzugsweise der gleichen, in der oberen und der unteren Bindekettfadenlage vorzusehen.It is the object of the present invention to provide an apparatus and a method for obtaining virtually the same binding warp thread tension, preferably the same, in the upper and lower binding warp thread layers.

Gemäß der vorliegenden Erfindung wird diese Aufgabe durch die Faden-Trenn- und Spann vorrichtung des Anspruchs 1 sowie das Verfahren zum Weben eines Doppelstück-Gewebes gemäß Anspruch 8 gelöst.According to the present invention, this object is achieved by the thread separating and tensioning device of claim 1 and the method for weaving a double-piece fabric according to claim 8.

Der erste Satz von Trennrollen für ein Gewebe ist vorzugsweise an einem System angebracht, welches bezüglich eines Halters drehbar angebracht ist, der den ersten Satz von Trennrollen für das vorangehend erwähnte Gewebe trägt. Zum Beispiel sind für das Obergewebe und das Untergewebe, welche gewebt werden, die beiden Sätze von Trennrollen für das Obergewebe und das Untergewebe an separaten Systemen angebracht, wobei das System für den zweiten Satz von Trennrollen für das Obergewebe bezüglich eines Halters eines ersten Satzes von Trennrollen von Bindekettfäden des Obergewebes drehbar ist, und das System für den zweiten Satz von Trennrollen für das Untergewebe bezüglich eines Halters eines ersten Satzes von Trennrollen von Bindekettfäden des Untergewebes drehbar ist.The first set of separation rolls for a fabric is preferably attached to a system that is rotatably mounted with respect to a holder that supports the first set of separation rolls for the aforementioned fabric. For example, for the top fabric and the bottom fabric being woven, the two sets of separation rolls for the top fabric and the bottom fabric are attached to separate systems, the system for the second set of separation rolls for the top fabric with respect to a holder of a first set of separation rolls of binding warp threads of the upper fabric is rotatable, and the system for the second set of separating rollers for the lower fabric is rotatable with respect to a holder of a first set of separating rollers of binding warp threads of the lower fabric.

Gemäß einer Ausführungsform umfaßt das System für ein Gewebe ein Element, welches bezüglich des ersten Satzes von Trennrollen um eine Achse drehbar ist, welche sich zwischen den zweiten Rollen des zweiten Satzes, vorzugsweise in dem Mittelpunkt zwischen den beiden Rollen, erstreckt.According to one embodiment, the system for a fabric comprises an element which is rotatable with respect to the first set of separating rollers about an axis which extends between the second rollers of the second set, preferably in the center between the two rollers.

Gemäß einer weiteren Ausführungsform umfaßt das System für ein Gewebe ein Element, welches den zweiten Satz von Trennrollen für die Bindekettfäden dieses Gewebes trägt, sowie einen Arm, an welchem das Element angebracht ist, so daß es bezüglich des Halters eines ersten Satzes von Trennrollen drehbar ist.According to a further embodiment, the system for a fabric comprises an element which carries the second set of separating rollers for the binding warp threads of this fabric, and an arm to which the element is attached so that it is rotatable with respect to the holder of a first set of separating rollers .

Der Arm ist vorzugsweise an dem Halter schwenkbar angebracht, welcher an einem Teil zur Einstellung der zu webenden Polhöhe und der Anhebehöhe der Bindekettfäden einstellbar angebracht ist.The arm is preferably pivotally attached to the holder, which is adjustably attached to a part for adjusting the pile height to be woven and the lifting height of the binding warp threads.

Die Erfindung bezieht sich ferner auf eine Doppelstück-Webmaschine, welche mit einer Vorrichtung gemäß der Erfindung ausgestattet ist, um faktisch die gleiche, und vorzugsweise die gleiche, Bindekettfadenspannung bei den oberen und unteren Bindekettgarnen zu erhalten. Insbesondere weist die Webmaschine drei übereinander liegende Greifer auf.The invention further relates to a double-piece weaving machine which is equipped with a device according to the invention in order to obtain virtually the same, and preferably the same, binding warp thread tension in the upper and lower binding warp yarns. In particular, the weaving machine has three grippers lying one above the other.

Weitere Kennzeichen und Details der Erfindung werden aus der nachfolgenden Beschreibung, welche mit Bezug auf die beiliegenden Zeichnungen gegeben wird, offensichtlich, in welchen:

  • Figuren 1 und 2 eine Vorrichtung gemäß der Erfindung in einer Doppelstück-Webmaschine während des Einführens von einem Schußfaden bzw. zwei Schußfäden in das Obergewebe zeigen;
  • Figur 3 die Vorrichtung gemäß der Erfindung, welche in Figur 1 gezeigt ist, in Perspektive zeigt;
  • Figuren 4 und 5 in Perspektive die Vorrichtung und teilweise die Maschine der Figuren 1 und 2 zeigen.
Further features and details of the invention will become apparent from the following description given with reference to the accompanying drawings, in which:
  • Figures 1 and 2 show a device according to the invention in a double piece weaving machine during the insertion of one weft or two wefts into the upper fabric;
  • Figure 3 shows the device according to the invention shown in Figure 1 in perspective;
  • Figures 4 and 5 show in perspective the device and partially the machine of Figures 1 and 2.

Die Figur 1 zeigt eine Vorrichtung gemäß der Erfindung, welche in Figur 3 perspektivisch gezeigt ist.Figure 1 shows a device according to the invention, which is shown in perspective in Figure 3.

Die Vorrichtung umfaßt:

  • für das Obergewebe einen ersten Satz von Trennrollen 2A, welche die Bindekettfäden 3, 4 von der Spannkette trennen, und
  • einen zweiten Satz von Trennrollen 5A, 5B für die Bindekettfäden alleine, wobei die Bindekettfäden sich zwischen den Rollen 5A, 5B des zweiten Satzes kreuzen, und
  • für das Untergewebe einen ersten Satz von Trennrollen 6A, 6B, wobei die Trennrollen 6B die Bindekettfäden 7, 8 von der Spannkette trennen, und einen zweiten Satz von Trennrollen 9A, 9B für die Bindekettfäden alleine, wobei die Bindekettfäden 7, 8 sich zwischen den Rollen 9A, 9B des zweiten Satzes kreuzen.
The device comprises:
  • for the upper fabric a first set of separation rollers 2A, which separate the binding warp threads 3, 4 from the tension chain, and
  • a second set of separating rollers 5A, 5B for the binding warp threads alone, the binding warp threads crossing between the rollers 5A, 5B of the second set, and
  • for the lower fabric a first set of separating rollers 6A, 6B, the separating rollers 6B separating the binding warp threads 7, 8 from the tension chain, and a second set of separating rollers 9A, 9B for the binding warp threads alone, the binding warp threads 7, 8 being between the rollers Cross 9A, 9B of the second set.

Die Bindekettfäden laufen zunächst auf den ersten Satz und dann auf den zweiten Satz, bevor sie gewebt werden.The binding warp threads run first on the first set and then on the second set before they are woven.

Der zweite Satz von Trennrollen 5A, 5B; 9A, 9B ist an einem System 10 angebracht, welches bezüglich des Halters 11, welcher den ersten Satz von Trennrollen 2A, 2B; 6A, 6B trägt, drehbar ist.The second set of separation rollers 5A, 5B; 9A, 9B is attached to a system 10, which with respect to the holder 11, which the first set of separation rollers 2A, 2B; 6A, 6B, is rotatable.

Das System 10 umfaßt:

  • ein Element oder ein Abstandselement 18, an welchem zwei parallele Rohre oder Stangen 5A, 5B drehbar oder in sonstiger Weise festgelegt sind,
  • einen Arm oder eine Verbindungsstange 13, an welcher das Abstandselement 18 in dem Mittelpunkt M zwischen den Rohren 5A, 5B drehbar festgelegt ist,
  • ein Verbindungsstück 14, an welchem der Arm oder die Verbindungsstange 13 drehbar festgelegt ist, und
  • einen gemeinsamen Halter 11 der beiden Sätze von Trennrollen, welcher in seiner Höhe zum Einstellen der zu webenden Polhöhe und der Anhebehöhe der Grundkettfäden einstellbar ist.
System 10 includes:
  • an element or a spacer element 18, on which two parallel tubes or rods 5A, 5B are rotatably or otherwise fixed,
  • an arm or a connecting rod 13 on which the spacer element 18 is rotatably fixed in the center M between the tubes 5A, 5B,
  • a connector 14 on which the arm or the connecting rod 13 is rotatably fixed, and
  • a common holder 11 of the two sets of separating rollers, which is adjustable in height for adjusting the pile height to be woven and the lifting height of the base warp threads.

Die Rohre 5A, 5B sind vorzugsweise an beiden Enden an einem Element oder Abstandselement 18 festgelegt. Diese Rohre bilden eine Kreuzstange 120, zwischen welcher die Bindekettfäden sich kreuzen.The tubes 5A, 5B are preferably attached to an element or spacer 18 at both ends. These tubes form a cross bar 120, between which the binding warp threads are cross.

Der gemeinsame Halter 11 der beiden Sätze von Trennrollen der Bindekettfäden eines Gewebes kann entlang einer Stange 16 (Pfeil X) verschoben werden, um die Polhöhe einzustellen, wobei die Stange 16 an dem Rahmen 17 der Vorrichtung festgelegt ist.The common holder 11 of the two sets of separation rolls of the binding warp threads of a fabric can be moved along a rod 16 (arrow X) to adjust the pile height, the rod 16 being fixed to the frame 17 of the device.

Aufgrund der Tatsache, daß die Verbindungsstangen 13 drehbar an dem Verbindungsteil 14 festgelegt sind, können die Kreuzstangen 120 gemeinsam unter dem Einfluß einer Ziehkraft der Bindekettfäden für jede nachfolgende Position der Bindekettfäden in Richtung der veränderbaren Halbierungsebene V der Bindekettfadenebenen schwenken. Der Längenunterschied zwischen der oberen und der unteren Bindekettfadenlage wird durch die Drehung der Kreuz stangen um den Mittelpunkt zwischen diesen an dem Abstandselement aufgenommen, welches auf der Verbindungsstange drehbar ist. Auf diese Art und Weise wird in der oberen und der unteren Bindekettfadenlage die gleiche Bindekettfadenspannung erhalten.Due to the fact that the connecting rods 13 are rotatably attached to the connecting part 14, the cross rods 120 can pivot together under the influence of a pulling force of the binding warp threads for each subsequent position of the binding warp threads in the direction of the variable bisecting plane V of the binding warp thread planes. The difference in length between the upper and the lower binding warp thread layer is received by the rotation of the cross bars around the center point between them on the spacer element, which is rotatable on the connecting rod. In this way, the same binding warp thread tension is obtained in the upper and lower binding warp layer.

Mit dieser Vorrichtung ist es perfekt möglich, mit drei übereinanderliegenden Greifern, und in dem Falle, in welchem verschiedene Bindekettenfächer bei den aufeinanderfolgenden Schuß-Einbringungszyklen gebildet werden, zu weben.With this device it is perfectly possible to weave with three overlapping grippers, and in the case where different binding chain compartments are formed in the successive weft insertion cycles.

Die Figur 4 zeigt den Grundkettfadenverlauf in dem Falle eines ersten Schusses einer Doppelstück-Webmaschine mit drei Greifern.FIG. 4 shows the basic warp thread course in the case of a first weft of a double-piece weaving machine with three hooks.

Diese Webmaschine umfaßt eine Vorrichtung gemäß der Figur 1 mit Fachbildungsmitteln oder Webrahmen 20, 21, welche die Spannkettfäden 22A, 22B in die erforderliche Position zum Bilden des Webfaches (oben oder unten) bringen, und Webrahmen 23, 24, 25, 26, welche die Bindekettfäden des Obergewebes bzw. des Untergewebes in die erforderliche Position zum Bilden des Webfaches zum gleichzeitigen Schußeinführen in drei Fächer bringen.This weaving machine comprises a device according to FIG. 1 with shed forming means or weaving frames 20, 21, which bring the tension warp threads 22A, 22B into the required position for forming the shed (up or down), and weaving frames 23, 24, 25, 26, which the Binding warp threads of the upper fabric or Bring the lower fabric into the required position to form the shed for simultaneous weft insertion in three compartments.

In Figur 4 ist das Fach 27 zwischen den Bindekettfäden 3, 4 (Obergewebe B) mit einer Greiferstange zum Einbringen eines einzigen Schusses eines Schußkettfadens mit einer Greiferstange 28 gezeigt, wogegen das Fach 29 des Untergewebes O zur Doppelschußeinbringung mit Greiferstangen 30 und 31 gebildet ist.FIG. 4 shows the compartment 27 between the binding warp threads 3, 4 (upper fabric B) with a looper bar for introducing a single weft of a weft warp with a looper bar 28, whereas the compartment 29 of the lower fabric O for double weft insertion is formed with looper bars 30 and 31.

In Figur 5 (zweiter Schuß) ist das Fach 27 zur Doppelschußeinbringung mit den Greiferstangen 28, 30 gebildet, wogegen das Fach 29 zur Einzelschußeinbringung gebildet ist.In FIG. 5 (second shot), the compartment 27 for double-shot insertion is formed with the gripper rods 28, 30, whereas the compartment 29 is designed for single-shot insertion.

Zwischen dem Schuß 1 und dem Schuß 2 bewegen sich für das Obergewebe B die Webrahmen 20 nach unten (Bewegung der Spannkettfäden 22 nach unten) und der Webrahmen 24 bewegt sich nach unten, um das Fach 27 derart zu vergrößern, daß zwei Schußfäden mit den Greiferstangen 28, 30 eingebracht werden können.Between the weft 1 and the weft 2, the weaving frames 20 move downward for the upper fabric B (movement of the tension warp threads 22 downwards) and the weaving frame 24 moves downwards in order to enlarge the compartment 27 in such a way that two weft threads with the looper rods 28, 30 can be introduced.

Die Bindekettfäden 4 sind somit nach unten gezogen, während der Satz von Kreuzstangen in Richtung der Halbierungsebene schwenkt und die Kreuzstangen um ihren Mittelpunkt schwenken (P), um den Längenunterschied zwischen den oberen und den unteren Bindekettfadenlagen aufzunehmen.The binding warp threads 4 are thus pulled down while the set of crossbars pivots in the direction of the bisecting plane and the crossbars pivot about their center (P) to accommodate the difference in length between the upper and lower binding warp thread layers.

Claims (8)

  1. Thread separating and tensioning device for a face-to-face pile fabric loom for weaving a face-to-face fabric consisting of a top fabric and a bottom fabric, wherein the top fabric and the bottom fabric each time comprise binding warp threads and tensioning warp threads, which device comprises two sets of separating rollers (5A, 5B, 9A, 9B) to divide the ground warp threads into binding warp threads (3, 4, 7, 8), characterised in that the device comprises a first set (2A, 2B, 6A, 6B) and a second set (5A, 5B, 9A, 9B) of separating rollers per fabric, the first set of separating rollers (2A, 2B, 6A, 6B) separating the ground warp threads for a fabric into binding warp threads (3, 4, 7, 8) and tensioning warp threads and the binding warp threads (3, 4, 7, 8) of each fabric crossing each other between the rollers of the second set of separating rollers (5A, 5B, 9A, 9B) concerned and are separated into two different sets of binding warp threads for the fabric concerned.
  2. Device according to claim 1, characterised in that the second set of separating rollers for a fabric is installed on a system (10) which is rotatable, with respect to a holder (11), carrying the first set of separating rollers for the aforementioned fabric.
  3. Device according to claim 2, characterised in that the system (10) comprises an element (18) which, with respect to the first set of separating rollers, is rotatable round an axis extending between the two rollers (5A, 5B) of the second set, preferably in the centre between those rollers.
  4. Device according to claim 2, characterised in that the system comprises an element (18) which carries a second set of separating rollers (5A, 5B) as well as an arm (13) on which the element (18) is installed in such a way, that it is rotatable with respect to the holder (11) of the first set of separating rollers.
  5. Device according to claim 4, characterised in that the arm (13) has been installed on the holder (11) in a rotatable manner, and that the holder has been installed on a part (17) to regulate the pile height to be weaved and the lifting height of the binding warp threads.
  6. Loom, which is equipped with a device, according to one of the preceding claims, practically to maintain the same binding warp thread tension with a top and a bottom binding warp thread.
  7. Loom according to claim 6, comprising three pickers lying one above the other.
  8. Method for weaving a face-to-face fabric consisting of a top fabric and a bottom fabric on a face-to-face weaving loom, whereby, to weave the top fabric and the bottom fabric each time binding warp threads (3, 4, 7, 8) and tensioning warp threads are provided for the top fabric and for the bottom fabric, characterised in that the method comprises the following steps:
    a) The separation of the tensioning warp threads for the top fabric and the tensioning warp threads for the bottom fabric from the binding warp threads for the top fabric, the binding warp threads for the bottom fabric respectively, by means of a first set of separating rollers (2A, 2B, 6A, 6B) for the top fabric and for the bottom fabric,
    b) The division of the binding warp threads of the top fabric and the bottom fabric separated in step a) from the tensioning warp threads, each time into two different sets of binding warp threads by means of the second set of separating rollers (5a, 5B, 9A, 9B) concerned, for the top fabric and for the bottom fabric,
    the binding warp threads for the top fabric and for the bottom fabric each time having been divided into two sets by the second set of separating rollers (5A, 5B, 9A, 9B) each time assigned to them, such that the binding warp threads of the two sets concerned cross each other between the rollers of the second set of separating rollers (5A, 5B, 9A, 9B) assigned to them each time.
EP95103357A 1994-03-11 1995-03-08 Ground warp separating and tensioning device for double plush looms, especially for carpet and velvet looms Expired - Lifetime EP0671494B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE9400273 1994-03-11
BE9400273A BE1008130A4 (en) 1994-03-11 1994-03-11 GRONDKETTINGGARENSCHEIDINGS- AND TENSION DEVICE FOR weaving, ESPECIALLY for carpet and VELVET LOOMS.

Publications (2)

Publication Number Publication Date
EP0671494A1 EP0671494A1 (en) 1995-09-13
EP0671494B1 true EP0671494B1 (en) 1997-12-17

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Application Number Title Priority Date Filing Date
EP95103357A Expired - Lifetime EP0671494B1 (en) 1994-03-11 1995-03-08 Ground warp separating and tensioning device for double plush looms, especially for carpet and velvet looms

Country Status (4)

Country Link
US (1) US5615712A (en)
EP (1) EP0671494B1 (en)
BE (1) BE1008130A4 (en)
DE (1) DE59501113D1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3312323B1 (en) 2016-10-19 2019-04-24 Tsudakoma Kogyo Kabushiki Kaisha Warp let-off device of loom

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BE1014127A3 (en) * 2001-04-20 2003-05-06 Wiele Michel Van De Nv DEVICE FOR SEPARATION OF CHAIN ​​YARN IN weaving.
BE1014721A5 (en) * 2002-03-22 2004-03-02 Wiele Michel Van De Nv AND METHOD FOR loom weaving fabrics with pile loops.
BE1016032A6 (en) * 2004-02-25 2006-01-10 Wiele Michel Van De Nv Method and apparatus for weaving fabrics with pool distance holder and double holder elements.
US7520303B2 (en) * 2005-06-24 2009-04-21 N.V. Michel Van De Wiele Method for weaving a fabric, fabric woven by means of such a method and weaving machine for weaving such a fabric
BRPI0615599B1 (en) * 2005-09-02 2016-05-31 Textilma Ag method for producing a plush double-sided velvet ribbon and tape weaving machine to perform said method
BE1016883A3 (en) * 2005-12-06 2007-09-04 Wiele Michel Van De Nv METHOD FOR MANUFACTURING POOL WOVEN WITH HIGH DENSITY
BE1017367A4 (en) * 2006-11-17 2008-07-01 Wiele Michel Van De Nv WEAVING MACHINE FOR WEAVING POOL WEAVES, AND A SET OF AT LEAST TWO DISTANCE HOLDERS PROVIDED NEXT TO EACH OTHER IN A WEAVING MACHINE FOR WEAVING POOL WEAVES.
BE1017831A3 (en) * 2007-10-31 2009-08-04 Wiele Michel Van De Nv DEVICE AND METHOD FOR WEAVING POOL WOVEN WITH IMPROVED YARN FEED.
EP2251467B1 (en) * 2009-05-13 2013-08-07 SCHÖNHERR Textilmaschinenbau GmbH Method for simultaneously weaving two fabrics, fabric adapted to be woven with such a method and loom usable with such a method
CN102154767B (en) * 2011-04-11 2012-02-22 青岛同春机电科技有限公司 High-efficiency weaving and let-off method for double-layer lint
CN102121160A (en) * 2011-04-11 2011-07-13 青岛同春机电科技有限公司 Yarn distributing device for weaving double-layer fabric
CN102121158B (en) * 2011-04-11 2012-09-12 青岛同春机电科技有限公司 High-speed jet loom for weaving double-layer flannelette

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Cited By (1)

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Publication number Priority date Publication date Assignee Title
EP3312323B1 (en) 2016-10-19 2019-04-24 Tsudakoma Kogyo Kabushiki Kaisha Warp let-off device of loom

Also Published As

Publication number Publication date
EP0671494A1 (en) 1995-09-13
BE1008130A4 (en) 1996-01-23
US5615712A (en) 1997-04-01
DE59501113D1 (en) 1998-01-29

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