EP0123772B1 - Weft inserting device for weaving machines - Google Patents

Weft inserting device for weaving machines Download PDF

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Publication number
EP0123772B1
EP0123772B1 EP84100096A EP84100096A EP0123772B1 EP 0123772 B1 EP0123772 B1 EP 0123772B1 EP 84100096 A EP84100096 A EP 84100096A EP 84100096 A EP84100096 A EP 84100096A EP 0123772 B1 EP0123772 B1 EP 0123772B1
Authority
EP
European Patent Office
Prior art keywords
weft thread
gripper
weft
shuttle
transfer position
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
EP84100096A
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German (de)
French (fr)
Other versions
EP0123772A1 (en
Inventor
Dietmar Averweg
Axel Hundertmark
Heinrich Berger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Emil Jager & Co KG GmbH
Original Assignee
Emil Jager & Co KG GmbH
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 Emil Jager & Co KG GmbH filed Critical Emil Jager & Co KG GmbH
Priority to AT84100096T priority Critical patent/ATE24212T1/en
Publication of EP0123772A1 publication Critical patent/EP0123772A1/en
Application granted granted Critical
Publication of EP0123772B1 publication Critical patent/EP0123772B1/en
Expired legal-status Critical Current

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Classifications

    • 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 device for inserting weft threads in weaving machines according to the preamble of the main claim.
  • a device for inserting weft threads in weaving machines belongs to the prior art and is described in the unpublished DE-U-8 302 758.
  • a device is known in which weft threads coming from the supply bobbins are guided in weft holding devices arranged in the area of the selvedge, which can be individually controlled from a rest position to a transfer position and thereby the weft thread to be integrated into one Lead transfer position.
  • the object of this known device is to create a weaving machine in which the weft thread is subject to the lowest possible tension when the rapier guards are driven in.
  • a clamping device as described in DE-U-8 302 758 is not disclosed in this reference.
  • the invention is based on the object of avoiding the pivotable clamping device still required in the generic device in order to thereby achieve a higher speed, while at the same time avoiding the cutting devices still required in the known devices.
  • the weft thread is thus guided into the area of the gripper pliers of the rapier protection and automatically cut off on the cutting edge built into the robe when the gripper protection is moved, this free thread end then being held by the catching device arranged in the area of the selvedge, which other thread end is pulled through the shed by the rapier.
  • the drawing shows the area of the thread transfer on a weaving machine, with the feeder standing in the raised position, the weft holding device in the lowered position and the looper shooter on the way back.
  • weft holding devices consist, for example, of hydraulically or pneumatically operated cylinders with piston rods 2 which can be guided therein and which have an eyelet 4 at their lower end which serves to guide the weft thread 3.
  • the weft feeder can be seen, which essentially consists of a laterally open U-shaped guide body 6, a cutting edge 7 being arranged in the lower region of the U leg, which is ground in the direction of the weft holding device 1.
  • a small guide slot 8 is provided in front of the cutting edge 7 in the leg of the U-shaped guide body, which is used to receive and guide the weft thread.
  • the fabric can be seen at 9, the open compartment at 10 and a thread catcher at 11, in which the cut weft threads are held in order to prevent the fabric from dissolving in this area.
  • the gripper shooter is shown, who is equipped in a manner known per se with a gripper 14 and runs in a guideway 15.
  • a weft guide 16 also consists of a hydraulically or pneumatically operated cylinder, in which a plunger 17 is displaceable, which is equipped at its end with a cross plunger 18 and is able to remove the weft thread from the U-shaped guide body through its open side push out.
  • the feeder 5 is then guided downward and the weft thread 3 enters the slot 8 and in front of the cutting edge 7 of the guide body 6.
  • the shooter When the shooter moves counter to the arrow F, i.e. So when the shooter moves in for the weft thread, the shooter first grips with the gripping tongs 14 the part of the weft thread 3 protruding into the path of the gripping tongs 14 (to the right of the eye shown in the drawing). Then the gripper shooter 12 then leads the weft thread 3 in front of the cutting edge 7, so that the weft thread 3 is now cut off by the cutting edge 7. The free end of the weft thread 3 which is thus executed for the fabric is held in the catching device 11, and on the other hand the end of the weft thread 3 gripped by the gripping pliers 14 is pulled through the fabric. It should be noted here that the gripping tongs 14 are guided through the free space formed by the “U”, ie above the lower leg of the serving mat 5, during the shooter's flight.
  • the thread deflector 19 prevents the threads held by the weft thread holding devices 1, but already integrated in the fabric, from reaching the area of movement of the guide body 6 or of the feeder 5.

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

Abstract

1. Weft thread picking device in weaving machines, with supply bobbins arranged in stationary manner and with a gripper shuttle equipped with gripper tongs, two or more mutually independent weft threads which come from the supply bobbins and are tied in the web being guided in weft thread holding devices arranged in the region of the selvedge, these holding devices being guidable in individually controllable manner from a position of rest into a transfer position and guiding the respective weft thread to be tied-in into a transfer position from which it is guidable by means of a presenting element into a transfer position to the gripper shuttle in which latter position it can be gripped by the gripper tongs of the shuttle, characterised in that the presenting element (5) transferring the weft thread (3) from the weft thread holding device (1) to the gripper shuttle (12) is constructed as a guide element (6) which is adapted to be moved upwards and downwards and which in its lower region comprises a cutting edge (7) directed towards the weft thread holding device (1).

Description

Die Erfindung bezieht sich auf eine Vorrichtung zum Eintragen von Schussfäden bei Webmaschinen gemäss dem Oberbegriff des Hauptanspruches. Eine derartige Einrichtung gehört zum Stand der Technik und ist in dem nicht veröffentlichten DE-U-8 302 758 beschrieben.The invention relates to a device for inserting weft threads in weaving machines according to the preamble of the main claim. Such a device belongs to the prior art and is described in the unpublished DE-U-8 302 758.

Ausgehend von der DE-C-2 710 133 wird bei dieser älteren Vorrichtung eine Eintragvorrichtung für Schussfäden geschaffen, bei der nur eine einzige Klemmeinrichtung für die Halterung und Übergabe des Schussfadens zum Schützen erforderlich ist, aber dieser einzigen Klemmvorrichtung eine Vielzahl unterschiedlicher Schussfäden zugeführt werden können.Starting from DE-C-2 710 133, in this older device an insertion device for weft threads is created, in which only a single clamping device is required for holding and transferring the weft thread for protection, but a large number of different weft threads can be fed to this single clamping device .

Aus der DE-B-2 559 967 ist eine Vorrichtung bekannt, bei der von den Vorratsspulen kommende Schussfäden in in dem Bereich der Webkante angeordneten Schussfadenhaltevorrichtungen geführt sind, die einzeln steuerbar aus einer Ruhestellung in eine Übergabestellung führbar sind und dabei den einzubindenden Schussfaden in eine Übergabeposition führen. Aufgabe dieser bekannten Einrichtung ist, eine Webmaschine zu schaffen, bei der der Schussfaden beim Einschlagen des Greiferschützens einer möglichst geringen Spannung unterliegt. Eine Klemmeinrichtung, wie sie in dem DE-U-8 302 758 beschrieben wird, ist in dieser Literaturstelle nicht offenbart.From DE-B-2 559 967 a device is known in which weft threads coming from the supply bobbins are guided in weft holding devices arranged in the area of the selvedge, which can be individually controlled from a rest position to a transfer position and thereby the weft thread to be integrated into one Lead transfer position. The object of this known device is to create a weaving machine in which the weft thread is subject to the lowest possible tension when the rapier guards are driven in. A clamping device as described in DE-U-8 302 758 is not disclosed in this reference.

Der Erfindung liegt nunmehr die Aufgabe zugrunde, die bei der gattungsbildenden Einrichtung noch erforderliche schwenkbare Klemmeinrichtung zu vermeiden, um dadurch zu einer höheren Geschwindigkeit zu kommen, wobei gleichzeitig die bei den bekannten Einrichtungen noch erforderlichen Schneideinrichtungen vermieden werden sollen.The invention is based on the object of avoiding the pivotable clamping device still required in the generic device in order to thereby achieve a higher speed, while at the same time avoiding the cutting devices still required in the known devices.

Diese der Erfindung zugrundeliegende Aufgabe wird durch die Merkmale des kennzeichnenden Teiles des Hauptanspruches gelöst, nämlich dass der den Schussfaden von der Schussfadenhaltevorrichtung dem Greiferschützen übergebende Vorleger als auf- und abbewegliche Führungskörper ausgebildet ist, der in seinem unteren Bereich eine zur Schussfadenhaltevorrichtung hingerichtete Schneide aufweist.This object on which the invention is based is achieved by the features of the characterizing part of the main claim, namely that the runners handing over the weft thread from the weft thread holding device to the rapier shooter is designed as a guide body which can be moved up and down and which in its lower region has a cutting edge which is executed for the weft thread holding device.

Bei der erfindungsgemässen Einrichtung wird also der Schussfaden von dem Vorleger in den Bereich der Greifzange des Greiferschützens geführt und bei Bewegung des Greiferschützens automatisch an der in dem Vorleger eingebauten Schneide abgeschnitten, wobei dann dieses freie Fadenende von der im Bereich der Webkante angeordneten Fangvorrichtung gehalten, das andere Fadenende durch den Greiferschützen durch das Webfach gezogen wird.In the device according to the invention, the weft thread is thus guided into the area of the gripper pliers of the rapier protection and automatically cut off on the cutting edge built into the robe when the gripper protection is moved, this free thread end then being held by the catching device arranged in the area of the selvedge, which other thread end is pulled through the shed by the rapier.

Vorteilhafte Ausgestaltungen der erfindungsgemässen Einrichtung sind in den Unteransprüchen erläutert.Advantageous refinements of the device according to the invention are explained in the subclaims.

Ein Ausführungsbeispiel der Erfindung wird nachfolgend anhand der Zeichnung beschrieben.An embodiment of the invention is described below with reference to the drawing.

Die Zeichnung zeigt dabei schaubildlich den Bereich der Fadenübergabe an einer Webmaschine, wobei der Vorleger in der angehobenen Position steht, die Schussfadenhaltevorrichtung in der abgesenkten Stellung und der Greiferschützen auf dem Rückweg ist.The drawing shows the area of the thread transfer on a weaving machine, with the feeder standing in the raised position, the weft holding device in the lowered position and the looper shooter on the way back.

In der Zeichnung sind mit 1 die eigentlichen Schussfadenhaltevorrichtungen bezeichnet, die aus beispielsweise hydraulisch oder pneumatisch betätigten Zylindern bestehen mit darin führbaren Kolbenstangen 2, die an ihrem unteren Ende eine der Führung des Schussfadens 3 dienende Öse 4 aufweisen.In the drawing, the actual weft holding devices are denoted by 1, which consist, for example, of hydraulically or pneumatically operated cylinders with piston rods 2 which can be guided therein and which have an eyelet 4 at their lower end which serves to guide the weft thread 3.

Bei 5 ist der Schussfadenvorleger erkennbar, der im wesentlichen aus einem seitlich offenen U-förmigen Führungskörper 6 besteht, wobei im unteren Bereich des U-Schenkels eine Schneide 7 angeordnet ist, die in Richtung zur Schussfadenhaltevorrichtung 1 hin angeschliffen ist. Ausserdem ist vor der Schneide 7 ein kleiner Führungsschlitz 8 in dem Schenkel des U-förmigen Führungskörpers vorgesehen, der zur Aufnahme und Führung des Schussfadens dient.At 5, the weft feeder can be seen, which essentially consists of a laterally open U-shaped guide body 6, a cutting edge 7 being arranged in the lower region of the U leg, which is ground in the direction of the weft holding device 1. In addition, a small guide slot 8 is provided in front of the cutting edge 7 in the leg of the U-shaped guide body, which is used to receive and guide the weft thread.

Bei 9 ist das Gewebe erkennbar, bei 10 das offene Fach und bei 11 eine Fadenfangvorrichtung, in der die abgeschnittenen Schussfäden gehalten werden, um ein Auflösen des Gewebes in diesem Bereich zu verhindern.The fabric can be seen at 9, the open compartment at 10 and a thread catcher at 11, in which the cut weft threads are held in order to prevent the fabric from dissolving in this area.

Bei 12 ist der Greiferschützen dargestellt, der in an sich bekannter Weise mit einer Greifzange 14 ausgerüstet ist und in einer Führungsbahn 15 läuft.At 12, the gripper shooter is shown, who is equipped in a manner known per se with a gripper 14 and runs in a guideway 15.

Ein Schussfadenführer 16 besteht ebenfalls aus einem hydraulisch oder pneumatisch betriebenen Zyinder, in dem ein Stössel 17 verschiebbar ist, der an seinem Ende mit einem Querstössel 18 ausgerüstet ist und der in der Lage ist, den Schussfaden aus dem U-förmigen Führungskörper durch dessen offene Seite hinauszudrücken.A weft guide 16 also consists of a hydraulically or pneumatically operated cylinder, in which a plunger 17 is displaceable, which is equipped at its end with a cross plunger 18 and is able to remove the weft thread from the U-shaped guide body through its open side push out.

Ein Fadenabweiser ist bei 19 erkennbar. Die Arbeitsweise der erfindungsgemässen Einrichtung ist wie folgt:

  • Der Greiferschützen 12 wird in Richtung des eingezeichneten Pfeiles F in den Schützenkasten zurückgetrieben. Hierbei hat die Schussfadenhaltevorrichtung 1 eine entsprechend angesteuerte Konbenstange 2 ausgefahren und den Schussfaden 3, der in der Öse 4 gehalten wird, nach unten geführt.
A thread deflector can be seen at 19. The operation of the device according to the invention is as follows:
  • The gripper shooter 12 is driven back into the shooter box in the direction of the arrow F shown. Here, the weft thread holding device 1 has extended a correspondingly controlled rod 2 and has guided the weft thread 3, which is held in the eyelet 4, downward.

Anschliessend wird der Vorleger 5 nach unten geführt und dabei gelangt der Schussfaden 3 in den Schlitz 8 und vor die Schneide 7 des Führungskörpers 6.The feeder 5 is then guided downward and the weft thread 3 enters the slot 8 and in front of the cutting edge 7 of the guide body 6.

Bei einer Bewegung des Schützens entgegengesetzt dem Pfeil F, d.h. also bei der Eintragbewegung des Schützens für den Schussfaden, ergreift der Schützen zuerst mit der Greifzange 14 das in den Weg der Greifzange 14 ragende Teil des Schussfadens 3 (rechts der in der Zeichnung dargestellten Öse). Dabei führt dann anschliessend der Greiferschützen 12 den Schussfaden 3 vor die Schneide 7, so dass nunmehr der Schussfaden 3 durch die Schneide 7 abgeschnitten wird. Das derart zum Gewebe hingerichtete freie Ende des Schussfadens 3 wird in der Fangvorrichtung 11 gehalten, andererseits das von der Greifzange 14 ergriffene Ende des Schussfadens 3 durch das Gewebe hindurchgezogen. Hierbei ist zu beachten, dass die Greifzange 14 beim Flug des Schützens durch den durch das «U» gebildeten freien Raum, also oberhalb des unteren Schenkels des Vorlegers 5, geführt wird.When the shooter moves counter to the arrow F, i.e. So when the shooter moves in for the weft thread, the shooter first grips with the gripping tongs 14 the part of the weft thread 3 protruding into the path of the gripping tongs 14 (to the right of the eye shown in the drawing). Then the gripper shooter 12 then leads the weft thread 3 in front of the cutting edge 7, so that the weft thread 3 is now cut off by the cutting edge 7. The free end of the weft thread 3 which is thus executed for the fabric is held in the catching device 11, and on the other hand the end of the weft thread 3 gripped by the gripping pliers 14 is pulled through the fabric. It should be noted here that the gripping tongs 14 are guided through the free space formed by the “U”, ie above the lower leg of the serving mat 5, during the shooter's flight.

Um eine Aufwärtsbewegung des Vorlegers 5 störungsfrei zu ermöglichen, drückt nunmehr der Querstössel 18 des Stössels 17 durch entsprechende Betätigung des Schussfadenführers 16 den vom Schützen gezogenen Schussfaden 3 aus dem U-förmigen Führungskörper 6 (in der Zeichnung nach hinten durch das freie Teil) heraus, so dass nunmehr der Vorleger 5 wieder in die Hochstellung - wie sie in der Zeichnung dargestellt ist - geführt werden kann.To an upward movement of the rug 5 disturb the cross plunger 18 of the plunger 17 now presses the weft thread 3 drawn by the shooter out of the U-shaped guide body 6 (in the drawing to the rear through the free part) by corresponding actuation of the weft thread guide 16, so that the rag 5 back to the high position - as shown in the drawing - can be performed.

Der Fadenabweiser 19 verhindert, dass die von den Schussfadenhaltevorrichtungen 1 gehaltenen, aber schon im Gewebe eingebundenen Fäden in den Bereich der Bewegung des Führungskörpers 6 bzw. des Vorlegers 5 gelangen können.The thread deflector 19 prevents the threads held by the weft thread holding devices 1, but already integrated in the fabric, from reaching the area of movement of the guide body 6 or of the feeder 5.

Im Gegensatz zu den aus dem Stand der Technik bekannten Einrichtungen ist also sowohl die Schwenkbewegung des sogenannten Vorlegers vermieden, wie auch die zusätzlich erforderliche Bewegung der Schere oder Scheideinrichtung und es ist die hierfür erforderliche taktweise Steuerung dieser Scheideinrichtung umgangen, so dass die neue Einrichtung einfacher, aber gleich wirkungsvoll arbeitet.In contrast to the devices known from the prior art, both the swiveling movement of the so-called mat is avoided, as is the additionally required movement of the scissors or cutting device, and the cycle control of this cutting device required for this is avoided, so that the new device is easier, but works equally effectively.

Claims (8)

1. Weft thread picking device in weaving machines, with supply bobbins arranged in stationary manner and with a gripper shuttle equipped with gripper tongs, two or more mutually independent weft threads which come from the supply bobbins and are tied in the web being guided in weft thread holding devices arranged in the region of the selvedge, these holding devices being guidable in individually controllable manner from a position of rest into a transfer position and guiding the respective weft thread to be tied-in into a transfer position from which it is guidable by means of a presenting element into a transfer position to the gripper shuttle in which latter position it can be gripped by the gripper tongs of the shuttle, characterised in that the presenting element (5) transferring the weft thread (3) from the weft thread holding device (1) to the gripper shuttle (12) is constructed as a guide element (6) which is adapted to be moved upwards and downwards and which in its lower region comprises a cutting edge (7) directed towards the weft thread holding device (1).
2. Device according to claim 1, characterised by a weft thread guide (16) which is constructed to be movable transversely to the direction of travel of the gripper shuttle (12), and whereby the weft thread (3) drawn by the gripper shuttle (12) into the shed (10) is brought out of the region of the guide element (6) of the presenting element (5).
3. Device according to claims 1 and 2, characterised in that the presenting element (5) and the weft thread guide (16) are pneumatically controlled.
4. Device according at least to claims 1 and 2, characterised in that the weft thread guide (16) comprises a push member (17) provided at its free end with a transverse push member (18).
5. Device at least according to claim 1, characterised by a catching device (11) which secures the severed weft threads at the completed selvedge.
6. Device at least according to claim 1, characterised by a thread repeller or guard (19) above the path of travel of the gripper shuttle (12).
7. Device at least according to claim 1, characterised in that the presenting element (5) is constructed as a U-shaped guide element (6) whose two legs are situated horizontally and whose base is situated vertically.
8. Device according to at least claims 1 and 7, characterised in that the cutting edge (7) is provided in the lower horizontally situated leg of the guide element (6), and between the outer edge of the horizontally situated leg and the cutting edge a slit (8) is provided for weft thread guiding purposes.
EP84100096A 1983-04-27 1984-01-07 Weft inserting device for weaving machines Expired EP0123772B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84100096T ATE24212T1 (en) 1983-04-27 1984-01-07 DEVICE FOR INSERTING WEFT THREADS IN LOOPPING MACHINES.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19833315320 DE3315320A1 (en) 1983-04-27 1983-04-27 DEVICE FOR ENTERING Weft Threads In Weaving Machines
DE3315320 1983-04-27

Publications (2)

Publication Number Publication Date
EP0123772A1 EP0123772A1 (en) 1984-11-07
EP0123772B1 true EP0123772B1 (en) 1986-12-10

Family

ID=6197527

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84100096A Expired EP0123772B1 (en) 1983-04-27 1984-01-07 Weft inserting device for weaving machines

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EP (1) EP0123772B1 (en)
AT (1) ATE24212T1 (en)
DE (2) DE3315320A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3618445C1 (en) * 1986-05-31 1987-07-02 Dornier Gmbh Lindauer Device for the supply of weft threads for the weft insertion elements in contactless weaving machines
DE3808777A1 (en) * 1988-03-16 1989-10-05 Wangner Gmbh Co Kg Hermann DEVICE FOR SELECTIVELY FEEDING ONE OF SEVERAL Weft Threads TO A GRIPPER PROJECTILE
IT1248715B (en) * 1990-06-11 1995-01-26 Vamatex Spa WEFT PRESENTATION DEVICE FOR CLAMPS WEAVING FRAMES
DE4325905C1 (en) 1993-08-02 1994-10-06 Dornier Gmbh Lindauer Device for feeding weft threads to a weft-thread insertion member in weaving machines
DE102006034262A1 (en) * 2006-07-18 2008-01-24 Picanol N.V. Device for feeding weft threads for a weaving machine

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1067374B (en) *
US2814315A (en) * 1956-05-08 1957-11-26 Lyle Charles Needle loom
US3276482A (en) * 1963-04-10 1966-10-04 Jean Gusken Maschinenfabrik Ei Web thread changing device for web-loom
FR1489089A (en) * 1966-05-06 1967-07-21 Alsacienne Constr Meca Weft mixing device for looms
GB1401051A (en) * 1971-06-21 1975-07-16 Somet Soc Mec Tessile Cutting device for looms
DE2255918A1 (en) * 1972-11-15 1974-06-12 Lentz Fa S Gripper loom colour selector - provided with weft yarn guide needles in different planes for compact assembly and vibration free yarn feed
DE2509664A1 (en) * 1975-03-06 1976-09-09 Scheibler Peltzer & Co Weft yarn control unit - for weft insertion in looms
CH640016A5 (en) * 1979-10-01 1983-12-15 Saurer Ag Adolph DEVICE FOR DELIVERING A WIFE TO A CONTINUOUS WEAVING MACHINE.

Also Published As

Publication number Publication date
EP0123772A1 (en) 1984-11-07
DE3315320A1 (en) 1984-10-31
ATE24212T1 (en) 1986-12-15
DE3461657D1 (en) 1987-01-22

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