EP0839219A1 - Device for producing a leno selvedge, in particular for shuttleless looms - Google Patents

Device for producing a leno selvedge, in particular for shuttleless looms

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Publication number
EP0839219A1
EP0839219A1 EP96919555A EP96919555A EP0839219A1 EP 0839219 A1 EP0839219 A1 EP 0839219A1 EP 96919555 A EP96919555 A EP 96919555A EP 96919555 A EP96919555 A EP 96919555A EP 0839219 A1 EP0839219 A1 EP 0839219A1
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EP
European Patent Office
Prior art keywords
arms
leno
rotary body
threads
rotor
Prior art date
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Granted
Application number
EP96919555A
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German (de)
French (fr)
Other versions
EP0839219B1 (en
Inventor
Kurt Hockemeyer
Matthias Klöcker
Christoph Schwemmlein
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.)
Gebrueder Kloecker GmbH
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Kloecker Entwicklungs GmbH
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Publication date
Application filed by Kloecker Entwicklungs GmbH filed Critical Kloecker Entwicklungs GmbH
Priority to SI9630082T priority Critical patent/SI0839219T1/en
Publication of EP0839219A1 publication Critical patent/EP0839219A1/en
Application granted granted Critical
Publication of EP0839219B1 publication Critical patent/EP0839219B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C7/00—Leno or similar shedding mechanisms
    • D03C7/04—Mechanisms having discs oscillating about a weftwise axis and having apertures for warp threads

Definitions

  • the invention relates to a device for forming a leno edge, in particular for defenseless weaving machines, comprising a drivable rotational body, the rotational body having at least two guide elements for the leno threads spaced apart from one another.
  • a device of the type mentioned is known from DE-PS 44 05 776.
  • an electrically controllable servomotor is provided which drives a rotating disk, the rotating disk forming the rotor of the electrically controllable servomotor.
  • the stator itself can be attached to the weaving machine by means of a carrier part, and preferably in a space between the longitudinal struts and strands in front of the first weaving shafts of the weaving machine.
  • the rotating disk which forms the rotor of the electrically controllable servo motor, has two openings arranged opposite one another for guiding one leno thread as guide elements.
  • This known rotary edge turner of a weaving machine now works in such a way that it makes a few hundred revolutions in one direction and thereby binds a weft thread after each revolution. This creates a full-turn edge.
  • these leno threads twist in accordance with the number of revolutions of the turntable, so that in order to cancel this twist, a reversal of the direction of rotation is indicated, so the turntable must therefore rotate in exactly the opposite direction.
  • the number of revolutions in each direction must be the same on average over time. If the direction of rotation were not reversed, the leno threads would break at some point due to the increasing tension due to the increasing twist.
  • the invention is therefore based on the object of providing a device of the type mentioned at the outset with which it is possible to produce a proper full-turn edge even in the case of snow-weaving looms.
  • the guide elements are designed as arms which have eyelets at the end for carrying the leno threads.
  • the arms themselves can easily be formed, since they are hardly used. They therefore represent a comparatively negligible mass.
  • the size of the rotor is then independent of the desired opening angle of the Subject. This means that a small motor with a correspondingly smaller rotor can be selected, which then also has a correspondingly low mass, since due to the arrangement of the arms arranged on the rotor, the designer is now free to choose the size and the design, except for the performance requirements Diameter of the motor is. Motors with a small diameter and with correspondingly small moving masses can therefore also be used without the risk that no proper compartment opening can be provided. Because the length of the arms, which are arranged on the rotating body, the distance between the eyes in the arms and thus the size of the compartment opening can be chosen essentially freely.
  • the rotary body and here in particular the rotor, has a bore in the region of its axis of rotation for the implementation of the leno threads.
  • the leno threads can be passed through a hole arranged centrally in the rotating body, which improves the thread guidance, in particular with regard to a possible twisting in the area of the latter
  • the arms are arranged on the end of the rotary body facing the tissue; each arm is advantageously hook-shaped at the end, the eyelet for guiding the leno thread being provided in the region of the hook-shaped bend.
  • the eyelet can have inserts to reduce the wear of the eyelet by guiding the leno thread;
  • sleeve-shaped inserts made of ceramic materials are conceivable.
  • the rotary body is arranged on the weaving machine in such a way that the axis of rotation either runs parallel or at an angle of up to 90 ° to the warp threads. Especially with one Angular position of almost 90 °, the device is optimally brought directly to the fabric edge, so that a leno edge can also be arranged directly at the end of the fabric.
  • Fig. 1 shows schematically the almost right-angled arrangement of the device according to the invention for tissue, the shafts and the reed are omitted for clarity;
  • Fig. 2 shows the device schematically in one position, the axis of rotation of the rotary body running parallel to the warp threads;
  • Fig. 3 shows a position of the rotary body at an angle of about 45 ° to the warp threads
  • Fig. 4 shows the binding scheme of a full-turn edge.
  • a motor designated overall with 10 which has a central bore 11 for carrying out the leno threads 20, 30.
  • the axis of rotation extends transversely to the warp threads 40, that is to say essentially parallel to the weft threads 50.
  • two pairs of arms 60, 70 are provided.
  • Each pair of arms 60, 70 consists of two arms 61, 62 and 71, 72, respectively.
  • the two pairs of arms 60, 70 run parallel to one another and are fastened to the respective front end of the rotating body 10, as can be clearly seen from FIG.
  • the arms 61, 62 and 71, 71 are hook-shaped at the end and have the eyelets 73, 74 and 63, 64 in the region of the hook-shaped bend. These eyelets serve to pass the leno threads 20, 30, which are drawn off from the bobbins 80, 90.
  • the operation of the device is such that, for example, a rotor designed as a rotor of a motor, the rotor is driven so that its rotation is synchronized with the shaft movement, so that there is a necessary opening for the weft thread insertion and in connection with the twist an edge binding results.
  • a corresponding phase offset in the Synchronization between the rotational movement of the rotating body and the shaft movement also allows premature setting. This means that such a device works independently of the shaft, in contrast to edging devices which are arranged on the heald frames.
  • the edge can be arranged substantially closer to the tissue when the device according to FIG. 3 is in position.
  • the device has a position of approximately 45 ° to the tissue.
  • a thread guide 120 in the form of a roll or roller is provided in order to be able to guide the threads to the fabric in such a way that a proper compartment opening can be produced.
  • the weave that can be produced with such a device presents itself as a so-called full-twist weave, which means that every weft thread is completely bound by the weave.
  • Such a fabric edge is extremely stable despite only three threads and, due to the use of only three threads, has a small thickness, so that the fabric does not appear on the tree in the edge region and therefore does not run.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Treatment Of Fiber Materials (AREA)

Abstract

PCT No. PCT/DE96/01908 Sec. 371 Date Jun. 5, 1998 Sec. 102(e) Date Jun. 5, 1998 PCT Filed Oct. 3, 1996 PCT Pub. No. WO97/24480 PCT Pub. Date Jul. 10, 1997Device for producing a leno selvedge, in particular for a loom, including an electromotor with a rotor, whereas the rotor has at least two spaced guide elements for the leno threads, whereas the guide elements are designed as being elastic and flexible so that they can compensate fluctuations in thread tension in direction of the electromotor's, axis.

Description

B e s c h r e i b u n g Description
Vorrichtung zum Bilden einer Dreherkante, insbesondere für schützenlose Webmaschinen.Device for forming a leno edge, in particular for weaver machines without protection.
Die Erfindung betrifft eine Vorrichtung zum Bilden einer Dreherkante, insbesondere für schützenlose Webmaschinen, umfassend einen antreibbaren Rotationskörper, wobei der Rotationskörper beabstandet zueinander mindestens zwei Führungselemente für die Dreherfäden aufweist.The invention relates to a device for forming a leno edge, in particular for defenseless weaving machines, comprising a drivable rotational body, the rotational body having at least two guide elements for the leno threads spaced apart from one another.
Eine Vorrichtung der eingangs genannten Art ist aus der DE-PS 44 05 776 bekannt. Hierbei ist ein elektrisch ansteuerbarer Stellmotor vorgesehen, der eine Dreherscheibe antreibt, wobei die Dreherscheibe den Läufer des elektrisch ansteuerbaren Stellmotors bildet. Der Stator selbst ist durch ein Trägerteil an der Webmaschine anbringbar, und zwar vorzugsweise in einem zwischen den Längsstreben und Litzen liegenden Freiraum vor den ersten Webschäften der Webmaschine. Im einzelnen ist hierbei vorgesehen, daß die Dreherscheibe, die den Läufer des elektrisch ansteuerbaren Stellmotors bildet, als Führungselemente zwei einander gegenüberliegend angeordnete Offnungen zum Durchführen jeweils eines Dreherfadens aufweist. Dieser bekannte Rotations-Kantendreher einer Webmaschine arbeitet nun derart, daß er einige hundert Umdrehungen in einer Richtung durchführt und hierbei nach jeweils einer Umdrehung einen Schußfaden abbindet. Es entsteht somit eine Volldreherkante. Auf der Seite der Zuführung der beiden Dreherfäden verdrillen sich diese Dreherfäden entsprechend der Anzahl der Umdrehungen der Drehscheibe, so daß, um diese Verdrillung aufzuheben, eine Drehrichtungsumkehr angezeigt ist, mithin also die Dreherscheibe in genau die entgegengesetzte Richtung rotieren muß. Die Anzahl der Umdrehungen in jeder Richtung muß hierbei im zeitlichen Mittel gleich sein. Würde keine Drehrichtungsumkehr vorgenommen werden, so würden die Dreherfäden aufgrund der ansteigenden Spannung wegen der zunehmenden Verdrillung irgendwann reißen. Bei den bekannten schnellaufenden Webmaschinen von bis zu 1200 Schuß pro Minute wurde ermittelt, daß nach einer Größenordnung von etwa 100 bis 1000 Umdrehungen in einer Richtung eine Drehrichtungsumkehr erfolgen sollte. Das heißt, daß nach dem Stand der Technik alle 10 bis 100 Sekunden der Läufer und damit die Dreherscheibe des elektrisch ansteuerbaren Stellmotors umgesteuert werden muß. Aufgrund der Hubzahl einer Webmaschine stehen hierfür maximal 100 Millisekunden (msec) zur Verfügung. Das heißt, daß innerhalb von 100 msec der Läufer des Motors stillstehen muß und wieder in voller Geschwindigkeit in die entgegengesetzten Drehrichtung rotieren muß. Dies ist aufgrund der hohen Masse der Dreherscheibe bzw. des Läufers mit bekannten Motoren nur mit hohem Aufwand zu bewerkstelligen. Hierbei könnte man natürlich auf den Gedanken kommen, die bewegte Masse des Motors dadurch zu reduzieren, daß der Motor insgesamt kleiner gewählt wird. Es besteht dann allerdings die Gefahr, daß bei einem geringeren Durchmesser des Läufers und damit der Dreherscheibe eine nur unzureichende Fachbildung zwischen den beiden durch die Dreherscheibe geführten Dreherfäden erfolgt mit dem Nachteil, daß der Schußfaden nicht sauber eingeführt werden kann. Zudem können die Fäden noch aneinander haften und mithin ist keine saubere Kante herstellbar.A device of the type mentioned is known from DE-PS 44 05 776. In this case, an electrically controllable servomotor is provided which drives a rotating disk, the rotating disk forming the rotor of the electrically controllable servomotor. The stator itself can be attached to the weaving machine by means of a carrier part, and preferably in a space between the longitudinal struts and strands in front of the first weaving shafts of the weaving machine. In particular, it is provided that the rotating disk, which forms the rotor of the electrically controllable servo motor, has two openings arranged opposite one another for guiding one leno thread as guide elements. This known rotary edge turner of a weaving machine now works in such a way that it makes a few hundred revolutions in one direction and thereby binds a weft thread after each revolution. This creates a full-turn edge. On the side of the feed of the two leno threads, these leno threads twist in accordance with the number of revolutions of the turntable, so that in order to cancel this twist, a reversal of the direction of rotation is indicated, so the turntable must therefore rotate in exactly the opposite direction. The number of revolutions in each direction must be the same on average over time. If the direction of rotation were not reversed, the leno threads would break at some point due to the increasing tension due to the increasing twist. In the known high-speed weaving machines of up to 1200 wefts per minute, it was determined that after an order of magnitude of approximately 100 to 1000 revolutions, the direction of rotation should be reversed. This means that, according to the state of the art, the rotor and thus the rotating disk of the electrically controllable servomotor must be reversed every 10 to 100 seconds. Due to the number of strokes of a weaving machine, a maximum of 100 milliseconds (msec) are available for this. This means that the rotor of the motor must stand still within 100 msec and rotate again at full speed in the opposite direction of rotation. Due to the high mass of the rotating disk or the rotor, this can only be accomplished with great effort using known motors. Of course, one could think of reducing the moving mass of the motor by choosing a smaller motor overall. However, there is then the danger that, with a smaller diameter of the rotor and thus the rotating disc, insufficient shed formation will take place between the two leno threads passed through the rotating disc, with the disadvantage that the weft thread cannot be inserted properly. In addition, the threads can still adhere to one another and therefore a clean edge cannot be produced.
Der Erfindung liegt daher die Aufgabe zugrunde, eine Vorrichtung der eingangs genannten Art bereitzustellen, mit der es möglich iεt, auch bei schneilaufenden Webmaschinen eine ordnungsgemäße Volldreherkante herzustellen.The invention is therefore based on the object of providing a device of the type mentioned at the outset with which it is possible to produce a proper full-turn edge even in the case of snow-weaving looms.
Die Aufgabe wird erfindungsgemäß dadurch gelöst, daß die Führungselemente als Arme ausgebildet sind, die endseitig Ösen zur Durchführung der Dreherfäden aufweisen. Die Arme selbst können durchaus leicht gebildet werden, da sie im wesentlichen kaum beansprucht werden. Sie stellen somit eine vergleichsweise vernachlässigbare Masse dar. Insbesondere bei der Verwendung eines Elektromotors ist dann die Größe des Rotors unabhängig von dem gewünschten Offnungswinkel des Fachs. Das heißt, es kann ein kleiner Motor mit entsprechend kleinerem Rotor gewählt werden, der dann auch eine entsprechend geringe Masse besitzt, da aufgrund der Anordnung der am Rotor angeordneten Arme der Konstrukteur nunmehr, bis auf die Leistungsanforderungen, frei in der Wahl der Größe und des Durchmessers des Motors ist. Es können deshalb auch Motoren mit geringem Durchmesser und mit entsprechend geringen bewegten Massen zum Einsatz kommen, ohne daß die Gefahr besteht, daß keine ordnungsmäße Fachöffnung bereitgestellt werden kann. Denn durch die Länge der Arme, die an dem Rotationskörper angeordnet sind, kann der Abstand der Ösen in den Armen und damit die Größe der Fachöffnung im wesentlichen frei gewählt werden.The object is achieved in that the guide elements are designed as arms which have eyelets at the end for carrying the leno threads. The arms themselves can easily be formed, since they are hardly used. They therefore represent a comparatively negligible mass. In particular when using an electric motor, the size of the rotor is then independent of the desired opening angle of the Subject. This means that a small motor with a correspondingly smaller rotor can be selected, which then also has a correspondingly low mass, since due to the arrangement of the arms arranged on the rotor, the designer is now free to choose the size and the design, except for the performance requirements Diameter of the motor is. Motors with a small diameter and with correspondingly small moving masses can therefore also be used without the risk that no proper compartment opening can be provided. Because the length of the arms, which are arranged on the rotating body, the distance between the eyes in the arms and thus the size of the compartment opening can be chosen essentially freely.
Nach einem vorteilhaften Merkmal der Erfindung weist der Rotationskörper, und hier insbesondere der Rotor im Bereich seiner Rotationsachse eine Bohrung zur Durchführung der Dreherfäden auf. Das heißt, daß die Dreherfäden durch eine zentrisch im Rotationskörper angeordnete Bohrung durch diesen hindurchführbar sind, was die Fadenführung, insbesondere im Hinblick auf eine mögliche Verdrillung im Bereich dieserAccording to an advantageous feature of the invention, the rotary body, and here in particular the rotor, has a bore in the region of its axis of rotation for the implementation of the leno threads. This means that the leno threads can be passed through a hole arranged centrally in the rotating body, which improves the thread guidance, in particular with regard to a possible twisting in the area of the latter
Bohrung des Rotationskörpers, verbessert.Bore of the rotating body, improved.
Im einzelnen ist vorgesehen, daß die Arme am auf das Gewebe zugerichteten, stirnseitigen Ende des Rotaionskörpers angeordnet sind; hierbei ist jeder Arm vorteilhaft endseitig hakenförmig ausgebildet, wobei im Bereich der hakenförmigen Biegung die Öse zur Führung des Dreherfadens vorgesehen ist. Die Ose kann Einsätze aufweisen, um den Verschleiß der Öse durch die Führung des Dreherfadens zu vermindern; denkbar sind insbesondere hülsenförmige Einsätze aus keramischen Werkstoffen.In particular, it is provided that the arms are arranged on the end of the rotary body facing the tissue; each arm is advantageously hook-shaped at the end, the eyelet for guiding the leno thread being provided in the region of the hook-shaped bend. The eyelet can have inserts to reduce the wear of the eyelet by guiding the leno thread; In particular, sleeve-shaped inserts made of ceramic materials are conceivable.
Nach einem weiteren Merkmal der Erfindung ist der Rotationskörper derart an der Webmaschine angeordnet, daß die Rotationsachse entweder parallel oder in einem Winkel von bis zu 90° zu den Kettfäden verläuft. Insbesondere bei einer Winkelstellung von fast 90° wird die Vorrichtung in optimaler Weise unmittelbar an die Gewebekante gebracht, so daß eine Dreherkante auch unmittelbar am Gewebeende angeordnet werden kann. Hierbei kann es nach einem weiteren Merkmal der Erfindung erforderlich sein, parallel zu den am auf das Gewebe zugerichteten stirnseitigen Ende angeordneten Arme, am gegenüberliegenden stirnseitigen Ende des Rotationskörper entsprechend angeordnete weitere Arme vorzusehen. Diese weiteren Arme können deswegen erforderlich sein, um eine ordnungsgemäße Verdrillung der Dreherfäden im Bereich der Zuführung der Dreherfäden von den Spulen zu gewährleisten. Dies deshalb, damit die Verdrillung der Dreherfäden im Zuführungsbereich der Fäden von den Spulen, mit Drehrichtungsumkehr des Rotationskörpers in gleicher Weise entdrillt werden können, wie sie verdrillt wurden. Diese Problematik tritt in dieser Form nicht auf, wenn der Rotationskörper mit seiner Rotationsachse parallel zu den Kettfäden der Webmaschine angeordnet ist.According to a further feature of the invention, the rotary body is arranged on the weaving machine in such a way that the axis of rotation either runs parallel or at an angle of up to 90 ° to the warp threads. Especially with one Angular position of almost 90 °, the device is optimally brought directly to the fabric edge, so that a leno edge can also be arranged directly at the end of the fabric. According to a further feature of the invention, it may be necessary to provide further arms which are arranged parallel to the arms arranged on the end facing the tissue and correspondingly arranged on the opposite end of the rotating body. These additional arms may therefore be necessary to ensure proper twisting of the leno threads in the area where the leno threads are fed from the bobbins. This is so that the twisting of the leno threads in the feed area of the threads from the bobbins can be untwisted in the same way as they were twisted when the direction of rotation of the rotating body is reversed. This problem does not arise in this form if the rotary body is arranged with its axis of rotation parallel to the warp threads of the weaving machine.
Anhand der Zeichnung wird die Erfindung beispielhaft näher erläutert.The invention is explained in more detail by way of example with reference to the drawing.
Fig. 1 zeigt schematisch die nahezu rechtwinklige Anordnung der erfindungsgemäßen Vorrichtung zum Gewebe, wobei die Schäfte und das Riet wegen der besseren Übersicht weggelassen sind;Fig. 1 shows schematically the almost right-angled arrangement of the device according to the invention for tissue, the shafts and the reed are omitted for clarity;
Fig. 2 zeigt die Vorrichtung schematisch in einer Stellung, wobei die Rotationsachse des Rotationskörpers parallel zu den Kettfäden verläuft;Fig. 2 shows the device schematically in one position, the axis of rotation of the rotary body running parallel to the warp threads;
Fig. 3 zeigt eine Stellung des Rotationskörper in einem Winkel von etwa 45° zu den Kettfäden;Fig. 3 shows a position of the rotary body at an angle of about 45 ° to the warp threads;
Fig. 4 zeigt das Bindeschema einer Volldreherkante.Fig. 4 shows the binding scheme of a full-turn edge.
Bei der in den Figuren 1 bis 3 dargestellten Vorrichtung 1 ist ein insgesamt mit 10 bezeichneter Motor vorgesehen, der zur Durchführung der Dreherfäden 20, 30 eine zentrische Bohrung 11 besitzt. Bei der in Figur 1 dargestellten Ausführungsform, bei der die Rotationsachse quer zu den Kettfäden 40, das heißt im wesentlichen parallel zu den Schußfäden 50 verläuft, sind zwei Armpaare 60, 70 vorgesehen. Jedes Armpaar 60, 70 besteht aus zwei Armen 61, 62 bzw. 71, 72. Die beiden Armpaare 60, 70 verlaufen parallel zueinander und sind am jeweils stirnseitigen Ende des Rotationskörper 10 befestigt, wie sich dies aus Figur 1 deutlich erkennen läßt. Die Arme 61, 62 bzw. 71, 71 sind endseitig hakenförmig gebogen ausgebildet und weisen im Bereich der hakenförmigen Biegung die Ösen 73, 74 bzw. 63, 64 auf. Diese Ösen dienen der Durchführung der Dreherfäden 20, 30, die von den Garnspulen 80, 90 abgezogen werden.In the device 1 shown in Figures 1 to 3 a motor designated overall with 10 is provided, which has a central bore 11 for carrying out the leno threads 20, 30. In the embodiment shown in FIG. 1, in which the axis of rotation extends transversely to the warp threads 40, that is to say essentially parallel to the weft threads 50, two pairs of arms 60, 70 are provided. Each pair of arms 60, 70 consists of two arms 61, 62 and 71, 72, respectively. The two pairs of arms 60, 70 run parallel to one another and are fastened to the respective front end of the rotating body 10, as can be clearly seen from FIG. The arms 61, 62 and 71, 71 are hook-shaped at the end and have the eyelets 73, 74 and 63, 64 in the region of the hook-shaped bend. These eyelets serve to pass the leno threads 20, 30, which are drawn off from the bobbins 80, 90.
Bei Rotation der Armpaare 60, 70 entsteht im Bereich des Gewebes die Volldreherkante 100 (Fig.4). Im Bereich der Zuführung der Dreherfäden 20, 30 von den Garnspulen 80, 90When the arm pairs 60, 70 rotate, the full-turn edge 100 is formed in the region of the tissue (FIG. 4). In the area where the leno threads 20, 30 are fed from the yarn packages 80, 90
erfolgt ebenfalls eine Verdrillung der Fäden (bei 110), die dadurch wieder aufgehoben wird, daß die Drehrichtung des Rotationskörpers nach einer bestimmten Anzahl Umdrehungen in einer Richtung umgekehrt wird. Eine Entdrillung der Dreherkante 100 wird hierbei dadurch vermieden, daß zwischen den Dreherfäden die Schußfäden 50 einliegen. Das heißt, daß auch bei der Entdrillung der Verdrillungen 110 auf der anderen Seite im Bereich des Gewebes eine weitere Gewebekante durch Verdrillung mit den entsprechenden Schußfäden entsteht.there is also a twisting of the threads (at 110), which is canceled again by reversing the direction of rotation of the rotating body in one direction after a certain number of revolutions. Untwisting of the leno selvedge 100 is avoided in that the weft threads 50 lie between the leno threads. This means that even when the twists 110 are untwisted on the other side in the area of the fabric, another fabric edge is created by twisting with the corresponding weft threads.
Die Arbeitsweise der Vorrichtung ist nun derart, daß bei beispielsweise einem als Rotor eines Motors ausgebildeten Rotationskörpers der Rotor so angetrieben wird, daß seine Drehung mit der Schaftbewegung synchronisiert ist, so daß sich die erforderliche Fachöffnung für den Schußfadeneintrag und in Verbindung mit der Verdrehung eine Kantenabbindung ergibt. Wahlweise kann durch einen entsprechenden Phasenversatz in der Synchronisation zwischen der Drehbewegung des Rotationskörpers und der Schaftbewegung auch eine vorzeitige Abbindung erreicht werden. Das heißt eine derartige Vorrichtung arbeitet schaftunabhängig, im Gegensatz zu Kantenapparaten, die an den Webschäften eingeordnet sind.The operation of the device is such that, for example, a rotor designed as a rotor of a motor, the rotor is driven so that its rotation is synchronized with the shaft movement, so that there is a necessary opening for the weft thread insertion and in connection with the twist an edge binding results. Optionally, a corresponding phase offset in the Synchronization between the rotational movement of the rotating body and the shaft movement also allows premature setting. This means that such a device works independently of the shaft, in contrast to edging devices which are arranged on the heald frames.
Bei der in Figur 2 dargestellten parallel verlaufenden Anordnung der Rotationsachse zu den Kettfäden 40, bei der die Schäfte mit 130 und das Riet mit 140 bezeichnet sind, gibt es naturgemäß nur geringe Probleme bei der Zuführung der Dreherfäden 20, 30 zu der Vorrichtung. Allerdings ist bei der in Figur 2 dargestellten Stellung des Rotationskörpers zum Gewebe ein relativ großer Abstand zum Gewebe vorhanden, so daß die Dreherkante nicht unmittelbar am Gewebe angeordnet werden kann.In the arrangement of the axis of rotation parallel to the warp threads 40 shown in FIG. 2, in which the shafts are denoted by 130 and the reed by 140, there are naturally only minor problems in feeding the leno threads 20, 30 to the device. However, in the position of the rotary body to the tissue shown in FIG. 2, there is a relatively large distance from the tissue, so that the leno edge cannot be arranged directly on the tissue.
Wesentlich näher am Gewebe kann die Kante bei der Stellung der Vorrichtung gemäß Figur 3 angeordnet werden. Hier nämlich hat die Vorrichtung eine Stellung von etwa 45° zum Gewebe.The edge can be arranged substantially closer to the tissue when the device according to FIG. 3 is in position. Here the device has a position of approximately 45 ° to the tissue.
Allerdings ist hierbei eine Fadenführung 120 in Form einer Rolle oder Walze vorgesehen, um die Fäden derart zum Gewebe führen zu können, daß eine ordnungsgemäße Fachöffnung erzeugbar ist.However, a thread guide 120 in the form of a roll or roller is provided in order to be able to guide the threads to the fabric in such a way that a proper compartment opening can be produced.
Die Bindung, die mit einer derartigen Vorrichtung herstellbar ist (Figur 4), stellt sich als sogenannte Volldreherbindung dar, das heißt, es wird durch die Bindung jeder Schußfaden vollständig abgebunden. Eine derartige Gewebekante ist trotz nur dreier Fäden äußerst stabil und weist eben aufgrund der Verwendung von nur drei Fäden eine geringe Dicke auf, so daß das Gewebe auf dem Baum im Randbereich nicht aufträgt, und somit auch nicht verläuft. The weave that can be produced with such a device (FIG. 4) presents itself as a so-called full-twist weave, which means that every weft thread is completely bound by the weave. Such a fabric edge is extremely stable despite only three threads and, due to the use of only three threads, has a small thickness, so that the fabric does not appear on the tree in the edge region and therefore does not run.

Claims

A n s p r ü c h e: Expectations:
1. Vorrichtung zum Bilden einer Dreherkante, insbesondere für eine Webmaschine, umfassend einen antreibbaren Rotationskörper, wobei der Rotationskörper beabstandet zueinander mindestens zwei Führungselemente für die Dreherfäden aufweist, d a d u r c h g e k e n n z e i c h n e t, daß die Führungselemente als Arme (61, 62; 71, 72) ausgebildet sind, die endseitig Ösen (63, 64; 73, 74) zur Durchführung der Dreherfäden (20, 30) aufweisen.1. Device for forming a leno edge, in particular for a weaving machine, comprising a drivable rotary body, the rotary body having at least two guide elements for the leno threads spaced apart from one another, characterized in that the guide elements are designed as arms (61, 62; 71, 72), which have eyelets (63, 64; 73, 74) at the ends for passing the leno threads (20, 30).
2. Vorrichtung nach Anspruch 1, d a d u r c h g e k e n n z e i c h n e t, daß der Rotationskörper (10) im Bereich seiner Drehachse eine Bohrung (11) zur Durchführung der Dreherfäden (20, 30) aufweist.2. Device according to claim 1, so that the rotary body (10) has a bore (11) in the region of its axis of rotation for the implementation of the leno threads (20, 30).
3. Vorrichtung nach Anspruch 1, d a d u r c h g e k e n n z e i c h n e t, daß der Arm (61, 62; 71, 72) endseitig hakenförmig gebogen ausgebildet ist, wobei im Bereich der hakenförmigen Biegung die Öse (63, 64; 73, 74) vorgesehen ist.3. Apparatus according to claim 1, so that the arm (61, 62; 71, 72) is hook-shaped at the end, the eyelet (63, 64; 73, 74) being provided in the region of the hook-shaped bend.
4. Vorrichtung nach Anspruch 1, d a d u r c h g e k e n n z e i c h n e t, daß die Arme (61, 62; 71, 72) am auf das Gewebe zugerichteten, stirnseitigen Ende des Rotationskörpers (10) angeordnet sind.4. The device according to claim 1, d a d u r c h g e k e n n z e i c h n e t that the arms (61, 62; 71, 72) are arranged on the tissue-facing, end face of the rotary body (10).
5. Vorrichtung nach Anspruch 4, d a d u r c h g e k e n n z e i c h n e t, daß parallel zu den am auf das Gewebe zugerichteten, stirnseitigen Ende angeordneten Arme (61, 62) am gegenüberliegenden stirnseitigen Ende weitere Arme (71, 72) vorgesehen sind. 5. Apparatus according to claim 4, characterized in that further arms (71, 72) are provided in parallel to the arms (61, 62) arranged on the fabric facing the front end.
6. Vorrichtung nach einem oder mehreren der voranstehenden Ansprüche, d a d u r c h ge k en n z e i c h n e t, daß der Rotationskörper (10) derart an der Webmaschine angeordnet ist, daß die Rotationsachse parallel oder in einem von Winkel bis zu 90° zu den Kettfäden (40) verläuft.6. The device according to one or more of the preceding claims, characterized in that the rotary body (10) is arranged on the loom in such a way that the axis of rotation runs parallel or at an angle of up to 90 ° to the warp threads (40) .
7. Vorrichtung nach einem oder mehreren der voranstehenden Ansprüche, d a d u r c h g e k e n n z e i c h n e t, daß die Arme (61, 62; 71, 72) radial verstellbar an dem Rotationskörper (10) anbringbar sind.7. The device according to one or more of the preceding claims, that the arms (61, 62; 71, 72) can be attached to the rotary body (10) in a radially adjustable manner.
8. Vorrichtung nach einem oder mehreren der voranstehenden Ansprüche, d a d u r c h g e k e n n z e i c h n e t, daß die Armlänge der Arme (61, 62; 71, 72) veränderbar ist.8. The device according to one or more of the preceding claims, that the arm length of the arms (61, 62; 71, 72) can be changed.
9. Vorrichtung nach einem oder mehreren der voranstehenden Ansprüche, d a d u r c h g e k e n n z e i c h n e t, daß der Rotationskörper (10) der Rotor eines Elektromotors ist.9. The device as claimed in one or more of the preceding claims, that the rotary body (10) is the rotor of an electric motor.
10. Vorrichtung nach Anspruch 9, d a d u r c h g e k e n n z e i c h n e t, daß der Rotor eine zentrische Bohrung (11) zur Durchführung der Dreherfäden (20, 30) aufweist. 10. The apparatus of claim 9, d a d u r c h g e k e n n z e i c h n e t that the rotor has a central bore (11) for performing the leno threads (20, 30).
EP96919555A 1995-12-28 1996-05-21 Device for producing a leno selvedge, in particular for shuttleless looms Expired - Lifetime EP0839219B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI9630082T SI0839219T1 (en) 1995-12-28 1996-05-21 Device for producing a leno selvedge, in particular for shuttleless looms

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19548955 1995-12-28
DE19548955A DE19548955C1 (en) 1995-12-28 1995-12-28 Appts. to form a leno selvedge at shuttleless loom
PCT/DE1996/000882 WO1997024479A1 (en) 1995-12-28 1996-05-21 Device for producing a leno selvedge, in particular for shuttleless looms

Publications (2)

Publication Number Publication Date
EP0839219A1 true EP0839219A1 (en) 1998-05-06
EP0839219B1 EP0839219B1 (en) 1999-06-16

Family

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Family Applications (2)

Application Number Title Priority Date Filing Date
EP96919555A Expired - Lifetime EP0839219B1 (en) 1995-12-28 1996-05-21 Device for producing a leno selvedge, in particular for shuttleless looms
EP96945811A Expired - Lifetime EP0873439B1 (en) 1995-12-28 1996-10-03 Device for producing a leno selvedge, in particular for shuttleless looms

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP96945811A Expired - Lifetime EP0873439B1 (en) 1995-12-28 1996-10-03 Device for producing a leno selvedge, in particular for shuttleless looms

Country Status (12)

Country Link
US (2) US5996646A (en)
EP (2) EP0839219B1 (en)
JP (2) JP3278811B2 (en)
CN (2) CN1046973C (en)
AT (2) ATE181378T1 (en)
CZ (2) CZ285536B6 (en)
DE (2) DE19548955C1 (en)
ES (2) ES2133969T3 (en)
GR (2) GR3030784T3 (en)
HK (1) HK1017911A1 (en)
SI (1) SI0839219T1 (en)
WO (2) WO1997024479A1 (en)

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EP3197029B1 (en) 2016-01-19 2019-05-29 Gebrüder Klöcker GmbH Device using an electric motor for forming a leno selvedge, in particular for a loom, and projectile weaving loom equipped with said device
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Also Published As

Publication number Publication date
DE59602575D1 (en) 1999-09-02
JPH11501999A (en) 1999-02-16
CZ44598A3 (en) 1998-05-13
EP0873439A1 (en) 1998-10-28
ES2133969T3 (en) 1999-09-16
CN1058306C (en) 2000-11-08
SI0839219T1 (en) 1999-10-31
WO1997024480A1 (en) 1997-07-10
CN1046973C (en) 1999-12-01
EP0873439B1 (en) 1999-07-28
CN1206440A (en) 1999-01-27
CN1189197A (en) 1998-07-29
ATE181378T1 (en) 1999-07-15
JP3278811B2 (en) 2002-04-30
ATE182637T1 (en) 1999-08-15
US6098669A (en) 2000-08-08
EP0839219B1 (en) 1999-06-16
GR3030784T3 (en) 1999-11-30
CZ285536B6 (en) 1999-08-11
US5996646A (en) 1999-12-07
GR3031444T3 (en) 2000-01-31
DE19548955C1 (en) 1996-09-12
JP3248078B2 (en) 2002-01-21
CZ286439B6 (en) 2000-04-12
CZ202798A3 (en) 1999-01-13
HK1017911A1 (en) 1999-12-03
JPH11502905A (en) 1999-03-09
WO1997024479A1 (en) 1997-07-10
ES2135266T3 (en) 1999-10-16

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