EP0586959B1 - Support for the reed of a seam weaving machine - Google Patents

Support for the reed of a seam weaving machine Download PDF

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Publication number
EP0586959B1
EP0586959B1 EP93113462A EP93113462A EP0586959B1 EP 0586959 B1 EP0586959 B1 EP 0586959B1 EP 93113462 A EP93113462 A EP 93113462A EP 93113462 A EP93113462 A EP 93113462A EP 0586959 B1 EP0586959 B1 EP 0586959B1
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EP
European Patent Office
Prior art keywords
seam
reed
weaving machine
auxiliary weft
weft thread
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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EP93113462A
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German (de)
French (fr)
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EP0586959A1 (en
Inventor
Hans Eugen Häcker
Edgar Hofstetter
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Novatech GmbH Siebe und Technologie fuer Papier
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Novatech GmbH Siebe und Technologie fuer Papier
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Publication of EP0586959A1 publication Critical patent/EP0586959A1/en
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    • DTEXTILES; PAPER
    • D03WEAVING
    • D03DWOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D49/00Details or constructional features not specially adapted for looms of a particular type
    • D03D49/68Reeds or beat-up combs not mounted on the slay

Definitions

  • the invention relates to a seam weaving machine for making a plastic fabric endless by means of a woven seam with a holder for the reed.
  • the reed has reeds for pushing auxiliary weft threads onto the selvedge, the reeds being pivotally mounted and, starting from the end of the fabric at which the auxiliary weft thread to be inserted in each case projects as a warp fringe, successively press against the auxiliary warp thread to be inserted.
  • the warp thread fringes are alternately inserted as auxiliary weft threads from the two fabric ends.
  • the warp thread fringes, ie the auxiliary weft threads, and the weft threads removed, ie the auxiliary warp threads, are generally monofilaments of 0.1 to 0.5 mm in diameter and the woven seam is produced after the fabric has been heat-set, so that the threads are already those of the respective Corrugation corresponding to the weave or have cranking.
  • the auxiliary warp threads and the auxiliary weft threads with their crankings must fit into one another as in the fabric, so that there is a positive connection.
  • the intermeshing of the auxiliary warp threads and auxiliary weft threads according to their cranking is achieved, inter alia, by the fact that the reed does not simultaneously push the auxiliary weft threads along the entire length, but rather that the auxiliary weft threads are pushed progressively through the seam weaving compartment from their point of exit from the end of the fabric.
  • a reed that enables such a gradual insertion of the auxiliary weft threads is described in DE-U-81 22 448.
  • the reed can be moved into a working position approximated to the selvedge.
  • the reeds, pivoted on one axis, are held back from the selvedge by a rubber strip. Starting from the end of the fabric, they are pressed one after the other against the elasticity of the rubber strip against the auxiliary weft thread by means of a deflecting member.
  • the deflecting member is a roller that can be moved on a guideway and for each insertion process the roller is shifted along the reed across the entire seam width.
  • the object of the invention is to accelerate the seam weaving process.
  • this object is achieved in that the holder of the reed of a reed of the type mentioned is designed in such a way that the reeds are offset or staggered against each other during the forward movement of the sley that the points at which the individual reed the to be added Touch the auxiliary weft, lie on a straight or slightly curved line, the distance from the selvedge of which increases continuously from the point at which the auxiliary weft emerges from the end of the fabric.
  • the reed is preferably constructed in such a way that the reeds have an opening at their lower end with which they are threaded on an axis. At their lower end, the reeds can also be widened into a foot.
  • the end of the foot facing away from the selvedge is supported on a rubber strip, while the end of the foot facing the selvedge sits on a base strip.
  • the base bar and the rubber bar are on opposite sides with respect arranged in the longitudinal direction of the reed so that they exert opposite torques on the reed.
  • the reeds are flexibly pushed forward, ie towards the selvedge, by the rubber strip.
  • the rigid position of the base bar determines the front position of the individual reeds.
  • the base bar can be tilted slightly towards one end of the tissue and towards the other end of the tissue by means of an adjusting device.
  • the tilt axis is parallel to the direction of the auxiliary warp threads and is expediently in the middle of the base bar.
  • the individual reeds move slightly towards or away from the selvedge.
  • the reed formed from the entirety of the reeds can be placed at an angle to the selvedge.
  • the slanted reed is moved from the sley to the selvedge.
  • the outermost reed on the side near the exit point of the warp fringe from the end of the fabric first touches the selvedge and pushes this warp thread fringe in as an auxiliary weft thread, which because of its fixed curl snaps properly between the auxiliary warp threads, which also contain a fixed curl.
  • the individual reeds press against the auxiliary weft thread until it has been pushed in along its entire length or up to the so-called piercing point at which it emerges from the fabric downwards or upwards.
  • the reeds that are already in contact with the auxiliary weft thread are increasingly pressed against the rubber strip during the further movement of the sley and lift off the base strip.
  • the successive insertion of the auxiliary weft takes place in a very short time, namely within the period of time that the sley needs to pass through the angle by which the last reed is offset from the first reed.
  • the base bar After inserting an auxiliary weft thread from one side of the fabric, the base bar is reversed and onto the other side tilted, so that the staggering of the reeds is reversed and an auxiliary weft thread can now be inserted that emerges from the other end of the fabric.
  • the selvedges generally behave in such a way that they have a concave shape at the start of a seam and then a convex shape as the seam process progresses.
  • the selvedge is therefore generally not straight. It is advantageous to change the shape of the reed, i.e. to adapt the arrangement of the reeds to the shape of the selvedge. There are several ways to do this:
  • the axis on which the reeds are threaded can be curved.
  • the reed feet are raised or lowered in accordance with the curvature of the axis relative to the rubber strip and the base strip and are thereby pivoted somewhat towards or away from the selvedge.
  • This pivoting movement is most pronounced in the central area of the reed and decreases towards the lateral end areas.
  • the axis on which the reeds are threaded can be deliberately bent by adjusting devices, for example hydraulic cylinders, which act on the axis via intermediate elements and are thereby adapted to the curvature of the selvedge.
  • adjusting devices for example hydraulic cylinders, which act on the axis via intermediate elements and are thereby adapted to the curvature of the selvedge.
  • the same effect is achieved as with the first option described above.
  • Another option is to bend the base bar and, if necessary, the rubber bar. This can e.g. in such a way that the base bar can be tilted as described above about a tilt axis running through its center and that adjusting devices are provided at each end of the base bar.
  • the fabric ends to be connected are fixed in a frame and the seam weaving machine is moved in this frame along the fabric ends.
  • the advancement of the seam weaving machine can be triggered by a reed which is extended downwards.
  • the selvedge moves in the direction of the sley and the reeds at the dead center of the sley are pressed against the rubber strip.
  • the elongated lower end of the reed is thus also pivoted more strongly and reaches a switch which sends a signal to the control for moving the seam weaving machine further.
  • a sley 1 which can be pivoted in the usual way by a sley drive cylinder 2.
  • the sley 1 has a cross member 3, from the side ends of which project upward bearing supports 4, in which an axis 5 is removably fastened.
  • Riet 6 are lined up on axis 5.
  • the reeds 6 have a bore 8 at the lower end with which they are threaded on the axis 5. By means of spacer rings 13 between them, they are kept at the distance which is predetermined by the thread count of the fabric.
  • the reeds 6 are foot-like at the lower end widened and they are supported with the end of the foot remote from the axis 5 on a rubber strip 9.
  • the opposite, near-axis end of the foot 7 rests on a base bar 10.
  • the arrangement is such that the rubber bar 9 and the base bar 10 exert opposite torques on the reed 6 and thereby determine their position. Due to the elastic force of the rubber strip 9, the individual reeds 6 are pressed against the base strip 10.
  • the rubber strip 9 is fixedly arranged on the cross member 3, while the base strip 10 can be tilted about a pivot point 12 which, in the exemplary embodiment shown, lies in the middle of the base strip 10, but which can also lie at one of the two ends.
  • the axis of rotation 12 lies horizontally in the direction of the movement of the sley 1.
  • the base bar 10 can be tilted by an electrical, mechanical, pneumatic and similar actuating device, for example by an actuating cylinder 11.
  • an electrical, mechanical, pneumatic and similar actuating device for example by an actuating cylinder 11.
  • the base bar 10 is shown with solid lines in its central position, in which all reeds have the same distance from the selvedge. With broken lines, the base bar 10 is shown in its one tilt position, in which the reeds 6 on the left in FIG. 2 are pivoted toward the viewer, that is to say toward the selvedge.
  • FIGS. 3 and 4 show in simplified form the position of the reed and the individual reed 6 when adding auxiliary weft threads.
  • the fabric ends 15, 16 consist of warp threads 17 and weft threads 18 and the fabric ends 15, 16 in the illustration of FIGS. 3 and 4 are already partially connected by a woven seam 19. In the part not yet connected, only the auxiliary warp threads 20 are shown, while the warp thread fringes emerging from the fabric end are omitted for the sake of clarity.
  • Fig. 3 shows the position of the reed for pushing in an auxiliary weft thread emerging from the upper fabric end 15 seen in FIG. 3.
  • the reeds 6 are therefore the smallest distance from the selvedge 21, so that the auxiliary weft thread is progressively pushed in from this fabric end 15 across the width of the woven seam 19.
  • This progressive pushing in takes place within a very short time, namely within the time span which the shutter drive cylinder 2 needs to travel through the distance X shown in FIG. 3.
  • the initially dominant reeds 6, that is, the reeds that first touch the selvedge are lifted off the base bar 10, the lifting movement being absorbed by the elasticity of the rubber bar 9.
  • the base bar 10 is reversed so that the auxiliary weft threads can be inserted alternately from the fabric sides 15 and 16. 4 shows the position of the reed 6 at the beginning of the entry of a warp thread fringe emerging from the fabric end 16 as an auxiliary weft thread.
  • the middle reed 23 is extended downwards and can operate a switch 22.
  • the fabric ends 15, 16 are, as usual, firmly clamped and the seam weaving machine is moved along the fabric ends 15, 16.
  • the shift of the seam weaving machine can be triggered by the switch 22.
  • the progress of the woven seam has the result that the reeds 6 strike earlier at the selvedge and are pressed harder against the rubber strip 9 and accordingly, as seen in FIG. 1, are pivoted further counterclockwise.
  • the extension of the middle reed 23 touches the switch 22, which gives a signal for the further movement of the seam weaving machine by one step.
  • FIG. 5 and 6 are a representation similar to that of FIG. 3, FIG. 5 showing the concave curvature of the woven seam at the beginning of the seam weaving process.
  • the selvedge 21 assumes a straight course and towards the end of the seam weaving process a convex course, as is shown in FIG. 6.
  • the distance of the reed from the selvedge from the fabric end 15 to the fabric end 16 increases uniformly, however, the reed 6 does not lie on a straight line, but on a path corresponding to the shape of the selvedge 21 curved line. It is thereby achieved that the individual reeds insert the auxiliary weft thread one after the other, in spite of the curved course of the selvedge 21 with approximately the same force.
  • FIGS. 7 and 8 show an embodiment similar to that of FIGS. 1 and 2 but with additional equipment for arranging the reed 6 on a curved line, the curvature being adjustable so that the shape of the reed changes with the course that changes during the sewing process the selvedge can be adjusted.
  • an additional cylinder 24 engages via a transverse arm 25 in the middle of the axis 5 and deflects it upwards or downwards, so that the axis 5 is curved upwards or downwards.
  • This cross arm 25 should have approximately the thickness of the spacer ring replaced there by the cross arm 25 at the point of application of the axis 5, so that the reed spacing is also maintained at this point.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Treatment Of Fiber Materials (AREA)
  • External Artificial Organs (AREA)
  • Window Of Vehicle (AREA)
  • Sewing Machines And Sewing (AREA)
  • Woven Fabrics (AREA)

Abstract

Support for the reed of a seam-weaving machine for the continuous production of a plastic fabric by means of a weaving seam, the reed having dents (6) for pushing the auxiliary weft threads up to the selvedge (21), the dents (6) being mounted pivotably and, starting from the fabric end (15,16) from which the respective auxiliary weft thread projects as a warp fringe, pressing successively against the auxiliary weft thread to be pushed forward. So that the dents (6) are already pushed forward successively as a result of the movement of the slay, the dents (6) can be staggered in their position in such a way that the points, at which the dents (6) touch the auxiliary weft thread to be pushed forward, lie approximately on a straight or slightly curved line, of which the distance from the selvedge (21) increases, starting from the exit point of the auxiliary weft thread from the fabric end (15,16). <IMAGE>

Description

Die Erfindung betrifft eine Nahtwebmaschine zum Endlosmachen eines Kunststoffgewebes mittels einer Webnaht mit einer Halterung für das Webblatt. Das Webblatt weist Riete zum Beischieben von Hilfsschußfäden an die Webkante auf, wobei die Riete verschwenkbar gelagert sind und ausgehend von dem Gewebeende, an dem der jeweils beizuschiebende Hilfsschußfaden als Kettfranse vorsteht, aufeinanderfolgend gegen den beizuschiebenden Hilfskettfaden drücken.The invention relates to a seam weaving machine for making a plastic fabric endless by means of a woven seam with a holder for the reed. The reed has reeds for pushing auxiliary weft threads onto the selvedge, the reeds being pivotally mounted and, starting from the end of the fabric at which the auxiliary weft thread to be inserted in each case projects as a warp fringe, successively press against the auxiliary warp thread to be inserted.

Technische Kunststoffgewebe für Verwendungen, bei denen es auf eine absolut gleichmäßige Oberflächenstruktur des Gewebes ankommt, insbesondere bei flachgewobenen Kunststoff-Papiermaschinensieben, werden durch eine Webnaht endlos gemacht. Zur Herstellung einer Webnaht werden an den miteinander zu verbindenden Gewebeenden Kettfäden auf einer Länge von z.B. 15 cm freigelegt, indem die Schußfäden in diesem Bereich entfernt werden. Aus diesen Kettfädenfransen und den aus dem Gewebe entnommenen Schußfäden wird dann die sogenannte Webnaht gebildet, in der die ursprüngliche Gewebebindung exakt wiederhergestellt wird. Dazu wird aus den entnommenen Schußfäden ein Hilfswebfach oder Nahtwebfach aufgespannt, wobei die entnommenen Schußfäden als Hilfskettfäden fungieren. In dieses Hilfswebfach werden abwechselnd von den beiden Gewebeenden die Kettfädenfransen als Hilfsschußfäden eingetragen. Die Kettfadenfransen, d.h. die Hilfsschußfäden, und die entnommenen Schußfäden, d.h. die Hilfskettfäden sind in der Regel Monofilamente von 0,1 bis 0,5 mm Durchmesser und die Herstellung der Webnaht erfolgt nach dem Thermofixieren des Gewebes, so daß die Fäden bereits die der jeweiligen Gewebebindung entsprechende Wellung oder Kröpfung aufweisen. Zur Erzielung einer Webnaht, die eine hohe Zugfestigkeit aufweist und sich in der Musterung der Oberfläche, die für die Markierung im Papier entscheidend ist, nicht von dem übrigen Gewebe unterscheidet, müssen sich die Hilfskettfäden und die Hilfsschußfäden mit ihren Kröpfungen wie im Gewebe ineinanderfügen, so daß sich ein Formschluß ergibt. Das Ineinanderfügen der Hilfskettfäden und Hilfsschußfäden entsprechend ihrer Kröpfung wird unter anderem dadurch erreicht, daß das Webblatt die Hilfsschußfäden nicht gleichzeitig auf der ganzen Länge beischiebt, sondern daß die Hilfsschußfäden ausgehend von ihrer Austrittsstelle aus dem Gewebeende fortschreitend durch das Nahtwebfach beigeschoben werden.Technical plastic fabrics for uses in which an absolutely uniform surface structure of the fabric is important, in particular in the case of flat-woven plastic paper machine screens, are made endless by a woven seam. To produce a woven seam, warp threads of a length of, for example, 15 cm are exposed at the ends of the fabric to be connected by removing the weft threads in this area. The so-called woven seam is then formed from these warp thread fringes and the weft threads removed from the fabric, in which the original weave is exactly restored. For this purpose, an auxiliary weaving shed or seam weaving shed is stretched out of the weft threads removed, the weft threads removed acting as auxiliary warp threads. In this auxiliary shed, the warp thread fringes are alternately inserted as auxiliary weft threads from the two fabric ends. The warp thread fringes, ie the auxiliary weft threads, and the weft threads removed, ie the auxiliary warp threads, are generally monofilaments of 0.1 to 0.5 mm in diameter and the woven seam is produced after the fabric has been heat-set, so that the threads are already those of the respective Corrugation corresponding to the weave or have cranking. In order to achieve a woven seam that has a high tensile strength and does not differ from the rest of the fabric in the patterning of the surface, which is decisive for the marking in the paper, the auxiliary warp threads and the auxiliary weft threads with their crankings must fit into one another as in the fabric, so that there is a positive connection. The intermeshing of the auxiliary warp threads and auxiliary weft threads according to their cranking is achieved, inter alia, by the fact that the reed does not simultaneously push the auxiliary weft threads along the entire length, but rather that the auxiliary weft threads are pushed progressively through the seam weaving compartment from their point of exit from the end of the fabric.

Ein Webblatt, das ein solches sukzessives Beischieben der Hilfsschußfäden ermöglicht, ist in der DE-U-81 22 448 beschrieben. Das Webblatt ist dabei in eine an die Webkante angenäherte Arbeitsstellung bewegbar. Die auf einer Achse schwenkbar gelagerten Riete werden durch eine Gummileiste von der Webkante weg zurückgehalten. Durch ein Auslenkglied werden sie ausgehend von dem Gewebeende gegen die Elastizität der Gummileiste nacheinander gegen den Hilfsschußfaden gedrückt. Das Auslenkglied ist eine auf einer Führungsbahn verschiebbare Rolle und für jeden Beischiebvorgang wird die Rolle entlang der Riete über die gesamte Nahtbreite verschoben.A reed that enables such a gradual insertion of the auxiliary weft threads is described in DE-U-81 22 448. The reed can be moved into a working position approximated to the selvedge. The reeds, pivoted on one axis, are held back from the selvedge by a rubber strip. Starting from the end of the fabric, they are pressed one after the other against the elasticity of the rubber strip against the auxiliary weft thread by means of a deflecting member. The deflecting member is a roller that can be moved on a guideway and for each insertion process the roller is shifted along the reed across the entire seam width.

Das gleiche Ziel wird nach der EP-A-0 043 441 durch eine drehbare Nadelwalze erreicht, die eine Vielzahl biegeelastischer Nadeln aufweist, die in schraubenlinienförmigen Nadelreihen angeordnet sind. Als weitere Möglichkeit wird in dieser Veröffentlichung das Beischieben der Hilfsschußfäden mittels Z-förmiger Nadeln beschrieben, die in einem Führungsbett nebeneinander und einzeln axial verschiebbar angeordnet sind. Mit ihrem vorderen Z-Ende greifen die Nadeln in das Webfach ein. Mittels einer Kulisse werden die Z-förmigen Nadeln nacheinander gegen die Webkante geschoben, so daß der Hilfsschußfaden ausgehend von seiner Austrittsstelle aus dem Gewebeende in einer Wellenbewegung fortschreitend beigeschoben wird.The same goal is achieved according to EP-A-0 043 441 by a rotatable needle roller, which has a plurality of flexible needles, which are arranged in helical rows of needles. As a further possibility, the insertion of the auxiliary weft threads by means of Z-shaped needles is described in this publication, which are arranged axially next to one another and individually in a guide bed. The needles engage in the shed with their front Z-end. By means of a backdrop, the Z-shaped needles are pushed one after the other against the selvedge so that the Auxiliary weft thread is gradually pushed in starting from its point of exit from the fabric end in a wave motion.

Der Erfindung liegt die Aufgabe zugrunde, den Nahtwebprozeß zu beschleunigen.The object of the invention is to accelerate the seam weaving process.

Erfindungsgemäß wird diese Aufgabe dadurch gelöst, daß die Halterung der Riete eines Webblatts der eingangs genannten Art in der Weise ausgebildet ist, daß die Riete bei der Vorwärtsbewegung der Weblade so gegeneinander versetzt oder gestaffelt sind, daß die Punkte, an denen die einzelnen Riete den beizuschiebenden Hilfsschußfaden berühren, auf einer geraden oder leicht gekrümmten Linie liegen, deren Abstand von der Webkante sich ausgehend von der Austrittsstelle der Hilfsschußfäden aus dem Gewebeende stetig vergrößert.According to the invention this object is achieved in that the holder of the reed of a reed of the type mentioned is designed in such a way that the reeds are offset or staggered against each other during the forward movement of the sley that the points at which the individual reed the to be added Touch the auxiliary weft, lie on a straight or slightly curved line, the distance from the selvedge of which increases continuously from the point at which the auxiliary weft emerges from the end of the fabric.

Dadurch wird erreicht, daß der Webzyklus verkürzt wird. Die bisher für das aufeinanderfolgende Beaufschlagen der Riete mittels der durchlaufenden Betätigungsrolle, mittels der sich drehenden Nadelwalze oder durch das Verschieben der Z-Nadeln erforderliche Zeitspanne entfällt. Durch die Staffelung der Riete längs einer zur Webkante schräg verlaufenden geraden oder leicht gekrümmten Linie genügt bereits die Bewegung der Weblade, um den Hilfsschußfaden ausgehend von seinem Austrittsende aus dem Gewebe sukzessive beizuschieben.The result is that the weaving cycle is shortened. The time previously required for the successive action on the reeds by means of the continuous actuating roller, by means of the rotating needle roller or by moving the Z needles is no longer required. By staggering the reed along a straight or slightly curved line that runs obliquely to the selvedge, the movement of the selvedge is sufficient to push the auxiliary weft thread successively from its end of exit out of the fabric.

Vorzugsweise ist das Webblatt so aufgebaut, daß die Riete an ihrem unteren Ende eine Öffnung aufweisen, mit der sie auf einer Achse aufgefädelt sind. An ihrem unteren Ende können die Riete außerdem zu einem Fuß verbreitert sein. Das von der Webkante abgewandte Ende des Fußes stützt sich auf einer Gummileiste ab, während das der Webkante zugewandte Ende des Fußes auf einer Basisleiste aufsitzt. Die Basisleiste und die Gummileiste sind auf entgegengesetzten Seiten bezüglich der Längsrichtung der Riete angeordnet, so daß sie entgegengesetzte Drehmomente auf die Riete ausüben. Durch die Gummileiste werden die Riete nachgiebig nach vorne, d.h. zur Webkante hingedrückt. Durch die in sich starre Basisleiste wird die vordere Position der einzelnen Riete festgelegt. Die Basisleiste ist durch eine Stelleinrichtung etwas zum einen Gewebeende hin und zum anderen Gewebeende hin kippbar. Die Kippachse liegt dabei parallel zur Richtung der Hilfskettfäden und liegt zweckmäßig in der Mitte der Basisleiste. Abhängig von der Stellung der Basisleiste bewegen sich die einzelnen Riete etwas zur Webkante hin oder von ihr weg. Durch ein Kippen der Basisleiste kann daher das aus der Gesamtheit der Riete gebildete Webblatt schräg zur Webkante gestellt werden.The reed is preferably constructed in such a way that the reeds have an opening at their lower end with which they are threaded on an axis. At their lower end, the reeds can also be widened into a foot. The end of the foot facing away from the selvedge is supported on a rubber strip, while the end of the foot facing the selvedge sits on a base strip. The base bar and the rubber bar are on opposite sides with respect arranged in the longitudinal direction of the reed so that they exert opposite torques on the reed. The reeds are flexibly pushed forward, ie towards the selvedge, by the rubber strip. The rigid position of the base bar determines the front position of the individual reeds. The base bar can be tilted slightly towards one end of the tissue and towards the other end of the tissue by means of an adjusting device. The tilt axis is parallel to the direction of the auxiliary warp threads and is expediently in the middle of the base bar. Depending on the position of the base bar, the individual reeds move slightly towards or away from the selvedge. By tilting the base bar, the reed formed from the entirety of the reeds can be placed at an angle to the selvedge.

Das schräggestellte Webblatt wird von der Weblade zur Webkante hin bewegt. Das äußerste Riet auf der der Austrittsstelle der Kettfranse aus dem Gewebeende nahen Seite berührt als erstes die Webkante und schiebt diese Kettfadenfranse als Hilfsschußfaden bei, wobei dieser aufgrund seiner fixierten Wellung regelrecht zwischen den Hilfskettfäden, die ebenfalls eine fixierte Wellung enthalten, einschnappt. Infolge der weiteren Vorwärtsbewegung der Weblade drücken nacheinander die einzelnen Riete gegen den Hilfsschußfaden, bis dieser auf seiner gesamten Länge oder bis zu der sogenannten Verstechstelle, an dem er nach unten oder oben aus dem Gewebe austritt, beigeschoben ist. Die sich bereits in Berührung mit dem Hilfsschußfaden befindenden Riete werden bei der weiteren Bewegung der Weblade verstärkt gegen die Gummileiste gedrückt und heben von der Basisleiste ab. Das sukzessive Beischieben des Hilfsschußfadens geschieht in sehr kurzer Zeit, nämlich innerhalb der Zeitspanne, die die Weblade benötigt um den Winkel zu durchfahren, um den das letzte Riet gegenüber dem ersten Riet versetzt ist.The slanted reed is moved from the sley to the selvedge. The outermost reed on the side near the exit point of the warp fringe from the end of the fabric first touches the selvedge and pushes this warp thread fringe in as an auxiliary weft thread, which because of its fixed curl snaps properly between the auxiliary warp threads, which also contain a fixed curl. As a result of the further forward movement of the sley, the individual reeds press against the auxiliary weft thread until it has been pushed in along its entire length or up to the so-called piercing point at which it emerges from the fabric downwards or upwards. The reeds that are already in contact with the auxiliary weft thread are increasingly pressed against the rubber strip during the further movement of the sley and lift off the base strip. The successive insertion of the auxiliary weft takes place in a very short time, namely within the period of time that the sley needs to pass through the angle by which the last reed is offset from the first reed.

Nach dem Beischieben eines Hilfsschußfadens von der einen Gewebeseite wird die Basisleiste umgesteuert und auf die andere Seite gekippt, so daß sich die Staffelung der Riete umkehrt und nunmehr ein Hilfsschußfaden beigeschoben werden kann, der aus dem anderen Gewebeende austritt.After inserting an auxiliary weft thread from one side of the fabric, the base bar is reversed and onto the other side tilted, so that the staggering of the reeds is reversed and an auxiliary weft thread can now be inserted that emerges from the other end of the fabric.

Von besonderem Vorteil ist bei dieser Staffelung der Riete, daß sich diese parallel zu den Hilfskettfäden verstellen und damit auch bei sehr dichten Geweben günstigste Voraussetzungen für das Beischieben der Hilfsschußfäden vorliegen. Zwischen zwei Rieten können dabei bis zu etwa fünf Hilfskettfäden verlaufen. Ein weiterer Vorteil der Erfindung besteht darin, daß während des Beischiebens nur eine minimale Masse zu beschleunigen ist, nämlich die der Riete, und somit eine sehr schnelle Webladenbewegung hin zur Webkante möglich ist.It is particularly advantageous with this staggering of the reeds that they adjust parallel to the auxiliary warp threads and thus the most favorable conditions for inserting the auxiliary weft threads are present even with very dense fabrics. Up to about five auxiliary warp threads can run between two reeds. Another advantage of the invention is that only a minimal mass, namely that of the reed, can be accelerated during the pushing-in, and thus a very fast weaving movement towards the selvedge is possible.

Die Webkanten verhalten sich in der Regel so, daß sie beim Beginn einer Webnaht einen konkaven und dann bei fortschreitendem Webnahtprozeß einen konvexen Verlauf haben. Die Webkante verläuft also im allgemeinen nicht geradlinig. Es ist von Vorteil, die Form des Webblattes, d.h. die Anordnung der Riete der Form der Webkante anzupassen. Es bestehen dazu mehrere Möglichkeiten:The selvedges generally behave in such a way that they have a concave shape at the start of a seam and then a convex shape as the seam process progresses. The selvedge is therefore generally not straight. It is advantageous to change the shape of the reed, i.e. to adapt the arrangement of the reeds to the shape of the selvedge. There are several ways to do this:

Erstens kann die Achse, auf der die Riete aufgefädelt sind, gekrümmt sein. Durch Verdrehen der Achse werden die Rietfüße entsprechend der Krümmung der Achse gegenüber der Gummileiste und der Basisleiste angehoben oder abgesenkt werden und dadurch etwas zur Webkante hin oder von dieser weg verschwenkt werden. Diese Schwenkbewegung ist im Mittelbereich des Webblattes am stärksten ausgeprägt und nimmt zu den seitlichen Endbereichen hin ab. Durch Drehen der Achse ist es dann möglich, die Anordnung der Riete der sich im Verlauf des Nahtwebprozesses ändernden Krümmung der Webkante anzupassen.First, the axis on which the reeds are threaded can be curved. By turning the axis, the reed feet are raised or lowered in accordance with the curvature of the axis relative to the rubber strip and the base strip and are thereby pivoted somewhat towards or away from the selvedge. This pivoting movement is most pronounced in the central area of the reed and decreases towards the lateral end areas. By rotating the axis, it is then possible to adapt the arrangement of the reeds to the curvature of the selvedge that changes in the course of the seam weaving process.

Zweitens kann die Achse, auf der die Riete aufgefädelt sind, durch Stelleinrichtungen, z.B. hydraulische Zylinder, die über Zwischenglieder an der Achse angreifen, gezielt verbogen werden und dadurch der Krümmung der Webkante angepaßt werden. Es wird also letzten Endes der gleiche Effekt wie bei der vorausgehend beschriebenen ersten Möglichkeit erreicht. In beiden Fällen ist es sinnvoll, die Lagerung der Achse in den Lagerstützen als Gelenklager auszubilden um eine von den Lagerstützen ausgehende Biegelinie der Achse zu erhalten. Dadurch wird der Krümmung der Webkante am besten Rechnung getragen.Secondly, the axis on which the reeds are threaded can be deliberately bent by adjusting devices, for example hydraulic cylinders, which act on the axis via intermediate elements and are thereby adapted to the curvature of the selvedge. In the end, the same effect is achieved as with the first option described above. In both cases it makes sense to design the bearing of the axis in the bearing supports as a spherical bearing in order to obtain a bending line of the axis starting from the bearing supports. This is the best way to take the curvature of the selvedge into account.

Eine weitere Möglichkeit besteht schließlich noch darin, die Basisleiste und gegebenfalls zusätzlich die Gummileiste zu krümmen. Dies kann z.B. in der Weise erfolgen, daß die Basisleiste wie oben beschrieben, um eine durch ihre Mitte verlaufende Kippachse kippbar ist und daß an jedem Ende der Basisleiste Stelleinrichtungen vorgesehen sind.Another option is to bend the base bar and, if necessary, the rubber bar. This can e.g. in such a way that the base bar can be tilted as described above about a tilt axis running through its center and that adjusting devices are provided at each end of the base bar.

Bei der Herstellung einer Webnaht sind die zu verbindenden Gewebeenden in einem Gestell festgelegt und wird die Nahtwebmaschine in diesem Gestell entlang der Gewebeenden verschoben. Der Vorschub der Nahtwebmaschine kann nach einer bevorzugten Ausgestaltung der Erfindung durch ein nach unten verlängertes Riet ausgelöst werden. Beim Fortschreiten der Webnaht wandert die Webkante in Richtung der Weblade und es werden dadurch die Riete am vorderen Totpunkt der Weblade stärker gegen die Gummileiste gedrückt. Das verlängerte untere Ende des Rietes wird damit ebenfalls stärker verschwenkt und erreicht einen Schalter, der ein Signal an die Steuerung zum Weiterbewegen der Nahtwebmaschine sendet.When producing a woven seam, the fabric ends to be connected are fixed in a frame and the seam weaving machine is moved in this frame along the fabric ends. According to a preferred embodiment of the invention, the advancement of the seam weaving machine can be triggered by a reed which is extended downwards. As the seam progresses, the selvedge moves in the direction of the sley and the reeds at the dead center of the sley are pressed against the rubber strip. The elongated lower end of the reed is thus also pivoted more strongly and reaches a switch which sends a signal to the control for moving the seam weaving machine further.

Ein Ausführungsbeispiel der Erfindung wird nachfolgend anhand der Zeichnung beschrieben. Es zeigen:

Fig. 1
den oberen Teil einer Weblade und das Webblatt in Seitenansicht, d.h. in Richtung der Hilfsschußfäden;
Fig. 2
den oberen Teil der Weblade und das Webblatt von Fig. 1 in einer Ansicht von vorne, d.h. in Richtung der Hilfskettfäden;
Fig. 3
in einer schematisierten Darstellung das Webblatt von oben zu dem Zeitpunkt, an dem das erste Riet die Webkante berührt und zwar beim Beischieben eines Hilfsschußfadens von der einen Seite;
Fig. 4
eine Ansicht ähnlich der von Fig. 3 jedoch beim Beischieben eines Hilfsschußfadens von der anderen Seite;
Fig. 5
eine Ansicht ähnlich der von Fig. 3, wobei die konkave Krümmung der Webnaht zu Beginn des Nahtwebprozesses,
Fig. 6
eine Darstellung ähnlich der von Fig. 5, wobei die konvexe Krümmung der Webnaht zum Ende des Nahtwebprozesses hin erkennbar ist,
Fig. 7
in Seitenansicht die Zusatzeinrichtung an der Weblade zur Erzielung einer gekrümmten Form des Webblattes und
Fig. 8
das Ausführungsbeispiel von Fig. 7 in einer Ansicht von vorne.
An embodiment of the invention is described below with reference to the drawing. Show it:
Fig. 1
the upper part of a sley and the reed in side view, ie in the direction of the auxiliary weft threads;
Fig. 2
the upper part of the sley and the reed of Fig. 1 in a view from the front, ie in the direction the auxiliary warp threads;
Fig. 3
in a schematic representation of the reed from above at the point in time at which the first reed touches the selvedge, namely when an auxiliary weft thread is pushed in from one side;
Fig. 4
a view similar to that of Figure 3, but when inserting an auxiliary weft from the other side.
Fig. 5
3 shows a view similar to that of FIG. 3, the concave curvature of the woven seam at the beginning of the seam weaving process,
Fig. 6
5 shows a representation similar to that of FIG. 5, the convex curvature of the woven seam being recognizable towards the end of the seam weaving process,
Fig. 7
in side view the additional device on the sley to achieve a curved shape of the reed and
Fig. 8
the embodiment of FIG. 7 in a view from the front.

In den Fig. 1 und 2 ist das obere Ende einer Weblade 1 gezeigt, die in üblicher Weise durch einen Webladenantriebszylinder 2 verschwenkbar ist. Am oberen Ende weist die Weblade 1 einen Querträger 3 auf, von dessen seitlichen Enden nach oben Lagerstützen 4 abstehen, in denen eine Achse 5 herausnehmbar befestigt ist. Auf der Achse 5 sind Riete 6 aufgereiht. Die Riete 6 weisen am unteren Ende eine Bohrung 8 auf, mit der sie auf der Achse 5 aufgefädelt sind. Durch dazwischenliegende Distanzringe 13 werden sie auf dem Abstand gehalten, der durch die Fadenzahl des Gewebes vorgegeben ist. Die Riete 6 sind am unteren Ende fußartig verbreitert und sie stützen sich mit dem von der Achse 5 entfernten Ende des Fußes auf einer Gummileiste 9 ab. Das entgegengesetzte, achsnahe Ende des Fußes 7 ruht auf einer Basisleiste 10. Die Anordnung ist dabei so getroffen, daß die Gummileiste 9 und die Basisleiste 10 entgegengesetzte Drehmomente auf die Riete 6 ausüben und dadurch deren Stellung festlegen. Durch die elastische Kraft der Gummileiste 9 werden die einzelnen Riete 6 gegen die Basisleiste 10 gedrückt. Die Gummileiste 9 ist fest auf dem Querträger 3 angeordnet, während die Basisleiste 10 um einen Drehpunkt 12 kippbar ist, der bei dem gezeigten Ausführungsbeispiel in der Mitte der Basisleiste 10 liegt, der jedoch auch an einem der beiden Enden liegen kann. Die Drehachse 12 liegt dabei horizontal in Richtung der Bewegung der Weblade 1. Die Basisleiste 10 kann durch eine elektrische, mechanische, pneumatische und dergleichen Stelleinrichtung, z.B. durch einen Stellzylinder 11, gekippt werden. Durch das Kippen der Basisleiste 10 werden die einzelnen Riete 6 unterschiedlich weit zur Webkante hin und von ihr weg verschwenkt und dabei unterschiedlich stark gegen die Gummileiste 9 gedrückt.1 and 2, the upper end of a sley 1 is shown, which can be pivoted in the usual way by a sley drive cylinder 2. At the upper end, the sley 1 has a cross member 3, from the side ends of which project upward bearing supports 4, in which an axis 5 is removably fastened. Riet 6 are lined up on axis 5. The reeds 6 have a bore 8 at the lower end with which they are threaded on the axis 5. By means of spacer rings 13 between them, they are kept at the distance which is predetermined by the thread count of the fabric. The reeds 6 are foot-like at the lower end widened and they are supported with the end of the foot remote from the axis 5 on a rubber strip 9. The opposite, near-axis end of the foot 7 rests on a base bar 10. The arrangement is such that the rubber bar 9 and the base bar 10 exert opposite torques on the reed 6 and thereby determine their position. Due to the elastic force of the rubber strip 9, the individual reeds 6 are pressed against the base strip 10. The rubber strip 9 is fixedly arranged on the cross member 3, while the base strip 10 can be tilted about a pivot point 12 which, in the exemplary embodiment shown, lies in the middle of the base strip 10, but which can also lie at one of the two ends. The axis of rotation 12 lies horizontally in the direction of the movement of the sley 1. The base bar 10 can be tilted by an electrical, mechanical, pneumatic and similar actuating device, for example by an actuating cylinder 11. By tilting the base bar 10, the individual reeds 6 are pivoted to different degrees to and from the selvedge and pressed to the rubber bar 9 to different extents.

In Fig. 2 ist die Basisleiste 10 mit ausgezogenen Linien in ihrer Mittelposition dargestellt, in der alle Riete den gleichen Abstand von der Webkante haben. Mit unterbrochenen Linien ist die Basisleiste 10 in ihrer einen Kippstellung dargestellt, bei der die in Fig. 2 linken Riete 6 zum Betrachter zu, also zur Webkante hin verschwenkt sind.In Fig. 2, the base bar 10 is shown with solid lines in its central position, in which all reeds have the same distance from the selvedge. With broken lines, the base bar 10 is shown in its one tilt position, in which the reeds 6 on the left in FIG. 2 are pivoted toward the viewer, that is to say toward the selvedge.

Die Fig. 3 und 4 zeigen in vereinfachter Form die Stellung des Webblattes und der einzelnen Riete 6 beim Beischieben von Hilfsschußfäden. Die Gewebeenden 15, 16 bestehen aus Kettfäden 17 und Schußfäden 18 und die Gewebeenden 15, 16 sind in der Darstellung der Fig. 3 und 4 bereits durch eine Webnaht 19 teilweise verbunden. In dem noch nicht verbundenen Teil sind nur die Hilfskettfäden 20 dargestellt, während die aus dem Gewebeende austretenden Kettfadenfransen der Übersichtlichkeit halber weggelassen sind. Fig. 3 zeigt die Stellung des Webblattes zum Beischieben eines von dem, in Fig. 3 gesehenen, oberen Gewebeende 15 austretenden Hilfsschußfadens. An diesem Gewebeende 15 haben die Riete 6 daher den geringsten Abstand von der Webkante 21, so daß der Hilfsschußfaden ausgehend von diesem Gewebeende 15 fortschreitend über die Breite der Webnaht 19 beigeschoben wird. Dieses fortschreitende Beischieben erfolgt dabei innerhalb sehr kurzer Zeit, nämlich innerhalb der Zeitspanne, die der Webladenantriebszylinder 2 benötigt, um die in Fig. 3 eingezeichnete Strecke X zu durchfahren. Am vorderen Totpunkt der Bewegung der Weblade 1 sind die zunächst dominanten Riete 6, das sind diejenigen Riete, die als erste die Webkante berühren, von der Basisleiste 10 abgehoben, wobei der Abhebeweg durch die Elastizität der Gummileiste 9 aufgenommen wird.3 and 4 show in simplified form the position of the reed and the individual reed 6 when adding auxiliary weft threads. The fabric ends 15, 16 consist of warp threads 17 and weft threads 18 and the fabric ends 15, 16 in the illustration of FIGS. 3 and 4 are already partially connected by a woven seam 19. In the part not yet connected, only the auxiliary warp threads 20 are shown, while the warp thread fringes emerging from the fabric end are omitted for the sake of clarity. Fig. 3 shows the position of the reed for pushing in an auxiliary weft thread emerging from the upper fabric end 15 seen in FIG. 3. At this fabric end 15, the reeds 6 are therefore the smallest distance from the selvedge 21, so that the auxiliary weft thread is progressively pushed in from this fabric end 15 across the width of the woven seam 19. This progressive pushing in takes place within a very short time, namely within the time span which the shutter drive cylinder 2 needs to travel through the distance X shown in FIG. 3. At the front dead center of the movement of the sley 1, the initially dominant reeds 6, that is, the reeds that first touch the selvedge, are lifted off the base bar 10, the lifting movement being absorbed by the elasticity of the rubber bar 9.

Nach dem Anschlag, d.h. nach dem vollständigen Beischieben eines Hilfsschußfadens, wird die Basisleiste 10 jeweils umgesteuert, so daß die Hilfsschußfäden abwechselnd von den Gewebeseiten 15 und 16 eingetragen werden können. In Fig. 4 ist die Stellung der Riete 6 zu Beginn des Eintrages einer von der dem Gewebeende 16 austretenden Kettfadenfranse als Hilfsschußfaden gezeigt.After the attack, i.e. after the complete insertion of an auxiliary weft thread, the base bar 10 is reversed so that the auxiliary weft threads can be inserted alternately from the fabric sides 15 and 16. 4 shows the position of the reed 6 at the beginning of the entry of a warp thread fringe emerging from the fabric end 16 as an auxiliary weft thread.

Das mittlere Riet 23 ist nach unten verlängert und kann einen Schalter 22 betätigen. Bei der Herstellung der Webnaht sind wie üblich die Gewebeenden 15, 16 fest eingespannt und wird die Nahtwebmaschine entlang der Gewebeenden 15, 16 verschoben. Die Verschiebung der Nahtwebmaschine kann durch den Schalter 22 ausgelöst werden. Das Fortschreiten der Webnaht hat zur Folge, daß die Riete 6 früher an der Webkante anschlagen und kräftiger gegen die Gummileiste 9 gedrückt werden und dementsprechend, in Fig. 1 gesehen, weiter im Gegenuhrzeigersinn verschwenkt werden. Bei entsprechendem Fortschritt der Webnaht berührt die Verlängerung des mittleren Riets 23 dann den Schalter 22, der ein Signal für die Weiterbewegung der Nahtwebmaschine um einen Schritt gibt.The middle reed 23 is extended downwards and can operate a switch 22. In the production of the woven seam, the fabric ends 15, 16 are, as usual, firmly clamped and the seam weaving machine is moved along the fabric ends 15, 16. The shift of the seam weaving machine can be triggered by the switch 22. The progress of the woven seam has the result that the reeds 6 strike earlier at the selvedge and are pressed harder against the rubber strip 9 and accordingly, as seen in FIG. 1, are pivoted further counterclockwise. With corresponding progress of the woven seam, the extension of the middle reed 23 then touches the switch 22, which gives a signal for the further movement of the seam weaving machine by one step.

Die Fig. 5 und 6 sind eine Darstellung ähnlich der von Fig. 3, wobei Fig. 5 die konkave Krümmung der Webnaht zu Beginn des Nahtwebprozesses zeigt. Im Verlauf des Nahtwebprozesses nimmt die Webkante 21 dann einen geraden und gegen Ende des Nahtwebprozesses einen konvexen Verlauf an, wie er in Fig. 6 gezeigt ist. Wie bei der Ausführungsform von Fig. 3 nimmt dabei der Abstand der Riete von der Webkante von dem Gewebeende 15 zu dem Gewebeende 16 hin gleichmäßig zu, wobei die Riete 6 jedoch nicht auf einer geraden Linie liegen, sondern auf einer entsprechend dem Verlauf der Webkante 21 gekrümmten Linie. Dadurch wird erreicht, daß die einzelnen Riete zeitlich aufeinanderfolgend den Hilfsschußfaden beischieben, und zwar trotz des gekrümmten Verlaufes der Webkante 21 mit annähernd gleicher Kraft.5 and 6 are a representation similar to that of FIG. 3, FIG. 5 showing the concave curvature of the woven seam at the beginning of the seam weaving process. In the course of the seam weaving process, the selvedge 21 then assumes a straight course and towards the end of the seam weaving process a convex course, as is shown in FIG. 6. As in the embodiment of FIG. 3, the distance of the reed from the selvedge from the fabric end 15 to the fabric end 16 increases uniformly, however, the reed 6 does not lie on a straight line, but on a path corresponding to the shape of the selvedge 21 curved line. It is thereby achieved that the individual reeds insert the auxiliary weft thread one after the other, in spite of the curved course of the selvedge 21 with approximately the same force.

Die Fig. 7 und 8 zeigen ein Ausführungsbeispiel ähnlich dem der Fig. 1 und 2 jedoch mit einer Zusatzausrüstung zur Anordnung der Riete 6 auf einer gekrümmten Linie, wobei die Krümmung einstellbar ist, so daß die Form des Webblattes dem sich während des Nahtwebprozesses ändernden Verlauf der Webkante angepaßt werden kann. Ein zusätzlicher Zylinder 24 greift dazu über einen Querarm 25 in der Mitte der Achse 5 an und lenkt diese nach oben oder unten aus, so daß die Achse 5 einen nach oben bzw. unten gebogenen Verlauf erhält. Dieser Querarm 25 sollte am Angriffspunkt der Achse 5 etwa die Dicke des dort von dem Querarm 25 ersetzten Distanzringes haben, damit der Rietabstand auch an dieser Stelle gewahrt bleibt. Wird die Achse 5 nach unten gebogen, so hat dies zur Folge, daß die Riete 6 etwas von der Webkante weggeschwenkt werden - s. Buchstabe "a" in Fig. 7 -, und zwar die Riete im mittleren Bereich der Achse 5 stärker als die weiter außen angeordneten Riete. Durch die Gummileiste 9 werden die Riete 6 dabei trotz ihrer unterschiedlichen Stellung unter Spannung gehalten. Die Punkte, an denen die Riete 6 den beizuschiebenden Hilfsschußfaden berühren, liegen also auf einer von der Webkante 21 weggebogenen, konvexen Linie, wie es in Fig. 5 gezeigt ist, wenn der Zylinder 24 die Achse 5 nach unten auslenkt. Umgekehrt ordnen sich die Riete 6 auf der in Fig. 6 gezeigten konkaven Linie an, wenn die Achse 5 durch den Zylinder 24 nach oben ausgelenkt wird - s. Buchstabe "b" in Fig. 7. Wegen der Hebelübersetzung, die sich aus der Länge der Riete 6 im Vergleich zu dem Abstand des Mittelpunktes der Achse 5 von der Basisleiste 10 ergibt, bedarf es nur einer geringfügigen Hubveränderung des Zylinders 24, um eine konvexe oder konkave Form des Webblattes zu erzeugen. Zur Erzielung einer möglichst gleichmäßigen Biegung der Achse 5 ruhen deren Enden zweckmäßig in Gelenklagern 26.7 and 8 show an embodiment similar to that of FIGS. 1 and 2 but with additional equipment for arranging the reed 6 on a curved line, the curvature being adjustable so that the shape of the reed changes with the course that changes during the sewing process the selvedge can be adjusted. For this purpose, an additional cylinder 24 engages via a transverse arm 25 in the middle of the axis 5 and deflects it upwards or downwards, so that the axis 5 is curved upwards or downwards. This cross arm 25 should have approximately the thickness of the spacer ring replaced there by the cross arm 25 at the point of application of the axis 5, so that the reed spacing is also maintained at this point. If the axis 5 is bent downwards, the result is that the reeds 6 are pivoted slightly away from the selvedge - see. Letter "a" in Fig. 7 -, namely the reeds in the central region of the axis 5 stronger than the reeds arranged further out. The rubber strips 9 keep the reeds 6 under tension despite their different positions. The points at which the reeds 6 touch the auxiliary weft to be inserted are therefore on a convex line bent away from the selvedge 21, as shown in FIG. 5, when the cylinder 24 deflects axis 5 downwards. Conversely, the reeds 6 are arranged on the concave line shown in FIG. 6 when the axis 5 is deflected upwards by the cylinder 24 - see FIG. Letter "b" in Fig. 7. Because of the leverage, which results from the length of the reed 6 compared to the distance from the center of the axis 5 from the base bar 10, only a slight change in stroke of the cylinder 24 is required to a convex or to produce a concave shape of the reed. In order to achieve a bend of the axis 5 that is as uniform as possible, the ends of the ends 5 expediently rest in spherical bearings 26.

Das gleich Ergebnis kann auch durch Verwendung einer in sich gebogenen Achse 5 erreicht werden, die durch einen Stellmotor gedreht wird, so daß die Durchbiegung der Achse 5 nach oben oder unten gerichtet werden kann. Selbstverständlich ist auch jede Zwischenstellung möglich, wobei sich ein gerades Webblatt ergibt, wenn die Durchbiegung der Achse 5 in der Horizontalen liegt.The same result can also be achieved by using a curved axis 5 which is rotated by a servomotor so that the deflection of the axis 5 can be directed upwards or downwards. Of course, any intermediate position is also possible, which results in a straight reed when the deflection of the axis 5 is horizontal.

Claims (8)

  1. Seam-weaving machine for joining the ends of a plastic fabric by means of a woven seam, comprising a support for a reed, the reed having reed dents (6) for the shifting of the auxiliary weft threads against the fell (21) and the reed dents (6) being pivotably mounted, being pressed against a base strip (10) by an elastic force and, starting from the fabric end (15, 16) from which the auxiliary weft thread in question protrudes as a warp fringe, are pressing successively against the auxiliary warp thread to be shifted,
    characterized in that
    the reed dents (6), in their forward position in which they are lieing against the base strip (10), are staggerable such that the points at which the reed dents (6) touch the auxiliary weft thread to be shifted lie on a straight or slightly curved line whose distance from the fell (21) increases, starting from the point of emergence of the auxiliary weft thread from the fabric end (15, 16).
  2. Seam-weaving machine according to Claim 1, characterized in that the reed dents (6) have at their lower end a bore (8) with which they are strung together on a shaft (5) with interpositioning of spacing rings (13).
  3. Seam-weaving machine according to Claim 1 or 2, characterized in that the reed dents (6) are widened in the manner of a foot (7) at their lower end and support themselves with one end of the foot against a rubber strip (9) and with the other end of the foot against a tiltable base strip (10).
  4. Seam-weaving machine according to Claim 3, characterized in that the base strip is tiltable by an adjustment device (11) about a horizontal axis running parallel to the auxiliary warp threads.
  5. Seam-weaving machine according to one of Claims 1 to 4, characterized in that at least one reed dent (6) is downwardly extended (23) and, as the seam-weaving process progresses, actuates a switch (22) for the further movement of the seam-weaving machine.
  6. Seam-weaving machine according to one of Claims 2 to 5, characterized in that the shaft (5) on which the reed dents (6) are strung together has a bent shape and is rotatable by a drive apparatus, whereby the line on which the points lie at which the reed dents (6) touch the auxiliary weft thread to be shifted can be given a concave, a straight or a convex shape.
  7. Seam-weaving machine according to one of Claims 2 to 5, characterized in that an adjustment apparatus is provided which, through the action of force, gives the shaft (5) an elastic bending, whereby a concave, straight or convex course is achievable of the line on which the points lie at which the reed dents (6) touch the auxiliary weft thread to be shifted.
  8. Seam-weaving machine according to Claim 6 or 7, characterized in that the shaft (5) is pivotably mounted at its ends.
EP93113462A 1992-08-24 1993-08-24 Support for the reed of a seam weaving machine Expired - Lifetime EP0586959B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9211353U DE9211353U1 (en) 1992-08-24 1992-08-24 Holder for the reed of a seam weaving machine
DE9211353U 1992-08-24

Publications (2)

Publication Number Publication Date
EP0586959A1 EP0586959A1 (en) 1994-03-16
EP0586959B1 true EP0586959B1 (en) 1997-05-28

Family

ID=6882987

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93113462A Expired - Lifetime EP0586959B1 (en) 1992-08-24 1993-08-24 Support for the reed of a seam weaving machine

Country Status (7)

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US (1) US5421373A (en)
EP (1) EP0586959B1 (en)
JP (1) JPH06218163A (en)
AT (1) ATE153713T1 (en)
CA (1) CA2104616A1 (en)
DE (2) DE9211353U1 (en)
FI (1) FI102393B (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5465762A (en) * 1994-06-10 1995-11-14 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Adjustable reed for weaving net-shaped tailored fabrics
US6014797A (en) * 1997-06-16 2000-01-18 Jwi Ltd. Method and apparatus for unravelling threads
DE20105091U1 (en) * 2001-03-23 2002-09-05 Wangner Finckh Gmbh & Co Kg Collet for seam weaving machines
US7168456B1 (en) * 2005-10-26 2007-01-30 North Rocky Robot Technology, Inc. (Nortec) Method and apparatus to remove yarns from the fringes of an industrial textile
DE202005018856U1 (en) * 2005-12-01 2007-04-12 Wangner Gmbh & Co Kg Holder for the weaving reed of a seam loom, to roll the seam weft thread either by means of oblique position of the reed or movable roller
CN102587017A (en) * 2012-02-24 2012-07-18 苏州赛力菲陶纤有限公司 Wave-shaped reed
CN104313773B (en) * 2014-10-09 2015-12-23 苏州大学 A kind of experiment deformable reed device
EP3425095B1 (en) * 2017-07-07 2020-09-30 Groz-Beckert KG Reed and method for its production

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Publication number Priority date Publication date Assignee Title
DE580631C (en) * 1933-07-14 Otto Buesser Reed with a wavy line of repulsion
DE33040C (en) * A. KLOSE in Rorschach, Schweiz Movable connection between frame and spring in railway vehicles with steering axles
DD33040A (en) *
US3622415A (en) * 1967-12-22 1971-11-23 Lindsay Wire Weaving Co Papermaking fabric seam and method of making the same
CH510155A (en) * 1970-07-13 1971-07-15 Sulzer Ag Sley with reed
DE2151579A1 (en) * 1971-10-16 1973-04-19 Wieland Dietrich Dipl Phys Loom comb or reed substitute - blades on rotary shaft come between warp threads only to pack weft
CH637709A5 (en) * 1979-02-01 1983-08-15 Rueti Ag Maschf Profiled reed dent for a reed and use of the reed dent for the reed of a jet-weaving machine
DE3025909C2 (en) * 1980-07-09 1983-07-14 Hermann Wangner Gmbh & Co Kg, 7410 Reutlingen Method and device for producing a woven seam between two fabric ends
DE8122448U1 (en) * 1981-07-30 1983-01-13 Fa. F. Oberdorfer, 7920 Heidenheim WEBLADE
US4359501A (en) * 1981-10-28 1982-11-16 Albany International Corp. Hydrolysis resistant polyaryletherketone fabric
DE3674192D1 (en) * 1986-02-22 1990-10-18 Asten Group AUTOMATIC MACHINE TO CONNECT TWO ENDS OF A TAPE.
CH680004A5 (en) * 1989-02-14 1992-05-29 Albert Moessinger Comb for progressive weft beating-in - is supported against distortion between its ends, eliminating need for comb tooth control
GB8929112D0 (en) * 1989-12-22 1990-02-28 Avon Ind Polymers Tensioning straps
DE9205834U1 (en) * 1992-05-04 1992-10-08 Chemnitzer Webmaschinenbau Gmbh, O-9010 Chemnitz, De

Also Published As

Publication number Publication date
FI933709A (en) 1994-02-25
FI102393B1 (en) 1998-11-30
CA2104616A1 (en) 1994-02-25
FI102393B (en) 1998-11-30
DE9211353U1 (en) 1994-01-05
EP0586959A1 (en) 1994-03-16
DE59306573D1 (en) 1997-07-03
JPH06218163A (en) 1994-08-09
US5421373A (en) 1995-06-06
ATE153713T1 (en) 1997-06-15
FI933709A0 (en) 1993-08-24

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