EP2312050A1 - Method for cutting a hose made of textile materials - Google Patents

Method for cutting a hose made of textile materials Download PDF

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Publication number
EP2312050A1
EP2312050A1 EP10013622A EP10013622A EP2312050A1 EP 2312050 A1 EP2312050 A1 EP 2312050A1 EP 10013622 A EP10013622 A EP 10013622A EP 10013622 A EP10013622 A EP 10013622A EP 2312050 A1 EP2312050 A1 EP 2312050A1
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EP
European Patent Office
Prior art keywords
tube
hose
separating element
heat treatment
layers
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Granted
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EP10013622A
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German (de)
French (fr)
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EP2312050B1 (en
Inventor
Manfred Dannewitz
Peter Ullinger
Peer Dannewitz
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Dannewitz & Co GmbH KG
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Dannewitz & Co GmbH KG
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Publication of EP2312050A1 publication Critical patent/EP2312050A1/en
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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06H—MARKING, INSPECTING, SEAMING OR SEVERING TEXTILE MATERIALS
    • D06H7/00—Apparatus or processes for cutting, or otherwise severing, specially adapted for the cutting, or otherwise severing, of textile materials
    • D06H7/02—Apparatus or processes for cutting, or otherwise severing, specially adapted for the cutting, or otherwise severing, of textile materials transversely

Definitions

  • the invention relates to a method according to the preamble of patent claim 1.
  • fusion or bonding of the filaments and filaments is undesirable for a product to be used as a shrink tubing, since the filaments may be lost during later processing, i. during the shrinking process, yet to shift against each other. Fused together or fused threads and filaments can therefore affect the final shrinkage process of the hollow tube on the object to be shrunk.
  • the EP 0 549 757 B1 deals with a process for producing label tapes and not one.
  • Method for producing hose sections from a textile fabric hose in which the upper and lower tube layers are treated in a heat treatment device in one step so that the threads are fixed at the ends of the tube sections so that they do not "fall out” in the cut edges.
  • the textile web is provided in the region of the later interfaces with running in the web length direction melting and / or adhesive threads that in the area melt the pressing and heating device, wherein the melt diffuse into adjacent areas of the textile web and thereby connect the threads of the textile web substantially inseparable.
  • WO 98/54393 A1 discloses a method for severing a textile woven hollow tube, wherein at the point at which the tube is to be separated, applying an adhesive material in order to make it difficult in the region of the interfaces uncontrolled emergence of warp or weft threads from the tissue.
  • the application of adhesive in the separation area of the hollow tube often results in disturbing changes in the texture of the outer surface of the Hobl hose ,
  • the problem underlying the invention is based on the fact that a flat-wound textile hose unpacked and lying flat orthogonal to the longitudinal direction in sections of equal length to be cut.
  • the multifilament fiber strands have the property of splitting after cutting.
  • the side-by-side multifilament strands, which alternately over- and under-run the monofilament, are not interconnected. Due to the weaving and winding process, the monofilament strand in the fabric generally does not run orthogonally to the tube longitudinal direction and not parallel to the cut edge and not straight, but wavy / curvy.
  • the Monifil thread can be severed one to several times, so that there may be several Monifil thread pieces in the fabric.
  • the longitudinally transverse, woven monofilament thread is knotted once at the side and longitudinal seam. Otherwise, the monofilament thread is held firmly by the entanglement / interweaving with the multifilament fiber strands.
  • the monofilament thread can be released from the woven fabric, so that short sections of the monofilament thread fall out of the cut edge. These cuts cause problems and must be prevented or removed.
  • the invention is based on a method according to the preamble of patent claim 1.
  • the invention has for its object to provide a comparison with the known methods improved method to achieve that the threads are sufficiently conditioned in the region of the hose ends for the subsequent processing or shrinking process.
  • the invention provides that one heats the two tube layers in one step so far that the fabric threads are thermoformable under pressure and conditionally durable press each other in the region of each of the two tube layers and hooked together to form retention, and that one introduces a preferably rigid separating element between the two tube layers.
  • the tissue consisting of synthetic fibers must cool down, so that the compression and the retention become conditionally durable.
  • the separating element is preferably thermally conductive, must be heat-resistant and must not decompose, it must not absorb pressure and the softened plastic must not adhere to it.
  • the separator may be effective either following the heat treatment or during the heat treatment in the heat treatment apparatus.
  • the pressing, heating, cooling and cutting in the middle of the pressed area must be done quickly, since the process for a series part production with high clock frequency and quantity is good.
  • the problematic course of the monofilament threads can preferably be corrected by alternating stretching / stretching and relaxing at right angles to the longitudinal direction, so that fewer monofilament thread pieces are formed during cutting and the cut edge resulting after cutting is less prone to fraying.
  • a hose is used whose circumferentially extending threads, in particular the weft threads, are radiation-crosslinked polyolefin threads.
  • a conventional ultrasonic welding machine is used, which is able to deliver a high ultrasonic energy within fractions of a second.
  • the machine used according to the invention preferably transmits the ultrasound energy by means of a sonotrode 3 which can be moved up and down, which as an abutment lies opposite an anvil 4.
  • This heat treatment device 3, 4 a hose 2 is supplied in the direction of the arrow f1, which is merged into two flat superimposed lower and upper layers 2.1, 2.2.
  • the threads of the two tube layers 2.1 and 2.2 are heated to the extent that the fabric threads thermally deformed under pressure application and press in the pressing area a each of the two tube layers conditionally durable intermesh or hook.
  • conditionally durable pressed into each other thus does not correspond to a “durable durable fusion" of the fabric threads.
  • a separating element 11 is followed by a separating element restraining device consisting of a preferably stationary roller 14 and a roller 13 which can be moved up and down in cooperation therewith.
  • the separating element 11 is introduced at the beginning of a process cycle behind the heat treatment device 3, 4 into the open leading hose end, wherein the separator-retaining device 13, 14 is opened by the upper movable roller 13 is raised so far that the separator 11 came inserted into the tube.
  • the preferably made of metal separator 11 has either the shape of a ball or a roller body with preferably to the Roll ends towards tapered cross sections and rounded ends.
  • the lower and upper tube layers 2.1 and 2.2 are separated or lifted off from each other by means of the separating element 11 following the heat treatment and pressing step "b", before the tube 2 is fed from the rollers 13, 14 to a cutting device FIG. 1 consists of an up and down movable cutting blade 15 and an opposite counter knife (anvil) 16.
  • a rigid separator 21 in the form of a flat, preferably made of sheet metal separation tab 21 is introduced, ideally the ultrasonic energy of the sonotrode 3 only in the tubing and is not converted into heat in the separator 21.
  • the metal sheet of the separating tongue 21 is preferably heat-resistant and thermally conductive and not deformable in the applied pressing force and should not adhere to the filaments.
  • a hot-cutting device preferably in the form of a laser cutting device to located in the interface, possibly still exposed fiber ends in the tube layers 2.1 , 2.2 to weld together.
  • the separated fabric tube sections 1 are in the region of their ends sections 1.1 and 1.2 with each other pressed and hooked thread or. Provided fiber ends.
  • the separating element 11 preferably has a thickness that becomes thinner in the direction of the heat treatment device 3, 4 relative to the two hose layers Section whose width preferably also becomes smaller towards the heat treatment device.

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

Abstract

The method involves folding the tube (2) in two surface superimposed layers. The fabric threads are printed and two layers of hose are hooked into each other. The two layers of hose are introduced into a rigid separation element. An independent claim is also included for a device for executing the separating method.

Description

Die Erfindung betrifft ein Verfahren gemäß dem Oberbegriff des Patentanspruchs 1.The invention relates to a method according to the preamble of patent claim 1.

Ein in der DE 10 2006 030 583 B3 beschriebenes Verfahren zum Durchtrennen eines aus textilen Materialien bestehenden Schlauchs, im Folgenden auch als Gewebeschlauch bezeichnet, umfasst folgende Schritte:

  • Einbringen eines Trennpapiers in das Innere eines textilen Schlauchs;
  • Bereitlegen des Schlauchs derart, dass er in zwei übereinander liegenden Lagen flächig vorliegt;
  • oberflächliches Anschmelzen einer ersten begrenzten Fläche der oberen Schlauchlage;
  • oberflächliches Anschmelzen einer zweiten, der ersten begrenzten Fläche gegenüberliegenden begrenzten Fläche der unteren Schlauchlage, und
  • Durchtrennen des Schlauchs im Bereich der begrenzten Fläche
An Indian DE 10 2006 030 583 B3 described method for cutting through a tube consisting of textile materials, hereinafter also referred to as fabric hose, comprises the following steps:
  • Introducing a release paper into the interior of a textile tube;
  • Providing the tube such that it is present in two superimposed layers surface;
  • superficial melting of a first limited area of the upper tube layer;
  • Superficial melting of a second, the first limited area opposite limited surface of the lower tube layer, and
  • Cutting the hose in the area of the limited area

Bei einem mit einem solchen Verfahren erzeugten Produkt soll ein Herausfallen von Fadenstücken im Schnittkantenbereich verhindert werden, um ein den Sicherheitsvorschriften entsprechendes, zuverlässiges Bauteil in Form eines auf beiden Seiten aufgeschnittenen Schlauchabschnitts zu erzeugen. Dieses Bauteil soll als so genannter Schrumpfschlauch verwendet werden. Die Wärmbehandlung soll in einer solchen Weise durchgeführt werden, dass die z.B. thermoplastischen Filamente und Fäden des textilen Schlauchs in dem wärmebeharadelten, begrenzten Flächenbereich, der als so genannter "geschweißter Balken" bezeichneter ist, leicht anschmelzen. Obwohl durch das Anbringen eines Trennpapiers im Inneren des Schlauchs verhindert werden soll, dass bei dem oberflächlichen Anschmelzen der äußeren Oberflächen der unteren und oberen Schlauchlagen ein Verkleben oder Verschweißen der gegenüberliegenden Innenwände des Schlauchs nicht stattfindet, bleibt die Gefahr, dass im Bereich der späteren Durchtrennung des Schlauchs liegende Fäden und Filamente durch Verkleben oder Verschweißen arretiert werden.In a product produced by such a method falling out of pieces of thread in the cutting edge region should be prevented in order to produce a safety component corresponding, reliable component in the form of a section cut open on both sides hose section. This component is to be used as a so-called shrink tubing. The heat treatment should be carried out in such a way that the e.g. thermoplastic filaments and filaments of the textile tube in the heat-needled, limited area, which is referred to as a so-called "welded bar", melt easily. Although the application of a release paper inside the tube to prevent that in the surface melting of the outer surfaces of the lower and upper tube layers gluing or welding of the opposite inner walls of the hose does not take place, the danger remains that in the later section of the Tubing threads and filaments are locked by gluing or welding.

Ein Verschmelzen oder Verkleben der Filamente und Fäden ist für ein als Schrumpfschlauch zu verwendendes Produkt jedoch unerwünscht, da die Fäden sich beim späteren Verarbeitungsprozess, d.h. während des Schrumpfprozesses, noch gegeneinander verschieben sollen. Miteinander verklebte oder verschmolzene Fäden und Filamente können daher den abschließenden Schrumpfprozess des Hohlschlauchs auf dem zu umschrumpfenden Objekt beeinträchtigen.However, fusion or bonding of the filaments and filaments is undesirable for a product to be used as a shrink tubing, since the filaments may be lost during later processing, i. during the shrinking process, yet to shift against each other. Fused together or fused threads and filaments can therefore affect the final shrinkage process of the hollow tube on the object to be shrunk.

Die EP 0 549 757 B1 behandelt ein Verfahren zur Herstellung von Etikettenbändern und nicht ein. Verfahren zur Herstellung von Schlauchabschnitten aus einem textilen Gewebeschlauch, bei dem in einem Arbeitsschritt die oberen und unteren Schlauchlagen in einem Wärmebehandlungsgerät so behandelt werden, dass die Fäden an den Enden der Schlauchabschnitte derart fixiert sind, dass sie im Schnittkanten nicht "herausfallen". Bei diesem bekannten Verfahren ist die Textilbahn im Bereich der späteren Schnittstellen mit in Bahnlängenrichtung verlaufenden Schmelz- und/oder Klebefäden versehen, die im Bereich der Press- und Wärmeeinrichtung schmelzen, wobei die Schmelzmasse in benachbarte Bereiche der Textilbahn eindiffundieren und dadurch die Fäden der Textilbahn im wesentlichen untrennbar miteinander verbinden.The EP 0 549 757 B1 deals with a process for producing label tapes and not one. Method for producing hose sections from a textile fabric hose, in which the upper and lower tube layers are treated in a heat treatment device in one step so that the threads are fixed at the ends of the tube sections so that they do not "fall out" in the cut edges. In this known method, the textile web is provided in the region of the later interfaces with running in the web length direction melting and / or adhesive threads that in the area melt the pressing and heating device, wherein the melt diffuse into adjacent areas of the textile web and thereby connect the threads of the textile web substantially inseparable.

Aus der WO 98/54393 A1 ist ein Verfahren zum Durchtrennen eines textilen gewebten Hohlschlauches bekannt, bei dem man an der Stelle, an der der Schlauch zu trennen ist, eine Klebematerial aufbringt, um im Bereich der Schnittstellen ein unkontrolliertes Heraustreten von Kett- oder Schussfäden aus dem Gewebe zu erschwerten. Das Aufbringen von Klebemittel im Trennungsbereich des Hohlschlauchs ergibt oft störende Veränderungen in der Textur der äußeren Oberfläche des Hoblschlauchs .From the WO 98/54393 A1 discloses a method for severing a textile woven hollow tube, wherein at the point at which the tube is to be separated, applying an adhesive material in order to make it difficult in the region of the interfaces uncontrolled emergence of warp or weft threads from the tissue. The application of adhesive in the separation area of the hollow tube often results in disturbing changes in the texture of the outer surface of the Hobl hose ,

Melliand Textilberichte, 4/1989, Seiten 263 - 265, behandeln den Einsatz von Ultraschallgeräten, in Form von Sonotroden zum Verschweißen und Schneiden von Textilmaterialien. Unter Ziffer (2) "Bearbeitung mehrerer Materiallagen" ist ein Verfahren beschrieben, bei dem durch Erweichung des Materials und einen entsprechenden Anpressdruck des Gegenwerkzeugs eine Verschweißung der Lagen im Bereich der Schnittkanten stattfindet. Eine derartige Verfahrensweise eignet sich nicht zur Herstellung von Schlauchabschnitten aus einem textilen Schlauch, bei dem die in einem Arbeitsschritt wärmebehandelt und gepressten zwei Lagen anschließend wieder getrennt werden.Melliand Textilberichte, 4/1989, pages 263 - 265, deal with the use of ultrasonic devices in the form of sonotrodes for welding and cutting textile materials. No. (2) "Processing of a plurality of material layers" describes a method in which, due to softening of the material and a corresponding contact pressure of the counter tool, welding of the layers takes place in the region of the cutting edges. Such a procedure is not suitable for the production of hose sections from a textile hose, in which the heat-treated and pressed in one step two layers are then separated again.

Die der Erfindung zugrunde liegende Problematik beruht darauf, dass ein flach aufgespulter textiler Schlauch abgespult und flach liegend orthogonal zur Längsrichtung in Abschnitte gleicher Länge geschnitten werden soll.The problem underlying the invention is based on the fact that a flat-wound textile hose unpacked and lying flat orthogonal to the longitudinal direction in sections of equal length to be cut.

Es wird ausgegangen von einem Schlauch, bestehend aus längs verlaufende, vorzugsweise aus Polyestermaterial bestehenden Multifilen (= Kettfäden) und quer, d.h. in Umfangsrichtung verlaufenden Monofilen (= Schussfaden = spätere Schrumpffäden).It is assumed that a hose consisting of longitudinally extending, preferably made of polyester material multifilaments (= warp threads) and transversely, i. in the circumferential direction running monofilaments (= weft thread = later shrink threads).

Die Multifil-Faserstränge haben die Eigenschaft, sich nach dem Schneiden aufzuspleißen. Die nebeneinander verlaufenden Multifil-Stränge, die den Monofil-Faden abwechselnd über- und unterlaufen, sind nicht miteinander verbunden. Bedingt durch den Web- und Aufspulprozess verläuft der Monofil-Strang im Gewebe in der Regel nicht orthogonal zur Schlauchlängsrichtung und nicht parallel zur Schnittkante und nicht geradlinig, sondern wellig/kurvig.The multifilament fiber strands have the property of splitting after cutting. The side-by-side multifilament strands, which alternately over- and under-run the monofilament, are not interconnected. Due to the weaving and winding process, the monofilament strand in the fabric generally does not run orthogonally to the tube longitudinal direction and not parallel to the cut edge and not straight, but wavy / curvy.

Wenn der Schlauch rechtwinklig zur Längsrichtung geschnitten wird, kann der Monifil-Faden ein bis mehrmals durchtrennt werden, so dass im Gewebe mehrere Monifil-Faden-Stücke vorliegen können. Der zur Längsrichtung quer verlaufende, verwebte Monofil-Faden ist an der seitlich und längs verlaufenden Naht einmal verknotet. Ansonsten wird der Monofil-Faden durch die Verflechtung/Verwebung mit den Multifil-Fasersträngen fest gehalten.If the tube is cut perpendicular to the longitudinal direction, the Monifil thread can be severed one to several times, so that there may be several Monifil thread pieces in the fabric. The longitudinally transverse, woven monofilament thread is knotted once at the side and longitudinal seam. Otherwise, the monofilament thread is held firmly by the entanglement / interweaving with the multifilament fiber strands.

Wird dieses Gewebe/Geflecht durch das orthogonal zur Schlaulängsrichtung verlaufende Schneiden aufgelöst, dann spleißen die elastischen Fäden der Multifil-Fasern auseinander und die nebeneinander liegenden und den Monofilfaden umschließenden Multifil-Faserstrände spreizen sich, so dass sich die Gewebestruktur und der Gewebeverband auflöst.When this tissue / braid is disintegrated by the cutting orthogonal to the crawl longitudinal direction, the elastic threads of the multifilament fibers splice and the multifilament fiber strands adjoining each other and surrounding the monofilament tend to spread, thereby dissolving the tissue structure and the tissue structure.

Dadurch kann sich der Monofil-Faden aus dem Gewebeverband lösen, so dass kurze Teilstücke des Monofil-Fadens an der Schnittkante herausfallen. Diese Schnittstücke verursachen Probleme und müssen verhindert oder entfernt werden.As a result, the monofilament thread can be released from the woven fabric, so that short sections of the monofilament thread fall out of the cut edge. These cuts cause problems and must be prevented or removed.

Durch das Öffnen der Multifil-Fasern und -Faserstränge franst die Schnittkante des Schlauches aus, was vermieden werden muss.By opening the multifilament fibers and fiber strands fringes the cutting edge of the hose, which must be avoided.

Die Erfindung geht aus von einem Verfahren gemäß dem Oberbegriff des Patentanspruchs 1.The invention is based on a method according to the preamble of patent claim 1.

Der Erfindung liegt die Aufgabe zugrunde, ein gegenüber den bekannten Verfahren verbessertes Verfahren zu schaffen, um zu erreichen, dass die Fäden im Bereich der Schlauchenden für den späteren Verarbeitungs- bzw. Schrumpfprozess ausreichend konditioniert sind.The invention has for its object to provide a comparison with the known methods improved method to achieve that the threads are sufficiently conditioned in the region of the hose ends for the subsequent processing or shrinking process.

Zur Lösung dieser Aufgabe ist erfindungsgemäß vorgesehen, dass man die beiden Schlauchlagen in einem Arbeitsschritt soweit erwärmt, dass die Gewebefäden unter Druck warm verformbar werden und sich im Bereich jeder der beiden Schlauchlagen bedingt haltbar ineinander verpressen und unter Bildung von Retentionen sich miteinander verhaken, und dass man zwischen die beiden Schlauchlagen ein vorzugsweise starres Trennelement einführt.To achieve this object, the invention provides that one heats the two tube layers in one step so far that the fabric threads are thermoformable under pressure and conditionally durable press each other in the region of each of the two tube layers and hooked together to form retention, and that one introduces a preferably rigid separating element between the two tube layers.

Die Pressbacken, die die Monofil-Fäden halten, so dass der Schlauch nicht schrumpft, pressen auch die Fäden der jeweils unteren und oberen Schlauchlagen ineinander, so dass die Fäden sich verhaken. Damit diese durch Kaltverpressen entstandenen Verhakungen = Retentionen sich nicht wieder lösen, müssen die Fäden bzw. Fasern ausreichend erwärmt werden, so dass die plastische Verformung der ineinander verpressten Fasern und die dadurch entstandenen Retentionen bedingt haltbar werden.The pressing jaws, which hold the monofilament threads so that the tube does not shrink, also press the threads of the respective lower and upper tube layers into each other so that the threads become entangled. So that these entanglements created by cold pressing = retention If they do not come loose again, the threads or fibers must be heated sufficiently, so that the plastic deformation of the fibers pressed into each other and the resulting retention are conditionally preserved.

Nach dem Verpressen des Gewebes muss das aus Kunststofffasern bestehende Gewebe abkühlen, so dass die Verpressung und die Retentionen bedingt dauerhaft haltbar werden.After the tissue has been pressed, the tissue consisting of synthetic fibers must cool down, so that the compression and the retention become conditionally durable.

Da bei dem Schlauch zwei Schlauch- bzw. Gewebelage übereinander liegen, die sich nicht bleibend miteinander verhaken dürfen (nur die Fasern jeder einzelnen Schlauch- bzw. Gewebelage dürfen sich verhaken), müssen beiden Lagen voneinander getrennt werden. Das Trennelement ist vorzugsweise wärmeleitend, muss hitzebeständig sein und darf sich nicht zersetzen, darf keinen Druck aufnehmen und der erweichte Kunststoff darf nicht daran haften.Since the hose has two layers of hose or fabric that are not allowed to get stuck together (only the fibers of each individual hose or fabric layer may get caught), both layers must be separated from each other. The separating element is preferably thermally conductive, must be heat-resistant and must not decompose, it must not absorb pressure and the softened plastic must not adhere to it.

Das Trennelement kann entweder im Anschluss an die Wärmebehandlung oder während der Wärmebehandlung im Wärmebehandlungsgerät wirksam sein.The separator may be effective either following the heat treatment or during the heat treatment in the heat treatment apparatus.

Das Pressen, das Erwärmen, das Abkühlen und das Schneiden in der Mitte des gepressten Bereiches muss schnell erfolgen, da das Verfahren für eine Serienteilfertigung mit hoher Taktfrequenz und Menge taugen soll.The pressing, heating, cooling and cutting in the middle of the pressed area must be done quickly, since the process for a series part production with high clock frequency and quantity is good.

Der problematische Verlauf der Monofil-Fäden lässt sich vorzugsweise durch abwechselndes Recken/Strecken und Entspannen rechwinklig zur Längsrichtung korrigieren, so dass beim Schneiden weniger Monofil-Faden-Stücke entstehen und die nach dem Schneiden entstandene Schnittkante weniger zum Ausfransen neigt.The problematic course of the monofilament threads can preferably be corrected by alternating stretching / stretching and relaxing at right angles to the longitudinal direction, so that fewer monofilament thread pieces are formed during cutting and the cut edge resulting after cutting is less prone to fraying.

Vorzugsweise wird ein Schlauch verwendet, dessen in Umfangsrichtung verlaufenden Fäden, insbesondere die Schussfäden, strahlungsvernetze Polyolefinfäden sind.Preferably, a hose is used whose circumferentially extending threads, in particular the weft threads, are radiation-crosslinked polyolefin threads.

Die Erfindung wird im Folgenden anhand der Zeichnung näher beschrieben.The invention will be described in more detail below with reference to the drawing.

In der Zeichnung ist eine schematische Darstellung der Warmbehandlungs- und Presszone dargestellt.

  • Figur 1 zeigt in schematischer Darstellung eine Vorrichtung zur Durchführung einer ersten Variante des erfindungsgemäßen Verfahrens;
  • Figur 2 zeigt eine schematische Darstellung der Warmbebandlungs- und Presszone zur Durchführung einer zweiten Variante des erfindungsgemäßen Verfahrens;
  • Figur 3 ist eine perspektivische Ansicht eines Trennelementes in vergrößerter Darstellung.
In the drawing, a schematic representation of the heat treatment and pressing zone is shown.
  • FIG. 1 shows a schematic representation of an apparatus for carrying out a first variant of the method according to the invention;
  • FIG. 2 shows a schematic representation of the hot stripper and press zone for carrying out a second variant of the method according to the invention;
  • FIG. 3 is a perspective view of a separating element in an enlarged view.

Als Wärmequelle wird bei den Vorrichtungen gemäß den Figuren 1 und 2 eine herkömmliche Ultraschall-Schweißmaschine verwendet, die innerhalb von Sekundenbruchteilen eine hohe Ultraschallenergie abzugeben vermag.As a heat source is in the devices according to the Figures 1 and 2 a conventional ultrasonic welding machine is used, which is able to deliver a high ultrasonic energy within fractions of a second.

Die erfindungsgemäß verwendete Maschine überträgt die Ultraschallenergie vorzugsweise mittels einer auf- und abbewegbaren Sonotrode 3, der als Wiederlager ein Amboss 4 gegenüberliegt. Diesem Wärmebehandlungsgerät 3, 4 wird in Richtung des Pfeiles f1 ein Schlauch 2 zugeführt, der zu zwei flächig übereinanderliegenden unteren und oberen Lagen 2.1, 2.2 zusammengelegt ist. Im Bereich des Wärmebehandlungsgerätes 3, 4 werden die Fäden der beiden Schlauchlagen 2.1 und 2.2 soweit erwärmt, dass die Gewebefäden unter Druckanwendung warm verformt und sich im Pressbereich a jeder der beiden Schlauchlagen bedingt haltbar ineinander verpressen bzw. verhaken.The machine used according to the invention preferably transmits the ultrasound energy by means of a sonotrode 3 which can be moved up and down, which as an abutment lies opposite an anvil 4. This heat treatment device 3, 4, a hose 2 is supplied in the direction of the arrow f1, which is merged into two flat superimposed lower and upper layers 2.1, 2.2. In the area of the heat treatment device 3, 4, the threads of the two tube layers 2.1 and 2.2 are heated to the extent that the fabric threads thermally deformed under pressure application and press in the pressing area a each of the two tube layers conditionally durable intermesh or hook.

Der Begriff "bedingt haltbar ineinander verpresst" entspricht damit nicht einem "dauerhaften haltbaren Verschmelzen" der Gewebefäden.The term "conditionally durable pressed into each other" thus does not correspond to a "durable durable fusion" of the fabric threads.

Um zu verhindern, dass die Fäden der beiden unteren und oberen Gewebelagen 2.1 und 2.2 bleibend miteinander verhakt bleiben, folgt gemäß einer ersten Ausführungsform der Erfindung auf das Wärmebehandlungsgerät 3, 4 ein vorzugsweise aus Metall bestehendes Trennelement 11, vorzugsweise in Form einer Kugel oder eines Walzenkörpers. Auf dieses Trennelement 11 folgt eine Trennelement-Rückhaltevorrichtung, bestehend aus einer vorzugsweise stationären Walze 14 und einer damit zusammenwirkenden, auf- und abbewegbaren Walze 13. Das Trennelement 11 wird zu Beginn eines Verfahrenszyklusses hinter dem Wärmebehandlungsgerät 3, 4 in das offene vorlaufende Schlauchende eingeführt, wobei die Trennelement-Rückhaltevorrichtung 13, 14 geöffnet wird, indem die obere bewegliche Walze 13 soweit angehoben wird, dass das Trennelement 11 in den Schlauch eingeschoben werden kam. Das vorzugsweise aus Metall bestehende Trennelement 11 hat entweder die Form einer Kugel oder eines Walzenkörpers mit sich vorzugsweise zu den Walzenenden hin verjüngenden Querschnitten und abgerundeten Enden. Die unteren und oberen Schlauchlagen 2.1 und 2.2 werden mittels des Trennelementes 11 im Anschluss an die Wärmebehandlungs- und Pressstufe "b" voneinander getrennt bzw. abgehoben, bevor der Schlauch 2 von den Walzen 13, 14 einer Schneidvorrichtung zugeführt, die gemäß Figur 1 aus einem auf- und abbewegbaren Schneidmesser 15 und einem gegenüberliegenden Gegenmesser (Amboss) 16 besteht.In order to prevent the threads of the two lower and upper fabric layers 2.1 and 2.2 remain permanently entangled, according to a first embodiment of the invention on the heat treatment device 3, 4 a preferably consisting of metal separator 11, preferably in the form of a ball or a roller body , This separating element 11 is followed by a separating element restraining device consisting of a preferably stationary roller 14 and a roller 13 which can be moved up and down in cooperation therewith. The separating element 11 is introduced at the beginning of a process cycle behind the heat treatment device 3, 4 into the open leading hose end, wherein the separator-retaining device 13, 14 is opened by the upper movable roller 13 is raised so far that the separator 11 came inserted into the tube. The preferably made of metal separator 11 has either the shape of a ball or a roller body with preferably to the Roll ends towards tapered cross sections and rounded ends. The lower and upper tube layers 2.1 and 2.2 are separated or lifted off from each other by means of the separating element 11 following the heat treatment and pressing step "b", before the tube 2 is fed from the rollers 13, 14 to a cutting device FIG. 1 consists of an up and down movable cutting blade 15 and an opposite counter knife (anvil) 16.

Bei dem in Figur 2 dargestellten System ist in den sich im Bereich des Wärmebehandlungsgerätes 3, 4 befindlichen Schlauchabschnitt gemäß einer zweiten Ausführungsform der Erfindung ein in Pressrichtung starres Trennelement 21 in Form einer flachen, vorzugsweise aus Metallblech bestehenden Trennzunge 21 eingeführt, wobei idealerweise die Ultraschallenergie der Sonotrode 3 nur im Schlauchmaterial und nicht im Trennelement 21 in Wärme umgewandelt wird. Dieses kann erfindungsgemäß durch die Materialauswahl für die Trennzunge, vorzugsweise Federstahlblech, und durch die entsprechende Anpassung der Maschincnparameter des Wärmebehandlungsgerätes 3, 4 erreicht werden. Das Metallblech der Trennzunge 21 ist vorzugsweise hitzebeständig und wärmeleitend und bei der aufzubringenden Presskraft nicht verformbar und soll nicht an den Filamenten haften.At the in FIG. 2 In the system shown in the area of the heat treatment device 3, 4 hose section according to a second embodiment of the invention in the pressing direction a rigid separator 21 in the form of a flat, preferably made of sheet metal separation tab 21 is introduced, ideally the ultrasonic energy of the sonotrode 3 only in the tubing and is not converted into heat in the separator 21. This can be achieved according to the invention by the material selection for the separating tongue, preferably spring steel sheet, and by the corresponding adaptation of Maschincnparameter the heat treatment device 3, 4. The metal sheet of the separating tongue 21 is preferably heat-resistant and thermally conductive and not deformable in the applied pressing force and should not adhere to the filaments.

Im Anschluss an die Wärmebehandlung im Bereich des Wärmebehandlungsgerätes 3, 4 wird der Schlauch 2 von Transportrollen einer Schneideinrichtung etwa der in Figur 1 dargestellten Schneideinrichtung zugeführt und zu Gewebeschlauchabschnitten 1 durchtrennt.Subsequent to the heat treatment in the area of the heat treatment device 3, 4, the hose 2 of transport rollers of a cutting device approximately in FIG. 1 supplied cutting device shown and severed to fabric tube sections 1.

Das in den Schlauch 2 eingezogene Trennelement 21 fungiert

  • einerseits als Trennmedium, damit sich die Gewebe bzw. die Fasern der unteren und der oberen Schlauchlagen 2.1; 2.2 nicht miteinander verpressen/verhaken und sich auch nicht wechselseitig verformen, und
  • andererseits als Übertragungsmedium für die Ultraschall-Schwingung und -Energie in die untere Schlauchlage, und
  • weiterhin als glatte, starre, sich - anders als bei einem Trennpapier - der Gewebestruktur nicht anpassende bzw. anschmiegende Widerlager-, Amboss- bzw. Andruckfläche, gegen die der erweichte Kunststoff der Fasern gepresst wird, so dass die unterschiedlichen Kunststoffe der beiden verwendeten, unterschiedlichen Fasern in die Hohlräume des Gewebes gepresst werden und sich dabei nach dem Erkalten derart dauerhaft verhaken.
The retracted into the tube 2 separator 21 acts
  • on the one hand as a separation medium, so that the tissues or fibers of the lower and upper tube layers 2.1; 2.2 do not press / hook together and also do not deform each other, and
  • on the other hand as a transmission medium for the ultrasonic vibration and energy in the lower tube layer, and
  • Furthermore, as a smooth, rigid, unlike a release paper - the fabric structure not adapting or conforming abutment, anvil or pressure surface against which the softened plastic of the fibers is pressed, so that the different plastics of the two used, different fibers be pressed into the cavities of the tissue and thereby hook so permanently after cooling.

Anstelle einer aus Schneidmesser 15 und Gegenmesser 16 bestehenden Kalt-Schneideinrichtung kann für beide Ausführungsformen der Erfindung auch eine Heiß-Schneideinrichtung vorgesehen sein, vorzugsweise in Form einer Laser-Schneideinrichtung, um im Bereich der Schnittstelle befindliche, ggf. noch freiliegende Faserenden in den Schlauchlagen 2.1, 2.2 miteinander zu verschweißen. Die abgetrennten Gewebeschlauchabschnitte 1 sind im Bereich ihrer Enden Abschnitte 1.1 und 1.2 mit miteinander verpressten und verhakten Faden-bzw. Faserenden versehen.Instead of a cutting knife 15 and counter knife 16 existing cold-cutting device may be provided for both embodiments of the invention, a hot-cutting device, preferably in the form of a laser cutting device to located in the interface, possibly still exposed fiber ends in the tube layers 2.1 , 2.2 to weld together. The separated fabric tube sections 1 are in the region of their ends sections 1.1 and 1.2 with each other pressed and hooked thread or. Provided fiber ends.

Um im Anschluss an das Wärmebehandlungsgerät 3, 4 mit dem Trennelement 11 ein zu sclmelles, "abruptes" Öffnen des Schlauchs zu vermeiden, hat das Trennelement 11 vorzugsweise einen sich in Richtung des Wärmebehandlungsgerätes 3, 4 relativ zu den beiden Schlauchlagen in der Dicke dünner werdenden Abschnitt, dessen Breite vorzugsweise ebenfalls in Richtung zum Wärmebehandlungsgerät hin kleiner wird.In order to avoid a too "abrupt" opening of the hose following the heat treatment device 3, 4 with the separating element 11, the separating element 11 preferably has a thickness that becomes thinner in the direction of the heat treatment device 3, 4 relative to the two hose layers Section whose width preferably also becomes smaller towards the heat treatment device.

So kann vorzugsweise gemäß Figur 3 an den Walzenkörper 11 ein entsprechend geformter zungenförmiger Abschnitt 11.1 angeformt sein.So can preferably according to FIG. 3 be formed on the roller body 11, a correspondingly shaped tongue-shaped portion 11.1.

Claims (12)

Verfahren zum Durchtrennen eines textilen Gewebeschlauchs (2), bestehend aus folgenden Schritten: a) Zusammenlegen des Schlauches (2) in zwei flächig übereinandergelegten Lagen, nämlich einer unteren Lage (2.1) und einer oberen Lage (2.2); b) Wärmebehandlung der beiden Lagen (2.1, 2.2) unter Druck in einem, bezogen auf die Schlauchlängsrichtung, begrenzten Flächenbereich des zusammengelegten Schlauchs in einem Wärmebehandlungsgerät; c) Durchtrennten des Schlauches in dem begrenzten Flächenbereich mittels einer Schneideinrichtung (15; 16), dadurch gekennzeichnet, dass man beide Schlauchlagen (2.1 und 2.2) in einem Arbeitsschritt mittels des Wännebehandlungsgerätes (3; 4) soweit erwärmt, dass die Gewebefäden unter Druckanwendung warm verformbar werden und sich im Bereich jeder der beiden Schlauchlagen (2.1, 2.2) bedingt haltbar ineinander vorpressen bzw. verhaken, und dass man zwischen die beiden Schlauchlagen (2.1; 2.2) ein starres Trennelement (11 bzw. 21) einführt.Process for cutting through a textile fabric hose (2), comprising the following steps: a) collapsing the tube (2) in two superimposed layers, namely a lower layer (2.1) and an upper layer (2.2); b) heat treatment of the two layers (2.1, 2.2) under pressure in a, relative to the tube longitudinal direction, limited surface area of the collapsed hose in a heat treatment apparatus; c) severing the tube in the limited surface area by means of a cutting device (15; 16), characterized in that one heats both tube layers (2.1 and 2.2) in one step by means of Wännebehandlungsgerätes (3; 4) that the fabric threads are thermoformed under pressure application and in the range of each of the two tube layers (2.1, 2.2) conditionally durable each other pre-press or hook, and that between the two tube layers (2.1, 2.2) introduces a rigid separation element (11 or 21). Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass die beiden Schlauchlagen (2.1, 2.2) mit einer solchen Presskraft miteinander verpresst werden, dass die elastische Verformung der ineinander verpressten Filamente und die dadurch entstandenen Retentionen haltbar werden.A method according to claim 1, characterized in that the two tube layers (2.1, 2.2) are pressed together with such a pressing force that the elastic deformation of the nested filaments and the resulting retentions are preserved. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass man das Trennelement (11) zwischen den Stufen (b) und (c) wirksam werden lässt.A method according to claim 1 or 2, characterized in that the separating element (11) between the steps (b) and (c) can be effective. Verfahren nach Anspruch 3, dadurch gekennzeichnet, dass man als Trennelement einen Walzenkörper (11), verwendet.A method according to claim 3, characterized in that a roller body (11) is used as the separating element. Verfahren nach Anspruch 3, dadurch gekennzeichnet, dass man als Trennelement eine Kugel verwendet.A method according to claim 3, characterized in that one uses as a separator a ball. Verfahren nach einem der Ansprüche 3 bis 5, dadurch gekennzeichet dass man das Trennelement (11) in Bewegungsrichtung (f1) des Schlauches (2) hinter dem Wärmebehandlungsgerät (3, 4) in das offene, vorlaufende Schlauchende einführt und das Trennelement während des Weiterlaufs des Schlauches (2) in Richtung zur Schneideeinrichtung innerhalb des Schlauchs mittels einer Trennelement-Rückhaltevorrichtung (13; 14) festhält.Method according to one of claims 3 to 5, characterized gekennzeichet that introduces the separating element (11) in the direction of movement (f1) of the hose (2) behind the heat treatment device (3, 4) in the open, leading end of the hose and the separator during the continuation of Hose (2) towards the cutting device within the tube by means of a separator-retaining device (13; 14) holds. Verfahren nach Anspruch 6, dadurch gekennzeichnet, dass man eine verstellbare Trennelement-Rückhaltevorrichtung (13; 14) verwendet, die zwischen einer das Einführen des Trennelements (11) in den Schlauch (2) ermöglichenden Öffnungsstellung und einer zweiten den Durchlauf des Trennelementes (11) verhindernden Rückhaltestellung beweglich ist.Method according to claim 6, characterized in that use is made of an adjustable separating element restraint device (13; 14) which permits the opening position between the insertion of the separating element (11) into the tube (2) and the passage of the separating element (11). preventing retention position is movable. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass während der Wärmebehandlung zwischen die beiden Schlauchlagen (2.1; 2.2) als Trennelement eine Trennzunge (21) aus Metallblech eingelegt wird, die wärmeleitend und hitzebeständig, bei der aufgewandten Presskraft nicht verformbar ist und nicht an den Filamenten der Schlauchlagen (2.1; 2.2) haftet.A method according to claim 1 or 2, characterized in that during the heat treatment between the two tube layers (2.1; 2.2) as a separating element a separating tongue (21) made of sheet metal is inserted, the heat-conducting and heat-resistant, in the applied pressing force is not deformable and not on adheres to the filaments of the tube layers (2.1, 2.2). Verfahren nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass man einen Schlauch (2) verwendet, dessen in Schlauchumfangsrichtung verlaufende Fäden nicht schmelzbare Fäden sind und dessen in Schlauchlängsrichtung verlaufende Fäden aus Polyestermaterial bestehen.Method according to one of claims 1 to 8, characterized in that one uses a hose (2) whose running in the tube circumferential direction threads are non-fusible threads and whose running in the tube longitudinal direction threads are made of polyester material. Vorrichtung zur Durchführung des Verfahrens nach einem der Ansprüche 1 bis 7, enthaltend ein Wärmebehandlungsgsgerät (3, 4) sowie eine Schneideinrichtung (15; 16), gekennzeichnet durch eine zwischen dem Wärmebehandlungsgerät (3, 4) und der Schneideinrichtung (15; 16) befindliche Rückhalteeinrichtung (13, 14) für ein in das Innere des Schlauches eingeführtes Trennelement (11).Apparatus for carrying out the method according to one of claims 1 to 7, comprising a heat treatment device (3, 4) and a cutting device (15; 16), characterized by a between the heat treatment device (3, 4) and the cutting device (15; Retaining device (13, 14) for a separating element (11) introduced into the interior of the hose. Vorrichtung nach Anspruch 8, dadurch gekennzeichnet, dass das Trennelement (11) die Fort eines Walzenkörpers mit im Bereich seiner Enden sich nach außen verjüngenden Querschnitten und abgerundeten Enden hat.Apparatus according to claim 8, characterized in that the separating element (11) has the Fort of a roller body with in the region of its ends outwardly tapering cross-sections and rounded ends. Vorrichtung nach Anspruch 11, dadurch gekennzeichnet, dass das Trennelement (11) einen in Richtung des Wärmebehandlungsgerätes (3, 4) sowohl in der Breite als in der Dicke abnehmenden zungenförmigen Abschnitt (11.1) aufweist.Apparatus according to claim 11, characterized in that the separating element (11) in the direction of the heat treatment apparatus (3, 4) both in the width and in the thickness decreasing tongue-shaped portion (11.1).
EP20100013622 2009-10-16 2010-10-14 Method and device for cutting a woven textile sleeve Not-in-force EP2312050B1 (en)

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DE102009049585A DE102009049585A1 (en) 2009-10-16 2009-10-16 Process for cutting through a tube made of textile materials

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2546407A2 (en) * 2011-07-12 2013-01-16 Dannewitz GmbH & Co. Kommanditgesellschaft Method and device for processing a tube moving lengthways, in particular textile fabric tube
CN105442295A (en) * 2015-12-30 2016-03-30 上海和鹰机电科技股份有限公司 Multi-layer cloth paving machine and multi-layer cloth paving system

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EP0549757B1 (en) 1991-07-18 1995-12-06 Textilma AG Process and installation for the manufacture of fabric tapes, in particular figured label tapes
JPH0959866A (en) * 1995-08-21 1997-03-04 Oshima Hosei:Kk Cutting of fabric and cut fabric
WO1998054393A1 (en) 1997-05-30 1998-12-03 Raychem Limited Cutting heat-shrinkable fabrics
US20070226971A1 (en) * 2006-04-03 2007-10-04 Takashi Tonooka End fray solution for textile structure
DE102006030583B3 (en) 2006-07-03 2007-10-04 Iprotex Gmbh & Co. Kg Cutting textile tubing in two comprises inserting a release paper inside the tubing, laying out the tubing so that it lies flat, superficially melting upper and lower layers in limited zones and cutting along these zones
JP2008214801A (en) * 2007-03-03 2008-09-18 Mitsuya:Kk Method for preventing fray of woven fabric

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0549757B1 (en) 1991-07-18 1995-12-06 Textilma AG Process and installation for the manufacture of fabric tapes, in particular figured label tapes
JPH0959866A (en) * 1995-08-21 1997-03-04 Oshima Hosei:Kk Cutting of fabric and cut fabric
WO1998054393A1 (en) 1997-05-30 1998-12-03 Raychem Limited Cutting heat-shrinkable fabrics
US20070226971A1 (en) * 2006-04-03 2007-10-04 Takashi Tonooka End fray solution for textile structure
DE102006030583B3 (en) 2006-07-03 2007-10-04 Iprotex Gmbh & Co. Kg Cutting textile tubing in two comprises inserting a release paper inside the tubing, laying out the tubing so that it lies flat, superficially melting upper and lower layers in limited zones and cutting along these zones
JP2008214801A (en) * 2007-03-03 2008-09-18 Mitsuya:Kk Method for preventing fray of woven fabric

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2546407A2 (en) * 2011-07-12 2013-01-16 Dannewitz GmbH & Co. Kommanditgesellschaft Method and device for processing a tube moving lengthways, in particular textile fabric tube
DE102011051753A1 (en) 2011-07-12 2013-01-17 Dannewitz Gmbh & Co. Kg Method and device for processing a hose moved in its longitudinal direction, in particular textile fabric hose
EP2546407A3 (en) * 2011-07-12 2014-08-06 Dannewitz GmbH & Co. Kommanditgesellschaft Method and device for processing a tube moving lengthways, in particular textile fabric tube
CN105442295A (en) * 2015-12-30 2016-03-30 上海和鹰机电科技股份有限公司 Multi-layer cloth paving machine and multi-layer cloth paving system
CN105442295B (en) * 2015-12-30 2018-01-05 长园和鹰智能科技有限公司 Multilayer layout machine and multi-compartment bed distribution system

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