EP0761857B1 - Pile warp control system for producing terry fabric on looms - Google Patents

Pile warp control system for producing terry fabric on looms Download PDF

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Publication number
EP0761857B1
EP0761857B1 EP96111877A EP96111877A EP0761857B1 EP 0761857 B1 EP0761857 B1 EP 0761857B1 EP 96111877 A EP96111877 A EP 96111877A EP 96111877 A EP96111877 A EP 96111877A EP 0761857 B1 EP0761857 B1 EP 0761857B1
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EP
European Patent Office
Prior art keywords
control system
tension
pile warp
terry
warp
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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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EP96111877A
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German (de)
French (fr)
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EP0761857A1 (en
Inventor
Walther Truyen
Adnan Dr. Wahhoud
Peter Czura
Hans-Dieter Dr. Scorl
Josef Hehle
Werner Birner
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Lindauer Dornier GmbH
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Lindauer Dornier GmbH
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Publication of EP0761857A1 publication Critical patent/EP0761857A1/en
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    • DTEXTILES; PAPER
    • D03WEAVING
    • D03DWOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D39/00Pile-fabric looms
    • D03D39/22Terry looms
    • D03D39/223Cloth control

Definitions

  • the invention relates to a control system for influencing the tension in a Pile chain and to provide pile warp threading rates for loop formation when producing terry fabrics on weaving machines according to the characteristics of The preamble of claim 1.
  • DE-PS 43 10 840 C1 a method and an apparatus for Influencing the tension in a pile of warp threads during the manufacture of Terry fabrics on weaving machines.
  • the dancer shaft assembly are designed to further increase the Efficiency of the weaving machine, i.e. the increase in speed, in dynamic Movement limits.
  • the limits of the dynamic movement sequence become clear, among other things, in that the pole chain guided over the dancer shaft is relieved in the period of the firing group attack in such a way that the pole chain lifts off the surface of the dancer shaft.
  • This fact and the existing twist of the warp threads then lead to crossings of the warp threads with one another.
  • the warp threads are twisted so that the pile formation is disturbed and warp thread breaks are not excluded.
  • the warp let-off device of the warp let-off device causes the pile warp mass to oscillate between the pile warp beam and the stop edge of the fabric, which likewise has a disadvantageous effect on the correct guidance of the pile chain.
  • the object of the invention is therefore to provide a control system for influencing the pile warp tension and for providing a pile warp thread delivery rate in the production of terry toweling, in which system for further increasing the performance of the weaving machine the integral functions of the dancer shaft can be detached from this and assigned to separate devices. Furthermore, it is an object of the invention to largely switch off the oscillation of the warp thread mass when lowering the chain and, in particular, to maintain a constant warp tension between the deflecting roller and the dancer shaft on the one hand and between the deflecting roller and the pile warp beam on the other hand while the weft groups are striking.
  • the object is achieved by firstly a control system one each on the rear weaving machine cheeks in a storage location rotatably arranged support member, in the vertically spaced from it Axis of rotation is supported a dancer shaft under tension and that at least one terry drive known per se for moving tissue with at least one of the support elements is operatively connected and thereby between the A synchronous movement of the terry drive and the movement of the dancer shaft There is a sequence of movements.
  • the dancer shaft is eccentric in the Support elements is mounted and thereby the shaft as such compared to the The axis of rotation of the support element can be deflected.
  • a deflection lever swings the dancer shaft so that a certain rate of the pole chain wrapping around the dancer wave, i.e. a so-called Pile warp thread release rate is released towards fabric formation without doing so relieve the pole chain from the chain tension so far that the pole chain is on it wraps around the outer surface of the dancer shaft.
  • the dancer shaft has at its free ends a spring tensioning mechanism adjustable in this way is linked to the fact that one on the dancer wave and thus on the pole chain Tension is exerted in balance to the required Basic tension of the pole chain is established.
  • the spring tension mechanism ensures its independent effectiveness of the terry drive that a length compensation of the Pole chain can be done.
  • a controlled working unit acts on each spring tensioning mechanism, preferably a pneumatically operated piston-cylinder unit, which is capable of closing the dancer shaft around its eccentrically arranged axis of rotation at a certain point in the weaving process, namely shortly before the weft group stop pivot that the pile warp provides a given pile warp delivery rate during the weft group attack while maintaining the warp tension. Due to the fact that when the spring retraction is partially relieved, the dancer shaft does not lift off the pile chain in the direction of the fabric, but only swivels about its axis of rotation, the desired advantageous effect is achieved that, although the necessary pile warp thread delivery rate is provided, a necessary amount of pile warp thread tension is obtained at the same time remains.
  • the spring tensioning mechanism is at least one deflecting lever which is firmly connected to the dancer shaft, at the free end portion of which one end of at least one tension spring is articulated at a pivot point, while the other end of the spring is connected to the support element Draw bolt attacks.
  • the tension bolt is also connected to a threaded spindle which is supported on the support element and which serves to adjust the spring tension.
  • the threaded spindle can be connected to an appropriate drive means, such as a motor drive.
  • warp tension measuring device detects the between the deflection roller and the chain tension to be maintained by the dancer wave.
  • the warp tension value and, if necessary, the Clamping manually via the threaded spindle or as part of a target / actual value comparison within the machine control the setpoint as an analog signal the motor connected to the threaded spindle for regulating the clamping force be fed.
  • the deflecting roller is connected to a controlled motor drive in order to feed the continuous pile chain, provided by the warp let-off of the pile warp beam, to the weaving process while maintaining a constant pile chain tension between the deflection roller and the dancer shaft. It is important here that the drive of the deflecting roller can also be controlled as a function of the tension values determined by the tension measuring device.
  • a pile warp beam 2 is rotatably mounted about an axis that is accommodated in the carrier 3 and is not visible.
  • the pole chain 4 is guided from the pile warp beam 2 in a manner known per se, including a known warp let-off device, not shown, to a motor-driven deflection roller 5 while passing a tension roller 7 which is position-changing in the direction of the double arrow 6 and is also mounted on the carrier 3.
  • the pole chain 4 subsequently arrives at a dancer shaft 8, which is connected in a first and a second support element 9 on the rear side cheeks 10 in a bearing 11 to a pin 12 and is rotatably supported.
  • the support element 9 is designed in the manner of an angle lever which has a vertical leg 9a and a horizontal leg 9b.
  • the pin 12 is firmly connected to the leg 9a.
  • each leg 9a Spaced from the central axis 12a, see also FIG. 2, of the pin 12, each leg 9a has a bearing point 13, in which a shaft 14, which is fixedly connected to the dancer shaft 8 and is arranged eccentrically to the central axis 8a of the dancer shaft 8, is rotatably received.
  • a coupling 16 is articulated, while the other end is connected to a terry drive 17 known per se.
  • the terry drive is used to control an oscillating displacement of the fabric 18 relative to the fixed attachment point 19, at which the weft group, not shown, is struck by the reed 22, which is connected to the sley 21 pivotally mounted about the axis of rotation 20.
  • the known terry toweling drive 17 consists of a terry toweling shaft 23, on which at least one eccentric 24 is arranged in a rotationally fixed manner, on the cam track of which a scanning roller 26a mounted in a control lever 26 abuts.
  • a first coupling 27 is articulated on the control lever 26 and is connected to a second coupling 29 via a connecting piece 28.
  • the coupling 29 is articulated on a lever 31 which is connected to a drawing-in roller 32 which oscillates the fabric 18 in the direction of the double arrow 30; this connection is not shown.
  • a basic warp beam 41 is rotatably mounted in the rear side cheek 10 of the weaving machine 1.
  • the basic chain 40 is guided from the basic warp beam 41 via a deflecting roller 42 and a match beam 43 to the shedding organs, which are indicated schematically here by a jacquard device 39 with harness cords 38 and retraction springs 37.
  • the coating roller 43 is received here for executing a so-called basic terry movement after terry drive 17 at one end of a double lever 47 loaded by a spring 47a.
  • the double lever 47 is mounted in the fulcrum 47b.
  • the fulcrum 47b is located in a one-armed lever 45 which can be pivoted about a machine-fixed axis 45a.
  • a coupling 44 is articulated, which is operatively connected to the control lever 26 of the terry drive 17.
  • a coupling 16 is articulated, which connects the support element 9 to the terry drive 17.
  • the terry movement is transmitted to the support element 9 in synchronism with the rotary drive of the eccentric 24 via the scanning roller 26a connected to the control lever 26.
  • a bearing point 13 is provided in the support element 9 at a vertical distance from the central axis 12a of the pin 12.
  • Such a shaft 14 extends with a necessary length dimension on both sides into the dancer shaft 8 designed as a tube.
  • a U-shaped deflection lever 48 is fixedly arranged on the outer circumference of the free end regions of the dancer shaft 8. On the deflection lever 48, one end of at least one tension spring or a tension spring assembly 49 engages on a connecting element 50. The other end of the spring 49 is articulated on a spring tensioning mechanism 51 provided on the horizontal leg 9b of the support element 9. The spring tensioning mechanism 51 is supported on the horizontal leg 9b of the support 9.
  • FIG. 3 shows the deflection position of the dancer shaft 8 and that of the support element 9 during the firing group attack by the reed 22 shown in FIG. 1.
  • the terry drive 17 here pivots the support element 9 about the pin 12 in the bearing 11 in the direction of the arrow 55 via the coupling 16.
  • the working unit 52 articulated in a fixed point 53 of the weaving machine which here, for example, is a double-acting, pneumatically operated Piston-cylinder unit is, in the direction of arrow 49, a pushing movement through the piston rod 52a onto the connecting element 50 of the articulation lever 48 which is fixedly connected to the dancer shaft 8.
  • the dancer shaft 8 pivots about the center axis 14a of the shaft 14 which is firmly connected to it and releases a warp thread dispensing rate 54. Due to the eccentric mounting of the dancer shaft 8 and the dancer shaft 8 which is only partially spring-loaded by the piston-cylinder unit 52, there is no disadvantageous lifting of the pole chain 4 from the circumference of the dancer shaft 8.
  • a pile warp tension measuring device 56 is integrated in FIG. 3 in the pile warp region between the deflection roller 5 and the dancer shaft 8.
  • the measuring device 56 is designed here, for example, as an absolute sensor, which communicates with the electronic control unit, not shown, of the weaving machine.
  • a comparison of the warp lowering is influenced by a comparison of the target and actual values of the warp tension in the control unit and thereby regulating the polket voltage in a manner known per se. Furthermore, in the event of a deviation from the warp tension setpoint, the tensioning force of the spring 46 can be adjusted by means of the spring tensioning mechanism 51.
  • a link guide 57 is provided in each leg 9b of the support element 9, in which a tension bolt 59 connected to a threaded spindle 58 is guided.
  • the tension bolt 59 has a side guide element 60 which has surface contact with the outer side surface of the leg 9b.
  • the free end of the threaded spindle 58 can be equipped with an electromotive actuator 61, as shown in FIG. 4.
  • FIG. 4 shows the mechanism 51 for tensioning the spring 46 which is connected to each support element 9.
  • a threaded spindle 58 is supported, for example, on an abutment 62 which is only partially shown and which is firmly connected to the support element 9.
  • the threaded spindle 58 is, for example, in threaded engagement with a screw part (not shown) equipped with an internal thread.
  • the screw part is part of the tension bolt 59, on which the spring 46 engages.
  • the free end of the threaded spindle 58 is connected here to a controllable electromotive actuator 61.
  • FIG. 5 shows the influence of the working unit 52 on the dancer shaft 8 to provide a pile warp threading rate 54 before the weft group stop of the reed 22 shown in FIG. 1.
  • the work unit is designed as a double-acting, pneumatically operated piston-cylinder unit.
  • the cylinder chamber 52b on the piston rod side and the cylinder chamber 52c on the piston side are each connected to a controlled quick exhaust valve 63, 64.
  • a working or output line 65, 66 leading to each valve 63, 64 leads via a corresponding controllable valve 67, 68 and via line 69 to a pressure source, not shown.
  • the deflection lever 48 By acting on the piston-side cylinder chamber 52c, the deflection lever 48, which is connected to the piston rod 52a, is deflected together with the dancer shaft 8, partially relieving the tensioning force of the spring 46, and a chain thread dispensing rate 54 is released to form a loop row in the course of the weft group attack.
  • a chain thread dispensing rate 54 As is known, no shot group formation takes place for border weaving. Accordingly, no warp thread delivery rate 54 may be provided.
  • the cylinder chamber 52b on the piston rod side is constantly pressurized for the time the border is raised or the movement of the piston rod 52a is at least blocked.

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

Description

Die Erfindung betrifft ein Steuersystem zur Beeinflussung der Zugspannung in einer Polkette und zur Bereitstellung von Polkettfadenabgaberaten zur Schlingenbildung beim Herstellen von Frottiergewebe auf Webmaschinen nach den Merkmalen des Oberbegriffs von Anspruch 1.The invention relates to a control system for influencing the tension in a Pile chain and to provide pile warp threading rates for loop formation when producing terry fabrics on weaving machines according to the characteristics of The preamble of claim 1.

Bekannt ist gem. DE-PS 43 10 840 C1 ein Verfahren und eine Vorrichtung zur Beeinflussung der Zugspannung in einer Polkettfadenschar beim Herstellen von Frottiergewebe auf Webmaschinen.According to DE-PS 43 10 840 C1 a method and an apparatus for Influencing the tension in a pile of warp threads during the manufacture of Terry fabrics on weaving machines.

Bei der Steuerung der Polkettspannung spielt der Spannbaum, auch als Tänzerwelle bezeichnet, und seine Steuerung eine zentrale Rolle. Die Baugruppe Tänzerwelle hat bei der Frottiergewebeherstellung die Aufgabe,

  • a) eine Rate von Polkettfadenlänge bei der sogenannten Warensteuerung bereitzustellen,
  • b) einen Kettlängenausgleich bei der Fachbildung zu gewährleisten,
  • c) eine Polketffadenabgaberate zur Bildung einer Schlingenreihe bei jedem Schußgruppenanschlag des Webblattes zu sichern und schließlich
  • d) dient die Momentansposition der schwingbeweglich angeordneten Tänzerwelle in Bezug auf die Position der stationären Umlenkwalze, die auf dem Wege der Polkette zwischen dem Polkettbaum und der Tänzerwelle angeordnet ist, der Ermittlung der Polkettspannung durch eine Kettspannungsmeßeinrichtung.
  • The spanning tree, also known as the dancer shaft, and its control play a central role in controlling the polket tension. The dancer shaft assembly has the task in the production of terry towels,
  • a) to provide a rate of pile warp thread length in the so-called goods control,
  • b) to ensure a warp length compensation in the technical training,
  • c) and finally secure a pile thread delivery rate to form a loop row with each weft group attack of the reed
  • d) the instantaneous position of the oscillatingly arranged dancer shaft in relation to the position of the stationary deflection roller, which is arranged on the path of the pole chain between the pole chain tree and the dancer shaft, is used to determine the polette tension by means of a warp tension measuring device.
  • Der Baugruppe Tänzerwelle sind im Hinblick auf eine weitere Steigerung der Leistungsfähigkeit der Webmaschine, sprich der Drehzahlerhöhung, im dynamischen Bewegungsablauf Grenzen gesetzt.The dancer shaft assembly are designed to further increase the Efficiency of the weaving machine, i.e. the increase in speed, in dynamic Movement limits.

    Hier spielen u.a. Fragen der Dimensionierung, der Anordnung und des Zusammenspiels der in dem Bewegungsablauf der Polkette nach dem Polkettbaum steuernden Elemente untereinander, wie insbesondere die Ausbildung der Umlenkwalze, die Anordnung der Tänzerwelle und deren synchrone Steuerung mit der Kettablaßeinrichtung und der Frottiereinrichtung eine entscheidende Rolle.Here, among other things, Dimensioning, arrangement and design issues Interaction of the movement of the pole chain after the pole chain tree controlling elements among themselves, such as in particular the training of Deflection roller, the arrangement of the dancer shaft and its synchronous control with the warp let-off device and the terry device play a decisive role.

    Die Grenzen des dynamischen Bewegungsablaufs werden u.a. dadurch deutlich, daß die über die Tänzerwelle geführte Polkette im Zeitraum des Schußgruppenanschlages derart entlastet wird, daß sich die Polkette von der Oberfläche der Tänzerwelle abhebt. Dieser Umstand und der vorhandene Drall der Kettfäden führen dann zu Verkreuzungen der Kettfäden untereinander. Es kommt zu Verkordelungen der Kettfäden, so daß die Florbildung gestört wird und Kettfadenbrüche nicht ausgeschlossen sind.
    Durch den Kettablaß der Kettablaßvorrichtung gerät die Polkettmasse zwischen dem Polkettbaum und der Anschlagkante des Gewebes in Schwingungen, was sich ebenfalls nachteilig auf die ordnungsgemäße Führung der Polkette auswirkt.
    The limits of the dynamic movement sequence become clear, among other things, in that the pole chain guided over the dancer shaft is relieved in the period of the firing group attack in such a way that the pole chain lifts off the surface of the dancer shaft. This fact and the existing twist of the warp threads then lead to crossings of the warp threads with one another. The warp threads are twisted so that the pile formation is disturbed and warp thread breaks are not excluded.
    The warp let-off device of the warp let-off device causes the pile warp mass to oscillate between the pile warp beam and the stop edge of the fabric, which likewise has a disadvantageous effect on the correct guidance of the pile chain.

    Aufgabe der Erfindung ist es daher, ein Steuersystem zur Beeinflussung der Polkettenspannung und zur Bereitstellung einer Polketffadenabgaberate bei der Herstellung von Frottiergewebe zu schaffen, in welchem System zur weiteren Leistungssteigerung der Webmaschine die integralen Funktionen der Tänzerwelle aus dieser herausgelöst und separaten Einrichtungen zugeordnet werden können.
    Ferner ist es Aufgabe der Erfindung, das Schwingen der Kettfadenmasse beim Ablassen der Kette weitgehend auszuschalten und insbesondere während des Anschlages der Schußgruppen zwischen der Umlenkwalze und der Tänzerwelle einerseits und zwischen der Umlenkwalze und dem Polkettbaum andererseits eine konstante Kettspannung aufrechtzuerhalten.
    The object of the invention is therefore to provide a control system for influencing the pile warp tension and for providing a pile warp thread delivery rate in the production of terry toweling, in which system for further increasing the performance of the weaving machine the integral functions of the dancer shaft can be detached from this and assigned to separate devices.
    Furthermore, it is an object of the invention to largely switch off the oscillation of the warp thread mass when lowering the chain and, in particular, to maintain a constant warp tension between the deflecting roller and the dancer shaft on the one hand and between the deflecting roller and the pile warp beam on the other hand while the weft groups are striking.

    Erfindungsgemäß wird die Aufgabe gelöst durch erstens ein Steuersystem aus jeweils einem an den hinteren Webmaschinenwangen in einer Lagerstelle drehbeweglich angeordneten Stützelement, in dem vertikal beabstandet von seiner Drehachse eine unter einer Spannkraft stehende Tänzerwelle gelagert ist und daß wenigstens ein an sich bekannter Frottierantrieb zur Gewebeverschiebung mit wenigstens einem der Stützelemente wirkverbunden ist und dadurch zwischen der Bewegung des Frottierantriebes und der Bewegung der Tänzerwelle ein synchroner Bewegungsablauf besteht.According to the invention, the object is achieved by firstly a control system one each on the rear weaving machine cheeks in a storage location rotatably arranged support member, in the vertically spaced from it Axis of rotation is supported a dancer shaft under tension and that at least one terry drive known per se for moving tissue with at least one of the support elements is operatively connected and thereby between the A synchronous movement of the terry drive and the movement of the dancer shaft There is a sequence of movements.

    Erfindungswesentlich ist zweitens, daß die Tänzerwelle exzentrisch in den Stützelementen gelagert ist und dadurch die Welle als solche gegenüber der Drehachse des Stützelementes auslenkbar ist. Eine solche Auslenkung gewährleistet, daß bei Beaufschlagung eines mit der Tänzerwelle fest verbundenen Auslenkhebels die Tänzerwelle derart ausschwenkt, daß eine bestimmte Rate der die Tänzerwelle umschlingenden Polkette, also eine sogenannte Polkettfadenabgaberate, in Richtung Gewebebildung freigegeben wird, ohne dabei die Polkette so weit von der Kettspannung zu entlasten, daß die Polkette auf der sie umschlingenden Mantelfläche der Tänzerwelle abhebt.Secondly, it is essential to the invention that the dancer shaft is eccentric in the Support elements is mounted and thereby the shaft as such compared to the The axis of rotation of the support element can be deflected. Such a deflection ensures that when one is firmly connected to the dancer shaft Deflection lever swings the dancer shaft so that a certain rate of the pole chain wrapping around the dancer wave, i.e. a so-called Pile warp thread release rate is released towards fabric formation without doing so relieve the pole chain from the chain tension so far that the pole chain is on it wraps around the outer surface of the dancer shaft.

    Erfindungswesentlich ist ferner, daß die Tänzerwelle an ihren freien Enden mit einem die Kettspannung einstellbaren Federspannmechanismus derart wirkverbunden ist, daß auf die Tänzerwelle und damit auf die Polkette eine Spannkraft ausgeübt wird, die im Gleichgewicht zu der erforderlichen Grundspannung der Polkette steht.It is also essential to the invention that the dancer shaft has at its free ends a spring tensioning mechanism adjustable in this way is linked to the fact that one on the dancer wave and thus on the pole chain Tension is exerted in balance to the required Basic tension of the pole chain is established.

    Der Federspannmechanismus gewährleistet durch seine unabhängige Wirksamkeit von dem Frottierantrieb, daß während der Webfachbildung ein Längenausgleich der Polkette erfolgen kann.The spring tension mechanism ensures its independent effectiveness of the terry drive that a length compensation of the Pole chain can be done.

    Des weiteren ist erfindungswesentlich, daß an jedem Federspannmechanismus eine gesteuerte Arbeitseinheit angreift, vorzugsweise eine pneumatisch betriebene Kolben-Zylindereinheit, die im Stande ist, zu einem bestimmten Zeitpunkt innerhalb des Webprozesses, nämlich kurz vor dem Schußgruppenanschlag, die Tänzerwelle um ihre exzentrisch angeordnete Drehachse derart zu schwenken, daß die Polkette bei aufrechterhaltener Polkettspannung eine vorgegebene Polketffadenabgaberate während des Schußgruppenanschlages zur Verfügung stellt.
    Aufgrund der Tatsache, daß die Tänzerwelle bei Teilentlastung des Federrückzuges nicht von der Polkette in Richtung Gewebe abhebt, sondern lediglich um ihre Drehachse schwenkt, wird die angestrebte vorteilhafte Wirkung erzielt, daß, obwohl die notwendige Polketffadenabgaberate bereitgestellt wird, gleichzeitig ein notwendiges Maß an Polkettfadenspannung erhalten bleibt.
    Furthermore, it is essential to the invention that a controlled working unit acts on each spring tensioning mechanism, preferably a pneumatically operated piston-cylinder unit, which is capable of closing the dancer shaft around its eccentrically arranged axis of rotation at a certain point in the weaving process, namely shortly before the weft group stop pivot that the pile warp provides a given pile warp delivery rate during the weft group attack while maintaining the warp tension.
    Due to the fact that when the spring retraction is partially relieved, the dancer shaft does not lift off the pile chain in the direction of the fabric, but only swivels about its axis of rotation, the desired advantageous effect is achieved that, although the necessary pile warp thread delivery rate is provided, a necessary amount of pile warp thread tension is obtained at the same time remains.

    Erfindungswesentlich ist darüber hinaus, daß es sich bei dem Federspannmechanismus um wenigstens einen mit der Tänzerwelle fest verbundenen Auslenkhebel handelt, an dessen freiem Endabschnitt das eine Ende wenigstens einer Zugfeder an einer Anlenkstelle angelenkt ist, während das andere Federende an einem mit dem Stützelement in Verbindung stehenden Zugbolzen angreift. Der Zugbolzen steht ferner mit einer sich am Stützelement abstützenden Gewindespindel in Verbindung, die der Einstellung der Federzugspannung dient.
    Zur Einstellung der erforderlichen Federspannkraft kann die Gewindespindel mit einem entsprechenden Antriebsmittel wie z.B. mit einem motorischen Antrieb verbunden sein.
    It is also essential to the invention that the spring tensioning mechanism is at least one deflecting lever which is firmly connected to the dancer shaft, at the free end portion of which one end of at least one tension spring is articulated at a pivot point, while the other end of the spring is connected to the support element Draw bolt attacks. The tension bolt is also connected to a threaded spindle which is supported on the support element and which serves to adjust the spring tension.
    To set the required spring tension, the threaded spindle can be connected to an appropriate drive means, such as a motor drive.

    Eine im Bereich der Polkette zwischen der Tänzerwelle und der Umlenkwelle eingeordnete Kettspannungsmeßeinrichtung erfaßt die zwischen der Umlenkwalze und der Tänzerwelle aufrechtzuerhaltende Kettspannung. Über eine entsprechende optische Anzeige kann der Kettspannungswert entnommen und gegebenenfalls die Spannung manuell über die Gewindespindel oder im Rahmen eines Soll-Istwert-Vergleiches innerhalb der Maschinensteuerung der Sollwert als analoges Signal dem mit der Gewindespindel verbundenen Motor zur Spannkraftregulierung zugeführt werden.One in the area of the pole chain between the dancer shaft and the deflection shaft arranged warp tension measuring device detects the between the deflection roller and the chain tension to be maintained by the dancer wave. About a corresponding one the warp tension value and, if necessary, the Clamping manually via the threaded spindle or as part of a target / actual value comparison within the machine control the setpoint as an analog signal the motor connected to the threaded spindle for regulating the clamping force be fed.

    Schließlich ist es erfindungswesentlich, daß die Umlenkwalze mit einem gesteuerten Motorantrieb in Verbindung steht, um die kontinuierliche, von dem Kettablaß des Polkettbaumes bereitgestellte Polkette unter Aufrechterhaltung einer konstanten Polkettspannung zwischen der Umlenkwalze und der Tänzerwelle dem Webprozeß zuzuführen.
    Von Bedeutung ist hierbei, daß der Antrieb der Umlenkwalze ebenfalls in Abhängigkeit der durch die Spannungsmeßeinrichtung ermittelten Spannungswerte gesteuert werden kann.
    Finally, it is essential to the invention that the deflecting roller is connected to a controlled motor drive in order to feed the continuous pile chain, provided by the warp let-off of the pile warp beam, to the weaving process while maintaining a constant pile chain tension between the deflection roller and the dancer shaft.
    It is important here that the drive of the deflecting roller can also be controlled as a function of the tension values determined by the tension measuring device.

    Vorteilhaft wirkt sich damit aus, daß die motorgesteuerte Umlenkwalze Einfluß auf die Kettspannung sowohl im Polkettenstrang zwischen dem Polkettbaum und der Umlenkwalze als auch auf dem Polkettenstrang zwischen der Umlenkwalze und der Tänzerwelle nehmen kann. Eine solche Einflußnahme unterdrückt das Schwingen der Polkette in den erwähnten Abschnitten.This has an advantageous effect that the motor-controlled deflection roller influences the warp tension both in the pile chain strand between the pile warp beam and the Deflection roller as well as on the pole chain strand between the deflection roller and the Can take a wave of dancers. Such influence suppresses swinging the pole chain in the mentioned sections.

    Weitere Merkmale der Erfindung gehen aus der nachfolgenden Beschreibung der Ausführungsbeispiele hervor.Further features of the invention will become apparent from the following description of the Embodiments emerge.

    In den Zeichnungen zeigen:

    Fig. 1:
    eine Seitenansicht der Webmaschine in schematischer Darstellung mit dem Steuersystem,
    Fig. 2:
    den kettbaumseitigen Teil der Webmaschine mit dem Steuersystem in perspektivischer Darstellung,
    Fig. 3:
    einen Teil aus der Seitenansicht gem. Fig. 1 mit der Tänzerwelle im Stadium der Bereitstellung einer Polketffadenabgaberate,
    Fig. 4:
    den Federspannmechanismus mit einem motorischen Antrieb zur Einstellung der Federrückzugskraft,
    Fig. 5:
    die pneumatisch gesteuerte Arbeitseinheit in Verbindung mit dem Federspannmechanismus und deren schematisch dargestellte Steuerung.
    The drawings show:
    Fig. 1:
    2 shows a side view of the weaving machine in a schematic representation with the control system,
    Fig. 2:
    the warp beam side part of the loom with the control system in perspective,
    Fig. 3:
    a part from the side view. 1 with the dancer shaft in the stage of providing a warp thread delivery rate,
    Fig. 4:
    the spring tensioning mechanism with a motorized drive to adjust the spring return force,
    Fig. 5:
    the pneumatically controlled work unit in connection with the spring tensioning mechanism and its schematically shown control.

    In Figur 1 ist in der Hochlage an der Webmaschine 1 ein Polkettbaum 2 um eine in dem Träger 3 aufgenommene und nicht sichtbare Achse drehbar gelagert.
    Von dem Polkettbaum 2 wird in an sich bekannter Weise unter Einbeziehung einer bekannten, nicht dargestellten Kettablaßvorrichtung die Polkette 4 zu einer motorgetriebenen Umlenkwalze 5 unter Passieren einer in Richtung des Doppelpfeils 6 positionsveränderlichen Spannwalze 7, die ebenfalls am Träger 3 gelagert ist, geführt.
    In FIG. 1, in the high position on the weaving machine 1, a pile warp beam 2 is rotatably mounted about an axis that is accommodated in the carrier 3 and is not visible.
    The pole chain 4 is guided from the pile warp beam 2 in a manner known per se, including a known warp let-off device, not shown, to a motor-driven deflection roller 5 while passing a tension roller 7 which is position-changing in the direction of the double arrow 6 and is also mounted on the carrier 3.

    Die Polkette 4 gelangt nachfolgend zu einer Tänzerwelle 8, die in einem ersten und einem zweiten Stützelement 9 an den hinteren Seitenwangen 10 in einer Lagerstelle 11 mit einem Zapfen 12 verbunden und drehbeweglich gelagert ist.
    Das Stützelement 9 ist in Art eines Winkelhebels ausgebildet, der einen vertikalen Schenkel 9a und einen horizontalen Schenkel 9b besitzt.
    Im Bereich des freien Endes ist am Schenkel 9a der Zapfen 12 fest verbunden.
    Beabstandet von der Mittenachse 12a, siehe auch Fig. 2, des Zapfens 12 weist jeder Schenkel 9a eine Lagerstelle 13 auf, in der eine mit der Tänzerwelle 8 fest verbundene und exzentrisch zur Mittenachse 8a der Tänzerwelle 8 angeordnete Welle 14 drehbeweglich aufgenommen ist.
    In einer oberhalb der Lagerstelle 13 vorhandenen Anlenkstelle 15, die hier als Langloch 9c, siehe auch Figur 3, ausgebildet ist, ist das eine Ende einer Koppel 16 angelenkt, während das andere Ende mit einem an sich bekannten Frottierantrieb 17 verbunden ist.
    Der Frottierantrieb dient zur Steuerung einer oszillierenden Verschiebung des Gewebes 18 relativ zum festliegenden Anschlagpunkt 19, an welchem die nicht dargestellte Schußgruppe durch das Webblatt 22, welches mit der um die Drehachse 20 schwenkbar gelagerten Weblade 21 verbunden ist, angeschlagen wird.
    The pole chain 4 subsequently arrives at a dancer shaft 8, which is connected in a first and a second support element 9 on the rear side cheeks 10 in a bearing 11 to a pin 12 and is rotatably supported.
    The support element 9 is designed in the manner of an angle lever which has a vertical leg 9a and a horizontal leg 9b.
    In the area of the free end, the pin 12 is firmly connected to the leg 9a.
    Spaced from the central axis 12a, see also FIG. 2, of the pin 12, each leg 9a has a bearing point 13, in which a shaft 14, which is fixedly connected to the dancer shaft 8 and is arranged eccentrically to the central axis 8a of the dancer shaft 8, is rotatably received.
    In an articulation point 15 present above the bearing point 13, which is designed here as an elongated hole 9c, see also FIG. 3, one end of a coupling 16 is articulated, while the other end is connected to a terry drive 17 known per se.
    The terry drive is used to control an oscillating displacement of the fabric 18 relative to the fixed attachment point 19, at which the weft group, not shown, is struck by the reed 22, which is connected to the sley 21 pivotally mounted about the axis of rotation 20.

    Der bekannte Frottierantrieb 17 besteht aus einer Frottierwelle 23, auf der drehfest wenigstens ein Exzenter 24 angeordnet ist, auf dessen Kurvenbahn eine in einen Steuerhebel 26 gelagerte Abtastrolle 26a abtastend anliegt. An dem Steuerhebel 26 ist eine erste Koppel 27 angelenkt, die über ein Verbindungsstück 28 mit einer zweiten Koppel 29 verbunden ist.
    Die Koppel 29 ist an einem Hebel 31 angelenkt, der mit einer das Gewebe 18 oszillierend in Richtung des Doppelpfeiles 30 bewegenden Einziehwalze 32 in Verbindung steht; diese Verbindung ist nicht dargestellt.
    The known terry toweling drive 17 consists of a terry toweling shaft 23, on which at least one eccentric 24 is arranged in a rotationally fixed manner, on the cam track of which a scanning roller 26a mounted in a control lever 26 abuts. A first coupling 27 is articulated on the control lever 26 and is connected to a second coupling 29 via a connecting piece 28.
    The coupling 29 is articulated on a lever 31 which is connected to a drawing-in roller 32 which oscillates the fabric 18 in the direction of the double arrow 30; this connection is not shown.

    Zur Lieferung der Grundkette 40 ist ein Grundkettbaum 41 drehend in der hinteren Seitenwange 10 der Webmaschine 1 gelagert.
    Die Grundkette 40 wird von dem Grundkettbaum 41 über eine Umlenkwalze 42 und einem Streichbaum 43 zu den Fachbildeorganen, die hier andeutungsweise durch eine Jacquardeinrichtung 39 mit Harnischschnüren 38 und Rückzugsfedern 37 schematisch dargestellt sind, geführt.
    Die Streichwalze 43 ist hier zur Ausführung einer sogenannten Grundfrottierbewegung nach Frottierantrieb 17 an einem Ende eines von einer Feder 47a belasteten Doppelhebels 47 aufgenommen.
    Der Doppelhebel 47 ist im Drehpunkt 47b gelagert.
    Der Drehpunkt 47b befindet sich in einem einarmigen Hebel 45, der um eine maschinenfeste Achse 45a schwenkbar ist. Am freien Ende des Hebels 45 ist eine Koppel 44 angelenkt, die mit dem Steuerhebel 26 des Frottierantriebes 17 wirkverbunden ist.
    To supply the basic chain 40, a basic warp beam 41 is rotatably mounted in the rear side cheek 10 of the weaving machine 1.
    The basic chain 40 is guided from the basic warp beam 41 via a deflecting roller 42 and a match beam 43 to the shedding organs, which are indicated schematically here by a jacquard device 39 with harness cords 38 and retraction springs 37.
    The coating roller 43 is received here for executing a so-called basic terry movement after terry drive 17 at one end of a double lever 47 loaded by a spring 47a.
    The double lever 47 is mounted in the fulcrum 47b.
    The fulcrum 47b is located in a one-armed lever 45 which can be pivoted about a machine-fixed axis 45a. At the free end of the lever 45 a coupling 44 is articulated, which is operatively connected to the control lever 26 of the terry drive 17.

    In Figur 2 werden weitere erfindungsgemäßen Merkmale dargestellt.In Figure 2 further features of the invention are shown.

    Jeweils ein Stützelement 9, bestehend aus dem horizontalen Schenkel 9b und dem vertikalen Schenkel 9a, ist durch den Zapfen 12 an der linken und rechten Seitenwange 10 in einer Lagerstelle 11 drehbeweglich aufgenommen.
    In einer Lagerstelle 15 des vertikalen Schenkels 9a ist eine Koppel 16 angelenkt, die das Stützelement 9 mit dem Frottierantrieb 17 verbindet. Damit wird synchron zum Drehantrieb des Exzenters 24 über die mit dem Steuerhebel 26 verbundene Abtastrolle 26a die Frottierbewegung auf das Stützelement 9 übertragen.
    In dem Stützelement 9 ist vertikal beabstandet zur Mittenachse 12a des Zapfens 12 eine Lagerstelle 13 vorgesehen.
    In der Lagerstelle 13 ist eine fest mit der Tänzerwelle 8 verbundene Welle 14 exzentrisch zur Mittenachse 8a der Tänzerwelle 8 drehbeweglich um die Mittenachse 14a gelagert.
    Eine solche Welle 14 reicht mit einem notwendigen Längenmaß beidseitig in die als Rohr ausgebildete Tänzerwelle 8 hinein.
    An den freien Endbereichen der Tänzerwelle 8 ist am Außenumfang ein U-förmig ausgebildeter Auslenkhebel 48 fest angeordnet.
    An dem Auslenkhebel 48 greift das eine Ende wenigstens einer Zugfeder oder eines Zugfederpaketes 49 an einem Verbindungselement 50 an. Das andere Ende der Feder 49 ist an einem am horizontalen Schenkel 9b des Stützelementes 9 vorhandenen Federspannmechanismus 51 angelenkt. Der Federspannmechanismus 51 stützt sich an den horizontalen Schenkel 9b der Stütze 9 ab. Damit wird erreicht, obwohl die Übertragung der Steuerbewegung des Frottierantriebes 17 über die Koppel 16 ein Auslenken des Stützelementes 9 im Sinne einer Entlastung der Polkette erfolgt, daß die die Polkette 4 spannende Tänzerwelle 8 erst unmittelbar vor dem Blattanschlag zur Ausführung eines Schußgruppenanschlages eine Polkettfadenabgaberate bei aufrechterhaltener Polkettfadenspannung gesteuert bereit hält.
    Each support element 9, consisting of the horizontal leg 9b and the vertical leg 9a, is rotatably received by the pin 12 on the left and right side cheeks 10 in a bearing 11.
    In a bearing 15 of the vertical leg 9a, a coupling 16 is articulated, which connects the support element 9 to the terry drive 17. Thus, the terry movement is transmitted to the support element 9 in synchronism with the rotary drive of the eccentric 24 via the scanning roller 26a connected to the control lever 26.
    A bearing point 13 is provided in the support element 9 at a vertical distance from the central axis 12a of the pin 12.
    In the bearing 13, a shaft 14, which is fixedly connected to the dancer shaft 8, is rotatably mounted eccentrically to the center axis 8a of the dancer shaft 8 about the center axis 14a.
    Such a shaft 14 extends with a necessary length dimension on both sides into the dancer shaft 8 designed as a tube.
    A U-shaped deflection lever 48 is fixedly arranged on the outer circumference of the free end regions of the dancer shaft 8.
    On the deflection lever 48, one end of at least one tension spring or a tension spring assembly 49 engages on a connecting element 50. The other end of the spring 49 is articulated on a spring tensioning mechanism 51 provided on the horizontal leg 9b of the support element 9. The spring tensioning mechanism 51 is supported on the horizontal leg 9b of the support 9. It is thus achieved, although the transfer of the control movement of the terry drive 17 via the coupling 16, a deflection of the support element 9 in the sense of relieving the load on the pile chain, that the pile chain 8 exciting the pile chain 8 only immediately before the blade stop for executing a weft group stop a pile warp thread delivery rate while being maintained Keeps warp thread tension controlled ready.

    Figur 3 zeigt die Auslenkposition der Tänzerwelle 8 und die des Stützelementes 9 während des Schußgruppenanschlages durch das in Figur 1 gezeigte Webblatt 22.
    Der Frottierantrieb 17 verschwenkt hier über die Koppel 16 das Stützelement 9 um den Zapfen 12 in der Lagerstelle 11 in Richtung des Pfeiles 55. Gleichzeitig erfolgt durch Beaufschlagung der in einem Festpunkt 53 der Webmaschine angelenkten Arbeitseinheit 52, die hier z.B. eine doppelt wirkende, pneumatisch betriebene Kolben-Zylindereinheit ist, in Richtung des Pfeils 49 eine Schubbewegung durch die Kolbenstange 52a auf das Verbindungselement 50 des fest mit der Tänzerwelle 8 verbundenen Anlenkhebels 48.
    Dabei schwenkt die Tänzerwelle 8 um die Mittenachse 14a der fest mit ihr verbundenen Welle 14 und gibt eine Polketffadenabgaberate 54 frei.
    Aufgrund der exzentrischen Lagerung der Tänzerwelle 8 und der nur teilweise durch die Kolben-Zylindereinheit 52 federentlasteten Tänzerwelle 8 kommt es nicht zu dem nachteiligen Abheben der Polkette 4 vom Umfang der Tänzerwelle 8.
    Wie in der Figur 1 ist in Figur 3 im Polkettbereich zwischen der Umlenkwalze 5 und der Tänzerwelle 8 eine Polkettfaden-Spannungsmeßeinrichtung 56 integriert.
    Die Meßeinrichtung 56 ist hier z.B. als Absolut-Sensor ausgebildet, der signalübertragend mit der nicht dargestellten elektronischen Steuereinheit der Webmaschine in Verbindung steht.
    FIG. 3 shows the deflection position of the dancer shaft 8 and that of the support element 9 during the firing group attack by the reed 22 shown in FIG. 1.
    The terry drive 17 here pivots the support element 9 about the pin 12 in the bearing 11 in the direction of the arrow 55 via the coupling 16. At the same time, the working unit 52 articulated in a fixed point 53 of the weaving machine, which here, for example, is a double-acting, pneumatically operated Piston-cylinder unit is, in the direction of arrow 49, a pushing movement through the piston rod 52a onto the connecting element 50 of the articulation lever 48 which is fixedly connected to the dancer shaft 8.
    The dancer shaft 8 pivots about the center axis 14a of the shaft 14 which is firmly connected to it and releases a warp thread dispensing rate 54.
    Due to the eccentric mounting of the dancer shaft 8 and the dancer shaft 8 which is only partially spring-loaded by the piston-cylinder unit 52, there is no disadvantageous lifting of the pole chain 4 from the circumference of the dancer shaft 8.
    As in FIG. 1, a pile warp tension measuring device 56 is integrated in FIG. 3 in the pile warp region between the deflection roller 5 and the dancer shaft 8.
    The measuring device 56 is designed here, for example, as an absolute sensor, which communicates with the electronic control unit, not shown, of the weaving machine.

    Durch einen Soll-Istwert-Vergleich der Kettspannung in der Steuereinheit wird die Polkettablaßsteuerung beeinflußt
    und dadurch in an sich bekannter Weise eine Regelung der Polkettspannung vorgenommen.
    Ferner kann bei Abweichung von dem Kettspannungssollwert eine regulierende Einstellung der Spannkraft der Feder 46 mittels des Federspannmechanismus 51 erfolgen.
    Dazu ist in jedem Schenkel 9b des Stützelementes 9 eine Kulissenführung 57 vorhanden, in der ein mit einer Gewindespindel 58 verbundener Zugbolzen 59 geführt ist.
    Der Zugbolzen 59 besitzt ein Seitenführungselement 60, das mit der äußeren Seitenfläche des Schenkels 9b Flächenkontakt besitzt.
    Das freie Ende der Gewindespindel 58 kann mit einem elektromotorischen Stellantrieb 61 ausgerüstet sein, wie in Figur 4 dargestellt.
    A comparison of the warp lowering is influenced by a comparison of the target and actual values of the warp tension in the control unit
    and thereby regulating the polket voltage in a manner known per se.
    Furthermore, in the event of a deviation from the warp tension setpoint, the tensioning force of the spring 46 can be adjusted by means of the spring tensioning mechanism 51.
    For this purpose, a link guide 57 is provided in each leg 9b of the support element 9, in which a tension bolt 59 connected to a threaded spindle 58 is guided.
    The tension bolt 59 has a side guide element 60 which has surface contact with the outer side surface of the leg 9b.
    The free end of the threaded spindle 58 can be equipped with an electromotive actuator 61, as shown in FIG. 4.

    In Figur 4 ist der mit jedem Stützelement 9 in Verbindung stehende Mechanismus 51 zum Spannen der Feder 46 dargestellt.
    Eine Gewindespindel 58 stützt sich z.B. an einem nur teilweise dargestellten Widerlager 62 ab, das fest mit dem Stützelement 9 verbunden ist.
    Die Gewindespindel 58 steht z.B. mit einem mit Innengewinde ausgerüsteten Schraubteil (nicht dargestellt) in Gewindeeingriff. Das Schraubteil ist Bestandteil des Zugbolzens 59, an dem die Feder 46 angreift.
    Das freie Ende der Gewindespindel 58 ist hier mit einem steuerbaren elektromotorischen Stellantrieb 61 verbunden.
    Durch eine motorische oder manuelle Verstellung der Gewindespindel 58 ist die Spannung der Feder 46, die an dem Verbindungselement 50 des Auslenkhebels 48 und an dem Zugbolzen 59 angelenkt ist, und damit die Spannkraft der Tänzerwelle 8 auf die sie umschlingende Polkette 4 einstellbar.
    FIG. 4 shows the mechanism 51 for tensioning the spring 46 which is connected to each support element 9.
    A threaded spindle 58 is supported, for example, on an abutment 62 which is only partially shown and which is firmly connected to the support element 9.
    The threaded spindle 58 is, for example, in threaded engagement with a screw part (not shown) equipped with an internal thread. The screw part is part of the tension bolt 59, on which the spring 46 engages.
    The free end of the threaded spindle 58 is connected here to a controllable electromotive actuator 61.
    By means of a motorized or manual adjustment of the threaded spindle 58, the tension of the spring 46, which is articulated on the connecting element 50 of the deflection lever 48 and on the draw bolt 59, and thus the tensioning force of the dancer shaft 8 on the pole chain 4 looping around it can be adjusted.

    Figur 5 zeigt die Einflußnahme der Arbeitseinheit 52 auf die Tänzerwelle 8 zur Bereitstellung einer Polkettfadenabgaberate 54 vor dem Schußgruppenanschlag des in Figur 1 dargestellten Webblattes 22.
    Die Arbeitseinheit ist als doppelt wirkende, pneumatisch betriebene Kolben-Zylindereinheit ausgebildet.
    Der kolbenstangenseitige Zylinderraum 52b und der kolbenseitige Zylinderraum 52c ist mit jeweils einem gesteuerten Schnellentlüftungsventil 63, 64 verbunden. Eine zu jedem Ventil 63, 64 führende Arbeits- bzw. Ausgangsleitung 65, 66 führt über ein entsprechendes steuerbares Ventil 67, 68 und über die Leitung 69 zu einer nicht dargestellten Druckquelle.
    Durch eine Beaufschlagung des kolbenseitigen Zylinderraumes 52c wird der über den mit der Kolbenstange 52a verbundene Auslenkhebel 48 unter Teilentlastung der Spannkraft der Feder 46 zusammen mit der Tänzerwelle 8 ausgelenkt und eine Polketffadenabgaberate 54 zur Bildung einer Schlingenreihe im Zuge des Schußgruppenanschlages freigegeben.
    Zum Bordüreweben erfolgt bekanntlich keine Schußgruppenbildung. Demzufolge darf auch keine Polketffadenabgaberate 54 bereitgestellt werden. Zum Zwecke der Bordürenbildung ist der kolbenstangenseitige Zylinderraum 52b für die Zeit des Bordürewebens ständig druckbeaufschlagt oder die Bewegung der Kolbenstange 52a zumindest blockiert.
    FIG. 5 shows the influence of the working unit 52 on the dancer shaft 8 to provide a pile warp threading rate 54 before the weft group stop of the reed 22 shown in FIG. 1.
    The work unit is designed as a double-acting, pneumatically operated piston-cylinder unit.
    The cylinder chamber 52b on the piston rod side and the cylinder chamber 52c on the piston side are each connected to a controlled quick exhaust valve 63, 64. A working or output line 65, 66 leading to each valve 63, 64 leads via a corresponding controllable valve 67, 68 and via line 69 to a pressure source, not shown.
    By acting on the piston-side cylinder chamber 52c, the deflection lever 48, which is connected to the piston rod 52a, is deflected together with the dancer shaft 8, partially relieving the tensioning force of the spring 46, and a chain thread dispensing rate 54 is released to form a loop row in the course of the weft group attack.
    As is known, no shot group formation takes place for border weaving. Accordingly, no warp thread delivery rate 54 may be provided. For the purpose of forming borders, the cylinder chamber 52b on the piston rod side is constantly pressurized for the time the border is raised or the movement of the piston rod 52a is at least blocked.

    ZEICHNUNGS-LEGENDEDRAWING LEGEND

    11
    WebmaschineWeaving machine
    22nd
    PolkettbaumPolkettbaum
    33rd
    Trägercarrier
    44th
    PolkettePole chain
    55
    UmlenkwalzeDeflection roller
    66
    DoppelpfeilDouble arrow
    77
    SpannwalzeTension roller
    88th
    TänzerwelleDancer wave
    8a8a
    MittenachseCenter axis
    99
    StützelementSupport element
    9a9a
    Schenkelleg
    9b9b
    Schenkelleg
    9c9c
    Längsführung oder LanglochLongitudinal guide or slot
    1010th
    SeitenwangeSidewall
    1111
    LagerstelleDepository
    1212th
    ZapfenCones
    12a12a
    MittenachseCenter axis
    1313
    LagerstelleDepository
    1414
    Wellewave
    14a14a
    MittenachseCenter axis
    1515
    AnlenkstelleArticulation point
    1616
    KoppelPaddock
    1717th
    FrottierantriebTerry drive
    1818th
    Gewebetissue
    1919th
    AnschlagpunktAnchor point
    2020th
    DrehachseAxis of rotation
    2121
    WebladeDrawer
    2222
    WebblattReed
    2323
    FrottierwelleTerry wave
    2424th
    Exzentereccentric
    2525th
    ZugfederTension spring
    2626
    Steuerhebel Control lever
    26a26a
    AbtastrolleScanning roll
    2727
    KoppelPaddock
    2828
    VerbindungsstückConnector
    2929
    KoppelPaddock
    3030th
    DoppelpfeilDouble arrow
    3131
    Hebellever
    3232
    EinziehwalzeFeed roller
    3333
    Elementelement
    3434
    Elementelement
    3535
    Elementelement
    3636
    WarenbaumGoods tree
    3737
    ZugfederTension spring
    3838
    HarnischschnüreHarness cords
    3939
    JacquardeinrichtungJacquard facility
    4040
    GrundketteBasic chain
    4141
    GrundkettbaumBasic warp beam
    4242
    UmlenkwalzeDeflection roller
    4343
    StreichbaumMatchstick
    4444
    KoppelPaddock
    4545
    Hebellever
    45a45a
    Achseaxis
    4646
    ZugfederTension spring
    4747
    DoppelhebelDouble lever
    47a47a
    Federfeather
    47b47b
    Drehpunktpivot point
    4848
    AuslenkhebelLever
    4949
    Pfeilarrow
    5050
    VerbindungselementFastener
    5151
    FederspannmechanismusSpring tension mechanism
    5252
    ArbeitseinheitWork unit
    52a52a
    KolbenstangePiston rod
    52b52b
    Kolbenstangenseitiger ZylinderraumCylinder chamber on the piston rod side
    52c52c
    Kolbenseitiger ZylinderraumPiston-side cylinder space
    5353
    FestpunktBenchmark
    5454
    PolketffadenabgaberateChain thread delivery rate
    5555
    Pfeil arrow
    5656
    PolkettfadenspannungsmeßeinrichtungPole warp tension measuring device
    5757
    KulissenführungScenery tour
    5858
    GewindespindelThreaded spindle
    5959
    ZugbolzenDraw bolt
    6060
    SeitenführungselementSide guide element
    6161
    StellantriebActuator
    6262
    WiderlagerAbutment
    6363
    EntluftungsventilVent valve
    6464
    EntluftungsventilVent valve
    6565
    Leitungmanagement
    6666
    Leitungmanagement
    6767
    VentilValve
    6868
    VentilValve
    6969
    Leitungmanagement

    Claims (14)

    1. Control system for influencing the tensile stress in a pile warp (4) and for making ready feed portions of pile warp thread during manufacture of terry cloth on looms having a pile warp beam (2) controlled to let off warp, from which pile warp beam the pile warp (4) is continuously let off over at least one guide roller and over a compensator shaft (8) whilst maintaining a pile warp tension, and wherein a feed portion (54) of the pile warp thread is made ready before each beating-up of the group of weft threads by a weaving reed (22) and before a controlled displacement, accompanying beating-up of the groups of weft threads, of the beating-up edge (19) of the cloth (18) towards the beating-up position of the weaving reed (22), characterised in that
      the guide roller (5) is in operative connection with a controllable motor drive and the guide roller (5) furthermore has a roller surface that exerts a frictional force on the pile warp (4) looped around it,
      the compensator shaft (8) is fixedly connected at its free ends eccentrically with respect to its centre line (8a) to a rotatably mounted shaft (14) and the shaft (14) in its turn is rotatably mounted in a supporting element (9),
      each supporting element (9) has, spaced from a bearing (13) of the shaft (14), a pin (12), which is rotatably housed in a bearing (11) built into the loom,
      at least one deflecting lever (45), biassed by at least one spring (46), acts on each free end of the compensator shaft (8),
      the spring (46) is coupled at one end to a connecting element (50) of the deflecting lever (45) and at the other end to a tension bolt (59) constructed so as to be displaceable on the supporting element (9),
      each supporting element (9) is operatively connected by way of at least one connecting rod (16) displaceably mounted in the supporting element (9) to a terry drive (17) known per se, and
      at least one controllable dynamic unit (52) built into the loom acts on each deflecting lever (48) and moves the spring-loaded deflecting lever (48) with an oscillating motion.
    2. Control system according to claim 1, characterised in that, together with the spring (46) and a tension bolt (59) that is mounted in the supporting element (9) in a sliding guide (57) and is in operative connection with a threaded spindle (58) supported on the supporting element (9), the deflecting lever (48) forms a spring-tension mechanism (51).
    3. Control system according to claim 2, characterised in that each threaded spindle (58) is in connection with a motorised actuating drive (61).
    4. Control system according to claim 2, characterised in that the threaded spindle (58) includes means for manual operation.
    5. Control system according to claim 3, characterised in that an electronic control unit of the loom (1) starts the actuating drives (61) synchronously and drives the spindles (58) synchronously.
    6. Control system according to claim 1, characterised in that between the guide roller (5) and the compensator shaft (5) the pile warp (4) runs through a warp tension measuring device (56) and, in response to the tension values measured, influences a warp let-off control means in a manner known per se and in addition is capable of influencing the actuating drive (61) of a spring tension mechanism (51) or control means of the motor-driven guide roller (5).
    7. Control system according to claim 1, characterised in that the motor-driven guide roller (5) is connected for signal transmission to the electronic control unit of the loom (1) and is controllable such that the warp tension is influenced.
    8. Control system according to claim 1, characterised in that the controlled dynamic unit (52) is a single-acting or double-acting, pneumatically loadable piston cylinder unit, which is rotatably mounted at one end at a suitable point (53) built into the loom and at the other end at the connecting element (50) of the articulated lever (48).
    9. Control system according to claim 1, characterised in that the motor drive of the guide roller (5) is a d.c. motor integrated in the guide roller (5) and having a constant rotary drive.
    10. Control system according to claim 1, characterised in that the supporting element (9) is formed by a vertical arm (9a) and by an arm (9b) arranged horizontal thereto.
    11. Control system according to claim 1, characterised in that the articulation point of the connecting rod (16) for adjusting a basic terry motion of the compensator shaft (8) is displaceable in an elongate guide (9c) of the supporting element (9).
    12. Control system according to claim 11, characterised in that displacement of the articulation point (15) is effected manually or by motor by way of a threaded spindle connected to the connecting rod joint.
    13. Control system according to claims I and 8, characterised in that the piston end of the working unit (52) for producing terry cloth is arranged to be acted on synchronously with the terry motion of the terry drive (17).
    14. Control system according to claims 1 and 8, characterised in that, for producing plain cloth, only the piston rod end of the working unit (52) is arranged to be acted on synchronously with the terry motion of the terry drive (17).
    EP96111877A 1995-08-17 1996-07-24 Pile warp control system for producing terry fabric on looms Expired - Lifetime EP0761857B1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    DE19530222 1995-08-17
    DE19530222A DE19530222C1 (en) 1995-08-17 1995-08-17 Terry loom control system prevents piled warp vibrating and lifting

    Publications (2)

    Publication Number Publication Date
    EP0761857A1 EP0761857A1 (en) 1997-03-12
    EP0761857B1 true EP0761857B1 (en) 1998-12-09

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    ID=7769685

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP96111877A Expired - Lifetime EP0761857B1 (en) 1995-08-17 1996-07-24 Pile warp control system for producing terry fabric on looms

    Country Status (3)

    Country Link
    EP (1) EP0761857B1 (en)
    JP (1) JP2986738B2 (en)
    DE (2) DE19530222C1 (en)

    Families Citing this family (6)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    JP3552595B2 (en) 1999-06-28 2004-08-11 津田駒工業株式会社 Ground warp feeding tension device for pile loom of cloth moving type
    DE10054851A1 (en) * 2000-05-12 2002-05-29 Dornier Gmbh Lindauer terry
    DE10023445A1 (en) * 2000-05-12 2001-11-29 Dornier Gmbh Lindauer Loom for weaving terry fabrics has separate monitors for the bands of pile and ground warps which are freely accessible from the side of the loom with structured warp path deflections
    ITUB20152354A1 (en) * 2015-07-21 2017-01-21 Itema Spa ADJUSTMENT DEVICE FOR THE VOLTAGE WIRE STRIPPING IN A FRAME FOR SPONGE WEAVING
    DE102019208377B3 (en) * 2019-06-07 2020-04-23 Lindauer Dornier Gesellschaft Mit Beschränkter Haftung Device for making the line of tie even when weaving terry fabrics
    CN112323223B (en) * 2020-09-29 2021-12-10 武汉纺织大学 Intermittent type formula is rolled back initiative warp beam constant tension mechanism

    Family Cites Families (5)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    JP2710046B2 (en) * 1986-12-04 1998-02-10 津田駒工業 株式会社 Warp tension control method for pile loom
    JPH0718071B2 (en) * 1988-07-27 1995-03-01 津田駒工業株式会社 Soccer loom
    DE4005751A1 (en) * 1990-02-23 1991-08-29 Dornier Gmbh Lindauer Loom seersucker unit
    DE4310840C1 (en) * 1993-04-02 1994-01-13 Dornier Gmbh Lindauer Pile warp tensioner - relates tension during each full beating in action by the reed when weaving towelling
    IT1267447B1 (en) * 1993-09-13 1997-02-05 Toyoda Automatic Loom Works PROCESS AND APPARATUS FOR THE FORMATION OF THE HAIR IN A MACHINE FOR WEAVING HAIR FABRICS.

    Also Published As

    Publication number Publication date
    DE59600952D1 (en) 1999-01-21
    JP2986738B2 (en) 1999-12-06
    DE19530222C1 (en) 1996-06-05
    EP0761857A1 (en) 1997-03-12
    JPH09111597A (en) 1997-04-28

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