EP0897026A2 - Method for controlled warp tensioning in the manufacture of more especially cord fabric for vehicle tyres on a weaving device and weaving device for carrying out this method - Google Patents

Method for controlled warp tensioning in the manufacture of more especially cord fabric for vehicle tyres on a weaving device and weaving device for carrying out this method Download PDF

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Publication number
EP0897026A2
EP0897026A2 EP98112449A EP98112449A EP0897026A2 EP 0897026 A2 EP0897026 A2 EP 0897026A2 EP 98112449 A EP98112449 A EP 98112449A EP 98112449 A EP98112449 A EP 98112449A EP 0897026 A2 EP0897026 A2 EP 0897026A2
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EP
European Patent Office
Prior art keywords
weaving
reference plane
warp
roller
warp thread
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EP98112449A
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German (de)
French (fr)
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EP0897026A3 (en
Inventor
Ewald Zimmermann
Herbert Müller
Martin Eberle
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Lindauer Dornier GmbH
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Lindauer Dornier GmbH
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Publication date
Application filed by Lindauer Dornier GmbH filed Critical Lindauer Dornier GmbH
Publication of EP0897026A2 publication Critical patent/EP0897026A2/en
Publication of EP0897026A3 publication Critical patent/EP0897026A3/en
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    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D49/00—Details or constructional features not specially adapted for looms of a particular type
    • D03D49/04—Control of the tension in warp or cloth
    • D03D49/12—Controlling warp tension by means other than let-off mechanisms

Definitions

  • a special feature of the known systems is that a separate device, referred to as a so-called infeed frame, is arranged between the weaving machine and at least one bobbin creel with a multiplicity of rotating bobbins which have a self-braking effect or are actively braked directly.
  • a dancer device is integrated, the task of which is to create a length compensation in the warp thread array during webstop or during the execution of weaving operations, and the rotation difference between the starting and the weaving machine at a relatively high pulling speed of the warp threads from the warp thread bobbins during a restart of the weaving machine To temporarily compensate the working rotation of the coils in the creel.
  • a spring-loaded dancer which is arranged between two rollers arranged axially parallel and at a distance from one another, causes the warp thread coulter to be deflected, i.e. the trailing length of the warp thread coulter resulting from the moment of inertia of the rotating warp thread coulters is taken up by deflection by means of the dancer shaft relative to a reference plane of the warp thread coulter .
  • the deflected trailing length is released in a spring-elastic manner when the weaving machine is restarted, so that more or less a jerky start of the warp thread bobbins and in connection therewith an overextension of the warp thread family is avoided.
  • the object of the invention is to further improve the known process sequence for the production of, in particular, cord fabric for pneumatic vehicle tires in such a way that the weaving speed, in particular the take-off speed of the warp threads from the bobbins and the weight of the bobbins have no negative influence, such as, for example, overextension of the warp thread family when the machine is started. exercise. Furthermore, it is an object of the invention to improve the known weaving installation for carrying out the method.
  • the task is performed according to the working method by the features of claim 1 solved. Thereafter, it is essential to the invention that the warp thread family when the Weaving process or in a weaving operation in at least one defined Position relative to a plane in which the thread sheet is guided through the infeed frame, in the sense of creating a stock of warp is controlled and that at Restart of the weaving process or the thread group at the end of a weaving operation controlled from the deflection position is returned to the aforementioned plane.
  • an actuating unit acts on each support element, spaced from its axis of rotation located in the separate device, which the dancer shaft together with the warp thread group when a weaving stop occurs or when a weaving operation is carried out from a reference plane of the thread family or from a first position of the Dancer shaft controlled in at least a second or third position within the device and when the weaving machine is restarted or at the end of the weaving operation, the weaving chain is returned to the reference plane in a controlled manner by means of the dancer shaft by the dancer shaft.
  • a measuring device is assigned to at least one support member within the separate device.
  • Either a displacement measuring device that interacts with one of the supporting members can be considered as the measuring device. It can also be considered to integrate a load cell into one of the rollers.
  • the measuring device can be a pressure measuring device that absorbs the bearing forces of the roller and transmits it to the central control of the weaving system, as is the case in the other cases of using a measuring device is.
  • the control of the at least one actuating unit then forms, together with the relevant warp tension measuring device, an electrical control circuit for bringing about and canceling the deflection of the warp thread family.
  • FIG. 1 there is the weaving system for producing cord fabric for Pneumatic vehicle tires from at least one creel 4 and a plurality of self-braking coils 5, optionally from a perforated board 14, one Loom 15 with take-off roller 3, one between the creel 4 and the Loom 15 arranged separate device 8, which also serves as an infeed frame is referred to, in which a warp thread sheet 1 in a by a thread guide device 6 and by means of two rollers 16, 17 which are spaced axially parallel to one another formed reference level 7 is guided in order, monitored in a warp guard unit 25 is and between the rollers 16, 17 by a dancer shaft 18, the ends of each a support member 19, 20 with axis of rotation 21 is mounted, is held taut and one of the Weaving machine 15 downstream winder 10 for winding the fabric 9.
  • the coils 5 accommodated in the creel 4 have a weight of several kilograms when fully wound.
  • the bobbins 5 are received in the creel 4 and rotatably supported about their longitudinal axis in such a way that the warp threads 2 can be drawn off radially from the bobbin.
  • the warp threads 2 are guided through a perforated board 14 arranged downstream of the creel 4, the warp threads 2 can be arranged in a single-layer thread array 1 and supplied to the separate device 8, the so-called infeed frame, mounted on a carrier frame 23.
  • the warp thread sheet 1 passes on the input side of the device 8 in a reference plane 7 through a thread guide device 6 and subsequently through a warp guard device 25 before it is pulled between the rollers 16, 17 and a movement-controlled dancer shaft 18 under the rotation of the take-off roller 3.
  • the support frame 23 is designed in the direction of the weaving machine 15 so that between the take-off roller 3 of the weaving machine 15 and the device 8 space for one Webergang 24 exists.
  • the warp thread sheet 1 leaving the device 8 via the roller 17 is guided over the deflecting rollers 28, 29 and reaches the draw-off roller 3 of the weaving machine 15 either directly or indirectly via a further deflecting roller 30 positioned above the axis of rotation 3a of the draw-off roller 3.
  • the indirect guidance of the warp thread sheet 1 has the advantage that the warp thread sheet 1 realizes a somewhat larger wrap angle on the take-off roller 3 than would be possible without the deflection roller 30.
  • the larger looping effect has an advantageous effect on the take-off behavior of the take-off roller 3 in relation to the coils 5.
  • the warp thread sheet 1 together with weft threads in one known tissue imaging process produces a tissue 9, which after leaving the Weaving machine is wound up into a fabric bale 9a by means of a winder 10.
  • the device 8 consists of a first support member 19 and a second Support member 20. Both support members are spaced apart from one another by a common one Axis of rotation 21 is pivotally mounted in the device 8 and take on its free ends a dancer shaft 18 rotatably.
  • the axis of rotation 18a of the dancer shaft 18 is in a first position 11 above the axes of rotation 16a, 17a of the rollers 16, 17.
  • the first position 11 corresponds approximately to the reference plane 7, in which the warp thread sheet 1 is pulled through the device 8.
  • At least one actuating unit 22 engages on the composite support member 19, 20 and dancer shaft 18 spaced from the axis of rotation 21 which, like the device 8, with the support frame 23 connected is.
  • the actuating unit 22 is connected to a controller 26.
  • the dancer shaft 18 is moved from a first position 11 to a second position 12 or to a third position 13 or from these positions 12, 13, depending on a web stop, a weaving operation and a restart of the weaving process 11 moved controlled.
  • the warp thread sheet is deflected in a controlled manner into positions 12, 13 or when the weaving process is restarted controlled from these positions in the reference plane 7.
  • a displacement measuring device 27a is present, which, like the measuring device 27 and the controller 26, signal-transmitting with the one not shown Loom control is connected.

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

Abstract

To control the warp tension, in a loom, the band of warps is given a controlled deflection in at least one defined position in relation to the reference plane, according to the weaving stop pulses. The weaving start pulses return the band of warps to the reference plane under control. Also claimed is an appts. with a carrier section (19,20), with at least one connected setting unit (22), to move the floating shaft (18) together with the band of warps (1) out of the reference plane (7) into at least a second or third position (12,13), and move them back.

Description

Zur Herstellung von insbesondere Reifencord sind Webanlagen der Anmelderin bekannt, die verfahrensgemäß nach den Merkmalen des Oberbegriffs von Patentanspruch 1 arbeiten.For the production of tire cord in particular, the applicant's weaving lines are known work according to the features of the preamble of claim 1.

Ferner sind Webanlagen der Anmelderin zur Herstellung von Reifencord bekannt, die gemäß der Merkmale des Oberbegriffs von Patentanspruch 7 aufgebaut sind.Furthermore, the applicant's weaving systems for producing tire cord are known, which according to the features of the preamble of claim 7 are constructed.

Besonderes Kennzeichen der bekannten Anlagen ist, daß zwischen der Webmaschine und wenigstens einem Spulengatter mit einer Vielzahl von drehend gelagerten Fadenspulen, die einen Selbstbremseffekt besitzen oder aber direkt aktiv gebremst werden, eine separate Vorrichtung, als sogenanntes Einlaufgestell bezeichnet, eingeordnet ist.
In dem Einlaufgestell ist u.a. eine Tänzereinrichtung integriert, deren Aufgabe es ist, bei Webstop oder während der Ausführung webtechnischer Operationen einen Längenausgleich in der Kettfadenschar zu schaffen und bei relativ hoher Abzugsgeschwindigkeit der Kettfäden von den Kettfadenspulen während eines Neustarts der Webmaschine die Rotationsdifferenz zwischen Anfangs- und Arbeitsrotation der Spulen im Spulengatter temporär zu kompensieren.
Bei Webmaschinenstop bewirkt ein federbelasteter Tänzer, der zwischen zwei achsparallel und beabstandet voneinander angeordneten Walzen eingeordnet ist, daß die Kettfadenschar ausgelenkt wird, d.h. die aus dem Trägheitsmoment der rotierenden Kettfadenspulen resultierenden Nachlauflänge der Kettfadenschar wird durch Auslenken mittels der Tänzerwelle relativ zu einer Bezugsebene der Kettfadenschar aufgenommen. Die ausgelenkte Nachlauflänge wird bei Neustart der Webmaschine federelastisch freigegeben, so daß mehr oder weniger ein ruckartiges Anlaufen der Kettfadenspulen und im Zusammenhang damit ein Überdehnen der Kettfadenschar vermieden wird.A special feature of the known systems is that a separate device, referred to as a so-called infeed frame, is arranged between the weaving machine and at least one bobbin creel with a multiplicity of rotating bobbins which have a self-braking effect or are actively braked directly.
In the infeed frame, a dancer device is integrated, the task of which is to create a length compensation in the warp thread array during webstop or during the execution of weaving operations, and the rotation difference between the starting and the weaving machine at a relatively high pulling speed of the warp threads from the warp thread bobbins during a restart of the weaving machine To temporarily compensate the working rotation of the coils in the creel.
When the loom is stopped, a spring-loaded dancer, which is arranged between two rollers arranged axially parallel and at a distance from one another, causes the warp thread coulter to be deflected, i.e. the trailing length of the warp thread coulter resulting from the moment of inertia of the rotating warp thread coulters is taken up by deflection by means of the dancer shaft relative to a reference plane of the warp thread coulter . The deflected trailing length is released in a spring-elastic manner when the weaving machine is restarted, so that more or less a jerky start of the warp thread bobbins and in connection therewith an overextension of the warp thread family is avoided.

Aus den vorbeschriebenen Verfahrensablauf zum Aufnehmen und Freigeben der Nachlauflänge wird deutlich, daß auch eine durch Zugfedern belastete Tänzerwelle nur anhand von empirischen Erfahrungswerten auf die sich aus einem Webstop oder aus webtechnischen Operationen ergebende Auslaufrotation der Spulen reagieren kann.
Bei schweren, vollbewickelten Spulen und bei hoher Webgeschwindigkeit genügt daher die Reaktion der federbelasteten Tänzerwelle auf die Kettfadenschar nicht den an sie gestellten Anforderungen.From the above-described procedure for taking up and releasing the trailing length, it becomes clear that even a dancer shaft loaded by tension springs can only react to the outfeed rotation of the bobbins resulting from a web stop or weaving operations based on empirical experience.
In the case of heavy, fully wound bobbins and at high weaving speeds, the reaction of the spring-loaded dancer shaft to the warp thread coulter does not meet the requirements placed on it.

Aufgabe der Erfindung ist es, den bekannten Verfahrensablauf zur Herstellung von insbesondere Cordgewebe für Fahrzeugluftreifen derart weiter zu verbessern, daß die Webgeschwindigkeit, insbesondere die Abzugsgeschwindigkeit der Kettfäden von den Spulen und das Gewicht der Spulen keinen negativen Einfluß, wie z.B. Überdehnung der Kettfadenschar bei Maschinenstart, ausüben.
Ferner ist es Aufgabe der Erfindung, die bekannte Webanlage zur Durchführung des Verfahrens dahingehend zu verbessern.The object of the invention is to further improve the known process sequence for the production of, in particular, cord fabric for pneumatic vehicle tires in such a way that the weaving speed, in particular the take-off speed of the warp threads from the bobbins and the weight of the bobbins have no negative influence, such as, for example, overextension of the warp thread family when the machine is started. exercise.
Furthermore, it is an object of the invention to improve the known weaving installation for carrying out the method.

Die Aufgabe wird gemäß des Arbeitsverfahrens durch die Merkmale des Patentanspruchs 1 gelöst. Danach ist erfindungswesentlich, daß die Kettfadenschar bei einer Unterbrechung des Webprozesses oder bei einer webtechnischen Operation in wenigstens eine definierte Position relativ zu einer Ebene, in der die Fadenschar durch das Einlaufgestell geführt wird, im Sinne der Schaffung eines Vorrats an Webkette gesteuert ausgelenkt wird und daß bei Neustart des Webprozesses oder bei Ende einer webtechnischen Operation die Fadenschar aus der Auslenkposition gesteuert in die vorgenannte Ebene zurückgeführt wird.The task is performed according to the working method by the features of claim 1 solved. Thereafter, it is essential to the invention that the warp thread family when the Weaving process or in a weaving operation in at least one defined Position relative to a plane in which the thread sheet is guided through the infeed frame, in the sense of creating a stock of warp is controlled and that at Restart of the weaving process or the thread group at the end of a weaving operation controlled from the deflection position is returned to the aforementioned plane.

Bezüglich der Webanlage wird die Aufgabe erfindungsgemäß durch die Merkmale des Patentanspruchs 7 gelöst.
Erfindungswesentlich ist danach, daß in der Webanlage in einer zwischen der Webmaschine mit Abzugswalze und dem Spulengatter vorhandenen separaten Vorrichtung (Einlaufgestell) oberhalb der Drehachse zweier achsparallel und beabstandet voneinander angeordneter Walzen, die in der Vorrichtung drehend gelagert sein können, eine endseitig mit jeweils einem Tragorgan verbundene Tänzerwelle positioniert ist.
Ein Umfangsbereich der Tänzerwelle kann dabei vorzugsweise mit der Kettfadenschar in Berührungskontakt stehen. With regard to the weaving system, the object is achieved according to the invention by the features of patent claim 7.
It is essential to the invention that in the weaving system in a separate device (infeed frame) between the weaving machine with the take-off roller and the creel, above the axis of rotation of two axially parallel and spaced-apart rollers, which can be rotatably mounted in the device, one end each with a support member connected dancer shaft is positioned.
A peripheral region of the dancer shaft can preferably be in contact with the warp thread family.

In der erfindungsgemäßen Lösung greift an jedem Tragorgan beabstandet von dessen in der separaten Vorrichtung gelegenen Drehachse eine Stelleinheit an, die die Tänzerwelle zusammen mit der Kettfadenschar bei Auftreten eines Webstops oder bei Ausführen einer webtechnischen Operation aus einer Bezugsebene der Fadenschar bzw. aus einer ersten Position der Tänzerwelle gesteuert in wenigstens eine zweite oder dritte Position innerhalb der Vorrichtung bewegt und bei Neustart der Webmaschine oder bei Ende der webtechnischen Operation die Webkette unter dem Zug der Abzugswalze der Webmaschine mittels der Tänzerwelle gesteuert in die Bezugsebene zurückgeführt wird.
Zum gesteuerten Beeinflussen (Herbeiführen einer Auslenkung und Aufheben dieser Auslenkung) ist wenigstens einem Tragorgan innerhalb der separaten Vorrichtung eine Messeinrichtung zugeordnet.In the solution according to the invention, an actuating unit acts on each support element, spaced from its axis of rotation located in the separate device, which the dancer shaft together with the warp thread group when a weaving stop occurs or when a weaving operation is carried out from a reference plane of the thread family or from a first position of the Dancer shaft controlled in at least a second or third position within the device and when the weaving machine is restarted or at the end of the weaving operation, the weaving chain is returned to the reference plane in a controlled manner by means of the dancer shaft by the dancer shaft.
For controlled influencing (bringing about a deflection and canceling this deflection), a measuring device is assigned to at least one support member within the separate device.

Als Messeinrichtung kommt dabei entweder eine Wegmesseinrichtung in Betracht, die mit einem der Tragorgane zusammenwirkt. Ferner kann in Betracht gezogen werden, in eine der Walzen eine Lastmesszelle zu integrieren.
In dem Falle, daß die Walze drehend in der separaten Vorrichtung gelagert ist, kann die Messeinrichtung eine Druckmesseinrichtung sein, die die Lagerkräfte der Walze aufnimmt und der zentralen Steuerung der Webanlage signalübertragend übermittelt, wie dies auch in den anderen Fällen der Verwendung einer Messeinrichtung der Fall ist.
Die Steuerung der wenigstens einen Stelleinheit bildet dann zusammen mit der betreffenden Kettspannungs-Messeinrichtung einen elektrischen Regelkreis zum Herbeiführen und Aufheben der Auslenkung der Kettfadenschar aus.Either a displacement measuring device that interacts with one of the supporting members can be considered as the measuring device. It can also be considered to integrate a load cell into one of the rollers.
In the event that the roller is rotatably supported in the separate device, the measuring device can be a pressure measuring device that absorbs the bearing forces of the roller and transmits it to the central control of the weaving system, as is the case in the other cases of using a measuring device is.
The control of the at least one actuating unit then forms, together with the relevant warp tension measuring device, an electrical control circuit for bringing about and canceling the deflection of the warp thread family.

Mit der erfindungsgemäßen Lösung wird in vorteilhafter Weise erreicht,

  • ein Ausgleich zwischen der Abzugsgeschwindigkeit der Kettfadenschar und der Anfangsrotation der Fadenspulen in der Startphase der Webmaschine, was die Kettfadenschar gegen Überdehnung in der Startphase schützt,
  • ein Aufrechterhalten einer entsprechenden Kettspannung in der Kettfadenschar während der Stopphase der Webmaschine und bei Ende von webtechnischen Operationen und
  • die Aufrechterhaltung einer geordneten Fadenschar in jeder Arbeitsphase der Webanlage.
The solution according to the invention advantageously achieves
  • a balance between the take-off speed of the warp thread sheet and the initial rotation of the thread spools in the start phase of the weaving machine, which protects the warp thread sheet against overstretching in the start phase,
  • maintaining a corresponding warp tension in the warp thread sheet during the stop phase of the weaving machine and at the end of weaving operations and
  • the maintenance of an orderly thread group in every working phase of the weaving system.

Die Erfindung wird nachstehend anhand eines Ausführungsbeispiels näher beschrieben. Die Zeichnungen zeigen in:

Figur 1
den schematischen Aufbau einer Webanlage zum Herstellen von insbesondere Cordgewebe für Fahrzeugluftreifen,
Figur 2
die zwischen der Webmaschine und dem Spulengatter einer Webanlage eingeordnete separate Vorrichtung mit den Mitteln zum gesteuerten Auslenken und Freigeben der Kettfadenschar.
The invention is described below with reference to an embodiment. The drawings show in:
Figure 1
the schematic structure of a weaving system for the production of in particular cord fabric for pneumatic vehicle tires,
Figure 2
the separate device arranged between the weaving machine and the creel of a weaving system with the means for the controlled deflection and release of the warp thread sheet.

Gemäß Figur 1 besteht die Webanlage zum Herstellen von Cordgewebe für Fahrzeugluftreifen aus wenigstens einem Spulengatter 4 und einer Vielzahl von selbstbremsend angeordneten Spulen 5, gegebenenfalls aus einem Lochbrett 14, einer Webmaschine 15 mit Abzugswalze 3, einer zwischen dem Spulengatter 4 und der Webmaschine 15 eingeordneten separaten Vorrichtung 8, die auch als Einlaufgestell bezeichnet wird, in der eine Kettfadenschar 1 in einer durch eine Fadenführungseinrichtung 6 und durch zwei voneinander achsparallel beabstandet angeordneten Walzen 16,17 gebildeten Bezugsebene 7 geordnet geführt wird, in einer Kettwächtereinheit 25 überwacht wird und zwischen den Walzen 16,17 von einer Tänzerwelle 18, die endseitig an jeweils einem Tragorgan 19,20 mit Drehachse 21 gelagert ist, gespannt gehalten wird und einem der Webmaschine 15 nachgeordneten Wickler 10 zum Aufwickeln des Gewebes 9.According to Figure 1, there is the weaving system for producing cord fabric for Pneumatic vehicle tires from at least one creel 4 and a plurality of self-braking coils 5, optionally from a perforated board 14, one Loom 15 with take-off roller 3, one between the creel 4 and the Loom 15 arranged separate device 8, which also serves as an infeed frame is referred to, in which a warp thread sheet 1 in a by a thread guide device 6 and by means of two rollers 16, 17 which are spaced axially parallel to one another formed reference level 7 is guided in order, monitored in a warp guard unit 25 is and between the rollers 16, 17 by a dancer shaft 18, the ends of each a support member 19, 20 with axis of rotation 21 is mounted, is held taut and one of the Weaving machine 15 downstream winder 10 for winding the fabric 9.

Die in dem Spulengatter 4 aufgenommenen Spulen 5 weisen bei voller Bewicklung ein Gewicht von mehreren Kilogramm auf.
Die Spulen 5 sind in dem Gatter 4 derart aufgenommen und drehbeweglich um ihre Längsachse gelagert, daß die Kettfäden 2 radial vom Spulenkörper abgezogen werden können.The coils 5 accommodated in the creel 4 have a weight of several kilograms when fully wound.
The bobbins 5 are received in the creel 4 and rotatably supported about their longitudinal axis in such a way that the warp threads 2 can be drawn off radially from the bobbin.

Dadurch, daß die Kettfäden 2 durch ein dem Spulengatter 4 nachgeordnetes Lochbrett 14 geführt werden, können die Kettfäden 2 zu einer einlagigen Fadenschar 1 geordnet der auf einem Trägergestell 23 montierten separaten Vorrichtung 8, dem sogenannten Einlaufgestell, zugeführt werden.
Die Kettfadenschar 1 durchläuft eingangsseitig der Vorrichtung 8 in einer Bezugsebene 7 eine Fadenführungseinrichtung 6 und nachfolgend eine Kettwächtereinrichtung 25 bevor sie zwischen den Walzen 16,17 und einer bewegungsgesteuerten Tänzerwelle 18 unter der Rotation der Abzugswalze 3 hindurchgezogen wird.Characterized in that the warp threads 2 are guided through a perforated board 14 arranged downstream of the creel 4, the warp threads 2 can be arranged in a single-layer thread array 1 and supplied to the separate device 8, the so-called infeed frame, mounted on a carrier frame 23.
The warp thread sheet 1 passes on the input side of the device 8 in a reference plane 7 through a thread guide device 6 and subsequently through a warp guard device 25 before it is pulled between the rollers 16, 17 and a movement-controlled dancer shaft 18 under the rotation of the take-off roller 3.

Das Trägergestell 23 ist in Richtung der Webmaschine 15 derart ausladend ausgebildet, daß zwischen der Abzugswalze 3 der Webmaschine 15 und der Vorrichtung 8 Raum für einen Webergang 24 besteht.The support frame 23 is designed in the direction of the weaving machine 15 so that between the take-off roller 3 of the weaving machine 15 and the device 8 space for one Webergang 24 exists.

Unterhalb des Weberganges 24 sind in dem Trägergestell 23 zwei achsparallel und voneinander beabstandet angeordnete Umlenkwalzen 28,29 drehbeweglich gelagert.Below the weaving aisle 24 there are two axially parallel and in the support frame 23 Deflected deflection rollers 28, 29 mounted rotatably.

Die die Vorrichtung 8 über die Walze 17 verlassende Kettfadenschar 1 wird über die Umlenkwalzen 28,29 geführt und gelangt entweder direkt oder indirekt über eine weitere oberhalb der Drehachse 3a der Abzugswalze 3 positionierte Umlenkwalze 30 zu der Abzugswalze 3 der Webmaschine 15.
Mit der indirekten Führung der Kettfadenschar 1 ist dabei der Vorteil verbunden, daß die Kettfadenschar 1 an der Abzugswalze 3 einen etwas größeren Umschlingungswinkel realisiert als dies ohne der Umlenkwalze 30 möglich wäre.
Der größere Umschlingungswirkel wirkt sich vorteilhaft auf das Abzugsverhalten der Abzugswalze 3 gegenüber den Spulen 5 aus.The warp thread sheet 1 leaving the device 8 via the roller 17 is guided over the deflecting rollers 28, 29 and reaches the draw-off roller 3 of the weaving machine 15 either directly or indirectly via a further deflecting roller 30 positioned above the axis of rotation 3a of the draw-off roller 3.
The indirect guidance of the warp thread sheet 1 has the advantage that the warp thread sheet 1 realizes a somewhat larger wrap angle on the take-off roller 3 than would be possible without the deflection roller 30.
The larger looping effect has an advantageous effect on the take-off behavior of the take-off roller 3 in relation to the coils 5.

In der Webmaschine 15 wird aus der Kettfadenschar 1 zusammen mit Schußfäden in einem bekannten Gewebebildeprozeß ein Gewebe 9 produziert, das nach Verlassen der Webmaschine mittels eines Wicklers 10 zu einem Gewebeballen 9a aufgewickelt wird.In the weaving machine 15, the warp thread sheet 1 together with weft threads in one known tissue imaging process produces a tissue 9, which after leaving the Weaving machine is wound up into a fabric bale 9a by means of a winder 10.

Gemäß Figur 2 besteht die Vorrichtung 8 aus einem ersten Tragorgan 19 und einem zweiten Tragorgan 20. Beide Tragorgane sind beabstandet voneinander um eine gemeinsame Drehachse 21 in der Vorrichtung 8 schwenkbar gelagert und nehmen an ihren freien Enden eine Tänzerwelle 18 drehbeweglich auf. According to Figure 2, the device 8 consists of a first support member 19 and a second Support member 20. Both support members are spaced apart from one another by a common one Axis of rotation 21 is pivotally mounted in the device 8 and take on its free ends a dancer shaft 18 rotatably.

Während des normalen Webprozesses der Webmaschine 15 befindet sich die Drehachse 18a der Tänzerwelle 18 oberhalb der Drehachsen 16a,17a der Walzen 16,17 in einer ersten Position 11.
Die erste Position 11 entspricht dabei etwa der Bezugsebene 7, in der die Kettfadenschar 1 durch die Vorrichtung 8 gezogen wird.During the normal weaving process of the weaving machine 15, the axis of rotation 18a of the dancer shaft 18 is in a first position 11 above the axes of rotation 16a, 17a of the rollers 16, 17.
The first position 11 corresponds approximately to the reference plane 7, in which the warp thread sheet 1 is pulled through the device 8.

An dem Verbund Tragorgan 19,20 und Tänzerwelle 18 greift wenigstens eine Stelleinheit 22 beabstandet von der Drehachse 21 an, die, wie die Vorrichtung 8, mit dem Trägergestell 23 verbunden ist.At least one actuating unit 22 engages on the composite support member 19, 20 and dancer shaft 18 spaced from the axis of rotation 21 which, like the device 8, with the support frame 23 connected is.

Die Stelleinheit 22 steht mit einer Steuerung 26 in Verbindung.
Mittels der gesteuerten Stelleinheit 22 wird in Abhängigkeit von einem Webstop, einer webtechnischen Operation und einem Neustart des Webprozesses die Tänzerwelle 18 aus einer ersten Position 11 in eine zweite Position 12 oder in eine dritte Position 13 bzw. aus diesen Positionen 12,13 in die Position 11 gesteuert bewegt. Dabei wird entsprechend einer aus dem Webstop und damit aus der unterbrochenen Abzugsgeschwindigkeit der Abzugswalze 3, mit der die Kettfadenschar 1 von den Spulen 5 abgezogen wird, resultierenden Nachlauflänge der Kettfadenschar 1 die Kettfadenschar in die Positionen 12,13 gesteuert ausgelenkt bzw. bei Neustart des Weprozesses aus diesen Positionen in die Bezugsebene 7 gesteuert zurückgeführt.The actuating unit 22 is connected to a controller 26.
By means of the controlled actuating unit 22, the dancer shaft 18 is moved from a first position 11 to a second position 12 or to a third position 13 or from these positions 12, 13, depending on a web stop, a weaving operation and a restart of the weaving process 11 moved controlled. In accordance with a trailing length of the warp thread sheet 1 resulting from the webstop and thus from the interrupted take-off speed of the take-off roller 3 with which the warp thread sheet 1 is drawn off from the bobbins 5, the warp thread sheet is deflected in a controlled manner into positions 12, 13 or when the weaving process is restarted controlled from these positions in the reference plane 7.

Beim gesteuerten Auslenken und gesteuerten Aufheben der Auslenkung der Kettfadenschar 1 kann es von Vorteil sein, um die Kettfadenschar 1 immer unter einer gewissen Zugspannung zu halten, wenn diese Zugspannung z.B. an der Walze 17 durch eine geeignete Messeinrichtung 27 erfaßt wird und zum Steuern bzw. Regeln des Auslenk- und Freigabevorganges der Kettfadenschar 1 verwendet wird.With controlled deflection and controlled cancellation of the deflection of the warp thread coulter 1, it can be advantageous to keep the warp thread coulter 1 always under a certain To keep tension when this tension e.g. on the roller 17 by a suitable one Measuring device 27 is detected and for controlling or regulating the deflection and Release process of the warp thread sheet 1 is used.

Zur Lageerfassung der Tänzerwelle 18 ist im Bewegungsbereich, also zwischen der ersten Position 11 und der dritten Position 13, eine Wegmesseinrichtung 27a vorhanden, die, wie die Messeinrichtung 27 und die Steuerung 26, signalübertragend mit der nicht dargestellten Webmaschinensteuerung verbunden ist. To detect the position of the dancer shaft 18 is in the range of motion, that is between the first Position 11 and the third position 13, a displacement measuring device 27a is present, which, like the measuring device 27 and the controller 26, signal-transmitting with the one not shown Loom control is connected.

ZEICHNUNGS-LEGENDEDRAWING LEGEND

0101
KettfadenscharWarp thread sheet
0202
KettfadenWarp thread
0303
AbzugswalzeTake-off roller
03a03a
DrehachseAxis of rotation
0404
SpulengatterCreel
0505
SpuleKitchen sink
0606
FadenführungseinrichtungThread guiding device
0707
BezugsebeneReference plane
0808
Vorrichtungcontraption
0909
Gewebetissue
09a09a
GewebeballenTissue bale
1010th
WicklerWinder
1111
erste Positionfirst position
1212th
zweite Positionsecond position
1313
dritte Positionthird position
1414
LochbrettPerforated board
1515
WebmaschineWeaving machine
1616
Walzeroller
1717th
Walzeroller
1818th
TänzerwelleDancer wave
18a18a
DrehachseAxis of rotation
1919th
TragorganSupporting member
2020th
TragorganSupporting member
2121
DrehachseAxis of rotation
2222
StelleinheitActuator
2323
TrägergestellCarrier frame
2424th
WebergangWeaver gear
2525th
KettwächtereinheitWarp guard unit
2626
Steuerung control
2727
MesseinrichtungMeasuring device
27a27a
WegmesseinrichtungPosition measuring device
2828
UmlenkwalzeDeflection roller
2929
UmlenkwalzeDeflection roller
3030th
UmlenkwalzeDeflection roller

Claims (17)

Verfahren zum gesteuerten Spannen einer Webkette beim Herstellen von insbesondere Cordgewebe für Fahrzeugluftreifen in einer Webanlage, wonach a) eine Vielzahl von Kettfäden eine Kettfadenschar bildet, und wobei die Kettfäden unter dem Zug einer drehangetriebenen Abzugswalze von in einem Spulengatter drehend gelagerten und selbstbremsenden Spulen kontinuierlich abgezogen werden, b) die Kettfadenschar vor dem Gewebebildeprozeß eine separate Vorrichtung passiert, in der die Kettfadenschar in Abhängigkeit vom Auftreten einer Unterbrechung des Webprozesses oder in Abhängigkeit vom Ausführen einer webtechnischen Operation (Tabbyweben, Zurückweben) unter weitgehendem Gespannthalten aus einer Bezugsebene ausgelenkt wird und bei Neustart des Webprozesses oder bei Ende der webtechnischen Operation das Auslenken der Fadenschar aufgehoben wird, c) die gespannte Kettfadenschar nach dem Verlassen der drehangetriebenen Abzugswalze dem Gewebebildeprozeß zugeführt wird und d) nach dem Gewebebildeprozeß das fertige Gewebe auf einem Wickler aufgewickelt wird, dadurch gekennzeichnet, daß e) in Abhängigkeit von Webprozeß-Stoppimpulsen die Kettfadenschar in wenigstens eine definierte Position relativ zur Bezugsebene gesteuert ausgelenkt wird und f) bei Webprozß-Startimpulsen die Kettfadenschar gesteuert in die Bezugsebene zurückbewegt wird. Process for the controlled tensioning of a weaving chain in the manufacture of in particular cord fabric for pneumatic vehicle tires in a weaving system, according to which a) a multiplicity of warp threads form a warp thread family, and the warp threads are continuously drawn off under the pull of a rotationally driven draw-off roller from self-braking bobbins rotatably mounted in a creel, b) the warp thread sheet passes through a separate device before the fabric forming process, in which the warp thread sheet is deflected from a reference level, depending on the occurrence of an interruption of the weaving process or depending on the execution of a weaving operation (tabby weaving, weaving back) and largely tensioned, and when the weaving process is restarted or at the end of the weaving operation, the deflection of the thread sheet is canceled, c) the tensioned warp thread sheet is fed to the fabric forming process after leaving the rotary driven take-off roller and d) after the fabric forming process, the finished fabric is wound on a winder, characterized in that e) the warp thread family is deflected in at least one defined position relative to the reference plane in a controlled manner as a function of weaving stop pulses and f) in the case of weaving process start pulses, the warp thread family is moved back into the reference plane in a controlled manner. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß bei Webprozeß-Stoppimpulsen die Fadenschar aus der Bezugsebene in eine zweite definierte Position relativ zur Bezugsebene ausgelenkt wird.Method according to Claim 1, characterized in that, in the case of weaving process stop pulses, the family of threads is deflected from the reference plane into a second defined position relative to the reference plane. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß bei einer webtechnischen Operation (Tabbyweben oder Zurückweben) die Fadenschar in die zweite oder eine dritte definierte Position relativ zur Bezugsebene ausgelenkt wird.A method according to claim 1, characterized in that during a technical weaving operation (tabby weaving or weaving back) the thread group is deflected into the second or a third defined position relative to the reference plane. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Fadenschar sowohl in der Bezugsebene als auch in den Auslenkpositionen gespannt ist.A method according to claim 1, characterized in that the family of threads is stretched both in the reference plane and in the deflection positions. Verfahren nach Anspruch 1 bis 4, dadurch gekennzeichnet, daß die Bezugsebene der Fadenschar der ersten definierten Position der Tänzerwelle entspricht.Method according to claims 1 to 4, characterized in that the reference plane of the thread group corresponds to the first defined position of the dancer shaft. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Zugspannung der Fadenschar gemessen wird und das Messergebnis zum Regeln des Auslenkens und des Zurückbewegens der Fadenschar verwendet wird.A method according to claim 1, characterized in that the tension of the thread sheet is measured and the measurement result is used to regulate the deflection and the back movement of the thread sheet. Webanlage zur Durchführung des Verfahrens nach Anspruch 1, bestehend aus wenigstens einem Spulengatter (4) mit einer Vielzahl von selbstbremsenden Spulen (5), mit vorzugsweise einem Lochbrett (14), einer Webmaschine (15) mit Abzugswalze (3), einer zwischen dem Spulengatter (4) und der Webmaschine (15) eingeordneten separaten Vorrichtung (8), in der eine Kettfadenschar (1) in einer durch eine Fadenführungseinrichtung (6) und durch zwei achsparallel voneinander beabstandet angeordnete Walzen (16,17) gebildeten Bezugsebene (7) geordnet geführt, in einer Kettwächtereinheit (25) überwacht und zwischen der ersten und der zweiten Walze (16,17) von einer Tänzerwelle (18), die endseitig mit jeweils einem Tragorgan (19,20) verbunden ist, gespannt gehalten wird und einem der Webmaschine (15) nachgeordneten Wickler (10) zum Aufwickeln des Gewebes (9), dadurch gekennzeichnet, daß die Tragorgane (19,20) mit wenigstens einer Stelleinheit (22) in Verbindung stehen, die die Tänzerwelle (18) zusammen mit der Kettfadenschar (1) aus der Bezugsebene (7) in wenigstens eine zweite oder dritte Position (12,13) ausgelenkt und in die Bezugsebene 7 zürückbewegt.Weaving system for carrying out the method according to claim 1, comprising at least one bobbin creel (4) with a plurality of self-braking bobbins (5), preferably with a perforated board (14), a weaving machine (15) with a take-off roller (3), one between the bobbin creel (4) and the weaving machine (15) are arranged in a separate device (8), in which a warp thread array (1) is arranged in a reference plane (7) formed by a thread guide device (6) and by axially parallel spaced rollers (16, 17) guided, monitored in a warp guard unit (25) and held between the first and the second roller (16, 17) by a dancer shaft (18), which is connected at the end to a support member (19, 20), and one of the weaving machines (15) downstream winder (10) for winding the fabric (9), characterized in that the support members (19, 20) are connected to at least one actuating unit (22) which connects the dancer shaft (18) together with the warp thread coulter (1) from the reference plane (7) in at least a second or third position (12,13) deflected and moved back into the reference plane 7. Webanlage nach Anspruch 7, dadurch gekennzeichnet, daß die Drehachse (18a) der Tänzerwelle (18) in der ersten Position (11) oberhalb der Bezugsebene (7) liegt. Weaving installation according to claim 7, characterized in that the axis of rotation (18a) of the dancer shaft (18) lies in the first position (11) above the reference plane (7). Webanlage nach Anspruch 7, dadurch gekennzeichnet, daß in der zweiten und dritten Position (12,13) die Drehachse (18a) der Tänzerwelle (18) unterhalb der Bezugsebene (7) liegt.Weaving installation according to claim 7, characterized in that in the second and third positions (12, 13) the axis of rotation (18a) of the dancer shaft (18) lies below the reference plane (7). Webanlage nach Anspruch 7, dadurch gekennzeichnet, daß die Vorrichtung (8) und die wenigstens eine Stelleinheit (22) aufeinem gemeinsamen Trägergestell (23) angeordnet sind.Weaving installation according to claim 7, characterized in that the device (8) and the at least one adjusting unit (22) are arranged on a common carrier frame (23). Webanlage nach Anspruch 10, dadurch gekennzeichnet, daß das Trägergestell (23) zwischen der Abzugswalze (3) der Webmaschine (15) und der Vorrichtung (8) Raum für einen Webergang (24) schafft.Weaving installation according to claim 10, characterized in that the support frame (23) creates space for a weaving run (24) between the draw-off roller (3) of the weaving machine (15) and the device (8). Webanlage nach Anspruch 11, dadurch gekennzeichnet, daß unterhalb des Weberganges (24) eine erste und zweite Umlenkwalze (28,29) im Trägergestell (23) drehbeweglich gelagert ist.Weaving installation according to claim 11, characterized in that a first and a second deflecting roller (28, 29) are rotatably mounted in the carrier frame (23) below the weaving aisle (24). Webanlage nach Anspruch 7, dadurch gekennzeichnet, daß die Stelleinheit (22) eine Kolben-Zylindereinheit mit Steuerung (26) ist.Weaving installation according to claim 7, characterized in that the adjusting unit (22) is a piston-cylinder unit with control (26). Webanlage nach Anspruch 7, dadurch gekennzeichnet, daß die Stelleinheit (22) eine elektromotorisch angetriebene Einheit mit Steuerung ist.Weaving installation according to claim 7, characterized in that the adjusting unit (22) is an electromotively driven unit with control. Webanlage nach Anspruch 7, dadurch gekennzeichnet, daß wenigstens ausgangsseitig der Vorrichtung (8) die Walze (16) eine Kettspannungs-Messeinrichtung (27) besitzt.Weaving installation according to claim 7, characterized in that the roller (16) has a warp tension measuring device (27) at least on the output side of the device (8). Webanlage nach Anspruch 7, dadurch gekennzeichnet, daß wenigstens einem der Trägerorgane (19,20) zu deren Lageerfassung eine Wegmesseinrichtung (27a) zugeordnet ist.Weaving installation according to claim 7, characterized in that a path measuring device (27a) is assigned to at least one of the carrier members (19, 20) for their position detection. Webanlage nach den Ansprüchen 13 und 14, dadurch gekennzeichnet, daß die Steuereinrichtung (26) und die Kettspannungs-Messeinrichtung (27) einen elektrischen Regelkreis bilden.Weaving installation according to claims 13 and 14, characterized in that the control device (26) and the warp tension measuring device (27) form an electrical control circuit.
EP98112449A 1997-08-14 1998-07-06 Method for controlled warp tensioning in the manufacture of more especially cord fabric for vehicle tyres on a weaving device and weaving device for carrying out this method Withdrawn EP0897026A3 (en)

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DE19735167 1997-08-14

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US6016850A (en) 2000-01-25
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JP2928241B2 (en) 1999-08-03

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