EP1161579B1 - False twister, especially for producing spiral filaments - Google Patents

False twister, especially for producing spiral filaments Download PDF

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Publication number
EP1161579B1
EP1161579B1 EP00918812A EP00918812A EP1161579B1 EP 1161579 B1 EP1161579 B1 EP 1161579B1 EP 00918812 A EP00918812 A EP 00918812A EP 00918812 A EP00918812 A EP 00918812A EP 1161579 B1 EP1161579 B1 EP 1161579B1
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EP
European Patent Office
Prior art keywords
filaments
twister
false twister
set forth
false
Prior art date
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
Application number
EP00918812A
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German (de)
French (fr)
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EP1161579A1 (en
Inventor
Bernd Heisel
Siegfried Doujak
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Drahtcord Saar GmbH and Co KG
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Drahtcord Saar GmbH and Co KG
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Publication of EP1161579A1 publication Critical patent/EP1161579A1/en
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Classifications

    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
    • D02G1/02—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
    • D02G1/02—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist
    • D02G1/04—Devices for imparting false twist
    • D02G1/08—Rollers or other friction causing elements
    • D02G1/082—Rollers or other friction causing elements with the periphery of at least one disc
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
    • D02G1/02—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist
    • D02G1/0206—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist by false-twisting
    • D02G1/0266—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist by false-twisting false-twisting machines
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B3/00—General-purpose machines or apparatus for producing twisted ropes or cables from component strands of the same or different material
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B7/00—Details of, or auxiliary devices incorporated in, rope- or cable-making machines; Auxiliary apparatus associated with such machines
    • D07B7/02—Machine details; Auxiliary devices
    • D07B7/025—Preforming the wires or strands prior to closing

Definitions

  • the present invention relates to a false twister, in particular for Manufacture of spiral filaments that have a rotatably drivable Twister with at least one of the filaments Has pulley.
  • the invention further relates to a method for the production of spiral filaments, especially under Use of such a false twister, in which at least two Filaments brought together and in a false twister with at least a deflection roller wrapped around by the filaments plastically deformed become.
  • filament is not to be considered restrictive, but rather should include both single and multiple filaments and strands.
  • a false twister and a manufacturing process of the aforementioned kind are from WO 97/12091 which goes back to the same applicant and WO 97/12092 and DE-A-195 35 595 are known.
  • the basic structure and the functioning of a false twister are also shown in JP-A-02-269885.
  • a false twist points a rotatably drivable twister with at least one deflection roller on.
  • Several are used to manufacture spiral filaments Filaments collected by a suitable device, in parallel passed through and to the axis of rotation of the twister the deflector pulley is looped.
  • a downstream puller serves through the false twister.
  • the rotation of the twister causes a plastic deformation of the Filaments brought about. This plastic deformation is already in the false twister.
  • the one located downstream of the false twister Extractor brings great forces to those that are already plastically deformed Filaments on. This affects the plastic deformation, and undesirable tensions are introduced into the filaments.
  • the object of the present invention is therefore that of the plastic Deformation forces acting on the filaments significantly reduce.
  • the filaments are wrapped around the pulley so that driving the pulley forces are transmitted to the filaments can. From the entry into the false twister up to and including the The filaments are twisted around each other and so support each other. In this area are beyond very large tensions in the filaments are required to achieve the desired to produce plastic deformation. In the area of the pulley until they run out of the false twister they become spiral deformed filaments separated from each other. The on the individual filaments acting forces are low because of the filaments looped pulley the necessary for moving the filaments Force is initiated. Depending on the application, can completely without a pull-out mechanism, so that the required space and investment costs can be reduced.
  • the deflection roller can advantageously be driven by rotating the twister. This allows a separate drive for the guide roller to be dispensed with, so that the mass of the twister and the investment costs can be kept low.
  • the speed of the driven Deflection roller and the speed of the twister in relation to each other adjustable. This enables an optimal adaptation to the respective Boundary conditions and a targeted setting of the spiral shape of the filaments to be produced.
  • a is to drive the deflection roller gearbox attached to the twister. This gear enables coupling the deflection roller to a separate drive element, so that flexibility is increased.
  • the transmission is in engagement with a gear wheel separate from the twister.
  • This construction is simple, robust, durable and inexpensive.
  • the gear wheel is advantageously upstream or downstream of the twister arranged. This arrangement enables optimal adaptation of the false twister according to the invention to different boundary conditions like the storage of the twister or the available standing installation space.
  • the gear wheel is stationary arranged.
  • a Coupling between the rotation of the pulley and the rotation of the Reached In particular, always sets the same speed ratio before that set by the translation of the gear and gear becomes.
  • a change in the speed of the twister becomes automatic transferred to the pulley, so that expensive control or Adjustments can be omitted. Fluctuations in speed of the twister are compensated automatically.
  • the gear is on a perforated disc attached to bring the filaments together. This can an additional bracket for the gear can be dispensed with, so that the investment costs decrease.
  • the gear is rotatable drivable.
  • the speed of the pulley independently can be set by the speed of the twister. This makes possible the production of different forms of spiral Filaments.
  • the flexibility of the false twister according to the invention is significantly increased.
  • the transmission advantageously has a rotatably mounted on the twister Wave on.
  • This wave makes it possible to dispense with large dimensions Gears with correspondingly large moments of inertia.
  • the shaft is essentially arranged parallel to the axis of rotation of the twister. This will Space requirement in the radial direction reduced.
  • the deflecting roller is radially projecting Provide flanges to guide the filaments. This will cause it to slip the filaments from the deflection roller prevented.
  • the deflection roller in an area between the flanges is advantageous conical.
  • the conical design of the pulley always pushes the incoming filaments to the same flange. On This will tangle the filaments in the area of the deflection roller reliably avoided.
  • the inventive method provides that for moving the Filaments required by the false twister at least partially is applied to the filaments in the false twister. hereby - becomes the force acting on the already plastically deformed filaments significantly reduced.
  • the force required to move the filaments is advantageous 10 to 100 percent in the false twister applied to the filaments.
  • the exact proportion the force applied to the filaments in the false twister depends on the individual case, in particular on the type of filament, the Diameter of the filaments, the material used and the desired one Spiral shape.
  • the method according to the invention enables an optimal adaptation to the different conditions of each Individual case.
  • the wrap angle of the filaments around the pulley especially the number of wraps, depending on the force applied in the false twister.
  • the maximum that can be transferred from the deflection roller to the filaments Force depends exponentially on the wrap angle.
  • the speed of the deflection roller and the speed of the twister with respect to each other Changing the spiral shape of the filaments varies. From the speed of the Twister calculates the time it takes to make a turn is required. The speed of the deflection roller together with its results Diameter the movement speed of the filaments the twister. From the time it takes to make a turn the pitch via the speed and the diameter of the pulley the spiral can be calculated.
  • the Speed of the deflection roller and / or the speed of the twister can Filaments of different pitches can be produced.
  • the spiral filaments after exiting the false twister directly on coils wound. This enables a downstream pull-out mechanism to be dispensed with, so that the space requirement and the investment costs decline.
  • Figure 1 shows schematically the manufacturing process for spiral filaments 11 '.
  • the filaments 11 are drawn off from spools 12 and via feed rollers 13 through a perforated disc 14 in the direction of arrow 32 guided by a false twister 10 and 18 around the pulleys False twist 10 looped.
  • the false twister 10 is, as schematically indicated, rotatably driven, so that the individual filaments 11 are twisted around one another and plastically deformed.
  • the filaments 11 ' are in a spiral shape and separate from each other.
  • FIG 2 shows a schematic diagram of the false twister 10 with driven deflection roller 18.
  • the false twister 10 has a twist 17, which in the arrow direction 29 about an axis of rotation 15 via a Motor 33 and a drive means 34 is rotatably driven.
  • the filaments 11 are inserted parallel to the axis of rotation 15 in the twister 17 and looped around the pulley 18.
  • the deflection roller 18 is mounted on a shaft 19, which over bearings 20, 21 is rotatably mounted on the twister 17.
  • the gear includes a gear 23, which is rotatably connected to a further gear wheel 24 via a shaft 26 connected is. This gear 24 meshes with a gear 25 the shaft 19 for the guide roller 18.
  • the shaft 26 is over bearings 27, 28 rotatable on the twister 17 substantially parallel to the latter Axis of rotation 15 arranged.
  • the gear 23, 24, 25, 26 is in engagement with another gear 22, which is separate from the twister.
  • the gear wheel 22 is downstream of the rotator 17 arranged.
  • the gear 22 can be stationary or rotatable in Arrow direction 43 can be driven.
  • the angular velocity of the deflection roller 18 depends on the transmission ratio between the gears 22 and 23 and 24 and 25.
  • This transmission ratio i is independent of the actual speed of the twist 17.
  • the deflection roller 18 can be driven in this way by rotating the rotator 17, the speed of the deflection roller 18 can be calculated from the speed of the twister 17 via the transmission ratio i.
  • the gear 22 can be rotatably driven, as schematically indicated by the arrow direction 43. In this way, the speed the driven pulley 18 and the speed of the twister 17 adjustable in relation to each other. If the gear 22 in the same Direction of rotation as the rotator 17 is driven, the The speed of the deflection roller 18 is reduced. With a drive in the opposite direction the speed of the deflection roller 18 is increased. This can different spiral shapes of the filaments 11 'can be set. From the speed of the twister 17, the time for the manufacture one turn can be calculated. The speed of the pulley 18 defines the speed of movement together with their diameter the filaments 11 in the direction of the arrow 32 by the twister 17 firmly. By varying the speed of the deflection roller 18 can thus the pitch or lay length of the spiral filaments 11 'is set become.
  • the driven deflection roller 18 brings about an application for moving the filaments 11 required force by the false twister 10 directly in the false twister 10.
  • the portion of the deflection roller 18 generated force depends on the individual case.
  • the guide roller 18 becomes the speed of movement of the filaments 11 set by the twister 10.
  • This speed of movement can be chosen slightly lower than the winding speed of the coils 16 in Figure 1.
  • the plastically deformed filaments 11 ′ downstream of the false twister 10 acted on with low voltages.
  • the speed the pulley 1 8 exactly on the winding speed of the spools 16 can be coordinated. In this case the load becomes plastic deformed filaments 11 'practically reduced to zero.
  • the speed of the deflection roller 18 and the rotator 17 can be a suitable Control or regulation, not shown, may be provided.
  • Figures 3 to 5 show a constructive embodiment of a False twister according to the invention 10. Same and functionally identical Components as in Figure 2 have been given the same reference numerals. For explanation, reference is made to the above statements.
  • the false twister 10 has a shaft 35, which by means of bearings 36, 37 is rotatably mounted about the axis 15. There is a groove for the drive 38 provided, in which the drive means 34 engages.
  • the filaments 11 are introduced in the direction of arrow 32 in the twister 17 to the Deflection roller 18 looped and then through an inner bore the shaft 35 continues to the coils 16.
  • the deflection roller 18 has two flanges 39 spaced apart from one another. 40 for guiding the filaments 11. In the area 41 between the Flanges 39, 40, the deflection roller 18 is conical. To this The filaments are always pushed in the direction of the flange 39. A tangling or tangling of the filaments 11 in the area the deflection roller 18 is reliably avoided.
  • the shaft 19 and the bearings 20, 21 is the twister 17 provided with a removable cover 42. The diameter of the cover 42 is larger than the outer diameter of the flanges 39, 40 of the deflection roller 18.
  • the gear 22 is fixed arranged and upstream of the rotator 17 on the perforated disc 14 attached to bring the filaments 11 together. This can an additional holder for the gear 22 can be dispensed with.
  • the filaments 11 are in the direction of arrow 32 through the perforated disk 14 introduced in the twister 17. In twister 17 they become one or wrapped around the deflection roller 18 several times.
  • the pulley 18 is driven in the direction of arrow 31, so that at least part of the required to move the filaments 11 through the false twister 10 Force applied in the false twister 10 to the filaments 11 becomes.
  • the wrap angle of the filaments 11 around the deflection roller 18, especially the number of wraps becomes dependent adjusted by the force applied in the false twister. Using only one deflection roller 18 can change the number of wraps become.
  • the wrap angle by the mutual arrangement and the diameter of the Deflection rollers 18 are changed. Thus, for every application inadmissible sliding of the filaments 11 on the deflection roller 18 prevented.
  • the present invention provides a significant reduction that after plastic deformation to the spiral Filaments reached 11 'acting forces.
  • the speed of the driven pulley 18 with the The rotational speed of the twister 17 can also have different spiral shapes of filaments 11 'are made so that the flexibility of the False twist 10 according to the invention is significantly increased.

Abstract

The invention relates to a false twister (10), especially for producing spiral filaments. The false twister comprises a rotatably driven twister (17) with at least one guide roller (18) around which the filaments (11) are wrapped. The aim of the invention is to reduce the forces that act upon the spiral filaments (11'). To this end, at least one guide roller (18) is driven. According to a method for producing spiral filaments (11) the power necessary for moving the filaments (11) through the false twister (10) is at least partially applied on the filaments (11) in the false twister (10).

Description

Die vorliegende Erfindung betrifft einen Falschdraller, insbesondere zum Herstellen von spiralförmigen Filamenten, der einen drehbar antreibbaren Verdreher mit mindestens einer von den Filamenten umschlungenen Umlenkrolle aufweist. Die Erfindung betrifft weiter ein Verfahren zum Herstellen von spiralförmigen Filamenten, insbesondere unter Verwendung eines derartigen Falschdrallers, bei dem mindestens zwei Filamente zusammengeführt und in einem Falschdraller mit mindestens einer von den Filamenten umschlungenen Umlenkrolle plastisch verformt werden.The present invention relates to a false twister, in particular for Manufacture of spiral filaments that have a rotatably drivable Twister with at least one of the filaments Has pulley. The invention further relates to a method for the production of spiral filaments, especially under Use of such a false twister, in which at least two Filaments brought together and in a false twister with at least a deflection roller wrapped around by the filaments plastically deformed become.

Der Begriff Filament ist hierbei nicht einschränkend zur werten, sondern soll sowohl Einzel- als auch Mehrfachfilamente und Litzen umfassen.The term filament is not to be considered restrictive, but rather should include both single and multiple filaments and strands.

Ein Falschdraller und ein Herstellungsverfahren der eingangs genannten Art sind aus den auf dieselbe Anmelderin zurückgehenden WO 97/12091 und WO 97/12092 sowie der DE-A-195 35 595 bekannt. Der grundsätzliche Aufbau und die Funktionsweise eines Falschdrallers sind ebenfalls in der JP-A-02-269885 dargestellt. Ein Falschdraller weist einen drehbar antreibbaren Verdreher mit mindestens einer Umlenkrolle auf. Zur Herstellung von spiralförmigen Filamenten werden mehrere Filamente durch eine geeignete Einrichtung zusammengefaßt, parallel zur Drehachse des Verdrehers durch diesen hindurchgeführt und um die Umlenkrolle des Verdrehers geschlungen. Zum Bewegen der Filamente durch den Falschdraller dient ein nachgeschaltetes Ausziehwerk. Durch die Drehung des Verdrehers wird eine plastische Verformung der Filamente herbeigeführt. Diese plastische Verformung liegt bereits in dem Falschdraller vor. Das stromabwärts des Falschdrallers angeordnete Ausziehwerk bringt große Kräfte auf die bereits plastisch verformten Filamente auf. Hierdurch wird die plastische Verformung beeinträchtigt, und es werden unerwünschte Spannungen in die Filamente eingebracht.A false twister and a manufacturing process of the aforementioned Kind are from WO 97/12091 which goes back to the same applicant and WO 97/12092 and DE-A-195 35 595 are known. The basic structure and the functioning of a false twister are also shown in JP-A-02-269885. A false twist points a rotatably drivable twister with at least one deflection roller on. Several are used to manufacture spiral filaments Filaments collected by a suitable device, in parallel passed through and to the axis of rotation of the twister the deflector pulley is looped. For moving the filaments a downstream puller serves through the false twister. The rotation of the twister causes a plastic deformation of the Filaments brought about. This plastic deformation is already in the false twister. The one located downstream of the false twister Extractor brings great forces to those that are already plastically deformed Filaments on. This affects the plastic deformation, and undesirable tensions are introduced into the filaments.

Aufgabe der vorliegenden Erfindung ist es daher, die nach der plastischen Verformung auf die Filamente wirkenden Kräfte wesentlich zu verringern.The object of the present invention is therefore that of the plastic Deformation forces acting on the filaments significantly reduce.

Erfindungsgemäß ist zur Lösung dieser Aufgabe bei einem Falschdraller der eingangs genannten Art vorgesehen, daß mindestens eine Umlenkrolle so antreibbar ist, daß die zum Bewegen der Filamente durch den Falschdraller erforderliche Kraft zumindest teilweise in dem Falschdraller auf die Filamente aufgebracht wird.According to the invention to solve this problem with a false twister of the type mentioned provided that at least one pulley is so drivable that to move the filaments through force required at least partially in the false twister False twist is applied to the filaments.

Die Filamente werden um die Umlenkrolle geschlungen, so daß durch ein Antreiben der Umlenkrolle Kräfte auf die Filamente übertragen werden können. Vom Einlauf in den Falschdraller bis einschließlich der Umschlingung der Umlenkrolle sind die Filamente umeinander verdrillt und stützen sich so gegenseitig ab. In diesem Bereich sind darüber hinaus sehr große Spannungen in den Filamenten erforderlich, um die gewünschte plastische Verformung zu erzeugen. Im Bereich von der Umlenkrolle bis zum Auslauf aus dem Falschdraller werden die spiralförmig verformten Filamente voneinander getrennt. Die auf die einzelnen Filamente wirkenden Kräfte sind gering, da durch die von den Filamenten umschlungene Umlenkrolle die zum Bewegen der Filamente erforderliche Kraft eingeleitet wird. In Abhängigkeit vom Anwendungsfall kann vollständig auf ein Ausziehwerk verzichtet werden, so daß auch der erforderliche Bauraum und die investitionskosten verringert werden.The filaments are wrapped around the pulley so that driving the pulley forces are transmitted to the filaments can. From the entry into the false twister up to and including the The filaments are twisted around each other and so support each other. In this area are beyond very large tensions in the filaments are required to achieve the desired to produce plastic deformation. In the area of the pulley until they run out of the false twister they become spiral deformed filaments separated from each other. The on the individual filaments acting forces are low because of the filaments looped pulley the necessary for moving the filaments Force is initiated. Depending on the application, can completely without a pull-out mechanism, so that the required space and investment costs can be reduced.

Vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung gehen aus den abhängigen Ansprüchen hervor.Advantageous refinements and developments of the invention go from the dependent claims.

Vorteilhaft ist die Umlenkrolle durch Drehung des Verdrehers antreibbar. Hierdurch kann auf einen gesonderten Antrieb für die Umlenkrolle verzichtet werden, so daß die Masse des Verdrehers und die Investitionskosten gering gehalten werden können.The deflection roller can advantageously be driven by rotating the twister. This allows a separate drive for the guide roller to be dispensed with, so that the mass of the twister and the investment costs can be kept low.

Nach einer vorteilhaften Weiterbildung sind die Drehzahl der angetriebenen Umlenkrolle und die Drehzahl des Verdrehers in bezug aufeinander verstellbar. Dies ermöglicht eine optimale Anpassung an die jeweiligen Randbedingungen und ein gezieltes Einstellen der Spiralform der herzustellenden Filamente.According to an advantageous development, the speed of the driven Deflection roller and the speed of the twister in relation to each other adjustable. This enables an optimal adaptation to the respective Boundary conditions and a targeted setting of the spiral shape of the filaments to be produced.

In vorteilhafter Ausgestaltung ist zum Antreiben der Umlenkrolle ein an dem Verdreher angebrachtes Getriebe vorgesehen. Dieses Getriebe ermöglicht ein Koppeln der Umlenkrolle mit einem separaten Antriebselement, so daß die Flexibilität erhöht wird. In an advantageous embodiment, a is to drive the deflection roller gearbox attached to the twister. This gear enables coupling the deflection roller to a separate drive element, so that flexibility is increased.

Gemäß einer vorteilhaften Weiterbildung steht das Getriebe in Eingriff mit einem von dem Verdreher getrennten Zahnrad. Diese Konstruktion ist einfach, robust, langlebig und kostengünstig.According to an advantageous development, the transmission is in engagement with a gear wheel separate from the twister. This construction is simple, robust, durable and inexpensive.

Vorteilhaft ist das Zahnrad stromaufwärts oder stromabwärts des Verdrehers angeordnet. Diese Anordnung ermöglicht eine optimale Anpassung des erfindungsgemäßen Falschdrallers an unterschiedliche Randbedingungen wie die Lagerung des Verdrehers oder den zur Verfügung stehenden Bauraum.The gear wheel is advantageously upstream or downstream of the twister arranged. This arrangement enables optimal adaptation of the false twister according to the invention to different boundary conditions like the storage of the twister or the available standing installation space.

In einer ersten vorteilhaften Ausgestaltung ist das Zahnrad feststehend angeordnet. Bei der Drehung des Verdrehers wird automatisch eine Kopplung zwischen der Drehung der Umlenkrolle und der Drehung des Verdrehers erreicht. Insbesondere legt stets dasselbe Drehzahlverhältnis vor, das durch die Übersetzung des Getriebes und Zahnrads festgelegt wird. Eine Änderung in der Drehzahl des Verdrehers wird automatisch auf die Umlenkrolle übertragen, so daß aufwendige Steueroder Stellvorgänge entfallen können. Schwankungen in der Drehzahl des Verdrehers werden automatisch ausgeglichen.In a first advantageous embodiment, the gear wheel is stationary arranged. When the twister is turned, a Coupling between the rotation of the pulley and the rotation of the Reached. In particular, always sets the same speed ratio before that set by the translation of the gear and gear becomes. A change in the speed of the twister becomes automatic transferred to the pulley, so that expensive control or Adjustments can be omitted. Fluctuations in speed of the twister are compensated automatically.

Gemäß einer vorteilhaften Weiterbildung ist das Zahnrad an einer Lochscheibe zum Zusammenführen der Filamente befestigt. Hierdurch kann auf eine zusätzliche Halterung für das Zahnrad verzichtet werden, so daß die Investitionskosten sinken.According to an advantageous development, the gear is on a perforated disc attached to bring the filaments together. This can an additional bracket for the gear can be dispensed with, so that the investment costs decrease.

In einer zweiten vorteilhaften Ausgestaltung ist das Zahnrad drehbar antreibbar. Wenn der Antrieb für das Zahnrad stillgesetzt wird, tritt die oben beschriebene automatische Kopplung zwischen der Drehzahl des Verdrehers und der Drehzahl der Umlenkrolle auf. Darüber hinaus kann durch ein Antreiben des Zahnrads die Drehzahl der Umlenkrolle unabhängig von der Drehzahl des Verdrehers eingestellt werden. Dies ermöglicht die Herstellung unterschiedlicher Formen von spiralförmigen Filamenten. Die Flexibilität des erfindungsgemäßen Falschdrallers wird wesentlich erhöht.In a second advantageous embodiment, the gear is rotatable drivable. When the drive for the gear is stopped, the Automatic coupling described above between the speed of the Twister and the speed of the pulley on. Furthermore, can by driving the gear the speed of the pulley independently can be set by the speed of the twister. this makes possible the production of different forms of spiral Filaments. The flexibility of the false twister according to the invention is significantly increased.

Vorteilhaft weist das Getriebe eine drehbar an dem Verdreher gelagerte Welle auf. Diese Welle ermöglicht den Verzicht auf groß dimensionierte Zahnräder mit entsprechend großen Massenträgheitsmomenten.The transmission advantageously has a rotatably mounted on the twister Wave on. This wave makes it possible to dispense with large dimensions Gears with correspondingly large moments of inertia.

Nach einer vorteilhaften Weiterbildung ist die Welle im wesentlichen parallel zur Drehachse des Verdrehers angeordnet. Hierdurch wird der Platzbedarf in radialer Richtung verringert.According to an advantageous development, the shaft is essentially arranged parallel to the axis of rotation of the twister. This will Space requirement in the radial direction reduced.

In vorteilhafter Ausgestaltung ist die Umlenkrolle mit radial abragenden Flanschen zur Führung der Filamente versehen. Hierdurch wird ein Abrutschen der Filamente von der Umlenkrolle verhindert.In an advantageous embodiment, the deflecting roller is radially projecting Provide flanges to guide the filaments. This will cause it to slip the filaments from the deflection roller prevented.

Vorteilhaft ist die Umlenkrolle in einem Bereich zwischen den Flanschen konisch ausgebildet. Die konische Ausbildung der Umlenkrolle drängt die einlaufenden Filamente stets zu demselben Flansch. Ein Verhaspeln der Filamente im Bereich der Umlenkrolle wird hierdurch zuverlässig vermieden.The deflection roller in an area between the flanges is advantageous conical. The conical design of the pulley always pushes the incoming filaments to the same flange. On This will tangle the filaments in the area of the deflection roller reliably avoided.

Das erfindungsgemäße Verfahren sieht vor, daß die zum Bewegen der Filamente durch den Falschdraller erforderliche Kraft zumindest teilweise in dem Falschdraller auf die Filamente aufgebracht wird. Hierdurch - wird die auf die bereits plastisch verformten Filamente wirkende Kraft wesentlich verringert. The inventive method provides that for moving the Filaments required by the false twister at least partially is applied to the filaments in the false twister. hereby - becomes the force acting on the already plastically deformed filaments significantly reduced.

Vorteilhaft wird die zum Bewegen der Filamente erforderliche Kraft zu 10 bis 100 Prozent in dem Falschdraller auf die Filamente aufgebracht. Der genaue Anteil der in dem Falschdraller auf die Filamente aufgebrachten Kraft hängt vom Einzelfall ab, insbesondere von der Art der Filamente, dem Durchmesser der Filamente, dem verwendeten Material sowie der gewünschten Spiralform. Das erfindungsgemäße Verfahren ermöglicht eine optimale Anpassung an die unterschiedlichen Bedingungen jedes Einzelfalls.The force required to move the filaments is advantageous 10 to 100 percent in the false twister applied to the filaments. The exact proportion the force applied to the filaments in the false twister depends on the individual case, in particular on the type of filament, the Diameter of the filaments, the material used and the desired one Spiral shape. The method according to the invention enables an optimal adaptation to the different conditions of each Individual case.

In vorteilhafter Ausgestaltung wird der Umschlingungswinkel der Filamente um die Umlenkrolle, insbesondere die Zahl der Umschlingungen, in Abhängigkeit von der im Falschdraller aufgebrachten Kraft eingestellt. Die von der Umlenkrolle maximal auf die Filamente übertragbare Kraft hängt exponentiell vom Umschlingungswinkel ab. Durch eine geeignete Anpassung des Umschlingungswinkels, insbesondere über die Zahl der Umschlingungen, wird ein unzulässiges Gleiten der Filamente gegenüber der Umlenkrolle verhindert.In an advantageous embodiment, the wrap angle of the filaments around the pulley, especially the number of wraps, depending on the force applied in the false twister. The maximum that can be transferred from the deflection roller to the filaments Force depends exponentially on the wrap angle. By a suitable one Adjustment of the wrap angle, especially via the Number of wraps will result in an impermissible sliding of the filaments prevented against the deflection roller.

Gemäß einer vorteilhaften Weiterbildung werden die Drehzahl der Umlenkrolle und die Drehzahl des Verdrehers in bezug aufeinander zum Verändern der Spiralform der Filamente variiert. Aus der Drehzahl des Verdrehers errechnet sich die Zeit, die für das Herstellen einer Windung erforderlich ist. Die Drehzahl der Umlenkrolle ergibt zusammen mit deren Durchmesser die Bewegungsgeschwindigkeit der Filamente durch den Verdreher. Aus der Zeit für das Herstellen einer Windung kann somit über die Drehzahl und den Durchmesser der Umlenkrolle die Ganghöhe der Spirale errechnet werden. Durch eine geeignete Variation der Drehzahl der Umlenkrolle und/oder der Drehzahl des Verdrehers können Filamente unterschiedlicher Ganghöhen hergestellt werden.According to an advantageous development, the speed of the deflection roller and the speed of the twister with respect to each other Changing the spiral shape of the filaments varies. From the speed of the Twister calculates the time it takes to make a turn is required. The speed of the deflection roller together with its results Diameter the movement speed of the filaments the twister. From the time it takes to make a turn the pitch via the speed and the diameter of the pulley the spiral can be calculated. By a suitable variation of the Speed of the deflection roller and / or the speed of the twister can Filaments of different pitches can be produced.

Nach einer vorteilhaften Ausgestaltung werden die spiralförmigen Filamente nach dem Austreten aus dem Falschdraller direkt auf Spulen aufgewickelt. Hierdurch kann auf ein nachgeschaltetes Ausziehwerk verzichtet werden, so daß der Platzbedarf und die Investitionskosten sinken.According to an advantageous embodiment, the spiral filaments after exiting the false twister directly on coils wound. This enables a downstream pull-out mechanism to be dispensed with, so that the space requirement and the investment costs decline.

Nachfolgend wird die Erfindung anhand von Ausführungsbeispielen näher beschrieben, die in schematischer Weise in den Zeichnungen dargestellt sind. Dabei zeigt:

Figur 1
eine schematische Darstellung des Herstellungsvorgangs unter Verwendung eines erfindungsgemäßen Falschdrallers;
Figur 2
ein schematisches Antriebsschaubild des Falschdrallers mit angetriebener Umlenkrolle;
Figur 3
einen Längsschnitt durch einen erfindungsgemäßen Falschdraller;
Figur 4
eine vergrößerte Einzelheit aus Figur 3 und
Figur 5
eine schematische Darstellung des Schnitts V-V aus Figur 4.
The invention is described in more detail below on the basis of exemplary embodiments, which are shown schematically in the drawings. It shows:
Figure 1
a schematic representation of the manufacturing process using a false twister according to the invention;
Figure 2
a schematic drive diagram of the false twister with driven pulley;
Figure 3
a longitudinal section through a false twister according to the invention;
Figure 4
an enlarged detail of Figure 3 and
Figure 5
a schematic representation of the section VV of Figure 4.

Figur 1 zeigt schematisch den Herstellungsablauf für spiralförmige Filamente 11'. Die Filamente 11 werden von Spulen 12 abgezogen und über Zuführrollen 13 durch eine Lochscheibe 14 in Pfeilrichtung 32 durch einen Falschdraller 10 geführt und um Umlenkrollen 18 des Falschdrallers 10 geschlungen. Der Falschdraller 10 ist, wie schematisch angedeutet, drehbar angetrieben, so daß die einzelnen Filamente 11 umeinander verdrillt und plastisch verformt werden. Beim Auslauf aus dem Falschdraller 10 liegen die Filamente 11' in Spiralform und voneinander getrennt vor. Die spiralförmigen Filamente 11' werden auf Spulen 16 aufgewickelt.Figure 1 shows schematically the manufacturing process for spiral filaments 11 '. The filaments 11 are drawn off from spools 12 and via feed rollers 13 through a perforated disc 14 in the direction of arrow 32 guided by a false twister 10 and 18 around the pulleys False twist 10 looped. The false twister 10 is, as schematically indicated, rotatably driven, so that the individual filaments 11 are twisted around one another and plastically deformed. At the outlet from the false twister 10, the filaments 11 'are in a spiral shape and separate from each other. The spiral filaments 11 'are opened Coils 16 wound.

Es können Mehrfachfilamente und Litzen in Spiralform mit dem erfindungsgemäßen Falschdraller hergestellt werden. Selbstverständlich können auch nicht nur zwei Filamente, sondern gegebenenfalls drei oder mehr Filamente gleichzeitig durch den Falschdraller 10 geführt und plastisch verformt werden.Multiple filaments and strands in Spiral shape can be produced with the false twister according to the invention. Of course, not only two filaments, but also optionally three or more filaments simultaneously through the False twist 10 performed and plastically deformed.

Figur 2 zeigt ein schematisches Schaubild des Falschdrallers 10 mit angetriebener Umlenkrolle 18. Der Falschdraller 10 weist einen Verdreher 17 auf, der in Pfeilrichtung 29 um eine Drehachse 15 über einen Motor 33 und ein Antriebsmittel 34 drehbar angetrieben ist. Die Filamente 11 werden parallel zur Drehachse 15 in den Verdreher 17 eingeführt und um die Umlenkrolle 18 geschlungen.Figure 2 shows a schematic diagram of the false twister 10 with driven deflection roller 18. The false twister 10 has a twist 17, which in the arrow direction 29 about an axis of rotation 15 via a Motor 33 and a drive means 34 is rotatably driven. The filaments 11 are inserted parallel to the axis of rotation 15 in the twister 17 and looped around the pulley 18.

Die Umlenkrolle 18 ist auf einer Welle 19 angebracht, die über Lagerungen 20, 21 drehbar an dem Verdreher 17 gelagert ist. Zum Antreiben der Umlenkrolle 18 ist ein an dem Verdreher 17 angebrachtes Getriebe 23, 24, 25, 26 vorgesehen. Das Getriebe umfaßt ein Zahnrad 23, das über eine Welle 26 drehfest mit einem weiteren Zahnrad 24 verbunden ist. Dieses Zahnrad 24 kämmt mit einem Zahnrad 25 auf der Welle 19 für die Umlenkrolle 18. Die Welle 26 ist über Lagerungen 27, 28 drehbar an dem Verdreher 17 im wesentlichen parallel zu dessen Drehachse 15 angeordnet. The deflection roller 18 is mounted on a shaft 19, which over bearings 20, 21 is rotatably mounted on the twister 17. To drive the deflection roller 18 is a gear attached to the twister 17 23, 24, 25, 26 provided. The gear includes a gear 23, which is rotatably connected to a further gear wheel 24 via a shaft 26 connected is. This gear 24 meshes with a gear 25 the shaft 19 for the guide roller 18. The shaft 26 is over bearings 27, 28 rotatable on the twister 17 substantially parallel to the latter Axis of rotation 15 arranged.

Das Getriebe 23, 24, 25, 26 steht in Eingriff mit einem weiteren Zahnrad 22, das von dem Verdreher getrennt ist. Bei der Ausführungsform gemäß Figur 2 ist das Zahnrad 22 stromabwärts des Verdrehers 17 angeordnet. Das Zahnrad 22 kann hierbei feststehen oder drehbar in Pfeilrichtung 43 antreibbar sein.The gear 23, 24, 25, 26 is in engagement with another gear 22, which is separate from the twister. In the embodiment 2, the gear wheel 22 is downstream of the rotator 17 arranged. The gear 22 can be stationary or rotatable in Arrow direction 43 can be driven.

Bei einer Drehung des Verdrehers 17 wird das Zahnrad 23 entlang des Zahnrads 22 abgewälzt. Die Welle 26 dreht sich bei feststehendem Zahnrad 22 in Pfeilrichtung 30. Diese Drehbewegung wird über die Zahnräder 24, 25 in eine Drehbewegung der Umlenkrolle 18 in Pfeilrichtung 31 umgesetzt. Auf diese Weise ist die Umlenkrolle 18 durch Drehung des Verdrehers 17 antreibbar. Die Winkelgeschwindigkeit der Umlenkrolle 18 hängt hierbei vom Übersetzungsverhältnis zwischen den Zahnrädern 22 und 23 sowie 24 und 25 ab. Das gesamte Übersetzungsverhältnis i errechnet sich wie folgt: i = i1 x i2 = z1/z2 x z3/z4, wobei z1, z2, z3 und z4 jeweils die Zähnezahlen der Zahnräder 22, 23, 24 und 25 sind. Dieses Übersetzungsverhältnis i ist unabhängig von der tatsächlichen Drehzahl des Verdrehers 17. Die Umlenkrolle 18 ist auf diese Weise durch Drehung des Verdrehers 17 antreibbar, wobei die Drehzahl der Umlenkrolle 18 sich über das Übersetzungsverhältnis i aus der Drehzahl des Verdrehers 17 errechnen läßt.When the rotator 17 rotates, the gear 23 is rolled along the gear 22. When the gear wheel 22 is stationary, the shaft 26 rotates in the direction of the arrow 30. In this way, the deflecting roller 18 can be driven by rotating the rotator 17. The angular velocity of the deflection roller 18 depends on the transmission ratio between the gears 22 and 23 and 24 and 25. The overall gear ratio i is calculated as follows: i = i 1 xi 2 = z 1 / z 2 xz 3 / z 4 . where z 1 , z 2 , z 3 and z 4 are the number of teeth of the gears 22, 23, 24 and 25, respectively. This transmission ratio i is independent of the actual speed of the twist 17. The deflection roller 18 can be driven in this way by rotating the rotator 17, the speed of the deflection roller 18 can be calculated from the speed of the twister 17 via the transmission ratio i.

Das Zahnrad 22 kann drehbar angetrieben werden, wie schematisch durch die Pfeilrichtung 43 angedeutet. Auf diese Weise sind die Drehzahl der angetriebenen Umlenkrolle 18 und die Drehzahl des Verdrehers 17 in bezug aufeinander verstellbar. Sofern das Zahnrad 22 in derselben Drehrichtung wie der Verdreher 17 angetrieben wird, wird die Drehzahl der Umlenkrolle 18 verringert. Bei einem Antrieb in Gegenrichtung wird die Drehzahl der Umlenkrolle 18 erhöht. Hierdurch können unterschiedliche Spiralformen der Filamente 11' eingestellt werden. Aus der Drehzahl des Verdrehers 17 kann die Zeit für das Herstellen einer Windung errechnet werden. Die Drehzahl der Umlenkrolle 18 legt zusammen mit deren Durchmesser die Bewegungsgeschwindigkeit der Filamente 11 in Pfeilrichtung 32 durch den Verdreher 17 fest. Durch eine Variation der Drehzahl der Umlenkrolle 18 kann somit die Ganghöhe bzw. Schlaglänge der spiralförmigen Filamente 11' eingestellt werden.The gear 22 can be rotatably driven, as schematically indicated by the arrow direction 43. In this way, the speed the driven pulley 18 and the speed of the twister 17 adjustable in relation to each other. If the gear 22 in the same Direction of rotation as the rotator 17 is driven, the The speed of the deflection roller 18 is reduced. With a drive in the opposite direction the speed of the deflection roller 18 is increased. This can different spiral shapes of the filaments 11 'can be set. From the speed of the twister 17, the time for the manufacture one turn can be calculated. The speed of the pulley 18 defines the speed of movement together with their diameter the filaments 11 in the direction of the arrow 32 by the twister 17 firmly. By varying the speed of the deflection roller 18 can thus the pitch or lay length of the spiral filaments 11 'is set become.

Die angetriebene Umlenkrolle 18 bewirkt ein Aufbringen der zum Bewegen der Filamente 11 durch den Falschdraller 10 erforderlichen Kraft direkt in dem Falschdraller 10. Der Anteil der von der Umlenkrolle 18 erzeugten Kraft hängt vom Einzelfall ab. Durch das Einstellen der Drehzahl der Umlenkrolle 18 wird die Bewegungsgeschwindigkeit der Filamente 11 durch den Verdreher 10 festgelegt. Diese Bewegungsgeschwindigkeit kann etwas geringer gewählt werden als die Aufwickelgeschwindigkeit der Spulen 16 in Figur 1. In diesem Fall werden die plastisch verformten Filamente 11' stromabwärts des Falschdrallers 10 mit geringen Spannungen beaufschlagt. Alternativ kann die Drehzahl der Umlenkrolle 1 8 genau auf die Aufwickelgeschwindigkeit der Spulen 16 abgestimmt werden. In diesem Fall wird die Belastung der plastisch verformten Filamente 11' praktisch auf Null reduziert. Zum Einstellen der Aufwickelgeschwindigkeit der Spulen 16 zur Anpassung an die Drehzahl der Umlenkrolle 18 und des Verdrehers 17 kann eine geeignete, nicht näher dargestellte Steuerung oder Regelung, vorgesehen sein. The driven deflection roller 18 brings about an application for moving the filaments 11 required force by the false twister 10 directly in the false twister 10. The portion of the deflection roller 18 generated force depends on the individual case. By adjusting the speed the guide roller 18 becomes the speed of movement of the filaments 11 set by the twister 10. This speed of movement can be chosen slightly lower than the winding speed of the coils 16 in Figure 1. In this case, the plastically deformed filaments 11 ′ downstream of the false twister 10 acted on with low voltages. Alternatively, the speed the pulley 1 8 exactly on the winding speed of the spools 16 can be coordinated. In this case the load becomes plastic deformed filaments 11 'practically reduced to zero. For setting the winding speed of the coils 16 to adapt to the The speed of the deflection roller 18 and the rotator 17 can be a suitable Control or regulation, not shown, may be provided.

Die Figuren 3 bis 5 zeigen eine konstruktive Ausführungsform eines erfindungsgemäßen Falschdrallers 10. Gleiche und funktionsidentische Bauteile wie in Figur 2 wurden mit denselben Bezugszeichen versehen. Zur Erläuterung wird auf obenstehende Ausführungen verwiesen.Figures 3 to 5 show a constructive embodiment of a False twister according to the invention 10. Same and functionally identical Components as in Figure 2 have been given the same reference numerals. For explanation, reference is made to the above statements.

Der Falschdraller 10 weist eine Welle 35 auf, die mittels Lagerungen 36, 37 drehbar um die Achse 15 gelagert ist. Zum Antrieb ist eine Nut 38 vorgesehen, in die das Antriebsmittel 34 eingreift. Die Filamente 11 werden in Pfeilrichtung 32 in den Verdreher 17 eingeführt, um die Umlenkrolle 18 geschlungen und anschließend durch eine Innenbohrung der Welle 35 zu den Spulen 16 weitergeführt.The false twister 10 has a shaft 35, which by means of bearings 36, 37 is rotatably mounted about the axis 15. There is a groove for the drive 38 provided, in which the drive means 34 engages. The filaments 11 are introduced in the direction of arrow 32 in the twister 17 to the Deflection roller 18 looped and then through an inner bore the shaft 35 continues to the coils 16.

Die Umlenkrolle 18 weist zwei zueinander beabstandete Flansche 39, 40 zur Führung der Filamente 11 auf. Im Bereich 41 zwischen den Flanschen 39, 40 ist die Umlenkrolle 18 konisch ausgebildet. Auf diese Weise werden die Filamente stets in Richtung zum Flansch 39 gedrängt. Ein Verhaspeln oder Verwickeln der Filamente 11 im Bereich der Umlenkrolle 18 wird zuverlässig vermieden. Zur Montage der Umlenkrolle 18, der Welle 19 und der Lagerungen 20, 21 ist der Verdreher 17 mit einem demontierbaren Deckel 42 versehen. Der Durchmesser des Deckels 42 ist größer als der Außendurchmesser der Flansche 39, 40 der Umlenkrolle 18.The deflection roller 18 has two flanges 39 spaced apart from one another. 40 for guiding the filaments 11. In the area 41 between the Flanges 39, 40, the deflection roller 18 is conical. To this The filaments are always pushed in the direction of the flange 39. A tangling or tangling of the filaments 11 in the area the deflection roller 18 is reliably avoided. For mounting the pulley 18, the shaft 19 and the bearings 20, 21 is the twister 17 provided with a removable cover 42. The diameter of the cover 42 is larger than the outer diameter of the flanges 39, 40 of the deflection roller 18.

Im dargestellten Ausführungsbeispiel ist das Zahnrad 22 feststehend angeordnet und stromaufwärts des Verdrehers 17 an der Lochscheibe 14 zum Zusammenführen der Filamente 11 befestigt. Hierdurch kann auf eine zusätzliche Halterung für das Zahnrad 22 verzichtet werden. In the illustrated embodiment, the gear 22 is fixed arranged and upstream of the rotator 17 on the perforated disc 14 attached to bring the filaments 11 together. This can an additional holder for the gear 22 can be dispensed with.

Die Filamente 11 werden in Pfeilrichtung 32 durch die Lochscheibe 14 in den Verdreher 17 eingeführt. Im Verdreher 17 werden sie einmal oder mehrmals um die Umlenkrolle 18 geschlungen. Die Umlenkrolle 18 wird in Pfeilrichtung 31 angetrieben, so daß zumindest ein Teil der zum Bewegen der Filamente 11 durch den Falschdraller 10 erforderlichen Kraft in dem Falschdraller 10 auf die Filamente 11 aufgebracht wird. Der Umschlingungswinkel der Filamente 11 um die Umlenkrolle 18, insbesondere die Zahl der Umschlingungen, wird in Abhängigkeit von der im Falschdraller aufgebrachten Kraft eingestellt. Bei Verwendung nur einer Umlenkrolle 18 kann die Zahl der Umschlingungen verändert werden. Bei Verwendung mehrerer Umlenkrollen 18, von denen eine oder mehrere drehbar angetrieben sind, kann der Umschlingungswinkel durch die gegenseitige Anordnung und den Durchmesser der Umlenkrollen 18 verändert werden. Somit wird für jeden Anwendungsfall ein unzulässiges Gleiten der Filamente 11 auf der Umlenkrolle 18 verhindert.The filaments 11 are in the direction of arrow 32 through the perforated disk 14 introduced in the twister 17. In twister 17 they become one or wrapped around the deflection roller 18 several times. The pulley 18 is driven in the direction of arrow 31, so that at least part of the required to move the filaments 11 through the false twister 10 Force applied in the false twister 10 to the filaments 11 becomes. The wrap angle of the filaments 11 around the deflection roller 18, especially the number of wraps, becomes dependent adjusted by the force applied in the false twister. Using only one deflection roller 18 can change the number of wraps become. When using several pulleys 18, of which one or more are rotatably driven, the wrap angle by the mutual arrangement and the diameter of the Deflection rollers 18 are changed. Thus, for every application inadmissible sliding of the filaments 11 on the deflection roller 18 prevented.

In Abhängigkeit von den Randbedingungen können die spiralförmigen Filamente 11' nach dem Austreten aus dem Falschdraller 10 direkt ohne Verwendung eines Ausziehwerks auf die Spulen 16 aufgewickelt werden. Der Verzicht auf ein nachgeschaltetes Ausziehwerk verringert die Investitionskosten und den Platzbedarf.Depending on the boundary conditions, the spiral Filaments 11 'directly after leaving the false twister 10 Using a puller wound on the coils 16 become. The elimination of a downstream pull-out mechanism is reduced investment costs and space requirements.

Insgesamt wird mit der vorliegenden Erfindung eine wesentliche Verringerung der nach der plastischen Verformung auf die spiralförmigen Filamente 11' wirkenden Kräfte erreicht. Durch eine geeignete Abstimmung der Drehzahl der angetriebenen Umlenkrolle 18 mit der Drehzahl des Verdrehers 17 können weiter unterschiedliche Spiralformen der Filamente 11' hergestellt werden, so daß die Flexibilität des erfindungsgemäßen Falschdrallers 10 deutlich erhöht wird.Overall, the present invention provides a significant reduction that after plastic deformation to the spiral Filaments reached 11 'acting forces. By an appropriate vote the speed of the driven pulley 18 with the The rotational speed of the twister 17 can also have different spiral shapes of filaments 11 'are made so that the flexibility of the False twist 10 according to the invention is significantly increased.

Claims (18)

  1. A false twister especially for producing spiral filaments (11), comprising a rotatably powered twister (17) including at least one guide pulley (18) wrapped around by said filaments, characterized in that at least one guide pulley (18) may be powered, so that the force needed to move said filaments (11) through said false twister (10) is provided in said false twister (10) to said filaments (11) at least in part.
  2. The false twister as set forth in claim 1, characterized in that said guide pulley (18) may be powered by rotation of said twister (17).
  3. The false twister as set forth in claim 1 or 2, characterized in that the rotary speed of said powered guide pulley (18) and the rotary speed of said twister (17) are variable relative to each other.
  4. The false twister as set forth in any of the claims 1 to 3, characterized in that a gear unit (23, 24, 25, 26) mounted on said twister (17) is provided for powering said guide pulley (18).
  5. The false twister as set forth in claim 4, characterized in that said gear unit (23, 24, 25, 26) mates with a gearwheel (22) separate from said twister (17).
  6. The false twister as set forth in claim 5, characterized in that said gearwheel (22) is arranged upstream or downstream of said twister (17).
  7. The false twister as set forth in claim 5 or 6, characterized in that said gearwheel (22) is arranged fixed.
  8. The false twister as set forth in any of said claims 5 to 7, characterized in that said gearwheel (22) is secured to a perforated disk (14) for combining said filaments (11).
  9. The false twister as set forth in claim 5 or 6, characterized in that said gearwheel (22) may be rotationally powered.
  10. The false twister as set forth in any of the claims 4 to 9, characterized in that said gear unit (23, 24, 25, 26) comprises a shaft (26) rotatably mounted on said twister (17).
  11. The false twister as set forth in claim 10, characterized in that said shaft (26) is arranged substantially parallel to the axis of rotation (15) of said twister (17).
  12. The false twister as set forth in any of the preceding claims, characterized in that said guide pulley (18) is provided with radial protruding flanges (39, 40) for guiding said filaments (11).
  13. The false twister as set forth in claim 12, characterized in that said guide pulley (18) is configured conically in the portion (41) between said flanges (39, 40).
  14. A method of producing spiral filaments (11), especially in making use of a false twister (10) as set forth in any of the preceding claims, wherein at least two filaments (11) are combined and plastically deformed in a false twister (10) including at least one guide pulley (18) wrapped by said filaments (11), characterized in that the force needed to move said filaments (11) through said false twister (10) is provided in said false twister (10) to said filaments (11) at least in part.
  15. The method as set forth in claim 14, characterized in that said force needed to move said filaments (11) is provided in said false twister (10) to said filaments in the range of 10 to 100 percent.
  16. The method as set forth in claim 14 or 15, characterized in that the wrap angle of said filaments (11) around said guide pulley (18), especially the wrap number, is set as a function of the force provided in said false twister.
  17. The method as set forth in any of the claims 14 to 16, characterized in that the rotary speed of said guide pulley (18) and the rotary speed of said twister (10) are varied relative to each other in changing the spiral shape of said filaments (11).
  18. The method as set forth in any of the claims 14 to 17, characterized in that said spiral filaments (11) are directly reeled on reels (16) after leaving said false twister (10).
EP00918812A 1999-03-18 2000-03-17 False twister, especially for producing spiral filaments Expired - Lifetime EP1161579B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19912192A DE19912192C2 (en) 1999-03-18 1999-03-18 False twist and method, in particular for producing spiral filaments
DE19912192 1999-03-18
PCT/EP2000/002420 WO2000056961A1 (en) 1999-03-18 2000-03-17 False twister, especially for producing spiral filaments

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EP1161579A1 EP1161579A1 (en) 2001-12-12
EP1161579B1 true EP1161579B1 (en) 2004-08-18

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US4385486A (en) * 1979-10-22 1983-05-31 Tokusen Kogyo Kabushiki Kaisha Apparatus for manufacturing open cord
JPH02269885A (en) * 1989-04-10 1990-11-05 Sumitomo Electric Ind Ltd Production of steel cord
JP3070260B2 (en) * 1991-06-21 2000-07-31 住友電気工業株式会社 Apparatus and method for producing metal cord for reinforcing rubber articles
EP0627521B1 (en) 1993-04-20 1997-11-19 N.V. Bekaert S.A. Treatment of steel cord
US5487262A (en) * 1993-04-20 1996-01-30 N.V. Bekaert S.A. Method and device for overtwisting and undertwisting a steel cord
DE19535595C2 (en) * 1995-09-25 2000-12-07 Drahtcord Saar Gmbh & Co Kg Process for producing a spiral wire filament, in particular for reinforcing rubber or plastic articles, device for carrying out the process and wire filament produced by the process
DE19535598A1 (en) * 1995-09-25 1997-03-27 Drahtcord Saar Gmbh & Co Kg Method of making a steel cord

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US6681555B1 (en) 2004-01-27
DE19912192A1 (en) 2000-09-28
KR20010112345A (en) 2001-12-20
PL350624A1 (en) 2003-01-27
CN1109143C (en) 2003-05-21
CZ20013236A3 (en) 2002-10-16
DE50007483D1 (en) 2004-09-23
AU3962800A (en) 2000-10-09
JP2002540304A (en) 2002-11-26
ATE274082T1 (en) 2004-09-15
KR100591707B1 (en) 2006-07-03
SK286113B6 (en) 2008-03-05
EP1161579A1 (en) 2001-12-12
BR0009095A (en) 2001-12-26
RU2220238C2 (en) 2003-12-27
SK12922001A3 (en) 2002-11-06
DE19912192C2 (en) 2001-03-08
JP4575598B2 (en) 2010-11-04
WO2000056961A1 (en) 2000-09-28
BR0009095B1 (en) 2011-01-25
ES2228495T3 (en) 2005-04-16
CZ299927B6 (en) 2008-12-29
PL202373B1 (en) 2009-06-30
CN1344338A (en) 2002-04-10
WO2000055405A2 (en) 2000-09-21

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