EP1161579A1 - False twister, especially for producing spiral filaments - Google Patents

False twister, especially for producing spiral filaments

Info

Publication number
EP1161579A1
EP1161579A1 EP00918812A EP00918812A EP1161579A1 EP 1161579 A1 EP1161579 A1 EP 1161579A1 EP 00918812 A EP00918812 A EP 00918812A EP 00918812 A EP00918812 A EP 00918812A EP 1161579 A1 EP1161579 A1 EP 1161579A1
Authority
EP
European Patent Office
Prior art keywords
filaments
twister
false twister
false
deflection roller
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.)
Granted
Application number
EP00918812A
Other languages
German (de)
French (fr)
Other versions
EP1161579B1 (en
Inventor
Bernd Heisel
Siegfried Doujak
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Drahtcord Saar GmbH and Co KG
Original Assignee
Drahtcord Saar GmbH and Co KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Drahtcord Saar GmbH and Co KG filed Critical Drahtcord Saar GmbH and Co KG
Publication of EP1161579A1 publication Critical patent/EP1161579A1/en
Application granted granted Critical
Publication of EP1161579B1 publication Critical patent/EP1161579B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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 the production of spiral filaments, which has a rotatable drivable twister with at least one deflection roller wrapped around the filaments.
  • the invention further relates to a method for producing spiral filaments, in particular using such a false twister, in which at least two filaments are brought together and plastically deformed in a false twister with at least one deflection roller wrapped by the filaments.
  • filament is not to be considered restrictive, but is intended to include both single and multiple filaments and strands.
  • a false twister and a manufacturing method of the type mentioned at the outset are known from WO 97/1 2091 and WO 97/1 2092, which go back to the same applicant.
  • the basic structure and mode of operation of a false twister are also shown in JP-A 02-269885.
  • a false twister has a rotatable drivable twister with at least one deflection roller.
  • several filaments are combined by a suitable device, passed through the twist parallel to the axis of rotation of the twist and wrapped around the deflection roller of the twist.
  • a downstream puller is used to move the filaments through the false twister.
  • the twist causes the filaments to be plastically deformed. This plastic deformation already exists in the false twister.
  • the pull-out mechanism arranged downstream of the false twister applies great forces to the already plastically deformed filaments. This affects the plastic deformation and undesirable tensions are introduced into the filaments.
  • the object of the present invention is therefore to significantly reduce the forces acting on the filaments after the plastic deformation.
  • this object is provided in a false twister of the type mentioned for the solution, that at least one order ⁇ deflection roller can be driven.
  • the force required to move the filaments through the false twister is at least partially applied to the filaments in the false twister.
  • the filaments are wrapped around the deflection roller, so that forces can be transferred to the filaments by driving the deflection roller. From the entry into the false twister up to and including the wrapping of the deflection roller, the filaments are twisted around each other and thus support each other. In addition, very high tensions in the filaments are required in this area in order to wanted to create plastic deformation.
  • the spirally deformed filaments are separated from one another in the area from the deflection roller to the outlet from the false twister. The forces acting on the individual filaments are low, since the force required to move the filaments is introduced by the deflection roller which is wrapped around the filaments. Depending on the application, a pull-out mechanism can be dispensed with completely, so that the required installation space and the investment costs are also reduced.
  • the deflection roller can advantageously be driven by rotating the twister. This makes it possible to dispense with a separate drive for the deflection roller, so that the mass of the twister and the investment costs can be kept low.
  • the rotational speed of the driven deflection roller and the rotational speed of the twister can be adjusted with respect to one another. This enables an optimal adaptation to the respective boundary conditions and a targeted adjustment of the spiral shape of the filaments to be produced.
  • a gearbox attached to the twister is provided for driving the deflection roller.
  • This gear enables the deflection roller to be coupled to a separate drive element, so that the flexibility is increased.
  • the gear is in engagement with a gear wheel that is separate from the twister. This construction is simple, robust, durable and inexpensive.
  • the gear wheel is advantageously arranged upstream or downstream of the rotator. This arrangement enables the false twister according to the invention to be optimally adapted to different boundary conditions such as the mounting of the twister or the available installation space.
  • the gear is fixed.
  • a coupling between the rotation of the deflection roller and the rotation of the twister is automatically achieved.
  • a change in the speed of the twister is automatically transferred to the deflection roller, so that complex control or adjustment processes can be omitted. Fluctuations in the speed of the twister are automatically compensated.
  • the gear wheel is fastened to a perforated disk for bringing the filaments together.
  • an additional holder for the gear can be dispensed with, so that the investment costs are reduced.
  • the gear wheel can be rotatably driven.
  • the automatic coupling described above occurs between the speed of the twister and the speed of the deflection roller.
  • the speed of the deflection roller can be set independently of the speed of the twister by driving the gearwheel. This enables the production of different shapes of spiral filaments.
  • the flexibility of the false twister according to the invention is significantly increased.
  • the transmission advantageously has a shaft which is rotatably mounted on the rotator. This shaft makes it possible to dispense with large gears with correspondingly large moments of inertia.
  • the shaft is arranged essentially parallel to the axis of rotation of the twister. This reduces the space requirement in the radial direction.
  • the deflection roller is provided with radially projecting flanges for guiding the filaments. This prevents the filaments from slipping off the deflection roller.
  • the deflection roller is advantageously conical in the area between the flanges.
  • the conical design of the deflection roller always pushes the incoming filaments to the same flange. This reliably prevents tangling of the filaments in the area of the deflection roller.
  • the method according to the invention provides that the force required to move the filaments through the false twister is at least partially applied to the filaments in the false twister.
  • the force acting on the already plastically deformed filaments is significantly reduced. 10 to 100 percent, in particular more than 50 percent, more than 70 percent, more than 85 percent or more than 97 percent of the force required to move the filaments is advantageously applied to the filaments in the false twister (10) .
  • the exact proportion of the force applied to the filaments in the false twister depends on the individual case, in particular on the type of filaments, the diameter of the filaments, the material used and the desired 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 deflection roller is set as a function of the force applied in the false twister.
  • the maximum force that can be transferred from the deflection roller to the filaments depends exponentially on the wrap angle.
  • a suitable adjustment of the wrap angle, in particular via the number of wraps, prevents inadmissible sliding of the filaments relative to the deflection roller.
  • the rotational speed of the deflection roller and the rotational speed of the twister are varied with respect to one another in order to change the spiral shape of the filaments.
  • the time required to produce a turn is calculated from the speed of the twister.
  • the speed of the deflection roller together with its diameter determines the speed of movement of the filaments by the twister. From the time for making a turn, the speed and the diameter of the deflection pulley can height of the spiral can be calculated.
  • the spiral filaments are wound directly onto spools after they emerge from the false twister.
  • a downstream pull-out unit can be dispensed with, so that the space requirement and the investment costs are reduced.
  • Figure 1 is a schematic representation of the manufacturing process using a false twister according to the invention
  • Figure 2 is a schematic drive diagram of the false twister with driven deflection roller
  • Figure 3 shows a longitudinal section through an inventive
  • FIG. 4 shows an enlarged detail from FIG. 3
  • FIG. 5 shows a schematic illustration of the section V-V from FIG. 4.
  • Figure 1 schematically shows the Heinrichsabiauf for spiral Fi ⁇ lamente 1 1 '.
  • the filaments 1 1 are drawn off from bobbins 1 2 and guided over feed rollers 1 3 through a perforated disc 1 4 in the direction of arrow 32 through a false twister 1 0 and looped around deflection rollers 1 8 of the false twister 1 0.
  • the fish twist 1 0 is like indicated by the table, rotatably driven, so that the individual filaments 1 1 are twisted around one another and plastically deformed.
  • Both single and multiple filaments and strands in spiral form can be produced with the false twister according to the invention.
  • the false twister according to the invention.
  • not only two filaments, but optionally three or more filaments can also be guided through the false twister 10 at the same time and plastically deformed.
  • FIG. 2 shows a schematic diagram of the false twister 1 0 with driven deflection roller 1 8.
  • the false twister 1 0 has a rotator 17, which is rotatably driven in the arrow direction 29 about an axis of rotation 15 by a motor 33 and a drive means 34.
  • the filaments 1 1 are inserted parallel to the axis of rotation 1 5 in the twister 1 7 and looped around the deflection roller 1 8.
  • the deflection roller 1 8 is mounted on a shaft 1 9, which is rotatably mounted on the rotator 1 7 via bearings 20, 21.
  • a gear 23, 24, 25, 26 attached to the twister 1 7 is provided to drive the deflection roller 1 8, a gear 23, 24, 25, 26 attached to the twister 1 7 is provided.
  • the transmission comprises a gear 23 which is connected in a rotationally fixed manner to a further gear 24 via a shaft 26. This gear 24 meshes with a gear 25 on the shaft 1 9 for the pulley.
  • the shaft 26 is arranged on bearings 27, 28 rotatably on the twister 1 7 substantially parallel to its axis of rotation 1 5.
  • the gear 23, 24, 25, 26 is in engagement with a further gear 22, which is separate from the twister.
  • the gear wheel 22 is arranged downstream of the rotator 17.
  • the gear wheel 22 can be stationary or can be driven rotatably in the direction of arrow 43.
  • This transmission ratio i is independent of the actual speed of the twist 17.
  • the deflection roller 1 8 can be driven in this way by rotating the twister 17, the speed of the deflection roller 18 being calculated from the speed of the twister 17 via the transmission ratio i leaves.
  • the gear wheel 22 can be rotatably driven, as indicated schematically by the direction of the arrow 43.
  • the speed of the driven pulley 1 8 and the speed of the twister 1 7 are adjustable with respect to each other. If the gear 22 in the same ben direction of rotation as the twist 1 7 is driven, the speed of the deflection roller 1 8 is reduced. With a drive in the opposite direction, the speed of the deflection roller 1 8 is increased. As a result, different spiral shapes of the filaments 1 1 'can be set. The time for producing a turn can be calculated from the speed of the twister 1 7. The speed of the deflecting roller 1 8 together with its diameter defines the speed of movement of the filaments 1 1 in the direction of arrow 32 by the twister 1 7. The pitch or lay length of the spiral filaments 11 'can thus be adjusted by varying the speed of the deflection roller 18.
  • the driven deflection roller 1 8 causes the force required for moving the filaments 1 1 by the false twister 1 0 to be applied directly in the false twister 1 0.
  • the proportion of the force generated by the deflection roller 1 8 depends on the individual case.
  • the speed of the deflection roller 1 8 the speed of movement of the filaments 1 1 is determined by the twister 10. This speed of movement can be selected to be somewhat lower than the winding speed of the spools 16 in FIG. 1. In this case, the plastically deformed filaments 1 1 'downstream of the false twister 10 are subjected to low voltages.
  • the speed of the deflection roller 1 8 can be precisely matched to the winding speed of the reels 1 6.
  • FIGS. 3 to 5 show a constructional embodiment of a false twister 1 0 according to the invention.
  • the same and functionally identical components as in FIG. 2 have been given the same reference numerals. For explanation, reference is made to the above statements.
  • the false twister 1 0 has a shaft 35 which is rotatably mounted about the axis 1 5 by means of bearings 36, 37.
  • a groove 38 is provided for the drive, in which the drive means 34 engages.
  • the filaments 11 are introduced in the direction of arrow 32 into the twister 17, looped around the deflection roller 18 and then passed through an inner bore of the shaft 35 to the coils 160.
  • the deflection roller 1 8 has two flanges 39, 40 spaced apart from one another for guiding the filaments 1 1. In the area 41 between the flanges 39, 40, the deflection roller 18 is conical. In this way, the filaments are always pushed towards the flange 39. A tangling or entangling of the filaments 1 1 in the region of the deflection roller 1 8 is reliably avoided.
  • the shaft 1 9 and the bearings 20, 21, the twister 1 7 is 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 1 8.
  • the gear wheel 22 is arranged in a fixed manner and fixed upstream of the rotator 17 to the perforated disk 14 for bringing the filaments 11 together.
  • an additional holder for the gear 22 can be dispensed with.
  • the filaments 1 1 are inserted in the arrow direction 32 through the perforated disc 1 4 into the twister 1 7.
  • the twister 1 7 they are looped once or several times around the deflection roller 1 8.
  • the deflection roller 1 8 is driven in the direction of arrow 31, so that at least part of the force required for moving the filaments 1 1 by the false twister 1 0 is applied to the filaments 1 1 in the false twister 1 0.
  • the wrap angle of the filaments 1 1 around the deflection roller 1 8, in particular the number of wraps, is set as a function of the force applied in the false twister. If only one deflection roller 1 8 is used, the number of wraps can be changed. When using several deflection rollers 1 8, one or more of which are rotatably driven, the wrap angle can be changed by the mutual arrangement and the diameter of the deflection rollers 1 8. In this way, an inadmissible sliding of the filaments 1 1 on the deflection roller 1 8 is prevented for each application.
  • the spiral filaments 1 1 ' can be wound onto the bobbins 1 6 directly after exiting the false twister 1 0 without using a puller. Dispensing with a downstream pull-out unit reduces investment costs and space requirements.
  • the present invention achieves a substantial reduction in the forces acting on the spiral filaments 11 ′ after the plastic deformation.
  • different spiral shapes can be men of the filaments 11 'are produced, so that the flexibility of the false twister 10 according to the invention is significantly increased.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Ropes Or Cables (AREA)
  • Wire Processing (AREA)
  • Artificial Filaments (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Spinning Or Twisting Of Yarns (AREA)

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

Falschdraller, insbesondere zum Herstellen von spiralförmigen Filamenten False twist, in particular for producing spiral filaments
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 the production of spiral filaments, which has a rotatable drivable twister with at least one deflection roller wrapped around the filaments. The invention further relates to a method for producing spiral filaments, in particular using such a false twister, in which at least two filaments are brought together and plastically deformed in a false twister with at least one deflection roller wrapped by the filaments.
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 is intended to 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/ 1 2091 sowie WO 97/1 2092 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 Verdre- hers durch diesen hindurchgeführt und um die Umlenkrolle des Verdre- hers geschlungen. Zum Bewegen der Filamente durch den Falschdraller dient ein nachgeschaltetes Ausziehwerk. Durch die Drehung des Ver- drehers 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 method of the type mentioned at the outset are known from WO 97/1 2091 and WO 97/1 2092, which go back to the same applicant. The basic structure and mode of operation of a false twister are also shown in JP-A 02-269885. A false twister has a rotatable drivable twister with at least one deflection roller. For production of spiral filaments, several filaments are combined by a suitable device, passed through the twist parallel to the axis of rotation of the twist and wrapped around the deflection roller of the twist. A downstream puller is used to move the filaments through the false twister. The twist causes the filaments to be plastically deformed. This plastic deformation already exists in the false twister. The pull-out mechanism arranged downstream of the false twister applies great forces to the already plastically deformed filaments. 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 to significantly reduce the forces acting on the filaments after the plastic deformation.
Erfindungsgemäß ist zur Lösung dieser Aufgabe bei einem Falschdraller der eingangs genannten Art vorgesehen, daß mindestens eine Um¬ lenkrolle antreibbar ist. Bei dem erfindungsgemäßen Herstellungsverfahren wird die zum Bewegen der Filamente durch den Falschdraller erforderliche Kraft zumindest teilweise in dem Falschdraller auf die Filamente aufgebracht.According to the invention this object is provided in a false twister of the type mentioned for the solution, that at least one order ¬ deflection roller can be driven. In the manufacturing method according to the invention, the force required to move the filaments through the false twister is at least partially applied to the filaments in the false twister.
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 ge- wünschte 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 deflection roller, so that forces can be transferred to the filaments by driving the deflection roller. From the entry into the false twister up to and including the wrapping of the deflection roller, the filaments are twisted around each other and thus support each other. In addition, very high tensions in the filaments are required in this area in order to wanted to create plastic deformation. The spirally deformed filaments are separated from one another in the area from the deflection roller to the outlet from the false twister. The forces acting on the individual filaments are low, since the force required to move the filaments is introduced by the deflection roller which is wrapped around the filaments. Depending on the application, a pull-out mechanism can be dispensed with completely, so that the required installation space and the investment costs are also reduced.
Vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung gehen aus den abhängigen Ansprüchen hervor.Advantageous refinements and developments of the invention emerge 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 makes it possible to dispense with a separate drive for the deflection roller, 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 rotational speed of the driven deflection roller and the rotational speed of the twister can be adjusted with respect to one another. This enables an optimal adaptation to the respective boundary conditions and a targeted adjustment 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. Gemäß einer vorteilhaften Weiterbildung steht das Getriebe in Eingriff mit einem von dem Verdreher getrennten Zahnrad. Diese Konstruktion ist einfach, robust, langlebig und kostengünstig.In an advantageous embodiment, a gearbox attached to the twister is provided for driving the deflection roller. This gear enables the deflection roller to be coupled to a separate drive element, so that the flexibility is increased. According to an advantageous further development, the gear is in engagement with a gear wheel that is 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 arranged upstream or downstream of the rotator. This arrangement enables the false twister according to the invention to be optimally adapted to different boundary conditions such as the mounting of the twister or the available 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 is fixed. When the twister rotates, a coupling between the rotation of the deflection roller and the rotation of the twister is automatically achieved. In particular, always presents the same speed ratio, which is determined by the translation of the transmission and gear. A change in the speed of the twister is automatically transferred to the deflection roller, so that complex control or adjustment processes can be omitted. Fluctuations in the speed of the twister are automatically compensated.
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 wheel is fastened to a perforated disk for bringing the filaments together. As a result, an additional holder for the gear can be dispensed with, so that the investment costs are reduced.
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 wheel can be rotatably driven. When the drive for the gear wheel is stopped, the automatic coupling described above occurs between the speed of the twister and the speed of the deflection roller. Furthermore, can the speed of the deflection roller can be set independently of the speed of the twister by driving the gearwheel. This enables the production of different shapes 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 shaft which is rotatably mounted on the rotator. This shaft makes it possible to dispense with large 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 arranged essentially parallel to the axis of rotation of the twister. This reduces the space requirement in the radial direction.
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 deflection roller is provided with radially projecting flanges for guiding the filaments. This prevents the filaments from slipping off the deflection roller.
Vorteilhaft ist die Umlenkrolle in dem 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 is advantageously conical in the area between the flanges. The conical design of the deflection roller always pushes the incoming filaments to the same flange. This reliably prevents tangling of the filaments in the area of the deflection roller.
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. Vorteilhaft wird die zum Bewegen der Filamente erforderliche Kraft zu 10 bis 100 Prozent, insbesondere zu mehr als 50 Prozent, zu mehr als 70 Prozent, zu mehr als 85 Prozent oder zu mehr als 97 Prozent in dem Falschdraller ( 1 0) 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 method according to the invention provides that the force required to move the filaments through the false twister is at least partially applied to the filaments in the false twister. As a result, the force acting on the already plastically deformed filaments is significantly reduced. 10 to 100 percent, in particular more than 50 percent, more than 70 percent, more than 85 percent or more than 97 percent of the force required to move the filaments is advantageously applied to the filaments in the false twister (10) . The exact proportion of the force applied to the filaments in the false twister depends on the individual case, in particular on the type of filaments, the diameter of the filaments, the material used and the desired 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 deflection roller, in particular the number of wraps, is set as a function of the force applied in the false twister. The maximum force that can be transferred from the deflection roller to the filaments depends exponentially on the wrap angle. A suitable adjustment of the wrap angle, in particular via the number of wraps, prevents inadmissible sliding of the filaments relative to 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 Gang- höhe 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 rotational speed of the deflection roller and the rotational speed of the twister are varied with respect to one another in order to change the spiral shape of the filaments. The time required to produce a turn is calculated from the speed of the twister. The speed of the deflection roller together with its diameter determines the speed of movement of the filaments by the twister. From the time for making a turn, the speed and the diameter of the deflection pulley can height of the spiral can be calculated. By suitable variation of the speed of the deflection roller and / or the speed of the twister, filaments of different pitch 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 are wound directly onto spools after they emerge from the false twister. As a result, a downstream pull-out unit can be dispensed with, so that the space requirement and the investment costs are reduced.
Nachfolgend wir die Erfindung anhand von Ausführungsbeispielen näher beschrieben, die in schematischer Weise in der Zeichnung dargestellt sind. Dabei zeigt:The invention is described in more detail below on the basis of exemplary embodiments, which are shown schematically in the drawing. It shows:
Figur 1 eine schematische Darstellung des Herstellungsvorgangs unter Verwendung eines erfindungsgemäßen Falschdrallers;Figure 1 is a schematic representation of the manufacturing process using a false twister according to the invention;
Figur 2 ein schematisches Antriebsschaubilds des Falschdrallers mit angetriebener Umlenkrolle;Figure 2 is a schematic drive diagram of the false twister with driven deflection roller;
Figur 3 einen Längsschnitt durch einen erfindungsgemäßenFigure 3 shows a longitudinal section through an inventive
Falschdraller;False twist;
Figur 4 eine vergrößerte Einzelheit aus Figur 3; undFIG. 4 shows an enlarged detail from FIG. 3; and
Figur 5 eine schematische Darstellung des Schnitts V-V aus Figur 4.FIG. 5 shows a schematic illustration of the section V-V from FIG. 4.
Figur 1 zeigt schematisch den Herstellungsabiauf für spiralförmige Fi¬ lamente 1 1 '. Die Filamente 1 1 werden von Spulen 1 2 abgezogen und über Zuführrollen 1 3 durch eine Lochscheibe 1 4 in Pfeilrichtung 32 durch einen Falschdraller 1 0 geführt und um Umlenkrollen 1 8 des Falschdrallers 1 0 geschlungen. Der Faischdraller 1 0 ist, wie Schema- tisch angedeutet, drehbar angetrieben, so daß die einzelnen Filamente 1 1 umeinander verdrillt und plastisch verformt werden. Beim Auslauf aus dem Falschdraller 1 0 liegen die Filamente 1 1 ' in Spiralform und voneinander getrennt vor. Die spiralförmigen Filamente 1 1 ' werden auf Spulen 1 6 aufgewickelt.Figure 1 schematically shows the Herstellungsabiauf for spiral Fi ¬ lamente 1 1 '. The filaments 1 1 are drawn off from bobbins 1 2 and guided over feed rollers 1 3 through a perforated disc 1 4 in the direction of arrow 32 through a false twister 1 0 and looped around deflection rollers 1 8 of the false twister 1 0. The fish twist 1 0 is like indicated by the table, rotatably driven, so that the individual filaments 1 1 are twisted around one another and plastically deformed. When leaving the false twister 1 0, the filaments 1 1 'are in spiral form and separated from one another. The spiral filaments 1 1 'are wound on spools 1 6.
Es können sowohl Einzel- als auch 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.Both single and multiple filaments and strands in spiral form can be produced with the false twister according to the invention. Of course, not only two filaments, but optionally three or more filaments can also be guided through the false twister 10 at the same time and plastically deformed.
Figur 2 zeigt ein schematisches Schaubild des Falschdrallers 1 0 mit angetriebener Umlenkrolle 1 8. Der Falschdraller 1 0 weist einen Verdreher 1 7 auf, der in Pfeilrichtung 29 um eine Drehachse 1 5 über einen Motor 33 und ein Antriebsmittel 34 drehbar angetrieben ist. Die Filamente 1 1 werden parallel zur Drehachse 1 5 in den Verdreher 1 7 eingeführt und um die Umlenkrolle 1 8 geschlungen.FIG. 2 shows a schematic diagram of the false twister 1 0 with driven deflection roller 1 8. The false twister 1 0 has a rotator 17, which is rotatably driven in the arrow direction 29 about an axis of rotation 15 by a motor 33 and a drive means 34. The filaments 1 1 are inserted parallel to the axis of rotation 1 5 in the twister 1 7 and looped around the deflection roller 1 8.
Die Umlenkrolle 1 8 ist auf einer Welle 1 9 angebracht, die über Lagerungen 20, 21 drehbar an dem Verdreher 1 7 gelagert ist. Zum Antreiben der Umlenkrolle 1 8 ist ein an dem Verdreher 1 7 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 1 9 für die Umlenkrolle. Die Welle 26 ist über Lagerungen 27, 28 drehbar an dem Verdreher 1 7 im wesentlichen parallel zu dessen Drehachse 1 5 angeordnet. 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 1 7 angeordnet. Das Zahnrad 22 kann hierbei feststehen oder drehbar in Pfeilrichtung 43 antreibbar sein.The deflection roller 1 8 is mounted on a shaft 1 9, which is rotatably mounted on the rotator 1 7 via bearings 20, 21. To drive the deflection roller 1 8, a gear 23, 24, 25, 26 attached to the twister 1 7 is provided. The transmission comprises a gear 23 which is connected in a rotationally fixed manner to a further gear 24 via a shaft 26. This gear 24 meshes with a gear 25 on the shaft 1 9 for the pulley. The shaft 26 is arranged on bearings 27, 28 rotatably on the twister 1 7 substantially parallel to its axis of rotation 1 5. The gear 23, 24, 25, 26 is in engagement with a further gear 22, which is separate from the twister. In the embodiment according to FIG. 2, the gear wheel 22 is arranged downstream of the rotator 17. The gear wheel 22 can be stationary or can be driven rotatably in the direction of arrow 43.
Bei einer Drehung des Verdrehers 1 7 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 1 8 in Pfeilrichtung 31 umgesetzt. Auf diese Weise ist die Umlenkrolle 1 8 durch Drehung des Verdrehers 1 7 antreibbar. Die Winkelgeschwindigkeit der Umlenkrolle 1 8 hängt hierbei vom Übersetzungsverhältnis zwischen den Zahnrädern 22 und 23 sowie 24 und 25 ab. Das gesamte Übersetzungsverhältnis i errechnet sich wie folgt:When the rotator 17 is rotated, the gear 23 is rolled along the gear 22. The shaft 26 rotates in the direction of the arrow 30 when the gear wheel 22 is stationary. This rotary movement is converted via the gear wheels 24, 25 into a rotary movement of the deflection roller 18 in the direction of the arrow 31. In this way, the deflection roller 1 8 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 total gear ratio i is calculated as follows:
i = i, x i2 = zΛlz2 x z3/z4,i = i, xi 2 = z Λ lz 2 xz 3 / z 4 ,
wobei z, , 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 1 7. Die Umlenkrolle 1 8 ist auf diese Weise durch Drehung des Verdrehers 1 7 antreibbar, wobei die Drehzahl der Umlenkrolle 1 8 sich über das Übersetzungsverhältnis i aus der Drehzahl des Verdrehers 1 7 errechnen läßt.where z,, 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 1 8 can be driven in this way by rotating the twister 17, the speed of the deflection roller 18 being calculated from the speed of the twister 17 via the transmission ratio i leaves.
Das Zahnrad 22 kann drehbar angetrieben werden, wie schematisch durch die Pfeilrichtung 43 angedeutet. Auf diese Weise sind die Drehzahl der angetriebenen Umlenkrolle 1 8 und die Drehzahl des Verdrehers 1 7 in bezug aufeinander verstellbar. Sofern das Zahnrad 22 in dersel- ben Drehrichtung wie der Verdreher 1 7 angetrieben wird, wird die Drehzahl der Umlenkrolle 1 8 verringert. Bei einem Antrieb in Gegenrichtung wird die Drehzahl der Umlenkrolle 1 8 erhöht. Hierdurch können unterschiedliche Spiralformen der Filamente 1 1 ' eingestellt werden. Aus der Drehzahl des Verdrehers 1 7 kann die Zeit für das Herstellen einer Windung errechnet werden. Die Drehzahl der Umlenkrolle 1 8 legt zusammen mit deren Durchmesser die Bewegungsgeschwindigkeit der Filamente 1 1 in Pfeilrichtung 32 durch den Verdreher 1 7 fest. Durch eine Variation der Drehzahl der Umlenkrolle 1 8 kann somit die Ganghöhe bzw. Schlaglänge der spiralförmigen Filamente 1 1 ' eingestellt werden.The gear wheel 22 can be rotatably driven, as indicated schematically by the direction of the arrow 43. In this way, the speed of the driven pulley 1 8 and the speed of the twister 1 7 are adjustable with respect to each other. If the gear 22 in the same ben direction of rotation as the twist 1 7 is driven, the speed of the deflection roller 1 8 is reduced. With a drive in the opposite direction, the speed of the deflection roller 1 8 is increased. As a result, different spiral shapes of the filaments 1 1 'can be set. The time for producing a turn can be calculated from the speed of the twister 1 7. The speed of the deflecting roller 1 8 together with its diameter defines the speed of movement of the filaments 1 1 in the direction of arrow 32 by the twister 1 7. The pitch or lay length of the spiral filaments 11 'can thus be adjusted by varying the speed of the deflection roller 18.
Die angetriebene Umlenkrolle 1 8 bewirkt ein Aufbringen der zum Bewegen der Filamente 1 1 durch den Falschdraller 1 0 erforderlichen Kraft direkt in dem Falschdraller 1 0. Der Anteil der von der Umlenkrolle 1 8 erzeugten Kraft hängt vom Einzelfall ab. Durch das Einstellen der Drehzahl der Umlenkrolle 1 8 wird die Bewegungsgeschwindigkeit der Filamente 1 1 durch den Verdreher 10 festgelegt. Diese Bewegungsgeschwindigkeit kann etwas geringer gewählt werden als die Aufwickelgeschwindigkeit der Spulen 1 6 in Figur 1 . In diesem Fall werden die plastisch verformten Filamente 1 1 ' stromabwärts des Falschdrallers 10 mit geringen Spannungen beaufschlagt. Alternativ kann die Drehzahl der Umlenkrolle 1 8 genau auf die Aufwickelgeschwindigkeit der Spulen 1 6 abgestimmt werden. In diesem Fall wird die Belastung der plastisch verformten Filamente 1 1 ' praktisch auf Null reduziert. Zum Einstellen der Aufwickelgeschwindigkeit der Spulen 1 6 zur Anpassung an die Drehzahl der Umlenkrolle 1 8 und des Verdrehers 1 7 kann eine geeignete, nicht näher dargestellte Steuerung oder Regelung, vorgesehen sein. Die Figuren 3 bis 5 zeigen eine konstruktive Ausführungsform eines erfindungsgemäßen Falschdrallers 1 0. Gleiche und funktionsidentische Bauteile wie in Figur 2 wurden mit denselben Bezugszeichen versehen. Zur Erläuterung wird auf obenstehende Ausführungen verwiesen.The driven deflection roller 1 8 causes the force required for moving the filaments 1 1 by the false twister 1 0 to be applied directly in the false twister 1 0. The proportion of the force generated by the deflection roller 1 8 depends on the individual case. By adjusting the speed of the deflection roller 1 8, the speed of movement of the filaments 1 1 is determined by the twister 10. This speed of movement can be selected to be somewhat lower than the winding speed of the spools 16 in FIG. 1. In this case, the plastically deformed filaments 1 1 'downstream of the false twister 10 are subjected to low voltages. Alternatively, the speed of the deflection roller 1 8 can be precisely matched to the winding speed of the reels 1 6. In this case, the load on the plastically deformed filaments 11 ′ is practically reduced to zero. To set the winding speed of the coils 1 6 to adapt to the speed of the deflection roller 1 8 and the twister 1 7, a suitable control system, not shown, can be provided. FIGS. 3 to 5 show a constructional embodiment of a false twister 1 0 according to the invention. The same and functionally identical components as in FIG. 2 have been given the same reference numerals. For explanation, reference is made to the above statements.
Der Falschdraller 1 0 weist eine Welle 35 auf, die mittels Lagerungen 36, 37 drehbar um die Achse 1 5 gelagert ist. Zum Antrieb ist eine Nut 38 vorgesehen, in die das Antriebsmittel 34 eingreift. Die Filamente 1 1 werden in Pfeilrichtung 32 in den Verdreher 1 7 eingeführt, um die Umlenkrolle 1 8 geschlungen und anschließend durch eine Innenbohrung der Welle 35 zu den Spulen 1 6 weitergeführt.The false twister 1 0 has a shaft 35 which is rotatably mounted about the axis 1 5 by means of bearings 36, 37. A groove 38 is provided for the drive, in which the drive means 34 engages. The filaments 11 are introduced in the direction of arrow 32 into the twister 17, looped around the deflection roller 18 and then passed through an inner bore of the shaft 35 to the coils 160.
Die Umlenkrolle 1 8 weist zwei zueinander beabstandete Flansche 39, 40 zur Führung der Filamente 1 1 auf. Im Bereich 41 zwischen den Flanschen 39, 40 ist die Umlenkrolle 1 8 konisch ausgebildet. Auf diese Weise werden die Filamente stets in Richtung zum Flansch 39 gedrängt. Ein Verhaspeln oder Verwickeln der Filamente 1 1 im Bereich der Umlenkrolle 1 8 wird zuverlässig vermieden. Zur Montage der Umlenkrolle 1 8, der Welle 1 9 und der Lagerungen 20, 21 ist der Verdreher 1 7 mit einem demontierbaren Deckel 42 versehen. Der Durchmesser des Deckels 42 ist größer als der Außendurchmesser der Flansche 39, 40 der Umlenkrolle 1 8.The deflection roller 1 8 has two flanges 39, 40 spaced apart from one another for guiding the filaments 1 1. In the area 41 between the flanges 39, 40, the deflection roller 18 is conical. In this way, the filaments are always pushed towards the flange 39. A tangling or entangling of the filaments 1 1 in the region of the deflection roller 1 8 is reliably avoided. To assemble the deflection roller 1 8, the shaft 1 9 and the bearings 20, 21, the twister 1 7 is 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 1 8.
Im dargestellten Ausführungsbeispiel ist das Zahnrad 22 feststehend angeordnet und stromaufwärts des Verdrehers 1 7 an der Lochscheibe 1 4 zum Zusammenführen der Filamente 1 1 befestigt. Hierdurch kann auf eine zusätzliche Halterung für das Zahnrad 22 verzichtet werden. Die Filamente 1 1 werden in Pfeilrichtung 32 durch die Lochscheibe 1 4 in den Verdreher 1 7 eingeführt. Im Verdreher 1 7 werden sie einmal oder mehrmals um die Umlenkrolle 1 8 geschlungen. Die Umlenkrolle 1 8 wird in Pfeilrichtung 31 angetrieben, so daß zumindest ein Teil der zum Bewegen der Filamente 1 1 durch den Falschdraller 1 0 erforderlichen Kraft in dem Falschdraller 1 0 auf die Filamente 1 1 aufgebracht wird. Der Umschlingungswinkel der Filamente 1 1 um die Umlenkrolle 1 8, insbesondere die Zahl der Umschlingungen, wird in Abhängigkeit von der im Falschdraller aufgebrachten Kraft eingestellt. Bei Verwendung nur einer Umlenkrolle 1 8 kann die Zahl der Umschlingungen verändert werden. Bei Verwendung mehrerer Umlenkrollen 1 8, von denen eine oder mehrere drehbar angetrieben sind, kann der Umschlingungswinkel durch die gegenseitige Anordnung und den Durchmesser der Umlenkrollen 1 8 verändert werden. Somit wird für jeden Anwendungsfall ein unzulässiges Gleiten der Filamente 1 1 auf der Umlenkrolle 1 8 verhindert.In the exemplary embodiment shown, the gear wheel 22 is arranged in a fixed manner and fixed upstream of the rotator 17 to the perforated disk 14 for bringing the filaments 11 together. As a result, an additional holder for the gear 22 can be dispensed with. The filaments 1 1 are inserted in the arrow direction 32 through the perforated disc 1 4 into the twister 1 7. In the twister 1 7 they are looped once or several times around the deflection roller 1 8. The deflection roller 1 8 is driven in the direction of arrow 31, so that at least part of the force required for moving the filaments 1 1 by the false twister 1 0 is applied to the filaments 1 1 in the false twister 1 0. The wrap angle of the filaments 1 1 around the deflection roller 1 8, in particular the number of wraps, is set as a function of the force applied in the false twister. If only one deflection roller 1 8 is used, the number of wraps can be changed. When using several deflection rollers 1 8, one or more of which are rotatably driven, the wrap angle can be changed by the mutual arrangement and the diameter of the deflection rollers 1 8. In this way, an inadmissible sliding of the filaments 1 1 on the deflection roller 1 8 is prevented for each application.
In Abhängigkeit von den Randbedingungen können die spiralförmigen Filamente 1 1 ' nach dem Austreten aus dem Falschdraller 1 0 direkt ohne Verwendung eines Ausziehwerks auf die Spulen 1 6 aufgewickelt werden. Der Verzicht auf ein nachgeschaltetes Ausziehwerk verringert die Investitionskosten und den Platzbedarf.Depending on the boundary conditions, the spiral filaments 1 1 'can be wound onto the bobbins 1 6 directly after exiting the false twister 1 0 without using a puller. Dispensing with a downstream pull-out unit reduces investment costs and space requirements.
Insgesamt wird mit der vorliegenden Erfindung eine wesentliche Verringerung der nach der plastischen Verformung auf die spiralförmigen Filamente 1 1 ' wirkenden Kräfte erreicht. Durch eine geeignete Abstimmung der Drehzahl der angetriebenen Umlenkrolle 1 8 mit der Drehzahl des Verdrehers 1 7 können weiter unterschiedliche Spiralfor- men der Filamente 11' hergestellt werden, so daß die Flexibilität des erfindungsgemäßen Falschdrallers 10 deutlich erhöht wird. Overall, the present invention achieves a substantial reduction in the forces acting on the spiral filaments 11 ′ after the plastic deformation. By suitably coordinating the speed of the driven deflection roller 1 8 with the speed of the twister 1 7, different spiral shapes can be men of the filaments 11 'are produced, so that the flexibility of the false twister 10 according to the invention is significantly increased.

Claims

Patentansprüche claims
1. Falschdraller, insbesondere zum Herstellen von spiralförmigen Filamenten (11), der einen drehbar antreibbaren Verdreher (17) mit mindestens einer von den Filamenten (11) umschlungenen Umlenkrolle (18) aufweist, dadurch gekennzeichnet, daß mindestens eine Umlenkrolle (18) antreibbar ist.1. false twist, in particular for the production of spiral filaments (11), which has a rotatably drivable rotator (17) with at least one of the filaments (11) wrapped around pulley (18), characterized in that at least one pulley (18) can be driven .
2. Falschdraller nach Anspruch 1, dadurch gekennzeichnet, daß die Umlenkrolle (18) durch Drehung des Verdrehers (17) antreibbar ist.2. false twister according to claim 1, characterized in that the deflection roller (18) by rotation of the twister (17) can be driven.
3. Falschdraller nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Drehzahl der angetriebenen Umlenkrolle (18) und die Drehzahl des Verdrehers (17) in bezug aufeinander verstellbar sind.3. false twister according to claim 1 or 2, characterized in that the speed of the driven deflection roller (18) and the speed of the twister (17) are adjustable with respect to each other.
4. Falschdraller nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß zum Antreiben der Umlenkrolle (18) ein an dem Verdreher (17) angebrachtes Getriebe (23, 24, 25, 26) vorgesehen ist.4. false twister according to one of claims 1 to 3, characterized in that a drive (23), 24, 25, 26) is provided for driving the deflection roller (18).
5. Falschdraller nach Anspruch 4, dadurch gekennzeichnet, daß das Getriebe (23, 24, 25, 26) in Eingriff mit einem von dem Verdreher (17) getrennten Zahnrad (22) steht. 5. false twister according to claim 4, characterized in that the transmission (23, 24, 25, 26) is in engagement with a gear (22) separate from the twister (17).
6. Falschdraller nach Anspruch 5, dadurch gekennzeichnet, daß das Zahnrad (22) stromaufwärts oder stromabwärts des Verdrehers ( 1 7) angeordnet ist.6. false twister according to claim 5, characterized in that the gear (22) is arranged upstream or downstream of the twister (1 7).
7. Falschdraller nach Anspruch 5 oder 6, dadurch gekennzeichnet, daß das Zahnrad (22) feststehend angeordnet ist.7. false twister according to claim 5 or 6, characterized in that the gear (22) is arranged fixed.
8. Falschdraller nach einem der Ansprüche 5 bis 7, dadurch gekennzeichnet, daß das Zahnrad (22) an einer Lochscheibe ( 1 4) zum Zusammenführen der Filamente ( 1 1 ) befestigt ist.8. false twister according to one of claims 5 to 7, characterized in that the gear (22) on a perforated disc (1 4) for merging the filaments (1 1) is attached.
9. Falschdraller nach Anspruch 5 oder 6, dadurch gekennzeichnet, daß das Zahnrad (22) drehbar antreibbar ist.9. false twister according to claim 5 or 6, characterized in that the gear (22) is rotatably driven.
1 0. Falschdraller nach einem der Ansprüche 4 bis 9, dadurch gekennzeichnet, daß das Getriebe (23, 24, 25, 26) eine drehbar an dem Verdreher ( 1 7) gelagerte Welle (26) aufweist.1 0. false twister according to one of claims 4 to 9, characterized in that the gear (23, 24, 25, 26) has a shaft (26) which is rotatably mounted on the twister (1 7).
1 1 . Falschdraller nach Anspruch 10, dadurch gekennzeichnet, daß die Welle (26) im wesentlichen parallel zur Drehachse (1 5) des Verdrehers ( 1 7) angeordnet ist.1 1. False twister according to claim 10, characterized in that the shaft (26) is arranged essentially parallel to the axis of rotation (1 5) of the twister (1 7).
1 2. Falschdraller nach einem der vorhergehenden Ansprüche, da¬ durch gekennzeichnet, daß die Umlenkrolle ( 1 8) mit radial abragenden Flanschen (39, 40) zur Führung der Filamente (1 1 ) versehen ist. 1 2. The false twister according to any one of the preceding claims, ¬ by in that the deflection roller is provided (1 8) having radially projecting flanges (39, 40) for guiding the filaments (1: 1).
13. Falschdraller nach Anspruch 12, dadurch gekennzeichnet, daß die Umlenkrolle (18) in dem Bereich (41) zwischen den Flanschen (39, 40) konisch ausgebildet ist.13. false twister according to claim 12, characterized in that the deflection roller (18) in the region (41) between the flanges (39, 40) is conical.
14. Verfahren zum Herstellen von spiralförmigen Filamenten (11), insbesondere unter Verwendung eines Falschdrallers (10) nach einem der vorhergehenden Ansprüche, wobei mindestens zwei Filamente (11) zusammengeführt und in einem Falschdraller (10) mit mindestens einer von den Filamenten (11) umschlungenen Umlenkrolle (18) plastisch verformt werden, dadurch gekennzeichnet, daß die zum Bewegen der Filamente (11) durch den Falschdraller (10) erforderliche Kraft zumindest teilweise in dem Falschdraller (10) auf die Filamente (11) aufgebracht wird.14. A method for producing spiral filaments (11), in particular using a false twister (10) according to one of the preceding claims, wherein at least two filaments (11) are brought together and in a false twister (10) with at least one of the filaments (11) looped pulley (18) are plastically deformed, characterized in that the force required to move the filaments (11) by the false twister (10) is at least partially applied to the filaments (11) in the false twister (10).
15. Verfahren nach Anspruch 14, dadurch gekennzeichnet, daß die zum Bewegen der Filamente (11) erforderliche Kraft zu 10 bis 100 Prozent, insbesondere zu mehr als 50 Prozent, zu mehr als 70 Prozent, zu mehr als 85 Prozent oder zu mehr als 97 Prozent in dem Falschdraller (10) auf die Filamente (11) aufgebracht wird.15. The method according to claim 14, characterized in that the force required to move the filaments (11) to 10 to 100 percent, in particular more than 50 percent, more than 70 percent, more than 85 percent or more than 97 Percent in the false twister (10) is applied to the filaments (11).
16. Verfahren nach Anspruch 14 oder 15, dadurch gekennzeichnet, daß der Umschlingungswinkel der Filamente (11) um die Umlenkrolle (18), insbesondere die Zahl der Umschlingungen, in Abhängigkeit von der im Falschdraller (10) aufgebrachten Kraft eingestellt wird.16. The method according to claim 14 or 15, characterized in that the wrap angle of the filaments (11) around the deflection roller (18), in particular the number of wraps, is set depending on the force applied in the false twister (10).
17. Verfahren nach einem der Ansprüche 14 bis 16, dadurch gekennzeichnet, daß die Drehzahl der Umlenkrolle (18) und die Drehzahl des Verdrehers (10) in bezug aufeinander zum Verändern der Spiralform der Filamente (11) variiert werden.17. The method according to any one of claims 14 to 16, characterized in that the speed of the deflecting roller (18) and the The rotational speed of the twister (10) can be varied with respect to one another in order to change the spiral shape of the filaments (11).
18. Verfahren nach einem der Ansprüche 14 bis 17, dadurch gekennzeichnet, daß die spiralförmigen Filamente (11) nach dem Austreten aus dem Falschdraller (10) direkt auf Spulen (16) aufgewickelt werden. 18. The method according to any one of claims 14 to 17, characterized in that the spiral filaments (11) after exiting the false twister (10) are wound directly onto spools (16).
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
DE19912192 1999-03-18
DE19912192A DE19912192C2 (en) 1999-03-18 1999-03-18 False twist and method, in particular for producing spiral filaments
PCT/EP2000/002420 WO2000056961A1 (en) 1999-03-18 2000-03-17 False twister, especially for producing spiral filaments

Publications (2)

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

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EP00918812A Expired - Lifetime EP1161579B1 (en) 1999-03-18 2000-03-17 False twister, especially for producing spiral filaments

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US (1) US6681555B1 (en)
EP (1) EP1161579B1 (en)
JP (1) JP4575598B2 (en)
KR (1) KR100591707B1 (en)
CN (1) CN1109143C (en)
AT (1) ATE274082T1 (en)
AU (1) AU3962800A (en)
BR (1) BR0009095B1 (en)
CZ (1) CZ299927B6 (en)
DE (2) DE19912192C2 (en)
ES (1) ES2228495T3 (en)
PL (1) PL202373B1 (en)
RU (1) RU2220238C2 (en)
SK (1) SK286113B6 (en)
WO (2) WO2000055405A2 (en)

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FR3028873B1 (en) * 2014-11-25 2016-12-23 Michelin & Cie FRACTIONAL INSTALLATION
CN106195139A (en) * 2016-07-26 2016-12-07 贵州钢绳股份有限公司 A kind of one-tenth, Bunching machine step by-step variable gear
FR3099192A1 (en) * 2019-07-25 2021-01-29 Compagnie Generale Des Etablissements Michelin Process for splitting and reassembling a two-layer assembly
FR3099189A1 (en) * 2019-07-25 2021-01-29 Compagnie Generale Des Etablissements Michelin Fractionation and reassembly process

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Also Published As

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CZ20013236A3 (en) 2002-10-16
DE19912192C2 (en) 2001-03-08
KR20010112345A (en) 2001-12-20
EP1161579B1 (en) 2004-08-18
KR100591707B1 (en) 2006-07-03
RU2220238C2 (en) 2003-12-27
US6681555B1 (en) 2004-01-27
WO2000055405A2 (en) 2000-09-21
CN1344338A (en) 2002-04-10
PL350624A1 (en) 2003-01-27
BR0009095A (en) 2001-12-26
CN1109143C (en) 2003-05-21
ES2228495T3 (en) 2005-04-16
PL202373B1 (en) 2009-06-30
JP4575598B2 (en) 2010-11-04
DE50007483D1 (en) 2004-09-23
SK12922001A3 (en) 2002-11-06
WO2000056961A1 (en) 2000-09-28
AU3962800A (en) 2000-10-09
SK286113B6 (en) 2008-03-05
ATE274082T1 (en) 2004-09-15
CZ299927B6 (en) 2008-12-29
BR0009095B1 (en) 2011-01-25
DE19912192A1 (en) 2000-09-28
JP2002540304A (en) 2002-11-26

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