EP0295668B1 - Device for producing randomly arranged and/or designed effects on a yarn - Google Patents

Device for producing randomly arranged and/or designed effects on a yarn Download PDF

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Publication number
EP0295668B1
EP0295668B1 EP88109583A EP88109583A EP0295668B1 EP 0295668 B1 EP0295668 B1 EP 0295668B1 EP 88109583 A EP88109583 A EP 88109583A EP 88109583 A EP88109583 A EP 88109583A EP 0295668 B1 EP0295668 B1 EP 0295668B1
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EP
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Prior art keywords
pulley
roller
thread
pressing
contact pressure
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EP88109583A
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German (de)
French (fr)
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EP0295668A1 (en
Inventor
Friedrich Aalderink
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Eno Electronic GmbH
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Eno Electronic GmbH
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    • 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
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/22—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
    • D02G3/34—Yarns or threads having slubs, knops, spirals, loops, tufts, or other irregular or decorative effects, i.e. effect yarns

Definitions

  • Yarns with certain irregularities e.g. Pimples or knots.
  • a certain desired optical effect is achieved in the finished woven or knitted fabric.
  • These irregularities are achieved by one or more threads of an effect device, e.g. an air texturing device, is supplied in chronological succession at different speeds. It is essential that the effects achieved with this occur in a random sequence and that no periodicity is obtained. In this case, undesirable patterns ("formation") would result in the weaving of such a yarn.
  • a texturing device is known from US Pat. No. 3,805,344, in which a thread to be textured is conveyed from a supply roll via a delivery device into a pressure medium jet of a texturing device. The thread guided by the pressure medium jet is then passed over a tension fork and is wound up by a take-up spool.
  • the delivery device contains two rollers which are driven at different peripheral speeds, namely a first roller which rotates at a relatively slow peripheral speed and a second roller whose peripheral speed is significantly higher.
  • the thread runs past the two rollers.
  • the thread is either pressed onto the first one by pressure rollers Role of the delivery device pressed or to the second role. In the former case, it is fed to the texturing device at a relatively slow speed. In the latter case, the thread is fed at a significantly increased speed.
  • the two pressure rollers are seated on a pivotable bearing for pressing the thread onto the first and second rollers. two-armed lever.
  • This lever is held in a normal position by a spring, in which the thread is pressed against the first roller of the delivery device by a pressure roller and the other pressure roller is lifted off.
  • the lever is pivoted by a lifting magnet against the action of the spring into another position in which the one pressure roller is lifted from the first roller of the delivery device and the other pressure roller presses the thread onto the second roller.
  • the lifting magnet or the magnetic couplings are controlled by control units which work with punch cards. After running through such a punch card (repeat), the repeats chronological order of the control commands. This can lead to the pattern formation (formation) in the tissue described at the beginning. Program errors are provided to avoid such formation. However, this does not always lead to success, so that end products of second choice are created.
  • the lengths of the effects produced on the yarn should be in a certain range and should not exceed an upper limit.
  • the delivery speed should be as high as possible in order to increase the performance of the machine.
  • a maximum delivery speed is predetermined by the response time of the switchover.
  • the invention has for its object to enable an increase in the delivery speed with a predetermined upper limit of the length of the generated effects in a device of the type mentioned for generating randomly arranged effects on a yarn by shortening the response time when switching the speeds of the delivery device.
  • the invention is further based on the object of preventing the occurrence of formations in a device of the type mentioned at the outset.
  • Another object of the invention is to increase the number of possible variations in a device of the type mentioned in the introduction.
  • the control device is preferably an electronic random generator.
  • a reduction in the moving masses can be achieved in particular in that each of the pressure rollers is mounted directly on the armature of the lifting magnet in question.
  • the electronic random generator allows the display of a practically infinite repeat. There is therefore no periodic repetition of a pattern of the effects on the yarn, so that no formation occurs.
  • step roller creates additional variables, which considerably increases the number of possible variations compared to the prior art.
  • 10 denotes a supply spool for a thread 12 to be processed.
  • the thread 12 is guided through a thread guide 14 past a first roll (delivery roll) 16 and a second roll (effect roll) 18.
  • the thread 12 then runs through a further, upper thread guide 20 to an effect device 22.
  • the first roller 16 is driven at a relatively low peripheral speed.
  • the second roller 18 has a much higher peripheral speed.
  • the thread 12 can be pressed against the first roller 16 by a first pressure roller 24.
  • the first roller 16 is provided with a rubber surface, so that the thread 12 is delivered in this case at the peripheral speed of the first roller 16.
  • the thread 12 can be pressed against the second roller 18 by a second pressure roller 26, so that it is delivered at the higher peripheral speed of the second roller 18.
  • the first pressure roller 24 can be moved into the pressure position shown in FIG. 1 by a lifting magnet 28.
  • the second pressure roller 26 can be moved by a lifting magnet 30 into a pressure position in which it presses the thread 12 onto the second roller 18.
  • the two solenoids 28 and 30 can always be controlled in push-pull, so that only one of the pressure rollers 24 or 26 is in the pressure position.
  • the lifting magnet 28, 30 can bring the respective pressure roller 24, 26 into the pressing position, for example against the restoring force of a spring, or can move it back out of the pressing position.
  • the lifting magnet can also bring the pressure roller into the pressure position by means of two oppositely acting coils and move it back from the pressure position.
  • the solenoids 28 and 30 are controlled by an electronic random generator 32.
  • the second roller 18 is part of a stepped roller 34.
  • the stepped roller 34 consists of a plurality of rollers with different diameters, namely in addition to the roller 18, the rollers 36, 38, 40, 42 and 44.
  • the rollers 18 and 36, 38, 40, 42 and 44 coaxially and axially offset from each other and are driven together.
  • a thread runs past each of these rollers, which are pressed onto the roller 18 or 36, 38, 40, 42, or 44 by an associated pressure roller. For the sake of clarity, this is not shown in FIG. 1.
  • FIGS. 2 and 3 the delivery device is shown in a somewhat more constructive but still schematic representation. Corresponding parts are provided with the same reference numerals in FIGS. 2 and 3 as in FIG. 1.
  • FIG. 3 the rollers 18 and 36, 38, 40, 42 and 44 of the step roller 36 are shown in plan view. Threads 12, 46, 48, 50, 52 and 54 are guided by the thread guide 20 past the rollers 18, 36, 38, 40, 42 and 44, respectively. The threads 12, 46, 48, 50, 52 and 54 can be pressed against the associated roller 18, 36, 38, 40, 42 and 44 by pressure rollers 26, 56, 58, 60, 62 and 64. This is done by solenoids 30, 66, 68, 70, 72 and 74, respectively, in FIGS. 2 and 3 the control of the pressure roller 62 by the solenoid 72 is shown in detail.
  • the lifting magnet 72 contains a housing 76.
  • a magnet coil 78 is held in the housing 76.
  • the magnet coil acts on a magnet core 80 which executes a stroke when the magnet coil 78 is excited and is moved out of the magnet coil against the roller 42.
  • the pressure roller 62 is seated in a fork 82 directly on the magnetic core 80.
  • the pressure roller 62 is held by a roller holder 84 which is pivotably mounted in the housing 76.
  • the roller holder 84 absorbs the weight of the pressure roller 62 and the transverse forces acting on the pressure roller 62, so that the magnetic core 80 is relieved of it.
  • the lifting magnet 86 is constructed in a corresponding manner and actuates the associated pressure roller 88, by means of which the thread 52 can be pressed onto the first roller 16.
  • a wrap brake 90 for the thread 52 is provided between the feed roll 10 and the thread guide 14.
  • the lifting magnets 30 and 66, 68, 70 and 74 as well as the associated pressure rollers, which interact with the first roller 16, and the lifting magnets, by means of which these can be controlled, are designed.
  • Fig. 4 shows an example of a yarn provided with such effects.
  • the thread 52 is passed to an air nozzle or other effect device which is known per se and is therefore not shown in detail here.
  • a basic thread 54 is continuously supplied via the step roller 36 (roller 44) at the normal delivery speed of, for example, 200 m / min.
  • Each thread 52, 50, 48 46 and 12 is optionally available with a ratio of 1: 1.5; 1: 2.0; 1: 2.5; 1: 3.0 and 1: 3.5 increased delivery speed available when the relevant solenoids are energized.
  • the change between the solenoids and the duration and spacing of the excitations are controlled by the random generator 32.
  • the values for the duration of the excitation and the distances follow a random distribution, but are within predetermined or predeterminable lower and upper limits.
  • the construction and programming of a random generator which fulfills the functions specified above is familiar to the person skilled in the art and is therefore not described in detail here described.
  • step roller 34 The roles of the step roller 34 are interchangeable. It is therefore also possible to work with other combinations of roll diameters. For example, one thread can be delivered over the first roller 16 at a delivery speed of 200 m / min, while five further threads can be delivered by rolling the stepped roller, each with a ratio of 1: 1.5 or 1: 2.0 or 1: 2.5 etc. increased speed are available.

Abstract

Randomly arranged and/or designed effects are produced on a yarn. The threads are fed to an effect device (22) by a delivery device at a variable delivery speed. The delivery device contains a first and a second roller (16, 18) which rotate at different circumferential speeds. A thread can be pressed selectively by pressure rollers (24, 26) against one roller (16, 18) or the other. The pressure rollers (24, 26) are each directly actuable by means of a respective lifting magnet (28, 30). The lifting magnet (28, 30) can be controlled in the push-pull mode by an electronic random-value generator (32). The second roller (18) forms part of a stepped roller (36) with rollers of different diameter, each of which interacts with a thread and a separate pressure roller controlled by a lifting magnet. <IMAGE>

Description

Die Erfindung betrifft eine Vorrichtung zur Erzeugung zufällig angeordneter und/oder ausgebildeter Effekte an einem Garn, enthaltend

  • (a) eine Effektvorrichtung, durch welche wenigstens ein Faden hindurchgeführt ist, und
  • (b) eine Liefereinrichtung, durch welche ein Faden mit unterschiedlichen Geschwindigkeiten durch die Effektvorrichtung förderbar ist, mit
    • einer ersten Rolle, die mit einer ersten Geschwindigkeit umläuft,
    • einer zweiten Rolle, die mit einer von der ersten Rolle verschiedenen zweiten Geschwindigkeit umläuft, und
    • Andruckrollen, die elektromagnetisch gesteuert sind und durch welche der Faden wahlweise an die erste oder an die zweite Rolle andrückbar ist, und
  • (c) eine Steuervorrichtung, durch welche die Liefereinrichtung in einer unregelmäßigen Folge ansteuerbar ist,
The invention relates to a device for producing randomly arranged and / or formed effects on a yarn containing
  • (a) an effect device through which at least one thread is passed, and
  • (b) a delivery device, by means of which a thread can be conveyed through the effect device at different speeds
    • a first roll that rotates at a first speed
    • a second roller which rotates at a second speed different from the first roller, and
    • Pressure rollers which are controlled electromagnetically and by means of which the thread can be pressed against either the first or the second roller, and
  • (c) a control device by means of which the delivery device can be controlled in an irregular sequence,

Es geht dabei um folgendes: Es sollen Garne mit bestimmten Unregelmäßigkeiten, z.B. Noppen oder Knoten, erzeugt werden. Dadurch wird bei dem fertigen Gewebe oder Gewirke eine bestimmte, gewünschte optische Wirkung erzielt. Diese Unregelmäßigkeiten werden dadurch erzielt, daß ein Faden oder mehrere Fäden einer Effektvorrichtung, z.B. einer Lufttexturiervorrichtung, in zeitlicher Aufeinanderfolge mit verschiedenen Geschwindigkeiten zugeführt wird. Es ist dabei wesentlich, daß die damit erzielten Effekte in zufälliger Folge auftreten und keine Periodizität erhalten wird. In diesem Falle würden sich nämlich bei Verweben eines solchen Garnes unerwünschte Muster ("Bilderung") in dem Stoff ergeben.It is about the following: Yarns with certain irregularities, e.g. Pimples or knots. As a result, a certain desired optical effect is achieved in the finished woven or knitted fabric. These irregularities are achieved by one or more threads of an effect device, e.g. an air texturing device, is supplied in chronological succession at different speeds. It is essential that the effects achieved with this occur in a random sequence and that no periodicity is obtained. In this case, undesirable patterns ("formation") would result in the weaving of such a yarn.

Durch die US-PS 3 805 344 ist ist eine Texturiervorrichtung bekannt, bei welcher ein zu texturierender Faden von einer Vorratsrolle über eine Liefereinrichtung in einen Druckmittelstrahl einer Texturiervorrichtung gefördert wird. Der durch den Druckmittelstrahl geleitete Faden ist dann über eine Spanngabel geführt und wird von einer Aufnahmespule aufgewickelt.A texturing device is known from US Pat. No. 3,805,344, in which a thread to be textured is conveyed from a supply roll via a delivery device into a pressure medium jet of a texturing device. The thread guided by the pressure medium jet is then passed over a tension fork and is wound up by a take-up spool.

Die Liefereinrichtung enthält zwei Rollen, die mit unterschiedlichen Umfangsgeschwindigkeiten angetrieben werden, nämlich eine erste Rolle, die mit einer relativ langsamen Umfangsgeschwindigkeit umläuft, und eine zweite Rolle, deren Umfangsgeschwindigkeit wesentlich höher ist. Der Faden ist an den beiden Rollen vorbeigeführt. Durch Andruckrollen wird der Faden wahlweise entweder an die erste Rolle der Liefereinrichtung angedrückt oder an die zweite Rolle. Im ersteren Falle wird er der Texturiervorrichtung mit relativ geringer Geschwindigkeit zugeführt. Im letzteren Fall erfolgt die Zuführung des Fadens mit einer wesentlich erhöhten Geschwindigkeit. Um sicherzustellen, daß der Faden durch die betreffende Andruckrolle an die zweite Rolle nur angedrückt wird, wenn der Andruck an die erste Rolle vorher aufgehoben wurde, sitzen die beiden Andruckrollen zum Andrücken des Fadens an die erste und an die zweite Rolle auf einem schwenkbar gelagerten, zweiarmigen Hebel. Dieser Hebel ist durch eine Feder in einer Normalstellung gehalten, in welcher der Faden durch eine Andruckrolle an die erste Rolle der Liefereinrichtung angedrückt wird und die andere Andruckrolle abgehoben ist. Der Hebel wird durch einen Hubmagneten gegen die Wirkung der Feder in eine andere Stellung verschwenkt, in welcher die eine Andruckrolle von der ersten Rolle der Liefereinrichtung abgehoben ist und dafür die andere Andruckrolle den Faden an die zweite Rolle andrückt.The delivery device contains two rollers which are driven at different peripheral speeds, namely a first roller which rotates at a relatively slow peripheral speed and a second roller whose peripheral speed is significantly higher. The thread runs past the two rollers. The thread is either pressed onto the first one by pressure rollers Role of the delivery device pressed or to the second role. In the former case, it is fed to the texturing device at a relatively slow speed. In the latter case, the thread is fed at a significantly increased speed. In order to ensure that the thread is only pressed against the second roller by the pressure roller in question if the pressure on the first roller has been released beforehand, the two pressure rollers are seated on a pivotable bearing for pressing the thread onto the first and second rollers. two-armed lever. This lever is held in a normal position by a spring, in which the thread is pressed against the first roller of the delivery device by a pressure roller and the other pressure roller is lifted off. The lever is pivoted by a lifting magnet against the action of the spring into another position in which the one pressure roller is lifted from the first roller of the delivery device and the other pressure roller presses the thread onto the second roller.

Bei dieser bekannten Vorrichtung wird die gegenphasige Ansteuerung der Andruckrollen auf mechanischem Wege durch die Anordnung auf einem gemeinsamen Schwenkhebel erreicht.In this known device, the counter-phase control of the pressure rollers is achieved mechanically by the arrangement on a common pivot lever.

Es ist weiterhin bekannt, eine Rolle der Liefervorrichtung über Magnetkupplungen wahlweise mit einem langsamen und einem schnellen Antrieb zu kuppeln (Firmendruckschrift "Flammen- und Farb _ Effekteinrichtung Modell Fatex zur Luft _ Texturier _ Maschine Modell AT/AT-GD" der Eltex Textilveredelungs _ Maschinen GmbH, Reutlingen).It is also known to couple a roll of the delivery device via magnetic clutches optionally with a slow and a fast drive (company publication "Flame and color _ effect device model Fatex for air _ texturing _ machine model AT / AT-GD" of the Eltex textile finishing machines GmbH, Reutlingen).

Die Steuerung des Hubmagneten bzw. der Magnetkupplungen erfolgt bei den bekannten Vorrichtungen durch Steuergeräte, die mit Lochkarten arbeiten. Nach einem Durchlauf einer solchen Lochkarte (Rapport) wiederholt sich die zeitliche Aufeinanderfolge der Steuerbefehle. Das kann zu der eingangs geschilderten Musterbildung (Bilderung) im Gewebe führen. Es sind zwar Programmstörungen zur Vermeidung einer solchen Bilderung vorgesehen. Das führt jedoch nicht immer zum Erfolg, so daß Endprodukte zweiter Wahl entstehen.In the known devices, the lifting magnet or the magnetic couplings are controlled by control units which work with punch cards. After running through such a punch card (repeat), the repeats chronological order of the control commands. This can lead to the pattern formation (formation) in the tissue described at the beginning. Program errors are provided to avoid such formation. However, this does not always lead to success, so that end products of second choice are created.

Die Längen der erzeugten Effekte auf dem Garn sollen in einem bestimmten Bereich liegen und eine obere Grenze nicht überschreiten. Andererseits soll die Liefergeschwindigkeit möglichst hoch sein, um die Leistung der Maschine zu erhöhen. Bei den bekannten Vorrichtungen ergibt sich dabei eine Grenze infolge der Trägheit der bewegten Massen, z.B. des Schwenkhebels der oben erwähnten US-PS 3 805 344, oder Magnetkupplungen. Bei einer vorgegebenen maximalen Länge der erzeugten Effekte ist durch die Reaktionszeit der Umschaltung eine maximale Liefergeschwindigkeit vorgegeben.The lengths of the effects produced on the yarn should be in a certain range and should not exceed an upper limit. On the other hand, the delivery speed should be as high as possible in order to increase the performance of the machine. In the known devices there is a limit due to the inertia of the moving masses, e.g. the pivot lever of the aforementioned U.S. Patent 3,805,344, or magnetic couplings. With a predetermined maximum length of the effects generated, a maximum delivery speed is predetermined by the response time of the switchover.

Schließlich sind die bei den bekannten Vorrichtungen gegebenen Variationsmöglichkeiten sehr begrenzt.Finally, the possible variations in the known devices are very limited.

Der Erfindung liegt die Aufgabe zugrunde, bei einer Vorrichtung der eingangs genannten Art zur Erzeugung zufällig angeordneter Effekte an einem Garn durch Verkürzung der Reaktionszeit bei der Umschaltung der Geschwindigkeiten der Liefereinrichtung eine Erhöhung der Liefergeschwindigkeit bei vorgegebener Obergrenze der Länge der erzeugten Effekte zu ermöglichen.The invention has for its object to enable an increase in the delivery speed with a predetermined upper limit of the length of the generated effects in a device of the type mentioned for generating randomly arranged effects on a yarn by shortening the response time when switching the speeds of the delivery device.

Der Erfindung liegt weiter die Aufgabe zugrunde, bei einer Vorrichtung der eingangs genannten Art das Auftreten von Bilderungen zu vermeiden.The invention is further based on the object of preventing the occurrence of formations in a device of the type mentioned at the outset.

Eine weitere Aufgabe der Erfindung besteht darin, bei einer Vorrichtung der eingangs genannten Art die Anzahl der gegebenen Variationsmöglichkeiten zu vergrößern.Another object of the invention is to increase the number of possible variations in a device of the type mentioned in the introduction.

Erfindungsgemäß wird diese Aufgabe dadurch gelöst, daß

  • (d) die Andruckrollen zum Andrücken des Fadens an die erste Rolle und zum Andrücken des Fadens an die zweite Rolle von je einem gesonderten Hubmagneten bewegbar sind und
  • (e) die Hubmagneten von der Steuervorrichtung im Gegentakt ansteuerbar sind.
According to the invention, this object is achieved in that
  • (d) the pressure rollers for pressing the thread against the first roller and for pressing the thread against the second roller can each be moved by a separate lifting magnet and
  • (e) the solenoids can be controlled by the control device in push-pull.

Vorzugsweise ist die Steuervorrichtung ein elektronischer Zufallsgenerator.The control device is preferably an electronic random generator.

Eine Reduzierung der bewegten Massen läßt sich insbesondere dadurch erzielen, daß jede der Andruckrollen unmittelbar an dem Anker des betreffenden Hubmagneten gelagert ist.A reduction in the moving masses can be achieved in particular in that each of the pressure rollers is mounted directly on the armature of the lifting magnet in question.

Eine Vergrößerung der Variationsmöglichkeiten läßt sich dadurch erreichen, daß

  • (a) die zweite Rolle Teil einer Stufenrolle ist, die aus einer Mehrzahl von Rollen mit unterschiedlichem Durchmesser gebildet ist,
  • (b) mehrere Fäden über je eine Rolle der Stufenrolle geführt sind und
  • (c) jeder Rolle der Stufenrolle eine durch einen gesonderten Hubmagneten in Andrückstellung bewegbare Andruckrolle zugeordnet ist.
An increase in the possible variations can be achieved in that
  • (a) the second roller is part of a step roller, which is formed from a plurality of rollers with different diameters,
  • (b) several threads are passed over one roll of the step roll and
  • (c) each roller of the stepped roller is assigned a pressure roller which can be moved in the pressing position by a separate lifting magnet.

Der Zufallsgenerator kann dann so programmiert sein, daß er innerhalb vorgegebener Grenzen folgende Funktionen nach zufälligen Verteilungen steuert:

  • (a) die Wahl der Andruckrolle, die an die zugehörige Rolle der Stufenrolle angedrückt wird unter gleichzeitigem Abheben der Andruckrolle, durch welche der betreffende Faden an die erste Rolle andrückbar ist,
  • (b) der Zeitabstand zwischen dem Andrücken der verschiedenen Andruckrollen an die zugehörige Rolle der Stufenrolle und
  • (c) die Zeitdauer des Andrückens der verschiedenen Andruckrollen an die zugehörige Rolle der Stufenrolle.
The random generator can then be programmed so that it controls the following functions according to random distributions within predetermined limits:
  • (a) the choice of the pressure roller which is pressed onto the associated roller of the stepped roller while at the same time lifting off the pressure roller, by means of which the thread in question can be pressed against the first roller,
  • (b) the time interval between the pressing of the various pressure rollers against the associated roller of the step roller and
  • (c) the length of time the various pressure rollers are pressed against the associated roller of the step roller.

Es hat sich gezeigt, daß durch die erfindungsgemäße Ansteuerung der Andruckrollen durch einzelne Hubmagnete die zu bewegenden trägen Massen wesentlich vermindert werden können. Da nur geringe Trägheitskräfte zu überwinden sind, können auch kleinere Hubmagnete verwendet werden, die wiederum schneller ansprechen. Die Reaktionszeit der Liefereinrichtung auf einen Befehl zur Umschaltung der Liefergeschwindigkeit kann daher gegenüber dem Stand der Technik erheblich reduziert werden. Damit sind höhere Liefergeschwindigkeiten möglich und damit wiederum eine höhere Leistung der Maschine. Die Synchronisation des Anlegens und Abhebens der beiden Andruckrollen an den zugehörigen Rollen der Liefervorrichtung erfolgt nicht mechanisch mittels eines schwenkbaren, doppelarmigen Hebels wie bei der US-PS 3 805 344 sondern elektrisch durch geeignete Ansteuerschaltungen für die zugehörigen Hubmagnete, die praktisch trägheitslos arbeiten. Es hat sich gezeigt, daß auf diese Weise eine einwandfreie Umschaltung möglich ist.It has been shown that the inertial masses to be moved can be significantly reduced by the inventive actuation of the pressure rollers by means of individual lifting magnets. Since only low inertia forces have to be overcome, smaller solenoids can be used, which in turn respond faster. The response time of the delivery device to a command to switch the delivery speed can therefore be considerably reduced compared to the prior art. This enables higher delivery speeds and, in turn, higher machine performance. The synchronization of the application and lifting of the two pressure rollers on the associated rollers of the delivery device does not take place mechanically by means of a pivotable, double-armed lever as in US Pat. No. 3,805,344, but electrically through suitable control circuits for the associated solenoids, which work practically inertia. It has been shown that a flawless switchover is possible in this way.

Der elektronische Zufallsgenerator gestattet die Darstellung eines praktisch unendlichen Rapports. Es erfolgen daher keine periodischen Wiederholungen eines Musters der Effekte auf dem Garn, so daß auch keine Bilderung auftritt.The electronic random generator allows the display of a practically infinite repeat. There is therefore no periodic repetition of a pattern of the effects on the yarn, so that no formation occurs.

Durch die Verwendung der Stufenrolle werden zusätzliche Variable geschaffen, wodurch die Anzahl der zur Verfügung stehenden Variationsmöglichkeiten gegenüber dem Stand der Technik erheblich vergrößert wird.The use of the step roller creates additional variables, which considerably increases the number of possible variations compared to the prior art.

Ein Ausführungsbeispiel der Erfindung ist nachstehend unter Bezugnahme auf die zugehörigen Zeichnungen näher erläutert:

  • Fig. 1 ist eine schematische Darstellung einer Vorrichtung zur Erzeugung zufällig angeordneter und/oder ausgebildeter Effekte an einem Garn.
  • Fig. 2 ist eine Draufsicht einer Liefereinrichtung bei einer Vorrichtung nach Fig. 1.
  • Fig. 3 ist eine Seitenansicht der Liefereinrichtung.
  • Fig. 4 ist ein Beispiel eines mit einer Vorrichtung der vorliegenden Art erhaltenen Effektgarnes.
An embodiment of the invention is explained in more detail below with reference to the accompanying drawings:
  • 1 is a schematic illustration of a device for producing randomly arranged and / or formed effects on a yarn.
  • FIG. 2 is a top view of a delivery device in a device according to FIG. 1.
  • Figure 3 is a side view of the delivery device.
  • Fig. 4 is an example of a fancy yarn obtained with a device of the present type.

In Fig. 1 ist mit 10 eine Vorlagespule für einen zu verarbeitenden Faden 12 bezeichnet. Der Faden 12 ist durch einen Fadenführer 14 hindurch an einer ersten Rolle (Lieferrolle) 16 und einer zweiten Rolle (Effektrolle) 18 vorbeigeführt. Der Faden 12 läuft dann durch einen weiteren, oberen Fadenführer 20 zu einer Effektvorrichtung 22. Die erste Rolle 16 ist mit einer relativ niedrigen Umfangsgeschwindigkeit angetrieben. Die zweite Rolle 18 besitzt eine wesentlich höhere Umfangsgeschwindigkeit.In Fig. 1, 10 denotes a supply spool for a thread 12 to be processed. The thread 12 is guided through a thread guide 14 past a first roll (delivery roll) 16 and a second roll (effect roll) 18. The thread 12 then runs through a further, upper thread guide 20 to an effect device 22. The first roller 16 is driven at a relatively low peripheral speed. The second roller 18 has a much higher peripheral speed.

Durch eine erste Andruckrolle 24 kann der Faden 12 gegen die erste Rolle 16 angedrückt werden. Die erste Rolle 16 ist mit einer Gummioberfläche versehen, so daß der Faden 12 in diesem Falle mit der Umfangsgeschwindigkeit der ersten Rolle 16 geliefert wird. Durch eine zweite Andruckrolle 26 kann der Faden 12 an die zweite Rolle 18 angedrückt werden, so daß er mit der höheren Umfangsgeschwindigkeit der zweiten Rolle 18 geliefert wird. Die erste Andruckrolle 24 ist durch einen Hubmagneten 28 in die in Fig.1 gezeigte Andruckstellung bewegbar. Die zweite Andruckrolle 26 ist durch einen Hubmagneten 30 in eine Andruckstellung bewegbar, in welcher sie den Faden 12 an die zweite Rolle 18 andrückt. Die beiden Hubmagneten 28 und 30 sind stets im Gegentakt ansteuerbar, so daß immer jeweils nur eine der Andruckrollen 24 oder 26 in Andruckstellung ist. Dabei kann der Hubmagnet 28,30 die jeweils zugehörige Andruckrolle 24, 26 zum Beispiel gegen die Rückstellkraft einer Feder in die Andrückstellung einbringen oder aus der Andrückstellung zurückfahren. Für hohe Taktgeschwindigkeiten kann der Hubmagnet die Andruckrolle auch durch zwei gegensinnig wirkende Spulen in die Andrüstellung einbringen und aus der Andrückstellung zurückfahren.The thread 12 can be pressed against the first roller 16 by a first pressure roller 24. The first roller 16 is provided with a rubber surface, so that the thread 12 is delivered in this case at the peripheral speed of the first roller 16. The thread 12 can be pressed against the second roller 18 by a second pressure roller 26, so that it is delivered at the higher peripheral speed of the second roller 18. The first pressure roller 24 can be moved into the pressure position shown in FIG. 1 by a lifting magnet 28. The second pressure roller 26 can be moved by a lifting magnet 30 into a pressure position in which it presses the thread 12 onto the second roller 18. The two solenoids 28 and 30 can always be controlled in push-pull, so that only one of the pressure rollers 24 or 26 is in the pressure position. The lifting magnet 28, 30 can bring the respective pressure roller 24, 26 into the pressing position, for example against the restoring force of a spring, or can move it back out of the pressing position. For high cycle speeds, the lifting magnet can also bring the pressure roller into the pressure position by means of two oppositely acting coils and move it back from the pressure position.

Die Hubmagnete 28 und 30 sind von einem elektronischen Zufallsgenerator 32 gesteuert.The solenoids 28 and 30 are controlled by an electronic random generator 32.

Bei der dargestellten bevorzugten Ausführungsform ist die zweite Rolle 18 Teil einer Stufenrolle 34. Die Stufenrolle 34 besteht aus einer Mehrzahl von Rollen mit unterschiedlichen Durchmessern, nämlich außer der Rolle 18 den Rollen 36, 38, 40, 42 und 44. In noch zu beschreibender Weise sind die Rollen 18 und 36, 38, 40, 42 und 44 gleichachsig und axial gegeneinander versetzt angeordnet und werden gemeinsam angetrieben. An jeder dieser Rollen läuft ein Faden vorbei, der durch eine zugehörige Andruckrolle an die Rolle 18 bzw. 36, 38, 40, 42, oder 44 angedrückt werden. Das ist in Fig.1 der Deutlichkeit halber nicht dargestellt.In the preferred embodiment shown, the second roller 18 is part of a stepped roller 34. The stepped roller 34 consists of a plurality of rollers with different diameters, namely in addition to the roller 18, the rollers 36, 38, 40, 42 and 44. In a manner to be described are the rollers 18 and 36, 38, 40, 42 and 44 coaxially and axially offset from each other and are driven together. A thread runs past each of these rollers, which are pressed onto the roller 18 or 36, 38, 40, 42, or 44 by an associated pressure roller. For the sake of clarity, this is not shown in FIG. 1.

Der Zufallsgenerator 32 ist so ausgebildet und programmiert, daß er innerhalb vorgegebener Grenzen folgende Funktionen nach zufälligen Verteilungen steuert:

  • (a) die Wahl der Andruckrolle 26, 56, 58, 60, 62 oder 64, die an die zugehörige Rolle 18 oder 36, 38, 40, 42 oder 44 angedrückt wird, wobei gleichzeitig jeweils die zugehörige, Andruckrolle 24, durch welche der betreffende Faden 12, 46, 48, 50, 52 ode 54 an die erste Rolle 16 andrückbar ist, von der ersten Rolle 16 abgehoben wird,
  • (b) der Zeitabstand zwischen dem Andrücken der verschiedenen Andruckrollen 26, 56, 58, 60, 62 oder 64 an die zugehörige Rolle 18 bzw. 36, 38, 40, 42 bzw. 44 der Stufenrolle 34 und
  • (c) die Zeitdauer des Andrückens der verschiedenen Andruckrollen 26, 56, 58, 60, 62 oder 64 an die zugehörige Rolle 18 bzw. 36, 38, 40, 42 bzw. 44 der Stufenrolle 34.
The random generator 32 is designed and programmed in such a way that it controls the following functions according to random distributions within predetermined limits:
  • (a) the choice of the pressure roller 26, 56, 58, 60, 62 or 64, which is pressed onto the associated roller 18 or 36, 38, 40, 42 or 44, at the same time the associated pressure roller 24, through which the relevant thread 12, 46, 48, 50, 52 or 54 can be pressed against the first roll 16, is lifted off the first roll 16,
  • (b) the time interval between the pressing of the various pressure rollers 26, 56, 58, 60, 62 or 64 onto the associated roller 18 or 36, 38, 40, 42 or 44 of the stepped roller 34 and
  • (c) the length of time that the various pressure rollers 26, 56, 58, 60, 62 or 64 are pressed onto the associated roller 18, 36, 38, 40, 42 or 44 of the stepped roller 34.

In Fig. 2 und 3 ist die Liefereinrichtung in etwas konstruktiverer aber immer noch schematischer Darstellung gezeigt. Entsprechende Teile sind in Fig. 2 und 3 mit den gleichen Bezugszeichen versehen wie in Fig. 1.2 and 3, the delivery device is shown in a somewhat more constructive but still schematic representation. Corresponding parts are provided with the same reference numerals in FIGS. 2 and 3 as in FIG. 1.

In Fig. 3 sind in Draufsicht die Rollen 18 und 36, 38, 40, 42 und 44 der Stufenrolle 36 dargestellt. Fäden 12, 46, 48, 50, 52 und 54 sind durch den Fadenführer 20 an den Rollen 18, 36, 38, 40, 42 bzw. 44 vorbeigeführt. Die Fäden 12, 46, 48, 50, 52 und 54 sind durch Andruckrollen 26, 56, 58, 60, 62 bzw. 64 an die zugehörige Rolle 18, 36, 38, 40, 42 bzw. 44 andrückbar. Dies geschieht durch Hubmagneten 30, 66, 68, 70, 72 bzw. 74, wobei in Fig. 2 und 3 die Steuerung der Andruckrolle 62 durch den Hubmagneten 72 im einzelnen dargestellt ist.In Fig. 3, the rollers 18 and 36, 38, 40, 42 and 44 of the step roller 36 are shown in plan view. Threads 12, 46, 48, 50, 52 and 54 are guided by the thread guide 20 past the rollers 18, 36, 38, 40, 42 and 44, respectively. The threads 12, 46, 48, 50, 52 and 54 can be pressed against the associated roller 18, 36, 38, 40, 42 and 44 by pressure rollers 26, 56, 58, 60, 62 and 64. This is done by solenoids 30, 66, 68, 70, 72 and 74, respectively, in FIGS. 2 and 3 the control of the pressure roller 62 by the solenoid 72 is shown in detail.

Der Hubmagnet 72 enthält ein Gehäuse 76. In dem Gehäuse 76 ist eine Magnetspule 78 gehaltert. Die Magnetspule wirkt auf einen Magnetkern 80, der bei Erregung der Magnetspule 78 einen Hub ausführt und aus der Magnetspule heraus gegen die Rolle 42 bewegt wird. Die Andruckrolle 62 sitzt in einer Gabel 82 unmittelbar an dem Magnetkern 80. Außerdem ist die Andruckrolle 62 von einem Rollenhalter 84 gehalten, der in dem Gehäuse 76 schwenkbar gelagert ist. Der Rollenhalter 84 nimmt das Gewicht der Andruckrolle 62 und die auf die Andruckrolle 62 wirkenden Querkräfte auf, so daß der Magnetkern 80 davon entlastet ist.The lifting magnet 72 contains a housing 76. A magnet coil 78 is held in the housing 76. The magnet coil acts on a magnet core 80 which executes a stroke when the magnet coil 78 is excited and is moved out of the magnet coil against the roller 42. The pressure roller 62 is seated in a fork 82 directly on the magnetic core 80. In addition, the pressure roller 62 is held by a roller holder 84 which is pivotably mounted in the housing 76. The roller holder 84 absorbs the weight of the pressure roller 62 and the transverse forces acting on the pressure roller 62, so that the magnetic core 80 is relieved of it.

In entsprechender Weise ist der Hubmagnet 86 aufgebaut, der die zugehörige Andruckrolle 88 betätigt, mittels welcher der Faden 52 an die erste Rolle 16 andrückbar ist.The lifting magnet 86 is constructed in a corresponding manner and actuates the associated pressure roller 88, by means of which the thread 52 can be pressed onto the first roller 16.

Zwischen der Vorlagerolle 10 und dem Fadenführer 14 ist eine Umschlingungsbremse 90 für den Faden 52 vorgesehen.A wrap brake 90 for the thread 52 is provided between the feed roll 10 and the thread guide 14.

In entsprechender Weise sind auch die Hubmagnete 30 und 66, 68, 70 und 74 sowie die zugeordneten, mit der ersten Rolle 16 zusammenwirkenden Andruckrollen und die Hubmagnete, durch welche diese steuerbar sind, ausgebildet.In a corresponding manner, the lifting magnets 30 and 66, 68, 70 and 74 as well as the associated pressure rollers, which interact with the first roller 16, and the lifting magnets, by means of which these can be controlled, are designed.

Mit der beschriebenen Anordnung können sechs verschiedene, ggf. auch verschiedenfarbige Fäden von Vorlagespulen 10,.. abgezogen und entweder mit gleicher Geschwindigkeit durch die erste Rolle 16 der Effekteinrichtung 22 zugeführt werden oder, je nachdem welche der Rollen 26, 56, 58, 60, 62 oder 64 den Faden an die zugehörige Rolle 18, 36, 38, 40, 42 bzw. 44 andrückt, mit unterschiedlichen Geschwindigkeiten. Jede der Rollen 18, 36, 38, 40, 42 und 44 erteilt dem zugehörigen Faden eine andere Liefergeschwindigkeit. Dementsprechend werden durch die Effekteinrichtung 22 unterschiedliche Effekte an dem gebildeten Garn hervorgerufen.With the arrangement described, six different, possibly also differently colored, threads can be drawn off from supply spools 10,... And fed either at the same speed through the first roller 16 to the effects device 22 or, depending on which of the rollers 26, 56, 58, 60, 62 or 64 presses the thread onto the associated reel 18, 36, 38, 40, 42 or 44, at different speeds. Each of the rollers 18, 36, 38, 40, 42 and 44 gives the associated thread a different delivery speed. Accordingly, the effects device 22 causes different effects on the yarn formed.

Fig. 4 zeigt ein Beispiel eines mit solchen Effekten versehenen Garnes.Fig. 4 shows an example of a yarn provided with such effects.

Am oberen Ende von Fig. 2 wird der Faden 52 zu einer Luftdüse oder einer sonstigen Effekteinrichtung geleitet, die an sich bekannt und daher hier nicht im einzelnen dargestellt ist.At the upper end of FIG. 2, the thread 52 is passed to an air nozzle or other effect device which is known per se and is therefore not shown in detail here.

Bei einer bevorzugten Ausführung hat die erste Rolle 16, die Lieferrole, einen Durchmesser von 130 mm. Das ergibt einen Umfang von U = 408,2 mm. Zur Erzielung einer Liefergeschwindigkeit von 200 m/min ist damit eine Drehzahl von 470 Umdrehungen pro Minute erforderlich.In a preferred embodiment, the first roller 16, the delivery roller, has a diameter of 130 mm. This results in a circumference of U = 408.2 mm. In order to achieve a delivery speed of 200 m / min, a speed of 470 revolutions per minute is required.

Für die Rollen der Stufenrolle 34 ergibt sich bei der bevorzugten Ausführung folgendes:The following results for the rollers of the step roller 34 in the preferred embodiment:

Die Stufenrolle 34 wird mit einer Drehzahl von 1400 Umdrehungen pro Minute angetrieben. Bei einer Liefergeschwindigkeit von 200 m/min ergäbe dies einen Rollendurchmesser von D = 45,5 mm für die kleinste Rolle 44. Für eine "Überlieferung", also eine gegenüber der von der Rolle 16 bewirkten "normalen" Liefergeschwindigkeit erhöhte Liefergeschwindigkeit, ergeben sich dann folgende Rollendurchmesser:

Figure imgb0001
The step roller 34 is driven at a speed of 1400 revolutions per minute. At a delivery speed of 200 m / min, this would result in a roll diameter of D = 45.5 mm for the smallest roll 44. For a "delivery", that is to say an increased delivery speed compared to the "normal" delivery speed caused by the roll 16, this then results following roll diameters:
Figure imgb0001

Es kann dann beispielsweise ein Garn wie folgt mit Effekten versehen werden:A yarn can then be provided with effects as follows:

Ein Grundfaden 54 wird über die Stufenrolle 36 (Rolle 44) ständig mit der normalen Liefergeschwindigkeit von beispielsweise 200 m/min geliefert. Je ein Faden 52, 50, 48 46 und 12 ist wahlweise mit einer im Verhältnis 1: 1,5; 1: 2,0; 1: 2,5; 1: 3,0 und 1: 3,5 vergrößerten Liefergeschwindigkeit lieferbar, wenn die betreffenden Hubmagnete erregt sind. Der Wechsel zwischen den Hubmagneten sowie die Dauer und die Abstände der Erregungen sind durch den Zufallsgenerator 32 gesteuert. Die Werte für die Dauer der Erregung und die Abstände folgen einer zufälligen Verteilung, liegen aber innerhalb vorgegebener oder vorgebbarer unterer und oberer Grenzen.Der Aufbau und die Programmierung eines Zufallsgenerators, welcher die oben angegebenen Funktionen erfüllt ist dem Fachmann geläufig und daher hier nicht im einzelnen beschrieben.A basic thread 54 is continuously supplied via the step roller 36 (roller 44) at the normal delivery speed of, for example, 200 m / min. Each thread 52, 50, 48 46 and 12 is optionally available with a ratio of 1: 1.5; 1: 2.0; 1: 2.5; 1: 3.0 and 1: 3.5 increased delivery speed available when the relevant solenoids are energized. The change between the solenoids and the duration and spacing of the excitations are controlled by the random generator 32. The values for the duration of the excitation and the distances follow a random distribution, but are within predetermined or predeterminable lower and upper limits. The construction and programming of a random generator which fulfills the functions specified above is familiar to the person skilled in the art and is therefore not described in detail here described.

Die Rollen der Stufenrolle 34 sind austauschbar. Es kann daher auch mit anderen Kombinationen von Rollendurchmessern gearbeitet werden. Beispielsweise kann ein Faden über die erste Rolle 16 mit einer Liefergeschwindigkeit von 200 m/min geliefert werden, während fünf weitere Fäden durch Rollen der Stufenrolle mit einer jeweils im Verhältnis 1: 1,5 oder 1: 2,0 oder 1: 2,5 usw. erhöhten Geschwindigkeit lieferbar sind.The roles of the step roller 34 are interchangeable. It is therefore also possible to work with other combinations of roll diameters. For example, one thread can be delivered over the first roller 16 at a delivery speed of 200 m / min, while five further threads can be delivered by rolling the stepped roller, each with a ratio of 1: 1.5 or 1: 2.0 or 1: 2.5 etc. increased speed are available.

Die beschriebene Anordnung gestattet daher eine Vielzahl von Variationsmöglichkeiten.The arrangement described therefore allows a variety of possible variations.

Claims (5)

1. Device for generating randomly arranged and/or formed designs at a yarn, containing
(a) a design device (22) through which at least one thread (12) is guided,
(b) a supply device arranged to convey a thread (12) at different speeds through the design device (22), having
- a first pulley (16) rotating at a first speed,
- a second pulley (18) rotating at a second speed different from the first pulley (16), and
- contact pressure pulleys (24, 26) controlled electromagnetically and arranged to press the thread (12) selectively against the first or the second pulley (16 and 18, respectively), and
(c) a control device (32) arranged to control the supply device in irregular sequence,
characterized in that
(d) the contact pressure pulleys (24, 26) are displacable by one separated solenoid each (28, 30) for pressing the thread (12) against the first pulley (16) and for pressing the thread (12) against the second pulley (18), and
(e) the solenoids (28, 30) are adapted to be controlled by the control device (32) in push-pull mode.
2. Device according to claim 1, characterized in that the control device is an electronic random generator (32).
3. Device according to claim 1, characterized in that each contact pressure pulley (24, 26) is directly mounted on the armature of the respective solenoid (28, 30).
4. Device according to claim 3, characterized in that
(a) the second pulley (18) is a component of a step pulley (34) formed by a plurality of pulleys (18, 36, 38, 40, 42, 44) having different diameters,
(b) several threads (12, 46, 48, 50, 52, 54) are guided through one pulley of the step pulley (34) each, and
(c) each pulley (18, 36, 38, 40, 42, 44) of the step pulley (34) is associated to a contact pressure pulley (26, 56, 58, 60, 62, 64) displaceable by a separated solenoid into contact pressure position.
5. Device according to claim 2 or 4, characterized in that the random generator (32) is programmed such that within predetermined limits, it controls the following functions according to random distributions:
(a) the selection of the contact pressure pulley (26, 56, 60, 62, 64) which is pressed against the associated pulley (18, 36, 38, 40, 42, 44) of the step pulley (34) while simultaneously lifting of the contact pressure pulley (24) arranged to press the respective thread (12, 46, 48, 50, 52, 54) against the first pulley (16),
(b) time interval between pressing of the different contact pressing pulleys against the associated pulley of the step pulley (34),
(c) the time of pressing the different contact pressing pulleys against the associated pulley of the step pulley (34).
EP88109583A 1987-06-16 1988-06-16 Device for producing randomly arranged and/or designed effects on a yarn Expired - Lifetime EP0295668B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88109583T ATE64418T1 (en) 1987-06-16 1988-06-16 DEVICE FOR PRODUCING RANDOMLY ARRANGED AND/OR DEVELOPED EFFECTS ON A YARN.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873720106 DE3720106A1 (en) 1987-06-16 1987-06-16 DEVICE FOR PRODUCING RANDOM AND / OR TRAINED EFFECTS ON A YARN
DE3720106 1987-06-16

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EP0295668A1 EP0295668A1 (en) 1988-12-21
EP0295668B1 true EP0295668B1 (en) 1991-06-12

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EP88109583A Expired - Lifetime EP0295668B1 (en) 1987-06-16 1988-06-16 Device for producing randomly arranged and/or designed effects on a yarn

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EP (1) EP0295668B1 (en)
AT (1) ATE64418T1 (en)
DE (2) DE3720106A1 (en)
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GR (1) GR3002277T3 (en)

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US20110191129A1 (en) * 2010-02-04 2011-08-04 Netzer Moriya Random Number Generator Generating Random Numbers According to an Arbitrary Probability Density Function

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Publication number Priority date Publication date Assignee Title
GB1042582A (en) * 1961-08-26 1966-09-14 Linen Ind Res Ass Continuous filament bulked yarns
US3325071A (en) * 1964-10-12 1967-06-13 Franz Thegarten Automatic wrapping machine
US3387758A (en) * 1965-11-12 1968-06-11 Rca Corp Low jitter web and tape drive
US3805344A (en) 1972-09-14 1974-04-23 Enterprise Machine & Dev Variable feed means for jet texturing apparatus
US3835511A (en) * 1973-04-09 1974-09-17 Enterprise Machine & Dev Programmer for air jet texturing apparatus
US4014489A (en) * 1975-12-01 1977-03-29 Providence Pile Fabric Corporation Variable yarn feed device
US4170865A (en) * 1978-03-10 1979-10-16 J. P. Stevens & Co., Inc. Yarn slubbing device
US4368612A (en) * 1979-11-13 1983-01-18 Milliken Research Corporation Apparatus for forming false twisted slubyarn
US4567720A (en) * 1983-03-02 1986-02-04 Enterprise Machine & Development, Inc. Air jet texturing system
US4663927A (en) * 1984-10-01 1987-05-12 Mitsubishi Rayon Company, Ltd. Method and apparatus for producing slub yarn

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ATE64418T1 (en) 1991-06-15
ES2023687B3 (en) 1992-02-01
US5148663A (en) 1992-09-22
DE3863236D1 (en) 1991-07-18
GR3002277T3 (en) 1992-12-30
EP0295668A1 (en) 1988-12-21
DE3720106A1 (en) 1988-12-29

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