EP1028181B1 - Pot spinning machine and method for centrifugal spinning - Google Patents

Pot spinning machine and method for centrifugal spinning Download PDF

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Publication number
EP1028181B1
EP1028181B1 EP00100169A EP00100169A EP1028181B1 EP 1028181 B1 EP1028181 B1 EP 1028181B1 EP 00100169 A EP00100169 A EP 00100169A EP 00100169 A EP00100169 A EP 00100169A EP 1028181 B1 EP1028181 B1 EP 1028181B1
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EP
European Patent Office
Prior art keywords
spinning
guide
yarn guide
yarn
rotor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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EP00100169A
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German (de)
French (fr)
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EP1028181A1 (en
Inventor
Karl-Heinz Bruss
Karl Koltze
Michael Sopala
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Oerlikon Textile GmbH and Co KG
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W Schlafhorst AG and Co
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Publication of EP1028181A1 publication Critical patent/EP1028181A1/en
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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H1/00—Spinning or twisting machines in which the product is wound-up continuously
    • D01H1/08—Spinning or twisting machines in which the product is wound-up continuously cup, pot or disc type, in which annular masses of yarn are formed by centrifugal action

Definitions

  • the invention relates to a centrifuge spinning machine for Manufacture of yarn with the in the preamble of claim 1 mentioned features and a method for Centrifugal spinning of yarn with the in the preamble of Claim 9 mentioned features.
  • centrifuge or pot spinning machine and a method of the generic type are known, for example, from DE 42 08 039 A1 and DE 43 24 039 A1 or US Pat. No. 3,314,223 A.
  • Centrifugal spinning machines of this type generally comprise a large number of spinning positions, each of which has a spin pot (centrifuge) which can be set in rotation.
  • Such spinning stations are fed via a sliver drafting device, preferably a drafting device, sliver which is spun into a thread under the action of the spinning pot rotating about its central axis.
  • the thread passes through a tubular thread guide and exits at its mouth, forming a thread leg.
  • the thread is deposited in layers on the inner wall of the spinning pot as a so-called spinning cake. This placing of the spinning cake takes place by generating a relative movement between the thread guide and the spinning pot in the axial direction.
  • This relative movement also referred to as a traversing movement, is generated by a drive device for the thread guide and
  • a ring spinning device is known from DE 41 02 549 A1, with a drive device for generating an axial relative movement between a rotor rotating on a spinning ring and a yarn carrier arranged on a spindle bench.
  • the drive device comprises, for example, a lifting carriage which can be displaced by a spindle arrangement.
  • the spindle is preferably driven by an electric motor.
  • it is disadvantageous that a relatively complicated arrangement has to be provided which requires a relatively large installation space.
  • the exposed drive spindle requires a relatively high level of maintenance, since, particularly in the fiber flight environment of a spinning mill, it has a strong tendency to flow.
  • the invention has for its object a device and to create a process with which in a simple manner a relative movement between a thread guide and a Spinning pot is achievable.
  • the drive device is an electric motor
  • the Rotor is directly operatively connected to the thread guide
  • the rotor is a cylinder that the Thread guide takes form-fitting.
  • This will in a particularly simple way of transferring the Driving energy of the electric motor on the thread guide possible because the rotor of the electric motor directly on the Thread guide works.
  • it becomes a very accurate one Positioning of the thread guide possible because of the absence tolerance errors of intermediate transmission elements, Slip errors or the like can be avoided.
  • the electric motor is a stepper motor (Claim 5).
  • This can be defined by appropriate Control of the stepper motor an exact positioning or exact axial displacement of the thread guide can be realized relative to the spinning pot.
  • the stepper motor is controlled proportionally Shifting the thread guide so that the on the inner circumference of the Spinnkuchen deposited spinning pot through a uniform thread position.
  • the object is further achieved by a method solved with the features mentioned in claim 9.
  • a spinning station 10 of a centrifuge or pot spinning machine is shown. Centrifugal spinning machines generally have a large number of such spinning stations 10, which are arranged either in rows or in rings next to one another. Each spinning station 10 has a centrifuge spinning device 12, which is shown in FIG. 1 in a schematic longitudinal section.
  • the centrifuge spinning device 12 comprises a rotatably mounted, drivable spin pot (centrifuge) 14, in the interior 16 of which a thread guide 18 engages.
  • the longitudinal axis 22 of the thread guide 18 coincides with the axis of rotation 24 of the spinning pot 14.
  • a roving 26 'stretched in a drafting device 32 can be introduced into the spinning centrifuge 14 by the thread guide 18 and is subsequently spun into a thread 26 under the action of the rotating spinning centrifuge 14.
  • the thread 26 emerging from the thread guide opening 36 while forming a thread leg 28 is deposited as a so-called spin cake 20 on the inner wall 30 of the spinning centrifuge 14.
  • a drive device 38 is assigned to the thread guide 18, by means of which an axial relative movement of the thread guide 18 and thus its mouth 36 to the spinning centrifuge 14 can be predetermined.
  • the relative movement of the thread guide 18 takes place on the one hand in an oscillating manner, on the other hand the thread guide 18 is constantly shifted somewhat downwards, so that the spinning cake 20 is given a so-called cop winding.
  • the drive device 38 is preferably designed as a stepper motor 40 which can be controlled via a control device 42.
  • the stepper motor 40 comprises a stationary stator 44 and a rotor 46 arranged inside the stator.
  • the structure and mode of operation of stepper motors 40 are generally known, so that this description is not intended to be discussed in greater detail here.
  • the rotor 46 is designed as a cylinder 48 which has an internal thread 50.
  • the internal thread 50 meshes with an external thread 52 of the thread guide 18.
  • the meshing threads 50 and 52 lead to an interlocking operative connection between the drive device 38 and the thread guide 18.
  • the thread guide 18 itself is in this case by an anti-rotation device 58, which is shown in more detail in FIG. 2 is fixed against rotation.
  • the spinning centrifuge 14 is rotated about the axis of rotation 24 at high speed by an electromotive drive device 64.
  • roving 26 ' which was previously drawn, for example, in a drafting device 32, is fed into the spinning centrifuge 14 via a thread guide 18.
  • the roving emerging from the thread guide orifice 36 rests against the inner wall 30 of the spinning centrifuge 14 under the effect of the rotating flow circulating in the spinning centrifuge 14 and is thereby spun into a thread 26.
  • the thread 26 forming a circumferential thread leg 28 between the thread guide mouth 36 and the inner wall 30 of the spinning centrifuge 14 is attached to the inner wall 30 of the spinning pot 14 and forms a so-called spinning cake 20 there.
  • the thread 26 is placed on the inner wall 30 of the spin pot 14 in the manner of a cop winding. That is, as is known per se, the thread guide 18 is always shifted back and forth by a certain, constant stroke and at the same time is continuously shifted slightly downward with respect to the rotating spinning pot 14. As a result, the mouth 36 of the thread guide 18 is also displaced relative to the inner wall 30 of the spin pot 14, so that the contact area of the thread leg 28 varies accordingly.
  • the thread depositing technique described above which leads to the formation of a spool cake 20 that can be easily rewound, is specified via the control device 42, which takes over a correspondingly manually specifiable or programmable control of the drive device 38 via a computing unit.
  • the stepping motor 40 Corresponding to the actuation of the drive device 38, here the stepping motor 40, its rotor 46, that is to say the cylinder 48, rotates so that it is due to the positive connection between the internal thread 50 of the rotor 46 and the external thread 52 against rotation by means of an anti-rotation device 58 fixed thread guide 18 comes to an axial displacement of the thread guide 18.
  • the anti-rotation device 58 can, as indicated in FIG. 2, consist of a longitudinal groove 60 in the area of the external thread 52 of the thread guide 18 and securing element 62.
  • the securing element 62 which is fixed, for example, in a rotationally fixed manner on the stator 44 of the stepping motor 40, thereby fits into the longitudinal groove 60.
  • the drive device 38 the thread guide 18th almost encompasses, there is only an extremely small amount of space available Arrangement of the drive device 38 necessary. Furthermore, hereby achieved that the actuator, here the rotor 46, directly is operatively connected to the thread guide 18. hereby the arrangement of intermediate transmission members is not necessary. The driving force can thus be immediate and be initiated precisely. At the same time it is achieved that the drive device 38 the storage of the thread guide 18th takes over. This is practically flying through the Drive device 38 mounted so that on the additional Arrangement of additional bearings or the like can be dispensed with can.
  • the centrifuge spinning device 12 is also a cover 54 assigned on the one hand to the drive device 38 and on the other hand at the upper end of the thread guide 18th supported.
  • the cover 54 has one flexible cylindrical sheath 56 which the thread guide 18th engages above the drive device 38.
  • the wrapping 56 is used, for example, by a so-called bellows educated.
  • the cover 54 ensures a seal of the positive connection between the thread guide 18 and of the drive device 38. This in particular avoided that during operation of the Centrifuge spinning devices 12 more or less inevitable fiber fly or the like one Impairment of the function of the drive device 38 could cause. Due to the flexibility of the casing 56 can the cover 54 of the lifting movement of the thread guide 18 without more to follow. The seal is thus during everyone Operating phase of the centrifuge spinning device 12 guaranteed.
  • the positive connection between the Drive device 38 and the thread guide 18 also in this way be designed so that the drive device 38, for example is designed as a traveling wave motor, the actuator in Friction with the thread guide 18 is. This will also an immediate, that is, in a simple manner direct transmission of the drive energy to the thread guide 18 possible.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Centrifugal Separators (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Moulding By Coating Moulds (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)

Abstract

The centrifugal spinning machine has at least one spinning station (10), each with a rotating spinning pot (14), a guide (18) to lead in the roving (26') feed, and a drive (38) to give an axial movement between the roving guide (18) and the spinning pot (14). The roving yarn (26) at the guide (18) passes through the rotary axis of a rotor (46) of the drive (38). The drive is an electromotor, with a direct working action between the rotor (46) and the guide (18), where the rotor (46) is a cylinder (48) which holds the guide (18) in a positive fit. The cylinder (48) has an inner threading (50) which meshes with the outer threading (52) round the guide (18). The electromotor is a step motor (40). The guide (18) has an axial movement, keyed (58) against rotation in its mounting at the drive (38). The drive (38) has a shrouding (54) to prevent the entry of fiber debris and the like, as a flexible cylindrical cover (56), which grips at least partially round the guide (18). An Independent claim is included for a centrifugal spinning process where the roving yarn through the guide passes through the drive rotor axis, and the guide is moved axially by a direct action of the drive on it.

Description

Die Erfindung betrifft eine Zentrifugenspinnmaschine zum Herstellen von Garn mit den im Oberbegriff des Anspruchs 1 genannten Merkmalen sowie ein Verfahren zum Zentrifugenspinnen von Garn mit den im Oberbegriff des Anspruchs 9 genannten Merkmalen.The invention relates to a centrifuge spinning machine for Manufacture of yarn with the in the preamble of claim 1 mentioned features and a method for Centrifugal spinning of yarn with the in the preamble of Claim 9 mentioned features.

Eine Zentrifugen- oder Topfspinnmaschine und ein Verfahren der gattungsgemäßen Art sind beispielsweise aus der DE 42 08 039 A1 und der DE 43 24 039 A1 oder der US 3 314 223 A bekannt.
Derartige Zentrifugenspinnmaschinen umfassen in der Regel eine Vielzahl von Spinnstellen, die jeweils einen in Rotation versetzbaren Spinntopf (Zentrifuge) aufweisen. Derartigen Spinnstellen wird über eine Faserbandverzugseinrichtung, vorzugsweise einem Streckwerk, Faserband zugeführt, das unter der Wirkung des um seine Mittelachse rotierenden Spinntopfes zu einem Faden versponnen wird. Der Faden durchläuft dabei einen rohrförmigen Fadenführer und tritt an dessen Mündung, einen Garnschenkel bildend, aus.
Der Faden wird dabei an der Innenwand des Spinntopfes in Lagen als sogenannter Spinnkuchen abgelegt. Dieses Ablegen des Spinnkuchens erfolgt, indem eine Relativbewegung zwischen Fadenführer und Spinntopf in axialer Richtung erzeugt wird. Diese auch als Changierbewegung bezeichnete Relativbewegung wird durch eine Antriebseinrichtung für den Fadenführer und/oder den Spinntopf erzeugt.A centrifuge or pot spinning machine and a method of the generic type are known, for example, from DE 42 08 039 A1 and DE 43 24 039 A1 or US Pat. No. 3,314,223 A.
Centrifugal spinning machines of this type generally comprise a large number of spinning positions, each of which has a spin pot (centrifuge) which can be set in rotation. Such spinning stations are fed via a sliver drafting device, preferably a drafting device, sliver which is spun into a thread under the action of the spinning pot rotating about its central axis. The thread passes through a tubular thread guide and exits at its mouth, forming a thread leg.
The thread is deposited in layers on the inner wall of the spinning pot as a so-called spinning cake. This placing of the spinning cake takes place by generating a relative movement between the thread guide and the spinning pot in the axial direction. This relative movement, also referred to as a traversing movement, is generated by a drive device for the thread guide and / or the spinning pot.

Nach Beendigung der Spinnzeit beziehungsweise nach Erreichen einer vorbestimmten Garnmenge im Spinntopf wird das bis zu diesem Zeitpunkt gesponnene Material auf eine auf dem Fadenführer bereitgehaltene Umspulhülse umgewickelt.After the end of the spinning time or after reaching it a predetermined amount of yarn in the spinning pot is up to material spun onto one on the Thread guide held ready wound winding tube.

Aus der DE 41 02 549 A1 ist eine Ringspinneinrichtung bekannt, mit einer Antriebseinrichtungen zum Erzeugen einer axialen Relativbewegung zwischen einem auf einem Spinnring umlaufenden Läufer und einem auf einer Spindelbank angeordneten Garnträger. Die Antriebseinrichtung umfaßt beispielsweise einen Hubschlitten, der durch eine Spindelanordnung verlagerbar ist. Der Antrieb der Spindel erfolgt vorzugsweise elektromotorisch.
Bei diesen bekannten Antriebseinrichtungen ist nachteilig, daß eine relativ komplizierte Anordnung vorzusehen ist, die einen relativ großen Bauraum benötigt. Außerdem erfordert die frei liegenden Antriebsspindel einen relativ hohen Wartungsaufwand, da sie, insbesondere in der Faserflug beaufschlagten Umgebung einer Spinnerei, stark zur Verflusung neigt.A ring spinning device is known from DE 41 02 549 A1, with a drive device for generating an axial relative movement between a rotor rotating on a spinning ring and a yarn carrier arranged on a spindle bench. The drive device comprises, for example, a lifting carriage which can be displaced by a spindle arrangement. The spindle is preferably driven by an electric motor.
In these known drive devices, it is disadvantageous that a relatively complicated arrangement has to be provided which requires a relatively large installation space. In addition, the exposed drive spindle requires a relatively high level of maintenance, since, particularly in the fiber flight environment of a spinning mill, it has a strong tendency to flow.

Der Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung und ein Verfahren zu schaffen, mit der/dem in einfacher Weise eine Relativbewegung zwischen einem Fadenführer und einem Spinntopf erzielbar ist.The invention has for its object a device and to create a process with which in a simple manner a relative movement between a thread guide and a Spinning pot is achievable.

Erfindungsgemäß wird diese Aufgabe durch eine Zentrifugenspinnmaschine mit den im Anspruch 1 genannten Merkmalen gelöst.According to the invention, this object is achieved by a Centrifuge spinning machine with those mentioned in claim 1 Features resolved.

Dadurch, daß der im Fadenführer geführte Faden durch die Drehachse des Rotors der Antriebseinrichtung läuft ist eine sehr kompakte Bauweise möglich. The fact that the thread in the thread guide through the The axis of rotation of the rotor of the drive device is running very compact design possible.

Das heißt, auf die Anordnung von Zwischenübertragungsgliedern kann verzichtet werden. Neben der Einsparung an Bauraum wird dadurch auch eine erhebliche Montagevereinfachung erzielt.That is, on the arrangement of intermediate transfer links can be dispensed with. In addition to saving on installation space this also considerably simplifies assembly.

Des weiteren wird durch die Verringerung der anzutreibenden Masse erreicht, daß der Energieeinsatz zum Erzeugen einer Relativbewegung zwischen Fadenführer und Spinntopf minimiert ist. Somit wird die Effektivität der gesamten Zentrifugenspinnvorrichtung erhöht.Furthermore, by reducing the amount to be driven Mass achieved that the energy used to generate a Relative movement between thread guide and spinning pot minimized is. Thus, the effectiveness of the whole Centrifuge spinning device increased.

Es ist vorgesehen, daß die Antriebseinrichtung ein Elektromotor ist, dessen Rotor mit dem Fadenführer unmittelbar wirkverbunden ist, wobei vorzugsweise der Rotor ein Zylinder ist, der den Fadenführer formschlüssig aufnimmt. Hierdurch wird in besonders einfacher Weise eine Übertragung der Antriebsenergie des Elektromotors auf den Fadenführer möglich, da der Rotor des Elektromotors unmittelbar auf den Fadenführer wirkt. Insbesondere wird somit eine sehr genaue Positionierung des Fadenführers möglich, da durch das Fehlen von zwischengeschalteten Übertragungsgliedern Toleranzfehler, Schlupffehler oder dergleichen vermieden werden.It is intended that the drive device is an electric motor, the Rotor is directly operatively connected to the thread guide, preferably the rotor is a cylinder that the Thread guide takes form-fitting. This will in a particularly simple way of transferring the Driving energy of the electric motor on the thread guide possible because the rotor of the electric motor directly on the Thread guide works. In particular, it becomes a very accurate one Positioning of the thread guide possible because of the absence tolerance errors of intermediate transmission elements, Slip errors or the like can be avoided.

Eine vorteilhafte Ausführungsform ist gegeben, wenn der Rotor des Elektromotors, wie im Anspruch 4 dargelegt, eine Innenverzahnung aufweist, die mit einer Außenverzahnung des Fadenführers kämmt. Hierdurch wird eine sichere, formschlüssige Verbindung zwischen dem Rotor und dem Fadenführer erreicht. Über das Außengewinde des Fadenführers sowie das entsprechende Innengewinde des Rotors kann die Relativbewegung des Fadenführers bezüglich des Spinntopfes exakt reproduzierbar eingestellt werden. An advantageous embodiment is given when the rotor of the electric motor, as set out in claim 4, a Has internal toothing, which with an external toothing of Thread guide combs. This ensures a safe, positive connection between the rotor and the Thread guide reached. Via the external thread of the thread guide and the corresponding internal thread of the rotor can Relative movement of the thread guide with respect to the spinning pot can be set exactly reproducible.

Ferner ist in bevorzugter Ausgestaltung der Erfindung vorgesehen, daß der Elektromotor ein Schrittmotor ist (Anspruch 5). Hierdurch kann durch entsprechende definierte Ansteuerung des Schrittmotors eine exakte Positionierung beziehungsweise exakte axiale Verlagerung des Fadenführers relativ zu dem Spinntopf realisiert werden. Entsprechend der Ansteuerung des Schrittmotors erfolgt eine proportionale Verlagerung des Fadenführers, so daß der am Innenumfang des Spinntopfes abgelegte Spinnkuchen sich durch eine gleichmäßige Fadenlage auszeichnet.Furthermore, in a preferred embodiment of the invention provided that the electric motor is a stepper motor (Claim 5). This can be defined by appropriate Control of the stepper motor an exact positioning or exact axial displacement of the thread guide can be realized relative to the spinning pot. According to the The stepper motor is controlled proportionally Shifting the thread guide so that the on the inner circumference of the Spinnkuchen deposited spinning pot through a uniform thread position.

Erfindungsgemäß wird die Aufgabe ferner durch ein Verfahren mit den im Anspruch 9 genannten Merkmalen gelöst. Dadurch, daß der im Fadenführer geführte Faden durch die Drehachse eines Rotors der Antriebseinrichtung läuft, wobei der Fadenführer zum Erzielen einer Axialbewegung unmittelbar mit einer Antriebskraft beaufschlagt wird, läßt sich eine sehr genaue Relativbewegung des Fadenführers zu dem Spinntopf erzielen. Dieses unmittelbare Angreifen der Antriebskraft an den Fadenführer führt zu einer Minimierung der Positionierungsfehler während der Relativbewegung des Fadenführers. Hierdurch läßt sich die Qualität der erzielten Spinnkuchen in hohem Maße optimieren.According to the invention, the object is further achieved by a method solved with the features mentioned in claim 9. Thereby, that the thread guided in the thread guide through the axis of rotation a rotor of the drive device runs, the Thread guide to achieve an axial movement immediately with a driving force is applied, a very achieve precise relative movement of the thread guide to the spinning pot. This immediate attack on the driving force the thread guide leads to a minimization of the Positioning error during the relative movement of the Yarn guide. This allows the quality of the achieved Optimize spin cake to a high degree.

Weitere bevorzugte Ausgestaltungen der Erfindung ergeben sich aus den übrigen, in den Unteransprüchen genannten Merkmalen.Further preferred configurations of the invention result from the other features mentioned in the subclaims.

Die Erfindung wird nachfolgend anhand eines in den Zeichnungen dargestellten Ausführungsbeispiels näher erläutert. The invention is described in the following in the Drawings shown embodiment closer explained.

Es zeigt:

Fig.1
eine erfindungsgemäße Zentrifugenspinnstelle in Seitenansicht, teilweise im Schnitt,
Fig.2
die Verdrehsicherung für den Fadenführer in einem größerern Maßstab.
It shows:
Fig.1
a centrifuge spinning station according to the invention in side view, partly in section,
Fig.2
the twist lock for the thread guide on a larger scale.

In der Figur ist eine Spinnstelle 10 einer Zentrifugen- oder Topfspinnmaschine gezeigt. Zentrifugenspinnmaschinen besitzen in der Regel eine Vielzahl derartiger Spinnstellen 10, die entweder reihenförmig oder ringförmig nebeneinanderliegend angeordnet sind. Jede Spinnstelle 10 besitzt eine Zentrifugenspinnvorrichtung 12, die in der Figur 1 in einem schematischen Längsschnitt dargestellt ist.
Die Zentrifugenspinnvorrichtung 12 umfaßt einen rotierbar gelagerten, antreibbaren Spinntopf (Zentrifuge) 14, in dessen Innenraum 16 ein Fadenführer 18 eingreift. Die Längsachse 22 des Fadenführers 18 fällt dabei mit der Drehachse 24 des Spinntopfs 14 zusammen.
Durch den Fadenführer 18 kann ein in einem Streckwerk 32 verstrecktes Vorgarn 26' in die Spinnzentrifuge 14 eingeführt werden, das anschließend unter der Wirkung der rotierenden Spinnzentrifuge 14 zu einem Faden 26 versponnen wird. Der unter Ausbildung eines Fadenschenkels 28 aus der Fadenführermündung 36 austretende Faden 26 wird dabei als sogenannter Spinnkuchen 20 an der Innenwandung 30 der Spinnzentrifuge 14 abgelegt.In the figure, a spinning station 10 of a centrifuge or pot spinning machine is shown. Centrifugal spinning machines generally have a large number of such spinning stations 10, which are arranged either in rows or in rings next to one another. Each spinning station 10 has a centrifuge spinning device 12, which is shown in FIG. 1 in a schematic longitudinal section.
The centrifuge spinning device 12 comprises a rotatably mounted, drivable spin pot (centrifuge) 14, in the interior 16 of which a thread guide 18 engages. The longitudinal axis 22 of the thread guide 18 coincides with the axis of rotation 24 of the spinning pot 14.
A roving 26 'stretched in a drafting device 32 can be introduced into the spinning centrifuge 14 by the thread guide 18 and is subsequently spun into a thread 26 under the action of the rotating spinning centrifuge 14. The thread 26 emerging from the thread guide opening 36 while forming a thread leg 28 is deposited as a so-called spin cake 20 on the inner wall 30 of the spinning centrifuge 14.

Dem Fadenführer 18 ist eine Antriebseinrichtung 38 zugeordnet, mittels der eine axiale Relativbewegung des Fadenführers 18 und somit dessen Mündung 36 zur Spinnzentrifuge 14 vorgebbar ist. Die Relativbewegung des Fadenführers 18 erfolgt dabei einerseits changierend, anderseits wird der Fadenführer 18 ständig etwas nach unten verlagert, so daß der Spinnkuchen 20 eine sogenannte Kopswicklung erhält.
Die Antriebseinrichtung 38 ist vorzugsweise als Schrittmotor 40 ausgebildet, der über eine Steuereinrichtung 42 ansteuerbar ist. Der Schrittmotor 40 umfaßt einen ortsfest gelagerten Stator 44 sowie einen innerhalb des Stators angeordneten Rotor 46. Aufbau und Wirkungsweise von Schrittmotoren 40 sind allgemein bekannt, so daß im Rahmen der vorliegenden Beschreibung hierauf nicht näher eingegangen werden soll.
Der Rotor 46 ist als Zylinder 48 ausgebildet, der ein Innengewinde 50 besitzt. Das Innengewinde 50 kämmt mit einem Außengewinde 52 des Fadenführers 18. Die kämmenden Gewinde 50 und 52 führen zu einer formschlüssigen Wirkverbindung zwischen der Antriebseinrichtung 38 und dem Fadenführer 18. Der Fadenführer 18 selber ist hierbei durch eine Verdrehsicherung 58, die in Fig. 2 näher dargestellt ist, gegen Rotation festgelegt.A drive device 38 is assigned to the thread guide 18, by means of which an axial relative movement of the thread guide 18 and thus its mouth 36 to the spinning centrifuge 14 can be predetermined. The relative movement of the thread guide 18 takes place on the one hand in an oscillating manner, on the other hand the thread guide 18 is constantly shifted somewhat downwards, so that the spinning cake 20 is given a so-called cop winding.
The drive device 38 is preferably designed as a stepper motor 40 which can be controlled via a control device 42. The stepper motor 40 comprises a stationary stator 44 and a rotor 46 arranged inside the stator. The structure and mode of operation of stepper motors 40 are generally known, so that this description is not intended to be discussed in greater detail here.
The rotor 46 is designed as a cylinder 48 which has an internal thread 50. The internal thread 50 meshes with an external thread 52 of the thread guide 18. The meshing threads 50 and 52 lead to an interlocking operative connection between the drive device 38 and the thread guide 18. The thread guide 18 itself is in this case by an anti-rotation device 58, which is shown in more detail in FIG. 2 is fixed against rotation.

Funktion der Zentrifugenspinnvorrichtung:Function of the centrifuge spinning device:

Während des Betriebes der Spinnstelle 10 wird die Spinnzentrifuge 14 durch eine elektromotorische Antriebseinrichtung 64 mit hoher Drehzahl um die Drehachse 24 rotiert. Außerdem wird über einen Fadenführer 18 Vorgarn 26', das vorher z.B. in einem Streckwerk 32 verstreckt wurde, in die Spinnzentrifuge 14 eingespeist. Das aus der Fadenführermündung 36 austretende Vorgarn legt sich unter der Wirkung der in der Spinnzentrifuge 14 umlaufenden Rotationsströmung an die Innenwandung 30 der Spinnzentrifuge 14 an und wird dabei zu einem Faden 26 versponnen. Der zwischen der Fadenführermündung 36 und der Innenwandung 30 der Spinnzentrifuge 14 einen umlaufenden Fadenschenkel 28 bildende Faden 26 lagert sich an der Innenwandung 30 des Spinntopfes 14 an und bildet dort einen sogenannten Spinnkuchen 20.
Zur Ausbildung eines möglichst gut umspulbaren Spinnkuchens 20, wird der Faden 26 dabei nach Art einer Kopswicklung auf der Innenwandung 30 des Spinntopf 14 abgelegt.
Das heißt, der Fadenführer 18 wird, wie an sich bekannt, stets um einen bestimmten, gleichbleibenden Hub hin- und herchangiert und dabei gleichzeitig bezüglich des rotierenden Spinntopfes 14 fortlaufend etwas nach unten verlagert. Hierdurch wird auch die Mündung 36 des Fadenführers 18 relativ zur Innenwandung 30 des Spinntopfes 14 verlagert, so daß der Anlagebereich des Fadenschenkels 28 entsprechend variiert. Die vorbeschriebene Fadenablagetechnik, die zur Ausbildung eines gut umspulbaren Spinnkuchens 20 führt, wird über die Steuereinrichtung 42 vorgegeben, die eine entsprechend manuell vorgebbare oder über eine Recheneinheit programmierbare Ansteuerung der Antriebseinrichtung 38 übernimmt.During the operation of the spinning station 10, the spinning centrifuge 14 is rotated about the axis of rotation 24 at high speed by an electromotive drive device 64. In addition, roving 26 ', which was previously drawn, for example, in a drafting device 32, is fed into the spinning centrifuge 14 via a thread guide 18. The roving emerging from the thread guide orifice 36 rests against the inner wall 30 of the spinning centrifuge 14 under the effect of the rotating flow circulating in the spinning centrifuge 14 and is thereby spun into a thread 26. The thread 26 forming a circumferential thread leg 28 between the thread guide mouth 36 and the inner wall 30 of the spinning centrifuge 14 is attached to the inner wall 30 of the spinning pot 14 and forms a so-called spinning cake 20 there.
To form a spin cake 20 that can be rewound as easily as possible, the thread 26 is placed on the inner wall 30 of the spin pot 14 in the manner of a cop winding.
That is, as is known per se, the thread guide 18 is always shifted back and forth by a certain, constant stroke and at the same time is continuously shifted slightly downward with respect to the rotating spinning pot 14. As a result, the mouth 36 of the thread guide 18 is also displaced relative to the inner wall 30 of the spin pot 14, so that the contact area of the thread leg 28 varies accordingly. The thread depositing technique described above, which leads to the formation of a spool cake 20 that can be easily rewound, is specified via the control device 42, which takes over a correspondingly manually specifiable or programmable control of the drive device 38 via a computing unit.

Entsprechend der Ansteuerung der Antriebseinrichtung 38, hier des Schrittmotors 40, erfolgt eine Rotation seines Rotors 46, das heißt des Zylinders 48, so daß es aufgrund der formschlüssigen Verbindung zwischen dem Innengewinde 50 des Rotors 46 und dem Außengewinde 52 des durch eine Verdrehsicherung 58 gegen Rotation festgelegten Fadenführers 18 zu einer axialen Verlagerung des Fadenführes 18 kommt.
Die Verdrehsicherung 58 kann, wie in Fig.2 angedeutet, aus einer Längsnut 60 im Bereich des Außengewindes 52 des Fadenführers 18 und Sicherungselement 62 bestehen. Das z.B. drehfest am Stator 44 des Schrittmotors 40 festgelegte Sicherungselement 62 faßt dabei in die Längsnut 60.Corresponding to the actuation of the drive device 38, here the stepping motor 40, its rotor 46, that is to say the cylinder 48, rotates so that it is due to the positive connection between the internal thread 50 of the rotor 46 and the external thread 52 against rotation by means of an anti-rotation device 58 fixed thread guide 18 comes to an axial displacement of the thread guide 18.
The anti-rotation device 58 can, as indicated in FIG. 2, consist of a longitudinal groove 60 in the area of the external thread 52 of the thread guide 18 and securing element 62. The securing element 62, which is fixed, for example, in a rotationally fixed manner on the stator 44 of the stepping motor 40, thereby fits into the longitudinal groove 60.

Dadurch, daß die Antriebseinrichtung 38 den Fadenführer 18 quasi umgreift, ist nur ein äußerst geringer Bauraum zur Anordnung der Antriebseinrichtung 38 notwendig. Ferner wird hierdurch erreicht, daß der Aktor, hier der Rotor 46, unmittelbar mit dem Fadenführer 18 wirkverbunden ist. Hierdurch wird die Anordnung von Zwischenübertragungsgliedern nicht notwendig. Die Antriebskraft kann somit unmittelbar und präzise eingeleitet werden. Gleichzeitig wird erreicht, daß die Antriebseinrichtung 38 die Lagerung des Fadenführers 18 übernimmt. Dieser ist quasi fliegend durch die Antriebseinrichtung 38 gelagert, so daß auf die zusätzliche Anordnung weiterer Lager oder dergleichen verzichtet werden kann.Characterized in that the drive device 38 the thread guide 18th almost encompasses, there is only an extremely small amount of space available Arrangement of the drive device 38 necessary. Furthermore, hereby achieved that the actuator, here the rotor 46, directly is operatively connected to the thread guide 18. hereby the arrangement of intermediate transmission members is not necessary. The driving force can thus be immediate and be initiated precisely. At the same time it is achieved that the drive device 38 the storage of the thread guide 18th takes over. This is practically flying through the Drive device 38 mounted so that on the additional Arrangement of additional bearings or the like can be dispensed with can.

Der Zentrifugenspinnvorrichtung 12 ist ferner eine Abdeckung 54 zugeordnet, die sich einerseits an der Antriebseinrichtung 38 und andererseits am oberen Ende des Fadenführers 18 abstützt. Die Abdeckung 54 besitzt eine im wesentlichen flexible zylindrische Umhüllung 56, die den Fadenführer 18 oberhalb der Antriebseinrichtung 38 umgreift. Die Umhüllung 56 wird beispielsweise von einem sogenannten Faltenbalg gebildet. The centrifuge spinning device 12 is also a cover 54 assigned on the one hand to the drive device 38 and on the other hand at the upper end of the thread guide 18th supported. The cover 54 has one flexible cylindrical sheath 56 which the thread guide 18th engages above the drive device 38. The wrapping 56 is used, for example, by a so-called bellows educated.

Die Abdeckung 54 gewährleistet eine Abdichtung der formschlüssigen Verbindung zwischen dem Fadenführer 18 und der Antriebseinrichtung 38. Hierdurch wird insbesondere vermieden, daß während des Betriebes der Zentrifugenspinnvorrichtungen 12 mehr oder weniger zwangsläufig anfallender Faserflug oder dergleichen eine Beeinträchtigung der Funktion der Antriebseinrichtung 38 bewirken könnte. Durch die Flexibilität der Umhüllung 56 kann die Abdeckung 54 der Hubbewegung des Fadenführers 18 ohne weiteres folgen. Die Abdichtung ist somit während jeder Betriebsphase der Zentrifugenspinnvorrichtung 12 gewährleistet.The cover 54 ensures a seal of the positive connection between the thread guide 18 and of the drive device 38. This in particular avoided that during operation of the Centrifuge spinning devices 12 more or less inevitable fiber fly or the like one Impairment of the function of the drive device 38 could cause. Due to the flexibility of the casing 56 can the cover 54 of the lifting movement of the thread guide 18 without more to follow. The seal is thus during everyone Operating phase of the centrifuge spinning device 12 guaranteed.

Nach weiteren, nicht dargestellten Ausführungsbeispielen kann die kraftschlüssige Verbindung zwischen der Antriebseinrichtung 38 und dem Fadenführer 18 auch derart gestaltet sein, daß die Antriebseinrichtung 38 beispielsweise als Wanderwellenmotor ausgebildet ist, deren Aktor in Reibschluß mit dem Fadenführer 18 steht. Hierdurch wird ebenfalls in einfacher Weise eine unmittelbare, das heißt direkte Übertragung der Antriebsenergie auf den Fadenführer 18 möglich.According to further, not shown embodiments the positive connection between the Drive device 38 and the thread guide 18 also in this way be designed so that the drive device 38, for example is designed as a traveling wave motor, the actuator in Friction with the thread guide 18 is. This will also an immediate, that is, in a simple manner direct transmission of the drive energy to the thread guide 18 possible.

Claims (8)

  1. Centrifugal spinning machine having at least one spinning station, each comprising a rotatable spinning can (14), a yarn guide (18) arranged to receive roving yarn, and a drive device (38) for generating relative motion axially between yarn guide (18) and spinning can (14), wherein a yarn emerging from the yarn guide can be deposited as a spinning cake (20) on the inside wall of the spinning can (14), and the yarn (26) guided in the yarn guide (18) runs through the axis of rotation of a rotor (46) of the drive device (38), characterised in that the drive device (38) is an electric motor, the rotor (46) of which is operatively connected directly to the yarn guide (18).
  2. Centrifugal spinning machine according to claim 1, characterised in that the rotor (46) is a cylinder (48) in positive engagement with the yarn guide (18).
  3. Centrifugal spinning machine according to claim 2, characterised in that the cylinder (48) has a female thread (50) in meshing engagement with a male thread (52) of the yarn guide (18).
  4. Centrifugal spinning machine according to any of the preceding claims, characterised in that the electric motor is a stepping motor (40).
  5. Centrifugal spinning machine according to any of the preceding claims, characterised in that the yarn guide (18) is axially movable and is guided via an anti-torsion device (58) fixed in the drive device (38).
  6. Centrifugal spinning machine according to any of the preceding claims, characterised in that the drive device (38) has a covering (54) to shield against entry of lint or the like.
  7. Centrifugal spinning machine according to claim 6, characterised in that the covering (54) is a flexible cylindrical sheath (46) fitted at least partly around the yarn guide (18).
  8. Method for centrifugal spinning of yarn, in which a roving yarn is introduced via a yarn guide (18) into a rotating spinning can (14) and is deposited on the inside wall of the spinning can (14), the yarn guide (18) being axially shifted relative to the spinning can (14) by a drive device to form a spinning cake (20), the yarn guided in the yarn guide running through the axis of rotation of a rotor of a drive device, characterised in that to achieve axial motion, the yarn guide is subjected directly to the driving force of an operatively connected rotor (46) of an electric motor.
EP00100169A 1999-02-12 2000-01-11 Pot spinning machine and method for centrifugal spinning Expired - Lifetime EP1028181B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19905859 1999-02-12
DE19905859A DE19905859A1 (en) 1999-02-12 1999-02-12 Centrifugal spinning machine and method for centrifugal spinning

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EP1028181A1 EP1028181A1 (en) 2000-08-16
EP1028181B1 true EP1028181B1 (en) 2003-06-25

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US (1) US6240715B1 (en)
EP (1) EP1028181B1 (en)
JP (1) JP2000234221A (en)
CN (1) CN1263905C (en)
AT (1) ATE243785T1 (en)
DE (2) DE19905859A1 (en)
TR (1) TR200000389A2 (en)

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DE10258261A1 (en) 2002-12-13 2004-06-24 Saurer Gmbh & Co. Kg spinning beam
JP6402891B2 (en) * 2014-03-06 2018-10-10 Toto株式会社 Remote control device

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH323562A (en) * 1954-09-08 1957-08-15 Spinnerei Karl Marx Veb Linearly guided traversing device for centrifugal rayon spinning machines
NL132553C (en) * 1962-10-30 Bobkowicz E
DE4102549A1 (en) 1991-01-29 1992-07-30 Schlafhorst & Co W Spinning frame - has separate drives for traverse winding motion and lifter mechanism
DE4103771A1 (en) * 1991-02-08 1992-08-13 Schlafhorst & Co W METHOD AND DEVICE FOR PRODUCING A THREAD BY CENTRIFUGAL SPINNING
DE4208039C2 (en) 1992-03-13 2002-01-17 Schlafhorst & Co W Pot spinning device
DE4236379C2 (en) * 1992-10-28 2001-10-18 Schlafhorst & Co W Method and device for rewinding yarn in a pot spinning device
DE4324039A1 (en) 1993-07-17 1995-01-19 Schlafhorst & Co W Transport system on a can-spinning machine
DE19548675A1 (en) * 1995-12-23 1997-06-26 Csm Gmbh Spinning tube drive for centrifugal or vacuum spinner

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JP2000234221A (en) 2000-08-29
CN1263905C (en) 2006-07-12
DE50002624D1 (en) 2003-07-31
TR200000389A3 (en) 2000-09-21
US6240715B1 (en) 2001-06-05
CN1263174A (en) 2000-08-16
ATE243785T1 (en) 2003-07-15
EP1028181A1 (en) 2000-08-16
TR200000389A2 (en) 2000-09-21
DE19905859A1 (en) 2000-08-17

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