EP1071837B1 - Method and device for spinning with a suppressed yarn balloon - Google Patents

Method and device for spinning with a suppressed yarn balloon Download PDF

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Publication number
EP1071837B1
EP1071837B1 EP99924728A EP99924728A EP1071837B1 EP 1071837 B1 EP1071837 B1 EP 1071837B1 EP 99924728 A EP99924728 A EP 99924728A EP 99924728 A EP99924728 A EP 99924728A EP 1071837 B1 EP1071837 B1 EP 1071837B1
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EP
European Patent Office
Prior art keywords
spinning
spindle
thread
thread guide
speed
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EP99924728A
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German (de)
French (fr)
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EP1071837A1 (en
Inventor
Rainer Löscher
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Oerlikon Textile GmbH and Co KG
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Zinser Textilmaschinen GmbH
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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H7/00—Spinning or twisting arrangements
    • D01H7/02—Spinning or twisting arrangements for imparting permanent twist
    • D01H7/04—Spindles
    • D01H7/18—Arrangements on spindles for suppressing yarn balloons
    • 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
    • D01H1/02—Spinning or twisting machines in which the product is wound-up continuously ring type
    • D01H1/025—Spinning or twisting machines in which the product is wound-up continuously ring type with a condensing device between drafting system and spinning unit
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H9/00—Arrangements for replacing or removing bobbins, cores, receptacles, or completed packages at paying-out or take-up stations ; Combination of spinning-winding machine
    • D01H9/02—Arrangements for replacing or removing bobbins, cores, receptacles, or completed packages at paying-out or take-up stations ; Combination of spinning-winding machine for removing completed take-up packages and replacing by bobbins, cores, or receptacles at take-up stations; Transferring material between adjacent full and empty take-up elements

Definitions

  • the invention relates to a method and an apparatus for spinning with suppressed Thread balloon, the rotation of the thread predominantly between a spindle attachment and the nip of delivery rollers at the exit of the Drafting system is generated, with the spindle attachment in its head area is provided with one or more projections and with these projections on the extended axis of the spindle from below to one extends vertically adjustable thread guide, and being used to prepare a automated bobbin change the vertically adjustable thread guide from the spindle attachment moved upwards and the ring bench then in the downwind position is lowered.
  • the thread balloon is suppressed and the thread can be reduced Voltage can be wound on the coil. There are also advantages regarding the running properties of the runner.
  • spinning was therefore preferred Yarns, especially fine carded or worsted yarns, mainly spinning with a reduced thread balloon using so-called balloon limiting rings.
  • the increase in speed and thus the increase in performance the spinning machine is limited.
  • the object of the present invention is to propose a spinning process with a spinning head and suppressed thread balloon, which allows very fine and smooth threads to be produced with high reliability at high spindle speeds and with automated spool change.
  • the object of the invention is also a device for reliable implementation propose the process with the least design effort also the phases between the normal spinning process and the spool change can perform in an optimal way.
  • the parameters according to claim 3 contribute to the further optimization of this process when stopping before changing bobbins.
  • Claim 4 defines the details of the process steps when restarting the spinning machine after changing the bobbin.
  • Claim 5 recommends the defined procedural steps for a stopping and Start-up program in which no bobbin change is provided.
  • the device according to claim 6 allows the optimal execution of the method according to claim 1 and also ensures high reliability the compression process under the conditions of balloon-reduced spinning.
  • the exact setting of the distance between the thread guide and the spinning head is the prerequisite for the use of spinning heads with a very small cross-section.
  • the sleeves can also be relatively low and narrow Spinning heads are moved without the latter for the execution of the Coil change must decrease.
  • the design effort is kept low.
  • the time required for changing the bobbin is reduced.
  • the ring spinning machine has a large number of spindles 1 in the usual way.
  • So-called spindle attachments 2 are attached to these spindles 1 at the top. In the example chosen, it is a so-called spinning finger. It is also possible to provide a corresponding spinning crown in its place (see, for example, DE 26 53 697 C2). These spindle attachments 2 are inserted into a corresponding bore of the spindle 1 under prestress. These spindle attachments 2 are only changed for the purpose of maintenance.
  • the cross sections of these spindle attachments 2 are designed so that the sleeve 12 or the coil 13 can be lifted out above them. Parallel to the axis of the spindles 1, the ring bench 4 is arranged in the usual sense to be raised and lowered.
  • the ring bank 4 carries for each spindle 1 a spinning ring 41 on which the ring traveler 42 is guided in a sliding manner.
  • the ring traveler 42 deposits the thread fed into the balloon 75 on the surface of the bobbin 13.
  • the thread guide 3 is arranged directly above the spindle attachment 2 during main spinning.
  • This thread guide 3 is attached to a swivel arm 31 which is fixedly connected to the shaft 32.
  • the shaft 32 is pivotally guided on a lifting slide 33.
  • a slide guide 331 fixed to the frame is assigned to the lifting slide 33. This slide guide 331 is aligned parallel to the axis of the spindles 1.
  • the lifting slide 33 is driven in a vertically movable manner by spindles 341.
  • the spindle 341 is rotated by the motor 34, which receives its control program from a central machine control.
  • This motor 34 is suitable for moving the lifting carriage 33 with the thread guide 3 from the position 3 exactly by the stroke size or the distance 35 into the position 3 'and back.
  • the drafting unit 5 of the ring spinning machine is provided with a compression arrangement in the present case.
  • This compacting arrangement is immediately downstream of the pair of output rollers 51 of the drafting unit 5.
  • a strap 61 perforated along a central line encompasses a suction shoe 62 and the lower delivery roller 521.
  • the lower delivery roller 521 which supports the apron 61 from the inside, receives its drive from a separate drive roller 53, which generally extends over the entire length of the machine.
  • the upper delivery roller 522 lies non-positively on the perforated strap and, together with this strap, forms the clamping gap 523.
  • the operation of this compression arrangement is described in detail in an older, not previously published patent application DE 197 08 410.9.
  • suction shoe 62 is connected to a central suction channel 64 via a suction pipe 63.
  • the pressure in this system (62, 63, 64) can be designed independently of the negative pressure which is generated in the suction channel 55 and which is used for cleaning certain zones in the area of the spinning machine (e.g. suction tube 54).
  • the fully drawn fuse 71 is conveyed through the nip 511 of the pair of output rollers 51 into the compression zone (FIG. 2).
  • the suction fibers 62 collect and fix the individual fibers of the fuse over the holes in the perforation of the strap 61 as stretched and compressed fuse 72.
  • the fuse 72 thus compressed arrives in the nip 523 of the delivery rollers 521, 522.
  • the turns made in the thread due to the mode of action of the spindle attachment 2 in connection with the thread guide 3 also reach the clamping gap 523 via the thread section 73.
  • the fibers of the compressed fuse 72 are twisted directly at the clamping gap 523 - almost without the dreaded spinning triangle - in such a way that all fibers are held firmly against one another.
  • the thread is practically completely finished at the exit of the clamping gap 523 and has the predetermined, or at least the high strength necessary there.
  • the thread - the thread piece 74 - is guided in at least one turn around the spindle attachment 2, around the upper part of the spindle 1 and possibly around the upper part of the sleeve 12. Relatively close to the plane of movement of the ring traveler 42, this piece of thread 74 leaves the surface of the sleeve 12 or spindle 1 and forms a small thread balloon 75.
  • This relatively small thread balloon 75 is only subject to low air resistance and low centrifugal force.
  • the thread tension is correspondingly low there and thus also in the thread section 73.
  • These optimal spinning conditions are regularly guaranteed during the normal spinning process (here referred to as main spinning).
  • the load on the thread is low.
  • a thread is created which has a high uniformity and a high strength.
  • the hairiness of the thread is very low, in particular due to the use of the compression arrangement.
  • the spindle attachment 2, here designed as a spinning finger is practically no longer able to brush fibers out of the solid fiber composite of the thread, which then negatively influence the quality of the thread.
  • a first step the speed of spindle 1 is significantly reduced - for example to a value between 2,000 and 6,000 rpm. If this low spindle speed is reached, the thread guide 3 is moved upwards by approximately 30 to 50 mm parallel to the axis of the spindle 1 by means of a corresponding control command to the motor 34.
  • the thread delivered simultaneously by the delivery rollers 521 and 522 thereby forms a balloon immediately below the raised thread guide 3 ', which lifts out of the projections of the spindle attachment 2. Due to the action of the ring traveler 42, the turns of the thread section 74 which are still present for a short time around the spindle attachment 2 and the sleeve 12 are wound onto the bobbin 13.
  • the spinning machine now works according to the usual method of spinning with thread balloon 75 '(FIG. 4). Once the thread balloon 75 'has formed properly, the ring rail 4 can move into the downwind position (FIG. 5) in the usual way. All processes take place as is usual on spinning machines that work with thread balloons.
  • the above-mentioned reduced spindle speed should be chosen so that the diameter of the thread balloon 75 'or 75 "that is created is as small as possible than the lateral distance between two balloon separating plates 43 which are arranged between adjacent spindles 1.
  • the thread guide 3 is pivoted upwards.
  • the thread 76 is tensioned between the thread guide 3 and the ring traveler 42 when the spinning machine is at a standstill so that it does not hinder the exchange of the bobbin 13 against a new sleeve 12.
  • the thread guide 3 is first pivoted back into its upper working position approximately at a distance 35 above the spindle attachment 2 (FIG. 6).
  • the spindle 1 begins its movement at a relatively low speed.
  • the resulting thread balloon 75 "is also so small in diameter that it can move between the balloon separating plates 43 with as little collision as possible.
  • the ring rail 4 moves to the height of the lower bobbin edge and begins to wind the bobbin attachment 131.
  • the thread guide 3 is moved again by the distance 35 in the direction of the bobbin attachment 2.
  • the spinning process begins again with the suppressed thread balloon 75 (FIG. 7).
  • the thread section 74 gripped by the spindle attachment 2 now winds one or more times around the shaft of the spindle attachment 2 and around the upper section of the sleeve 12.
  • the relatively small thread tension in the thread balloon 75 is only transferred to a small extent into the thread section 73
  • the spinning process can be continued with optimal conditions.
  • the advantage of the described method is that optimal conditions for the thread to be spun are effective in all phases during the normal spinning process and while the machine is running and starting.
  • optimal conditions for the thread to be spun are effective in all phases during the normal spinning process and while the machine is running and starting.
  • this combination leads to the fact that all fibers are already twisted with one another directly at the exit of the clamping gap 523 between the perforated strap 61 and the upper delivery roller 522.
  • the number of thread breaks in this critical area is reduced at the usual speeds of the spindles 1. Assuming the usual number of thread breaks as given, you can increase the speed of the spindle during main spinning in substantial orders of magnitude.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)

Description

Die Erfindung betrifft ein Verfahren und eine Vorrichtung zum Spinnen mit unterdrücktem Fadenballon, wobei die Drehung des Fadens überwiegend zwischen einem Spindelaufsatz und dem Klemmspalt von Lieferwalzen am Ausgang des Streckwerkes erzeugt wird, wobei der Spindelaufsatz in seinem Kopfbereich mit einem oder mehreren Vorsprüngen versehenen ist und sich mit diesen Vorsprüngen auf der verlängerten Achse der Spindel von unten her bis an einen vertikal verstellbaren Fadenführer erstreckt, und wobei zur Vorbereitung eines automatisierten Spulenwechsels der vertikal verstellbare Fadenführer vom Spindelaufsatz weg nach oben versetzt und die Ringbank anschließend in die Unterwindestellung abgesenkt wird.The invention relates to a method and an apparatus for spinning with suppressed Thread balloon, the rotation of the thread predominantly between a spindle attachment and the nip of delivery rollers at the exit of the Drafting system is generated, with the spindle attachment in its head area is provided with one or more projections and with these projections on the extended axis of the spindle from below to one extends vertically adjustable thread guide, and being used to prepare a automated bobbin change the vertically adjustable thread guide from the spindle attachment moved upwards and the ring bench then in the downwind position is lowered.

Es ist seit langem bekannt und üblich, zum Zweck der Herstellung von Garnen Spinnverfahren anzuwenden, bei denen die Spindeln unterhalb eines während des Spinnens meist feststehenden Fadenführers mit Spinnköpfen versehen sind. Diese Spinnköpfe drehen sich mit der oder - bei einigen Varianten - annähernd mit der Geschwindigkeit der Spindel und bringen im Faden die Drehung relativ nahe am Klemmspalt der Lieferwalzen auf. It has long been known and common for the purpose of manufacturing yarn To use spinning processes in which the spindles are below a while of spinning mostly fixed thread guides are provided with spinning heads. These spinning heads rotate with or - in some variants - approximately with the speed of the spindle and bring the rotation in the thread relatively close to the nip of the delivery rollers.

Der Fadenballon wird dabei unterdrückt und der Faden kann mit geringerer Spannung auf die Spule aufgewunden werden. Vorteile ergeben sich auch hinsichtlich der Laufeigenschaften des Läufers.The thread balloon is suppressed and the thread can be reduced Voltage can be wound on the coil. There are also advantages regarding the running properties of the runner.

Ein solches Verfahren wird in der Praxis jedoch nicht regelmäßig eingesetzt. Die Ursachen sind sehr differenziert.However, such a method is not used regularly in practice. The The causes are very different.

Die Verwendung von Spinnköpfen führt dazu, daß die Drehung des Fadens bereits sehr nahe am Klemmspalt der Walzen, die die Lunte in die Spinnzone liefern, abgeschlossen ist. Der dann fertig gesponnene Faden wird anschließend über die Mitnehmer des Spinnkopfes und spiralförmig über einen Teil der Spulenhülse bis hin zum Läufer am Spinnring geführt. Es hat sich gezeigt, daß die Anwendung dieses Spinnverfahrens zu einem sehr haarigen Faden führt.The use of spinner heads causes the twist of the thread already very close to the nip of the rollers that put the fuse in the spinning zone deliver is complete. The thread then spun is then finished over the drivers of the spinning head and spirally over part of the bobbin tube to the runner on the spinning ring. It has been shown that the Using this spinning process leads to a very hairy thread.

Die Anwendung des Verfahrens beschränkte sich daher auf das Spinnen solcher Fäden, bei denen die Haarigkeit erwünscht ist. Das sind Garne für Teppiche, für Decken oder Filze. (vgl. hierzu den Firmenprospekt der Fa. Rieter zur Streichgarn-Ringspinnmaschine H3 aus dem Jahre 1967)The application of the method was therefore limited to the spinning of such Threads where hairiness is desired. These are yarns for carpets, for Blankets or felts. (cf. the company brochure from Rieter for the carded thread ring spinning machine H3 from 1967)

Bei der Herstellung sehr feiner und glatter Garne, insbesondere Kammgarne, für Gewebe ist die Haarigkeit der Fäden ausgesprochen unerwünscht. Das Verfahren zum Spinnen mit unterdücktem Fadenballon wurde deshalb hierfür nicht angewandt.In the production of very fine and smooth yarns, especially worsted, for Fabric, the hairiness of the threads is extremely undesirable. The procedure therefore, spinning with the thread balloon suppressed was not made for this applied.

Mit dem Ziel die Qualität des mittels Spinnkopf gesponnenen Fadens weiter zu erhöhen, hat man versucht die Führung des Fadenführers oberhalb des Spinnkopfes beim Übergang vom ballonreduziertem Spinnen zum Spinnen mit einem Fadenballon zu verbessern (DE 34 15 977 A1 und 34 15 998 A1). Auch diese Maßnahmen waren nicht von Erfolg gekrönt. Die Haarigkeit des Fadens beim Spinnen mit Spinnkopf und unterdrücktem Fadenballon wurde auch mit einer verbesserten Führung des Fadenführers nicht beseitigt. With the aim of further increasing the quality of the thread spun using a spinning head try to guide the thread guide above the spinning head in the transition from reduced balloon spinning to spinning with one Thread balloon to improve (DE 34 15 977 A1 and 34 15 998 A1). This too Measures were unsuccessful. The hairiness of the thread at Spinning with a spinning head and suppressed thread balloon was also done with one improved guidance of the thread guide is not eliminated.

Aus den genannten Gründen bevorzugte man deshalb für das Spinnen feiner Garne, insbesondere feiner Streich- oder Kammgarne, überwiegend das Spinnen mit reduziertem Fadenballon unter Verwendung von sog. Ballonbegrenzungsringen. Die Drehzahlsteigerung und damit die Steigerung der Leistungsfähigkeit der Spinnmaschine hält sich hierbei jedoch in Grenzen.For the reasons mentioned, spinning was therefore preferred Yarns, especially fine carded or worsted yarns, mainly spinning with a reduced thread balloon using so-called balloon limiting rings. The increase in speed and thus the increase in performance the spinning machine is limited.

Bei der Anwendung dieses Verfahrens wurden in der Vergangenheit zunehmend sog. Verdichtungszonen im Bereich der Ausgangswalzen des Streckwerkes (DE 882 066) oder nach dem Streckwerk (EP 0 635 590 A2 bzw. 197 08 410 A1) angeordnet. Diese Verdichtungszonen sorgen dafür, daß die Fasern der verstreckten Lunte auf geringster Breite in den Klemmspalt der Lieferwalzen (Walzen, die die Lunte in die Spinnzone fördern) gelangen. Es bildet sich ein sehr kleines Spinndreieck aus. Die Gefahr des Fadenbruches wird so an dieser Stelle deutlich reduziert.In the past, using this method has been increasing So-called compression zones in the area of the exit rollers of the drafting system (DE 882 066) or after the drafting system (EP 0 635 590 A2 or 197 08 410 A1) arranged. These compression zones ensure that the fibers of the stretched Fuse on the smallest width in the nip of the delivery rollers (rollers, which feed the fuse into the spinning zone). It forms a very small spinning triangle. The danger of thread breakage becomes so at this point significantly reduced.

Die Aufgabe der vorliegenden Erfindung besteht darin, ein Spinnverfahren mit Spinnkopf und unterdrücktem Fadenballon vorzuschlagen, das es gestattet, sehr feine und glatte Fäden mit hoher Zuverlässigkeit bei hohen Spindeldrehzahlen und mit automatisiertem Spulenwechsel zu erzeugen.The object of the present invention is to propose a spinning process with a spinning head and suppressed thread balloon, which allows very fine and smooth threads to be produced with high reliability at high spindle speeds and with automated spool change.

Aufgabe der Erfindung ist es auch, eine Vorrichtung zur zuverlässigen Durchführung des Verfahrens vorzuschlagen, die bei geringstem konstruktiven Aufwand auch die Phasen zwischen dem normalen Spinnprozeß und dem Spulenwechsel in optimaler Weise ausführen kann.The object of the invention is also a device for reliable implementation propose the process with the least design effort also the phases between the normal spinning process and the spool change can perform in an optimal way.

Erfindungsgemäß wird diese Aufgabe durch die Verfahrensmerkmale nach Anspruch 1 gelöst.According to the invention, this object is achieved by the method features Claim 1 solved.

Die Kombination des ballonlosen Spinnens mit dem Verdichtungsspinnen führt zu überraschenden, vom Fachmann nicht erwarteten, Ergebnissen. Beim Spinnen ohne Fadenballon wird die hohe Drehung im Faden insbesondere in den Bereich zwischen dem Fadenführer über dem Spinnkopf und dem Klemmspalt der Liefer-walzen verlagert. Durch das kleine Spinndreieck, das beim Verdichtungsspinnen entsteht, werden alle Fasern fast parallel ausgerichtet zum weiterführenden Faden unmittelbar hinter dem Klemmspalt des Lieferwalzenpaares in den Spinnprozeß einbezogen. Sie sind sämtlich an der Sicherung der Stabilität des Fadens beteiligt. Der so entstehende Faden ist sehr glatt. Die bisher übliche Haarigkeit derartiger Fäden ist fast vollständig verschwunden. Die Zahl der Fadenbrüche am Ausgang der Lieferwalze ist praktisch Null.The combination of balloonless spinning with compression spinning leads to surprising results not expected by a person skilled in the art. When spinning Without a thread balloon, the high twist in the thread is particularly in the area between the thread guide above the spinning head and the nip of the delivery rollers relocated. Through the small spinning triangle that is used in compression spinning arises, all fibers are aligned almost parallel to the further one Thread directly behind the nip of the pair of delivery rollers in the spinning process included. They are all to ensure the stability of the thread involved. The resulting thread is very smooth. The usual hairiness such threads has almost completely disappeared. The number of thread breaks at the exit of the delivery roller is practically zero.

Es lassen sich mit der Kombination der Verfahrensschritte nach Anspruch 1 auch sehr dünne Fäden problemlos in hoher Qualität verspinnen.It can also be combined with the method steps according to claim 1 Spin very thin threads in high quality without any problems.

Mit der Art und Weise der Gestaltung des Wechsels des Spinnverfahrens vor und nach einem Anhaltevorgang zum Zwecke des Spulenwechsels - nach Anspruch 2 - kann man die optimalen Bedingungen beim Spinnen mit reduziertem Fadenballon auch beim Verfahrensübergang und beim Spinnen mit Fadenballon ohne zusätzliche Hilfsmittel, wie gesteuerte Ballonbegrenzungsringe, gewährleisten.With the way of designing the change of spinning process before and after a stopping process for the purpose of changing the bobbin - after Claim 2 - you can use the optimal conditions when spinning with reduced Thread balloon also during the process transition and when spinning with a thread balloon without additional aids, such as controlled balloon limiting rings, guarantee.

Die Parameter nach Anspruch 3 tragen zur weiteren Optimierung dieses Prozesses beim Anhaltevorgang vor einem Spulenwechsel bei.The parameters according to claim 3 contribute to the further optimization of this process when stopping before changing bobbins.

Der Anspruch 4 definiert die Detaills der Verfahrensschritte beim Wiederanfahren der Spinnmaschine nach einem Spulenwechsel.Claim 4 defines the details of the process steps when restarting the spinning machine after changing the bobbin.

Anspruch 5 empfiehlt die definierten Verfahrensschritte auch bei einem Anhalteund Anfahrprogramm, bei dem kein Spulenwechsel vorgesehen ist.Claim 5 recommends the defined procedural steps for a stopping and Start-up program in which no bobbin change is provided.

Die Vorrichtung nach Anspruch 6 gestattet die optimale Ausführung des Verfahrens nach Anspruch 1 und gewährleistet außerdem eine hohe Zuverlässigkeit des Verdichtungsprozesses unter den Bedingungen des ballonreduzierten Spinnens. The device according to claim 6 allows the optimal execution of the method according to claim 1 and also ensures high reliability the compression process under the conditions of balloon-reduced spinning.

Die Ausgestaltung des Fadenführers nach Anspruch 7, mit einer zum Zwecke des Verfahrenswechsels ausgestalteten, vertikalen Beweglichkeit relativ zum Spinnkopf und der Schwenkfähigkeit aus dem Wechselbereich der Spulen ermöglicht es, denselben in der Arbeitsposition sehr präzise und im geringen Abstand zum Spinnkopf anzuordnen und beim Spulenwechsel in einer nicht störenden Position zu halten.The design of the thread guide according to claim 7, with one for the purpose of the change of procedure designed, vertical mobility relative to Spinning head and the swiveling ability from the changing area of the spools allows it, the same in the working position very precisely and in a small amount Distance to the spinning head and not when changing bobbins hold disturbing position.

Die exakte Einstellung des Abstandes zwischen Fadenführer und Spinnkopf ist die Vorraussetzung für den Einsatz von Spinnköpfen mit sehr kleinem Querschnitt. Die Hülsen können über diese auch relativ niedrigen und schmalen Spinnköpfe bewegt werden, ohne daß man letztere für die Ausführung des Spulenwechsels abnehmen muß. Der konstruktive Aufwand wird niedrig gehalten. Die notwendige Zeit für den Spulenwechsel wird reduziert.The exact setting of the distance between the thread guide and the spinning head is the prerequisite for the use of spinning heads with a very small cross-section. The sleeves can also be relatively low and narrow Spinning heads are moved without the latter for the execution of the Coil change must decrease. The design effort is kept low. The time required for changing the bobbin is reduced.

Mit der Ausführung nach Anspruch 8 kann man weitgehend auf - an Spinnmaschinen der üblichen Bauweise - vorhandene Vorrichtungen zum Führen und Schwenken des Fadenführers zurückgreifen. Mit dem unabhängig vom zyklischen Spinnvorgang steuerbaren Hubantrieb kann man zu den gewünschten Zeitpunkten eine den Bedingungen für den Verfahrenswechsel angepaßte, "weiche" Bewegung ausführen. With the embodiment according to claim 8 you can largely on - on spinning machines the usual design - existing devices for guiding and Swing the thread guide back. With that regardless of the cyclical Spinning controllable lifting drive can be used to get the desired Points in time adapted to the conditions for the change of procedure, Carry out "soft" movement.

Die Erfindung soll nachstehend an einem Ausführungsbeispiel näher erläutert werden. In den dazugehörigen Zeichnungen zeigen:

Fig. 1
einen vereinfachten Querschnitt durch eine Spinnzone einer Ringspinnmaschine,
Fig. 2
eine Ansicht auf die Verdichtungszone im Bereich der Lieferwalze eines Streckwerkes in einer Ansicht entlang der Linie II-II in Fig. 1,
Fig. 3 - 7
schematische Darstellungen der am Spinnvorgang beteiligten Arbeitselemente in charakteristischen Arbeitspositionen vor und nach dem Spulenwechsel.
The invention will be explained in more detail below using an exemplary embodiment. In the accompanying drawings:
Fig. 1
a simplified cross section through a spinning zone of a ring spinning machine,
Fig. 2
2 shows a view of the compression zone in the area of the delivery roller of a drafting system in a view along the line II-II in FIG. 1,
3 - 7
schematic representations of the work elements involved in the spinning process in characteristic working positions before and after the spool change.

Die Ringspinnmaschine besitzt in der üblichen Weise eine große Zahl von Spindeln 1. Auf diese Spindeln 1 sind oben sog. Spindelaufsätze 2 aufgesteckt. Im gewählten Beispiel ist es ein sog. Spinnfinger. Möglich ist es auch, an seiner Stelle eine entsprechende Spinnkrone vorzusehen (vergl. z. B. DE 26 53 697 C2). Diese Spindelaufsätze 2 sind in eine entsprechende Bohrung der Spindel 1 unter Vorspannung eingesetzt. Ein Wechsel dieser Spindelaufsätze 2 erfolgt nur zum Zweck der Wartung. Die Querschnitte dieser Spindelaufsätze 2 sind so gestaltet, daß die Hülse 12 bzw. die Spule 13 über dieselben hinweg nach oben herausgehoben werden kann.
Parallel zur Achse der Spindeln 1 ist die Ringbank 4 im üblichen Sinn heb- und senkbar angeordnet. Die Ringbank 4 trägt für jede Spindel 1 einen Spinnring 41, auf dem der Ringläufer 42 gleitend geführt ist. Der Ringläufer 42 legt den im Ballon 75 zugeführten Faden auf der Oberfläche der Spule 13 ab.
Unmittelbar oberhalb des Spindelaufsatzes 2 ist während des Hauptspinnens der Fadenführer 3 angeordnet. Dieser Fadenführer 3 ist an einem Schwenkarm 31 befestigt, der mit der Welle 32 fest verbunden ist. Die Welle 32 wird an einem Hubschlitten 33 schwenkbar geführt. Dem Hubschlitten 33 ist eine gestellfeste Schlittenführung 331 zugeordnet. Diese Schlittenführung 331 ist parallel zur Achse der Spindeln 1 ausgerichtet.
Der Hubschlitten 33 wird durch Spindeln 341 vertikal bewegbar angetrieben. Die Drehung der Gewindespindel 341 erfolgt durch den Motor 34, der sein Steuerprogramm von einer zentralen Maschinensteuerung erhält. Dieser Motor 34 ist geeignet, den Hubschlitten 33 mit dem Fadenführer 3 aus der Position 3 um die Hubgröße oder den Abstand 35 exakt in die Position 3' und zurück zu bewegen.The ring spinning machine has a large number of spindles 1 in the usual way. So-called spindle attachments 2 are attached to these spindles 1 at the top. In the example chosen, it is a so-called spinning finger. It is also possible to provide a corresponding spinning crown in its place (see, for example, DE 26 53 697 C2). These spindle attachments 2 are inserted into a corresponding bore of the spindle 1 under prestress. These spindle attachments 2 are only changed for the purpose of maintenance. The cross sections of these spindle attachments 2 are designed so that the sleeve 12 or the coil 13 can be lifted out above them.
Parallel to the axis of the spindles 1, the ring bench 4 is arranged in the usual sense to be raised and lowered. The ring bank 4 carries for each spindle 1 a spinning ring 41 on which the ring traveler 42 is guided in a sliding manner. The ring traveler 42 deposits the thread fed into the balloon 75 on the surface of the bobbin 13.
The thread guide 3 is arranged directly above the spindle attachment 2 during main spinning. This thread guide 3 is attached to a swivel arm 31 which is fixedly connected to the shaft 32. The shaft 32 is pivotally guided on a lifting slide 33. A slide guide 331 fixed to the frame is assigned to the lifting slide 33. This slide guide 331 is aligned parallel to the axis of the spindles 1.
The lifting slide 33 is driven in a vertically movable manner by spindles 341. The spindle 341 is rotated by the motor 34, which receives its control program from a central machine control. This motor 34 is suitable for moving the lifting carriage 33 with the thread guide 3 from the position 3 exactly by the stroke size or the distance 35 into the position 3 'and back.

Das Streckwerk 5 der Ringspinnmaschine ist im vorliegenden Fall mit einer Verdichtungsanordnung versehen. Diese Verdichtungsanordnung ist dem Ausgangswalzenpaar 51 des Streckwerkes 5 unmittelbar nachgeordnet. Ein entlang einer mittleren Linie perforiertes Riemchen 61 umgreift einen Saugschuh 62 und die untere Lieferwalze 521.
Die untere Lieferwalze 521, die das Riemchen 61 von innen stützt, erhält ihren Antrieb von einer separaten Antriebswalze 53, die sich in der Regel über die gesamte Maschinenlänge erstreckt. Die obere Lieferwalze 522 liegt kraftschlüssig auf dem perforierten Riemchen auf und bildet gemeinsam mit diesem Riemchen den Klemmspalt 523.
Die Arbeitsweise dieser Verdichtungsanordnung ist in einer älteren, nicht vorveröffentlichten Patentanmeldung DE 197 08 410.9 ausführlich beschrieben. Aus diesem Grund wird die Wirkungsweise dieser Vorrichtung an dieser Stelle nicht weiter erläutert. Erwähnenswert ist lediglich, daß der Saugschuh 62 über ein Saugrohr 63 mit einem zentralen Saugkanal 64 verbunden ist. Der Druck in diesem System (62, 63, 64) ist unabhängig von dem Unterdruck gestaltbar, der im Saugkanal 55 erzeugt wird und der für das Reinigen bestimmter Zonen im Bereich der Spinnmaschine (z. B. Saugrohr 54) eingesetzt wird.The drafting unit 5 of the ring spinning machine is provided with a compression arrangement in the present case. This compacting arrangement is immediately downstream of the pair of output rollers 51 of the drafting unit 5. A strap 61 perforated along a central line encompasses a suction shoe 62 and the lower delivery roller 521.
The lower delivery roller 521, which supports the apron 61 from the inside, receives its drive from a separate drive roller 53, which generally extends over the entire length of the machine. The upper delivery roller 522 lies non-positively on the perforated strap and, together with this strap, forms the clamping gap 523.
The operation of this compression arrangement is described in detail in an older, not previously published patent application DE 197 08 410.9. For this reason, the mode of operation of this device is not further explained at this point. It is only worth mentioning that the suction shoe 62 is connected to a central suction channel 64 via a suction pipe 63. The pressure in this system (62, 63, 64) can be designed independently of the negative pressure which is generated in the suction channel 55 and which is used for cleaning certain zones in the area of the spinning machine (e.g. suction tube 54).

Während des Hauptspinnens werden die dargestellten Arbeitselemente in Positionen gehalten, die in Fig. 3 dargestellt sind. Die fertig verstreckte Lunte 71 wird durch den Klemmspalt 511 des Ausgangswalzenpaares 51 in die Verdichtungszone gefördert (Fig. 2). Durch den Saugluftstrom des Saugschuhes 62 werden die einzelnen Fasern der Lunte über den Löchern der Perforation des Riemchens 61 als gestreckte und verdichtete Lunte 72 gesammelt und fixiert. Diese so verdichtete Lunte 72 gelangt in dieser Form in den Klemmspalt 523 der Lieferwalzen 521, 522.
Die durch die Wirkungsweise des Spindelaufsatzes 2 in Verbindung mit dem Fadenführer 3 in den Faden aufgebrachten Windungen erreichen über den Fadenabschnitt 73 auf kurzem Weg auch den Klemmspalt 523.
Die Fasern der verdichteten Lunte 72 werden unmittelbar am Klemmspalt 523 - nahezu ohne das gefürchtete Spinndreieck - so verdreht, daß alle Fasern fest aneinander gehalten werden.
Der Faden ist praktisch am Ausgang des Klemmspaltes 523 nahezu vollständig fertig und hat die vorgegebene, mindestens aber die dort notwendige hohe Festigkeit.
Vom Spindelaufsatz 2 abwärts wird der Faden - das Fadenstück 74 - in mindestens einer Windung um den Spindelaufsatz 2, um das Oberteil der Spindel 1 und ggf. um das Oberteil der Hülse 12 herumgeführt. Relativ nahe an der Bewegungsebene des Ringläufers 42 verläßt dieses Fadenstück 74 die Oberfläche der Hülse 12 bzw. der Spindel 1 und bildet einen kleinen Fadenballon 75 aus.
Dieser relativ kleine Fadenballon 75 unterliegt nur einem geringen Luftwiderstand und einer geringen Fliehkraft. Dementsprechend niedrig ist dort und damit auch im Fadenabschnitt 73 die Fadenspannung.
Diese optimalen Spinnbedingungen werden während des normalen Spinnvorganges (hier als Hauptspinnen bezeichnet) regelmäßig gewährleistet. Die Belastung des Fadens ist gering. Es ensteht ein Faden, der eine hohe Gleichmäßigkeit und eine hohe Festigkeit hat.
Die Haarigkeit des Fadens ist, insbesondere durch die Anwendung der Verdichtungsanordnung, sehr gering. Der Spindelaufsatz 2, hier ausgebildet als Spinnfinger, ist praktisch nicht mehr in der Lage, aus dem festen Faserverbund des Fadens Fasern herauszustreichen, die dann die Qualität des Fadens negativ beeinflussen.
Ist der Aufbau der Spulen 13 abgeschlossen, ist es notwendig, die Ringbank 4 schnell nach unten abzusenken und einige Windungen des Fadens auf dem Unterwindebereich 11 der Spindel 1 abzulegen.
Damit in dieser Phase der vom Spinnkopf 2 erfaßte Faden nicht über die gesamte Länge über die Spule 13 gezogen werden muß, werden im Sinne der Erfindung folgende Arbeitsschritte ausgeführt:
In einem ersten Schritt wird die Drehzahl der Spindel 1 deutlich - etwa auf einen Wert zwischen 2.000 und 6.000 U/min - reduziert. Ist diese niedrige Spindeldrehzahl erreicht, wird durch einen entsprechenden Steuerbefehl an den Motor 34 der Fadenführer 3 parallel zur Achse der Spindel 1 um etwa 30 bis 50 mm nach oben bewegt.
Der durch die Lieferwalzen 521 und 522 gleichzeitig gelieferte Faden bildet dabei sofort unterhalb des angehobenen Fadenführers 3' einen Ballon aus, der sich aus den Vorsprüngen des Spindelaufsatzes 2 heraushebt.
Durch die Wirkung des Ringläufers 42 werden die kurzzeitig noch um den Spindelaufsatz 2 und die Hülse 12 vorhandenen Windungen des Fadenabschnittes 74 auf die Spule 13 aufgewunden. Die Spinnmaschine arbeitet jetzt nach dem üblichen Verfahren des Spinnens mit Fadenballon 75' (Fig. 4).
Hat sich der Fadenballon 75' ordentlich ausgebildet, kann sich die Ringbank 4 in üblicher Weise in die Unterwindeposition (Fig. 5) bewegen. Dabei laufen alle Vorgänge so ab, wie es an Spinnmaschinen, die mit Fadenballon arbeiten, üblich ist. Die oben bereits erwähnte, reduzierte Spindeldrehzahl soll dabei so gewählt werden, daß der Durchmesser des entstehenden Fadenballons 75' bzw 75" möglichst kleiner ist als der seitliche Abstand zwischen zwei Ballontrennplatten 43, die zwischen einander benachbarten Spindeln 1 angeordnet sind.
Hat die Ringbank 4 die Unterwindeposition (Fig. 5) erreicht, wird der Fadenführer 3 nach oben weggeschwenkt. Der Faden 76 ist bei stehender Spinnmaschine zwischen dem Fadenführer 3 und dem Ringläufer 42 so gespannt, daß er das Wechseln der Spule 13 gegen eine neue Hülse 12 nicht behindert.
Ist der Wechselvorgang abgeschlossen, wird der Fadenführer 3 zunächst in seine obere Arbeitsposition etwa im Abstand 35 oberhalb des Spindelaufsatzes 2 zurückgeschwenkt (Fig. 6).
Hat der Fadenführer 3' diese Position erreicht, beginnt die Spindel 1 mit relativ geringer Drehzahl ihre Bewegung. Der jetzt entstehende Fadenballon 75" ist in seinem Durchmesser auch so gering, daß er sich möglichst kollisionsfrei zwischen den Ballontrennplatten 43 bewegen kann.
in dieser Phase bewegt sich die Ringbank 4 in die Höhe der unteren Spulenkante und beginnt mit der Wicklung des Spulenansatzes 131. Zu diesem Zeitpunkt wird der Fadenführer 3 um den Abstand 35 wieder in Richtung des Spindelaufsatzes 2 bewegt. Sobald der aus dem Fadenführer 3 unten austretende Fadenabschnitt 75" vom Spindelaufsatz 2 erfaßt wird, beginnt wieder der Spinnprozeß mit dem unterdrückten Fadenballon 75 (Fig 7).
Der vom Spindelaufsatz 2 erfaßte Fadenabschnitt 74 windet sich jetzt ein- oder mehrmals um den Schaft des Spindelaufsatzes 2 und um den oberen Abschnitt der Hülse 12. Die relativ kleine Fadenspannung im Fadenballon 75 überträgt sich nur noch zu einem geringen Teil in den Fadenabschnitt 73. Der Spinnprozeß kann wieder mit optimalen Bedingungen fortgesetzt werden.During main spinning, the working elements shown are held in positions shown in FIG. 3. The fully drawn fuse 71 is conveyed through the nip 511 of the pair of output rollers 51 into the compression zone (FIG. 2). The suction fibers 62 collect and fix the individual fibers of the fuse over the holes in the perforation of the strap 61 as stretched and compressed fuse 72. In this form, the fuse 72 thus compressed arrives in the nip 523 of the delivery rollers 521, 522.
The turns made in the thread due to the mode of action of the spindle attachment 2 in connection with the thread guide 3 also reach the clamping gap 523 via the thread section 73.
The fibers of the compressed fuse 72 are twisted directly at the clamping gap 523 - almost without the dreaded spinning triangle - in such a way that all fibers are held firmly against one another.
The thread is practically completely finished at the exit of the clamping gap 523 and has the predetermined, or at least the high strength necessary there.
From the spindle attachment 2 downwards, the thread - the thread piece 74 - is guided in at least one turn around the spindle attachment 2, around the upper part of the spindle 1 and possibly around the upper part of the sleeve 12. Relatively close to the plane of movement of the ring traveler 42, this piece of thread 74 leaves the surface of the sleeve 12 or spindle 1 and forms a small thread balloon 75.
This relatively small thread balloon 75 is only subject to low air resistance and low centrifugal force. The thread tension is correspondingly low there and thus also in the thread section 73.
These optimal spinning conditions are regularly guaranteed during the normal spinning process (here referred to as main spinning). The load on the thread is low. A thread is created which has a high uniformity and a high strength.
The hairiness of the thread is very low, in particular due to the use of the compression arrangement. The spindle attachment 2, here designed as a spinning finger, is practically no longer able to brush fibers out of the solid fiber composite of the thread, which then negatively influence the quality of the thread.
Once the construction of the bobbins 13 has been completed, it is necessary to quickly lower the ring bank 4 downwards and to deposit a few turns of the thread on the underwinding area 11 of the spindle 1.
So that the thread gripped by the spinning head 2 does not have to be pulled over the entire length over the bobbin 13 in this phase, the following work steps are carried out in the sense of the invention:
In a first step, the speed of spindle 1 is significantly reduced - for example to a value between 2,000 and 6,000 rpm. If this low spindle speed is reached, the thread guide 3 is moved upwards by approximately 30 to 50 mm parallel to the axis of the spindle 1 by means of a corresponding control command to the motor 34.
The thread delivered simultaneously by the delivery rollers 521 and 522 thereby forms a balloon immediately below the raised thread guide 3 ', which lifts out of the projections of the spindle attachment 2.
Due to the action of the ring traveler 42, the turns of the thread section 74 which are still present for a short time around the spindle attachment 2 and the sleeve 12 are wound onto the bobbin 13. The spinning machine now works according to the usual method of spinning with thread balloon 75 '(FIG. 4).
Once the thread balloon 75 'has formed properly, the ring rail 4 can move into the downwind position (FIG. 5) in the usual way. All processes take place as is usual on spinning machines that work with thread balloons. The above-mentioned reduced spindle speed should be chosen so that the diameter of the thread balloon 75 'or 75 "that is created is as small as possible than the lateral distance between two balloon separating plates 43 which are arranged between adjacent spindles 1.
When the ring bench 4 has reached the underwind position (FIG. 5), the thread guide 3 is pivoted upwards. The thread 76 is tensioned between the thread guide 3 and the ring traveler 42 when the spinning machine is at a standstill so that it does not hinder the exchange of the bobbin 13 against a new sleeve 12.
When the changing process is complete, the thread guide 3 is first pivoted back into its upper working position approximately at a distance 35 above the spindle attachment 2 (FIG. 6).
When the thread guide 3 'has reached this position, the spindle 1 begins its movement at a relatively low speed. The resulting thread balloon 75 "is also so small in diameter that it can move between the balloon separating plates 43 with as little collision as possible.
in this phase, the ring rail 4 moves to the height of the lower bobbin edge and begins to wind the bobbin attachment 131. At this time, the thread guide 3 is moved again by the distance 35 in the direction of the bobbin attachment 2. As soon as the thread section 75 "emerging from the thread guide 3 below is gripped by the spindle attachment 2, the spinning process begins again with the suppressed thread balloon 75 (FIG. 7).
The thread section 74 gripped by the spindle attachment 2 now winds one or more times around the shaft of the spindle attachment 2 and around the upper section of the sleeve 12. The relatively small thread tension in the thread balloon 75 is only transferred to a small extent into the thread section 73 The spinning process can be continued with optimal conditions.

Das oben dargestellte Verfahren wurde hier in Verbindung mit dem Spulenwechsel beschrieben. Es ist empfehlenswert diesen Verfahrenswechsel - zwischen dem Spinnen mit Ballon und dem Spinnen mit unterdrücktem Fadenballon - bei reduzierter Geschwindigkeit auch dann vorzunehmen, wenn die Ringspinnmaschine aus irgendwelchen Gründen abgeschaltet werden soll. In diesem Fall wird zunächst die Spindeldrehzahl reduziert und der Fadenführer 3 angehoben. Die Ringbank 4 verbleibt in der aktuellen Position. Die Maschine wird zum Stillstand geführt.
Wird die Maschine wieder in Betrieb gesetzt, so drehen sich zunächst die Spindeln mit niedriger Drehzahl. Hat sich ein normaler, kleiner Fadenballon 75" ausgebildet, wird der Fadenführer 3 in seine Arbeitsposition abgesenkt und das Spinnen mit reduziertem Fadenballon 75 wird wieder fortgesetzt.
Der Vorteil des geschilderten Verfahrens besteht darin, daß in allen Phasen während des normalen Spinnvorganges und während des Aus- und Anlaufens der Maschine jeweils optimale Bedingungen für den zu spinnenden Faden wirksam sind.
Von ganz besonderer Bedeutung ist die Kombination des Spinnens mit reduziertem Fadenballon und dem Einsatz einer Verdichtungsanordnung für die verstreckte Lunte am Ausgang des Streckwerkes.
Wie bereits eingangs beschrieben, führt diese Kombination dazu, daß unmittelbar am Ausgang des Klemmspaltes 523 zwischen dem perforierten Riemchen 61 und der oberen Lieferwalze 522 alle Fasern bereits miteinander verdreht sind. Die Zahl der Fadenbrüche in diesem kritischen Bereich wird bei den üblichen Drehzahlen der Spindeln 1 reduziert.
Nimmt man die üblichen Fadenbruchzahlen als gegeben an, kann man die Drehzahl der Spindel während des Hauptspinnens in wesentlichen Größenordnungen erhöhen.
Ein weiterer entscheidender Vorteil dieser Kombination ergibt sich dadurch, daß die geringe Haarigkeit des Fadens, die unmittelbar nach dem Klemmspalt 523 erreicht wird, auch im Bereich des Spindelaufsatzes 2 und bei der Führung um die Spulenhülse 12 herum nicht mehr gefährdet wird. Versuche haben ergeben, daß diese, mit der genannten Kombination gesponnenen Fäden weniger haarig sind als die Fäden, die ohne Verdichtungsanordnung und ohne Spindelaufsatz 2 gesponnen wurden.
Das Anspinnen nach einem Spulenwechsel erfolgt bei dem Spinnverfahren mit Fadenballon 75" wesentlich zuverlässiger. Der zwischen dem Ringläufer 42 und dem Fadenführer 3 gespannte Faden wird im Fadenballon 75" im großen Abstand an der Zahnscheibe zwischen dem Unterwindebereich 11 und der unteren Kante der Hülse 12 vorbeigeführt. Würde man in dieser Phase mit unterdrücktem Fadenballon 75 arbeiten, wäre es nicht ausgeschlossen, daß der Faden durch diese Zahnscheibe getrennt wird. The procedure outlined above was described here in connection with changing the spool. It is advisable to carry out this process change - between spinning with a balloon and spinning with a suppressed thread balloon - at a reduced speed even if the ring spinning machine is to be switched off for any reason. In this case, the spindle speed is first reduced and the thread guide 3 is raised. The ring bench 4 remains in the current position. The machine is brought to a standstill.
When the machine is started up again, the spindles first turn at low speed. If a normal, small thread balloon 75 "has formed, the thread guide 3 is lowered into its working position and the spinning with a reduced thread balloon 75 is continued again.
The advantage of the described method is that optimal conditions for the thread to be spun are effective in all phases during the normal spinning process and while the machine is running and starting.
Of particular importance is the combination of spinning with a reduced thread balloon and the use of a compression arrangement for the drawn fuse at the exit of the drafting system.
As already described at the beginning, this combination leads to the fact that all fibers are already twisted with one another directly at the exit of the clamping gap 523 between the perforated strap 61 and the upper delivery roller 522. The number of thread breaks in this critical area is reduced at the usual speeds of the spindles 1.
Assuming the usual number of thread breaks as given, you can increase the speed of the spindle during main spinning in substantial orders of magnitude.
Another decisive advantage of this combination results from the fact that the low hairiness of the thread, which is achieved immediately after the clamping gap 523, is no longer endangered even in the area of the spindle attachment 2 and when guided around the bobbin tube 12. Tests have shown that these threads spun with the combination mentioned are less hairy than the threads spun without a compression arrangement and without a spindle attachment 2.
The spinning after a bobbin change takes place in the spinning process with thread balloon 75 "much more reliably. The thread stretched between ring traveler 42 and thread guide 3 is guided in thread balloon 75" at a large distance past the toothed disc between underwinding area 11 and the lower edge of sleeve 12 , If one were to work with the thread balloon 75 suppressed in this phase, it would not be impossible for the thread to be separated by this tooth lock washer.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Spindelspindle
1111
UnterwindebereichUnderwind area
1212
Hülseshell
1313
SpuleKitchen sink
131131
Spulenansatzcoils approach
22
SpindelaufsatzSpindle attachment
33
Fadenführerthread guides
31, 31'31, 31 '
Schwenkarmswivel arm
3232
Wellewave
3333
Hubschlittenlifting
331331
Schlittenführungcarriage guide
3434
Motorengine
341341
Gewindespindelscrew
3535
Hub; Abstandstroke; distance
44
Ringbankring rail
4141
Spinnringspinning ring
4242
Ringläuferring rotor
4343
BallontrennplatteBalloon separating plate
55
Streckwerkdrafting system
5151
AusgangswalzenpaarRoller pair
511511
Klemmspaltnip
521521
Lieferwalze, untenDelivery roller, below
522522
Lieferwalze, oben Delivery roller, top
523523
Klemmspaltnip
5353
Antriebswalzedrive roller
5454
Saugrohrsuction tube
5555
Saugkanalsuction
(6)(6)
VerdichtungsanordnungA compression device
6161
Riemchen, perforiertStrappy, perforated
6262
Saugschuhsuction shoe
6363
Saugrohrsuction tube
6464
Saugkanalsuction
7171
Lunte, verstrecktFuse, stretched
7272
Lunte, verstreckt und verdichtetFused, stretched and compacted
73, 73'73, 73 '
Fadenabschnitt (zwischen Fadenführer und Klemmspalt der Lieferwalze)Thread section (between thread guide and nip of the delivery roller)
7474
Fadenabschnitt (gewundener Gleitabschnitt)Thread section (winding sliding section)
75, 75', 75"75, 75 ', 75 "
Fadenballon (vor dem Läufer)Thread balloon (in front of the runner)
7676
Faden (bei Spulenwechsel)Thread (when changing bobbins)

Claims (8)

  1. A method for spinning with a suppressed yarn balloon,
    where the yarn twist is generated mainly between a spindle attachment and the gripping slit of delivery rollers at the output of the drawing frame,
    where the spindle attachment has one or several projections in its head area and with these projections extends on the prolonged axis of the spindle from bottom to a vertically movable thread guide, and
    where, in preparation of an automated change of bobbins, the vertically movable thread guide is shifted away from the spindle attachment upwards and the ring rail is subsequently lowered into the underwinding position,
    characterized in that the drawn slubbing, leaving the drawing mechanism, is compressed maintaining a parallel fibre topology, and is guided into the gripping slit of the delivery rollers, which are arranged at a distance downstream the drawing frame.
  2. A method according to Claim 1, characterized in that in preparation of a stopping process of the spinning machine
    the spindle speed is reduced more than 50%,
    the distance between the thread guide (3) and the spindle attachment (2) is significantly increased while the spindle is running at a reduced speed, and
    thus the spinning method with a suppressed yarn balloon (75) is changed into the spinning method with a speed-caused small yarn balloon (75'), and
    that in preparation of the restart of the spinning machine
    the increased distance of the thread guide (3) to the spindle attachment (2) is firstly maintained,
    at a low spindle speed when using the spinning method with yarn balloon (75"), the first windings are put on at a speed-caused small yarn balloon, and
    subsequently, the spinning is continued with a suppressed yam balloon (75) at normal spindle speed when the thread guide (3) has been lowered towards the spindle attachment (2).
  3. A method according to Claims 1 and 2, characterized in that the spindle speed is reduced to a value between 1,500 and 6,000 rpm prior to the change of bobbins,
    that, in a second step, the thread guide is lifted above the spinning head parallel to the spindle axis by approx. 20 to 50 mm until a yarn balloon is formed, and
    that, after the yarn balloon is formed, the ring rail is lowered into the underwinding area.
  4. A method according to Claim 1, characterized in that during the spinning start after a change of bobbin
    the spindles are first driven at a low speed, the thread guide remains positioned at the increased distance above the spinning head, and
    during spinning with a yarn balloon, the ring rail is lifted from the underwinding position to the thread-joining position in the lower part of the bobbin case, and
    that, after winding-up the first windings onto the bobbin,
    the thread guide is lowered to the working position immediately above the spinning head while almost simultaneously the speed of the spindles is increased to the normal operating speed.
  5. A method according to Claim 1, characterized in that even during an intended stopping and starting operation of the spinning machine, it will temporarily be changed over to the spinning method with a yarn balloon.
  6. A device for implementing the method according to Claim 1,
    at a spinning machine with spindles provided with one spindle attachment each,
    with a thread guide, which, during the main spinning operation, is positioned immediately above the spindle attachment and can be swivelled upwards and sideways in preparation of a change of bobbin,
    and with a drawing frame and delivery rollers, whose gripping slit is arranged at a distance above the thread guide and slightly offset to the spindle axis,
    characterized in that the delivery rollers (521, 522) are arranged at a distance behind the output roller pair (51) of the drawing frame (5), and
    that a principally known compression zone (perforated apron 61, suction shoe 62) for the drawn fibre slubbing (71) is assigned to the delivery rollers (521, 522) of the drawing frame (5).
  7. A device according to Claim 6, characterized in that the thread guide (3) can be shifted parallel to the axis of the spindle (1), to facilitate changing of the spinning method, and in addition, can be swivelled out of the bobbin changing area,
    that the spindle attachment (2) is in a fixed connection to the spindle (2), and
    that the largest cross section of the spindle attachment (2) is smaller than the smallest inner diameter of the case (12).
  8. A device according to Claims 6 or 7, characterized in that the thread guides (3) are jointly swivelled and supported in a bearing together with a horizontally oriented, vertically movable shaft (32),
    that the shaft (32) can be moved along guides (331) parallel to the axis of the spindle (1), and
    that an independently controllable lift drive (e.g. motor 34 with threaded spindle 341) is assigned to the arrangement specified last.
EP99924728A 1998-03-30 1999-03-26 Method and device for spinning with a suppressed yarn balloon Expired - Lifetime EP1071837B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19815518 1998-03-30
DE19815518A DE19815518C2 (en) 1998-03-30 1998-03-30 Method and device for spinning with a suppressed thread balloon
PCT/DE1999/000965 WO1999050488A1 (en) 1998-03-30 1999-03-26 Method and device for spinning with a suppressed yarn balloon

Publications (2)

Publication Number Publication Date
EP1071837A1 EP1071837A1 (en) 2001-01-31
EP1071837B1 true EP1071837B1 (en) 2002-09-04

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Application Number Title Priority Date Filing Date
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Country Status (6)

Country Link
US (1) US6332312B1 (en)
EP (1) EP1071837B1 (en)
JP (1) JP2002509997A (en)
CN (1) CN1267592C (en)
DE (2) DE19815518C2 (en)
WO (1) WO1999050488A1 (en)

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DE102015014382A1 (en) 2015-11-09 2017-05-11 Saurer Germany Gmbh & Co. Kg Workstation of a double twisting or cabling machine
DE102015014383A1 (en) 2015-11-09 2017-05-11 Saurer Germany Gmbh & Co. Kg Method for operating a spindle of a double-twisting or cabling machine

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19815052B4 (en) * 1998-04-03 2005-12-15 Saurer Gmbh & Co. Kg Process for producing a yarn and spinning machine therefor
DE102005045449B3 (en) * 2005-09-22 2006-11-16 Saurer Gmbh & Co. Kg Hinged yarn guides for balloon on ring spinning machine are raised at end of bobbin build by linkage to ring rail lifting drum
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WO1999050488A1 (en) 1999-10-07
CN1295633A (en) 2001-05-16
JP2002509997A (en) 2002-04-02
EP1071837A1 (en) 2001-01-31
DE19815518C2 (en) 2003-06-18
DE19815518A1 (en) 1999-10-07
DE59902569D1 (en) 2002-10-10
CN1267592C (en) 2006-08-02

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