WO2007131747A1 - Production of core yarns - Google Patents

Production of core yarns Download PDF

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Publication number
WO2007131747A1
WO2007131747A1 PCT/EP2007/004246 EP2007004246W WO2007131747A1 WO 2007131747 A1 WO2007131747 A1 WO 2007131747A1 EP 2007004246 W EP2007004246 W EP 2007004246W WO 2007131747 A1 WO2007131747 A1 WO 2007131747A1
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WO
WIPO (PCT)
Prior art keywords
suction
fiber
stretched
drafting system
compression
Prior art date
Application number
PCT/EP2007/004246
Other languages
German (de)
French (fr)
Inventor
Hermann Güttler
Original Assignee
Oerlikon Textile Gmbh & Co. Kg
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Oerlikon Textile Gmbh & Co. Kg filed Critical Oerlikon Textile Gmbh & Co. Kg
Priority to EP07725166A priority Critical patent/EP2019876A1/en
Publication of WO2007131747A1 publication Critical patent/WO2007131747A1/en

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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
    • D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
    • D01H5/70—Constructional features of drafting elements
    • D01H5/74—Rollers or roller bearings
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
    • D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
    • D01H5/26—Drafting machines or arrangements without fallers or like pinned bars in which fibres are controlled by one or more endless aprons
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
    • D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
    • D01H5/70—Constructional features of drafting elements
    • D01H5/72—Fibre-condensing guides
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/22—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
    • D02G3/36—Cored or coated yarns or threads
    • D02G3/367—Cored or coated yarns or threads using a drawing frame
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2201/00—Cellulose-based fibres, e.g. vegetable fibres
    • D10B2201/01—Natural vegetable fibres
    • D10B2201/02—Cotton
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2211/00—Protein-based fibres, e.g. animal fibres
    • D10B2211/01—Natural animal fibres, e.g. keratin fibres
    • D10B2211/02—Wool

Definitions

  • the invention relates to a method for producing false twists from two fiber bands stretched next to one another in a drafting system, the stretched rovings of which are fed to a common ring spinning spindle after leaving the drafting arrangement and to a device for the pneumatic compression of the two stretched rags under the action of suction and a device for the production of false threads with a drafting system in which two fiber slivers stretch next to each other and, after leaving the drafting system, a common ring spinning spindle and with a surface promoting the stretched fiber lunches with two parallel perforation tracks, to which suction shoes loaded with suction are underlaid.
  • DE 101 52 746 A1 shows a device by means of which the suction flow to a suction shoe of a compression device can be temporarily interrupted. However, it is about the compression of only one fiber structure, not the compression of two fiber structures combined into a false twist, in which the compression of the two fiber structures can be controlled differently.
  • the object of the invention was to subject the two fiber slats to different densities in order to compress them to different extents in this way. It solves this task with the features mentioned in the characterizing part of the main claim.
  • the invention achieves the object in that it completely prevents or reduces or maintains the suction pull on only one of the two fiber slips or on both fiber slats, the action on the suction pull being temporary and in fact on both fiber slits simultaneously or staggered in time.
  • the compression effect on the fiber slits is varied, which leads to a different appearance of one or both fiber slits in the false thread produced.
  • the fiber slats can consist of fibers of different or even contrasting colors. They can consist of fibers of different materials, in particular those that have different bulk and react differently to compaction, such as cotton and wool. The fineness of the fiber slivers can be different, so that the effect of compression also leads to different results.
  • Compacting / not compacting / reducing compacting can also be controlled by a random number generator that can produce unpredictable effects.
  • the compression which differs in time and in the amount of its action, in conjunction with the largely free combination of materials in the two fiber slits offers almost unlimited variants of the false thread that can be produced.
  • the invention provides for separate suction chambers to be assigned to the two perforation traces of the compression device and for these to be connected to separate suction channels, in the at least one of which the suction draft can be changed.
  • the induced draft can be completely prevented, not prevented or throttled more or less in any intermediate position.
  • the suction channel can be connected to a suction source via an actuatable shut-off valve or an actuatable throttle valve.
  • actuatable shut-off valve or an actuatable throttle valve.
  • other devices known from pneumatics for influencing the induced draft can also be provided.
  • the suction can also be satisfied by a bypass that can be opened so that it does not act on a perforation track.
  • the drafting system 1, on which the invention is shown, has three roller pairs 2, 3 and 4 connected in series, each of which comprises the lower roller 5 and the upper roller twin 6.
  • the left rollers of the top roller twins have broken away here.
  • the middle pair of rollers 3 is equipped with delay straps 7.
  • a compression device 8 arranged downstream of the drafting device 1 comprises a further pair of rollers 9, each with a lower roller 5 and a top roller twin 6.
  • the lower roller of this compression device and a suction shoe 10 arranged in front of it are wrapped by a compression strap 11.
  • This compression strap has two perforation tracks 12 spaced holes. Air is sucked through the holes in these perforation tracks through the shoe 10, whereby the fibers lying on the compression strap 11 are sucked onto the narrow perforation tracks and thereby compressed.
  • the compacting device 8 can also be equipped with a rigid, rotatably driven compacting drum, which has two parallel perforation tracks on its circumference. A suction shoe separated by a partition in two chambers is then also arranged within this drum.
  • the invention can also be realized on compaction devices with other types of compaction organs, such as sieve straps running over suction shoes with suction slits.
  • the suction shoe 11 is separated in its interior by a partition 13 in two chambers 14.
  • the two perforation tracks 12 of the compression strap 11 each run through one of the chambers 14.
  • the chambers are connected via branch lines 15 and 16 to suction lines 17 and 18 which extend over a number of compression devices.
  • the suction can be reduced or completely shut off, so that the perforation track 12 in question is subjected to suction or not at all, and accordingly has no or only a reduced compression effect on one of the drawn and to be compressed fiber slivers 19.
  • the suction draft can be reduced by means of a blocking or throttle slide 20, which can be pushed partially or completely into the suction line 17 by means of a pushing device 21.
  • the pushing device can consist of a cylinder / piston unit 22 which can be reversed via a control slide 23.
  • the control slide has a zero position in which an reached position of the blocking or throttle slide 20 is maintained.
  • the suction draft can also be reduced by means of other devices which are common and which can be used here in a sensible manner.
  • the suction in a suction line can be reduced or even completely prevented by a bypass to be opened, through which the suction does not act on the perforation track 12.
  • the suction channel 18 can also be provided with a device. hen, which also allows the suction in this suction channel to be interrupted or throttled.
  • the suction train should be interrupted or rebuilt very quickly in order to achieve steep ramps and thus striking transitions between compressed and non-compressed sections of the fiber sliver.
  • a blocking or throttle slide 20 in each of the stub lines 15, 16.
  • the spur lines 15, 16 of a short section of spinning positions for example the spinning positions between two punches of the drafting system, to a branch suction channel and a blocking channel between the latter and the suction channel 17. or throttle slide.
  • the second suction channel 18 would be unnecessary.
  • the two fiber slivers are fed to a ring spinning device 24, in which they are rotated together in a conventional manner and wound onto a cop 27 by means of ring 25 and rotor 26.
  • control slide 23 can be supplied with control signals via a control line 28 by the machine control or by a random generator, by means of which the control slide is actuated to actuate the blocking or throttle slide 20.

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

Abstract

The invention relates to a method and a system for manufacturing core yarns, in which two fiber slivers (19) warped next to one another in a drawing frame (1) are fed to a common ring spinning system (24) after the warping process. With this method, after the warping process, the warped fiber slivers are subjected to pneumatic compacting in a compacting device (8) by being fed via a perforation track through which air is sucked into a suction shoe (10). In order to provide independent variation in the compacting processes to which the two fiber slivers (19) are subjected, and thereby create effects in the resulting core yarn, it is proposed to separate the suction shoe, using a partition (13), into two chambers (14) in which the suction force can be reduced or closed off using flow-control mechanisms.

Description

Herstellen von ScheinzwirnManufacture of false threads
Technisches GebietTechnical field
Die Erfindung betrifft ein Verfahren zum Herstellen von Scheinzwirn aus zwei in einem Streckwerk nebeneinander verstreckten Faserbändern, deren verstreckte Lunten nach Verlassen des Streckwerks einer gemeinsamen Ringspinnspindel zugeführt werden und mit einer Einrichtung zum pneumatischen Verdichten der beiden ver- streckten Lunten unter Einwirkung von Saugzug und eine Vorrichtung zum Herstellen von Scheinzwirn mit einem Streckwerk, in dem zwei Faserbänder nebeneinander verstreckt und nach Verlassen des Streckwerks einer gemeinsamen Ringspinnspindel zulaufen und mit einer die verstreckten Faserlunten fördernden Fläche mit zwei parallel laufenden Perforationsspuren, denen mit Saugzug beaufschlagte Saugschu- he unterlegt sind.The invention relates to a method for producing false twists from two fiber bands stretched next to one another in a drafting system, the stretched rovings of which are fed to a common ring spinning spindle after leaving the drafting arrangement and to a device for the pneumatic compression of the two stretched rags under the action of suction and a device for the production of false threads with a drafting system in which two fiber slivers stretch next to each other and, after leaving the drafting system, a common ring spinning spindle and with a surface promoting the stretched fiber lunches with two parallel perforation tracks, to which suction shoes loaded with suction are underlaid.
Stand der TechnikState of the art
Aus der DE 197 08 410 A1 ist bekannt, die beiden zu Scheinzwirn zusammen zu drehenden Faserlunten nach dem Verstrecken und vor dem Verdrehen einer Ver- dichtung zu unterwerfen. Dem Ausgang des Streckwerkes ist zu diesem Zweck eine Verdichtungsvorrichtung nachgeordnet, das ein Verdichtungsriemchen mit zwei gesonderten Perforationsspuren zum getrennten Verdichten der beiden Faserlunten aufweist. Beide Faserlunten werden gleicher Verdichtungswirkung unterworfen.From DE 197 08 410 A1 it is known to subject the two fiber slits to be twisted together into false threads after stretching and before twisting. For this purpose, a compression device is arranged downstream of the exit of the drafting device, which has a compression strap with two separate perforation tracks for separate compression of the two fiber slivers. Both fiber slivers are subjected to the same compression effect.
Eine ähnliche Ausführungsform ist in der DE 197 08 410 A1 offenbart.A similar embodiment is disclosed in DE 197 08 410 A1.
Die DE 101 52 746 A1 zeigt eine Vorrichtung, mittels deren der Saugstrom zu einem Saugschuh einer Verdichtungsvorrichtung zeitweise unterbrochen werden kann. Es handelt sich aber um die Verdichtung nur eines Faserverbandes, nicht um die Ver- dichtung zweier, zu einem Scheinzwirn vereinigter Faserverbände, bei der die Verdichtung der beiden Faserverbände unterschiedlich gesteuert werden kann. Allgemeine Beschreibung der ErfindungDE 101 52 746 A1 shows a device by means of which the suction flow to a suction shoe of a compression device can be temporarily interrupted. However, it is about the compression of only one fiber structure, not the compression of two fiber structures combined into a false twist, in which the compression of the two fiber structures can be controlled differently. General description of the invention
Der Erfindung hatte sich die Aufgabe gestellt, die beiden Faserlunten unterschiedlicher Verdichtung zu unterziehen, um sie auf diese Weise unterschiedlich stark zu verdichten. Sie löst diese Aufgabe mit den im Kennzeichen des Hauptanspruches genannten Merkmalen.The object of the invention was to subject the two fiber slats to different densities in order to compress them to different extents in this way. It solves this task with the features mentioned in the characterizing part of the main claim.
Verfahrensmäßig löst die Erfindung die Aufgabe dadurch, dass sie den Saugzug ganz unterbindet oder vermindert oder beibehält und zwar auf nur eine der beiden Faserlunten oder auf beide Faserlunten, wobei die Einwirkung auf den Saugzuges zeitweise erfolgt und zwar auf beide Faserlunten gleichzeitig oder zeitlich gestaffelt. Dadurch wird die Verdichtungswirkung auf die Faserlunten variiert, was zu unterschiedlichem Erscheinungsbild der einen oder beider Faserlunten im erzeugten Scheinzwirn führt.In terms of method, the invention achieves the object in that it completely prevents or reduces or maintains the suction pull on only one of the two fiber slips or on both fiber slats, the action on the suction pull being temporary and in fact on both fiber slits simultaneously or staggered in time. As a result, the compression effect on the fiber slits is varied, which leads to a different appearance of one or both fiber slits in the false thread produced.
Besonders ausdruckvoll wird unterschiedliche Verdichtung in den beiden Faserlunten dann, wenn diese aus unterschiedlichen Materialien bestehen.Different densities in the two fiber slats become particularly expressive if they are made of different materials.
So können die Faserlunten aus Fasern unterschiedlicher oder gar kontrastierender Färbung bestehen. Sie können aus Fasern unterschiedlichen Materials bestehen, insbesondere solchen, die unterschiedliche Bauschigkeit aufweisen und unterschiedlich auf Verdichtung reagieren wie etwa Baumwolle und Wolle. Die Feinheit der Faserlunten kann unterschiedlich sein, so dass auch dadurch der Effekt des Verdich- tens zu unterschiedlichen Ergebnissen führt.The fiber slats can consist of fibers of different or even contrasting colors. They can consist of fibers of different materials, in particular those that have different bulk and react differently to compaction, such as cotton and wool. The fineness of the fiber slivers can be different, so that the effect of compression also leads to different results.
Ein besonders markanter Effekt wird erzielt, wenn die Verdichtung der beiden Komponenten des Scheinzwirns wechselweise verdichtet/nicht verdichtet werden. Aber auch zeitlich gestaffeltes Verdichten/nicht Verdichten kann zu interessanten Effekten führen.A particularly striking effect is achieved if the compression of the two components of the false twist are alternately compressed / not compressed. But staggering / not compressing over time can also lead to interesting effects.
Das Verdichten/nicht Verdichten/reduziert Verdichten kann auch durch einen Zufallsgenerator gesteuert werden, der unvorhersehbare Effekte erzielen kann. Die zeitlich und in Höhe ihres Einwirkens unterschiedliche Verdichtung bietet in Verbindung mit der weitgehend freien Materialkombination in den beiden Faserlunten zu nahezu unbegrenzten Varianten des erzeugbaren Scheinzwirns.Compacting / not compacting / reducing compacting can also be controlled by a random number generator that can produce unpredictable effects. The compression, which differs in time and in the amount of its action, in conjunction with the largely free combination of materials in the two fiber slits offers almost unlimited variants of the false thread that can be produced.
Vorrichtungsmäßig sieht die Erfindung vor, den beiden Perforationsspuren der Verdichtungsvorrichtung getrennte Saugkammem zuzuordnen und diese an gesonderte Saugkanäle anzuschließen, in deren mindestens einem der Saugzug veränderbar ist. Dabei kann der Saugzug ganz unterbunden, nicht unterbunden oder in einer beliebigen Zwischenstellung mehr oder minder gedrosselt werden.In terms of the device, the invention provides for separate suction chambers to be assigned to the two perforation traces of the compression device and for these to be connected to separate suction channels, in the at least one of which the suction draft can be changed. The induced draft can be completely prevented, not prevented or throttled more or less in any intermediate position.
Dazu kann der Saugkanal über ein betätigbares Absperrventil oder ein betätigbares Drosselventil an eine Saugquelle angeschlossen sein. Es können aber auch andere aus der Pneumatik bekannte Einrichtungen zum Beeinflussen des Saugzuges vorgesehen werden. So kann der Saugzug auch durch einen zu öffnenden Bypass befrie- digt werden, so dass er nicht an einer Perforationsspur wirksam wird.For this purpose, the suction channel can be connected to a suction source via an actuatable shut-off valve or an actuatable throttle valve. However, other devices known from pneumatics for influencing the induced draft can also be provided. In this way, the suction can also be satisfied by a bypass that can be opened so that it does not act on a perforation track.
Spezielle Beschreibung der ErfindungSpecific description of the invention
In der Zeichnung ist ein Ausführungsbeispiel der Erfindung schematisch in Draufsicht auf ein Streckwerk dargestellt.In the drawing, an embodiment of the invention is shown schematically in plan view of a drafting system.
Das Streckwerk 1 , an dem die Erfindung dargestellt ist, weist drei hintereinander geschaltete Walzenpaare 2, 3 und 4 auf, die jeweils Unterwalze 5 und Oberwalzenzwilling 6 umfassen. Die linken Walzen der Oberwalzenzwillingen sind hier weggebrochen. Das mittlere Walzenpaar 3 ist mit Verzugsriemchen 7 ausgestattet.The drafting system 1, on which the invention is shown, has three roller pairs 2, 3 and 4 connected in series, each of which comprises the lower roller 5 and the upper roller twin 6. The left rollers of the top roller twins have broken away here. The middle pair of rollers 3 is equipped with delay straps 7.
Eine dem Streckwerk 1 nachgeordnete Verdichtungsvorrichtung 8 umfasst in einer bevorzugten Ausführungsform ein weiteres Walzenpaar 9 jeweils mit Unterwalze 5 und Oberwalzenzwilling 6. Die Unterwalze dieser Verdichtungsvorrichtung und ein ihr vorgeordneter Saugschuh 10 sind von einem Verdichtungsriemchen 11 umschlun- gen. Dieses Verdichtungsriemchen weist zwei Perforationsspuren 12 mit beabstan- deten Löchern auf. Durch die Löcher dieser Perforationsspuren wird durch den Sauschuh 10 hindurch Luft angesaugt, wodurch die auf dem Verdichtungsriemchen 11 liegenden Fasern auf die schmalen Perforationsspuren gesaugt und dadurch verdichtet werden. Anstelle eines weiteren Walzenpaares kann die Verdichtungsvorrichtung 8 auch mit einer starren, drehbar angetriebenen Verdichtungstrommel ausgestattet sein, die auf ihrem Umfange zwei parallele Perforationsspuren aufweist. Innerhalb dieser Trom- mel ist dann ebenfalls ein durch eine Scheidewand in zwei Kammern getrennter Saugschuh angeordnet. Auch an Verdichtungsvorrichtungen mit andersartigen Verdichtungsorganen wie über Sauschuhe mit Saugschlitzen laufenden Siebriemchen ist die Erfindung zu verwirklichen.In a preferred embodiment, a compression device 8 arranged downstream of the drafting device 1 comprises a further pair of rollers 9, each with a lower roller 5 and a top roller twin 6. The lower roller of this compression device and a suction shoe 10 arranged in front of it are wrapped by a compression strap 11. This compression strap has two perforation tracks 12 spaced holes. Air is sucked through the holes in these perforation tracks through the shoe 10, whereby the fibers lying on the compression strap 11 are sucked onto the narrow perforation tracks and thereby compressed. Instead of a further pair of rollers, the compacting device 8 can also be equipped with a rigid, rotatably driven compacting drum, which has two parallel perforation tracks on its circumference. A suction shoe separated by a partition in two chambers is then also arranged within this drum. The invention can also be realized on compaction devices with other types of compaction organs, such as sieve straps running over suction shoes with suction slits.
Erfindungsgemäß ist der Saugschuh 11 in seinem Innern durch eine Scheidewand 13 in zwei Kammern 14 getrennt. Die beiden Perforationsspuren 12 des Verdich- tungsriemchens 11 laufen über je eine der Kammern 14. Die Kammern stehen über Stichleitungen 15 und 16 mit sich über mehrere Verdichtungsvorrichtungen erstreckenden Saugleitungen 17 und 18 in Verbindung.According to the invention, the suction shoe 11 is separated in its interior by a partition 13 in two chambers 14. The two perforation tracks 12 of the compression strap 11 each run through one of the chambers 14. The chambers are connected via branch lines 15 and 16 to suction lines 17 and 18 which extend over a number of compression devices.
In mindestens einer der Saugleitungen 17 ist der Saugzug verminderbar oder ganz absperrbar, so dass die betreffende Perforationsspur 12 nicht oder nur vermindert mit Saugzug beaufschlagt wird und demgemäss keine oder nur verminderte Verdichtungswirkung auf eines der verstreckten und zu verdichtenden Faserbänder 19 aus- übt.In at least one of the suction lines 17, the suction can be reduced or completely shut off, so that the perforation track 12 in question is subjected to suction or not at all, and accordingly has no or only a reduced compression effect on one of the drawn and to be compressed fiber slivers 19.
Das Vermindern des Saugzuges kann mittels eines Sperr- oder Drosselschiebers 20 erfolgen, der mittels einer Schubvorrichtung 21 zum Teil oder ganz in die Saugleitung 17 geschoben werden kann. Die Schubvorrichtung kann aus einer Zylinder/Kolben- Einheit 22 bestehen, die über einen Steuerschieber 23 umsteuerbar ist. Der Steuerschieber weist eine Nullstellung auf, in der eine erreichte Stellung des Sperr- oder Drosselschiebers 20 beibehalten wird.The suction draft can be reduced by means of a blocking or throttle slide 20, which can be pushed partially or completely into the suction line 17 by means of a pushing device 21. The pushing device can consist of a cylinder / piston unit 22 which can be reversed via a control slide 23. The control slide has a zero position in which an reached position of the blocking or throttle slide 20 is maintained.
Es versteht sich, dass das Vermindern des Saugzuges auch mittels anderer, geläufi- ger und hier sinnvoll einsetzbarer Vorrichtungen erfolgen kann. So kann beispielsweise der Saugzug in einer Saugleitung durch einen zu öffnenden Bypass vermindert oder auch ganz unterbunden werden, durch den der Saugzug nicht auf die Perforationsspur 12 wirkt. Ebenso kann auch der Saugkanal 18 mit einer Einrichtung verse- hen sein, die es erlaubt, auch den Saugzug in diesem Saugkanal zu unterbrechen oder zu drosseln.It is understood that the suction draft can also be reduced by means of other devices which are common and which can be used here in a sensible manner. For example, the suction in a suction line can be reduced or even completely prevented by a bypass to be opened, through which the suction does not act on the perforation track 12. Likewise, the suction channel 18 can also be provided with a device. hen, which also allows the suction in this suction channel to be interrupted or throttled.
Das Unterbrechen des Saugzuges oder sein Wieder-Aufbau sollte sehr rasch erfol- gen, um steile Rampen und damit markante Übergänge zwischen verdichteten und nicht verdichteten Abschnitten der Faserlunten zu erzielen. Um dies zu erreichen, wäre es vorteilhaft, einen Sperr- oder Drosselschieber 20 in jeder der Stichleitungen 15, 16 vorzusehen. Um diesen erheblichen baulichen Aufwand zu vermeiden, erscheint es vorteilhaft, die Stichleitungen 15, 16 eines kurzen Abschnittes von Spinn- stellen, etwa die Spinnstellen zwischen zwei Stanzen des Streckwerks, an einen Zweig-Saugkanal anzuschließen und zwischen diesem und dem Saugkanal 17 einen Sperr- oder Drosselschieber einzusetzen. In diesem Falle würde sich der zweite Saugkanal 18 erübrigen.The suction train should be interrupted or rebuilt very quickly in order to achieve steep ramps and thus striking transitions between compressed and non-compressed sections of the fiber sliver. In order to achieve this, it would be advantageous to provide a blocking or throttle slide 20 in each of the stub lines 15, 16. In order to avoid this considerable construction effort, it appears advantageous to connect the spur lines 15, 16 of a short section of spinning positions, for example the spinning positions between two punches of the drafting system, to a branch suction channel and a blocking channel between the latter and the suction channel 17. or throttle slide. In this case, the second suction channel 18 would be unnecessary.
Nach dem Verdichten werden die beiden Faserlunten einer Ringspinnvorrichtung 24 zugeführt, in der sie auf geläufige Weise gemeinsam gedreht und mittels Ring 25 und Läufer 26 auf einen Kops 27 aufgewunden werden.After compaction, the two fiber slivers are fed to a ring spinning device 24, in which they are rotated together in a conventional manner and wound onto a cop 27 by means of ring 25 and rotor 26.
Um den Saugzug zeitlich abzusperren oder zu vermindern, können dem Steuer- Schieber 23 über eine Steuerleitung 28 durch die Maschinensteuerung oder durch einen Zufallsgenerator Steuersignale zugeleitet werden, durch die der Steuerschieber zum Betätigen des Sperr- oder Drosselschiebers 20 beaufschlagt wird.In order to shut off or reduce the time of suction, the control slide 23 can be supplied with control signals via a control line 28 by the machine control or by a random generator, by means of which the control slide is actuated to actuate the blocking or throttle slide 20.
Der Gegenstand der vorliegenden Erfindung ergibt sich nicht nur aus dem Gegens- tand der einzelnen Patentansprüche, sondern auch aus der Kombination der einzelnen Patentansprüche untereinander.The object of the present invention results not only from the subject matter of the individual patent claims, but also from the combination of the individual patent claims with one another.
Alle in den Unterlagen offenbarten Angaben und Merkmale, insbesondere die in den Zeichnungen dargestellte räumliche Ausbildung, werden als erfindungswesentlich beansprucht, soweit sie einzeln oder in Kombination gegenüber dem Stand der Technik neu sind. BezugszahlenlisteAll of the information and features disclosed in the documents, in particular the spatial configuration shown in the drawings, are claimed to be essential to the invention insofar as they are new to the prior art, individually or in combination. List of reference numbers
1 Streckwerk1 drafting system
2, 3, 4 Walzenpaare des Streckwerks 5 Unterwalzen 6 Oberwalzenzwillinge2, 3, 4 pairs of rollers of the drafting system 5 bottom rollers 6 top roller twins
7 Verzugsriemchen7 delay slips
8 Verdichtungsvorrichtung8 compression device
9 Verdichtungswalzenpaar9 pair of compaction rollers
10 Saugschuh 11 Verdichtungsriemchen10 suction shoe 11 compression strap
12 Perforationsspuren12 traces of perforation
13 Scheidewand im Saugschuh 913 Partition in the suction shoe 9
14 Saugkammern14 suction chambers
15, 16 Stich-Saugleitungen 17, 18 Saugleitung15, 16 branch suction lines 17, 18 suction line
19 Faserlunten19 fiber matches
20 Drosselschieber20 throttle valve
21 Schubvorrichtung21 pusher
22 Zylinder/Kolben-Einheit 23 Steuerschieber22 cylinder / piston unit 23 spool
24 Ringspinnvorrichtung24 ring spinning device
25 Ring25 ring
26 Läufer26 runners
27 Kops 28 Steuerleitung 27 Kops 28 control line

Claims

Patentansprüche Claims
1. Verfahren zum Herstellen von Scheinzwirn aus zwei in einem Streckwerk nebeneinander verstreckten Faserbändern, deren verstreckte Lunten nach Verlassen des Streckwerks einer gemeinsamen Ringspinnspindel zugeführt werden und mit einer Einrichtung zum pneumatischen Verdichten der beiden verstreckten Lunten unter Einwirkung von Saugzug, dadurch gekennzeichnet, dass das Einwirken von Saugzug auf mindestens eine der beiden Lunten zeitweise unterbunden oder vermindert wird.1. A method for producing false twine from two fiber bands stretched next to each other in a drafting system, the stretched rovings of which are fed to a common ring spinning spindle after leaving the drafting system and with a device for the pneumatic compression of the two stretched rags under the action of suction, characterized in that the action is temporarily prevented or reduced by suction to at least one of the two fuses.
2. Verfahren nach Anspruch 1 , dadurch gekennzeichnet, dass die beiden Lunten aus Faserbändern unterschiedlicher Feinheit verstreckt werden.2. The method according to claim 1, characterized in that the two fuses are drawn from fiber tapes of different fineness.
3. Verfahren nach Anspruch 1 , dadurch gekennzeichnet, dass die beiden Lunten aus Faserbändern unterschiedlichen Fasermaterials bestehen.3. The method according to claim 1, characterized in that the two fuses consist of fiber tapes of different fiber material.
4. Verfahren nach Anspruch 1 , dadurch gekennzeichnet, dass die beiden Lunten aus Faserbändern unterschiedlicher Farbe bestehen.4. The method according to claim 1, characterized in that the two fuses consist of fiber ribbons of different colors.
5. Vorrichtung zum Herstellen von Scheinzwirn mit einem Streckwerk, in dem zwei Faserbänder nebeneinander verstreckt und nach Verlassen des Streckwerks einer gemeinsamen Ringspinnspindel zulaufen und mit einer die verstreckten Faserlunten durch mit Saugzug beaufschlagte Saugschuhe zu einer Verdichtungsspur gezogen werden, dadurch gekennzeichnet, dass der einer Spinnstelle zugeordnete Saug- schuh (10) durch eine Scheidewand (13) in zwei, auf jeweils eine der Perforationsspuren (12) wirkende Kammern (14) getrennt ist, die an getrennte Saugkanäle (17, 18) angeschlossen sind, in denen Saugzüge unterschiedlicher Intensität erzeugbar sind.5.Device for producing false twine with a drafting system in which two fiber slivers are stretched next to one another and, after leaving the drafting system, run towards a common ring spinning spindle and with which the stretched fiber lunches are drawn to a compression track by suction shoes acted on by suction, characterized in that the one spinning station assigned suction shoe (10) is separated by a partition (13) into two chambers (14), each acting on one of the perforation tracks (12), which are connected to separate suction channels (17, 18) in which suction trains of different intensities can be generated are.
6. Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, dass zumindest einer der Saugkanäle (17) über ein betätigbares Absperrventil (20) an eine Saugquelle angeschlossen ist. 6. The device according to claim 5, characterized in that at least one of the suction channels (17) via an actuatable shut-off valve (20) is connected to a suction source.
7. Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, dass zumindest einer der Saugkanäle (17) über eine betätigbares Drosselventil (20) an eine Saugquelle angeschlossen ist.7. The device according to claim 5, characterized in that at least one of the suction channels (17) via an actuatable throttle valve (20) is connected to a suction source.
8. Vorrichtung nach einem der Ansprüche 6 oder 7, dadurch gekennzeichnet, dass das Betätigen des Absperr- oder Drosselventils (20) durch die Steuerung der Maschine nach vorgegebenem Muster erfolgt.8. Device according to one of claims 6 or 7, characterized in that the actuation of the shut-off or throttle valve (20) is carried out by the control of the machine according to a predetermined pattern.
9. Vorrichtung nach einem der Ansprüche 6 oder 7, dadurch gekennzeichnet, dass das Betätigen des Absperr- oder Drosselventils (20) durch einen Zufallsgenerator erfolgt.9. Device according to one of claims 6 or 7, characterized in that the actuation of the shut-off or throttle valve (20) is carried out by a random generator.
10. Vorrichtung nach einem der Ansprüche 5 bis 7, dadurch gekennzeichnet, dass die die Faserlunten (19) fördernde Fläche als flexibles Riemchen (11) ausgebildet ist.10. Device according to one of claims 5 to 7, characterized in that the surface which promotes the fiber lunches (19) is designed as a flexible strap (11).
11. Vorrichtung nach einem der Ansprüche 5 bis 7, dadurch gekennzeichnet, dass die die Faserlunten (19) fördernde Fläche als Umfangsfläche einer rotierenden, starren Trommel ausgebildet ist.11. The device according to one of claims 5 to 7, characterized in that the fiber lunches (19) conveying surface is designed as a peripheral surface of a rotating, rigid drum.
12. Spinnmaschine mit einer Vorrichtung nach einem der Ansprüche 5 bis 11. 12. Spinning machine with a device according to one of claims 5 to 11.
PCT/EP2007/004246 2006-05-16 2007-05-12 Production of core yarns WO2007131747A1 (en)

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DE102006023097.3 2006-05-16
DE200610023097 DE102006023097A1 (en) 2006-05-16 2006-05-16 Making false twist

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CN108560095A (en) * 2018-04-27 2018-09-21 江南大学 The production technology of self-loopa multiple clips Revolving cup spinning colour mixture slub
CN108588931A (en) * 2018-04-27 2018-09-28 江南大学 Change the filament short-fiber composite yarn production method of blended when fineness of yarn online
CN108588932A (en) * 2018-04-27 2018-09-28 江南大学 Change the filament short-fiber composite yarn process units of blended when fineness of yarn online

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DE102017124659B3 (en) 2017-10-23 2019-02-07 Südwolle GmbH & Co. KG Method and device for producing a yarn
DE102019115218A1 (en) * 2019-06-05 2020-12-10 Maschinenfabrik Rieter Ag Compaction device for a drafting system of a spinning machine and spinning machine

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DE10145671A1 (en) * 2001-09-11 2003-03-27 Rieter Ag Maschf Spinning effect yarns with variable appearance along their length involves controlled variation of the effectiveness of the sliver compacting zone
DE10152746A1 (en) * 2001-10-25 2003-05-15 Zinser Textilmaschinen Gmbh Spinning a yarn from sliver with sliver compacting by suction involves intermittent interruption of compacting air stream

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DE19931253A1 (en) * 1999-07-07 2001-01-11 Fritz Stahlecker Spinning of effect yarn using a drafting system fitted with sliver condensing involves periodically varying the degree of condensing
DE10145671A1 (en) * 2001-09-11 2003-03-27 Rieter Ag Maschf Spinning effect yarns with variable appearance along their length involves controlled variation of the effectiveness of the sliver compacting zone
DE10152746A1 (en) * 2001-10-25 2003-05-15 Zinser Textilmaschinen Gmbh Spinning a yarn from sliver with sliver compacting by suction involves intermittent interruption of compacting air stream

Cited By (3)

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Publication number Priority date Publication date Assignee Title
CN108560095A (en) * 2018-04-27 2018-09-21 江南大学 The production technology of self-loopa multiple clips Revolving cup spinning colour mixture slub
CN108588931A (en) * 2018-04-27 2018-09-28 江南大学 Change the filament short-fiber composite yarn production method of blended when fineness of yarn online
CN108588932A (en) * 2018-04-27 2018-09-28 江南大学 Change the filament short-fiber composite yarn process units of blended when fineness of yarn online

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DE102006023097A1 (en) 2007-11-22
CN101437993A (en) 2009-05-20

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