EP1389640B1 - Method for running a ring-spinning machine and ring-spinning machine - Google Patents
Method for running a ring-spinning machine and ring-spinning machine Download PDFInfo
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- EP1389640B1 EP1389640B1 EP03014224A EP03014224A EP1389640B1 EP 1389640 B1 EP1389640 B1 EP 1389640B1 EP 03014224 A EP03014224 A EP 03014224A EP 03014224 A EP03014224 A EP 03014224A EP 1389640 B1 EP1389640 B1 EP 1389640B1
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- Prior art keywords
- ring
- hairiness
- suction
- spinning machine
- yarn
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H13/00—Other common constructional features, details or accessories
- D01H13/14—Warning or safety devices, e.g. automatic fault detectors, stop motions ; Monitoring the entanglement of slivers in drafting arrangements
- D01H13/22—Warning or safety devices, e.g. automatic fault detectors, stop motions ; Monitoring the entanglement of slivers in drafting arrangements responsive to presence of irregularities in running material
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- 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
Definitions
- the invention relates to a method for operating a ring spinning machine and a ring spinning machine whose drafting systems are equipped with pneumatic compression devices.
- the DE-A-41 39 067 describes a spinning machine with a Doppelriemchenstrecktechnik and a fiber bundling zone, in which the fiber structure is compacted by means of a suction opening in a top roller in the drafting system.
- the negative pressure at the suction opening is controllable to set a desired fiber compaction and thus the yarn quality.
- the EP-A-0 635 590 describes a method for bundling a finished in a double apron drafting sliver, which is summarized following the delay in a fiber bundling zone.
- the compaction takes place by means of suction air flow through a perforated surface in the fiber bundling zone.
- the compression and thus the yarn properties eg. As the hairiness can be influenced.
- the invention has for its object to operate a ring spinning machine so that the potential performance can be optimally used.
- This object is achieved in that a limit value for the hairiness of each yarn to be spun is specified and that the ring spinning machine is operated at this yarn-dependent limit of hairiness.
- the limit value suitable for a particular fiber material can be empirically determined in particular by the manufacturer of the ring spinning machine and then given to the users of the ring spinning machine.
- the hairiness of the yarn to be spun is adjusted to the limit. By means of a regulation, it is ensured that there are uniform conditions over the whole cop trip.
- the object is achieved in that means are provided for maintaining a given hairiness of the yarn to be spun.
- These means can be realized with a controller or with a control. They also include means for varying the compaction effect of the pneumatic compactor set by the controller or controller to achieve or maintain the limit of hairiness of the yarn to be spun.
- the drawings 1 and 2 show in schematic representation in each case a spinning station of a ring spinning machine, the drafting system is equipped with a pneumatic compression device whose compression effect is adjustable.
- the drawing 3 shows a module of a suction insert.
- a modern ring spinning machine has a plurality of spinning positions on both sides of the machine, for example on each machine side 500, of which one is shown in the drawings.
- Each of these spinning positions includes a drafting system 13 with a compression device, which is followed by a ring spinning device 14 with a ring 26 on which a rotor 27 is guided.
- the fiber material 11 to be spun is drawn off from a roving bobbin 10 and passes over a deflection bar or deflection roller 12 into the drafting system 13.
- the drafting system 13 has an input roller pair of a running in the machine longitudinal direction, driven lower cylinder 15 and a pressure roller 16. Further, it has a middle roller pair of a continuous machine longitudinal direction, driven lower cylinder 17 and a pressure roller 18. These form a Doppelriemchenaggregat with a Unterriemchen and Oberriemchen. This is followed by an output roller pair of a driven perforated roller 19 and a pressure roller 20.
- the perforated roller 19 is associated with a further pressure roller 24.
- the fiber structure which has been stretched when the pressure roller pair 19, 20 has been reached passes through a yarn guide 28 to the rotor 27, at which the fiber structure is deflected and guided to cop 30, which is not shown Spindle is arranged, which is driven in the circumferential direction.
- a suction insert 21 is arranged, which is connected to a vacuum source, such as a fan 22, connected.
- the suction insert 21 has a directed to the area between the two pressure rollers 20, 24 of the perforated roller 19 suction slot which extends straight in the transport direction of the fiber material 11 or obliquely thereto.
- Suction insert and suction slot each have a special effect on the compaction and thus on the hairiness.
- the edge region of the suction slot has shown, but also just those of the support webs (34, drawing 3), which determine the distance of the suction slit from the sliver.
- the height of these webs greatly affects the hairiness of the yarn, so will be considered in any advantageous embodiment of the machine described. So it is conceivable that the spinner for each yarn count own, particularly suitable suction inserts can be given to the hand, with which he can adjust the hairiness as needed, which can be considered a rule of thumb: the finer the yarn, the smaller the distance of the insert from Sliver, the lower the web height.
- the dimension will move from about 0 mm at Ne 100 to about 1 mm at Ne 10.
- suction inserts with webs of different heights are used on the same machine, the described effect can prevent the problem of the negative pressure dropping from the fan to the last spinning station occurring in today's large ring spinning machines with many spinning stations.
- the suction inserts are preferably, as before, made of a suitable plastic and can be replaced quickly in a yarn change.
- the perforated roller 19 is on the outside a cover 25, by which the pneumatic compression effect in the compression zone can be influenced.
- the yarn spun in this way has a hairiness that is significantly lower than the hairiness of a conventionally spun yarn.
- the invention therefore provides that the hairiness of the yarn to be spun is not reduced to the maximum possible lowest hairiness, but to a limit of the hairiness, which can be found by means of a compromise between different parameters. These parameters are the performance of the ring spinning machine (spindle speed), the improved substance utilization and the wear of ring 26 and / or rotor 27.
- a control 30 is provided, by means of which the cover 25 is adjusted so that the compression effect is varied so that the hairiness of the yarn to be spun is kept constant at the predetermined limit.
- drives 31 and 32 are provided, by means of which the cover 25 in the radial direction and in the circumferential direction relative to the perforated roller 19 is adjustable.
- a control 30 is provided, but with the here via a frequency converter 35, the fan 22 is controlled to vary in this way the negative pressure.
- the controller 30 obtains information about the hairiness by indirectly detecting the hairiness of the spun yarn. This indirect detection takes place in that the temperature of the ring 26 and / or the rotor 27 is detected.
- the temperature of the ring 26 and the rotor 27 is representative of the friction between the rotor 27 and ring 26 and thus indirectly also representative of the hairiness of the spun yarn, because the hairiness of the spun yarn is decisive for the friction.
- the temperature is detected by means of a temperature sensor 33, in particular an infrared sensor.
- means may be provided by means of which directly the hairiness of the spun yarn is detected. These means are then conveniently placed between the pressure roller 24 and the yarn guide 28.
- the actuators 31 and 32 which are adjusted by the controller 30, are then designed so that a group or possibly all covers the drafting of a machine side are adjusted simultaneously.
- the setting of the compression effect is not limited to the adjustment of a cover 25 here. At least the options described above are also suitable.
- German patent application 10145671.9 discloses further possibilities for adjusting the compaction effect and thus setting a value of hairiness. Of course, these possibilities may be used individually or in combination with one another in connection with the present invention.
- the illustrated compression device with the perforated roller 19 is to be understood only as an example of a pneumatic compression device. Of course, all other known pneumatic compression devices can also be used.
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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 zum Betreiben einer Ringspinnmaschine und eine Ringspinnmaschine, deren Streckwerke mit pneumatischen Verdichtungseinrichtungen ausgerüstet sind.The invention relates to a method for operating a ring spinning machine and a ring spinning machine whose drafting systems are equipped with pneumatic compression devices.
Mittels den Streckwerken zugeordneter pneumatischer Verdichtungseinrichtungen ist es möglich, die Fasersubstanz besser auszunutzen, d.h. mehr Fasern mittels der Spinndrehung in das Garn einzubinden. Damit wird die Haarigkeit eines derartigen Garnes, eines sogenannten Verdichtungsgarnes, gegenüber einem konventionell gesponnenen Garn deutlich reduziert. Da die geringe Haarigkeit des gesponnenen Garnes charakteristisch für die Wirkung von pneumatischen Verdichtungseinrichtungen ist, kann durch Überwachen der Haarigkeit des gesponnenen Garnes (
Es ist auch bekannt (
Die
Die
Der Erfindung liegt die Aufgabe zugrunde, eine Ringspinnmaschine so zu betreiben, dass die mögliche Leistung optimal genutzt werden kann.The invention has for its object to operate a ring spinning machine so that the potential performance can be optimally used.
Diese Aufgabe wird dadurch gelöst, dass ein Grenzwert für die Haarigkeit des jeweils zu erspinnenden Garns vorgegeben wird und dass die Ringspinnmaschine bei diesem garnabhängigen Grenzwert der Haarigkeit betrieben wird.This object is achieved in that a limit value for the hairiness of each yarn to be spun is specified and that the ring spinning machine is operated at this yarn-dependent limit of hairiness.
Mittels der Vorgabe eines Grenzwertes für die Haarigkeit des gesponnenen Garns ist es möglich, einen Kompromiss zwischen der Substanzausnutzung des Fasermaterials einerseits und dem Verschleiß an Läufer und / oder Ring andererseits so zu finden, dass die Ringspinnmaschine mit möglichst hoher Leistung betrieben werden kann. Der für ein bestimmtes Fasermaterial geeignete Grenzwert kann unter Berücksichtigung der genannten Parameter empirisch insbesondere beim Hersteller der Ringspinnmaschine ermittelt und dann den Nutzern der Ringspinnmaschine gegeben werden.By specifying a limit value for the hairiness of the spun yarn, it is possible to reach a compromise between the substance utilization of the fiber material on the one hand and the wear on runners and / or ring on the other hand to find that the ring spinning machine can be operated with the highest possible performance. Taking into account the mentioned parameters, the limit value suitable for a particular fiber material can be empirically determined in particular by the manufacturer of the ring spinning machine and then given to the users of the ring spinning machine.
In vorteilhafter Ausgestaltung der Erfindung wird vorgesehen, dass die Haarigkeit des zu spinnenden Garnes auf den Grenzwert eingeregelt wird. Mittels einer Regelung wird sichergestellt, dass über die gesamte Kopsreise gleichmäßige Bedingungen vorliegen.In an advantageous embodiment of the invention, it is provided that the hairiness of the yarn to be spun is adjusted to the limit. By means of a regulation, it is ensured that there are uniform conditions over the whole cop trip.
Bei einer Ringspinnmaschine wird die Aufgabe dadurch gelöst, dass Mittel zum Einhalten einer vorgegebenen Haarigkeit des zu erspinnenden Garns vorgesehen sind. Diese Mittel können mit einer Steuerung oder auch mit einer Regelung realisiert werden. Sie enthalten ferner Mittel zum Variieren der Verdichtungswirkung der pneumatischen Verdichtungseinrichtung, die von der Steuerung oder der Regelung zum Erzielen oder Einhalten des Grenzwertes der Haarigkeit des zu erspinnenden Garnes eingestellt werden.In a ring spinning machine, the object is achieved in that means are provided for maintaining a given hairiness of the yarn to be spun. These means can be realized with a controller or with a control. They also include means for varying the compaction effect of the pneumatic compactor set by the controller or controller to achieve or maintain the limit of hairiness of the yarn to be spun.
Weitere Merkmale und Vorteile der Erfindung ergeben sich aus der nachfolgenden Beschreibung der in den Zeichnungen dargestellten Ausführungsbeispiele, wobei die Zeichnungen natürlich lediglich Ausführungsbeispiele darstellen, die in keiner Weise einschränkend verstanden werden können.Further features and advantages of the invention will become apparent from the following description of the embodiments illustrated in the drawings, wherein the drawings, of course, represent only embodiments that can be understood in any way limiting.
Die Zeichnungen 1 und 2 zeigen in schematischer Darstellung jeweils eine Spinnstelle einer Ringspinnmaschine, deren Streckwerk mit einer pneumatischen Verdichtungseinrichtung ausgerüstet ist, deren Verdichtungswirkung einstellbar ist. Die Zeichnung 3 zeigt ein Modul eines Saugeinsatzes.The drawings 1 and 2 show in schematic representation in each case a spinning station of a ring spinning machine, the drafting system is equipped with a pneumatic compression device whose compression effect is adjustable. The drawing 3 shows a module of a suction insert.
Eine modere Ringspinnmaschine hat auf beiden Maschinenseiten eine Vielzahl von Spinnpositionen, beispielsweise auf jeder Maschinenseite 500, von welchen eine in den Zeichnungen dargestellt ist. Jede dieser Spinnpositionen enthält ein Streckwerk 13 mit einer Verdichtungseinrichtung, auf die eine Ringspinneinrichtung 14 mit einem Ring 26 folgt, auf welchem ein Läufer 27 geführt ist.A modern ring spinning machine has a plurality of spinning positions on both sides of the machine, for example on each machine side 500, of which one is shown in the drawings. Each of these spinning positions includes a
Das zu spinnende Fasermaterial 11 wird von einer Vorgarnspule 10 abgezogen und läuft über eine Umlenkstange oder Umlenkrolle 12 in das Streckwerk 13 ein. Das Streckwerk 13 besitzt ein Eingangswalzenpaar aus einem in Maschinenlängsrichtung durchlaufenden, angetriebenen Unterzylinder 15 und einer Druckwalze 16. Ferner besitzt es ein Mittelwalzenpaar aus einem in Maschinenlängsrichtung durchlaufenden, angetriebenen Unterzylinder 17 und einer Druckwalze 18. Diese bilden ein Doppelriemchenaggregat mit einem Unterriemchen und einem Oberriemchen. Anschließend folgt ein Ausgangswalzenpaar aus einer angetriebenen perforierten Walze 19 und einer Druckwalze 20. Der perforierten Walze 19 ist eine weitere Druckwalze 24 zugeordnet. Der mit Erreichen des Druckwalzenpaares 19, 20 fertig verstreckte Faserverband läuft nach Verlassen der Klemmlinie zwischen perforierter Walze 19 und Druckwalze 24 durch einen Fadenführer 28 hindurch zu dem Läufer 27, an welchem der Faserverband umgelenkt und zu Kops 30 geführt wird, der auf einer nicht dargestellten Spindel angeordnet ist, die in Umfangsrichtung angetrieben ist.The
Innerhalb der perforierten Walze 19 ist ein Saugeinsatz 21 angeordnet, der an eine Unterdruckquelle, beispielsweise ein Gebläse 22, angeschlossen ist. Der Saugeinsatz 21 besitzt einen auf den Bereich zwischen den beiden Druckwalzen 20, 24 der perforierten Walze 19 gerichteten Saugschlitz, der gerade in Transportrichtung des Fasermaterials 11 oder auch schräg dazu verläuft.Within the
Saugeinsatz und Saugschlitz haben jeweils eine besondere Wirkung auf die Verdichtung und damit auf die Haarigkeit. Zur besonderen Wirkung unterschiedlicher Schlitzformen und Saugeinsätze sei hiermit nochmals auf unsere früheren Anmeldungen, bspw.
Als besonders vorteilhaft in diesem Zusammenhang hat sich nicht nur eine Gestaltung des Randbereiches des Saugschlitzes gezeigt, sondern auch eine eben solche der Auflagestege (34, Zeichnung 3), die den Abstand des Saugschlitzes vom Faserband bestimmen. Die Höhe dieser Stege beeinflusst in grossem Masse die Haarigkeit des Garnes, wird also in jeder vorteilhaften Ausführung der beschriebenen Maschine berücksichtigt werden. So ist vorstellbar, dass dem Spinner für jede Garnfeinheit eigene, besonders geeignete Saugeinsätze an die Hand gegeben werden können, mit denen er nach Bedarf die Haarigkeit einstellen kann, wobei als Faustregel gelten kann: je feiner das Garn, desto geringer der Abstand des Einsatzes vom Faserband, desto geringer also die Steghöhe. Bevorzugterweise wird sich die Dimension etwa von 0 mm bei Ne 100 bis etwa zu einem mm bei Ne 10 bewegen. Setzt man auf derselben Maschine Saugeinsätze mit Stegen von unterschiedlicher Höhe ein, kann durch die beschriebene Wirkung dem bei den heute üblichen grossen Ringspinnmaschinen mit sehr vielen Spinnstellen auftauchenden Problem des vom Gebläse bis zur letzten Spinnstelle hin abfallenden Unterdruckes vorgebeugt werden. Die Saugeinsätze sind vorzugsweise, wie bisher, aus einem geeigneten Kunststoff gefertigt und können bei einem Garnwechsel rasch ausgewechselt werden.Be particularly advantageous in this context, not only a design of the edge region of the suction slot has shown, but also just those of the support webs (34, drawing 3), which determine the distance of the suction slit from the sliver. The height of these webs greatly affects the hairiness of the yarn, so will be considered in any advantageous embodiment of the machine described. So it is conceivable that the spinner for each yarn count own, particularly suitable suction inserts can be given to the hand, with which he can adjust the hairiness as needed, which can be considered a rule of thumb: the finer the yarn, the smaller the distance of the insert from Sliver, the lower the web height. Preferably, the dimension will move from about 0 mm at Ne 100 to about 1 mm at Ne 10. If suction inserts with webs of different heights are used on the same machine, the described effect can prevent the problem of the negative pressure dropping from the fan to the last spinning station occurring in today's large ring spinning machines with many spinning stations. The suction inserts are preferably, as before, made of a suitable plastic and can be replaced quickly in a yarn change.
In dem Bereich zwischen den beiden Druckwalzen 20, 24 und dem Saugschlitz 23, der sogenannten Verdichtungszone, liegt der perforierten Walze 19 außen eine Abdeckung 25 gegenüber, durch welche die pneumatische Verdichtungswirkung in der Verdichtungszone beeinflusst werden kann.In the area between the two
Mittels des pneumatischen Verdichtens wird eine bessere Substanzausnutzung des verarbeiteten Fasermaterials erhalten, da mehr Fasern aufgrund der Spinndrehung in das Garn eingebunden werden. Das auf diese Weise gesponnene Garn hat eine Haarigkeit, die deutlich gegenüber der Haarigkeit eines konventionell gesponnenen Garnes geringer ist. Die Praxis hat gezeigt, dass die verringerte Haarigkeit zu einem erhöhten Verschleiß von Läufer 27 und / oder Ring 26 führt, da offensichtlich eine verringerte Schmierung erhalten wird, wenn die Haarigkeit verringert wird. Die Erfindung sieht deshalb vor, dass die Haarigkeit des zu spinnenden Garns nicht auf die maximal mögliche geringste Haarigkeit reduziert wird, sondern auf einen Grenzwert der Haarigkeit, der mittels eines Kompromisses zwischen verschiedenen Parametern gefunden werden kann. Diese Parameter sind die Leistung der Ringspinnmaschine (Spindeldrehzahl), die verbesserte Substanzausnutzung und der Verschleiß von Ring 26 und / oder Läufer 27. Hierzu wird empirisch ermittelt, mit welchen Spindeldrehzahlen bei welchen verringerten Werten der Haarigkeit gearbeitet werden, ohne dass ein unzulässiger Verschleiß an Ring 26 und / oder Läufer 27 auftritt. Mit diesem von dem Fasermaterial abhängigen Grenzwert wird dann die Ringspinnmaschine betrieben. Bei dem dargestellten Ausführungsbeispiel 1 ist eine Regelung 30 vorgesehen, mittels der die Abdeckung 25 derart eingestellt wird, dass die Verdichtungswirkung so variiert wird, dass die Haarigkeit des zu spinnenden Garns konstant auf dem vorgegebenen Grenzwert gehalten wird. Für die Abdeckung 25 sind Verstellantriebe 31 und 32 vorgesehen, mittels derer die Abdeckung 25 in radialer Richtung und in Umfangsrichtung relativ zur perforierten Walze 19 verstellbar ist.By means of the pneumatic compacting a better substance utilization of the processed fiber material is obtained, since more fibers are incorporated into the yarn due to spin rotation. The yarn spun in this way has a hairiness that is significantly lower than the hairiness of a conventionally spun yarn. Practice has shown that the reduced hairiness leads to increased wear of
Auch bei dem Beispiel der Zeichnung 2 ist eine Regelung 30 vorgesehen, mit der hier jedoch über einen Frequenzumrichter 35 das Gebläse 22 geregelt wird, um auf diese Weise den Unterdruck zu variieren.Also in the example of the drawing 2 a
Es ist weiterhin möglich, die Haarigkeit über Variationen des Saugeinsatzes zu beeinflussen, sei es durch die bekannten Abwandlungen der Form des Saugschlitzes, sei es durch den Abstand des Einsatzes vom Faserband.It is also possible to influence the hairiness over variations of the absorbent insert, whether by the known modifications of the shape of the suction slot, or by the distance of the insert from the sliver.
Die Regelung 30 erhält eine Information über die Haarigkeit dadurch, dass die Haarigkeit des gesponnenen Garns indirekt erfasst wird. Diese indirekte Erfassung erfolgt dadurch, dass die Temperatur des Ring 26 und / oder des Läufers 27 erfasst wird. Die Temperatur des Ringes 26 und des Läufers 27 ist repräsentativ für die Reibwirkung zwischen Läufer 27 und Ring 26 und damit indirekt auch wieder repräsentativ für die Haarigkeit des gesponnenen Garnes, da die Haarigkeit des gesponnenen Garnes maßgeblich für die Reibung ist. Die Temperaturerfassung erfolgt mittels eines Temperatursensors 33, insbesondere eines Infrarot-Sensors.The
Selbstverständlich können auch Mittel vorgesehen werden, mittels welcher direkt die Haarigkeit des gesponnenen Garns erfasst wird. Diese Mittel werden dann zweckmäßig zwischen der Druckwalze 24 und dem Fadenführer 28 angeordnet.Of course, means may be provided by means of which directly the hairiness of the spun yarn is detected. These means are then conveniently placed between the
Im allgemeinen wird es nicht notwendig sein an allen Spinnpositionen die Haarigkeit des Garnes zu erfassen. Das kann an ausgewählten Spinnpositionen geschehen, sogar an nur einer einzigen Position. Die Stellantriebe 31 und 32, die von der Regelung 30 verstellt werden, sind dann so ausgebildet, dass eine Gruppe oder eventuell alle Abdeckungen der Streckwerke einer Maschinenseite gleichzeitig verstellt werden.In general, it will not be necessary to detect the hairiness of the yarn at all spinning positions. This can be done at selected spinning positions, even at a single position. The
Bei einer einfachen Lösung wird vorgesehen, dass eine Bedienungsperson an einer oder mehreren Spinnstellen mittels eines Messgerätes die Haarigkeit des gesponnenen Garnes überprüft und selbst vergleicht, ob die vorhandenen Einstellungen noch die geforderte Haarigkeit ergeben und diese, sofern Abweichungen von dem Grenzwert der Haarigkeit auftreten, manuell verändert.In a simple solution is provided that an operator checks the hairiness of the spun yarn at one or more spinning stations by means of a meter and even compares whether the existing settings still give the required hairiness and this, if deviations from the limit of hairiness occur manually changed.
Selbstverständlich ist das Einstellen der Verdichtungswirkung auch hier nicht auf das Verstellen einer Abdeckung 25 beschränkt. Es bieten sich ebenso mindestens die oben beschriebenen Möglichkeiten an. Zusätzlich sind in der
Auch die dargestellte Verdichtungseinrichtung mit der perforierten Walze 19 ist nur als ein Beispiel für eine pneumatische Verdichtungseinrichtung zu verstehen. Selbstverständlich können alle anderen bekannten pneumatischen Verdichtungseinrichtungen ebenso eingesetzt werden.The illustrated compression device with the
Claims (8)
- Method for operating a ring-spinning machine containing pneumatic condensing devices and means for varying the condensing action of the pneumatic condensing device, characterized by the following steps:a. stipulation of a limit value for the hairiness of the yarn to be spun;b. indirect or direct detection of the hairiness of the spun yarn at at least one spinning station of the ring-spinning machine;c. adjustment of the hairiness of the yarn to be spun to the stipulated limit value by a variation of the condensing action of the pneumatic condensing device, so that the ring-spinning machine is operated at the stipulated limit value of hairiness.
- Method according to Claim 1, characterized in that the temperature of a ring, on which a traveller is guided, or of a traveller of a ring-spinning device is measured at at least one spinning station.
- Ring-spinning machine with pneumatic condensing devices, containing means (21, 22, 23, 25, 30, 31, 32, 33, 34, 35) for maintaining a stipulated hairiness of the yarn to be spun,
characterized in that these means comprise:a. means (33) for the direct or indirect detection of the hairiness of the spun yarn at one or more or all spinning stations;b. means (23, 25, 31, 32, 34, 35) for varying the condensing action of the pneumatic condensing device of the drafting arrangements (13); andc. a control (30), by means of which the hairiness is adjusted to a stipulated limit value or to a stipulated profile of values. - Ring-spinning machine according to one of the preceding claims, characterized in that, as means for varying the condensing action of the pneumatic condensing device of the drafting arrangements, exchangeable suction inserts (21) are provided such that the distance of the suction slit (23) from the sliver is in relation to the predefined hairiness.
- Ring-spinning machine according to one of the preceding claims, characterized in that the distance of the suction slit (23) from the sliver is selectable in proportion to the fineness of the yarn, preferably 0 mm for Ne 100 to 1 mm for Ne 10.
- Ring-spinning machine according to one of the preceding claims, characterized in that means for varying the vacuum on the sliver (23) are present, such that the vacuum in the duct can be set in reciprocal correspondence to the distance of the suction slit from sliver, in particular corresponds to a distance of the suction slit from the sliver of 0 mm 700 N/m2 in the suction-extraction duct or to the distance of 1 mm 2000 N/m2 in the suction-extraction duct.
- Ring-spinning machine according to one of the preceding claims, characterized in that the vacuum on the sliver is kept constant over the entire machine at all the spinning stations, in that the decreasing vacuum in the suction-extraction duct is compensated by a corresponding distance of the suction slit (23) from the sliver, so that the said distance may vary, in particular from 1 mm in the case of a vacuum of 1800 N/m2 in the suction-extraction duct to a distance of 0 mm in the case of a vacuum of 700 N/m2 in the duct.
- Ring-spinning machine according to one of the preceding claims, characterized in that the distance of the suction slit (23) from the sliver is defined by at least one bearing web (34) on the suction insert.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10237999A DE10237999A1 (en) | 2002-08-15 | 2002-08-15 | Method for operating a ring spinning machine and ring spinning machine |
| DE10237999 | 2002-08-15 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1389640A1 EP1389640A1 (en) | 2004-02-18 |
| EP1389640B1 true EP1389640B1 (en) | 2007-08-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP03014224A Expired - Fee Related EP1389640B1 (en) | 2002-08-15 | 2003-06-25 | Method for running a ring-spinning machine and ring-spinning machine |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1389640B1 (en) |
| JP (1) | JP2004076247A (en) |
| DE (2) | DE10237999A1 (en) |
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| CN102505209A (en) * | 2009-12-07 | 2012-06-20 | 罗托卡夫特公司 | Stretching unit for spinning machine for deforming of silver, has multiple roller pairs formed of upper rollers and lower rollers, where upper rollers are held at pressure arm which is fastened pivotally at supporting rod |
| CN103938316A (en) * | 2014-04-22 | 2014-07-23 | 东华大学 | Device and method used for leveling ring spinning yarn hairiness |
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| CN100462488C (en) * | 2004-06-23 | 2009-02-18 | 倪远 | Condensation and condenser for tight spinning whisker |
| CH704373A2 (en) * | 2011-01-20 | 2012-07-31 | Rieter Ag Maschf | Covering device for suction drums of compression devices, has opposite covering elements that are connected with bars, where covering device is fixed between adjacent suction drums |
| CN103938314B (en) * | 2014-04-22 | 2016-08-31 | 东华大学 | The spun yarn even device of a kind of 3 mutual wrapped types and method |
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| DE102017130224A1 (en) * | 2017-12-15 | 2019-06-19 | Maschinenfabrik Rieter Ag | Drafting and compacting device for a spinning machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4139067C2 (en) * | 1991-11-28 | 1993-11-25 | Skf Textilmasch Komponenten | Double apron drafting system for spinning machines |
| DE4323472C2 (en) * | 1993-07-14 | 1997-08-07 | Inst F Textil Und Verfahrenste | Double apron drafting system |
| DE19824079C2 (en) * | 1998-05-29 | 2000-03-30 | Zinser Textilmaschinen Gmbh | Spinning ring / ring traveler assignment for spinning yarns with low hairiness |
| DE19824078C2 (en) * | 1998-05-29 | 2001-05-31 | Zinser Textilmaschinen Gmbh | Process for the production of compacted yarn and device therefor |
| DE19829066A1 (en) * | 1998-06-30 | 2000-01-05 | Stahlecker Fritz | Ring spinner with a balloon limit ring |
| DE19918780A1 (en) * | 1998-11-02 | 2000-05-04 | Fritz Stahlecker | Spun yarn quality control has a monitor at the spinning station or wound cops buffer zone with a stroboscope to register the hairiness of the yarn surface to sort the cops by quality levels and reject faulty cops |
| US6209300B1 (en) * | 1999-01-14 | 2001-04-03 | Fritz Stahlecker | Apparatus for pneumatic condensing of a drafted fiber strand and method of making and using same |
| 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 |
| DE19933747A1 (en) * | 1999-07-19 | 2001-01-25 | Stahlecker Fritz | Spinning machine with multiple spinning positions, each with drafting arrangement for unspun fibrous band, includes individual modular suction unit for each position |
| WO2001051397A1 (en) * | 2000-01-14 | 2001-07-19 | Zellweger Luwa Ag | Method for detecting quality features on yarn |
| DE10025191C2 (en) * | 2000-05-20 | 2003-04-24 | Reiners & Fuerst Gmbh U Co | Ring-traveler combination of a ring spinning or twisting machine |
| 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 |
-
2002
- 2002-08-15 DE DE10237999A patent/DE10237999A1/en not_active Withdrawn
-
2003
- 2003-06-25 EP EP03014224A patent/EP1389640B1/en not_active Expired - Fee Related
- 2003-06-25 DE DE50307852T patent/DE50307852D1/en not_active Expired - Fee Related
- 2003-08-12 JP JP2003207381A patent/JP2004076247A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102505209A (en) * | 2009-12-07 | 2012-06-20 | 罗托卡夫特公司 | Stretching unit for spinning machine for deforming of silver, has multiple roller pairs formed of upper rollers and lower rollers, where upper rollers are held at pressure arm which is fastened pivotally at supporting rod |
| CN103938316A (en) * | 2014-04-22 | 2014-07-23 | 东华大学 | Device and method used for leveling ring spinning yarn hairiness |
Also Published As
| Publication number | Publication date |
|---|---|
| DE10237999A1 (en) | 2004-02-26 |
| EP1389640A1 (en) | 2004-02-18 |
| JP2004076247A (en) | 2004-03-11 |
| DE50307852D1 (en) | 2007-09-20 |
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