EP3115487B1 - Spinning machine and method for operating a spinning frame with a plurality of spinning stations - Google Patents
Spinning machine and method for operating a spinning frame with a plurality of spinning stations Download PDFInfo
- Publication number
- EP3115487B1 EP3115487B1 EP16178071.3A EP16178071A EP3115487B1 EP 3115487 B1 EP3115487 B1 EP 3115487B1 EP 16178071 A EP16178071 A EP 16178071A EP 3115487 B1 EP3115487 B1 EP 3115487B1
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- European Patent Office
- Prior art keywords
- spinning
- piecing
- yarn
- carried out
- production
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- 238000009987 spinning Methods 0.000 title claims description 183
- 238000000034 method Methods 0.000 title claims description 36
- 238000004519 manufacturing process Methods 0.000 claims description 35
- 230000008569 process Effects 0.000 claims description 22
- 239000002657 fibrous material Substances 0.000 claims description 16
- 238000012544 monitoring process Methods 0.000 claims description 6
- 238000004804 winding Methods 0.000 claims description 6
- 239000000835 fiber Substances 0.000 description 6
- 230000008859 change Effects 0.000 description 4
- 238000007383 open-end spinning Methods 0.000 description 3
- 206010020112 Hirsutism Diseases 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000013178 mathematical model Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000007378 ring spinning Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H1/00—Spinning or twisting machines in which the product is wound-up continuously
-
- 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
- D01H13/32—Counting, measuring, recording or registering devices
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H15/00—Piecing arrangements ; Automatic end-finding, e.g. by suction and reverse package rotation; Devices for temporarily storing yarn during piecing
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H4/00—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques
- D01H4/42—Control of driving or stopping
- D01H4/44—Control of driving or stopping in rotor spinning
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H4/00—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques
- D01H4/48—Piecing arrangements; Control therefor
Definitions
- the present invention relates to a method for operating a spinning machine having a plurality of spinning stations, wherein the individual spinning stations are each supplied with a fiber material during a spinning operation and produce a yarn therefrom, wherein the yarn production is interrupted when predefined events occur at individual or all spinning stations, wherein the spinning stations at which the yarn production has been interrupted, are spun on demand by means of a piecing operation to restart the yarn production, and wherein the respective piecing operation is carried out with the aid of spinning machine own handling means.
- a spinning machine with a plurality of spinning stations for the production of yarn wherein the spinning stations each have at least one spinning unit with an inlet for a fiber material and an outlet for the yarn produced from the fiber material, and wherein the spinning stations each have a winding device for winding the produced yarn and a yarn monitoring unit for monitoring at least one yarn parameter of the yarn leaving the respective spinning unit.
- Spinning machines of the generic type can be designed, for example, as air-spinning machines which serve to produce a yarn from a strand-shaped fiber material (eg a sliver) with the aid of a swirling air flow generated by air nozzles within a swirling chamber.
- a strand-shaped fiber material with the aid of a delivery device which is preferably formed by a pair of starter rollers upstream of the spinning unit in the spinning direction of a drafting system, in the direction of Promoted spinning unit and sucked by this by vacuum or sucked.
- the fiber material finally passes into the interior of the spinning unit and there into the region of the inlet mouth of a spindle-shaped yarn formation element.
- the outer fibers of the strand-like fiber material are wound around the inner fibers with the aid of the vortex air flow generated by the air nozzles in the region of the inlet mouth, so that a stable yarn is produced as a result, which finally with the help of a remote from the spinning unit exhaust device via the outlet channel from the vortex chamber withdrawn and wound by means of winding device on a sleeve.
- the spinning machine according to the invention can also be designed as a so-called rotor spinning machine sufficiently described in the prior art, whose principle is that the fibers of a likewise strand-shaped fiber material by means of a resolving device (usually in the form of an opening roller) isolated and the rapidly rotating rotor of the spinning unit to be supplied. Due to the rotor speed, the individual fibers abut the inner wall of the rotor and are twisted into one another. The twisted fibers can finally be drawn off via an outlet of the spinning unit and wound onto a sleeve of a downstream winding device.
- a resolving device usually in the form of an opening roller
- a corresponding rotor spinning machine for example, in the DE 101 37 056 A1 described, among other things, is provided, the track or the standby position of a service robot depending on various factors that affect the individual spinning stations set.
- a comparable strategy is also in the DE 31 35 333 A1 , but there in connection with a ring spinning machine, described.
- the yarn production must start the corresponding spinning station (s) are interrupted. This is done, for example, by stopping the unit supplying the fiber material to the spinning unit (eg, the drafting system of an air-spinning machine) and / or the spinning unit itself, if the yarn production is to be restarted after stopping the yarn production and, in particular, after removing the defective yarn section so is on the previously stopped Spinning a piecing process necessary.
- the unit supplying the fiber material to the spinning unit eg, the drafting system of an air-spinning machine
- the spinning unit eg, the drafting system of an air-spinning machine
- the end of the yarn already produced ie the end section of the last yarn section wound before the interruption of the yarn production
- the end of the yarn already produced is turned into or through the outlet of the spinning unit, contrary to the actual spinning direction and possibly after one or more intermediate steps (eg a yarn end preparation) these returned.
- the yarn end is brought into contact with the fiber material supplied to the spinning unit or the correspondingly supplied individual fibers and withdrawn from the spinning unit in the spinning direction.
- the normal spinning operation is finally resumed, in which a yarn is produced from the fiber material fed to the spinning unit.
- the object of the present invention is therefore to improve the piecing process described in such a way that the efficiency of the spinning machine is improved.
- the yarn leaving the spinning units of the individual spinning stations is monitored during the spinning operation of the respective spinning stations with the aid of yarn monitoring units assigned to the individual spinning stations (eg sensors visually or capacitively monitoring the yarn).
- the monitored yarn parameters may, for example, be the thickness or the hairiness of the yarn and / or the time change of corresponding yarn parameters. If one or more yarn parameters deviate or deviate from a predetermined target, or if specified limits are exceeded, the yarn production at the corresponding spinning station is interrupted. Likewise, it may be necessary to interrupt yarn production at one or more spinning stations for maintenance or repair purposes. After all these predefined events, it is necessary to re-spin the previously stopped spinning station to continue the yarn production.
- the present invention is characterized in that the individual spinning stations are classified on the basis of one or more production-related characteristics, ie are qualitatively evaluated, and that when more piecing operations occur at the same time are to be performed, as can be performed by the responsible for piecing handling means (service robots and / or spinning-own piecing, such as suction or blowing nozzles), at least the selection of the spinning station to be started next taking into account the classification mentioned.
- the responsible for piecing handling means service robots and / or spinning-own piecing, such as suction or blowing nozzles
- the order of the spinning stations to be started one after the other does not depend, or at least not exclusively, on the order in which the yarn production at the corresponding spinning stations was previously stopped. Rather, in the chronological order in which the spinning stations are spun, specific individual positions determined or defined by the spinning station are taken into account.
- the parameters are, as will be explained in more detail below, variables that are determined individually for each spinning station and with the aid of which the individual spinning stations can be characterized with regard to their yarn production and / or piecing behavior. If now the parameters are taken into account in the selection of the spinning station to be started next, then the time required in total for piecing the spinning stations of the spinning machine per operating hour can be minimized or the overall efficiency of the spinning machine can be increased.
- the order of successively spun spinning stations therefore deviates, at least in part, from the order in which yarn production at the respective spinning stations was previously stopped.
- the selection of the spinning unit to be started next takes place without consideration of the classification mentioned.
- the individual spinning stations can be spun, for example, in the chronological order in which the yarn production at the corresponding spinning stations was previously stopped.
- the chronological order of successively Spinning positions to be spun depend, among other things, on whether more spinning stations are to be spun at a certain time than can be spun by the handling means provided for this purpose.
- the parameters mentioned below can be considered as characteristic quantities, with one or more of the parameters being able to be taken into account in the definition of the spinning stations to be started one after the other.
- the sequence is preferably determined by a control unit of the spinning machine or a control unit in operative connection with the latter, wherein in the determination the corresponding parameter (s) is or are taken into account, ie. H. preferably flows into a corresponding deposited mathematical model or incorporated.
- the parameters can thus directly influence the order of the spinning stations to be started.
- the corresponding parameters should be determined separately for each spinning station in order to be able to carry out a correspondingly individual classification of the spinning stations.
- spinning stations are temporarily blocked for the piecing process, in which one or more parameters lie outside defined limits.
- the suspension can be canceled, for example, after a predetermined period of time or manually.
- the blocking of individual spinning stations can be carried out manually or automatically with the aid of the control unit, wherein in the case of an automatic blocking a message can be output to an operator of the spinning machine (eg in the form of an optical signal).
- an operator of the spinning machine eg in the form of an optical signal.
- a size for evaluating the total efficiency would be, for example, the amount of yarn or yarn length averaged over the unrestricted spinning stations, which is produced per unit of time. Decreases the Intelsez bin the spinning machine over time, so single or more spinning stations could be locked for the piecing. If the efficiency increases over time, individual or all previously locked spinning stations could be released again for the piecing process.
- the spinning stations temporarily not spun according to the previous description are re-spun, if the number of piecing operations currently carried out or piecing operations requested by the individual spinning stations reaches or falls below a defined value.
- a value X eg 5
- X + 2 the number of spinning stations to be spun at a certain point in time is, for example, X + 2
- two spinning stations for the piecing process would temporarily be blocked. If the number drops back to a value below the specified value X due to successful piecing processes, additional spinning units that were previously blocked can be spun.
- piecing operations are carried out at least partially, preferably exclusively, by means of spinning-own handling means.
- spinning-own handling means include, for example, suction or blowing nozzles or mechanically acting means, such as gripping elements or pairs of rollers with which the yarn can be guided or transported.
- a service unit (so-called service robot) movable between individual spinning stations is involved in carrying out the piecing operations or if the piecing operations are carried out exclusively with the aid of corresponding service units, the movement of the service unit taking into account the said classification takes place (of course also several service units can be used).
- the service unit (s) is not or not always moved to the spinning station that is to be started, which is the least far away from the service unit. Rather, one or more of the above-mentioned characteristics of the spinning stations to be spinning are taken into account so that the service unit (s) at least partially also spin-start spinning stations which are farther away than other spinning stations to be spun.
- the classification of the individual spinning stations regularly, d. H. at predetermined intervals, takes place.
- the classification is continuous. This ensures, for example, that the spinning stations are always preferably spun, which have a particularly high production rate or a particularly reliable piecing behavior. Since the amounts of the monitored parameters can change, the piecing priority of the individual spinning stations (that is, which spinning station is preferably spun in relation to another) can also change constantly.
- the invention relates to a spinning machine having the above-mentioned physical features, wherein the spinning machine has a control unit or is operatively connected to a control unit which is designed to operate the spinning machine according to the aspects described so far (the aspects realized individually or in any combination can be).
- the spinning machine also has sensors that can be used to determine the parameters taken into account during piecing.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Spinning Or Twisting Of Yarns (AREA)
Description
Die vorliegende Erfindung betrifft ein Verfahren zum Betreiben einer Spinnmaschine mit einer Vielzahl von Spinnstellen, wobei die einzelnen Spinnstellen während eines Spinnbetriebs jeweils mit einem Fasermaterial beliefert werden und hieraus ein Garn produzieren, wobei die Garnproduktion beim Eintreten vordefinierter Ereignisse an einzelnen oder allen Spinnstellen unterbrochen wird, wobei die Spinnstellen, an denen die Garnproduktion unterbrochen wurde, bei Bedarf mit Hilfe eines Anspinnvorgangs angesponnen werden, um die Garnproduktion wieder in Gang zu setzen, und wobei der jeweilige Anspinnvorgang mit Hilfe von spinnmaschineneigenen Handhabungsmitteln erfolgt.The present invention relates to a method for operating a spinning machine having a plurality of spinning stations, wherein the individual spinning stations are each supplied with a fiber material during a spinning operation and produce a yarn therefrom, wherein the yarn production is interrupted when predefined events occur at individual or all spinning stations, wherein the spinning stations at which the yarn production has been interrupted, are spun on demand by means of a piecing operation to restart the yarn production, and wherein the respective piecing operation is carried out with the aid of spinning machine own handling means.
Ferner wird eine Spinnmaschine mit einer Vielzahl von Spinnstellen zur Produktion von Garn vorgeschlagen, wobei die Spinnstellen jeweils zumindest eine Spinneinheit mit einem Einlass für ein Fasermaterial und einem Auslass für das aus dem Fasermaterial produzierte Garn aufweisen, und wobei die Spinnstellen jeweils eine Spulvorrichtung zum Aufspulen des produzierten Garns und eine Garnüberwachungseinheit zur Überwachung wenigstens eines Garnparameters des, die entsprechende Spinneinheit verlassenden, Garns aufweisen.Furthermore, a spinning machine with a plurality of spinning stations for the production of yarn is proposed, wherein the spinning stations each have at least one spinning unit with an inlet for a fiber material and an outlet for the yarn produced from the fiber material, and wherein the spinning stations each have a winding device for winding the produced yarn and a yarn monitoring unit for monitoring at least one yarn parameter of the yarn leaving the respective spinning unit.
Gattungsgemäße Spinnmaschinen können beispielsweise als Luftspinnmaschinen ausgebildet sein, die der Herstellung eines Garns aus einem strangförmigen Fasermaterial (z. B. einem Faserband) mit Hilfe einer durch Luftdüsen innerhalb einer Wirbelkammer erzeugten Wirbelluftströmung dienen. Hierfür wird ein strangförmiges Fasermaterial mit Hilfe einer Liefervorrichtung, die vorzugsweise durch ein der Spinneinheit in Spinnrichtung vorgelagertes Ausgangswalzenpaar eines Streckwerks gebildet ist, in Richtung der Spinneinheit gefördert und von dieser durch Unterdruck an- bzw. eingesaugt. Das Fasermaterial gelangt schließlich ins Innere der Spinneinheit und dort in den Bereich der Einlassmündung eines spindelförmigen Garnbildungselements. Die äußeren Fasern des strangförmigen Fasermaterials werden mit Hilfe der von den Luftdüsen erzeugten Wirbelluftströmung im Bereich der Einlassmündung um die innenliegenden Fasern gewunden, so dass im Ergebnis ein stabiles Garn entsteht, welches schließlich mit Hilfe einer außerhalb der Spinneinheit angeordneten Abzugsvorrichtung über den Abzugskanal aus der Wirbelkammer abgezogen und mittels Spulvorrichtung auf eine Hülse aufgespult wird.Spinning machines of the generic type can be designed, for example, as air-spinning machines which serve to produce a yarn from a strand-shaped fiber material (eg a sliver) with the aid of a swirling air flow generated by air nozzles within a swirling chamber. For this purpose, a strand-shaped fiber material with the aid of a delivery device, which is preferably formed by a pair of starter rollers upstream of the spinning unit in the spinning direction of a drafting system, in the direction of Promoted spinning unit and sucked by this by vacuum or sucked. The fiber material finally passes into the interior of the spinning unit and there into the region of the inlet mouth of a spindle-shaped yarn formation element. The outer fibers of the strand-like fiber material are wound around the inner fibers with the aid of the vortex air flow generated by the air nozzles in the region of the inlet mouth, so that a stable yarn is produced as a result, which finally with the help of a remote from the spinning unit exhaust device via the outlet channel from the vortex chamber withdrawn and wound by means of winding device on a sleeve.
Ebenso kann die erfindungsgemäße Spinnmaschine aber auch als so genannte und im Stand der Technik hinlänglich beschriebene Rotorspinnmaschine ausgebildet sein, deren Prinzip darin besteht, dass die Fasern eines ebenfalls strangförmigen Fasermaterials mit Hilfe einer Auflöseeinrichtung (in der Regel in Form einer Auflösewalze) vereinzelt und dem sich schnell drehenden Rotor der Spinneinheit zugeführt werden. Die Einzelfasern legen sich aufgrund der Rotordrehzahl an die Innenwand des Rotors an und werden hierbei ineinander verdreht. Die verdrehten Fasern können schließlich über einen Auslass der Spinneinheit abgezogen und auf eine Hülse einer nachgeordneten Spulvorrichtung aufgespult werden. Eine entsprechende Rotorspinnmaschine wird beispielsweise in der
Kommt es während des Spinnprozesses zu Spinnfehlern (nicht tolerierbare Haarigkeit oder Dick- oder Dünnstellen des Garns, unbefriedigende Zufuhr des Fasermaterials, etc.) oder sollen eine oder mehrere Spinnstellen für einen bestimmten Zeitraum abgestellt werden, so muss die Garnproduktion an der/den entsprechenden Spinnstelle(n) unterbrochen werden. Dies geschieht beispielsweise durch Stoppen der das Fasermaterial in die Spinneinheit liefernden Einheit (z. B. des Streckwerks einer Luftspinnmaschine) und/oder der Spinneinheit selbst. Soll die Garnproduktion nach dem Stopp der Garnproduktion und insbesondere nach Entfernen des fehlerhaften Garnabschnitts wieder in Gang gesetzt werden, so ist an der zuvor gestoppten Spinnstelle ein Anspinnvorgang notwendig.If spinning defects occur during the spinning process (intolerable hairiness or thick or thin spots of the yarn, unsatisfactory feeding of the fiber material, etc.) or if one or more spinning stations are to be shut down for a certain period of time, the yarn production must start the corresponding spinning station (s) are interrupted. This is done, for example, by stopping the unit supplying the fiber material to the spinning unit (eg, the drafting system of an air-spinning machine) and / or the spinning unit itself, if the yarn production is to be restarted after stopping the yarn production and, in particular, after removing the defective yarn section so is on the previously stopped Spinning a piecing process necessary.
Hierbei wird das spulenseitige Ende des bereits produzierten Garns (d. h. der Endabschnitt des vor der Unterbrechung der Garnherstellung zuletzt aufgespulten Garnabschnitts) entgegen der eigentlichen Spinnrichtung und eventuell nach einem oder mehreren Zwischenschritten (z. B. einer Garnendenpräparation) über den Auslass der Spinneinheit in oder durch diese rückgeführt. Anschließend wird das Garnende mit dem der Spinneinheit zugeführten Fasermaterial bzw. den entsprechend zugeführten Einzelfasern in Kontakt gebracht und in Spinnrichtung aus der Spinneinheit abgezogen. Hierbei wird schließlich der normale Spinnbetrieb wieder aufgenommen, bei dem aus dem der Spinneinheit zugeführten Fasermaterial ein Garn produziert wird.In this case, the end of the yarn already produced (ie the end section of the last yarn section wound before the interruption of the yarn production) is turned into or through the outlet of the spinning unit, contrary to the actual spinning direction and possibly after one or more intermediate steps (eg a yarn end preparation) these returned. Subsequently, the yarn end is brought into contact with the fiber material supplied to the spinning unit or the correspondingly supplied individual fibers and withdrawn from the spinning unit in the spinning direction. In this case, the normal spinning operation is finally resumed, in which a yarn is produced from the fiber material fed to the spinning unit.
Generell kommt es nun immer wieder vor, dass gleichzeitig an mehreren Spinnstellen ein Anspinnvorgang durchgeführt werden muss (beispielsweise beim Hochfahren der Spinnmaschine, bei der alle Spinnstellen angesponnen werden müssen oder nach der Unterbrechung der Garnproduktion an mehreren Spinnstellen). Hierbei tritt jedoch das Problem auf, dass die Spinnmaschine in der Regel nur zur Ausführung einer begrenzten Anzahl an gleichzeitigen Anspinnvorgängen ausgelegt ist. Wird der Anspinnvorgang beispielsweise durch ein entlang der Spinnstellen hin und her bewegbares Serviceaggregat (so genannter Serviceroboter) durchgeführt oder unterstützt, so ist die Zahl der gleichzeitig anspinnbaren Spinnstellen durch die Anzahl der Serviceaggregate begrenzt. Ebenso ist die Anzahl begrenzt, wenn die Anspinnvorgänge durch spinnstelleneigene Anspinnmittel durchgeführt werden, da diese einen gewissen Energie- und insbesondere einen bestimmten Druckluft- bzw. Unterdruckbedarf besitzen, der nur bis zu einem bestimmten Grad von der Spinnmaschine gedeckt werden kann.In general, it now happens again and again that at several spinning stations a piecing must be performed (for example, when starting up the spinning machine in which all spinning units must be wound or after the interruption of yarn production at several spinning stations). Here, however, the problem arises that the spinning machine is usually designed only to perform a limited number of simultaneous piecing operations. If the piecing process is carried out or supported, for example, by a service unit (so-called service robot) which can be moved back and forth along the spinning stations, then the number of spinning stations that can be pieced together is limited by the number of service units. Likewise, the number is limited when the piecing operations are performed by spinning center's own piecing, as they have a certain energy and in particular a certain compressed air or vacuum demand, which can be covered only to a certain extent by the spinning machine.
Im Ergebnis können also immer nur eine bestimmte Anzahl an Anspinnvorgängen gleichzeitig durchgeführt werden, wobei es im Stand der Technik üblich ist, die Spinnstellen in der zeitlichen Reihenfolge anzuspinnen, in der sie zuvor stillgesetzt wurden. Auch wenn dieses Vorgehen steuerungstechnisch recht einfach zu realisieren ist, besteht Verbesserungsbedarf, um die Gesamtzeit, die für die Durchführung der Anspinnvorgänge pro Betriebsstunde der Spinnmaschine benötigt wird, zu verringern.As a result, only a certain number of piecing processes can always be carried out simultaneously, wherein it is customary in the prior art to spin the spinning stations in the chronological order in which they are previously shut down. Even though this procedure is relatively simple to implement in terms of control technology, there is room for improvement in order to reduce the total time required to carry out the piecing operations per operating hour of the spinning machine.
Aufgabe der vorliegenden Erfindung ist es daher, das beschriebene Anspinnverfahren derart zu verbessern, dass die Effizienz der Spinnmaschine verbessert wird.The object of the present invention is therefore to improve the piecing process described in such a way that the efficiency of the spinning machine is improved.
Die Aufgabe wird gelöst durch ein Verfahren und eine Spinnmaschine mit den Merkmalen der unabhängigen Patentansprüche.The object is achieved by a method and a spinning machine with the features of the independent claims.
Im Rahmen des erfindungsgemäßen Verfahrens ist nun vorgesehen, dass das die Spinneinheiten der einzelnen Spinnstellen verlassende Garn während des Spinnbetriebs der jeweiligen Spinnstellen mit Hilfe von den einzelnen Spinnstellen zugeordneten Garnüberwachungseinheiten (z. B. mittels das Garn optisch oder kapazitiv überwachender Sensoren) überwacht werden. Bei den überwachten Garnparametern kann es sich beispielsweise um die Dicke oder die Haarigkeit des Garns und/oder der zeitlichen Änderung entsprechender Garnparameter handeln. Weicht bzw. weichen ein oder mehrere Garnparameter von einem vorgegeben Soll ab oder werden festgelegte Grenzen überschritten, so wird die Garnproduktion an der entsprechenden Spinnstelle unterbrochen. Ebenso kann es nötig sein, die Garnproduktion an einer oder mehreren Spinnstellen für Wartungs- oder Reparaturzwecke zu unterbrechen. Nach all diesen vordefinierten Ereignissen ist es nötig, die zuvor gestoppte Spinnstelle wieder anzuspinnen, um mit der Garnproduktion fortzufahren.In the context of the method according to the invention, it is now provided that the yarn leaving the spinning units of the individual spinning stations is monitored during the spinning operation of the respective spinning stations with the aid of yarn monitoring units assigned to the individual spinning stations (eg sensors visually or capacitively monitoring the yarn). The monitored yarn parameters may, for example, be the thickness or the hairiness of the yarn and / or the time change of corresponding yarn parameters. If one or more yarn parameters deviate or deviate from a predetermined target, or if specified limits are exceeded, the yarn production at the corresponding spinning station is interrupted. Likewise, it may be necessary to interrupt yarn production at one or more spinning stations for maintenance or repair purposes. After all these predefined events, it is necessary to re-spin the previously stopped spinning station to continue the yarn production.
Im Gegensatz zum Stand der Technik zeichnet sich die vorliegende Erfindung nun dadurch aus, dass die einzelnen Spinnstellen auf Grundlage einer oder mehrerer produktionsbezogener Kenngrößen klassifiziert, d. h. qualitativ bewertet werden, und dass dann, wenn mehr Anspinnvorgänge zeitgleich durchgeführt werden sollen, als von den für das Anpinnen zuständigen Handhabungsmitteln (Serviceroboter und/oder spinnstelleneigene Anspinnmittel, wie beispielsweise Saug- oder Blasdüsen) durchgeführt werden können, zumindest die Auswahl der als nächstes anzuspinnenden Spinnstelle unter Berücksichtigung der genannten Klassifizierung erfolgt.In contrast to the prior art, the present invention is characterized in that the individual spinning stations are classified on the basis of one or more production-related characteristics, ie are qualitatively evaluated, and that when more piecing operations occur at the same time are to be performed, as can be performed by the responsible for piecing handling means (service robots and / or spinning-own piecing, such as suction or blowing nozzles), at least the selection of the spinning station to be started next taking into account the classification mentioned.
Die Reihenfolge der nacheinander anzuspinnenden Spinnstellen richtet sich somit nicht oder zumindest nicht ausschließlich nach der Reihenfolge, in der die Garnproduktion an den entsprechenden Spinnstellen zuvor gestoppt wurde. Vielmehr werden bei der zeitlichen Reihenfolge, in der die Spinnstellen angesponnen werden, spinnstellenindividuell bestimmte oder festgelegte Kenngrößen berücksichtigt. Bei den Kenngrößen handelt es sich, wie im Folgenden noch näher erläutert, um Größen, die für jede Spinnstelle individuell ermittelt werden und mit deren Hilfe die einzelnen Spinnstellen hinsichtlich ihres Garnproduktions- und/oder Anspinnverhaltens charakterisiert werden können. Werden nun die Kenngrößen bei der Auswahl der als nächstes anzuspinnenden Spinnstelle berücksichtigt, so kann die Zeit, die insgesamt für das Anspinnen der Spinnstellen der Spinnmaschine pro Betriebsstunde benötigt wird, minimiert bzw. die Gesamteffizienz der Spinnmaschine erhöht werden.The order of the spinning stations to be started one after the other does not depend, or at least not exclusively, on the order in which the yarn production at the corresponding spinning stations was previously stopped. Rather, in the chronological order in which the spinning stations are spun, specific individual positions determined or defined by the spinning station are taken into account. The parameters are, as will be explained in more detail below, variables that are determined individually for each spinning station and with the aid of which the individual spinning stations can be characterized with regard to their yarn production and / or piecing behavior. If now the parameters are taken into account in the selection of the spinning station to be started next, then the time required in total for piecing the spinning stations of the spinning machine per operating hour can be minimized or the overall efficiency of the spinning machine can be increased.
Im Ergebnis weicht die Reihenfolge der nacheinander angesponnenen Spinnstellen daher zumindest teilweise von der Reihenfolge ab, in der die Garnproduktion an den entsprechenden Spinnstellen zuvor gestoppt wurde.As a result, the order of successively spun spinning stations therefore deviates, at least in part, from the order in which yarn production at the respective spinning stations was previously stopped.
Vorteilhaft ist es, wenn dann, wenn aktuell weniger Anspinnvorgänge zeitgleich durchgeführt werden, als von den Handhabungsmitteln durchgeführt werden können, die Auswahl der als nächstes anzuspinnenden Spinnstelle ohne Berücksichtigung der genannten Klassifizierung erfolgt. In diesem Fall können die einzelnen Spinnstellen beispielsweise in der zeitlichen Reihenfolge angesponnen werden, in der die Garnproduktion an den entsprechenden Spinnstellen zuvor gestoppt wurde. Die zeitliche Reihenfolge der nacheinander anzuspinnenden Spinnstellen hängt also unter anderem auch davon ab, ob zu einem bestimmten Zeitpunkt mehr Spinnstellen angesponnen werden sollen, als von den hierfür vorgesehenen Handhabungsmitteln angesponnen werden können.It is advantageous if, when currently fewer piecing operations are carried out at the same time than can be carried out by the handling means, the selection of the spinning unit to be started next takes place without consideration of the classification mentioned. In this case, the individual spinning stations can be spun, for example, in the chronological order in which the yarn production at the corresponding spinning stations was previously stopped. The chronological order of successively Spinning positions to be spun depend, among other things, on whether more spinning stations are to be spun at a certain time than can be spun by the handling means provided for this purpose.
Als Kenngrößen kommen insbesondere die im Folgenden genannten Kenngrößen in Betracht, wobei eine oder auch mehrere der Kenngrößen bei der Festlegung der nacheinander anzuspinnenden Spinnstellen berücksichtigt werden können. An dieser Stelle sei darauf hingewiesen, dass die Reihenfolge vorzugsweise von einer Steuereinheit der Spinnmaschine oder einer mit dieser in Wirkverbindung stehenden Steuereinheit bestimmt wird, wobei bei der Bestimmung die entsprechende(n) Kenngröße(n) berücksichtigt wird bzw. werden, d. h. vorzugsweise in ein entsprechend hinterlegtes mathematisches Modell einfließt bzw. einfließen. Die Kenngrößen können also direkt die Reihenfolge der anzuspinnenden Spinnstellen beeinflussen. Alternativ wäre es auch denkbar, aus einer oder mehreren Kenngröße(n) eine oder mehrere weitere Kenngröße(n) zu berechnen und die Reihenfolge auf Basis der auf diese Weise gewonnenen Kenngröße(n) zu bestimmen. In jedem Fall sollten die entsprechenden Kenngrößen für jede Spinnstelle separat ermittelt werden, um eine entsprechend individuelle Klassifikation der Spinnstellen vornehmen zu können.In particular, the parameters mentioned below can be considered as characteristic quantities, with one or more of the parameters being able to be taken into account in the definition of the spinning stations to be started one after the other. It should be noted at this point that the sequence is preferably determined by a control unit of the spinning machine or a control unit in operative connection with the latter, wherein in the determination the corresponding parameter (s) is or are taken into account, ie. H. preferably flows into a corresponding deposited mathematical model or incorporated. The parameters can thus directly influence the order of the spinning stations to be started. Alternatively, it would also be conceivable to calculate one or more parameters from one or more parameters and to determine the sequence on the basis of the parameter (s) obtained in this way. In any case, the corresponding parameters should be determined separately for each spinning station in order to be able to carry out a correspondingly individual classification of the spinning stations.
Als Kenngrößen kommen in Frage:
- Erfolgswahrscheinlichkeit eines Anspinnvorgangs an der entsprechenden Spinnstelle, d. h. nach wie vielen Anspinnversuchen gelingt durchschnittlich ein erfolgreicher Anspinnvorgang; Spinnstellen mit höherer Erfolgswahrscheinlichkeit sollten gegenüber Spinnstellen mit verhältnismäßig geringerer Erfolgswahrscheinlichkeit bevorzugt angesponnen werden.
- Anzahl der pro Zeiteinheit in der Vergangenheit angefangenen Anspinnvorgänge, d. h. wie häufig kommt es an der entsprechenden Spinnstelle pro Zeiteinheit zu einer Unterbrechung der Garnproduktion; Spinnstellen mit einer geringeren Anzahl an in der Vergangenheit angefangenen Anspinnvorgängen sollten gegenüber Spinnstellen mit verhältnismäßig hoher Anzahl bevorzugt angesponnen werden.
- Anzahl der pro Zeiteinheit in der Vergangenheit vollendeten Anspinnvorgänge, insbesondere im Verhältnis zur Anzahl der in der Vergangenheit angefangenen Anspinnvorgänge; Spinnstellen mit einem höherem Verhältnis sollten gegenüber Spinnstellen mit verhältnismäßig geringerem Verhältnis bevorzugt angesponnen werden.
- Zeit, die seit der Unterbrechung der Garnproduktion an der entsprechenden Spinnstelle vergangen ist; dies ist ein Indiz für die Zuverlässigkeit der Spinnstelle bzw. ein Maß für die Menge an pro Zeiteinheit produziertem Garn; Spinnstellen, bei der eine längere Zeit seit der letzten Unterbrechung vergangen ist, sollten gegenüber Spinnstellen, bei der eine verhältnismäßig kürzere Zeit vergangen ist, bevorzugt angesponnen werden.
- Zeit, die seit dem Beginn oder Abschluss des zuletzt begonnenen Anspinnvorgangs vergangen ist, wobei Spinnstellen, bei denen die entsprechende Zeitspanne länger ist, gegenüber Spinnstellen bevorzugt angesponnen werden sollten, bei denen die Zeitspanne verhältnismäßig kürzer ist.
- in der Vergangenheit pro Zeiteinheit produzierte Garnmenge bzw. Garnlänge; Spinnstellen mit größerer zeitbezogener Garnmenge oder Garnlänge sollten gegenüber Spinnstellen mit geringerer zeitbezogener Garnmenge/Garnlänge bevorzugt angesponnen werden.
- Betriebsdauer ausgewählter Komponenten der entsprechenden Spinnstelle, da das Anspinnverhalten bzw. die Produktionsgeschwindigkeit der einzelnen Spinnstellen oftmals direkt oder indirekt von der Betriebsdauer abhängt; Spinnstellen mit kürzerer Betriebsdauer ausgewählter Komponenten (z. B. der Streckwerkswalzen oder deren Bestandteile oder des Garnbildungselements einer Luftspinnmaschine bzw. des Rotors einer Rotorspinnmaschine) sollten gegenüber Spinnstellen bevorzugt angesponnen werden, deren ausgewählte Komponenten eine verhältnismäßig längere Betriebsdauer aufweisen.
- Anzahl der Anspinnvorgänge während der Herstellung einer Garnspule; dieser Wert zeigt an, wie häufig es zu Unterbrechungen der Garnproduktion kommt, d. h. wie zuverlässig die entsprechende Spinnstelle arbeitet; dementsprechend sollten Spinnstellen, bei der es weniger häufig zu Unterbrechungen kommt gegenüber denjenigen Spinnstellen bevorzugt angesponnen werden, bei denen es relativ gesehen häufiger zu Unterbrechungen kommt.
- Ursache für die Unterbrechung der Garnproduktion; beispielsweise könnte eine Spinnstelle, bei der die Garnproduktion wegen einer kurzfristigen Dickenschwankung unterbrochen wurde gegenüber einer Spinnstelle bevorzugt angesponnen werden, bei der vor der Unterbrechung der Garnproduktion eine Dickenschwankung über mehrere Meter Garn beobachtet wurde, da in diesem Fall eventuell die das Fasermaterial zur Spinneinheit liefernde Einheit nicht richtig funktioniert und neu eingestellt werden muss
- Anzahl der Anspinnvorgänge in Abhängigkeit der an der jeweiligen Spinnstelle bereits produzierten Garnmenge (wobei die über einen zuvor definierten Zeitraum produzierte Garnmenge als Basis dient).
- Probability of success of a piecing process at the corresponding spinning station, ie after how many piecing attempts a successful piecing process succeeds on average; Spinning sites with a higher probability of success should preferably be spun in relation to spinning stations with a relatively lower probability of success.
- Number of piecing operations started per unit time in the past ie how often does it happen at the corresponding spinning station per unit time to interrupt the yarn production; Spinning stations with a smaller number of piecing operations started in the past should preferably be spun in relation to relatively high numbers of spinning stations.
- Number of piecing operations completed per unit time in the past, especially in relation to the number of piecing operations started in the past; Spinning stations with a higher ratio should preferably be spun in relation to spinning stations with a relatively lower ratio.
- Time that has elapsed since the interruption of yarn production at the corresponding spinning station; this is an indication of the reliability of the spinning station or a measure of the amount of yarn produced per unit time; Spinning stations, where a long time has elapsed since the last interruption, should preferably be spun in relation to spinning stations, in which a relatively shorter time has passed.
- Time that has elapsed since the beginning or completion of the last-started piecing operation, wherein spinning stations where the corresponding time period is longer should preferably be spun in relation to spinning stations in which the time span is relatively shorter.
- yarn quantity or yarn length produced per unit time in the past; Spinning stations with a larger time-related yarn quantity or yarn length should preferably be spun in relation to spinning stations with a lower time-related yarn quantity / yarn length.
- Operating time of selected components of the corresponding Spinning station, since the Anspinnverhalten or the production speed of the individual spinning stations often directly or indirectly depends on the operating time; Spinning stations with shorter service life of selected components (eg the drafting rollers or their components or the yarn forming element of an air spinning machine or the rotor of a rotor spinning machine) should preferably be spun in relation to spinning stations whose selected components have a relatively longer service life.
- Number of piecing operations during the production of a yarn package; this value indicates how often it comes to interruptions of yarn production, ie how reliable the corresponding spinning station works; Accordingly, spinning stations, where it is less likely to interruptions should be preferred to those spinning stations are spun, where it is relatively more frequently to interruptions.
- Cause for the interruption of yarn production; For example, a spinning station in which yarn production was interrupted due to short-term thickness variation could be preferably spun over a spinning station where thickness variation over several meters of yarn was observed prior to interruption of yarn production because, in this case, the unit delivering the fiber material to the spinning unit does not work properly and needs to be reset
- Number of piecing operations depending on the amount of yarn already produced at the respective spinning station (where the amount of yarn produced over a previously defined period serves as the basis).
Auch ist es von Vorteil, wenn einzelne Spinnstellen in Abhängigkeit ihrer Klassifizierung vorübergehend nicht angesponnen werden.It is also advantageous if individual spinning stations are temporarily not spun depending on their classification.
Erfindungsgemäß ist vorgesehen, Spinnstellen zeitweise für den Anspinnvorgang zu sperren, bei denen eine oder mehrere Kenngrößen außerhalb definierter Grenzwerte liegen. Die Aufhebung der Sperre kann beispielsweise nach einem vorgegebenen Zeitraum oder manuell erfolgen. Ebenso kann die Sperrung einzelner Spinnstellen manuell oder automatisch mit Hilfe der Steuereinheit erfolgen, wobei bei einer automatischen Sperrung eine Meldung an einen Betreiber der Spinnmaschine ausgegeben werden kann (z. B. in Form eines optischen Signals). Beispielsweise wäre es denkbar, einzelne Spinnstellen dann für einen bestimmten Zeitraum nicht anzuspinnen, wenn die Anzahl der Spinnstellen, die gleichzeitig angesponnen werden müssten, einen definierten Betrag übersteigt, wobei hierbei auch Prognosen über die zu erwartenden Anspinnvorgänge in einem in der Zukunft liegenden Zeitabschnitt berücksichtigt werden könnten.According to the invention, spinning stations are temporarily blocked for the piecing process, in which one or more parameters lie outside defined limits. The suspension can be canceled, for example, after a predetermined period of time or manually. Likewise, the blocking of individual spinning stations can be carried out manually or automatically with the aid of the control unit, wherein in the case of an automatic blocking a message can be output to an operator of the spinning machine (eg in the form of an optical signal). For example, it would be conceivable not to spin individual spinning stations for a certain period of time if the number of spinning stations which would have to be simultaneously wound exceeds a defined amount, wherein forecasts of the expected piecing operations in a future period of time are also taken into account could.
Auch ist es äußert vorteilhaft, wenn einzelne Spinnstellen in Abhängigkeit eines Gesamtnutzeffekts der Spinnmaschine vorübergehend nicht angesponnen werden. Eine Größe zur Bewertung des Gesamtnutzeffekts wäre beispielsweise die über die nicht gesperrten Spinnstellen gemittelte Garnmenge bzw. Garnlänge, die pro Zeiteinheit produziert wird. Sinkt der Gesamtnutzeffekt der Spinnmaschine über die Zeit, so könnten einzelne bzw. weitere Spinnstellen für den Anspinnvorgang gesperrt werden. Steigt der Nutzeffekt über die Zeit, so könnten einzelne oder alle zuvor gesperrten Spinnstellen wieder für den Anspinnvorgang freigegeben werden.It is also extremely advantageous if individual spinning stations are temporarily not spun as a function of a total efficiency of the spinning machine. A size for evaluating the total efficiency would be, for example, the amount of yarn or yarn length averaged over the unrestricted spinning stations, which is produced per unit of time. Decreases the Gesamtsezeffekt the spinning machine over time, so single or more spinning stations could be locked for the piecing. If the efficiency increases over time, individual or all previously locked spinning stations could be released again for the piecing process.
Besonders vorteilhaft ist es, wenn die gemäß vorheriger Beschreibung vorübergehend nicht angesponnenen Spinnstellen wieder angesponnen werden, wenn der Gesamtnutzeffekt der Spinnmaschine einen definierten Wert erreicht oder überschreitet. Mit anderen Worten können also Grenzwerte hinterlegt sein, bei deren Über- bzw. Unterschreiten automatisch einzelne Spinnstellen für den Anspinnvorgang gesperrt oder wieder freigegeben werden, wobei die Auswahl der zu sperrenden bzw. wieder freizugebenden Spinnstellen auf Basis der oben genannten Kenngrößen erfolgen sollte.It is particularly advantageous if the spinning stations which have not been temporarily spun according to the above description are re-spun when the total efficiency of the spinning machine reaches or exceeds a defined value. In other words, therefore limit values can be stored, in whose exceeding or falling below automatically individual spinning stations are locked for the piecing or released again, the selection of to be blocked or released again spinning stations should be based on the above parameters.
Ebenso ist es denkbar, einzelne oder alle zuvor nicht angesponnenen Spinnstellen unabhängig von einer erfolgten Klassifizierung über einen entsprechenden Steuerungsbefehl wieder anzuspinnen, z. B. wenn ein Partiewechsel ansteht (d. h. eine andere Art Garn an der Spinnmaschine hergestellt werden soll).Likewise, it is conceivable to spin individual or all previously not spun spinning stations regardless of a successful classification via a corresponding control command again, z. When a batch change is due (i.e., another type of yarn is to be produced on the spinning machine).
Vorteilhaft ist es, wenn die gemäß bisheriger Beschreibung vorübergehend nicht angesponnenen Spinnstellen wieder angesponnen werden, wenn die Anzahl der aktuell durchgeführten oder von den einzelnen Spinnstellen angeforderten Anspinnvorgänge einen definierten Wert erreicht oder unterschreitet. Beispielsweise könnte in der Steuereinheit ein Wert X (z. B. 5) hinterlegt sein, der besagt, dass bis zu X Spinnstellen gleichzeitig angesponnen werden können. Liegt die Anzahl der zu einem bestimmten Zeitpunkt anzuspinnenden Spinnstellen beispielsweise bei X+2, so würden vorübergehend 2 Spinnstellen für den Anspinnvorgang gesperrt. Sinkt die Anzahl durch erfolgreich durchgeführte Anspinnvorgänge wieder auf einen Wert unterhalb des festgelegten Werts X, so können zusätzliche Spinnstellen angesponnen werden, die zuvor gesperrt wurden.It is advantageous if the spinning stations temporarily not spun according to the previous description are re-spun, if the number of piecing operations currently carried out or piecing operations requested by the individual spinning stations reaches or falls below a defined value. For example, a value X (eg 5) could be stored in the control unit stating that up to X spinning stations can be spun simultaneously. If the number of spinning stations to be spun at a certain point in time is, for example, X + 2, then two spinning stations for the piecing process would temporarily be blocked. If the number drops back to a value below the specified value X due to successful piecing processes, additional spinning units that were previously blocked can be spun.
Ebenso bringt es Vorteile mit sich, wenn die Anspinnvorgänge zumindest teilweise, vorzugsweise ausschließlich, mit Hilfe von spinnstelleneigenen Handhabungsmitteln durchgeführt werden. Hierzu zählen beispielsweise Saug- oder Blasdüsen oder auch mechanisch wirkende Mittel, wie beispielsweise Greifelemente oder Walzenpaare, mit denen das Garn geführt bzw. transportiert werden kann.Likewise, it brings advantages when the piecing operations are carried out at least partially, preferably exclusively, by means of spinning-own handling means. These include, for example, suction or blowing nozzles or mechanically acting means, such as gripping elements or pairs of rollers with which the yarn can be guided or transported.
Ebenso kann es Vorteile mit sich bringen, wenn bei der Durchführung der Anspinnvorgänge ein zwischen einzelnen Spinnstellen hin und her bewegbares Serviceaggregat (so genannter Serviceroboter) beteiligt ist bzw. wenn die Anspinnvorgänge ausschließlich mit Hilfe entsprechender Serviceaggregate durchgeführt werden, wobei die Bewegung des Serviceaggregats unter Berücksichtigung der genannten Klassifizierung erfolgt (wobei selbstverständlich auch mehrere Serviceaggregate zum Einsatz kommen können). Mit anderen Worten wird also das bzw. die Serviceaggregate nicht oder nicht immer zu der anzuspinnenden Spinnstelle bewegt, die am wenigsten weit von dem Serviceaggregat entfernt ist. Vielmehr werden auch ein oder mehrere der oben genannten Kenngrößen der anzuspinnenden Spinnstellen berücksichtigt, so dass das bzw. die Serviceaggregate zumindest teilweise auch Spinnstellen zuerst anspinnen, die weiter entfernt sind als andere anzuspinnende Spinnstellen.Likewise, there may be advantages if a service unit (so-called service robot) movable between individual spinning stations is involved in carrying out the piecing operations or if the piecing operations are carried out exclusively with the aid of corresponding service units, the movement of the service unit taking into account the said classification takes place (of course also several service units can be used). In other words, the service unit (s) is not or not always moved to the spinning station that is to be started, which is the least far away from the service unit. Rather, one or more of the above-mentioned characteristics of the spinning stations to be spinning are taken into account so that the service unit (s) at least partially also spin-start spinning stations which are farther away than other spinning stations to be spun.
Vorteilhaft ist es, wenn die Klassifizierung der einzelnen Spinnstellen regelmäßig, d. h. in vorgegebenen Zeitabständen, erfolgt. Vorzugsweise erfolgt die Klassifizierung kontinuierlich. Hierdurch wird beispielsweise sichergestellt, dass stets die Spinnstellen bevorzugt angesponnen werden, die eine besonders hohe Produktionsrate oder ein besonders zuverlässiges Anspinnverhalten haben. Da sich die Beträge der überwachten Kenngrößen ändern können, kann sich auch die Anspinnpriorität der einzelnen Spinnstellen (d. h. welche Spinnstelle gegenüber einer anderen bevorzugt angesponnen wird) ständig ändern.It is advantageous if the classification of the individual spinning stations regularly, d. H. at predetermined intervals, takes place. Preferably, the classification is continuous. This ensures, for example, that the spinning stations are always preferably spun, which have a particularly high production rate or a particularly reliable piecing behavior. Since the amounts of the monitored parameters can change, the piecing priority of the individual spinning stations (that is, which spinning station is preferably spun in relation to another) can also change constantly.
Schließlich betrifft die Erfindung eine Spinnmaschine mit den oben genannten körperlichen Merkmalen, wobei die Spinnmaschine eine Steuereinheit aufweist oder mit einer Steuereinheit in Wirkverbindung steht, die ausgelegt ist, die Spinnmaschine gemäß der bisher beschriebenen Aspekte zu betreiben (wobei die Aspekte einzeln oder in beliebiger Kombination verwirklicht werden können). Insbesondere weist die Spinnmaschine zudem Sensoren auf, mit deren Hilfe sich die beim Anspinnen berücksichtigten Kenngrößen ermitteln lassen.Finally, the invention relates to a spinning machine having the above-mentioned physical features, wherein the spinning machine has a control unit or is operatively connected to a control unit which is designed to operate the spinning machine according to the aspects described so far (the aspects realized individually or in any combination can be). In particular, the spinning machine also has sensors that can be used to determine the parameters taken into account during piecing.
Die vorliegende Erfindung ist nicht auf die dargestellten und beschriebenen Ausführungsbeispiele beschränkt. Abwandlungen im Rahmen der Patentansprüche sind ebenso möglich wie eine beliebige Kombination der beschriebenen Merkmale, auch wenn sie in unterschiedlichen Teilen der Beschreibung bzw. den Ansprüchen dargestellt und beschrieben sind.The present invention is not limited to the illustrated and described embodiments. Variations within the scope of the claims are possible as well as any combination of the features described, even if they differ in different parts of the description or the claims are shown and described.
Claims (10)
- Method for operating a spinning machine with a multiple number of spinning positions,- whereas, during spinning operation, the individual spinning positions are supplied with a fiber material and produce a yarn from this,- whereas, upon the occurrence of predefined events, yarn production is interrupted at individual or all spinning positions,- whereas the spinning positions at which yarn production has been interrupted are, when required, subjected to piecing with the assistance of a piecing process in order to once again start up yarn production, and- whereas the respective piecing process is carried out with the assistance of handling tools associated with the spinning machine,whereas the individual spinning positions are classified on the basis of one or more production-related parameters, and that, if more piecing processes are to be carried out at the same time than can be carried out by the handling tools, at least the selection of the spinning position to be subjected to piecing next is carried out under consideration of the specified classification, characterized in that spinning positions are temporarily not subjected to piecing. whereas one or multiple parameters are outside defined limitations.
- Method according to the preceding claim, characterized in that , if fewer piecing processes are currently carried out at the same time than can be carried out by the handling tools, the selection of the spinning position to be subjected to piecing next is carried out without consideration of the specified classification.
- Method according to one of the preceding claims, characterized in that the classification is carried out under consideration of one or more of the following production-related parameters, whereas the following respective parameters are determined or calculated separately for the individual spinning positions:- probability of success of a piecing process at the corresponding spinning position,- number of piecing processes begun in the past per unit of time,- number of piecing processes ended in the past per unit of time,- time that has elapsed since the interruption of the yarn production at the respective spinning position,- time that has elapsed since the start or end of the most recently started piecing process,- yarn quantity or yarn length produced in the past per unit of time,- operating time of selected components of the corresponding spinning position,- number of piecing processes during the production of a yarn package,- cause of the interruption of yarn production.
- Method according to one of the preceding claims, characterized in that individual spinning positions are temporarily not subjected to piecing, depending on an overall efficiency of the spinning machine.
- Method according to one of the preceding claims, characterized in that the spinning positions temporarily not subjected to piecing are again subjected to piecing if the overall efficiency of the spinning machine reaches or exceeds a defined value.
- Method according to claim 1 to 4, characterized in that the spinning positions temporarily not subjected to piecing according to claims 1 to 4 are again subjected to piecing in if the number of the currently carried out piecing processes reaches or falls below a defined value.
- Method according to one of the preceding claims, characterized in that the piecing processes are carried out at least partially, preferably exclusively, with the assistance of handling tools associated with the spinning positions.
- Method according to one of the preceding claims, characterized in that , one or more service units movable back and forth between individual spinning positions participate in carrying out the piecing processes, whereas the movement of the service unit(s) is carried out under consideration of the specified classification.
- Method according to one of the preceding claims, characterized in that the classification of the individual spinning positions is carried out regularly, preferably continuously.
- Spinning machine with a multiple number of spinning positions for the production of yarn,- whereas each of the spinning positions features at least one spinning unit with an inlet for a fiber material and an outlet for the yarn produced from the fiber material, and- whereas each of the spinning positions features a winding device for winding up the produced yarn and a yarn monitoring unit for monitoring at least one yarn parameter of the yarn leaving the corresponding spinning unit,characterized in that
the spinning machine features a control unit or is in operative connection with a control unit that is designed to operate the spinning machine according to one or more of the preceding claims.
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EP0090911B1 (en) * | 1982-04-05 | 1987-04-01 | Maschinenfabrik Rieter Ag | Method and apparatus to optimize a work occurrence at each working station of a textile machine |
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DE19512592B4 (en) * | 1995-04-04 | 2007-10-31 | Saurer Gmbh & Co. Kg | Cheese making textile machine |
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ITMI20021605A1 (en) * | 2001-07-28 | 2004-01-22 | Rieter Ingolstadt Spinnerei | RUNNING MOVEMENT CONTROL OF AT LEAST ONE MAINTENANCE DEVICE IN A TEXTILE MACHINE |
US6907309B2 (en) * | 2001-07-28 | 2005-06-14 | Rieter Ingolstadt Spinnermaschau Ag | Textile machine with at least one service unit |
DE10165111B4 (en) * | 2001-07-28 | 2018-02-08 | Rieter Ingolstadt Gmbh | Travel movement control of at least two maintenance devices on a textile machine |
DE10137056C5 (en) * | 2001-07-28 | 2018-09-06 | Rieter Ingolstadt Gmbh | Method for the maintenance of a textile machine |
DE102011053812A1 (en) * | 2011-09-21 | 2013-03-21 | Rieter Ingolstadt Gmbh | Spinning machine and method for interrupting the production of yarn on a spinning machine |
CZ303829B6 (en) * | 2012-06-01 | 2013-05-15 | Rieter Cz S.R.O. | Method of and apparatus for spinning yarn on spinning machine |
DE102015122391B4 (en) * | 2015-12-21 | 2023-01-12 | Rieter Ingolstadt Gmbh | Method for controlling a piecing process for re-piecing a yarn on a spinning machine |
-
2015
- 2015-07-08 DE DE102015110992.1A patent/DE102015110992A1/en not_active Withdrawn
-
2016
- 2016-06-28 JP JP2016127628A patent/JP2017025465A/en active Pending
- 2016-07-06 EP EP16178071.3A patent/EP3115487B1/en active Active
- 2016-07-07 CN CN201610531442.8A patent/CN106337219B/en active Active
- 2016-07-07 US US15/203,963 patent/US10351976B2/en active Active
Non-Patent Citations (1)
Title |
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None * |
Also Published As
Publication number | Publication date |
---|---|
CN106337219A (en) | 2017-01-18 |
US20170009386A1 (en) | 2017-01-12 |
JP2017025465A (en) | 2017-02-02 |
US10351976B2 (en) | 2019-07-16 |
DE102015110992A1 (en) | 2017-01-12 |
CN106337219B (en) | 2021-02-12 |
EP3115487A1 (en) | 2017-01-11 |
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