EP2944713A1 - Spinning unit of an air jet spinning machine and its operation - Google Patents
Spinning unit of an air jet spinning machine and its operation Download PDFInfo
- Publication number
- EP2944713A1 EP2944713A1 EP15167155.9A EP15167155A EP2944713A1 EP 2944713 A1 EP2944713 A1 EP 2944713A1 EP 15167155 A EP15167155 A EP 15167155A EP 2944713 A1 EP2944713 A1 EP 2944713A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- additive
- channel
- spinneret
- spinning
- spinning station
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- 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
- D01H4/02—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 imparting twist by a fluid, e.g. air vortex
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H1/00—Spinning or twisting machines in which the product is wound-up continuously
- D01H1/11—Spinning by false-twisting
- D01H1/115—Spinning by false-twisting using pneumatic means
-
- 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
- D01H13/30—Moistening, sizing, oiling, waxing, colouring, or drying yarns or the like as incidental measures during spinning or twisting
- D01H13/306—Moistening, sizing, oiling, waxing, colouring, or drying yarns or the like as incidental measures during spinning or twisting by applying fluids, e.g. steam or oiling liquids
-
- 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
- D01H4/04—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 imparting twist by contact of fibres with a running surface
- D01H4/08—Rotor spinning, i.e. the running surface being provided by a rotor
-
- 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
- D01H4/30—Arrangements for separating slivers into fibres; Orienting or straightening fibres, e.g. using guide-rolls
- D01H4/34—Arrangements for separating slivers into fibres; Orienting or straightening fibres, e.g. using guide-rolls using air-jet streams
Definitions
- the present invention relates to a spinning station of an air spinning machine with a spinneret, which serves to produce a yarn from a fiber composite supplied to the spinneret, wherein the spinneret has an inlet for the fiber structure, an internal swirl chamber, a projecting into the swirl chamber and a discharge channel for the yarn Yarn-forming element and an outlet for the yarn produced in the interior of the spinneret.
- a method for operating an air spinning machine with at least one spinning station wherein the spinning station has at least one spinneret, wherein the spinneret is supplied during operation of the spinning station via an inlet a fiber strand, and wherein the fiber structure in the region of a in a vortex chamber of Spinning nozzle protruding Garn Strukturselements receives a rotation, so that from the fiber strand, a yarn is formed, which leaves the spinneret via a discharge channel of the Garnsentelements and finally via an outlet.
- Air-jet spinning machines with corresponding spinning stations are known in the art and serve to produce a yarn from an elongate fiber structure.
- the outer fibers of the fiber composite are wound around the inner core fibers in the area of a fiber inlet opening of the yarn formation element with the aid of a vortex air flow generated by the air nozzles within the vortex chamber and finally form the binder fibers which determine the desired strength of the yarn.
- B. can be wound on a sleeve.
- the term yarn is thus understood to mean a fiber structure in which at least some of the fibers are around an inner fiber Core are twisted.
- a yarn is included in the traditional sense, which can be processed into a fabric, for example with the aid of a weaving machine.
- the invention also relates to air spinning machines, with the help of so-called roving (other name: Lunte) can be produced.
- roving other name: Lunte
- This type of yarn is characterized by the fact that, despite a certain strength, which is sufficient to transport the yarn to a subsequent textile machine, it is still delayable.
- the roving can thus with the help of a defaulting device, z.
- a roving processing textile machine such as a ring spinning machine, are warped before it is finally spun.
- man-made fibers for example polyesters, or blends of natural and man-made fibers
- deposits are formed on the surface of the yarn-forming element.
- man-made fibers involves a so-called preparation of the continuous fibers during the manufacturing process.
- a spin finish usually oils with various additives, applied to the continuous fibers, which allows a treatment, such as stretching the continuous fibers at high speeds.
- Some of these preparation agents remain attached to the man-made fibers in the further treatment and lead to impurities in the air-spinning machine.
- the fibers supplied to the air-spinning machine in the form of a fiber structure are usually supplied to the spinneret through a pair of delivery rollers.
- the delivery roller pair may correspond to an output roller pair of a drafting system. Used drafting systems serve to refine the submitted fiber structure before entering the spinneret.
- a fiber guide element is usually arranged, via which the fiber structure is guided into the spinneret and finally into the area of the yarn-forming element.
- the EP 2 450 478 discloses a device which allows to perform an automatic cleaning without stopping the machine.
- an additive is added to the compressed air used for the formation of the fluidized air flow within the spinneret.
- the additive is guided by the compressed air to the Garn Strukturselement and causes a cleaning of the surface of Garn Struktursiatas.
- Another embodiment of a cleaning of the Garn Struktursiatas discloses the JP-2008-095-208 , An additive is also supplied to the compressed air used for the turbulence in the spinneret and passed with this compressed air in the spinneret and thus to the Garn Strukturselement.
- the dosage and addition of the additive is separately provided for each spinning station in the disclosed embodiment.
- a disadvantage of the disclosed cleaning systems is that the dosage of the additive depends on the compressed air supply of the air nozzles. A dosage independent thereof is thus eliminated.
- Object of the present invention is therefore to propose a solution that allows a particularly consistent and precisely regulated supply of the spinneret with additive.
- the spinning station is characterized in that it is associated with an additive supply, which is designed to supply the spinneret with an additive.
- the additive supply comprises at least one additive supply line, which communicates fluidically with an additive channel of the yarn formation element.
- the additive channel opens into the swirl chamber of the spinneret or the discharge channel of Garn Strukturselements, so that a via the additive supply line in the additive channel introduced additive can be introduced into the extraction duct and / or the vortex chamber.
- the additive can now be introduced independently of the compressed air supply of the air nozzles of the swirl chamber, so that a special precisely metered additive supply is made possible.
- the additive channel of the Garn realiseselements ends in the region of the take-off channel, d. h., He has an additive outlet opening, which is located in the region of the inner wall of the outlet channel.
- the imaginary extension of a central axis of the additive channel in this case preferably intersects with the center axis of the exhaust duct.
- the additive channel in the region of a tip or a fiber inlet opening of the Garn may be formed as a bore can.
- liquid or even solid substances, or mixtures thereof can be used as additives, water or an aqueous solution being preferred.
- the additive supply in particular the additive supply line, has a metering device for controlling the volume flow and / or the mass flow of the additive discharged via the additive channel.
- the metering device is, for example, a valve or a metering pump which can be controlled manually or with the aid of a controller in order to be able to change the quantity of the additive passing through the valve or the metering pump, the valve, or the metering pump, for example, into the Additive supply line is integrated.
- the additive supply could also be controlled in quantitative terms by the adaptation of the prevailing in the vortex chamber vacuum, the negative pressure is generated by an associated with the vortex chamber vacuum source.
- the additive channel extends at least in sections within the yarn formation element.
- the additive channel may consist of several communicating sections.
- the yarn formation element it would be conceivable for the yarn formation element to have a main body and a tip fixed to the main body and having said fiber inlet opening.
- the withdrawal channel could be composed of a bore arranged within the tip and a further segment extending inside the basic body (whereby this segment could also be formed by a bore).
- a transition section of the additive channel surrounding the outlet channel preferably a ring-shaped transition section, into which both the channel section of the tip and the channel section of the base body terminate may be located.
- the additive channel with the withdrawal channel at least partially encloses an angle whose amount is between 3 ° and 12 °, preferably between 5 ° and 10 °.
- the additive channel is also preferably directed against the transport direction of the yarn within the discharge channel, so that the additive is discharged (obliquely) against the said transport direction in the discharge channel and in this case comes into contact with the fibers of the supplied fiber assembly or yarn.
- the additive channel and the withdrawal channel are at least partially in a common plane.
- the additive channel opens into the extraction channel in the region of a fiber inlet opening of the yarn formation element.
- the additive also reaches into the region of the outer surface of the Garnsentelements and thus the cleaning of this surface are used (the transport of the additive from the discharge channel and thus from the interior of the Garn avoirselements in the region of its outer surface in this case by the in the Vortex chamber prevailing negative pressure, which arises during operation of the spinneret by an air outlet from the vortex chamber).
- the additive channel should open into the withdrawal channel in such a way that the resulting connection region of additive channel and withdrawal channel is less than 10 mm, preferably less than 5 mm, away from the fiber entry opening of the yarn formation element.
- the additive channel extends at least partially within a wall of the yarn formation element surrounding the withdrawal channel and opens into an exit opening which is located in the region of an outer surface of the yarn formation element.
- the additive channel does not go into the withdrawal channel.
- the said outlet opening is preferably located in the outer region of the fiber inlet opening having the front region of the Garnsentelements or its tip.
- the additive is applied directly to the area of the outer surface of the yarn-forming element, which in the yarn production comes into contact with the fiber ends wrapped around the inner core of the fiber-bundle in the region of the fiber inlet opening of the yarn-forming element.
- the additive thus also comes into contact with the fibers and the outer surface of the yarn-forming element in this case, so that, depending on the amount of additive added, the yarn quality is improved and / or the yarn-forming element is cleaned.
- the additive channel is additionally in fluid communication with a compressed air line of the spinning station, so that via the compressed air line introduced compressed air can be introduced via the additive channel in the discharge channel and / or the vortex chamber.
- the introduction of compressed air is particularly advantageous during a piecing operation at the corresponding spinning station, in which a yarn end is introduced into the extraction channel via the outlet of the spinneret in the opposite direction to the transport direction prevailing in the spinning operation.
- the introduced, preferably coming from a bobbin yarn end is detected during the piecing of the said air flow and transported through the discharge channel.
- the yarn end After exiting the exhaust duct via the fiber entrance opening, the yarn end may finally be conveyed outwardly through the inlet of the spinneret (this being also assisted by said air flow) and connected to an end portion of a fiber composite.
- the previously deactivated air nozzles of the spinneret are again supplied with compressed air and the compressed air supply via the additive channel suppressed, so that the connected to the fiber structure Garnende and thus the fiber structure again comes in the transport direction in the vortex chamber and the spinning operation can be resumed.
- the compressed-air line and / or the additive supply line is assigned at least one valve which can assume two different valve positions, wherein the additive channel is in fluid communication with either the compressed-air line or the additive-supply line depending on the valve position.
- the first position may be selected in the course of the piecing operation described, the spinneret can be supplied with additive in the second position, this being advantageous during the spinning operation following the piecing process.
- the valve could be manually operated, for example.
- valve is connected to a controller is, which is designed to hold the valve during a spinning operation of the spinning station at least temporarily in a first valve position, in which the additive channel communicates fluidically with the additive supply line.
- controller should be designed to hold the valve during a piecing operation of the spinning station at least temporarily in a second valve position, in which the additive channel communicates fluidly with the compressed air line.
- the valve position is automatically selected by the controller in this case, so that additive is supplied to the spinneret only when no piecing is performed and vice versa.
- the method according to the invention is characterized in that the spinneret of the corresponding air-spinning machine is at least temporarily supplied with an additive with the aid of an additive supply during operation of the spinning station, the added additive being discharged via an additive channel of the yarn-forming element into the exhaust duct and / or the swirl chamber.
- the spinneret of the corresponding air-spinning machine is at least temporarily supplied with an additive with the aid of an additive supply during operation of the spinning station, the added additive being discharged via an additive channel of the yarn-forming element into the exhaust duct and / or the swirl chamber.
- the additive according to the present invention is introduced into the spinneret independently of the compressed air introduced during the spinning operation via the air nozzles of the respective spinneret, so that a metering of the additive independent of the air pressure of said compressed air is possible.
- additive is dispensed via the additive channel via the additive channel during a spinning operation of the spinning station at least temporarily, and if during a piecing operation of the spinning station at least temporarily compressed air is discharged via the additive channel.
- the additive channel is in this case used either for the additive delivery or a compressed air delivery, wherein the compressed air delivery allows a return of a yarn end from the outlet of the spinneret in a region upstream of the inlet thereof.
- the additive channel is in fluid communication with an additive supply line and a compressed air line.
- the additive supply line and / or the compressed air line should be assigned at least one valve, wherein the valve is held by means of a control during a spinning operation of the spinneret at least temporarily in a first valve position in which the additive channel is fluidically connected to the additive supply line.
- the valve should be held by means of the controller during a piecing operation of the spinneret at least temporarily in a second valve position, in which the additive channel is in fluid communication with a compressed air line. The position of the corresponding valve is thus regulated by the controller, so that an automatic operation of the valve is possible.
- the metering device may be, for example, a valve or a metering pump, wherein a valve is additionally movable between a plurality of positions.
- a valve is additionally movable between a plurality of positions.
- the volume flow of the additive delivered at least temporarily amounts to between 0.001 ml / min and 7.0 ml / min, preferably between 0.01 ml / min and 5.0 ml / min, particularly preferably between 0.05 and 3.0 ml / min, and / or when the mass flow of the added additive at least temporarily an amount between 0.001 g / min and 7.0 g / min, preferably between 0.01 g / min and 5.0 g / min, more preferably between 0.05 g / min and 3.0 g / min.
- a metering device which effects the metering of the additive should therefore permit a regulation of the volume or mass flow over the stated span widths in order to be able to operate the individual spinnerets both in normal operation and in cleaning operation.
- the volume flow (or mass flow) of the added additive during normal operation of the air-spinning machine an amount between 0.001 ml / min (or g / min) and 1.5 ml / min (or g / min ), preferably between 0.01 ml / min (or g / min) and 1.0 ml / min (or g / min), and when the volume flow (or mass flow) of the added additive during a cleaning operation of the air-jet spinning machine an amount between 2.0 ml / min (or g / min) and 7.0 ml / min (or g / min), preferably between 3.0 ml / min (or g / min) and 7.0 ml / min (or g / min).
- the exact value can be selected depending on the properties of the fiber composite and / or its feed rate into the spinning station and / or the withdrawal speed of the yarn from the spinning station and can therefore vary depending on the application. Likewise, the value can be selected as a function of the duration of the cleaning operation or the duration of the normal operation between two cleaning sections.
- FIG. 1 shows a section of a spinning station of an air-spinning machine according to the invention (wherein the air-spinning machine can of course have a plurality of, preferably adjacent to each other, spinning stations).
- the air-spinning machine may comprise a drafting unit 20 with a plurality of drafting rollers 19 (which may be partially looped around a strap 28), which is supplied with a fiber structure 3, for example in the form of a relined conveyor belt.
- the spinning station shown comprises a in FIG.
- the air-spinning machine a pair of delivery rollers downstream of the spinneret 1 and two take-off rollers 26 and a winding device 27 connected downstream of the take-off roller pair for winding of the spinning unit leaving yarn 2 on a sleeve.
- the spinning station according to the invention need not necessarily have a drafting system 20. Also, the pair of take-off rollers is not absolutely necessary.
- the spinning station shown generally works by an air spinning process.
- the fiber structure 3 is guided into the swirl chamber 5 of the spinneret 1 via a fiber guide element 18 provided with an inlet opening forming said inlet 4.
- a rotation ie at least part of the free fiber ends of the fiber composite 3 is detected by a fluidized air flow, which is generated by correspondingly arranged in a swirl chamber surrounding the vortex chamber 5 air nozzles 22 (wherein the air nozzles 22 communicate via an air supply channel 23 which in turn is connected to a compressed air line 25, which is supplied with compressed air via a compressed air supply 29, see also FIG. 6 and the associated description).
- a part of the fibers is in this case pulled out of the fiber structure 3 at least a little bit and wound around the front region of a projecting into the swirl chamber 5 Garnsentelements 6.
- the introduced via the air nozzles 22 compressed air leaves the spinneret 1 finally via the outlet channel 24 and a possibly existing air outlet 21, if necessary can be connected to a vacuum source.
- the yarn 2 produced can basically be any desired fiber structure 3, which characterized in that an outer part of the fibers (so-called Umwindemaschinen) is wrapped around an inner, preferably untwisted or if necessary also rotated part of the fibers in order to give the yarn 2, the desired strength.
- an air-spinning machine with the aid of which so-called roving can be produced.
- Roving is a yarn 2 with a relatively small proportion of wraparound fibers, or a yarn 2 in which the wraparound fibers are wound relatively loosely around the inner core, so that the yarn 2 remains deformable. This is crucial if the produced yarn 2 on a subsequent textile machine (for example, a ring spinning machine) should be distorted again with the help of a drafting system or must, in order to be further processed accordingly.
- the individual air nozzles 22 are arranged in this case rotationally symmetrical to one another and open tangentially into the swirl chamber 5.
- additive supply 8 associated with one or more additive providing the additive storage 9 (for example in the form of an additive and a gaseous pressure medium having pressure vessel) and one or more, preferably at least partially flexible, additive supply lines 14, via which the respective additive memory 9 with a Additive channel 10 is fluidically related (with regard to possible additives, reference is made to the previous description).
- additive storage 9 for example in the form of an additive and a gaseous pressure medium having pressure vessel
- additive supply lines 14 via which the respective additive memory 9 with a Additive channel 10 is fluidically related (with regard to possible additives, reference is made to the previous description).
- the said additive channel 10 at least partially extends within the Garn avoirselements 6, wherein the Additive channel 10 may be present as a bore, for example.
- the additive channel 10 starting from a port 30 (which in turn is in fluid communication with the additive supply line 14) in the discharge channel 24 open, wherein the transition from the additive channel 10 into the discharge channel 24 preferably in the region of the fiber inlet opening 32 of the Garn Strukturselements. 6 is arranged.
- the (sorry in FIG. 3 indicated) angle ⁇ between the discharge channel 24 and the additive channel 10 are in the order mentioned in the general description.
- An additive introduced via the additive channel 10 comes in contact with the fibers of the yarn 2 in this area and in this case brings about a qualitative improvement in the yarn properties (strength, hairiness, etc.). If the amount of additive during a cleaning operation of the spinneret 1 is increased accordingly, the additive also passes through the prevailing in the swirl chamber 5 negative pressure in the region of the outer surface 13 of the Garnsentelements 6 and causes a cleaning of the same.
- the outlet opening 15 of the additive channel 10 is arranged in the region of the aforementioned outer surface 13 of the yarn formation element 6, wherein the additive channel 10 is preferably likewise arranged in a wall 12 of the yarn formation element 6 surrounding the extraction channel 24 (see FIG FIG. 4 ). Also in this case, the additive comes into contact with the fibers entering the withdrawal channel 24 and moreover reliably in the area of the outer surface 13 of the yarn formation element 6.
- FIG. 5 Another embodiment of a possible Garn Strukturselements 6 is in FIG. 5 shown.
- the Garn Strukturselement 6 shown there is in contrast to the Figures 3 and 4 formed in several parts.
- the Garnticianselement 6 comprises a base body 33 and a hereby (for example releasably) connected tip 34.
- the Additive channel 10 multiple sections, wherein in the transition region between the base body 33 and tip 34, an annular channel 35 may be present to ensure that the said portions of the additive channel 10 are independent of a relative rotation of the body 33 and tip 34 always in fluid communication ,
- FIG. 6 a schematic diagram of a section of an air-spinning machine according to the present invention.
- a first (in FIG. 6 : Lower) compressed air line 25 is present, on the one hand with a compressed air supply 29 of the spinning machine and on the other hand, as in FIG. 2 shown, with the air nozzles 22 of the spinneret 1 is in communication.
- the individual air nozzles 22 can be acted upon by compressed air via compressed air line 25.
- an additive reservoir 9 is present, the fluidically via an additive supply line 14 with in the FIGS. 3 to 5 shown, wherein the additive supply line 14 may include a metering device 17 in order to regulate the volume and / or mass flow of the additive supplied (the metering device 17 may be for this purpose with the controller 16 in conjunction to an automatic To allow regulation).
- the additive supply line 14 may include a metering device 17 in order to regulate the volume and / or mass flow of the additive supplied (the metering device 17 may be for this purpose with the controller 16 in conjunction to an automatic To allow regulation).
- FIG. 6 the compressed air supply 29 upwards leaving
- compressed air line 25 may be present, the flow also with the in the FIGS. 3 to 5 can be connected shown connection 30.
- the additive channel 10 can also be acted upon in this case with compressed air in order to carry out the piecing process described above.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Spinning Or Twisting Of Yarns (AREA)
Abstract
Die Erfindung betrifft eine Spinnstelle einer Luftspinnmaschine mit einer Spinndüse (1), die der Herstellung eines Garns (2) aus einem der Spinndüse (1) zugeführten Faserverband (3) dient, wobei die Spinndüse (1) einen Einlass (4) für den Faserverband (3), eine innenliegende Wirbelkammer (5), ein in die Wirbelkammer (5) ragendes und einen Abzugskanal (24) für das Garn (2) aufweisendes Garnbildungselement (6) sowie einen Auslass (7) für das im Inneren der Spinndüse (1) erzeugte Garn (2) aufweist. Erfindungsgemäß wird vorgeschlagen, dass der Spinndüse (1) eine Additivversorgung (8) zugeordnet ist, die ausgebildet ist, die Spinndüse (1) mit einem Additiv zu versorgen, wobei das Garnbildungselement (6) wenigstens einen Additivkanal (10) aufweist, der in die Wirbelkammer (5) oder den Abzugskanal (24) mündet, und wobei die Additivversorgung (8) zumindest eine Additivversorgungsleitung (14) umfasst, die mit dem Additivkanal (10) strömungstechnisch in Verbindung steht, so dass ein über die Additivversorgungsleitung (14) in den Additivkanal (10) eingebrachtes Additiv in den Abzugskanal (24) und/oder die Wirbelkammer (5) einbringbar ist. Darüber hinaus wird ein Verfahren zum Betrieb einer Luftspinnmaschine mit wenigstens einer Spinnstelle vorgeschlagen, wobei der Spinndüse (1) der Spinnstelle während des Betriebs derselben zumindest zeitweise ein Additiv mit Hilfe einer Additivversorgung (8) zugeführt wird, und wobei das zugeführte Additiv über einen Additivkanal (10) des Garnbildungselements (6) in den Abzugskanal (24) und/oder die Wirbelkammer (5) abgegeben wird.The invention relates to a spinning station of an air spinning machine with a spinneret (1), which is used to produce a yarn (2) from one of the spinneret (1) supplied fiber strand (3), wherein the spinneret (1) has an inlet (4) for the fiber structure (3), an internal vortex chamber (5), a Garnbildelement (6) projecting into the vortex chamber (5) and a discharge channel (24) for the yarn (2) and an outlet (7) for inside the spinneret (1 ) produced yarn (2). According to the invention, it is proposed that the spinneret (1) is assigned an additive supply (8) which is designed to supply the spinneret (1) with an additive, wherein the yarn-forming element (6) has at least one additive channel (10) which is inserted into the spinneret Whirl chamber (5) or the discharge channel (24) opens, and wherein the additive supply (8) comprises at least one additive supply line (14), which is in fluid communication with the additive channel (10), so that via the additive supply line (14) in the Additive channel (10) introduced additive in the discharge channel (24) and / or the vortex chamber (5) can be introduced. In addition, a method for operating an air-jet spinning machine with at least one spinning station is proposed, wherein the spinneret (1) of the spinning station is at least temporarily supplied with an additive with the aid of an additive supply (8) to the spinning station during operation, and wherein the added additive is fed via an additive channel (8). 10) of the Garnbildungselements (6) in the discharge channel (24) and / or the vortex chamber (5) is discharged.
Description
Die vorliegende Erfindung betrifft eine Spinnstelle einer Luftspinnmaschine mit einer Spinndüse, die der Herstellung eines Garns aus einem der Spinndüse zugeführten Faserverband dient, wobei die Spinndüse einen Einlass für den Faserverband, eine innenliegende Wirbelkammer, ein in die Wirbelkammer ragendes und einen Abzugskanal für das Garn aufweisendes Garnbildungselement sowie einen Auslass für das im Inneren der Spinndüse erzeugte Garn aufweist. Darüber hinaus wird ein Verfahren zum Betrieb einer Luftspinnmaschine mit wenigstens einer Spinnstelle vorgeschlagen, wobei die Spinnstelle wenigstens eine Spinndüse aufweist, wobei der Spinndüse während des Betriebs der Spinnstelle über einen Einlass ein Faserverband zugeführt wird, und wobei der Faserverband im Bereich eines in eine Wirbelkammer der Spinndüse ragenden Garnbildungselements eine Drehung erhält, so dass aus dem Faserverband ein Garn gebildet wird, das die Spinndüse über einen Abzugskanal des Garnbildungselements und schließlich über einen Auslass verlässt.The present invention relates to a spinning station of an air spinning machine with a spinneret, which serves to produce a yarn from a fiber composite supplied to the spinneret, wherein the spinneret has an inlet for the fiber structure, an internal swirl chamber, a projecting into the swirl chamber and a discharge channel for the yarn Yarn-forming element and an outlet for the yarn produced in the interior of the spinneret. In addition, a method for operating an air spinning machine with at least one spinning station is proposed, wherein the spinning station has at least one spinneret, wherein the spinneret is supplied during operation of the spinning station via an inlet a fiber strand, and wherein the fiber structure in the region of a in a vortex chamber of Spinning nozzle protruding Garnbildungselements receives a rotation, so that from the fiber strand, a yarn is formed, which leaves the spinneret via a discharge channel of the Garnbildelements and finally via an outlet.
Luftspinnmaschinen mit entsprechenden Spinnstellen sind im Stand der Technik bekannt und dienen der Herstellung eines Garns aus einem länglichen Faserverband. Die äußeren Fasern des Faserverbands werden hierbei mit Hilfe einer durch die Luftdüsen innerhalb der Wirbelkammer erzeugten Wirbelluftströmung im Bereich einer Fasereintrittsöffnung des Garnbildungselements um die innenliegenden Kernfasern gewunden und bilden schließlich die für die gewünschte Festigkeit des Garns ausschlaggebenden Umwindefasern. Hierdurch entsteht ein Garn mit einer echten Drehung, welches schließlich über einen Abzugskanal aus der Wirbelkammer abgeführt und z. B. auf eine Hülse aufgewickelt werden kann.Air-jet spinning machines with corresponding spinning stations are known in the art and serve to produce a yarn from an elongate fiber structure. In this case, the outer fibers of the fiber composite are wound around the inner core fibers in the area of a fiber inlet opening of the yarn formation element with the aid of a vortex air flow generated by the air nozzles within the vortex chamber and finally form the binder fibers which determine the desired strength of the yarn. This creates a yarn with a true rotation, which finally dissipated via a vent channel from the vortex chamber and z. B. can be wound on a sleeve.
Generell ist im Sinne der Erfindung unter dem Begriff Garn also ein Faserverband zu verstehen, bei dem zumindest ein Teil der Fasern um einen innenliegenden Kern gewunden sind. Umfasst ist somit ein Garn im herkömmlichen Sinne, das beispielsweise mit Hilfe einer Webmaschine zu einem Stoff verarbeitet werden kann. Ebenso betrifft die Erfindung jedoch auch Luftspinnmaschinen, mit deren Hilfe sogenanntes Vorgarn (andere Bezeichnung: Lunte) hergestellt werden kann. Diese Art Garn zeichnet sich dadurch aus, dass sie trotz einer gewissen Festigkeit, die ausreicht, um das Garn zu einer nachfolgenden Textilmaschine zu transportieren, noch immer verzugsfähig ist. Das Vorgarn kann also mit Hilfe einer Verzugseinrichtung, z. B. dem Streckwerk, einer das Vorgarn verarbeitenden Textilmaschine, beispielsweise einer Ringspinnmaschine, verzogen werden, bevor es endgültig versponnen wird.Generally, in the context of the invention, the term yarn is thus understood to mean a fiber structure in which at least some of the fibers are around an inner fiber Core are twisted. Thus, a yarn is included in the traditional sense, which can be processed into a fabric, for example with the aid of a weaving machine. However, the invention also relates to air spinning machines, with the help of so-called roving (other name: Lunte) can be produced. This type of yarn is characterized by the fact that, despite a certain strength, which is sufficient to transport the yarn to a subsequent textile machine, it is still delayable. The roving can thus with the help of a defaulting device, z. As the drafting system, a roving processing textile machine, such as a ring spinning machine, are warped before it is finally spun.
Bei der Herstellung von Chemiefasern, beispielsweise Polyester, oder Gemischen aus Natur- und Chemiefasern entstehen Ablagerungen auf der Oberfläche des Garnbildungselements. Die Herstellung von Chemiefasern umfasst eine sogenannte Präparation der Endlosfasern während des Herstellungsprozesses. Dabei wird auf die Endlosfasern ein Präparationsmittel, meist Öle mit verschiedenartigen Zusätzen, aufgebracht, welches eine Behandlung, wie beispielsweise Strecken der Endlosfasern bei hohen Geschwindigkeiten, ermöglicht. Diese Präparationsmittel bleiben teilweise an den Chemiefasern auch in der weiteren Behandlung haften und führen in der Luftspinnmaschine zu Verunreinigungen. Die der Luftspinnmaschine in Form eines Faserverbandes zugeführten Fasern werden in der Regel durch ein Lieferwalzenpaar der Spinndüse zugeführt. Das Lieferwalzenpaar kann einem Ausgangswalzenpaar eines Streckwerks entsprechen. Zur Anwendung kommende Streckwerke dienen einer Verfeinerung des vorgelegten Faserverbandes vor dem Eintritt in die Spinndüse.In the production of man-made fibers, for example polyesters, or blends of natural and man-made fibers, deposits are formed on the surface of the yarn-forming element. The production of man-made fibers involves a so-called preparation of the continuous fibers during the manufacturing process. In this case, a spin finish, usually oils with various additives, applied to the continuous fibers, which allows a treatment, such as stretching the continuous fibers at high speeds. Some of these preparation agents remain attached to the man-made fibers in the further treatment and lead to impurities in the air-spinning machine. The fibers supplied to the air-spinning machine in the form of a fiber structure are usually supplied to the spinneret through a pair of delivery rollers. The delivery roller pair may correspond to an output roller pair of a drafting system. Used drafting systems serve to refine the submitted fiber structure before entering the spinneret.
Im Eintrittsbereich der Spinndüse ist in der Regel ein Faserführungselement angeordnet, über welches der Faserverband in die Spinndüse und schließlich in den Bereich des Garnbildungselements geführt wird. Als Garnbildungselemente werden mehrheitlich Spindeln mit einem innenliegenden Abzugskanal verwendet. An der Spitze des Garnbildungselementes wird durch die Gehäusewandung der Spinndüse Druckluft derart eingebracht, dass sich die genannte rotierende Wirbelluftströmung ergibt. Dies führt dazu, dass aus dem das Faserführungselement verlassenden Faserverband einzelne außenliegende Fasern abgetrennt und über die Spitze des Garnbildungselementes umgeschlagen werden. Im weiteren Verlauf rotieren diese herausgelösten Fasern auf der Oberfläche des Garnbildungselementes. In der Folge werden durch die Vorwärtsbewegung der innenliegenden Kernfasern des Faserverbandes die rotierenden Fasern um die Kernfasern gewunden und dadurch das Garn gebildet. Durch die Bewegung der einzelnen Fasern über die Oberfläche des Garnbildungselementes bilden sich auf dem Garnbildungselement jedoch auch Ablagerungen aufgrund der Anhaftungen an den Fasern aus dem Herstellungsprozess. Ablagerungen auf dem Garnbildungselement können auch durch beschädigte Fasern hervorgerufen werden. Ablagerungen können aus denselben Gründen auch auf der Oberfläche des Spinndüseninnenraumes entstehen. Diese Anhaftungen führen zu einer Verschlechterung der Oberflächenbeschaffenheit des Garnbildungselementes und verursachen eine Verschlechterung der hergestellten Garnqualität. Eine regelmäßige Reinigung der betroffenen Oberflächen ist daher notwendig, um eine gleichbleibende Qualität der gesponnen Garne aufrechterhalten zu können.In the entry region of the spinneret, a fiber guide element is usually arranged, via which the fiber structure is guided into the spinneret and finally into the area of the yarn-forming element. As Garnbildungselemente majority spindles with an internal exhaust duct used. At the tip of the Garnbildungselementes compressed air is introduced through the housing wall of the spinneret such that the said rotating vortex air flow results. As a result, individual outer fibers are separated from the fiber strand leaving the fiber guiding element and are turned over via the tip of the yarn-forming element. In the further course, these removed fibers rotate on the surface of the yarn-forming element. As a result, by the forward movement of the inner core fibers of the fiber structure, the rotating fibers are wound around the core fibers, thereby forming the yarn. Due to the movement of the individual fibers over the surface of the yarn-forming element, however, deposits on the yarn-forming element are also formed due to the adhesion to the fibers from the production process. Deposits on the yarn-forming element can also be caused by damaged fibers. Deposits may also arise on the surface of the spinneret interior for the same reasons. These adhesions lead to a deterioration of the surface quality of the Garnbildungselementes and cause deterioration of the yarn quality produced. Regular cleaning of the affected surfaces is therefore necessary in order to maintain a consistent quality of the spun yarns.
Die Reinigung der Oberflächen des Garnbildungselementes kann manuell durch einen periodischen Ausbau des Garnbildungselementes erfolgen, was jedoch zu einem nicht unerheblichen Wartungsaufwand, verbunden mit einem entsprechenden Betriebsausfall, führt.The cleaning of the surfaces of the Garnbildungselementes can be done manually by a periodic removal of Garnbildungselementes, but this leads to a considerable maintenance, combined with a corresponding breakdown.
Die
Eine weitere Ausführung einer Reinigung des Garnbildungselementes offenbart die
Nachteilig an den offenbarten Reinigungssystemen ist, dass die Dosierung des Additivs von der Druckluftversorgung der Luftdüsen abhängt. Eine hiervon unabhängige Dosierung scheidet somit aus.A disadvantage of the disclosed cleaning systems is that the dosage of the additive depends on the compressed air supply of the air nozzles. A dosage independent thereof is thus eliminated.
Das gleiche Problem tritt prinzipiell auch auf, wenn Additiv dem Faserverband zugeführt werden soll, um die Eigenschaften des daraus hergestellten Garns, beispielsweise im Hinblick auf dessen Haarigkeit oder Festigkeit, zu verbessern, da die Dosierung in diesem Fall besonders genau regelbar sein sollte, um zu verhindern, dass auf einzelne Faserverbandabschnitte mehr oder weniger als die vorgegebenen Additivsollmenge aufgebracht wird.The same problem also occurs in principle if additive is to be added to the fiber structure in order to improve the properties of the yarn produced therefrom, for example with regard to its hairiness or strength, since the dosage in this case should be particularly precisely controllable in order to prevent more or less than the predetermined additive set amount from being applied to individual fiber strand sections.
Aufgabe der vorliegenden Erfindung ist es daher, eine Lösung vorzuschlagen, die eine besonders gleichbleibende und exakt zu regulierende Versorgung der Spinndüse mit Additiv ermöglicht.Object of the present invention is therefore to propose a solution that allows a particularly consistent and precisely regulated supply of the spinneret with additive.
Die Aufgabe wird gelöst durch eine Spinnstelle einer Luftspinnmaschine und ein Verfahren mit den Merkmalen der unabhängigen Patentansprüche.The object is achieved by a spinning station of an air-spinning machine and a method having the features of the independent patent claims.
Erfindungsgemäß zeichnet sich die Spinnstelle dadurch aus, dass ihr eine Additivversorgung zugeordnet ist, die ausgebildet ist, die Spinndüse mit einem Additiv zu versorgen. Die Additivversorgung umfasst zumindest eine Additivversorgungsleitung, die mit einem Additivkanal des Garnbildungselements strömungstechnisch in Verbindung steht. Der Additivkanal mündet in die Wirbelkammer der Spinndüse oder den Abzugskanal des Garnbildungselements, so dass ein über die Additivversorgungsleitung in den Additivkanal eingebrachtes Additiv in den Abzugskanal und/oder die Wirbelkammer eingebracht werden kann.According to the invention, the spinning station is characterized in that it is associated with an additive supply, which is designed to supply the spinneret with an additive. The additive supply comprises at least one additive supply line, which communicates fluidically with an additive channel of the yarn formation element. The additive channel opens into the swirl chamber of the spinneret or the discharge channel of Garnbildungselements, so that a via the additive supply line in the additive channel introduced additive can be introduced into the extraction duct and / or the vortex chamber.
Im Ergebnis kann das Additiv nun unabhängig von der Druckluftversorgung der Luftdüsen der Wirbelkammer eingebracht werden, so dass eine besondere genau zu dosierende Additivzufuhr ermöglicht wird. Vorzugsweise endet der Additivkanal des Garnbildungselements im Bereich des Abzugskanals, d. h., er weist eine Additivaustrittsöffnung auf, die sich im Bereich der Innenwandung des Abzugskanals befindet. Die gedachte Verlängerung einer Mittelachse des Additivkanals schneidet sich in diesem Fall vorzugsweise mit der Mittelachse des Abzugskanals. Insbesondere ist es von Vorteil, wenn der Additivkanal im Bereich einer Spitze bzw. einer Fasereintrittsöffnung des Garnbildungselements in den Abzugskanal mündet und schräg gegen die Eintrittsrichtung der Fasern in den Abzugskanal gerichtet ist, wobei der Abzugskanal und der Additivkanal (zumindest teilweise) als Bohrung ausgebildet sein können. Als Additive können im Übrigen flüssige oder auch feste Substanzen, bzw. Mischungen derselben, zum Einsatz kommen, wobei Wasser oder eine wässrige Lösung bevorzugt wird.As a result, the additive can now be introduced independently of the compressed air supply of the air nozzles of the swirl chamber, so that a special precisely metered additive supply is made possible. Preferably, the additive channel of the Garnbildungselements ends in the region of the take-off channel, d. h., He has an additive outlet opening, which is located in the region of the inner wall of the outlet channel. The imaginary extension of a central axis of the additive channel in this case preferably intersects with the center axis of the exhaust duct. In particular, it is advantageous if the additive channel in the region of a tip or a fiber inlet opening of the Garnbildungselements opens into the discharge channel and is directed obliquely against the direction of entry of the fibers in the discharge channel, the discharge channel and the additive channel (at least partially) may be formed as a bore can. In addition, liquid or even solid substances, or mixtures thereof, can be used as additives, water or an aqueous solution being preferred.
Um die Menge des abgegebenen Additivs regeln zu können, ist es zudem von Vorteil, wenn die Additivversorgung, insbesondere die Additivversorgungsleitung, eine Dosiereinrichtung zur Regelung des Volumenstroms und/oder des Massenstroms des über den Additivkanal abgegebenen Additivs aufweist. Bei der Dosiereinrichtung handelt es sich beispielsweise um ein Ventil oder eine Dosierpumpe, welche manuell oder mit Hilfe einer Steuerung regelbar sind, um die Menge des das Ventil, respektive die Dosierpumpe passierenden Additivs ändern zu können, wobei das Ventil, respektive die Dosierpumpe beispielsweise in die Additivversorgungsleitung integriert ist. Alternativ oder zusätzlich ließe sich die Additivzufuhr in quantitativer Hinsicht auch durch die Anpassung des in der Wirbelkammer vorherrschenden Unterdrucks steuern, wobei der Unterdruck durch eine mit der Wirbelkammer in Verbindung stehende Unterdruckquelle erzeugt wird.In order to be able to regulate the amount of additive delivered, it is also advantageous if the additive supply, in particular the additive supply line, has a metering device for controlling the volume flow and / or the mass flow of the additive discharged via the additive channel. The metering device is, for example, a valve or a metering pump which can be controlled manually or with the aid of a controller in order to be able to change the quantity of the additive passing through the valve or the metering pump, the valve, or the metering pump, for example, into the Additive supply line is integrated. Alternatively or additionally, the additive supply could also be controlled in quantitative terms by the adaptation of the prevailing in the vortex chamber vacuum, the negative pressure is generated by an associated with the vortex chamber vacuum source.
Auch ist es von Vorteil, wenn der Additivkanal zumindest abschnittsweise innerhalb des Garnbildungselements verläuft. Beispielsweise wäre es denkbar, den Additivkanal als Bohrung auszubilden, die das Garnbildungselement bzw. dessen vorderen, die Fasereintrittsöffnung aufweisenden, Bereich von außen bis hin zum Abzugskanal durchdringt (wobei generell auch mehr als ein Additivkanal vorhanden sein könnte). Ebenso kann der Additivkanal aus mehreren in Verbindung stehenden Abschnitten bestehen. Beispielsweise wäre es denkbar, dass das Garnbildungselement einen Grundkörper und eine am Grundkörper fixierte und die genannte Fasereintrittsöffnung aufweisende Spitze aufweist. Der Abzugskanal könnte sich in diesem Fall aus einer innerhalb der Spitze angeordneten Bohrung und einem weiteren Abschnitt zusammensetzen, der innerhalb des Grundkörpers verläuft (wobei auch dieser Abschnitt durch eine Bohrung gebildet sein könnte). Im Übergangsbereich zwischen Grundkörper und Spitze könnte sich in diesem Fall ein den Abzugskanal umgebender, vorzugsweise ringförmig ausgebildeter, Übergangsabschnitt des Additivkanals befinden, in den sowohl der Kanalabschnitt der Spitze als auch der Kanalabschnitt des Grundkörpers münden. Dies hätte schließlich den Vorteil, dass beide Kanalabschnitte unabhängig von einem Verdrehen der Spitze um die Mittelachse des Abzugskanals stets über den Übergangsabschnitt in Verbindung stehen.It is also advantageous if the additive channel extends at least in sections within the yarn formation element. For example, it would be conceivable to design the additive channel as a bore, which penetrates the yarn formation element or its front region having the fiber inlet opening from the outside to the extraction channel (although generally more than one additive channel could also be present). Likewise, the additive channel may consist of several communicating sections. For example, it would be conceivable for the yarn formation element to have a main body and a tip fixed to the main body and having said fiber inlet opening. In this case, the withdrawal channel could be composed of a bore arranged within the tip and a further segment extending inside the basic body (whereby this segment could also be formed by a bore). In the transition region between the base body and the tip, a transition section of the additive channel surrounding the outlet channel, preferably a ring-shaped transition section, into which both the channel section of the tip and the channel section of the base body terminate may be located. This would finally have the advantage that both channel sections are always independent of a rotation of the tip about the central axis of the discharge channel via the transition section in conjunction.
Ferner bringt es Vorteile mit sich, wenn der Additivkanal mit dem Abzugskanal (insbesondere deren jeweilige Mittelachsen) zumindest abschnittsweise einen Winkel einschließt, dessen Betrag zwischen 3° und 12°, vorzugsweise zwischen 5° und 10°, liegt. Der Additivkanal ist zudem vorzugsweise gegen die Transportrichtung des Garns innerhalb des Abzugskanals gerichtet, so dass das Additiv (schräg) gegen die genannte Transportrichtung in den Abzugskanal abgegeben wird und hierbei mit den Fasern des zugeführten Faserverbands bzw. Garns in Kontakt gelangt. Schließlich ist es von Vorteil, wenn der Additivkanal und der Abzugskanal zumindest abschnittsweise in einer gemeinsamen Ebene liegen.Furthermore, it brings advantages when the additive channel with the withdrawal channel (in particular their respective central axes) at least partially encloses an angle whose amount is between 3 ° and 12 °, preferably between 5 ° and 10 °. The additive channel is also preferably directed against the transport direction of the yarn within the discharge channel, so that the additive is discharged (obliquely) against the said transport direction in the discharge channel and in this case comes into contact with the fibers of the supplied fiber assembly or yarn. Finally, it is advantageous if the additive channel and the withdrawal channel are at least partially in a common plane.
Vorteilhaft ist es, wenn der Additivkanal im Bereich einer Fasereintrittsöffnung des Garnbildungselements in den Abzugskanal mündet. In diesem Fall gelangt das Additiv auch in den Bereich der äußeren Oberfläche des Garnbildungselements und kann damit der Reinigung dieser Fläche dienen (der Transport des Additivs vom Abzugskanal und damit vom Inneren des Garnbildungselements in den Bereich seiner äußeren Oberfläche erfolgt in diesem Fall durch den in der Wirbelkammer herrschenden Unterdruck, der beim Betrieb der Spinndüse durch einen Luftabzug aus der Wirbelkammer entsteht). Insbesondere sollte der Additivkanal derart in den Abzugskanal münden, dass der resultierende Verbindungsbereich von Additivkanal und Abzugskanal weniger als 10 mm, bevorzugt weniger als 5 mm, von der Fasereintrittsöffnung des Garnbildungselements entfernt ist.It is advantageous if the additive channel opens into the extraction channel in the region of a fiber inlet opening of the yarn formation element. In this case, the additive also reaches into the region of the outer surface of the Garnbildelements and thus the cleaning of this surface are used (the transport of the additive from the discharge channel and thus from the interior of the Garnbildungselements in the region of its outer surface in this case by the in the Vortex chamber prevailing negative pressure, which arises during operation of the spinneret by an air outlet from the vortex chamber). In particular, the additive channel should open into the withdrawal channel in such a way that the resulting connection region of additive channel and withdrawal channel is less than 10 mm, preferably less than 5 mm, away from the fiber entry opening of the yarn formation element.
Ebenso bringt es Vorteile mit sich, wenn der Additivkanal zumindest teilweise innerhalb einer den Abzugskanal umgebenden Wandung des Garnbildungselements verläuft und in eine Austrittsöffnung mündet, die sich im Bereich einer äußeren Oberfläche des Garnbildungselements befindet. Der Additivkanal geht in diesem Fall nicht in den Abzugskanal über. Vielmehr befindet sich die genannte Austrittsöffnung vorzugsweise im außen liegenden Bereich des die Fasereintrittsöffnung aufweisenden Frontbereichs des Garnbildungselements bzw. dessen Spitze. Das Additiv wird in diesem Fall direkt auf den Bereich der äußeren Oberfläche des Garnbildungselements aufgebracht, der bei der Garnherstellung mit den im Bereich der Fasereintrittsöffnung des Garnbildungselements um den inneren Kern des zugeführten Faserverbands herumgeschlungenen Faserenden in Kontakt kommt. Das Additiv kommt damit auch in diesem Fall mit den Fasern und der äußeren Oberfläche des Garnbildungselements in Kontakt, so dass je nach Menge des zugegebenen Additivs eine Verbesserung der Garnqualität und/oder eine Reinigung des Garnbildungselements erfolgt.Likewise, there are advantages if the additive channel extends at least partially within a wall of the yarn formation element surrounding the withdrawal channel and opens into an exit opening which is located in the region of an outer surface of the yarn formation element. In this case, the additive channel does not go into the withdrawal channel. Rather, the said outlet opening is preferably located in the outer region of the fiber inlet opening having the front region of the Garnbildelements or its tip. In this case, the additive is applied directly to the area of the outer surface of the yarn-forming element, which in the yarn production comes into contact with the fiber ends wrapped around the inner core of the fiber-bundle in the region of the fiber inlet opening of the yarn-forming element. The additive thus also comes into contact with the fibers and the outer surface of the yarn-forming element in this case, so that, depending on the amount of additive added, the yarn quality is improved and / or the yarn-forming element is cleaned.
Vorteilhaft ist es zudem, wenn der Additivkanal zusätzlich mit einer Druckluftleitung der Spinnstelle in Fluidverbindung steht, so dass über die Druckluftleitung eingebrachte Druckluft über den Additivkanal in den Abzugskanal und/oder die Wirbelkammer eingebracht werden kann. Das Einbringen von Druckluft ist insbesondere während eines Anspinnvorgangs an der entsprechenden Spinnstelle von Vorteil, bei dem ein Garnende entgegen der im Spinnbetrieb vorherrschenden Transportrichtung über den Auslass der Spinndüse in den Abzugskanal eingebracht wird. Die über den Additivkanal eingebrachte Druckluft erzeugt in diesem Fall eine Luftströmung, die innerhalb des Abzugskanals in Richtung dessen Fasereintrittsöffnung gerichtet ist. Das eingebrachte, vorzugsweise von einer Spule kommende, Garnende wird während des Anspinnvorgangs von der genannten Luftströmung erfasst und durch den Abzugskanal transportiert. Nach Verlassen des Abzugskanals über die Fasereintrittsöffnung kann das Garnende schließlich über den Einlass der Spinndüse nach außen transportiert werden (wobei auch dies durch die genannte Luftströmung unterstützt wird) und mit einem Endabschnitt eines Faserverbands verbunden werden. Schließlich werden die zuvor deaktivierten Luftdüsen der Spinndüse wieder mit Druckluft beaufschlagt und die Druckluftzufuhr über den Additivkanal unterbunden, so dass das mit dem Faserverband verbundene Garnende und damit auch der Faserverband wieder in Transportrichtung in die Wirbelkammer gelangt und der Spinnbetrieb wieder aufgenommen werden kann.It is also advantageous if the additive channel is additionally in fluid communication with a compressed air line of the spinning station, so that via the compressed air line introduced compressed air can be introduced via the additive channel in the discharge channel and / or the vortex chamber. The introduction of compressed air is particularly advantageous during a piecing operation at the corresponding spinning station, in which a yarn end is introduced into the extraction channel via the outlet of the spinneret in the opposite direction to the transport direction prevailing in the spinning operation. The introduced via the additive channel compressed air generated in this case, an air flow, which is directed within the discharge duct in the direction of the fiber inlet opening. The introduced, preferably coming from a bobbin yarn end is detected during the piecing of the said air flow and transported through the discharge channel. After exiting the exhaust duct via the fiber entrance opening, the yarn end may finally be conveyed outwardly through the inlet of the spinneret (this being also assisted by said air flow) and connected to an end portion of a fiber composite. Finally, the previously deactivated air nozzles of the spinneret are again supplied with compressed air and the compressed air supply via the additive channel suppressed, so that the connected to the fiber structure Garnende and thus the fiber structure again comes in the transport direction in the vortex chamber and the spinning operation can be resumed.
Besonders vorteilhaft ist es, wenn der Druckluftleitung und/oder der Additivversorgungsleitung wenigstens ein Ventil zugeordnet ist, welches zwei unterschiedliche Ventilstellungen einnehmen kann, wobei der Additivkanal in Abhängigkeit der Ventilstellung entweder mit der Druckluftleitung oder der Additivversorgungsleitung strömungstechnisch in Verbindung steht. Während die erste Stellung im Verlauf des beschriebenen Anspinnvorgangs gewählt werden kann, kann der Spinndüse in der zweiten Stellung Additiv zugeführt werden, wobei dies während des dem Anspinnvorgang folgenden Spinnbetriebs von Vorteil ist. Das Ventil könnte beispielsweise manuell betätigbar sein.It is particularly advantageous if the compressed-air line and / or the additive supply line is assigned at least one valve which can assume two different valve positions, wherein the additive channel is in fluid communication with either the compressed-air line or the additive-supply line depending on the valve position. While the first position may be selected in the course of the piecing operation described, the spinneret can be supplied with additive in the second position, this being advantageous during the spinning operation following the piecing process. The valve could be manually operated, for example.
Ebenso ist es äußert vorteilhaft, wenn das Ventil mit einer Steuerung in Verbindung steht, die ausgebildet ist, das Ventil während eines Spinnbetriebs der Spinnstelle zumindest zeitweise in einer ersten Ventilstellung zu halten, in der der Additivkanal mit der Additivversorgungsleitung strömungstechnisch in Verbindung steht. Ebenso sollte die Steuerung ausgebildet sein, das Ventil während eines Anspinnbetriebs der Spinnstelle zumindest zeitweise in einer zweiten Ventilstellung zu halten, in der der Additivkanal mit der Druckluftleitung strömungstechnisch in Verbindung steht. Die Ventilstellung wird in diesem Fall automatisch von der Steuerung gewählt, so dass Additiv der Spinndüse nur dann zugeführt wird, wenn kein Anspinnvorgang durchgeführt wird und umgekehrt.Likewise, it is extremely advantageous if the valve is connected to a controller is, which is designed to hold the valve during a spinning operation of the spinning station at least temporarily in a first valve position, in which the additive channel communicates fluidically with the additive supply line. Likewise, the controller should be designed to hold the valve during a piecing operation of the spinning station at least temporarily in a second valve position, in which the additive channel communicates fluidly with the compressed air line. The valve position is automatically selected by the controller in this case, so that additive is supplied to the spinneret only when no piecing is performed and vice versa.
Das erfindungsgemäße Verfahren zeichnet sich dadurch aus, dass der Spinndüse der entsprechenden Luftspinnmaschine während des Betriebs der Spinnstelle zumindest zeitweise ein Additiv mit Hilfe einer Additivversorgung zugeführt wird, wobei das zugeführte Additiv über einen Additivkanal des Garnbildungselements in den Abzugskanal und/oder die Wirbelkammer abgegeben wird. Hinsichtlich möglicher körperlicher Merkmale der Luftspinnmaschine bzw. deren Komponenten wird auf die bisherige bzw. nachfolgende Beschreibung verwiesen, wobei das Verfahren bei einer Luftspinnmaschine zum Einsatz kommen kann, die ein oder mehrere der entsprechenden Merkmale aufweisen kann. Insbesondere können je nach Anwendungsfall unterschiedliche Additive zum Einsatz kommen, wobei auch hier auf die restliche Beschreibung verwiesen wird. In jedem Fall wird das Additiv gemäß vorliegender Erfindung unabhängig von der während des Spinnbetriebs über die Luftdüsen der jeweiligen Spinndüse eingebrachten Druckluft in die Spinndüse eingebracht, so dass eine vom Luftdruck der genannten Druckluft unabhängige Dosierung des Additivs möglich ist.The method according to the invention is characterized in that the spinneret of the corresponding air-spinning machine is at least temporarily supplied with an additive with the aid of an additive supply during operation of the spinning station, the added additive being discharged via an additive channel of the yarn-forming element into the exhaust duct and / or the swirl chamber. With regard to possible physical features of the air-jet spinning machine or its components, reference is made to the previous or following description, wherein the method can be used in an air-spinning machine, which may have one or more of the corresponding features. In particular, depending on the application, different additives can be used, reference being made to the remainder of the description. In any case, the additive according to the present invention is introduced into the spinneret independently of the compressed air introduced during the spinning operation via the air nozzles of the respective spinneret, so that a metering of the additive independent of the air pressure of said compressed air is possible.
Besonders vorteilhaft ist es, wenn über den Additivkanal während eines Spinnbetriebs der Spinnstelle zumindest zeitweise Additiv über den Additivkanal abgegeben wird, und wenn während eines Anspinnbetriebs der Spinnstelle zumindest zeitweise Druckluft über den Additivkanal abgegeben wird. Der Additivkanal wird in diesem Fall entweder für die Additivabgabe oder eine Druckluftabgabe verwendet, wobei die Druckluftabgabe eine Rückführung eines Garnendes vom Auslass der Spinndüse in einen dem Einlass derselben vorgeordneten Bereich ermöglicht. Insbesondere ist es von Vorteil, wenn je nach Betriebsmodus der Spinnstelle entweder Additiv oder Druckluft über den Additivkanal abgegeben wird.It is particularly advantageous if additive is dispensed via the additive channel via the additive channel during a spinning operation of the spinning station at least temporarily, and if during a piecing operation of the spinning station at least temporarily compressed air is discharged via the additive channel. The additive channel is in this case used either for the additive delivery or a compressed air delivery, wherein the compressed air delivery allows a return of a yarn end from the outlet of the spinneret in a region upstream of the inlet thereof. In particular, it is advantageous if, depending on the operating mode of the spinning station, either additive or compressed air is discharged via the additive channel.
Vorteilhaft ist es, wenn der Additivkanal mit einer Additivversorgungsleitung und einer Druckluftleitung strömungstechnisch in Verbindung steht. Zudem sollte der Additivversorgungsleitung und/oder der Druckluftleitung zumindest ein Ventil zugeordnet sein, wobei das Ventil mit Hilfe einer Steuerung während eines Spinnbetriebs der Spinndüse zumindest zeitweise in einer ersten Ventilstellung gehalten wird, in der der Additivkanal mit der Additivversorgungsleitung strömungstechnisch in Verbindung steht. Alternativ hierzu sollte das Ventil mit Hilfe der Steuerung während eines Anspinnbetriebs der Spinndüse zumindest zeitweise in einer zweiten Ventilstellung gehalten werden, in der der Additivkanal mit einer Druckluftleitung strömungstechnisch in Verbindung steht. Die Stellung des entsprechenden Ventils wird also durch die Steuerung geregelt, so dass ein automatischer Betrieb des Ventils möglich ist.It is advantageous if the additive channel is in fluid communication with an additive supply line and a compressed air line. In addition, the additive supply line and / or the compressed air line should be assigned at least one valve, wherein the valve is held by means of a control during a spinning operation of the spinneret at least temporarily in a first valve position in which the additive channel is fluidically connected to the additive supply line. Alternatively, the valve should be held by means of the controller during a piecing operation of the spinneret at least temporarily in a second valve position, in which the additive channel is in fluid communication with a compressed air line. The position of the corresponding valve is thus regulated by the controller, so that an automatic operation of the valve is possible.
Besonders vorteilhaft ist es, wenn der Volumen- und/oder Massenstrom des über den Additivkanal abgegebenen Additivs mit Hilfe einer Dosiereinrichtung geregelt wird. Bei der Dosiereinrichtung kann es sich beispielsweise um ein Ventil oder eine Dosierpumpe handeln, wobei ein Ventil zusätzlich zwischen mehreren Stellungen bewegbar ist. Hinsichtlich weiterer möglicher Details der Dosiereinrichtung wird auf die restliche Beschreibung verwiesen.It is particularly advantageous if the volume and / or mass flow of the additive discharged via the additive channel is regulated with the aid of a metering device. The metering device may be, for example, a valve or a metering pump, wherein a valve is additionally movable between a plurality of positions. With regard to further possible details of the metering device, reference is made to the rest of the description.
Ebenso ist es vorteilhaft, wenn der Volumenstrom des abgegebenen Additivs zumindest zeitweise einen Betrag zwischen 0,001 ml/min und 7,0 ml/min, bevorzugt zwischen 0,01 ml/min und 5,0 ml/min, besonders bevorzugt zwischen 0,05 und 3,0 ml/min, aufweist und/oder wenn der Massenstrom des zugeführten Additivs zumindest zeitweise einen Betrag zwischen 0,001 g/min und 7,0 g/min, bevorzugt zwischen 0,01 g/min und 5,0 g/min, besonders bevorzugt zwischen 0,05 g/min und 3,0 g/min, aufweist. Während höhere Werte (während eines Reinigungsbetriebs) eine Reinigung des Garnbildungselements der Spinndüse erlauben, sind kleinere Werte im Spinnbetrieb von Vorteil, in dem das Additiv lediglich der Verbesserung der Garneigenschaften dient. Eine die Dosierung des Additivs bewirkende Dosiereinrichtung sollte daher eine Regulierung des Volumen- bzw. Massenstroms über die genannten Spannbreiten erlauben, um die einzelnen Spinndüsen sowohl im Normalbetrieb als auch im Reinigungsbetrieb betreiben zu können.It is likewise advantageous if the volume flow of the additive delivered at least temporarily amounts to between 0.001 ml / min and 7.0 ml / min, preferably between 0.01 ml / min and 5.0 ml / min, particularly preferably between 0.05 and 3.0 ml / min, and / or when the mass flow of the added additive at least temporarily an amount between 0.001 g / min and 7.0 g / min, preferably between 0.01 g / min and 5.0 g / min, more preferably between 0.05 g / min and 3.0 g / min. While higher values (during a cleaning operation) allow cleaning of the yarn forming element of the spinneret, smaller values in spinning operation are advantageous in that the additive merely serves to improve the yarn properties. A metering device which effects the metering of the additive should therefore permit a regulation of the volume or mass flow over the stated span widths in order to be able to operate the individual spinnerets both in normal operation and in cleaning operation.
Vorteilhaft ist es in diesem Zusammenhang, wenn der Volumenstrom (bzw. Massenstrom) des zugeführten Additivs während des Normalbetriebs der Luftspinnmaschine einen Betrag zwischen 0,001 ml/min (bzw. g/min) und 1,5 ml/min (bzw. g/min), bevorzugt zwischen 0,01 ml/min (bzw. g/min) und 1,0 ml/min (bzw. g/min) aufweist, und wenn der Volumenstrom (bzw. Massenstrom) des zugeführten Additivs während eines Reinigungsbetriebs der Luftspinnmaschine einen Betrag zwischen 2,0 ml/min (bzw. g/min) und 7,0 ml/min (bzw. g/min), bevorzugt zwischen 3,0 ml/min (bzw. g/min) und 7,0 ml/min (bzw. g/min), aufweist.It is advantageous in this context if the volume flow (or mass flow) of the added additive during normal operation of the air-spinning machine an amount between 0.001 ml / min (or g / min) and 1.5 ml / min (or g / min ), preferably between 0.01 ml / min (or g / min) and 1.0 ml / min (or g / min), and when the volume flow (or mass flow) of the added additive during a cleaning operation of the air-jet spinning machine an amount between 2.0 ml / min (or g / min) and 7.0 ml / min (or g / min), preferably between 3.0 ml / min (or g / min) and 7.0 ml / min (or g / min).
Der genaue Wert kann in Abhängigkeit der Eigenschaften des Faserverbands und/oder dessen Zuführgeschwindigkeit in die Spinnstelle und/oder der Abzugsgeschwindigkeit des Garns aus der Spinnstelle gewählt werden und kann daher je nach Anwendungsfall schwanken. Ebenso kann der Wert in Abhängigkeit der Dauer des Reinigungsbetriebs bzw. der Dauer des Normalbetriebs zwischen zwei Reinigungsabschnitten gewählt werden.The exact value can be selected depending on the properties of the fiber composite and / or its feed rate into the spinning station and / or the withdrawal speed of the yarn from the spinning station and can therefore vary depending on the application. Likewise, the value can be selected as a function of the duration of the cleaning operation or the duration of the normal operation between two cleaning sections.
Weitere Vorteile der Erfindung sind in den nachfolgenden Ausführungsbeispielen beschrieben. Es zeigen:
-
Figur 1 - einen Ausschnitt einer Spinnstelle einer Luftspinnmaschine,
-
Figur 2 - einen weiteren Ausschnitt einer Spinnstelle einer Luftspinnmaschine,
-
Figur 3 - ein Garnbildungselement einer erfindungsgemäßen Spinnstelle,
-
Figur 4 - eine weitere Ausführungsform eines Garnbildungselements einer erfindungsgemäßen Spinnstelle,
-
Figur 5 - eine weitere Ausführungsform eines Garnbildungselements einer erfindungsgemäßen Spinnstelle, und
-
Figur 6 - eine Prinzipskizze eines Ausschnitts einer Luftspinnmaschine mit einer erfindungsgemäßen Spinnstelle.
- FIG. 1
- a section of a spinning station of an air-spinning machine,
- FIG. 2
- another section of a spinning station of an air-spinning machine,
- FIG. 3
- a yarn-forming element of a spinning station according to the invention,
- FIG. 4
- a further embodiment of a yarn-forming element of a spinning station according to the invention,
- FIG. 5
- a further embodiment of a Garnbildungselements a spinning station according to the invention, and
- FIG. 6
- a schematic diagram of a section of an air-spinning machine with a spinning unit according to the invention.
Darüber hinaus kann die Luftspinnmaschine ein der Spinndüse 1 nachgeordnetes und zwei Abzugswalzen 26 aufweisendes Abzugswalzenpaar sowie eine dem Abzugswalzenpaar nachgeschaltete Spulvorrichtung 27 zum Aufspulen des die Spinnstelle verlassenden Garns 2 auf eine Hülse umfassen. Die erfindungsgemäße Spinnstelle muss nicht zwangsweise ein Streckwerk 20 aufweisen. Auch ist das Abzugswalzenpaar nicht zwingend notwendig.In addition, the air-spinning machine, a pair of delivery rollers downstream of the
Die gezeigte Spinnstelle arbeitet generell nach einem Luftspinnverfahren. Zur Bildung des Garns 2 wird der Faserverband 3 über ein, mit einer den genannten Einlass 4 bildenden Eintrittsöffnung versehenes, Faserführungselement 18 in die Wirbelkammer 5 der Spinndüse 1 geführt. Dort erhält es eine Drehung, d. h. mindestens ein Teil der freien Faserenden des Faserverbands 3 wird von einer Wirbelluftströmung, die durch entsprechend in einer die Wirbelkammer 5 umgebenden Wirbelkammerwandung angeordnete Luftdüsen 22 erzeugt wird, erfasst (wobei die Luftdüsen 22 über einen Luftversorgungskanal 23 in Verbindung stehen können, der wiederum mit einer Druckluftleitung 25 verbunden ist, die über eine Druckluftversorgung 29 mit Druckluft gespeist wird; vergleiche auch
Ein Teil der Fasern wird hierbei aus dem Faserverband 3 zumindest ein Stück weit herausgezogen und um den Frontbereich eines in die Wirbelkammer 5 ragenden Garnbildungselements 6 gewunden. Dadurch, dass der Faserverband 3 durch eine Fasereintrittsöffnung 32 des Garnbildungselements 6 über einen innerhalb des Garnbildungselements 6 angeordneten Abzugskanal 24 aus der Wirbelkammer 5 und schließlich über einen Auslass 7 aus der Spinndüse 1 abgezogen wird, werden schließlich auch die freien Faserenden in Richtung der Fasereintrittsöffnung 32 gezogen und schlingen sich dabei als sogenannte Umwindefasern um die zentral verlaufenden Kernfasern - resultierend in einem die gewünschte Drehung aufweisenden Garn 2. Die über die Luftdüsen 22 eingebrachte Druckluft verlässt die Spinndüse 1 schließlich über den Abzugskanal 24 sowie einen eventuell vorhandene Luftauslass 21, der bei Bedarf mit einer Unterdruckquelle verbunden sein kann.A part of the fibers is in this case pulled out of the
Generell sei an dieser Stelle klargestellt, dass es sich bei dem hergestellten Garn 2 grundsätzlich um einen beliebigen Faserverband 3 handeln kann, der sich dadurch auszeichnet, dass ein außenliegender Teil der Fasern (sogenannte Umwindefasern) um einen inneren, vorzugsweise ungedrehten oder bei Bedarf ebenfalls gedrehten Teil der Fasern, herumgeschlungen ist, um dem Garn 2 die gewünschte Festigkeit zu verleihen. Umfasst ist von der Erfindung also auch eine Luftspinnmaschine, mit deren Hilfe sich sogenanntes Vorgarn herstellen lässt. Bei Vorgarn handelt es sich um ein Garn 2 mit einem relativ geringen Anteil an Umwindefasern, bzw. um ein Garn 2, bei dem die Umwindefasern relativ locker um den inneren Kern geschlungen sind, so dass das Garn 2 verzugsfähig bleibt. Dies ist dann entscheidend, wenn das hergestellte Garn 2 an einer nachfolgenden Textilmaschine (beispielsweise einer Ringspinnmaschine) nochmals mit Hilfe eines Streckwerks verzogen werden soll bzw. muss, um entsprechend weiterverarbeitet werden zu können.In general, it should be made clear at this point that the
Im Hinblick auf die Luftdüsen 22 sei an dieser Stelle zudem rein vorsorglich erwähnt, dass diese in der Regel so ausgerichtet sein sollten, dass die austretenden Luftstrahlen gleichgerichtet sind, um gemeinsam eine gleichgerichtete Luftströmung mit einem Drehsinn zu erzeugen. Vorzugsweise sind die einzelnen Luftdüsen 22 hierbei rotationssymmetrisch zueinander angeordnet und münden tangential in die Wirbelkammer 5.With regard to the
Erfindungsgemäß ist der Spinnstelle nun eine in
Darüber hinaus ist vorgesehen, dass sich der genannte Additivkanal 10 zumindest teilweise innerhalb des Garnbildungselements 6 erstreckt, wobei der Additivkanal 10 beispielsweise als Bohrung vorliegen kann. Wie diesbezüglich
Alternativ zu der in
Eine weitere Ausführungsform eines möglichen Garnbildungselements 6 ist in
Abschließend zeigt
Ferner ist ein Additivspeicher 9 vorhanden, der über eine Additivversorgungsleitung 14 strömungstechnisch mit dem in den
Darüber hinaus kann eine weitere (in
Um festlegen zu können, ob der Additivkanal 10 mit Druckluft oder Additiv beschickt wird, ist es schließlich sinnvoll, die genannte weitere Druckluftleitung 25 und die Additivversorgungsleitung 14 mit einem Ventil 11 auszurüsten, welches je nach Ventilstellung eine Abgabe von Additiv oder Druckluft in die gemeinsame, vom Ventil 11 abzweigende, Zuführleitung 31 erlaubt (wobei die Zuführleitung 31 in diesem Fall mit dem genannten Anschluss 30 verbunden ist). Die Festlegung der Ventilstellung erfolgt schließlich vorzugsweise mit Hilfe der Steuerung 16.In order to be able to determine whether the
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 oder in unterschiedlichen Ausführungsbeispielen dargestellt und beschrieben sind.The present invention is not limited to the illustrated and described embodiments. Variations within the scope of the claims are also possible as any combination of the features described, even if they are shown and described in different parts of the description or the claims or in different embodiments.
- 1.1.
- Spinndüsespinneret
- 2.Second
- Garnyarn
- 3.Third
- Faserverbandfiber structure
- 4.4th
- Einlassinlet
- 5.5th
- Wirbelkammerswirl chamber
- 6.6th
- GarnbildungselementGarnbildungselement
- 7.7th
- Auslassoutlet
- 8.8th.
- Additivversorgungadditive supply
- 9.9th
- Additivspeicheradditive storage
- 10.10th
- Additivkanaladditive channel
- 11.11th
- VentilValve
- 12.12th
- den Abzugskanal umgebende Wandung des Garnbildungselementsthe discharge channel surrounding wall of Garnbildungselements
- 13.13th
- äußere Oberfläche des Garnbildungselementsouter surface of the yarn formation element
- 14.14th
- AdditivversorgungsleitungAdditive supply line
- 15.15th
- Austrittsöffnung des AdditivkanalsOutlet opening of the additive channel
- 16.16th
- Steuerungcontrol
- 17.17th
- Dosiereinrichtungmetering
- 18.18th
- FaserführungselementFiber guide element
- 19.19th
- StreckwerkswalzeDrafting system roller
- 20.20th
- Streckwerkdrafting system
- 21.21st
- Luftauslassair outlet
- 22.22nd
- Luftdüseair nozzle
- 23.23rd
- LuftversorgungskanalAir supply channel
- 24.24th
- Abzugskanalculvert
- 25.25th
- DruckluftleitungCompressed air line
- 26.26th
- Abzugswalzeoff roll
- 27.27th
- Spulvorrichtungspooling device
- 28.28th
- RiemchenStrappy
- 29.29th
- DruckluftversorgungAir Supply
- 30.30th
- Anschlussconnection
- 31.31st
- Zuführleitungfeed
- 32.32nd
- FasereintrittsöffnungFiber inlet opening
- 33.33rd
- Grundkörper des GarnbildungselementsBasic body of Garnbildungselements
- 34.34th
- Spitze des GarnbildungselementsTip of the yarn formation element
- 35.35th
- Kanalchannel
- αα
- Winkel zwischen dem Abzugskanal und dem AdditivkanalAngle between the extraction channel and the additive channel
Claims (15)
dadurch gekennzeichnet,
characterized
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH00716/14A CH709615A1 (en) | 2014-05-13 | 2014-05-13 | Spinning unit of an air spinning machine and operation of such. |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2944713A1 true EP2944713A1 (en) | 2015-11-18 |
EP2944713B1 EP2944713B1 (en) | 2018-07-18 |
Family
ID=53540566
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15167155.9A Not-in-force EP2944713B1 (en) | 2014-05-13 | 2015-05-11 | Spinning unit for an air jet spinning machine and its operation |
Country Status (5)
Country | Link |
---|---|
US (1) | US9670600B2 (en) |
EP (1) | EP2944713B1 (en) |
JP (1) | JP6566550B2 (en) |
CN (1) | CN105088433B (en) |
CH (1) | CH709615A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102015120437A1 (en) * | 2015-11-25 | 2017-06-01 | Maschinenfabrik Rieter Ag | Air-jet spinning machine and method for operating the same |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH709953A1 (en) * | 2014-07-30 | 2016-02-15 | Rieter Ag Maschf | Method for operating an air spinning machine. |
BE1023666B1 (en) * | 2015-11-10 | 2017-06-09 | Gilbos N.V. | IMPROVED JET AND METHOD |
CN105951225B (en) * | 2016-06-22 | 2018-01-16 | 陕西宝成航空仪表有限责任公司 | Auto cleaning system for fully-automatic intelligent spinning machine nozzle |
CH712663A1 (en) * | 2016-07-14 | 2018-01-15 | Rieter Ag Maschf | Process for processing a strand-like fiber composite and roving machine. |
JP2018178298A (en) * | 2017-04-11 | 2018-11-15 | 村田機械株式会社 | Spinning machine |
CN110904544A (en) * | 2019-12-20 | 2020-03-24 | 江西莱富纺织有限公司 | Open-end spinning device with low yarn breakage rate |
DE102020108257A1 (en) * | 2020-03-25 | 2021-09-30 | Saurer Spinning Solutions Gmbh & Co. Kg | Apparatus for separating fibers and spinning equipment comprising such a device |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2704005A1 (en) * | 1993-04-16 | 1994-10-21 | Vanhelle Michel | Process and apparatus for the spinning of spun fibre yarn |
US6513315B1 (en) * | 1996-10-09 | 2003-02-04 | Verhaeghe Industries | Method, device and installation for the continuous displacement processing of threads |
DE102004044345A1 (en) * | 2004-09-09 | 2006-03-16 | Wilhelm Stahlecker Gmbh | Air-jet spinning device |
JP2008095208A (en) | 2006-10-06 | 2008-04-24 | Murata Mach Ltd | Air spinning device |
EP2450478A2 (en) | 2010-11-05 | 2012-05-09 | Murata Machinery, Ltd. | Spinning machine |
EP2620532A1 (en) * | 2012-01-27 | 2013-07-31 | Maschinenfabrik Rieter Ag | Air jet spinning machine with a cleaning organ and method for cleaning the eddy chamber of an air jet spinning machine |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3783596A (en) * | 1971-05-26 | 1974-01-08 | Du Pont | Jet application of textile finish to moving threadlines |
NL150527B (en) * | 1974-08-21 | 1976-08-16 | Hollandse Signaalapparaten Bv | FALSE TWIST AND THE METHOD FOR MANUFACTURING TWISTLESS OR ALMOST TWISTLESS YARN AND FOR APPLYING DYES INTO TWISTED YARN USING THIS FALSE TWIST. |
JPH0465535A (en) * | 1990-07-04 | 1992-03-02 | Murata Mach Ltd | Spinning machine |
DE60009402T2 (en) * | 1999-07-28 | 2005-03-10 | Murata Kikai K.K. | Spinning device and spinning process |
DE10311826A1 (en) * | 2003-03-13 | 2004-09-23 | Wilhelm Stahlecker Gmbh | Yarn spinner, using staple fiber slivers, has an eddy chamber for the drawn sliver with an air extraction channel and a drawing unit cleaning channel, both connected to a common underpressure source |
JP2008510891A (en) | 2004-08-20 | 2008-04-10 | マシーネンファブリク リーター アクチェンゲゼルシャフト | Spindle with injector passage and method for yarn splicing in an air jet spinning machine |
CN101280478B (en) * | 2008-05-21 | 2010-06-09 | 东华大学 | Vortex spinning device |
DE102009034206A1 (en) * | 2009-07-17 | 2011-01-27 | Maschinenfabrik Rieter Ag | Component for an air jet spinning device |
JP2013067893A (en) * | 2011-09-21 | 2013-04-18 | Murata Mach Ltd | Spinning machine and method of producing spun yarn |
US9290863B2 (en) * | 2013-02-13 | 2016-03-22 | Maschinenfabrik Rieter Ag | Spinning unit of an air-jet spinning machine |
-
2014
- 2014-05-13 CH CH00716/14A patent/CH709615A1/en not_active Application Discontinuation
-
2015
- 2015-05-08 JP JP2015095744A patent/JP6566550B2/en not_active Expired - Fee Related
- 2015-05-11 CN CN201510236093.2A patent/CN105088433B/en not_active Expired - Fee Related
- 2015-05-11 EP EP15167155.9A patent/EP2944713B1/en not_active Not-in-force
- 2015-05-13 US US14/710,814 patent/US9670600B2/en not_active Expired - Fee Related
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2704005A1 (en) * | 1993-04-16 | 1994-10-21 | Vanhelle Michel | Process and apparatus for the spinning of spun fibre yarn |
US6513315B1 (en) * | 1996-10-09 | 2003-02-04 | Verhaeghe Industries | Method, device and installation for the continuous displacement processing of threads |
DE102004044345A1 (en) * | 2004-09-09 | 2006-03-16 | Wilhelm Stahlecker Gmbh | Air-jet spinning device |
JP2008095208A (en) | 2006-10-06 | 2008-04-24 | Murata Mach Ltd | Air spinning device |
EP2450478A2 (en) | 2010-11-05 | 2012-05-09 | Murata Machinery, Ltd. | Spinning machine |
EP2620532A1 (en) * | 2012-01-27 | 2013-07-31 | Maschinenfabrik Rieter Ag | Air jet spinning machine with a cleaning organ and method for cleaning the eddy chamber of an air jet spinning machine |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102015120437A1 (en) * | 2015-11-25 | 2017-06-01 | Maschinenfabrik Rieter Ag | Air-jet spinning machine and method for operating the same |
US10370779B2 (en) | 2015-11-25 | 2019-08-06 | Maschinenfabrik Rieter Ag | Air spinning machine along with a method for operating the same |
Also Published As
Publication number | Publication date |
---|---|
CN105088433A (en) | 2015-11-25 |
EP2944713B1 (en) | 2018-07-18 |
CN105088433B (en) | 2019-01-04 |
CH709615A1 (en) | 2015-11-13 |
US20150329994A1 (en) | 2015-11-19 |
JP2015218427A (en) | 2015-12-07 |
JP6566550B2 (en) | 2019-08-28 |
US9670600B2 (en) | 2017-06-06 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP2944713B1 (en) | Spinning unit for an air jet spinning machine and its operation | |
EP2927353B1 (en) | Air jet spinning machine and method for the operation of an air jet spinning machine | |
EP2927355B1 (en) | Spinning unit of an air jet spinning machine along with a top frame for the fixing on a spinning nozzle of an air jet spinning machine | |
EP2927354B1 (en) | Air jet spinning machine comprising a spinning unit and a method for operating an air jet spinning machine | |
EP2767625B1 (en) | Spinning unit of a spinning machine | |
EP2767624B1 (en) | Spinning unit of an air-jet spinning machine | |
EP2980285B1 (en) | Spinning station of a jet spinning machine and operation of same | |
EP2955255B1 (en) | Air spinning machine and method for operating an air spinning machine | |
EP2726655B1 (en) | Preparatory spinning machine for producing a roving and method for piecing a fibre sliver | |
EP3148913B1 (en) | Method for operating a textile machine, and textile machine for producing rovings | |
EP3449048A1 (en) | Air jet spinning machine and method for producing a yarn | |
EP2772572B1 (en) | Spinning station for producing a yarn | |
WO2008101580A1 (en) | Air nozzle assembly having a joining apparatus | |
EP3181741A1 (en) | Air jet spinning machine and method for operating the same | |
DE102016119237A1 (en) | Air spinning machine | |
DE102015108706A1 (en) | Spinning a Luftspinnmaschine and method for operating the same | |
CH707560A1 (en) | Spinning unit for use in air-jet spinning machine for spinning plastics/cotton fiber composite to produce yarn, has feeding tool for feeding additive to fiber composite and provided between delivery rollers and end of fiber guide element | |
EP3464691B1 (en) | Yarn forming element for a pre-spinning machine and pre-spinning machine equipped therewith | |
DE102014112360A1 (en) | Garnbildungselement for a spinneret of an air spinning machine, air-jet spinning machine and method for operating such | |
EP1328671B1 (en) | False twist texturing machine | |
LU501576B1 (en) | Air-jet spinning device and method for surface treatment within an air-jet spinning device | |
DE4311272A1 (en) | Device for reducing the nappiness of fibre yarns on the running thread | |
EP4015682A1 (en) | Work station of an air spinning machine and yarn guide element | |
CH707561A1 (en) | Spinning station of air jet spinning machine for spinning fiber strand into yarn, has pressurized air supply circuit with pressurized air supply line that supply the additive with dosage pumped by metering pump |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
AX | Request for extension of the european patent |
Extension state: BA ME |
|
17P | Request for examination filed |
Effective date: 20160518 |
|
RBV | Designated contracting states (corrected) |
Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: GRANT OF PATENT IS INTENDED |
|
INTG | Intention to grant announced |
Effective date: 20180502 |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE PATENT HAS BEEN GRANTED |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D Free format text: LANGUAGE OF EP DOCUMENT: GERMAN |
|
REG | Reference to a national code |
Ref country code: AT Ref legal event code: REF Ref document number: 1019476 Country of ref document: AT Kind code of ref document: T Effective date: 20180815 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R096 Ref document number: 502015005094 Country of ref document: DE |
|
REG | Reference to a national code |
Ref country code: NL Ref legal event code: MP Effective date: 20180718 |
|
REG | Reference to a national code |
Ref country code: LT Ref legal event code: MG4D |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180718 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180718 Ref country code: PL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180718 Ref country code: IS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20181118 Ref country code: BG Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20181018 Ref country code: NO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20181018 Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20181019 Ref country code: FI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180718 Ref country code: RS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180718 Ref country code: LT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180718 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: HR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180718 Ref country code: AL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180718 Ref country code: LV Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180718 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R097 Ref document number: 502015005094 Country of ref document: DE |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: RO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180718 Ref country code: CZ Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180718 Ref country code: ES Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180718 Ref country code: EE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180718 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180718 Ref country code: DK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180718 Ref country code: SM Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180718 |
|
26N | No opposition filed |
Effective date: 20190423 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IT Payment date: 20190531 Year of fee payment: 5 Ref country code: DE Payment date: 20190529 Year of fee payment: 5 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180718 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20190511 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20190531 Ref country code: MC Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180718 Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20190531 |
|
REG | Reference to a national code |
Ref country code: BE Ref legal event code: MM Effective date: 20190531 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20190511 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: TR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180718 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20190511 Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20190511 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20190531 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: PT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20181118 Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20190531 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 502015005094 Country of ref document: DE |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: CY Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180718 Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20201201 |
|
REG | Reference to a national code |
Ref country code: AT Ref legal event code: MM01 Ref document number: 1019476 Country of ref document: AT Kind code of ref document: T Effective date: 20200511 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180718 Ref country code: HU Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO Effective date: 20150511 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20200511 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20200511 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180718 |