EP0485328B1 - System for airjet texturing at least one multifilament yarn - Google Patents

System for airjet texturing at least one multifilament yarn Download PDF

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Publication number
EP0485328B1
EP0485328B1 EP91810785A EP91810785A EP0485328B1 EP 0485328 B1 EP0485328 B1 EP 0485328B1 EP 91810785 A EP91810785 A EP 91810785A EP 91810785 A EP91810785 A EP 91810785A EP 0485328 B1 EP0485328 B1 EP 0485328B1
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EP
European Patent Office
Prior art keywords
bore
yarn
guide body
guide
axis
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Expired - Lifetime
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EP91810785A
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German (de)
French (fr)
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EP0485328A1 (en
Inventor
Christian Simmen
Kurt Klesel
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Heberlein AG
Heberlein and Co AG
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Heberlein and Co AG
Heberlein Maschinenfabrik AG
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Publication of EP0485328A1 publication Critical patent/EP0485328A1/en
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    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/22—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
    • D02G3/36—Cored or coated yarns or threads
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
    • D02G1/16—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using jets or streams of turbulent gases, e.g. air, steam
    • D02G1/161—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using jets or streams of turbulent gases, e.g. air, steam yarn crimping air jets

Definitions

  • the invention relates to a device for blast texturing of at least one multifilament yarn, with a guide body which has a continuous bore with a conical inlet section and an outlet opening, with a needle body which contains a continuous yarn channel which is approximately coaxially aligned with the bore of the guide body extends with one end into said conical entry section and has a circumferential surface which forms with the wall of the conical entry section a passage gap for a blowing medium which can be introduced into the annular space surrounding the needle body in front of the passage gap, and with one on the exit side of the bore of the Guide body arranged impact body, which is known from the document GB-A-1 592 665.
  • the cohesion of the filaments plays an important role. Yarns with good internal cohesion are not only easier to work with, they also have a higher abrasion resistance in use. This results in a higher utility value for the yarns, e.g. as sewing threads, or the textile fabrics made with the yarns.
  • the inner cohesion of textured multifilament yarns is often referred to as the entanglement level.
  • the textured multifilament yarns have the property that filaments protrude from a thread core part and are formed into loops.
  • the shape and distribution of the from the thread core part core loops are important for the appearance and the textile feel of the products. Although the shape and distribution of the loops are largely determined by the type of yarn and the settings (pressure of the blowing medium and yarn feed and take-off speed into and out of the texturing device), the blowing texturing device also makes an important contribution.
  • a good texturing device should have the ability to distribute the loops evenly and press them against the thread core part.
  • the distribution of the filaments in the yarn structure is also important, for example it is responsible for the uniformity of the color component distribution in yarns that are produced from master yarns with filaments of different colors or with differently colored filaments. Such yarns are typically used to make seat covers. Massages of individual color components are very disruptive in the finished product.
  • An effective blowing texturing device is expected to produce a uniform, compact texture even with a high yarn delivery.
  • the yarn delivery is defined as the ratio of the yarn feed speed into the texturing device to the take-off speed, and is calculated separately for each individual strand of yarn fed to the nozzle.
  • at least two multifilament yarns or skeins are supplied for high-handed yarns, namely a core yarn or stand-up yarn with a transmission from 1.03 to 1.2 and at least one fancy yarn strand with a transmission from 1.2 to 4.
  • the object of the invention is to design the blow texturing device specified at the outset in such a way that the textured yarn emerging from the device has a higher tension than in known blow texturing devices, as a result of which the entanglement level of the yarn is higher, and at the same time an equal mixing of the filaments in the yarn and a more evenly distributed loop structure with loops tied more tightly to the thread core can be achieved.
  • a feed hole for the blowing medium opens into the annular space surrounding the needle body in front of the passage gap at a distance from the axis of the guide body bore.
  • the yarn leaving the exit opening of the guide body is guided out of the axis of the guide body bore by means of a thread guide or on a baffle surface.
  • the running yarn is always deflected in such a way that the yarn remains in a central plane which contains the axis of the guide body bore and the axis of the blowing medium supply bore.
  • the stated object can be achieved by designing the blast texturing device in such a way that a yarn emerging from the outlet opening of the guide body is deflected out of a central plane which defines the axis of the guide body bore and the area center of gravity of the mouth cross section or Mouth cross-sections of one or more blowing medium supply bores opening into said annular space contains which surface center of gravity is at a distance from the axis of the guide body bore.
  • the device according to the invention is characterized in a first embodiment in that a thread guide pin is arranged on the impact body, which deflects a yarn emerging from the outlet opening of the guide body bore and guided around the thread guide pin out of a central plane, which axis the axis of the guide body bore and contains the area center of gravity of the mouth cross section or the mouth cross sections of one or more blowing medium supply holes opening into said annular space, which area center of gravity is at a distance from the axis of the guide body bore.
  • the device according to the invention is characterized in that the impact body has a thread guide groove which deflects a yarn emerging from the outlet opening of the guide body bore and guided through the thread guide groove out of a central plane, which axis the axis of the guide body bore and the center of area of the mouth cross section or contains the mouth cross-sections of one or more blowing medium supply bores opening into said annular space, which area center of gravity is at a distance from the axis of the guide body bore.
  • the device according to the invention is characterized in that the impact body has a cylindrical circumferential surface at least in the region of the outlet opening of the guide body bore and that the axis of this cylindrical circumferential surface with a normal to a central plane, the axis of the guide body bore and the center of area of the mouth cross section or contains the cross-sections of one or more blowing medium supply bores opening into the said annular space, which area center of gravity is at a distance from the axis of the guide body bore, forms an acute angle, for example an angle of 2 to 30 °, so that the impact body deflects a yarn emerging from the outlet opening of the guide body bore and laid around the impact body out of the said central plane.
  • the needle body contains two ends that open into said annular space Blowing medium supply bores, which are arranged symmetrically to one another with respect to the central plane.
  • the device for blast texturing of at least one multifilament yarn has a guide body 1, for example made of ceramic material, which contains a continuous bore with a conical inlet section 2 and an outlet opening 3. Furthermore, the device has a needle body 4 which contains a continuous yarn channel 5 which is aligned coaxially with the bore of the guide body 1.
  • the needle body 4 extends at one end into the conical entry section 2 of the bore of the guide body 1 and has on this end a conical circumferential surface which, with the wall of the conical entry section 2, forms an annular passage gap 6 for a blowing medium, which in the The annular body 7 surrounding the needle body 4 can be inserted in front of the passage gap 6.
  • a baffle 9 is arranged on the exit side of the bore of the guide body 1 and has, for example, the shape of a cylindrical pin.
  • a circumferential recess 10 in the needle body 4 stands with one, not shown Blowing medium connection, eg compressed air connection, in connection.
  • the blowing medium is guided out of the recess 10 into the annular space 7 through preferably two blowing medium supply bores 11 and 12.
  • the area center of gravity A of the cross sections of the mouths of the bores 11 and 12 in the annular space 7 has a distance a of, for example, 3 to 10 mm from the axis of the bore of the guide body 1.
  • the center of area A and the axis of the bore of the guide body 1 determine a central plane M of the device.
  • the yarn channel 5 of the needle body 4 is supplied, for example, with two multifilament yarns to be combined and textured, namely a core yarn F1 and a fancy yarn F2.
  • the core yarn F1 can be wetted by an applicator (not shown), for example with water, immediately before entering the yarn channel 5.
  • the multifilament yarns are blown through the blown medium jacket, which emerges from the passage gap 6. This will swirl the yarns together.
  • the combined yarn is deflected on the impact body 9. It runs around the impact body 9 and then as a textured yarn FT to a thread guide 13.
  • This thread guide 13 is arranged in such a way that the yarn wraps around a circumferential area of the impact body 9 that extends over an obtuse angle ⁇ and then one to the axis of the bore of the guide body 1 parallel plane E penetrates, which goes through the center of area A and is perpendicular to the central plane M.
  • the yarn emerging from the outlet opening 3 of the guide body 1 is deflected out of the center plane M.
  • a tension of the textured yarn leaving the impact body 9 can be achieved FT can be achieved, which is higher than a yarn that remains between the outlet opening 3 and the impact body 9 in the central plane. This increases the yarn's entanglement level.
  • a more equal mixing of the individual filaments and more evenly distributed loops, more tightly bound to the thread core, are achieved.
  • a thread guide pin 14 is arranged on the impact body 9 for deflecting the yarn from the central plane M.
  • the deflection y of the yarn out of the central plane M is at least 0.5 mm, preferably 2 to 8 mm.
  • a textured yarn was produced from a core yarn made of polyester dtex 167f72, which was wetted by a water-carrying applicator before entering the texturing device, and a fancy yarn made of polyester dtex 167f72x2.
  • the withdrawal speed of the textured yarn was 300 m / min.
  • the feed speed of the core yarn was 336 m / min (tradition 12%).
  • the feed speed of the fancy yarn was 555 m / min (tradition 85%).
  • a texturing device as shown in FIGS. 1 to 3 was used, with two air supply bores of 1.41 mm in diameter on a pitch circle with a radius of 8.3 mm.
  • the thread tension in the textured yarn leaving the impact body 9 was 11.5 cN.
  • the textured yarn had one compact structure with many small, evenly distributed loops.
  • the same texturing device was used for comparison purposes, but with only one air supply hole and without the thread guide pin (not according to the invention).
  • the tensile force in the textured yarn leaving the impact body was 7.5 cN.
  • the yarn had a fairly closed structure, but with sometimes larger, unevenly distributed loops.
  • the device according to the invention thus achieved an increase in the thread tension by 50% and at the same time an improvement in the yarn uniformity, which can be estimated at about 25%.
  • FIG. 4 shows, in a view similar to FIG. 2, a modified embodiment of the invention, in which the impact body 9.1 instead of the thread guide pin 14 from FIG. 2 has a groove 15 which the yarn emerging from the outlet opening 3 out of the central plane M. distracts.
  • the impact body 9 again has the shape of a cylindrical pin.
  • the thread guide pin 14 is also omitted here.
  • the axis p of the impact body is inclined at an acute angle ⁇ to a normal n to the center plane M, so that the cylindrical peripheral surface of the impact body 9 deflects the yarn out of the center plane M.
  • the angle ⁇ can be approximately 2 to 30 °.
  • the two feed holes 11 and 12 shown in FIGS. 1 to 3, which are circular in cross section, are preferably used, not only because of their simple shape, but also because of the good effect which is achievable.
  • feed bores with any other cross-sectional shapes, or even just one feed bore or more than two feed bores, are also possible.
  • 6 to 11 show, in views similar to FIG. 3, the mouths of various usable feed bores.
  • the center of gravity A of the muzzle cross section or the muzzle cross sections is also shown in each case, and likewise the central plane M passing through this center of gravity A and the axis of the guide body bore, from which the yarn emerging from the guide body bore is deflected as described.
  • FIG. 6 shows a feed bore 11.1 in the form of a slot curved around the axis of the guide body bore.
  • the slot could also be straight.
  • Fig. 7 shows a feed bore 11.2, which has the shape of a profiled slot.
  • the cross section of this hole consists of two approximately circular sections which are connected to one another by a narrow slot section.
  • FIG. 9 shows, similar to FIG. 3, two feed bores 11.4 and 12.4, which, however, have oval cross-sectional shapes.

Description

Die Erfindung bezieht sich auf eine Einrichtung zum Blastexturieren wenigstens eines Multifilamentgarns, mit einem Leitkörper, der eine durchgehende Bohrung mit einem konischen Eintrittsabschnitt und einer Austrittsöffnung aufweist, mit einem Nadelkörper, der einen durchgehenden, mit der Bohrung des Leitkörpers etwa koaxial ausgerichteten Garnkanal enthält, sich mit einem Ende in den genannten konischen Eintrittsabschnitt erstreckt und eine Umfangsfläche aufweist, welche mit der Wand des konischen Eintrittsabschnittes einen Durchtrittsspalt für ein Blasmedium bildet, das in den den Nadelkörper umgebenden Ringraum vor dem Durchtrittsspalt einführbar ist, und mit einem auf der Austrittsseite der Bohrung des Leitkörpers angeordneten Prallkörper, welche aus der Druckschrift GB-A-1 592 665 bekannt ist.The invention relates to a device for blast texturing of at least one multifilament yarn, with a guide body which has a continuous bore with a conical inlet section and an outlet opening, with a needle body which contains a continuous yarn channel which is approximately coaxially aligned with the bore of the guide body extends with one end into said conical entry section and has a circumferential surface which forms with the wall of the conical entry section a passage gap for a blowing medium which can be introduced into the annular space surrounding the needle body in front of the passage gap, and with one on the exit side of the bore of the Guide body arranged impact body, which is known from the document GB-A-1 592 665.

Bei der Verarbeitung und Verwendung von mit solchen Einrichtungen texturierten Multifilamentgarnen spielt der Zusammenhalt der Filamente untereinander eine wesentliche Rolle. Garne mit einem guten inneren Zusammenhalt sind nicht nur leichter zu verarbeiten, sie haben auch eine höhere Scheuerfestigkeit im Gebrauch. Dadurch ergibt sich ein höherer Gebrauchswert der Garne, z.B. als Nähfäden, oder der mit den Garnen hergestellten textilen Flächengebilde. Der innere Zusammenhalt von texturierten Multifilamentgarnen wird oft auch als Entanglementlevel bezeichnet.When processing and using multifilament yarns textured with such devices, the cohesion of the filaments plays an important role. Yarns with good internal cohesion are not only easier to work with, they also have a higher abrasion resistance in use. This results in a higher utility value for the yarns, e.g. as sewing threads, or the textile fabrics made with the yarns. The inner cohesion of textured multifilament yarns is often referred to as the entanglement level.

Zusätzlich haben die texturierten Multifilamentgarne die Eigenschaft, dass Filamente aus einem Fadenkernteil herausragen und zu Schlingen geformt sind. Die Form und die Verteilung der aus dem Fadenkernteil kernteil herausragenden Schlingen sind für die Erscheinung und den textilen Griff der Erzeugnisse von Bedeutung. Obwohl Form und Verteilung der Schlingen stark durch die Art der vorgelegten Garne und der Einstellungen (Druck des Blasmediums und Garnzulauf- und -abziehgeschwindigkeit in die bzw. aus der Texturiereinrichtung) mitbestimmt sind, leistet auch die Blastexturiereinrichtung einen wesentlichen Beitrag. Eine gute Texturiereinrichtung sollte die Fähigkeit haben, die Schlingen gleichmässig zu verteilen und gedrängt an den Fadenkernteil zu legen.In addition, the textured multifilament yarns have the property that filaments protrude from a thread core part and are formed into loops. The shape and distribution of the from the thread core part core loops are important for the appearance and the textile feel of the products. Although the shape and distribution of the loops are largely determined by the type of yarn and the settings (pressure of the blowing medium and yarn feed and take-off speed into and out of the texturing device), the blowing texturing device also makes an important contribution. A good texturing device should have the ability to distribute the loops evenly and press them against the thread core part.

Die Verteilung der Filamente im Garnverband ist ebenfalls von Bedeutung, sie ist beispielsweise verantwortlich für die Gleichmässigkeit der Farbkomponentenverteilung in Garnen, die aus Vorlagegarnen mit Filamenten verschiedener Farben oder mit unterschiedlich anfärbenden Filamenten erzeugt werden. Solche Garne werden typischerweise zur Herstellung von Sitzbezügen verwendet. Massierungen einzelner Farbkomponenten wirken im Fertigprodukt sehr störend.The distribution of the filaments in the yarn structure is also important, for example it is responsible for the uniformity of the color component distribution in yarns that are produced from master yarns with filaments of different colors or with differently colored filaments. Such yarns are typically used to make seat covers. Massages of individual color components are very disruptive in the finished product.

Von einer effektiv arbeitenden Blastexturiereinrichtung wird erwartet, dass sie auch bei einer hohen Garnüberlieferung eine gleichmässige, kompakte Textur erzeugt. Die Garnüberlieferung ist definiert als das Verhältnis von Garnzulaufgeschwindigkeit in die Texturiereinrichtung zur Abziehgeschwindigkeit, und zwar für jeden einzelnen der Düse zugeleiteten Garnstrang separat berechnet. Typischerweise werden für hochüberlieferte Garne mindestens zwei Multifilamentgarne bzw. Stränge zugeleitet, nämlich ein Coregarn oder Stehergarn mit einer Ueberlieferung von 1,03 bis 1,2 und mindestens ein Effektgarnstrang mit einer Ueberlieferung von 1,2 bis 4.An effective blowing texturing device is expected to produce a uniform, compact texture even with a high yarn delivery. The yarn delivery is defined as the ratio of the yarn feed speed into the texturing device to the take-off speed, and is calculated separately for each individual strand of yarn fed to the nozzle. Typically, at least two multifilament yarns or skeins are supplied for high-handed yarns, namely a core yarn or stand-up yarn with a transmission from 1.03 to 1.2 and at least one fancy yarn strand with a transmission from 1.2 to 4.

Die Aufgabe der Erfindung besteht darin, die eingangs angegebene Blastexturiereinrichtung so auszubilden, dass das aus der Einrichtung austretende texturierte Garn eine höhere Spannung hat als bei bekannten Blastexturiereinrichtugen, wodurch der Entanglementlevel des Garns höher ist, und dass gleichzeitig eine egalere Durchmischung der Filamente im Garn und eine gleichmässiger verteilte Schlingenstruktur mit dichter an den Fadenkern gebundenen Schlingen erreicht werden.The object of the invention is to design the blow texturing device specified at the outset in such a way that the textured yarn emerging from the device has a higher tension than in known blow texturing devices, as a result of which the entanglement level of the yarn is higher, and at the same time an equal mixing of the filaments in the yarn and a more evenly distributed loop structure with loops tied more tightly to the thread core can be achieved.

In den bekannten Blastexturiereinrichtungen, von denen hier ausgegangen wird, z.B. gemäss Figur 3 in GB-A-1 592 665 oder auch gemäss US-A-4 104 770, mündet in den den Nadelkörper umgebenden Ringraum vor dem Durchtrittsspalt im Abstand von der Achse der Leitkörperbohrung eine Zufuhrbohrung für das Blasmedium. Das die Austrittsöffnung des Leitkörpers verlassende Garn wird mittels eines Fadenführers oder an einer Prallkörperoberfläche aus der Achse der Leitkörperbohrung herausgelenkt. Die Umlenkung des laufenden Garns erfolgt dabei stets in der Weise, dass das Garn in einer Mittelebene verbleibt, welche die Achse der Leitkörperbohrung und die Achse der Blasmedium-Zufuhrbohrung enthält.In the known blow texturing devices which are assumed here, e.g. 3 in GB-A-1 592 665 or also according to US-A-4 104 770, a feed hole for the blowing medium opens into the annular space surrounding the needle body in front of the passage gap at a distance from the axis of the guide body bore. The yarn leaving the exit opening of the guide body is guided out of the axis of the guide body bore by means of a thread guide or on a baffle surface. The running yarn is always deflected in such a way that the yarn remains in a central plane which contains the axis of the guide body bore and the axis of the blowing medium supply bore.

Ueberraschend ist nun gefunden worden, dass sich die angegebene Aufgabe lösen lässt, indem die Blastexturiereinrichtung derart ausgebildet wird, dass ein aus der Austrittsöffnung des Leitkörpers austretendes Garn aus einer Mittelebene heraus abgelenkt wird, die die Achse der Leitkörperbohrung und den Flächenschwerpunkt des Mündungsquerschnittes bzw. der Mündungsquerschnitte einer oder mehrerer in den genannten Ringraum mündender Blasmedium-Zufuhrbohrungen enthält, welcher Flächenschwerpunkt von der Achse der Leitkörperbohrung einen Abstand hat.Surprisingly, it has now been found that the stated object can be achieved by designing the blast texturing device in such a way that a yarn emerging from the outlet opening of the guide body is deflected out of a central plane which defines the axis of the guide body bore and the area center of gravity of the mouth cross section or Mouth cross-sections of one or more blowing medium supply bores opening into said annular space contains which surface center of gravity is at a distance from the axis of the guide body bore.

Daher ist die erfindungsgemässe Einrichtung in einer ersten Ausführungsform dadurch gekennzeichnet, dass am Prallkörper ein Fadenleitstift angeordnet ist, der ein aus der Austrittsöffnung der Leitkörperbohrung austretendes und um den Fadenleitstift geführtes Garn aus einer Mittelebene heraus ablenkt, die die Achse der Leitkörperbohrung und den Flächenschwerpunkt des Mündungsquerschnittes bzw. der Mündungsquerschnitte einer oder mehrerer in den genannten Ringraum mündender Blasmedium-Zufuhrbohrungen enthält, welcher Flächenschwerpunkt von der Achse der Leitkörperbohrung einen Abstand hat.Therefore, the device according to the invention is characterized in a first embodiment in that a thread guide pin is arranged on the impact body, which deflects a yarn emerging from the outlet opening of the guide body bore and guided around the thread guide pin out of a central plane, which axis the axis of the guide body bore and contains the area center of gravity of the mouth cross section or the mouth cross sections of one or more blowing medium supply holes opening into said annular space, which area center of gravity is at a distance from the axis of the guide body bore.

In einer anderen Ausführungsform ist die erfindungsgemässe Einrichtung dadurch gekennzeichnet, dass der Prallkörper eine Fadenleitrille aufweist, welche ein aus der Austrittsöffnung der Leitkörperbohrung austretendes und durch die Fadenleitrille geführtes Garn aus einer Mittelebene heraus ablenkt, die die Achse der Leitkörperbohrung und den Flächenschwerpunkt des Mündungsquerschnittes bzw. der Mündungsquerschnitte einer oder mehrerer in den genannten Ringraum mündender Blasmedium-Zufuhrbohrungen enthält, welcher Flächenschwerpunkt von der Achse der Leitkörperbohrung einen Abstand hat.In another embodiment, the device according to the invention is characterized in that the impact body has a thread guide groove which deflects a yarn emerging from the outlet opening of the guide body bore and guided through the thread guide groove out of a central plane, which axis the axis of the guide body bore and the center of area of the mouth cross section or contains the mouth cross-sections of one or more blowing medium supply bores opening into said annular space, which area center of gravity is at a distance from the axis of the guide body bore.

In einer dritten Ausführungsform ist die erfindungsgemässe Einrichtung dadurch gekennzeichnet, dass der Prallkörper zumindest im Bereich der Austrittsöffnung der Leitkörperbohrung eine zylindrische Umfangsfläche aufweist und dass die Achse dieser zylindrischen Umfangsfläche mit einer Normalen zu einer Mittelebene, die die Achse der Leitkörperbohrung und den Flächenschwerpunkt des Mündungsquerschnittes bzw. der Mündungsquerschnitte einer oder mehrerer in den genannten Ringraum mündender Blasmedium-Zufuhrbohrungen enthält, welcher Flächenschwerpunkt von der Achse der Leitkörperbohrung einen Abstand hat, einen spitzen Winkel bildet, z.B. einen Winkel von 2 bis 30°, so dass der Prallkörper ein aus der Austrittsöffnung der Leitkörperbohrung austretendes und um den Prallkörper herumgelegtes Garn aus der genannten Mittelebene heraus ablenkt.In a third embodiment, the device according to the invention is characterized in that the impact body has a cylindrical circumferential surface at least in the region of the outlet opening of the guide body bore and that the axis of this cylindrical circumferential surface with a normal to a central plane, the axis of the guide body bore and the center of area of the mouth cross section or contains the cross-sections of one or more blowing medium supply bores opening into the said annular space, which area center of gravity is at a distance from the axis of the guide body bore, forms an acute angle, for example an angle of 2 to 30 °, so that the impact body deflects a yarn emerging from the outlet opening of the guide body bore and laid around the impact body out of the said central plane.

In bevorzugten Ausführungsformen enthält der Nadelkörper zwei in den genannten Ringraum mündende Blasmedium-Zufuhrbohrungen, die bezüglich der Mittelebene symmetrisch zueinander angeordnet sind.In preferred embodiments, the needle body contains two ends that open into said annular space Blowing medium supply bores, which are arranged symmetrically to one another with respect to the central plane.

Ausführungsbeispiele der Erfindung werden nachstehend anhand der Zeichnungen näher erläutert. In diesen zeigen:

  • Fig. 1 Teile einer Einrichtung zum Blastexturieren schematisch in einem Axialschnitt,
  • Fig. 2 eine Ansicht von rechts in Fig. 1,
  • Fig. 3 einen Schnitt nach der Linie III - III in Fig. 1,
  • Fig. 4 und Fig. 5 in ähnlichen Ansichten wie in Fig. 2 je eine Variante und
  • Fig. 6 bis Fig. 11 in ähnlichen Schnittansichten wie in Fig. 3 je eine andere Variante.
Embodiments of the invention are explained below with reference to the drawings. In these show:
  • 1 parts of a device for blowing texturing schematically in an axial section,
  • 2 is a view from the right in Fig. 1,
  • 3 shows a section along the line III-III in FIG. 1,
  • Fig. 4 and Fig. 5 in views similar to Fig. 2 each a variant and
  • Fig. 6 to Fig. 11 in similar sectional views as in Fig. 3 each have a different variant.

Die Einrichtung zum Blastexturieren wenigstens eines Multifilamentgarns, von der in den Fig. 1 bis 3 Teile schematisch dargestellt sind, besitzt einen beispielsweise aus Keramikmaterial bestehenden Leitkörper 1, der eine durchgehende Bohrung mit einem konischen Eintrittsabschnitt 2 und einer Austrittsöffnung 3 enthält. Weiter besitzt die Einrichtung einen Nadelkörper 4, der einen durchgehenden, mit der Bohrung des Leitkörpers 1 koaxial ausgerichteten Garnkanal 5 enthält. Der Nadelkörper 4 erstreckt sich mit einem Ende in den konischen Eintrittsabschnitt 2 der Bohrung des Leitkörpers 1 hinein und weist auf diesem Ende eine konische Umfangsfläche auf, die mit der Wand des konischen Eintrittsabschnittes 2 einen ringförmigen Durchtrittsspalt 6 für ein Blasmedium bildet, welches in den den Nadelkörper 4 umgebenden Ringraum 7 vor dem Durchtrittsspalt 6 einführbar ist. Auf der Austrittsseite der Bohrung des Leitkörpers 1 ist ein Prallkörper 9 angeordnet, der beispielsweise die Form eines zylindrischen Stiftes hat.The device for blast texturing of at least one multifilament yarn, of which parts are shown schematically in FIGS. 1 to 3, has a guide body 1, for example made of ceramic material, which contains a continuous bore with a conical inlet section 2 and an outlet opening 3. Furthermore, the device has a needle body 4 which contains a continuous yarn channel 5 which is aligned coaxially with the bore of the guide body 1. The needle body 4 extends at one end into the conical entry section 2 of the bore of the guide body 1 and has on this end a conical circumferential surface which, with the wall of the conical entry section 2, forms an annular passage gap 6 for a blowing medium, which in the The annular body 7 surrounding the needle body 4 can be inserted in front of the passage gap 6. A baffle 9 is arranged on the exit side of the bore of the guide body 1 and has, for example, the shape of a cylindrical pin.

Eine in Umfangsrichtung verlaufende Ausnehmung 10 im Nadelkörper 4 steht mit einem nicht dargestellten Blasmediumanschluss, z.B. Druckluftanschluss, in Verbindung. Aus der Ausnehmung 10 wird das Blasmedium durch vorzugsweise zwei Blasmedium-Zufuhrbohrungen 11 und 12 in den Ringraum 7 geführt. Der Flächenschwerpunkt A der Querschnitte der Mündungen der Bohrungen 11 und 12 in den Ringraum 7 hat von der Achse der Bohrung des Leitkörpers 1 einen Abstand a von beispielsweise 3 bis 10 mm. Der Flächenschwerpunkt A und die Achse der Bohrung des Leitkörpers 1 bestimmen eine Mittelebene M der Einrichtung.A circumferential recess 10 in the needle body 4 stands with one, not shown Blowing medium connection, eg compressed air connection, in connection. The blowing medium is guided out of the recess 10 into the annular space 7 through preferably two blowing medium supply bores 11 and 12. The area center of gravity A of the cross sections of the mouths of the bores 11 and 12 in the annular space 7 has a distance a of, for example, 3 to 10 mm from the axis of the bore of the guide body 1. The center of area A and the axis of the bore of the guide body 1 determine a central plane M of the device.

Dem Garnkanal 5 des Nadelkörpers 4 werden beispielsweise zwei miteinander zu kombinierende und zu texturierende Multifilamentgarne zugeführt, nämlich ein Coregarn F1 und ein Effektgarn F2. Das Coregarn F1 kann unmittelbar vor dem Eintritt in den Garnkanal 5 durch einen nicht dargestellten Applikator benetzt werden, beispielsweise mit Wasser. In der Bohrung des Leitkörpers 1 werden die Multifilamentgarne durch den Blasmediummantel angeblasen, der aus dem Durchtrittsspalt 6 austritt. Dadurch werden die Garne miteinander verwirbelt. Das kombinierte Garn wird am Prallkörper 9 abgelenkt. Es läuft um den Prallkörper 9 herum und dann als texturiertes Garn FT zu einem Fadenführer 13. Dieser Fadenführer 13 ist so angeordnet, dass das Garn einen sich über einen stumpfen Winkel α erstreckenden Umfangbereich des Prallkörpers 9 umschlingt und danach eine zur Achse der Bohrung des Leitkörpers 1 parallele Ebene E durchstösst, die durch den Flächenschwerpunkt A geht und zur Mittelebene M senkrecht steht.The yarn channel 5 of the needle body 4 is supplied, for example, with two multifilament yarns to be combined and textured, namely a core yarn F1 and a fancy yarn F2. The core yarn F1 can be wetted by an applicator (not shown), for example with water, immediately before entering the yarn channel 5. In the bore of the guide body 1, the multifilament yarns are blown through the blown medium jacket, which emerges from the passage gap 6. This will swirl the yarns together. The combined yarn is deflected on the impact body 9. It runs around the impact body 9 and then as a textured yarn FT to a thread guide 13. This thread guide 13 is arranged in such a way that the yarn wraps around a circumferential area of the impact body 9 that extends over an obtuse angle α and then one to the axis of the bore of the guide body 1 parallel plane E penetrates, which goes through the center of area A and is perpendicular to the central plane M.

Erfindungsgemäss wird das aus der Austrittsöffnung 3 des Leitkörpers 1 austretende Garn aus der Mittelebene M heraus abgelenkt. Dadurch kann, wenn die Multifilamentgarne F1 und F2 mit Geschwindigkeiten zugeführt werden, welche höher sind als die Abzugsgeschwindigkeit des texturierten Garns FT, eine Spannung des den Prallkörper 9 verlassenden texturierten Garns FT erzielt werden, die höher ist als bei einem Garn, das zwischen der Austrittsöffnung 3 und dem Prallkörper 9 in der Mittelebene verbleibt. Dadurch wird entsprechend der Entanglementlevel des Garns höher. Gleichzeitig werden auch eine egalere Durchmischung der Einzelfilamente und gleichmässiger verteilte, dichter an den Fadenkern gebundene Schlingen erzielt.According to the invention, the yarn emerging from the outlet opening 3 of the guide body 1 is deflected out of the center plane M. As a result, when the multifilament yarns F1 and F2 are fed at speeds which are higher than the take-off speed of the textured yarn FT, a tension of the textured yarn leaving the impact body 9 can be achieved FT can be achieved, which is higher than a yarn that remains between the outlet opening 3 and the impact body 9 in the central plane. This increases the yarn's entanglement level. At the same time, a more equal mixing of the individual filaments and more evenly distributed loops, more tightly bound to the thread core, are achieved.

In der Ausführungsform gemäss den Fig. 1 bis 3 ist für das Ablenken des Garns aus der Mittelebene M heraus ein Fadenleitstift 14 am Prallkörper 9 angeordnet.In the embodiment according to FIGS. 1 to 3, a thread guide pin 14 is arranged on the impact body 9 for deflecting the yarn from the central plane M.

An einer Stelle in einem in Richtung der Achse der Bohrung des Leitkörpers 1 gemessenen Abstand von der Austrittsöffnung 3 von x = 4 bis 12 mm beträgt die Auslenkung y des Garns aus der Mittelebene M heraus wenigstens 0,5 mm, vorzugsweise 2 bis 8 mm.At a point at a distance from the outlet opening 3, measured in the direction of the axis of the bore of the guide body 1, of x = 4 to 12 mm, the deflection y of the yarn out of the central plane M is at least 0.5 mm, preferably 2 to 8 mm.

Beispielexample

Ein texturiertes Garn wurde hergestellt aus einem Coregarn aus Polyester dtex 167f72, das vor dem Eintritt in die Texturiereinrichtung durch einen wasserführenden Applikator benetzt wurde, und einem Effektgarn aus Polyester dtex 167f72x2. Die Abzugsgeschwindigkeit des texturierten Garns betrug 300 m/min. Die Zulaufgeschwindigkeit des Coregarns betrug 336 m/min (Ueberlieferung 12%). Die Zulaufgeschwindigkeit des Effektgarns betrug 555 m/min (Ueberlieferung 85%).A textured yarn was produced from a core yarn made of polyester dtex 167f72, which was wetted by a water-carrying applicator before entering the texturing device, and a fancy yarn made of polyester dtex 167f72x2. The withdrawal speed of the textured yarn was 300 m / min. The feed speed of the core yarn was 336 m / min (tradition 12%). The feed speed of the fancy yarn was 555 m / min (tradition 85%).

In einem ersten Versuch wurde eine Texturiereinrichtung wie in den Fig. 1 bis 3 dargestellt verwendet, mit zwei Luftzufuhrbohrungen von 1,41 mm Durchmesser auf einem Teilkreis mit Radius 8,3 mm. Der Prallkörper 9 und der Fadenleitstift 14 waren so bemessen und angeordnet, dass im Abstand x = 8 mm von der Austrittsöffnung 3 die Garnauslenkung y = 4,5 mm betrug. Bei einem Düsendruck von pe = 10 bar betrug die Fadenzugkraft in dem den Prallkörper 9 verlassenden texturierten Garn 11,5 cN. Das texturierte Garn hatte eine kompakte Struktur mit vielen kleinen, gleichmässig verteilten Schlingen.In a first experiment, a texturing device as shown in FIGS. 1 to 3 was used, with two air supply bores of 1.41 mm in diameter on a pitch circle with a radius of 8.3 mm. The impact body 9 and the thread guide pin 14 were dimensioned and arranged such that the yarn deflection was y = 4.5 mm at a distance x = 8 mm from the outlet opening 3. At a nozzle pressure of pe = 10 bar, the thread tension in the textured yarn leaving the impact body 9 was 11.5 cN. The textured yarn had one compact structure with many small, evenly distributed loops.

In einem zweiten Versuch wurde zu Vergleichszwecken eine gleiche Texturiereinrichtung, aber mit nur einer Luftzufuhrbohrung und ohne den Fadenleitstift (nicht erfindungsgemäss), verwendet. Beim Düsendruck von pe = 10 bar betrug die Zugkraft in dem den Prallkörper verlassenden texturierten Garn 7,5 cN. Das Garn hatte eine ziemlich geschlossene Struktur, aber mit teilweise grösseren, ungleichmässig verteilten Schlingen. Im Vergleich zu dieser Texturiereinrichtung nach dem Stand der Technik wurden also mit der erfindungsgemässen Einrichtung eine Erhöhung der Fadenzugkraft um 50% und gleichzeitig eine Verbesserung der Garngleichmässigkeit erzielt, die mit etwa 25% beziffert werden kann.In a second experiment, the same texturing device was used for comparison purposes, but with only one air supply hole and without the thread guide pin (not according to the invention). At a nozzle pressure of pe = 10 bar, the tensile force in the textured yarn leaving the impact body was 7.5 cN. The yarn had a fairly closed structure, but with sometimes larger, unevenly distributed loops. In comparison to this texturing device according to the prior art, the device according to the invention thus achieved an increase in the thread tension by 50% and at the same time an improvement in the yarn uniformity, which can be estimated at about 25%.

Die Fig. 4 zeigt in einer ähnlichen Ansicht wie Fig. 2 eine abgewandelte Ausführungsform der Erfindung, in welcher der Prallkörper 9.1 anstelle des Fadenleitstiftes 14 von Fig. 2 eine Rille 15 aufweist, die das aus der Austrittsöffnung 3 austretende Garn aus der Mittelebene M heraus ablenkt.FIG. 4 shows, in a view similar to FIG. 2, a modified embodiment of the invention, in which the impact body 9.1 instead of the thread guide pin 14 from FIG. 2 has a groove 15 which the yarn emerging from the outlet opening 3 out of the central plane M. distracts.

Die Fig. 5 zeigt eine weitere Ausführungsform, in welcher der Prallkörper 9 wieder die Form eines zylindrischen Stiftes hat. Der Fadenleitstift 14 ist auch hier weggelassen. Stattdessen ist die Achse p des Prallkörpers zu einer Normalen n zur Mittelebene M in einem spitzen Winkel β schräg gestellt, so dass die zylindrische Umfangsfläche des Prallkörpers 9 das Garn aus der Mittelebene M heraus ablenkt. Der Winkel β kann etwa 2 bis 30° betragen.5 shows a further embodiment, in which the impact body 9 again has the shape of a cylindrical pin. The thread guide pin 14 is also omitted here. Instead, the axis p of the impact body is inclined at an acute angle β to a normal n to the center plane M, so that the cylindrical peripheral surface of the impact body 9 deflects the yarn out of the center plane M. The angle β can be approximately 2 to 30 °.

Verschiedene Massnahmen zum Ablenken des Garns aus der Mittelebene M heraus, z.B. Fadenleitstift gemäss Fig. 1, 2, Rille gemäss Fig. 4, Schrägstellung des Prallkörpers gemäss Fig. 5 oder auch Verschiebung des Fadenführers 13 aus der Zeichenebene von Fig. 1 heraus, könnten natürlich auch in Kombinationen angewandt werden.Various measures for deflecting the yarn out of the center plane M, for example thread guide pin according to FIG. 1, 2, groove according to FIG. 4, inclined position of the impact body according to FIG. 5 or also displacement of the thread guide 13 from the drawing plane of FIG. 1 out, could of course also be used in combinations.

Für die Zufuhr des Blasmediums in den Ringraum 7 vor dem Durchtrittsspalt 6 werden bevorzugt die beiden in den Fig. 1 bis 3 gezeigten, im Querschnitt kreisrunden Zufuhrbohrungen 11 und 12 verwendet, nicht nur wegen ihrer einfachen Form, sondern auch wegen der guten Wirkung, die damit erzielbar ist.For the supply of the blowing medium into the annular space 7 in front of the passage gap 6, the two feed holes 11 and 12 shown in FIGS. 1 to 3, which are circular in cross section, are preferably used, not only because of their simple shape, but also because of the good effect which is achievable.

Zufuhrbohrungen mit beliebigen anderen Querschnittformen, oder auch nur eine Zufuhrbohrung oder mehr als zwei Zufuhrbohrungen, sind jedoch ebenfalls möglich. Die Fig. 6 bis 11 zeigen in ähnlichen Ansichten wie Fig. 3 die Mündungen verschiedener verwendbarer Zufuhrbohrungen. Der Flächenschwerpunkt A des Mündungsquerschnitts bzw. der Mündungsquerschnitte ist jeweils ebenfalls eingezeichnet, und ebenso die durch diesen Flächenschwerpunkt A und die Achse der Leitkörperbohrung gehende Mittelebene M, aus der das aus der Leitkörperbohrung austretende Garn wie beschrieben abgelenkt wird.However, feed bores with any other cross-sectional shapes, or even just one feed bore or more than two feed bores, are also possible. 6 to 11 show, in views similar to FIG. 3, the mouths of various usable feed bores. The center of gravity A of the muzzle cross section or the muzzle cross sections is also shown in each case, and likewise the central plane M passing through this center of gravity A and the axis of the guide body bore, from which the yarn emerging from the guide body bore is deflected as described.

Die Fig. 6 zeigt eine Zufuhrbohrung 11.1 in Form eines um die Achse der Leitkörperbohrung gekrümmten Schlitzes. Der Schlitz könnte auch gerade sein.6 shows a feed bore 11.1 in the form of a slot curved around the axis of the guide body bore. The slot could also be straight.

Die Fig. 7 zeigt eine Zufuhrbohrung 11.2, die die Form eines profilierten Schlitzes hat. Der Querschnitt dieser Bohrung besteht aus zwei etwa kreisförmigen Abschnitten, die miteinander durch einen engen Schlitzabschnitt verbunden sind.Fig. 7 shows a feed bore 11.2, which has the shape of a profiled slot. The cross section of this hole consists of two approximately circular sections which are connected to one another by a narrow slot section.

Die Fig. 8 zeigt eine einzelne Zufuhrbohrung 11.3 mit kreisförmigem Querschnitt.8 shows a single feed bore 11.3 with a circular cross section.

Die Fig. 9 zeigt ähnlich wie Fig. 3 zwei Zufuhrbohrungen 11.4 und 12.4, die jedoch ovale Querschnittformen haben.FIG. 9 shows, similar to FIG. 3, two feed bores 11.4 and 12.4, which, however, have oval cross-sectional shapes.

Die Fig. 10 zeigt zwei Zufuhrbohrungen 11.5 und 12.5 mit rechteckigen Querschnittsformen.10 shows two feed bores 11.5 and 12.5 with rectangular cross-sectional shapes.

Die Fig. 11 schliesslich zeigt drei unsymmetrisch angeordnete Zufuhrbohrungen 11.6, 11.7 und 12.6.11 finally shows three asymmetrically arranged feed bores 11.6, 11.7 and 12.6.

Claims (8)

  1. Device for jet-bulking of at least one multi-filament yarn, with a guide body (1), which exhibits a through bore with a conical inlet section (2) and an outlet opening (3), with a needle body (4), which contains a through yarn channel (5) approximately coaxially aligned with the bore of guide body (1), extends with one end into said conical inlet section (2) and exhibits a peripheral surface, which, with the wall of conical inlet section (2), forms a passage gap (6) for a blowing medium, which can be introduced into the annular space (7) surrounding needle body (4) in front of passage gap (6), and with an impact body (9) placed on the outlet side of the bore of guide body (1), characterized in that a yarn guide pin (14) is placed on impact body (9) for deflecting a yarn, leaving outlet opening (3) of the guide body bore and guided around the yarn guide pin, from a median plane (M), which contains the axis of the guide body bore and the surface centre of gravity (A) of the mouth cross section or mouth cross sections, respectively, of one or more blowing medium feed bores (11, 12) emptying into said annular space (7), said surface centre of gravity (A) being at a distance (a) from the axis of the guide body bore.
  2. Device for jet-bulking of at least one multi-filament yarn, with a guide body (1), which exhibits a through bore with a conical inlet section (2) and an outlet opening (3), with a needle body (4), which contains a through yarn channel (5) approximately coaxially aligned with the bore of guide body (1), extends with one end into said conical inlet section (2) and exhibits a peripheral surface, which, with the wall of conical inlet section (2), forms a passage gap (6) for a blowing medium, which can be introduced into the annular space (7) surrounding needle body (4) in front of passage gap (6), and with an impact body (9) placed on the outlet side of the bore of guide body (1), characterized in that impact body (9.1) exhibits a yarn guide groove (15), which deflects a yarn, leaving outlet opening (3) of the guide body bore and guided through the yarn guide groove, from a median plane (M), which contains the axis of the guide body bore and the surface centre of gravity (A) of the mouth cross section or mouth cross sections, respectively, of one or more blowing medium feed bores (11, 12) emptying into said annular space (7), said surface centre of gravity (A) being at a distance (a) from the axis of the guide body bore.
  3. Device for jet-bulking of at least one multi-filament yarn, with a guide boy (1), which exhibits a through bore with a conical inlet section (2) and an outlet opening (3), with a needle body (4), which contains a through yarn channel (5) approximately coaxially aligned with the bore of guide body (1), extends with one end into said conical inlet section (2) and exhibits a peripheral surface, which, with the wall of conical inlet section (2), forms a passage gap (6) for a blowing medium, which can be introduced into the annular space (7) surrounding needle body (4) in front of passage gap (6), and with an impact body (9) placed on the outlet side of the bore of guide body (1), characterized in that impact body (9), at least in the area of outlet opening (3) of the guide body bore, exhibits a cylindrical peripheral surface and in that the axis (p) of this cylindrical peripheral surface forms an acute angle (β) with a line (n) perpendicular to a median plane (M), which contains the axis of the guide body bore and the surface centre of gravity (A) of the mouth cross section or mouth cross sections, respectively, of one or more blowing medium feed bores (11, 12) emptying into said annular space (7), said surface centre of gravity (A) being at a distance (a) from the axis of the guide body bore, for example an angle (β) of 2 to 30°, so that impact body (9) deflects a yarn, leaving outlet opening (3) of the guide body bore and guided around the impact body, from said median plane (M).
  4. Device according to one of claims 1 to 3, characterized by a yarn guide element (13) for guiding the yarn, leaving outlet opening (3) of the guide body bore and placed around impact body (9), at a location which is on a side opposite to the axis of the guide body bore, of a plane (E) which is parallel to the axis of the guide body bore, passes through said surface centre of gravity (A), and is perpendicular to median plane (M).
  5. Device according to one of claims 1 to 4, characterized in that at one place in distance (x), measured in the direction of the axis of the guide body bore, from outlet opening (3) of guide body (1) of 4 to 12 mm, the yarn is deflected from median plane (M) by at least 0.5 mm, preferably 2 to 8 mm, by said yarn guide pin (14), or by said yarn guide groove (15), or by said impact body peripheral surface disposed at an acute angle (β) to said line (n) perpendicular to median plane (M), respectively.
  6. Device according to one of claims 1 to 5, characterized in that distance (a) of said surface centre of gravity (A) from the axis of the guide body bore is 3 to 10 mm.
  7. Device according to one of claims 1 to 6, characterized in that needle body (4), contains two, for example, circular, blowing medium feed bores (11, 12), which empty into said annular space (7).
  8. Device according to one of claims 1 to 6, characterized in that needle body (4) contains a slot-shaped blowing medium feed bore (11.1; 11.2), which empties into said annular space (7).
EP91810785A 1990-11-06 1991-10-09 System for airjet texturing at least one multifilament yarn Expired - Lifetime EP0485328B1 (en)

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CH3527/90A CH681989A5 (en) 1990-11-06 1990-11-06
CH3527/90 1990-11-06

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JP (1) JP3126441B2 (en)
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CN106555266B (en) * 2015-03-30 2018-10-09 湖北鑫平纺织有限公司 The method that textile yarn is bulk device carries out bulking processing to textile yarn

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TW208724B (en) 1993-07-01
KR920010051A (en) 1992-06-26
RU2046849C1 (en) 1995-10-27
US5241730A (en) 1993-09-07
JP3126441B2 (en) 2001-01-22
CN1061447A (en) 1992-05-27
KR100212578B1 (en) 1999-08-02
JPH04263636A (en) 1992-09-18
CN1028040C (en) 1995-03-29
DE59103893D1 (en) 1995-01-26
EP0485328A1 (en) 1992-05-13

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