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EP0564400A1 - Apparatus for interlacing multifilament yarns - Google Patents

Apparatus for interlacing multifilament yarns Download PDF

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Publication number
EP0564400A1
EP0564400A1 EP93810193A EP93810193A EP0564400A1 EP 0564400 A1 EP0564400 A1 EP 0564400A1 EP 93810193 A EP93810193 A EP 93810193A EP 93810193 A EP93810193 A EP 93810193A EP 0564400 A1 EP0564400 A1 EP 0564400A1
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EP
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Prior art keywords
yarn channel
wall surface
blowing nozzle
plane
symmetry
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Granted
Application number
EP93810193A
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German (de)
French (fr)
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EP0564400B1 (en
Inventor
Helmut Ritter
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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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    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
    • D02J1/00—Modifying the structure or properties resulting from a particular structure; Modifying, retaining, or restoring the physical form or cross-sectional shape, e.g. by use of dies or squeeze rollers
    • D02J1/08—Interlacing constituent filaments without breakage thereof, e.g. by use of turbulent air streams
    • 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

Definitions

  • the invention relates to a device for interlacing multifilament yarns according to the preamble of claim 1.
  • the object of the invention is to design this device such that, in comparison with known devices, a more uniform interlacing of multifilament yarns, in particular more uniform distances between the successive interlacing points, and a higher interlacing density, measured in interlacing points per meter, can be achieved. Furthermore, depending on the desire, the formation of many and regular strong swirling points per meter or the formation of many and regular weak swirling points per meter should be possible.
  • the object is achieved in the device according to the invention in that at least one of the two wall surfaces in the plane of symmetry is curved in such a way that the distance between the two wall surfaces measured in the plane of symmetry gradually increases from a minimum at the mouth of the blowing nozzle towards both ends of the yarn channel .
  • the energy of the fluid usually air, which is supplied through the blowing nozzle and flows out through the yarn channel, has an adverse effect on the intermingled yarn, for example by dissolving weak intermingling points and thereby making the intermingling irregular and at the same time reducing the intermingling density.
  • the thread tension in the yarn section moving past the mouth of the blowing nozzle is additionally increased by the fluid flowing out toward both ends of the yarn channel, which makes the intermingling more difficult.
  • the increase in the distance between the wall surfaces towards the ends of the yarn channel results when the width of the yarn channel is approximately constant in the preferred manner remains, a corresponding increase in the cross-sectional area of the yarn channel towards the ends.
  • Swirling devices are usually designed in such a way that only an insignificantly higher pressure than the ambient pressure prevailing outside the device forms in the vicinity of the mouth of the blowing nozzle. This is the only way to effectively use the energy gradient in the device.
  • the velocity of the outflowing medium has to be reduced according to the continuity equation by Bernoulli, because the enlargement of the cross-sectional area towards the ends of the yarn channel gradually takes place so that the flow does not detach from the walls of the yarn channel.
  • the width of the yarn channel preferably remains essentially constant over the entire length of the yarn channel. Maintaining the optimal yarn channel width results in a better quality of the interlacing and in particular a high interlacing density.
  • the blast jet divides the filament bundle into two approximately equal-sized bundles when they are pressed against the second wall surface, which only come together again at a certain distance from the blower nozzle to the intermingling nodes that form on both sides of the blower nozzle mouth. A further spreading of the two filament bundles in a yarn channel, which would widen towards the ends, would cause the swirl knots to form further away from the blow nozzle. This would reduce the swirl density, and the distance between the swirl points would be greater.
  • a device for intermingling multifilament yarns has a two-part body with a nozzle body part 1 and an impact body part 2, which is attached to the nozzle body part 1 by means of a screw 3 and two centering pins 4 and 5.
  • a continuous yarn channel 6 extends through the two-part body 1, 2 and is delimited by a first wall surface 7, which is concave in cross section, formed by a groove in the nozzle body part 1, and by a second hollow wall surface 8, formed by a groove in the impact body part 2
  • the two wall surfaces 7 and 8 are each symmetrical with respect to a plane of symmetry which is identical to the sectional plane AA in FIG.
  • the nozzle body part 1 contains a blowing nozzle 9, which opens into the side of the yarn channel approximately in the middle of the length of the yarn channel 6.
  • the mouth of the blowing nozzle 9 lies in the first wall surface 7.
  • the second wall surface 8 lies opposite the opening of the blowing nozzle 9.
  • the axis of the blowing nozzle 9 is expediently in the plane of symmetry A - A.
  • the nozzle body part 1 could also contain more than one blow nozzle.
  • each blowing nozzle could be symmetrical with respect to the plane of symmetry A - A or, for example, two blowing nozzles could also be arranged symmetrically to one another on both sides of the plane A - A.
  • the first wall surface 7 is curved in section with the plane of symmetry AA as shown in FIG. 3 such that the distance between the two wall surfaces 7 and 8 measured in the plane of symmetry AA is at a minimum at the mouth of the blowing nozzle 9 against both Ends of the yarn channel 6 gradually increases.
  • the width of the yarn channel 6 measured perpendicular to the plane of symmetry A - A remains constant over the entire length of the yarn channel, the cross-sectional area of the yarn channel increases from a minimum size at the mouth of the blowing nozzle 9 towards both ends of the yarn channel, for example except for 1.2 to 4 times the minimum size, preferably 1.5 to 2 times the minimum size.
  • the curvature of the first wall surface 7 extends such that the flow of the blowing medium from the mouth of the blowing nozzle 9 to the ends of the yarn channel 6 does not detach from the wall surface 7.
  • the curve has no kinks, which means that the first derivative of the function mentioned is also a continuous function.
  • the curvature of the curve should preferably not change abruptly; in other words, the second derivative of the function represented by the curve should preferably also be a continuous function (without jumps).
  • a continuous threading slot 10 opens laterally into the yarn channel 6 between the two wall surfaces 7 and 8.
  • the threading slot 10 lies between flat surfaces of the nozzle body part 1 and the impact body part 2.
  • the yarn channel 6 ends at both ends in a groove 11 or 12.
  • thread guide pins 13 or 14 are inserted outside the ends of the yarn channel, e.g. Sapphire pins that extend across grooves 11 and 12, respectively.
  • a multifilament yarn M (FIG. 3), which runs through the yarn channel 6 during operation and is swirled by the blowing medium entering the yarn channel 6 from the blowing nozzle 9, is guided very precisely in the yarn channel 6.
  • the thread guide pins have not been shown in FIG. 5.
  • the second wall surface 8 extends beyond the ends of the yarn channel 6 to the outside.
  • FIGS. 4 and 6 differs from that according to FIGS. 1 to 3 and 5 only in that the second wall surface 8.1 is curved on average with the plane of symmetry, so that in the plane of symmetry measured distance between the two wall surfaces 7 and 8.1 towards the ends of the yarn channel 6 increases even more than in FIGS. 1 to 3 and 5.
  • the curvature of the second wall surface 8.1 runs in the same manner as described above for the first wall surface 7 , so that the flow does not separate from the second wall surface 8.1.
  • the first wall surface 7 is approximately V-shaped in cross-section with a rounded transition between the two V-legs
  • FIG. 7 shows an embodiment in which the first wall surface 7.1 is approximately semi-circular in cross-section.
  • the second wall surface 8 or 8.1 is hollow and approximately rectangular in cross section.
  • the second wall surface 8.2 which delimits the yarn channel 6 upwards, is not formed by a groove in the impact body part 2, but simply by a section of the flat underside of the impact body part 2. Also here no threading slot is present between the underside of the impact body part 2 and the top of the nozzle body part 1.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Nonwoven Fabrics (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)

Abstract

The apparatus possesses a body (1, 2) which contains a continuous yarn channel for the run-through of a multifilament yarn (M). The yarn channel is limited by a first wall face (7), in which at least one blowing nozzle (9) opens laterally into the yarn channel, and by a second wall face (8) which is located opposite the mouth of the blowing nozzle (9). At least one of the two wall faces (7) is curved in the longitudinal direction of the yarn channel. As a result, the distance between the two wall faces (7, 8) increases gradually from a minimum at the mouth of the blowing nozzle (9) towards the ends of the yarn channel. This leads to a gradual decrease in the velocity of the blowing medium which flows from the mouth of the blowing nozzle (9) to the two ends of the yarn channel. Even weak interlacing points formed in the multifilament (M) are thus no longer opened up. <IMAGE>

Description

Die Erfindung bezieht sich auf eine Vorrichtung zum Verwirbeln von Multifilamentgarnen gemäss dem Oberbegriff des Patentanspruchs 1.The invention relates to a device for interlacing multifilament yarns according to the preamble of claim 1.

Die Aufgabe der Erfindung besteht darin, diese Vorrichtung derart auszubilden, dass damit im Vergleich mit bekannten Vorrichtungen eine gleichmässigere Verwirbelung von Multifilamentgarnen, insbesondere gleichmässigere Abstände zwischen den aufeinanderfolgenden Verwirbelungsstellen, und eine höhere Verwirbelungsdichte, gemessen in Verwirbelungsstellen pro Meter, erzielt werden können. Ferner soll je nach Wunsch die Bildung vieler und regelmässiger starker Verwirbelungsstellen pro Meter oder die Bildung vieler und regelmässiger schwacher Verwirbelungsstellen pro Meter möglich sein.The object of the invention is to design this device such that, in comparison with known devices, a more uniform interlacing of multifilament yarns, in particular more uniform distances between the successive interlacing points, and a higher interlacing density, measured in interlacing points per meter, can be achieved. Furthermore, depending on the desire, the formation of many and regular strong swirling points per meter or the formation of many and regular weak swirling points per meter should be possible.

Die Aufgabe wird in der erfindungsgemässen Vorrichtung dadurch gelöst, dass wenigstens eine der beiden Wandflächen in der Symmetrieebene derart gekrümmt ist, dass der in der Symmetrieebene gemessene Abstand zwischen den beiden Wandflächen von einem Minimum bei der Mündung der Blasdüse gegen beide Enden des Garnkanals hin allmählich zunimmt.The object is achieved in the device according to the invention in that at least one of the two wall surfaces in the plane of symmetry is curved in such a way that the distance between the two wall surfaces measured in the plane of symmetry gradually increases from a minimum at the mouth of the blowing nozzle towards both ends of the yarn channel .

In bekannten Verwirbelungsvorrichtungen übt die Energie des durch die Blasdüse zugeführten und durch den Garnkanal abströmenden Fluids, zumeist Luft, eine nachteilige Wirkung auf das verwirbelte Garn aus, indem sie zum Beispiel schwache Verwirbelungsstellen wieder auflöst und dadurch die Verwirbelung unregelmässig macht und gleichzeitig die Verwirbelungsdichte herabsetzt. Auch wird die Fadenspannung in dem an der Mündung der Blasdüse vorbeibewegten Garnabschnitt durch das nach beiden Enden des Garnkanals hin abströmende Fluid zusätzlich erhöht, was die Verwirbelung erschwert.In known intermingling devices, the energy of the fluid, usually air, which is supplied through the blowing nozzle and flows out through the yarn channel, has an adverse effect on the intermingled yarn, for example by dissolving weak intermingling points and thereby making the intermingling irregular and at the same time reducing the intermingling density. The thread tension in the yarn section moving past the mouth of the blowing nozzle is additionally increased by the fluid flowing out toward both ends of the yarn channel, which makes the intermingling more difficult.

In der erfindungsgemässen Vorrichtung ergibt sich durch die Vergrösserung des Abstandes zwischen den Wandflächen gegen die Enden des Garnkanals hin, wenn die Breite des Garnkanals in der bevorzugten Weise etwa konstant bleibt, eine entsprechende Vergrösserung der Querschnittsfläche des Garnkanals gegen die Enden hin. Verwirbelungsvorrichtungen werden üblicherweise so ausgelegt, dass sich in der Nähe der Mündung der Blasdüse nur ein unwesentlich höherer Druck als der ausserhalb der Vorrichtung herrschende Umgebungsdruck bildet. Nur so kann das Energiegefälle in der Vorrichtung effektiv genutzt werden. In der erfindungsgemässen Vorrichtung muss daher durch die Vergrösserung der Querschnittsfläche des Garnkanals gegen die Enden hin, da praktisch keine Druckabsenkung mehr möglich ist, nach der Kontinuitätsgleichung von Bernoulli eine Reduktion der Geschwindigkeit des abströmenden Mediums eintreten, weil die Vergrösserung der Querschnittsfläche gegen die Enden des Garnkanals hin allmählich erfolgt, so dass sich die Strömung nicht von den Wänden des Garnkanals ablöst. Die Geschwindigkeit geht in der Energieformel E = 1/2.m.v² im Quadrat ein. Bei Absenkung der Ausströmgeschwindigkeit des Fluids aus dem Garnkanal auf beispielsweise die Hälfte wird somit die schädliche Energie auf einen Viertel reduziert.In the device according to the invention, the increase in the distance between the wall surfaces towards the ends of the yarn channel results when the width of the yarn channel is approximately constant in the preferred manner remains, a corresponding increase in the cross-sectional area of the yarn channel towards the ends. Swirling devices are usually designed in such a way that only an insignificantly higher pressure than the ambient pressure prevailing outside the device forms in the vicinity of the mouth of the blowing nozzle. This is the only way to effectively use the energy gradient in the device. In the device according to the invention, therefore, due to the enlargement of the cross-sectional area of the yarn channel towards the ends, since practically no lowering of pressure is practically no longer possible, the velocity of the outflowing medium has to be reduced according to the continuity equation by Bernoulli, because the enlargement of the cross-sectional area towards the ends of the yarn channel gradually takes place so that the flow does not detach from the walls of the yarn channel. The speed is included in the energy formula E = 1 / 2.m.v² squared. If the outflow velocity of the fluid from the yarn channel is reduced to half, for example, the harmful energy is reduced to a quarter.

Die Breite des Garnkanals, senkrecht zur Symmetrieebene gemessen, bleibt wie schon erwähnt vorzugsweise über die ganze Länge des Garnkanals im wesentlichen konstant. Die Beibehaltung der optimalen Garnkanalbreite bewirkt eine bessere Qualität der Verwirbelung und insbesondere eine hohe Verwirbelungsdichte. Der Blasstrahl teilt das Filamentbündel im Moment des Anpressens an die zweite Wandfläche in zwei etwa gleichgrosse Bündel auf, die erst in einem gewissen Abstand von der Blasdüse zu den beiderseits der Blasdüsenmündung sich bildenden Verwirbelungsknoten wieder zusammenfinden. Ein weiteres Spreizen der beiden Filamentbündel in einem Garnkanal, der sich gegen die Enden hin verbreitern würde, würde die Bildung der Verwirbelungsknoten weiter von der Blasdüse weg bewirken. Dadurch würde die Verwirbelungsdichte herabgesetzt, der Abstand zwischen den Verwirbelungsstellen würde grösser.As already mentioned, the width of the yarn channel, measured perpendicular to the plane of symmetry, preferably remains essentially constant over the entire length of the yarn channel. Maintaining the optimal yarn channel width results in a better quality of the interlacing and in particular a high interlacing density. The blast jet divides the filament bundle into two approximately equal-sized bundles when they are pressed against the second wall surface, which only come together again at a certain distance from the blower nozzle to the intermingling nodes that form on both sides of the blower nozzle mouth. A further spreading of the two filament bundles in a yarn channel, which would widen towards the ends, would cause the swirl knots to form further away from the blow nozzle. This would reduce the swirl density, and the distance between the swirl points would be greater.

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

  • Fig. 1 eine schematische Draufsicht auf den Körper einer Verwirbelungsvorrichtung, teilweise aufgebrochen,
  • Fig. 2 einen Vertikalschnitt nach der Linie B - B in Fig. 1,
  • Fig. 3 einen Vertikalschnitt nach der Schnittebene A - A in Fig. 2,
  • Fig. 4 in einem ähnlichen Vertikalschnitt wie Fig. 3 eine abgewandelte Ausführungsform der Verwirbelungsvorrichtung,
  • Fig. 5 eine Teil-Seitenansicht der in den Fig. 1 bis 3 gezeigten Vorrichtung,
  • Fig. 6 eine Teil-Seitenansicht der Vorrichtung gemäss Fig. 4 und
  • Fig. 7 und Fig. 8 ähnliche Teil-Seitenansichten wie Fig. 5 für zwei abgewandelte Ausführungsformen.
Exemplary embodiments of the device according to the invention are explained in more detail below with reference to the drawings. In these show:
  • 1 is a schematic plan view of the body of a swirling device, partially broken away,
  • 2 shows a vertical section along the line BB in FIG. 1,
  • 3 shows a vertical section along the sectional plane AA in FIG. 2,
  • 4 in a vertical section similar to FIG. 3 a modified embodiment of the swirling device,
  • 5 is a partial side view of the device shown in FIGS. 1 to 3,
  • Fig. 6 is a partial side view of the device according to Fig. 4 and
  • FIGS. 7 and 8 are partial side views similar to FIG. 5 for two modified embodiments.

Gemäss den Fig. 1 bis 3 und 5 besitzt eine Vorrichtung zum Verwirbeln von Multifilamentgarnen einen zweiteiligen Körper mit einem Düsenkörperteil 1 und einem Prallkörperteil 2, der mittels einer Schraube 3 und zweier Zentrierstifte 4 und 5 auswechselbar auf dem Düsenkörperteil 1 befestigt ist. Durch den zweiteiligen Körper 1, 2 erstreckt sich ein durchgehender Garnkanal 6, der begrenzt ist durch eine erste, im Querschnitt konkave Wandfläche 7, gebildet von einer Nut im Düsenkörperteil 1, und durch eine zweite hohle Wandfläche 8, gebildet von einer Nut im Prallkörperteil 2. Die beiden Wandflächen 7 und 8 sind je symmetrisch bezüglich einer Symmetrieebene, die mit der Schnittebene A - A in Fig. 2 identisch ist. Der Düsenkörperteil 1 enthält eine Blasdüse 9, die etwa in der Mitte der Länge des Garnkanals 6 seitlich in den Garnkanal einmündet. Die Mündung der Blasdüse 9 liegt in der ersten Wandfläche 7. Die zweite Wandfläche 8 liegt der Mündung der Blasdüse 9 gegenüber. Die Achse der Blasdüse 9 liegt zweckmässig in der Symmetrieebene A - A.1 to 3 and 5, a device for intermingling multifilament yarns has a two-part body with a nozzle body part 1 and an impact body part 2, which is attached to the nozzle body part 1 by means of a screw 3 and two centering pins 4 and 5. A continuous yarn channel 6 extends through the two-part body 1, 2 and is delimited by a first wall surface 7, which is concave in cross section, formed by a groove in the nozzle body part 1, and by a second hollow wall surface 8, formed by a groove in the impact body part 2 The two wall surfaces 7 and 8 are each symmetrical with respect to a plane of symmetry which is identical to the sectional plane AA in FIG. The nozzle body part 1 contains a blowing nozzle 9, which opens into the side of the yarn channel approximately in the middle of the length of the yarn channel 6. The mouth of the blowing nozzle 9 lies in the first wall surface 7. The second wall surface 8 lies opposite the opening of the blowing nozzle 9. The axis of the blowing nozzle 9 is expediently in the plane of symmetry A - A.

Der Düsenkörperteil 1 könnte auch mehr als eine Blasdüse enthalten. In einem solchen Fall könnte jede Blasdüse bezüglich der Symmetrieebene A - A symmetrisch sein oder könnten auch beispielsweise zwei Blasdüsen zueinander symmetrisch auf beiden Seiten der Ebene A - A angeordnet sein.The nozzle body part 1 could also contain more than one blow nozzle. In such a case, each blowing nozzle could be symmetrical with respect to the plane of symmetry A - A or, for example, two blowing nozzles could also be arranged symmetrically to one another on both sides of the plane A - A.

Die erste Wandfläche 7 ist im Schnitt mit der Symmetrieebene A - A wie in Fig. 3 dargestellt derart gekrümmt, dass der in der Symmetrieebene A - A gemessene Abstand zwischen den beiden Wandflächen 7 und 8 von einem Minimum bei der Mündung der Blasdüse 9 gegen beide Enden des Garnkanals 6 hin allmählich zunimmt. Dadurch nimmt, obwohl die senkrecht zur Symmetrieebene A - A gemessene Breite des Garnkanals 6 über die ganze Länge des Garnkanals konstant bleibt, die Querschnittsfläche des Garnkanals von einer Minimalgrösse bei der Mündung der Blasdüse 9 gegen beide Enden des Garnkanals hin zu, beispielsweise bis auf das 1,2- bis 4-fache der Minimalgrösse, vorzugsweise auf das 1,5- bis 2-fache der Minimalgrösse.The first wall surface 7 is curved in section with the plane of symmetry AA as shown in FIG. 3 such that the distance between the two wall surfaces 7 and 8 measured in the plane of symmetry AA is at a minimum at the mouth of the blowing nozzle 9 against both Ends of the yarn channel 6 gradually increases. As a result, although the width of the yarn channel 6 measured perpendicular to the plane of symmetry A - A remains constant over the entire length of the yarn channel, the cross-sectional area of the yarn channel increases from a minimum size at the mouth of the blowing nozzle 9 towards both ends of the yarn channel, for example except for 1.2 to 4 times the minimum size, preferably 1.5 to 2 times the minimum size.

Die Krümmung der ersten Wandfläche 7 verläuft derart, dass sich die Strömung des Blasmediums von der Mündung der Blasdüse 9 zu den Enden des Garnkanals 6 nicht von der Wandfläche 7 ablöst. Das heisst zunächst, dass die erste Wandfläche 7 im Schnitt mit der Symmetrieebene A - A nach einer Kurve verläuft, die eine stetige Funktion in Abhängigkeit von der Entfernung von der Mündung der Blasdüse 9 darstellt. Die Kurve weist keine Knicke auf, das heisst, dass auch die erste Ableitung der genannten Funktion eine stetige Funktion ist. Ferner sollte sich auch die Krümmung der Kurve vorzugsweise nicht sprunghaft ändern, es sollte mit anderen Worten auch die zweite Ableitung der von der Kurve dargestellten Funktion vorzugsweise eine stetige Funktion (ohne Sprünge) sein.The curvature of the first wall surface 7 extends such that the flow of the blowing medium from the mouth of the blowing nozzle 9 to the ends of the yarn channel 6 does not detach from the wall surface 7. First of all, this means that the first wall surface 7 runs on average with the plane of symmetry A - A following a curve which represents a continuous function depending on the distance from the mouth of the blowing nozzle 9. The curve has no kinks, which means that the first derivative of the function mentioned is also a continuous function. Furthermore, the curvature of the curve should preferably not change abruptly; in other words, the second derivative of the function represented by the curve should preferably also be a continuous function (without jumps).

In der in den Fig. 1 bis 3 und 5 dargestellten Ausführungsform mündet in den Garnkanal 6 zwischen den beiden Wandflächen 7 und 8 seitlich ein durchgehender Einfädelschlitz 10. Der Einfädelschlitz 10 liegt zwischen ebenen Oberflächen des Düsenkörperteils 1 und des Prallkörperteils 2.In the embodiment shown in FIGS. 1 to 3 and 5, a continuous threading slot 10 opens laterally into the yarn channel 6 between the two wall surfaces 7 and 8. The threading slot 10 lies between flat surfaces of the nozzle body part 1 and the impact body part 2.

Im Düsenkörperteil 1 endet der Garnkanal 6 beiderends in je einer Nut 11 bzw. 12. In den Düsenkörperteil 1 sind ausserhalb der Enden des Garnkanals 6 Fadenführerstifte 13 bzw. 14 eingesetzt, z.B. Saphirstifte, die sich quer durch die Nuten 11 bzw. 12 erstrecken. Mit diesen Fadenführerstiften 13 und 14 ist ein Multifilamentgarn M (Fig. 3), das im Betrieb durch den Garnkanal 6 läuft und durch das aus der Blasdüse 9 in den Garnkanal 6 eintretende Blasmedium verwirbelt wird, im Garnkanal 6 sehr genau geführt. In Fig. 5 sind die Fadenführerstifte nicht eingezeichnet worden. Die zweite Wandfläche 8 erstreckt sich über die Enden des Garnkanals 6 hinaus nach aussen.In the nozzle body part 1, the yarn channel 6 ends at both ends in a groove 11 or 12. In the nozzle body part 1 6 thread guide pins 13 or 14 are inserted outside the ends of the yarn channel, e.g. Sapphire pins that extend across grooves 11 and 12, respectively. With these thread guide pins 13 and 14, a multifilament yarn M (FIG. 3), which runs through the yarn channel 6 during operation and is swirled by the blowing medium entering the yarn channel 6 from the blowing nozzle 9, is guided very precisely in the yarn channel 6. The thread guide pins have not been shown in FIG. 5. The second wall surface 8 extends beyond the ends of the yarn channel 6 to the outside.

Die in den Fig. 4 und,6 dargestellte Ausführungsform der erfindungsgemässen Vorrichtung unterscheidet sich von derjenigen gemäss den Fig. 1 bis 3 und 5 nur dadurch, dass auch die zweite Wandfläche 8.1 im Schnitt mit der Symmetrieebene gekrümmt ist, so dass der in der Symmetrieebene gemessene Abstand zwischen den beiden Wandflächen 7 und 8.1 gegen die Enden des Garnkanals 6 hin noch stärker zunimmt als in den Fig. 1 bis 3 und 5. Die Krümmung der zweiten Wandfläche 8.1 verläuft dabei in gleicher Weise stetig wie vorstehend für die erste Wandfläche 7 beschrieben, so dass sich auch von der zweiten Wandfläche 8.1 die Strömung nicht ablöst.The embodiment of the device according to the invention shown in FIGS. 4 and 6 differs from that according to FIGS. 1 to 3 and 5 only in that the second wall surface 8.1 is curved on average with the plane of symmetry, so that in the plane of symmetry measured distance between the two wall surfaces 7 and 8.1 towards the ends of the yarn channel 6 increases even more than in FIGS. 1 to 3 and 5. The curvature of the second wall surface 8.1 runs in the same manner as described above for the first wall surface 7 , so that the flow does not separate from the second wall surface 8.1.

Während in den Fig. 1 bis 6 die erste Wandfläche 7 im Querschnitt etwa V-förmig mit gerundetem Uebergang zwischen den beiden V-Schenkeln ist, zeigt Fig. 7 eine Ausführungsform, in welcher die erste Wandfläche 7.1 im Querschnitt etwa halbkreisförmig ist.1 to 6, the first wall surface 7 is approximately V-shaped in cross-section with a rounded transition between the two V-legs, FIG. 7 shows an embodiment in which the first wall surface 7.1 is approximately semi-circular in cross-section.

In den bisher beschriebenen Ausführungsformen ist die zweite Wandfläche 8 bzw. 8.1 hohl und im Querschnitt etwa rechteckig. Demgegenüber ist in der Ausführungsform gemäss Fig. 8 die den Garnkanal 6 nach oben begrenzende zweite Wandfläche 8.2 nicht von einer Nut im Prallkörperteil 2 gebildet, sondern einfach von einem Abschnitt der ebenen Unterseite des Prallkörperteils 2. Auch ist hier zwischen der Unterseite des Prallkörperteils 2 und der Oberseite des Düsenkörperteils 1 kein Einfädelschlitz vorhanden.In the embodiments described so far, the second wall surface 8 or 8.1 is hollow and approximately rectangular in cross section. In contrast, in the embodiment according to FIG. 8, the second wall surface 8.2, which delimits the yarn channel 6 upwards, is not formed by a groove in the impact body part 2, but simply by a section of the flat underside of the impact body part 2. Also here no threading slot is present between the underside of the impact body part 2 and the top of the nozzle body part 1.

Claims (10)

Vorrichtung zum Verwirbeln von Multifilamentgarnen, mit einem Körper (1, 2), welcher einen durchgehenden Garnkanal (6) enthält, der begrenzt ist durch eine erste Wandfläche (7; 7.1), in welcher wenigstens eine Blasdüse (9) seitlich in den Garnkanal (6) einmündet und welche im Querschnitt konkav ist, und durch eine zweite Wandfläche (8; 8.1; 8.2), welche der Mündung der Blasdüse (9) gegenüberliegt, wobei jede der beiden Wandflächen bezüglich einer Symmetrieebene (A-A) symmetrisch ist, dadurch gekennzeichnet, dass wenigstens eine der beiden Wandflächen in der Symmetrieebene (A-A) derart gekrümmt ist, dass der in der Symmetrieebene (A-A) gemessene Abstand zwischen den beiden Wandflächen von einem Minimum bei der Mündung der Blasdüse (9) gegen beide Enden des Garnkanals (6) hin allmählich zunimmt.Device for interlacing multifilament yarns, with a body (1, 2) which contains a continuous yarn channel (6) which is delimited by a first wall surface (7; 7.1), in which at least one blowing nozzle (9) laterally into the yarn channel ( 6) opens out and which is concave in cross-section, and by a second wall surface (8; 8.1; 8.2) which lies opposite the mouth of the blowing nozzle (9), each of the two wall surfaces being symmetrical with respect to a plane of symmetry (AA), characterized in that that at least one of the two wall surfaces in the plane of symmetry (AA) is curved such that the distance between the two wall surfaces measured in the plane of symmetry (AA) is at a minimum at the mouth of the blowing nozzle (9) towards both ends of the yarn channel (6) gradually increases. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Krümmung der wenigstens einen Wandfläche (7; 7.1; 8.1) so verläuft, dass Strömungsablösung von der Wandfläche vermieden wird.Device according to claim 1, characterized in that the curvature of the at least one wall surface (7; 7.1; 8.1) extends in such a way that flow separation from the wall surface is avoided. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, dass die Krümmung in der Symmetrieebene (A-A) nach einer Kurve verläuft, die eine stetige Funktion darstellt, von der auch die erste und die zweite Ableitung stetige Funktionen sind.Device according to Claim 2, characterized in that the curvature in the plane of symmetry (A-A) runs according to a curve which represents a continuous function, of which the first and the second derivative are also continuous functions. Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass wenigstens die erste Wandfläche (7; 7.1) in der angegebenen Weise gekrümmt ist.Device according to one of claims 1 to 3, characterized in that at least the first wall surface (7; 7.1) is curved in the manner specified. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, dass auch die zweite Wandfläche (8.1) in der angegebenen Weise gekrümmt ist.Device according to claim 4, characterized in that the second wall surface (8.1) is also curved in the manner indicated. Vorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die senkrecht zur Symmetrieebene (A-A) gemessene Breite des Garnkanals (6) über die ganze Länge des Garnkanals wenigstens annähernd konstant bleibt.Device according to one of claims 1 to 5, characterized in that the width of the yarn channel (6) measured perpendicular to the plane of symmetry (AA) remains at least approximately constant over the entire length of the yarn channel. Vorrichtung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass die Querschnittsfläche des Garnkanals (6) von einer Minimalgrösse bei der Mündung der Blasdüse (9) gegen beide Enden des Garnkanale hin bis auf das 1,2- bis 4-fache, vorzugsweise auf das 1,5- bis 2-fache, der Minimalgrösse zunimmt.Device according to one of claims 1 to 6, characterized in that the cross-sectional area of the yarn channel (6) from a minimum size at the mouth of the blowing nozzle (9) towards both ends of the yarn channel down to 1.2 to 4 times, preferably to 1.5 to 2 times the minimum size. Vorrichtung nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass in den Körper (1, 2) ausserhalb der beiden Enden des Garnkanals (6) Fadenführerelemente (13, 14) eingesetzt sind.Device according to one of claims 1 to 7, characterized in that thread guide elements (13, 14) are inserted into the body (1, 2) outside the two ends of the yarn channel (6). Vorrichtung nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass sich die zweite Wandfläche (8; 8.1; 8.2) über die Enden des Garnkanals (6) hinaus fortsetzt.Device according to one of claims 1 to 8, characterized in that the second wall surface (8; 8.1; 8.2) continues beyond the ends of the yarn channel (6). Vorrichtung nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass im Körper (1, 2) ein Einfädelschlitz (10) ausgebildet ist, der zwischen den beiden Wandflächen (7, 8) seitlich in den Garnkanal (6) einmündet.Device according to one of claims 1 to 9, characterized in that a threading slot (10) is formed in the body (1, 2), which opens laterally into the yarn channel (6) between the two wall surfaces (7, 8).
EP93810193A 1992-04-03 1993-03-17 Apparatus for interlacing multifilament yarns Expired - Lifetime EP0564400B1 (en)

Applications Claiming Priority (2)

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CH1099/92 1992-04-03
CH109992 1992-04-03

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JP (1) JP2751947B2 (en)
KR (1) KR100200408B1 (en)
CN (1) CN1039730C (en)
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RU (1) RU2095496C1 (en)

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EP0633334A1 (en) * 1993-07-10 1995-01-11 TEMCO TEXTILMASCHINENKOMPONENTEN GmbH &amp; Co. KG Apparatus for entangling filaments
US6052878A (en) * 1999-05-28 2000-04-25 E. I. Du Pont De Nemours And Company Methods and apparatus for interlacing filaments and methods of making the apparatus
US6834417B1 (en) 1999-03-03 2004-12-28 Heberlein Fibertechnology, Inc. Method and device for processing filament yarn, and use of said device
US7426820B2 (en) 2003-12-02 2008-09-23 Giudici S.P.A. Method and device for the production of a covered elastic yarn and for automatic replacement of feeds spools
CN114959983A (en) * 2022-05-11 2022-08-30 宜兴市阿芙勒尔陶瓷科技有限公司 Working method of elasticizer network nozzle accessory

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US5950290A (en) * 1997-09-12 1999-09-14 International Machinery Sales, Inc. Jet for interlacing textile yarns
EP1411014A1 (en) 2002-10-17 2004-04-21 Giudici S.p.a. Method and device for the production of covered elastic yarn and for automatically replacing feeding spools
TWI301518B (en) * 2004-06-30 2008-10-01 Oerlikon Heberlein Temco Wattwil Ag Device and process for the treatment of filament yarn
ITBI20040004A1 (en) * 2004-10-12 2005-01-12 Sinterama S P A High performance device for the air interlacing of a wire, and relative method
DE102012003410A1 (en) 2012-02-23 2013-08-29 Rpe Technologies Gmbh Yarn handling device for swirling of multi-filament yarns, has nozzle body with yarn channels and blowing hole, where the yarn channel is formed from wider yarn channel area and narrower yarn channel area
ITUA20164462A1 (en) * 2016-06-17 2017-12-17 Sergio Zaglio INTERLACING DEVICE AND ITS METHOD
DE102019001545A1 (en) * 2019-03-05 2020-09-10 Oerlikon Textile Gmbh & Co. Kg Swirling device for swirling a synthetic, multifilament thread

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EP0465407A1 (en) * 1990-07-02 1992-01-08 Heberlein Maschinenfabrik AG Device for entangling multifilament yarns

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0633334A1 (en) * 1993-07-10 1995-01-11 TEMCO TEXTILMASCHINENKOMPONENTEN GmbH &amp; Co. KG Apparatus for entangling filaments
US6834417B1 (en) 1999-03-03 2004-12-28 Heberlein Fibertechnology, Inc. Method and device for processing filament yarn, and use of said device
US6052878A (en) * 1999-05-28 2000-04-25 E. I. Du Pont De Nemours And Company Methods and apparatus for interlacing filaments and methods of making the apparatus
US7426820B2 (en) 2003-12-02 2008-09-23 Giudici S.P.A. Method and device for the production of a covered elastic yarn and for automatic replacement of feeds spools
CN114959983A (en) * 2022-05-11 2022-08-30 宜兴市阿芙勒尔陶瓷科技有限公司 Working method of elasticizer network nozzle accessory

Also Published As

Publication number Publication date
KR930021842A (en) 1993-11-23
JPH0617359A (en) 1994-01-25
RU2095496C1 (en) 1997-11-10
CN1039730C (en) 1998-09-09
KR100200408B1 (en) 1999-06-15
DE59301070D1 (en) 1996-01-18
EP0564400B1 (en) 1995-12-06
JP2751947B2 (en) 1998-05-18
CN1079264A (en) 1993-12-08

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