EP0465407B1 - Device for entangling multifilament yarns - Google Patents

Device for entangling multifilament yarns Download PDF

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Publication number
EP0465407B1
EP0465407B1 EP91810427A EP91810427A EP0465407B1 EP 0465407 B1 EP0465407 B1 EP 0465407B1 EP 91810427 A EP91810427 A EP 91810427A EP 91810427 A EP91810427 A EP 91810427A EP 0465407 B1 EP0465407 B1 EP 0465407B1
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EP
European Patent Office
Prior art keywords
concave wall
wall surface
symmetry
plane
yarn channel
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.)
Expired - Lifetime
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EP91810427A
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German (de)
French (fr)
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EP0465407A1 (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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Publication of EP0465407A1 publication Critical patent/EP0465407A1/en
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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • 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
    • 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

Definitions

  • the invention relates to a device for interlacing multifilament yarns, with a body that contains a continuous yarn channel, into which at least one blowing nozzle and a threading slot each open laterally, see e.g. document GB-A-2 178 072.
  • the object of the invention is to design the device specified at the outset in such a way that the required high swirl density can be achieved with a high regularity of the fixed point distances - without the occurrence of individual larger fixed point distances or opening lengths - and with very low blowing air consumption per swirl node.
  • swirling devices with predominantly round (cylindrical) yarn channels are suitable for low to medium swirling densities, but for higher swirling densities, swirling devices with yarn channels are used which generally have a flat impact surface for the blowing jet from the blowing nozzle, in some cases yes also have up to three flat surfaces.
  • the invention is based on the knowledge that not only the wall surfaces of the yarn channel must contain at least two flat partial surfaces, but that it is also necessary to guide the yarn within the intermingling device very precisely, for which purpose in the body of the device at both ends of the Yarn channel thread guide must be used.
  • the yarn should only come into contact with the second concave wall surface, which lies opposite the mouth of the blow nozzle, but hardly with the first concave wall surface containing the mouth of the blow nozzle.
  • the edge of the opening of the threading slot, from which the first wall surface extends is at a greater distance from the plane of symmetry than the other edge of the opening of the threading slot.
  • the part of the yarn channel delimited by the first wall surface serves, in addition to receiving the blowing nozzle, mainly for guiding the blowing medium towards the two ends of the yarn channel in a manner that is easy to swirl.
  • lateral outlet openings can be provided, which are seen in front of the mouth of the blowing nozzle Thread guides start from the thread channel.
  • the body of the device according to the invention can be formed in one or more parts.
  • the body can be composed of a nozzle body part containing the blow nozzle with the first concave wall surface and an impact body part with the second concave wall surface which is exchangeably fastened to the nozzle body part.
  • other swirl density ranges can be achieved by simply changing the impact body part under the same operating conditions.
  • the swirl density can be reduced by half.
  • the interchangeable impact body parts can also consist of different materials and / or have differently machined surfaces.
  • 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 yarn channel 6 extends straight through the assembled body 1, 2, into which at least one blowing nozzle 7 contained in the nozzle body part 1 and a threading slot 8 each open laterally.
  • the threading slot 8 lies between flat surfaces of the nozzle body part 1 and the impact body part 2.
  • the yarn channel 6 is formed by a groove with a first concave wall surface 11 in the nozzle body part 1 and a groove with a second concave wall surface 12 in the impact body part 2.
  • the concave wall surface in the impact body part 2 is symmetrical with respect to one Axis A of the yarn channel containing plane of symmetry E, and is composed of three flat partial surfaces 12.1, 12.2 and 12.3.
  • the axis A of the yarn channel can be defined as the (straight) line containing the centroids of the yarn channel cross sections.)
  • the partial surfaces 12.1 and 12.2 are approximately perpendicular to the partial surface 12.3; the groove in the impact body part 2 is therefore approximately rectangular in cross section.
  • the concave wall surface in the nozzle body part 1 is likewise symmetrical with respect to the plane of symmetry E, it is composed of two flat partial surfaces 11.1 and 11.2 inclined to the symmetry plane E and a cylindrical partial surface 11.3 connecting the partial surfaces 11.1 and 11.2.
  • the blowing nozzle 7 is also symmetrical with respect to the plane of symmetry E. It can be perpendicular to the yarn channel axis A as shown or could form an angle with this axis between approximately 70 and 90 °.
  • the nozzle body part 1 could also contain more than one blowing nozzle; in such a case, each blowing nozzle could be symmetrical with respect to the plane of symmetry E or, for example, two blowing nozzles could also be arranged symmetrically opposite one another with respect to the plane of symmetry E.
  • the partial surface 11.2 of the first concave wall surface starts from a first (lower) edge of the opening of the threading slot 8, and the partial surface 12.2 of the second concave wall surface starts from the second (upper) edge of the opening of the threading slot 8.
  • the first edge of the mouth of the threading slot has a greater distance from the plane of symmetry E than the second edge of this mouth.
  • the partial surface 11.1 which is symmetrical to the partial surface 11.2 extends to a line which is symmetrically opposite the first edge of the mouth of the threading slot 8. Between this line and the edge of the partial surface 12.1, which is symmetrically opposite the second edge of the opening of the threading slot 8, transition wall surfaces are provided on the nozzle body part 1 and / or on the impact body part 2. Instead, however, a second slot could also be provided, the mouth of which would be symmetrically opposite the mouth of the threading slot 8.
  • At least one multifilament yarn M (FIG. 3) runs in the longitudinal direction through the yarn channel 6 is moved, swirled by a jet of blowing medium, for example compressed air and / or water vapor, entering the yarn channel 6 from the blowing nozzle 7.
  • a jet of blowing medium for example compressed air and / or water vapor
  • the yarn must be guided very precisely within the yarn channel 6.
  • 6 thread guides 13 and 14 are inserted in the nozzle body part 1 at both ends of the yarn channel, for example in the form of glued-in sapphire pins.
  • the thread guides 13 and 14 extend across the yarn channel 6 in such a way that a thread placed over these thread guides 13 and 14 in the tensioned state has no contact with the first concave wall surface 11, but one measured by this first concave wall surface 11 in the plane of symmetry E.
  • Distance h which is preferably 5 to 50% of the distance H measured in the plane of symmetry E from the first concave wall surface 11 to the second concave wall surface 12. It is advantageous to guide the multifilament yarn M (or several multifilament yarns) in the direction of one of the thread guides 13 or 14 and to pull it away from the other thread guide, which directions lie approximately in the plane of symmetry E and with the axis A of the thread channel angle ⁇ of 2 form up to 20 °.
  • the thread guides (as seen from the mouth of the blowing nozzle 7) have lateral outlet openings for the blowing medium. 1 and 3, these outlet openings are, for example, grooves 15 and 16 and / or bores 17 and 18 in the nozzle body part 1, which emanate from the groove of the nozzle body part 1 which has the first concave wall surface 11.
  • the cross section of the outlet openings is larger than the part of the cross section of the yarn channel 6 blocked by the respective thread guide 13 or 14 or larger than the projection surface in the direction of the yarn channel axis A of the part of the respective thread guide 13 or 14 projecting into the profile of the yarn channel 6.
  • FIG. 5 to 11 show views similar to FIG. 4 for modified embodiments of the two-part body of the swirling device.
  • the groove forming part of the yarn channel in the nozzle body part and / or the groove in the impact body part has different cross-sectional shapes, but which are always symmetrical with respect to the plane of symmetry E.
  • the groove in the nozzle body part 1 and the first concave wall surface have the same shape as described with reference to FIG. 4.
  • the second concave wall surface in the impact body part 2.1 consists of a cylindrical surface 12.4. If the impact body part 2 of FIG. 4 is replaced by the impact body part 2.1 according to FIG. 5, the same nozzle body part 1 is used to obtain a device which produces a lower intermingling density in a multifilament yarn under the same operating conditions.
  • 6 and 7 show embodiments in which the groove in the nozzle body part 1.1 has a modified shape.
  • the first concave wall surface is composed of three flat partial surfaces 11.4, 11.5 and 11.6. 6 can be used with the impact body part 2 described with reference to FIG. 4 or according to FIG. 7 with the impact body part 2.1 described with reference to FIG. 5.
  • the groove in the nozzle body part 1.2 has yet another cross-sectional shape.
  • the first concave wall surface in the nozzle body part 1.2 consists of a cylindrical surface 11.7.
  • the nozzle body part 1.2 is used according to FIG. 8 with the impact body part 2 described with reference to FIG. 4, but according to FIG. 9 with a impact body part 2.2 in which the second concave wall surface is composed of three flat partial surfaces 12.5, 12.6 and 12.7 and two of these planar partial surfaces in pairs connecting cylindrical partial surfaces 12.8 and 12.9.
  • FIG. 10 and 11 show that the impact body part 2.2 described with reference to FIG. 9 can also be used with the nozzle body part 1 according to FIG. 4 or with the nozzle body part 1.1 according to FIG. 6.
  • the impact body part is always attached to the nozzle body part in an exchangeable manner; however, it is clear that the impact body part could also be permanently connected to the nozzle body part or could be formed in one piece with it.
  • the profile of the yarn channel is limited by two concave wall surfaces, each of which is symmetrical with respect to the plane of symmetry E and which together contain at least four partial surfaces, at least two of which are flat. 4, these partial surfaces are the flat partial surfaces 11.1, 11.2, 12.1, 12.2 and 12.3 and the cylindrical partial surface 11.3.
  • these partial surfaces are the flat partial surfaces 11.1, 11.2, 12.1, 12.2 and 12.3 and the cylindrical partial surface 11.3.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)

Description

Die Erfindung bezieht sich auf eine Vorrichtung zum Verwirbeln von Multifilamentgarnen, mit einem Körper, der einen durchgehenden Garnkanal enthält, in welchen wenigstens eine Blasdüse sowie ein Einfädelschlitz je seitlich einmünden, siehe z.B. das Dokument GB-A-2 178 072.The invention relates to a device for interlacing multifilament yarns, with a body that contains a continuous yarn channel, into which at least one blowing nozzle and a threading slot each open laterally, see e.g. document GB-A-2 178 072.

Solche Verwirbelungsvorrichtungen mit wegen der einfachen Handhabung dauernd geöffnetem Einfädelschlitz sind in verschiedenen Ausführungen bekannt.Such swirling devices with permanently opening threading slot because of the simple handling are known in various designs.

In den letzten Jahren haben sich die Anforderungen an Verwirbelungsvorrichtungen für Glattgarne, vororientierte Garne (POY-Garne), vollorientierte Garne (FOY-Garne) und vollverstreckte Garne (FDY-Garne) durch zunehmenden Einsatz von Filamentgarnen mit immer feineren Einzelfilamenten stark erhöht. Die feineren Einzelfilamente erfordern für die störungsfreie Weiterverarbeitung einen besseren Fadenschluss mit möglichst wenig abstehenden Filamentschlaufen, was für das Verwirbeln dieser Filamentgarne eine Forderung nach immer kürzeren Oeffnungslängen zwischen den Verwirbelungsknoten bedeutet. Das heisst gleichzeitig, dass die Verwirbelungsdichte, gemessen als Zahl der Verwirbelungsknoten bzw. Fixpunkte pro Meter Garnlänge (FP/m), auf immer höhere Werte gesteigert werden muss.In recent years, the requirements for interlacing devices for plain yarns, pre-oriented yarns (POY yarns), fully oriented yarns (FOY yarns) and fully drawn yarns (FDY yarns) have increased significantly due to the increasing use of filament yarns with ever finer individual filaments. The finer individual filaments require a better thread closure with as few protruding filament loops for trouble-free further processing, which means that for the intermingling of these filament yarns, the opening lengths between the intermingling knots are becoming shorter and shorter. At the same time, this means that the intermingling density, measured as the number of intermingling nodes or fixed points per meter of yarn length (FP / m), must be increased to ever higher values.

Die Aufgabe der Erfindung besteht darin, die eingangs angegebene Vorrichtung derart auszubilden, dass die geforderte hohe Verwirbelungsdichte bei hoher Regelmässigkeit der Fixpunktabstände - ohne Auftreten von einzelnen grösseren Fixpunktabständen bzw. Oeffnungslängen - und bei sehr niedrigem Blasluftverbrauch pro Verwirbelungsknoten erreicht werden kann.The object of the invention is to design the device specified at the outset in such a way that the required high swirl density can be achieved with a high regularity of the fixed point distances - without the occurrence of individual larger fixed point distances or opening lengths - and with very low blowing air consumption per swirl node.

Die Aufgabe wird erfindungsgemäss mit der im kennzeichnenden Teil des Patentanspruchs 1 angegebenen Kombination von Merkmalen gelöst.The object is achieved according to the invention with the combination of features specified in the characterizing part of patent claim 1.

Einzelne dieser Merkmale sind an sich bei Verwirbelungsvorrichtungen bekannt. So weiss der Fachmann, dass Verwirbelungsvorrichtungen mit vorwiegend runden (zylindrischen) Garnkanälen für niedrige bis mittlere Verwirbelungsdichten geeignet sind, für höhere Verwirbelungsdichten jedoch Verwirbelungsvorrichtungen mit Garnkanälen zum Einsatz kommen, die in der Regel eine ebene Aufprallfläche für den Blasstrahl aus der Blasdüse aufweisen, ja teilweise auch bis zu drei ebene Flächen besitzen.Some of these features are known per se in swirling devices. For example, the person skilled in the art knows that swirling devices with predominantly round (cylindrical) yarn channels are suitable for low to medium swirling densities, but for higher swirling densities, swirling devices with yarn channels are used which generally have a flat impact surface for the blowing jet from the blowing nozzle, in some cases yes also have up to three flat surfaces.

Die Erfindung beruht auf der Erkenntnis, dass nicht nur die Wandflächen des Garnkanals wenigstens zwei ebene Teilflächen enthalten müssen, sondern dass es auch erforderlich ist, das Garn innerhalb der Verwirbelungavorrichtung sehr genau zu führen, zu welchem Zweck in den Körper der Vorrichtung bei beiden Enden des Garnkanals Fadenführer eingesetzt sein müssen. Ueberdies sollte das Garn im Betrieb nur mit der zweiten konkaven Wandfläche, die der Mündung der Blasdüse gegenüberliegt, in Berührung treten, kaum jedoch mit der die Mündung der Blasdüse enthaltenden ersten konkaven Wandfläche. Aus diesem Grund hat der Rand der Mündung des Einfädelschlitzes, von dem die erste Wandfläche ausgeht, einen grösseren Abstand von der Symmetriebene als der andere Rand der Mündung des Einfädelschlitzes. Der von der ersten Wandfläche begrenzte Teil des Garnkanals dient neben der Aufnahme der Blasdüse hauptsächlich zur verwirbelungsgünstigen Führung des Blasmediums zu den beiden Enden des Garnkanals hin.The invention is based on the knowledge that not only the wall surfaces of the yarn channel must contain at least two flat partial surfaces, but that it is also necessary to guide the yarn within the intermingling device very precisely, for which purpose in the body of the device at both ends of the Yarn channel thread guide must be used. In addition, the yarn should only come into contact with the second concave wall surface, which lies opposite the mouth of the blow nozzle, but hardly with the first concave wall surface containing the mouth of the blow nozzle. For this reason, the edge of the opening of the threading slot, from which the first wall surface extends, is at a greater distance from the plane of symmetry than the other edge of the opening of the threading slot. The part of the yarn channel delimited by the first wall surface serves, in addition to receiving the blowing nozzle, mainly for guiding the blowing medium towards the two ends of the yarn channel in a manner that is easy to swirl.

Um eine Verengung des Strömungsquerschnitts für das Blasmedium durch die Fadenführer zu vermeiden, können seitliche Auslassöffnungen vorgesehen werden, die von der Mündung der Blasdüse aus gesehen vor den Fadenführern vom Garnkanal ausgehen.In order to avoid a narrowing of the flow cross section for the blowing medium by the thread guides, lateral outlet openings can be provided, which are seen in front of the mouth of the blowing nozzle Thread guides start from the thread channel.

Der Körper der erfindungsgemässen Vorrichtung kann ein- oder mehrteilig ausgebildet sein. In einer bevorzugten Ausführungsform kann der Körper zusammengesetzt sein aus einem die Blasdüse enthaltenden Düsenkörperteil mit der ersten konkaven Wandfläche und einem auswechselbar am Düsenkörperteil befestigten Prallkörperteil mit der zweiten konkaven Wandfläche. Bei einer solchen Ausführungsform können durch einfaches Auswechseln des Prallkörperteils unter gleichen Betriebsbedingungen andere Verwirbelungsdichtebereiche erreicht werden. So kann beim Auswechseln eines Prallkörperteils, in welchem die zweite konkave Wandfläche eine prismatische Fläche mit etwa rechteckigem Querschnitt ist, gegen einen anderen Prallkörperteil, in welchem die zweite konkave Wandfläche eine zylindrische Fläche mit etwa halbkreisförmigem Querschnitt ist, die Verwirbelungsdichte unter die Hälfte gesenkt werden, ohne die Verwirbelungsknoten zu schwächen, wie es bei einer Druckabsenkung an der Blasdüse der Fall wäre. Auch ist die Regelmässigkeit der Fixpunktabstände im Falle des Prallkörperteils mit zylindrischer Wandfläche - als Folge der in den Körper der Vorrichtung eingesetzten Fadenführer - immer noch viel grösser als bei einer Druckabsenkung zur Reduktion der Verwirbelungsdichte. Die Möglichkeit der Feinregulierung der Verwirbelungsdichte durch Variation des Blasdrucks kann dann noch zusätzlich angewandt werden. Die auswechselbaren Prallkörperteile können ferner aus unterschiedlichen Materialien bestehen und/oder unterschiedlich bearbeitete Oberflächen aufweisen.The body of the device according to the invention can be formed in one or more parts. In a preferred embodiment, the body can be composed of a nozzle body part containing the blow nozzle with the first concave wall surface and an impact body part with the second concave wall surface which is exchangeably fastened to the nozzle body part. In such an embodiment, other swirl density ranges can be achieved by simply changing the impact body part under the same operating conditions. Thus, when replacing a baffle part in which the second concave wall surface is a prismatic surface with an approximately rectangular cross section, against another impact body part in which the second concave wall surface is a cylindrical surface with an approximately semicircular cross section, the swirl density can be reduced by half. without weakening the swirl nodes, as would be the case if the pressure on the blow nozzle were reduced. Also, the regularity of the fixed point distances in the case of the impact body part with a cylindrical wall surface - as a result of the thread guides inserted into the body of the device - is still much greater than when the pressure is reduced to reduce the swirl density. The possibility of fine adjustment of the swirl density by varying the blowing pressure can then also be used. The interchangeable impact body parts can also consist of different materials and / or have differently machined surfaces.

Ausfürungsbeispiele der erfindungsgemässen Vorrichtung werden nachstehend anhand der Zeichnungen näher erläutert. In den Zeichnungen zeigen:

  • Fig. 1 eine Draufsicht auf den Körper einer Verwirbelungsvorrichtung, wobei ein Teil weggebrochen ist,
  • Fig. 2 einen Vertikalschnitt durch den Körper nach der Linie B - B in Fig 1,
  • Fig. 3 einen zu Fig. 2 senkrechten Vertikalschnitt, nach der Linie A - A in Fig. 2,
  • Fig. 4 in grösserem Massstab einen Ausschnitt aus Fig. 2, der den Querschnitt des Garnkanals zeigt, und
  • Fig. 5 bis Fig. 11 in gleichen Ansichten wie Fig. 4 verschiedene andere mögliche Formen des Garnkanalquerschnitts.
Exemplary embodiments of the device according to the invention are explained in more detail below with reference to the drawings. The drawings show:
  • Fig. 1 is a plan view of the body of a swirler, with part broken away is
  • 2 shows a vertical section through the body along the line BB in FIG. 1,
  • 3 shows a vertical section perpendicular to FIG. 2, along the line AA in FIG. 2,
  • Fig. 4 on a larger scale a section of Fig. 2, which shows the cross section of the yarn channel, and
  • 5 to 11 in the same views as FIG. 4 different other possible shapes of the yarn channel cross section.

Gemäss den Fig. 1 bis 3 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.1 to 3, 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.

Durch den zusammengesetzten Körper 1, 2 erstreckt sich geradlinig ein Garnkanal 6, in welchen wenigstens eine im Düsenkörperteil 1 enthaltene Blasdüse 7 sowie ein Einfädelschlitz 8 je seitlich einmünden. Der Einfädelschlitz 8 liegt in der dargestellten zweiteiligen Ausführungsform zwischen ebenen Oberflächen des Düsenkörperteils 1 und des Prallkörperteils 2.A yarn channel 6 extends straight through the assembled body 1, 2, into which at least one blowing nozzle 7 contained in the nozzle body part 1 and a threading slot 8 each open laterally. In the two-part embodiment shown, the threading slot 8 lies between flat surfaces of the nozzle body part 1 and the impact body part 2.

Der Garnkanal 6 ist gebildet von einer Nut mit einer ersten konkaven Wandfläche 11 im Düsenkörperteil 1 und einer Nut mit einer zweiten konkaven Wandfläche 12 im Prallkörperteil 2. Aus Fig. 4 ist zu ersehen, dass die konkave Wandfläche im Prallkörperteil 2 symmetrisch ist bezüglich einer die Achse A des Garnkanals enthaltenden Symmetrieebene E, und zusammengesetzt ist aus drei ebenen Teilflächen 12.1, 12.2 und 12.3. (Die Achse A des Garnkanals kann definiert werden als die die Flächenschwerpunkte der Garnkanalquerschnitte enthaltende (gerade) Linie.) Die Teilflächen 12.1 und 12.2 stehen zur Teilfläche 12.3 etwa senkrecht; die Nut im Prallkörperteil 2 ist also im Querschnitt etwa rechteckig. Die konkave Wandfläche im Düsenkörperteil 1 ist ebenfalls symmetrisch bezüglich der Symmetrieebene E, sie ist zusammengesetzt aus zwei zur Symmetrieebene E geneigten, ebenen Teilflächen 11.1 und 11.2 und einer die Teilflächen 11.1 und 11.2 miteinander verbindenden zylindrischen Teilfläche 11.3.The yarn channel 6 is formed by a groove with a first concave wall surface 11 in the nozzle body part 1 and a groove with a second concave wall surface 12 in the impact body part 2. From FIG. 4 it can be seen that the concave wall surface in the impact body part 2 is symmetrical with respect to one Axis A of the yarn channel containing plane of symmetry E, and is composed of three flat partial surfaces 12.1, 12.2 and 12.3. (The axis A of the yarn channel can be defined as the (straight) line containing the centroids of the yarn channel cross sections.) The partial surfaces 12.1 and 12.2 are approximately perpendicular to the partial surface 12.3; the groove in the impact body part 2 is therefore approximately rectangular in cross section. The concave wall surface in the nozzle body part 1 is likewise symmetrical with respect to the plane of symmetry E, it is composed of two flat partial surfaces 11.1 and 11.2 inclined to the symmetry plane E and a cylindrical partial surface 11.3 connecting the partial surfaces 11.1 and 11.2.

Die Blasdüse 7 ist ebenfalls symmetrisch bezüglich der Symmetrieebene E. Sie kann zur Garnkanalachse A wie dargestellt senkrecht stehen oder könnte mit dieser Achse einen Winkel zwischen etwa 70 und 90° bilden. Der Düsenkörperteil 1 könnte auch mehr als eine Blasdüse enthalten, in einem solchen Fall könnte jede Blasdüse bezüglich der Symmetrieebene E symmetrisch sein oder könnten auch beispielsweise zwei Blasdüsen einander bezüglich der Symmetrieebene E symmetrisch gegenüberliegend angeordnet sein.The blowing nozzle 7 is also symmetrical with respect to the plane of symmetry E. It can be perpendicular to the yarn channel axis A as shown or could form an angle with this axis between approximately 70 and 90 °. The nozzle body part 1 could also contain more than one blowing nozzle; in such a case, each blowing nozzle could be symmetrical with respect to the plane of symmetry E or, for example, two blowing nozzles could also be arranged symmetrically opposite one another with respect to the plane of symmetry E.

Die Teilfläche 11.2 der ersten konkaven Wandfläche geht von einem ersten (unteren) Rand der Mündung des Einfädelschlitzes 8 aus, und die Teilfläche 12.2 der zweiten konkaven Wandfläche geht vom zweiten (oberen) Rand der Mündung des Einfädelschlitzes 8 aus. Der erste Rand der Mündung des Einfädelschlitzes hat von der Symmetrieebene E einen grösseren Abstand als der zweite Rand dieser Mündung.The partial surface 11.2 of the first concave wall surface starts from a first (lower) edge of the opening of the threading slot 8, and the partial surface 12.2 of the second concave wall surface starts from the second (upper) edge of the opening of the threading slot 8. The first edge of the mouth of the threading slot has a greater distance from the plane of symmetry E than the second edge of this mouth.

Die zur Teilfläche 11.2 symmetrische Teilfläche 11.1 erstreckt sich bis zu einer Linie, die dem ersten Rand der Mündung des Einfädelschlitzes 8 symmetrisch gegenüberliegt. Zwischen dieser Linie und dem Rand der Teilfläche 12.1, der dem zweiten Rand der Mündung des Einfädelschlitzes 8 symmetrisch gegenüberliegt, sind am Düsenkörperteil 1 und/oder am Prallkörperteil 2 Uebergangswandflächen vorgesehen. Stattdessen könnte da aber auch ein zweiter Schlitz vorgesehen sein, dessen Mündung der Mündung des Einfädelschlitzes 8 symmetrisch gegenüberliegen würde.The partial surface 11.1 which is symmetrical to the partial surface 11.2 extends to a line which is symmetrically opposite the first edge of the mouth of the threading slot 8. Between this line and the edge of the partial surface 12.1, which is symmetrically opposite the second edge of the opening of the threading slot 8, transition wall surfaces are provided on the nozzle body part 1 and / or on the impact body part 2. Instead, however, a second slot could also be provided, the mouth of which would be symmetrically opposite the mouth of the threading slot 8.

Im Betrieb wird wenigstens ein Multifilamentgarn M(Fig.3), das in Längsrichtung durch den Garnkanal 6 bewegt wird, durch einen aus der Blasdüse 7 in den Garnkanal 6 eintretenden Strahl von Blasmedium, z.B. Druckluft und/oder Wasserdampf, verwirbelt. Um dabei eine hohe Verwirbelungsdichte zu erreichen, sollte das Garn im wesentlichen nur die zweite konkave Wandfläche 12 im Prallkörperteil 2 berühren, kaum jedoch die die Mündung der Blasdüse 7 enthaltende erste konkave Wandfläche 11. Das wird einerseits durch die Tatsache begünstigt, dass der erste (untere) Rand des Einfädelschlitzes 8, von dem die erste konkave Wandfläche 11 ausgeht, wie beschrieben von der Symmetrieebene E einen grösseren Abstand hat als der zweite (obere) Rand des Einfädelschlitzes, von dem die zweite konkave Wandfläche 12 ausgeht. Anderseits muss das Garn innerhalb des Garnkanals 6 sehr genau geführt werden. Zu diesem Zweck sind in den Düsenkörperteil 1 bei beiden Enden des Garnkanals 6 Fadenführer 13 und 14 eingesetzt, z.B. in Form von eingeklebten Saphirstiften. Die Fadenführer 13 und 14 erstrecken sich derart quer durch den Garnkanal 6, dass ein über diese Fadenführer 13 und 14 gelegter Faden in gespanntem Zustand keinen kontakt mit der ersten konkaven Wandfläche 11 hat, sondern von dieser ersten konkaven Wandfläche 11 in der Symmetrieebene E gemessen einen Abstand h hat, der vorzugsweise 5 bis 50 % des in der Symmetrieebene E gemessenen Abstandes H von der ersten konkaven Wandfläche 11 zur zweiten konkaven Wandfläche 12 beträgt. Dabei ist es vorteilhaft, das Multifilamentgarn M (oder mehrere Multifilamentgarne) in Richtungen zu einem der Fadenführer 13 oder 14 zu führen und vom anderen Fadenführer weg abzuziehen, welche Richtungen etwa in der Symmetrieebene E liegen und mit der Achse A des Garnkanals Winkel α von 2 bis 20° bilden.In operation, at least one multifilament yarn M (FIG. 3) runs in the longitudinal direction through the yarn channel 6 is moved, swirled by a jet of blowing medium, for example compressed air and / or water vapor, entering the yarn channel 6 from the blowing nozzle 7. In order to achieve a high swirl density, the yarn should essentially only touch the second concave wall surface 12 in the impact body part 2, but scarcely the first concave wall surface 11 containing the mouth of the blowing nozzle 7. This is favored on the one hand by the fact that the first ( lower) edge of the threading slot 8, from which the first concave wall surface 11 extends, as described, has a greater distance from the plane of symmetry E than the second (upper) edge of the threading slot, from which the second concave wall surface 12 extends. On the other hand, the yarn must be guided very precisely within the yarn channel 6. For this purpose, 6 thread guides 13 and 14 are inserted in the nozzle body part 1 at both ends of the yarn channel, for example in the form of glued-in sapphire pins. The thread guides 13 and 14 extend across the yarn channel 6 in such a way that a thread placed over these thread guides 13 and 14 in the tensioned state has no contact with the first concave wall surface 11, but one measured by this first concave wall surface 11 in the plane of symmetry E. Distance h, which is preferably 5 to 50% of the distance H measured in the plane of symmetry E from the first concave wall surface 11 to the second concave wall surface 12. It is advantageous to guide the multifilament yarn M (or several multifilament yarns) in the direction of one of the thread guides 13 or 14 and to pull it away from the other thread guide, which directions lie approximately in the plane of symmetry E and with the axis A of the thread channel angle α of 2 form up to 20 °.

Damit das Ausströmen des Blasmediums aus den beiden Enden des Garnkanals 6 durch die Fadenführer 13 und 14 nicht behindert wird, gehen vom Garnkanal 6 vor den Fadenführern (von der Mündung der Blasdüse 7 aus gesehen) seitliche Auslassöffnungen für das Blasmedium aus. Gemäss den Fig. 1 und 3 sind diese Auslassöffnungen beispielsweise Nuten 15 und 16 und/oder Bohrungen 17 und 18 im Düsenkörperteil 1, die von der die erste konkave Wandfläche 11 aufweisenden Nut des Düsenkörperteils 1 ausgehen. Der Querschnitt der Auslassöffnungen ist grösser als der vom jeweiligen Fadenführer 13 bzw. 14 versperrte Teil des Querschnitts des Garnkanals 6 bzw. grösser als die Projektionsfläche in Richtung der Garnkanalachse A des in das Profil des Garnkanals 6 hineinragenden Teils des jeweiligen Fadenführers 13 bzw. 14.So that the outflow of the blowing medium from the two ends of the yarn channel 6 is not hindered by the thread guides 13 and 14, proceed from the yarn channel 6 the thread guides (as seen from the mouth of the blowing nozzle 7) have lateral outlet openings for the blowing medium. 1 and 3, these outlet openings are, for example, grooves 15 and 16 and / or bores 17 and 18 in the nozzle body part 1, which emanate from the groove of the nozzle body part 1 which has the first concave wall surface 11. The cross section of the outlet openings is larger than the part of the cross section of the yarn channel 6 blocked by the respective thread guide 13 or 14 or larger than the projection surface in the direction of the yarn channel axis A of the part of the respective thread guide 13 or 14 projecting into the profile of the yarn channel 6.

Mit der Vorrichtung gemäss den Fig. 1 bis 4 konnten dank der beschriebenen Merkmale, insbesondere auch dank der ebenen Form der drei Teilflächen 12.1, 12.2 und 12.3, aus denen die konkave Wandfläche 12 im Prallkörperteil 2 zusammengesetzt ist, an einer POY--Spinnmaschine sehr hohe Verwirbelungsdichten von durchschnittlich über 45 FP/m unter Produktionsbedingungen und durchschnittlich über 50 FP/m unter Laborbedingungen erreicht werden, wobei das eingesetzte Polyester-Garn einen POY-Titer von etwa dtex 75 bis 85 bei etwa 36 bis 45 Filamenten aufwies und mit 3000 m/min durch den Garnkanal lief. Das bedeutet, dass pro Sekunde 2500 Fixpunkte im Garn gebildet wurden. Gleichzeitig konnte der Energieeinsatz pro Fixpunkt unter die Hälfte der bisher üblichen Werte gesenkt werden. So betrug der Energieeinsatz im obigen Beispiel 0,44 m³ Druckluft (im Normzustand) pro 1 Million gebildeter Fixpunkte, bei einem manometrischen Luftdruck von 6 bar.With the device according to FIGS. 1 to 4, thanks to the described features, in particular also thanks to the flat shape of the three partial surfaces 12.1, 12.2 and 12.3, from which the concave wall surface 12 in the impact body part 2 is composed, it was very possible to use a POY spinning machine high intermingling densities of over 45 FP / m on average under production conditions and over 50 FP / m on average under laboratory conditions can be achieved, the polyester yarn used having a POY titer of about dtex 75 to 85 for about 36 to 45 filaments and 3000 m / min ran through the yarn channel. This means that 2500 fixed points were formed in the yarn per second. At the same time, the energy input per fixed point was reduced to less than half of the usual values. In the above example, the energy input was 0.44 m³ of compressed air (in the normal state) per 1 million fixed points formed, with a manometric air pressure of 6 bar.

Die Fig. 5 bis 11 zeigen ähnliche Ansichten wie die Fig. 4 für abgewandelte Ausführungsformen des zweiteiligen Körpers der Verwirbelungsvorrichtung. In diesen abgewandelten Ausführungsformen haben die einen Teil des Garnkanals bildende Nut im Düsenkörperteil und/oder die Nut im Prallkörperteil unterschiedliche Querschnittsformen, die jedoch immer symmetrisch sind bezüglich der Symmetrieebene E.5 to 11 show views similar to FIG. 4 for modified embodiments of the two-part body of the swirling device. In these modified embodiments, the groove forming part of the yarn channel in the nozzle body part and / or the groove in the impact body part has different cross-sectional shapes, but which are always symmetrical with respect to the plane of symmetry E.

Gemäss Fig. 5 haben die Nut im Düsenkörperteil 1 bzw. die erste konkave Wandfläche die gleiche Form wie anhand der Fig. 4 beschrieben. Die zweite konkave Wandfläche im Prallkörperteil 2.1 besteht aus einer zylindrischen Fläche 12.4. Wenn der Prallkörperteil 2 von Fig. 4 gegen den Prallkörperteil 2.1 gemäss Fig. 5 ausgewechselt wird, wird mit dem gleichen Düsenkörperteil 1 eine Vorrichtung erhalten, die in einem Multifilamentgarn unter gleichen Betriebsbedingungen eine geringere Verwirbelungsdichte erzeugt.5, the groove in the nozzle body part 1 and the first concave wall surface have the same shape as described with reference to FIG. 4. The second concave wall surface in the impact body part 2.1 consists of a cylindrical surface 12.4. If the impact body part 2 of FIG. 4 is replaced by the impact body part 2.1 according to FIG. 5, the same nozzle body part 1 is used to obtain a device which produces a lower intermingling density in a multifilament yarn under the same operating conditions.

Die Fig. 6 und 7 zeigen Ausführungsformen, in denen die Nut im Düsenkörperteil 1.1 eine abgeänderte Form hat. Die erste konkave Wandfläche ist zusammengesetzt aus drei ebenen Teilflächen 11.4, 11.5 und 11.6. Der Düsenkörperteil 1.1 kann gemäss Fig. 6 mit dem anhand der Fig. 4 beschriebenen Prallkörperteil 2 oder gemäss Fig. 7 mit dem anhand der Fig. 5 beschriebenen Prallkörperteil 2.1 verwendet werden.6 and 7 show embodiments in which the groove in the nozzle body part 1.1 has a modified shape. The first concave wall surface is composed of three flat partial surfaces 11.4, 11.5 and 11.6. 6 can be used with the impact body part 2 described with reference to FIG. 4 or according to FIG. 7 with the impact body part 2.1 described with reference to FIG. 5.

In den Fig. 8 und 9 hat die Nut im Düsenkörperteil 1.2 noch eine andere Querschnittsform. Die erste konkave Wandfläche im Düsenkörperteil 1.2 besteht aus einer zylindrischen Fläche 11.7. Der Düsenkörpterteil 1.2 wird gemäss Fig. 8 mit dem anhand der Fig. 4 beschriebenen Prallkörperteil 2 verwendet, gemäss Fig. 9 jedoch mit einem Prallkörperteil 2.2, in welchem die zweite konkave Wandfläche zusammengesetzt ist aus drei ebenen Teilflächen 12.5, 12.6 und 12.7 und zwei diese ebenen Teilflächen paarweise miteinander verbindenden zylindrischen Teilflächen 12.8 und 12.9.8 and 9, the groove in the nozzle body part 1.2 has yet another cross-sectional shape. The first concave wall surface in the nozzle body part 1.2 consists of a cylindrical surface 11.7. The nozzle body part 1.2 is used according to FIG. 8 with the impact body part 2 described with reference to FIG. 4, but according to FIG. 9 with a impact body part 2.2 in which the second concave wall surface is composed of three flat partial surfaces 12.5, 12.6 and 12.7 and two of these planar partial surfaces in pairs connecting cylindrical partial surfaces 12.8 and 12.9.

Die Fig. 10 und 11 zeigen, dass der anhand der Fig. 9 beschriebene Prallkörperteil 2.2 auch mit dem Düsenkörperteil 1 gemäss Fig. 4 bzw. mit dem Düsenkörperteil 1.1 gemäss Fig. 6 verwendet werden kann.10 and 11 show that the impact body part 2.2 described with reference to FIG. 9 can also be used with the nozzle body part 1 according to FIG. 4 or with the nozzle body part 1.1 according to FIG. 6.

In den vorstehend beschriebenen Ausführungsformen ist der Prallkörperteil stets auswechselbar auf dem Düsenkörperteil befestigt; es ist jedoch klar, dass der Prallkörperteil auch dauerhaft mit dem Düsenkörperteil verbunden oder einstückig mit diesem ausgebildet sein könnte.In the embodiments described above, the impact body part is always attached to the nozzle body part in an exchangeable manner; however, it is clear that the impact body part could also be permanently connected to the nozzle body part or could be formed in one piece with it.

In allen Ausführungsformen ist das Profil des Garnkanals durch zwei konkave Wandflächen begrenzt, von denen jede bezüglich der Symmetrieebene E symmetrisch ist und die zusammen wenigstens vier Teilflächen enthalten, von denen wenigstens zwei eben sind. Diese Teilflächen sind in Fig. 4 die ebenen Teilflächen 11.1, 11.2, 12.1, 12.2 und 12.3 und die zylindrische Teilfläche 11.3. In der Ausführungsform gemäss Fig. 5 sind es die ebenen Teilflächen 11.1 und 11.2 und die zylindrischen Teilflächen 11.3 und 12.4; gemäss Fig. 6 die ebenen Teilflächen 11.4, 11.5, 11.6, 12.1, 12.2 und 12.3; gemäss Fig. 7 die ebenen Teilflächen 11.4, 11.5, 11.6 und die zylindrische Teilfläche 12.4; gemäss Fig. 8 die ebenen Teilflächen 12.1, 12.2, 12.3 und die zylindrische Teilfläche 11.7; gemäss Fig. 9 die ebenen Teilflächen 12.5, 12.6, 12.7 und die zylindrischen Teilflächen 11.7, 12.8 und 12.9; gemäss Fig. 10 die ebenen Teilflächen 11.1, 11.2, 12.5, 12.6, 12.7 und die zylindrischen Teilflächen 11.3, 12.8 und 12.9; gemäss Fig. 11 die ebenen Teilflächen 11.4, 11.5, 11.6, 12.5, 12.6, 12.7 und die zylindrischen Teilflächen 12.8 und 12.9.In all embodiments, the profile of the yarn channel is limited by two concave wall surfaces, each of which is symmetrical with respect to the plane of symmetry E and which together contain at least four partial surfaces, at least two of which are flat. 4, these partial surfaces are the flat partial surfaces 11.1, 11.2, 12.1, 12.2 and 12.3 and the cylindrical partial surface 11.3. In the embodiment according to FIG. 5, it is the flat partial surfaces 11.1 and 11.2 and the cylindrical partial surfaces 11.3 and 12.4; 6, the flat partial surfaces 11.4, 11.5, 11.6, 12.1, 12.2 and 12.3; 7 the flat partial surfaces 11.4, 11.5, 11.6 and the cylindrical partial surface 12.4; 8, the flat partial surfaces 12.1, 12.2, 12.3 and the cylindrical partial surface 11.7; 9 the flat partial surfaces 12.5, 12.6, 12.7 and the cylindrical partial surfaces 11.7, 12.8 and 12.9; 10 the flat partial surfaces 11.1, 11.2, 12.5, 12.6, 12.7 and the cylindrical partial surfaces 11.3, 12.8 and 12.9; 11, the flat partial surfaces 11.4, 11.5, 11.6, 12.5, 12.6, 12.7 and the cylindrical partial surfaces 12.8 and 12.9.

Claims (7)

  1. Device for interlacing multifilament yarns, with a body (1, 2) containing a continuous yarn channel (6) into which terminate in each case laterally at least one blast nozzle (7) as well as a threading slot (8), characterized by the combination of the following features:
       the profile of the yarn channel (6) is defined by two concave wall surfaces (11, 12) emanating from respectively one rim of the orifice of the threading slot (8) and being in each case symmetrical with respect to a plane of symmetry (E) containing the axis (A) of the yarn channel (6), a first of the concave wall surfaces (11) containing the orifice of the blast nozzle (7) while the second concave wall surface (12) lies in opposition to this orifice,
       the two concave wall surfaces (11, 12) contain jointly at least four component surfaces of which at least two are planar,
       the rim of the orifice of the threading slot (8) from which the first concave wall surface (11) emanates has a greater spacing from the plane of symmetry (E) than the other rim of the orifice of the threading slot (8),
       thread guides (13, 14) are inserted in the body (1, 2) at both ends of the yarn channel (6), these thread guides being positioned so that a thread placed over these thread guides (13, 14) has, in the tensioned condition, no contact with the first concave wall surface (11).
  2. Device according to claim 1, characterized in that the blast nozzle (7) or nozzles is (are) symmetrical with respect to the plane of symmetry (E).
  3. Device according to claim 1 or 2 characterized in that said body (1, 2) is composed of a nozzle unit section (1) with the first concave wall surface (11), containing the blast nozzle (7), and of a baffle unit section (2) with the second concave wall surface (12), attached to the nozzle unit section (1) in an exchangeable fashion.
  4. Device according to one of claims 1 to 3, characterized in that the thread guides (13, 14) inserted in the body (1, 2) are positioned so that a thread placed over these thread guides (13, 14) has, in the tensioned condition, a distance (h) from the first concave wall surface (11) as measured in the plane of symmetry (E) which amounts to 5-50% of the spacing (H) from the first (11) to the second concave wall surface (12) as measured in the plane of symmetry (E).
  5. Device according to one of claims 1 to 4, characterized in that lateral outlet openings (15, 16; 17, 18) emanate from the yarn channel (6) in front of the yarn guides (13, 14) as seen from the orifice of the blast nozzle (7).
  6. Device according to claim 5, characterized in that the cross section of the outlet openings (15, 16; 17, 18) is larger than the portion of the cross section of the yarn channel (6) blocked by the thread guide (13, 14).
  7. Method for operating the device according to one of claims 1 to 6, characterized in that at least one multifilament yarn (M) is guided toward one of the thread guides (13, 14) and is taken off from the other thread guide in directions which lie approximately in the plane of symmetry (E) and form an angle (α) of 2-20° with the axis (A) of the yarn channel (6).
EP91810427A 1990-07-02 1991-06-05 Device for entangling multifilament yarns Expired - Lifetime EP0465407B1 (en)

Applications Claiming Priority (2)

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CH2197/90 1990-07-02
CH2197/90A CH681633A5 (en) 1990-07-02 1990-07-02

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EP0465407B1 true EP0465407B1 (en) 1994-04-20

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EP (1) EP0465407B1 (en)
JP (1) JP3034649B2 (en)
KR (1) KR100222293B1 (en)
CN (1) CN1024820C (en)
CH (1) CH681633A5 (en)
DE (1) DE59101425D1 (en)
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US4993130A (en) * 1988-09-08 1991-02-19 Basf Corporation Continuous high speed method for making a commingled carpet yarn
CH676559A5 (en) * 1989-02-15 1991-02-15 Heberlein & Co Ag
US4949441A (en) * 1989-10-13 1990-08-21 Ethridge Fredrick A Polylaminar apparatus for fluid treatment of yarn

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19700817A1 (en) * 1996-01-12 1997-07-17 Heberlein & Co Ag Eddy jet assembly for carpet filament yarns
DE19700817C2 (en) * 1996-01-12 1999-02-11 Heberlein Fasertech Ag Process and intermingling nozzle for the production of spin-textured filament yarns

Also Published As

Publication number Publication date
KR920002831A (en) 1992-02-28
EP0465407A1 (en) 1992-01-08
JP3034649B2 (en) 2000-04-17
RU2048622C1 (en) 1995-11-20
CN1058434A (en) 1992-02-05
DE59101425D1 (en) 1994-05-26
CN1024820C (en) 1994-06-01
JPH05140833A (en) 1993-06-08
US5146660A (en) 1992-09-15
KR100222293B1 (en) 1999-10-01
CH681633A5 (en) 1993-04-30

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