EP0968327A1 - Auxiliary blow nozzle for an air jet weaving machine - Google Patents

Auxiliary blow nozzle for an air jet weaving machine

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Publication number
EP0968327A1
EP0968327A1 EP98965080A EP98965080A EP0968327A1 EP 0968327 A1 EP0968327 A1 EP 0968327A1 EP 98965080 A EP98965080 A EP 98965080A EP 98965080 A EP98965080 A EP 98965080A EP 0968327 A1 EP0968327 A1 EP 0968327A1
Authority
EP
European Patent Office
Prior art keywords
radius
angle
auxiliary blowing
outer circumference
blowing nozzle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP98965080A
Other languages
German (de)
French (fr)
Other versions
EP0968327B1 (en
Inventor
Horst Kerner
Hubertus Ludwig
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lindauer Dornier GmbH
Original Assignee
Lindauer Dornier GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Lindauer Dornier GmbH filed Critical Lindauer Dornier GmbH
Publication of EP0968327A1 publication Critical patent/EP0968327A1/en
Application granted granted Critical
Publication of EP0968327B1 publication Critical patent/EP0968327B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/28—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein the weft itself is projected into the shed
    • D03D47/30—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein the weft itself is projected into the shed by gas jet
    • D03D47/3006—Construction of the nozzles
    • D03D47/302—Auxiliary nozzles

Definitions

  • the invention relates to an auxiliary blowing nozzle for an air jet weaving machine with an air flow channel having an inlet opening, with an outlet opening in the end region of the nozzle with a longitudinal center axis angled with respect to the longitudinal center axis of the air flow channel, with at least one length section extending from the end area and running in the direction of the inlet opening with one roughly elliptical outer circumference, with an envelope curve which partially encompasses the longitudinal center axis of the outlet opening and describes the free end of the end region and has a radius R, and the envelope curve is rounded to adjacent surfaces.
  • Such an auxiliary blowing nozzle is known from US Pat. No. 4,987,930.
  • Auxiliary blowing nozzles with the features known above are used in air jet weaving machines.
  • the longitudinal axis of the outlet opening for the air flow is at right angles to the course of the envelope of the free end of the auxiliary blowing nozzle or at right angles to the longitudinal center axis of the approximately elliptical outer circumference of the nozzle body.
  • a design means that, for optimal effectiveness of the air flow on the weft thread to be inserted into an insertion channel of a reed, the longitudinal center axis of the outlet opening is rotated at an angle of a few degrees in the horizontal to the warp threads of a warp or in some angular degrees Entry channel of the reed is aligned.
  • auxiliary blowing nozzles which also have a structural design according to the preamble of claim 1. With the structurally determined angled longitudinal center axis of the outlet opening with respect to the course of the envelope formed by the free end of the nozzle body or with respect to the
  • the longitudinal axis of the approximately elliptical cross-section of the nozzle body which here is congruent to the envelope curve, is to be achieved, a) an optimal effectiveness of the air flow on the weft thread and b) an optimal adaptation of the outer contour of the nozzle body end region to the course of the warp threads.
  • the disadvantage here is that the longitudinal center axis of the outlet opening lies at an angle of more than 90 ° to the longitudinal axis of the elliptical shape of the nozzle body end section. This means that the outlet opening is more difficult to manufacture than an outlet opening aligned at right angles to the longitudinal axis of the elliptical outer circumference.
  • auxiliary blowing nozzle in particular for air-jet weaving machines, which, when immersed in the warp, enables the warp to be divided symmetrically and protects the structure of the warp threads.
  • the inventive design of the end region of the auxiliary blowing nozzle advantageously ensures that the group of warp threads affected by the immersion of the auxiliary blowing nozzle in the warp is symmetrically divided without the structure of the relevant warp threads being impaired in any way.
  • FIG. 1 shows the auxiliary blowing nozzle on a scale of approximately 3: 1 in a side view
  • Figure 2 shows the end region of the auxiliary blowing nozzle.
  • Figure 1 according to view A,
  • Figure 3 shows the auxiliary blowing nozzle.
  • Figure 2 in plan view and
  • Figure 4 shows the end region of the auxiliary blowing nozzle.
  • Figure 2 according to view B.
  • the auxiliary blowing nozzle 1 consists of a tubular body 2 with a first length section 3, e.g. circular cross-section, with an air inlet opening 2a, and with a second length section 3a, which has an approximately elliptical cross-section.
  • the outlet opening 2b is machined into the wall of the elliptical cross section.
  • FIGS. 2 to 4 show the end section la of the auxiliary blowing nozzle 1 according to view A.
  • the free end 1b of the end section la is, as is known per se, described by an envelope 5 with a radius R.
  • the radius R is ⁇ 3700 ⁇ m.
  • the envelope 5 extends at an angle> 3 degrees with respect to the longitudinal axis 4a of the approximately elliptical cross-section, see also FIG. 3, that a radius R 3 of approximately 1000 ⁇ m is the radius R, the envelope connects to the outer circumference 4, that starting from the envelope 5, see also FIGS. 2 to 4, a first surface 6 and a second surface 7 designed in the manner of a roof are present on both sides and the two
  • outer circumference 4 sloping, arcuate surface section 6a, 7a, the transitions to the adjacent surfaces 6,7 and the outer circumference 4 are rounded.
  • the surfaces 6, 7 can be slightly curved outwards or they can be flat.
  • the curvature can have a radius R 4 that is less than 1000 ⁇ m.
  • a large number of the auxiliary blowing nozzles designed according to the invention is on the blade bar carrying a reed with a weft insertion channel, one not shown here
  • Air jet loom arranged.
  • the arrangement is provided according to the invention in such a way that the envelope 5 and the surfaces 6, 7 are positioned exactly parallel to the warp threads of a warp and the surface sections 6a, 7a run almost parallel to the warp threads and the longitudinal axis 2b 'of the outlet opening 2b in one Angle> 3 degrees to the longitudinal axis of the weft insertion channel.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)

Abstract

PCT No. PCT/DE98/03412 Sec. 371 Date Jul. 14, 1999 Sec. 102(e) Date Jul. 14, 1999 PCT Filed Nov. 18, 1998 PCT Pub. No. WO99/27171 PCT Pub. Date Jun. 3, 1999The invention relates to an auxiliary blow nozzle for air jet weaving machines which permits a symmetric division of the warp, said division protecting the structure of the warp threads, when the blow nozzle is immersed in the warp. To this end, an envelope curve (5) which describes the free end (1b) of the nozzle body (1) and which has a radius (R1) runs at an angle ( alpha ) relative to the longitudinal axis (4a) of the approximately elliptic cross-section of a nozzle body end area (1a). The surfaces (6, 7) originating from the envelope curve (5) slope downward on both sides to the outer periphery (4) in a manner similar to a roof, and said surfaces (6, 7) thus enclose an angle ( beta ). The respective surface (6, 7) having a radius (R2) graduates into the outer periphery (4). A radius (R3) connects radius (R1) of the envelope curve (5) to the outer periphery (4), and each surface (6, 7) constructs an arc-shaped surface section (6a, 7a) which slopes downward at an angle ( gamma ) relative to the outer periphery (4). The graduations of said surface sections into the adjacent surfaces (6, 7) and into the outer periphery (4) are rounded.

Description

Hilfsblasdüse für eine Luftdüsenwebmaschine Auxiliary blowing nozzle for an air jet loom
Die Erfindung betrifft eine Hilfsblasdüse für eine Luftdüsenwebmaschine mit einem eine Eintrittsöff ung aufweisenden Luftströmkanal, mit einer im Endbereich der Düse vorhandenen Austrittsöffhung mit einer der Längsmittenachse des Luftströmkanals gegenüber abgewinkelten Längsmittenachse, mit wenigstens einen vom Endbereich ausgehenden, in Richtung der Eintrittsöffnung hin verlaufenden Längenabschnitt mit einem etwa elliptischen Außenumfang, mit einer die Längsmittenachse der Austrittsöffhung teilweise umgreifenden und das freie Ende des Endbereiches beschreibenden Hüllkurve, die einen Radius R, besitzt und wobei die Hüllkurve zu angrenzenden Flächen verrundet ist. Eine solche Hilfsblasdüse ist aus dem US-Patent 4,987,930 bekannt.The invention relates to an auxiliary blowing nozzle for an air jet weaving machine with an air flow channel having an inlet opening, with an outlet opening in the end region of the nozzle with a longitudinal center axis angled with respect to the longitudinal center axis of the air flow channel, with at least one length section extending from the end area and running in the direction of the inlet opening with one roughly elliptical outer circumference, with an envelope curve which partially encompasses the longitudinal center axis of the outlet opening and describes the free end of the end region and has a radius R, and the envelope curve is rounded to adjacent surfaces. Such an auxiliary blowing nozzle is known from US Pat. No. 4,987,930.
In Luftdüsenwebmaschinen werden Hilfsblasdüsen mit den vorstehend bekannten Merkmalen eingesetzt.Auxiliary blowing nozzles with the features known above are used in air jet weaving machines.
Die Längsachse der Austrittsöffnung für den Luftstrom liegt dabei rechtwinklig zum Verlauf der Hüllkurve des freien Endes der Hilfsblasdüse bzw. rechtwinklig zur Längsmittenachse des etwa elliptischen Außenumfangs des Düsenkörpers. Für den Praxiseinsatz der Hilfsblasdüsen bedeutet eine solche Ausbildung, daß zur optimalen Wirksamkeit der Luftströmung auf den in einen Eintragskanal eines Webblattes einzutragenden Schußfaden die Längsmittenachse der Austrittsöffhung in einem Winkel von einigen Winkelgraden in der Horizontalen zu den Kettfäden einer Webkette verdreht bzw. in einigen Winkelgraden zum Eintragskanal des Webblattes hin ausgerichtet ist. Eine solche Ausrichtung besitzt aber den Nachteil, daß beim Eintauchen der Hilfsblasdüsen in das Unterfach einer Webkette nicht alle betreffenden, von dem freien Ende der Düse gestreiften oder sogar kurzzeitig angehobenen Kettfäden von diesem Ende etwa symmetrisch abgleiten und daß das webtechnisch bedingte, immer wiederkehrende Eintauchen der Hilfsblasdüsen in die Unterkette bei einer nicht parallel zum Verlauf der Kettfäden ausgerichteten Längsachse des etwa elliptischen Außenumfangs zum Beschädigen der Struktur der betreffenden Kettfäden führt.The longitudinal axis of the outlet opening for the air flow is at right angles to the course of the envelope of the free end of the auxiliary blowing nozzle or at right angles to the longitudinal center axis of the approximately elliptical outer circumference of the nozzle body. For the practical use of the auxiliary blowing nozzles, such a design means that, for optimal effectiveness of the air flow on the weft thread to be inserted into an insertion channel of a reed, the longitudinal center axis of the outlet opening is rotated at an angle of a few degrees in the horizontal to the warp threads of a warp or in some angular degrees Entry channel of the reed is aligned. However, such an alignment has the disadvantage that when the auxiliary blowing nozzles are immersed in the lower shed of a warp, not all of the warp threads concerned, striped from the free end of the nozzle or even briefly raised, slide approximately symmetrically from this end, and that the weaving-related, recurring immersion of the Auxiliary blowing nozzles in the lower chain in the case of a longitudinal axis of the approximately elliptical outer circumference which is not aligned parallel to the course of the warp threads leads to damage to the structure of the relevant warp threads.
Diese Beschädigungen sind in dem hergestellten Gewebe erkennbar und stellen sich schließlich im Gewebe als Gewebefehler dar.This damage can be seen in the fabric produced and arises finally in tissue as tissue defects.
Bekannt sind des weiteren aus der EP 0 145 824 Hilfsblasdüsen, die ebenfalls einen strukturellen Aufbau gemäß dem Oberbegriff von Patentanspruch 1 besitzen. Mit der konstruktiv festgelegten abgewinkelten Längsmittenachse der Austrittsöffhung gegenüber dem Verlauf der das freie Ende des Düsenkörpers bildeten Hüllkurve bzw. gegenüber derAlso known from EP 0 145 824 are auxiliary blowing nozzles, which also have a structural design according to the preamble of claim 1. With the structurally determined angled longitudinal center axis of the outlet opening with respect to the course of the envelope formed by the free end of the nozzle body or with respect to the
Längsachse des etwa elliptischen Querschnitts des Düsenkörpers, die hier kongruent zur Hüllkurve ist, soll erreicht werden, a) eine optimale Wirksamkeit der Luftströmung auf den Schußfaden und b) eine optimale Anpassung der Außenkontur des Düsenköφer-Endbereiches an den Verlauf der Kettfäden.The longitudinal axis of the approximately elliptical cross-section of the nozzle body, which here is congruent to the envelope curve, is to be achieved, a) an optimal effectiveness of the air flow on the weft thread and b) an optimal adaptation of the outer contour of the nozzle body end region to the course of the warp threads.
Von Nachteil ist hierbei, daß die Längsmittenachse der Austrittsöffhung in einem Winkel von mehr als 90 ° zur Längsachse der elliptischen Form des Düsenkörper-Endabschnittes liegt. Das bedeutet, daß die Austrittsöffnung schwieriger zu fertigen ist, als eine rechtwinklig zur Längsachse des elliptischen Außenumfanges ausgerichtete Austrittsöffhung.The disadvantage here is that the longitudinal center axis of the outlet opening lies at an angle of more than 90 ° to the longitudinal axis of the elliptical shape of the nozzle body end section. This means that the outlet opening is more difficult to manufacture than an outlet opening aligned at right angles to the longitudinal axis of the elliptical outer circumference.
Vor diesem Hintergrund ist es Aufgabe der Erfindung, eine Hilfsblasdüse, insbesondere für Luftdüsenwebmaschinen zu schaffen, die beim Eintauchen in die Webkette ein symmetrisches, die Struktur der Kettfäden schonendes Teilen der Webkette ermöglicht. Die Aufgabe wird erfindungsgemäß durch die kennzeichnenden Merkmale desAgainst this background, it is an object of the invention to provide an auxiliary blowing nozzle, in particular for air-jet weaving machines, which, when immersed in the warp, enables the warp to be divided symmetrically and protects the structure of the warp threads. The object is achieved by the characterizing features of the
Patentanspruchs 1 gelöst.Claim 1 solved.
Durch die erfindungsgemäße Ausbildung des Endbereiches der Hilfsblasdüse wird auf vorteilhafte Weise erreicht, daß die vom Eintauchen der Hilfsblasdüse in die Webkette betroffene Schar von Kettfäden symmetrisch geteilt wird, ohne daß die Struktur der betreffenden Kettfäden in irgendeiner Weise beeinträchtigt wird.The inventive design of the end region of the auxiliary blowing nozzle advantageously ensures that the group of warp threads affected by the immersion of the auxiliary blowing nozzle in the warp is symmetrically divided without the structure of the relevant warp threads being impaired in any way.
Die Erfindung wird nachfolgend anhand eines Ausführungsbeispiels erläutert.The invention is explained below using an exemplary embodiment.
Es zeigen: Figur 1 die Hilfsblasdüse im Maßstab von etwa 3 : 1 in der Seitenansicht,Show it: FIG. 1 shows the auxiliary blowing nozzle on a scale of approximately 3: 1 in a side view,
Figur 2 den Endbereich der Hilfsblasdüse gem. Figur 1 nach Ansicht A,Figure 2 shows the end region of the auxiliary blowing nozzle. Figure 1 according to view A,
Figur 3 die Hilfsblasdüse gem. Figur 2 in der Draufsicht undFigure 3 shows the auxiliary blowing nozzle. Figure 2 in plan view and
Figur 4 den Endbereich der Hilfsblasdüse gem. Figur 2 nach Ansicht B.Figure 4 shows the end region of the auxiliary blowing nozzle. Figure 2 according to view B.
Gemäß Figur 1 besteht die Hilfsblasdüse 1 aus einem rohrförmigen Köφer 2 mit einem ersten Längenabschnitt 3, z.B. kreisförmigen Querschnitts, mit einer Lufteintrittsöff ung 2a, und mit einem zweiten Längenabschnitt 3a, der einen etwa elliptischen Querschnitt besitzt.According to Figure 1, the auxiliary blowing nozzle 1 consists of a tubular body 2 with a first length section 3, e.g. circular cross-section, with an air inlet opening 2a, and with a second length section 3a, which has an approximately elliptical cross-section.
In einem Endabschnitt la des zweiten Längenabschnitts 3a ist in die Wandung des elliptischen Querschnitts die Austrittsöffhung 2b eingearbeitet.In an end section la of the second length section 3a, the outlet opening 2b is machined into the wall of the elliptical cross section.
Die erfindungsgemäßen Merkmale der Hilfsblasdüse 1 sind in den Figuren 2 bis 4 in einem gegenüber der Figur 1 vergrößertem Maßstab dargestellt. Die Figur 2 zeigt den Endabschnitt la der Hilfsblasdüse 1 nach Ansicht A.The features of the auxiliary blowing nozzle 1 according to the invention are shown in FIGS. 2 to 4 on a larger scale than in FIG. FIG. 2 shows the end section la of the auxiliary blowing nozzle 1 according to view A.
Das freie Ende lb des Endabschnitts la wird, wie an sich bekannt, von einer Hüllkurve 5 mit einem Radius R beschrieben.The free end 1b of the end section la is, as is known per se, described by an envelope 5 with a radius R.
Der Radius R, ist ≥ 3700 μm.The radius R is ≥ 3700 μm.
Gegenüber dem Stand der Technik ist nun erfindungswesentlich, daß die Hüllkurve 5 in einem Winkel > 3 Winkelgrade gegenüber der Längsachse 4a des annähernd elliptischen Querschnitts, siehe auch Figur 3, verläuft, daß ein Radius R3 von etwa 1000 μm den Radius R, der Hüllkurve mit dem Außenumfang 4 verbindet, daß von der Hüllkurve 5 ausgehend, siehe auch die Figuren 2 bis 4, beidseitig eine in Art eines Daches ausgebildete erste Fläche 6 und zweite Fläche 7 vorhanden ist und die beidenCompared to the prior art, it is essential to the invention that the envelope 5 extends at an angle> 3 degrees with respect to the longitudinal axis 4a of the approximately elliptical cross-section, see also FIG. 3, that a radius R 3 of approximately 1000 μm is the radius R, the envelope connects to the outer circumference 4, that starting from the envelope 5, see also FIGS. 2 to 4, a first surface 6 and a second surface 7 designed in the manner of a roof are present on both sides and the two
Flächen unter Einschluß eines Winkels ß von etwa 120 Winkelgraden mit dem Radius R2 ≥Areas including an angle β of approximately 120 degrees with radius R 2 ≥
300 μm in den Außenumfang 4 übergehen und daß jede Fläche 6,7 einen in einem Winkel γ > 50 Winkelgrade zum Radius r des elliptischen300 microns transition into the outer circumference 4 and that each surface 6,7 at an angle γ> 50 degrees to the radius r of the elliptical
Außenumfanges 4 hin abfallenden, bogenförmigen Flächenabschnitt 6a,7a ausbildet, dessen Übergänge zu den angrenzenden Flächen 6,7 und dem Außenumfang 4 verrundet sind. In weiterer Ausgestaltung der Erfindung können die Flächen 6,7 nach außen leicht gewölbt sein oder aber ebenflächig ausgebildet sein. Die Wölbung kann dabei einen Radius R4 besitzen, der kleiner als 1000 μm ist.Forms outer circumference 4 sloping, arcuate surface section 6a, 7a, the transitions to the adjacent surfaces 6,7 and the outer circumference 4 are rounded. In a further embodiment of the invention, the surfaces 6, 7 can be slightly curved outwards or they can be flat. The curvature can have a radius R 4 that is less than 1000 μm.
Eine Vielzahl der erfindungsgemäß ausgebildeten Hilfsblasdüsen ist an der ein Webblatt mit Schußfadeneintragskanal tragenden Blattleiste einer hier nicht dargestelltenA large number of the auxiliary blowing nozzles designed according to the invention is on the blade bar carrying a reed with a weft insertion channel, one not shown here
Luftdüsenwebmaschine angeordnet.Air jet loom arranged.
Die Anordnung ist dabei erfindungsgemäß derart vorgesehen, daß die Hüllkurve 5 und die Flächen 6,7 exakt parallel zu den Kettfäden einer Webkette positioniert sind und die Flächenabschnitte 6a, 7a nahezu parallel zu den Kettfäden verlaufen und dabei die Längsachse 2b' der Austrittsöffhung 2b in einem Winkel > 3 Winkelgrade zur Längsachse des Schußfadeneintragkanals ausgerichtet ist. The arrangement is provided according to the invention in such a way that the envelope 5 and the surfaces 6, 7 are positioned exactly parallel to the warp threads of a warp and the surface sections 6a, 7a run almost parallel to the warp threads and the longitudinal axis 2b 'of the outlet opening 2b in one Angle> 3 degrees to the longitudinal axis of the weft insertion channel.

Claims

P A T E N T A N S P R Ü C H E PATENT CLAIMS
1. Hilfsblasdüse für eine Luftdüsenwebmaschine mit einem eine Eintrittsöffhung (2a) aufweisenden Luftströmkanal (2), mit einer im Endbereich (la) der Düse (1) vorhandenen1. Auxiliary blowing nozzle for an air jet weaving machine with an air flow channel (2) having an inlet opening (2a), with one in the end region (la) of the nozzle (1)
Austrittsöffhung (2b) mit einer der Längsmittenachse (2a') des Luftströmkanals (2) gegenüber abgewinkelten Längsmittenachse (2b'), mit wenigstens einen vom Endbereich (la) ausgehenden, in Richtung der Eintrittsöffhung (2a) hin verlaufenden Längenabschnitt (3 a) mit einem etwa elliptisch ausgebildeten Außenumfang (4), mit einer die Längsmittenachse (2b') der Austrittsöffhung (2b) teilweise umgreifenden und das freie Ende des EndbereichsOutlet opening (2b) with one of the longitudinal center axis (2a ') of the air flow channel (2) opposite to the angled longitudinal center axis (2b'), with at least one longitudinal section (3a) extending from the end region (la) and running in the direction of the inlet opening (2a) an approximately elliptical outer circumference (4), with a partial encompassing the longitudinal center axis (2b ') of the outlet opening (2b) and the free end of the end region
(la) beschreibenden Hüllkurve (5), die einen Radius Rj besitzt und wobei die Hüllkurve (5) zu angrenzenden Flächen (6,7) verrundet ist, durch gekennzeichnet,(la) descriptive envelope (5), which has a radius Rj and the envelope (5) is rounded to adjacent surfaces (6,7), characterized by
- daß die Hüllkurve (5) in einem Winkel α zur Längsachse (4a) des annähernd elliptischen Außenumfanges (4) verläuft, - daß die von der Hüllkurve (5) ausgehenden Flächen (6,7) beidseitig in Art eines Daches zum Außenumfang (4) hin abfallen,- That the envelope curve (5) extends at an angle α to the longitudinal axis (4a) of the approximately elliptical outer circumference (4), - that the surfaces (6,7) emanating from the envelope curve (5) extend on both sides in the manner of a roof to the outer circumference (4th ) fall off,
- daß die Flächen (6,7) dabei einen Winkel ß einschließen,- That the surfaces (6,7) enclose an angle β,
- daß die jeweilige Fläche (6,7) mit einem Radius R2 in den Außenumfang (4) übergeht,- That the respective surface (6,7) with a radius R 2 merges into the outer circumference (4),
- daß ein Radius R3 den Radius R, der Hüllkurve (5) mit dem Außenumfang (4) verbindet und- That a radius R 3 connects the radius R, the envelope (5) to the outer circumference (4) and
- daß jede Fläche (6,7) einen in einem Winkel γ zum Außenumfang (4) hin abfallenden, bogenförmigen Flächenabschnitts (6a,7a) ausbildet, dessen Übergänge zu den angrenzenden Flächen (6,7) und zu dem Außenumfang (4) verrundet sind.- That each surface (6,7) forms an arcuate surface section (6a, 7a) sloping down at an angle γ to the outer circumference (4), the transitions to the adjacent surfaces (6,7) and to the outer circumference (4) rounded are.
2. Hilfsblasdüse nach Anspruch 1, dadurch gekennzeichnet, daß die Flächenabschnitte2. Auxiliary blowing nozzle according to claim 1, characterized in that the surface sections
(6a,7a) einander diagonal gegenüberliegend sind.(6a, 7a) are diagonally opposite to each other.
3. Hilfsblasdüse nach Anspruch 1, dadurch gekennzeichnet, daß die Flächen (6,7) nach außen gewölbt sind.3. Auxiliary blowing nozzle according to claim 1, characterized in that the surfaces (6,7) are curved outwards.
4. Hilfsblasdüse nach Anspruch 1, dadurch gekennzeichnet, daß die Flächen (6,7) ebenflächig sind.4. auxiliary blowing nozzle according to claim 1, characterized in that the surfaces (6,7) are even.
5. Hilfsblasdüse nach Ansprach 1, dadurch gekennzeichnet, daß der Radius R, > 3700 μm, der Radius R2> 300 μm und der Radius R3 etwa 1000 μm beträgt.5. Auxiliary blowing nozzle according spoke 1, characterized in that the radius R,> 3700 microns, the radius R 2 > 300 microns and the radius R 3 is about 1000 microns.
6. Hilfsblasdüse nach Ansprach 1, dadurch gekennzeichnet, daß der Winkel > 36. Auxiliary blow nozzle according spoke 1, characterized in that the angle> 3
Winkelgrade, der Winkel ß etwa 120 Winkelgrade und der Winkel γ kleiner 60 Winkelgrade ist.Degrees, the angle ß is approximately 120 degrees and the angle γ is less than 60 degrees.
7. Hilfsblasdüse nach Ansprach 3, dadurch gekennzeichnet, daß die Wölbung einen Radius R4 < 1000 μm besitzt.7. Auxiliary blowing nozzle according spoke 3, characterized in that the curvature has a radius R 4 <1000 microns.
8. Hilfsblasdüse nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß bei mehreren hintereinander angeordneten Hilfsblasdüsen (1) die Hüllkurve (5) und die Flächen (6,7) parallel zu den Kettfäden ausgerichtet sind und dabei die Flächenabschnitte (6a,7a) etwa parallel zu den Kettfäden einer Webkette verlaufen. 8. Auxiliary blowing nozzle according to one of the preceding claims, characterized in that in the case of a plurality of auxiliary blowing nozzles arranged one behind the other, the envelope curve (5) and the surfaces (6, 7) are aligned parallel to the warp threads and the surface sections (6a, 7a) approximately run parallel to the warp threads of a warp.
EP98965080A 1997-11-20 1998-11-18 Auxiliary blow nozzle for an air jet weaving machine Expired - Lifetime EP0968327B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19751354 1997-11-20
DE19751354A DE19751354C1 (en) 1997-11-20 1997-11-20 Auxiliary blowing nozzle for an air jet loom
PCT/DE1998/003412 WO1999027171A1 (en) 1997-11-20 1998-11-18 Auxiliary blow nozzle for an air jet weaving machine

Publications (2)

Publication Number Publication Date
EP0968327A1 true EP0968327A1 (en) 2000-01-05
EP0968327B1 EP0968327B1 (en) 2001-05-30

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US (1) US6138719A (en)
EP (1) EP0968327B1 (en)
JP (1) JP2000508391A (en)
AT (1) ATE201728T1 (en)
DE (2) DE19751354C1 (en)
WO (1) WO1999027171A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1012608A3 (en) * 1999-04-14 2001-01-09 Picanol Nv Nozzle for a weaving machine.
BE1015155A3 (en) * 2002-10-23 2004-10-05 Picanol Nv SYRINGE nozzle for supporting a weft thread into a weaving machine.
BE1015261A3 (en) * 2002-12-19 2004-12-07 Picanol Nv SPRAY NOZZLE SUPPORTING a weft thread in a weaving machine.
JP7311297B2 (en) * 2018-10-16 2023-07-19 津田駒工業株式会社 Sub-nozzle of air jet loom
EP3640382B1 (en) * 2018-10-16 2021-07-07 Tsudakoma Kogyo Kabushiki Kaisha Sub-nozzle for air jet loom
US11214450B1 (en) * 2021-03-11 2022-01-04 Cciip Llc Method of proofing an innerduct/microduct and proofing manifold

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7406857A (en) * 1974-05-21 1975-11-25 Rueti Te Strake Bv HOLLOW NEEDLE-SHAPED NOZZLE WITH A NOZZLE OPENED NEAR THE TIP, IN THE SIDEWALL.
CH610222A5 (en) * 1976-09-07 1979-04-12 Rueti Ag Maschf Process for producing a nozzle and use of the nozzle
CH650035A5 (en) * 1980-11-28 1985-06-28 Sulzer Ag Auxiliary blowing nozzle for an air-jet weaving machine
CH656905A5 (en) * 1982-11-30 1986-07-31 Sulzer Ag Blowing nozzle for pneumatic weaving machines
EP0145824B1 (en) * 1983-12-09 1987-03-04 GebràœDer Sulzer Aktiengesellschaft Auxiliary nozzle for an air jet loom
JPH0665777B2 (en) * 1987-11-11 1994-08-24 日本タングステン株式会社 Manufacturing method of auxiliary nozzle for air jet loom
IT1230003B (en) * 1989-04-21 1991-09-20 Somet Soc Mec Tessile NOZZLE MANUFACTURING PROCEDURE FOR AIR WEAVING FRAME.
JPH07189078A (en) * 1993-12-28 1995-07-25 Nippon Tungsten Co Ltd Sub nozzle of air jet type weaving machine
US5857606A (en) * 1997-11-12 1999-01-12 Tseng; Ching-Kun Ultrahigh speed suction gun
DE29720595U1 (en) * 1997-11-20 1998-02-05 Dornier Gmbh Lindauer Auxiliary blowing nozzle, in particular for an air jet loom

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9927171A1 *

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DE19751354C1 (en) 1999-06-17
ATE201728T1 (en) 2001-06-15
JP2000508391A (en) 2000-07-04
DE59800797D1 (en) 2001-07-05
EP0968327B1 (en) 2001-05-30
US6138719A (en) 2000-10-31
WO1999027171A1 (en) 1999-06-03

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