EP0735170A1 - Method for improving the weft inserting performance in an air jet loom and inserting nozzle for carrying out the method - Google Patents
Method for improving the weft inserting performance in an air jet loom and inserting nozzle for carrying out the method Download PDFInfo
- Publication number
- EP0735170A1 EP0735170A1 EP96101390A EP96101390A EP0735170A1 EP 0735170 A1 EP0735170 A1 EP 0735170A1 EP 96101390 A EP96101390 A EP 96101390A EP 96101390 A EP96101390 A EP 96101390A EP 0735170 A1 EP0735170 A1 EP 0735170A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- air flow
- thread feed
- feed tube
- nozzle
- weft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000003780 insertion Methods 0.000 claims abstract description 7
- 230000037431 insertion Effects 0.000 claims abstract description 7
- 230000001133 acceleration Effects 0.000 claims description 5
- 238000009941 weaving Methods 0.000 claims description 4
- 238000005259 measurement Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Images
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
- D03D47/3013—Main nozzles
Definitions
- the invention relates to a method for increasing the performance of weft insertion into a shed of an air jet loom and insertion nozzle for carrying out the method.
- An entry nozzle for an air weaving machine with adjustable air flow acceleration is previously known from EP 0 239 137 B1.
- This entry nozzle essentially consists of a nozzle housing with an axially displaceable or fixedly arranged thread supply tube, an air supply channel for the nozzle medium which is concentrically enclosed by the nozzle housing, and a mixing tube which is in the extension of the thread supply tube and optionally axially displaceable or fixed in the housing is arranged, and wherein the air supply channel ends between the end of the thread supply tube and the mixing tube.
- the object of the invention is therefore to provide a method for gentle entrainment of the weft thread and at the same time for increasing the performance of the entry nozzle of a weaving machine. It is also an object of the invention to provide an entry nozzle for carrying out the method.
- Tests by the applicant have based on comparative measurements between the invention. trained entry nozzle and known entry nozzles shown that at a pressure of the air flow between 1.0 to 6.0 bar, the force transmission to the weft by about 10% to 30%, depending on the ratio of the end section-outer diameter of the weft feed tube to the start section-inner diameter of the mixing tube , is higher.
- the invention Solution guaranteed, and this is confirmed by measurement results from the applicant, that at a pre-pressure of 1.0 bar there is suction at the entrance of the weft feed tube of below - 100 mbar, which guarantees the threading function of the weft thread in the entry nozzle.
- the machine speed could be increased to 128% without the quality of the fabric being adversely affected.
- the entry nozzle 1 for inserting the weft thread 2 in a shed consists according to Fig. 1 from a thread feed tube 3, from a concentrically surrounded by a housing 4 air supply duct 5 for an air pressure supplied via the nozzle 6, see also arrow 7, and from a mixing tube 8, which is in the extension of the thread feed tube 3 within the feed nozzle 1 is arranged.
- Both the thread feed tube 3 and the mixing tube 8 can be arranged axially displaceably in the direction of the double arrows 9 and 10 in the housing 4, in order to overlap, see also detail Z, between the end section 3a of the thread feed tube 3 and the start section 8a of the mixing tube 8 to accelerate the air flow.
- the end section 3a is formed, for example, in the manner of an outer cone and the beginning section 8a, for example in the manner of an inner cone.
- An air flow channel 5a with an annular cross-sectional area is formed between the outer cone and the inner cone, see also FIG. 3, the cross section of which is variable when the thread feed tube 3 or the mixing tube 8 is axially adjustable in order to give the air flow the desired acceleration.
- the annular air flow channel 5a opens into a circularly enclosed air flow channel 8b of the mixing tube 8.
- the cross-sectional area of the air flow channel 8b is larger compared to the cross-sectional area of the air flow channel 5a.
- the end section 3a of the thread feed pipe 3 has the invention. eg incisions 11, for example in the manner of a notch, which are preferably arranged symmetrically about the central axis 12 of the thread feed tube 3. It has been found to be advantageous when inserting the weft thread if the opening angle of the incision in question is 11 ⁇ 90 °.
- FIGS. 4 and 5 show the end section 3a of the thread feed tube 3, the wall of which has more than 2 incisions 11.
- openings 13, 14, 15 are provided in the manner of through bores, which are made in one or more circumferential rows in the wall of the end section 3a. It is advantageous if the bores are arranged at an acute angle to the central axis 12 in the air flow direction, see also arrows 7. It is also advantageous if the cross-sectional areas of both the incisions 11 and the rows of bores 13, 14, 15 increase in the direction of the end face of the thread feed tube 3 in the end section 3a.
- the air supply takes place via the nozzle 6 with a certain pressure potential.
- This air flow enters the annular air supply duct 5 and the tapered one Air flow channel 5a, which is formed by the overlap of the start portion 8a of the mixing tube 8 and the end portion 3a of the thread feed tube 3.
- the air flow experiences an acceleration, as a result of which it can assume a supersonic speed.
- the invention is achieved. the expansion process is shifted into the thread feed tube 3 by means of precautions in the end section 3a of the thread feed tube 3. This has the consequence that the air flow speed is reduced and the weft thread is carried gently and at an earlier point in time than is known.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Looms (AREA)
- Coiling Of Filamentary Materials In General (AREA)
Abstract
Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren zur schonenden Mitnahme eines Schußfadens beim Schußfadeneintrag und zugleich zur Steigerung der Leistungsfähigkeit der Eintragsdüse zu schaffen und eine Eintragsdüse zur Durchführung des Verfahrens anzugeben. Verfahrensgemäß wird die Aufgabe dadurch gelöst, daß die Expansion eines in der Eintragsdüse beschleunigten Eintragsmediums und die Mitnahme des Schußfadens vor dem Eintritt des Eintragsmediums in das Mischrohr der Eintragsdüse erfolgt. Dazu weist das Fadenzufuhrrohr 3 der Eintragsdüse 1 im ausgangsseitigen Endabschnitt 3a mehrere in seinem Umfang verteilt eingebrachte Einschnitte 11 oder Durchbrüche 13,14,15 auf. <IMAGE>The invention has for its object to provide a method for gentle entrainment of a weft thread when weft insertion and at the same time to increase the performance of the insertion nozzle and to specify an insertion nozzle for performing the method. According to the method, the object is achieved in that the expansion of an entry medium accelerated in the entry nozzle and the entrainment of the weft take place before the entry medium enters the mixing tube of the entry nozzle. For this purpose, the thread feed tube 3 of the feed nozzle 1 has a plurality of incisions 11 or openings 13, 14, 15 made in its circumference in the outlet end section 3a. <IMAGE>
Description
Die Erfindung betrifft ein Verfahren zur Leistungssteigerung beim Schußfadeneintrag in ein Webfach einer Luftdüsenwebmaschine und Eintragsdüse zur Durchführung des Verfahrens.The invention relates to a method for increasing the performance of weft insertion into a shed of an air jet loom and insertion nozzle for carrying out the method.
Es ist allgemein bekannt, daß beim Schußeintrag mittels Luftstrahl die Zugkraftübertragung auf den Schußfaden innerhalb des Mischrohres der Eintragsdüse erfolgt. Zur Beeinflussung der Strömungseigenschaften und damit auch der Zugkraftübertragung auf den Schußfaden wird die unter einem bestimmten Druck der Eintragsdüse zugeführte Luftströmung innerhalb der Eintragsdüse durch Querschnittsveränderung des Luftzufuhrkanals in Richtung Schußeintrag beschleunigt. Die beschleunigte Luftströmung gelangt daraufhin in einen gegenüber dem Beschleunigungsbereich vergrößerten Innenquerschnitt eines Mischrohres, expandiert darin und nimmt dabei den Schußfaden zum Eintrag in das Webfach mit. Im Stadium des Übergangs der Luftströmung erfolgt dabei eine sprungartige Expansion der Luftströmung. Diese sprungartige Expansion verursacht, vom Ausgang des Luftzufuhrkanals bis in den Eingangsbereich des Mischrohres hinein, Strömungsturbulenzen, die sich negativ auf die Struktur des Schußfadens und auf dessen Mitnahmeverhalten, also auf die Zugkraftübertragung und damit auf die Schußfadenflugzeit über die Webbreite auswirken.It is generally known that when the weft is inserted by means of an air jet, the tensile force is transferred to the weft within the mixing tube of the entry nozzle. In order to influence the flow properties and thus also the transmission of tensile force to the weft thread, the air flow supplied to the entry nozzle under a certain pressure is accelerated by changing the cross section of the air supply channel in the direction of the weft entry. The accelerated air flow then reaches an internal cross section of a mixing tube which is enlarged compared to the acceleration range, expands therein and takes the weft thread with it for entry into the shed. At the stage of the transition of the air flow there is a sudden expansion of the air flow. This sudden expansion causes flow turbulence, from the exit of the air supply duct to the entrance area of the mixing tube, which has a negative effect on the structure of the weft thread and on its entrainment behavior, i.e. on the tensile force transmission and thus on the weft flight time over the weaving width.
Eine Eintragsdüse für eine Luftwebmaschine mit einstellbarer Luftströmungsbeschleunigung ist aus der EP 0 239 137 B1 vorbekannt.An entry nozzle for an air weaving machine with adjustable air flow acceleration is previously known from EP 0 239 137 B1.
Diese Eintragsdüse besteht im wesentlichen aus einem Düsengehäuse mit einem darin axial verschiebbar oder fest angeordneten Fadenzufuhrrohr, einem Luftzufuhrkanal für das Düsenmedium, der konzentrisch von dem Düsengehäuse umschlossen ist, und einem Mischrohr, das in der Verlängerung des Fadenzufuhrrohres und gegebenenfalls axial verschiebbar oder fest im Gehäuse angeordnet ist, und wobei der Luftzufuhrkanal zwischen dem Ende des Fadenzufuhrrohres und dem Mischrohr endet.This entry nozzle essentially consists of a nozzle housing with an axially displaceable or fixedly arranged thread supply tube, an air supply channel for the nozzle medium which is concentrically enclosed by the nozzle housing, and a mixing tube which is in the extension of the thread supply tube and optionally axially displaceable or fixed in the housing is arranged, and wherein the air supply channel ends between the end of the thread supply tube and the mixing tube.
Auch hier expandiert die aus dem Luftzufuhrkanal austretende, beschleunigte Luftströmung sprungartig und führt zu Strömungsturbulenzen am Ausgang des Luftzufuhrkanals, die sich bis in den Eingang des Mischrohres fortsetzen. Diese Strömungsturbulenzen wirken sich nachteilig auf die Struktur des Schußfadens und auf dessen Transportverhalten aus.Here, too, the accelerated air flow emerging from the air supply duct expands abruptly and leads to flow turbulence at the outlet of the air supply duct, which continues into the inlet of the mixing tube. These flow turbulences adversely affect the structure of the weft thread and its transport behavior.
Aufgabe der Erfindung ist es daher, ein Verfahren zur schonenden Mitnahme des Schußfadens und zugleich zur Steigerung der Leistung der Eintragsdüse einer Webmaschine zu schaffen. Ferner ist es Aufgabe der Erfindung, eine Eintragsdüse zur Durchführung des Verfahrens anzugeben.The object of the invention is therefore to provide a method for gentle entrainment of the weft thread and at the same time for increasing the performance of the entry nozzle of a weaving machine. It is also an object of the invention to provide an entry nozzle for carrying out the method.
Die Aufgabe wird erfindungsgem. durch die kennzeichnenden Merkmale der Ansprüche 1 und 4 gelöst.The object is achieved. solved by the characterizing features of
Mit der erfindungsgem. Verlagerung des Beginns der Expansion der Luftströmung und mit der erfindungsgem. Ausbildung des Schußfadenzufuhrrohres wird die sprungartige Expansion der Luftströmung beim Übergang in das Mischrohr vermieden. Damit wird die Leistungsfähigkeit bekannter Eintrag- bzw. Hauptdüsen verbessert. Die Struktur des Schußfadens wird nicht angegriffen.With the invention. Shifting the beginning of the expansion of the air flow and with the invention. Formation of the weft feed tube prevents the abrupt expansion of the air flow during the transition into the mixing tube. This improves the performance of known entry or main nozzles. The structure of the weft thread is not attacked.
Versuche der Anmelderin haben anhand von Vergleichsmessungen zwischen der erfindungsgem. ausgebildeten Eintragsdüse und bekannten Eintragsdüsen gezeigt, daß bei einem Druck der Luftströmung zwischen 1,0 bis 6,0 bar die Kraftübertragung auf den Schußfaden um etwa 10 % bis 30 %, je nach dem Verhältnis Endabschnitt-Außendurchmesser des Schußfadenzufuhrrohres zum Anfangsabschnitt-Innendurchmesser des Mischrohres, höher liegt.
Die erfindungsgem. Lösung garantiert, und dies bestätigen Messergebnisse bei der Anmelderin, daß bei einem Vordruck von 1,0 bar ein Sog am Eingang des Schußfadenzufuhrrohres von unter - 100 mbar herrscht, womit die Einfädelungsfunktion des Schußfadens in die Eintragsdüse gewährleistet ist.Tests by the applicant have based on comparative measurements between the invention. trained entry nozzle and known entry nozzles shown that at a pressure of the air flow between 1.0 to 6.0 bar, the force transmission to the weft by about 10% to 30%, depending on the ratio of the end section-outer diameter of the weft feed tube to the start section-inner diameter of the mixing tube , is higher.
The invention. Solution guaranteed, and this is confirmed by measurement results from the applicant, that at a pre-pressure of 1.0 bar there is suction at the entrance of the weft feed tube of below - 100 mbar, which guarantees the threading function of the weft thread in the entry nozzle.
Ferner wurde aus den Vergleichsmessungen zur Fadenflugzeit festgestellt, daß beim Einsatz von Faser- und Filamentgarnen im Schuß mit der erfindungsgem. ausgebildeten Eintragsdüse eindeutig kürzere Fadenflugzeiten erzielt werden. Den Vergleichsmessungen lagen gleiche Druckverhältnisse an den Eintragsdüsen zugrunde.Furthermore, it was found from the comparative measurements of the thread flight time that when using fiber and filament yarns in weft with the invention. trained entry nozzle clearly shorter thread flight times can be achieved. The comparative measurements were based on the same pressure conditions at the entry nozzles.
Bei der Herstellung von Glasgewebe z.B., konnte die Maschinendrehzahl auf 128 % gesteigert werden, ohne daß die Qualität des Gewebes nachteilig beeinflußt wurde.In the production of glass fabric, for example, the machine speed could be increased to 128% without the quality of the fabric being adversely affected.
Die Erfindung soll nachstehend an einem Ausführungsbeispiel näher erläutert werden.The invention will be explained in more detail below using an exemplary embodiment.
In den Zeichnungen zeigen:
- Fig. 1:
- einen Teil einer Eintragsdüse in schematischer Darstellung, im Längsschnitt,
- Fig. 2:
- den Endabschnitt des Fadenzufuhrrohres mit dem Anfangsabschnitt des Mischrohres als Einzelheit Z gem. Fig. 1,
- Fig. 3:
- einen Schnitt durch die Einzelheit Z gem. der Linie A-A in Fig. 2,
- Fig. 4:
- den Endabschnitt des Fadenzufuhrrohres mit mehreren Einschnitten
- Fig. 5:
- die Seitenansicht des Fadenzufuhrrohres gem. Richtung B,
- Fig. 6:
- den Endabschnitt des Fadenzufuhrrohres mit mehreren Durchbrüchen,
- Fig. 7:
- den Endabschnitt des Fadenzufuhrrohres im Schnitt gem. der Linie C-C in Fig. 6.
- Fig. 1:
- a part of an entry nozzle in a schematic representation, in longitudinal section,
- Fig. 2:
- the end portion of the thread feed tube with the initial portion of the mixing tube as a detail Z acc. Fig. 1
- Fig. 3:
- a section through the detail Z acc. the line AA in Fig. 2,
- Fig. 4:
- the end portion of the thread feed tube with several cuts
- Fig. 5:
- the side view of the thread feed pipe acc. Direction B,
- Fig. 6:
- the end section of the thread feed tube with several openings,
- Fig. 7:
- the end section of the thread feed pipe in section acc. the line CC in FIG. 6.
Die Eintragsdüse 1 zum Eintragen des Schußfadens 2 in ein nicht dargestelltes Webfach besteht gem. Fig. 1 aus einem Fadenzufuhrrohr 3, aus einem von einem Gehäuse 4 konzentrisch umgegebenen Luftzufuhrkanal 5 für eine unter Druck über den Stutzen 6 zugeführte Luftströmung, siehe auch Pfeil 7, und aus einem Mischrohr 8, das in der Verlängerung des Fadenzufuhrrohres 3 innerhalb der Eintragsdüse 1 angeordnet ist.
Sowohl das Fadenzufuhrrohr 3 als auch das Mischrohr 8 kann in Richtung der Doppelpfeile 9 bzw. 10 in dem Gehäuse 4 axial verschiebbar angeordnet sein, um in einem Überlappungsbereich, siehe auch Einzelheit Z, zwischen dem Endabschnitt 3a des Fadenzufuhrrohres 3 und dem Anfangsabschnitt 8a des Mischrohres 8 die Luftströmung zu beschleunigen. Dazu ist der Endabschnitt 3a z.B. in Art eines Außenkonus und der Anfangsabschnitt 8a z.B. in Art eines Innenkonus ausgebildet.The entry nozzle 1 for inserting the weft thread 2 in a shed, not shown, consists according to Fig. 1 from a
Both the
Eine zylindrische Ausbildung dieser Abschnitte ist denkbar.A cylindrical design of these sections is conceivable.
Zwischen dem Außenkonus und dem Innenkonus ist ein Luftströmungskanal 5a mit einer ringförmigen Querschnittsfläche ausgebildet, siehe auch Fig. 3, dessen Querschnitt bei axial verstellbarer Anordnung des Fadenzufuhrrohres 3 oder des Mischrohres 8 variabel ist, um der Luftströmung die gewünschte Beschleunigung zu verleihen.
Der ringförmige Luftströmungskanal 5a mündet in einem kreisförmig umschlossenen Luftströmungskanal 8b des Mischrohres 8.An
The annular
Die Querschnittsfläche des Luftströmungskanales 8b ist im Vergleich zur Querschnittsfläche des Luftströmungskanales 5a größer dimensioniert.
Der Endabschnitt 3a des Fadenzufuhrrohres 3 weist erfindungsgem. z.B. Einschnitte 11, z.B. in Art einer Kerbe auf, die vorzugsweise symmetrisch um die Mittenachse 12 des Fadenzufuhrrohres 3 angeordnet sind.
Als vorteilhaft hat sich beim Schußfadeneintragen herausgestellt, wenn der Öffnungswinkel des betreffenden Einschnittes 11 < 90 ° ist.
Die Figuren 4 und 5 zeigen den Endabschnitt 3a des Fadenzufuhrrohres 3, dessen Wandung mehr als 2 Einschnitte 11 aufweist.The cross-sectional area of the
The
It has been found to be advantageous when inserting the weft thread if the opening angle of the incision in question is 11 <90 °.
FIGS. 4 and 5 show the
In Fig. 6 sind anstelle von Einschnitten 11 Durchbrüche 13, 14, 15 in Art von Durchgangsbohrungen vorgesehen, die in einer oder mehreren umlaufenden Reihen in die Wandung des Endabschnittes 3a eingebracht sind.
Von Vorteil ist dabei, wenn die Bohrungen in einem spitzen Winkel zur Mittenachse 12 in Luftströmungsrichtung, siehe auch Pfeile 7, angeordnet sind.
Von Vorteil ist ferner, wenn die Querschnittsflächen sowohl der Einschnitte 11 als auch der Reihen von Bohrungen 13, 14, 15 in Richtung der ausgangsseitigen Stirnfläche des Fadenzufuhrrohres 3 im Endabschnitt 3a zunehmen.In FIG. 6, instead of
It is advantageous if the bores are arranged at an acute angle to the
It is also advantageous if the cross-sectional areas of both the
Die Funktionsweise der erfindungsgem. Lösung ist wie folgt:The operation of the invention. Solution is as follows:
Über den Stutzen 6 erfolgt die Luftzufuhr mit einem bestimmten Druckpotential. Dieser Luftstrom gelangt in den ringförmigen Luftzufuhrkanal 5 und in den sich verjüngenden
Luftströmungskanal 5a, der durch die Überlappung des Anfangsabschnittes 8a des Mischrohres 8 und dem Endabschnitt 3a des Fadenzufuhrrohres 3 gebildet wird. Hier erfährt die Luftströmung eine Beschleunigung, in deren Ergebnis diese eine Überschallgeschwindigkeit annehmen kann.
Um nun beim Übergang der beschleunigten Luftströmung von dem sich verjüngenden Querschnitt des Luftströmungskanals 5a in den kreisförmigen Querschnitt des Luftströmungskanals 8b des Mischrohres 8 eine sprungartige Expansion der Luftströmung mit deren nachteiligen Folgen auf den Schußfaden zu unterbinden und vielmehr eine sanfte Expansion zu erreichen, wird erfindungsgem. der Expansionsvorgang durch Vorkehrungen im Endabschnitt 3a des Fadenzufuhrrohres 3 in das Fadenzufuhrrohr 3 verlagert. Dies hat zur Folge, daß dadurch die Luftströmungsgeschwindigkeit reduziert wird und der Schußfaden schonend und zu einem früheren Zeitpunkt als bekannt mitgenommen wird.The air supply takes place via the nozzle 6 with a certain pressure potential. This air flow enters the annular
In order to prevent a sudden expansion of the air flow with its disadvantageous consequences on the weft thread and rather to achieve a gentle expansion during the transition of the accelerated air flow from the tapering cross section of the
- 0101
- EintragsdüseEntry nozzle
- 0202
- SchußfadenWeft
- 0303
- FadenzufuhrrohrThread feed tube
- 03a03a
- EndabschnittEnd section
- 0404
- Gehäusecasing
- 0505
- LuftzufuhrkanalAir supply duct
- 05a05a
- LuftströmungskanalAir flow channel
- 0606
- StutzenSupport
- 0707
- Pfeilarrow
- 0808
- MischrohrMixing tube
- 08a08a
- AnfangsabschnittInitial section
- 08b08b
- LuftströmungskanalAir flow channel
- 0909
- DoppelpfeilDouble arrow
- 1010th
- DoppepfeilDouble arrow
- 1111
- Einschnittincision
- 1212th
- MittenachseCenter axis
- 1313
- Durchbruchbreakthrough
- 1414
- Durchbruchbreakthrough
- 1515
-
Durchbruch
Öffnungswinkelbreakthrough
Opening angle
Claims (7)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19511439A DE19511439C1 (en) | 1995-03-29 | 1995-03-29 | System to increase productivity of jet loom |
| DE19511439 | 1995-03-29 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0735170A1 true EP0735170A1 (en) | 1996-10-02 |
| EP0735170B1 EP0735170B1 (en) | 2001-05-30 |
Family
ID=7758005
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP96101390A Expired - Lifetime EP0735170B1 (en) | 1995-03-29 | 1996-02-01 | Method for improving the weft inserting performance in an air jet loom and inserting nozzle for carrying out the method |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US5697405A (en) |
| EP (1) | EP0735170B1 (en) |
| JP (1) | JP2635954B2 (en) |
| DE (2) | DE19511439C1 (en) |
Families Citing this family (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW484184B (en) | 1998-11-06 | 2002-04-21 | Canon Kk | Sample separating apparatus and method, and substrate manufacturing method |
| DE20003070U1 (en) * | 2000-02-19 | 2000-04-20 | Staedtler & Uhl, 91126 Schwabach | Fixed comb for a combing machine |
| JP4461650B2 (en) * | 2001-07-11 | 2010-05-12 | 株式会社豊田自動織機 | Weft yarn transfer nozzle in air jet loom |
| US6497257B1 (en) | 2002-02-28 | 2002-12-24 | Glen Raven, Inc. | Control of fill yarn during basket weave type patterns on air jet looms |
| DE10224078A1 (en) * | 2002-05-31 | 2003-12-18 | Dornier Gmbh Lindauer | Process for keeping a weft thread straight and weaving machine for carrying out the process |
| JP2004270080A (en) * | 2003-03-10 | 2004-09-30 | Toyota Industries Corp | Device for preventing falling-out of thread in jet loom |
| DE102004036996B3 (en) * | 2004-07-30 | 2005-12-01 | Lindauer Dornier Gmbh | Düsenwebmaschine, in particular air jet loom, with a clamping device in the mixing tube |
| JP2007308825A (en) * | 2006-05-17 | 2007-11-29 | Toyota Central Res & Dev Lab Inc | Weft insertion apparatus in air-jet loom |
| DE102006025968B3 (en) * | 2006-06-02 | 2007-11-29 | Lindauer Dornier Gmbh | Reliable clamping of weft thread in jet loom, especially air jet loom, by use of movable clamping member with clamping force magnetically reinforced in thread clamping position |
| US7748414B2 (en) * | 2006-12-12 | 2010-07-06 | Itema (Switzerland) Ltd | Method and apparatus for the insertion of weft threads |
| JP5008185B2 (en) * | 2007-03-30 | 2012-08-22 | 津田駒工業株式会社 | Weft insertion nozzle |
| JP2009007694A (en) * | 2007-06-27 | 2009-01-15 | Tsudakoma Corp | Weft-insertion nozzle and nozzle slip-out prevention member for weft used for weft-insertion nozzle |
| ITMI20090336A1 (en) * | 2009-03-06 | 2010-09-07 | Promatech Spa | LAUNCHING NOZZLE WITH WEAVING CHECKS FOR A TEXTILE FRAME WITH AIR. |
| CN103510249A (en) * | 2013-09-24 | 2014-01-15 | 吴江唯奇布业有限公司 | Air-jet loom spraying nozzle with rectification air chamber |
| CN103526433A (en) * | 2013-10-25 | 2014-01-22 | 吴江唯奇布业有限公司 | Nozzle of air-jet loom |
| CN107853285A (en) * | 2017-11-10 | 2018-03-30 | 桐乡守敬应用技术研究院有限公司 | A kind of agriculture protective materials |
| JP2023183167A (en) * | 2022-06-15 | 2023-12-27 | 株式会社豊田自動織機 | Weft conveying nozzle of air-jet loom |
| EP4442876A1 (en) | 2023-04-06 | 2024-10-09 | Picanol | Nozzle insert, nozzle device with a nozzle insert, and method for manufacturing a nozzle insert |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH610366A5 (en) * | 1976-09-27 | 1979-04-12 | Rueti Ag Maschf | Device for inserting weft threads into a shed |
| GB2085487A (en) * | 1980-10-15 | 1982-04-28 | Nissan Motor | A weft inserting nozzle of an air jet type weaving loom |
| FR2550235A1 (en) * | 1983-08-01 | 1985-02-08 | Vyzk Vyvojovy Ustav | FRAME INSERTION DEVICE FOR JET WEAVING MACHINES |
| DE3527751A1 (en) * | 1984-08-23 | 1986-02-27 | Elitex Zavody Textilniho | NOZZLE FOR INSERTING A PNEUMATIC NOZZLE WEAVING MACHINE |
| NL8503440A (en) * | 1985-12-13 | 1987-07-01 | Picanol Nv | Main weft insert blower of air jet weaving loom - has yarn entry duct to diverging duct with inlet in wall for air jets providing propulsion force in long common mixing zone |
| EP0239137A1 (en) * | 1986-02-21 | 1987-09-30 | Picanol N.V. | Device for the insertion of weft threads into the shed of air jet looms, and adjustable blowers used thereby |
| EP0273473A1 (en) * | 1986-12-02 | 1988-07-06 | Picanol N.V. | Main injector with increased tensioning force for airjet looms |
| EP0418948A1 (en) * | 1989-09-19 | 1991-03-27 | Picanol N.V. | Blow device for weft threads in weaving machines |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4550752A (en) * | 1980-11-17 | 1985-11-05 | Ruti-Te Strake B.V. | Method for conveying a flexible thread by means of pressurized gas |
| US5282779A (en) * | 1991-12-09 | 1994-02-01 | Mitsubishi Rayon Company Ltd. | Air jet for producing filter plug for cigarette |
| IT1266636B1 (en) * | 1993-10-27 | 1997-01-09 | Nuovo Pignone Spa | MAIN NOZZLE PERFECTED FOR AIR TEXTILE FRAME |
-
1995
- 1995-03-29 DE DE19511439A patent/DE19511439C1/en not_active Expired - Fee Related
-
1996
- 1996-02-01 DE DE59606975T patent/DE59606975D1/en not_active Expired - Lifetime
- 1996-02-01 EP EP96101390A patent/EP0735170B1/en not_active Expired - Lifetime
- 1996-03-19 JP JP8063409A patent/JP2635954B2/en not_active Expired - Lifetime
- 1996-03-27 US US08/624,796 patent/US5697405A/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH610366A5 (en) * | 1976-09-27 | 1979-04-12 | Rueti Ag Maschf | Device for inserting weft threads into a shed |
| GB2085487A (en) * | 1980-10-15 | 1982-04-28 | Nissan Motor | A weft inserting nozzle of an air jet type weaving loom |
| FR2550235A1 (en) * | 1983-08-01 | 1985-02-08 | Vyzk Vyvojovy Ustav | FRAME INSERTION DEVICE FOR JET WEAVING MACHINES |
| DE3527751A1 (en) * | 1984-08-23 | 1986-02-27 | Elitex Zavody Textilniho | NOZZLE FOR INSERTING A PNEUMATIC NOZZLE WEAVING MACHINE |
| NL8503440A (en) * | 1985-12-13 | 1987-07-01 | Picanol Nv | Main weft insert blower of air jet weaving loom - has yarn entry duct to diverging duct with inlet in wall for air jets providing propulsion force in long common mixing zone |
| EP0239137A1 (en) * | 1986-02-21 | 1987-09-30 | Picanol N.V. | Device for the insertion of weft threads into the shed of air jet looms, and adjustable blowers used thereby |
| EP0273473A1 (en) * | 1986-12-02 | 1988-07-06 | Picanol N.V. | Main injector with increased tensioning force for airjet looms |
| EP0418948A1 (en) * | 1989-09-19 | 1991-03-27 | Picanol N.V. | Blow device for weft threads in weaving machines |
Also Published As
| Publication number | Publication date |
|---|---|
| DE59606975D1 (en) | 2001-07-05 |
| DE19511439C1 (en) | 1996-03-14 |
| JPH0921035A (en) | 1997-01-21 |
| EP0735170B1 (en) | 2001-05-30 |
| JP2635954B2 (en) | 1997-07-30 |
| US5697405A (en) | 1997-12-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0735170B1 (en) | Method for improving the weft inserting performance in an air jet loom and inserting nozzle for carrying out the method | |
| DE4225243C2 (en) | Spinning device | |
| EP1223236B1 (en) | Device for making a core yarn | |
| EP0539808B1 (en) | Apparatus for stuffer crimping synthetic filament yarns | |
| EP0224435B1 (en) | Method for making a fleece of continuous filaments, and apparatus for carrying out this method | |
| EP0223734B1 (en) | Method for making a fleece of filaments, and apparatus for carrying out the method | |
| EP0990719A1 (en) | Spinning device | |
| DE3138081C2 (en) | Weft insertion nozzle for a jet loom | |
| DE102004044345A1 (en) | Air-jet spinning device | |
| EP1614782A1 (en) | Method and device for crimping a multifilament yarn with a stufferbox | |
| EP1288354A2 (en) | Measures for influencing the axial airflow in the spinning channel of a vortex spinning apparatus | |
| EP0023929A1 (en) | Nozzle arrangement for a jet loom | |
| DE19926492A1 (en) | Spinning device | |
| DE1279281B (en) | Device for producing fibers from thermoplastic material, in particular glass fibers | |
| EP1415027B1 (en) | Device for producing a spun yarn | |
| DE2933198C1 (en) | Apparatus for texturing yarn | |
| DE1112604B (en) | Device for the production of viscose rayon threads using the tube spinning process | |
| DE1932706C3 (en) | Texturing device | |
| EP0761855A1 (en) | Method and apparatus for stuffer-box crimping of synthetic filament yarns | |
| DE19947894C1 (en) | Appts to eddy and interlace texturized multifilament yarns has a structured yarn channel in sections in relation to the blower channel to give a stable bond unaffected during weaving/knitting | |
| DE10229085A1 (en) | Melt-spinning assembly to produce a multi-filament thread has a cooling shaft zone with a flexible surrounding ring | |
| DE69506264T2 (en) | DEVICE AND METHOD FOR PRODUCING STRANDS FROM HIGHLY ORIENTED FLASH-SPONNED CONTINUOUS FIBERS | |
| EP0065726A2 (en) | Method and apparatus for introducing at least one yarn into a texturing jet | |
| EP0606434B1 (en) | Device for spinning a sliver | |
| DE4021695A1 (en) | False twister yarn feed tube - has structured air jets to carry yarn along long tubes with low friction |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): BE CH DE FR GB IT LI |
|
| 17P | Request for examination filed |
Effective date: 19970213 |
|
| 17Q | First examination report despatched |
Effective date: 19981001 |
|
| GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
| GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
| GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
| GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
| GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
| AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): BE CH DE FR GB IT LI |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
| REF | Corresponds to: |
Ref document number: 59606975 Country of ref document: DE Date of ref document: 20010705 |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: NV Representative=s name: DIPL.-ING. ETH H. R. WERFFELI PATENTANWALT |
|
| ITF | It: translation for a ep patent filed | ||
| GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 20010810 |
|
| ET | Fr: translation filed | ||
| REG | Reference to a national code |
Ref country code: GB Ref legal event code: IF02 |
|
| PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
| 26N | No opposition filed | ||
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20050114 Year of fee payment: 10 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20050118 Year of fee payment: 10 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20060201 |
|
| GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20060201 |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST Effective date: 20061031 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20060228 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: CH Payment date: 20130220 Year of fee payment: 18 Ref country code: DE Payment date: 20130220 Year of fee payment: 18 |
|
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 59606975 Country of ref document: DE |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20140228 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20140228 |
|
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 59606975 Country of ref document: DE Effective date: 20140902 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20140902 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IT Payment date: 20150225 Year of fee payment: 20 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: BE Payment date: 20150216 Year of fee payment: 20 |