EP0323568A1 - Device for the programme controlled weft-insertion in two different sheds - Google Patents

Device for the programme controlled weft-insertion in two different sheds Download PDF

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Publication number
EP0323568A1
EP0323568A1 EP88119784A EP88119784A EP0323568A1 EP 0323568 A1 EP0323568 A1 EP 0323568A1 EP 88119784 A EP88119784 A EP 88119784A EP 88119784 A EP88119784 A EP 88119784A EP 0323568 A1 EP0323568 A1 EP 0323568A1
Authority
EP
European Patent Office
Prior art keywords
nozzle
weft
program
branch
inflow
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.)
Withdrawn
Application number
EP88119784A
Other languages
German (de)
French (fr)
Inventor
Jiri Dipl.-Ing. Zlatohlávek
Petr Dipl.-Ing. Velechovsky
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.)
Elitex Zavody Textilniho
Elitex Koncern Textilniho Strojirenstvi
Original Assignee
Elitex Zavody Textilniho
Elitex Koncern Textilniho Strojirenstvi
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 Elitex Zavody Textilniho, Elitex Koncern Textilniho Strojirenstvi filed Critical Elitex Zavody Textilniho
Publication of EP0323568A1 publication Critical patent/EP0323568A1/en
Withdrawn legal-status Critical Current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
    • D03D47/3013—Main nozzles
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D33/00—Multiple looms, i.e. two or more looms assembled together, whether or not they have mechanisms in common

Definitions

  • the invention relates to a device for program-controlled weft insertion into two different compartments of a jet loom.
  • a device for knocking two weft threads into two different compartments of a weaving machine in which the compartments are arranged side by side or one above the other. When compartments are arranged next to one another, the impact device is accommodated between the compartments; it is the so-called middle stroke.
  • a two-color patterning can be achieved by changing the program of the nozzles through which the weft thread is inserted into the compartment, the weft thread being fed continuously to the two weft weft systems.
  • devices are known which either rotate the nozzles by 180 ° or convey the weft from one side to the other with compressed air. The disadvantage of these devices is that they are complicated and consequently also expensive.
  • a weaving machine has a nozzle with two outlets and with a single common supply of the printing medium, which is directed program-controlled into one or the other outlet branch.
  • Advantages of this arrangement are a substantial reduction in the dynamic forces and the possibility of tracking the impact channel with the impact device and thus utilizing the entire impact time. Another advantage is that the weft is adjusted from one branch of the exit chamber to the other by direct flow of the printing medium and therefore very reliably.
  • a nozzle 1 arranged, for example, on a drawer of the weaving machine, not shown, between two compartments contains a nozzle body 11 in which a mixing compartment 12 and nozzle cores 13 are provided.
  • a pressure medium flows through a lateral connection 14 into the mixing compartment 12, which is designed as an annular chamber and to which an elongated outlet chamber 15 connects.
  • the entire nozzle 1 is pivotally mounted on a pin 9.
  • an extension 8 Opposite the mouth of the exit chamber 15 there is an extension 8 which has two opposing tube branches 6, 7. Each tube branch 6, 7 has an inclined, facing towards the outflow end of the tube 15 flow section and a straight flow section in the drawing plane.
  • the pressure medium passes through the connection 14 into the mixing compartment 12 and from there through the outlet chamber 15 into the right tube branch 6 of the attachment 8.
  • nozzle 1 with the outlet chamber 15 is pivoted about the pin 9, so that the pressure medium flows into the left branch 7 of the neck 8 of the outlet chamber 15.
  • the device according to the invention is arranged at least twice one above the other.
  • the choice of the starting direction of the printing medium and consequently the weft impact is determined by the weaving program, according to which the pin 9 is adjusted.

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

Abstract

The invention relates to a program-controlled weft insertion into two different sheds of a jet-weaving machine. The device contains a nozzle (1) with two outlet branches (6, 7) and with a single common feed (14) of the pressure medium which is directed by program control into a particular one of the outlet branches (6, 7) of an extension (8). <IMAGE>

Description

Die Erfindung betrifft eine Vorrichtung für den programm­gesteuerten Schußeinschlag in zwei verschiedene Fächer einer Düsenwebmaschine.The invention relates to a device for program-controlled weft insertion into two different compartments of a jet loom.

Bekannt ist eine Vorrichtung für den Einschlag von zwei Schußfäden in zwei verschiedene Fächer einer Webmaschine, bei der die Fächer nebeneinander oder übereinander ange­ordnet sind. Bei nebeneinander angeordneten Fächern ist die Einschlagsvorrichtung zwischen den Fächern unterge­bracht; es handelt sich hier um den sogenannten Mittel­schlag. Bei derart angeordneten Fächern läßt sich eine Zweifarbmusterung durch Programmwechsel der Düsen erzie­len, durch die der Schußfaden in das Fach eingetragen wird, wobei der Schußfaden den beiden Schußeinschlag­systemen ununterbrochen zugeführt wird. Zur Erzielung dieses Schußfadenwechsels sind Einrichtungen bekannt, die entweder die Düsen um 180° drehen oder den Schußfaden von der einen Seite auf die andere mit Preßluft befördern. Der Nachteil dieser Einrichtungen besteht darin, daß sie kompliziert und folglich auch kostspielig sind.A device for knocking two weft threads into two different compartments of a weaving machine is known, in which the compartments are arranged side by side or one above the other. When compartments are arranged next to one another, the impact device is accommodated between the compartments; it is the so-called middle stroke. With compartments arranged in this way, a two-color patterning can be achieved by changing the program of the nozzles through which the weft thread is inserted into the compartment, the weft thread being fed continuously to the two weft weft systems. To achieve this weft change, devices are known which either rotate the nozzles by 180 ° or convey the weft from one side to the other with compressed air. The disadvantage of these devices is that they are complicated and consequently also expensive.

Diese Mängel werden durch die erfindungsgemäße Vorrich­tung beseitigt, deren Prinzip darin besteht, daß sie für den Schußeinschlag in zwei verschiedene Fächer eine Web­maschine eine Düse mit zwei Ausgängen und mit einer einzi­gen gemeinsamen Zuführung des Druckmediums besitzt, das programmgesteuert jeweils in den einen oder in den anderen Ausgangszweig gerichtet wird.These shortcomings are eliminated by the device according to the invention, the principle of which is that it is for the weft in two different compartments a weaving machine has a nozzle with two outlets and with a single common supply of the printing medium, which is directed program-controlled into one or the other outlet branch.

Vorteile dieser Anordnung liegen in einer wesentlichen Reduzierung de dynamischen Kräfte und in der Möglichkeit, mit der Einschlagvorrichtung den Einschlagkanal zu verfol­gen und somit die gesamte Einschlagzeit auszunützen. Ein weiterer Vorteil besteht darin, daß die Verstellung des Schußfadens von einem Zweig der Ausgangskammer in den anderen durch direkten Strom des Druckmediums und daher sehr zuverlässig bewerkstelligt wird.Advantages of this arrangement are a substantial reduction in the dynamic forces and the possibility of tracking the impact channel with the impact device and thus utilizing the entire impact time. Another advantage is that the weft is adjusted from one branch of the exit chamber to the other by direct flow of the printing medium and therefore very reliably.

Weitere Vorteile und Merkmale der erfindungsgemäßen Vor­richtung ergeben sich aus der folgenden Beschreibung und aus den Zeichnungen. Es zeigen:

  • Fig. 1 ein Ausführungsbeispiel der erfindungsgemäßen Einrichtung in der Lage für Einschlag rechts,
  • Fig. 2 das Ausführungsbeispiel nach Fig. 1 in der Lage für Einschlag links.
Further advantages and features of the device according to the invention result from the following description and from the drawings. Show it:
  • 1 shows an embodiment of the device according to the invention capable of turning right,
  • Fig. 2 shows the embodiment of FIG. 1 in the position for turning left.

Eine z.B. an einer nicht dargestellten Lade der Webmaschine zwischen zwei Fächern angeordnete Düse 1 enthält einen Düsenkörper 11, in dem ein Mischfach 12 und Düsenkerne 13 vorgesehen sind. Durch einen seitlichen Anschluß 14 strömt ein Druckmedium in das als Ringkammer ausgebildete Misch­fach 12, an das eine langgestreckte Ausgangskammer 15 an­schließt. Die ganze Düse 1 ist auf einem Zapfen 9 schwenk­bar gelagert. Gegenüber der Mündung der Ausgangskammer 15 ist ein Ansatz 8 angeordnet, der zwei gegensinnige Rohr­zweige 6, 7 aufweist. Jeder Rohrzweig 6, 7 besitzt einen schrägen, zum Ausströmende des Röhrchens 15 weisenden Ein­ strömabschnitt und einen geraden Strömungsabschnitt in der Zeichenebene. Das Druckmedium gelangt durch den An­schluß 14 in das Mischfach 12 und von dort durch die Ausgangskammer 15 in den rechten Rohrzweig 6 des Ansat­zes 8.A nozzle 1 arranged, for example, on a drawer of the weaving machine, not shown, between two compartments contains a nozzle body 11 in which a mixing compartment 12 and nozzle cores 13 are provided. A pressure medium flows through a lateral connection 14 into the mixing compartment 12, which is designed as an annular chamber and to which an elongated outlet chamber 15 connects. The entire nozzle 1 is pivotally mounted on a pin 9. Opposite the mouth of the exit chamber 15 there is an extension 8 which has two opposing tube branches 6, 7. Each tube branch 6, 7 has an inclined, facing towards the outflow end of the tube 15 flow section and a straight flow section in the drawing plane. The pressure medium passes through the connection 14 into the mixing compartment 12 and from there through the outlet chamber 15 into the right tube branch 6 of the attachment 8.

In Fig. 2 ist die Düse 1 mit der Ausgangskammer 15 um den Zapfen 9 verschwenkt, so daß das Druckmedium in den linken Zweig 7 des Ansatzes 8 der Ausgangskammer 15 strömt.In Fig. 2, the nozzle 1 with the outlet chamber 15 is pivoted about the pin 9, so that the pressure medium flows into the left branch 7 of the neck 8 of the outlet chamber 15.

Für den gleichzeitigen Einschlag von zwei Schußfäden in zwei verschiedene Fächer wird die erfindungsgemäße Ein­richtung wenigstens zweifach übereinander angeordnet. Die Wahl der Ausgangsrichtung des Druckmediums und folg­lich des Schußeinschlags wird durch das Webprogramm be­stimmt, dementsprechend der Zapfen 9 verstellt wird.For the simultaneous wrapping of two weft threads in two different compartments, the device according to the invention is arranged at least twice one above the other. The choice of the starting direction of the printing medium and consequently the weft impact is determined by the weaving program, according to which the pin 9 is adjusted.

Claims (4)

1. Vorrichtung für den Schußeinschlag in zwei verschie­dene Fächer einer Webmaschine,
gekennzeichnet durch
eine Düse (1) mit zwei Ausgängen (6, 7) und einer ge­meinsamen Zuführung (14) für ein Druckmedium, das pro­grammgesteuert in jeweils einen Ausgang (6 oder 7) ge­richtet wird.1. device for weft insertion into two different compartments of a weaving machine,
marked by
a nozzle (1) with two outlets (6, 7) and a common feed (14) for a printing medium, which is directed program-controlled into one outlet (6 or 7). Vorrichtung nach Anspruch 1,
dadurch gekennzeichnet,
daß die Düse (1) einen beweglichen Düsenkörper (11) mit einer langgestreckten Ausgangskammer (15) enthält und daß die beiden als Rohrzweige ausgebildeten Ausgänge (6, 7) an einem ortsfesten Ansatz (8) angeordnet sind.Device according to claim 1,
characterized,
that the nozzle (1) contains a movable nozzle body (11) with an elongated outlet chamber (15) and that the two outlets (6, 7) designed as tubular branches are arranged on a stationary extension (8). 3. Vorrichtung nach Anspruch 1 oder 2,
dadurch gekennzeichnet,
daß die das Druckmedium in den jeweiligen Rohrzweig (6, 7) des Ansatzes (8) richtende Düse (11, 15) an einem Zapfen (9) programmgesteuert verschwenkbar ge­lagert ist.3. Device according to claim 1 or 2,
characterized,
that the nozzle (11, 15) directing the pressure medium into the respective pipe branch (6, 7) of the attachment (8) is pivotally mounted on a pin (9) in a program-controlled manner. 4. Vorrichtung nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet,
daß jeder Rohrzweig (6, 7) einen schrägen Einströmab­schnitt und einen geraden Strömungsabschnitt enthält, wobei die beiden Einströmabschnitte derart an Ansatz (8) angeordnet sind, daß sich die Öffnung des verschwenk­baren Düsenröhrchens (15) in seiner einen oder anderen Endstellung vor jeweils einer Einströmöffnung des einen oder anderen Rohrzweigs (6, 7) befindet.4. Device according to one of claims 1 to 3,
characterized,
that each tube branch (6, 7) contains an inclined inflow section and a straight flow section, the two inflow sections being arranged on the projection (8) in such a way that the opening of the pivotable nozzle tube (15) is in one or the other end position in front of one inflow opening one or the other pipe branch (6, 7).
EP88119784A 1987-12-02 1988-11-28 Device for the programme controlled weft-insertion in two different sheds Withdrawn EP0323568A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CS8737/87 1987-12-02
CS873787A CS276996B6 (en) 1987-12-02 1987-12-02 device for weft picking into two different sheds of nozzle loom

Publications (1)

Publication Number Publication Date
EP0323568A1 true EP0323568A1 (en) 1989-07-12

Family

ID=5438367

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88119784A Withdrawn EP0323568A1 (en) 1987-12-02 1988-11-28 Device for the programme controlled weft-insertion in two different sheds

Country Status (2)

Country Link
EP (1) EP0323568A1 (en)
CS (1) CS276996B6 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2048934A1 (en) * 1969-10-08 1971-04-22 Ehtex Zavodytextilmho strojirenst vi generalnirzeditelstvi, Reichenberg (Tschechoslowakei) Weaving processes for unprotected looms and facilities for carrying out this process
GB2079332A (en) * 1980-06-24 1982-01-20 Eleitex Koncern Textilniho Str Multiple jet weaving looms
GB2139654A (en) * 1983-05-13 1984-11-14 Elitex Zavody Textilniho A device for inserting two weft threads into two warp sheds in a loom with central jet insertion

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2048934A1 (en) * 1969-10-08 1971-04-22 Ehtex Zavodytextilmho strojirenst vi generalnirzeditelstvi, Reichenberg (Tschechoslowakei) Weaving processes for unprotected looms and facilities for carrying out this process
GB2079332A (en) * 1980-06-24 1982-01-20 Eleitex Koncern Textilniho Str Multiple jet weaving looms
GB2139654A (en) * 1983-05-13 1984-11-14 Elitex Zavody Textilniho A device for inserting two weft threads into two warp sheds in a loom with central jet insertion

Also Published As

Publication number Publication date
CS276996B6 (en) 1992-11-18
CS8708737A1 (en) 1990-12-13

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