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EP1072706A2 - Monitoring device for looms with flexible pressure hoses - Google Patents

Monitoring device for looms with flexible pressure hoses Download PDF

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Publication number
EP1072706A2
EP1072706A2 EP00112138A EP00112138A EP1072706A2 EP 1072706 A2 EP1072706 A2 EP 1072706A2 EP 00112138 A EP00112138 A EP 00112138A EP 00112138 A EP00112138 A EP 00112138A EP 1072706 A2 EP1072706 A2 EP 1072706A2
Authority
EP
European Patent Office
Prior art keywords
conductors
pressure
current
weaving machine
weft insertion
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Withdrawn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
EP00112138A
Other languages
German (de)
French (fr)
Other versions
EP1072706A3 (en
Inventor
Peter D. Dornier
Herbert Müller
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 EP1072706A2 publication Critical patent/EP1072706A2/en
Publication of EP1072706A3 publication Critical patent/EP1072706A3/en
Withdrawn legal-status Critical Current

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    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D51/00—Driving, starting, or stopping arrangements; Automatic stop motions
    • D03D51/18—Automatic stop motions
    • D03D51/44—Automatic stop motions acting on defective operation of loom mechanisms
    • 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

Definitions

  • the invention relates to a monitoring device for weaving machines with flexible Pressure hoses in a weft insertion system, the pressure hoses depending on Arrangement of the solenoid valves either on the one hand at least one pressure source and one or connect several electrically controllable solenoid valves with each other and / or on the other hand the pressure hoses the valves and the means causing the weft insertion connect with each other.
  • the means causing the weft thread insertion are too a structural unit summarized so-called main nozzles for the insertion of the weft into a shed and the so-called auxiliary blowing or relay nozzles that the Weft insertion of the main nozzles across the weaving width using a pneumatic fluid support.
  • the pressure hoses are subject to a wide variety of stresses during the weaving process, such as bending stresses at the pressure medium connections at the ends and pressure stresses when the pressure in the hoses is built up and released during the weaving operations.
  • the stresses on the pressure hoses mentioned as examples lead to defects in the hoses, starting from tearing off at the connection points to leakage points over the length of the pressure hose.
  • the resulting pneumatic fluid lowers the output of the main and / or auxiliary blowing nozzles.
  • Such a reduction in performance is currently not captured by technical means.
  • the drop in performance in the weft insertion system inevitably leads to disturbances in the weft insertion, which are not perceived by the operator of the weaving machine immediately after it arises. Rather, there is a risk that the drop in performance in weft insertion will persist for some time. During this time, incorrect weft thread entries can occur, which occur as permanent fabric defects in the finished goods.
  • the object of the invention is to permanently monitor the pressure hoses Functionality, especially in the weft insertion system of a weaving machine with fluidic weft insertion included pressure hoses to ensure a display any malfunction and trigger a web stop initiate.
  • the electrical conductor forms a closed conductor loop within the wall of the pressure hose. Together with a voice coil, the closed conductor loop forms an oscillating circuit with a predetermined frequency, which is measured by means of known means. A detected change in the frequency during the weaving operation will interpret the known means as a significant feature with regard to the functionality of the pressure hose in question in the weft insertion system of the weaving machine and will trigger a corresponding electrical signal. This signal can be used to manually interrupt the weaving process or it can be used to automatically interrupt the weaving process.
  • FIG. 1 shows a weft insertion system 1 of an air jet weaving machine, consisting of at least one pneumatic pressure source 2, with which the electrically controllable solenoid valves (3) are connected to the pressure source 2 via pressure lines 2a, consisting of means for inserting a weft thread 6 into a shed 7 , which consist of a main nozzle 4 and a plurality of relay nozzles 5, flexible pressure hoses 8 establishing the fluidic connection between a first solenoid valve 3 and the main nozzle 4, between further solenoid valves 3 and the relay nozzles 5 and between a solenoid valve and a stretching nozzle 12.
  • the solenoid valves 3 have valve outputs 11; the main nozzle 4 and the relay nozzles 5 have hose connections 10.
  • first Signal lines 3a connected to an electronic weaving machine control 9.
  • Parallel second signal lines 3b running to the first signal lines 3a are isolated from each other on the one hand at the valve outputs 11 of the solenoid valve 3 and on the other hand the weaving machine control 9.
  • the conductors 8a, 8a ' in contrast to FIG. 6, form a closed conductor loop 14, ie the conductors 8a and 8a' are connected to one another in the end regions of the pressure tubes 8 by means of the loop 14.
  • a voice coil 15 arranged at the outputs 11 of the solenoid valves 3 is penetrated by the end region of the pressure hose and, together with the closed conductor loop 14, forms an oscillating circuit with a predetermined frequency.
  • the power consumption of the resonant circuit is monitored using suitable means. A change in the power consumption is interpreted by the measuring means as a significant change in the functionality of the pressure hose in question. The interpretation is represented by a corresponding signal via the weaving machine control 9 in order to indicate to the operator of the weaving machine the suitability of interrupting the weaving process. The signal shown or generated can also be used to automatically interrupt the weaving process.
  • the necessary circuitry precautions are known.

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

Abstract

Um auf Webmaschinen mit fluidischem Schussfadeneintrag das Herstellen fehlerhaften Gewebes zu vermeiden, besteht das Erforderniss, die Funktionstüchtigkeit der in dem Eintragssystem verwendeten Bauteile permanent zu überwachen. Solche Bauteile sind z.B. die von den Magnetventilen (3) zu den Schussfadeneintragsdüsen (4,5) führenden Druckschläuche (8). Die erfindungsgemäße Lösung offenbart, wie und wodurch die Überwachung der Druckschläuche (8) erfolgt. <IMAGE>In order to avoid the production of defective fabric on weaving machines with fluidic weft insertion, there is a requirement to permanently monitor the functionality of the components used in the insertion system. Such components are e.g. the pressure hoses (8) leading from the solenoid valves (3) to the weft insertion nozzles (4,5). The solution according to the invention discloses how and by which the pressure hoses (8) are monitored. <IMAGE>

Description

Die Erfindung betrifft eine Überwachungseinrichtung für Webmaschinen mit flexiblen Druckschläuchen in einem Schussfadeneintragssystem, wobei die Druckschläuche je nach Anordnung der Magnetventile entweder einerseits wenigstens eine Druckquelle und ein oder mehrere elektrisch ansteuerbare Magnetventile miteinander verbinden und/oder andererseits die Druckschläuche die Ventile und die dem Schussfadeneintrag bewirkenden Mittel miteinander verbinden.The invention relates to a monitoring device for weaving machines with flexible Pressure hoses in a weft insertion system, the pressure hoses depending on Arrangement of the solenoid valves either on the one hand at least one pressure source and one or connect several electrically controllable solenoid valves with each other and / or on the other hand the pressure hoses the valves and the means causing the weft insertion connect with each other.

Den Schussfadeneintrag bewirkende Mittel sind im Falle einer Luftdüsenwebmaschine die zu einer Baueinheit zusammengefassten sogenannten Hauptdüsen zum Eintrag des Schussfadens in ein Webfach und die sogenannten Hilfblas- oder Stafettendüsen, die den Schussfadeneintrag der Hauptdüsen über die Webbreite mittels eines pneumatischen Fluids unterstützen.In the case of an air jet weaving machine, the means causing the weft thread insertion are too a structural unit summarized so-called main nozzles for the insertion of the weft into a shed and the so-called auxiliary blowing or relay nozzles that the Weft insertion of the main nozzles across the weaving width using a pneumatic fluid support.

In Luftdüsenwebmaschinen unterliegen die Druckschläuche während des Webprozesses den unterschiedlichsten Beanspruchungen, wie z.B. Biegebeanspruchungen an den endseitigen Druckmittelanschlüssen und Druckbeanspruchungen beim Auf- und Abbau des Druckes in den Schläuchen während der Weboperationen.
Die beispielhaft erwähnten Beanspruchungen der Druckschläuche führen zu Defekten an den Schläuchen, beginnend vom Abreissen an den Anschlussstellen bis hin zu Leckagestellen über die Länge des Druckschlauches. Das dabei austretende pneumatische Fluid bewirkt eine Absenkung der Leistung von Haupt- und/oder der Hilfsblasdüsen.
Eine solche Absenkung der Leistung wird bis gegenwärtig nicht durch technische Mittel erfasst. Der Leistungsabfall im Schussfadeneintragssystem führt zwangsläufig zu Störungen beim Schussfadeneintrag, die vom Bediener der Webmaschine jedoch nicht unmittelbar nach deren Entstehen wahrgenommen werden.
Vielmehr besteht die Gefahr, dass der Leistungsabfall beim Schussfadeneintrag für geraume Zeit bestehen bleibt.
Während dieser Zeit können fehlerhafte Schussfadeneinträge erfolgen, die als bleibende Gewebefehler in der fertigen Ware auftreten. In air jet looms, the pressure hoses are subject to a wide variety of stresses during the weaving process, such as bending stresses at the pressure medium connections at the ends and pressure stresses when the pressure in the hoses is built up and released during the weaving operations.
The stresses on the pressure hoses mentioned as examples lead to defects in the hoses, starting from tearing off at the connection points to leakage points over the length of the pressure hose. The resulting pneumatic fluid lowers the output of the main and / or auxiliary blowing nozzles.
Such a reduction in performance is currently not captured by technical means. The drop in performance in the weft insertion system inevitably leads to disturbances in the weft insertion, which are not perceived by the operator of the weaving machine immediately after it arises.
Rather, there is a risk that the drop in performance in weft insertion will persist for some time.
During this time, incorrect weft thread entries can occur, which occur as permanent fabric defects in the finished goods.

Der auf eine defekte Druckschlauchleitung im Schussfadeneintragssystem der Webmaschine zurückzuführende Leistungsabfall kann also zu einer erheblichen Menge Ausschussware führen, bis schließlich das Bedienpersonal die Fehlerhaftigkeit der Ware erkannt und die Webmaschine abgestellt hat.The on a defective pressure hose line in the weft insertion system of the weaving machine The drop in performance to be attributed can therefore lead to a considerable amount of rejects until the operating personnel finally recognize the defectiveness of the goods and the Has switched off the weaving machine.

Aufgabe der Erfindung ist es, eine permanente Überwachung der Druckschläuche auf Funktionstüchtigkeit, insbesondere der in das Schussfadeneintragssystem einer Webmaschine mit fluidischem Schussfadeneintrag einbezogenen Druckschläuche, zu gewährleisten, eine aufgetretene Funktionsuntüchtigkeit anzuzeigen und das Auslösen eines Webstops einzuleiten.The object of the invention is to permanently monitor the pressure hoses Functionality, especially in the weft insertion system of a weaving machine with fluidic weft insertion included pressure hoses to ensure a display any malfunction and trigger a web stop initiate.

Die Aufgabe wird erfindungsgemäß durch die Merkmale des Patentanspruchs 1 gelöst.The object is achieved by the features of claim 1.

In einer bevorzugten Ausführungsform der Patentansprüche 4 und 7 bildet der elektrische Leiter eine geschlossene Leiterschleife innerhalb der Wandung des Druckschlauches.
Zusammen mit einer Schwingspule bildet die geschlossene Leiterschleife einen Schwingkreis mit vorbestimmter Frequenz aus, die durch an sich bekannte Mittel messtechnisch erfasst wird.
Eine festgestellte Änderung der Frequenz während des Webbetriebes wird das bekannte Mittel als ein signifikantes Merkmal im Hinblick auf die Funktionstüchtigkeit des betreffenden Druckschlauches im Schussfadeneintragssystem der Webmaschine interpretieren und ein entsprechendes elektrisches Signal auslösen. Dieses Signal kann zum manuellen Unterbrechen des Webprozesses verwendet werden oder es wird zum automatischen Unterbrechen des Webprozesses verwendet.In a preferred embodiment of claims 4 and 7, the electrical conductor forms a closed conductor loop within the wall of the pressure hose.
Together with a voice coil, the closed conductor loop forms an oscillating circuit with a predetermined frequency, which is measured by means of known means.
A detected change in the frequency during the weaving operation will interpret the known means as a significant feature with regard to the functionality of the pressure hose in question in the weft insertion system of the weaving machine and will trigger a corresponding electrical signal. This signal can be used to manually interrupt the weaving process or it can be used to automatically interrupt the weaving process.

Mit der erfindungsgemäßen Lösung wird in vorteilhafter Weise erreicht, dass zu einem möglichst frühen Zeitpunkt eine sich abzeichnende oder eine eingetretene Funktionsstörung in einem der Druckschläuche zum Unterbrechen des Webprozesses führt. Damit wird die Herstellung großer Mengen fehlerhaften Gewebes vermieden.With the solution according to the invention it is advantageously achieved that one as early as possible a looming or a malfunction that has occurred leads to an interruption of the weaving process in one of the pressure hoses. With that the Avoid producing large amounts of defective tissue.

Die Erfindung soll nachstehend anhand eines Ausführungsbeispiels näher erläutert werden. The invention will be explained in more detail below using an exemplary embodiment.

In der Zeichnung zeigt:

Figur 1
das Schussfadeneintragssystem einer Fluidwebmaschine mit den erfindungsgemäß ausgebildeten Druckschläuchen;
Figur 2
ein erfindungsgemäß ausgebildeter Druckschlauch der Überwachungseinrichtung
Figur 3 und 4
der Druckschlauch mit einem ersten und einem zweiten elektrischen Leiter beispielhaft ausgebildeter Querschnitte nach Ansicht "A" in Figur 2;
Figur 5
einen Druckschlauch mit einer integrierten offenen Leiterschleife;
Figur 6
eine Schnittdarstellung des Druckschlauches mit Leiterschleife gemäß der Linie I-I in Figur 5;
Figur 7
einen Druckschlauch mit einer geschlossenen Leiterschleife.
The drawing shows:
Figure 1
the weft insertion system of a fluid weaving machine with the pressure hoses designed according to the invention;
Figure 2
an inventive pressure hose of the monitoring device
Figures 3 and 4
the pressure hose with a first and a second electrical conductor of exemplary cross-sections according to view "A" in Figure 2;
Figure 5
a pressure hose with an integrated open conductor loop;
Figure 6
a sectional view of the pressure hose with conductor loop along the line II in Figure 5;
Figure 7
a pressure hose with a closed conductor loop.

In Figur 1 ist ein Schussfadeneintragssystem 1 einer Luftdüsenwebmaschine dargestellt, bestehend aus wenigstens einer pneumatischen Druckquelle 2, mit der über Druckleitungen 2a die elektrisch ansteuerbaren Magnetventile (3) mit der Druckquelle 2 verbunden sind, bestehend aus Mitteln zum Eintragen eines Schussfadens 6 in ein Webfach 7, die aus einer Hauptdüse 4 und einer Vielzahl von Stafettendüsen 5 bestehen, wobei flexible Druckschläuche 8 die fluidische Verbindung zwischen einem ersten Magnetventil 3 und der Hauptdüse 4, zwischen weiteren Magnetventilen 3 und den Stafettendüsen 5 und zwischen einem Magnetventil und einer Streckdüse 12 herstellen.
Die Magnetventile 3 besitzen Ventilausgänge 11; die Hauptdüse 4 und die Stafettendüsen 5 besitzen Schlauchanschlüsse 10.FIG. 1 shows a weft insertion system 1 of an air jet weaving machine, consisting of at least one pneumatic pressure source 2, with which the electrically controllable solenoid valves (3) are connected to the pressure source 2 via pressure lines 2a, consisting of means for inserting a weft thread 6 into a shed 7 , which consist of a main nozzle 4 and a plurality of relay nozzles 5, flexible pressure hoses 8 establishing the fluidic connection between a first solenoid valve 3 and the main nozzle 4, between further solenoid valves 3 and the relay nozzles 5 and between a solenoid valve and a stretching nozzle 12.
The solenoid valves 3 have valve outputs 11; the main nozzle 4 and the relay nozzles 5 have hose connections 10.

Zum Zwecke der elektrischen Ansteuerung der Magnetventile 3 sind diese über erste Signalleitungen 3a mit einer elektronischen Webmaschinensteuerung 9 verbunden. Parallel zu den ersten Signalleitungen 3a verlaufende zweite Signalleitungen 3b liegen isoliert voneinander einerseits an den Ventilausgängen 11 der Magnetventil 3 an und andererseits an der Webmaschinensteuerung 9 an.For the purpose of electrically actuating the solenoid valves 3, these are via the first Signal lines 3a connected to an electronic weaving machine control 9. Parallel second signal lines 3b running to the first signal lines 3a are isolated from each other on the one hand at the valve outputs 11 of the solenoid valve 3 and on the other hand the weaving machine control 9.

Um im Sinne der der Erfindung zugrunde liegenden technischen Aufgabe eine Überwachung der Funktionstüchtigkeit der Druckschläuche 8 zu ermöglichen, ist vorgesehen, dass in der Wandung 8' der Druckschläuche 8 elektrische Leiter 8a, 8a' integriert sind, die bei einem Defekt der Druckleitung 8 selbst funktionsuntüchtig werden und dadurch der Stromfluss in den Leitern 8a, 8a' und folglich zu der Webmaschinensteuerung 9 unterbrochen ist. Die Unterbrechung des Stromflusses löst in der Webmaschinensteuerung 9 ein elektrisches Signal aus, das zum Stoppen des Webprozesses verwendet werden kann.In order to carry out monitoring in the sense of the technical problem on which the invention is based the functionality of the pressure hoses 8, it is provided that in the Wall 8 'of the pressure hoses 8 electrical conductors 8a, 8a' are integrated, which at one Defect of the pressure line 8 itself become inoperative and thereby the current flow in the conductors 8a, 8a 'and consequently to the weaving machine control 9 is interrupted. The interruption of the current flow triggers an electrical one in the weaving machine control 9 Signal that can be used to stop the weaving process.

Die Ausbildung der stromführenden Leiter, deren Integration in den Druckschlauch 8, die Art und Weise der Stromführung und Kontaktierung mit dem Anschluss der Magnetventile 3 oder dem Anschluss 10 der Hauptdüse 4 und dem Anschluss 10 der Stafettendüsen 5 kann dabei auf die unterschiedlichste Weise erfolgen, wie die Figuren 2 bis 6 zeigen.The formation of the current-carrying conductors, their integration into the pressure hose 8, the art and way of current supply and contact with the connection of the solenoid valves 3 or the connection 10 of the main nozzle 4 and the connection 10 of the relay nozzles 5 take place in the most varied of ways, as shown in FIGS. 2 to 6.

In Figur 7 bilden die Leiter 8a, 8a', im Gegensatz zu Figur 6, eine geschlossene Leiterschleife 14, d.h. die Leiter 8a und 8a' sind in den Endbereichen der Druckschläuche 8 mittels der Schleife 14 untereinander verbunden.
Eine an den Ausgängen 11 der Magnetventile 3 angeordnete Schwingspule 15 ist von dem Endbereich des Druckschlauches durchgriffen und bildet zusammen mit der geschlossenen Leiterschleife 14 einen Schwingkreis mit vorgegebener Frequenz.
Die Leistungsaufnahme des Schwingkreises wird mit geeigneten Mitteln messtechnisch überwacht. Eine Änderung in der Leistungsaufnahme wird von den messtechnischen Mitteln als eine signifikante Änderung in der Funktionstüchtigkeit des betreffenden Druckschlauches interpretiert.
Die Interpretation wird durch ein entsprechendes Signal über die Webmaschinensteuerung 9 dargestellt, um den Bediener der Webmaschine die Zweckmäßigkeit der Unterbrechung des Webprozesses anzuzeigen.
Das dargestellte oder erzeugte Signal kann auch dazu verwendet werden, den Webprozess automatisch unterbrechen zu lassen. Die dazu notwendigen schaltungstechnischen Vorkehrungen sind bekannt. In FIG. 7, the conductors 8a, 8a ', in contrast to FIG. 6, form a closed conductor loop 14, ie the conductors 8a and 8a' are connected to one another in the end regions of the pressure tubes 8 by means of the loop 14.
A voice coil 15 arranged at the outputs 11 of the solenoid valves 3 is penetrated by the end region of the pressure hose and, together with the closed conductor loop 14, forms an oscillating circuit with a predetermined frequency.
The power consumption of the resonant circuit is monitored using suitable means. A change in the power consumption is interpreted by the measuring means as a significant change in the functionality of the pressure hose in question.
The interpretation is represented by a corresponding signal via the weaving machine control 9 in order to indicate to the operator of the weaving machine the suitability of interrupting the weaving process.
The signal shown or generated can also be used to automatically interrupt the weaving process. The necessary circuitry precautions are known.

ZEICHNUNGS-LEGENDEDRAWING LEGEND

0101
SchussfadeneintragssystemWeft insertion system
0202
DruckquellePressure source
02a02a
DruckleitungPressure line
0303
Magnetventilmagnetic valve
03a03a
SignalleitungSignal line
03b03b
SignalleitungSignal line
0404
HauptdüseMain nozzle
0505
StafettendüseRelay nozzle
0606
SchussfadenWeft
0707
WebfachShed
0808
Druckschlauchpressure hose
08'08 '
WandungWall
08a08a
Leiterladder
08a'08a '
Leiterladder
0909
elektr. Webmaschinensteuerungelectr. Weaving machine control
1010th
AnschlussstelleJunction
1111
SchlauchanschlussHose connection
1212th
StreckdüseStretching nozzle
1313
Leiterschleife offenConductor loop open
1414
Leiterschleife geschlossenConductor loop closed
1515
SchwingspuleVoice coil

Claims (10)

Überwachungseinrichtung an einer Webmaschine mit fluidischem Schussfadeneintrag mit einer pneumatischen oder hydraulischen Druckquelle, elektrisch betätigbaren Magnetventilen, Mitteln zum Eintragen eines Schussfadens in ein Webfach, Mittel zum Strecken des eingetragenen Schussfadens und flexiblen Druckschläuchen innerhalb des Schussfadeneintragssystems,
dadurch gekennzeichnet, dass die Druckschläuche (8) mit elektrischen Strom führenden Leitern (8a,8a') ausgerüstet sind, die bei einem auftretenden Defekt des Druckschlauches (8) die Stromführung unterbrechen und in der Webmaschinensteuerung (9) ein Signal erzeugen, durch das ein Webstop auslösbar ist. Monitoring device on a weaving machine with fluidic weft insertion a pneumatic or hydraulic pressure source, electrically operated solenoid valves, Means for inserting a weft thread into a shed, Means for stretching the inserted weft thread and flexible pressure hoses within the weft insertion system,
characterized in that the pressure hoses (8) are equipped with electrical current-carrying conductors (8a, 8a ') which interrupt the current flow in the event of a defect in the pressure hose (8) and generate a signal in the weaving machine control system (9) by which a Webstop can be triggered. Einrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Leiter (8a,8a') jedes Druckschlauches (8) innerhalb des Eintragssystems (1) an Anschlussstellen (10) des Schussfadeneintragsystems zu einer stromführenden Leiterschleife verbunden sind.Device according to claim 1, characterized in that the conductors (8a, 8a ') of each pressure hose (8) within the insertion system (1) are connected to connection points (10) of the weft insertion system to form a current-carrying conductor loop. Einrichtung nach Anspruch 2, dadurch gekennzeichnet, dass die Leiter (8a,8a') in einem Ende jedes Druckschlauches (8) zu einer offenen Leiterschleife (13) verbunden sind.Device according to claim 2, characterized in that the conductors (8a, 8a ') are connected in one end of each pressure hose (8) to form an open conductor loop (13). Einrichtung nach Anspruch 2, dadurch gekennzeichnet, dass die Leiter (8a,8a') in den Enden jedes Druckschlauches (8) zu einer geschlossenen Leiterschleife (14) verbunden sind.Device according to claim 2, characterized in that the conductors (8a, 8a ') are connected in the ends of each pressure hose (8) to form a closed conductor loop (14). Einrichtung nach Anspruch 3, dadurch gekennzeichnet, dass ein erster Leiter (8a) der Stromzuführung dient und ein zweiter Leiter (8a') mit dem Signaleingang der Webmaschinensteuerung (9) in Verbindung steht. Device according to claim 3, characterized in that a first conductor (8a) is used for the power supply and a second conductor (8a ') is connected to the signal input of the weaving machine control (9). Einrichtung nach Anspruch 1, dadurch gekennzeichnet, dass der Schlauchanschluss (10) der Schussfadeneintragsmittel die stromführende Verbindung zwischen den Leitern (8a,8a') herstellt.Device according to claim 1, characterized in that the hose connection (10) of the weft insertion means establishes the current-carrying connection between the conductors (8a, 8a '). Einrichtung nach Anspruch 1, dadurch gekennzeichnet, dass der Schlauchanschluss (11) der Magnetventile (3) die stromführende Verbindung zwischen den Leitern (8a,8a') herstellt.Device according to claim 1, characterized in that the hose connection (11) of the solenoid valves (3) establishes the current-carrying connection between the conductors (8a, 8a '). Einrichtung nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass einer der stromführenden Leiter (8a,8a') der Druckschläuche (8) zu einem der die elektrische Ansteuerung der Magnetventile (3) bewirkenden elektrischen Leiter in Reihe geschaltet ist.Device according to one of claims 1 to 7, characterized in that one of the current-carrying conductors (8a, 8a ') of the pressure hoses (8) is connected in series to one of the electrical conductors effecting the electrical actuation of the solenoid valves (3). Einrichtung nach Anspruch 4, dadurch gekennzeichnet, dass die geschlossene Leiterschleife (14) zusammen mit einer Schwingspule (15) einen Schwingkreis ausbildet.Device according to claim 4, characterized in that the closed conductor loop (14) forms a resonant circuit together with a voice coil (15). Einrichtung nach Anspruch 9, dadurch gekennzeichnet, dass die Frequenz des Schwingkreises messtechnisch erfasst und eine Frequenzänderung in der Webmaschinensteuerung (9) als Signal angezeigt wird.Device according to claim 9, characterized in that the frequency of the resonant circuit is measured and a frequency change is displayed in the weaving machine control (9) as a signal.
EP00112138A 1999-07-30 2000-06-06 Monitoring device for looms with flexible pressure hoses Withdrawn EP1072706A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19936071A DE19936071C1 (en) 1999-07-30 1999-07-30 Jet loom pressure hoses have fitted electrical conductors where the current flow is interrupted on a hose failure and the loom control immediately transmits a loom stop signal
DE19936071 1999-07-30

Publications (2)

Publication Number Publication Date
EP1072706A2 true EP1072706A2 (en) 2001-01-31
EP1072706A3 EP1072706A3 (en) 2003-08-27

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EP00112138A Withdrawn EP1072706A3 (en) 1999-07-30 2000-06-06 Monitoring device for looms with flexible pressure hoses

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US (1) US6186191B1 (en)
EP (1) EP1072706A3 (en)
JP (1) JP2001064851A (en)
DE (1) DE19936071C1 (en)

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WO1995031665A1 (en) * 1994-05-12 1995-11-23 Btr Plc Hose with wear indicator
DE19723001A1 (en) * 1997-06-02 1998-12-03 Alexander Jeschke Method to detect kink, depression or air hole in hose carrying medium

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US6186191B1 (en) 2001-02-13
DE19936071C1 (en) 2000-09-07
JP2001064851A (en) 2001-03-13
EP1072706A3 (en) 2003-08-27

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