EP0760405B1 - Shed forming device for looms - Google Patents

Shed forming device for looms Download PDF

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Publication number
EP0760405B1
EP0760405B1 EP96113643A EP96113643A EP0760405B1 EP 0760405 B1 EP0760405 B1 EP 0760405B1 EP 96113643 A EP96113643 A EP 96113643A EP 96113643 A EP96113643 A EP 96113643A EP 0760405 B1 EP0760405 B1 EP 0760405B1
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EP
European Patent Office
Prior art keywords
piston
shed
heald
way
compressed air
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EP96113643A
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German (de)
French (fr)
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EP0760405A1 (en
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Mark Feer
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Agm AG Mueller
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Agm AG Mueller
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    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C3/00—Jacquards
    • D03C3/24—Features common to jacquards of different types
    • D03C3/44—Lingoes
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C3/00—Jacquards
    • D03C3/22—Fluid-operated jacquards

Definitions

  • the present invention relates to a shedding device for weaving machines, whose warp threads run in strands between an upper compartment position and one Sub-position can be moved back and forth, with electronic sample reading, the piston or a pair of pistons of each strand under the action of a signal pressure of the pressure medium alternately in the direction of the upper compartment position and sub-position of the strand in question, each strand formed as a piston rod emerging from the piston-cylinder system or each strand is connected to the piston via piston rod-like means, and having its free end in guide holes in one of the system block (10) spaced strand or piston rod guide block.
  • US-A-3 853 150, EP-A-0 536 899 and the DE-A-28 32 515 which already show a shedding device in the each strand attacks a pneumatic or hydraulic piston-cylinder system
  • US-A-5 390 709 shows a shedding device of the aforementioned Art.
  • the object of the present invention is therefore to simplify the design Building as well as creating a way to clean the Arrangement within the company, so downtimes due to malfunctions practically eliminated.
  • the cylinders are in one block encapsulated cylinder tubes or parallel bores in a ceramic block or the like; that the guide holes have a common feed line and valve means in fluid communication with a source of the pressure medium stand to periodically enable compressed air cleaning of the strand guide; and further that with the compressed air source via supply line and valve means the cylinders on the top of the pistons are in fluid communication to generate a restoring force.
  • the piston-cylinder system includes effective pistons at the free end of each strand, which are each movable back and forth in a cylinder, the pistons each sit firmly on the free end of the strand or with the latter over a piston rod are interconnected.
  • the cylinders can be connected via feed lines be connected to a pressure medium source, preferably for compressed air, which Compressed air acts on the pistons to generate a restoring force on them to bring the strands in question into the sub-compartment position.
  • the cylinders can each have control lines on the underside and via a multi-valve control or the like with the compressed air source in Flow connections are available to select the pistons and thus the strands with the warp threads in the upper compartment position.
  • the pattern control can be done via a control unit with a central computer system, which the valve means and the multi-valve control according to the entered sample data controls, the sample data created on a computer system and transferred to the control unit using diskettes.
  • the shedding device for weaving machines according to FIG. 1 is a so-called Open compartment jacquard machine, in which two sinkers 1, 2 over one common roller train 3 are connected at the lower end, the boards depending on the control here via the magnetic means 4 with two constantly counter-rotating Moving lifting knives 5.6 can be coupled, so that the attached to the roller train 3 Strand 7 and thus the relevant warp thread 8 a controlled lifting movement between an upper compartment position (left side Fig. 1) and a lower compartment position (right side) is issued.
  • Essential to the invention is now the known mechanical retraction device, consisting of one that matches the number of strands of the weaving machine Large number of tension springs to be replaced by a piston-cylinder system 10.
  • This piston-cylinder system 10 comprises effective at the free end of each strand Pistons 11, which are each movable back and forth in a cylinder 12.
  • the pistons 11 can sit firmly on the free end of the strand or with the latter be interconnected via a piston rod.
  • the cylinders 12 can in one block cast cylinder tubes with an inner diameter for example from 2.8 to 3.5 mm or parallel holes in a ceramic block his. The selection of material and construction is not subject to any restrictions.
  • the cylinders 12 are shown on the top side via feed lines 13 to one Unspecified pressure medium source, preferably connected for compressed air, which compressed air, for example with a pressure of up to 4 bar Piston 11 acts on this to a restoring force of, for example, up to to produce 250 gr to secure the strands in question in the sub-compartment position bring to.
  • the lifting force to overcome the pressure from the compressed air Piston 11 exerted retraction force is then about 280 to 560 gr and will easily applied by the board control.
  • leak sensors (not shown) be provided for monitoring and pressure adjustment or the supplied The pressure medium can always be at the same pressure level.
  • Such a previously described retraction device on a shedding device allows any working frequency of the machine, is practically trouble-free and wear-free and quiet and can easily be used on all types of Retrofit specialist training facilities.
  • the strands can also have additional piston rod-like Means be connected to the piston.
  • the guide bores 14 are via a common feed line 14 'and Valve means 15 with a source 16 for the pressure medium, usually compressed air, in flow connection to periodically perform compressed air cleaning of the strand guide to enable.
  • a source 16 for the pressure medium usually compressed air
  • the cylinders 12 are located on the underside of each of the control lines 18 and a multi-valve control 19 or fluid control or one Flow controller or the like in flow communication with the compressed air source 16 selected the piston 11 and thus the strands 7 with the warp threads 8 with, for example Press 4 to 8 bar pressure into the upper compartment position.
  • a negative pressure could alternately also occur via the control lines 18 are generated to generate the restoring force.
  • the pattern is controlled by a control unit 20 with a central computer system, which the valve means 15, 17 and the multi-valve control 19 via corresponding Signal lines 21 according to the entered sample data controls.
  • control in the above sense can of course also via the control line 13 in the opposite sense. It is also quite possible and in the context of the invention, the control via a double-piston system to effect alternately.
  • the sample data can be created, for example, on a computer system 22 and transferred to the control device 20 by means of diskettes 23.
  • the complete pattern can also be part of a Networking of several machines from a central computer to the control are transmitted, whereupon the control unit 20 of each machine Sample data from the main memory processed.

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

Description

Die vorliegende Erfindung betrifft eine Fachbildeeinrichtung für Webmaschinen, deren in Litzen geführte Kettfäden zwischen einer Oberfachstellung und einer Unterfachstellung hin- und herbewegt werden, mit elektronischer Muster-Einlesung, wobei der Kolben oder ein Kolbenpaar jeder Litze unter der Wirkung eines Stelldruckes des Druckmediums wechselweise in Richtung Oberfachstellung und Unterfachstellung der betreffenden Litze steht, wobei ferner jede Litze als eine aus dem Kolben-Zylinder-System austretende Kolbenstange ausgebildet oder jede Litze über kolbenstangenartige Mittel mit dem Kolben verbunden ist, und wobei deren freies Ende in Führungsbohrungen in einem vom System-Block (10) distanzierten Litzen- oder Kolbenstangen-Führungsblock geführt sind.The present invention relates to a shedding device for weaving machines, whose warp threads run in strands between an upper compartment position and one Sub-position can be moved back and forth, with electronic sample reading, the piston or a pair of pistons of each strand under the action of a signal pressure of the pressure medium alternately in the direction of the upper compartment position and sub-position of the strand in question, each strand formed as a piston rod emerging from the piston-cylinder system or each strand is connected to the piston via piston rod-like means, and having its free end in guide holes in one of the system block (10) spaced strand or piston rod guide block.

Neben der GB-A-1 482 640, der US-A-3 853 150, der EP-A-0 536 899 und der DE-A-28 32 515, welche bereits eine Fachbildeeinrichtung zeigen, bei der an jeder Litze ein pneumatisches oder hydraulisches Kolben-Zylinder-System angreift, zeigt insbesondere die US-A-5 390 709 eine Fachbildeeinrichtung der vorgenannten Art.In addition to GB-A-1 482 640, US-A-3 853 150, EP-A-0 536 899 and the DE-A-28 32 515, which already show a shedding device in the each strand attacks a pneumatic or hydraulic piston-cylinder system, In particular, US-A-5 390 709 shows a shedding device of the aforementioned Art.

Diese bekannten Anordnungen sind aber kompliziert im Aufbau und somit störanfällig, was durch rasche Verschmutzung verstärkt wird, womit grosse Stillstandszeiten entstehen zur Beseitigung der Mängel.However, these known arrangements are complicated in structure and thus susceptible to faults, which is aggravated by rapid contamination, with long downtimes arise to eliminate the defects.

Aufgabe der vorliegenden Erfindung ist deshalb eine Vereinfachung des konstruktiven Aufbaues sowie die Schaffung einer Möglichkeit zur Reinigung der Anordnung innerhalb des Betriebes, sodass Stillstandszeiten wegen Störungen praktisch entfallen.The object of the present invention is therefore to simplify the design Building as well as creating a way to clean the Arrangement within the company, so downtimes due to malfunctions practically eliminated.

Dies wird erfindungegemäss dadurch erreicht, dass die Zylinder in einem Block vergossene Zylinderröhrchen oder parallele Bohrungen in einem Keramik-Block oder dergleichen sind; dass die Führungsbohrungen über eine gemeinsame Zuleitung und Ventilmittel mit einer Quelle für das Druckmedium in Strömungsverbindung stehen, um periodisch eine Druckluftreinigung der Litzenführung zu ermöglichen; und ferner, dass mit der Druckluftquelle über Zuleitung und Ventilmittel die Zylinder obenseitig der Kolben in Strömungsverbindung stehen, um eine Rückstellkraft zu erzeugen.This is achieved according to the invention in that the cylinders are in one block encapsulated cylinder tubes or parallel bores in a ceramic block or the like; that the guide holes have a common feed line and valve means in fluid communication with a source of the pressure medium stand to periodically enable compressed air cleaning of the strand guide; and further that with the compressed air source via supply line and valve means the cylinders on the top of the pistons are in fluid communication to generate a restoring force.

Eine solche Anordnung lässt nun jede Arbeitsfrequenz der Maschine zu, ist praktisch störungs- und verschleissfrei und geräuscharm und lässt sich ohne weiteres an allen Arten von Fachbildeeinrichtungen nachrüsten.Such an arrangement now allows any working frequency of the machine, is practical Trouble-free and wear-free and low-noise and can be easily retrofit to all types of specialist training facilities.

Bei einer bevorzugten Ausgestaltung einer solchen Rückzugsvorrichtung kann das Kolben-Zylinder-System am freien Ende jeder Litze wirksame Kolben umfassen, die je in einem Zylinder hinundher bewegbar sind, wobei die Kolben jeweils fest auf dem freien Ende der Litze aufsitzen oder mit letzterem über eine Kolbenstange zwischenverbunden sind. Hierbei können die Zylinder über Zuleitungen an eine Druckmittelquelle, vorzugsweise für Druckluft, angeschlossen sein, welche Druckluft die Kolben beaufschlägt, um an diesen eine Rückstellkraft zu erzeugen, um die betreffenden Litzen in die Unterfachstellung zu bringen.In a preferred embodiment of such a retraction device the piston-cylinder system includes effective pistons at the free end of each strand, which are each movable back and forth in a cylinder, the pistons each sit firmly on the free end of the strand or with the latter over a piston rod are interconnected. The cylinders can be connected via feed lines be connected to a pressure medium source, preferably for compressed air, which Compressed air acts on the pistons to generate a restoring force on them to bring the strands in question into the sub-compartment position.

In einer weiteren Ausgestaltung können die Zylinder untenseitig je über Steuerleitungen und über eine Mehrventil-Steuerung o. dgl. mit der Druckluftquelle in Strömungsverbindung stehen, um ausgewählt die Kolben und damit die Litzen mit den Kettfäden in die Oberfachstellung zu drücken. Die Muster-Steuerung kann dabei über ein Steuergerät mit zentralem Rechensystem erfolgen, welches die Ventilmittel und die Mehrventil-Steuerung gemäss den eingegebenen Musterdaten ansteuert, wobei die Musterdaten auf einem Computersystem erstellt und mittels Disketten auf das Steuergerät übertragen werden.In a further embodiment, the cylinders can each have control lines on the underside and via a multi-valve control or the like with the compressed air source in Flow connections are available to select the pistons and thus the strands with the warp threads in the upper compartment position. The pattern control can be done via a control unit with a central computer system, which the valve means and the multi-valve control according to the entered sample data controls, the sample data created on a computer system and transferred to the control unit using diskettes.

Beispielsweise Ausführungsformen des Erfindungsgegenstandes sind nachfolgend anhand der Zeichnung näher erläutert. Es zeigen:

Fig. 1
eine erste erfindungsgemässe Ausführungsform einer Fachbildeeinrichtung für Webmaschinen, in schematischer, teilweise schaubildartiger ausschnittweisen Darstellung und
Fig. 2
eine weitere erfindungsgemässe Ausführungsform einer Fachbildeeinrichtung für Webmaschinen, in schematischer, teilweise schaubildartiger ausschnittweisen Darstellung.
For example, embodiments of the subject matter of the invention are explained in more detail below with reference to the drawing. Show it:
Fig. 1
a first embodiment of a shedding device for weaving machines according to the invention, in a schematic, partially diagrammatic detail representation and
Fig. 2
a further embodiment of a shedding device for weaving machines according to the invention, in a schematic, partially diagrammatic, cut-out representation.

Die Fachbildeeinrichtung für Webmaschinen gemäss Fig. 1 ist hier eine sogenannte Offenfach-Jacquardmaschine, bei welcher zwei Platinen 1,2 über einen gemeinsamen Rollenzug 3 am unteren Ende verbunden sind, wobei die Platinen je nach Ansteuerung hier über die Magnetmittel 4 mit zwei ständig gegenläufig bewegten Hubmessern 5,6 koppelbar sind, wodurch der am Rollenzug 3 angehängten Litze 7 und somit dem betreffenden Kettfaden 8 eine gesteuerte Hubbewegung zwischen einer Oberfachstellung (linke Seite Fig. 1)und einer Unterfachstellung (rechte Seite) erteilt wird.The shedding device for weaving machines according to FIG. 1 is a so-called Open compartment jacquard machine, in which two sinkers 1, 2 over one common roller train 3 are connected at the lower end, the boards depending on the control here via the magnetic means 4 with two constantly counter-rotating Moving lifting knives 5.6 can be coupled, so that the attached to the roller train 3 Strand 7 and thus the relevant warp thread 8 a controlled lifting movement between an upper compartment position (left side Fig. 1) and a lower compartment position (right side) is issued.

Soweit sind solche Fachbildeeinrichtungen für Webmaschinen allgemein bekannt, wobei hier eine Vielzahl anderer Systeme bestehen, um die Litzen mit den Kettfäden zur Fachbildung hinundher zu bewegen.So far, such specialist training facilities for weaving machines are generally known, a variety of other systems exist here to connect the strands with the To move warp threads back and forth for shedding.

Gemeinsam ist diesen bekannten Fachbildeeinrichtungen, dass für die jeweilige Rückstellung der Litzen in die Unterfachstellung an jeder Litze eine Zugfeder angreift (nicht gezeigt). Common to these well-known specialist training institutions is that for the respective Returning the strands to the sub-compartment position affects a tension spring on each strand (Not shown).

Erfindungswesentlich ist nun, die bekannte mechanische Rückzugsvorrichtung, bestehend aus einer, mit der Anzahl Litzen der Webmaschine übereinstimmenden Vielzahl von Zugfedern, durch ein Kolben-Zylinder-System 10 zu ersetzen.Essential to the invention is now the known mechanical retraction device, consisting of one that matches the number of strands of the weaving machine Large number of tension springs to be replaced by a piston-cylinder system 10.

Dieses Kolben-Zylinder-System 10 umfasst am freien Ende jeder Litze wirksame Kolben 11, die je in einem Zylinder 12 hinundher bewegbar sind. Die Kolben 11 können dabei jeweils fest auf dem freien Ende der Litze aufsitzen oder mit letzterem über eine Kolbenstange zwischenverbunden sein. Die Zylinder 12 können in einem Block vergossene Zylinderröhrchen sein mit einem Innendurchmesser beispielsweise von 2,8 bis 3,5 mm oder parallele Bohrungen in einem Keramik-Block sein. Die Auswahl von Material und Bauweise unterliegt hier keiner Beschränkung.This piston-cylinder system 10 comprises effective at the free end of each strand Pistons 11, which are each movable back and forth in a cylinder 12. The pistons 11 can sit firmly on the free end of the strand or with the latter be interconnected via a piston rod. The cylinders 12 can in one block cast cylinder tubes with an inner diameter for example from 2.8 to 3.5 mm or parallel holes in a ceramic block his. The selection of material and construction is not subject to any restrictions.

Die Zylinder 12 sind in der Darstellung obenseitig über Zuleitungen 13 an eine nicht näher bezeichnete Druckmittelquelle, vorzugsweise für Druckluft angeschlossen, welche Druckluft beispielsweise mit einem Druck von bis 4 Bar die Kolben 11 beaufschlägt, um an diesen eine Rückstellkraft von beispielsweise bis zu 250 gr zu erzeugen, um die betreffenden Litzen sicher in die Unterfachstellung zu bringen. Die Hubkraft zur Überwindung der von der Druckluft auf den Kolben 11 ausgeübten Rückzugskraft beträgt dann etwa 280 bis 560 gr und wird ohne weiteres von der Platinensteuerung aufgebracht. The cylinders 12 are shown on the top side via feed lines 13 to one Unspecified pressure medium source, preferably connected for compressed air, which compressed air, for example with a pressure of up to 4 bar Piston 11 acts on this to a restoring force of, for example, up to to produce 250 gr to secure the strands in question in the sub-compartment position bring to. The lifting force to overcome the pressure from the compressed air Piston 11 exerted retraction force is then about 280 to 560 gr and will easily applied by the board control.

Um hierbei Leckströmungen auszugleichen, können Leckfühler (nicht gezeigt) zur Überwachung und Drucknachregelung vorgesehen sein oder das zugeführte Druckmedium kann dauernd mit gleichem Druckniveau anliegen.To compensate for leakage flows, leak sensors (not shown) be provided for monitoring and pressure adjustment or the supplied The pressure medium can always be at the same pressure level.

Eine solche vorbeschriebene Rückzugsvorrichtung an einer Fachbildeeinrichtung lässt jede Arbeitsfrequenz der Maschine zu, ist praktisch störungs- und verschleissfrei und geräuscharm und lässt sich ohne weiteres an allen Arten von Fachbildeeinrichtungen nachrüsten.Such a previously described retraction device on a shedding device allows any working frequency of the machine, is practically trouble-free and wear-free and quiet and can easily be used on all types of Retrofit specialist training facilities.

Auf der Basis der vorbeschriebenen Rückzugsvorrichtung ist es nun weiter möglich, eine Fachbildeeinrichtung zu schaffen, bei der auch auf die noch bestehenden bewegten Teile, wie die Magnetmittel, die Platinen und die Hubmesser, ferner auf die Rollenzüge, Platinenboden, Harnisch u.a. verzichtet werden kann also eine Fachbildeeinrichtung mit elektronischem Muster-Einlesen zu schaffen, bei welcher die Platinensteuerung zur Gänze entfällt.On the basis of the retraction device described above, it is now possible to to create a specialist training facility that also applies to the existing ones moving parts, such as the magnetic means, the circuit boards and the lifting knife, further on the roller trains, circuit board floor, armor etc. can be dispensed with to create a specialist training facility with electronic pattern reading, in which the board control is completely eliminated.

Dies wird erfindungegemäss dadurch erreicht, dass der Kolben 11 jeder Litze 7 unter der Wirkung eines Stelldruckes des Druckmediums wechselweise in Richtung Oberfachstellung und Unterfachstellung der betreffenden Litze steht, wobei jede Litze 7 als eine aus dem Kolben-Zylinder-System 10 austretende Kolbenstange ausgebildet ist, deren freies Ende 7' in Führungsbohrungen 14 in einem vom System-Block 10 distanzierten Litzen-Führungsblock 15 verdrehungsfest geführt sind. This is achieved according to the invention in that the piston 11 of each strand 7 under the effect of a signal pressure of the pressure medium alternately in the direction Upper compartment position and lower compartment position of the strand in question stands, whereby each strand 7 as a piston rod emerging from the piston-cylinder system 10 is formed, the free end 7 'in guide holes 14 in one from the system block 10 spaced strand guide block 15 twist-proof are led.

Als eine Ausführungsvariante können die Litzen aber auch über zusätzliche kolbenstangenartige Mittel mit den Kolben verbunden sein.As a variant, the strands can also have additional piston rod-like Means be connected to the piston.

Die Führungsbohrungen 14 stehen über eine gemeinsame Zuleitung 14' und Ventilmittel 15 mit einer Quelle 16 für das Druckmedium, in der Regel Druckluft, in Strömungsverbindung, um periodisch eine Druckluftreinigung der Litzenführung zu ermöglichen.The guide bores 14 are via a common feed line 14 'and Valve means 15 with a source 16 for the pressure medium, usually compressed air, in flow connection to periodically perform compressed air cleaning of the strand guide to enable.

Weiter stehen mit der Druckluftquelle 16 über Zuleitung 13 und Ventilmittel 17 die Zylinder 12 obenseitig der Kolben 11 in Strömungsverbindung, um, wie vorstehend beschrieben, eine Rückstellkraft zu erzeugen.There are also the compressed air source 16 via supply line 13 and valve means 17 Cylinder 12 on top of piston 11 in fluid communication, as above described to generate a restoring force.

Ferner stehen die Zylinder 12 in der Darstellung untenseitig je über Steuerleitungen 18 und über eine Mehrventil-Steuerung 19 oder Fluid-Steuerung oder einen Strömungsregler o. dgl. mit der Druckluftquelle 16 in Strömungsverbindung, um ausgewählt die Kolben 11 und damit die Litzen 7 mit den Kettfäden 8 mit beispielsweise 4 bis 8 Bar Druck in die Oberfachstellung zu drücken.Furthermore, the cylinders 12 are located on the underside of each of the control lines 18 and a multi-valve control 19 or fluid control or one Flow controller or the like in flow communication with the compressed air source 16 selected the piston 11 and thus the strands 7 with the warp threads 8 with, for example Press 4 to 8 bar pressure into the upper compartment position.

Gegebenenfalls könnte über die Steuerleitungen 18 auch wechselweise ein Unterdruck erzeugt werden, um die Rückstellkraft zu erzeugen.If necessary, a negative pressure could alternately also occur via the control lines 18 are generated to generate the restoring force.

Die Muster-Steuerung erfolgt über ein Steuergerät 20 mit zentralem Rechensystem, welches die Ventilmittel 15, 17 und die Mehrventil-Steuerung 19 über entsprechende Signal-Leitungen 21 gemäss den eingegebenen Musterdaten an steuert.The pattern is controlled by a control unit 20 with a central computer system, which the valve means 15, 17 and the multi-valve control 19 via corresponding Signal lines 21 according to the entered sample data controls.

Solche Fluid-Steuerungen sind ansich bekannt und geeignet, mit Hochgeschwindigkeit Kolben-Zylinder-Systeme zu betreiben.Such fluid controls are known per se and are suitable at high speed Operate piston-cylinder systems.

Die Ansteuerung in vorstehendem Sinne kann natürlich auch über die Steuerleitung 13 in umgekehrtem Sinne erfolgen. Ferner ist es durchaus auch möglich und im Rahmen der Erfindung, die Ansteuerung über ein Doppelkolbensystem wechselweise zu bewirken.The control in the above sense can of course also via the control line 13 in the opposite sense. It is also quite possible and in the context of the invention, the control via a double-piston system to effect alternately.

Die Musterdaten können beispielsweise auf einem Computersystem 22 erstellt und mittels Disketten 23 auf das Steuergerät 20 übertragen werden.The sample data can be created, for example, on a computer system 22 and transferred to the control device 20 by means of diskettes 23.

Oder es können beispielsweise die kompletten Muster auch im Rahmen einer Vernetzung mehrerer Maschinen von einem zentralen Computer in die Steuerung übertragen werden, worauf dann das Steuergerät 20 jeder Maschin die Musterdaten aus dem Arbeitsspeicher verarbeitet.Or, for example, the complete pattern can also be part of a Networking of several machines from a central computer to the control are transmitted, whereupon the control unit 20 of each machine Sample data from the main memory processed.

Solche Anordnungen zur elektronischen Muster-Einlesung sind ebenfalls ansich bekannt und müssen hier nicht näher erläutert werden.Such arrangements for electronic pattern reading are also per se known and need not be explained here.

Von wesentlicher Bedeutung ist hier, dass die Steuerung der Litzen und somit der Kettfäden direkt über das Kolben-Zylinder-System erfolgt und dabei völlig auf die bisherige Platinensteuerung verzichtet werden kann. Entsprechend ist eine solche Fachbildeeinrichtung für jede Arbeitsfrequenz der Webmaschine geeignet, sowie praktisch störungs- und verschleissfrei.It is essential here that the control of the strands and thus the warp threads take place directly via the piston-cylinder system and are completely open the previous board control can be dispensed with. Accordingly, one is such shedding device suitable for any working frequency of the weaving machine, as well as practically trouble-free and wear-free.

Claims (5)

  1. Shed-forming equipment for looms, the warp threads of which are guided in healds and moved back and forth between an upper shed setting and a lower shed setting, with electronic pattern reading, wherein the piston (11) or a piston pair of each heald (7) stands under the action of a setting pressure of the pressure medium alternately in the direction of the upper shed setting and lower shed setting of the respective heald, wherein further each heald (7) is constructed as a piston rod extending out of the piston-cylinder system (10) or each heald is connected with the piston by way of piston-rod-like means, and wherein the free ends (7') thereof are guided in guide bores (14) in a heald guide block or piston rod guide block (15) spaced from the system block (10), characterised in that the cylinders (12) are cylinder tubelets cast in a block or parallel bores in a ceramic block or the like, that the guide bores (14) are connected in terms of flow with a source (16) for the pressure medium by way of a common feed duct (14') and valve means (15) in order to periodically enable a compressed air cleaning of the heald guide, and further that the cylinders (12) at the top of the pistons (11) are connected in terms of flow with the compressed air source (16) by way of a feed duct (13) and valve means (17) in order to produce a restoring force.
  2. Shed-forming equipment according to claim 1, characterised in that the piston-cylinder system (10) comprises pistons (11) which are effective at the free end of each heald (7) and which are each reciprocatingly movable in a cylinder (12), wherein the pistons (11) are each firmly seated on the free end of the respective heald (7) or intermediately connected with the latter by way of a piston rod.
  3. Shed-forming equipment according to claim 1, characterised in that the cylinders (12) are connected by way of feed ducts (13) with a pressure medium source, preferably for compressed air, which compressed air acts on the pistons (11) so as to produce a restoring force at these in order to bring the respective healds (7) into the lower shed J setting.
  4. Shed-forming equipment according to claim 1, characterised in that the cylinders (12) are connected at the underside in terms of flow with the compressed air source (16) by way of respective control ducts (18) and by way of a multiple valve control (19) or the like in order to selectably urge the pistons (11) and thus the healds (7) together with the warp threads (8) into the upper shed setting.
  5. Shed-forming equipment according to claim 1, characterised in that the pattern control is effected by way of a control apparatus (20) with central computer system, which controls the valve means (15, 17) and the multiple valve control (19) in drive in accordance with the input pattern data, wherein the pattern data are set up on a computer system (22) and transferred to the control apparatus (20) by means of diskettes (23) or by networking.
EP96113643A 1995-08-30 1996-08-26 Shed forming device for looms Expired - Lifetime EP0760405B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH2461/95 1995-08-30
CH246195 1995-08-30
CH02461/95A CH690037A5 (en) 1995-08-30 1995-08-30 Shedding device for looms.

Publications (2)

Publication Number Publication Date
EP0760405A1 EP0760405A1 (en) 1997-03-05
EP0760405B1 true EP0760405B1 (en) 2000-03-29

Family

ID=4234349

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96113643A Expired - Lifetime EP0760405B1 (en) 1995-08-30 1996-08-26 Shed forming device for looms

Country Status (7)

Country Link
US (1) US5762112A (en)
EP (1) EP0760405B1 (en)
JP (1) JPH09111572A (en)
CH (1) CH690037A5 (en)
CZ (1) CZ240696A3 (en)
DE (1) DE59604818D1 (en)
TR (1) TR199600687A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1748051B (en) * 2003-02-07 2010-09-29 格罗兹-贝克特公司 Pre-tensioning device for healds

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO178237C (en) * 1993-11-26 1996-02-14 Vibeke Vestby Device for use in a loom
FR2825723B1 (en) 2001-06-08 2003-08-08 Staubli Lyon GUIDE BODY, JACQUARD HARNESS AND CROWD FORMING DEVICE INCLUDING SUCH A BODY AND GUIDING METHOD FOR THE WIRE OF A JACQUARD CRAFT
KR100851894B1 (en) * 2001-06-08 2008-08-13 스또불리 리옹 Guiding member, jacquard harness and shed-forming device incorporating such a member and method for guiding the harness cords of a jacquard loom
CN101058912B (en) * 2007-05-29 2011-09-14 浙江理工大学 Air-actuated jacquard device

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3853150A (en) * 1972-10-03 1974-12-10 E Romano Fluid-operated device for raising warp yarns in looms
GB1482640A (en) * 1974-10-23 1977-08-10 Autosyst Ltd Warp selection devices
DE2631175B1 (en) * 1976-07-10 1977-12-29 Wolfgang Ebisch RETURN DEVICE FOR THE WEAVING STRANDS OF A JACQUARD WEAVING MACHINE
IT1105933B (en) * 1977-07-26 1985-11-11 Brochier Soieries J APPARATUS FOR COMMANDING THE MOVEMENT OF THE LEADING WIRES IN A WEAVING FRAME
JPH0571036A (en) * 1991-09-10 1993-03-23 Nippon Filcon Co Ltd Device for shed using heald having one supported end and method for weaving and joining using the same device
US5390709A (en) * 1992-12-16 1995-02-21 Martonffy; Barnabas Fabric forming machine including pneumatic shedding apparatus and method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1748051B (en) * 2003-02-07 2010-09-29 格罗兹-贝克特公司 Pre-tensioning device for healds

Also Published As

Publication number Publication date
CH690037A5 (en) 2000-03-31
DE59604818D1 (en) 2000-05-04
CZ240696A3 (en) 1997-03-12
TR199600687A2 (en) 1997-04-22
EP0760405A1 (en) 1997-03-05
JPH09111572A (en) 1997-04-28
US5762112A (en) 1998-06-09

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