EP0297586B1 - Double-lift open-shed Jacquard machine - Google Patents

Double-lift open-shed Jacquard machine Download PDF

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Publication number
EP0297586B1
EP0297586B1 EP88110491A EP88110491A EP0297586B1 EP 0297586 B1 EP0297586 B1 EP 0297586B1 EP 88110491 A EP88110491 A EP 88110491A EP 88110491 A EP88110491 A EP 88110491A EP 0297586 B1 EP0297586 B1 EP 0297586B1
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EP
European Patent Office
Prior art keywords
machine according
jacquard machine
lifting
lifting knives
oscillating
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EP88110491A
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German (de)
French (fr)
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EP0297586A3 (en
EP0297586A2 (en
Inventor
Walter Keim
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Grosse Webereimaschinen GmbH
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Grosse Webereimaschinen GmbH
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Publication of EP0297586A3 publication Critical patent/EP0297586A3/en
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    • DTEXTILES; PAPER
    • D03WEAVING
    • D03CSHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C3/00Jacquards
    • D03C3/24Features common to jacquards of different types
    • D03C3/32Jacquard driving mechanisms
    • D03C3/36Griffe operating mechanisms

Definitions

  • the invention relates to a double-stroke open pocket jacquard machine according to the preamble of claim 1.
  • Jacquard machines of this type are widely known (see e.g. DE-B1-25 33 216).
  • Various types of training have recently been specified for jacquard machines of this type, by means of which the working speed, i.e. the number of subject changes per unit of time can be increased.
  • the specialist positions are changed by moving lifting knives between a low and a high position under pattern-controlled, i.e. optional, take of boards or not.
  • the lifting knives of a lifting knife set are conventionally arranged in a respective knife frame or knife bar, which is moved by a gear between the two specialist positions, as a rule up and down, which results in extremely high loads and thus high wear during the entire specialist stroke.
  • the arrangement of beams, knives and gears must therefore be very stiff and therefore has a high mass. This can lead to vibrations at high working speeds (high speeds of the drive motor).
  • the two knife frames or knife bars must be moved in opposite directions without being allowed to interfere with each other. This creates additional design difficulties.
  • an oscillating shaft is provided, on which the lifting knives of a set are articulated individually, whereby an individual adjustment and a simple individual exchange is possible.
  • the oscillating shaft itself is moved by a gear mechanism which is relatively easy to form and which causes the oscillating movement. It is essential that the parts causing the movement of the lifting knives are no longer arranged in a frame with a high mass, but are articulated on an oscillating shaft that can be supported in the machine frame.
  • jacquard machines of very large dimensions can be created since the oscillating shafts can be supported in a simple manner and the knives can also have a comparatively large length since they are in Direction of their longitudinal extent in the machine frame to avoid twisting or deflection can be performed.
  • the design according to the invention also enables simple maintenance and readjustment, since only a change in the gearbox, preferably only the exchange of an eccentric, is required to change the specialist stroke, and for the fine adjustment only a shift in part of a clamping device carrying the lifting knife is required.
  • the invention is explained on the basis of a double-stroke open-pocket jacquard machine with lifting knives running in the warp thread direction and with inclined pocket formation.
  • the invention is also applicable to those jacquard machines in which the lifting knives run in the weft direction and in which no inclined pocket but a straight pocket is formed, that is to say for each jacquard machine in which two sets of lifting knives are moved between two specialist positions, with reference to the training the intervention between the lifting knife and the circuit boards and whether the circuit boards are actuated in the high or low position is not important.
  • a control arrangement (not shown) is used to determine whether or not a respective circuit board 4 is to be taken from the respective lifting knife 2 or 3 into the other specialist position.
  • Such control arrangements are widely known, it can be mechanical or electromechanical.
  • the boards 4 In the low position, the boards 4 can come to rest on a schematically illustrated board base 5.
  • Each board 4 is connected to a choir cord 8 which is guided over a harness floor 6 and is expediently fixed in a resilient manner (harness pull down). These choir cords 8 are connected to the associated warp thread 7, as is usual.
  • the lifting knives 2 of the first set and the lifting knives 3 of the second set are each arranged approximately parallel to one another and offset from the lifting knives 3, 2 of the other set across the width of the jacquard machine or the machine frame 1.
  • the lifting knives 2, 3 are essentially flat steel parts which are provided with notches, recesses or the like, via which the boards 4 can be taken along by means of corresponding hooks or the like, provided the boards 4 are not made by the control arrangement (not shown) the path of movement of the lifting knives 2, 3 are moved out.
  • Each lifting knife is connected at its ends via a respective lever arrangement to a movement device which is common to all lifting knives of the same set.
  • the right end 9 of the lifting knife 2 in FIG. 1 is connected via a lever arrangement 10 to a clamping device 11 which is fixed to an oscillating shaft 12.
  • the left end 13 in FIG. 1 of the lifting knife 2 is connected via a lever arrangement 14 to a clamping device 15 which is fixed to an oscillating shaft 16.
  • the right end 17 of the lifting knife 3 of the other lifting knife set is connected via a lever arrangement 18 to a clamping device 19 which is fixed to an oscillating shaft 20.
  • the left end 21 of this lifting knife 3 is connected via a lever arrangement 22 to a clamping device 23 which is fixed to an oscillating shaft 24.
  • Each set of lifting knives is thus connected to a pair of oscillating shafts at both ends via a respective set of lever arrangements in such a way that a pivoting movement of the oscillating shafts achieves a corresponding lifting movement of the lifting knives.
  • the respective lifting knife 2, 3 is connected to the lever arrangements 10, 14 and 18, 22 assigned at the end so that each lifting knife is suspended at one end with a lever arrangement and at the other end is fixed upright with the lever arrangement assigned there, ie that the oscillating shafts assigned to a lifting knife 2, 3 or a lifting knife set, namely on the one hand 12 and 16 and on the other hand 20 and 24; are arranged crosswise.
  • the lever arrangement is formed in two parts in the exemplary embodiment, as will be explained with reference to the lever arrangement 10. This consists of a first lever arm 25 connected to the clamping device 11 and a second lever arm 26 which is pivotably attached to the right end 9 of the lifting knife 2 on the one hand and to the free end of the first lever arm 25 on the other hand. If the second lever arms of the two lever arrangements assigned to a lifting knife are dimensioned such that the lifting knives are essentially parallel to one another (e.g.) are arranged horizontally, then a straight shed formation is achieved. However, if the dimensioning is selected as in the exemplary embodiment, inclined subject formation is achieved. As mentioned, each first lever arm of the lever arrangement is fastened in the associated clamping device. If this attachment is adjustable in the direction of extension of the lever arm, then a fine adjustment of the specialist stroke can be achieved. It has been shown that adjustments of approximately 5 mm are possible.
  • the oscillating shafts 12, 20, and also the two other oscillating shafts 16, 24, not shown in FIG. 2 are mounted in the machine frame 1 and only support the clamping devices 11, 19 (or 23, 15 ) and the associated lever arrangements the respective lifting knives. With a corresponding length of the oscillating shafts 12, 20, these can be supported on the machine frame 1 via a support device.
  • a support tube 27 is connected to the machine frame 1, in particular welded, with supports 28 and 29 attached, for example welded, to the circumference of the support tube, which receive the oscillating shafts 12 and 20 via schematically illustrated bearings 30 and 31 .
  • supports 28 and 29 attached, for example welded, to the circumference of the support tube, which receive the oscillating shafts 12 and 20 via schematically illustrated bearings 30 and 31 .
  • Several such supports can be arranged distributed over the length of the oscillating shaft 12, 20 (or 16, 24). This prevents the respective oscillating wave from bending.
  • a respective support 32, 33, 34, 35 is attached to a shaft stub of each oscillating shaft 12, 16, 20, 24 protruding from the machine frame 1.
  • Each carrier is essentially U-shaped and is connected centrally to the respective oscillating shaft.
  • Each carrier carries, as is explained with reference to the carrier 32, a cam roller 36 on one leg, which is in contact with an eccentric 37 which is fastened on a rotating shaft 38.
  • the rotating shaft 38 is connected to the drive motor 39 of the loom, expediently via a gear arrangement, not shown.
  • the eccentric 37 is preferably designed to be interchangeable. Through a suitable choice of the dimensions of the eccentric 37, different shifts in the sense of a rough adjustment are possible and can be redetermined for each individual case by exchanging the eccentric 37.
  • Each oscillating shaft can now be assigned its own eccentric with a rotating shaft coupled to the drive motor 39.
  • the cam roller 40 on the carrier 34 is in contact, in such a way that when the lifting knives of the one lifting knife set have reached the high position via the engagement between the cam roller and the eccentric, the lifting knives of the other lifting knife set then have reached the low position, and vice versa.
  • the formation of the eccentric 37 and the assignment of the cam rollers 36, 40 is such that a complete stroke is carried out with one revolution of the rotating shaft 38, that is to say each lifting knife 2, 3 has reached both specialist positions once.
  • the two cam rollers 36, 40 are arranged offset by 180 ° with respect to the axis of the rotating shaft 38.
  • the respective other legs of the carriers 32, 34 are connected to one another via a tab 41 articulated on these legs, the tab engaging around the rotating shaft 38 via an elongated hole 42. In this way, an inevitable contact of the cam rollers 36, 40 on the eccentric 37 is achieved via a positive connection.
  • the other two oscillating shafts 16, 24 are in an essentially identical manner via cam rollers 43, 44 in a form-fitting manner in contact with an eccentric 45 of a rotating shaft 46, which is also coupled to the drive motor 39, for example via a belt drive or the like Belt drive can achieve the connection to the rotating shaft 38, which in turn is coupled to the drive motor 39.
  • a tab 47 is provided, which brings about the positive engagement.
  • one of the two eccentric gear arrangements can be replaced by a simple mounting in the frame in the case of inclined compartment formation, but with a suitable length of the It must be ensured that the necessary minimum stroke is achieved for all boards. For this reason, the selected arrangement is preferable, as this enables shorter knives to be reached.
  • the training shown ensures reliable synchronization of the movements, in particular the movement of the lifting knives 2 and 3 between their two respective specialist positions.
  • another gear arrangement which effects this synchronization can also be selected.
  • a comparable gear arrangement 50 can also be provided on the other side of the machine frame 1, that of the one shown in FIG. 2 on the left side Gear arrangement essentially corresponds.
  • their expandability and interchangeability are difficult because the connection to the drive motor 39 is effected on this side.
  • the lifting knives 2 and 3 are assigned a guide 48 and 49, respectively, which can be moved in the machine frame 1 indicated in this regard in the same direction as the lifting knives 2, 3.
  • These guides 48, 49 are preferably provided centrally with respect to the points of attack of the plates 4 or the lifting knives 2, 3.
  • These guides 48, 49 on the one hand prevent the knives 2, 3 from buckling or bending out of the plane of the drawing corresponding to FIG. 1, and on the other hand prevent the lifting knives 2, 3 from being displaced in their longitudinal extent and parallel to the plane of the drawing, in order to prevent them from being drawn prevent large bending or pivoting of the boards 4.
  • the design of the jacquard machine according to the invention achieves that only the lifting knives move almost exclusively are, whereby the mass to be moved is reduced to the utmost.
  • the oscillating shaft can still be supported in order to avoid deflection. In this way, the load which is exerted on the driving arrangement is largely reduced, largely using rotating parts which can be easily stored in the machine frame, as a result of which the construction is considerably simplified. Furthermore, the design is simplified and simple adjustment is possible.

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

Description

Die Erfindung betrifft eine Doppelhub-Offenfach-Jacquardmaschine nach dem Oberbegriff des Anspruchs 1.The invention relates to a double-stroke open pocket jacquard machine according to the preamble of claim 1.

Jacquardmaschinen dieser Bauart sind vielfältig bekannt (vgl. z.B. DE-B1-25 33 216). Bei Jacquardmaschinen dieser Art sind in der letzten Zeit verschiedene Ausbildungsformen angegeben worden, mittels denen die Arbeitsgeschwindigkeit, d.h. die Anzahl der Fachstellungswechsel pro Zeiteinheit, erhöht werden kann. Der Wechsel der Fachstellungen erfolgt durch Bewegung von Hubmessern zwischen einer Tieffach- und einer Hochfachstellung unter mustergesteuerter, d.h. wahlweiser, Mitnahme von Platinen oder nicht. Herkömmlich sind die Hubmesser eines Hubmessersatzes in einem jeweiligen Messerrahmen oder Messerbalken angeordnet, der durch ein Getriebe zwischen den beiden Fachstellungen, in aller Regel auf und ab, bewegt wird, wodurch sich außerordentlich hohe Belastung und damit hoher Verschleiß während des gesamten Fachhubes ergibt. Die Anordnung aus Balken, Messer und Getriebe muß also sehr steif sein und besitzt daher hohe Masse. Damit kann es bei hohen Arbeitsgeschwindigkeiten (hohen Drehzahlen des Antriebsmotors) zu Schwingungen kommen. Darüber hinaus müssen die beiden Messerrahmen oder Messerbalken gegenläufig bewegt werden, ohne daß sie sich gegenseitig stören dürfen. Hierdurch ergeben sich zusätzliche konstruktive Schwierigkeiten.Jacquard machines of this type are widely known (see e.g. DE-B1-25 33 216). Various types of training have recently been specified for jacquard machines of this type, by means of which the working speed, i.e. the number of subject changes per unit of time can be increased. The specialist positions are changed by moving lifting knives between a low and a high position under pattern-controlled, i.e. optional, take of boards or not. The lifting knives of a lifting knife set are conventionally arranged in a respective knife frame or knife bar, which is moved by a gear between the two specialist positions, as a rule up and down, which results in extremely high loads and thus high wear during the entire specialist stroke. The arrangement of beams, knives and gears must therefore be very stiff and therefore has a high mass. This can lead to vibrations at high working speeds (high speeds of the drive motor). In addition, the two knife frames or knife bars must be moved in opposite directions without being allowed to interfere with each other. This creates additional design difficulties.

Diese Nachteile sind nicht nur bei Jacquardmaschinen üblicher Bauart, bei denen die Hubmesser in Schußfadenrichtung verlaufen, vorhanden (vgl. z.B. DE-B2-25 07 486), sondern auch bei Jacquardmaschinen, bei denen die Hubmesser in Kettfadenrichtung (vgl. DE-B1-25 33 216) verlaufen. Im letzteren Fall tritt noch der zusätzliche Nachteil auf, daß bei der Schrägfachbildung und Verwendung eines gemeinsamen Getriebes unterschiedliche Angriffspunkte vorliegen, so daß die Belastungen bei hoher Arbeitsgeschwindigkeit durch unterschiedliche Verteilung noch ungünstigere Wirkung entfalten.These disadvantages are not only present in conventional jacquard machines in which the lifting knives run in the weft direction (see, for example, DE-B2-25 07 486), but also in jacquard machines in which the lifting knives are in the warp direction (see. DE-B1- 25 33 216). In the latter case, there is the additional disadvantage that there are different points of attack when forming the inclined compartment and using a common gear, so that the loads at high working speeds have an even more unfavorable effect due to different distribution.

Ausgehend hiervon ist es Aufgabe der Erfindung, eine Doppelhub-Offenfach-Jacquardmaschine der eingangs genannten Art so auszubilden, daß bei günstigerer konstruktiver Gestaltung die notwendige Masse verringert ist.Proceeding from this, it is an object of the invention to design a double-stroke open-pocket jacquard machine of the type mentioned at the outset in such a way that the necessary mass is reduced with a more favorable structural design.

Die Aufgabe wird durch die kennzeichnenden Merkmale des Anspruchs 1 gelöst.The object is achieved by the characterizing features of claim 1.

Die Erfindung wird durch die Merkmale der Unteransprüche weitergebildet.The invention is further developed by the features of the subclaims.

Wesentlich für die vorliegende Erfindung ist, daß eine oszillierende Welle vorgesehen ist, an der die Hubmesser eines Satzes einzeln angelenkt sind, wodurch eine individuelle Justierung sowie ein einfacher einzelner Austausch möglich ist. Die oszillierende Welle selbst wird durch ein die oszillierende Bewegung verursachendes relativ einfach ausbildbares Getriebe bewegt. Von wesentlicher Bedeutung ist, daß die die Bewegung der Hubmesser bewirkenden Teile nicht mehr in einem hohe Masse aufweisenden Rahmen angeordnet sind, sondern an einer im Maschinenrahmen abstützbaren oszillierenden Welle angelenkt sind. Insbesondere wenn beiderseits der Jacquardmaschine, d.h., den beiden Enden der Hubmesser zugeordnet, oszillierende Wellen vorgesehen sind, können Jacquardmaschinen sehr großer Abmessungen geschaffen werden, da die oszillierenden Wellen in einfacher Weise abstützbar sind und auch die Messer vergleichsweise große Länge aufweisen können, da sie in Richtung ihrer Längserstreckung im Maschinenrahmen zur Vermeidung einer Verwindung oder Durchbiegung geführt werden können. Die erfindungsgemäße Ausbildung ermöglicht ferner eine einfache Wartung und auch Neueinstellung, da zur Änderung des Fachhubes lediglich eine Änderung im Getriebe, vorzugsweise lediglich der Austausch eines Exzenters notwendig ist und für die Feinjustierung nur ein Verschieben in einem Teil einer die Hubmesser tragenden Klemmeinrichtung erforderlich ist.It is essential for the present invention that an oscillating shaft is provided, on which the lifting knives of a set are articulated individually, whereby an individual adjustment and a simple individual exchange is possible. The oscillating shaft itself is moved by a gear mechanism which is relatively easy to form and which causes the oscillating movement. It is essential that the parts causing the movement of the lifting knives are no longer arranged in a frame with a high mass, but are articulated on an oscillating shaft that can be supported in the machine frame. In particular if oscillating shafts are provided on both sides of the jacquard machine, that is to say assigned to the two ends of the lifting knives, jacquard machines of very large dimensions can be created since the oscillating shafts can be supported in a simple manner and the knives can also have a comparatively large length since they are in Direction of their longitudinal extent in the machine frame to avoid twisting or deflection can be performed. The design according to the invention also enables simple maintenance and readjustment, since only a change in the gearbox, preferably only the exchange of an eccentric, is required to change the specialist stroke, and for the fine adjustment only a shift in part of a clamping device carrying the lifting knife is required.

Die Erfindung wird anhand des in der Zeichnung dargestellten Ausführungsbeispiels näher erläutert. Es zeigen:

Fig. 1
in Seitenansicht ohne Maschinenrahmen das Grundprinzip der erfindungsgemäßen Jacquardmaschine,
Fig. 2
in Stirnansicht vereinfacht die Zuordnung der Jacquardmaschine gem. Fig. 1 zum Maschinenrahmen.
The invention is explained in more detail with reference to the embodiment shown in the drawing. Show it:
Fig. 1
in side view without machine frame, the basic principle of the jacquard machine according to the invention,
Fig. 2
in front view simplifies the assignment of the jacquard machine acc. Fig. 1 to the machine frame.

Die Erfindung wird anhand einer Doppelhub-Offenfach-Jacquardmaschine mit in Kettfadenrichtung verlaufenden Hubmessern und mit Schrägfachbildung erläutert. Die Erfindung ist jedoch auch auf solche Jacquardmaschinen anwendbar, bei denen die Hubmesser in Schußfadenrichtung verlaufen und bei denen keine Schrägfach sondern ein Geradefach gebildet wird, also für jede Jacquardmaschine, bei der zwei Sätze von Hubmessern zwischen zwei Fachstellungen bewegt werden, wobei es auf die Ausbildung des Eingriffs zwischen Hubmesser und Platinen und darauf, ob die Platinen in Hochfachstellung oder Tieffachstellung angesteuert werden, nicht ankommt.The invention is explained on the basis of a double-stroke open-pocket jacquard machine with lifting knives running in the warp thread direction and with inclined pocket formation. However, the invention is also applicable to those jacquard machines in which the lifting knives run in the weft direction and in which no inclined pocket but a straight pocket is formed, that is to say for each jacquard machine in which two sets of lifting knives are moved between two specialist positions, with reference to the training the intervention between the lifting knife and the circuit boards and whether the circuit boards are actuated in the high or low position is not important.

In einem Maschinenrahmen 1, der in Fig. 1 nicht dargestellt ist, und der mit der übrigen Webmaschine zu verbinden ist, sind zwei Sätze von Hubmessern 2 bzw. 3 angeordnet, die zwischen einer Hochfachstellung und einer Tieffachstellung zu bewegen sind. In einer der beiden Fachstellungen wird mittels einer nicht dargestellten Steueranordnung bestimmt, ob eine jeweilige Platine 4 von dem jeweiligen Hubmesser 2 oder 3 in die andere Fachstellung mitzunehmen ist oder nicht. Solche Steueranordnungen sind vielfältig bekannt, es kann sich um mechanische oder elektromechanische handeln. In der Tieffachstellung können dabei die Platinen 4 an einem schematisch dargestellten Platinenboden 5 zur Auflage kommen. Jede Platine 4 ist mit einer Chorschnur 8 verbunden, die über einen Harnischboden 6 geführt und zweckmäßig federnd festgelegt ist (Harnischniederzug). Diese Chorschnüre 8 sind mit dem zugehörigen Kettfaden 7 verbunden, wie das an sich üblich ist.In a machine frame 1, which is not shown in Fig. 1, and which is to be connected to the rest of the weaving machine, two sets of lifting knives 2 and 3 are arranged, which can be moved between a high position and a low position. In one of the two specialist positions, a control arrangement (not shown) is used to determine whether or not a respective circuit board 4 is to be taken from the respective lifting knife 2 or 3 into the other specialist position. Such control arrangements are widely known, it can be mechanical or electromechanical. In the low position, the boards 4 can come to rest on a schematically illustrated board base 5. Each board 4 is connected to a choir cord 8 which is guided over a harness floor 6 and is expediently fixed in a resilient manner (harness pull down). These choir cords 8 are connected to the associated warp thread 7, as is usual.

Über die Breite der Jacquardmaschine bzw. des Maschinenrahmens 1 sind die Hubmesser 2 des ersten Satzes und die Hubmesser 3 des zweiten Satzes jeweils etwa parallel zueinander sowie zu den Hubmessern 3, 2 des anderen Satzes jeweils versetzt angeordnet. Bei den Hubmessern 2, 3 handelt es sich im wesentlichen um Flachstahlteile, die mit Einkerbungen, Ausnehmungen oder dgl. versehen sind, über die die Platinen 4 über entsprechende Haken oder dgl. mitnehmbar sind, sofern die Platinen 4 durch die nicht dargestellte Steueranordnung nicht aus dem Bewegungsweg der Hubmesser 2, 3 herausbewegt sind.The lifting knives 2 of the first set and the lifting knives 3 of the second set are each arranged approximately parallel to one another and offset from the lifting knives 3, 2 of the other set across the width of the jacquard machine or the machine frame 1. The lifting knives 2, 3 are essentially flat steel parts which are provided with notches, recesses or the like, via which the boards 4 can be taken along by means of corresponding hooks or the like, provided the boards 4 are not made by the control arrangement (not shown) the path of movement of the lifting knives 2, 3 are moved out.

Jedes Hubmesser ist an seinen Enden über eine jeweilige Hebelanordnung mit einer Bewegungseinrichtung verbunden, die für alle Hubmesser des gleichen Satzes gemeinsam ist.Each lifting knife is connected at its ends via a respective lever arrangement to a movement device which is common to all lifting knives of the same set.

Das in Fig. 1 rechte Ende 9 des Hubmessers 2 ist über eine Hebelanordnung 10 mit einer Klemmeinrichtung 11 verbunden, die an einer oszillierenden Welle 12 festgelegt ist. Das in Fig. 1 linke Ende 13 des Hubmessers 2 ist über eine Hebelanordnung 14 mit einer Klemmeinrichtung 15 verbunden, die an einer oszillierenden Welle 16 festgelegt ist.The right end 9 of the lifting knife 2 in FIG. 1 is connected via a lever arrangement 10 to a clamping device 11 which is fixed to an oscillating shaft 12. The left end 13 in FIG. 1 of the lifting knife 2 is connected via a lever arrangement 14 to a clamping device 15 which is fixed to an oscillating shaft 16.

Das rechte Ende 17 des Hubmessers 3 des anderen Hubmessersatzes ist über eine Hebelanordnung 18 mit einer Klemmeinrichtung 19 verbunden, die an einer oszillierenden Welle 20 festgelegt ist. Das linke Ende 21 dieses Hubmessers 3 ist über eine Hebelanordnung 22 mit einer Klemmeinrichtung 23 verbunden, die an einer oszillierenden Welle 24 festgelegt ist.The right end 17 of the lifting knife 3 of the other lifting knife set is connected via a lever arrangement 18 to a clamping device 19 which is fixed to an oscillating shaft 20. The left end 21 of this lifting knife 3 is connected via a lever arrangement 22 to a clamping device 23 which is fixed to an oscillating shaft 24.

Jeder Satz von Hubmessern ist also über einen jeweiligen Satz von Hebelanordnungen an beiden Enden mit je einem Paar von oszillierenden Wellen so verbunden, daß eine Schwenkbewegung der oszillierenden Wellen eine entsprechende Hubbewegung der Hubmesser erreicht.Each set of lifting knives is thus connected to a pair of oscillating shafts at both ends via a respective set of lever arrangements in such a way that a pivoting movement of the oscillating shafts achieves a corresponding lifting movement of the lifting knives.

Dabei ist zur Erreichung einer gleich stabilen Lage für alle Hubmesser 2, 3 das jeweilige Hubmesser 2, 3 mit den endseitig zugeordneten Hebelanordnungen 10, 14 bzw. 18, 22 so verbunden, daß jedes Hubmesser an einem Ende mit einer Hebelanordnung hängend und am anderen Ende mit der dort zugeordneten Hebelanordnung stehend befestigt ist, d.h., daß die einem Hubmesser 2, 3 bzw. einem Hubmessersatz zugeordneten oszillierenden Wellen, nämlich einerseits 12 und 16 und andererseits 20 und 24; über Kreuz angeordnet sind.In order to achieve an equally stable position for all lifting knives 2, 3, the respective lifting knife 2, 3 is connected to the lever arrangements 10, 14 and 18, 22 assigned at the end so that each lifting knife is suspended at one end with a lever arrangement and at the other end is fixed upright with the lever arrangement assigned there, ie that the oscillating shafts assigned to a lifting knife 2, 3 or a lifting knife set, namely on the one hand 12 and 16 and on the other hand 20 and 24; are arranged crosswise.

Zur Übertragung der oszillierenden Bewegung der jeweiligen oszillierenden Welle 12, 16, 20, 24 als Hubbewegung auf das zugehörige Hubmesser 2, 3 ist im Ausführungsbeispiel die Hebelanordnung zweiteilig ausgebildet, wie das anhand der Hebelanordnung 10 erläutert wird. Diese besteht aus einem mit der Klemmeinrichtung 11 verbundenen ersten Hebelarm 25 und einem zweiten Hebelarm 26, der an dem rechten Ende 9 des Hubmessers 2 einerseits und an dem freien Ende des ersten Hebelarms 25 andererseits jeweils schwenkbar befestigt ist. Sind die zweiten Hebelarme der einem Hubmesser zugeordneten beiden Hebelanordnungen so bemessen, daß die Hubmesser im wesentlichen parallel zueinander verlaufen (z.B.) horizontal angeordnet sind, so wird eine Geradefachbildung erreicht. Ist die Bemessung jedoch wie im Ausführungsbeispiel gewählt, so wird eine Schrägfachbildung erzielt. Wie erwähnt, ist jeder erste Hebelarm der Hebelanordnung in der zugehörigen Klemmeinrichtung befestigt. Ist diese Befestigung in Erstreckungsrichtung des Hebelarms verstellbar ausgebildet, so kann eine Feinjustierung des Fachhubes erreicht werden. Es hat sich gezeigt, daß Justierungen um ca. 5 mm möglich sind.To transmit the oscillating movement of the respective oscillating shaft 12, 16, 20, 24 as a lifting movement to the associated lifting knife 2, 3, the lever arrangement is formed in two parts in the exemplary embodiment, as will be explained with reference to the lever arrangement 10. This consists of a first lever arm 25 connected to the clamping device 11 and a second lever arm 26 which is pivotably attached to the right end 9 of the lifting knife 2 on the one hand and to the free end of the first lever arm 25 on the other hand. If the second lever arms of the two lever arrangements assigned to a lifting knife are dimensioned such that the lifting knives are essentially parallel to one another (e.g.) are arranged horizontally, then a straight shed formation is achieved. However, if the dimensioning is selected as in the exemplary embodiment, inclined subject formation is achieved. As mentioned, each first lever arm of the lever arrangement is fastened in the associated clamping device. If this attachment is adjustable in the direction of extension of the lever arm, then a fine adjustment of the specialist stroke can be achieved. It has been shown that adjustments of approximately 5 mm are possible.

Wie in Fig. 2 dargestellt, sind die oszillierenden Wellen 12, 20, und auch die in Fig. 2 nicht dargestellten beiden anderen oszillierenden Wellen 16, 24 im Maschinenrahmen 1 gelagert und tragen lediglich über die Klemmeinrichtungen 11, 19 (bzw. 23, 15) und die zugehörigen Hebelanordnungen die jeweiligen Hubmesser. Bei entsprechender Länge der oszillierenden Wellen 12, 20 können diese über eine Stützeinrichtung am Maschinenrahmen 1 abgestützt sein. Bei dem Ausführungsbeispiel gem. Fig. 2 ist eine Stützrohr 27 mit dem Maschinenrahmen 1 verbunden, insbesondere verschweißt, wobei am Umfang des Stützrohrs 27 Abstützungen 28 bzw. 29 angebracht, z.B. angeschweißt sind, die die oszillierenden Wellen 12 bzw. 20 über schematisch dargestellte Lager 30 bzw. 31 aufnehmen. Über die Länge der oszillierenden Welle 12, 20 (bzw. 16, 24) können mehrere solche Abstützungen verteilt angeordnet sein. Hierdurch wird vermieden, daß sich die jeweilige oszillierende Welle durchbiegen könnte.As shown in FIG. 2, the oscillating shafts 12, 20, and also the two other oscillating shafts 16, 24, not shown in FIG. 2, are mounted in the machine frame 1 and only support the clamping devices 11, 19 (or 23, 15 ) and the associated lever arrangements the respective lifting knives. With a corresponding length of the oscillating shafts 12, 20, these can be supported on the machine frame 1 via a support device. In the embodiment according to. Fig. 2, a support tube 27 is connected to the machine frame 1, in particular welded, with supports 28 and 29 attached, for example welded, to the circumference of the support tube, which receive the oscillating shafts 12 and 20 via schematically illustrated bearings 30 and 31 . Several such supports can be arranged distributed over the length of the oscillating shaft 12, 20 (or 16, 24). This prevents the respective oscillating wave from bending.

In Fig. 2 ist im übrigen der Versatz der Hubmesser 2, 3 der beiden Hubmessersätze schematisch angedeutet.2, the offset of the lifting knives 2, 3 of the two lifting knife sets is indicated schematically.

An einem aus dem Maschinenrahmen 1 herausragenden Wellenstumpf jeder oszillierenden Welle 12, 16, 20, 24 ist ein jeweiliger Träger 32, 33, 34, 35 befestigt. Jeder Träger ist im wesentlichen U-förmig und dabei mittig mit der jeweiligen oszillierenden Welle verbunden. An einem Schenkel trägt jeder Träger, wie das anhand des Trägers 32 erläutert wird, eine Kurvenrolle 36, die in Anlage an einem Exzenter 37 ist, der auf einer rotierenden Welle 38 befestigt ist. Die rotierende Welle 38 ist mit dem Antriebsmotor 39 der Webmaschine verbunden, und zwar zweckmäßig über eine nicht dargestellte Getriebeanordnung. Vorzugsweise ist der Exzenter 37 austauschbar ausgebildet. Durch geeignete Wahl der Abmessungen des Exzenters 37 sind unterschiedliche Fachhübe im Sinne einer Grobeinstellung möglich und durch Austausch des Exzenters 37 für jeden Einzelfall neu bestimmbar. Es ist daher auch zweckmäßig, wenn, wie in Fig. 2 dargestellt, die rotierende Welle 38 in dem Maschinenrahmen 1 gelagert ist und wie dargestellt, das Stützrohr 27 durchsetzt. Dadurch wird große Zugänglichkeit zum Exzenter 37 und den den oszillierenden Wellen 12, 20 zugeordneten außerhalb des Maschinenrahmens 1 liegenden Teilen erreicht.A respective support 32, 33, 34, 35 is attached to a shaft stub of each oscillating shaft 12, 16, 20, 24 protruding from the machine frame 1. Each carrier is essentially U-shaped and is connected centrally to the respective oscillating shaft. Each carrier carries, as is explained with reference to the carrier 32, a cam roller 36 on one leg, which is in contact with an eccentric 37 which is fastened on a rotating shaft 38. The rotating shaft 38 is connected to the drive motor 39 of the loom, expediently via a gear arrangement, not shown. The eccentric 37 is preferably designed to be interchangeable. Through a suitable choice of the dimensions of the eccentric 37, different shifts in the sense of a rough adjustment are possible and can be redetermined for each individual case by exchanging the eccentric 37. It is therefore also expedient if, as shown in FIG. 2, the rotating shaft 38 is mounted in the machine frame 1 and, as shown, passes through the support tube 27. As a result, great accessibility to the eccentric 37 and the parts outside the machine frame 1 associated with the oscillating shafts 12, 20 is achieved.

Es kann nun jeder oszillierenden Welle ein eigener Exzenter mit mit dem Antriebsmotor 39 gekoppelter rotierender Welle zugeordnet sein. Von Vorteil ist jedoch wie im Ausführungsbeispiel dargestellt, mit dem Exzenter 37 auch die Kurvenrolle 40 am Träger 34 in Anlage, und zwar derart, daß dann, wenn über den Eingriff zwischen Kurvenrolle und Exzenter die Hubmesser des einen Hubmessersatzes die Hochfachstellung erreicht haben, die Hubmesser des anderen Hubmessersatzes dann die Tieffachstellung erreicht haben, und umgekehrt. Beim Ausführungsbeispiel ist die Aubildung des Exzenters 37 und die Zuordnung der Kurvenrollen 36, 40 derart, daß bei einer Umdrehung der rotierenden Welle 38 ein vollständiger Hub durchgeführt wird, also jedes Hubmesser 2, 3 beide Fachstellungen einmal erreicht hat. Zu diesem Zweck sind die beiden Kurvenrollen 36, 40 bezüglich der Achse der rotierenden Welle 38 um 180° versetzt angeordnet.Each oscillating shaft can now be assigned its own eccentric with a rotating shaft coupled to the drive motor 39. However, as shown in the exemplary embodiment, with the eccentric 37, the cam roller 40 on the carrier 34 is in contact, in such a way that when the lifting knives of the one lifting knife set have reached the high position via the engagement between the cam roller and the eccentric, the lifting knives of the other lifting knife set then have reached the low position, and vice versa. In the exemplary embodiment, the formation of the eccentric 37 and the assignment of the cam rollers 36, 40 is such that a complete stroke is carried out with one revolution of the rotating shaft 38, that is to say each lifting knife 2, 3 has reached both specialist positions once. For this purpose, the two cam rollers 36, 40 are arranged offset by 180 ° with respect to the axis of the rotating shaft 38.

Ferner sind die jeweiligen anderen Schenkel der Träger 32, 34 über eine an diesen Schenkeln angelenkte Lasche 41 miteinander verbunden, wobei die Lasche über ein Langloch 42 die rotierende Welle 38 umgreift. Auf diese Weise wird eine zwangsläufige Anlage der Kurvenrollen 36, 40 am Exzenter 37 über eine formschlüssige Verbindung erreicht.Furthermore, the respective other legs of the carriers 32, 34 are connected to one another via a tab 41 articulated on these legs, the tab engaging around the rotating shaft 38 via an elongated hole 42. In this way, an inevitable contact of the cam rollers 36, 40 on the eccentric 37 is achieved via a positive connection.

Die beiden anderen oszillierenden Wellen 16, 24 sind in im wesentlichen identischer Weise über Kurvenrollen 43, 44 in formschlüssiger Weise in Anlage an einem Exzenter 45 einer rotierenden Welle 46, die ebenfalls mit dem Antriebsmotor 39 gekoppelt ist, beispielsweise über einen Riemenantrieb oder dgl. Dieser Riemenantrieb kann die Verbindung mit der rotierenden Welle 38 erzielen, die ihrerseits mit dem Antriebsmotor 39 gekoppelt ist. Auch hier ist eine Lasche 47 vorgesehen, die die formschlüssige Anlage bewirkt.The other two oscillating shafts 16, 24 are in an essentially identical manner via cam rollers 43, 44 in a form-fitting manner in contact with an eccentric 45 of a rotating shaft 46, which is also coupled to the drive motor 39, for example via a belt drive or the like Belt drive can achieve the connection to the rotating shaft 38, which in turn is coupled to the drive motor 39. Here, too, a tab 47 is provided, which brings about the positive engagement.

Im einfachsten Fall kann bei Schrägfachbildung eine der beiden Exzentergetriebeanordnungen durch eine einfache Lagerung im Rahmen ersetzt sein, wobei jedoch durch geeignete Länge der Hubmesser sichergestellt sein muß, daß für alle Platinen der notwendige Mindesthub erzielt wird. Aus diesem Grund ist die gewählte Anordnung vorzuziehen, da hierdurch kürzere Messer erreichbar sind.In the simplest case, one of the two eccentric gear arrangements can be replaced by a simple mounting in the frame in the case of inclined compartment formation, but with a suitable length of the It must be ensured that the necessary minimum stroke is achieved for all boards. For this reason, the selected arrangement is preferable, as this enables shorter knives to be reached.

Die gezeigte Ausbildung gewährleistet eine sichere Synchronisation der Bewegungen, insbesodere der Bewegung der Hubmesser 2 und 3 zwischen ihren beiden jeweiligen Fachstellungen. Jedoch kann auch eine andere diese Synchronisation bewirkende Getriebeanordnung gewählt sein.The training shown ensures reliable synchronization of the movements, in particular the movement of the lifting knives 2 and 3 between their two respective specialist positions. However, another gear arrangement which effects this synchronization can also be selected.

Bei besonderer Länge der oszillierenden Wellen 12, 16, 20, 24 kann, wie in Fig. 2 durch Strichpunktlinien angedeutet, auch auf der anderen Seite des Maschinenrahmens 1 eine vergleichbare Getriebeanordnung 50 vorgesehen sein, die der in Fig. 2 auf der linken Seite dargestellten Getriebeanordnung im wesentlichen entspricht. Jedoch ist deren Ausbaubarkeit und Austauschbarkeit erschwert, da auf dieser Seite die Verbindung zum Antriebsmotor 39 bewirkt ist.With a special length of the oscillating shafts 12, 16, 20, 24, as indicated by dash-dotted lines in FIG. 2, a comparable gear arrangement 50 can also be provided on the other side of the machine frame 1, that of the one shown in FIG. 2 on the left side Gear arrangement essentially corresponds. However, their expandability and interchangeability are difficult because the connection to the drive motor 39 is effected on this side.

Fig. 1 zeigt ferner, daß den Hubmessern 2 und 3 eine Führung 48 bzw. 49 zugeordnet ist, die im diesbezüglich angedeuteten Maschinenrahmen 1 in der gleichen Richtung wie die Hubmesser 2, 3 bewegbar ist. Diese Führungen 48, 49 sind vorzugsweise mittig bezüglich der Angriffspunkte der Platinen 4 bzw. der Hubmesser 2, 3 vorgesehen. Mittels dieser Führungen 48, 49 wird einerseits ein Knicken oder Ausbiegen der Messer 2, 3 aus der der Fig. 1 entsprechenden Zeichenebene verhindert, und wird andererseits ein Verschieben der Hubmesser 2, 3 in deren Längserstreckung und parallel zur Zeichenebene verhindert, um so eine zu große Verbiegung oder Verschwenkung der Platinen 4 zu verhindern.1 also shows that the lifting knives 2 and 3 are assigned a guide 48 and 49, respectively, which can be moved in the machine frame 1 indicated in this regard in the same direction as the lifting knives 2, 3. These guides 48, 49 are preferably provided centrally with respect to the points of attack of the plates 4 or the lifting knives 2, 3. These guides 48, 49 on the one hand prevent the knives 2, 3 from buckling or bending out of the plane of the drawing corresponding to FIG. 1, and on the other hand prevent the lifting knives 2, 3 from being displaced in their longitudinal extent and parallel to the plane of the drawing, in order to prevent them from being drawn prevent large bending or pivoting of the boards 4.

Die erfindungsgemäße Ausbildung der Jacquardmaschine erreicht, daß nahezu ausschließlich lediglich die Hubmesser zu bewegen sind, wodurch die zu bewegende Masse aufs äußerste verringert wird. Darüber hinaus kann die oszillierende Welle noch abgestützt werden, um eine Durchbiegung zu vermeiden. Auf diese Weise wird die Belastung, die auf die antreibende Anordnung ausgeübt wird, weitgehend verringert, wobei weitgehend rotierende Teile verwendet werden, die einfach im Maschinenrahmen gelagert werden können, wodurch die Konstruktion wesentlich vereinfacht ist. Ferner ist die konstruktive Ausbildung vereinfacht und ist einfache Justierung möglich.The design of the jacquard machine according to the invention achieves that only the lifting knives move almost exclusively are, whereby the mass to be moved is reduced to the utmost. In addition, the oscillating shaft can still be supported in order to avoid deflection. In this way, the load which is exerted on the driving arrangement is largely reduced, largely using rotating parts which can be easily stored in the machine frame, as a result of which the construction is considerably simplified. Furthermore, the design is simplified and simple adjustment is possible.

Claims (18)

  1. A double lift, open shed Jacquard machine,
    having a machine frame (1),
    having two sets of lifting knives (2, 3), which move in the direction of the warp thread, arranged alternately and so as to be movable counter to one another in the machine frame (1) between two shed positions,
    having hooks (4) mounted in the machine frame (1) which are pattern controlled and can be either entrained or not, as desired, by one of the associated lifting knives (2, 3), and
    having a driving arrangement (32-50) to move the two sets of lifting knives (2, 3),
    characterised in that,
    all lifting knives (2, 3) of each set of lifting knives are linked to at least one common oscillating shaft (12, 16; 20, 24), and
    in that the oscillating shafts (12, 16; 20, 24) are mounted in the machine frame (1) at right angles to the reach of the lifting knives and to the direction of movement of the lifting knives.
  2. A Jacquard machine according to claim 1,
    characterised in that,
    the lifting knives (2, 3) of each set of lifting knives are each linked at both of their ends (9, 13; 17, 21) to a respective oscillating shaft (12, 16; 20, 24).
  3. A Jacquard machine according to claim 1 or 2,
    characterised in that,
    the lifting knives (2, 3) are linked to the respective oscillating shaft (12, 16; 20, 24) by a lever arrangement (10, 14, 18, 22).
  4. A Jacquard machine according to any of claims 1 to 3,
    characterised in that,
    the oscillating shafts (12, 16; 20, 24) of the two sets of lifting knives can be driven synchronously.
  5. A Jacquard machine according to any of claims 1 to 4,
    characterised by an eccentric gear unit whose rotating shaft (38, 46) can be rotated by the driving arrangement (39), and whose eccentric (37, 45) pivots the respective oscillating shaft (12, 20; 16, 24) by bearing on a follower roller (36, 40; 43, 44) which is non-rotatably secured to the respective oscillating shaft (12, 16; 20, 24).
  6. A Jacquard machine according to claim 5,
    characterised in that,
    the follower rollers (36, 40; 43, 44) of one oscillating shaft (12, 20; 16, 24) of each of the two sets of lifting knives bear in common on an eccentric (37; 45), offset in such a way that the counter movement is effected.
  7. A Jacquard machine according to claim 6,
    characterised in that,
    supports (32, 33, 34, 35) of the follower rollers (36, 40; 43, 44) are connected to one another in pairs on the respective oscillating shafts (12, 16; 20, 24) by means of a link (41, 47) embracing the respective rotating shaft.
  8. A Jacquard machine according to any of claims 5 to 7,
    characterised in that,
    the rotating shaft (38, 46) passes through the machine frame (1), is mounted therein and is surrounded by a supporting tube (27) fixed in the machine frame (1).
  9. A Jacquard machine according to claim 8,
    characterised in that,
    the respective oscillating shaft (12, 16; 20, 24) is mounted along its length in supports (28, 29) rigidly fixed to the machine frame (1), e.g. to the supporting tube (27), so as to prevent bending.
  10. A Jacquard machine according to claim 2 and any of claims 3 to 9,
    characterised in that,
    the two oscillating shafts (12, 16; 20, 24) associated with a respective set of lifting knives are arranged crosswise in the machine frame (1) relative to those of the other set of lifting knives in a way that each lifting knife (2, 3) is linked to the respective oscillating shaft (12, 16; 20, 24) with one end being suspended and the other end standing.
  11. A Jacquard machine according to any of claims 3 to 10,
    characterised in that,
    the ends of the lever arrangement (10, 14, 18, 22) on the shaft side are secured in a clamping device (11, 15, 19, 23) connected to the oscillating shaft (12, 16; 20, 24) so as to be adjustable at right angles to the axis of the shaft for adjustment of the shed lift.
  12. A Jacquard machine according to any of claims 5 to 11,
    characterised in that,
    the eccentric (37, 45) is exchangeable so as to alter the shed lift.
  13. A Jacquard machine according to any of claims 5 to 12,
    characterised in that,
    at least in the case of long oscillating shafts (12, 16; 20, 24), a respective eccentric gear (36, 37, 40, 41; 50) engages with both ends, the gears being synchronized with one another and in particular being provided on the same rotating shaft (38, 46).
  14. A Jacquard machine according to any of claims 1 to 13,
    characterised in that,
    the oscillating shafts (12, 16; 20, 24) can be pivoted through a pivot angle of about 20 to 30°.
  15. A Jacquard machine according to any of claims 1 to 14,
    characterised in that,
    along the length of each lifting knife (2, 3) there is a guide (48, 49) which is arranged to slide in the machine frame (1).
  16. A Jacquard machine according to claim 15,
    characterised in that,
    the guide (48, 49) is arranged substantially centrally.
  17. A Jacquard machine according to claim 15 or 16,
    characterised by a common arrangement of the guides (48, 49) for the lifting knives (2, 3) of one set of lifting knives.
  18. A Jacquard machine according to any of claims 1 to 17,
    characterised in that,
    it is a Jacquard machine wherein a diagonal shed is formed.
EP88110491A 1987-07-02 1988-06-30 Double-lift open-shed Jacquard machine Expired - Lifetime EP0297586B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873721932 DE3721932A1 (en) 1987-07-02 1987-07-02 DOUBLE LIFT OPEN-PACK JACQUARD MACHINE
DE3721932 1987-07-02

Publications (3)

Publication Number Publication Date
EP0297586A2 EP0297586A2 (en) 1989-01-04
EP0297586A3 EP0297586A3 (en) 1989-11-23
EP0297586B1 true EP0297586B1 (en) 1995-12-13

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ID=6330789

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88110491A Expired - Lifetime EP0297586B1 (en) 1987-07-02 1988-06-30 Double-lift open-shed Jacquard machine

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US (1) US4936352A (en)
EP (1) EP0297586B1 (en)
JP (1) JPS6477641A (en)
CS (1) CS275707B6 (en)
DE (2) DE3721932A1 (en)

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CN104372487B (en) * 2013-08-14 2016-12-28 王伯奇 Double-lift griffes differential jacquard drive mechanism and the kind of drive thereof
CN103526383A (en) * 2013-10-31 2014-01-22 江苏万工科技集团有限公司 Double-rocker swing block seven-rod full-jacquard mechanism
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BE1024030B1 (en) 2016-04-08 2017-11-06 Nv Michel Van De Wiele JACQUARD WITH RENEWED DRIVE SYSTEM
BE1024029B1 (en) 2016-04-08 2017-11-06 Nv Michel Van De Wiele GAAP FORMAT FOR A WEAVING DEVICE

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Also Published As

Publication number Publication date
CS275707B6 (en) 1992-03-18
DE3721932A1 (en) 1989-01-19
DE3721932C2 (en) 1990-01-04
US4936352A (en) 1990-06-26
EP0297586A3 (en) 1989-11-23
DE3854769D1 (en) 1996-01-25
JPS6477641A (en) 1989-03-23
EP0297586A2 (en) 1989-01-04

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