EP3216903B1 - Warp knitting machine - Google Patents

Warp knitting machine Download PDF

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Publication number
EP3216903B1
EP3216903B1 EP16159777.8A EP16159777A EP3216903B1 EP 3216903 B1 EP3216903 B1 EP 3216903B1 EP 16159777 A EP16159777 A EP 16159777A EP 3216903 B1 EP3216903 B1 EP 3216903B1
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European Patent Office
Prior art keywords
bar
knitting machine
warp
slide
needle
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EP16159777.8A
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German (de)
French (fr)
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EP3216903A1 (en
Inventor
Martin Schorlemmer
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Karl Mayer R&D GmbH
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Karl Mayer Textilmaschinenfabrik GmbH
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Priority to EP16159777.8A priority Critical patent/EP3216903B1/en
Priority to CN201610379684.XA priority patent/CN107177930B/en
Publication of EP3216903A1 publication Critical patent/EP3216903A1/en
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Publication of EP3216903B1 publication Critical patent/EP3216903B1/en
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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B27/00—Details of, or auxiliary devices incorporated in, warp knitting machines, restricted to machines of this kind
    • D04B27/06—Needle bars; Sinker bars
    • D04B27/08—Driving devices therefor
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B27/00—Details of, or auxiliary devices incorporated in, warp knitting machines, restricted to machines of this kind
    • D04B27/10—Devices for supplying, feeding, or guiding threads to needles
    • D04B27/24—Thread guide bar assemblies

Definitions

  • the invention relates to a warp knitting machine with a needle bar, which is driven by a needle bar drive from a main shaft, and a slide bar, which is controlled by a designed as Schieberbarrindirektantrieb slide bar drive from the main shaft.
  • Such a warp knitting machine is made DE 19 60 871 A1 known. Since the slide bar is driven independently of the needle bar, you can make the movements of the hook parts of the knitting needles closing or leaving open tongue parts in any uniform or non-uniform change.
  • the needle bar carries a plurality of knitting needles, which are also referred to as working needles.
  • the knitting needles have a head which forms a kind of hook with which a thread can be pulled through a previously formed stitch in a stitch forming operation.
  • a pusher is provided for each knitting needle which covers the tip of the hook when the knitting needle head is pulled through the previously formed stitch.
  • the warp knitting machine has even more ingots, which carry other knitting tools, such as guide needles or the like.
  • the needle bar and the slide bar are both driven by the main shaft.
  • the center of gravity of the slide bar is farther from the axis of the main shaft than the center of mass of the needle bar.
  • the pusher bar must be faster accelerated and decelerated in a stitch forming process than the needle bar.
  • the slide bar drive has therefore been designed in such a way that a ram driven by the main shaft drives a lever which is connected in a rotationally fixed manner to a shaft. On this shaft, several other levers are rotatably mounted, which drive the slide bar via plunger. This makes it possible to provide distributed over the working width of the warp knitting machine a large number of other levers, so that the slide bar can be driven via a correspondingly large number of support points.
  • the shaft is provided in addition to a shaft about which the needle bar is pivoted in a stitch forming operation. Accordingly, a relatively large space is required.
  • US 6 092 398 A shows another warp knitting machine in the form of a crochet galloon machine with a knitting needle bar, which is driven by an eccentric drive of a main shaft. In addition, a separate drive for the slide bar is provided.
  • DE 690 15 599 T2 shows a control device for sliding needles in crochet galloon machines.
  • the crochet galloon machine has a knitting needle bar with a knitting needle bar drive and a slider needle bar with a drive formed separately therefrom.
  • the invention has for its object to provide a low-cost warp knitting machine that can work with high productivity.
  • the Schiebebarrendirektantrieb on a plunger which is connected via a hinge with a Schieberbarrennam, which is mounted in a linear guide.
  • the linear guide can be arranged for example in a Nadelbarrenarna, so that the needle bar and the slide bar can be moved together and the Schieberbarrindirektantrieb only controls the movement of the slide bar relative to the needle bar.
  • the linear guide has a guide direction and the slide bar direct drive has a drive direction which encloses an obtuse angle with the guide direction.
  • This obtuse angle is maintained throughout the stitching process. It may change slightly during a stitching process, but remains an obtuse angle.
  • the slide bar is designed as a hollow profile made of metal.
  • the mass of the slide bar can be kept small in a cost-effective manner, so that the slide bar direct drive must also accelerate and decelerate only this smaller mass. This has a positive effect on the working speed the warp knitting machine, which can be increased. The risk of vibration formation is kept small.
  • the hollow profile has a specific rigidity, which is greater by at least 40% than the specific rigidity of a solid profile with the same outer contour and of the same material.
  • the specific stiffness is the stiffness related to the mass of the hollow profile.
  • the needle bar drive preferably has a knock-off lever and a needle bar direct drive.
  • the knock-down lever is used to effect movement of the needle bar transversely to the offset direction, ie across the working width of the needle from the warp knitting machine.
  • the Nadelbarrendirektantrieb is then only responsible for the movement of the needle bar in the third direction, ie perpendicular to the transverse movement and perpendicular to the offset direction. Again, you can then spare more levers and waves.
  • the Schiebebrarrendirektantrieb and the Nadelbarrindirektantrieb each have one of the main shaft adjacent foot point and the foot are arranged in the same peripheral portion of the main shaft.
  • the foot points are arranged in a direction parallel to the axis of the main shaft one behind the other. You are thus at the same circumferential position of the main shaft, but can take during a stitch forming operation different radial positions relative to the main shaft, if necessary. This saves space.
  • the needle bar is designed as a hollow profile made of metal. Even with the needle bar can be saved in a cost-effective manner mass.
  • the sliding bar drive in a direction parallel to the axis of the main shaft on a plurality of drive sections, which have a distance of at least 70 cm, preferably at least 80 cm. This distance is significantly greater than the distance previously used when using lever-shaft lever drives. This is possible in particular if the slide bar has sufficient specific rigidity.
  • a part of a warp knitting machine 1 is shown with a needle bar 2, which carries a plurality of knitting needles, which are arranged perpendicular to the plane one behind the other.
  • the knitting needles are not shown in the drawing.
  • the warp knitting machine 1 has a Slider bar 3, which carries a slider for each knitting needle. The slides are not shown.
  • the slide bar 3 is mounted on a slide bar carrier 4, which is guided in a linear guide arrangement 5.
  • the linear guide assembly 5 has a plurality of linear guides, which are arranged perpendicular to the plane one behind the other.
  • the linear guide arrangement 5 has a guide direction 6.
  • the linear guide arrangement 5 is arranged in a needle bar carrier 7 which carries the needle bar 2.
  • the needle bar carrier 7 in turn is movably mounted on a carrier lever 8.
  • the carrier lever 8 is rotatably mounted on a shaft 9.
  • the shaft 9 is driven via a knock-off lever 10, which is also non-rotatably connected to the shaft 9, with a pivoting movement via a plunger 11 which is driven by a main shaft, not shown.
  • the drive of the plunger 11 through the main shaft can be done via a crank or an eccentric or otherwise.
  • the knock-off lever 10 and the carrier lever 8 may have a distance in a direction parallel to the axis of the shaft 9. It can be provided as a strike lever 10 more carrier lever 8.
  • a movement of the needle bar carrier 7 and thus the needle bar 2 with respect to the carrier lever 8 is effected by a Nadelbarrindirektantrieb having a needle bar plunger 12 which is pivotally connected to the needle bar carrier 7.
  • the needle bar plunger 12 has a foot point 13, via which the main shaft acts on the needle bar plunger 12.
  • the base which can also be provided, for example, with a roller or other suitable bearing point, for example, can rest against an eccentric or a cam on the main shaft.
  • a movement of the slide bar 3 relative to the needle bar 2 is effected by a slide bar drive, which is designed as Schieberbarrendirektantrieb.
  • the Schieberbarrindirektantrieb has a slide bar ram 14 having a base point 15.
  • the foot 15 is provided with a roller 16 which bears against the main shaft, wherein the main shaft may in turn comprise an eccentric or a cam structure.
  • the base 13 of the needle bar plunger 12 and the base 15 of the slide bar plunger 14 are offset parallel to the axis of the shaft 9. But they are in the same circumferential portion of the main shaft and preferably in a direction parallel to the axis of the main shaft directly behind one another, ie at the same angular position relative to the main shaft. In the radial direction to the main shaft they can, if necessary, have an offset.
  • the advantageous embodiment is shown.
  • the slide bar plunger 14 has a longitudinal axis 17.
  • the slider bar plunger 14 is moved in a direction parallel to this longitudinal axis 17.
  • the slide bar tappet 14 is connected at the end remote from the base 15 via a joint 18 with the slide bar carrier 4.
  • the longitudinal axis 17 corresponds to the drive direction of the slide bar plunger 14.
  • This drive direction, i. the longitudinal axis 17, always encloses an obtuse angle with the guide direction 6. As a result, although a small part of the drive power is not transmitted to the slide bar 3. But one is much more flexible in the design.
  • the slide bar 3 is formed of a metal and formed as a hollow profile.
  • magnesium is considered as metal.
  • the hollow profile of the slide bar 3 has a specific rigidity, ie a stiffness per mass, which is at least 40% greater than the specific rigidity of a solid profile with the same outer contour and of the same material.
  • the mass of the slide bar becomes small while increasing dynamic stiffness.
  • the result is an increased resistance to deformation, so that the number of "support points", ie the number of points where you must use a slide bar plunger 14 to drive the slide bar 3, can be kept small.
  • the slider-bar direct drive now only requires 5 interpolation points to increase the distance between adjacent interpolation points from 55 cm to 82.5 cm may vary somewhat depending on the machine width of the warp knitting machine 1. However, it is at least 70 cm, preferably at least 80 cm.
  • the needle bar 2 may be formed as a hollow profile made of metal, as shown.
  • the shaft 9 can be formed with a larger shaft diameter. This gives it a greater mechanical stability and is designed with a higher resistance to twisting. Accordingly, you can also keep the number of teeing lever 10 small. The smaller the number of strike levers 10, the lower the number of necessary bearings. Each bearing creates a loss due to friction.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
  • Transmission Devices (AREA)
  • Electric Stoves And Ranges (AREA)

Description

Die Erfindung betrifft eine Kettenwirkmaschine mit einer Nadelbarre, die über einen Nadelbarrenantrieb von einer Hauptwelle angesteuert ist, und einer Schieberbarre, die über einen als Schieberbarrendirektantrieb ausgebildeten Schieberbarrenantrieb von der Hauptwelle angesteuert ist.The invention relates to a warp knitting machine with a needle bar, which is driven by a needle bar drive from a main shaft, and a slide bar, which is controlled by a designed as Schieberbarrindirektantrieb slide bar drive from the main shaft.

Eine derartige Kettenwirkmaschine ist aus DE 19 60 871 A1 bekannt. Da die Schieberbarre unabhängig von der Nadelbarre angetrieben wird, kann man die Bewegungen der die Hakenteile der Wirknadeln schließenden oder offen lassenden Zungenteile in beliebigem gleichmäßigem oder ungleichmäßigem Wechsel erfolgen lassen.Such a warp knitting machine is made DE 19 60 871 A1 known. Since the slide bar is driven independently of the needle bar, you can make the movements of the hook parts of the knitting needles closing or leaving open tongue parts in any uniform or non-uniform change.

Die Nadelbarre trägt eine Vielzahl von Wirknadeln, die auch als Arbeitsnadeln bezeichnet werden. Die Wirknadeln weisen einen Kopf auf, der eine Art Haken bildet, mit dem bei einem Maschenbildungsvorgang ein Faden durch eine zuvor gebildete Masche gezogen werden kann. Um zu verhindern, dass der Haken an dieser Masche hängen bleibt, ist für jede Wirknadel ein Schieber vorgesehen, der die Spitze des Hakens abdeckt, wenn der Kopf der Wirknadel durch die zuvor gebildete Masche gezogen wird.The needle bar carries a plurality of knitting needles, which are also referred to as working needles. The knitting needles have a head which forms a kind of hook with which a thread can be pulled through a previously formed stitch in a stitch forming operation. In order to prevent the hook from getting caught on this stitch, a pusher is provided for each knitting needle which covers the tip of the hook when the knitting needle head is pulled through the previously formed stitch.

Die Kettenwirkmaschine weist noch weitere Barren auf, die andere Wirkwerkzeuge tragen, beispielsweise Legenadeln oder dergleichen.The warp knitting machine has even more ingots, which carry other knitting tools, such as guide needles or the like.

Die Nadelbarre und die Schieberbarre werden beide von der Hauptwelle angetrieben. Allerdings ist der Massenschwerpunkt der Schieberbarre weiter von der Achse der Hauptwelle entfernt als der Massenschwerpunkt der Nadelbarre. Weiterhin muss die Schieberbarre bei einem Maschenbildungsvorgang schneller beschleunigt und abgebremst werden als die Nadelbarre. Man hat daher den Schieberbarrenantrieb so ausgestaltet, dass ein von der Hauptwelle angetriebener Stößel einen Hebel antreibt, der drehfest mit einer Welle verbunden ist. Auf dieser Welle sind mehrere andere Hebel drehfest angeordnet, die über Stößel die Schieberbarre antreiben. Dadurch ist es möglich, über die Arbeitsbreite der Kettenwirkmaschine verteilt eine große Anzahl von weiteren Hebeln vorzusehen, so dass die Schieberbarre über eine entsprechend große Vielzahl von Stützstellen angetrieben werden kann.The needle bar and the slide bar are both driven by the main shaft. However, the center of gravity of the slide bar is farther from the axis of the main shaft than the center of mass of the needle bar. Furthermore, the pusher bar must be faster accelerated and decelerated in a stitch forming process than the needle bar. The slide bar drive has therefore been designed in such a way that a ram driven by the main shaft drives a lever which is connected in a rotationally fixed manner to a shaft. On this shaft, several other levers are rotatably mounted, which drive the slide bar via plunger. This makes it possible to provide distributed over the working width of the warp knitting machine a large number of other levers, so that the slide bar can be driven via a correspondingly large number of support points.

Allerdings ist eine derartige Konstruktion relativ kostenaufwändig. Es ergibt sich eine relativ große Masse, die jeweils beschleunigt und abgebremst werden muss. Die Welle ist zusätzlich zu einer Welle vorgesehen, um die die Nadelbarre bei einem Maschenbildungsvorgang verschwenkt wird. Dementsprechend ist auch ein relativ großer Bauraum erforderlich.However, such a construction is relatively expensive. This results in a relatively large mass, which must be accelerated and decelerated in each case. The shaft is provided in addition to a shaft about which the needle bar is pivoted in a stitch forming operation. Accordingly, a relatively large space is required.

US 6 092 398 A zeigt eine weitere Kettenwirkmaschine in Form einer Häkelgalon-Maschine mit einer Wirknadelbarre, die über einen Exzenterantrieb von einer Hauptwelle angetrieben ist. Daneben ist ein getrennter Antrieb für die Schieberbarre vorgesehen. US 6 092 398 A shows another warp knitting machine in the form of a crochet galloon machine with a knitting needle bar, which is driven by an eccentric drive of a main shaft. In addition, a separate drive for the slide bar is provided.

DE 690 15 599 T2 zeigt eine Steuervorrichtung für Schiebernadeln in Häkelgalon-Maschinen. Die Häkelgalon-Maschine weist eine Wirknadelbarre mit einem Wirknadelbarrenantrieb und eine Schiebernadelbarre mit einem getrennt davon ausgebildeten Antrieb auf. DE 690 15 599 T2 shows a control device for sliding needles in crochet galloon machines. The crochet galloon machine has a knitting needle bar with a knitting needle bar drive and a slider needle bar with a drive formed separately therefrom.

Der Erfindung liegt die Aufgabe zugrunde, eine kostengünstig aufgebaute Kettenwirkmaschine anzugeben, die mit hoher Produktivität arbeiten kann.The invention has for its object to provide a low-cost warp knitting machine that can work with high productivity.

Diese Aufgabe wird bei einer Kettenwirkmaschine der eingangs genannten Art dadurch gelöst, dass im Zusammenhang mit der Nadelbarre und der Schieberbarre außer einer Welle, die eine Schwenkachse der Nadelbarre bildet, keine weitere Welle vorhanden ist.This object is achieved in a warp knitting machine of the type mentioned above in that in connection with the needle bar and the slide bar except a shaft which forms a pivot axis of the needle bar, no further wave is present.

Bei dem Schieberbarrendirektantrieb wird die Schieberbarre also nicht mehr über irgendwelche Hebel-Wellen-Hebelkonstruktionen angetrieben, sondern direkt von der Hauptwelle. Dementsprechend lassen sich Bauelemente einsparen, was die Kosten und die zu bewegenden Massen klein hält. Da keine weitere Welle vorhanden ist, kann man Bauraum einsparen. Dieser eingesparte Bauraum kann verwendet werden, um die Welle, die als Schwenkachse für die Nadelbarre dient, zu vergrößern. Der Verzicht auf eine weitere Welle führt auch zu einer Verringerung an Lagerstellen und damit zu einer Vermeidung von Verlustleistung, weil jede Lagerstelle einen gewissen Verlust durch Reibung verursacht.In the Schieberbarrendirektantrieb the slide bar is therefore no longer driven by any lever shaft lever designs, but directly from the main shaft. Accordingly, components can be saved, which keeps the costs and the masses to be moved small. Since there is no further wave, space can be saved. This saved space can be used to increase the shaft, which serves as a pivot axis for the needle bar. The absence of another wave also leads to a reduction in bearings and thus to avoid power loss, because each bearing causes a certain loss due to friction.

Vorzugsweise weist der Schiebebarrendirektantrieb einen Stößel auf, der über ein Gelenk mit einem Schieberbarrenträger verbunden ist, der in einer Linearführung gelagert ist. Die Linearführung kann beispielsweise in einem Nadelbarrenträger angeordnet sein, so dass die Nadelbarre und die Schieberbarre gemeinsam bewegt werden können und der Schieberbarrendirektantrieb nur noch die Bewegung der Schieberbarre relativ zur Nadelbarre steuert.Preferably, the Schiebebarrendirektantrieb on a plunger, which is connected via a hinge with a Schieberbarrenträger, which is mounted in a linear guide. The linear guide can be arranged for example in a Nadelbarrenträger, so that the needle bar and the slide bar can be moved together and the Schieberbarrindirektantrieb only controls the movement of the slide bar relative to the needle bar.

Hierbei ist bevorzugt, dass die Linearführung eine Führungsrichtung aufweist und der Schieberbarrendirektantrieb eine Antriebsrichtung aufweist, die einen stumpfen Winkel mit der Führungsrichtung einschließt. Dieser stumpfe Winkel bleibt über den gesamten Maschenbildungsvorgang erhalten. Er kann sich unter Umständen während eines Maschenbildungsvorgangs etwas ändern, bleibt aber ein stumpfer Winkel.In this case, it is preferred that the linear guide has a guide direction and the slide bar direct drive has a drive direction which encloses an obtuse angle with the guide direction. This obtuse angle is maintained throughout the stitching process. It may change slightly during a stitching process, but remains an obtuse angle.

Vorzugsweise ist die Schieberbarre als Hohlprofil aus Metall ausgebildet. Durch die Verwendung eines Hohlprofils aus Metall lässt sich auf kostengünstige Weise die Masse der Schieberbarre klein halten, so dass der Schieberbarrendirektantrieb auch nur diese kleinere Masse beschleunigen und abbremsen muss. Dies wirkt sich positiv auf die Arbeitsgeschwindigkeit der Kettenwirkmaschine aus, die gesteigert werden kann. Das Risiko von Schwingungsbildungen wird klein gehalten.Preferably, the slide bar is designed as a hollow profile made of metal. By using a hollow profile made of metal, the mass of the slide bar can be kept small in a cost-effective manner, so that the slide bar direct drive must also accelerate and decelerate only this smaller mass. This has a positive effect on the working speed the warp knitting machine, which can be increased. The risk of vibration formation is kept small.

Vorzugsweise weist das Hohlprofil eine spezifische Steifigkeit auf, die um mindestens 40 % größer ist als die spezifische Steifigkeit eines Vollprofils mit gleicher Außenkontur und aus dem gleichen Werkstoff. Die spezifische Steifigkeit ist die auf die Masse des Hohlprofils bezogene Steifigkeit. Die Schieberbarre ist, wie oben bereits erläutert, aufgrund der relativ starken Beschleunigungs- und Abbremsvorgänge mit relativ großen Kräften aufgesetzt, die der Schieberbarre unter ungünstigen Umständen eine so große Verformung aufzwingen, dass sich Probleme mit der Dauerfestigkeit ergeben. Die Verwendung eines Hohlprofils mit ihrer großen spezifischen Steifigkeit wirkt diesem Problem entgegen, weil die hohe spezifische Steifigkeit der erzwungenen Verformung einen ausreichenden Widerstand entgegen setzt.Preferably, the hollow profile has a specific rigidity, which is greater by at least 40% than the specific rigidity of a solid profile with the same outer contour and of the same material. The specific stiffness is the stiffness related to the mass of the hollow profile. The slide bar is, as already explained above, due to the relatively strong acceleration and deceleration operations placed with relatively large forces that force the slide bar under unfavorable circumstances such a large deformation that results in problems with the fatigue strength. The use of a hollow profile with its high specific rigidity counteracts this problem because the high specific stiffness of the forced deformation provides sufficient resistance.

Vorzugsweise weist der Nadelbarrenantrieb einen Abschlaghebel und einen Nadelbarrendirektantrieb auf. Der Abschlaghebel wird verwendet, um eine Bewegung der Nadelbarre quer zur Versatzrichtung, also quer zur Arbeitsbreite der Nadel von der Kettenwirkmaschine, zu bewirken. Der Nadelbarrendirektantrieb ist dann lediglich für die Bewegung der Nadelbarre in die dritte Richtung, also senkrecht zu der Querbewegung und senkrecht zur Versatzrichtung, zuständig. Auch hier kann man dann weitere Hebel und Wellen ersparen.The needle bar drive preferably has a knock-off lever and a needle bar direct drive. The knock-down lever is used to effect movement of the needle bar transversely to the offset direction, ie across the working width of the needle from the warp knitting machine. The Nadelbarrendirektantrieb is then only responsible for the movement of the needle bar in the third direction, ie perpendicular to the transverse movement and perpendicular to the offset direction. Again, you can then spare more levers and waves.

Bevorzugterweise weisen der Schiebebarrendirektantrieb und der Nadelbarrendirektantrieb jeweils einen der Hauptwelle benachbarten Fußpunkt auf und die Fußpunkt sind im selben Umfangsabschnitt der Hauptwelle angeordnet.Preferably, the Schiebebrarrendirektantrieb and the Nadelbarrindirektantrieb each have one of the main shaft adjacent foot point and the foot are arranged in the same peripheral portion of the main shaft.

In einer besonders bevorzugten Ausgestaltung sind die Fußpunkte in einer Richtung parallel zur Achse der Hauptwelle hintereinander angeordnet. Sie befinden sich damit an der gleichen Umfangsposition der Hauptwelle, können allerdings während eines Maschenbildungsvorgangs unterschiedliche radiale Positionen relativ zur Hauptwelle einnehmen, falls erforderlich. Dies spart Bauraum.In a particularly preferred embodiment, the foot points are arranged in a direction parallel to the axis of the main shaft one behind the other. You are thus at the same circumferential position of the main shaft, but can take during a stitch forming operation different radial positions relative to the main shaft, if necessary. This saves space.

Auch ist von Vorteil, wenn die Nadelbarre als Hohlprofil aus Metall ausgebildet ist. Auch bei der Nadelbarre lässt sich dadurch auf kostengünstige Weise Masse einsparen.It is also advantageous if the needle bar is designed as a hollow profile made of metal. Even with the needle bar can be saved in a cost-effective manner mass.

Vorzugsweise weist der Schiebebarrenantrieb in einer Richtung parallel zur Achse der Hauptwelle mehrere Antriebsabschnitte auf, die einen Abstand zueinander von mindestens 70 cm, vorzugsweise mindestens 80 cm aufweisen. Dieser Abstand ist deutlich größer als der bisher verwendete Abstand bei der Verwendung von Hebel-Welle-Hebelantrieben. Dies ist insbesondere dann möglich, wenn die Schieberbarre eine ausreichende spezifische Steifigkeit aufweist.Preferably, the sliding bar drive in a direction parallel to the axis of the main shaft on a plurality of drive sections, which have a distance of at least 70 cm, preferably at least 80 cm. This distance is significantly greater than the distance previously used when using lever-shaft lever drives. This is possible in particular if the slide bar has sufficient specific rigidity.

Die Erfindung wird im Folgenden anhand eines bevorzugten Ausführungsbeispiels in Verbindung mit der Zeichnung beschrieben. Hierin zeigt:

die einzige. Fig.
eine stark schematisierte Darstellung eines Teils einer Kettenwirkmaschine.
The invention will be described below with reference to a preferred embodiment in conjunction with the drawings. Hereby shows:
the only. FIG.
a highly schematic representation of a part of a warp knitting machine.

In der Fig. ist ein Teil einer Kettenwirkmaschine 1 dargestellt mit einer Nadelbarre 2, die eine Vielzahl von Wirknadeln trägt, die senkrecht zur Zeichenebene hintereinander angeordnet sind. Die Wirknadeln sind in der Zeichnung nicht dargestellt. Ferner weist die Kettenwirkmaschine 1 eine Schieberbarre 3 auf, die für jede Wirknadel einen Schieber trägt. Auch die Schieber sind nicht dargestellt.In the figure, a part of a warp knitting machine 1 is shown with a needle bar 2, which carries a plurality of knitting needles, which are arranged perpendicular to the plane one behind the other. The knitting needles are not shown in the drawing. Furthermore, the warp knitting machine 1 has a Slider bar 3, which carries a slider for each knitting needle. The slides are not shown.

Die Schieberbarre 3 ist auf einem Schieberbarrenträger 4 befestigt, der in einer Linearführungsanordnung 5 geführt ist. Die Linearführungsanordnung 5 weist mehrere Linearführungen auf, die senkrecht zur Zeichenebene hintereinander angeordnet sind. Die Linearführungsanordnung 5 weist eine Führungsrichtung 6 auf.The slide bar 3 is mounted on a slide bar carrier 4, which is guided in a linear guide arrangement 5. The linear guide assembly 5 has a plurality of linear guides, which are arranged perpendicular to the plane one behind the other. The linear guide arrangement 5 has a guide direction 6.

Die Linearführungsanordnung 5 ist in einem Nadelbarrenträger 7 angeordnet, der die Nadelbarre 2 trägt. Der Nadelbarrenträger 7 wiederum ist an einem Trägerhebel 8 beweglich gelagert. Der Trägerhebel 8 ist auf einer Welle 9 drehfest befestigt. Die Welle 9 wird über einen Abschlaghebel 10, der mit der Welle 9 ebenfalls drehfest verbunden ist, mit einer Schwenkbewegung angetrieben und zwar über einen Stößel 11, der von einer nicht näher dargestellten Hauptwelle angetrieben ist. Der Antrieb des Stößels 11 durch die Hauptwelle kann über eine Kurbel oder einen Exzenter oder auf andere Weise erfolgen. Der Abschlaghebel 10 und der Trägerhebel 8 können in eine Richtung parallel zur Achse der Welle 9 einen Abstand aufweisen. Es können mehr Trägerhebel 8 als Abschlaghebel 10 vorgesehen sein.The linear guide arrangement 5 is arranged in a needle bar carrier 7 which carries the needle bar 2. The needle bar carrier 7 in turn is movably mounted on a carrier lever 8. The carrier lever 8 is rotatably mounted on a shaft 9. The shaft 9 is driven via a knock-off lever 10, which is also non-rotatably connected to the shaft 9, with a pivoting movement via a plunger 11 which is driven by a main shaft, not shown. The drive of the plunger 11 through the main shaft can be done via a crank or an eccentric or otherwise. The knock-off lever 10 and the carrier lever 8 may have a distance in a direction parallel to the axis of the shaft 9. It can be provided as a strike lever 10 more carrier lever 8.

Eine Bewegung des Nadelbarrenträgers 7 und damit der Nadelbarre 2 gegenüber dem Trägerhebel 8 wird durch einen Nadelbarrendirektantrieb bewirkt, der einen Nadelbarrenstößel 12 aufweist, der gelenkig mit dem Nadelbarrenträger 7 verbunden ist. Der Nadelbarrenstößel 12 weist einen Fußpunkt 13 auf, über den die Hauptwelle auf den Nadelbarrenstößel 12 wirkt. Der Fußpunkt, der beispielsweise auch noch mit einer Rolle oder einer anderen geeigneten Lagerstelle versehen werden kann, kann beispielsweise an einem Exzenter oder einer Nockenscheibe an der Hauptwelle anliegen.A movement of the needle bar carrier 7 and thus the needle bar 2 with respect to the carrier lever 8 is effected by a Nadelbarrindirektantrieb having a needle bar plunger 12 which is pivotally connected to the needle bar carrier 7. The needle bar plunger 12 has a foot point 13, via which the main shaft acts on the needle bar plunger 12. The base, which can also be provided, for example, with a roller or other suitable bearing point, for example, can rest against an eccentric or a cam on the main shaft.

Eine Bewegung der Schieberbarre 3 relativ zur Nadelbarre 2 wird durch einen Schieberbarrenantrieb bewirkt, der als Schieberbarrendirektantrieb ausgebildet ist. Der Schieberbarrendirektantrieb weist einen Schieberbarrenstößel 14 auf, der einen Fußpunkt 15 aufweist. Der Fußpunkt 15 ist mit einer Rolle 16 versehen, die an der Hauptwelle anliegt, wobei die Hauptwelle wiederum einen Exzenter oder eine Nockenstruktur aufweisen kann. Der Fußpunkt 13 des Nadelbarrenstößels 12 und der Fußpunkt 15 des Schieberbarrenstößels 14 sind parallel zur Achse der Welle 9 versetzt. Sie liegen aber im gleichen Umfangsabschnitt der Hauptwelle und vorzugsweise in eine Richtung parallel zur Achse der Hauptwelle direkt hintereinander, also an der gleichen Winkelposition bezogen auf die Hauptwelle. In radialer Richtung zur Hauptwelle können sie, falls erforderlich, einen Versatz aufweisen. In der Zeichnung ist die vorteilhafte Ausgestaltung dargestellt.A movement of the slide bar 3 relative to the needle bar 2 is effected by a slide bar drive, which is designed as Schieberbarrendirektantrieb. The Schieberbarrindirektantrieb has a slide bar ram 14 having a base point 15. The foot 15 is provided with a roller 16 which bears against the main shaft, wherein the main shaft may in turn comprise an eccentric or a cam structure. The base 13 of the needle bar plunger 12 and the base 15 of the slide bar plunger 14 are offset parallel to the axis of the shaft 9. But they are in the same circumferential portion of the main shaft and preferably in a direction parallel to the axis of the main shaft directly behind one another, ie at the same angular position relative to the main shaft. In the radial direction to the main shaft they can, if necessary, have an offset. In the drawing, the advantageous embodiment is shown.

Der Schieberbarrenstößel 14 weist eine Längsachse 17 auf. Der Schieberbarrenstößel 14 wird in eine Richtung parallel zu dieser Längsachse 17 bewegt. Der Schieberbarrenstößel 14 ist am vom Fußpunkt 15 abgewandten Ende über ein Gelenk 18 mit dem Schieberbarrenträger 4 verbunden. Die Längsachse 17 stimmt der Antriebsrichtung des Schieberbarrenstößels 14 überein. Diese Antriebsrichtung, d.h. die Längsachse 17, schließt mit der Führungsrichtung 6 immer einen stumpfen Winkel ein. Dadurch wird zwar ein kleiner Teil der Antriebsleistung nicht auf die Schieberbarre 3 übertragen. Man ist aber wesentlich flexibler in der Gestaltung.The slide bar plunger 14 has a longitudinal axis 17. The slider bar plunger 14 is moved in a direction parallel to this longitudinal axis 17. The slide bar tappet 14 is connected at the end remote from the base 15 via a joint 18 with the slide bar carrier 4. The longitudinal axis 17 corresponds to the drive direction of the slide bar plunger 14. This drive direction, i. the longitudinal axis 17, always encloses an obtuse angle with the guide direction 6. As a result, although a small part of the drive power is not transmitted to the slide bar 3. But one is much more flexible in the design.

Die Schieberbarre 3 ist aus einem Metall gebildet und als Hohlprofil ausgebildet. Als Metall kommt beispielsweise Magnesium in Betracht. Das Hohlprofil der Schieberbarre 3 weist eine spezifische Steifigkeit, d.h. eine Steifigkeit pro Masse, auf, die um mindestens 40 % größer ist als die spezifische Steifigkeit eines Vollprofils mit gleicher Außenkontur und aus dem gleichen Werkstoff. Dadurch wird die Masse der Schieberbarre klein gehalten und gleichzeitig die dynamische Steifigkeit erhöht. Es ergibt sich ein erhöhter Widerstand gegen eine Verformung, so dass die Anzahl der "Stützstellen", d.h. die Anzahl der Stellen, an denen man einen Schieberbarrenstößel 14 verwenden muss, um die Schieberbarre 3 anzutreiben, klein gehalten werden kann. Gegenüber bekannten Maschinen kann man den Abstand zwischen Schieberbarrenstößeln 14 senkrecht zur Zeichenebene, also in Richtung der Maschinenbreite, verringern. Während man beispielsweise bislang bei einer Maschinenbreite von 330,2 cm (130") sieben Stützstellen benötigte, benötigt man mit dem Schieberbarrendirektantrieb nur noch 5 Stützstellen. Damit lässt sich der Abstand zwischen benachbarten Stützstellen von 55 cm auf 82,5 cm vergrößern. Dieser Abstand kann in Abhängigkeit von der Maschinenbreite der Kettenwirkmaschine 1 etwas variieren. Er beträgt aber mindestens 70 cm, vorzugsweise mindestens 80 cm.The slide bar 3 is formed of a metal and formed as a hollow profile. For example, magnesium is considered as metal. The hollow profile of the slide bar 3 has a specific rigidity, ie a stiffness per mass, which is at least 40% greater than the specific rigidity of a solid profile with the same outer contour and of the same material. As a result, the mass of the slide bar becomes small while increasing dynamic stiffness. The result is an increased resistance to deformation, so that the number of "support points", ie the number of points where you must use a slide bar plunger 14 to drive the slide bar 3, can be kept small. Compared with known machines, one can reduce the distance between slide bar tappets 14 perpendicular to the drawing plane, ie in the direction of the machine width. For example, while a machine width of 330.2 cm (130 ") previously required seven interpolation points, the slider-bar direct drive now only requires 5 interpolation points to increase the distance between adjacent interpolation points from 55 cm to 82.5 cm may vary somewhat depending on the machine width of the warp knitting machine 1. However, it is at least 70 cm, preferably at least 80 cm.

Auch die Nadelbarre 2 kann als Hohlprofil aus Metall ausgebildet sein, wie dargestellt.The needle bar 2 may be formed as a hollow profile made of metal, as shown.

Da neben der Welle 9 für den Abschlaghebel 10 und den Trägerhebel 8 keine weiteren Wellen mehr vorhanden sind, kann die Welle 9 mit einem größeren Wellendurchmesser ausgebildet werden. Damit erhält sie eine größere mechanische Stabilität und ist mit einem höheren Widerstand gegen eine Verwindung ausgebildet. Dementsprechend kann man auch die Anzahl der Abschlaghebel 10 klein halten. Je kleiner die Anzahl der Abschlaghebel 10 ist, desto geringer ist auch die Anzahl der notwendigen Lagerstellen. Jede Lagerstelle erzeugt einen Verlust durch Reibung.Since no further waves are present in addition to the shaft 9 for the knock lever 10 and the carrier lever 8, the shaft 9 can be formed with a larger shaft diameter. This gives it a greater mechanical stability and is designed with a higher resistance to twisting. Accordingly, you can also keep the number of teeing lever 10 small. The smaller the number of strike levers 10, the lower the number of necessary bearings. Each bearing creates a loss due to friction.

Claims (10)

  1. Warp-knitting machine (1) having a needle bar (2) that is actuated by a main shaft by way of a needle-bar drive (8-13), and a slide bar (3) that is actuated by the main shaft by way of a slide-bar drive, configured as a slide-bar direct drive (14, 15), characterized in that there is no further shaft in the context of the needle bar (2) and of the slide bar (3), other than one shaft (9) that forms a pivoting axis of the needle bar (2).
  2. Warp-knitting machine (1) according to Claim 1, characterized in that the slide-bar direct drive (14, 15) has a tappet (14) that by way of an articulation (18) is connected to a slide-bar support (4) which is mounted in a linear-guide assembly (5).
  3. Warp-knitting machine (1) according to Claim 2, characterized in that the linear-guide assembly (5) has a guiding direction (6), and the slide-bar direct drive (14, 15) has a driving direction (17) that in relation to the guiding direction (6) encloses an obtuse angle.
  4. Warp-knitting machine (1) according to one of Claims 1 to 3, characterized in that the slide bar (3) is configured as a hollow profile from metal.
  5. Warp-knitting machine (1) according to Claim 4, characterized in that the hollow profile has a specific rigidity that is higher by at least 40% than the specific rigidity of a solid profile of identical external contour and from the identical material.
  6. Warp-knitting machine (1) according to one of Claims 1 to 5, characterized in that the needle-bar drive (8-13) has a knock-over lever (10) and a needle-bar direct drive (12, 13).
  7. Warp-knitting machine (1) according to Claim 6, characterized in that the slide-bar direct drive (14, 15) and the needle-bar direct drive (12, 13) each have one foot point (13, 15) that is adjacent to the main shaft, and the foot points (13, 14) are disposed in the same circumferential portion of the main shaft.
  8. Warp-knitting machine (1) according to Claim 7, characterized in that the foot points (13, 15) are sequentially disposed in a direction that is parallel with the axis of the main shaft.
  9. Warp-knitting machine (1) according to one of Claims 1 to 8, characterized in that the needle bar (2) is configured as a hollow profile from metal.
  10. Warp-knitting machine (1) according to one of Claims 1 to 9, characterized in that the slide-bar drive (14, 15) in a direction that is parallel with the axis of the main shaft has a plurality of drive portions which are mutually spaced apart by at least 70 cm, preferably at least 80 cm.
EP16159777.8A 2016-03-11 2016-03-11 Warp knitting machine Active EP3216903B1 (en)

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EP16159777.8A EP3216903B1 (en) 2016-03-11 2016-03-11 Warp knitting machine
CN201610379684.XA CN107177930B (en) 2016-03-11 2016-06-01 Tricot machine

Applications Claiming Priority (1)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3757267A2 (en) 2020-11-06 2020-12-30 KARL MAYER STOLL R&D GmbH Warp knitting tool bar for a warp knitting machine
EP4290001A1 (en) * 2022-06-10 2023-12-13 KARL MAYER STOLL R&D GmbH Warp knitting loom

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DE4405793A1 (en) * 1994-02-23 1995-08-24 Roland Wunner Drive for Raschel warp knitting machine with compound needles

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DD227467A1 (en) * 1984-10-23 1985-09-18 Textima Veb K RAIL RAIL FOR FASTENING THE COUNTER RAIL TO A CUTTING MACHINE
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JP3856068B2 (en) * 1998-11-16 2006-12-13 Ｙｋｋ株式会社 Actuation mechanism of compound knitting needles in narrow crochet knitting machine
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CN105133172B (en) * 2015-08-26 2017-03-22 江苏润源控股集团有限公司 Knitting mechanism of two-needle bar warp knitting machine with double jacquard effects
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DE4405793A1 (en) * 1994-02-23 1995-08-24 Roland Wunner Drive for Raschel warp knitting machine with compound needles

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3757267A2 (en) 2020-11-06 2020-12-30 KARL MAYER STOLL R&D GmbH Warp knitting tool bar for a warp knitting machine
EP3757267A3 (en) * 2020-11-06 2021-04-21 KARL MAYER STOLL R&D GmbH Warp knitting tool bar for a warp knitting machine
EP4290001A1 (en) * 2022-06-10 2023-12-13 KARL MAYER STOLL R&D GmbH Warp knitting loom

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EP3216903A1 (en) 2017-09-13
CN107177930B (en) 2019-05-14

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