EP0583631A1 - Warp knitting machine with Jacquard-control - Google Patents

Warp knitting machine with Jacquard-control Download PDF

Info

Publication number
EP0583631A1
EP0583631A1 EP93111569A EP93111569A EP0583631A1 EP 0583631 A1 EP0583631 A1 EP 0583631A1 EP 93111569 A EP93111569 A EP 93111569A EP 93111569 A EP93111569 A EP 93111569A EP 0583631 A1 EP0583631 A1 EP 0583631A1
Authority
EP
European Patent Office
Prior art keywords
laying
knitting machine
warp knitting
machine according
needle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP93111569A
Other languages
German (de)
French (fr)
Other versions
EP0583631B1 (en
Inventor
Kresimir Mista
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Karl Mayer Textilmaschinenfabrik GmbH
Original Assignee
Karl Mayer Textilmaschinenfabrik GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Karl Mayer Textilmaschinenfabrik GmbH filed Critical Karl Mayer Textilmaschinenfabrik GmbH
Publication of EP0583631A1 publication Critical patent/EP0583631A1/en
Application granted granted Critical
Publication of EP0583631B1 publication Critical patent/EP0583631B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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
    • D04B27/02—Warp-thread guides
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C3/00—Jacquards
    • D03C3/20—Electrically-operated jacquards
    • 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
    • D04B27/32—Thread guide bar assemblies with independently-movable thread guides controlled by Jacquard mechanisms

Definitions

  • the invention relates to a warp knitting machine with jacquard control, in which the laying needles of at least one laying bar can be individually displaced by at least one knitting needle pitch on the basis of electrical control commands.
  • Such a warp knitting machine is known from DE-OS 40 28 390.
  • spring-loaded pushing elements are vertically adjusted in the bar by means of a harness cord, whereby the associated laying needle is displaced from a rest position into a working position.
  • the upper end of the harness cord is connected to an actuating body which can be carried by a lifting plate which is moved up and down in each working cycle.
  • the actuator body carries a hook which engages with a counter hook on the armature of an electromagnet and holds the actuator body in the raised state when the electromagnet is energized but remains out of engagement with the hook and allows the actuator body to drop when the electromagnet is not energized.
  • the electromagnets and the arrangement of the harness cords require a considerable amount of space and weight.
  • the invention has for its object to provide a warp knitting machine of a substantially simpler structure jacquard control in a warp knitting machine.
  • piezoelectric transducers which are arranged on the laying bar and which shift the laying needles by applying a control voltage.
  • Piezoelectric transducers of this type are relatively small components which, including the associated control lines, can be accommodated in the jacquard laying bar with little effort and make it possible to dispense with other thrust elements, the transmission by harness cords and an electromagnetic or other jacquard device above the warp knitting machine.
  • the acquisition and maintenance costs are therefore significantly reduced.
  • piezoelectric transducers operate at extremely low levels Power dissipation. The operating costs are therefore also low.
  • the mass to be moved is only a fraction of the masses to be moved in the known cases. Therefore, much smaller forces than before are sufficient for the adjustment. To generate them, it is sufficient to control the piezoelectric transducers with low voltage, that is to say a voltage value below 100 V.
  • the transducers can therefore be arranged extremely close to one another, as is necessary because of the small spacing of the laying needles, without insulation problems occurring.
  • the changeover times are very short, so that even high-speed warp knitting machines can be equipped with this jacquard control.
  • the piezoelectric transducers are particularly advantageously designed as bending transducers. Such bending transducers are customary in the trade and lead to significantly larger actuating movements than with piezoelectric transducers of a different type.
  • a particularly space-saving construction results if the laying needles are attached to the laying bar with the interposition of the bending transducers.
  • a bending transducer is assigned to each laying needle, one end of which is attached to the laying bar and the other end is rigidly connected to the laying needle. In this way, the free end of the laying needle passes through a path that is a multiple of the deflection of the bending transducer. It is possible to work with comparatively small bending transducers and still achieve the travel corresponding to the knitting needle division.
  • each laying needle is assigned at least two bending transducers running parallel to one another, one end of which is attached to the laying bar and the other ends of which are connected to the laying needle. This results in a kind of parallelogram guidance of the laying needle, which ensures that the laying needle is always parallel to the knitting needles, which reduces the risk of needle collisions.
  • the bending transducers each have a plate-shaped carrier and at least one active layer of piezoelectric material applied to it, one end region of the plate being firmly clamped in a holding device of the laying bar and the other end region carrying the laying needle.
  • the desired deflection and force are obtained.
  • the expansion in the direction of the needle contour is very small. There is no difficulty in adapting the bending transducers to a laying needle pitch of less than 2 mm, as is required with a knitting needle arrangement of 28 needles / inch.
  • the support and the laying needle are formed in one piece.
  • the laying needle lies flat on the other end region of the carrier and the like by gluing, soldering or the like. connected is.
  • the material of the carrier can be selected independently of that of the laying needle and can be adapted to the function of the bending transducer.
  • the carrier has material breakthroughs between the active layer and the laying needle to form bending joints. These bending joints prevent the build-up of internal stresses in the parallelogram control of the laying needle, which limit the deflection.
  • the width of the carrier and the active layer is a multiple of the width of the laying needle. In this way, the force required to deflect can be generated.
  • the laying needle is arranged between two adjacent stops, against which the laying needle lies in its two working positions. In this way the two working positions are defined.
  • the lay-up needle contact one stop with its own pretension when the bending transducer is not energized and to the other stop when the bending transducer is energized under its bending force.
  • the laying needles are held securely in their working position by the system under excess force.
  • At least one of the stops carries a permanent magnet which magnetically attracts the laying needle.
  • the permanent magnet also prevents vibrations when hitting the stop.
  • the bending transducers each have a plate-shaped support and at least one active layer of piezoelectric material applied to it, that the supports are electrically conductive and are held at ground potential via their attachment to the bar, and that the active layer is provided on the side facing away from the carrier with an electrode layer to which a control line is connected.
  • a single control line per bending transducer is therefore sufficient to control it correctly.
  • control lines leading to the bending transducers run above a holding device for the carriers of the bending transducers. Above the holding device there is sufficient space for the lines, which can be routed there as a wiring harness to one or both ends of the jacquard laying bar.
  • the holding device only extend over a part of the width of the carrier ends and that the control lines are passed between the exposed regions of the carrier ends. Sections of the holding device serve as spacers, which allow free access of the control lines to the associated connections.
  • the piezoelectric transducers can be operated with a voltage of approximately 25 to 30 V. Such a voltage requires little or no insulation at all. It can also be obtained with a simple DC-DC converter from the usual voltages that occur in TTL circuits or computer systems.
  • the jacquard controller has a pattern memory and a computer which emits the control signals assigned to the individual piezoelectric transducers for each working cycle of the warp knitting machine, and that DC-DC converters are provided which convert the control signals into the control voltage. To this This results in a very simple computer control of the jacquard device.
  • a warp knitting machine 1 which has a row of knitting needles 2 and three rows of laying needles 3, 4 and 5.
  • the laying needles each sit on a laying bar 6, 7 and 8, which can be moved back and forth in the usual way by pattern devices in the direction of their longitudinal axis, that is to say perpendicular to the plane of the drawing, in order to produce the desired considerations and considerations.
  • the laying needles 3 have the same pitch as the knitting needles 2.
  • the laying needles 4 and 5 each have a double pitch and are spaced from one another. In addition, they can be shifted by one knitting needle pitch by means of a jacquard control.
  • the jacquard control has piezoelectric transducers 9 and 10 for each of the laying needles 4 and 5, which can be controlled via electrical control lines 11 and 12.
  • the main shaft 13 of the warp knitting machine is provided with a rotation angle meter 14, which outputs its rotation angle signals to a computer 15.
  • a pattern memory 16 is assigned to this.
  • the computer emits control signals assigned to the individual piezoelectric transducers 9, 10 for each working cycle of the warp knitting machine. These are passed on with a voltage of approximately 5 V to DC converters 17, which are connected at their outputs 18 to one of the control lines 11, 12 each.
  • the associated output When excited by the computer 15, the associated output outputs a control voltage in the low-voltage range, preferably from approximately 25 to 30 V.
  • the voltage is measured between the control line and a ground connection 19, which is connected to the ground connection of the DC converter 17 and the laying bar 7 or 8.
  • the bending transducers are designed so that they cause the desired deflection of the laying needle 5 at this control voltage.
  • Each bending transducer has a carrier 20 in the form of a rectangular plate which is covered on one side with an active layer 21 made of piezoelectric material. The free side of this active layer is provided with an electrode 22, on which there is a connection 23 for one of the control lines 12.
  • One end 24 of the carrier 20 is arranged in slots 25 of a bar of the laying bar 8 which serves as a holding device 26 and which is electrically conductive and therefore supply the carrier with ground potential.
  • the ends 24 can be in the slots 25 by gluing or by other known means Type, for example, be set by means of a locking wire.
  • the holding device 26 has a smaller width than the carrier ends 24, so that a free space 27 remains, via which the end sections 28 of the control lines 12 are led to the connection 23.
  • a flat area 30 of the laying needle 5 is glued or soldered onto the other end area 29.
  • Each laying needle 5 is arranged between two stops 31, which each define the working position of the laying needle 5 resting on them.
  • a permanent magnet 32 is arranged in each stop 31, which reduces vibrations when the laying needle hits the stop.
  • the piezoelectric material wants to deform. However, this is only possible on the free side because the carrier 20 does not permit expansion or contraction. Depending on the direction of the control voltage applied, the free end of the bending transducer is deflected in one direction or the other. As shown in FIG. 3, such a deflection took place with three laying needles 5 '.
  • FIG. 4 shows another bending transducer 110, in which the laying needle 105 and the carrier 120 are formed in one piece.
  • the layer 121 made of piezoelectric material is applied over an active section. It is provided with an electrode 122 and an associated connection 123.
  • two bending transducers 210 and 210 ' are provided, the supports 220, 220' of which are clamped parallel to one another. They are attached on both sides of the laying needle 205 and are deflected in the same direction when a control voltage is applied. As a result, the laying needle 205 is moved parallel to itself.
  • a bending joint 233 which is formed by openings 234 in the carrier 220, is provided between the bending transducer and the laying needle. This flexible joint helps to reduce the build-up of internal stresses during the deflection.
  • the material used for the active layer is mainly piezoceramic, in particular synthetically produced, inorganic, polycrystalline and non-metallic materials, mostly made of modified lead zirconate titanates. They get their piezoelectric effect through polarization with high field strengths above the Curie temperature.
  • the active layer can be produced over a large area, then cut and then glued onto the previously cut carrier.
  • laminated bodies with more than one active piezoceramic layer can also be used, for example a passive layer between two active layers or a plurality of active layers in which at least one is acted upon in the opposite direction by this control voltage than the other active layers.
  • Piezoelectric bending transducers have already been used for special applications, for example for controlling a fiber-optic relay (dissertation Eicher "Optimizing piezoelectric bending transducers using the example of a fiber-optic relay", Berlin 1989).

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)

Abstract

Eine Kettenwirkmaschine mit Jacquard-Steuerung besitzt an der Legebarre (8) angeordnete piezoelektrische Wandler (10), die die zugehörigen Legenadeln (5) durch Anlegen einer Steuerspannung verlagern. Insbesondere sind die piezoelektrischen Wandler als Biegewandler (10) ausgebildet. Diese weisen einen plattenförmigen Träger (20) und mindestens eine auf ihm aufgebrachte aktive Schicht (21) aus piezoelektrischem Material auf. Der eine Endbereich (24) der Platte (20) kann in einer Haltevorrichtung der Legebarre (8) fest eingespannt sein und der andere Endbereich (29) die Legenadeln (5) tragen. Es ergibt sich eine sehr einfach aufgebaute Jacquard-Vorrichtung. <IMAGE>A warp knitting machine with jacquard control has piezoelectric transducers (10) arranged on the laying bar (8), which shift the associated laying needles (5) by applying a control voltage. In particular, the piezoelectric transducers are designed as bending transducers (10). These have a plate-shaped carrier (20) and at least one active layer (21) made of piezoelectric material applied to it. One end region (24) of the plate (20) can be firmly clamped in a holding device of the laying bar (8) and the other end region (29) can carry the laying needles (5). The result is a very simply constructed jacquard device. <IMAGE>

Description

Die Erfindung bezieht sich auf eine Kettenwirkmaschine mit Jacquard-Steuerung, bei der die Legenadeln wenigstens einer Legebarre aufgrund elektrischer Steuerbefehle individuell um wenigstens eine Wirknadelteilung verlagerbar sind.The invention relates to a warp knitting machine with jacquard control, in which the laying needles of at least one laying bar can be individually displaced by at least one knitting needle pitch on the basis of electrical control commands.

Eine solche Kettenwirkmaschine ist aus DE-OS 40 28 390 bekannt. Hier werden federbelastete Drängelemente in der Legebarre mittels einer Harnischschnur vertikal verstellt, wodurch die zugehörige Legenadel aus einer Ruhestellung in eine Arbeitsstellung verdrängt wird. Das obere Ende der Harnischschnur ist mit einem Stellkörper verbunden, der durch eine in jedem Arbeitszyklus auf und ab bewegte Hubplatte mitnehmbar ist. Der Stellkörper trägt einen Haken, der mit einem Gegenhaken am Anker eines Elektromagneten in Eingriff kommt und den Stellkörper in angehobenem Zustand festhält, wenn der Elektromagnet erregt ist, aber außer Eingriff mit dem Haken bleibt und den Stellkörper absinken läßt, wenn der Elektromagnet nicht erregt ist. Die Elektromagnete und die Anordnung der Harnischschnüre erfordert einen erheblichen Platz- und Gewichtsaufwand.Such a warp knitting machine is known from DE-OS 40 28 390. Here, spring-loaded pushing elements are vertically adjusted in the bar by means of a harness cord, whereby the associated laying needle is displaced from a rest position into a working position. The upper end of the harness cord is connected to an actuating body which can be carried by a lifting plate which is moved up and down in each working cycle. The actuator body carries a hook which engages with a counter hook on the armature of an electromagnet and holds the actuator body in the raised state when the electromagnet is energized but remains out of engagement with the hook and allows the actuator body to drop when the electromagnet is not energized. The electromagnets and the arrangement of the harness cords require a considerable amount of space and weight.

Aus DE-PS 33 21 733 ist es für eine solche mit Harnischschnüren arbeitende Jacquard-Steuerung bekannt, die Legenadeln jeweils zwischen zwei barrenfesten Anschlägen anzuordnen. Die Legenadeln sind mit nach entgegengesetzten Richtungen weisenden Erhebungen versehen, an denen laschenförmige Drängelemente eines mit der Harnischschnur verbundenen Schiebers wechselweise angreifen können. Hierdurch wird die Legenadel entweder an den einen oder an den anderen barrenfesten Anschlag gedrückt, wodurch die beiden Arbeitsstellungen genau definiert sind.From DE-PS 33 21 733 it is known for such a jacquard control working with harness cords to arrange the laying needles between two parallel bars. The laying needles are provided with elevations pointing in opposite directions, on which tab-shaped thrust elements of a slider connected to the harness cord can alternately engage. As a result, the laying needle is pressed either to one or the other bar-fixed stop, whereby the two working positions are precisely defined.

Der Erfindung liegt die Aufgabe zugrunde, bei einer Kettenwirkmaschine der eingangs beschriebenen Art eine wesentliche einfacher aufgebaute Jacquard-Steuerung zu schaffen.The invention has for its object to provide a warp knitting machine of a substantially simpler structure jacquard control in a warp knitting machine.

Diese Aufgabe wird erfindungsgemäß gelöst durch piezoelektrische Wandler, die an der Legebarre angeordnet sind und die Legenadeln durch Anlegen einer Steuerspannung verlagern.This object is achieved according to the invention by piezoelectric transducers which are arranged on the laying bar and which shift the laying needles by applying a control voltage.

Derartige piezoelektrische Wandler sind verhältnismäßig kleine Bauelemente, die einschließlich der zugehörigen Steuerleitungen mit geringem Aufwand in der Jacquard-Legebarre untergebracht werden können und es ermöglichen, auf andere Drängelemente, die Übertragung durch Harnischschnüre und eine elektromagnetische oder sonstige Jacquard-Einrichtung oberhalb der Kettenwirkmaschine zu verzichten. Die Anschaffungskosten und die Wartungskosten werden daher erheblich reduziert. Außerdem arbeiten piezoelektrische Wandler mit äußerst geringer Verlustleistung. Auch die Betriebskosten sind daher gering.Piezoelectric transducers of this type are relatively small components which, including the associated control lines, can be accommodated in the jacquard laying bar with little effort and make it possible to dispense with other thrust elements, the transmission by harness cords and an electromagnetic or other jacquard device above the warp knitting machine. The acquisition and maintenance costs are therefore significantly reduced. In addition, piezoelectric transducers operate at extremely low levels Power dissipation. The operating costs are therefore also low.

Die zu bewegende Masse beträgt nur einen Bruchteil der in den bekannten Fällen zu bewegenden Massen. Daher genügen für die Verstellung auch wesentlich kleinere Kräfte als früher. Zu deren Erzeugung reicht es aus, die piezoelektrischen Wandler mit Niederspannung, also einem Spannungswert unter 100 V anzusteuern. Die Wandler können daher außerordentlich dicht nebeneinander angeordnet werden, wie es wegen des geringen Legenadel-Abstandes erforderlich ist, ohne daß Isolationsprobleme auftreten. Darüber hinaus sind die Umschaltzeiten sehr kurz, so daß auch schnellaufende Kettenwirkmaschinen mit dieser Jacquard-Steuerung ausgestattet werden können.The mass to be moved is only a fraction of the masses to be moved in the known cases. Therefore, much smaller forces than before are sufficient for the adjustment. To generate them, it is sufficient to control the piezoelectric transducers with low voltage, that is to say a voltage value below 100 V. The transducers can therefore be arranged extremely close to one another, as is necessary because of the small spacing of the laying needles, without insulation problems occurring. In addition, the changeover times are very short, so that even high-speed warp knitting machines can be equipped with this jacquard control.

Mit besonderem Vorteil sind die piezoelektrischen Wandler als Biegewandler ausgebildet. Solche Biegewandler sind handelsüblich und führen zu wesentlich größeren Stellbewegungen als bei piezoelektrischen Wandlern anderer Art.The piezoelectric transducers are particularly advantageously designed as bending transducers. Such bending transducers are customary in the trade and lead to significantly larger actuating movements than with piezoelectric transducers of a different type.

Ein besonders raumsparender Aufbau ergibt sich, wenn die Legenadeln unter Zwischenschaltung der Biegewandler an der Legebarre befestigt sind.A particularly space-saving construction results if the laying needles are attached to the laying bar with the interposition of the bending transducers.

Günstig ist es hierbei, daß jeder Legenadel ein Biegewandler zugeordnet ist, dessen eines Ende an der Legebarre befestigt und dessen anderes Ende starr mit der Legenadel verbunden ist. Auf diese Weise durchläuft das freie Ende der Legenadel einen Weg, der ein Vielfaches der Auslenkung des Biegewandlers ist. Es kann mit vergleichsweise kleinen Biegewandlern gearbeitet und trotzdem der der Wirknadelteilung entsprechende Stellweg erreicht werden.It is favorable here that a bending transducer is assigned to each laying needle, one end of which is attached to the laying bar and the other end is rigidly connected to the laying needle. In this way, the free end of the laying needle passes through a path that is a multiple of the deflection of the bending transducer. It is possible to work with comparatively small bending transducers and still achieve the travel corresponding to the knitting needle division.

Bei einer anderen Ausführungsform ist dafür gesorgt, daß jeder Legenadel mindestens zwei parallel nebeneinander verlaufende Biegewandler zugeordnet sind, deren eine Enden an der Legebarre befestigt und deren andere Enden mit der Legenadel verbunden sind. Hierdurch ergibt sich eine Art Parallelogrammführung der Legenadel, die dafür sorgt, daß die Legenadel immer parallel zu den Wirknadeln steht, was die Gefahr von Nadelkollisionen herabsetzt.In another embodiment, it is ensured that each laying needle is assigned at least two bending transducers running parallel to one another, one end of which is attached to the laying bar and the other ends of which are connected to the laying needle. This results in a kind of parallelogram guidance of the laying needle, which ensures that the laying needle is always parallel to the knitting needles, which reduces the risk of needle collisions.

Im einfachsten Fall weisen die Biegewandler je einen plattenförmigen Träger und mindestens eine auf ihm aufgebrachte aktive Schicht aus piezoelektrischem Material auf, wobei der eine Endbereich der Platte in einer Haltevorrichtung der Legebarre fest eingespannt ist und der andere Endbereich die Legenadel trägt. Durch Wahl der Länge und Breite der aktiven Schicht erhält man die gewünschte Auslenkung und Kraft. Hierbei ist die Ausdehnung in Richtung der Nadelfontur sehr gering. Es bereitet keine Schwierigkeiten, die Biegewandler einer Legenadel-Teilung von weniger als 2 mm anzupassen, wie sie bei einer Wirknadelanordnung von 28 Nadeln/Zoll erforderlich ist.In the simplest case, the bending transducers each have a plate-shaped carrier and at least one active layer of piezoelectric material applied to it, one end region of the plate being firmly clamped in a holding device of the laying bar and the other end region carrying the laying needle. By selecting the length and width of the active layer, the desired deflection and force are obtained. The expansion in the direction of the needle contour is very small. There is no difficulty in adapting the bending transducers to a laying needle pitch of less than 2 mm, as is required with a knitting needle arrangement of 28 needles / inch.

Bei einer besonders einfachen Ausführungsform sind Träger und Legenadel einstückig ausgebildet.In a particularly simple embodiment, the support and the laying needle are formed in one piece.

Eine Alternative besteht darin, daß die Legenadel flächig auf dem anderen Endbereich des Trägers aufliegt und mit diesem durch Kleben, Löten o.dgl. verbunden ist. Hierbei kann das Material des Trägers unabhängig von demjenigen der Legenadel gewählt und der Funktion des Biegewandlers angepaßt werden.An alternative is that the laying needle lies flat on the other end region of the carrier and the like by gluing, soldering or the like. connected is. The material of the carrier can be selected independently of that of the laying needle and can be adapted to the function of the bending transducer.

Von Vorteil ist es ferner, daß der Träger zwischen aktiver Schicht und Legenadel zur Bildung von Biegegelenken Materialdurchbrüche aufweist. Diese Biegegelenke verhindern bei der Parallelogrammansteuerung der Legenadel den Aufbau von inneren Spannungen, welche die Auslenkung beschränken.It is also advantageous that the carrier has material breakthroughs between the active layer and the laying needle to form bending joints. These bending joints prevent the build-up of internal stresses in the parallelogram control of the laying needle, which limit the deflection.

Bei einer bevorzugten Ausführungsform beträgt die Breite des Trägers und der aktiven Schicht ein Mehrfaches der Breite der Legenadel. Auf diese Weise läßt sich die erforderliche Kraft bei der Auslenkung erzeugen.In a preferred embodiment, the width of the carrier and the active layer is a multiple of the width of the laying needle. In this way, the force required to deflect can be generated.

Günstig ist es auch, daß die Legenadel jeweils zwischen zwei benachbarten Anschlägen angeordnet ist, an welche sich die Legenadel in ihren beiden Arbeitsstellungen anlegt. Auf diese Weise sind die beiden Arbeitsstellungen definiert.It is also favorable that the laying needle is arranged between two adjacent stops, against which the laying needle lies in its two working positions. In this way the two working positions are defined.

Hierbei empfiehlt es sich, daß sich die Legenadel bei nicht-erregtem Biegewandler unter eigner Vorspannung an den einen Anschlag und bei erregtem Biegewandler unter dessen Biegekraft an den anderen Anschlag anlegt. Durch die Anlage unter Kraftüberschuß werden die Legenadeln sicher in ihrer Arbeitsstellung gehalten.It is recommended that the lay-up needle contact one stop with its own pretension when the bending transducer is not energized and to the other stop when the bending transducer is energized under its bending force. The laying needles are held securely in their working position by the system under excess force.

Diesem Ziel dient es auch, daß wenigstens einer der Anschläge einen Permanentmagneten trägt, der die Legenadel magnetisch anzieht. Außerdem verhindert der Permanentmagnet Schwingungen beim Auftreffen auf den Anschlag.It also serves this purpose that at least one of the stops carries a permanent magnet which magnetically attracts the laying needle. The permanent magnet also prevents vibrations when hitting the stop.

Für den elektrischen Anschluß empfiehlt es sich, daß die Biegewandler je einen plattenförmigen Träger und mindestens eine auf ihn aufgebrachte aktive Schicht aus piezoelektrischem Material aufweisen, daß die Träger elektrisch leitend und über ihre Befestigung an der Legebarre auf Massepotential gehalten sind, und daß die aktive Schicht auf der dem Träger abgewandten Seite mit einer Elektrodenschicht versehen ist, an die eine Steuerleitung angeschlossen ist. Es genügt demnach eine einzige Steuerleitung pro Biegewandler, um ihn richtig anzusteuern.For the electrical connection, it is recommended that the bending transducers each have a plate-shaped support and at least one active layer of piezoelectric material applied to it, that the supports are electrically conductive and are held at ground potential via their attachment to the bar, and that the active layer is provided on the side facing away from the carrier with an electrode layer to which a control line is connected. A single control line per bending transducer is therefore sufficient to control it correctly.

Hierbei empfiehlt es sich, daß zu den Biegewandler führende Steuerleitungen oberhalb einer Haltevorrichtung für die Träger der Biegewandler verlaufen. Oberhalb der Haltevorrichtung ist ausreichend Platz für die Leitungen, die dort als Kabelbaum an das eine oder beide Enden der Jacquard-Legebarre geführt werden können.It is recommended that control lines leading to the bending transducers run above a holding device for the carriers of the bending transducers. Above the holding device there is sufficient space for the lines, which can be routed there as a wiring harness to one or both ends of the jacquard laying bar.

Es ist auch empfehlenswert, daß die Haltevorrichtung sich lediglich über einen Teil der Breite der Trägerenden erstreckt, und daß die Steuerleitungen zwischen den frei gelassenen Bereichen der Trägerenden hindurchgeführt sind. Hierbei dienen Sektionen der Haltevorrichtung als Abstandshalter, welche den freien Zutritt der Steuerleitungen zu den zugehörigen Anschlüssen erlauben.It is also recommended that the holding device only extend over a part of the width of the carrier ends and that the control lines are passed between the exposed regions of the carrier ends. Sections of the holding device serve as spacers, which allow free access of the control lines to the associated connections.

Besonders günstig ist es, daß die piezoelektrischen Wandler mit einer Spannung von etwa 25 bis 30 V betreibbar sind. Eine solche Spannung benötigt keine oder höchstens eine geringfügige Isolation. Sie läßt sich auch mit einem einfachen Gleichspannungswandler aus den üblichen bei TTL-Schaltungen oder Rechneranlagen auftretenden Spannungen gewinnen.It is particularly favorable that the piezoelectric transducers can be operated with a voltage of approximately 25 to 30 V. Such a voltage requires little or no insulation at all. It can also be obtained with a simple DC-DC converter from the usual voltages that occur in TTL circuits or computer systems.

Daher ist bei einer bevorzugten Ausführungsform dafür gesorgt, daß die Jacquard-Steuerung einen Musterspeicher und einen Rechner aufweist, der für jeden Arbeitszyklus der Kettenwirkmaschine die den einzelnen piezoelektrischen Wandler zugeordneten Steuersignale abgibt, und daß Gleichspannungswandler vorgesehen sind, die die Steuersignale in die Steuerspannung umsetzen. Auf diese Weise ergibt sich eine sehr einfache Rechnersteuerung der Jacquard-Vorrichtung.It is therefore ensured in a preferred embodiment that the jacquard controller has a pattern memory and a computer which emits the control signals assigned to the individual piezoelectric transducers for each working cycle of the warp knitting machine, and that DC-DC converters are provided which convert the control signals into the control voltage. To this This results in a very simple computer control of the jacquard device.

Die Erfindung wird nachstehend anhand in der Zeichnung dargestellter bevorzugter Ausführungsbeispiele näher erläutert. Es zeigen:

Fig. 1
eine schematische Darstellung einer erfindungsgemäßen Kettenwirkmaschine,
Fig. 2
einen vergrößerten Schnitt durch den unteren Bereich einer Jacquard-Legebarre,
Fig. 3
eine Ansicht von rechts auf Fig. 2,
Fig. 4
einen Vertikalschnitt durch eine abgewandelte Ausführungsform einer Legenadel,
Fig. 5
einen Vertikalschnitt durch eine weitere Abwandlung einer Legenadel und
Fig. 6
eine Ansicht von links auf Fig. 5.
The invention is explained in more detail below with reference to preferred exemplary embodiments illustrated in the drawing. Show it:
Fig. 1
1 shows a schematic representation of a warp knitting machine according to the invention,
Fig. 2
an enlarged section through the lower area of a jacquard laying bar,
Fig. 3
a view from the right on Fig. 2,
Fig. 4
3 shows a vertical section through a modified embodiment of a laying needle,
Fig. 5
a vertical section through a further modification of a laying needle and
Fig. 6
a view from the left on Fig. 5th

In Fig. 1 ist eine Kettenwirkmaschine 1 schematisch veranschaulicht, die eine Reihe von Wirknadeln 2 und drei Reihen von Legenadeln 3, 4 und 5 aufweist. Die Legenadeln sitzen an je einer Legebarre 6, 7 und 8, die in üblicher Weise durch Mustervorrichtungen in Richtung ihrer Längsachse, also senkrecht zur Zeichenebene, hin und her bewegbar sind, um die gewünschten Unter- und Überlegungen zu erzeugen. Die Legenadeln 3 haben die gleiche Teilung wie die Wirknadeln 2. Die Legenadeln 4 und 5 weisen jeweils die doppelte Teilung auf und stehen zueinander auf Lücke. Außerdem sind sie durch eine Jacquard-Steuerung um jeweils eine Wirknadelteilung verlagerbar.In Fig. 1, a warp knitting machine 1 is schematically illustrated, which has a row of knitting needles 2 and three rows of laying needles 3, 4 and 5. The laying needles each sit on a laying bar 6, 7 and 8, which can be moved back and forth in the usual way by pattern devices in the direction of their longitudinal axis, that is to say perpendicular to the plane of the drawing, in order to produce the desired considerations and considerations. The laying needles 3 have the same pitch as the knitting needles 2. The laying needles 4 and 5 each have a double pitch and are spaced from one another. In addition, they can be shifted by one knitting needle pitch by means of a jacquard control.

Die Jacquard-Steuerung weist für jede der Legenadeln 4 und 5 piezoelektrische Wandler 9 bzw. 10 auf, die über elektrische Steuerleitungen 11 und 12 ansteuerbar sind. Zu diesem Zweck ist die Hauptwelle 13 der Kettenwirkmaschine mit einem Drehwinkelmesser 14 versehen, der seine Drehwinkelsignale an einen Rechner 15 abgibt. Diesem ist ein Musterspeicher 16 zugeordnet. Aufgrund der gespeicherten Musterwerte gibt der Rechner für jeden Arbeitszyklus der Kettenwirkmaschine den einzelnen piezoelektrischen Wandlern 9, 10 zugeordnete Steuersignale ab. Diese werden mit einer Spannung von etwa 5 V an Gleichstromwandler 17 weitergegeben, die an ihren Ausgängen 18 mit je einer der Steuerleitungen 11, 12 verbunden sind. Bei Erregung durch den Rechner 15 gibt der zugehörige Ausgang eine Steuerspannung im Niederspannungsbereich, vorzugsweise von etwa 25 bis 30 V ab. Die Spannung wird zwischen der Steuerleitung und einem Masseanschluß 19 gemessen, der mit dem Masseanschluß des Gleichstromwandlers 17 und der Legebarre 7 bzw. 8 verbunden ist. Die Biegewandler sind so ausgelegt, daß sie bei dieser Steuerspannung die gewünschte Auslenkung der Legenadel 5 bewirken.The jacquard control has piezoelectric transducers 9 and 10 for each of the laying needles 4 and 5, which can be controlled via electrical control lines 11 and 12. For this purpose, the main shaft 13 of the warp knitting machine is provided with a rotation angle meter 14, which outputs its rotation angle signals to a computer 15. A pattern memory 16 is assigned to this. On the basis of the stored sample values, the computer emits control signals assigned to the individual piezoelectric transducers 9, 10 for each working cycle of the warp knitting machine. These are passed on with a voltage of approximately 5 V to DC converters 17, which are connected at their outputs 18 to one of the control lines 11, 12 each. When excited by the computer 15, the associated output outputs a control voltage in the low-voltage range, preferably from approximately 25 to 30 V. The voltage is measured between the control line and a ground connection 19, which is connected to the ground connection of the DC converter 17 and the laying bar 7 or 8. The bending transducers are designed so that they cause the desired deflection of the laying needle 5 at this control voltage.

Die Fig. 2 und 3 zeigen, wie ein als Biegewandler 10 ausgebildeter piezoelektrischer Wandler an der Legebarre 8 im einzelnen ausgebildet ist. Jeder Biegewandler weist einen Träger 20 in der Form einer rechteckigen Platte auf, die auf einer Seite mit einer aktiven Schicht 21 aus piezoelektrischem Material belegt ist. Die freie Seite dieser aktiven Schicht ist mit einer Elektrode 22 versehen, an der sich ein Anschluß 23 für eine der Steuerleitungen 12 befindet. Das eine Ende 24 des Trägers 20 ist in Schlitzen 25 einer als Haltevorrichtung 26 dienenden Leiste der Legebarre 8 angeordnet, die elektrisch leitend ist und daher den Träger mit Massepotential versorgen. Die Enden 24 können in den Schlitzen 25 durch Kleben oder auf andere bekannte Art, z.B. mittels eines Sperrdrahts festgelegt sein. Die Haltevorrichtung 26 hat eine geringere Breite als die Trägerenden 24, so daß ein freier Raum 27 verbleibt, über den die Endabschnitte 28 der Steuerleitungen 12 zum Anschluß 23 geführt werden. Auf den anderen Endbereich 29 ist ein flächiger Bereich 30 der Legenadel 5 aufgeklebt oder gelötet.2 and 3 show how a piezoelectric transducer designed as a bending transducer 10 is designed in detail on the bar 8. Each bending transducer has a carrier 20 in the form of a rectangular plate which is covered on one side with an active layer 21 made of piezoelectric material. The free side of this active layer is provided with an electrode 22, on which there is a connection 23 for one of the control lines 12. One end 24 of the carrier 20 is arranged in slots 25 of a bar of the laying bar 8 which serves as a holding device 26 and which is electrically conductive and therefore supply the carrier with ground potential. The ends 24 can be in the slots 25 by gluing or by other known means Type, for example, be set by means of a locking wire. The holding device 26 has a smaller width than the carrier ends 24, so that a free space 27 remains, via which the end sections 28 of the control lines 12 are led to the connection 23. A flat area 30 of the laying needle 5 is glued or soldered onto the other end area 29.

Jede Legenadel 5 ist zwischen zwei Anschlägen 31 angeordnet, welche jeweils die Arbeitsstellung der an ihnen anliegenden Legenadel 5 definieren. Außerdem ist in jedem Anschlag 31 ein Permanentmagnet 32 angeordnet, welcher Schwingungen beim Auftreffen der Legenadel auf den Anschlag vermindert.Each laying needle 5 is arranged between two stops 31, which each define the working position of the laying needle 5 resting on them. In addition, a permanent magnet 32 is arranged in each stop 31, which reduces vibrations when the laying needle hits the stop.

Wird nun eine Steuerspannung an einen der Biegewandler 10 angelegt, so will sich das piezoelektrische Material verformen. Dies ist aber nur auf der freien Seite möglich, weil der Träger 20 eine Dehnung oder Kontraktion nicht zuläßt. Je nach Richtung der angelegten Steuerspannung wird das freie Ende des Biegewandlers nach der einen oder anderen Richtung ausgelenkt. Wie Fig. 3 zeigt, ist eine solche Auslenkung bei drei Legenadeln 5' erfolgt.If a control voltage is now applied to one of the bending transducers 10, the piezoelectric material wants to deform. However, this is only possible on the free side because the carrier 20 does not permit expansion or contraction. Depending on the direction of the control voltage applied, the free end of the bending transducer is deflected in one direction or the other. As shown in FIG. 3, such a deflection took place with three laying needles 5 '.

Fig. 4 zeigt einen anderen Biegewandler 110, bei dem die Legenadel 105 und der Träger 120 einstückig ausgebildet sind. Über einen aktiven Abschnitt ist die Schicht 121 aus piezoelektrischem Material aufgetragen. Sie ist mit einer Elektrode 122 und einem zugehörigen Anschluß 123 versehen.4 shows another bending transducer 110, in which the laying needle 105 and the carrier 120 are formed in one piece. The layer 121 made of piezoelectric material is applied over an active section. It is provided with an electrode 122 and an associated connection 123.

Bei der Ausführungsform der Fig. 5 und 6 sind zwei Biegewandler 210 und 210' vorgesehen, deren Träger 220, 220' parallel zueinander eingespannt sind. Sie sind auf beiden Seiten der Legenadel 205 angebracht und werden beim Anlegen einer Steuerspannung gleichsinnig ausgelenkt. Hierdurch wird die Legenadel 205 parallel zu sich verschoben. Zwischen Biegewandler und Legenadel ist ein Biegegelenk 233 vorgesehen, das durch Durchbrüche 234 im Träger 220 gebildet ist. Dieses Biegegelenk hilft, den Aufbau innerer Spannungen bei der Auslenkung zu verringern.5 and 6, two bending transducers 210 and 210 'are provided, the supports 220, 220' of which are clamped parallel to one another. They are attached on both sides of the laying needle 205 and are deflected in the same direction when a control voltage is applied. As a result, the laying needle 205 is moved parallel to itself. A bending joint 233, which is formed by openings 234 in the carrier 220, is provided between the bending transducer and the laying needle. This flexible joint helps to reduce the build-up of internal stresses during the deflection.

Als Material für die aktive Schicht kommt hauptsächlich Piezokeramik in Betracht, also insbesondere synthetisch hergestellte, anorganische, polykristalline und nichtmetallische Werkstoffe, meist aus modifizierten Blei-Zirkonat-Titanaten. Sie erhalten ihre piezoelektrische Wirkung durch Polarisierung mit hohen Feldstärken oberhalb der Curie-Temperatur. Die aktive Schicht kann großflächig hergestellt, anschließend geschnitten und dann auf die zuvor geschnittenen Träger aufgeklebt werden.The material used for the active layer is mainly piezoceramic, in particular synthetically produced, inorganic, polycrystalline and non-metallic materials, mostly made of modified lead zirconate titanates. They get their piezoelectric effect through polarization with high field strengths above the Curie temperature. The active layer can be produced over a large area, then cut and then glued onto the previously cut carrier.

Wenn ein Biegewandler aus einer aktiven Schicht und einem passiven Träger nicht ausreicht, können auch Schichtkörper mit mehr als einer aktiven Piezokeramikschicht verwendet werden, beispielsweise eine passive Schicht zwischen zwei aktiven Schichten oder mehrere aktive Schichten, bei denen wenigstens eine in entgegengesetzter Richtung durch diese Steuerspannung beaufschlagt wird, als die anderen aktiven Schichten.If a bending transducer consisting of an active layer and a passive support is not sufficient, laminated bodies with more than one active piezoceramic layer can also be used, for example a passive layer between two active layers or a plurality of active layers in which at least one is acted upon in the opposite direction by this control voltage than the other active layers.

Piezoelektrische Biegewandler sind für spezielle Anwendungszwecke schon eingesetzt worden, beispielsweise zum Steuern eines faseroptischen Relais (Dissertation Eicher "Optimierung piezoelektrischer Biegewandler am Beispiel eines faseroptischen Relais", Berlin 1989).Piezoelectric bending transducers have already been used for special applications, for example for controlling a fiber-optic relay (dissertation Eicher "Optimizing piezoelectric bending transducers using the example of a fiber-optic relay", Berlin 1989).

Claims (18)

Kettenwirkmaschine mit Jacquard-Steuerung, bei der die Legenadeln wenigstens einer Legebarre aufgrund elektrischer Steuerbefehle individuell um wenigstens eine Wirknadelteilung verlagerbar sind, gekennzeichnet durch piezoelektrische Wandler (9, 10; 110; 210), die an der Legebarre (7, 8) angeordnet sind und die Legenadeln (4, 5) durch Anlegen einer Steuerspannung verlagern.Warp knitting machine with jacquard control, in which the laying needles of at least one laying bar can be moved individually by at least one knitting needle pitch on the basis of electrical control commands, characterized by piezoelectric transducers (9, 10; 110; 210) which are arranged on the laying bar (7, 8) and shift the laying needles (4, 5) by applying a control voltage. Kettenwirkmaschine nach Anspruch 1, dadurch gekennzeichnet, daß die piezoelektrischen Wandler als Biegewandler (10; 110; 210) ausgebildet sind.Warp knitting machine according to claim 1, characterized in that the piezoelectric transducers are designed as bending transducers (10; 110; 210). Kettenwirkmaschine nach Anspruch 2, dadurch gekennzeichnet, daß die Legenadeln (5) unter Zwischenschaltung der Biegewandler (10; 110; 210) an der Legebarre (8) befestigt sind.Warp knitting machine according to claim 2, characterized in that the laying needles (5) are attached to the laying bar (8) with the interposition of the bending transducers (10; 110; 210). Kettenwirkmaschine nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß jeder Legenadel (5) ein Biegewandler (10; 110; 210) zugeordnet ist, dessen eines Ende an der Legebarre (8) befestigt und dessen anderes Ende (29; 229) starr mit der Legenadel (5; 105; 2105) verbunden ist.Warp knitting machine according to claim 2 or 3, characterized in that a bending transducer (10; 110; 210) is assigned to each laying needle (5), one end of which is attached to the laying bar (8) and the other end (29; 229) is rigid with the Laying needle (5; 105; 2105) is connected. Kettenwirkmaschine nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß jeder Legenadel (205) mindestens zwei parallel nebeneinander verlaufende Biegewandler (210, 210') zugeordnet sind, deren eine Enden (224) an der Legebarre befestigt und deren andere Enden (229) mit der Legenadel (205) verbunden sind.Warp knitting machine according to claim 2 or 3, characterized in that each laying needle (205) is assigned at least two bending transducers (210, 210 ') running parallel to one another, one end (224) of which is attached to the bar and the other end (229) of which Laying needle (205) are connected. Kettenwirkmaschine nach einem der Ansprüche 2 bis 5, dadurch gekennzeichnet, daß die Biegewandler (10; 110; 210) je einen plattenförmigen Träger (20, 120, 220) und mindestens eine auf ihm aufgebrachte aktive Schicht (21; 121) aus piezoelektrischem Material aufweisen und daß der eine Endbereich (24; 224) der Platte in einer Haltevorrichtung der Legebarre (8) fest eingespannt ist und der andere Endbereich die Legenadel (5, 205) trägt.Warp knitting machine according to one of claims 2 to 5, characterized in that the bending transducers (10; 110; 210) each have a plate-shaped carrier (20, 120, 220) and at least one active layer (21; 121) made of piezoelectric material applied to it and that one end region (24; 224) of the plate is firmly clamped in a holding device of the laying bar (8) and the other end region carries the laying needle (5, 205). Kettenwirkmaschine nach Anspruch 6, dadurch gekennzeichnet, daß Träger (120) und Legenadel (105) einstückig ausgebildet sind.Warp knitting machine according to claim 6, characterized in that the carrier (120) and laying needle (105) are formed in one piece. Kettenwirkmaschine nach Anspruch 6, dadurch gekennzeichnet, daß die Legenadel (5) flächig auf dem anderen Endbereich (29) des Trägers (20) aufliegt und mit diesem durch Kleben, Löten o.dgl. verbunden ist.Warp knitting machine according to claim 6, characterized in that the laying needle (5) lies flat on the other end region (29) of the carrier (20) and with it by gluing, soldering or the like. connected is. Kettenwirkmaschine nach einem der Ansprüche 5 und 6 bis 8, dadurch gekennzeichnet, daß der Träger (220) zwischen aktiver Schicht (221) und Legenadel (205) zur Bildung von Biegegelenken (233) Materialdurchbrüche (233) aufweist.Warp knitting machine according to one of claims 5 and 6 to 8, characterized in that the carrier (220) between the active layer (221) and the laying needle (205) has material openings (233) to form bending joints (233). Kettenwirkmaschine nach einem der Ansprüche 6 bis 9, dadurch gekennzeichnet, daß die Breite des Trägers (20) und der aktiven Schicht (21) ein Mehrfaches der Breite der Legenadel (5) beträgt.Warp knitting machine according to one of claims 6 to 9, characterized in that the width of the carrier (20) and the active layer (21) is a multiple of the width of the laying needle (5). Kettenwirkmaschine nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, daß die Legenadel (5) jeweils zwischen zwei benachbarten Anschlägen (31) angeordnet ist, an welche sich die Legenadel (5) in ihren beiden Arbeitsstellungen anlegt.Warp knitting machine according to one of claims 1 to 10, characterized in that the laying needle (5) is arranged in each case between two adjacent stops (31) against which the laying needle (5) lies in its two working positions. Kettenwirkmaschine nach Anspruch 11, dadurch gekennzeichnet, daß sich die Legenadel (5) bei nichterregtem Biegewandler (10) unter eigner Vorspannung an den einen Anschlag (21) und bei erregtem Biegewandler unter dessen Biegekraft an den anderen Anschlag (31) anlegt.Warp knitting machine according to claim 11, characterized in that the laying needle (5), when the bending transducer (10) is not energized, bears against one stop (21) under its own pretension and, when the bending transducer is excited, under the bending force of the other stop (31). Kettenwirkmaschine nach Anspruch 11 oder 12, dadurch gekennzeichnet, daß wenigstens einer der Anschläge (31) einen Permanentmagneten (32) trägt, der die Legenadel (5) magnetisch anzieht.Warp knitting machine according to claim 11 or 12, characterized in that at least one of the stops (31) carries a permanent magnet (32) which magnetically attracts the laying needle (5). Kettenwirkmaschine nach einem der Ansprüche 2 bis 13, dadurch gekennzeichnet, daß die Biegewandler (10) je einen plattenförmigen Träger (20) und mindestens eine auf ihn aufgebrachte aktive Schicht (21) aus piezoelektrischem Material aufweisen, daß die Träger (20) elektrisch leitend und über ihre Befestigung an der Legebarre (8) auf Massepotential gehalten sind, und daß die aktive Schicht (21) auf der dem Träger (20) abgewandten Seite mit einer Elektrodenschicht (22) versehen ist, an die eine Steuerleitung (12) angeschlossen ist.Warp knitting machine according to one of claims 2 to 13, characterized in that the bending transducers (10) each have a plate-shaped support (20) and at least one active layer (21) made of piezoelectric material applied to it, that the supports (20) are electrically conductive and are held at ground potential via their attachment to the laying bar (8) and that the active layer (21) is provided on the side facing away from the carrier (20) with an electrode layer (22) to which a control line (12) is connected. Kettenwirkmaschine nach einem der Ansprüche 2 bis 14, dadurch gekennzeichnet, daß zu den Biegewandler (10) führende Steuerleitungen (12) oberhalb einer Haltevorrichtung (25, 26) für die Träger (20) der Biegewandler (10) verlaufen.Warp knitting machine according to one of claims 2 to 14, characterized in that control lines (12) leading to the bending transducers (10) run above a holding device (25, 26) for the carriers (20) of the bending transducers (10). Kettenwirkmaschine nach Anspruch 15, dadurch gekennzeichnet, daß die Haltevorrichtung (26) sich lediglich über einen Teil der Breite der Trägerenden (24) erstreckt, und daß die Steuerleitungen (12) zwischen den frei gelassenen Bereichen der Trägerenden (24) hindurchgeführt sind.Warp knitting machine according to claim 15, characterized in that the holding device (26) extends only over part of the width of the carrier ends (24), and in that the control lines (12) are passed between the exposed regions of the carrier ends (24). Kettenwirkmaschine nach einem der Ansprüche 1 bis 16, dadurch gekennzeichnet, daß die piezoelektrischen Wandler (10; 110; 210) mit einer Spannung von etwa 25 bis 30 V betreibbar sind.Warp knitting machine according to one of claims 1 to 16, characterized in that the piezoelectric transducers (10; 110; 210) can be operated with a voltage of approximately 25 to 30 V. Kettenwirkmaschine nach einem der Ansprüche 1 bis 17, dadurch gekennzeichnet, daß die Jacquard-Steuerung einen Musterspeicher (16) und einen Rechner (15) aufweist, der für jeden Arbeitszyklus der Kettenwirkmaschine (1) die den einzelnen piezoelektrischen Wandler (10) zugeordneten Steuersignale abgibt, und daß Gleichspannungswandler (17) vorgesehen sind, die die Steuersignale in die Steuerspannung umsetzen.Warp knitting machine according to one of claims 1 to 17, characterized in that the jacquard control has a pattern memory (16) and a computer (15) which emits the control signals assigned to the individual piezoelectric transducers (10) for each working cycle of the warp knitting machine (1) , and that DC-DC converters (17) are provided which convert the control signals into the control voltage.
EP93111569A 1992-08-14 1993-07-20 Warp knitting machine with Jacquard-control Expired - Lifetime EP0583631B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4226899A DE4226899C1 (en) 1992-08-14 1992-08-14 Warp knitting machine with jacquard control
DE4226899 1992-08-14

Publications (2)

Publication Number Publication Date
EP0583631A1 true EP0583631A1 (en) 1994-02-23
EP0583631B1 EP0583631B1 (en) 1996-06-12

Family

ID=6465528

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93111569A Expired - Lifetime EP0583631B1 (en) 1992-08-14 1993-07-20 Warp knitting machine with Jacquard-control

Country Status (6)

Country Link
US (1) US5390512A (en)
EP (1) EP0583631B1 (en)
JP (1) JPH06166934A (en)
KR (1) KR960000085B1 (en)
DE (2) DE4226899C1 (en)
ES (1) ES2089649T3 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2283501A (en) * 1993-11-02 1995-05-10 Mayer Textilmaschf Controlling thread guides in warp knitting machine
FR2718159A1 (en) * 1994-04-02 1995-10-06 Mayer Textilmaschf Chain knitter, equipped with a simplified drive device.
DE4414876A1 (en) * 1994-04-28 1995-11-02 Mayer Textilmaschf Process for producing a warp knitted fabric, warp knitting machine for carrying out this process and warp knitted fabric
GB2290310A (en) * 1994-05-28 1995-12-20 Mayer Textilmaschf Piezoelectric control of warp guides in a warp knitting machine
EP0690161A1 (en) * 1994-01-14 1996-01-03 Nippon Mayer Co., Ltd. Pattern effecting method and apparatus for a warp knitting machine
CN101463529B (en) * 2009-01-08 2013-03-20 郑依福 Fixing mode of jacquard shift needle
EP3910101A1 (en) * 2020-05-14 2021-11-17 KARL MAYER STOLL R&D GmbH Method for maintaining a warp knitting machine

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4316396C1 (en) * 1993-05-17 1994-09-15 Mayer Textilmaschf Warp-knitting machine with at least one guide bar
DE4421389C2 (en) * 1994-06-18 1996-09-26 Mayer Textilmaschf Jacquard bar for warp knitting machines
DE4435562C2 (en) 1994-10-05 1998-12-17 Mayer Textilmaschf Laying bar arrangement for a warp knitting machine
DE4442555C2 (en) * 1994-11-30 1997-03-13 Mayer Textilmaschf Warp knitting machine
DE4444823C2 (en) * 1994-12-15 1998-01-08 Liba Maschf Warp knitting machine with individually movable thread guides attached to a bar
DE4444822C2 (en) * 1994-12-15 1998-01-08 Liba Maschf Warp knitting machine with individually movable thread guides attached to a bar
DE19514995C2 (en) * 1995-04-24 1997-06-19 Mayer Textilmaschf Warp knitting machine
JPH09256252A (en) * 1996-03-19 1997-09-30 Fukuhara Seiki Seisakusho:Kk Controller for piezoelectric unit and controller for knitting tool having the same
DE19651053C1 (en) * 1996-12-09 1998-06-10 Mayer Textilmaschf Warp knitting machine with jacquard bar
DE19654327C1 (en) * 1996-12-24 1998-04-16 Mayer Textilmaschf Mechanism to control warps in a warp knitter
DE19739540C1 (en) * 1997-09-09 1999-03-04 Mayer Textilmaschf Warp knit production
JPH11172557A (en) * 1997-12-03 1999-06-29 Nippon Mayer Ltd Detection of brocken thread in warp-knitting machine and apparatus therefor
JP3023354B2 (en) 1998-04-22 2000-03-21 株式会社ワコール Clothing having a body shape adjustment function or muscle support function
DE19821845C2 (en) * 1998-05-15 2000-05-04 Mayer Textilmaschf Device on warp knitting machines for positioning a thread guide
EP1361305A4 (en) * 2000-09-27 2004-06-30 Nippon Mayer Co Ltd Jacquard device of warp knitting machine
DE60033856T2 (en) 2000-12-11 2007-12-20 Wacoal Corp. CLOTHING
CN1920146B (en) * 2005-08-23 2010-06-23 昆山攀特电陶科技有限公司 Carding structure of needle selecting equipment
IT1391730B1 (en) 2008-11-26 2012-01-27 Santoni & C Spa CONNECTION DEVICE FOR PIEZOELECTRIC ACTUATORS OF JACQUARD BARS OF TEXTILE MACHINES
IT1391729B1 (en) 2008-11-26 2012-01-27 Santoni & C Spa JACQUARD HEADBAND BAR FOR TEXTILE MACHINES FOR KNITWEAR IN CHAIN
IT1391728B1 (en) 2008-11-26 2012-01-27 Santoni & C Spa PIEZOELECTRIC ACTUATOR FOR LEAD GUIDES JACQUARD OF TEXTILE MACHINES
CN102021739B (en) * 2009-09-17 2012-11-28 卡尔迈尔纺织机械制造有限公司 Yarn tension device and manufacture method thereof
DE102010032997B4 (en) * 2010-07-31 2012-10-04 Karl Mayer Textilmaschinenfabrik Gmbh Guide needle arrangement of a knitting machine, in particular a Raschel machine
JP5545154B2 (en) * 2010-09-29 2014-07-09 株式会社ワコール Bottom clothing
DE102015114734B4 (en) 2015-09-03 2023-11-16 Baumüller Nürnberg GmbH Actuator for textile laying needles and other adjustment objects as well as a movement or adjustment method
CN107503039A (en) * 2017-08-30 2017-12-22 信泰(福建)科技有限公司 A kind of full machine electronic jacquard tricot machine comb
CN111441137B (en) * 2020-03-30 2021-07-02 福建屹立智能化科技有限公司 Intelligent yarn breaking stopping control method for jacquard and jacquard
CN111910337B (en) * 2020-08-10 2021-09-21 江苏明朗星新能源科技发展有限公司 Separable piezoelectric jacquard including electrode assembly
CN115341334B (en) * 2022-08-19 2023-10-24 江苏明朗星新能源科技发展有限公司 Needle plate for piezoelectric jacquard with metal reinforcing component

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3995451A (en) * 1971-03-30 1976-12-07 Firma Franz Morat Gmbh Patterning mechanism
EP0022557A1 (en) * 1979-07-12 1981-01-21 Grosse Webereimaschinen GmbH Selection apparatus for textile machinery
DE3321733A1 (en) * 1983-06-16 1984-12-20 Karl Mayer Textil-Maschinen-Fabrik Gmbh, 6053 Obertshausen CHAIN KNITTING MACHINE WITH JACQUARD HOLE NEEDLES
DE3705738A1 (en) * 1987-02-23 1988-09-01 Siemens Ag Actuating element with a piezoelectric flexural resonator for needle control in Jacquard and Jacquarette weaving machines
DE9101697U1 (en) * 1991-02-14 1991-05-02 Gerhard, Edmund, Prof. Dr.-Ing., 4150 Krefeld Jacquard eyelet needle
DE4028390A1 (en) * 1990-09-07 1992-03-12 Mayer Textilmaschf ELECTROMAGNETICALLY WORKING JACQUARD CONTROL DEVICE

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2316794A1 (en) * 1973-04-04 1974-10-17 Mayer & Cie Maschinenfabrik KNITTING MACHINE WITH PATTERN DEVICE
IT1194242B (en) * 1983-05-13 1988-09-14 Antonio Bonaschi PROCESS AND TEXTILE MACHINE FOR FORMING FABRICS WITH EMBROIDERY
JPS6228451A (en) * 1985-07-24 1987-02-06 渡辺靴下工業株式会社 Needle selector for knitting machine
IT1222416B (en) * 1987-07-31 1990-09-05 Luigi Omodeo Zorini CONTROL BODY FOR HARPES OF TUBES GUIDE-THREAD IN FRAMES FOR HOOKS
JPH01201558A (en) * 1988-02-01 1989-08-14 Watanabe Kutsushita Kogyo Kk Needle selector for knitting machine
JPH0694619B2 (en) * 1988-10-05 1994-11-24 ワツクデータサービス株式会社 Needle selection device for knitting machine
JP2860333B2 (en) * 1988-12-29 1999-02-24 ワックデータサービス株式会社 Piezo needle selection device for circular knitting machine
DE4001621A1 (en) * 1990-01-20 1991-07-25 Mayer Textilmaschf CHAIN-KNITTING MACHINE AND METHOD FOR PRODUCING POLWARE, AND RELATED POLWARE
JPH0735628B2 (en) * 1990-02-07 1995-04-19 永田精機株式会社 Piezoelectric needle selection device for knitting machine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3995451A (en) * 1971-03-30 1976-12-07 Firma Franz Morat Gmbh Patterning mechanism
EP0022557A1 (en) * 1979-07-12 1981-01-21 Grosse Webereimaschinen GmbH Selection apparatus for textile machinery
DE3321733A1 (en) * 1983-06-16 1984-12-20 Karl Mayer Textil-Maschinen-Fabrik Gmbh, 6053 Obertshausen CHAIN KNITTING MACHINE WITH JACQUARD HOLE NEEDLES
DE3705738A1 (en) * 1987-02-23 1988-09-01 Siemens Ag Actuating element with a piezoelectric flexural resonator for needle control in Jacquard and Jacquarette weaving machines
DE4028390A1 (en) * 1990-09-07 1992-03-12 Mayer Textilmaschf ELECTROMAGNETICALLY WORKING JACQUARD CONTROL DEVICE
DE9101697U1 (en) * 1991-02-14 1991-05-02 Gerhard, Edmund, Prof. Dr.-Ing., 4150 Krefeld Jacquard eyelet needle

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2283501A (en) * 1993-11-02 1995-05-10 Mayer Textilmaschf Controlling thread guides in warp knitting machine
GB2283501B (en) * 1993-11-02 1996-12-11 Mayer Textilmaschf Warp-knitting machine with at least one guide bar
EP0690161A1 (en) * 1994-01-14 1996-01-03 Nippon Mayer Co., Ltd. Pattern effecting method and apparatus for a warp knitting machine
EP0690161B1 (en) * 1994-01-14 1999-11-10 Nippon Mayer Co., Ltd. Patterning apparatus for a warp knitting machine
FR2718159A1 (en) * 1994-04-02 1995-10-06 Mayer Textilmaschf Chain knitter, equipped with a simplified drive device.
GB2289063B (en) * 1994-04-28 1998-05-06 Mayer Textilmaschf Method for manufacturing warp knitted fabric,warp knitting machine for the purpose of carrying out this method and warp knitted fabric
US5628210A (en) * 1994-04-28 1997-05-13 Karl Mayer Textilmaschinenfabrik Gmbh Warp knitting method, machine, and fabric made therefrom
GB2289063A (en) * 1994-04-28 1995-11-08 Mayer Textilmaschf Method for manufacturing warp knitted fabric
DE4414876A1 (en) * 1994-04-28 1995-11-02 Mayer Textilmaschf Process for producing a warp knitted fabric, warp knitting machine for carrying out this process and warp knitted fabric
US5533366A (en) * 1994-05-28 1996-07-09 Karl Mayer Textilmaschinenfabrik Gmbh Warp knitting machine having at least one guide bar and replacement unit for such a warp knitting machine
GB2290310A (en) * 1994-05-28 1995-12-20 Mayer Textilmaschf Piezoelectric control of warp guides in a warp knitting machine
GB2290310B (en) * 1994-05-28 1998-06-24 Mayer Textilmaschf Warp knitting machine having at least one guide bar and replacement unit for such a warp knitting machine
CN101463529B (en) * 2009-01-08 2013-03-20 郑依福 Fixing mode of jacquard shift needle
EP3910101A1 (en) * 2020-05-14 2021-11-17 KARL MAYER STOLL R&D GmbH Method for maintaining a warp knitting machine

Also Published As

Publication number Publication date
DE59302891D1 (en) 1996-07-18
KR960000085B1 (en) 1996-01-03
EP0583631B1 (en) 1996-06-12
ES2089649T3 (en) 1996-10-01
US5390512A (en) 1995-02-21
DE4226899C1 (en) 1994-01-13
JPH06166934A (en) 1994-06-14
KR940004112A (en) 1994-03-14

Similar Documents

Publication Publication Date Title
EP0583631B1 (en) Warp knitting machine with Jacquard-control
EP2099640B1 (en) Magnetic levitation vehicle comprising at least one magnetic system
DE3812028C2 (en)
EP0705930B1 (en) Guide bar device for a warp knitting machine
DE2543411C2 (en) Actuating device for a print wire of a matrix printer
DE3933149A1 (en) KNITTING NEEDLE DRIVE MECHANISM OF A KNITTING MACHINE
EP2209202A2 (en) Method for operating a piezo linear drive with a group of piezo stack actuators
DE1635848C3 (en) Pattern device for circular knitting machines with rotating needle carriers
WO2005090115A1 (en) Magnet arrangement for a magnetic levitation vehicle
DE3534214A1 (en) X-Y TABLE WITH LINEAR MOTOR DRIVE
DE4337265C1 (en) Warp-knitting machine with at least one guide bar
DE19514995C2 (en) Warp knitting machine
DE2441588C2 (en) Magnetic positioning device with two linear stepper motors
DE4442555C2 (en) Warp knitting machine
DE102006053423B4 (en) Relay and relay arrangement
EP0846797B1 (en) Warp knitting machine with Jacquard-inlay bar
DE4243981A1 (en)
DE2717254A1 (en) ELECTRIC FABRIC CONTROL MATRIX
EP0646975A1 (en) Tortional actuator and method of making the same
DE69415891T2 (en) Dot print head and method for print control
EP1151441B1 (en) Contour collimator for use in radiotherapy
DE1287417B (en) Positioning device
AT523217A1 (en) Transport device
EP0860529B1 (en) Control module for controlling the needles of a knitting machine
CH654861A5 (en) EMBROIDERY MACHINE.

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19931201

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): CH DE ES FR GB IT LI

17Q First examination report despatched

Effective date: 19951120

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): CH DE ES FR GB IT LI

ITF It: translation for a ep patent filed

Owner name: JACOBACCI & PERANI S.P.A.

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: BOVARD AG PATENTANWAELTE

REF Corresponds to:

Ref document number: 59302891

Country of ref document: DE

Date of ref document: 19960718

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19960725

ET Fr: translation filed
REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2089649

Country of ref document: ES

Kind code of ref document: T3

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2089649

Country of ref document: ES

Kind code of ref document: T3

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20080723

Year of fee payment: 16

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20080718

Year of fee payment: 16

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20080723

Year of fee payment: 16

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20090720

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20100331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090720

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20090721

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090721

REG Reference to a national code

Ref country code: CH

Ref legal event code: PFA

Owner name: KARL MAYER TEXTILMASCHINENFABRIK GMBH

Free format text: KARL MAYER TEXTILMASCHINENFABRIK GMBH#BRUEHLSTRASSE 25#D-63166 OBERTSHAUSEN (DE) -TRANSFER TO- KARL MAYER TEXTILMASCHINENFABRIK GMBH#BRUEHLSTRASSE 25#D-63166 OBERTSHAUSEN (DE)

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20110725

Year of fee payment: 19

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20110719

Year of fee payment: 19

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20120724

Year of fee payment: 20

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120731

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120731

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130201

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 59302891

Country of ref document: DE

Effective date: 20130201