EP3358059B1 - Method for producing control data of a warp knitting machine - Google Patents

Method for producing control data of a warp knitting machine Download PDF

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Publication number
EP3358059B1
EP3358059B1 EP17154114.7A EP17154114A EP3358059B1 EP 3358059 B1 EP3358059 B1 EP 3358059B1 EP 17154114 A EP17154114 A EP 17154114A EP 3358059 B1 EP3358059 B1 EP 3358059B1
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Prior art keywords
pattern
image data
properties
control data
computer
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EP17154114.7A
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German (de)
French (fr)
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EP3358059A1 (en
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Herbert Wamser
Peter Dr. Knaup
Frank Harmeling
Michael Kieren
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Karl Mayer Stoll R&D GmbH
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Karl Mayer Stoll R&D GmbH
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Priority to EP17154114.7A priority Critical patent/EP3358059B1/en
Priority to CN201710195916.0A priority patent/CN108374233A/en
Publication of EP3358059A1 publication Critical patent/EP3358059A1/en
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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B35/00—Details of, or auxiliary devices incorporated in, knitting machines, not otherwise provided for
    • D04B35/10—Indicating, warning, or safety devices, e.g. stop motions
    • D04B35/20—Indicating, warning, or safety devices, e.g. stop motions responsive to defects, e.g. holes, in knitted products
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B21/00—Warp knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
    • D04B21/06—Patterned fabrics or articles
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B37/00—Auxiliary apparatus or devices for use with knitting machines
    • D04B37/06—Auxiliary apparatus or devices for use with knitting machines with warp knitting machines

Definitions

  • the invention relates to a method for generating control data of a warp knitting machine, in which properties of areas of a knitted fabric are defined which can be influenced by the mode of operation of the warp knitting machine, image data is provided for a pattern and the pattern is displayed, the computer using the pattern to the Control data belonging to the respective area is generated.
  • the designer or pattern designer comes up with a specific embodiment of the fabric. He then specifies laying types for certain areas of the fabric, using a warp knitting machine can be realized, and generates control data from it, with which the guide bars of the warp knitting machine must be controlled in order to produce the fabric.
  • DE 29 48 756 A1 describes a device for automatic position control of a machine part of a warp knitting machine, in which movement patterns for stepping motors or other drive means for the knitting tools of the warp knitting machine are provided via control data.
  • CN 105 063 881 A describes a warp knitting machine with a camera component and an image analysis and processing system connected to the camera component.
  • the camera can be moved over the fabric produced in order to record errors.
  • the invention is based on the object of making the implementation of ideas of a fabric designer into a fabric as simple as possible.
  • This object is achieved by a method for generating control data of a warp knitting machine that one, by a computer for each Area can search for at least one pattern that fulfills the properties to a predetermined degree.
  • the implementation of a pattern designer's ideas in a finished fabric is made much easier.
  • the pattern designer no longer needs to have in-depth knowledge of the relationships between a special layout and the resulting properties. Rather, it is sufficient if he specifies such a property.
  • Properties can be, for example, the grammage, i.e. the mass per square meter, the elasticity or stability in the longitudinal and transverse direction, the flexural strength, or simply the appearance.
  • the geometry there are, for example, the geometry, the type of surface, for example glossy or matt, a three-dimensional effect, or haptic properties, i.e. the fiber roughness or the contact with a given surface.
  • a color is also a design feature for a fabric.
  • the color is determined by the thread to be used. If the pattern designer has specified a property for a certain area, then the Using a database, computers look for an appropriate pattern that fulfills this characteristic. This pattern is then displayed and at the same time the corresponding control data for this pattern is provided. The pattern designer can then easily check whether the pattern for the specified area of the knitted fabric corresponds to his ideas or not. The only prerequisite for such an approach is usually that the individual areas of the newly designed material have been digitized. Appropriate programs are available for this.
  • the pattern to which the pattern fulfills the properties is preferably indicated. In particular, if a certain pattern is to fulfill several properties, it can happen that not all properties are fully met. In this case, the computer can then provide the pattern designer with assistance by showing the degree to which the properties have been met. The pattern designer can then decide whether the resulting properties correspond to his ideas or not.
  • a selection means is preferably actuated in order to select a specific pattern. It can happen that several patterns come into question because they all meet the required properties. In this case, all the relevant samples are displayed, if necessary also with an indication of the degree to which they meet the properties. The pattern designer can then select a specific pattern via the selection means.
  • the computer preferably generates an error message in the event of a combination of patterns which do not match one another in terms of machine technology. For example, patterns do not fit with one another in terms of machine technology if the fabric is produced in the warp knitting machine and is inadmissibly high Tensions occur in the threads. Such tensions could not only change the appearance of the fabric, but could also disrupt or even make production impossible. The pattern designer is informed of such errors at a relatively early stage.
  • the error message preferably indicates at least one affected area. So not only does it indicate that there is an error, it also shows where the error is. It is then easily possible for the pattern designer to localize and eliminate the error.
  • the control data can preferably be used to generate a list of the raw materials required.
  • the raw materials are primarily the threads used to produce the fabric, possibly threads already wound into warp beams. Furthermore, the raw materials required for the subsequent equipment can already be displayed.
  • the invention also relates to a method for producing a knitted fabric with control data which, as stated above, have been generated, the knitted fabric being recorded by a camera and actual image data thus generated and the actual image data compared with target image data which the Computer provided along with the sample.
  • the comparison between the actual image data and the target image data is preferably carried out by a computer. Since basically only data have to be compared with one another, a computer can take over this task, which further simplifies the procedure.
  • a pattern designer creates a fabric.
  • the fabric has different areas.
  • the individual areas have different properties according to the ideas of the pattern designer. These are properties that can be influenced by the mode of operation of the warp knitting machine, in particular the laying.
  • the properties can also be influenced by the thread tension of the supplied threads and by the withdrawal tension.
  • the properties include grammage, i.e. mass / m2, elasticity, stability in the longitudinal and transverse direction, flexural rigidity, transparency, open or closed areas, geometry, surface properties, three-dimensional effect and haptic properties. This list does not necessarily have to be exhaustive.
  • step 1 the pattern designer has laid down the fabric with his design in some way so that the fabric, more precisely the design of the fabric, can be digitized in a step 2.
  • the digital data are fed into a computer in step 3 or are already available on the computer after digitization. With the digitization of the individual areas, the properties of the areas are also transferred to the computer.
  • the computer searches for patterns for all specified areas that meet the required properties.
  • the patterns are particularly characterized by their laying data.
  • the specified tensions of the threads during feeding or of the knitted fabric during removal also influence the pattern and can accordingly be taken into account.
  • image data are stored in the database with which the corresponding patterns of the areas can be reproduced optically.
  • control data with which the corresponding patterns are generated are also stored.
  • the computer thus provides the image data in a step 5, which are referred to below as "target data" are designated.
  • target data is designated.
  • a step 6 it provides the control data for the warp knitting machine.
  • the target image data are displayed to the pattern designer.
  • the pattern designer has the opportunity to check whether the composition of the patterns for the fabric he has designed corresponds to his ideas.
  • This case can occur, for example, when there are several patterns which all meet the desired properties or property combinations.
  • the case can also occur when there is no pattern that satisfies all properties or property combinations at the same time.
  • the pattern designer then has the option in a step 8 of using a selection means 8a, for example a mouse pointer or a keyboard, to select a specific pattern which, in his opinion, best fits the fabric he has designed. Simultaneously with the selection of the pattern, the corresponding control data are also selected in a step 9.
  • a selection means 8a for example a mouse pointer or a keyboard
  • the computer checks whether the control data can be implemented in the specified manner, that is to say whether they match one another in terms of machine technology. In some cases, however, the combination of patterns from adjacent areas can result in inadmissibly high tensions in the threads, which make it difficult or even impossible to manufacture the fabric. Other possible errors can occur, for example, when areas that are adjacent to one another, or at least are arranged in the vicinity of one another, fail to pass Displacement movements of guide bars can be generated because they influence each other negatively in an impermissible manner. In this case, the computer can output an error message in a step 11 and at the same time display which areas are affected by the error.
  • step 12 For the problematic areas.
  • Such an error correction can for example consist in the fact that the corresponding problematic areas of the material are rotated or tilted somewhat in the plane of the material.
  • a "turning” is to be understood here as a rotation of the pattern about an axis which is perpendicular to the fabric. When "tilting”, however, a parallelogram-like displacement of the pattern is carried out. In many cases, there is no noticeable optical change in both areas if the corresponding correction angle is small.
  • control data are sent to the warp knitting machine in a step 13 and production can begin.
  • a camera records the fabric produced and uses it to generate actual image data.
  • the actual image data can either be sent back directly to the pattern designer, who can view them on a corresponding display device, for example a screen, in order to check whether the fabric produced corresponds to his ideas.
  • the actual image data generated can also be compared in a step 15 with the desired image data generated in step 5, for which purpose a computer is also expediently used. If there is a sufficient match, production can be continued. If there are impermissible deviations, production is stopped and an error can be searched for.

Description

Die Erfindung betrifft ein Verfahren zum Erzeugen von Steuerdaten einer Kettenwirkmaschine, bei dem man Eigenschaften von Bereichen einer Wirkware definiert, die durch die Arbeitsweise der Kettenwirkmaschine beeinflussbar sind, Bilddaten für ein Muster bereitstellt und das Muster anzeigt, wobei der Computer mit dem Muster die zu dem jeweiligen Bereich gehörigen Steuerdaten erzeugt.The invention relates to a method for generating control data of a warp knitting machine, in which properties of areas of a knitted fabric are defined which can be influenced by the mode of operation of the warp knitting machine, image data is provided for a pattern and the pattern is displayed, the computer using the pattern to the Control data belonging to the respective area is generated.

Ein derartiges Verfahren ist aus EP 0 640 707 A1 bekannt. Hier sind für verschiedene Strukturen der Wirkware, wie Jaquard oder Intarsien, unterschiedliche Speicherbereiche vorgesehen, wobei man Bilddaten aus den Speicherbereichen kombinieren und zu einem gemeinsamen Bild zusammensetzen kann, das an einem Monitor angezeigt werden kann.Such a procedure is over EP 0 640 707 A1 known. Here, different storage areas are provided for different structures of the knitted fabric, such as jacquard or inlays, whereby image data from the storage areas can be combined and put together to form a common image that can be displayed on a monitor.

Bei der Gestaltung einer Kettenwirkware, die im Folgenden kurz als "Stoff" bezeichnet wird, denkt sich der Gestalter oder Musterdesigner eine bestimmte Ausführungsform des Stoffes aus. Er gibt dann für bestimmte Bereiche des Stoffs Legungsarten vor, die mit einer Kettenwirkmaschine realisiert werden können, und erzeugt daraus Steuerdaten, mit denen die Legebarren der Kettenwirkmaschine angesteuert werden müssen, um den Stoff zu erzeugen.When designing a warp knitted fabric, which will be referred to as "fabric" for short, the designer or pattern designer comes up with a specific embodiment of the fabric. He then specifies laying types for certain areas of the fabric, using a warp knitting machine can be realized, and generates control data from it, with which the guide bars of the warp knitting machine must be controlled in order to produce the fabric.

Eine derartige Vorgehensweise setzt beim Mustergestalter ein erhebliches Maß an Wissen und Erfahrung voraus. Auch mit einem entsprechenden Wissen und einer entsprechenden Erfahrung ist es oft notwendig, nach dem Erzeugen eines Probestücks des Stoffs Korrekturen vorzunehmen, weil das Muster des Stoffs nicht ganz den Vorstellungen des Entwerfers entspricht. Änderungen von Steuerdaten sind bei elektronisch angesteuerten Legebarren zwar in der Regel ohne Eingriffe in mechanische Übertragungsglieder möglich. Sie erfordern aber dennoch einen gewissen Aufwand.Such an approach requires a considerable amount of knowledge and experience on the part of the sample designer. Even with appropriate knowledge and experience, it is often necessary to make corrections after a sample of the fabric has been created because the pattern of the fabric does not quite match the designer's ideas. In the case of electronically controlled guide bars, changes to control data are generally possible without interfering with mechanical transmission elements. But they still require a certain amount of effort.

DE 29 48 756 A1 beschreibt eine Einrichtung zur automatischen Positionssteuerung eines Maschinenteils einer Kettenwirkmaschine, in der Bewegungsmuster für Schrittmotoren oder andere Antriebsmittel für die Wirkwerkzeuge der Kettenwirkmaschine über Steuerdaten bereitgestellt werden. DE 29 48 756 A1 describes a device for automatic position control of a machine part of a warp knitting machine, in which movement patterns for stepping motors or other drive means for the knitting tools of the warp knitting machine are provided via control data.

CN 105 063 881 A beschreibt eine Kettenwirkmaschine mit einer Kamerakomponente und einem Bildanalyse- und -verarbeitungssystem, das mit der Kamerakomponente verbunden ist. Die Kamera kann über den produzierten Stoff verfahren werden, um Fehler aufzunehmen. CN 105 063 881 A describes a warp knitting machine with a camera component and an image analysis and processing system connected to the camera component. The camera can be moved over the fabric produced in order to record errors.

Der Erfindung liegt die Aufgabe zugrunde, die Umsetzung von Vorstellungen eines Stoffgestalters in einen Stoff möglichst einfach zu gestalten.The invention is based on the object of making the implementation of ideas of a fabric designer into a fabric as simple as possible.

Diese Aufgabe wird durch ein Verfahren zum Erzeugen von Steuerdaten einer Kettenwirkmaschine gelöst, dass man, durch einen Computer für jeden Bereich mindestens ein die Eigenschaften zu einem vorbestimmten Grad erfüllendes Muster suchen lässt.This object is achieved by a method for generating control data of a warp knitting machine that one, by a computer for each Area can search for at least one pattern that fulfills the properties to a predetermined degree.

Mit diesem Verfahren wird die Umsetzung von Vorstellungen eines Musterdesigners in einen fertigen Stoff ganz erheblich erleichtert. Der Musterdesigner muss nicht mehr über tiefgreifende Kenntnisse über Zusammenhänge zwischen einer speziellen Legung und den daraus resultierenden Eigenschaften verfügen. Es reicht vielmehr aus, wenn er eine derartige Eigenschaft vorgibt. Eigenschaften können beispielsweise sein die Grammatur, also die Masse pro qm, die Elastizität bzw. Stabilität in Längs- und Querrichtung, die Biegesteifigkeit, oder einfach das Aussehen. Beim Aussehen gibt es beispielsweise als Eigenschaften die Geometrie, die Art der Oberfläche, beispielsweise glänzend oder matt, eine dreidimensionale Wirkung, oder haptische Eigenschaften, also die Faserrauigkeit oder der Kontakt zu einer vorgegebenen Oberfläche. Natürlich ist auch eine Farbe ein Gestaltungsmerkmal für einen Stoff. Die Farbe wird jedoch durch das zu verwendende Garn bestimmt. Wenn der Musterdesigner für einen bestimmten Flächenbereich eine Eigenschaft vorgegeben hat, dann kann der Computer anhand einer Datenbank ein entsprechendes Muster heraussuchen, dass diese Eigenschaft erfüllt. Dieses Muster wird dann angezeigt und gleichzeitig werden die entsprechenden Steuerdaten für dieses Muster bereitgestellt. Der Musterdesigner kann dann auf einfache Weise überprüfen, ob das Muster für den vorgegebenen Bereich der Wirkware seinen Vorstellungen entspricht oder nicht. Voraussetzung für eine derartige Vorgehensweise ist in der Regel lediglich, dass die einzelnen Bereiche des neu gestalteten Stoffs digitalisiert worden sind. Hierfür stehen aber entsprechende Programme zur Verfügung.With this method, the implementation of a pattern designer's ideas in a finished fabric is made much easier. The pattern designer no longer needs to have in-depth knowledge of the relationships between a special layout and the resulting properties. Rather, it is sufficient if he specifies such a property. Properties can be, for example, the grammage, i.e. the mass per square meter, the elasticity or stability in the longitudinal and transverse direction, the flexural strength, or simply the appearance. In terms of appearance, there are, for example, the geometry, the type of surface, for example glossy or matt, a three-dimensional effect, or haptic properties, i.e. the fiber roughness or the contact with a given surface. Of course, a color is also a design feature for a fabric. However, the color is determined by the thread to be used. If the pattern designer has specified a property for a certain area, then the Using a database, computers look for an appropriate pattern that fulfills this characteristic. This pattern is then displayed and at the same time the corresponding control data for this pattern is provided. The pattern designer can then easily check whether the pattern for the specified area of the knitted fabric corresponds to his ideas or not. The only prerequisite for such an approach is usually that the individual areas of the newly designed material have been digitized. Appropriate programs are available for this.

Vorzugsweise lässt man bei dem Muster anzeigen, zu welchem Grad das Muster die Eigenschaften erfüllt. Insbesondere dann, wenn ein bestimmtes Muster mehrere Eigenschaften erfüllen soll, kann es vorkommen, dass nicht alle Eigenschaften vollständig erfüllt werden. In diesem Fall kann der Computer dann dem Musterdesigner eine Hilfe an die Hand geben, in dem er anzeigt, zu welchem Grad die Eigenschaften erfüllt sind. Der Musterdesigner kann dann entscheiden, ob die dann resultierenden Eigenschaften seinen Vorstellungen entsprechen oder nicht.The pattern to which the pattern fulfills the properties is preferably indicated. In particular, if a certain pattern is to fulfill several properties, it can happen that not all properties are fully met. In this case, the computer can then provide the pattern designer with assistance by showing the degree to which the properties have been met. The pattern designer can then decide whether the resulting properties correspond to his ideas or not.

Vorzugsweise betätigt man bei Vorliegen mehrerer möglicher Muster ein Auswahlmittel, um ein bestimmtes Muster auszuwählen. Es kann vorkommen, dass mehrere Muster infrage kommen, weil sie alle die geforderten Eigenschaften erfüllen. In diesem Fall werden alle entsprechenden Muster angezeigt, ggfs. auch unter Angabe des Grades, in welchem Umfang sie die Eigenschaften erfüllen. Der Musterdesigner kann dann über das Auswahlmittel ein bestimmtes Muster auswählen.If several possible patterns are present, a selection means is preferably actuated in order to select a specific pattern. It can happen that several patterns come into question because they all meet the required properties. In this case, all the relevant samples are displayed, if necessary also with an indication of the degree to which they meet the properties. The pattern designer can then select a specific pattern via the selection means.

Bevorzugterweise erzeugt der Computer bei einer Kombination von Mustern, die maschinentechnisch nicht zueinander passen, eine Fehlermeldung. Muster passen beispielsweise dann nicht maschinentechnisch zueinander, wenn beim Herstellen des Stoffs in der Kettenwirkmaschine unzulässig hohe Spannungen in den Fäden auftreten. Derartige Spannungen könnten dann nicht nur das Aussehen des Stoffs verändern, sondern sie könnten auch die Produktion stören oder sogar unmöglich machen. Der Musterdesigner wird also in einem relativ frühen Stadium auf derartige Fehler hingewiesen.The computer preferably generates an error message in the event of a combination of patterns which do not match one another in terms of machine technology. For example, patterns do not fit with one another in terms of machine technology if the fabric is produced in the warp knitting machine and is inadmissibly high Tensions occur in the threads. Such tensions could not only change the appearance of the fabric, but could also disrupt or even make production impossible. The pattern designer is informed of such errors at a relatively early stage.

Vorzugsweise zeigt die Fehlermeldung mindestens einen betroffenen Bereich an. Es wird also nicht nur angegeben, dass ein Fehler vorliegt, sondern es wird auch angezeigt, wo der Fehler vorliegt. Für den Musterdesigner ist es dann auf einfache Weise möglich, den Fehler zu lokalisieren und zu beseitigen.The error message preferably indicates at least one affected area. So not only does it indicate that there is an error, it also shows where the error is. It is then easily possible for the pattern designer to localize and eliminate the error.

Hierbei kann man dann so vorgehen, dass man nach einer Fehlermeldung mindestens einen der betroffenen Bereiche verändert. Es muss also nicht der gesamte Stoff neu gestaltet werden, sondern man kann lokal in einen Bereich eingreifen, bei dem ein Problem entstanden ist.You can then proceed in such a way that at least one of the affected areas is changed after an error message. So you don't have to redesign the entire material, you can intervene locally in an area where a problem has arisen.

Hierbei kann man beispielsweise den zu verändernden Bereich drehen, kippen, dehnen, verschieben, verkleinern oder vergrößern. Das Drehen oder Kippen erfolgt dann beispielsweise um eine Achse, die auf dem Stoff senkrecht steht. Beim Drehen oder Kippen eines Musters wird, in Abhängigkeit von dem Winkel, in dem die Veränderung vorgenommen wird, das Aussehen des Stoffs nicht wesentlich verändert, so dass die Fehlerbeseitigung im Grunde keine optischen Auswirkungen hat, sondern nur die spätere Fertigung erleichtert.Here you can, for example, rotate, tilt, stretch, move, reduce or enlarge the area to be changed. The rotation or tilting then takes place, for example, about an axis that is perpendicular to the fabric. When rotating or tilting a pattern, depending on the angle at which the change is made, the appearance of the fabric is not significantly changed, so that the debugging has basically no visual impact, but only facilitates the subsequent production.

Vorzugsweise kann man mit Hilfe der Steuerdaten eine Liste mit benötigten Rohmaterialien erstellen lassen. Rohmaterialien sind in erster Linie die für die Erzeugung des Stoffs verwendeten Fäden, ggfs. auch bereits zu Kettbäumen aufgewickelte Fäden. Weiterhin können für die spätere Ausrüstung notwendige Rohmaterialien bereits angezeigt werden.The control data can preferably be used to generate a list of the raw materials required. The raw materials are primarily the threads used to produce the fabric, possibly threads already wound into warp beams. Furthermore, the raw materials required for the subsequent equipment can already be displayed.

Die Erfindung betrifft auch ein Verfahren zum Erzeugen einer Wirkware mit Steuerdaten, die, wie oben angegeben, erzeugt worden sind, wobei man die Wirkware durch eine Kamera aufnimmt und damit Ist-Bilddaten erzeugt und die Ist-Bilddaten mit Soll-Bilddaten vergleicht, die der Computer gemeinsam mit dem Muster bereitgestellt hat.The invention also relates to a method for producing a knitted fabric with control data which, as stated above, have been generated, the knitted fabric being recorded by a camera and actual image data thus generated and the actual image data compared with target image data which the Computer provided along with the sample.

Mit einem derartigen Verfahren wird auf einfache Weise eine automatische Produktionskontrolle ermöglicht. Eine Übereinstimmung zwischen den Ist-Bilddaten und den Soll-Bilddaten lässt sich durch entsprechende Mechanismen leicht überprüfen. Sollte die Überprüfung positiv ausfallen, kann die Produktion fortgesetzt werden. Sollte die Überprüfung nicht positiv ausfallen, kann eine entsprechende Meldung an den Musterdesigner zurückgegeben werden. Gleichzeitig kann man dann die Ist-Bilddaten beim Musterdesigner anzeigen lassen, so dass der Musterdesigner herausfinden kann, wo das Problem liegt. Auf diese Weise kann man in vielen Fällen eine physische Übersendung des Stoffs an den Musterdesigner zum Zwecke der Kontrolle vermeiden.With such a method, automatic production control is made possible in a simple manner. Correspondence between the actual image data and the target image data can easily be checked using appropriate mechanisms. If the check is positive, production can be continued. If the check is not positive, a corresponding message can be returned to the pattern designer. At the same time, the actual image data can then be displayed at the pattern designer so that the pattern designer can find out where the problem lies. In this way, in many cases, it is possible to avoid physically sending the fabric to the pattern designer for control purposes.

Vorzugsweise wird der Vergleich zwischen den Ist-Bilddaten und den Soll-Bilddaten durch einen Computer vorgenommen. Da im Grunde nur Daten miteinander verglichen werden müssen, kann ein Computer diese Aufgabe übernehmen, was zu einer weiteren Erleichterung der Vorgehensweise führt.The comparison between the actual image data and the target image data is preferably carried out by a computer. Since basically only data have to be compared with one another, a computer can take over this task, which further simplifies the procedure.

Die Erfindung wird im Folgenden anhand eines schematischen Ablaufs erläutert.The invention is explained below with the aid of a schematic sequence.

In einem Schritt 1 entwirft ein Musterdesigner einen Stoff. Der Stoff weist unterschiedliche Bereiche auf. Die einzelnen Bereiche haben nach Vorstellungen des Musterdesigners unterschiedliche Eigenschaften. Es handelt sich dabei um Eigenschaften, die durch die Arbeitsweise der Kettenwirkmaschine, insbesondere die Legungen, beeinflussbar sind.In a step 1, a pattern designer creates a fabric. The fabric has different areas. The individual areas have different properties according to the ideas of the pattern designer. These are properties that can be influenced by the mode of operation of the warp knitting machine, in particular the laying.

Daneben lassen sich die Eigenschaften auch durch die Fadenspannung der zugeführten Fäden und durch die Abzugsspannung beeinflussen. Zu den Eigenschaften gehören Grammatur, also Masse/qm, Elastizität, Stabilität in Längs- und Querrichtung, Biegesteifigkeit, Transparenz, offene oder geschlossene Bereiche, Geometrie, Oberflächeneigenschaften, dreidimensionale Wirkung und haptische Eigenschaften. Diese Aufzählung muss nicht unbedingt abschließend sein.In addition, the properties can also be influenced by the thread tension of the supplied threads and by the withdrawal tension. The properties include grammage, i.e. mass / m2, elasticity, stability in the longitudinal and transverse direction, flexural rigidity, transparency, open or closed areas, geometry, surface properties, three-dimensional effect and haptic properties. This list does not necessarily have to be exhaustive.

Am Ende des Schritts 1 hat der Musterdesigner den Stoff mit seiner Gestaltung in irgendeiner Weise niedergelegt, so dass der Stoff, genauer gesagt, die Gestaltung des Stoffs, in einem Schritt 2 digitalisiert werden kann.At the end of step 1, the pattern designer has laid down the fabric with his design in some way so that the fabric, more precisely the design of the fabric, can be digitized in a step 2.

Die digitalen Daten werden in einem Schritt 3 in einen Computer eingespeist oder stehen nach der Digitalisierung beim Computer bereits zur Verfügung. Mit der Digitalisierung der einzelnen Bereiche werden auch die Eigenschaften der Bereiche mit an den Computer übergeben.The digital data are fed into a computer in step 3 or are already available on the computer after digitization. With the digitization of the individual areas, the properties of the areas are also transferred to the computer.

In einem Schritt 4 sucht der Computer dann für alle vorgegebenen Bereiche nach Mustern, die die geforderten Eigenschaften erfüllen. Die Muster zeichnen sich insbesondere durch ihre Legungsdaten aus. Auch die jeweils vorgegebenen Spannungen der Fäden beim Zuführen oder der Wirkware beim Abziehen beeinflussen die Muster und können dementsprechend mit in Betracht gezogen werden.In a step 4, the computer then searches for patterns for all specified areas that meet the required properties. The patterns are particularly characterized by their laying data. The specified tensions of the threads during feeding or of the knitted fabric during removal also influence the pattern and can accordingly be taken into account.

In der Datenbank sind zum einen Bilddaten abgespeichert, mit denen die entsprechenden Muster der Bereiche optisch wiedergegeben werden können. Zum anderen sind auch die Steuerdaten abgespeichert, mit denen die entsprechenden Muster erzeugt werden. Der Computer stellt also in einem Schritt 5 die Bilddaten bereit, die im Folgenden als "Soll-Daten" bezeichnet werden. Gleichzeitig stellt er in einem Schritt 6 die Steuerdaten für die Kettenwirkmaschine zur Verfügung.On the one hand, image data are stored in the database with which the corresponding patterns of the areas can be reproduced optically. On the other hand, the control data with which the corresponding patterns are generated are also stored. The computer thus provides the image data in a step 5, which are referred to below as "target data" are designated. At the same time, in a step 6, it provides the control data for the warp knitting machine.

In einem Schritt 7 werden die Soll-Bilddaten dem Musterdesigner angezeigt. Der Musterdesigner hat hier sozusagen erstmals die Möglichkeit, zu überprüfen, ob die Zusammenstellung der Muster zu dem von ihm entworfenen Stoff seinen Vorstellungen entspricht. Mit dem Anzeigen der Muster kann man auch anzeigen lassen, zu welchem Grad die aufgefundenen Muster die Eigenschaften erfüllen.In a step 7, the target image data are displayed to the pattern designer. For the first time, the pattern designer has the opportunity to check whether the composition of the patterns for the fabric he has designed corresponds to his ideas. By displaying the patterns, you can also display the degree to which the patterns found meet the properties.

Dies ist insbesondere dann von Vorteil, wenn es für einen oder mehrere Bereiche eine Mehrzahl von möglichen Mustern gibt. Dieser Fall kann beispielsweise dann auftreten, wenn es mehrere Muster gibt, die alle die gewünschten Eigenschaften oder Eigenschaftskombinationen erfüllen. Der Fall kann auch auftreten, wenn es kein Muster gibt, das alle Eigenschaften oder Eigenschaftskombinationen gleichzeitig erfüllt. In jedem Fall hat der Musterdesigner dann in einem Schritt 8 die Möglichkeit, durch ein Auswahlmittel 8a, beispielsweise einen Mauszeiger oder eine Tastatur, ein bestimmtes Muster auszuwählen, das seiner Auffassung nach am besten zu dem von ihm entworfenen Stoff passt. Gleichzeitig mit der Auswahl des Musters werden in einem Schritt 9 auch die entsprechenden Steuerdaten ausgewählt.This is particularly advantageous when there are a plurality of possible patterns for one or more areas. This case can occur, for example, when there are several patterns which all meet the desired properties or property combinations. The case can also occur when there is no pattern that satisfies all properties or property combinations at the same time. In any case, the pattern designer then has the option in a step 8 of using a selection means 8a, for example a mouse pointer or a keyboard, to select a specific pattern which, in his opinion, best fits the fabric he has designed. Simultaneously with the selection of the pattern, the corresponding control data are also selected in a step 9.

Der Computer überprüft dann in einem Schritt 10, ob die Steuerdaten in der vorgegebenen Weise realisierbar sind, also maschinentechnisch zueinander passen. In manchen Fällen kann es allerdings vorkommen, dass durch die Kombination von Mustern benachbarter Bereiche in den Fäden unzulässig hohe Spannungen auftreten, die die Fertigung des Stoffs erschweren oder sogar unmöglich machen können. Andere Fehlermöglichkeiten können beispielsweise dann auftreten, wenn Bereiche, die einander benachbart sind, oder jedenfalls in der Nähe zu einander angeordnet sind, nicht durch Versatzbewegungen von Legebarren erzeugt werden können, weil sie sich in unzulässiger Weise gegenseitig negativ beeinflussen. In diesem Fall kann der Computer in einem Schritt 11 eine Fehlermeldung ausgeben und gleichzeitig anzeigen, welche Bereiche von dem Fehler betroffen sind.In a step 10, the computer then checks whether the control data can be implemented in the specified manner, that is to say whether they match one another in terms of machine technology. In some cases, however, the combination of patterns from adjacent areas can result in inadmissibly high tensions in the threads, which make it difficult or even impossible to manufacture the fabric. Other possible errors can occur, for example, when areas that are adjacent to one another, or at least are arranged in the vicinity of one another, fail to pass Displacement movements of guide bars can be generated because they influence each other negatively in an impermissible manner. In this case, the computer can output an error message in a step 11 and at the same time display which areas are affected by the error.

Der Musterdesigner muss dann nicht zum Schritt 1 zurückgehen, und den gesamten Stoff neu gestalten. Es reicht vielmehr aus, wenn er in einem Schritt 12 für die problematischen Bereiche eine Fehlerkorrektur vornimmt. Eine derartige Fehlerkorrektur kann beispielsweise darin bestehen, dass die entsprechenden problembehafteten Bereiche des Stoffs in der Ebene des Stoffs etwas gedreht oder gekippt werden. Unter einem "Drehen" soll hierbei eine Rotation des Musters um eine Achse verstanden werden, die auf dem Stoff senkrecht steht. Beim "Kippen" wird hingegen eine parallelogrammartige Verschiebung des Musters vorgenommen. In beiden Bereichen ergibt sich vielfach keine nennenswerte optische Änderung, wenn der entsprechende Korrekturwinkel klein ist.The pattern designer does not then have to go back to step 1 and redesign the entire fabric. Rather, it is sufficient if he corrects errors in a step 12 for the problematic areas. Such an error correction can for example consist in the fact that the corresponding problematic areas of the material are rotated or tilted somewhat in the plane of the material. A "turning" is to be understood here as a rotation of the pattern about an axis which is perpendicular to the fabric. When "tilting", however, a parallelogram-like displacement of the pattern is carried out. In many cases, there is no noticeable optical change in both areas if the corresponding correction angle is small.

Das geänderte Muster wird dann wieder im Schritt 10 überprüft. Wenn die Überprüfung keinen Fehler mehr ergibt, werden in einem Schritt 13 die Steuerdaten zur Kettenwirkmaschine gesandt und die Produktion kann beginnen.The changed pattern is then checked again in step 10. If the check no longer shows any errors, the control data are sent to the warp knitting machine in a step 13 and production can begin.

In einem Schritt 14 nimmt eine Kamera den produzierten Stoff auf und erzeugt daraus Ist-Bilddaten. Die Ist-Bilddaten können entweder unmittelbar an den Musterdesigner zurückgesandt werden, der sie auf einem entsprechenden Anzeigegerät, beispielsweise einem Bildschirm, anschauen kann, um zu überprüfen, ob der erzeugte Stoff seinen Vorstellungen entspricht. Man kann jedoch die erzeugten Ist-Bilddaten in einem Schritt 15 auch mit den im Schritt 5 erzeugten Soll-Bilddaten vergleichen, wozu man ebenfalls zweckmäßigerweise einen Computer verwendet. Wenn sich eine Übereinstimmung in einem ausreichenden Maße ergibt, kann die Produktion fortgesetzt werden. Wenn sich unzulässige Abweichungen ergeben, wird die Produktion angehalten und man kann einen Fehler suchen.In a step 14, a camera records the fabric produced and uses it to generate actual image data. The actual image data can either be sent back directly to the pattern designer, who can view them on a corresponding display device, for example a screen, in order to check whether the fabric produced corresponds to his ideas. However, the actual image data generated can also be compared in a step 15 with the desired image data generated in step 5, for which purpose a computer is also expediently used. If there is a sufficient match, production can be continued. If there are impermissible deviations, production is stopped and an error can be searched for.

Claims (10)

  1. Method for the generation of control data for a warp knitting machine, with which properties of regions of a knitted fabric are defined, which properties can be influenced by the mode of operation of the warp knitting machine, image data for a pattern are provided, and the pattern can be displayed, wherein
    with the pattern the computer generates the control data relevant to the respective region,
    characterised in that,
    by means of the computer a search can be made for at least one pattern fulfilling the properties for each region to a predetermined degree.
  2. Method according to Claim 1,
    characterised in that,
    the degree to which the pattern fulfils the properties can be indicated with the pattern.
  3. Method according to Claim 1 or 2,
    characterised in that,
    if there is a plurality of possible patterns, a means of selection is actuated so as to select a specific pattern.
  4. Method according to one of the Claims 1 to 3,
    characterised in that,
    the computer generates an error message in the event of a combination of patterns that do not match up with each other in terms of the machine technology.
  5. Method according to Claim 4,
    characterised in that,
    the error message indicates at least one affected region.
  6. Method according to Claim 5,
    characterised in that,
    in accordance with an error message at least one of the affected regions is altered.
  7. Method according to Claim 6,
    characterised in that,
    the region that is to be altered is rotated, tilted, stretched, displaced, reduced or enlarged.
  8. Method according to one of the Claims 1 to 7,
    characterised in that,
    with the aid of the control data, a list of the raw materials required can be created.
  9. Method for the generation of a knitted fabric with control data, which are generated according to one of the Claims 1 to 8,
    characterised in that,
    the knitted fabric is recorded by means of a camera, and thus actual image data is generated, and the actual image data is compared with design-standard image data, which the computer has provided together with the pattern.
  10. Method according to Claim 9,
    characterised in that,
    the comparison between the actual image data and the design-standard image data is undertaken by means of a computer.
EP17154114.7A 2017-02-01 2017-02-01 Method for producing control data of a warp knitting machine Active EP3358059B1 (en)

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EP17154114.7A EP3358059B1 (en) 2017-02-01 2017-02-01 Method for producing control data of a warp knitting machine
CN201710195916.0A CN108374233A (en) 2017-02-01 2017-03-29 Method for the control data for generating tricot machine

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Publication number Priority date Publication date Assignee Title
GB2037822B (en) * 1978-12-07 1983-04-27 Gatehouse D W Automatic positioning of machine elements
US5557527A (en) * 1993-08-31 1996-09-17 Shima Seiki Manufacturing Ltd. Knit design system and a method for designing knit fabrics
JP4808596B2 (en) * 2006-11-21 2011-11-02 デジタルファッション株式会社 Knitting structure model generation program, knitting structure model generation device, and knitting structure model generation method
CN101802283B (en) * 2007-09-10 2012-06-13 株式会社岛精机制作所 Device and method for debugging knit design
EP2505705B1 (en) * 2009-11-26 2016-07-27 Shima Seiki Mfg. Ltd. Knit design device and design method
JP5732321B2 (en) * 2011-06-08 2015-06-10 株式会社島精機製作所 Knit design method and apparatus
JP6120792B2 (en) * 2014-03-18 2017-04-26 株式会社島精機製作所 Knit design system and knit design method
CN106294912A (en) * 2015-06-05 2017-01-04 内蒙古工业大学 Sweater knitted technique network aided design system
CN105063881B (en) * 2015-08-07 2017-08-11 浙江彩蝶实业有限公司 A kind of tricot machine parking detection means

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CN108374233A (en) 2018-08-07

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