EP3702504B1 - Warp knitting machine, sliding-tongue needle assembly and method for producing an elastic warp knit fabric - Google Patents

Warp knitting machine, sliding-tongue needle assembly and method for producing an elastic warp knit fabric Download PDF

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Publication number
EP3702504B1
EP3702504B1 EP20183097.3A EP20183097A EP3702504B1 EP 3702504 B1 EP3702504 B1 EP 3702504B1 EP 20183097 A EP20183097 A EP 20183097A EP 3702504 B1 EP3702504 B1 EP 3702504B1
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EP
European Patent Office
Prior art keywords
needle
slide
slider
circumference
compound
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EP20183097.3A
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German (de)
French (fr)
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EP3702504A2 (en
EP3702504A3 (en
Inventor
Klaus Brandl
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Karl Mayer Stoll R&D GmbH
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Karl Mayer Stoll R&D GmbH
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Application filed by Karl Mayer Stoll R&D GmbH filed Critical Karl Mayer Stoll R&D GmbH
Priority to EP20183097.3A priority Critical patent/EP3702504B1/en
Publication of EP3702504A2 publication Critical patent/EP3702504A2/en
Publication of EP3702504A3 publication Critical patent/EP3702504A3/en
Priority to CN202110102279.4A priority patent/CN113862896B/en
Priority to TW110118678A priority patent/TWI821672B/en
Priority to KR1020210085665A priority patent/KR102584594B1/en
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Publication of EP3702504B1 publication Critical patent/EP3702504B1/en
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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B27/00—Details of, or auxiliary devices incorporated in, warp knitting machines, restricted to machines of this kind
    • D04B27/06—Needle bars; Sinker bars
    • 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
    • D04B35/02—Knitting tools or instruments not provided for in group D04B15/00 or D04B27/00
    • 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
    • D04B21/14—Fabrics characterised by the incorporation by knitting, in one or more thread, fleece, or fabric layers, of reinforcing, binding, or decorative threads; Fabrics incorporating small auxiliary elements, e.g. for decorative purposes
    • D04B21/18—Fabrics characterised by the incorporation by knitting, in one or more thread, fleece, or fabric layers, of reinforcing, binding, or decorative threads; Fabrics incorporating small auxiliary elements, e.g. for decorative purposes incorporating elastic threads
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B23/00—Flat warp knitting machines
    • D04B23/06—Flat warp knitting machines for producing fabrics consisting of, or incorporating, elastic threads
    • 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
    • D04B35/02—Knitting tools or instruments not provided for in group D04B15/00 or D04B27/00
    • D04B35/06—Sliding-tongue needles

Definitions

  • the present invention relates to a compound needle arrangement of a warp knitting machine with a compound needle stroke of at most 10 mm, the compound needle arrangement having a compound needle with a needle head and a needle shank and a compound interacting with the compound needle.
  • the invention relates to a warp knitting machine with a multiplicity of such compound needle arrangements.
  • the invention relates to a method for producing an elastic knitted fabric, in which stitches of the knitted fabric are formed using compound needle arrangements, each of which has a slider and a compound needle with a needle head and a needle shaft, the compound needles having a maximum stroke of 10 mm .
  • the warp knitting machine includes a compound needle assembly including a compound and a compound needle with a needle head and a needle shank.
  • DE 22 45 731 A1 shows a needle for knitting and warp-knitting machines, which can be moved back and forth in a guide channel of a bar.
  • DE 196 21 382 A1 shows parts of a warp knitting machine, namely a crochet hook, which can be viewed as a knitting needle.
  • DE 30 08 276 A1 shows a warp knitting machine with the goods being taken off over a fixed knock-over edge.
  • the warp knitting machine has compound needles and sliders.
  • DE 25 37 502 A1 shows a compound needle arrangement for stitch-forming textile machines, such as warp knitting machines, with a compound needle having a needle shank and a slider.
  • the needle shank In a sliding area in which the stitch is located at the end of a compound needle stroke, the needle shank has a height which is less than in the area where the compound needle covers the needle head.
  • a warp knitting machine with a compound needle system i.e. with a large number of compound needle arrangements, is characterized by a particularly high production output. You can create more than 4,000 rows of stitches per minute. However, such high working speeds lead to problems, which manifest themselves in particular in the supplied warp threads oscillating. This can result in losses in the quality of the knitted fabric. This is especially true when you want to produce an elastic knitted fabric, in which the warp threads supplied must have a certain elasticity.
  • the object of the invention is to enable high productivity of the warp knitting machine with good quality of the knitted fabric.
  • the compound needle forms a knitting needle or working needle.
  • a stitch has been formed, it is on the needle shaft.
  • the compound needle then rises so that the catching space of the needle head can in turn grab a warp thread and pull it through the stitch that has been formed.
  • the slider closes the catch area of the needle head.
  • the maximum circumference of the assembly of needle head and slider is not greater than the corresponding circumference of the needle shank. If you can prevent the stitch from expanding when the needle head with slider moves into the closed position, then you can in increase the thread tension during entry within certain limits, which in turn leads to a better quality of the knitted fabric.
  • the circumference of the needle shank at the end of the sliding area is the same as the largest circumference of the needle head and slider assembly in the closed position.
  • the stitch is therefore neither expanded nor does it have to contract when the needle head with slider is moved through the stitch in the closed position.
  • the needle shank has a greater thickness than the needle head at the end of the sliding area.
  • the thickness is the direction in which the individual compound needles are arranged next to one another in a corresponding needle bar.
  • the circumference of the entirety of compound needle and slider in the closed position varies by a maximum of 15% from the needle head to the end of the sliding area.
  • the circumferential length of the combined compound needle and slider does not change substantially. Accordingly, the mesh also retains its original size and is neither increased nor decreased significantly.
  • the needle shaft is cylindrical at least at the end of the sliding area. There is a transition between the needle head and the end of the sliding area. A cylindrical configuration of the needle shank results in an approximately circular stitch, which can then be easily knocked off.
  • the compound needle arrangement preferably has a gauge of E32 to E44. In other words, there are 32 to 44 compound needle assemblies per inch (25.4 mm) wide. A very fine knitted fabric can thus be produced, which is particularly advantageous in the case of elastic fabrics, such as are used for swimwear or the like.
  • the invention is achieved by a warp knitting machine with such a compound needle arrangement.
  • the circumference of the needle shank at the end of the sliding area is the same as the largest circumference of the needle head and slider assembly in the closed position.
  • the needle shank has a greater thickness than the needle head at the end of the sliding area. This is an easy way to increase the circumferential length of the needle shaft.
  • the circumference of the assembly of compound needle and slider in the closed position varies by a maximum of 15% from the needle head to the end of the sliding area.
  • the object is achieved with a method of the type mentioned at the outset in that the stitches are prevented from widening when the stitches are knocked off by selecting the circumference of the needle shaft in a sliding area in which the stitch is located at the end of a compound needle stroke to be at least as large , such as the parallel largest circumference of the assembly of needle head and slider in the closed position.
  • the knitted fabric is of good quality. At the same time, however, you can use a relatively short stroke of the compound needles, which has a positive effect on the possible working speed of the warp knitting machine.
  • the circumference of the needle shank at the end of the sliding area is the same as the largest circumference of the assembly of needle head and slider in the closed position.
  • the stitch does not have to change when it is knocked off. It doesn't need to increase or decrease.
  • the needle shank has a greater thickness than the needle head at the end of the sliding area. This is an easy way to equip the needle with a correspondingly large circumference at the end of the sliding area.
  • the circumference of the assembly of compound needle and slider in the closed position varies by a maximum of 15% from the needle head to the end of the sliding area.
  • the size of the stitch can then be left unchanged when knocking off, ie when the compound needle moves through the stitch together with the slider.
  • the warp knitting machine 1 shown only schematically has a knitting needle bar 2 to which a plurality of compound needles 3 is attached.
  • the compound needles 3 form knitting needles in connection with the Figures 2 to 4 be described in more detail.
  • the warp knitting machine 1 has a plurality of guide bars 4 to which thread guides 5 are attached.
  • the thread guides 5 can, as shown in Figures 2 and 3 is shown, be designed as guide needles 6, 7 or guide needles.
  • the warp knitting machine 1 can have two guide bars 4, for example.
  • the compound needles 3 have a needle head 8 which surrounds a catching space 9 .
  • This catch space 9 is in 2 shown position open so that the compound needle 3 can take one or more of the thread guides 6, 7 guided threads.
  • the head 8 is arranged at the end of a needle shank 10 .
  • a slider 11 is provided, which is arranged on a slider bar 12 .
  • the slide 11 closes the catch space 9.
  • the slides 11 are arranged on a slide bar, not shown in detail.
  • the warp knitting machine 1 also has a sinker bar 13 with a multiplicity of sinkers 14 .
  • the sinkers 14 delimit a sliding area in which the stitch can slide on the compound needle 3 .
  • the sinkers 14 help on the other hand to strip the stitch from the compound needle 3.
  • FIG 4 shows one of the compound needles 3 with a slider 11 shown schematically. Also shown is an end 15 of the sliding area. Up to this position, as mentioned above, the stitch can slide on the needle shank 10 when the compound needle 3 rises.
  • the warp knitting machine 1 has a relatively small stroke of the compound needle 3. This is a maximum of 10 mm. Accordingly, the length of the sliding area between the needle head 8 and the end 15 of the sliding area is of a similar order of magnitude.
  • the entirety of the needle head 8 and the slide 11 has one certain extent.
  • the compound needle 3 is now dimensioned in such a way that it has a correspondingly large circumference at the end 15 of the sliding area.
  • the stitch can therefore not be smaller than corresponds to the circumference of the compound needle 3 at the end 15 of the sliding area. This in turn means that the stitch does not have to widen when the compound needle 3 moves through the stitch with the slider 11 in the closed position. Accordingly, high working speeds can be achieved even with a short stroke of the compound needles of a maximum of 10 mm, because no time is required to widen the stitch. In addition, the lack of widening of the stitch has a positive effect on the quality of the knitted fabric.
  • the correspondingly large circumference at the end 15 of the sliding area of the compound needle 3 can be achieved, for example, in that the compound needle 3 has a greater thickness at the end 15 of the sliding area.
  • the thickness is the extent of the compound needle 3 in the direction in which the compound needles 3 are arranged next to one another on the knitting needle bar 2 .
  • the scope of the entirety of compound needle 3 and slider 11 in the closed position varies by a maximum of 15% from the needle head 8 to the end 15 of the sliding area.
  • the compound needle 3 has a cylindrical shape at least at the end 15 of the sliding area.
  • Very fine knitted goods can be produced with such a warp knitting machine.
  • the cylindrical design of the needle shaft 10 allows the stitch to slide over the needle head 8 with the slider 11 in the closed position without widening for knocking over.
  • This geometry of the upper preferably achieves a tension ratio in the stitch formation process that contributes to increasing the quality of the knitted fabric.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
  • Knitting Of Fabric (AREA)

Description

Die vorliegende Erfindung betrifft eine Schiebernadelanordnung einer Kettenwirkmaschine mit einem Schiebernadelhub von maximal 10 mm, wobei die Schiebernadelanordnung eine Schiebernadel mit einem Nadelkopf und einem Nadelschaft und einen mit der Schiebernadel zusammenwirkenden Schieber aufweist.The present invention relates to a compound needle arrangement of a warp knitting machine with a compound needle stroke of at most 10 mm, the compound needle arrangement having a compound needle with a needle head and a needle shank and a compound interacting with the compound needle.

Weiterhin betrifft die Erfindung eine Kettenwirkmaschine mit einer Vielzahl derartiger Schiebernadelanordnungen.Furthermore, the invention relates to a warp knitting machine with a multiplicity of such compound needle arrangements.

Schließlich betrifft die Erfindung ein Verfahren zum Herstellen einer elastischen Wirkware, bei dem man unter Verwendung von Schiebernadelanordnungen, die jeweils einen Schieber und eine Schiebernadel mit einem Nadelkopf und einem Nadelschaft aufweisen, Maschen der Wirkware bildet, wobei die Schiebernadeln einen Hub von maximal 10 mm aufweisen.Finally, the invention relates to a method for producing an elastic knitted fabric, in which stitches of the knitted fabric are formed using compound needle arrangements, each of which has a slider and a compound needle with a needle head and a needle shaft, the compound needles having a maximum stroke of 10 mm .

DE 40 24 132 C1 zeigt eine Kettenwirkmaschine zur Herstellung einer Kettenwirkware. Die Kettenwirkmaschine weist eine Schiebernadelanordnung auf, die einen Schieber und eine Schiebernadel mit einem Nadelkopf und einem Nadelschaft aufweist. DE 40 24 132 C1 shows a warp knitting machine for producing a warp knitted fabric. The warp knitting machine includes a compound needle assembly including a compound and a compound needle with a needle head and a needle shank.

DE 22 45 731 A1 zeigt eine Nadel für Strick- und Wirkmaschinen, die in einem Führungskanal einer Barre hin und her bewegbar ist. DE 22 45 731 A1 shows a needle for knitting and warp-knitting machines, which can be moved back and forth in a guide channel of a bar.

DE 196 21 382 A1 zeigt Teile einer Kettenwirkmaschine, nämlich eine Häkelnadel, die man als Wirknadel ansehen kann. DE 196 21 382 A1 shows parts of a warp knitting machine, namely a crochet hook, which can be viewed as a knitting needle.

DE 30 08 276 A1 zeigt eine Kettenwirkmaschine mit Abzug der Ware über eine feststehende Abschlagkante. Die Kettenwirkmaschine weist Schiebernadeln und Schieber auf. DE 30 08 276 A1 shows a warp knitting machine with the goods being taken off over a fixed knock-over edge. The warp knitting machine has compound needles and sliders.

DE 25 37 502 A1 zeigt eine Schiebernadelanordnung für maschenbildende Textilmaschinen, wie Kettenwirkmaschinen, mit einer Schiebernadel, die einen Nadelschaft und einen Schieber aufweist. Der Nadelschaft weist in einem Gleitbereich, in dem sich die Masche am Ende eines Schiebernadelhubs befindet, eine Höhe auf, die geringer ist als in dem Bereich, wo die Schiebernadel den Nadelkopf überdeckt. DE 25 37 502 A1 shows a compound needle arrangement for stitch-forming textile machines, such as warp knitting machines, with a compound needle having a needle shank and a slider. In a sliding area in which the stitch is located at the end of a compound needle stroke, the needle shank has a height which is less than in the area where the compound needle covers the needle head.

DE 29 19 344 A1 zeigt eine weitere Kettenwirkmaschine mit Schiebernadeln. DE 29 19 344 A1 shows another warp knitting machine with compound needles.

Eine Kettenwirkmaschine mit einem Schiebernadelsystem, d.h. mit einer Vielzahl von Schiebernadelanordnungen, zeichnet sich durch eine besonders hohe Produktionsleistung aus. Man kann mehr als 4.000 Maschenreihen pro Minute erzeugen. Allerdings führen derartig hohe Arbeitsgeschwindigkeiten zu Problemen, die sich insbesondere in einem Aufschwingen der zugeführten Kettfäden äußern. Daraus können sich Qualitätseinbußen der Wirkware ergeben. Dies gilt insbesondere dann, wenn man eine elastische Wirkware herstellen möchte, bei der die zugeführten Kettfäden eine gewisse Elastizität aufweisen müssen.A warp knitting machine with a compound needle system, i.e. with a large number of compound needle arrangements, is characterized by a particularly high production output. You can create more than 4,000 rows of stitches per minute. However, such high working speeds lead to problems, which manifest themselves in particular in the supplied warp threads oscillating. This can result in losses in the quality of the knitted fabric. This is especially true when you want to produce an elastic knitted fabric, in which the warp threads supplied must have a certain elasticity.

Ein Teil der Probleme lässt sich durch eine Optimierung der Bewegungen der Wirkwerkzeuge vermindern. In der Regel ist damit eine Reduktion derSome of the problems can be reduced by optimizing the movements of the knitting tools. As a rule, this means a reduction in the

Bewegungsgrößen und -zeiten der Wirkwerkzeuge in Bezug zueinander verbunden. Allerdings führt dies oft zu Einschränkungen im möglichen Produktspektrum der erzeugten Wirkware.Movement sizes and times of the knitting tools connected in relation to each other. However, this often leads to limitations in the possible product range of the knitted fabric produced.

Der Erfindung liegt die Aufgabe zugrunde, eine hohe Produktivität der Kettenwirkmaschine bei guter Qualität der Wirkware zu ermöglichen.The object of the invention is to enable high productivity of the warp knitting machine with good quality of the knitted fabric.

Diese Aufgabe wird bei einer Schiebernadelanordnung mit den Merkmalen des Anspruchs 1 gelöst.This object is achieved in a compound needle arrangement with the features of claim 1.

Die Schiebernadel bildet eine Wirknadel oder Arbeitsnadel. Wenn eine Masche gebildet worden ist, dann befindet sie sich auf dem Nadelschaft. Danach steigt die Schiebernadel, damit der Fangraum des Nadelkopfes wiederum einen Kettfaden ergreifen und durch die gebildete Masche hindurchziehen kann. Bei diesem Vorgang schließt der Schieber den Fangraum des Nadelkopfes. Durch die Verwendung eines relativ "dicken" Nadelschaftes kann man nun erreichen, dass die Masche nicht mehr aufgeweitet werden muss, wenn sich der Nadelkopf zusammen mit dem Schieber, der den Fangraum geschlossen hat, durch die Masche hindurchbewegt. Die "Gesamtheit von Nadelkopf und Schieber" hat also keinen größeren Umfang als der Nadelschaft, auf dem die Masche gleitet. Dies gilt auch dann, wenn der Schieber in Schließstellung einen kleinen Abstand zum Nadelkopf aufweist. Auch in diesem Fall ist der größte Umfang der Gesamtheit von Nadelkopf und Schieber nicht größer als der entsprechende Umfang des Nadelschaftes. Wenn man verhindern kann, dass sich die Masche bei der Bewegung des Nadelkopfes mit Schieber in Schließstellung aufweitet, dann kann man in gewissen Grenzen die Fadenspannung beim Einlauf erhöhen, was wiederum zu einer besseren Qualität der Wirkware führt.The compound needle forms a knitting needle or working needle. When a stitch has been formed, it is on the needle shaft. The compound needle then rises so that the catching space of the needle head can in turn grab a warp thread and pull it through the stitch that has been formed. During this process, the slider closes the catch area of the needle head. By using a relatively “thick” needle shank, it is now possible to ensure that the stitch no longer has to be widened when the needle head moves through the stitch together with the slide that has closed the catching space. The "totality of needle head and slider" is therefore no larger than the needle shank on which the stitch slides. This also applies when the slide is a small distance from the needle head in the closed position. In this case, too, the maximum circumference of the assembly of needle head and slider is not greater than the corresponding circumference of the needle shank. If you can prevent the stitch from expanding when the needle head with slider moves into the closed position, then you can in increase the thread tension during entry within certain limits, which in turn leads to a better quality of the knitted fabric.

Vorzugsweise ist der Umfang des Nadelschaftes am Ende des Gleitbereichs genauso groß wie der größte Umfang der Gesamtheit von Nadelkopf und Schieber in Schließstellung. Die Masche wird also weder aufgeweitet noch muss sie sich zusammenziehen, wenn der Nadelkopf mit Schieber in Schließstellung durch die Masche hindurchbewegt wird.Preferably, the circumference of the needle shank at the end of the sliding area is the same as the largest circumference of the needle head and slider assembly in the closed position. The stitch is therefore neither expanded nor does it have to contract when the needle head with slider is moved through the stitch in the closed position.

Vorzugsweise weist der Nadelschaft am Ende des Gleitbereichs eine größere Dicke als der Nadelkopf auf. Die Dicke ist dabei die Richtung, in der die einzelnen Schiebernadeln in einer entsprechenden Nadelbarre nebeneinander angeordnet sind. Durch die Vergrößerung der Dicke lässt sich auf einfache Weise die Umfangslänge entsprechend vergrößern.Preferably, the needle shank has a greater thickness than the needle head at the end of the sliding area. The thickness is the direction in which the individual compound needles are arranged next to one another in a corresponding needle bar. By increasing the thickness, the circumferential length can be correspondingly increased in a simple manner.

Bevorzugterweise variiert der Umfang der Gesamtheit aus Schiebernadel und Schieber in Schließstellung vom Nadelkopf zum Ende des Gleitbereichs um maximal 15 %. Wenn die Schiebernadel mit dem Schieber durch die Masche hindurchbewegt wird, ändert sich die Umfangslänge der Kombination aus Schiebernadel und Schieber praktisch nicht. Dementsprechend behält auch die Masche ihre ursprüngliche Größe bei und wird weder nennenswert vergrößert noch nennenswert verkleinert.Preferably, the circumference of the entirety of compound needle and slider in the closed position varies by a maximum of 15% from the needle head to the end of the sliding area. When the compound needle is moved through the stitch with the slider, the circumferential length of the combined compound needle and slider does not change substantially. Accordingly, the mesh also retains its original size and is neither increased nor decreased significantly.

Der Nadelschaft ist zumindest am Ende des Gleitbereichs zylinderförmig ausgebildet. Zwischen dem Nadelkopf und dem Ende des Gleitbereichs ergibt sich ein Übergang. Eine zylinderförmige Ausbildung des Nadelschaftes ergibt eine annähernd kreislinienförmige Masche, die sich dann leicht abschlagen lässt. Vorzugsweise weist die Schiebernadelanordnung eine Feinheit von E32 bis E44 auf. Mit anderen Worten sind auf einem Zoll (25,4 mm) Breite 32 bis 44 Schiebernadelanordnungen vorgesehen. Damit lässt sich eine sehr feine Wirkware erzeugen, was insbesondere bei Elastikware von Vorteil ist, wie sie beispielsweise für Badebekleidung oder dergleichen verwendet wird.The needle shaft is cylindrical at least at the end of the sliding area. There is a transition between the needle head and the end of the sliding area. A cylindrical configuration of the needle shank results in an approximately circular stitch, which can then be easily knocked off. The compound needle arrangement preferably has a gauge of E32 to E44. In other words, there are 32 to 44 compound needle assemblies per inch (25.4 mm) wide. A very fine knitted fabric can thus be produced, which is particularly advantageous in the case of elastic fabrics, such as are used for swimwear or the like.

Die Erfindung wird durch eine Kettenwirkmaschine mit einer derartigen Schiebernadelanordnung gelöst.The invention is achieved by a warp knitting machine with such a compound needle arrangement.

Wie oben im Zusammenhang mit der Schiebernadelanordnung erläutert, kann man dadurch vermeiden, dass die Masche aufgeweitet werden muss, wenn sich der Nadelkopf gemeinsam mit dem Schieber durch die Masche hindurchbewegt. Dementsprechend lässt sich eine gute Qualität der Wirkware erreichen und trotzdem eine hohe Arbeitsgeschwindigkeit. Das Vermeiden der Aufweitung der Masche ist vor allem dann von Vorteil, wenn aufgrund des kurzen Hubs der Schiebernadel zum Aufweiten praktisch keine Zeit zur Verfügung steht.As explained above in connection with the compound needle arrangement, this avoids having to widen the stitch when the needle head moves through the stitch together with the slider. Accordingly, a good quality of the knitted fabric can be achieved and still a high working speed. Avoiding the widening of the stitch is particularly advantageous when there is practically no time available for widening due to the short stroke of the compound needle.

Vorzugsweise ist der Umfang des Nadelschaftes am Ende des Gleitbereichs genauso groß wie der größte Umfang der Gesamtheit von Nadelkopf und Schieber in Schließstellung. Beim Abschlagen der Masche, also wenn sich die Schiebernadel mit dem Schieber durch die Masche hindurchbewegt, ergibt sich dann keine Änderung der Umfangslänge und die Masche muss sich weder vergrößern noch verkleinern.Preferably, the circumference of the needle shank at the end of the sliding area is the same as the largest circumference of the needle head and slider assembly in the closed position. When knocking off the stitch, i.e. when the compound needle moves through the stitch with the slider, there is no change in the circumferential length and the stitch does not have to increase or decrease.

Vorzugsweise weist der Nadelschaft am Ende des Gleitbereichs eine größere Dicke als der Nadelkopf auf. Dies ist eine einfache Möglichkeit, um die Umfangslänge des Nadelschaftes zu vergrößern.Preferably, the needle shank has a greater thickness than the needle head at the end of the sliding area. This is an easy way to increase the circumferential length of the needle shaft.

Vorzugsweise variiert der Umfang der Gesamtheit aus Schiebernadel und Schieber in Schließstellung vom Nadelkopf zum Ende des Gleitbereichs um maximal 15 %. Beim Abschlagen der Masche, also wenn die Schiebernadel mit dem Schieber durch die Masche hindurchbewegt wird, ergeben sich dann praktisch keine Änderungen in der Umfangslänge.Preferably, the circumference of the assembly of compound needle and slider in the closed position varies by a maximum of 15% from the needle head to the end of the sliding area. When knocking off the stitch, i.e. when the needle with the Slider is moved through the mesh, there are then practically no changes in the circumferential length.

Die Aufgabe wird bei einem Verfahren der eingangs genannten Art dadurch gelöst, dass man beim Abschlagen der Maschen eine Aufweitung der Maschen verhindert, indem man den Umfang des Nadelschafts in einem Gleitbereich, in dem sich die Masche am Ende eines Schiebernadelhubs befindet, mindestens so groß wählt, wie den dazu parallelen größten Umfang der Gesamtheit aus Nadelkopf und Schieber in Schließstellung.The object is achieved with a method of the type mentioned at the outset in that the stitches are prevented from widening when the stitches are knocked off by selecting the circumference of the needle shaft in a sliding area in which the stitch is located at the end of a compound needle stroke to be at least as large , such as the parallel largest circumference of the assembly of needle head and slider in the closed position.

Wenn man das Aufweiten der Maschen verhindert, ergibt sich eine gute Qualität der Wirkware. Gleichzeitig kann man aber einen relativ kurzen Hub der Schiebernadeln verwenden, was sich positiv auf die mögliche Arbeitsgeschwindigkeit der Kettenwirkmaschine auswirkt.If the stitches are prevented from splaying, the knitted fabric is of good quality. At the same time, however, you can use a relatively short stroke of the compound needles, which has a positive effect on the possible working speed of the warp knitting machine.

Vorzugsweise ist der Umfang des Nadelschafts am Ende des Gleitbereichs genauso groß wie der größte Umfang der Gesamtheit von Nadelkopf und Schieber in Schließstellung. Die Masche muss sich also beim Abschlagen nicht verändern. Sie muss sich weder vergrößern noch verkleinern.Preferably, the circumference of the needle shank at the end of the sliding area is the same as the largest circumference of the assembly of needle head and slider in the closed position. The stitch does not have to change when it is knocked off. It doesn't need to increase or decrease.

Vorzugsweise weist der Nadelschaft am Ende des Gleitbereichs eine größere Dicke als der Nadelkopf auf. Dies ist eine einfache Möglichkeit, um die Nadel mit einem entsprechend großen Umfang am Ende des Gleitbereichs auszurüsten.Preferably, the needle shank has a greater thickness than the needle head at the end of the sliding area. This is an easy way to equip the needle with a correspondingly large circumference at the end of the sliding area.

Vorzugsweise variiert der Umfang der Gesamtheit aus Schiebernadel und Schieber in Schließstellung vom Nadelkopf zum Ende des Gleitbereichs um maximal 15 %. Die Größe der Masche kann dann beim Abschlagen, also wenn sich die Schiebernadel gemeinsam mit dem Schieber durch die Masche hindurchbewegt, unverändert belassen werden.Preferably, the circumference of the assembly of compound needle and slider in the closed position varies by a maximum of 15% from the needle head to the end of the sliding area. The size of the stitch can then be left unchanged when knocking off, ie when the compound needle moves through the stitch together with the slider.

Vorzugsweise verwendet man eine Feinheit der Schiebernadelanordnung im Bereich von E32 bis E44. Man verwendet also 32 bis 44 Schiebernadeln auf einer Länge von 25,4 mm (= 1 Zoll).A gauge of the compound needle arrangement in the range from E32 to E44 is preferably used. So you use 32 to 44 compound needles over a length of 25.4 mm (= 1 inch).

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

Fig. 1
eine stark schematisierte Darstellung einer Kettenwirkmaschine,
Fig. 2
Wirkwerkzeuge der Kettenwirkmaschine in einer ersten Arbeitsstellung,
Fig. 3
die Wirkwerkzeuge der Kettenwirkmaschine in einer zweiten Arbeitsstellung, und
Fig. 4
eine schematische Darstellung einer Schiebernadel mit Schieber.
The invention is described below using a preferred exemplary embodiment in conjunction with the drawing. Show in it:
1
a highly schematic representation of a warp knitting machine,
2
Knitting tools of the warp knitting machine in a first working position,
3
the knitting tools of the warp knitting machine in a second working position, and
4
a schematic representation of a compound needle with slider.

Eine in Fig. 1 nur schematisch dargestellte Kettenwirkmaschine 1 weist eine Wirknadelbarre 2 auf, an der eine Vielzahl von Schiebernadeln 3 befestigt ist. Die Schiebernadeln 3 bilden Wirknadeln, die im Zusammenhang mit den Fig. 2 bis 4 näher beschrieben werden. Weiterhin weist die Kettenwirkmaschine 1 mehrere Legebarren 4 auf, an denen Fadenführer 5 befestigt sind. Die Fadenführer 5 können, wie dies in Fig. 2 und 3 dargestellt ist, als Legenadeln 6, 7 oder Lochnadeln ausgebildet sein.one inside 1 The warp knitting machine 1 shown only schematically has a knitting needle bar 2 to which a plurality of compound needles 3 is attached. The compound needles 3 form knitting needles in connection with the Figures 2 to 4 be described in more detail. Furthermore, the warp knitting machine 1 has a plurality of guide bars 4 to which thread guides 5 are attached. The thread guides 5 can, as shown in Figures 2 and 3 is shown, be designed as guide needles 6, 7 or guide needles.

Die Kettenwirkmaschine 1 kann im vorliegenden Fall beispielsweise zwei Legebarren 4 aufweisen.In the present case, the warp knitting machine 1 can have two guide bars 4, for example.

Die Schiebernadeln 3 weisen einen Nadelkopf 8 auf, der einen Fangraum 9 umgibt. Dieser Fangraum 9 ist in der in Fig. 2 dargestellten Position offen, damit die Schiebernadel 3 einen oder mehrere von den Fadenführern 6, 7 geführten Fäden ergreifen kann. Der Kopf 8 ist am Ende eines Nadelschafts 10 angeordnet.The compound needles 3 have a needle head 8 which surrounds a catching space 9 . This catch space 9 is in 2 shown position open so that the compound needle 3 can take one or more of the thread guides 6, 7 guided threads. The head 8 is arranged at the end of a needle shank 10 .

Wenn die Schiebernadel 3 weiterbewegt wird, um die in Fig. 3 dargestellte Position zu erreichen, dann muss sich der Nadelkopf durch eine nicht dargestellte Masche hindurchbewegen, die sich auf dem Nadelschaft 10 gebildet hat. Um zu verhindern, dass der Nadelkopf bzw. die Öffnung des Fangraums 9 mit der Masche verhakt, ist ein Schieber 11 vorgesehen, der an einer Schieberbarre 12 angeordnet ist. Der Schieber 11 verschließt den Fangraum 9. Die Schieber 11 sind an einer nicht näher dargestellten Schieberbarre angeordnet.When the compound needle 3 is further moved to the in 3 To reach the position shown, then the needle head must move through a stitch, not shown, that has formed on the needle shank 10. In order to prevent the needle head or the opening of the catching space 9 from getting caught in the stitch, a slider 11 is provided, which is arranged on a slider bar 12 . The slide 11 closes the catch space 9. The slides 11 are arranged on a slide bar, not shown in detail.

Die Kettenwirkmaschine 1 weist weiterhin eine Platinenbarre 13 mit einer Vielzahl von Platinen 14 auf. Die Platinen 14 begrenzen einerseits einen Gleitbereich, in dem die Masche auf der Schiebernadel 3 gleiten kann. Wenn sich die Schiebernadel 3 von der in Fig. 2 dargestellten Position in die in Fig. 3 dargestellte Position begibt, dann helfen die Platinen 14 andererseits, die Masche von der Schiebernadel 3 abzustreifen.The warp knitting machine 1 also has a sinker bar 13 with a multiplicity of sinkers 14 . On the one hand, the sinkers 14 delimit a sliding area in which the stitch can slide on the compound needle 3 . When the compound needle 3 moves away from the in 2 position shown in the in 3 shown position, then the sinkers 14 help on the other hand to strip the stitch from the compound needle 3.

Fig. 4 zeigt eine der Schiebernadeln 3 mit einem schematisch dargestellten Schieber 11. Eingezeichnet ist ferner ein Ende 15 des Gleitbereichs. Bis zu dieser Position kann die Masche, wie oben erwähnt, auf dem Nadelschaft 10 gleiten, wenn die Schiebernadel 3 steigt. 4 shows one of the compound needles 3 with a slider 11 shown schematically. Also shown is an end 15 of the sliding area. Up to this position, as mentioned above, the stitch can slide on the needle shank 10 when the compound needle 3 rises.

Die Kettenwirkmaschine 1 hat einen relativ kleinen Hub der Schiebernadel 3. Dieser beträgt maximal 10 mm. Dementsprechend liegt auch die Länge des Gleitbereichs zwischen dem Nadelkopf 8 und dem Ende 15 des Gleitbereichs in einer ähnlichen Größenordnung.The warp knitting machine 1 has a relatively small stroke of the compound needle 3. This is a maximum of 10 mm. Accordingly, the length of the sliding area between the needle head 8 and the end 15 of the sliding area is of a similar order of magnitude.

Wenn sich der Schieber 11 in Schließstellung befindet und den Fangraum 9 verschließt, dann hat die Gesamtheit aus Nadelkopf 8 und Schieber 11 einen gewissen Umfang. Die Schiebernadel 3 ist nun so dimensioniert, dass sie einen entsprechend großen Umfang am Ende 15 des Gleitbereichs aufweist.When the slide 11 is in the closed position and closes the catch space 9, then the entirety of the needle head 8 and the slide 11 has one certain extent. The compound needle 3 is now dimensioned in such a way that it has a correspondingly large circumference at the end 15 of the sliding area.

Die Masche kann also nicht kleiner werden, als es dem Umfang der Schiebernadel 3 am Ende 15 des Gleitbereichs entspricht. Dies wiederum führt dazu, dass sich die Masche nicht aufweiten muss, wenn sich die Schiebernadel 3 mit dem Schieber 11 in Schließstellung durch die Masche hindurchbewegt. Dementsprechend lassen sich auch bei einem kurzen Hub der Schiebernadeln von maximal 10 mm hohe Arbeitsgeschwindigkeiten erzielen, weil man für eine Aufweitung der Masche keine Zeit benötigt. Außerdem wirkt sich das Fehlen der Aufweitung der Masche positiv auf die Qualität der Wirkware aus.The stitch can therefore not be smaller than corresponds to the circumference of the compound needle 3 at the end 15 of the sliding area. This in turn means that the stitch does not have to widen when the compound needle 3 moves through the stitch with the slider 11 in the closed position. Accordingly, high working speeds can be achieved even with a short stroke of the compound needles of a maximum of 10 mm, because no time is required to widen the stitch. In addition, the lack of widening of the stitch has a positive effect on the quality of the knitted fabric.

Der entsprechend große Umfang am Ende 15 des Gleitbereichs der Schiebernadel 3 lässt sich beispielsweise dadurch erreichen, dass die Schiebernadel 3 am Ende 15 des Gleitbereichs eine größere Dicke aufweist. Die Dicke ist die Erstreckung der Schiebernadel 3 in die Richtung, in der die Schiebernadeln 3 an der Wirknadelbarre 2 nebeneinander angeordnet sind.The correspondingly large circumference at the end 15 of the sliding area of the compound needle 3 can be achieved, for example, in that the compound needle 3 has a greater thickness at the end 15 of the sliding area. The thickness is the extent of the compound needle 3 in the direction in which the compound needles 3 are arranged next to one another on the knitting needle bar 2 .

Man kann auch vorsehen, dass sich der Umfang der Schiebernadel 3 beim Abschlagen der Masche, also dann, wenn die Schiebernadel 3 durch die Masche hindurchbewegt wird, praktisch nicht verändert. Mit anderen Worten variiert der Umfang der Gesamtheit aus Schiebernadel 3 und Schieber 11 in Schließstellung vom Nadelkopf 8 bis zum Ende 15 des Gleitbereichs um maximal 15 %.Provision can also be made for the circumference of the compound needle 3 to remain practically unchanged when the stitch is cast off, ie when the compound needle 3 is moved through the stitch. In other words, the scope of the entirety of compound needle 3 and slider 11 in the closed position varies by a maximum of 15% from the needle head 8 to the end 15 of the sliding area.

Auch ist von Vorteil, dass die Schiebernadel 3 jedenfalls am Ende 15 des Gleitbereichs eine Zylinderform aufweist.It is also advantageous that the compound needle 3 has a cylindrical shape at least at the end 15 of the sliding area.

Mit einer derartigen Kettenwirkmaschine lassen sich sehr feine Wirkwaren herstellen. Man kann nämlich eine Feinheit der Schiebernadelanordnung im Bereich von E32 bis E44 verwenden, d.h. man kann 32 bis 44 Schiebernadeln 3 auf einer Länge von 25,4 mm oder einem Zoll anordnen.Very fine knitted goods can be produced with such a warp knitting machine. One can namely a subtlety of the compound needle arrangement in the area use from E32 to E44, ie you can arrange 32 to 44 compound needles 3 over a length of 25.4 mm or one inch.

Durch die zylinderartige Ausbildung des Nadelschafts 10 wird ein Abgleiten der Masche zum Abschlagen über den Nadelkopf 8 mit Schieber 11 in Schließstellung ohne Aufweitung ermöglicht. Durch diese Geometrie des Schafts wird vorzugsweise ein Spannungsverhältnis im Maschenbildungsprozess erreicht, das zur Erhöhung der Wirkwarenqualität beiträgt.The cylindrical design of the needle shaft 10 allows the stitch to slide over the needle head 8 with the slider 11 in the closed position without widening for knocking over. This geometry of the upper preferably achieves a tension ratio in the stitch formation process that contributes to increasing the quality of the knitted fabric.

Claims (11)

  1. Slide needle arrangement of a warp knitting machine (1) having a slide needle stroke of at most 10 mm, wherein the slide needle arrangement has a slide needle (3) with a needle head (8) and a needle shank (10) and a slider (11) cooperating with the slide needle (3), wherein the needle shank (10) having, at least at the end (15) of a sliding region, a circumference which is at least as large as a largest circumference, parallel thereto, of the entirety of the needle head (8) and the slider (11) in the closed position, characterized in that the needle shank (10) is of cylindrical design, at least at the end (15) of the sliding region.
  2. Slide needle arrangement according to claim 1, characterized in that the circumference of a needle shank (10) at the end (15) of the sliding region is exactly as large as the largest circumference of the entirety of needle head (8) and slider (11) in the closed position.
  3. Slide needle arrangement according to claim 1 or 2, characterized in that the needle shank (10) at the end (15) of the sliding region has a greater thickness than the needle head (8).
  4. Slide needle arrangement according to any of claims 1 to 3, characterized in that the circumference of the entirety of slide needle (3) and slider (11) in the closed position varies from the needle head (8) to the end (15) of the sliding region by a maximum of 15 %.
  5. Slide needle arrangement according to any of claims 1 to 4, characterized in that the slide needle arrangement has a fineness of 32 slide needles to 44 slide needles to 25.4 mm (E32 to E44).
  6. Warp knitting machine (1) having a plurality of slide needle arrangements according to any of claims 1 to 5.
  7. Method for producing an elastic knitted fabric, in which loops of the knitted fabric are formed using slide needle arrangements which each have a slider (11) and a slide needle (3) with a needle head (8) and a needle shank (10), the slide needles (3) having a stroke of at most 10 mm, wherein when the loops are knocked off, expansion of the loops is prevented by choosing the circumference of the needle shank (10) at the end (15) of the sliding region in which the stitch is located at the end of a slide needle stroke to be at least as large as the largest circumference, parallel thereto, of the entirety of needle head (8) and slider (11) in the closed position, characterized in that the needle shank (10) is cylindrical at least at the end (15) of the sliding region.
  8. Method according to claim 7, characterized in that the circumference of the needle shank (10) at the end (15) of the sliding region is exactly as large as the largest circumference of the entirety of needle head (8) and slider (11) in the closed position.
  9. Method according to claim 7 or 8, characterized in that the needle shank (10) at the end (15) of the sliding region has a greater thickness than the needle head (15).
  10. Method according to any of claims 7 to 9, characterized in that the circumference of the assembly of the slide needle (3) and slider (11) in the closed position varies from the needle head (8) to the end (15) of the sliding region by a maximum of 15%.
  11. Method according to any of claims 7 to 10, characterized in that a fineness of the slide needle arrangement in the range of 32 slide needles to 44 slide needles to 25.4 mm (E32 to E44) is used.
EP20183097.3A 2020-06-30 2020-06-30 Warp knitting machine, sliding-tongue needle assembly and method for producing an elastic warp knit fabric Active EP3702504B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP20183097.3A EP3702504B1 (en) 2020-06-30 2020-06-30 Warp knitting machine, sliding-tongue needle assembly and method for producing an elastic warp knit fabric
CN202110102279.4A CN113862896B (en) 2020-06-30 2021-01-26 Warp knitting machine, compound needle assembly and method for manufacturing elastic knitting fabric
TW110118678A TWI821672B (en) 2020-06-30 2021-05-24 Warp knitting machine, slide needle assembly and method for producing an elastic knitted article
KR1020210085665A KR102584594B1 (en) 2020-06-30 2021-06-30 Warp knitting machine, slide needle assembly and method for producing an elastic knitted article

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20183097.3A EP3702504B1 (en) 2020-06-30 2020-06-30 Warp knitting machine, sliding-tongue needle assembly and method for producing an elastic warp knit fabric

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EP3702504A2 EP3702504A2 (en) 2020-09-02
EP3702504A3 EP3702504A3 (en) 2021-01-20
EP3702504B1 true EP3702504B1 (en) 2022-09-07

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KR (1) KR102584594B1 (en)
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KR20220002152A (en) 2022-01-06
KR102584594B1 (en) 2023-10-04
CN113862896B (en) 2023-07-25
EP3702504A3 (en) 2021-01-20
CN113862896A (en) 2021-12-31
TW202217105A (en) 2022-05-01
TWI821672B (en) 2023-11-11

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