EP0287577B1 - Warp knit fabric and weft knitting machine for production of a warp knit fabric - Google Patents

Warp knit fabric and weft knitting machine for production of a warp knit fabric Download PDF

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Publication number
EP0287577B1
EP0287577B1 EP87905585A EP87905585A EP0287577B1 EP 0287577 B1 EP0287577 B1 EP 0287577B1 EP 87905585 A EP87905585 A EP 87905585A EP 87905585 A EP87905585 A EP 87905585A EP 0287577 B1 EP0287577 B1 EP 0287577B1
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EP
European Patent Office
Prior art keywords
work
needles
machine according
weft insertion
insertion machine
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EP87905585A
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German (de)
French (fr)
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EP0287577A1 (en
Inventor
Francisco Speich
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Textilma AG
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Textilma AG
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    • 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
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B23/00—Flat warp knitting machines
    • D04B23/12—Flat warp knitting machines with provision for incorporating unlooped wefts extending from selvedge to selvedge

Definitions

  • the invention relates to a weft knitting machine for producing a warp-knitted fabric according to the preamble of claim 1.
  • a weft knitting machine of the type mentioned is known for example from DE-PS 141 414. Using the weft knitting machine, individual warp stitch stitches are formed, which are held together by weft threads. During the knitting process, the weft guides swing through the needle lanes of the knitting needles. Accordingly, the fineness of the warp knitted fabric to be produced is limited by the width of the knitting needles and the width of the weft guide.
  • the object of the invention is to design a weft knitting machine of the type mentioned at the beginning in such a way that the production of a finer warp knitted fabric is possible, i.e. to specify a weft knitting machine which enables a finer division of the knitting needles.
  • the production of the warp knitted fabric is thus divided into two identical rows of knitting needles, which are laterally offset by half the needle pitch and work out of phase. This makes it possible to provide a coarser pitch for each knitting needle bar and still obtain a finer warp knit.
  • the stitches of every second warp stitch stitch are thereby offset by a partial stitch compared to the stitches of each first warp stitch stitch.
  • the stitches in a row are not all made at the same time, but in two phases, corresponding to the two sets of knitting needles, which are used out of phase, ie used one after the other.
  • the production of a row of stitches is thus divided into two phases, so that practically twice as many stitches can be accommodated per row of stitches than was the case with the finest warp-knitted fabrics to date.
  • the warp knitted fabric produced by the weft knitting machine is characterized by an extraordinary delicacy, which significantly improves the appearance and the feel of the warp knitted fabric.
  • the knitted needle bars can be arranged one behind the other.
  • an embodiment according to claim 3 is more advantageous since the knitting needles can then have essentially the same length.
  • the knitting needles can then preferably be clamped according to claim 4. Clamping the knitting needles is also possible.
  • an embodiment according to claim 6 is particularly advantageous.
  • the knitting needles of the two knitting needle bars will be identical.
  • an embodiment according to claim 7 is also advantageous if yarns of different properties are to be processed with the knitting needles of the individual knitting needle bars.
  • the knitting needle bars can be out of phase by an angle other than 180 °. However, an embodiment according to claim 11 is advantageous because at 180 ° the shift of the stitches is just half a stitch length.
  • the knitting needle bars are expediently driven according to claim 12.
  • the arrangement of the warp thread guides according to claim 13 requires only a small amount of space and still allows an individual drive of the warp thread guide sets for the individual knitting needles.
  • the warp thread guides of each knitting needle bar are expediently coupled to their drive.
  • the warp threading device must work twice as fast as a knitting needle bar, since the same warp threading device must operate two knitting needle bars.
  • Figure 1 shows the detail of a warp knitted fabric, which is formed from warp stitch sticks 2 1 and 2 2, which are knitted from a warp thread 4 and are connected to one another by full weft threads 6 1, 6 2.
  • the stitches 82 of every second warp stitch stitch 22 are offset from the stitches 81 of each first warp stitch stitch stick 21 by half a stitch.
  • two full weft threads 61, 62 are arranged. This results in a particularly dense and fine structure of the warp knitted fabric.
  • the warp knitted fabric shown in FIG. 1 is only produced with one weft thread per stitch by omitting every second full weft thread and the entry of the full weft thread is only carried out when stitches of first warp stitch stitches 2 1 or second warp stitch sticks 2 2 are formed .
  • FIG. 2 shows a warp knitted fabric according to FIG. 1, so that the same parts are provided with the same reference numerals.
  • the warp knitted fabric is also provided with partial weft threads 10, which, however, only run within the warp stitch stitches 2 1, 2 2.
  • partial weft threads 10 can be different colored pattern threads or a rubber thread which gives the warp knitted fabric particularly elastic properties.
  • FIG. 3 again shows a warp knitted fabric according to FIG. 2, so that again the same parts are provided with the same reference numerals.
  • the warp knitted fabric according to FIG. 3 is equipped with a further weft thread 12, which is guided between any warp stitch stitches 2 1, 2 2 according to the pattern. Accordingly, such a partial weft thread 12 can cross with a full weft thread 6 1 in a stitch 8 3.
  • FIGs 4 to 7 show the parts of an inventive weft knitting machine essential for the production of warp knitted fabrics.
  • This weft knitting machine contains two knitting needle bars 14, 16 arranged one above the other, each carrying a set of knitting needles 18, 20.
  • the knitting needles 18, 20 have on their rear shafts 22 dovetail-like lugs 24, with which they are each clamped in a clamping device 26, 28.
  • Tensioning screws 30 serve to tighten the clamping devices 26, 28. These tensioning screws 30 are accessible either from the rear or from the top or from the bottom of the knitting needle bars 14, 16.
  • the knitting needle bars 14, 16 are fastened to plungers 32, which serve on the one hand to carry the knitting needle bars and on the other hand to drive the knitting needle bars 14, 16 to and fro.
  • the plungers 32 are slidably guided in a housing 34 on two slide bearings 36.
  • Two driver rollers 38, 40 are arranged on the tappets.
  • the driving roller 38 interacts with a forward curve 42 and the driving roller 40 with a return curve 44, which are arranged on a drive shaft 46 in the housing 34.
  • Such a plunger 32 is provided for each knitting needle bar 14 or 16, the corresponding forward curve and return curve being arranged out of phase on the drive shaft 46, so that the corresponding plunger oscillates against one another out of phase.
  • the knitting needles 18, 20, which are, for example, crochet needles, lie in one plane and are supported on a tapping plate 48 in which they are guided in guide recesses 50, as can be seen in particular from FIGS. 6 and 7.
  • Each set of knitting needles 18, 20 is assigned a set of warp thread guides 52, 54, which also operate out of phase.
  • the warp thread guides 52 which are assigned to the knitting needles 18, are fastened to a shaft 56 on which an arm 58 is arranged, which is connected to a toggle lever 62 via a coupling member 60.
  • the toggle lever 62 which is pivotally mounted on an axis 64, is connected via a further coupling rod 66 to a shoulder 68 of the knitting needle bar 14 in terms of drive.
  • the warp thread guide 52 is thus moved up and down in synchronism with the knitting needle bar 14 in the vertical direction.
  • the warp thread guides 54 which are assigned to the knitting needles 20, are fastened to a sleeve 70 which partially surrounds the shaft 56.
  • This also has an arm 72 which is connected via a coupling member 74 to a further toggle lever 76 which can be pivoted on the axis 64.
  • This toggle lever 76 is connected via a coupling rod 78 to a shoulder 80 which is attached to the knitting needle bar 16, so that the second warp thread guides 54 are pivoted in the vertical direction synchronously with the second knitting needles 20.
  • a drive engages the shaft 56 in the axial direction and serves to offset the warp thread guides 52, 54 by at least one knitting needle pitch, so that the warp thread guides 52, 54 can each be guided around a knitting needle 18, 20 by a warp thread 82, 84 to be able to insert it into a knitting needle 18, 20, as can be seen particularly clearly from FIGS. 6 and 7.
  • a full weft thread guide 86 and various partial weft thread guides 88, 90 are arranged above the knock-off board 48 and the advanced knitting needles 18, 20, some of which are designed as tube thread guides and some as perforated needle thread guides.
  • the guides are attached to various laying bars 92, 94, 96, which are designed, driven and controlled in the usual way.
  • the warp-knitted fabric produced is drawn off downward by a pull-off device 100 in a gap formed between the knock-off plate 48 and a guide bar 98.
  • the first knitting needles 18 and the second knitting needles 20 are each used alternately, namely in phases shifted by 180 ° (curves a and b).
  • the first knitting needles 18 are advanced (curve a), the first warp thread guides 52 inserting warp threads 82 into the knitting needles 18 (curve c).
  • the second warp thread guides 54 (curve d), which are assigned to the second knitting needles 20 (curve b), are retracted, i.e. shown in the underlying position.
  • the first knitting needles 18 are then withdrawn into the position shown in FIG. 7; to knock off a stitch.
  • the full weft thread guide 86 (curve e) moves across the width of the goods to the right side of FIG. 6 (not shown).
  • the second knitting needles 20 are then advanced (curve b) and the warp-laying process is carried out by means of the warp thread guides 54 for the warp threads 84 on the second knitting needles 20 (curve d), as shown in FIG.
  • the full weft guide 86 is again moved to the left side before the first knitting needles 18 are extended. In this way, two weft threads are inserted into each stitch, as shown in FIG. 1.
  • Figure 8 shows a further variant of the first warp thread guide 52 1 and the second warp thread guide 54 1, which are arranged on a common, not shown laying bar and are moved together. All warp thread guides 52 1, 54 1 perform the same movement, but only the first warp thread guides 52 1 or the second warp thread guides 54 1 are used and the rest of the warp thread guides perform an empty movement. In contrast to the warp thread guides 52 and 54 of Figures 6 and 7, the warp thread guides 52 1 and 54 1 must have twice the speed.

Abstract

In the warp knit fabric, the warp stitch columns (21, 22) which have an identical position are connected to one another by weft threads (61, 62). In the rows of stitches, the stitches (82) of each second column of warp stitches (22) are off-set by a fraction of a stitch in relation to the stitches (81) of each first column of warp stitches (21). In this way a warp knit fabric is obtained which is particularly dense and fine.

Description

Die Erfindung betrifft eine Schusswirkmaschine zur Herstellung eines Kettengewirks gemäss Oberbegriff des Anspruches 1.The invention relates to a weft knitting machine for producing a warp-knitted fabric according to the preamble of claim 1.

Eine Schusswirkmaschine der eingangs genannten Art ist beispielsweise aus der DE-PS 141 414 bekannt. Mittels der Schusswirkmaschine werden einzelne Kettenfadenmaschenstäbchen gebildet, die durch Schussfäden zusammengehalten sind. Während des Wirkvorganges schwingen die die Schussfadenführer durch die Nadelgassen der Wirknadeln. Dementsprechend ist die Feinheit des herzustellenden Kettengewirkes begrenzt durch die Breite der Wirknadeln und die Breite der Schussfadenführer.A weft knitting machine of the type mentioned is known for example from DE-PS 141 414. Using the weft knitting machine, individual warp stitch stitches are formed, which are held together by weft threads. During the knitting process, the weft guides swing through the needle lanes of the knitting needles. Accordingly, the fineness of the warp knitted fabric to be produced is limited by the width of the knitting needles and the width of the weft guide.

Aufgabe der Erfindung ist es , eine Schusswirkmaschine der eingangs genannten Art so auszubilden, dass die Herstellung eines feineren Kettengewirkes möglich ist, d.h. eine Schusswirkmaschine anzugeben, die eine feinere Teilung der Wirknadeln ermöglicht.The object of the invention is to design a weft knitting machine of the type mentioned at the beginning in such a way that the production of a finer warp knitted fabric is possible, i.e. to specify a weft knitting machine which enables a finer division of the knitting needles.

Erfindungsgemäss wird dies durch die kennzeichnenden Merkmale des Anspruches 1 gelöst. Die Herstellung der Kettenwirkware wird also auf zwei identische, um die halbe Nadelteilung seitlich versetzte Wirknadelreihen verteilt, die phasenverschoben arbeiten. Dadurch ist es möglich, bei jeder Wirknadelbarre eine gröbere Teilung vorzusehen und dennoch ein feineres Kettengewirk zu erhalten. Die Maschen jedes zweiten Kettfadenmaschenstäbchens sind dadurch gegenüber den Maschen jedes ersten Kettfadenmaschenstäbchens um eine Teilmasche versetzt. Die Maschen einer Reihe werden nicht alle gleichzeitig hergestellt, sondern in zwei Phasen, entsprechend den zwei Wirknadelsätzen, die phasenverschoben, d.h. nacheinander zum Einsatz kommen. Die Herstellung einer Maschenreihe wird damit auf zwei Phasen unterteilt, so dass praktisch doppelt soviel Maschen pro Maschenreihe untergebracht werden können, als dies bei den bisherigen feinsten Kettengewirken der Fall war.According to the invention, this is solved by the characterizing features of claim 1. The production of the warp knitted fabric is thus divided into two identical rows of knitting needles, which are laterally offset by half the needle pitch and work out of phase. This makes it possible to provide a coarser pitch for each knitting needle bar and still obtain a finer warp knit. The stitches of every second warp stitch stitch are thereby offset by a partial stitch compared to the stitches of each first warp stitch stitch. The stitches in a row are not all made at the same time, but in two phases, corresponding to the two sets of knitting needles, which are used out of phase, ie used one after the other. The production of a row of stitches is thus divided into two phases, so that practically twice as many stitches can be accommodated per row of stitches than was the case with the finest warp-knitted fabrics to date.

Während bisher die Grenze der Maschen bei 8 bis 10 Maschen pro cm lag, können nunmehr bis zu 20 Maschen pro cm Breite des Kettengewirks untergebracht werden. Das mittels der Schusswirkmaschine hergestellte Kettengewirk zeichnet sich durch eine ausserordentliche Feinheit aus, die das Aussehen und den Griff des Kettengewirks wesentlich verbessert.While previously the limit of stitches was 8 to 10 stitches per cm, now up to 20 stitches per cm width of the warp knit can be accommodated. The warp knitted fabric produced by the weft knitting machine is characterized by an extraordinary delicacy, which significantly improves the appearance and the feel of the warp knitted fabric.

Vorteilhafte Ausgestaltungen der Schusswirkmaschine sind in den Ansprüchen 2 bis 16 beschrieben.Advantageous embodiments of the weft knitting machine are described in claims 2 to 16.

Für die Schusswirkmaschine zur Herstellung des Kettengewirkes ergeben sich verschiedene Ausgestaltungsmöglichkeiten. So können die Wirknadelbarren gemäss Anspruch 2 hintereinander angeordnet sein. Vorteilhafter ist jedoch eine Ausgestaltung nach Anspruch 3, da dann die Wirknadeln im wesentlichen die gleiche länge haben können. Die Wirknadeln können dann vorzugsweise gemäss Anspruch 4 festgeklemmt werden. Auch ein Festklemmen der Wirknadeln gemäss Anspruch 5 ist möglich. In diesem Falle ist insbesondere eine Ausgestaltung nach Anspruch 6 von Vorteil.There are various design options for the warp knitting machine for producing the warp knitted fabric. Thus, the knitted needle bars can be arranged one behind the other. However, an embodiment according to claim 3 is more advantageous since the knitting needles can then have essentially the same length. The knitting needles can then preferably be clamped according to claim 4. Clamping the knitting needles is also possible. In this case, an embodiment according to claim 6 is particularly advantageous.

In der Regel werden die Wirknadeln der beiden Wirknadelbarren identisch ausgebildet sein. Vorteilhaft ist jedoch aber auch eine Ausgestaltung nach Anpruch 7, wenn mit den Wirknadeln der einzelnen Wirknadelbarren Garne unterschiedlicher Eigenschaften verarbeitet werden sollen.As a rule, the knitting needles of the two knitting needle bars will be identical. However, an embodiment according to claim 7 is also advantageous if yarns of different properties are to be processed with the knitting needles of the individual knitting needle bars.

Es ist denkbar, dass die Spitzen der Wirknadeln der beiden Wirknadelbarren in verschiedenen Ebenen liegen. Vorteilhafter ist jedoch eine Ausgestaltung nach Anspruch 8. Dabei ist es zweckmässig, wenn die Wirknadeln gemäss Anspruch 9 geführt sind. Aber auch eine Führung nach Anspruch 10 ist möglich, wodurch insbesondere der seitliche Abstand benachbarter Wirknadeln besonders klein gehalten werden kann.It is conceivable that the tips of the knitting needles of the two knitting needle bars lie in different planes. However, an embodiment according to claim 8 is more advantageous. It is expedient if the knitting needles are guided according to claim 9. However, guidance according to claim 10 is also possible, whereby in particular the lateral distance between adjacent knitting needles can be kept particularly small.

Die Wirknadelbarren können um einen von 180° abweichenden Winkel phasenverschoben sein. Vorteilhaft ist jedoch eine Ausgestaltung nach Anspruch 11, weil bei 180° die Verschiebung der Maschen gerade eine halbe Maschenlänge beträgt. Die Wirknadelbarren werden zweckmässigerweise gemäss Anspruch 12 angetrieben.The knitting needle bars can be out of phase by an angle other than 180 °. However, an embodiment according to claim 11 is advantageous because at 180 ° the shift of the stitches is just half a stitch length. The knitting needle bars are expediently driven according to claim 12.

Die Anordnung der Kettfadenführer gemäss Anspruch 13 erfordert nur einen geringen Platzbedarf und gestattet dennoch einen individuellen Antrieb der Kettfadenführersätze für die einzelnen Wirknadelbarren. Zweckmässigerweise sind die Kettfadenführer jeder Wirknadelbarre gemäss Anspruch 14 mit deren Antrieb gekoppelt. Es ist aber auch möglich, die Kettfadenführer für beide Wirknadelbarren gemäss Anspruch 15 auszugestalten, allerdings ist dann eine direkte Kopplung des Antriebes der Kettfadenlegevorrichtung mit den Wirknadelbarren nicht möglich. Die Kettfadenlegevorrichtung muss doppelt so schnell arbeiten wie eine Wirknadelbarre, da die gleiche Kettfadenlegevorrichtung zwei Wirknadelbarren bedienen muss.The arrangement of the warp thread guides according to claim 13 requires only a small amount of space and still allows an individual drive of the warp thread guide sets for the individual knitting needles. The warp thread guides of each knitting needle bar are expediently coupled to their drive. However, it is also possible to design the warp thread guides for both knitting needle bars according to claim 15, but then a direct coupling of the drive of the warp thread laying device with the knitting needle bars is not possible. The warp threading device must work twice as fast as a knitting needle bar, since the same warp threading device must operate two knitting needle bars.

Grundsätzlich ist es möglich, einen Vollschussfadenführer so zu steuern, dass er jeweils nur dann zum Einsatz kommt, wenn eine Maschenreihe erster Maschen gebildet wird. Vorteilhaft ist jedoch eine Ausgestaltung nach Anspruch 16, da dies dazu führt, dass in jeder Masche zwei Schussfäden liegen. Dies ergibt ein besonders stabiles und dichtes Kettengewirk.In principle, it is possible to control a full weft guide in such a way that it is only used when a course of first stitches is formed. However, an embodiment according to claim 16 is advantageous, since this means that there are two weft threads in each stitch. This results in a particularly stable and dense warp knit.

Ausführungsbeispiele des Gegenstandes der Erfindung werden nachfolgend anhand der Zeichnungen näher beschrieben, dabei zeigen:

  • Figur 1 ein erstes Kettengewirk, welches lediglich Vollschussfäden aufweist, im Ausschnitt;
  • Figur 2 ein Kettengewirk gemäss Figur 1, bei dem zusätzlich Teilschussfäden innerhalb des Kettfadenmaschenstäbchen angeordnet sind, im Ausschnitt;
  • Figur 3 ein Kettengewirk gemäss Figur 2, bei dem ein weiterer Teilschussfaden mustermässig gelegt ist, im Ausschnitt;
  • Figur 4 eine Schusswirkmaschine im Ausschnitt und im Schnitt IV - IV der Figur 5;
  • Figur 5 die Schusswirkmaschine der Figur 4 im Schnitt V - V der Figur 4 im Ausschnitt;
  • Figuren 6 und 7 die Funktionsweise der Wirknadeln, Kettfadenführer und Schussfadenführer in verschiedenen Herstellungsphasen, in schaubildlicher Darstellung;
  • Figur 8 die Vorrichtung der Figur 6, jedoch nur mit einer Art von Kettfadenführern; und
  • Figur 9 das Bewegungsdiagramm der Elemente der Figuren 6 und 7.
Exemplary embodiments of the subject matter of the invention are described in more detail below with reference to the drawings, in which:
  • Figure 1 shows a first warp knitted fabric, which only has full weft threads, in the detail;
  • FIG. 2 shows a warp knitted fabric according to FIG. 1, in which partial weft threads are additionally arranged within the warp thread, in the cutout;
  • 3 shows a warp knitted fabric according to FIG. 2, in which a further part of the weft thread is laid in a pattern, in the detail;
  • Figure 4 shows a weft knitting machine in section and in section IV - IV of Figure 5;
  • Figure 5 shows the weft knitting machine of Figure 4 in section V - V of Figure 4 in detail;
  • Figures 6 and 7, the functioning of the knitting needles, warp thread guide and weft thread guide in different manufacturing phases, in a graphical representation;
  • Figure 8 shows the device of Figure 6, but only with one type of warp thread guides; and
  • 9 shows the movement diagram of the elements of FIGS. 6 and 7.

Die Figur 1 zeigt den Ausschnitt eines Kettengewirkes, welches aus Kettfadenmaschenstäbchen 2₁ und 2₂ gebildet ist, die aus einem Kettfaden 4 gewirkt und mittels Vollschussfäden 6₁, 6₂ miteinander verbunden sind. Die Maschen 8₂ jedes zweiten Kettfadenmaschenstäbchens 2₂ sind gegenüber den Maschen 8₁ jedes ersten Kettfadenmaschenstäbchens 2₁ um eine halbe Masche versetzt. In jeder Masche 8₁, 8₂ der Kettfadenmaschenstäbchen 2₁, 2₂ sind jeweils zwei Vollschussfäden 6₁, 6₂ angeordnet. Dadurch ergibt sich ein besonders dichtes und feines Gefüge des Kettengewirkes. An sich ist es auch möglich, dass das in Figur 1 gezeigte Kettengewirk nur jeweils mit einem Schussfaden pro Masche hergestellt wird, indem jeder zweite Vollschussfaden weggelassen wird und die Eintragung des Vollschussfadens nur dann erfolgt, wenn Maschen erster Kettfadenmaschenstäbchen 2₁ oder zweiter Kettfadenmaschenstäbchen 2₂ gebildet werden.Figure 1 shows the detail of a warp knitted fabric, which is formed from warp stitch sticks 2 1 and 2 2, which are knitted from a warp thread 4 and are connected to one another by full weft threads 6 1, 6 2. The stitches 8₂ of every second warp stitch stitch 2₂ are offset from the stitches 8₁ of each first warp stitch stitch stick 2₁ by half a stitch. In each stitch 8₁, 8₂ of the warp stitch sticks 2₁, 2₂ two full weft threads 6₁, 6₂ are arranged. This results in a particularly dense and fine structure of the warp knitted fabric. It is also possible per se that the warp knitted fabric shown in FIG. 1 is only produced with one weft thread per stitch by omitting every second full weft thread and the entry of the full weft thread is only carried out when stitches of first warp stitch stitches 2 1 or second warp stitch sticks 2 2 are formed .

Die Figur 2 zeigt ein Kettengewirk gemäss Figur 1, sodass gleiche Teile mit gleichen Bezugszeichen versehen sind. Zusätzlich ist das Kettengewirk noch mit Teilschussfäden 10 versehen, die jedoch nur innerhalb der Kettfadenmaschenstäbchen 2₁, 2₂ verlaufen. Solche Teilschussfäden 10 können verschiedenfarbige Musterfäden sein oder ein Gummifaden, der dem Kettengewirk besonders elastische Eigenschaften verleiht.FIG. 2 shows a warp knitted fabric according to FIG. 1, so that the same parts are provided with the same reference numerals. In addition, the warp knitted fabric is also provided with partial weft threads 10, which, however, only run within the warp stitch stitches 2 1, 2 2. Such partial weft threads 10 can be different colored pattern threads or a rubber thread which gives the warp knitted fabric particularly elastic properties.

Die Figur 3 zeigt wiederum ein Kettengewirk gemäss Figur 2, sodass wiederum gleiche Teile mit gleichen Bezugszeichen versehen sind. Zusätzlich ist das Kettengewirk gemäss Figur 3 mit einem weiteren Teilschussfaden 12 ausgestattet, der zwischen beliebigen Kettfadenmaschenstäbchen 2₁, 2₂ mustermässig geführt ist. Dementsprechend kann ein solcher Teilschussfaden 12 sich mit einem Vollschussfaden 6₁ in einer Masche 8₃ kreuzen.FIG. 3 again shows a warp knitted fabric according to FIG. 2, so that again the same parts are provided with the same reference numerals. In addition, the warp knitted fabric according to FIG. 3 is equipped with a further weft thread 12, which is guided between any warp stitch stitches 2 1, 2 2 according to the pattern. Accordingly, such a partial weft thread 12 can cross with a full weft thread 6 1 in a stitch 8 3.

Die Figuren 4 bis 7 zeigen die erfindungswesentlichen Teile einer im übrigen bekannten Schusswirkmaschine zur Herstellung des Kettengewirkes. Dabei enthält diese Schusswirkmaschine zwei übereinander angeordnete Wirknadelbarren 14, 16 die jeweils einen Satz Wirknadeln 18, 20 tragen. Die Wirknadeln 18, 20 weisen an ihren rückwärtigen Schäften 22 schwalbenschwanzartige Ansätze 24 auf, mit denen sie jeweils in einer Klemmvorrichtung 26, 28 festgeklemmt sind. Spannschrauben 30 dienen zum Festziehen der Klemmvorrichtungen 26, 28. Diese Spannschrauben 30 sind entweder von der Rückseite oder von der Ober- bzw. von der Unterseite der Wirknadelbarren 14, 16 zugänglich. Die Wirknadelbarren 14, 16 sind an Stösseln 32 befestigt, die einerseits zum Tragen der Wirknadelbarren und andererseits zum hin- und hergehenden Antrieb der Wirknadelbarren 14, 16 dienen. Die Stössel 32 sind in einem Gehäuse 34 an zwei Gleitlagern 36 verschieblich geführt. An den Stösseln sind zwei Mitnehmerrollen 38, 40 angeordnet. Die Mitnehmerrolle 38 wirkt mit einer Vorholkurve 42 und die Mitnehmerrolle 40 mit einer Rückholkurve 44 zusammen, die an einer Antriebswelle 46 im Gehäuse 34 angeordnet sind. Für jede Wirknadelbarre 14 bzw. 16 ist ein solcher Stössel 32 vorhanden, wobei die entsprechenden Vorholkurve und Rückholkurve um 180° phasenverschoben an der Antriebswelle 46 angeordnet sind, sodass die entsprechenden Stössel um 180° phasenverschoben gegeneinanderschwingen.Figures 4 to 7 show the parts of an inventive weft knitting machine essential for the production of warp knitted fabrics. This weft knitting machine contains two knitting needle bars 14, 16 arranged one above the other, each carrying a set of knitting needles 18, 20. The knitting needles 18, 20 have on their rear shafts 22 dovetail-like lugs 24, with which they are each clamped in a clamping device 26, 28. Tensioning screws 30 serve to tighten the clamping devices 26, 28. These tensioning screws 30 are accessible either from the rear or from the top or from the bottom of the knitting needle bars 14, 16. The knitting needle bars 14, 16 are fastened to plungers 32, which serve on the one hand to carry the knitting needle bars and on the other hand to drive the knitting needle bars 14, 16 to and fro. The plungers 32 are slidably guided in a housing 34 on two slide bearings 36. Two driver rollers 38, 40 are arranged on the tappets. The driving roller 38 interacts with a forward curve 42 and the driving roller 40 with a return curve 44, which are arranged on a drive shaft 46 in the housing 34. Such a plunger 32 is provided for each knitting needle bar 14 or 16, the corresponding forward curve and return curve being arranged out of phase on the drive shaft 46, so that the corresponding plunger oscillates against one another out of phase.

Die Wirknadeln 18, 20, die beispielsweise Crochetnadeln sind, liegen in einer Ebene und stützen sich auf einer Abschlagplatine 48 ab, in der sie in Führungsausnehmungen 50 geführt sind, wie insbesondere aus den Figuren 6 und 7 hervorgeht. Jedem Satz der Wirknadeln 18, 20 ist ein Satz Kettfadenführer 52, 54 zugeordnet, die ebenfalls phasenverschoben arbeiten.The knitting needles 18, 20, which are, for example, crochet needles, lie in one plane and are supported on a tapping plate 48 in which they are guided in guide recesses 50, as can be seen in particular from FIGS. 6 and 7. Each set of knitting needles 18, 20 is assigned a set of warp thread guides 52, 54, which also operate out of phase.

Die Kettfadenführer 52, die den Wirknadeln 18 zugeordnet sind, sind an einer Welle 56 befestigt, an der ein Arm 58 angeordnet ist, der über ein Koppelglied 60 mit einem Kniehebel 62 verbunden ist. Der an einer Achse 64 schwingend gelagerte Kniehebel 62 ist über eine weitere Koppelstange 66 mit einem Ansatz 68 der Wirknadelbarre 14 antriebsmässig verbunden. Der Kettfadenführer 52 wird somit synchron mit der Wirknadelbarre 14 in vertikaler Richtung auf- und abbewegt. Die Kettfadenführer 54, welche den Wirknadeln 20 zugeordnet sind, sind an einer die Welle 56 teilweise umgebenden Hülse 70 befestigt. Auch diese weist einen Arm 72 auf, der über ein Koppelglied 74 mit einem weiteren Kniehebel 76 verbunden ist, der auf der Achse 64 verschwenkbar ist. Dieser Kniehebel 76 ist über eine Koppelstange 78 mit einem Ansatz 80 antriebsmässig verbunden, der an der Wirknadelbarre 16 befestigt ist, sodass die zweiten Kettfadenführer 54 synchron mit den zweiten Wirknadeln 20 in vertikaler Richtung geschwenkt werden. Ein nicht näher dargestellter Antrieb greift in Achsrichtung an der Welle 56 an und dient zum Versetzen der Kettfadenführer 52, 54 um mindestens eine Wirknadelteilung, sodass die Kettfadenführer 52, 54 jeweils um eine Wirknadel 18, 20 geführt werden können, um einen Kettfaden 82, 84 in eine Wirknadel 18, 20 einlegen zu können, wie dies aus den Figuren 6 und 7 besonders deutlich hervorgeht.The warp thread guides 52, which are assigned to the knitting needles 18, are fastened to a shaft 56 on which an arm 58 is arranged, which is connected to a toggle lever 62 via a coupling member 60. The toggle lever 62, which is pivotally mounted on an axis 64, is connected via a further coupling rod 66 to a shoulder 68 of the knitting needle bar 14 in terms of drive. The warp thread guide 52 is thus moved up and down in synchronism with the knitting needle bar 14 in the vertical direction. The warp thread guides 54, which are assigned to the knitting needles 20, are fastened to a sleeve 70 which partially surrounds the shaft 56. This also has an arm 72 which is connected via a coupling member 74 to a further toggle lever 76 which can be pivoted on the axis 64. This toggle lever 76 is connected via a coupling rod 78 to a shoulder 80 which is attached to the knitting needle bar 16, so that the second warp thread guides 54 are pivoted in the vertical direction synchronously with the second knitting needles 20. A drive, not shown, engages the shaft 56 in the axial direction and serves to offset the warp thread guides 52, 54 by at least one knitting needle pitch, so that the warp thread guides 52, 54 can each be guided around a knitting needle 18, 20 by a warp thread 82, 84 to be able to insert it into a knitting needle 18, 20, as can be seen particularly clearly from FIGS. 6 and 7.

Oberhalb der Abschlagplatine 48 und der vorgeschobenen Wirknadeln 18, 20 sind noch ein Vollschussfadenführer 86 sowie verschiedene Teilschussfadenführer 88, 90 angeordnet, die teils als Röhrchenfadenführer und teils als Lochnadelfadenführer ausgestaltet sind. Die Führer sind an verschiedenen Legestangen 92, 94, 96 befestigt, die in üblicher Weise ausgebildet, angetrieben und gesteuert werden.A full weft thread guide 86 and various partial weft thread guides 88, 90 are arranged above the knock-off board 48 and the advanced knitting needles 18, 20, some of which are designed as tube thread guides and some as perforated needle thread guides. The guides are attached to various laying bars 92, 94, 96, which are designed, driven and controlled in the usual way.

Das hergestellte Kettengewirk wird in einem zwischen der Abschlagplatine 48 und einer Führungsleiste 98 gebildeten Spalt von einer Abzugsvorrichtung 100 nach unten abgezogen.The warp-knitted fabric produced is drawn off downward by a pull-off device 100 in a gap formed between the knock-off plate 48 and a guide bar 98.

Wie insbesondere aus den Figuren 6 und 7 sowie dem Bewegungsdiagramm der Figur 9 hervorgeht, sind die ersten Wirknadeln 18 und die zweiten Wirknadeln 20 jeweils wechselweise im Einsatz und zwar in 180° verschobenen Phasen (Kurven a und b). In Figur 6 sind die ersten Wirknadeln 18 vorgeschoben (Kurve a), wobei die ersten Kettfadenführer 52 Kettfäden 82 in die Wirknadeln 18 einlegen (Kurve c). In dieser Arbeitsphase sind die zweiten Kettfadenführer 54 (Kurve d), welche den zweiten Wirknadeln 20 (Kurve b) zugeordnet sind, in zurückgezogener, d.h. in der Unterlegungsposition dargestellt. Die ersten Wirknadeln 18 werden dann zurückgezogen in die in Figur 7 dargestellte Stellung; um eine Masche abzuschlagen. Gleichzeitig bewegt sich der Vollschussfadenführer 86 (Kurve e) über die Warenbreite auf die rechte Seite der Figur 6 (nicht dargestellt). Daraufhin werden die zweiten Wirknadeln 20 vorgeschoben (Kurve b) und der Kettenlegevorgang mittels der Kettfadenführer 54 für die Kettfäden 84 an den zweiten Wirknadeln 20 ausgeführt (kurve d), wie in Figur 7 dargestellt. Während des Zurückziehens und Abschlagens der Maschen der zweiten Wirknadeln 20 wird der Vollschussfadenführer 86 wieder auf die linke Seite bewegt, bevor die ersten Wirknadeln 18 ausgefahren werden. Auf diese Weise werden in jede Masche zwei Schussfäden eingelegt, wie dies in Figur 1 gezeigt ist.As can be seen in particular from FIGS. 6 and 7 and from the movement diagram in FIG. 9, the first knitting needles 18 and the second knitting needles 20 are each used alternately, namely in phases shifted by 180 ° (curves a and b). In FIG. 6, the first knitting needles 18 are advanced (curve a), the first warp thread guides 52 inserting warp threads 82 into the knitting needles 18 (curve c). In this working phase, the second warp thread guides 54 (curve d), which are assigned to the second knitting needles 20 (curve b), are retracted, i.e. shown in the underlying position. The first knitting needles 18 are then withdrawn into the position shown in FIG. 7; to knock off a stitch. At the same time, the full weft thread guide 86 (curve e) moves across the width of the goods to the right side of FIG. 6 (not shown). The second knitting needles 20 are then advanced (curve b) and the warp-laying process is carried out by means of the warp thread guides 54 for the warp threads 84 on the second knitting needles 20 (curve d), as shown in FIG. During the retraction and knitting of the stitches of the second knitting needles 20, the full weft guide 86 is again moved to the left side before the first knitting needles 18 are extended. In this way, two weft threads are inserted into each stitch, as shown in FIG. 1.

Die Figur 8 zeigt eine weitere Variante der ersten Kettfadenführer 52₁ und der zweiten Kettfadenführer 54₁, die an einer gemeinsamen, nicht näher dargestellten Legestange angeordnet sind und gemeinsam bewegt werden. Alle Kettfadenführer 52₁, 54₁ führen die gleiche bewegung aus, wobei jedoch jeweils nur die ersten Kettfadenführer 52₁ oder die zweiten Kettfadenführer 54₁ im Einsatz sind und die jeweils übrigen Kettfadenführer eine Leerbewegung ausführen. Im Gegensatz zu den Kettfadenführern 52 und 54 der Figuren 6 und 7 müssen die Kettfadenführer 52₁ und 54₁ die doppelte Geschwindigkeit aufweisen.Figure 8 shows a further variant of the first warp thread guide 52 ₁ and the second warp thread guide 54 ₁, which are arranged on a common, not shown laying bar and are moved together. All warp thread guides 52 1, 54 1 perform the same movement, but only the first warp thread guides 52 1 or the second warp thread guides 54 1 are used and the rest of the warp thread guides perform an empty movement. In contrast to the warp thread guides 52 and 54 of Figures 6 and 7, the warp thread guides 52 1 and 54 1 must have twice the speed.

Claims (16)

1. Weft insertion machine for the production of a warp knit fabric, having work needles (18, 20) guided to and fro transversely to a knockover plate and, associated with these work needles, warp thread guides (52, 54, 52₁, 54₁) which, when the work needles (18, 20) are pushed forward, are movable for the insertion of the warp threads between and through the work needles (18, 20), and having at least one weft thread guide (86) moving to and fro transversely to the work needles (18, 20), characterized in that the work needles (18, 20) are distributed evenly on two work needle bars (14, 16) lying on the same side of the fabric and are arranged alternately, and are arranged to be driven out of phase, each work needle bar (14, 16) having associated with it a set of warp thread guides (52, 54, 52₁, 54₁).
2. Weft insertion machine according to claim 1, characterized in that the work needle bars (14, 16) are arranged one behind the other.
3. Weft insertion machine according to claim 1, characterized in that the work needle bars (14, 16) are arranged one above the other.
4. Weft insertion machine according to claim 3, characterized in that the work needles (18) of the upper work needle bar (14) are arranged to be clamped from above and the work needles (20) of the lower work needle bar (16) are arranged to be clamped from below.
5. Weft insertion machine according to claim 1, characterized in that the work needles (18, 20) of the two work needle bars (14, 16) are arranged to be clamped from behind.
6. Weft insertion machine according to claim 1, characterized in that the work needles (18, 20) have dovetailed extensions (24) which are held in corresponding clamping devices (26, 28) of the work needle bars (14, 16).
7. Weft insertion machine according to claim 1, characterized in that the work needles (18, 20) of the one work needle bar (14, 16) are of narrower construction than the work needles (20, 28) of the other work needle bar (16, 14).
8. Weft insertion machine according to claim 1, characterized in that at least the tips of the work needles (18, 20) of both work needle bars (14, 16) lie in a common plane.
9. Weft insertion machine according to claim 1, characterized in that the work needles (18, 20) of both work needle bars (14, 16) are arranged on a common knockover plate (48) with comb-like guide slots (50).
10. Weft insertion machine according to claim 1, characterized in that the work needles (18, 20) of both work needle bars (14, 16) are arranged on a common level knockover plate without lateral guidance.
11. Weft insertion machine according to claim 1, characterized in that the work needle bars (14, 16) are arranged to be driven out of phase by 180° in relation to one another.
12. Weft insertion machine according to claim 1, characterized in that the work needle bars (14, 46) are arranged to be driven by means of cranks or cam gears (38, 40, 42, 44).
13. Weft insertion machine according to claim 1, characterized in that the warp thread guides (52, 54) of the two work needle bars (14, 16) are arranged on a common axle and are arranged to be driven out of phase.
14. Weft insertion machine according to claim 12 and 13, characterized in that the warp thread guides (52, 54) are coupled by way of lever mechanisms with a respective swivel-mounted articulated lever (62, 76) so as to be driven from the associated work needle bar (14, 16) to perform a corresponding vertical oscillating movement, the common shaft (56) being displaceable to and fro by at least one needle gauge by means of a transverse drive.
15. Weft insertion machine according to claim 1, characterized in that the warp thread guides (52₁, 54₁) for both work needle bars are arranged on a common warp thread laying device, the drive speed of which is twice that of the work needle bars.
16. Weft insertion machine according to claim 1, characterized in that it comprises a full weft thread guide (86) which, on the formation both of a row of first stitches (8₁) and a row of second stitches (8₂), is movable across the breadth of the web of fabric.
EP87905585A 1986-09-16 1987-09-11 Warp knit fabric and weft knitting machine for production of a warp knit fabric Expired - Lifetime EP0287577B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH3702/86 1986-09-16
CH370286 1986-09-16

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EP0287577A1 EP0287577A1 (en) 1988-10-26
EP0287577B1 true EP0287577B1 (en) 1991-10-30

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EP87905585A Expired - Lifetime EP0287577B1 (en) 1986-09-16 1987-09-11 Warp knit fabric and weft knitting machine for production of a warp knit fabric

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US (1) US4918947A (en)
EP (1) EP0287577B1 (en)
DD (1) DD266817A5 (en)
DE (1) DE3774267D1 (en)
ES (1) ES2007718A6 (en)
HK (1) HK55192A (en)
SG (1) SG52192G (en)
WO (1) WO1988002038A1 (en)

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Publication number Priority date Publication date Assignee Title
WO1991005595A1 (en) * 1989-10-13 1991-05-02 Mitsubishi Rayon Co., Ltd. Method and apparatus for producing hollow yarn film knitted article
US5416961A (en) † 1994-01-26 1995-05-23 Schlegel Corporation Knitted wire carrier having bonded warp threads and method for forming same
US6722164B1 (en) * 1997-07-16 2004-04-20 Beech Island Knitting Company Elastic fabric and method of making same
AR018063A1 (en) * 1998-02-13 2001-10-31 Basf Se POLYAMIDE INHERENTLY STABILIZED AGAINST LIGHT AND HEAT AND METHOD FOR OBTAINING IT.
JP3856068B2 (en) * 1998-11-16 2006-12-13 Ｙｋｋ株式会社 Actuation mechanism of compound knitting needles in narrow crochet knitting machine
CN105986362A (en) * 2015-02-16 2016-10-05 亿丰综合工业股份有限公司 Ladder belt and knitting method thereof
CN112176520B (en) * 2020-09-28 2022-01-11 广州市天海花边有限公司 Multi-comb warp knitted fabric and knitting method thereof

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Publication number Priority date Publication date Assignee Title
DE243433C (en) *
DE141414C (en) *
NL64105C (en) * 1949-12-08 1949-04-15
US3898819A (en) * 1969-07-01 1975-08-12 Siegfried F Brand Warp knitting machine
CH542949A (en) * 1971-07-19 1973-10-15 Aries World Wide Corp Method of manufacturing a fabric, and machine for its implementation
US3898820A (en) * 1971-09-07 1975-08-12 Siegfried F Brand Warp knit fabrics
DD226917A1 (en) * 1983-03-14 1985-09-04 Textimaforschung Malimo K M St FOOTBOX, IN PARTICULAR NEAR, AND METHOD FOR MANUFACTURING THEREOF

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US4918947A (en) 1990-04-24
HK55192A (en) 1992-07-30
DE3774267D1 (en) 1991-12-05
ES2007718A6 (en) 1989-07-01
SG52192G (en) 1992-07-24
WO1988002038A1 (en) 1988-03-24
EP0287577A1 (en) 1988-10-26
DD266817A5 (en) 1989-04-12

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