EP2122028B1 - Circular knitting machine for producing knitted fabrics using untwisted fibrous material - Google Patents

Circular knitting machine for producing knitted fabrics using untwisted fibrous material Download PDF

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Publication number
EP2122028B1
EP2122028B1 EP07856063A EP07856063A EP2122028B1 EP 2122028 B1 EP2122028 B1 EP 2122028B1 EP 07856063 A EP07856063 A EP 07856063A EP 07856063 A EP07856063 A EP 07856063A EP 2122028 B1 EP2122028 B1 EP 2122028B1
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Prior art keywords
knitting machine
rollers
circular knitting
housing
drafting
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German (de)
French (fr)
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EP2122028A1 (en
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Reinhard KÖNIG
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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B9/00—Circular knitting machines with independently-movable needles
    • D04B9/14—Circular knitting machines with independently-movable needles with provision for incorporating loose fibres, e.g. in high-pile fabrics

Definitions

  • the invention relates to a circular knitting machine of the type specified in the preamble of claim 1.
  • spinning knitting machines eg PCT WO 2004/079068
  • the knitwear is not made of conventional, twisted yarns, but of a fiber sliver, Flyerlunte.
  • Present fibrous material is formed, which is formed essentially of untwisted, mutually parallel staple fibers. This fiber material is fed to the knitting systems by means of drafting devices known from spinning technology. As a result, a knit fabric having extreme softness is obtained.
  • the present invention seeks to propose a compromise between the ingot and the segment design, which reduces the investment costs and the implementation of repair and maintenance still not difficult.
  • the circular knitting machine is surrounded by a comparatively large number of miniature bars, which can be individually connected to the circular knitting machine and represent autonomous systems that can be disassembled individually from the circular knitting machine and re-installed.
  • the circular knitting machine expedient means in the form of switchable locks, od for certain needle selection electromagnets.
  • switchable locks od for certain needle selection electromagnets.
  • the drafting units 8 are arranged so that they are like the knitting systems 6 in the grip region of the operating on the circular knitting machine 1 operator 5.
  • the drafting 8 z. B. attached to a support ring 17, which is supported columns 18 with on a base or lock plate 19 of the circular knitting machine 1.
  • the arrangement is also made such that the od of three or more pairs of drafting rollers 20 or the like. Formed nips not in horizontal planes, but accordingly Fig. 1 lie in oblique planes, wherein the respective cans 9 facing input roller pairs are higher than the circular knitting machine 1 facing output roller pairs above the ground 7.
  • the embodiment according to Fig. 1 is characterized in that the axes of the drafting rollers 20 are all arranged horizontally in use.
  • the drafting 8 can be at least partially opened by their essential functional parts according to the invention are mounted at least partially pivotally downwards in the drafting units 8.
  • the rollers of a selected drafting system 8 are exposed, so that exchanged on these existing straps, eliminated in the drafting 8 existing fiber clumps and other work can be performed without the operator 5 must leave her workspace 4.
  • the drafting 8 is preferably connected to an exhaust 23, the dirt and can absorb flying fibers.
  • a plurality of drafting device groups is arranged, which have a number of knitting systems 6 corresponding number of drafting devices for each one of the fiber materials 10.
  • the drafting groups are designed as so-called Minibarren, each drafting group or Minibarre summarizes at least four and at most eight drafting to an autonomous group. If it is a circular knitting machine 1 with a needle cylinder diameter of 30 "and 48 knitting systems 6, then, for example, four drafting devices per minibarre a total of twelve mini bar racks are needed.
  • the number of knitting systems 6 is expediently divisible by three or four Number, and the number of drawers per minibarre should also be divisible by three or four.
  • FIGS. 2 and 3 show the basic structure of a currently best held embodiment of a drafting group in the form of a Minibarre invention.
  • the drafting group includes a central housing 25 housing gearboxes and drives for pairs of drafting rollers.
  • the drafting systems are designed as 3-roller drafting systems, each having a pair of input rollers I, center rollers II and exit rollers III, wherein the middle roller pair II expediently designed as a double-strap assembly and provided with straps 29a and 29b.
  • each roller pair I to III has an upper roller 26a, 27a, 28a and a lower roller 26b, 27b and 28b.
  • the shafts 32 project out of the housing 25 on both sides, being provided on each side with two overhead input, middle and output rollers 26a to 28a. All shafts 32 are in the assembled state of the minibar ( Fig. 1 ) arranged horizontally.
  • the lower rollers 26b to 28b are rotatably mounted on pressure arms 33 and 34, which are mounted to the shafts 32 parallel axes 34 pivotally mounted on the housing 25.
  • the pressure arm 33 is arranged on one side and the pressure arm 34 on the other side of the housing 25. Both pressure arms 33 and 34 thus each carry two coaxial rollers 26 b, 27 b and 28 b and can be pivoted in the direction of the arrow v down to z.
  • the straps 29a and / or 29b of the upper and / or lower rollers 27a, 27b replace or perform other repair or maintenance.
  • Minibarre Such a trained drafting group or Minibarre is an autonomous unit. If a Minibarre exchanged or shut down because no fiber material 10 is present or any other fault occurs, the associated knitting systems can be stopped by switching to non-knitting. This switching can be effected by an operator, by means of an automatic thread monitor or otherwise. This makes it possible to temporarily disable the entire minibar and the associated knitting systems 6 without having to interrupt the continuous knitting process on the circular knitting machine 1.
  • the minibar is after FIGS. 2 and 3 is preferably used for circular knitting machines with 48 knitting systems 6.
  • Their width can in this case z. B. to about 20 cm to 25 cm and with particular advantage to about 22 cm, whereby it is possible to provide sufficiently short spinning devices 14, which is useful for stabilizing the spinning process.
  • Fig. 4 shows a Minibarre with six drafting or stretching points
  • the fiber material flows are again indicated by the arrows 38.
  • Fig. 3 are here on each side of the housing 25 each arranged three rollers.
  • each side of the housing 26 each have a first pressure arm 39, each carrying two rollers 26b, 27b and 28b and thus responsible for the drawing of two adjacent fiber material streams 40, and a second pressure arm 41 is arranged, the remaining rollers 26b , 27b and 28b and thus provides for the stretching of the respective remaining third fiber material stream 42.
  • the minibar is after Fig. 5 can be made with a total width of 25 cm. It is suitable for. B. for circular knitting machines 1 with a needle cylinder diameter of 30 "and 72 knitting systems, then in turn a total of twelve mini bars are needed.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Knitting Of Fabric (AREA)

Description

Die Erfindung betrifft eine Rundstrickmaschine der im Oberbegriff des Anspruchs 1 angegebenen Gattung.The invention relates to a circular knitting machine of the type specified in the preamble of claim 1.

Bekannte, als Spinnstrickmaschinen bezeichnete Rundstrickmaschinen dieser Art (z. B. PCT WO 2004/079068 ) zeichnen sich dadurch aus, dass die Maschenware nicht aus üblichen, gedrehten Garnen, sondern aus einem als Faserband, Flyerlunte od. dgl. vorliegenden Fasermaterial hergestellt wird, das im wesentlichen aus unverdrehten, parallel zueinander angeordneten Stapelfasern gebildet ist. Dieses Fasermaterial wird den Stricksystemen mit Hilfe von aus der Spinnereitechnik bekannten Streckwerken zugeführt. Als Ergebnis wird eine Maschenware mit extremer Weichheit erhalten.Known circular knitting machines of this type, referred to as spinning knitting machines (eg PCT WO 2004/079068 ) are characterized in that the knitwear is not made of conventional, twisted yarns, but of a fiber sliver, Flyerlunte. Like. Present fibrous material is formed, which is formed essentially of untwisted, mutually parallel staple fibers. This fiber material is fed to the knitting systems by means of drafting devices known from spinning technology. As a result, a knit fabric having extreme softness is obtained.

Die je einem Stricksystem zugeordneten Streckwerke der bekannten Rundstrickmaschine sind zu drei, barrenförmig ausgebildeten und um den Nadelzylinder herum verteilt angeordneten Streckwerksgruppen zusammengefaßt, wobei jede Streckwerksgruppe bzw. -barre eine Vielzahl von Streckwerken und einen Antrieb für deren Walzen aufweist. Um dadurch bedingte, zu starke Richtungsänderungen im Fadenverlauf und zu große Unterschiede in den Weglängen zwischen den einzelnen Streckwerken und den zugehörigen Stricksystemen zu vermeiden, sind zwischen den Streckwerksgruppen vergleichsweise große Totzonen vorhanden. Eine Folge davon ist, daß nur etwa die Hälfte der Stricksysteme einer üblichen Rundstrickmaschine mit einem Nadelzylinderdurchmesser von 30" tatsächlich nutzbar ist. Dadurch wird der Vorteil, daß die Zahl der erforderlichen Antriebe und damit das Investitionsvolumen aufgrund der Zusammenfassung einer Vielzahl von Streckwerken zu einer Streckwerksgruppe klein gehalten werden kann, durch die reduzierte Produktivität zumindest teilweise wieder aufgehoben. Außerdem besteht der Nachteil, daß der Austausch von Streckwerksteilen, insbesondere von in den Streckwerken vorgesehenen Riemchen schwierig ist und praktisch eine komplette Demontage der Streckwerksbarre erfordert.Each of a knitting system associated drafting of the known circular knitting machine are summarized to three, bar-shaped and distributed around the needle cylinder around arranged drafting groups, each drafting group or barre having a plurality of drafting and a drive for the rollers. In order thereby to avoid too strong changes in direction in the thread path and too large differences in the path lengths between the individual drafting systems and the associated knitting systems, comparatively large dead zones are present between the drafting groups. A consequence of this is that only about half of the knitting systems of a conventional circular knitting machine having a needle cylinder diameter of 30 "is actually usable, thereby providing the advantage that the number of required drives and thus the investment volume due to the combination of a plurality of drafting units to a drafting group In addition, there is the disadvantage that the replacement of drafting parts, in particular provided in the drafting devices straps is difficult and practically requires a complete disassembly of the drafting bar.

Zur Vermeidung dieser Nachteile ist bereits vorgeschlagen worden ( DE 10 2006 006 502 A1 ), die Streckwerke einzeln und segmentförmig am Umfang der Rundstrickmaschine anzuordnen. Dadurch soll entweder jedem Stricksystem ein einzelnes Streckwerk zugeordnet werden oder es sollen zwei senkrecht übereinander angeordnete Streckwerke eine Gruppe bilden und zwei benachbarte Stricksysteme bedienen. Ein Vorteil dieser Maßnahme besteht darin, daß die die Oberwalzen tragenden Druckarme zur Seite hin oder nach unten weggeschwenkt werden können. Da jedoch die Streckwerke von ihnen einzeln zugeordneten Antrieben angetrieben werden müssen, benötigt eine Rundstrickmaschine mit 48, 72 oder 96 Stricksystemen eine beträchtliche Anzahl von Antrieben.To avoid these disadvantages has already been proposed ( DE 10 2006 006 502 A1 ), to arrange the drafting systems individually and segmentally on the circumference of the circular knitting machine. As a result, either a single drafting system should be assigned to each knitting system or two drafting systems arranged vertically one above the other should form a group and serve two adjacent knitting systems. An advantage of this measure is that the upper rollers bearing pressure arms can be swung away to the side or down. However, since the drafting systems must be driven by their individually associated drives, a circular knitting machine with 48, 72 or 96 knitting systems requires a considerable number of drives.

Ausgehend davon liegt der Erfindung die Aufgabe zugrunde, einen Kompromiss zwischen der Barren- und der Segmentbauweise vorzuschlagen, der die Investitionskosten reduziert und die Durchführung von Reparatur- und Wartungsarbeiten dennoch nicht wesentlich erschwert.Proceeding from this, the present invention seeks to propose a compromise between the ingot and the segment design, which reduces the investment costs and the implementation of repair and maintenance still not difficult.

Zur Lösung dieser Aufgabe dienen die kennzeichnenden Merkmale des Patentanspruchs 1.To solve this problem, the characterizing features of claim 1 serve.

Durch die Erfindung wird die Rundstrickmaschine von einer vergleichsweise großen Anzahl von Miniaturbarren umgeben, die einzeln mit der Rundstrickmaschine verbunden werden können und autonome Systeme darstellen, die einzeln von der Rundstrickmaschine demontiert und wieder eingebaut werden können. Um bei derartigen Arbeiten den kontinuierlichen Strickvorgang nicht zu behindern, weist die Rundstrickmaschine zweckmäßig Mittel in Form von schaltbaren Schloßteilen, zur Nadelauswahl bestimmten Elektromagneten od. dgl. auf, um die Stricksysteme beim Arbeiten an den zugeordneten Streckwerken auf Nichtstricken umschalten zu können.By the invention, the circular knitting machine is surrounded by a comparatively large number of miniature bars, which can be individually connected to the circular knitting machine and represent autonomous systems that can be disassembled individually from the circular knitting machine and re-installed. In order not to hinder the continuous knitting operation in such work, the circular knitting machine expedient means in the form of switchable locks, od for certain needle selection electromagnets. Like. On to switch the knitting systems when working on the associated drafting on non-knitting can.

Weitere vorteilhafte Merkmale der Erfindung ergeben sich aus den Unteransprüchen.Further advantageous features of the invention will become apparent from the dependent claims.

Die Erfindung wird nachfolgend in Verbindung mit den beiliegenden Zeichnungen an Ausführungsbeispielen näher erläutert. Es zeigen:

  • Fig. 1 schematisch eine erfindungsgemäße Rundstrickmaschine;
  • Fig. 2 einen Querschnitt durch eine erfindungsgemäße Streckwerksgruppe in Form einer Minibarre für vier Stricksysteme, von der Seite her gesehen;
  • Fig. 3 eine Unteransicht der Streckwerksgruppe nach Fig. 2; und
  • Fig. 4 und 5 der Fig. 3 entsprechende Ansichten von Streckwerksgruppen für sechs und acht Stricksysteme.
The invention will be explained in more detail below in connection with the accompanying drawings of exemplary embodiments. Show it:
  • Fig. 1 schematically a circular knitting machine according to the invention;
  • Fig. 2 a cross section through a drafting device group according to the invention in the form of a Minibarre for four knitting systems, seen from the side;
  • Fig. 3 a bottom view of the drafting group after Fig. 2 ; and
  • 4 and 5 of the Fig. 3 corresponding views of drafting groups for six and eight knitting systems.

Fig. 1 zeigt schematisch eine Rundstrickmaschine 1 mit einem drehbaren Nadelzylinder 2, in dem Stricknadeln 3 verschiebbar gelagert sind. Vor der Rundstrickmaschine 1 bzw. in einem diesen umgebenden Bereich ist schematisch ein Arbeitsraum 4 angedeutet, in dem sich beim üblichen Arbeiten an der Rundstrickmaschine 1 eine Bedienungsperson 5 aufhält. Die Höhe der Rundstrickmaschine 1 ist in üblicher Weise so bemessen, dass eine Vielzahl von Maschenbildungs- bzw. Stricksystemen 6, die von nicht dargestellten Schlossteilen gebildet werden und von denen in Fig. 1 nur eines gezeigt ist, im Griffbereich der Bedienungsperson 5 liegt. Unter der Bezeichnung "Griffbereich" wird derjenige Bereich verstanden, der vorzugsweise in einem ergonomisch besonders günstigen und/oder z. B. durch Arbeitsanweisungen, Normen oder sonstwie vorgeschriebenen Abstand oberhalb eines Erdbodens 7 od. dgl. angeordnet ist, auf dem sowohl die Rundstrickmaschine 1 als auch die Bedienungsperson 5 steht. Fig. 1 schematically shows a circular knitting machine 1 with a rotatable needle cylinder 2, in which knitting needles 3 are slidably mounted. In front of the circular knitting machine 1 or in a surrounding area, a working space 4 is schematically indicated, in which an operator 5 stops during normal work on the circular knitting machine 1. The height of the circular knitting machine 1 is dimensioned in a conventional manner so that a plurality of knitting or knitting systems 6, which are formed by lock parts, not shown, and of which in Fig. 1 only one is shown in the grip area of the operator 5 is located. The term "handle area" is understood to mean that area which preferably has an ergonomically favorable and / or z. B. by work instructions, standards or otherwise prescribed distance above a soil 7 od. Like. Is arranged on which both the circular knitting machine 1 and the operator 5 is.

Die im Rahmen der vorliegenden Erfindung interessierende Rundstrickmaschine 1 ist als sog. Spinnstrickmaschine ausgebildet. Jeder Maschenbildungs- bzw. Strickstelle 6 ist ein Streckwerk 8 zugeordnet, dem ein aus einer Kanne 9 entnommenes Fasermaterial 10 in Form eines Faserbandes zugeführt wird. Alternativ kann das Fasermaterial 10 aus einer von Vorratsspulen abgezogenen Flyerlunte bestehen. Das Fasermaterial 10 wird im Streckwerk 8 in an sich bekannter Weise zu einem Faden verfeinert und vorzugsweise mittels eines Fadenführers 11 den Stricknadeln 3 zur Maschenbildung vorgelegt. Mit dem Bezugszeichen 12 ist ferner ein Hilfsfaden angedeutet, der dem Fadenführer 11 ebenfalls zugeführt werden kann.The circular knitting machine 1 of interest in the context of the present invention is designed as a so-called spinning knitting machine. Each knitting or knitting point 6 is assigned a drafting device 8 to which a fiber material 10 taken from a can 9 is supplied in the form of a sliver. Alternatively, the fiber material 10 may consist of a flyer drawn off from supply spools. The fiber material 10 is refined in the drafting device 8 in a conventional manner to a thread and preferably presented by means of a thread guide 11 the knitting needles 3 for stitch formation. By the reference numeral 12, an auxiliary thread is further indicated, which can also be supplied to the yarn guide 11.

Zwischen dem Streckwerk 8 und dem Fadenführer 11 ist außerdem vorzugsweise eine in Fig. 1 nur schematisch angedeutete Spinnvorrichtung 14 angeordnet, die ein Drallorgan 15 und ein Spinn- oder Transportrohr 16 (vgl. auch Fig. 2) für das Fasermaterial 10 enthält. Rundstrickmaschinen der beschriebenen Art sind dem Fachmann z. B. aus der eingangs genannten Druckschrift PCT WO 2004/079068 A2 bekannt, die zur Vermeidung von Wiederholungen hiermit durch Referenz auf sie zum Gegenstand der vorliegenden Offenbarung gemacht wird.Between the drafting 8 and the yarn guide 11 is also preferably in Fig. 1 only schematically indicated spinning device 14, which is a swirl member 15 and a spinning or transport tube 16 (see also Fig. 2 ) for the fiber material 10. Circular knitting machines of the type described are the expert z. B. from the aforementioned publication PCT WO 2004/079068 A2 which is hereby incorporated by reference herein to avoid repetition.

Bei einem bevorzugten Ausführungsbeispiel der Erfindung sind die Streckwerke 8 so angeordnet, daß sie wie die Stricksysteme 6 im Griffbereich der an der Rundstrickmaschine 1 arbeitenden Bedienungsperson 5 liegen. Zu diesem Zweck sind die Streckwerke 8 z. B. an einem Tragring 17 befestigt, der mittls Säulen 18 auf einer Grund- oder Schlossplatte 19 der Rundstrickmaschine 1 abgestützt ist. Mit besonderem Vorteil ist die Anordnung außerdem so getroffen, daß die von drei oder mehr Paaren von Streckwalzen 20 od. dgl. gebildeten Klemmlinien nicht in horizontalen Ebenen, sondern entsprechend Fig. 1 in schrägen Ebenen liegen, wobei den jeweiligen Kannen 9 zugewandte Eingangswalzen-Paare höher als der Rundstrickmaschine 1 zugewandte Ausgangswalzen-Paare über dem Erdboden 7 liegen.In a preferred embodiment of the invention, the drafting units 8 are arranged so that they are like the knitting systems 6 in the grip region of the operating on the circular knitting machine 1 operator 5. For this purpose, the drafting 8 z. B. attached to a support ring 17, which is supported columns 18 mittels on a base or lock plate 19 of the circular knitting machine 1. With particular advantage, the arrangement is also made such that the od of three or more pairs of drafting rollers 20 or the like. Formed nips not in horizontal planes, but accordingly Fig. 1 lie in oblique planes, wherein the respective cans 9 facing input roller pairs are higher than the circular knitting machine 1 facing output roller pairs above the ground 7.

Das Ausführungsbeispiel nach Fig. 1 zeichnet sich dadurch aus, daß die Achsen der Streckwalzen 20 im Gebrauchszustand sämtlich horizontal angeordnet sind. Um zu erreichen, daß die Streckwerke 8 für die Bedienungsperson 5 vom Arbeitsraum 4 her nicht nur erreichbar sind, sondern auch leicht gewartet und/oder repariert werden können, ohne sie völlig demontieren zu müssen, können die Streckwerke 8 zumindest teilweise dadurch geöffnet werden, daß ihre wesentlichen Funktionsteile erfindungsgemäß zumindest teilweise nach unten hin schwenkbar in den Streckwerken 8 gelagert sind. Das ist in Fig. 1 durch ein die sog. Oberwalzen tragendes Bauelement in Form eines Druckarms 21 angedeutet, der im Gegensatz zur herkömmlichen Technik unten anstatt oben liegt und in Richtung eines Pfeils y um eine beispielhaft angedeutete, horizontale Schwenkachse 22 verschwenkt werden kann. Dadurch werden bei Bedarf die Walzen eines ausgewählten Streckwerks 8 freigelegt, so dass an diesen vorhandene Riemchen ausgetauscht, im Streckwerk 8 vorhandene Faserzusammenballungen beseitigt und andere Arbeiten durchgeführt werden können, ohne dass die Bedienungsperson 5 ihren Arbeitsraum 4 verlassen muss.The embodiment according to Fig. 1 is characterized in that the axes of the drafting rollers 20 are all arranged horizontally in use. To achieve that the drafting 8 are not only accessible to the operator 5 from the working space 4 forth, but also easily maintained and / or repaired without having to dismantle it completely, the drafting 8 can be at least partially opened by their essential functional parts according to the invention are mounted at least partially pivotally downwards in the drafting units 8. Is in Fig. 1 indicated by a so-called upper rollers supporting member in the form of a pressure arm 21, which is in contrast to the conventional technique below instead of above and in the direction of an arrow y can be pivoted about an exemplified, horizontal pivot axis 22. As a result, if necessary, the rollers of a selected drafting system 8 are exposed, so that exchanged on these existing straps, eliminated in the drafting 8 existing fiber clumps and other work can be performed without the operator 5 must leave her workspace 4.

Das Streckwerk 8 ist vorzugsweise an eine Absaugung 23 angeschlossen, die Schmutz und herumfliegende Fasern aufzunehmen vermag.The drafting 8 is preferably connected to an exhaust 23, the dirt and can absorb flying fibers.

Am Umfang des Nadelzylinders 2 ist eine Mehrzahl von Streckwerksgruppen angeordnet, die eine der Zahl der Stricksysteme 6 entsprechende Anzahl von Streckwerken für je eines der Fasermaterialien 10 aufweisen. Wie weiter unten erläutert ist, sind die Streckwerksgruppen als sogenannte Minibarren ausgebildet, wobei jede Streckwerksgruppe oder Minibarre mindestens vier und höchstens acht Streckwerke zu einer autonomen Gruppe zusammenfaßt. Handelt es sich um eine Rundstrickmaschine 1 mit einem Nadelzylinderdurchmesser von 30" und 48 Stricksystemen 6, dann werden bei z. B. vier Streckwerken pro Minibarre insgesamt zwölf Minibarren benötigt.Aus stricktechnischen Gründen ist die Anzahl der Stricksysteme 6 zweckmäßig eine durch drei oder vier teilbare Zahl, und die Zahl der Streckwerke pro Minibarre sollte ebenfalls durch drei oder vier teilbar sein.At the periphery of the needle cylinder 2 a plurality of drafting device groups is arranged, which have a number of knitting systems 6 corresponding number of drafting devices for each one of the fiber materials 10. As explained below, the drafting groups are designed as so-called Minibarren, each drafting group or Minibarre summarizes at least four and at most eight drafting to an autonomous group. If it is a circular knitting machine 1 with a needle cylinder diameter of 30 "and 48 knitting systems 6, then, for example, four drafting devices per minibarre a total of twelve mini bar racks are needed.For knitting technical reasons, the number of knitting systems 6 is expediently divisible by three or four Number, and the number of drawers per minibarre should also be divisible by three or four.

Wichtig ist weiterhin die Gesamtbreite einer solchen Minibarre. Die Gesamtbreite sollte so klein wie möglich sein, damit die Entfernung vom Austritt des Fasermaterialstroms aus einem Streckwerk bis zu seinem Eintritt in ein Stricksystem 6 möglichst klein wird. Diese Bedingung resultiert aus der Funktion der Spinnvorrichtung 14.Important is still the total width of such a minibar. The total width should be as small as possible so that the distance from the exit of the fiber material flow from a drafting system to its entry into a knitting system 6 is as small as possible. This condition results from the function of the spinning device 14.

Fig. 2 und 3 zeigen den prinzipiellen Aufbau eines für derzeit am besten gehaltenen Ausführungsbeispiels einer Streckwerksgruppe in Form einer erfindungsgemäßen Minibarre. Die Streckwerksgruppe enthält ein zentrales Gehäuse 25, in dem Getriebe und Antriebe für Paare von Streckwerkswalzen untergebracht sind. Im Ausführungsbeispiel sind die Streckwerke als 3-Walzen-Streckwerke ausgebildet, die je ein Paar von Eingangswalzen I, Mittelwalzen II und Ausgangswalzen III aufweisen, wobei das Mittelwalzenpaar II zweckmäßig als Doppel-Riemchen-Baugruppe ausgebildet und mit Riemchen 29a und 29b versehen ist. Demzurfolge hat jedes Walzenpaar I bis III eine oben liegende Walze 26a, 27a 28a und eine unten liegende Walze 26b, 27b und 28b. Im Gegensatz zu herkömmlichen Streckwerken sind die oberen Walzen 26a, 27a und 28a mit schematisch angedeuteten, z. B. als Servomotoren ausgebildeten Antrieben 30 und 31 verbunden, die zur Herstellung eines Vorverzugs zwischen den Walzenpaaren I und II und eines Hauptverzugs zwischen den Walzenpaaren II und III dienen. Die Antriebe 30, 31 sind zusammen mit den erforderlichen Getriebeteilen im Gehäuse 25 untergebracht und treiben das Gehäuse 25 durchragende, nach beiden Seiten aus dem Gehäuse 25 herausragende Wellen an. Dies ist in Fig. 3, die einen schematischen Grundriß zeigt, wobei der Klarheit halber bestimmte Einzelteile nicht dargestellt sind, für eine Welle 32 angedeutet. Auf diesen Wellen 32 sind die Walzen 26a bis 28a befestigt. Alternativ können die Walzen 26a bis 28a auch durch an die Wellen 32 angeformte Abschnitte gebildet sein, in welchem Fall es möglich wäre, von Streckstellen oder Streckbahnen anstatt von einzelnen Streckwerken zu sprechen. In der nachfolgenden Beschreibung werden jedoch die üblichen Begriffe "Streckwerke" und "Walzen" beibehalten. FIGS. 2 and 3 show the basic structure of a currently best held embodiment of a drafting group in the form of a Minibarre invention. The drafting group includes a central housing 25 housing gearboxes and drives for pairs of drafting rollers. In the exemplary embodiment, the drafting systems are designed as 3-roller drafting systems, each having a pair of input rollers I, center rollers II and exit rollers III, wherein the middle roller pair II expediently designed as a double-strap assembly and provided with straps 29a and 29b. As a result, each roller pair I to III has an upper roller 26a, 27a, 28a and a lower roller 26b, 27b and 28b. In contrast to conventional drafting, the upper rollers 26a, 27a and 28a with schematically indicated, z. B. formed as servomotors drives 30 and 31, which serve to produce a pre-delay between the pairs of rollers I and II and a main delay between the pairs of rollers II and III. The drives 30, 31 are housed together with the required gear parts in the housing 25 and drive the housing 25 by outstanding, protruding from both sides of the housing 25 Waves on. This is in Fig. 3 , which shows a schematic plan view, wherein for the sake of clarity certain items are not shown, indicated for a shaft 32. On these shafts 32, the rollers 26a to 28a are fixed. Alternatively, the rollers 26a-28a may also be formed by sections formed on the shafts 32, in which case it would be possible to speak of stretching or stretching paths instead of individual drafting devices. In the following description, however, the usual terms "drafting" and "rolling" are retained.

Wie Fig. 3 zeigt, kragen die Wellen 32 zu beiden Seiten aus dem Gehäuse 25 heraus, wobei sie auf jeder Seite mit zwei oben liegenden Eingangs-, Mittel- und Ausgangswalzen 26a bis 28a versehen sind. Alle Wellen 32 sind im montierten Zustand der Minibarre (Fig. 1) horizontal angeordnet. Die unteren Walzen 26b bis 28b sind dagegen an Druckarmen 33 und 34 drehbar gelagert, die um zu den Wellen 32 parallele Achsen 34 schwenkbar am Gehäuse 25 gelagert sind. Der Druckarm 33 ist auf der einen Seite und der Druckarm 34 auf der anderen Seite des Gehäuses 25 angeordnet. Beide Druckarme 33 und 34 tragen somit je zwei koaxiale Walzen 26b, 27b und 28b und können in Richtung des Pfeils v nach unten geschwenkt werden, um z. B. die Riemchen 29a und/oder 29b der oberen und/oder unteren Walzen 27a, 27b auszuwechseln oder andere Reparatur- oder Wartungsarbeiten durchzuführen.As Fig. 3 shows, the shafts 32 project out of the housing 25 on both sides, being provided on each side with two overhead input, middle and output rollers 26a to 28a. All shafts 32 are in the assembled state of the minibar ( Fig. 1 ) arranged horizontally. The lower rollers 26b to 28b, however, are rotatably mounted on pressure arms 33 and 34, which are mounted to the shafts 32 parallel axes 34 pivotally mounted on the housing 25. The pressure arm 33 is arranged on one side and the pressure arm 34 on the other side of the housing 25. Both pressure arms 33 and 34 thus each carry two coaxial rollers 26 b, 27 b and 28 b and can be pivoted in the direction of the arrow v down to z. B. the straps 29a and / or 29b of the upper and / or lower rollers 27a, 27b replace or perform other repair or maintenance.

Im übrigen komplettieren bekannte Füllstücke 35, Saug- und Blaskanäle 36 und Eingangstrichter 37 die 3-Walzen-Streckwerke. Jedes Streckwerk transportiert infolgedessen einen durch einen Pfeil 38 (Fig. 3) angedeuteten Fasermaterialstrom in Richtung der zugehörigen Spinnvorrichtung 14.Moreover, known filling pieces 35, suction and blowing channels 36 and inlet funnel 37 complete the 3-roller drafting systems. As a result, each drafting system transports one by an arrow 38 (FIG. Fig. 3 ) indicated fiber material flow in the direction of the associated spinning device 14th

Eine derart ausgebildete Streckwerksgruppe oder Minibarre stellt eine autonome Einheit dar. Wird eine Minibarre ausgetauscht oder stillgesetzt, weil kein Fasermaterial 10 anliegt oder eine sonstige Störung auftritt, so können die zugehörigen Stricksysteme stillgesetzt werden, indem sie auf Nichtstricken umgeschaltet werden. Diese Umschaltung kann durch eine Bedienungsperson, mit Hilfe eines automatisch arbeitenden Fadenwächters oder sonstwie bewirkt werden. Dadurch ist es möglich, die gesamte Minibarre und die zugehörigen Stricksysteme 6 temporär außer Funktion zu bringen, ohne den kontinuierlichen Maschenbildungsprozeß auf der Rundstrickmaschine 1 unterbrechen zu müssen.Such a trained drafting group or Minibarre is an autonomous unit. If a Minibarre exchanged or shut down because no fiber material 10 is present or any other fault occurs, the associated knitting systems can be stopped by switching to non-knitting. This switching can be effected by an operator, by means of an automatic thread monitor or otherwise. This makes it possible to temporarily disable the entire minibar and the associated knitting systems 6 without having to interrupt the continuous knitting process on the circular knitting machine 1.

Die Minibarre nach Fig. 2 und 3 wird vorzugsweise für Rundstrickmaschinen mit 48 Stricksystemen 6 angewendet. Ihre Breite kann in diesem Fall z. B. auf ca. 20 cm bis 25 cm und mit besonderem Vorteil auf ca. 22 cm eingestellt werden, wodurch es möglich ist, hinreichend kurze Spinnvorrichtungen 14 vorzusehen, was zur Stabilisierung des Spinnprozesses zweckmäßig ist.The minibar is after FIGS. 2 and 3 is preferably used for circular knitting machines with 48 knitting systems 6. Their width can in this case z. B. to about 20 cm to 25 cm and with particular advantage to about 22 cm, whereby it is possible to provide sufficiently short spinning devices 14, which is useful for stabilizing the spinning process.

Fig. 4 zeigt eine Minibarre mit sechs Streckwerken bzw. Streckstellen, wobei die Fasermaterialströme wiederum durch die Pfeile 38 angedeutet sind. Im Gegensatz zu Fig. 3 sind hier auf jeder Seite des Gehäuses 25 je drei Walzen angeordnet. Außerdem ist auf jeder Seite des Gehäuses 26 je ein erster Druckarm 39, der je zwei Walzen 26b, 27b und 28b trägt und somit für die Verstreckung von zwei nebeneinander liegenden Fasermaterialströmen 40 zuständig ist, und ein zweiter Druckarm 41 angeordnet, der die restlichen Walzen 26b, 27b und 28b trägt und somit für die Verstreckung des jeweils verbleibenden dritten Fasermaterialstroms 42 sorgt. Fig. 4 shows a Minibarre with six drafting or stretching points, the fiber material flows are again indicated by the arrows 38. In contrast to Fig. 3 are here on each side of the housing 25 each arranged three rollers. In addition, on each side of the housing 26 each have a first pressure arm 39, each carrying two rollers 26b, 27b and 28b and thus responsible for the drawing of two adjacent fiber material streams 40, and a second pressure arm 41 is arranged, the remaining rollers 26b , 27b and 28b and thus provides for the stretching of the respective remaining third fiber material stream 42.

Die Minibarre nach Fig. 5 kann mit einer Gesamtbreite von 25 cm hergestellt werden. Sie eignet sich z. B. für Rundstrickmaschinen 1 mit einem Nadelzylinderdurchmesser von 30" und 72 Stricksystemen, für die dann insgesamt wiederum zwölf Minibarren benötigt werden.The minibar is after Fig. 5 can be made with a total width of 25 cm. It is suitable for. B. for circular knitting machines 1 with a needle cylinder diameter of 30 "and 72 knitting systems, then in turn a total of twelve mini bars are needed.

Fig. 5 zeigt eine Minibarre mit acht Streckwerken bzw. Streckstellen für acht Fasermaterialströme (Pfeile 38). Beidseits des Gehäuses 25 sind die Wellen 32 hier mit je vier koaxialen, in Fig. 5 nicht sichtbaren Walzen 26a, 27a und 28a versehen. Außerdem ist auf beiden Seiten des Gehäuses 25 je ein Druckarm 43 vorhanden, der für alle vier Fasermaterialströme der betreffenden Seite und die diesen zugeordneten Walzen 26b, 27b und 28b zuständig ist. Wie Fig. 5 zeigt, kann es bie diesem Ausführungsbeispiel besonders zweckmäig sein, jeweils zwei nebeneinander liegende Fasermaterialströme mit Walzen 26 bis 28 zu verstrecken, die auf demselben Umfangsabschnitt zwei nebeneinander liegende Spuren 44a, 44b aufweisen. Fig. 5 shows a Minibarre with eight drafting or stretching points for eight fiber material streams (arrows 38). On both sides of the housing 25, the shafts 32 are here each with four coaxial, in Fig. 5 not visible rollers 26a, 27a and 28a provided. In addition, on both sides of the housing 25 each have a pressure arm 43 which is responsible for all four fiber material flows of the relevant page and the associated rollers 26b, 27b and 28b. As Fig. 5 shows it may be particularly expedient in this embodiment, each two juxtaposed fiber material streams with rollers 26 to 28 to stretch, which have two adjacent tracks 44a, 44b on the same peripheral portion.

Die Breite der Minibarre nach Fig. 5 kann auf ca. 25 cm eingestellt werden. Diese Minibarre eignet sich daher z. B. für Rundstrickmaschinen 1 mit Nadelzylinderdurchmessern von 30" und 96 Stricksystemen 6, so daß auch hier zwölf Minibarren zum Einsatz kommen.The width of the minibar re after Fig. 5 can be adjusted to approx. 25 cm. This minibar is therefore suitable for. B. for circular knitting machines 1 with needle cylinder diameters of 30 "and 96 knitting systems 6, so that here also 12 Minibarren for Use come.

Claims (8)

  1. Circular knitting machine, comprising: a rotatably mounted needle cylinder (2), knitting tools (3) disposed therein, a plurality of knitting systems (6) disposed on the circumference of the needle cylinder (2) and a corresponding plurality of drawing frames (8) assigned individually to the knitting systems (6) for supplying essentially untwisted fibrous materials (10) to knitting tools (3) which can be deployed on the knitting systems (6) in respectively one fibre-receiving position, the drawing frames (8) having upper and lower rollers (26a, 27a, 28a; 26b, 27b, 28b) and being combined in bar form to form drawing frame assemblies which are provided with common drives and disposed distributed on the circumference of the needle cylinder (2), characterised in that each drawing frame assembly has at least four and at most eight adjacent drawing frames and a central housing (25) intended for receiving the drives (30, 31), from which housing the upper and lower rollers (26a, 27a, 28a; 26b, 27b, 28b) of the drawing frame assembly protrude on both sides.
  2. Circular knitting machine according to claim 1, characterised in that the drawing frames (8) comprise 3-roller drawing frames which have respectively one pair of input, central and output rollers (I, II, III) which are mounted respectively coaxially to each other on the housing (25).
  3. Circular knitting machine according to claim 2, characterised in that the input, central and output rollers (I, II, III) are provided on respectively one common shaft (32) which penetrates the housing (25).
  4. Circular knitting machine according to one of the claims 1 to 3, characterised in that rollers (26a, 27a, 28a) connected to the drives (30, 31) are situated at the top and rollers (26b, 27b, 28b) situated at the bottom are mounted on pressure arms (21, 33, 34, 39, 41, 43) which are connected to the housing (25) to be pivotable downwards.
  5. Circular knitting machine according to claim 4, characterised in that respectively one pressure arm (33, 34; 43) is provided on both sides of the housing (25).
  6. Circular knitting machine according to one of the claims 1 to 5, characterised in that respectively the rollers for two or four drawing frames are provided on both sides of the housing (25).
  7. Circular knitting machine according to claim 4, characterised in that respectively the rollers for three drawing frames are provided on both sides of the housing (25), there being mounted pivotably on each side a first pressure arm (39) for respectively two drawing frames and a second pressure arm (41) for respectively one drawing frame.
  8. Circular knitting machine according to one of the claims 1 to 7, characterised in that it is provided with means for switching the knitting systems (6) to non-knitting.
EP07856063A 2006-12-03 2007-12-03 Circular knitting machine for producing knitted fabrics using untwisted fibrous material Active EP2122028B1 (en)

Applications Claiming Priority (2)

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DE102006056895 2006-12-03
PCT/DE2007/002205 WO2008067804A1 (en) 2006-12-03 2007-12-03 Circular knitting machine for producing knitted fabrics using untwisted fibrous material

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EP2122028A1 EP2122028A1 (en) 2009-11-25
EP2122028B1 true EP2122028B1 (en) 2013-02-13

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US (1) US7748239B2 (en)
EP (1) EP2122028B1 (en)
JP (1) JP2010511803A (en)
KR (1) KR101407833B1 (en)
CN (1) CN101548040B (en)
BR (1) BRPI0719646B1 (en)
HK (1) HK1134118A1 (en)
WO (1) WO2008067804A1 (en)

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Publication number Priority date Publication date Assignee Title
DE102007041171A1 (en) 2007-08-28 2009-03-05 Sipra Patententwicklungs- Und Beteiligungsgesellschaft Mbh Method and knitting machine for producing a knitted fabric from substantially untwisted fiber material
KR101982898B1 (en) * 2011-09-21 2019-05-27 레인하르드 쾨니그 Folding drawing system for a spin-knit machine
DE102013103738A1 (en) * 2013-04-15 2014-10-16 Sipra Patententwicklungs- Und Beteiligungsgesellschaft Mbh Drafting system for a knitting machine

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3019623A (en) * 1959-04-10 1962-02-06 Davis & Furber Pile fabric knitting machines
US3188834A (en) * 1962-12-10 1965-06-15 Glenoit Mills Means for feeding fibers to a pile fabric knitting machine
US3896636A (en) * 1972-11-06 1975-07-29 Glenoit Mills Sliver feeding means for high pile fabric circular knitting machines
US3877254A (en) * 1973-07-30 1975-04-15 Stevens & Co Inc J P Method and apparatus for knitting fabric from untwisted staple fibers
GB1452501A (en) * 1973-11-02 1976-10-13 York H Young B Knitting machines
US4111006A (en) * 1976-05-24 1978-09-05 Bunker Ramo Corporation Apparatus for producing patterned deep pile circular knitted fabrics
DE2853717A1 (en) * 1978-12-13 1980-07-03 Sulzer Morat Gmbh CIRCULAR KNITTING MACHINE FOR PRODUCING FLORAL GOODS WITH COMBED FIBERS
DE10251727A1 (en) * 2002-11-05 2004-05-13 Deutsches Institut für Textil- und Faserforschung Stuttgart - Stiftung des öffentlichen Rechts Textile process and assembly to impart a twist to slubbing fiber twist loose fiber ends in one direction opposite to core fibers
US7634920B2 (en) 2003-03-06 2009-12-22 Reinhard Koenig Knitted fabric, method and device for producing said fabric
DE102006006502B4 (en) 2006-02-13 2018-03-08 Reinhard König Spin knitting machine

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KR101407833B1 (en) 2014-06-17
BRPI0719646A2 (en) 2013-12-17
HK1134118A1 (en) 2010-04-16
BRPI0719646B1 (en) 2017-02-21
WO2008067804A1 (en) 2008-06-12
EP2122028A1 (en) 2009-11-25
WO2008067804A8 (en) 2010-10-14
US7748239B2 (en) 2010-07-06
US20100000263A1 (en) 2010-01-07
CN101548040A (en) 2009-09-30
KR20090090363A (en) 2009-08-25
CN101548040B (en) 2011-09-07
JP2010511803A (en) 2010-04-15

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