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EP1273688A1 - Eyed needle for warp knitting machines producing warp knits - Google Patents

Eyed needle for warp knitting machines producing warp knits Download PDF

Info

Publication number
EP1273688A1
EP1273688A1 EP02012657A EP02012657A EP1273688A1 EP 1273688 A1 EP1273688 A1 EP 1273688A1 EP 02012657 A EP02012657 A EP 02012657A EP 02012657 A EP02012657 A EP 02012657A EP 1273688 A1 EP1273688 A1 EP 1273688A1
Authority
EP
European Patent Office
Prior art keywords
needle
warp
knitting machines
eyelet
knits
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP02012657A
Other languages
German (de)
French (fr)
Other versions
EP1273688B1 (en
Inventor
Christoph Sven Larsén
Michael Reibl
Timo Reibl
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Timo und Michael Reibl GbR
Mattes and Ammann GmbH and Co KG
Original Assignee
Michael Reibl GbR
Timo Reibl GbR
Mattes and Ammann GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Michael Reibl GbR, Timo Reibl GbR, Mattes and Ammann GmbH and Co KG filed Critical Michael Reibl GbR
Publication of EP1273688A1 publication Critical patent/EP1273688A1/en
Application granted granted Critical
Publication of EP1273688B1 publication Critical patent/EP1273688B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B27/00—Details of, or auxiliary devices incorporated in, warp knitting machines, restricted to machines of this kind
    • D04B27/02—Warp-thread guides

Definitions

  • the invention relates to a perforated needle for knitting machines for Production of knitted fabrics according to the preamble of the main claim.
  • the present invention is therefore based on the object to improve the above-mentioned perforated needle in such a way that they are in particular for the production of electricity Knitted fabric with entrained carbon fiber is suitable and fiber tears largely avoids.
  • this object is achieved in a surprising manner
  • the hole needle according to the invention has a rounded Tip, which is easy by grinding the tip can produce, causing damage to the carbon fibers be avoided by such tips.
  • the running properties are improved by that the deflection of the fiber flow is significantly reduced.
  • the hole needle according to the invention enable for the first time the fast and easy action a plurality of carbon fibers in a carrier material, which consists in particular of plastic such as PE or PA.
  • a conventional hole needle 10 is shown, in two views with eyelet 12 from the side and from the front.
  • the carbon fiber passing through the eyelet is designated 14 and passes through the eyelet 12 with a yarn path change at an angle of about 90 °. It should be easy be clear that considerable friction in the eye 12 occurs, which led to frequent thread breaks or breaks.
  • the hole needle 14 is arranged between two latch needles 16.
  • the structure of the hole needle 18 according to the invention is that of a conventional sewing machine needle, which has a thread or fiber groove 20 which is along its longitudinal axis runs, recorded in the carbon filad 15 becomes. Due to the fact that this sewing machine hole needle according to the invention in their arrangement is offset by 90 ° horizontally and by the provision of the groove 20 and the arrangement of the eyelet 13, the thread pattern of the carbon fiber 15 is essential straightforward and has a much lower deflection as in the prior art, as shown in Fig. 1. To which is the perforated needle according to the invention at its lower End, where a tip should actually be provided, rounded, as indicated by the arrow 17. hereby is again ensured that the Kohlenstoffaden 15 not damaged by an existing tip or is even severed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
  • Sewing Machines And Sewing (AREA)
  • Treatment Of Fiber Materials (AREA)

Abstract

A yarn guide needle for warp knitting, comprises a groove (20) along its shaft leading to the eyelet (13), similar to a grooved sewing machine needle. The guide needle also has a rounded tip (17). To maintain the yarn path as straight as possible the guide is fitted in a position turned through 90 degrees from the usual position.

Description

Die Erfindung betrifft eine Lochnadel für Wirkmaschinen zur Herstellung von Gewirken nach dem Oberbegriff des Hauptanspruches.The invention relates to a perforated needle for knitting machines for Production of knitted fabrics according to the preamble of the main claim.

Derartige Lochnadeln sind im Stand der Technik in den unterschiedlichsten Ausführungsformen bekannt. Wirkversuche mit Carbon- oder Kohlenstoffasern haben jedoch zu Problemen geführt, da letztere häufig abrissen. Dieses wurde u.a. darauf zurückgeführt, daß die Umlenkung der Kohlenstoffaser durch die Öse relativ stark ist.Such hole needles are in the state of the art in the most diverse Embodiments known. Efficiency tests with Carbon or carbon fibers, however, have led to problems since the latter are often torn off. This was u.a. thereon attributed to the fact that the deflection of the carbon fiber through the eyelet is relatively strong.

Der vorliegenden Erfindung liegt deshalb die Aufgabe zugrunde, die eingangs genannte Lochnadel derart zu verbessern, daß sie sich insbesondere zur Herstellung stromleitfähiger Gewirke mit eingewirkter Kohlenstoffaser eignet und Faserrisse weitestgehend vermeidet.The present invention is therefore based on the object to improve the above-mentioned perforated needle in such a way that they are in particular for the production of electricity Knitted fabric with entrained carbon fiber is suitable and fiber tears largely avoids.

Erfindungsgemäß wird diese Aufgabe in überraschenderweise dadurch erreicht, daß man als Lochnadel den Aufbau einer herkömmlichen Nähmaschinennadel wählt, die eine längs zur Nadelachse bis zur Öse verlaufende Fadenrille aufweist. Außerdem besitzt die erfindungsgemäße Lochnadel eine abgerundete Spitze, die man durch Abschleifen der Spitze einfach herstellen kann, wodurch dann Beschädigungen der Kohlenstoffasern durch derartige Spitzen vermieden werden. Erfindungsgemäß werden die Laufeigenschaften dadurch verbessert, daß die Ablenkung des Faserverlaufes erheblich verringert wird.According to the invention, this object is achieved in a surprising manner This is achieved in that the construction of a hole needle as a conventional sewing machine needle selects one longitudinally to Needle axis extending to the eyelet thread groove. Furthermore the hole needle according to the invention has a rounded Tip, which is easy by grinding the tip can produce, causing damage to the carbon fibers be avoided by such tips. According to the invention the running properties are improved by that the deflection of the fiber flow is significantly reduced.

In verfahrensgemäßer Hinsicht dürfte für den Fachmann einleuchtend sein, daß die erfindungsgemäß aufgebaute Lochnadel um 90° horizontal versetzt in die Wirkmaschine eingesetzt werden muß, damit die gewünschte verringerte Ablenkung des Faserverlaufes erzielt wird. Die erfindungsgemäße Lochnadel ermöglichst erstmals das schnelle und problemlose Einwirken einer Vielzahl von Kohlenstoffasern in ein Trägermaterial, das insbesondere aus Kunststoff wie PE oder PA besteht.From a procedural point of view, it would be obvious to a person skilled in the art be that the inventively constructed hole needle offset by 90 ° horizontally inserted into the knitting machine must be for the desired reduced deflection of the Fiber course is achieved. The hole needle according to the invention enable for the first time the fast and easy action a plurality of carbon fibers in a carrier material, which consists in particular of plastic such as PE or PA.

Im folgenden wird ein bevorzugtes Ausführungsbeispiel anhand der Figuren zum besseren Verständnis der Erfindung näher erläutert.In the following, a preferred embodiment is based the figures for better understanding of the invention explained in more detail.

Es zeigt:

Fig. 1
einen schematischen Ausschnitt aus einer Anordnung verschiedener Nadeln in einer Wirkmaschine nach dem Stand der Technik; und
Fig. 2
eine mit der Fig. 1 vergleichbare schematische Darstellung, bei der die erfindungsgemäße Lochnadel eingesetzt wird.
It shows:
Fig. 1
a schematic section of an arrangement of different needles in a knitting machine according to the prior art; and
Fig. 2
a comparable with the Fig. 1 schematic representation in which the hole needle according to the invention is used.

In Fig. 1 ist eine übliche Lochnadel 10 gezeigt, und zwar in zwei Ansichten mit der Öse 12 von der Seite und von vorn. Die durch die Öse verlaufende Kohlenstoffaser ist mit 14 bezeichnet und durchläuft die Öse 12 mit einer Fadenverlaufsänderung in einem Winkel von etwa 90°. Es dürfte ohne weiteres einleuchten, daß erhebliche Reibung im Bereich der Öse 12 auftritt, was zu häufigen Fadenrissen oder -Brüchen führte. Der Vollständigkeit halber sei gesagt, daß die Lochnadel 14 zwischen zwei Zungennadeln 16 angeordnet ist. In Fig. 1, a conventional hole needle 10 is shown, in two views with eyelet 12 from the side and from the front. The carbon fiber passing through the eyelet is designated 14 and passes through the eyelet 12 with a yarn path change at an angle of about 90 °. It should be easy be clear that considerable friction in the eye 12 occurs, which led to frequent thread breaks or breaks. For completeness, it should be said that the hole needle 14 is arranged between two latch needles 16.

Das gleiche ist der Fall bei der erfindungsgemäßen Lochnadel 18 der Fig. 2, die ebenfalls zwischen zwei Zungennadeln 16 im Bereich Ihres unteren Endes angeordnet ist. Die erfindungsgemäße Lochnadel 18 weist ebenfalls im Bereich ihres unteren Endes eine Öse 13 auf, die eine längliche, ovale Form besitzt. Der Aufbau der erfindungsgemäßen Lochnadel 18 ist der einer herkömmlichen Nähmaschinennadel, die eine Faden- oder Faserrille 20 besitzt, welche entlang ihrer Längsachse verläuft, in der der Kohlenstoffaden 15 aufgenommen wird. Dadurch, daß diese erfindungsgemäße Nähmaschinen-Lochnadel in ihrer Anordnung um 90° horizontal versetzt ist und durch das Vorsehen der Nut 20 und die Anordnung der Öse 13, ist der Fadenverlauf der Kohlenstoffaser 15 wesentlich geradliniger und besitzt eine wesentlich geringere Ablenkung als beim Stand der Technik, wie er in Fig. 1 gezeigt wird. Zu dem ist die erfindungsgemäße Lochnadel an ihrem unteren Ende, wo eigentlich eine Spitze vorgesehen sein sollte, abgerundet, wie es durch den Pfeil 17 angedeutet ist. Hierdurch wird wiederum sichergestellt, daß der Kohlenstoffaden 15 nicht durch eine etwa vorhandene Spitze beschädigt oder gar durchgetrennt wird.The same is the case with the perforated needle according to the invention 18 of FIG. 2, which also between two latch needles 16 is located in the area of your lower end. The inventive Lochnadel 18 also has in the area of her lower end an eye 13, which is an elongated, oval Owns shape. The structure of the hole needle 18 according to the invention is that of a conventional sewing machine needle, which has a thread or fiber groove 20 which is along its longitudinal axis runs, recorded in the carbon filad 15 becomes. Due to the fact that this sewing machine hole needle according to the invention in their arrangement is offset by 90 ° horizontally and by the provision of the groove 20 and the arrangement of the eyelet 13, the thread pattern of the carbon fiber 15 is essential straightforward and has a much lower deflection as in the prior art, as shown in Fig. 1. To which is the perforated needle according to the invention at its lower End, where a tip should actually be provided, rounded, as indicated by the arrow 17. hereby is again ensured that the Kohlenstoffaden 15 not damaged by an existing tip or is even severed.

Claims (1)

Lochnadel für Wirkmaschinen zur Herstellung von Gewirken, insbesondere stromleitfähiger Gewirke mit eingewirkter Kohlenstoffaser, mit einem Nadelschaft und einer Öse zum Durchtritt für die Faser, gekennzeichnet durch den Aufbau einer herkömmlichen Nähmaschinennadel mit einer längs zur Nadelachse bis zur Öse verlaufenden Fadenrille, wobei die Spitze der Nadel in abgerundeter Form ausgebildet ist.Puncture needle for knitting machines for knitting, in particular electroconductive knitted fabrics with knitted carbon fiber, with a needle shank and an eyelet for the passage of the fiber, characterized by the construction of a conventional sewing machine needle with a longitudinally extending to the needle axis to the eyelet thread groove, the tip of the needle is formed in a rounded shape.
EP02012657A 2001-07-04 2002-06-07 use of an eyed needle for warp knitting machines producing warp knits Expired - Lifetime EP1273688B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE20111066U 2001-07-04
DE20111066U DE20111066U1 (en) 2001-07-04 2001-07-04 Needle for knitting machines for the production of knitted fabrics

Publications (2)

Publication Number Publication Date
EP1273688A1 true EP1273688A1 (en) 2003-01-08
EP1273688B1 EP1273688B1 (en) 2006-11-22

Family

ID=7958894

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02012657A Expired - Lifetime EP1273688B1 (en) 2001-07-04 2002-06-07 use of an eyed needle for warp knitting machines producing warp knits

Country Status (4)

Country Link
EP (1) EP1273688B1 (en)
AT (1) ATE346182T1 (en)
DE (2) DE20111066U1 (en)
ES (1) ES2275780T3 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103938362B (en) * 2014-05-14 2016-05-11 福建省鑫港纺织机械有限公司 A kind of nook closing member guiding mechanism of tricot machine

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH394458A (en) * 1960-09-18 1965-11-30 Palange Walter Warp knitting machine
EP0057578A1 (en) * 1981-01-29 1982-08-11 National Research Development Corporation Knitting process and machine
DE4446953A1 (en) * 1993-12-28 1995-06-29 Etsuzo Sasaki Yarn guide for a Jacquard knitter

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH394458A (en) * 1960-09-18 1965-11-30 Palange Walter Warp knitting machine
EP0057578A1 (en) * 1981-01-29 1982-08-11 National Research Development Corporation Knitting process and machine
DE4446953A1 (en) * 1993-12-28 1995-06-29 Etsuzo Sasaki Yarn guide for a Jacquard knitter

Also Published As

Publication number Publication date
ATE346182T1 (en) 2006-12-15
DE20111066U1 (en) 2001-09-20
ES2275780T3 (en) 2007-06-16
EP1273688B1 (en) 2006-11-22
DE50208747D1 (en) 2007-01-04

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