EP1645670A1 - Latch needle - Google Patents

Latch needle Download PDF

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Publication number
EP1645670A1
EP1645670A1 EP05019520A EP05019520A EP1645670A1 EP 1645670 A1 EP1645670 A1 EP 1645670A1 EP 05019520 A EP05019520 A EP 05019520A EP 05019520 A EP05019520 A EP 05019520A EP 1645670 A1 EP1645670 A1 EP 1645670A1
Authority
EP
European Patent Office
Prior art keywords
tongue
needle
spring
slot
latch
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
EP05019520A
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German (de)
French (fr)
Other versions
EP1645670B1 (en
Inventor
Eric Jürgens
Andreas Dietz
Wolfgang Schmoll
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.)
Groz Beckert KG
Original Assignee
Groz Beckert KG
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Publication date
Application filed by Groz Beckert KG filed Critical Groz Beckert KG
Publication of EP1645670A1 publication Critical patent/EP1645670A1/en
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Publication of EP1645670B1 publication Critical patent/EP1645670B1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21G—MAKING NEEDLES, PINS OR NAILS OF METAL
    • B21G1/00—Making needles used for performing operations
    • B21G1/02—Making needles used for performing operations of needles with eyes, e.g. sewing-needles, sewing-awls
    • B21G1/04—Making needles used for performing operations of needles with eyes, e.g. sewing-needles, sewing-awls of needles specially adapted for use in machines or tools
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B35/00—Details of, or auxiliary devices incorporated in, knitting machines, not otherwise provided for
    • D04B35/02—Knitting tools or instruments not provided for in group D04B15/00 or D04B27/00
    • D04B35/04—Latch needles

Definitions

  • the invention relates to a latch needle, in particular a machine knitting needle, with spring-supported tongue.
  • tongue needles have always been used to facilitate a simple stitch formation process.
  • a latch needle is known, for example, from US Pat. No. 3,453,845.
  • the latch needle has a shaft, on the end of which a hook and in front of the hook a tongue slot are formed.
  • a tongue which serves to open and close the hook, protrudes with one end in the tongue slot and is pivotally mounted there. She can swing into a closed position in which she rests with her spoon on the tip of the hook. To open the hook, it can pivot in reserve, where it is as far as possible pivoted away from the hook and rests against the shaft or at least close to this.
  • the tongue slot is generally continuous, i. he is open to the back of the needle. Regardless, accumulating in the tongue slot dirt can affect the function of the latch needle.
  • the tongue slot is designed to reduce the tendency to fouling in a special way.
  • the tongue slot widens starting from a constriction both to the needle breast and the needle back.
  • the extension concerns both the needle longitudinal direction and the transverse direction. Through this to the needle back existing funnel-like expansion, the formation of dirt accumulation should be prevented or at least mitigated by the dirt can escape better from the needle slot.
  • tongue needles with spring-loaded tongue have been developed.
  • the latch needle has a tongue slot, which widens to the needle breast with respect to the shaft longitudinal direction.
  • To the back of the needle is the Tongue slit limited parallelflankig.
  • At the needle breast to be pointed narrow diverging surfaces of the tongue slot spring bearing pockets are formed for receiving the ends of a tongue spring formed as a tongue spring.
  • the tongue spring is inserted from the Nadelbrustseite forth in the tongue slot and threaded by means of an auxiliary tool, which is inserted into the tongue slot in its desired target position. It then lies with its underside against the spring bearing pockets and with its upper side against the end of the tongue.
  • the tongue slot must be relatively spacious to allow threading the tongue spring.
  • the tongue spring is only moderately secured in the spring bearing pockets in the depth of the tongue slot. It may happen that the tongue spring slips and / or lost and the needle no longer works properly.
  • the latch needle according to the invention has a tongue slot, which expands toward the needle back preferably with respect to the needle longitudinal direction and, if necessary, additionally in the transverse direction.
  • a tongue spring is arranged in the widening region of the tongue slot.
  • Corresponding spring bearing pockets thus open towards the back of the needle.
  • the tongue spring can thus initially inserted from the needle back forth simply in the tongue slot and then attached eg by a stamping process. A bending of the tongue spring during insertion, such as in DE-AS 1113537, is therefore not required.
  • the latch needle can therefore be manufactured in high precision with tight manufacturing tolerances.
  • the new needle configuration has significant manufacturing advantages.
  • the flared in the direction of the needle back tongue slot in the form of a downwardly open funnel has the advantage that the tendency for dirt deposits in the tongue slot is significantly reduced and that in the case of deposits this easily by the tongue movement from the downwardly open Funnel can be eliminated.
  • slot length at the needle back, including possibly existing spring bearing pockets is at least as large as the length of the relaxed tongue spring.
  • latch needles In the case of prior art latch needles, it may occasionally occur that the tongue spring slips or falls completely out of the latch needle. If this occurs, proper function of the latch needle is unlikely to be possible. It has been shown that the latch needle according to the invention with the tongue spring side tongue spring is much less sensitive to the loss or misalignment of the tongue spring. The latch needle according to the invention allow the achievement of very high knitting speeds and also have a high reliability.
  • the tongue spring can serve to define preferred tongue positions.
  • the tongue then has corresponding, the preferred positions defining contact surfaces, which are designed as flat surfaces.
  • the tongue spring is preferably formed substantially stretched. It can also be completely straight.
  • the tongue spring may also have a more or less curved, adapted to the end of the tongue spring portion and this adjacent curved portions to push the tongue, for example, only from their end positions and otherwise to brake frictionally. Also for such tongue springs, the inventive concept presented here is suitable.
  • the tongue spring is preferably held positively in the tongue slot.
  • a stop may be formed by embossing or similar accumulation of material or lateral crimping, which narrow the spring bearing pockets to the needle back.
  • the advantage of this form of attachment is that they allow a limited axial mobility of the tongue spring and thus a longitudinal clearance, so that the tongue spring can move limited in bending in the spring bearing pockets.
  • Another advantage of this form of attachment is that the spring force, which is exerted by the tongue spring on the tongue, can be influenced by the arrangement or the position of the embossing points.
  • the tongue spring can also be otherwise secured, for example by laser welding. It can also be mixed forms are used, in which the tongue spring materially connected at one end to the shaft, for example, welded, and is secured form-fitting manner with its other end.
  • the tongue slot which widens toward the needle back can expand in addition to the needle breast. Its measured in needle length direction shortest point is then between the needle breast and needle back.
  • the slot length at the needle face can be sized so that the tongue slot is completely or at least almost completely covered by the tongue towards the needle interior when the tongue is in the closed position. This reduces the ingress of dirt into the tongue slot. There is almost no gap through which dirt from the closed hook interior could get out into the tongue slot.
  • the slot end may form a limit to the pivotal movement of the tongue.
  • a contact surface for the tongue can be formed at the end of the tongue slot. The position of the contact surface is preferably dimensioned such that the tongue bears straight against the contact surface, even if the tongue spoon hits the point of the hook.
  • the abutment surface is displaced slightly back against this position, so that the spoon of the tongue can rest on the hook tip, wherein the tongue just barely touches the abutment surface at the end of the tongue slot.
  • This configuration has the advantage that the contact surface does not interfere with the correct closing of the hook by the tongue, even with unavoidable production tolerances.
  • it prevents that in a partially worn latch needle whose tongue has an increased lateral play, the tongue gets under the hook.
  • partially worn latch needles can still be knitted safely, which significantly increases the life of such latch needles.
  • a shortening of the tongue slot in the region of the hook on the needle breast side lead to a stiffening of the shaft, whereby the latch needle is stable in the region of the slot.
  • the guidance of the tongue in the tongue slot can be improved, whereby lesser demands are placed on the bearing means of the tongue. This can be formed for example by pushed out of the side walls pin or half pin.
  • the length of the tongue slot on the side of the needle is dimensioned such that the tongue located in the reserve can abut on the shaft.
  • an additional recess for receiving the spoon formed on the tongue can be provided at the end of the tongue slot.
  • Such recesses and shapes no longer interfere with the spring attachment, i. for example, the spring storage bags.
  • FIG. 1 illustrates a latch needle 1 which can be used primarily as a machine knitting needle or in a similar form as a knitting needle or the like.
  • the latch needle 1 has a basic body 2 delimited by two flat sides, from which a shaft 3 extends away.
  • the shaft 3 carries at its free end a hook 4, whose tip 5 faces the base body 2.
  • the lower in Figure 2 from the hook 4 of the latch needle 1 and from its foot 6 narrow side of the base body 2 and the shaft 3 forms the needle back 7.
  • the upper side in Figure 1 narrow side of the shaft 3 forms at least in the immediate vicinity of the hook 4, a needle breast 8.
  • the shaft 3 is provided with a tongue slot 9, which is visible through the longitudinal section illustrated in FIG.
  • the tongue slot 9 serves to receive one end of a tongue 11, wherein it is pivotally supported by a bearing device 12.
  • the storage facility is provided by a storage means 13 e.g. formed a bearing pin, which passes through a tongue 11 formed in the end tongue hole 14.
  • the tongue 11 is pivotable back and forth so that they rest with their spoon 15 on the hook tip 5 or can be pivoted in reserve.
  • On the base body 2 further elements may be formed or fixed, such as a laterally mounted cap spring 16 which is connected to the flat side of the base body 2 and having a resilient finger, the tip of which bears against the shaft 3 under bias.
  • the bearing means 13 of the bearing device 12 can be subdivided into two half-pins 13 a, 13 b, which delimit the tongue slot 9 Side cheeks of the shaft 3 are pressed inwardly to form in the tongue hole 14 cross-projections.
  • FIG. 2 illustrates in dashed lines a plurality of pivot positions of the tongue 11.
  • the tongue slot 9 expands, in particular FIG. 2 as well as FIGS. 3 and 4, towards the needle back 7. It is bounded at its axially front and axially rear ends by narrow surfaces 17, 18 which diverge away from each other, i. together form an angle which opens downwards in FIG. If the surfaces 17, 18 are curved, the center of their radius of curvature is preferably below the needle back 7.
  • the tongue spring 22 has, as Figure 5 or 6 reveals, for example, a nearly round cross section or alternatively also a rectangular cross section. It is made of spring material, such as spring steel, formed and substantially stretched. It is located with a central, preferably flat, region at the located in the tongue slot 9 end of the tongue 11 and that preferably under bias. On the tongue 11 can here contact surfaces 23, 24 are formed, which stabilize a stable supine position of the tongue 11 ( Figure 4) or a closed position ( Figure 3) adjacent position.
  • the spring bearing pockets 19, 21 are substantially open towards the needle back 9.
  • the tongue spring 22 is located with its ends 25, 26 in these spring bearing pockets 19, 21, wherein each substantially parallel, transversely to the needle longitudinal direction directed end faces 27, 28 of the spring bearing pockets 19, 21 from each other have a distance which is slightly larger than the length of Tongue spring 22.
  • the spring bearing pockets 19, 21 are closed towards the needle back 7, for example by embossing points 29, 31.
  • the embossments can also be made by e.g. be replaced by laser-generated amalgamations or the like. As illustrated in FIG.
  • lateral crimping zones 29a can also be formed, in which the shank 3 is compressed laterally directly at the needle back in order to close the spring-loaded pocket 19.
  • embossing points can be additionally attached to the pinching zones 29a.
  • the spring bearing pocket 19 has two embossments 29 which are formed on the two mutually parallel side edges of the spring bearing pocket 19 and facing each other to reduce the clear width between the two side edges on the needle back 7 ,
  • the spring bearing pocket 21 and its embossing points 31 With the size and the depth of the respective embossing points 29, 31, measured from the needle back 7, can the bias of the tongue spring 22 in their spring bearing pockets 19, 21 regulate.
  • the tongue slot 9 can likewise expand with respect to the needle longitudinal direction. This applies in particular to the side away from the hook 4 page.
  • an example widened slot portion 32 may connect to the tongue slot, which, as Figure 4 illustrates, allows the transfer of the tongue 11 in an investment position in which the tongue 11 contacts the shaft 3. This position is shown by dashed lines in Figure 4 for the tongue 11.
  • the stable return position of the tongue 11, in which the tongue 11 rests with its contact surface 23 on the tongue spring 22 is shown in Figure 4 with a continuous line.
  • the tongue slot 9 is preferably dimensioned so long or short in terms of its axial length and the position of its hook-side end needle side, that the tongue 11 almost closes the tongue slot 9 in the closed position.
  • Figure 2 illustrates in a first dashed line I of the tongue 11, the stable, the hook 4 adjacent rest position of the tongue 11. It is the contact surface 24 on the tongue spring 22 at. Starting from this position, the tongue 11 can be pressed against the hook 4 or the hook tip 5 until the spoon 15 of the tongue 11 rests with its inside against the hook 4. This position is indicated in Figure 2 as position II, wherein the tongue 11 is again shown in dashed lines.
  • a new concept of a latch needle 1 is based on a rear attachment of the tongue spring 22 in the tongue slot 9 of the latch needle 1.
  • the latch needle 1 has for this purpose from the needle back 7 forth accessible spring bearing pockets 19, 21 or other suitable for receiving the ends 25, 26 of the tongue spring 22 suitable structures.
  • the spring bearing pockets 19, 21 are closed to the needle back 7 at least so far that the ends 25, 26 of the tongue spring 22 are held positively or at least captively in the spring bearing pockets 19, 21.
  • This latch needle shows a reduced tolerance sensitivity in the production.
  • the presented needle concept allows further improvements, which meet the reliability and longevity of the latch needle.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Knitting Machines (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)

Abstract

A textile knitting machine has a tongue needle (1) that extends from the rear face anchorage of the tongue spring (22) into the needle slit (9). The needle has spring attachment detents (19, 21) part-closed towards the spring rear face (7) and retaining the spring ends (25, 26). The spring tongue ends are retained by the attachment detents. The detents are formed by a press. The tongue slit widens towards the needle breast. The tongue slit has side cheeks.

Description

Die Erfindung betrifft eine Zungennadel, insbesondere eine Maschinenstricknadel, mit federunterstützter Zunge.The invention relates to a latch needle, in particular a machine knitting needle, with spring-supported tongue.

Zur Maschenbildung werden seit jeher gern Zungennadeln eingesetzt, die einen einfachen Maschenbildungsprozess ermöglichen. Eine solche Zungennadel ist beispielsweise aus der US-PS 3 453 845 bekannt. Die Zungennadel weist einen Schaft auf, an dem endseitig ein Haken und vor dem Haken ein Zungenschlitz ausgebildet sind. Eine Zunge, die zum Öffnen und Schließen des Haken dient, ragt mit einem Ende in den Zungenschlitz und ist dort schwenkbar gelagert. Sie kann in eine Schließstellung schwenken, in der sie mit ihrem Löffel auf der Hakenspitze aufliegt. Um den Haken zu öffnen kann sie in Rücklage schwenken, bei der sie weitest möglich von dem Haken weg geschwenkt ist und an dem Schaft anliegt oder zumindest nahe bei diesem steht.For loop formation, tongue needles have always been used to facilitate a simple stitch formation process. Such a latch needle is known, for example, from US Pat. No. 3,453,845. The latch needle has a shaft, on the end of which a hook and in front of the hook a tongue slot are formed. A tongue, which serves to open and close the hook, protrudes with one end in the tongue slot and is pivotally mounted there. She can swing into a closed position in which she rests with her spoon on the tip of the hook. To open the hook, it can pivot in reserve, where it is as far as possible pivoted away from the hook and rests against the shaft or at least close to this.

Der Zungenschlitz ist in der Regel durchgehend ausgebildet, d.h. er ist zu dem Nadelrücken hin offen. Unabhängig davon kann sich in dem Zungenschlitz ansammelnder Schmutz die Funktion der Zungennadel beeinträchtigen.The tongue slot is generally continuous, i. he is open to the back of the needle. Regardless, accumulating in the tongue slot dirt can affect the function of the latch needle.

Des Weiteren ist beispielsweise aus der DE-PS 586678 eine Zungennadel bekannt, deren Zungenschlitz zur Verringerung der Verschmutzungsneigung auf besondere Weise gestaltet ist. Der Zungenschlitz erweitert sich ausgehend von einer Engstelle sowohl zur Nadelbrust als auch zu dem Nadelrücken hin. Die Erweiterung betrifft sowohl die Nadellängsrichtung als auch die Querrichtung. Durch diese zum Nadelrücken hin vorhandene trichterartige Erweiterung soll die Ausbildung von Schmutzansammlungen verhindert oder zumindest gemindert werden, indem der Schmutz besser aus dem Nadelschlitz austreten kann.Furthermore, for example, from DE-PS 586678 a latch needle is known, the tongue slot is designed to reduce the tendency to fouling in a special way. The tongue slot widens starting from a constriction both to the needle breast and the needle back. The extension concerns both the needle longitudinal direction and the transverse direction. Through this to the needle back existing funnel-like expansion, the formation of dirt accumulation should be prevented or at least mitigated by the dirt can escape better from the needle slot.

Bei Zungennadeln mit frei beweglichen Zungen kann es vorkommen, dass die Zungen durch Rückprallvorgänge oder sonstige äußere Einflüsse in eine undefinierte Lage geraten. Um dies zu vermeiden sind Zungennadeln mit federunterstützter Zunge entwickelt worden. Eine solche offenbart die DE-AS 1113537. Die Zungennadel weist einen Zungenschlitz auf, der sich zu der Nadelbrust hin bezüglich der Schaftlängsrichtung erweitert. Zu dem Nadelrücken hin ist der Zungenschlitz parallelflankig begrenzt. An den auf die Nadelbrust zu weisenden schmalen divergierenden Flächen des Zungenschlitzes sind Federlagertaschen zur Aufnahme der Enden einer als Blattfeder ausgebildeten Zungenfeder ausgebildet. Die Zungenfeder wird von der Nadelbrustseite her in den Zungenschlitz eingeführt und mittels eines Hilfswerkzeugs, das in den Zungenschlitz eingeführt wird, in seine gewünschte Sollposition eingefädelt. Sie liegt dann mit ihrer Unterseite an den Federlagertaschen und mit ihrer Oberseite an dem Ende der Zunge an.In the case of latch needles with freely movable tongues, it may happen that the tongues fall into an undefined position due to rebounding or other external influences. To avoid this, tongue needles with spring-loaded tongue have been developed. Such discloses the DE-AS 1113537. The latch needle has a tongue slot, which widens to the needle breast with respect to the shaft longitudinal direction. To the back of the needle is the Tongue slit limited parallelflankig. At the needle breast to be pointed narrow diverging surfaces of the tongue slot spring bearing pockets are formed for receiving the ends of a tongue spring formed as a tongue spring. The tongue spring is inserted from the Nadelbrustseite forth in the tongue slot and threaded by means of an auxiliary tool, which is inserted into the tongue slot in its desired target position. It then lies with its underside against the spring bearing pockets and with its upper side against the end of the tongue.

Bei diesem Grundaufbau muss der Zungenschlitz relativ geräumig sein, um ein Einfädeln der Zungenfeder zu ermöglichen. Außerdem ist die Zungenfeder in den Federlagertaschen in der Tiefe des Zungenschlitzes nur mäßig gesichert. Es kann vorkommen, dass die Zungenfeder verrutscht und/oder verloren geht und die Nadel nicht mehr korrekt arbeitet.In this basic design, the tongue slot must be relatively spacious to allow threading the tongue spring. In addition, the tongue spring is only moderately secured in the spring bearing pockets in the depth of the tongue slot. It may happen that the tongue spring slips and / or lost and the needle no longer works properly.

Davon ausgehend ist es Aufgabe der Erfindung, eine verbesserte Zungennadel zu schaffen.On this basis, it is an object of the invention to provide an improved latch needle.

Diese Aufgabe wird mit der Zungennadel nach Anspruch 1 gelöst:This object is achieved with the latch needle according to claim 1:

Die erfindungsgemäße Zungennadel weist einen Zungenschlitz auf, der sich zu dem Nadelrücken hin vorzugsweise bezüglich der Nadellängsrichtung und bedarfsweise zusätzlich in Querrichtung erweitert. In dem sich erweiternden Bereich des Zungenschlitzes ist eine Zungenfeder angeordnet. Entsprechende Federlagertaschen öffnen sich somit zu dem Nadelrücken hin. Die Zungenfeder kann somit zunächst von dem Nadelrücken her einfach in den Zungenschlitz eingelegt und dann z.B. durch einen Prägevorgang befestigt werden. Ein Verbiegen der Zungenfeder beim Einführen, wie beispielsweise bei der DE-AS 1113537, ist somit nicht erforderlich. Die Zungennadel kann deshalb in hoher Präzision mit engen Fertigungstoleranzen hergestellt werden. Somit hat die neue Nadelkonfiguration erhebliche fertigungstechnische Vorteile.The latch needle according to the invention has a tongue slot, which expands toward the needle back preferably with respect to the needle longitudinal direction and, if necessary, additionally in the transverse direction. In the widening region of the tongue slot a tongue spring is arranged. Corresponding spring bearing pockets thus open towards the back of the needle. The tongue spring can thus initially inserted from the needle back forth simply in the tongue slot and then attached eg by a stamping process. A bending of the tongue spring during insertion, such as in DE-AS 1113537, is therefore not required. The latch needle can therefore be manufactured in high precision with tight manufacturing tolerances. Thus, the new needle configuration has significant manufacturing advantages.

Außerdem hat der in Richtung des Nadelrückens sich erweiternde Zungenschlitz in Form eines nach unten offenen Trichters den Vorteil, dass die Tendenz, dass sich Schmutz im Zungenschlitz ablagert, erheblich vermindert wird und dass im Falle von Ablagerungen diese durch die Zungenbewegung leicht aus dem nach unten offenen Trichter ausgeschieden werden können.In addition, the flared in the direction of the needle back tongue slot in the form of a downwardly open funnel has the advantage that the tendency for dirt deposits in the tongue slot is significantly reduced and that in the case of deposits this easily by the tongue movement from the downwardly open Funnel can be eliminated.

Ein wesentlicher Aspekt der vorliegenden Erfindung ist, dass die Schlitzlänge an dem Nadelrücken einschließlich evtl. vorhandener Federlagertaschen zumindest so groß ist wie die Länge der entspannten Zungenfeder.An essential aspect of the present invention is that the slot length at the needle back, including possibly existing spring bearing pockets is at least as large as the length of the relaxed tongue spring.

Bei Zungennadeln nach dem Stand der Technik kann es gelegentlich vorkommen, dass die Zungenfeder verrutscht oder ganz aus der Zungennadel herausfällt. Tritt dies auf, ist eine ordnungsgemäße Funktion der Zungennadel mit großer Wahrscheinlichkeit nicht mehr möglich. Es hat sich gezeigt, dass die erfindungsgemäße Zungennadel mit nadelrückenseitig befestigter Zungenfeder wesentlich weniger empfindlich gegen den Verlust oder die Dejustage der Zungenfeder ist. Die erfindungsgemäßen Zungennadel gestatten die Erzielung sehr hoher Strickgeschwindigkeiten und weisen zudem eine hohe Zuverlässigkeit auf.In the case of prior art latch needles, it may occasionally occur that the tongue spring slips or falls completely out of the latch needle. If this occurs, proper function of the latch needle is unlikely to be possible. It has been shown that the latch needle according to the invention with the tongue spring side tongue spring is much less sensitive to the loss or misalignment of the tongue spring. The latch needle according to the invention allow the achievement of very high knitting speeds and also have a high reliability.

Die Zungenfeder kann zur Festlegung bevorzugter Zungenstellungen dienen. Die Zunge hat dann entsprechende, die Vorzugsstellungen festlegende Anlageflächen, die als Planflächen ausgebildet sind. In diesem Fall ist die Zungenfeder vorzugsweise im Wesentlichen gestreckt ausgebildet. Sie kann auch vollkommen gerade sein. Die Zungenfeder kann jedoch auch einen mehr oder weniger stark gekrümmten, an das Ende der Zungenfeder angepassten Abschnitt und diesem benachbarte gebogene Bereiche aufweisen, um die Zunge beispielsweise lediglich von ihren Endstellungen weg zu drücken und ansonsten reibschlüssig zu bremsen. Auch für solche Zungenfedern eignet sich das hier vorgestellte erfindungsgemäße Konzept.The tongue spring can serve to define preferred tongue positions. The tongue then has corresponding, the preferred positions defining contact surfaces, which are designed as flat surfaces. In this case, the tongue spring is preferably formed substantially stretched. It can also be completely straight. However, the tongue spring may also have a more or less curved, adapted to the end of the tongue spring portion and this adjacent curved portions to push the tongue, for example, only from their end positions and otherwise to brake frictionally. Also for such tongue springs, the inventive concept presented here is suitable.

Die Zungenfeder ist in dem Zungenschlitz vorzugsweise formschlüssig gehalten. Ein solcher Halt kann durch Prägestellen oder ähnliche Materialansammlungen oder seitliche Quetschstellen gebildet sein, die die Federlagertaschen zu dem Nadelrücken hin verengen. Der Vorzug dieser Befestigungsform liegt darin, dass sie eine begrenzte axiale Beweglichkeit der Zungenfeder und somit ein Längsspiel zulassen, so dass sich die Zungenfeder beim Durchbiegen in den Federlagertaschen begrenzt bewegen kann. Ein weiterer Vorteil dieser Befestigungsform liegt darin, dass durch die Anordnung bzw. die Position der Prägestellen die Federkraft, welche von der Zungenfeder auf die Zunge ausgeübt wird, beeinflussbar ist. So kann z.B. bei gleicher Federgeometrie mit einem großen Abstand der Prägestellen von der Zungenlagerung eine weiche Federwirkung und bei kleinen Abständen der Prägestelle von der Zungenlagerung eine eher harte Federwirkung erzielt werden. Ist dies nicht erforderlich, kann die Zungenfeder auch anderweitig, beispielsweise durch Laserschweißen befestigt sein. Es können auch gemischte Formen zur Anwendung kommen, bei denen die Zungenfeder an einem Ende mit dem Schaft stoffschlüssig verbunden, beispielsweise verschweißt, und mit ihrem anderen Ende formschlüssig gesichert ist. Der sich zu dem Nadelrücken hin erweiternde Zungenschlitz kann sich zusätzlich zu der Nadelbrust hin erweitern. Seine in Nadellängsrichtung gemessene kürzeste Stelle liegt dann zwischen Nadelbrust und Nadelrücken. Dennoch kann die Schlitzlänge an der Nadelbrust so bemessen werden, dass der Zungenschlitz von der Zunge zu dem Nadelinnenraum hin vollständig oder wenigstens fast vollständig abgedeckt wird, wenn sich die Zunge in Schließlage befindet. Dadurch wird das Eintreten von Schmutz in den Zungenschlitz gemindert. Es besteht nahezu keine Lücke, durch die Schmutz aus dem geschlossenen Hakeninnenraum heraus in den Zungenschlitz gelangen könnte. Außerdem kann das Schlitzende eine Begrenzung für die Schwenkbewegung der Zunge bilden. Zu diesem Zweck kann an dem Ende des Zungenschlitzes eine Anlagefläche für die Zunge ausgebildet sein. Die Position der Anlagefläche ist vorzugsweise so bemessen, dass die Zunge gerade an der Anlagefläche anliegt, wenn auch der Zungenlöffel auf die Hakenspitze trifft. Vorzugsweise aber wird die Anlagefläche gegen diese Position etwas zurück versetzt, so dass der Löffel der Zunge auf der Hakenspitze aufliegen kann, wobei die Zunge die Anlagefläche an dem Ende des Zungenschlitzes gerade noch nicht berührt. Diese Konfiguration hat den Vorzug, dass die Anlagefläche auch bei unvermeidbar auftretenden Produktionstoleranzen das korrekte Schließen des Hakens durch die Zunge nicht stört. Andererseits verhindert sie, dass bei einer teilverschlissenen Zungennadel, deren Zunge ein erhöhtes seitliches Spiel aufweist, die Zunge unter den Haken gelangt. Somit kann auch mit teilverschlissenen Zungennadeln noch sicher gestrickt werden, was die Lebensdauer solcher Zungennadeln wesentlich erhöht.The tongue spring is preferably held positively in the tongue slot. Such a stop may be formed by embossing or similar accumulation of material or lateral crimping, which narrow the spring bearing pockets to the needle back. The advantage of this form of attachment is that they allow a limited axial mobility of the tongue spring and thus a longitudinal clearance, so that the tongue spring can move limited in bending in the spring bearing pockets. Another advantage of this form of attachment is that the spring force, which is exerted by the tongue spring on the tongue, can be influenced by the arrangement or the position of the embossing points. Thus, for example, with the same spring geometry with a large distance of the embossing points of the tongue bearing a soft spring effect and at small distances of the embossing of the tongue bearing a rather hard spring action can be achieved. If this is not necessary the tongue spring can also be otherwise secured, for example by laser welding. It can also be mixed forms are used, in which the tongue spring materially connected at one end to the shaft, for example, welded, and is secured form-fitting manner with its other end. The tongue slot which widens toward the needle back can expand in addition to the needle breast. Its measured in needle length direction shortest point is then between the needle breast and needle back. Nevertheless, the slot length at the needle face can be sized so that the tongue slot is completely or at least almost completely covered by the tongue towards the needle interior when the tongue is in the closed position. This reduces the ingress of dirt into the tongue slot. There is almost no gap through which dirt from the closed hook interior could get out into the tongue slot. In addition, the slot end may form a limit to the pivotal movement of the tongue. For this purpose, a contact surface for the tongue can be formed at the end of the tongue slot. The position of the contact surface is preferably dimensioned such that the tongue bears straight against the contact surface, even if the tongue spoon hits the point of the hook. Preferably, however, the abutment surface is displaced slightly back against this position, so that the spoon of the tongue can rest on the hook tip, wherein the tongue just barely touches the abutment surface at the end of the tongue slot. This configuration has the advantage that the contact surface does not interfere with the correct closing of the hook by the tongue, even with unavoidable production tolerances. On the other hand, it prevents that in a partially worn latch needle whose tongue has an increased lateral play, the tongue gets under the hook. Thus, even with partially worn latch needles can still be knitted safely, which significantly increases the life of such latch needles.

Außerdem kann eine Verkürzung des Zungenschlitzes im Bereich des Hakens an der Nadelbrustseite zu einer Aussteifung des Schafts führen, wodurch die Zungennadel im Bereich des Schlitzes stabiler wird. Zusätzlich kann die Führung der Zunge in dem Zungenschlitz verbessert werden, wodurch geringere Anforderungen an die Lagereinrichtung der Zunge gestellt werden. Diese kann beispielsweise durch aus den Seitenwangen heraus gedrückte Zapfen oder Halbzapfen gebildet sein.In addition, a shortening of the tongue slot in the region of the hook on the needle breast side lead to a stiffening of the shaft, whereby the latch needle is stable in the region of the slot. In addition, the guidance of the tongue in the tongue slot can be improved, whereby lesser demands are placed on the bearing means of the tongue. This can be formed for example by pushed out of the side walls pin or half pin.

Hinsichtlich der Rücklage der Zunge wird die nadelbrustseitige Länge des Zungenschlitzes so bemessen, dass die in Rücklage befindliche Zunge an dem Schaft anliegen kann. Dazu kann an dem Ende des Zungenschlitzes eine zusätzliche Ausnehmung zur Aufnahme des an der Zunge ausgebildeten Löffels vorgesehen sein. Derartige Ausnehmungen und Formgebungen interferieren nun nicht mehr mit der Federbefestigung, d.h. beispielsweise den Federlagertaschen. Diese sind erfindungsgemäß zu der Nadelrückseite hin angeordnet.With regard to the reserve of the tongue, the length of the tongue slot on the side of the needle is dimensioned such that the tongue located in the reserve can abut on the shaft. For this purpose, an additional recess for receiving the spoon formed on the tongue can be provided at the end of the tongue slot. Such recesses and shapes no longer interfere with the spring attachment, i. for example, the spring storage bags. These are arranged according to the invention to the needle rear side.

Weitere Einzelheiten vorteilhafter Ausführungsformen der Erfindung sind Gegenstand der Zeichnung, der Beschreibung oder von Ansprüchen. In der Zeichnung sind Ausführungsbeispiele der Erfindung veranschaulicht. Es zeigen:

Figur 1
eine erfindungsgemäße Zungennadel in schematisierter Seitenansicht,
Figur 2
die Zungennadel nach Figur 1 in vergrößerter, teilweise längs geschnittener und ausschnittsweiser Ansicht,
Figur 3
die Zungennadel nach Figur 2 mit Zunge in Schließlage,
Figur 4
die Zungennadel nach Figur 2 mit Zunge in Rückenlage,
Figur 5
die Zungennadel nach Figur 1 und 2, quer geschnitten im Bereich ihrer Lagereinrichtung,
Figur 6
die Zungennadel nach Figur 2, quer geschnitten im Bereich ihres Zungenschlitzes und
Figur 7
eine abgewandelte Ausführungsform der erfindungsgemäßen Zungennadel in perspektivischer ausschnittsweiser Ansicht.
Further details of advantageous embodiments of the invention are the subject of the drawing, the description or claims. In the drawings, embodiments of the invention are illustrated. Show it:
FIG. 1
a latch needle according to the invention in a schematic side view,
FIG. 2
the latch needle of Figure 1 in an enlarged, partially longitudinally sectioned and fragmentary view,
FIG. 3
the latch needle of Figure 2 with tongue in the closed position,
FIG. 4
the latch needle according to FIG. 2 with tongue in supine position,
FIG. 5
the latch needle according to FIGS. 1 and 2, cut transversely in the region of its bearing device,
FIG. 6
the latch needle of Figure 2, cut transversely in the region of her tongue slot and
FIG. 7
a modified embodiment of the latch needle according to the invention in a perspective fragmentary view.

In Figur 1 ist eine Zungennadel 1 veranschaulicht, die in erster Linie als Maschinenstricknadel oder in ähnlicher Form auch als Wirknadel oder dergleichen Anwendung finden kann. Die Zungennadel 1 weist einen von zwei Flachseiten begrenzten Grundkörper 2 auf, von dem sich ein Schaft 3 weg erstreckt. Der Schaft 3 trägt an seinem freien Ende einen Haken 4, dessen Spitze 5 zu dem Grundkörper 2 weist. Die in Figur 2 untere von dem Haken 4 der Zungennadel 1 sowie von ihrem Fuß 6 abliegende Schmalseite des Grundkörpers 2 und des Schafts 3 bildet den Nadelrücken 7. Die in Figur 1 obere Schmalseite des Schafts 3 bildet zumindest in unmittelbarer Nachbarschaft des Hakens 4 eine Nadelbrust 8. Im Bereich der Nadelbrust 8 ist der Schaft 3 mit einem Zungenschlitz 9 versehen, der durch den in Figur 2 veranschaulichten Längsschnitt sichtbar wird. Der Zungenschlitz 9 dient der Aufnahme eines Endes einer Zunge 11, wobei sie durch eine Lagereinrichtung 12 schwenkbar gelagert ist. Die Lagereinrichtung wird durch ein Lagermittel 13 z.B. einen Lagerzapfen gebildet, der ein endseitig in der Zunge 11 ausgebildetes Zungenloch 14 durchgreift. Die Zunge 11 ist hin und her schwenkbar, so dass sie mit ihrem Löffel 15 auf der Hakenspitze 5 aufliegen oder in Rücklage geschwenkt werden kann. An dem Grundkörper 2 können weitere Elemente ausgebildet oder befestigt sein, wie beispielsweise eine seitlich angebrachte Umhängefeder 16, die mit der Flachseite des Grundkörpers 2 verbunden ist und einen federnden Finger aufweist, dessen Spitze unter Vorspannung an dem Schaft 3 anliegt.FIG. 1 illustrates a latch needle 1 which can be used primarily as a machine knitting needle or in a similar form as a knitting needle or the like. The latch needle 1 has a basic body 2 delimited by two flat sides, from which a shaft 3 extends away. The shaft 3 carries at its free end a hook 4, whose tip 5 faces the base body 2. The lower in Figure 2 from the hook 4 of the latch needle 1 and from its foot 6 narrow side of the base body 2 and the shaft 3 forms the needle back 7. The upper side in Figure 1 narrow side of the shaft 3 forms at least in the immediate vicinity of the hook 4, a needle breast 8. In the area of the needle breast 8, the shaft 3 is provided with a tongue slot 9, which is visible through the longitudinal section illustrated in FIG. The tongue slot 9 serves to receive one end of a tongue 11, wherein it is pivotally supported by a bearing device 12. The storage facility is provided by a storage means 13 e.g. formed a bearing pin, which passes through a tongue 11 formed in the end tongue hole 14. The tongue 11 is pivotable back and forth so that they rest with their spoon 15 on the hook tip 5 or can be pivoted in reserve. On the base body 2 further elements may be formed or fixed, such as a laterally mounted cap spring 16 which is connected to the flat side of the base body 2 and having a resilient finger, the tip of which bears against the shaft 3 under bias.

Wie Figur 5 veranschaulicht, kann das Lagermittel 13 der Lagereinrichtung 12 in zwei Halbzapfen 13a, 13b unterteilt sein, die aus den den Zungenschlitz 9 begrenzenden Seitenwangen des Schafts 3 nach innen gedrückt sind, um in das Zungenloch 14 greifende Vorsprünge auszubilden.As illustrated in FIG. 5, the bearing means 13 of the bearing device 12 can be subdivided into two half-pins 13 a, 13 b, which delimit the tongue slot 9 Side cheeks of the shaft 3 are pressed inwardly to form in the tongue hole 14 cross-projections.

Eine wesentliche Besonderheit der Zungennadel 1 liegt in der Ausbildung des Zungenschlitzes 9, in dem die Zunge 11 schwenkbar gelagert ist. Figur 2 veranschaulicht gestrichelt mehrere Schwenkstellungen der Zunge 11. Der Zungenschlitz 9 erweitert sich, wie insbesondere Figur 2 wie auch die Figuren 3 und 4 zeigen, zu dem Nadelrücken 7 hin. Er wird an seinem axial vorderen sowie axial hinteren Ende jeweils durch schmale Flächen 17, 18 begrenzt, die von einander weg divergieren, d.h. miteinander einen Winkel einschließen, der sich in Figur 2 nach unten öffnet. Sind die Flächen 17, 18 gekrümmt liegt der Mittelpunkt ihres Krümmungsradiuses vorzugsweise unterhalb des Nadelrückens 7.A significant feature of the latch needle 1 lies in the formation of the tongue slot 9, in which the tongue 11 is pivotally mounted. FIG. 2 illustrates in dashed lines a plurality of pivot positions of the tongue 11. The tongue slot 9 expands, in particular FIG. 2 as well as FIGS. 3 and 4, towards the needle back 7. It is bounded at its axially front and axially rear ends by narrow surfaces 17, 18 which diverge away from each other, i. together form an angle which opens downwards in FIG. If the surfaces 17, 18 are curved, the center of their radius of curvature is preferably below the needle back 7.

An den Flächen 17, 18 sind jeweils Ausnehmungen ausgebildet; die Federlagertaschen 19, 21 bilden. Diese dienen der Aufnahme einer Zungenfeder 22. Die Zungenfeder 22 weist, wie Figur 5 oder 6 erkennen lässt, beispielsweise einen nahezu runden Querschnitt oder alternativ auch einen rechteckigen Querschnitt auf. Sie ist aus Federmaterial, beispielsweise Federstahl, ausgebildet und im Wesentlichen gestreckt. Sie liegt mit einem mittleren, vorzugsweise ebenen, Bereich an dem in dem Zungenschlitz 9 befindlichen Ende der Zunge 11 an und zwar vorzugsweise unter Vorspannung. An der Zunge 11 können hier Anlageflächen 23, 24 ausgebildet sein, die eine stabile Rückenlage der Zunge 11 (Figur 4) oder auch eine der Schließlage (Figur 3) benachbarte Lage stabilisieren.On the surfaces 17, 18 recesses are formed in each case; the spring bearing pockets 19, 21 form. These serve to receive a tongue spring 22. The tongue spring 22 has, as Figure 5 or 6 reveals, for example, a nearly round cross section or alternatively also a rectangular cross section. It is made of spring material, such as spring steel, formed and substantially stretched. It is located with a central, preferably flat, region at the located in the tongue slot 9 end of the tongue 11 and that preferably under bias. On the tongue 11 can here contact surfaces 23, 24 are formed, which stabilize a stable supine position of the tongue 11 (Figure 4) or a closed position (Figure 3) adjacent position.

Die Federlagertaschen 19, 21 sind zu dem Nadelrücken 9 hin im Wesentlichen offen. Die Zungenfeder 22 liegt mit ihren Enden 25, 26 in diesen Federlagertaschen 19, 21, wobei zueinander im Wesentlichen parallele, quer zu der Nadellängsrichtung gerichtete Endflächen 27, 28 der Federlagertaschen 19, 21 voneinander einen Abstand aufweisen, der etwas größer ist als die Länge der Zungenfeder 22. Um ein Herausfallen der Zungenfeder 22 aus den Federlagertaschen 19, 21 zu vermeiden und um die Federkraft der Zungenfeder 22 abzustützen, sind die Federlagertaschen 19, 21 zu dem Nadelrücken 7 hin beispielsweise durch Prägestellen 29, 31 geschlossen. Die Prägestellen können auch durch z.B. per Laser erzeugte Anschmelzungen oder ähnliches ersetzt werden. Wie Figur 7 veranschaulicht können anstelle von Prägestellen 29 auch seitliche Quetschzonen 29a ausgebildet werden, in denen der Schaft 3 unmittelbar an den Nadelrücken seitlich zusammengedrückt ist, um die Federlagertasche 19 zu schließen. Gleiches gilt für die Federlagertasche 21. Es können, wie dargestellt, auch verschiedene Maßnahmen kombiniert werden, um die Federlagertaschen zu schließen. Auch können an den Quetschzonen 29a zusätzlich Prägestellen angebracht werden.The spring bearing pockets 19, 21 are substantially open towards the needle back 9. The tongue spring 22 is located with its ends 25, 26 in these spring bearing pockets 19, 21, wherein each substantially parallel, transversely to the needle longitudinal direction directed end faces 27, 28 of the spring bearing pockets 19, 21 from each other have a distance which is slightly larger than the length of Tongue spring 22. To prevent the tongue spring 22 from falling out of the spring bearing pockets 19, 21 and to support the spring force of the tongue spring 22, the spring bearing pockets 19, 21 are closed towards the needle back 7, for example by embossing points 29, 31. The embossments can also be made by e.g. be replaced by laser-generated amalgamations or the like. As illustrated in FIG. 7, instead of embossing points 29, lateral crimping zones 29a can also be formed, in which the shank 3 is compressed laterally directly at the needle back in order to close the spring-loaded pocket 19. The same applies to the spring bearing pocket 21. It can, as shown, and various measures are combined to close the spring bearing pockets. In addition, embossing points can be additionally attached to the pinching zones 29a.

Im vorliegenden Ausführungsbeispiel gemäß Figur 1 bis 4 weist die Federlagertasche 19 zwei Prägestellen 29 auf, die an den beiden einander parallel gegenüber liegenden Seitenflanken der Federlagertasche 19 ausgebildet sind und aufeinander zu weisen, um die lichte Weite zwischen den beiden Seitenflanken an dem Nadelrücken 7 zu verringern. Entsprechendes gilt für die Federlagertasche 21 und deren Prägestellen 31. Mit der Größe und der Tiefe der jeweiligen Prägestellen 29, 31, gemessen ausgehend vom Nadelrücken 7, lässt sich die Vorspannung der Zungenfeder 22 in ihren Federlagertaschen 19, 21 regulieren.In the present embodiment according to Figure 1 to 4, the spring bearing pocket 19 has two embossments 29 which are formed on the two mutually parallel side edges of the spring bearing pocket 19 and facing each other to reduce the clear width between the two side edges on the needle back 7 , The same applies to the spring bearing pocket 21 and its embossing points 31. With the size and the depth of the respective embossing points 29, 31, measured from the needle back 7, can the bias of the tongue spring 22 in their spring bearing pockets 19, 21 regulate.

An der der Nadelbrust 8 zugewandten Seite des Zungenschlitzes 9 kann sich der Zungenschlitz 9 bezüglich der Nadellängsrichtung ebenfalls erweitern. Dies gilt insbesondere für die von dem Haken 4 abliegende Seite. Hier kann sich an den Zungenschlitz ein beispielsweise verbreiterter Schlitzbereich 32 anschließen, der, wie Figur 4 veranschaulicht, die Überführung der Zunge 11 in eine Anlageposition gestattet, in der die Zunge 11 den Schaft 3 berührt. Diese Position ist in Figur 4 für die Zunge 11 gestrichelt dargestellt. Die stabile Rücklagenposition der Zunge 11, in der die Zunge 11 mit ihrer Anlagefläche 23 an der Zungenfeder 22 anliegt, ist in Figur 4 mit durchgehender Linie eingezeichnet.At the side of the tongue slot 9 facing the needle breast 8, the tongue slot 9 can likewise expand with respect to the needle longitudinal direction. This applies in particular to the side away from the hook 4 page. Here, an example widened slot portion 32 may connect to the tongue slot, which, as Figure 4 illustrates, allows the transfer of the tongue 11 in an investment position in which the tongue 11 contacts the shaft 3. This position is shown by dashed lines in Figure 4 for the tongue 11. The stable return position of the tongue 11, in which the tongue 11 rests with its contact surface 23 on the tongue spring 22 is shown in Figure 4 with a continuous line.

Der Zungenschlitz 9 ist hinsichtlich seiner axialen Länge und der Position seines hakenseitigen Endes nadelbrustseitig vorzugsweise so lang oder kurz bemessen, dass die Zunge 11 den Zungenschlitz 9 in Schließlage nahezu verschließt. Figur 2 veranschaulicht in einer ersten gestrichelten Darstellung I der Zunge 11 die stabile, dem Haken 4 benachbarte Ruhelage der Zunge 11. Es liegt die Anlagefläche 24 an der Zungenfeder 22 an. Ausgehend von dieser Position kann die Zunge 11 an den Haken 4 bzw. die Hakenspitze 5 heran gedrückt werden, bis der Löffel 15 der Zunge 11 mit seiner Innenseite an dem Haken 4 anliegt. Diese Position ist in Figur 2 als Position II gekennzeichnet, wobei die Zunge 11 wiederum gestrichelt veranschaulicht ist. In dieser Position besteht zwischen dem hakenseitigen Ende 33 des Zungenschlitzes 9 und der entsprechenden Stelle 34 der Zunge 11 ein Abstand, durch den verhindert wird, dass die Zunge 11 das Schlitzende 33 berührt. Jedoch ist der Zungenschlitz 9 weitgehend geschlossen, so dass Schmutz in Form von Paraffine, Avivage, Staub oder Abrieb der von einem in dem Haken 4 gefangenen Faden ausgeht, nicht in den Zungenschlitz 9 gelangen kann.The tongue slot 9 is preferably dimensioned so long or short in terms of its axial length and the position of its hook-side end needle side, that the tongue 11 almost closes the tongue slot 9 in the closed position. Figure 2 illustrates in a first dashed line I of the tongue 11, the stable, the hook 4 adjacent rest position of the tongue 11. It is the contact surface 24 on the tongue spring 22 at. Starting from this position, the tongue 11 can be pressed against the hook 4 or the hook tip 5 until the spoon 15 of the tongue 11 rests with its inside against the hook 4. This position is indicated in Figure 2 as position II, wherein the tongue 11 is again shown in dashed lines. In this position, there is between the hook-side end 33 of the tongue slot 9 and the corresponding point 34 of the tongue 11, a distance by which the tongue 11 is prevented from contacting the slot end 33. However, the tongue slot 9 is largely closed, so that dirt in the form of paraffin, finishing, dust or abrasion emanating from a trapped in the hook 4 thread, can not get into the tongue slot 9.

Sollte die Zunge 11 durch mit der Zeit zunehmendes seitliches Spiel neben die Spitze 5 des Hakens treffen und somit an dem Haken 4 bzw. seiner Spitze 5 keine Anlage finden, verhindert der geringe Abstand zwischen dem Schlitzende 33 und der Anlagestelle 34 der Zunge 11, dass die Zunge 11 unter die Hakenspitze 5 gerät. Eine entsprechende Position III der Zunge 11 ist in Figur 2 strichpunktiert gekennzeichnet und in Figur 3 gesondert dargestellt. Ersichtlich wird somit ein Weiterstricken mit Nadeln ermöglicht, die nicht mehr unbedingt sicher die Spitze des Hakens 4 treffen. Zumindest werden grobe Strickfehler vermieden.Should the tongue 11 hit by the time increasing lateral play next to the tip 5 of the hook and thus find no hook on the hook 4 and its tip 5, prevents the small distance between the slot end 33 and the contact point 34 of the tongue 11 that the tongue 11 under the hook tip 5 device. A corresponding position III of the tongue 11 is indicated in phantom in FIG. 2 and shown separately in FIG. Obviously, a further knitting with needles is made possible, which no longer necessarily hit the tip of the hook 4 with certainty. At least rough knitting errors are avoided.

Ein neues Konzept einer Zungennadel 1 geht von einer rückseitigen Befestigung der Zungenfeder 22 in dem Zungenschlitz 9 der Zungennadel 1 aus. Die Zungennadel 1 weist dazu von dem Nadelrücken 7 her zugängliche Federlagertaschen 19, 21 oder andere geeignete zur Aufnahme der Enden 25, 26 der Zungenfeder 22 geeignete Strukturen auf. Die Federlagertaschen19, 21 sind zu dem Nadelrücken 7 wenigstens so weit geschlossen, dass die Enden 25, 26 der Zungenfeder 22 formschlüssig oder zumindest verliersicher in den Federlagertaschen 19, 21 gehalten sind. Diese Zungennadel zeigt eine verminderte Toleranzempfindlichkeit bei der Herstellung. Das vorgestellte Nadelkonzept gestattet weitere Verbesserungen, die der Betriebssicherheit und Lebensdauer der Zungennadel entgegen kommen.A new concept of a latch needle 1 is based on a rear attachment of the tongue spring 22 in the tongue slot 9 of the latch needle 1. The latch needle 1 has for this purpose from the needle back 7 forth accessible spring bearing pockets 19, 21 or other suitable for receiving the ends 25, 26 of the tongue spring 22 suitable structures. The spring bearing pockets 19, 21 are closed to the needle back 7 at least so far that the ends 25, 26 of the tongue spring 22 are held positively or at least captively in the spring bearing pockets 19, 21. This latch needle shows a reduced tolerance sensitivity in the production. The presented needle concept allows further improvements, which meet the reliability and longevity of the latch needle.

Bezugszeichenliste:LIST OF REFERENCE NUMBERS

11
Zungennadellatch needle
22
Grundkörperbody
33
Schaftshaft
44
Hakenhook
55
Spitzetop
66
Fußfoot
77
Nadelrückenneedle back
88th
Nadelbrustneedle breast
99
Zungenschlitzlatch slot
1111
Zungetongue
1212
LagereinrichtungStorage facility
1313
Lagermittelbearing means
1414
Zungenlochlatch hole
1515
Löffelspoon
1616
Umhängefedertransfer spring
17, 1817, 18
Flächensurfaces
19, 2119, 21
FederlagertaschenSpring bearing pockets
2222
Zungenfederlatch spring
23, 2423, 24
Anlageflächencontact surfaces
25, 2625, 26
Endenend up
27, 2827, 28
Endflächenend surfaces
29, 3129, 31
Prägestellenmints
29a29a
Quetschzonensquish
3232
Schlitzbereichslot area
3333
SchlitzendeSlashing
3434
Anlagefläche, StelleContact surface, position

Claims (8)

Zungennadel (1), insbesondere Maschinenstricknadel
mit einem Schaft (3), an dem ein Haken (4) und ein Zungenschlitz (9) ausgebildet sind und der eine Nadelbrust (8) und einen Nadelrücken (7) aufweist, zwischen denen sich der Zungenschlitz (9) erstreckt, wobei sich der Zungenschlitz (9) zu dem Nadelrücken (7) hin erweitert,
mit einer Zunge (11), die in dem Zungenschlitz (9) schwenkbar gelagert ist, und
mit einer Zungenfeder (22), die in dem sich zu dem Nadelrücken (7) hin erweiternden Bereich des Zungenschlitzes (9) angeordnet ist.Tongue needle (1), in particular machine knitting needle
with a shaft (3) on which a hook (4) and a tongue slot (9) are formed and which has a needle breast (8) and a needle back (7), between which the tongue slot (9) extends, wherein the Tongue slot (9) widens towards the needle back (7),
with a tongue (11) which is pivotally mounted in the tongue slot (9), and
with a tongue spring (22) which is arranged in the region of the tongue slot (9) which widens toward the needle back (7). Zungennadel nach Anspruch 1, dadurch gekennzeichnet, dass in dem Zungenschlitz (9) sich zu dem Nadelrücken (7) hin öffnende Federlagertaschen (19, 21) angeordnet sind.Latch needle according to claim 1, characterized in that in the tongue slot (9) to the needle back (7) towards opening spring bearing pockets (19, 21) are arranged. Zungennadel nach Anspruch 1, dadurch gekennzeichnet, dass die Zungenfeder (22) in dem Zungenschlitz (9) formschlüssig gehalten ist.Latch needle according to claim 1, characterized in that the tongue spring (22) is held positively in the tongue slot (9). Zungennadel nach Anspruch 1, dadurch gekennzeichnet, dass die Zungenfeder (22) in dem Zungenschlitz (9) durch wenigstens eine Prägestelle (29, 31) gehalten ist.Latch needle according to claim 1, characterized in that the tongue spring (22) in the tongue slot (9) by at least one embossing point (29, 31) is held. Zungennadel nach Anspruch 1, dadurch gekennzeichnet, dass sich der Zungenschlitz (9) zu der Nadelbrust (8) hin erweitert.Latch needle according to claim 1, characterized in that the tongue slot (9) widens towards the needle breast (8). Zungennadel nach Anspruch 1, dadurch gekennzeichnet, dass die Zungenfeder (22) in dem Zungenschlitz (9) zwischen einer in Schaftlängsrichtung zu messenden Engstelle und dem Nadelrücken (7) angeordnet ist.Latch needle according to claim 1, characterized in that the tongue spring (22) is arranged in the tongue slot (9) between a constriction to be measured in the longitudinal direction of the shaft and the needle back (7). Zungennadel nach Anspruch 1, dadurch gekennzeichnet, dass der Zungenschlitz (9) von Seitenwangen begrenzt ist und dass zur schwenkbaren Lagerung der Zunge (11) eine Zungenlagerung (12) mit wenigstens einem Lagermittel (13), das durch einen durch plastische Verformung einer Seitenwange erzeugten Zapfen gebildet ist, aufweist.Latch needle according to claim 1, characterized in that the tongue slot (9) is bounded by side cheeks and that for the pivotal mounting of the tongue (11) a tongue bearing (12) with at least one bearing means (13) generated by a by plastic deformation of a side cheek Cones is formed, has. Zungennadel nach Anspruch 1, dadurch gekennzeichnet, dass der Zungenschlitz (9) an seiner an die Nadelbrust (7) grenzenden Seite zu dem Haken (4) hin eine Anlagefläche (33) für die Zunge (11) aufweist.Latch needle according to claim 1, characterized in that the tongue slot (9) on its side adjacent to the needle breast (7) side to the hook (4) towards a contact surface (33) for the tongue (11).
EP05019520A 2004-10-08 2005-09-08 Latch needle Expired - Fee Related EP1645670B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102004049061A DE102004049061B4 (en) 2004-10-08 2004-10-08 latch needle

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EP1645670A1 true EP1645670A1 (en) 2006-04-12
EP1645670B1 EP1645670B1 (en) 2008-02-13

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US (1) US7191620B2 (en)
EP (1) EP1645670B1 (en)
JP (1) JP4117314B2 (en)
KR (1) KR100740023B1 (en)
CN (1) CN100529221C (en)
DE (2) DE102004049061B4 (en)

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EP3604651A1 (en) * 2018-08-03 2020-02-05 Groz-Beckert KG Latch needle

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EP1921189B1 (en) * 2006-11-09 2011-05-11 Groz-Beckert KG Knitting machine needle
EP2088228B1 (en) * 2008-02-05 2011-10-19 Groz-Beckert KG Latch needle
CN102560875A (en) * 2011-12-20 2012-07-11 常州思成凯业精密制针有限公司 Latch needle
CN102535000B (en) * 2011-12-20 2013-12-11 常州思成凯业精密制针有限公司 Dustproof latch needle

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Also Published As

Publication number Publication date
KR20060052091A (en) 2006-05-19
KR100740023B1 (en) 2007-07-18
JP4117314B2 (en) 2008-07-16
DE102004049061B4 (en) 2006-08-24
US20060075788A1 (en) 2006-04-13
EP1645670B1 (en) 2008-02-13
JP2006104653A (en) 2006-04-20
DE502005002812D1 (en) 2008-03-27
DE102004049061A1 (en) 2006-04-20
CN1757805A (en) 2006-04-12
CN100529221C (en) 2009-08-19
US7191620B2 (en) 2007-03-20

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