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EP0232466A1 - Latch needle for textile machines - Google Patents

Latch needle for textile machines Download PDF

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Publication number
EP0232466A1
EP0232466A1 EP86114374A EP86114374A EP0232466A1 EP 0232466 A1 EP0232466 A1 EP 0232466A1 EP 86114374 A EP86114374 A EP 86114374A EP 86114374 A EP86114374 A EP 86114374A EP 0232466 A1 EP0232466 A1 EP 0232466A1
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EP
European Patent Office
Prior art keywords
needle shaft
needle
tongue
axle
end faces
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
EP86114374A
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German (de)
French (fr)
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EP0232466B1 (en
Inventor
Sigmar Majer
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
Theodor Groz and Soehne and Ernst Beckert Nadelfabrik KG
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Application filed by Theodor Groz and Soehne and Ernst Beckert Nadelfabrik KG filed Critical Theodor Groz and Soehne and Ernst Beckert Nadelfabrik KG
Publication of EP0232466A1 publication Critical patent/EP0232466A1/en
Application granted granted Critical
Publication of EP0232466B1 publication Critical patent/EP0232466B1/en
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    • 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 for textile machines, with a pivotable in a longitudinal slot of the needle shaft, which is pivotally mounted by means of a continuous bearing bore on a one-piece, cylindrical axle bolt, which is inserted into corresponding coaxial bores of the needle shaft cheeks laterally delimiting the longitudinal slot and fixed securely in this is.
  • Tongue needles of this type are used in various textile machines, in particular in knitting and knitting machines, but also, for example, in special sewing machines.
  • axle pin is namely rigidly connected at the end to the needle shaft cheeks, for example screwed or welded (DE-PS 1296 734), which results in a rigid and completely inelastic tongue bearing arrangement transverse to the axis of symmetry of the needle, which was identified as the cause of premature jaw fractures.
  • tongue needles are used almost consistently in practice, in which the needle tongue with its bearing bore is pivotally mounted on two bearing pins pressed out of the material of the needle shaft cheeks (US Pat. No. 3,934,109; GB Pat. No. 836,297). Because of the unpredictable flow behavior of the material of the needle shaft cheeks pressed into the bearing bore of the tongue, the bearing pins produced by an embossing process and connected to the needle shaft cheeks are more or less irregular on their outer surface, with the result that the area bearing portion of the needle tongue on the bearing pins is also one brand new needle is relatively small.
  • the object of the invention is therefore to remedy this situation and to create a latch needle which on the one hand has the advantages with regard to accuracy and wear resistance of the tongue bearing of a latch needle provided with a continuous axle bolt and on the other hand also maintains its full usability over long periods of operation without the risk of the occurrence of broken jaws.
  • the latch needle mentioned at the outset is characterized according to the invention in that the length of the axle pin is less than the needle shaft thickness at the tongue bearing point and the axle pin with its outwardly facing end faces lies in the depth of the holes in the needle shaft cheeks and that the material of the needle shaft cheeks is made of the material in the bore protruding fixing elements for the axle bolt are formed, which are close to the free end faces of the axle bolt.
  • the tongue with its bearing bore is perfectly positioned with the largest possible area traa fraction and thus correspondingly small specific pivot bearing surface loads.
  • the fixing elements deformed into the bore of the needle shaft cheeks ensure that the axle bolt does not slide outwards over time and can endanger the tongue in its storage. Since the needle shaft cheeks are not rigidly connected to the axle bolt, they can be elastically cussofted laterally transversely to the plane of symmetry, so that a corresponding one crosses the needle Effective elasticity is guaranteed and fractures of the needle shaft cheeks are reliably prevented.
  • annular material bead is formed from the material of the needle shaft cheeks as the fixing element.
  • the fixing elements are axially spaced from the adjacent end faces of the axle bolt, so that an inward elastic movement of the needle shaft cheeks is possible without hindrance if necessary.
  • axle bolt with its end faces pointing outwards, lies essentially in the half of the bore in the needle shaft cheeks adjacent to the longitudinal slot.
  • the latch needle has a needle shaft 1, on which a hook 2 is integrally formed at one end and which can carry feet, not shown, which interact in a known manner with lock parts of knitting machines etc.
  • a tongue 5 is pivotally mounted, which at one end carries a tongue spoon 7 covering the hook tip 6 in the closed position shown and whose shaft 8 fitted into the longitudinal slot 3 with parallel flanks has a bearing bore 9.
  • a transverse bore 12 is formed in each case which is coaxial with the pivot axis of the tongue 5 indicated at 11, into which a smooth-walled cylindrical axle bolt 13 crossing the longitudinal slot 3 is inserted in the sliding seat.
  • the tongue with its bearing bore 9 is supported with a small radial bearing clearance, which corresponds, for example, to a diameter difference of + 0.001 mm and less.
  • the axle pin 13 lies with its outwardly facing parallel end faces 14 in the half of the respective bore 12 adjacent to the longitudinal slot 3, it being in the illustrated embodiment roughly to the middle of the hole depth. It is axially fixed in the bores 12 by fixing elements projecting into these bores, which are located in the vicinity of the free end faces 14 of the axle bolt 13 and are 10-shaped from the material of the needle shaft cheeks. In the exemplary embodiment shown, these fixing elements are each in the form of an annular material bead 15, which lies at a small axial distance 16 from the adjacent end faces 14 of the axle bolt 13.
  • the needle shaft cheeks 10 can deflect elastically laterally if they are subjected to a corresponding alternating load during operation. This eliminates the risk of broken jaws.
  • finger-like or tooth-like fixing elements could also be provided, which are formed in the material of the needle shaft side cheeks 10 by an embossing process and project into the bores 12 in a corresponding manner.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
  • Sewing Machines And Sewing (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

Eine Zungennadel für Textilmaschinen mit einer in einem Längsschlitz (3) des Nadelschaftes (1) verschwenkbaren Zunge (5), die mittels einer durchgehenden Lagerbohrung (9) auf einem einstückigen zylindrischen Achsbolzen (13) schwenkbar gelagert ist, ist derart ausgebildet, daß die Länge des Achsbolzens kleiner als die Nadelschaftdicke an der Zungenlagerstelle ist und der Achsbolzen mit seinen nach außen weisenden freien Stirnseiten (14) in der Tiefe der Bohrung und der Nadelschaftwangen (10) liegt. Aus dem Material der Nadelschaftwangen sind in deren Bohrungen (12) ragende Fixierelemente (15) für den Achsbolzen ausgeformt, die in der Nähe der freien Stirnflächen des Achsbolzens liegen.

Figure imgaf001
A tongue needle for textile machines with a tongue (5) which can be pivoted in a longitudinal slot (3) of the needle shaft (1) and which is pivotably mounted on a one-piece cylindrical axle bolt (13) by means of a continuous bearing bore (9) is designed such that the length of the axle pin is smaller than the needle shaft thickness at the tongue bearing point and the axle pin with its free end faces (14) pointing outwards lies in the depth of the bore and the needle shaft cheeks (10). From the material of the needle shaft cheeks projecting fixing elements (15) for the axle bolts are formed in their bores (12), which are located in the vicinity of the free end faces of the axle bolt.
Figure imgaf001

Description

Die Erfindung betrifft eine Zungennadel für Textilmaschinen, mit einer in einem Längsschlitz des Nadelschaftes verschwenkbaren Zunge, die mittels einer durchgehenden Lagerbohrung auf einem einstückigen, zylindrischen Achsbolzen schwenkbar gelagert ist, der in entsprechende koaxiale Bohrungen der den Längsschlitz seitlich begrenzenden Nadelschaftwangen eingefügt und in diesen verschiebesicher fixiert ist.The invention relates to a latch needle for textile machines, with a pivotable in a longitudinal slot of the needle shaft, which is pivotally mounted by means of a continuous bearing bore on a one-piece, cylindrical axle bolt, which is inserted into corresponding coaxial bores of the needle shaft cheeks laterally delimiting the longitudinal slot and fixed securely in this is.

Zungennadeln dieser Art werden in verschiedenen Textilmaschine, insbesondere in Strick- und Wirkmaschinen, aber auch bspw. in Spezial-Nähmaschinen, verwendet.Tongue needles of this type are used in various textile machines, in particular in knitting and knitting machines, but also, for example, in special sewing machines.

An die Lagerung der Zunge werden im allgemeinen hohe Anforderungen in Bezug auf mechanische Belastbarkeit und Genauigkeit der Zungenführung gestellt, insbesondere dann, wenn die Zungennadeln in schnelllaufenden Strickmaschinen arbeiten oder robuste Garne zu verstricken haben. Die während des Strickvorganges durch die Zunge ausgelösten Keilwirkungen auf die den Längsschlitz begrenzenden Nadelschaftwangen versuchen diese auseinanderzuspreizen, während gleichzeitig über die Zunge starke Hebelkräfte auf den Achsbolzen wirksam werden.High requirements are generally placed on the storage of the tongue with regard to mechanical resilience and accuracy of the tongue guidance, in particular when the latch needles work in high-speed knitting machines or when knitting robust yarns. The wedge effects caused by the tongue during the knitting process on the needle shaft cheeks delimiting the longitudinal slot try to spread them apart, while the same strong lever forces on the axle bolts are effective at an early stage.

Die Lagerung der Zunge mittels ihrer Lagerbohrung auf der glatten zylindrischen Mantelfläche eines durchgehenden Achsbolzens ergibt eine sehr genaue und verschleißfeste Zungenführung. Trotzdem sind Zungennadeln mit solchen durchgehenden Achsbolzen heute nahezu bedeutungslos, weil sie bei hoher, insbesondere dynamischer Belastung unter Backenbrüchen leiden. Der Achsbolzen ist nämlich mit den Nadelschaftwangen endseitig starr verbunden, bspw. verschraubt oder verschweißt (DE-PS 1296 734), wodurch sich eine starre und quer zur Nadelsymmetrieachse völlig unelastische Zungenlageranordnung ergibt, die als Ursache für frühzeitige Backenbrüche erkannt wurde. Es werden deshalb bis heute in der Praxis nahezu durchweg Zungennadeln eingesetzt, bei denen die Nadelzunge mit ihrer Lagerbohrung auf zwei aus dem Material der Nadelschaftwangen herausgedrückten Lagerzapfen schwenkbar gelagert ist (US-PS 3,934,109; GB-PS 836 297). Wegen des unvorhersehbaren Fließverhaltens des in die Lagerbohrung der Zunge hineingedrückten Materials der Nadelschaftwangen sind diese durch einen Prägevorgang erzeugten und mit den Nadelschaftwangen verbundenen Lagerzapfen aber an ihrer Mantelfläche mehr oder minder unregelmäßig, mit dem Ergebnis, daß der Flächentraganteil der Nadelzunge auf den Lagerzapfen auch bei einer fabrikneuen Nadel verhältnismäßig klein ist.The storage of the tongue by means of its bearing bore on the smooth cylindrical surface of a continuous axle bolt results in a very precise and wear-resistant tongue guide. Nevertheless, latch needles with such continuous axle bolts are almost meaningless today because they suffer from broken jaws when subjected to high, particularly dynamic loads. The axle pin is namely rigidly connected at the end to the needle shaft cheeks, for example screwed or welded (DE-PS 1296 734), which results in a rigid and completely inelastic tongue bearing arrangement transverse to the axis of symmetry of the needle, which was identified as the cause of premature jaw fractures. To this day, therefore, tongue needles are used almost consistently in practice, in which the needle tongue with its bearing bore is pivotally mounted on two bearing pins pressed out of the material of the needle shaft cheeks (US Pat. No. 3,934,109; GB Pat. No. 836,297). Because of the unpredictable flow behavior of the material of the needle shaft cheeks pressed into the bearing bore of the tongue, the bearing pins produced by an embossing process and connected to the needle shaft cheeks are more or less irregular on their outer surface, with the result that the area bearing portion of the needle tongue on the bearing pins is also one brand new needle is relatively small.

Aufgabe der Erfindung ist es deshalb, hier abzuhelfen und eine Zungennadel zu schaffen, die einerseits die Vorzüge hinsichtlich Genauigkeit und Verschleißfestigkeit der Zungenlagerung einer mit einem durchgehenden Achsbolzen versehenen Zungennadel aufweist und andererseits auch über lange Betriebszeiträume ihre volle Gebrauchstauglichkeit ohne die Gefahr des Auftretens von Backenbrüchen behält.The object of the invention is therefore to remedy this situation and to create a latch needle which on the one hand has the advantages with regard to accuracy and wear resistance of the tongue bearing of a latch needle provided with a continuous axle bolt and on the other hand also maintains its full usability over long periods of operation without the risk of the occurrence of broken jaws.

Zur Lösung dieser Aufgabe ist die eingangs genannte Zungennadel erfindungsgemäß dadurch gekennzeichnet, daß die Länge des Achsbolzens kleiner als die Nadelschaftdicke an der Zungenlagerstelle ist und der Achsbolzen mit seinen nach außen weisenden Stirnseiten in der Tiefe der Bohrungen der Nadelschaftwangen liegt und daß aus dem Material der Nadelschaftwangen in deren Bohrung ragende Fixierelemente für den Achsbolzen ausgeformt sind, die in der Nähe der freien Stirnflächen des Achsbolzens liegen.To achieve this object, the latch needle mentioned at the outset is characterized according to the invention in that the length of the axle pin is less than the needle shaft thickness at the tongue bearing point and the axle pin with its outwardly facing end faces lies in the depth of the holes in the needle shaft cheeks and that the material of the needle shaft cheeks is made of the material in the bore protruding fixing elements for the axle bolt are formed, which are close to the free end faces of the axle bolt.

Auf der glatten zylindrischen Mantelfläche des einstückig durchgehenden Achsbolzens findet die Zunge mit ihrer Lagerbohrung eine einwandfreie Lagerung mit größtmöglichem Flächentraaanteil und damit entsprechend kleiner spezifischer Drehlager-Flächenbelastung. Die in die Bohrung der Nadelschaftwangen hineinverformten Fixierelemente sorgen dafür, daß sich der Achsbolzen im Laufe der Zeit nicht nach auswärts schieben und die Zunge in ihrer Lagerung gefährden kann. Da die Nadelschaftwangen mit dem Achsbolzen nicht starr verbunden sind, können sie seitlich quer zu der Mdelsymmetrieebene elastisch in dem jeweils erforderlichen Maße cusweichen, so daß eine entsprechende quer zur Nadelsymmetrieachse wirksame Elastizität gewährleistet ist und Brüche der Nadelschaftwangen damit sicher verhütet werden.On the smooth cylindrical outer surface of the one-piece axle pin, the tongue with its bearing bore is perfectly positioned with the largest possible area traa fraction and thus correspondingly small specific pivot bearing surface loads. The fixing elements deformed into the bore of the needle shaft cheeks ensure that the axle bolt does not slide outwards over time and can endanger the tongue in its storage. Since the needle shaft cheeks are not rigidly connected to the axle bolt, they can be elastically cussofted laterally transversely to the plane of symmetry, so that a corresponding one crosses the needle Effective elasticity is guaranteed and fractures of the needle shaft cheeks are reliably prevented.

In einer bevorzugten Ausführungsform ist aus dem Mater-ial der Nadelschaftwangen als Fixierelement jeweils ein ringförmiger Materialwulst ausgeformt. Außerdem ist es häufig zweckmäßig, wenn die Fixierelemente im axialen Abstand zu den benachbarten Stirnseiten des Achsbolzens stehen, so daß auch eine nach einwärts gerichtete elastische Bewegung der Nadelschaftwangen erforderlichenfalls unbehindert möglich ist.In a preferred embodiment, an annular material bead is formed from the material of the needle shaft cheeks as the fixing element. In addition, it is often expedient if the fixing elements are axially spaced from the adjacent end faces of the axle bolt, so that an inward elastic movement of the needle shaft cheeks is possible without hindrance if necessary.

Schließlich hat es sich als vorteilhaft erwiesen, wenn der Achsbolzen mit seinen nach außen weisenden Stirnseiten im wesentlichen in der dem Längsschlitz benachbarten Hälfte der Bohrung in den Nadelschaftwangen liegt.Finally, it has proven to be advantageous if the axle bolt, with its end faces pointing outwards, lies essentially in the half of the bore in the needle shaft cheeks adjacent to the longitudinal slot.

In der Zeichnung ist ein Ausführungsbeispiel des Gegenstandes der Erfindung dargestellt. Es zeigen:

  • Fig. 1 eine Zungennadel gemäß der Erfindung, teilweise im axialen Längsschnitt, im Ausschnitt und in einer Seitenansicht und
  • Fig. 2 die Zungennadel nach Fig. 1, geschnitten längs der Linie II-II der Fig. 1 in einer Seitenansicht und in einem anderen Maßstab.
In the drawing, an embodiment of the object of the invention is shown. Show it:
  • Fig. 1 is a latch needle according to the invention, partly in axial longitudinal section, in detail and in a side view
  • Fig. 2, the latch needle of Fig. 1, cut along the line II-II of Fig. 1 in a side view and on a different scale.

Die Zungennadel weist einen Nadelschaft 1 auf, an den einenends einstückig ein Haken 2 angeformt ist und der nicht weiter dargestellte Füße tragen kann, die in bekannter Weise mit Schloßteilen von Strickmaschinen etc. zusammenwirken. In dem Nadelschaft 1 ist ein symmetrisch zu der Längsmittelebene der Nadel verlaufender Längsschlitz 3 eingefräst, der sich über einen der Flusenabfuhr dienenden Durchbruch 4 zur Nadelschaftunterkante öffnet. In dem Längsschlitz 3 ist eine Zunge 5 schwenkbar gelagert, die einenends einen in der dargestellten geschlossenen Stellung die Hakenspitze 6 abdeckenden Zungenlöffel 7 trägt und deren in den Längsschlitz 3 mit parallelen Flanken eingepaßter Schaft 8 eine Lagerbohrung 9 aufweist. In den den Längsschlitz 3 seitlich begrenzenden Nadelschaftwangen 10 ist jeweils eine zu der bei 11 angedeuteten Schwenkachse der Zunge 5 koaxiale Querbohrung 12 ausgebildet, in die ein den Längsschlitz 3 überquerender glattwandiger zylindrischer Achsbolzen 13 im Schiebesitz eingefügt ist. Auf dem Achsbolzen 13 ist die Zunge mit ihrer Lagerbohrung 9 mit kleinem radialem Lagerspiel gelagert, das beispielsweise einer Durchmesserdifferenz von + 0,001 mm und weniger entspricht. Zusammen mit dem sehr engen Zungenlagerspiel in Achsrichtung zwischen den beiden Nadelschaftwangen 10 ergibt sich damit eine äußerst präzise und belastungsfähige Zungenlagerung, die sich gleichzeitig durch Verschleißfestigkeit auszeichnet.The latch needle has a needle shaft 1, on which a hook 2 is integrally formed at one end and which can carry feet, not shown, which interact in a known manner with lock parts of knitting machines etc. A longitudinal slot 3, which runs symmetrically to the longitudinal center plane of the needle, is milled into the needle shaft 1 and opens to the lower edge of the needle shaft via an opening 4 which serves to remove lint. In the longitudinal slot 3, a tongue 5 is pivotally mounted, which at one end carries a tongue spoon 7 covering the hook tip 6 in the closed position shown and whose shaft 8 fitted into the longitudinal slot 3 with parallel flanks has a bearing bore 9. In the needle shaft cheeks 10 which laterally delimit the longitudinal slot 3, a transverse bore 12 is formed in each case which is coaxial with the pivot axis of the tongue 5 indicated at 11, into which a smooth-walled cylindrical axle bolt 13 crossing the longitudinal slot 3 is inserted in the sliding seat. On the axle pin 13, the tongue with its bearing bore 9 is supported with a small radial bearing clearance, which corresponds, for example, to a diameter difference of + 0.001 mm and less. Together with the very narrow tongue bearing play in the axial direction between the two needle shaft cheeks 10, this results in an extremely precise and resilient tongue bearing which is also characterized by wear resistance.

Der Achsbolzen 13 liegt mit seinen nach außen weisenden parallelen Stirnflächen 14 in der dem Längsschlitz 3 benachbarten Hälfte der jeweiligen Bohrung 12, wobei er bei dem veranschaulichten Ausführungsbeispiel etwa bis zur Mitte der Bohrungstiefe raqt. Er ist in den Bohrungen 12 durch in diese Bohrungen ragende Fixierelemente axial festgelegt, die in der Nähe der freien Stirnflächen 14 des Achsbolzens 13 liegen und aus dem Material der Nadelschaftwangen 10-ausgeformt sind. Diese Fixierelemente sind bei dem dargestellten Ausführungsbeispiel jeweils in Gestalt eines ringförmigen Materialwulstes 15 ausgebildet, der in einem kleinen axialen Abstand 16 zu den benachbarten Stirnflächen 14 des Achsbolzens 13 liegt. Da die beiden Materialwulste 15 lediglich als axiale Anschläge wirken, die eine unzulässig weite seitliche Verschiebung des Bolzens 13 in den Bohrungen 12 verhindern, sonst aber keine starre Verbindung zwischen dem Achsbolzen 13 und den Nadelschaftwangen 10 besteht, können die Nadelschaftwangen 10 seitlich elastisch ausweichen, wenn sie im Betrieb einer entsprechenden Wechselbelastung unterworfen sind. Damit ist der Gefahr von Backenbrüchen abgeholfen.The axle pin 13 lies with its outwardly facing parallel end faces 14 in the half of the respective bore 12 adjacent to the longitudinal slot 3, it being in the illustrated embodiment roughly to the middle of the hole depth. It is axially fixed in the bores 12 by fixing elements projecting into these bores, which are located in the vicinity of the free end faces 14 of the axle bolt 13 and are 10-shaped from the material of the needle shaft cheeks. In the exemplary embodiment shown, these fixing elements are each in the form of an annular material bead 15, which lies at a small axial distance 16 from the adjacent end faces 14 of the axle bolt 13. Since the two material beads 15 only act as axial stops, which prevent an impermissibly wide lateral displacement of the bolt 13 in the bores 12, but otherwise there is no rigid connection between the axle pin 13 and the needle shaft cheeks 10, the needle shaft cheeks 10 can deflect elastically laterally if they are subjected to a corresponding alternating load during operation. This eliminates the risk of broken jaws.

Anstelle der Ringwülste 15 könnten auch finger- oder zahnartige Fixierelemente vorgesehen werden, die in dem Material der Nadelschaftseitenwangen 10 durch einen Prägevorgang ausgebildet sind und in die Bohrungen 12 in entsprechender Weise hineinragen.Instead of the annular beads 15, finger-like or tooth-like fixing elements could also be provided, which are formed in the material of the needle shaft side cheeks 10 by an embossing process and project into the bores 12 in a corresponding manner.

Claims (4)

1. Zungennadel für Textilmaschinen mit einer in einem Längsschlitz des Nadelschaftes verschwenkbaren Zunge, die mittels einer durchgehenden Lagerbohrung auf einem einstückigen zylindrischen Achsbolzen schwenkbar gelagert ist, der in entsprechende koaxiale Bohrungen der den Längsschlitz seitlich begrenzenden Nadelschaftwangen eingefügt und in diesen verschiebesicher fixiert ist, dadurch gekennzeichnet, daß die Länge des Achsbolzens (13) kleiner als die Nadelschaftdicke an der Zungenlagerstelle ist und der Achsbolzen (13) mit seinen nach außen weisenden freien Stirnseiten (14) in der Tiefe der Bohrungen (12) der Nadelschaftwangen (10) liegt, und daß aus dem Material der Nadelschaftwangen (10) in deren Bohrungen (12) ragende Fixierelemente (15) für den Achsbolzen (13) ausgeformt sind, die in der Nähe der freien Stirnflächen (14) des Achsbolzens (13) liegen.1.Tongue needle for textile machines with a pivotable tongue in a longitudinal slot of the needle shaft, which is pivotably mounted by means of a continuous bearing bore on a one-piece cylindrical axle bolt, which is inserted into corresponding coaxial bores of the needle shaft cheeks laterally delimiting the longitudinal slot and fixed in such a way that they cannot move that the length of the axle pin (13) is less than the needle shaft thickness at the tongue bearing point and the axle pin (13) with its outwardly facing free end faces (14) lies in the depth of the bores (12) of the needle shaft cheeks (10), and that from the material of the needle shaft cheeks (10) in their bores (12) protruding fixing elements (15) for the axle bolt (13) are formed, which are in the vicinity of the free end faces (14) of the axle bolt (13). 2. Zungennadel nach Anspruch 1, dadurch gekennzeichnet, daß aus dem Material der Nadelschaftwangen (10) als Fixierelement jeweils ein ringförmiger Materialwulst (15) ausgeformt ist.2. latch needle according to claim 1, characterized in that an annular material bead (15) is formed from the material of the needle shaft cheeks (10) as a fixing element. 3. Zungennadel nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Fixierelemente (15) im axialen Abstand zu den benachbarten Stirnseiten (14) des Achsbolzens (13) liegen.3. latch needle according to claim 1 or 2, characterized in that the fixing elements (15) are at an axial distance from the adjacent end faces (14) of the axle bolt (13). 4. Zungennadel nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Achsbolzen (13) mit seinen nach außen weisenden Stirnseiten (14) im wesentlichen in der dem Längsschlitz (3) benachbarten Hälfte der Bohrungen in den Nadelschaftwangen (10) liegt.4. latch needle according to one of the preceding claims, characterized in that the axle bolt (13) with its outwardly facing end faces (14) substantially in the longitudinal slot (3) adjacent half of the holes in the needle shaft cheeks (10).
EP86114374A 1986-01-11 1986-10-17 Latch needle for textile machines Expired - Lifetime EP0232466B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3600621 1986-01-11
DE3600621A DE3600621C1 (en) 1986-01-11 1986-01-11 Tongue needle for textile machines

Publications (2)

Publication Number Publication Date
EP0232466A1 true EP0232466A1 (en) 1987-08-19
EP0232466B1 EP0232466B1 (en) 1990-07-25

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EP86114374A Expired - Lifetime EP0232466B1 (en) 1986-01-11 1986-10-17 Latch needle for textile machines

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US (1) US4723425A (en)
EP (1) EP0232466B1 (en)
JP (1) JPS62162056A (en)
KR (1) KR890001494B1 (en)
CN (1) CN86108796B (en)
CA (1) CA1270123A (en)
DE (2) DE3600621C1 (en)
ES (1) ES2016238B3 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4334051C1 (en) * 1993-10-06 1995-02-16 Groz & Soehne Theodor Latch needle for textile machines

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3800802C1 (en) * 1988-01-14 1989-02-16 Theodor Groz & Soehne & Ernst Beckert Nadelfabrik Kg, 7470 Albstadt, De
FR2639964B1 (en) * 1988-12-06 1991-01-11 Aerospatiale IMPROVED OPENING CHAS NEEDLE
EP2224048B1 (en) * 2009-02-26 2011-08-31 Groz-Beckert KG Latch needle with rotating axle pin
EP2604359B1 (en) 2011-12-14 2017-06-14 Groz-Beckert KG Latch needle with improved latch bearing and its method of manufacturing

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1340474A (en) * 1962-11-22 1963-10-18 Groz & Soehne Theodor Pallet needle for knitting machines or similar machines
CH476141A (en) * 1967-12-18 1969-07-31 Groz & Soehne Theodor Latch needle for knitting machines

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US210653A (en) * 1878-12-10 Improvement in knitting-machine needles
US2767566A (en) * 1955-01-25 1956-10-23 George A Parsons Latch needle pivot
GB836297A (en) * 1958-01-23 1960-06-01 Torrington Co Improvements in or relating to bearings for latch knitting needles
FR1203866A (en) * 1958-05-20 1960-01-21 Lebocey Aiguilles Hinged paddle needle for hosiery crafts
DE1159585B (en) * 1961-11-23 1963-12-19 Groz & Soehne Theodor Latch needle for knitting machines
GB1142409A (en) * 1966-06-21 1969-02-05 Groz & Soehne Theodor A latch needle for knitting machines
DE1296734B (en) * 1967-12-18 1969-06-04 Groz & Soehne Theodor Latch needle for knitting machines
DE1906892A1 (en) * 1969-02-12 1970-05-14
US3934109A (en) * 1972-06-23 1976-01-20 The Torrington Company Latch pivot for latch needle
DE3546037A1 (en) * 1985-03-14 1986-09-18 Ulrich Dipl.-Ing. 7470 Albstadt Hofmann Method for the production of the latch support in knitting-machine needles

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1340474A (en) * 1962-11-22 1963-10-18 Groz & Soehne Theodor Pallet needle for knitting machines or similar machines
CH476141A (en) * 1967-12-18 1969-07-31 Groz & Soehne Theodor Latch needle for knitting machines

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4334051C1 (en) * 1993-10-06 1995-02-16 Groz & Soehne Theodor Latch needle for textile machines
EP0647733A1 (en) * 1993-10-06 1995-04-12 Theodor Groz & Söhne & Ernst Beckert Nadelfabrik Commandit-Gesellschaft Latch needle for textile machines
US5488840A (en) * 1993-10-06 1996-02-06 Theodore Groz & Sohne Latch needle for a textile machine

Also Published As

Publication number Publication date
EP0232466B1 (en) 1990-07-25
KR890001494B1 (en) 1989-05-04
KR870007321A (en) 1987-08-18
CN86108796B (en) 1988-09-14
DE3672997D1 (en) 1990-08-30
JPS62162056A (en) 1987-07-17
DE3600621C1 (en) 1987-05-07
US4723425A (en) 1988-02-09
CN86108796A (en) 1987-07-22
CA1270123A (en) 1990-06-12
ES2016238B3 (en) 1990-11-01
JPH0157174B2 (en) 1989-12-04

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