EP0647733B1 - Latch needle for textile machines - Google Patents

Latch needle for textile machines Download PDF

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Publication number
EP0647733B1
EP0647733B1 EP94115085A EP94115085A EP0647733B1 EP 0647733 B1 EP0647733 B1 EP 0647733B1 EP 94115085 A EP94115085 A EP 94115085A EP 94115085 A EP94115085 A EP 94115085A EP 0647733 B1 EP0647733 B1 EP 0647733B1
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EP
European Patent Office
Prior art keywords
tongue
bearing bore
latch
needle
shaft
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.)
Expired - Lifetime
Application number
EP94115085A
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German (de)
French (fr)
Other versions
EP0647733A1 (en
Inventor
Kurt Wiedenhöfer
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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Filing date
Publication date
Application filed by Groz Beckert KG filed Critical Groz Beckert KG
Publication of EP0647733A1 publication Critical patent/EP0647733A1/en
Application granted granted Critical
Publication of EP0647733B1 publication Critical patent/EP0647733B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • 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 one in a tongue slot of the needle shaft a tongue axis by means of a continuous bearing bore needle tongue pivotally mounted in the tongue shaft.
  • Switch needles of the type described in the opening paragraph are in used in a number of textile machines, mainly in Knitting and knitting machines, but also e.g. in special sewing machines.
  • At the storage of the tongue both in terms of mechanical resilience, as high demands also on the accuracy of the tongue guide posed.
  • the strain on the tongue is particularly high, though natural fiber yarns soiled in high-speed knitting machines, e.g. OE yarns, but also elastomers processed will.
  • the tongue storage can be designed differently. So is it is known from EP 0 232 466, the tongue by means of its To store the bearing bore on a continuous axle pin.
  • the axle pin is mounted in needle shaft cheek holes, in which fixing elements as axial stops for the Axle bolts.
  • tongue needles are also known in which the tongue on two pressed out of the material of the needle shaft cheeks Bearing pin is pivotally mounted (US-A-39 34 109, GB-C-836 297).
  • Needle shaft cheek to provide a hole and in this an axle pin with a length of about 2/3 of the needle shaft thickness press in on the opposite Needle shaft cheek rests.
  • the object of the invention is to remedy this and a To create latch needle that has a longer life than conventional latch needles in terms of breaking strength of the tongue shaft.
  • the latch needle mentioned characterized in that the bearing bore in Tongue shaft is arranged so that the distances between the edge of the bearing bore and the tongue shaft upper and bottom are different.
  • the invention can also be used with all Tongue needles are used where one-sided Wear of the bearing bore from other than those described Reasons occurs.
  • the distance between the edge of the bearing bore and the tongue shaft underside half the distance between the edge of the bearing bore and the tongue shaft top.
  • the ratio of these distances 1: 3 is advantageous.
  • the latch needle shown in FIGS. 1 and 2 has one Needle shaft 1, which carries a hook 2 at one end and at the other end one or more feet and a tracking may have, which in a known manner with the Lock parts, for example, interact with a knitting machine and are not shown further.
  • a tongue slot 5 is milled into the needle shaft 1, which takes up a tongue 6.
  • the needle tongue 6 is wedge-shaped in shape, the The tip of the wedge forms a toothed tongue spoon 7, which, as can be seen from FIG. 1, with the tongue 6 closed rests on the hook tip 8.
  • a tongue shaft 9 follows.
  • the tongue shaft bottom 10 limited together when tongue 6 closed with the hook 2 the thread space 11 of the needle.
  • the tongue shaft top 12 is the tongue shaft underside 10 across from.
  • the tongue shaft 9 is a continuous cylindrical Bearing bore 13 arranged, the axis with the Tongue axis 14 is concentric.
  • the bearing bore 13 is arranged so that there are different distances 15, 16 to the tongue shaft top 12 or bottom 10.
  • the distance 15 to the tongue upper side 12 about twice the distance 16 to the underside of the tongue shaft 10.
  • 16 can also be chosen differently. For many practical Use cases have proven to be useful if the (shorter) distance 16 to the underside of the tongue shaft about a third of the distance 15 to the top of the tongue shaft is.
  • the distance 17 of the boundary of the bearing bore 13 to the End of the tongue 6, which lies opposite the tongue spoon 7, is approximately as large as the distance 15 between the edges the bearing bore 13 and the tongue shaft top 12. All distances 15, 16 and 17 are approximately radial from the Boundaries of the bearing bore 13 measured so that the smallest value results, whereby different tongue tongues design deviations are allowed by this rule.
  • the tongue slot 5 opens on the underside of the needle shaft to an opening 18, discharged through the fluff will.
  • the tongue slot 5 is on the side, i.e. across to Longitudinal axis of symmetry of the needle shaft 1 of needle shaft cheeks 19 limited.
  • the tongue 6 is in the tongue slot 5 around an axis bolt 20 forming the tongue axis 14 Play pivoted.
  • the axle pin 20 runs with Game through the bearing bore 13 and is in holes in the needle shaft cheeks 19 held.
  • Fig. 2 the needle tongue 6 is shown in reserve. In in this position, the needle tongue 6 lies on the underside the tongue slot 5 at a point 21 on the needle shaft 1 on.
  • the bearing bore 13 is arranged so that the distance 16th between the edge of the bearing bore 13 and the tongue shaft underside 10 larger than the distance 15 between the Boundary of the bearing bore 13 and the tongue shaft top 12 is.
  • the ratio of the two distances 15, 16 to each other then apply the same preferred reciprocally Values as in the described exemplary embodiment, i.e. Distance 16 to distance 15 is approximately 2: 1 or 3: 1.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)

Description

Die Erfindung betrifft eine Zungennadel für Textilmaschinen mit einer in einem Zungenschlitz des Nadelschaftes um eine Zungenachse mittels einer durchgehenden Lagerbohrung im Zungenschaft schwenkbar gelagerten Nadelzunge.The invention relates to a latch needle for textile machines with one in a tongue slot of the needle shaft a tongue axis by means of a continuous bearing bore needle tongue pivotally mounted in the tongue shaft.

Zungennadeln der eingangs beschriebenen Art werden in einer Reihe von Textilmaschinen verwendet, überwiegend in Strick- und Wirkmaschinen, aber auch z.Bsp. in Spezial-Nähmaschinen. An die Lagerung der Zunge werden dabei sowohl hinsichtlich der mechanischen Belastbarkeit, als auch der Genauigkeit der Zungenführung hohe Anforderungen gestellt. Die Belastung der Zunge ist besonders hoch, wenn in schnellaufenden Strickmaschinen verschmutzte Naturfasergarne, z.Bsp. OE Garne, aber auch Elastomere verarbeitet werden.Switch needles of the type described in the opening paragraph are in used in a number of textile machines, mainly in Knitting and knitting machines, but also e.g. in special sewing machines. At the storage of the tongue both in terms of mechanical resilience, as high demands also on the accuracy of the tongue guide posed. The strain on the tongue is particularly high, though natural fiber yarns soiled in high-speed knitting machines, e.g. OE yarns, but also elastomers processed will.

Die Zungenlagerung kann verschieden gestaltet sein. So ist es aus der EP 0 232 466 bekannt, die Zunge mittels ihrer Lagerbohrung auf einem durchgehenden Achsbolzen zu lagern. Der Achsbolzen ist in Nadelschaftwangenbohrungen gelagert, in denen sich Fixierelemente als axiale Anschläge für den Achsbolzen befinden. The tongue storage can be designed differently. So is it is known from EP 0 232 466, the tongue by means of its To store the bearing bore on a continuous axle pin. The axle pin is mounted in needle shaft cheek holes, in which fixing elements as axial stops for the Axle bolts.

Es sind aber auch Zungennadeln bekannt bei denen die Zunge auf zwei aus dem Material der Nadelschaftwangen herausgedrückten Lagerzapfen schwenkbar gelagert ist (US-A- 39 34 109, GB-C- 836 297).But tongue needles are also known in which the tongue on two pressed out of the material of the needle shaft cheeks Bearing pin is pivotally mounted (US-A-39 34 109, GB-C-836 297).

Es gibt auch den Vorschlag (DE-A- 35 46 C37) nur in einer Nadelschaftwange eine Bohrung vorzusehen und in diese einen Achsstift mit einer Länge von etwa 2/3 der Nadelschaftdicke einzupressen, der an der gegenüberliegenden Nadelschaftwange anliegt.There is also only one proposal (DE-A-35 46 C37) Needle shaft cheek to provide a hole and in this an axle pin with a length of about 2/3 of the needle shaft thickness press in on the opposite Needle shaft cheek rests.

Bei allen diesen Zungenlagerungen geht es darum vorzeitigen Brüchen der Nadelschaftwangen vorzubeugen, während die Zunge selbst in den Hintergrund tritt. Ihre Lagerbohrung ist durchweg in Querrichtung "mittig" im Zungenschaft angeordnet, derart, daß die Abstande zwischen der Berandung der Lagerbohrung und der Zungenschaftober- und -unterseite etwa gleich sind.All of these tongue bearings are about premature To prevent fractures of the needle shaft cheeks while the Tongue fades into the background. Your bearing hole is consistently "centrally" in the tongue shaft in the transverse direction arranged such that the distances between the edges the bearing bore and the tongue shaft upper and -bottom side are about the same.

Ein anderes bei Zungennadeln auftretendes Problem bleibt dabei ungelöst. Durch Reibungs- und vor allem Schlagverschleiß beim harten Aufschlagen der Zunge in der Rücklage und die daraus resultierende Hebelwirkung kommt es zum Bruch des Zungenschaftes im Bereich der Lagerbohrung, der die Lebensdauer der Nadel begrenzt.Another problem that occurs with latch needles remains thereby unsolved. Through friction and especially impact wear when the tongue hits hard in the reserve and the resulting leverage comes into play Breakage of the tongue shaft in the area of the bearing bore, the the life of the needle is limited.

Aufgabe der Erfindung ist es hier abzuhelfen und eine Zungennadel zu schaffen, die eine größere Lebensdauer als herkömmliche Zungennadeln in Bezug auf die Bruchfestigkeit des Zungenschaftes aufweist.The object of the invention is to remedy this and a To create latch needle that has a longer life than conventional latch needles in terms of breaking strength of the tongue shaft.

Zur Lösung dieser Aufgabe ist die eingangs genannte Zungennadel dadurch gekennzeichnet, daß die Lagerbohrung im Zungenschaft so angeordnet ist, daß die Abstände zwischen der Berandung der Lagerbohrung und der Zungenschaftober- und -unterseite unterschiedlich sind. To solve this problem is the latch needle mentioned characterized in that the bearing bore in Tongue shaft is arranged so that the distances between the edge of the bearing bore and the tongue shaft upper and bottom are different.

Durch eingehende Lebensdaueranalysen von Zungennadeln wurde festgestellt, daß nach längerem Betrieb eine einseitige Abnutzung der Lagerbohrung zu einer Zungenschaftseite hin erfolgt; die Lagerbohrung wird "ovalisiert". Das hat zur Folge, daß der Zungenschaft im Bereich der Lagerbohrung schließlich an einer Stelle seiner Berandung bricht. Die einseitige Abnutzung erfolgt normalerweise auf der der Zungenschaftoberseite zugewandten Seite, doch kann es, abhängig von der Nadelkonstruktion, bspw. bei größerem Überstand des Zungenlöffels über die Hakenspitze auch vorkommen, daß sich die Lagerbohrung zur Unterseite des Zungenschaftes hin ausweitet.Through in-depth service life analyzes of latch needles it was found that after a long period of operation a one-sided Wear of the bearing bore to one side of the tongue out there; the bearing bore is "ovalized". The has the consequence that the tongue shaft in the area of the bearing bore finally at one point in its boundary breaks. Unilateral wear and tear usually occurs on the side facing the tongue shaft top, but can it, depending on the needle construction, for example with a larger one Tongue spoon also protrudes from the tip of the hook occur that the bearing bore to the bottom of the Tongue extends.

Selbstverständlich kann die Erfindung auch bei allen Zungennadeln angewendet werden, bei denen eine einseitige Abnutzung der Lagerbohrung aus anderen als den beschriebenen Gründen auftritt.Of course, the invention can also be used with all Tongue needles are used where one-sided Wear of the bearing bore from other than those described Reasons occurs.

Im Vergleich zu einer Nadelzunge, in der sich die Lagerbohrung in der Mitte zwischen der Zungenschaftober- und -unterseite befindet, ist beim Gegenstand der Erfindung der durch Verschleiß besonders belastete Bereich des Zungenschaftes erheblich breiter, so daß sich eine erhöhte Widerstandsfestigkeit der Zunge ergibt, ohne daß deren Beweglichkeit behindert würde.Compared to a needle tongue in which the bearing bore in the middle between the tongue shaft and -bottom is the subject of the invention the area of the Tongue shaft considerably wider, so that an increased Resistance of the tongue results, without that Mobility would be hindered.

Dabei erweist es sich als Vorteil, daß der Zungenschaft selbst nicht breiter als bei bekannten Nadeln ist, so daß die Masse der Zunge, die im allgemeinen so klein wie möglich sein soll, nicht erhöht ist. Ein weiterer Vorteil ist, daß zur Herstellung der neuen Nadel keine neuen Stanzwerkzeuge erforderlich sind, da sich die Kontur der Nadelschaftwangen nicht ändert.It proves to be an advantage that the tongue shaft itself is not wider than with known needles, so that the mass of the tongue, which is generally as small as should be possible is not increased. Another advantage is that to make the new needle no new ones Punching tools are required because the contour of the Needle shaft cheeks does not change.

In einer bevorzugten Ausführungsform der Erfindung beträgt der Abstand zwischen der Berandung der Lagerbohrung und der Zungenschaftunterseite die Hälfte des Abstandes zwischen der Berandung der Lagerbohrung und der Zungenschaftoberseite. Es gibt auch Fälle in denen das Verhältnis dieser Abstände 1:3 vorteilhaft ist.In a preferred embodiment of the invention the distance between the edge of the bearing bore and the tongue shaft underside half the distance between the edge of the bearing bore and the tongue shaft top. There are also cases where the ratio of these distances 1: 3 is advantageous.

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

  • Fig. 1 eine Zungennadel gemäß der Erfindung in einer Seitenansicht mit geschlossener Zunge, teilweise als axialer Längsschnitt und
  • Fig. 2 die Zungennadel aus Fig. 1 in entsprechender Darstellung mit der Zunge in Rücklage.
    • 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 in a side view with the tongue closed, partly as an axial longitudinal section and
  • Fig. 2, the latch needle of Fig. 1 in a corresponding representation with the tongue in reserve.

    • Die in Fig. 1 und 2 gezeigte Zungennadel weist einen Nadelschaft 1 auf, der einenends einen Haken 2 trägt und anderenends einen Fuß oder mehrere Füße und eine Nachführung aufweisen kann, die in bekannter Weise mit den Schloßteilen bspw. einer Strickmaschine zusammenwirken und nicht weiter dargestellt sind. In dem Nadelschaft 1 ist zwischen dem Hals 3 und der Kehle 4 symmetrisch zur Längsachse des Nadelschaftes 1 ein Zungenschlitz 5 eingefräst, der eine Zunge 6 aufnimmt.The latch needle shown in FIGS. 1 and 2 has one Needle shaft 1, which carries a hook 2 at one end and at the other end one or more feet and a tracking may have, which in a known manner with the Lock parts, for example, interact with a knitting machine and are not shown further. In the needle shaft 1 is between the neck 3 and the throat 4 symmetrical to the longitudinal axis a tongue slot 5 is milled into the needle shaft 1, which takes up a tongue 6.

    Die Nadelzunge 6 ist von keilförmiger Gestalt, wobei die Spitze des Keils einen gezaschten Zungenlöffel 7 bildet, der wie aus Fig. 1 ersichtlich, bei geschlossener Zunge 6 auf der Hakenspitze 8 aufliegt. An den Zungenlöffel 7 schließt sich ein Zungenschaft 9 an. Die Zungenschaftunterseite 10 begrenzt bei geschlossener Zunge 6 zusammen mit dem Haken 2 den Fadenraum 11 der Nadel. Die Zungenschaftoberseite 12 liegt der Zungenschaftunterseite 10 gegenüber. In dem dem Zungenlöffel 7 abgewandten Endbereich des Zungenschaftes 9 ist eine durchgängige zylindrische Lagerbohrung 13 angeordnet, deren Achse mit der Zungenachse 14 konzentrisch ist. Die Lagerbohrung 13 ist so angeordnet, daß sich unterschiedliche Abstände 15, 16 zur Zungenschaftober- 12 bzw. -unterseite 10 ergeben. The needle tongue 6 is wedge-shaped in shape, the The tip of the wedge forms a toothed tongue spoon 7, which, as can be seen from FIG. 1, with the tongue 6 closed rests on the hook tip 8. On the tongue spoon 7 a tongue shaft 9 follows. The tongue shaft bottom 10 limited together when tongue 6 closed with the hook 2 the thread space 11 of the needle. The tongue shaft top 12 is the tongue shaft underside 10 across from. In the end area facing away from the tongue spoon 7 the tongue shaft 9 is a continuous cylindrical Bearing bore 13 arranged, the axis with the Tongue axis 14 is concentric. The bearing bore 13 is arranged so that there are different distances 15, 16 to the tongue shaft top 12 or bottom 10.

    Und zwar ist der Abstand 15 zur Zungenschaftoberseite 12 etwa doppelt so groß wie der Abstand 16 zur Zungenschaftunterseite 10. Abhängig von der Konstruktion der Zungennadel und deren Zunge kann das Verhältnis der beiden Abstände 15, 16 auch anders gewählt sein. Für viele praktische Anwendungsfälle hat es sich als zweckmäßig erwiesen, wenn der (kürzere) Abstand 16 zur Zungenschaftunterseite etwa ein Drittel des Abstandes 15 zur Zungenschaftoberseite beträgt.Namely, the distance 15 to the tongue upper side 12 about twice the distance 16 to the underside of the tongue shaft 10. Depending on the construction of the latch needle and their tongue can be the ratio of the two distances 15, 16 can also be chosen differently. For many practical Use cases have proven to be useful if the (shorter) distance 16 to the underside of the tongue shaft about a third of the distance 15 to the top of the tongue shaft is.

    Der Abstand 17 der Berandung der Lagerbohrung 13 zu dem Ende der Zunge 6, das dem Zungenlöffel 7 gegenüberliegt, ist etwa so groß wie der Abstand 15 zwischen der Berandung der Lagerbohrung 13 und der Zungenschaftoberseite 12. Alle genannten Abstände 15, 16 und 17 sind etwa radial von der Berandung der Lagerbohrung 13 so nach außen gemessen, daß sich der jeweils kleinste Wert ergibt, wobei bei unterschiedlich ausgestalten Zungenschäften durchaus Abweichungen von dieser Regel erlaubt sind.The distance 17 of the boundary of the bearing bore 13 to the End of the tongue 6, which lies opposite the tongue spoon 7, is approximately as large as the distance 15 between the edges the bearing bore 13 and the tongue shaft top 12. All distances 15, 16 and 17 are approximately radial from the Boundaries of the bearing bore 13 measured so that the smallest value results, whereby different tongue tongues design deviations are allowed by this rule.

    Der Zungenschlitz 5 öffnet sich auf der Nadelschaftunterseite zu einem Durchbruch 18, durch den Flusen abgeführt werden. Der Zungenschlitz 5 ist seitlich, d.h. quer zur Symmetrielängsachse des Nadelschaftes 1 von Nadelschaftwangen 19 begrenzt. In dem Zungenschlitz 5 ist die Zunge 6 um einen die Zungenachse 14 bildenden Achsbolzen 20 mit Spiel schwenkbar gelagert. Der Achsbolzen 20 verlauft mit Spiel durch die Lagerbohrung 13 und ist in Bohrungen in den Nadelschaftwangen 19 gehaltert.The tongue slot 5 opens on the underside of the needle shaft to an opening 18, discharged through the fluff will. The tongue slot 5 is on the side, i.e. across to Longitudinal axis of symmetry of the needle shaft 1 of needle shaft cheeks 19 limited. The tongue 6 is in the tongue slot 5 around an axis bolt 20 forming the tongue axis 14 Play pivoted. The axle pin 20 runs with Game through the bearing bore 13 and is in holes in the needle shaft cheeks 19 held.

    Fig. 1 zeigt die Nadelzunge 6 in der geschlossenen Stellung, in der ihr Löffel 7 auf der Hakenspitze 8 aufliegt.1 shows the needle tongue 6 in the closed position, in which her spoon 7 rests on the hook tip 8.

    In Fig. 2 ist die Nadelzunge 6 in Rücklage dargestellt. In dieser Position liegt die Nadelzunge 6 an der Unterseite des Zungenschlitzes 5 an einer Stelle 21 auf dem Nadelschaft 1 auf. In Fig. 2 the needle tongue 6 is shown in reserve. In in this position, the needle tongue 6 lies on the underside the tongue slot 5 at a point 21 on the needle shaft 1 on.

    Kommt die Nadelzunge in Rücklage, so schlägt sie an der Stelle 21 auf den Nadelschaft 1 hart auf, was wegen der Hebelwirkung zu einer hohen Beanspruchung des Zungenschaftes 9 in dem Bereich zwischen der Lagerbohrung 13 und der Zungenschaftoberseite 12 führt.If the needle tongue comes into reserve, it hits the Place 21 on the needle shaft 1 hard, because of the Leverage to high stress on the tongue shaft 9 in the area between the bearing bore 13 and the tongue shaft top 12 leads.

    Es kann auch Fälle geben, in denen der erhöhte Verschleiß des Zungenschaftes 9 zwischen der Lagerbohrung 13 und der Zungenschaftunterseite 10 erfolgt, was bspw. bei Nadeln mit großem Zungenvorsprung denkbar ist. In solchen Fällen wird die Lagerbohrung 13 so angeordnet, daß der Abstand 16 zwischen der Berandung der Lagerbohrung 13 und der Zungenschaftunterseite 10 größer als der Abstand 15 zwischen der Berandung der Lagerbohrung 13 und der Zungenschaftoberseite 12 ist. Bezüglich des Verhältnisses der beiden Abstände 15, 16 zueinander gelten dann reziprok die gleichen bevorzugten Werte wie bei dem beschriebenen Ausführungsbeispiel, d.h. Abstand 16 zu Abstand 15 ist etwa 2:1 bzw. 3:1.There may also be cases where the increased wear and tear the tongue shaft 9 between the bearing bore 13 and the Tongue shaft underside 10 takes place, for example in the case of needles with a large tongue projection is conceivable. In such cases the bearing bore 13 is arranged so that the distance 16th between the edge of the bearing bore 13 and the tongue shaft underside 10 larger than the distance 15 between the Boundary of the bearing bore 13 and the tongue shaft top 12 is. Regarding the ratio of the two distances 15, 16 to each other then apply the same preferred reciprocally Values as in the described exemplary embodiment, i.e. Distance 16 to distance 15 is approximately 2: 1 or 3: 1.

    Claims (5)

    1. Latch needle for textile machines with a needle latch supported to pivot in a sawslot of the needle shank around a latch axis by means of a continuous bearing bore in the needle shank, characterised in that the bearing bore (13) is arranged in the latch shank (9) in such a manner that the distances (15, 16) between the edge of the bearing bore (13) and the upper (12) and lower side (10) of the latch shank are different.
    2. Latch needle according to Claim 1, characterised in that the distance (15) between the edge of the bearing bore (13) and the upper side (12) of the latch shank is greater than the distance (16) between the edge of the bearing bore (13) and the lower side (10) of the latch shank.
    3. Latch needle according to Claim 2, characterised in that the distance (15) between the edge of the bearing bore (13) and the upper side (12) of the latch shank amounts to about twice to three times the distance (16) between the edge of the bearing bore (13) and the lower side (10) of the latch shank.
    4. Latch needle according to Claim 1, characterised in that the distance (15) between the edge of the bearing bore (13) and the upper side (12) of the latch shank is smaller than the distance (16) between the edge of the bearing bore (13) and the lower side (10) of the latch shank.
    5. Latch needle according to Claim 4, characterised in that the distance (15) between the edge of the bearing bore (13) and the upper side (12) of the latch shank amounts to about half to one third of the distance (16) between the edge of the bearing bore (13) and the lower side (10) of the latch shank.
    EP94115085A 1993-10-06 1994-09-24 Latch needle for textile machines Expired - Lifetime EP0647733B1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    DE4334051 1993-10-06
    DE4334051A DE4334051C1 (en) 1993-10-06 1993-10-06 Latch needle for textile machines

    Publications (2)

    Publication Number Publication Date
    EP0647733A1 EP0647733A1 (en) 1995-04-12
    EP0647733B1 true EP0647733B1 (en) 1998-04-01

    Family

    ID=6499535

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP94115085A Expired - Lifetime EP0647733B1 (en) 1993-10-06 1994-09-24 Latch needle for textile machines

    Country Status (6)

    Country Link
    US (1) US5488840A (en)
    EP (1) EP0647733B1 (en)
    JP (1) JP2983852B2 (en)
    CA (1) CA2133709C (en)
    DE (2) DE4334051C1 (en)
    ES (1) ES2114106T3 (en)

    Families Citing this family (3)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE10341630B4 (en) * 2003-09-10 2006-11-16 Groz-Beckert Kg latch needle
    DE102004049061B4 (en) 2004-10-08 2006-08-24 Groz-Beckert Kg latch needle
    DE502005009453D1 (en) 2005-06-09 2010-06-02 Groz Beckert Kg Tongue needle for textile machines

    Family Cites Families (7)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE616441C (en) * 1932-02-05 1935-07-29 Hosiery Developments Ltd Knitting needle with several tongues arranged one below the other
    FR1040974A (en) * 1950-08-01 1953-10-20 Knitting needle
    GB836297A (en) * 1958-01-23 1960-06-01 Torrington Co Improvements in or relating to bearings for latch knitting needles
    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
    DE3600621C1 (en) * 1986-01-11 1987-05-07 Groz & Soehne Theodor Tongue needle for textile machines
    JPH0223619A (en) * 1988-07-12 1990-01-25 Seiko Epson Corp Manufacture of semiconductor device

    Also Published As

    Publication number Publication date
    DE4334051C1 (en) 1995-02-16
    EP0647733A1 (en) 1995-04-12
    ES2114106T3 (en) 1998-05-16
    DE59405571D1 (en) 1998-05-07
    JPH07150451A (en) 1995-06-13
    US5488840A (en) 1996-02-06
    JP2983852B2 (en) 1999-11-29
    CA2133709C (en) 1999-01-26
    CA2133709A1 (en) 1995-04-07

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