EP0564987A1 - Needle bar for chain drawing frame - Google Patents

Needle bar for chain drawing frame Download PDF

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Publication number
EP0564987A1
EP0564987A1 EP93105449A EP93105449A EP0564987A1 EP 0564987 A1 EP0564987 A1 EP 0564987A1 EP 93105449 A EP93105449 A EP 93105449A EP 93105449 A EP93105449 A EP 93105449A EP 0564987 A1 EP0564987 A1 EP 0564987A1
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EP
European Patent Office
Prior art keywords
groove
strip
thickness
plastic
needle bar
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EP93105449A
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German (de)
French (fr)
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EP0564987B1 (en
Inventor
Rainer F. Schmauser
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Leonhard Schmauser & Co Firma GmbH
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Leonhard Schmauser & Co Firma GmbH
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    • DTEXTILES; PAPER
    • D01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01HSPINNING OR TWISTING
    • D01H5/00Drafting machines or arrangements ; Threading of roving into drafting machine
    • D01H5/02Gill boxes or other drafting machines employing fallers or like pinned bars
    • D01H5/12Details
    • D01H5/14Pinned bars

Definitions

  • the invention relates to a needle bar for chain sections, in which a metal support bar is provided with a longitudinal groove which is delimited by a longer leg and a shorter leg, each of which forms an inner surface, and in which a carrier strip of a pinstrip is inserted in the groove is and the support bar has a solid plastic, a row of needles receiving strip core and two strip-like metal strips which delimit them and which are assigned with outer surfaces to the inner surfaces of the legs, the support strip having a pre-thickness before being inserted into the groove has, which is assigned a groove width of the support rod groove.
  • the solid or solid, ie not foamy plastic is rigid in that it is not compressible to a considerable extent.
  • the pre-thickness of the carrier strip is slightly smaller than the width of the groove and the carrier strip is relatively easily pushed into the groove during assembly.
  • the carrier strip is held in the groove by gluing, the outer surfaces of the metal strips sticking to the inner surfaces of the legs.
  • the metal strips are glued to the metal leg using a hot-melt adhesive or a two-component adhesive.
  • the needles are in contact with the metal bands. Gluing the carrier strip in the groove of the carrier rod presents complex difficulties.
  • the gluing has so far been necessary because the carrier strip provided with the metal strips is under the given chain stretching loads due to the shorter leg in a clamping by mere press fit in the groove would not be sufficiently stuck, such a press fit would be difficult to achieve with regard to manufacturing tolerances.
  • the needle bar according to the invention solves this problem, characterized in that the pre-thickness of the carrier strip is 8.5-11.5% greater than the groove width, that a layer formed by the plastic is provided between the needles and each metal band, whose thickness is at least 4% of the pre-thickness of the carrier strip and that the plastic is elastically compressible with a modulus of elasticity of 1,400 to 1,800 N / mm2.
  • the substantially bubble-free, full plastic is pressed in volume when the carrier bar is pressed into the groove, i.e. compressed in itself.
  • the volume compression of the plastic is elastic, so that the support rod is permanently sufficiently tight in the groove.
  • the metal strips, which have a stabilizing effect on the support rod, are retained. A sticking of the support rod in the groove is avoided.
  • the tight fit given by elastic compression is given in spite of the shorter leg, which is towered over by the support rod. Since the needles do not completely bridge the distance between the two metal strips, there is an elastically compressible plastic stretch between each metal strip and the needle.
  • the clamping forces of the support rod in the groove are given by the elastic expansion pressure of the plastic. Any manufacturing tolerances are simply taken into account.
  • the layer thickness is determined upwards by the needle thickness and the groove width.
  • the pre-thickness is 9-11% greater than the groove width, if the layer thickness is at least 5% of the pre-thickness and / or if the elastic modulus is 1,500 - 1,700 n / mm2. These values prove to be particularly useful in practice.
  • the plastic is usually low molecular weight and a mixture based on polyamide.
  • the plastic used has the following properties: a flexural modulus of elasticity of about 2 x 103 mm2 is provided and the hardness according to DIN 53456 is e.g. at 80 N / mm2. After being pressed into the groove, the plastic does not shrink and the elasticity does not decrease significantly either. The plastic is therefore not plastically deformable.
  • the groove and the carrier strip are generally constant over the length in width or thickness.
  • the shorter leg measured from the bottom of the groove, is usually at most a third, e.g. approx. 40% or 52%, the size of the longer leg.
  • the needles are e.g. rectangular flat with rounded faces or usually round, because then they are equally stiff on all sides.
  • the metal strips are usually sheet steel strips and have e.g. a thickness of 0.08-0.25 mm.
  • the inner surfaces of the legs and the outer surfaces of the metal strips are each formed from metal and are usually smooth, i.e. non-protruding and not roughened. In spite of the smoothness of the inner and outer surfaces, the carrier strip remains firmly in place. It is therefore particularly expedient and advantageous if the metal strips with a smooth outer surface each rest on a smooth inner surface of one of the legs.
  • the metal strips are bent towards the bottom of the groove, forming a taper of the carrier strip, towards one another in the end region.
  • the taper serving as a threading aid is designed in a simple manner without impairing the flat contact of the outer surfaces with the inner surfaces too much.
  • the plastic is provided a protrusion higher than the metal strips. This is the result of careful attention being paid to ensuring that the plastic is pressed between the two metal strips with no bubbles or voids.
  • the groove width is approximately 2.20 mm and the pre-thickness of the
  • the carrier strip has an oversize of approx. 10% of the groove width.
  • the carrier rod which has not yet been compressed, there is a plastic layer of approximately 0.10 mm between each metal band and the needle, ie each layer has a thickness of approximately 4.5% of the groove width.
  • the shorter leg is, for example, approx. 5 mm high, the height of the curved end area being equal to or less than 1 mm.
  • the needle bar according to the drawing has a metal carrier bar 1, which forms a longitudinally extending shorter leg 2 and a parallel longitudinally extending longer leg 3, which delimit a groove 4 between them.
  • a carrier strip 5 of a pinstrip 6 is inserted into the groove 4.
  • the carrier strip 5 is equipped with a series of needles 7 which are parallel to one another and spaced apart from one another.
  • the two legs 2, 3 each form a smooth inner surface 8 against which a smooth outer surface 9 of the carrier strip 5 is in continuous contact.
  • the height of the shorter leg 2 is considerably much smaller than the height of the support bar, which extends above the shorter leg 2 in height and is in constant contact with the longer leg 3 in height.
  • the carrier strip 5 has a strip-like wide metal strip 10 on both longitudinal sides, which is bent to form a taper in the lower end region 11.
  • the needles 7 begin at the lower end with the metal strips 10.
  • the space between the two metal strips 10 which is not occupied by the needles 7 is filled with plastic 12, which is not only between two adjacent needles 7, but also between each needle and each metal strip 10 is a layer 13 forming.
  • the plastic 12 forms a protrusion 14 which extends above the metal strips 10.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
  • Sewing Machines And Sewing (AREA)

Abstract

There is a needle bar, in which a carrier bar 1 is provided with a groove 4 which is limited by a longer leg 3 and a shorter leg 2 and in which is inserted a carrier strip 5 of a needle strip 6, the said carrier strip 5 having a strip core, consisting of plastic 12 and receiving needles 7, and two metal bands 10 limiting these. It is desirable if, despite the metal bands assigned to the metal legs, the carrier strip is firmly seated permanently in the groove, without adhesion, by clamping. This is achieved in that the preliminary thickness of the carrier strip 5 is 8.5 - 11.5% larger than the groove width, in that there is provided between the needles 7 and each metal band 10 a layer 13 which is formed by the plastic and the thickness of which amounts to at least 4% of the preliminary thickness of the carrier strip 5, and in that the plastic 12 can be compressed elastically with a modulus of elasticity of 1,400 - 1,800 N/mm<2>. The compression in volume of the plastic is elastic, so that the carrier bar is permanently seated sufficiently firmly in the groove. <IMAGE>

Description

Die Erfindung betrifft einen Nadelstab für Kettenstrecken, bei dem ein metallener Trägerstab mit einer längsverlaufenden Nut versehen ist, die von einem längeren Schenkel und einem kürzeren Schenkel begrenzt ist, die jeweils eine Innenfläche bilden, und bei dem in der Nut eine Trägerleiste eines Nadelstreifens eingesetzt gehalten ist und die Trägerleiste einen aus einem in sich vollen Kunststoff bestehenden, eine Reihe von Nadeln aufnehmenden Leistenkern und zwei diesen begrenzende streifenartige Metallbänder aufweist, die mit Außenflächen den Innenflächen der Schenkel zugeordnet sind, wobei die Trägerleiste vor dem Einschieben in die Nut eine Vor-Dicke aufweist, die einer Nutweite der Trägerstab-Nut zugeordnet ist.The invention relates to a needle bar for chain sections, in which a metal support bar is provided with a longitudinal groove which is delimited by a longer leg and a shorter leg, each of which forms an inner surface, and in which a carrier strip of a pinstrip is inserted in the groove is and the support bar has a solid plastic, a row of needles receiving strip core and two strip-like metal strips which delimit them and which are assigned with outer surfaces to the inner surfaces of the legs, the support strip having a pre-thickness before being inserted into the groove has, which is assigned a groove width of the support rod groove.

Bei einem durch die Praxis bekannten Nadelstab dieser Art ist der in sich volle bzw. massive, d.h. nicht schaumige Kunststoff insofern starr, als er nicht in einem beachtlichen Umfang kompressibel ist. Die Vor-Dicke der Trägerleiste ist etwas kleiner als die Weite der Nut und die Trägerleiste wird bei der Montage relativ leicht in die Nut eingeschoben. Die Trägerleiste ist in der Nut durch Verklebung gehalten, wobei die Außenflächen der Metallbänder an den Innenflächen der Schenkel kleben. Die Verklebung der Metallbänder an den metallenen Schenkein erfolgt mittels eines Heißschmelzklebers oder eines Zweikomponentenklebers. Die Nadeln haben Berührung mit den Metallbändern. Das Verkleben der Trägerleiste in der Nut des Trägerstabes bereitet aufwendige Schwierigkeiten. Die Verklebung ist bisher nötig, weil die mit den Metallbändern versehene Trägerleiste unter den beim Kettenstrecken gegebenen Belastungen wegen des kürzeren Schenkels bei einer Klemmung durch bloßen Preßsitz in der Nut nicht ausreichend festsitzen würde, wobei in Hinblick auf Fertigungstoleranzen ein solcher Preßsitz aufwendig zu erreichen wäre.In the case of a needle bar of this type which is known in practice, the solid or solid, ie not foamy plastic is rigid in that it is not compressible to a considerable extent. The pre-thickness of the carrier strip is slightly smaller than the width of the groove and the carrier strip is relatively easily pushed into the groove during assembly. The carrier strip is held in the groove by gluing, the outer surfaces of the metal strips sticking to the inner surfaces of the legs. The metal strips are glued to the metal leg using a hot-melt adhesive or a two-component adhesive. The needles are in contact with the metal bands. Gluing the carrier strip in the groove of the carrier rod presents complex difficulties. The gluing has so far been necessary because the carrier strip provided with the metal strips is under the given chain stretching loads due to the shorter leg in a clamping by mere press fit in the groove would not be sufficiently stuck, such a press fit would be difficult to achieve with regard to manufacturing tolerances.

Eine Aufgabe der Erfindung ist es daher, einen Nadelstab der eingangs genannten Art zu schaffen, bei dem die Trägerleiste trotz der den metallenen Schenkein zugeordneten Metallbänder in der Nut verklebungsfrei durch Klemmung dauerhaft festsitzt. Der erfindungsgemäße Nadelstab ist, diese Aufgabe lösend, dadurch gekennzeichnet, daß die Vor-Dicke der Trägerleiste um 8,5 - 11,5 % größer ist als die Nutweite, daß zwischen den Nadeln und jedem Metallband eine von dem Kunststoff gebildete Schicht vorgesehen ist, deren Dicke mindestens 4 % der Vor-Dicke der Trägerleiste beträgt und daß der Kunststoff mit einem Elastizitätsmodul 1.400 - 1.800 N/mm² elastisch komprimierbar ist.It is therefore an object of the invention to provide a needle bar of the type mentioned at the outset, in which the carrier strip is permanently stuck in the groove without being clamped by clamping despite the metal strips associated with the metal legs. The needle bar according to the invention solves this problem, characterized in that the pre-thickness of the carrier strip is 8.5-11.5% greater than the groove width, that a layer formed by the plastic is provided between the needles and each metal band, whose thickness is at least 4% of the pre-thickness of the carrier strip and that the plastic is elastically compressible with a modulus of elasticity of 1,400 to 1,800 N / mm².

Bei dem erfindungsgemäßen Nadelstab wird der im wesentlichen blasenfreie, volle Kunststoff beim Eindrücken des Trägerstabes in die Nut volumenmäßig, d.h. in sich komprimiert. Die Volumenkompression des Kunststoffes ist elastisch, sodaß der Trägerstab in der Nut dauerhaft ausreichend fest sitzt. Die Metallbänder, die für den Trägerstab eine stabilisierende Wirkung haben, sind beibehalten. Eine Verklebung des Trägerstabes in der Nut ist vermieden. Der durch elastische Zusammendrückung gegebene feste Sitz ist trotz des kürzeren Schenkels, der von dem Trägerstab überragt ist, gegeben. Da die Nadeln den Abstand zwischen den beiden Metallbändern nicht vollständig überbrücken, ist zwischen jedem Metallband und der Nadel eine elastisch komprimierbare Kunststoffstrecke gegeben. Die Klemmkräfte des Trägerstabes in der Nut sind durch den elastischen Expansionsdruck des Kunststoffes gegeben. Eventuelle Fertigungstoleranzen sind einfach berücksichtigt. Die Schicht-Dicke ist nach oben hin durch die Nadeldicke und die Nutbreite bestimmt.In the needle bar according to the invention, the substantially bubble-free, full plastic is pressed in volume when the carrier bar is pressed into the groove, i.e. compressed in itself. The volume compression of the plastic is elastic, so that the support rod is permanently sufficiently tight in the groove. The metal strips, which have a stabilizing effect on the support rod, are retained. A sticking of the support rod in the groove is avoided. The tight fit given by elastic compression is given in spite of the shorter leg, which is towered over by the support rod. Since the needles do not completely bridge the distance between the two metal strips, there is an elastically compressible plastic stretch between each metal strip and the needle. The clamping forces of the support rod in the groove are given by the elastic expansion pressure of the plastic. Any manufacturing tolerances are simply taken into account. The layer thickness is determined upwards by the needle thickness and the groove width.

Besonders zweckmäßig und vorteilhaft ist es, wenn die Vor-Dicke 9 - 11 % größer ist als die Nutweite, wenn die Schicht-Dicke mindestens 5 % der Vor-Dicke beträgt und/oder wenn der Elastizitätsmodul 1.500 - 1.700 n/mm² beträgt. Diese Werte erweisen sich in der Praxis als besonders brauchbar.It is particularly expedient and advantageous if the pre-thickness is 9-11% greater than the groove width, if the layer thickness is at least 5% of the pre-thickness and / or if the elastic modulus is 1,500 - 1,700 n / mm². These values prove to be particularly useful in practice.

Der Kunststoff ist in der Regel niedermolekular und eine Mischung auf Polyamidbasis. In der Regel weist der verwendete Kunststoff folgende Eigenschaften auf: Es ist ein Biege-Elastizitätsmodul von etwa 2 x 10³ mm² vorgesehen und die Härte nach DIN 53456 liegt z.B. bei 80 N/mm². Nach dem Eindrücken in die Nut schwindet der Kunststoff nicht und läßt auch in der Elastizität nicht beachtlich nach. Der Kunststoff ist also nicht plastisch verformbar.The plastic is usually low molecular weight and a mixture based on polyamide. As a rule, the plastic used has the following properties: a flexural modulus of elasticity of about 2 x 10³ mm² is provided and the hardness according to DIN 53456 is e.g. at 80 N / mm². After being pressed into the groove, the plastic does not shrink and the elasticity does not decrease significantly either. The plastic is therefore not plastically deformable.

Die Nut und die Trägerleiste sind in der Regel Über die Länge in der Breite bzw. Dicke gleichbleibend. Der kürzere Schenkel ist, vom Nutgrund aus gemessen, in der Regel höchstens ein Drittel, z.B. ca. 40 % oder 52 %, so groß wie der längere Schenkel. Die Nadeln sind im Querschnitt z.B. rechteckig flach mit verrundeten Stirnseiten oder in der Regel rund, weil sie dann nach allen Seiten hin gleich steif sind. Die Metallbänder sind in der Regel Blechbänder aus Stahl und haben z.B. eine Dicke von 0,08 - 0,25 mm.The groove and the carrier strip are generally constant over the length in width or thickness. The shorter leg, measured from the bottom of the groove, is usually at most a third, e.g. approx. 40% or 52%, the size of the longer leg. The needles are e.g. rectangular flat with rounded faces or usually round, because then they are equally stiff on all sides. The metal strips are usually sheet steel strips and have e.g. a thickness of 0.08-0.25 mm.

Die Innenflächen der Schenkel und die Außenflächen der Metallbänder sind jeweils von Metall gebildet und sind in der Regel glatt, d.h. vorsprungsfrei und auch nicht aufgerauht. Trotz der Glätte der Innenflächen und Außenflächen sitzt die Trägerleiste dauerhaft fest. Besonders zweckmäßig und vorteilhaft ist es also, wenn die Metallbänder mit glatter Außenfläche jeweils an glatter Innenfläche einer der Schenkel anliegen.The inner surfaces of the legs and the outer surfaces of the metal strips are each formed from metal and are usually smooth, i.e. non-protruding and not roughened. In spite of the smoothness of the inner and outer surfaces, the carrier strip remains firmly in place. It is therefore particularly expedient and advantageous if the metal strips with a smooth outer surface each rest on a smooth inner surface of one of the legs.

Besonders zweckmäßig und vorteilhaft ist es auch, wenn die Metallbänder nach unten zum Nutgrund hin eine Verjüngung der Trägerleiste bildend im Endbereich aufeinander zu gebogen sind. Die als Einfädelhilfe dienende Verjüngung ist in einfacher Weise gestaltet, ohne das flächige Anliegen der Außenflächen an den Innenflächen allzu viel zu beeinträchtigen.It is also particularly expedient and advantageous if the metal strips are bent towards the bottom of the groove, forming a taper of the carrier strip, towards one another in the end region. The taper serving as a threading aid is designed in a simple manner without impairing the flat contact of the outer surfaces with the inner surfaces too much.

Besonders zweckmäßig und vorteilhaft ist es ebenso, wenn der Kunststoff um einen Überstand höher als die Metallbänder vorgesehen ist. Dies ergibt sich, wenn man gezielt darauf achtet, daß der Kunststoff mit Sicherheit überall blasen- bzw. lunkerfrei zwischen die beiden Blechbänder eingedrückt ist.It is also particularly expedient and advantageous if the plastic is provided a protrusion higher than the metal strips. This is the result of careful attention being paid to ensuring that the plastic is pressed between the two metal strips with no bubbles or voids.

Bei einer Ausführungsform der Erfindung sind folgende Abmessungen und Verhältnisse gegeben: die Nutweite beträgt ca. 2,20 mm und die Vor-Dicke der Trägerleiste hat ein Übermaß von ca. 10 % der Nutweite. Bei dem noch nicht zusammengedrückten Trägerstab befinden sich zwischen jedem Metallband und der Nadel eine Kunststoff-Schicht von ca. 0,10 mm, d.h. jede Schicht hat eine Dicke von ca. 4,5 % der Nutweite. Der kürzere Schenkel ist z.B. ca. 5 mm hoch, wobei die Höhe des gebogenen Endbereiches gleich oder kleiner 1 mm ist.In one embodiment of the invention, the following dimensions and ratios are given: the groove width is approximately 2.20 mm and the pre-thickness of the The carrier strip has an oversize of approx. 10% of the groove width. In the carrier rod, which has not yet been compressed, there is a plastic layer of approximately 0.10 mm between each metal band and the needle, ie each layer has a thickness of approximately 4.5% of the groove width. The shorter leg is, for example, approx. 5 mm high, the height of the curved end area being equal to or less than 1 mm.

In der Zeichnung ist eine bevorzugte Ausführungsform der Erfindung dargestellt und zeigt

Fig. 1
eine perspektifische Ansicht eines Trägerstabes eines Nadelstabes für Kettenstrecken,
Fig. 2
eine Seitenansicht mit Aufbruch eines Teiles eines Nadelstreifens für den Trägerstab gemäß Fig. 1, in einem gegenüber Fig. 1 vergrößerten Maßstab, und
Fig. 3
einen Schnitt des Nadelstabes gemäß Fig. 1 in einem gegenüber Fig. 1 und 2 vergrößerten Maßstab.
In the drawing, a preferred embodiment of the invention is shown and shows
Fig. 1
1 shows a perspective view of a carrier rod of a needle rod for chain sections,
Fig. 2
a side view with a portion of a pinstrip for the support rod according to FIG. 1, on an enlarged scale compared to FIG. 1, and
Fig. 3
a section of the needle bar according to FIG. 1 in an enlarged scale compared to FIGS. 1 and 2.

Der Nadelstab gemäß Zeichnung besitzt einen metallenen Trägerstab 1, der einen längsverlaufenden kürzeren Schenkel 2 und einen dazu parallel längs verlaufenden längeren Schenkel 3 bildet, die eine Nut 4 zwischen sich begrenzen. In die Nut 4 ist eine Trägerleiste 5 eines Nadelstreifens 6 eingeschoben. Die Trägerleiste 5 ist mit einer Reihe von zueinander parallelen und auf Abstand voneinander angeordneten Nadeln 7 bestückt. Die beiden Schenkel 2, 3 bilden jeweils eine glatte Innenfläche 8, an der jeweils eine glatte Außenfläche 9 der Trägerleiste 5 durchgehend anliegh. Die Höhe des kürzeren Schenkels 2 ist erheblich viel kleiner als die Höhe der Trägerleiste, welche den kürzeren Schenkel 2 der Höhe nach überragt und an dem längeren Schenkel 3 der Höhe nach durchgehend anliegt.The needle bar according to the drawing has a metal carrier bar 1, which forms a longitudinally extending shorter leg 2 and a parallel longitudinally extending longer leg 3, which delimit a groove 4 between them. A carrier strip 5 of a pinstrip 6 is inserted into the groove 4. The carrier strip 5 is equipped with a series of needles 7 which are parallel to one another and spaced apart from one another. The two legs 2, 3 each form a smooth inner surface 8 against which a smooth outer surface 9 of the carrier strip 5 is in continuous contact. The height of the shorter leg 2 is considerably much smaller than the height of the support bar, which extends above the shorter leg 2 in height and is in constant contact with the longer leg 3 in height.

Die Trägerleiste 5 weist an beiden Längsseiten je ein streifenartig breites Metallband 10 auf, das im unteren Endbereich 11 Verjüngung bildend gebogen ist. Die Nadeln 7 beginnen mit dem unteren Ende mit den Metallbändern 10. Der nicht von den Nadeln 7 eingenommene Raum zwischen den beiden Metallbändern 10 ist von Kunststoff 12 ausgefüllt, der sich nicht nur jeweils zwischen zwei benachbarten Nadeln 7, sondern auch zwischen jeder Nadel und jedem Metallband 10 eine Schicht 13 bildend befindet. Der Kunststoff 12 bildet einen Überstand 14, der die Metallbänder 10 nach oben überragt.The carrier strip 5 has a strip-like wide metal strip 10 on both longitudinal sides, which is bent to form a taper in the lower end region 11. The needles 7 begin at the lower end with the metal strips 10. The space between the two metal strips 10 which is not occupied by the needles 7 is filled with plastic 12, which is not only between two adjacent needles 7, but also between each needle and each metal strip 10 is a layer 13 forming. The plastic 12 forms a protrusion 14 which extends above the metal strips 10.

Claims (7)

Nadelstab für Kettenstrecken,
bei dem ein metallener Trägerstab mit einer längsverlaufenden Nut versehen ist, die von einem längeren Schenkel und einem kürzeren Schenkel begrenzt ist, die jeweils eine Innenfläche bilden, und
bei dem in der Nut eine Trägerleiste eines Nadelstreifens eingesetzt gehalten ist und die Trägerleiste einen aus einem in sich vollen Kunststoff bestehenden, eine Reihe von Nadeln aufnehmenden Leistenkern und zwei diesen begrenzende streifenartige Metallbänder aufweist, die mit Außenflächen den Innenflächen der Schenkel zugeordnet sind,
wobei
die Trägerleiste vor dem Einschieben in die Nut eine Vor-Dicke aufweist, die einer Nutweite der Trägerstab-Nut zugeordnet ist,
dadurch gekennzeichnet,
daß die Vor-Dicke der Trägeleiste (5) um 8,5 - 11,5 % größer ist als die Nutweite,
daß zwischen den Nadeln (7) und jedem Metallband (10) eine von dem Kunststoff gebildete Schicht (13) vorgesehen ist, deren Dicke mindestens 4 % der Vor-Dicke der Trägerleiste (5) beträgt und
daß der Kunststoff (12) mit einem Elastizitätsmodul 1.400 - 1.800 N/mm² elastisch komprimierbar ist.
Needle bar for chain sections,
in which a metal support rod is provided with a longitudinal groove which is delimited by a longer leg and a shorter leg, each of which forms an inner surface, and
in which a carrier strip of a pin strip is held inserted in the groove and the carrier strip has a strip core consisting of a completely plastic, accommodating a series of needles and two strip-like metal strips which delimit the latter and which are assigned outer surfaces to the inner surfaces of the legs,
in which
before being pushed into the groove, the support bar has a pre-thickness which is assigned to a groove width of the support rod groove,
characterized,
that the pre-thickness of the support strip (5) is 8.5 - 11.5% larger than the groove width,
that between the needles (7) and each metal strip (10) a layer (13) formed by the plastic is provided, the thickness of which is at least 4% of the pre-thickness of the carrier strip (5) and
that the plastic (12) with an elastic modulus 1,400 - 1,800 N / mm² is elastically compressible.
Nadelstab nach Anspruch 1, dadurch gekennzeichnet, daß die Vor-Dicke um 9 - 11 % größer ist als die Nutweite.Needle bar according to claim 1, characterized in that the pre-thickness is 9-11% greater than the groove width. Nadelstab nach Anpruch 1 oder 2, dadurch gekennzeichnet, daß die Schicht-Dicke von mindestens 5 % der Vor-Dicke beträgt.Needle bar according to claim 1 or 2, characterized in that the layer thickness is at least 5% of the pre-thickness. Nadelstab nach Anspruch 1, 2 oder 3, dadurch gekennzeichnet, daß der Elastizitätsmodul 1.500 - 1.700 N/mm² beträgt.Needle bar according to claim 1, 2 or 3, characterized in that the modulus of elasticity is 1,500 - 1,700 N / mm². Nadelstab nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Metallbänder (10) mit glatter Außenfläche (9) jeweils an glatter Innenfläche (8) eines der Schenke] (2, 3) anliegen.Needle bar according to one of the preceding claims, characterized in that the metal strips (10) with a smooth outer surface (9) each rest on a smooth inner surface (8) of one of the legs] (2, 3). Nadelstab nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Metallbänder (10) nach unten zum Nutgrund hin eine Verjüngung der Trägerleiste (5) bildend im Endbereich (11) aufeinander zugebogen sind.Needle bar according to one of the preceding claims, characterized in that the metal strips (10) are bent towards the bottom of the groove to form a taper of the carrier strip (5) in the end region (11) are. Nadelstab nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Kunststoff (12) um einen Überstand (14) höher als die Metallbänder (10) vorgesehen ist.Needle bar according to one of the preceding claims, characterized in that the plastic (12) is provided a protrusion (14) higher than the metal strips (10).
EP19930105449 1992-04-03 1993-04-01 Needle bar for chain drawing frame Revoked EP0564987B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4211075 1992-04-03
DE19924211075 DE4211075C1 (en) 1992-04-03 1992-04-03

Publications (2)

Publication Number Publication Date
EP0564987A1 true EP0564987A1 (en) 1993-10-13
EP0564987B1 EP0564987B1 (en) 1995-07-26

Family

ID=6455890

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19930105449 Revoked EP0564987B1 (en) 1992-04-03 1993-04-01 Needle bar for chain drawing frame

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EP (1) EP0564987B1 (en)
DE (1) DE4211075C1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2173991A1 (en) * 1972-02-05 1973-10-12 Mackie & Sons Ltd J
EP0029114A1 (en) * 1979-11-06 1981-05-27 Staedtler &amp; Uhl Arrangement for mounting a pinned bar in machines carrying pinned bars
EP0140204A2 (en) * 1983-10-06 1985-05-08 Drei-S-Werk Präzisionswerkzeuge GmbH &amp; Co. Fertigungs-KG Faller bar with pinned bars for textile machines

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2173991A1 (en) * 1972-02-05 1973-10-12 Mackie & Sons Ltd J
EP0029114A1 (en) * 1979-11-06 1981-05-27 Staedtler &amp; Uhl Arrangement for mounting a pinned bar in machines carrying pinned bars
EP0140204A2 (en) * 1983-10-06 1985-05-08 Drei-S-Werk Präzisionswerkzeuge GmbH &amp; Co. Fertigungs-KG Faller bar with pinned bars for textile machines

Also Published As

Publication number Publication date
DE4211075C1 (en) 1993-07-15
EP0564987B1 (en) 1995-07-26

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