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EP0596245B1 - Knitting needle device and knitting needle belonging to it - Google Patents

Knitting needle device and knitting needle belonging to it Download PDF

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Publication number
EP0596245B1
EP0596245B1 EP93115600A EP93115600A EP0596245B1 EP 0596245 B1 EP0596245 B1 EP 0596245B1 EP 93115600 A EP93115600 A EP 93115600A EP 93115600 A EP93115600 A EP 93115600A EP 0596245 B1 EP0596245 B1 EP 0596245B1
Authority
EP
European Patent Office
Prior art keywords
knitting needle
knitting
bar
arrangement according
force
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
EP93115600A
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German (de)
French (fr)
Other versions
EP0596245A1 (en
Inventor
Josef Roth
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.)
Karl Mayer Textilmaschinenfabrik GmbH
Original Assignee
Karl Mayer Textilmaschinenfabrik GmbH
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Application filed by Karl Mayer Textilmaschinenfabrik GmbH filed Critical Karl Mayer Textilmaschinenfabrik GmbH
Publication of EP0596245A1 publication Critical patent/EP0596245A1/en
Application granted granted Critical
Publication of EP0596245B1 publication Critical patent/EP0596245B1/en
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    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04BKNITTING
    • D04B35/00Details of, or auxiliary devices incorporated in, knitting machines, not otherwise provided for
    • D04B35/02Knitting tools or instruments not provided for in group D04B15/00 or D04B27/00
    • D04B35/06Sliding-tongue needles
    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04BKNITTING
    • D04B27/00Details of, or auxiliary devices incorporated in, warp knitting machines, restricted to machines of this kind
    • D04B27/06Needle bars; Sinker bars
    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04BKNITTING
    • D04B35/00Details of, or auxiliary devices incorporated in, knitting machines, not otherwise provided for
    • D04B35/30Devices for controlling temperature of machine parts

Definitions

  • the invention relates to a knitting needle arrangement for warp knitting machines, in which the shafts of the knitting needles are arranged in parallel grooves of a needle bar, pressed against the bottom of the groove by means of a tensioning element and provided with a stop on the side facing the bottom of the groove, and to a knitting needle for use in a such a knitting needle arrangement.
  • the knitting needle has a straight shaft which is received by the groove and which has an angled end at the foot which engages in a transverse recess in the bar.
  • a cover plate which in turn is loaded by a clamping piece, covers the grooves and holds the needle shafts on the groove base.
  • a plastic film is placed between the cover plate and the needle shafts.
  • the invention is based on the object of specifying an improved knitting needle or knitting needle arrangement which enables the knitting needles to be fixed in a much more precise position.
  • the shaft carries a protrusion protruding from the groove, via which the clamping element introduces a clamping force at an angle other than 90 ° to the shaft axis into the knitting needles.
  • This clamping force results in a transverse force component transverse to the longitudinal axis of the shaft, through which the shaft is pressed against the base of the groove, and a longitudinal force component, which extends in the longitudinal direction of the shaft, through which the stop is held against a bar-resistant abutment.
  • the shear force component in question can therefore be small. A shift of the knitting needles due to deformation of the needle bar or a cover plate is therefore not to be feared. Rather, lighter and therefore cheaper needle bars can be used without impairing the positional accuracy of the knitting needles.
  • the clamping force is introduced at a defined point on the shank by the shank carrying a force introduction projection protruding from the groove.
  • a tensioning force can also act on such a projection, which only forms a small angle with the longitudinal axis of the shaft.
  • the force application angle can be less than 30 ° and in particular 5 to 15 °.
  • the removal of the unavoidable heat from the knitting needles is significantly improved, since the needle no longer has to be covered over a large part of its length by a plastic film or a cover plate, but is exposed to the free circulation of air.
  • the stop advantageously has a stop surface which has a component in the direction of the shaft axis and interacts with a corresponding, bar-resistant abutment surface.
  • the stop on the needle foot and the force introduction projection are advantageously arranged axially offset from the stop. This also results in a torque, which favors the securing of the position.
  • a clamping element with an outwardly convex cross section is recommended, which extends between support surfaces on the knitting needles and a bar-fixed support surface and can be expanded by means of a clamping screw.
  • Such a clamping element has a very low installation height and can be designed with a relatively small wall thickness.
  • the clamping screw can have a collar which interacts with the bar to determine the clamping force. If you screw in the screw up to the collar, a defined clamping force results. There is no risk of excessive forces being applied that could deform the needle bar.
  • the bar cross-section between the bar-fixed support surface and the rear of the groove can have an elevation. This results in a higher rigidity of the needle bar without requiring additional space.
  • the needle bar can be formed by a hollow profile having at least one cavity. This not only leads to a light and cheaper component, but also enables improved heat dissipation from the needle bar.
  • a knitting needle with a shaft for use in the knitting needle arrangement described above is characterized in that the shaft has a force introduction projection on one side and an oblique stop surface on the other side, which has a component in the direction of the shaft axis.
  • a knitting needle bar 1 is designed as a hollow profile 2, which has two cavities 4 and 5 separated by a thin wall 3.
  • Knitting needles 6 are inserted in parallel grooves 7 of the needle bar 1 in such a way that the shank 8 of the needle rests with the front 9 against the base of the groove and projects with the back 10 out of the groove.
  • the knitting needle 6 is a slide needle with a hook 11 and has a groove 12 into which a slide, not shown, engages to close the hook space.
  • the knitting needle 6 has a projection 13 on the needle foot, which is provided with an oblique stop surface 14 which cooperates with a corresponding abutment surface 15 on the needle bar 1.
  • This abutment surface 15 forms with the front 9 of the shaft 8 an acute angle which, when a longitudinal force is applied to the knitting needle 6, causes the front 9 of the shaft to bear against the base of the groove.
  • a force introduction projection 16 is attached approximately in the middle of the shaft 8 and is located outside the groove 7.
  • Each projection 16 has a support surface 17.
  • the needle bar has a support surface 18.
  • tensioning elements are distributed next to each other over the length of the needle bar.
  • Each tensioning element is tensioned by means of a screw 20, the thread 21 of which engages in a threaded bore 22 of the needle bar 1.
  • By tightening the tensioning element is brought from the starting position shown in dash-dotted lines to the fully extended end position. This is defined in that the screw 20 has a collar 23 which, when screwed down, bears against a surface 24 of the needle bar.
  • a force is transmitted to the knitting needle 6. This force is limited by the installation of the federal government 23 on the area 24.
  • the same reference numerals are used for identical parts and reference numerals increased by 100 for modified parts. It is essentially different that the needle bar 101 has a hollow profile, not a hollow profile, and that the cross-section of the needle bar increases the rigidity 101 has an elevation 25 between the groove 7 and the bar-fixed support surface 118. This also leads to a shortening of the collar 123 of the clamping screw 120.
  • FIG. 3 for the knitting needle 6, which is similar to the needles of FIGS. 1 and 2, it is illustrated how the tensioning force P exerted by the tensioning element 19 acts. It is at an angle ⁇ to the longitudinal axis 26 of the knitting needle 6.
  • the force acting in the needle is broken down into a longitudinal force component P L and a transverse force component P Q.
  • the longitudinal force component P L ensures that the oblique stop surface 14 comes to rest against the abutment surface 15 and the axial position of the needle 6 is thereby fixed in a form-fitting manner.
  • a wedge-shaped space 27 is formed between the stop face 14 and the front face 9, which ensures that the front face 9 is pressed against the groove base when the longitudinal force component P L occurs.
  • FIG. 4 shows a knitting needle 216 for a Raschel machine.
  • the rear side 210 of the shaft 208 lies against the base of the groove.
  • the projection 213 is on the rear side 210 and the force introduction projection 216 is on the Front 209 of the needle.
  • the clamping force P is again indicated by an arrow.
  • the force application protrusion 16 has the shape of an isosceles triangle
  • the force application protrusion 16a in FIG. 5 has the shape of a right triangle
  • the force application protrusion 16b in FIG. 6 has the shape of a square
  • the force application protrusion 16c in FIG 7 the shape of a semicircle.
  • the stop 13e and the force introduction projection 16e can also be arranged without axial displacement.
  • the tension force P acts essentially in the opposite direction. Accordingly, the support surface 17f or 17g is provided on the side of the force introduction projection 16f or 16g facing the hook. With these needles, the slope of the stop surfaces 14f and 14g on the stops 13f and 13g is opposite to the slope in the previous figures.

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

Description

Die Erfindung bezieht sich auf eine Wirknadelanordnung für Kettenwirkmaschinen, bei der die Schäfte der Wirknadeln in parallelen Nuten einer Nadelbarre angeordnet, mittels eines Spannelements gegen den Nutengrund gedrückt und auf der dem Nutengrund zugewandten Seite mit einem Anschlag versehen sind sowie auf eine Wirknadel zur Verwendung bei einer solchen Wirknadelanordnung.The invention relates to a knitting needle arrangement for warp knitting machines, in which the shafts of the knitting needles are arranged in parallel grooves of a needle bar, pressed against the bottom of the groove by means of a tensioning element and provided with a stop on the side facing the bottom of the groove, and to a knitting needle for use in a such a knitting needle arrangement.

Bei einer bekannten Wirknadelanordnung dieser Art (DE-GM 71 13 944) besitzt die Wirknadel einen geraden, von der Nut aufgenommenen Schaft, der am Fuß ein abgewinkeltes Ende besitzt, das in eine querlaufende Vertiefung der Barre greift. Eine Deckplatte, die ihrerseits durch ein Klemmstück belastet ist, überdeckt die Nuten und hält die Nadelschäfte am Nutengrund. Zwischen Deckplatte und Nadelschäfte ist eine Kunststoffolie gelegt.In a known knitting needle arrangement of this type (DE-GM 71 13 944) the knitting needle has a straight shaft which is received by the groove and which has an angled end at the foot which engages in a transverse recess in the bar. A cover plate, which in turn is loaded by a clamping piece, covers the grooves and holds the needle shafts on the groove base. A plastic film is placed between the cover plate and the needle shafts.

Bei dieser Konstruktion ist eine spielfreie Festlegung der Axiallage der Wirknadel nur möglich, wenn der Schaft mit großer Kraft gegen den Nutengrund gedrückt wird, so daß die Reibung eine axiale Verschiebung verhindert. Die zur Erzielung der kraftschlüssigen Verbindung aufzubringenden Spannkräfte sind so groß, daß sich Deckplatte und/oder Nadelbarre verformen, sofern sie nicht sehr stabil und damit groß und schwer ausgeführt werden. Die Verformung hat unter anderem zur Folge, daß die Hubbewegung der Legebarren vergrößert werden muß, daß die Gefahr einer Kollision zwischen Wirknadeln und Legenadeln besteht und - bei einer Schiebernadel - daß der Schieber an der Wirknadel aufläuft und infolge starker Reibung Wärme entsteht.With this construction, a play-free determination of the axial position of the knitting needle is only possible if the shaft is pressed against the groove base with great force, so that the friction prevents an axial displacement. The clamping forces to be applied to achieve the non-positive connection are so great that the cover plate and / or the needle bar deform, provided that they are not very stable and thus large and heavy. The deformation has the consequence, among other things, that the lifting movement of the laying bars has to be increased, that there is a risk of a collision between knitting needles and laying needles and - in the case of a pushing needle - that the slider runs against the knitting needle and heat is generated as a result of strong friction.

Ein anderer Nachteil der bekannten Konstruktion liegt darin, daß die Wärme, die im Betrieb im Bereich der Wirknadeln entsteht, nur einseitig über die Barre abgeführt werden kann, weil die Kunststoffolie einen Wärmeabfluß zur Deckplatte hin verhindert. Dies führt zu weiteren störenden Verformungen der Barre.Another disadvantage of the known construction is that the heat that arises in operation in the area of the knitting needles can only be dissipated on one side via the bar, because the plastic film prevents heat flow to the cover plate. This leads to further disruptive deformation of the bar.

Der Erfindung liegt die Aufgabe zugrunde, eine verbesserte Wirknadel bzw. Wirknadelanordnung anzugeben, die eine sehr viel genauere Lagefixierung der Wirknadeln ermöglicht.The invention is based on the object of specifying an improved knitting needle or knitting needle arrangement which enables the knitting needles to be fixed in a much more precise position.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß der Schaft einen aus der Nut herausragenden Krafteinleitungs-Vorsprung trägt, über den das Spannelement eine Spannkraft in einem von 90° abweichenden Winkel zur Schaftachse in die Wirknadeln einleitet.This object is achieved in that the shaft carries a protrusion protruding from the groove, via which the clamping element introduces a clamping force at an angle other than 90 ° to the shaft axis into the knitting needles.

Diese Spannkraft ergibt eine Querkraftkomponente quer zur Schaftlängsachse, durch die der Schaft gegen den Nutengrund gedrückt wird, und eine sich in Schaftlängsrichtung erstreckende Längskraftkomponente, durch die der Anschlag gegen ein barrenfestes Widerlager gehalten wird. Damit ergibt sich eine formschlüssige Festlegung der Axiallage der Wirknadel. Für diese Festlegung ist keine kraftschlüssige Verbindung mehr erforderlich. Die betreffende Querkraftkomponente kann daher klein sein. Eine Verlagerung der Wirknadeln durch Verformung der Nadelbarre oder einer Deckplatte ist somit nicht zu befürchten. Vielmehr können leichtere und daher billigere Nadelbarren ohne Beeinträchtigung der Lagegenauigkeit der Wirknadeln verwendet werden.This clamping force results in a transverse force component transverse to the longitudinal axis of the shaft, through which the shaft is pressed against the base of the groove, and a longitudinal force component, which extends in the longitudinal direction of the shaft, through which the stop is held against a bar-resistant abutment. This results in a positive determination of the axial position of the knitting needle. A non-positive connection is no longer required for this determination. The shear force component in question can therefore be small. A shift of the knitting needles due to deformation of the needle bar or a cover plate is therefore not to be feared. Rather, lighter and therefore cheaper needle bars can be used without impairing the positional accuracy of the knitting needles.

Die Spannkraft wird an einer definierten Stelle des Schafts eingeleitet, indem der Schaft einen aus der Nut herausragenden Krafteinleitungs-Vorsprung trägt. An einem solchen Vorsprung kann auch eine Spannkraft angreifen, die nur einen kleinen Winkel mit der Schaftlängsachse bildet.The clamping force is introduced at a defined point on the shank by the shank carrying a force introduction projection protruding from the groove. A tensioning force can also act on such a projection, which only forms a small angle with the longitudinal axis of the shaft.

Um die Querkraftkomponente tatsächlich möglichst klein zu halten, kann der Kraftangriffswinkel kleiner als 30° sein und insbesondere 5 bis 15° betragen.In order to actually keep the transverse force component as small as possible, the force application angle can be less than 30 ° and in particular 5 to 15 °.

Die Abfuhr der unvermeidbaren Wärme von den Wirknadeln ist wesentlich verbessert, da die Nadel nicht mehr über einen großen Teil ihrer Länge durch eine Kunststoffolie oder eine Deckplatte abgedeckt zu werden braucht, sondern der freien Luftzirkulation ausgesetzt ist.The removal of the unavoidable heat from the knitting needles is significantly improved, since the needle no longer has to be covered over a large part of its length by a plastic film or a cover plate, but is exposed to the free circulation of air.

Mit Vorteil weist der Anschlag eine Anschlagfläche auf, die eine Komponente in Richtung der Schaftachse besitzt und mit einer korrespondierenden, barrenfesten Widerlagerfläche zusammenwirkt. Mit Hilfe dieser schrägen Anschlagfläche ergibt sich eine Art Keilwirkung, durch welche die Längskraftkomponente ihrerseits dazu beiträgt, den Schaft gegen den Nutengrund zu drücken. Insgesamt ergibt sich mit einer geringen Spannkraft eine hohe Lagesicherheit.The stop advantageously has a stop surface which has a component in the direction of the shaft axis and interacts with a corresponding, bar-resistant abutment surface. With the help of this oblique stop surface, a kind of wedge effect results, by means of which the longitudinal force component in turn contributes to pushing the shaft against the base of the groove. Overall, with a low clamping force, there is a high level of positional security.

Mit Vorteil ist der Anschlag am Nadelfuß und der Krafteinleitungs-Vorsprung axial zum Anschlag versetzt angeordnet. Dies ergibt zusätzlich ein Drehmoment, das die Lagesicherung begünstigt.The stop on the needle foot and the force introduction projection are advantageously arranged axially offset from the stop. This also results in a torque, which favors the securing of the position.

Zur Aufbringung der Spannkraft empfiehlt sich ein Spannelement mit nach außen konvexem Querschnitt, das sich zwischen Stützflächen an den Wirknadeln und einer barrenfesten Stützfläche erstreckt und mittels einer Spannschraube spreizbar ist. Ein solches Spannelement hat eine sehr geringe Einbauhöhe und kann mit verhältnismäßig geringer Wandstärke ausgeführt werden.To apply the clamping force, a clamping element with an outwardly convex cross section is recommended, which extends between support surfaces on the knitting needles and a bar-fixed support surface and can be expanded by means of a clamping screw. Such a clamping element has a very low installation height and can be designed with a relatively small wall thickness.

Insbesondere kann die Spannschraube zur Festlegung der Spannkraft einen mit der Barre zusammenwirkenden Bund besitzen. Wenn man die Schraube bis zum Bund einschraubt, ergibt sich eine definierte Spannkraft. Es besteht keine Gefahr, daß übermäßige Kräfte aufgebracht werden, die zu einer Verformung der Nadelbarre führen könnten.In particular, the clamping screw can have a collar which interacts with the bar to determine the clamping force. If you screw in the screw up to the collar, a defined clamping force results. There is no risk of excessive forces being applied that could deform the needle bar.

In weiterer Ausgestaltung kann der Barrenquerschnitt zwischen barrenfester Stützfläche und Rückseite der Nut eine Erhebung aufweisen. Hierdurch ergibt sich eine höhere Steifigkeit der Nadelbarre, ohne daß zusätzlicher Platz benötigt wird.In a further embodiment, the bar cross-section between the bar-fixed support surface and the rear of the groove can have an elevation. This results in a higher rigidity of the needle bar without requiring additional space.

Da wesentlich geringere Kräfte als bisher auftreten, kann die Nadelbarre durch ein mindestens einen Hohlraum aufweisendes Hohlprofil gebildet sein. Dies führt nicht nur zu einem leichten und billigeren Bauteil, sondern ermöglicht auch eine verbesserte Wärmeabfuhr von der Nadelbarre.Since considerably lower forces than previously occur, the needle bar can be formed by a hollow profile having at least one cavity. This not only leads to a light and cheaper component, but also enables improved heat dissipation from the needle bar.

Eine Wirknadel mit Schaft zur Verwendung bei der zuvor beschriebenen Wirknadelanordnung ist dadurch gekennzeichnet, daß der Schaft auf der einen Seite einen Krafteinleitungs-Vorsprung und auf der anderen Seite eine schräge Anschlagfläche aufweist, die eine Komponente in Richtung der Schaftachse besitzt.A knitting needle with a shaft for use in the knitting needle arrangement described above is characterized in that the shaft has a force introduction projection on one side and an oblique stop surface on the other side, which has a component in the direction of the shaft axis.

Die Erfindung wird nachstehend anhand in der Zeichnung dargestellter bevorzugter Ausführungsbeispiele näher erläutert. Es zeigen:

Fig. 1
eine Seitenansicht, teilweise im Schnitt, einer Nadelbarre mit Wirknadel und ihrer Halterung gemäß der Erfindung,
Fig. 2
eine abgewandelte Form einer Wirknadelanordnung gemäß der Erfindung,
Fig. 3
eine Wirknadel ähnlich derjenigen der Ausführungsbeispiele der Fig. 1 und 2 und
Fig. 4 bis 11
weitere Ausführungsformen der Wirknadel.
The invention is explained in more detail below with reference to preferred exemplary embodiments illustrated in the drawing. Show it:
Fig. 1
2 shows a side view, partly in section, of a needle bar with a knitting needle and its holder according to the invention,
Fig. 2
a modified form of a knitting needle arrangement according to the invention,
Fig. 3
a knitting needle similar to that of the embodiments of FIGS. 1 and 2 and
4 to 11
further embodiments of the knitting needle.

Eine Wirknadelbarre 1 ist als Hohlprofil 2 ausgebildet, das zwei durch eine dünne Wand 3 getrennte Hohlräume 4 und 5 aufweist.A knitting needle bar 1 is designed as a hollow profile 2, which has two cavities 4 and 5 separated by a thin wall 3.

Wirknadeln 6 sind in parallelen Nuten 7 der Nadelbarre 1 derart eingelegt, daß der Schaft 8 der Nadel mit der Vorderseite 9 am Nutengrund anliegt und mit der Rückseite 10 aus der Nut vorsteht. Die Wirknadel 6 ist eine Schiebernadel mit einem Haken 11 und besitzt eine Nut 12, in die ein nicht veranschaulichter Schieber zum Verschließen des Hakenraums eingreift.Knitting needles 6 are inserted in parallel grooves 7 of the needle bar 1 in such a way that the shank 8 of the needle rests with the front 9 against the base of the groove and projects with the back 10 out of the groove. The knitting needle 6 is a slide needle with a hook 11 and has a groove 12 into which a slide, not shown, engages to close the hook space.

Die Wirknadel 6 besitzt am Nadelfuß einen Vorsprung 13, der mit einer schrägen Anschlagfläche 14 versehen ist, die mit einer korrespondierenden Widerlagerfläche 15 an der Nadelbarre 1 zusammenwirkt. Diese Widerlagerfläche 15 bildet mit der Vorderseite 9 des Schaftes 8 einen spitzen Winkel der beim Aufbringen einer Längskraft auf die Wirknadel 6 bewirkt, daß sich die Vorderseite 9 des Schafts gegen den Nutengrund anlegt.The knitting needle 6 has a projection 13 on the needle foot, which is provided with an oblique stop surface 14 which cooperates with a corresponding abutment surface 15 on the needle bar 1. This abutment surface 15 forms with the front 9 of the shaft 8 an acute angle which, when a longitudinal force is applied to the knitting needle 6, causes the front 9 of the shaft to bear against the base of the groove.

Ein Krafteinleitungs-Vorsprung 16 ist etwa in der Mitte des Schafts 8 angebracht und befindet sich außerhalb der Nut 7. Jeder Vorsprung 16 trägt eine Stützfläche 17. Die Nadelbarre weist eine Stützfläche 18 auf. Zwischen beiden erstreckt sich ein Spannelement 19, das aus einer Blechplatte besteht und einen nach außen konvex gewölbten Querschnitt besitzt.A force introduction projection 16 is attached approximately in the middle of the shaft 8 and is located outside the groove 7. Each projection 16 has a support surface 17. The needle bar has a support surface 18. A clamping element 19, which consists of a sheet metal plate and has an outwardly convex cross section, extends between the two.

Derartige Spannelemente sind nebeneinander über die Länge der Nadelbarre verteilt. Jedes Spannelement wird mittels einer Schraube 20, deren Gewinde 21 in eine Gewindebohrung 22 der Nadelbarre 1 greift, gespannt. Durch das Festziehen wird das Spannelement aus der strichpunktiert gezeichneten Anfangsstellung in die vollausgezogene Endstellung gebracht. Diese ist dadurch definiert, daß die Schraube 20 einen Bund 23 aufweist, der sich beim Festschrauben gegen eine Fläche 24 der Nadelbarre anlegt. Durch das Spreizen des Spannelements 19 wird eine Kraft auf die Wirknadel 6 übertragen. Diese Kraft ist durch die Anlage des Bundes 23 an der Fläche 24 begrenzt.Such tensioning elements are distributed next to each other over the length of the needle bar. Each tensioning element is tensioned by means of a screw 20, the thread 21 of which engages in a threaded bore 22 of the needle bar 1. By tightening the tensioning element is brought from the starting position shown in dash-dotted lines to the fully extended end position. This is defined in that the screw 20 has a collar 23 which, when screwed down, bears against a surface 24 of the needle bar. By spreading the tensioning element 19, a force is transmitted to the knitting needle 6. This force is limited by the installation of the federal government 23 on the area 24.

Bei der Ausführungsform nach Fig. 2 sind für identische Teile dieselben Bezugszeichen und für abgewandelte Teile um 100 erhöhte Bezugszeichen verwendet. Unterschiedlich ist es im wesentlichen, daß die Nadelbarre 101 kein Hohlprofil, sondern ein Vollprofil besitzt und daß zur Erhöhung der Steifigkeit der Querschnitt der Nadelbarre 101 zwischen der Nut 7 und der barrenfesten Stützfläche 118 eine Erhebung 25 aufweist. Dies führt auch zu einer Verkürzung des Bundes 123 der Spannschraube 120.In the embodiment according to FIG. 2, the same reference numerals are used for identical parts and reference numerals increased by 100 for modified parts. It is essentially different that the needle bar 101 has a hollow profile, not a hollow profile, and that the cross-section of the needle bar increases the rigidity 101 has an elevation 25 between the groove 7 and the bar-fixed support surface 118. This also leads to a shortening of the collar 123 of the clamping screw 120.

In Fig. 3 ist für die Wirknadel 6, die den Nadeln der Fig. 1 und 2 ähnlich ist, veranschaulicht, wie die vom Spannelement 19 ausgeübte Spannkraft P wirkt. Sie steht in einem Winkel α zur Längsachse 26 der Wirknadel 6. Die in der Nadel wirkende Kraft ist in eine Längskraftkomponente PL und in eine Querkraftkomponente PQ zerlegt. Die Längskraftkomponente PL sorgt dafür, daß die schräge Anschlagfläche 14 an der Widerlagerfläche 15 zur Anlage kommt und dadurch die axiale Lage der Nadel 6 formschlüssig festgelegt ist. Zwischen Anschlagfläche 14 und Vorderseite 9 wird ein keilförmiger Raum 27 gebildet, der dafür sorgt, daß beim Auftreten der Längskraftkomponente PL die Vorderseite 9 gegen den Nutengrund gedrückt wird. Da sich die Anschlagfläche 14 und die Stützfläche 17 auf einander gegenüberliegenden Seiten der Nadellängsachse 26 befinden, entsteht ein Drehmoment um einen etwa bei 28 liegenden Drehpunkt, das zusätzlich die Vorderseite 9 gegen den Nutengrund drückt. Die Querkraftkomponente PQ dient ebenfalls als Andrückkraft. Weil die Stützfläche 17 axial gegenüber der Anschlagfläche 14 versetzt ist, ergibt auch sie ein Drehmoment um den Drehpunkt 28, das die Andrückwirkung unterstützt. Wegen dieser Verhältnisse genügt eine relativ geringe Kraft P, um die Nadel 6 sicher in einer definierten Lage zu halten.In FIG. 3, for the knitting needle 6, which is similar to the needles of FIGS. 1 and 2, it is illustrated how the tensioning force P exerted by the tensioning element 19 acts. It is at an angle α to the longitudinal axis 26 of the knitting needle 6. The force acting in the needle is broken down into a longitudinal force component P L and a transverse force component P Q. The longitudinal force component P L ensures that the oblique stop surface 14 comes to rest against the abutment surface 15 and the axial position of the needle 6 is thereby fixed in a form-fitting manner. A wedge-shaped space 27 is formed between the stop face 14 and the front face 9, which ensures that the front face 9 is pressed against the groove base when the longitudinal force component P L occurs. Since the stop surface 14 and the support surface 17 are located on opposite sides of the longitudinal axis 26 of the needle, a torque arises about a pivot point approximately at 28, which additionally presses the front side 9 against the groove base. The lateral force component P Q also serves as a pressing force. Because the support surface 17 is axially offset from the stop surface 14, it also gives a torque about the pivot point 28, which supports the pressing action. Because of these conditions, a relatively small force P is sufficient to hold the needle 6 securely in a defined position.

Während sich die Fig. 1 bis 3 auf die Wirknadelanordnung eines Kettstuhls beziehen, zeigt Fig. 4 eine Wirknadel 216 für eine Raschelmaschine. Bei ihr liegt die Rückseite 210 des Schaftes 208 an dem Nutengrund an. Demzufolge befindet sich der Vorsprung 213 an der Rückseite 210 und der Krafteinleitungs-Vorsprung 216 an der Vorderseite 209 der Nadel. Die Spannkraft P ist wiederum durch einen Pfeil angedeutet.1 to 3 relate to the knitting needle arrangement of a warp chair, FIG. 4 shows a knitting needle 216 for a Raschel machine. With it, the rear side 210 of the shaft 208 lies against the base of the groove. As a result, the projection 213 is on the rear side 210 and the force introduction projection 216 is on the Front 209 of the needle. The clamping force P is again indicated by an arrow.

Die Fig. 5, 6 und 7 zeigen, daß die Form der Krafteinleitungs-Vorsprünge und damit auch der Verlauf der Stützfläche unterschiedlich sein kann. Während der Krafteinleitungs-Vorsprung 16 die Form eines gleichschenkligen Dreiecks hat, hat der Krafteinleitungs-Vorsprung 16a in Fig. 5 die Form eines rechtwinkligen Dreiecks, der Krafteinleitungs-Vorsprung 16b in Fig. 6 die Form eines Quadrats und der Krafteinleitungs-Vorsprung 16c in Fig. 7 die Form eines Halbkreises. In vielen Fällen empfiehlt es sich, die Stützfläche 17 etwa rechtwinklig zur Richtung der Kraft P verlaufen zu lassen.5, 6 and 7 show that the shape of the force introduction projections and thus also the course of the support surface can be different. While the force application protrusion 16 has the shape of an isosceles triangle, the force application protrusion 16a in FIG. 5 has the shape of a right triangle, the force application protrusion 16b in FIG. 6 has the shape of a square and the force application protrusion 16c in FIG 7 the shape of a semicircle. In many cases it is advisable to let the support surface 17 run approximately at right angles to the direction of the force P.

Bei der Wirknadel der Fig. 8 ist unter Beibehaltung des Anschlags 13 der Krafteinleitungs-Vorsprung 16d mit größerem axialem Abstand von diesem angeordnet, was zu einem größeren Drehmoment führt.In the knitting needle of FIG. 8, while maintaining the stop 13, the force introduction projection 16d is arranged at a greater axial distance therefrom, which leads to a greater torque.

Wie Fig. 9 zeigt, können Anschlag 13e und Krafteinleitungs-Vorsprung 16e auch ohne axiale Versetzung angeordnet werden.As FIG. 9 shows, the stop 13e and the force introduction projection 16e can also be arranged without axial displacement.

Bei den Nadeln der Fig. 10 und 11 wirkt die Spannkraft P im wesentlichen in entgegengesetzter Richtung. Demzufolge ist die Stützfläche 17f bzw. 17g auf der dem Haken zugewandten Seite des Krafteinleitungs-Vorsprunges 16f bzw. 16g vorgesehen. Bei diesen Nadeln verläuft die Schräge der Anschlagflächen 14f bzw. 14g an den Anschlägen 13f bzw. 13g entgegengesetzt zu der Schräge in den vorangehenden Figuren.10 and 11, the tension force P acts essentially in the opposite direction. Accordingly, the support surface 17f or 17g is provided on the side of the force introduction projection 16f or 16g facing the hook. With these needles, the slope of the stop surfaces 14f and 14g on the stops 13f and 13g is opposite to the slope in the previous figures.

Bei den Fig. 9 und 11 empfiehlt es sich, die Nut auch zwischen dem Anschlag 13e bzw. 13g und dem Fußende der Nadel fortzusetzen.9 and 11, it is advisable to continue the groove between the stop 13e and 13g and the foot end of the needle.

Claims (10)

  1. Knitting needle arrangement for warp knitting machines, in which the shanks (8) of the knitting needles (6) are arranged in parallel grooves (7) of a needle bar (1), are pressed against the groove bottom by means of a tension element (19) and are provided with a stop (13, 13e, 13f, 13g, 213) on the side facing the groove bottom, characterized in that the shank (8; 208) carries a force-introducing projection (16; 16a-g; 216) which projects from the groove (7) and via which the tension element (19) introduces a tensioning force (P) into the knitting needles (6; 206) at an angle (α) other than 90° relative to the shank axis (26).
  2. Knitting needle arrangement according to Claim 1, characterized in that the angle (α) is smaller than 30°.
  3. Knitting needle arrangement according to Claim 2, characterized in that the angle (α) is 5 to 15°.
  4. Knitting needle arrangement according to one of Claims 1 to 3, characterized in that the stop (13; 13e-g) has an oblique stop face (14; 14f-g) which possesses a component in the direction of the shank axis and which cooperates with a corresponding abutment face (15) fixed to the bar.
  5. Knitting needle arrangement according to Claim 4, characterized in that the stop (13) is arranged at the needle butt and the force-introducing projection (16; 16a-d; 16f) is arranged in a manner offset axially relative to the stop.
  6. Knitting needle arrangement according to one of Claims 1 to 5, characterized by a tension element (19) of outwardly convex cross-section, which extends between supporting faces (17) on the knitting needles (16; 206) and a supporting face (18; 118) fixed to the bar and which can be spread by means of a tension screw (20, 120).
  7. Knitting needle arrangement according to Claim 6, characterized in that the tension screw (20; 120) possesses, for fixing the tensioning force, a collar (23; 123) which cooperates with the bar (1).
  8. Knitting needle arrangement according to Claim 6 or 7, characterized in that the bar cross-section has an elevation (25) between the supporting face (17) fixed to the bar and the rear side of the groove (7).
  9. Knitting needle arrangement according to one of Claims 1 to 8, characterized in that the needle bar (1) is formed by a hollow profile having at least one cavity (4, 5).
  10. Knitting needle with shank (8) for use in a knitting needle arrangement according to one of Claims 1 to 9, characterized in that the shank (8) has, on one side, a force-introducing projection (16) and, on the other side, an oblique stop face (14) which possesses a component in the direction of the shank axis.
EP93115600A 1992-11-03 1993-09-28 Knitting needle device and knitting needle belonging to it Expired - Lifetime EP0596245B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4237084 1992-11-03
DE4237084A DE4237084C2 (en) 1992-11-03 1992-11-03 Knitting needle arrangement and associated knitting needle

Publications (2)

Publication Number Publication Date
EP0596245A1 EP0596245A1 (en) 1994-05-11
EP0596245B1 true EP0596245B1 (en) 1997-03-05

Family

ID=6471990

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93115600A Expired - Lifetime EP0596245B1 (en) 1992-11-03 1993-09-28 Knitting needle device and knitting needle belonging to it

Country Status (5)

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US (1) US5373710A (en)
EP (1) EP0596245B1 (en)
JP (1) JP2665447B2 (en)
KR (1) KR960006357B1 (en)
DE (2) DE4237084C2 (en)

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Publication number Priority date Publication date Assignee Title
EP1600543B1 (en) * 2004-05-27 2008-04-09 KARL MAYER TEXTILMASCHINENFABRIK GmbH Warp-knitting implement mounting bar
EP1813703B1 (en) * 2006-01-25 2009-05-13 Groz-Beckert KG Warp-knitting needle and needle bar
DE502007003001D1 (en) 2007-05-03 2010-04-15 Groz Beckert Kg Tool set and barre for a knitting machine
DE502007001850D1 (en) * 2007-05-03 2009-12-10 Groz Beckert Kg Knitting machine tool, especially for finest division
CN101985792A (en) * 2010-12-03 2011-03-16 常德纺织机械有限公司 Knitting needle for tricot machine
ES2548556T3 (en) * 2013-02-22 2015-10-19 Karl Mayer Textilmaschinenfabrik Gmbh Plastic bar for knitting tools
CN103266411A (en) * 2013-05-28 2013-08-28 马骏 Embedded type detachable movable main needle clamp and needle block
CN105603627A (en) * 2015-12-16 2016-05-25 无锡吉进环保科技有限公司 Detachable looseness-preventing warp knitting machine needle bed
CN107663710A (en) * 2017-11-15 2018-02-06 常德纺织机械有限公司 Carbon fiber needle-bar groove pin pressing plate
CN109267227B (en) * 2018-11-01 2020-02-14 江苏理工学院 Hollow knocking-over needle bed made of mixed fibre
EP3757267B1 (en) * 2020-11-06 2022-09-07 KARL MAYER STOLL R&D GmbH Warp knitting tool bar for a warpknitting machine
CN114182427B (en) * 2021-12-29 2023-03-31 福建航港针织品有限公司 High-speed warp knitting machine with double-sided fixed needle bed mechanism

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DE7113944U (en) * 1971-07-22 Mayer K Gmbh · Device for holding the needles of warp knitting machines
US601281A (en) * 1898-03-29 Island
US793556A (en) * 1904-10-15 1905-06-27 Tompkins Brothers Company Needle-cap for knitting-machines.
US834598A (en) * 1905-12-06 1906-10-30 Berthold Wiener Knitting-machine needle and holder therefor.
FR741233A (en) * 1931-07-27 1933-02-08
US1326555A (en) * 1917-11-30 1919-12-30 George A Wilkins Needle-mount.
US1916676A (en) * 1931-09-24 1933-07-04 Lange George Holder and needle for knitting machines
JPS416205Y1 (en) * 1965-04-13 1966-03-30
DE1760139B1 (en) * 1968-04-09 1970-07-16 Liebrandt Karl Holder of knitting tools
DE6811261U (en) * 1968-12-13 1969-04-10 Karl Liebrandt NEEDLE HOLDER FOR MOLDING MACHINES
JPS59132471A (en) * 1983-01-20 1984-07-30 Olympus Optical Co Ltd Cassette tape and cassette case
DE3316382A1 (en) * 1983-05-05 1984-11-15 Terrot Strickmaschinen GmbH, 7000 Stuttgart DEVICE FOR COMPENSATING DIFFERENT HEAT EXTENSIONS ON CIRCULAR KNITTING MACHINES
JPS6329755Y2 (en) * 1985-02-27 1988-08-09
DE3509214A1 (en) * 1985-03-14 1986-09-25 Liba Maschinenfabrik Gmbh, 8674 Naila NEEDLE BAR OF A CHAINING MACHINE
DE4111108C2 (en) * 1991-04-05 1993-10-07 Erbsloeh Julius & August Carrier designed as a closed hollow profile made of reinforced plastic

Also Published As

Publication number Publication date
KR940011685A (en) 1994-06-21
KR960006357B1 (en) 1996-05-15
US5373710A (en) 1994-12-20
JP2665447B2 (en) 1997-10-22
EP0596245A1 (en) 1994-05-11
DE59305595D1 (en) 1997-04-10
JPH06207355A (en) 1994-07-26
DE4237084A1 (en) 1994-05-05
DE4237084C2 (en) 1995-04-13

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