EP3108049B1 - Radial braiding machine - Google Patents

Radial braiding machine Download PDF

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Publication number
EP3108049B1
EP3108049B1 EP15705307.5A EP15705307A EP3108049B1 EP 3108049 B1 EP3108049 B1 EP 3108049B1 EP 15705307 A EP15705307 A EP 15705307A EP 3108049 B1 EP3108049 B1 EP 3108049B1
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EP
European Patent Office
Prior art keywords
braiding
ring
warp
core
radial
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EP15705307.5A
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German (de)
French (fr)
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EP3108049A1 (en
Inventor
Gregor Baumgart
Karl-Josef Brockmanns
Jörg Wirtz
Martin Leifeld
Bernd Nefigmann
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Sgl Kuempers & Co KG GmbH
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Sgl Kuempers & Co KG GmbH
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    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04CBRAIDING OR MANUFACTURE OF LACE, INCLUDING BOBBIN-NET OR CARBONISED LACE; BRAIDING MACHINES; BRAID; LACE
    • D04C3/00Braiding or lacing machines
    • D04C3/02Braiding or lacing machines with spool carriers guided by track plates or by bobbin heads exclusively
    • D04C3/12Braiding or lacing machines with spool carriers guided by track plates or by bobbin heads exclusively with means for introducing core threads
    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04CBRAIDING OR MANUFACTURE OF LACE, INCLUDING BOBBIN-NET OR CARBONISED LACE; BRAIDING MACHINES; BRAID; LACE
    • D04C1/00Braid or lace, e.g. pillow-lace; Processes for the manufacture thereof
    • D04C1/06Braid or lace serving particular purposes
    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04CBRAIDING OR MANUFACTURE OF LACE, INCLUDING BOBBIN-NET OR CARBONISED LACE; BRAIDING MACHINES; BRAID; LACE
    • D04C3/00Braiding or lacing machines
    • D04C3/40Braiding or lacing machines for making tubular braids by circulating strand supplies around braiding centre at equal distances
    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04CBRAIDING OR MANUFACTURE OF LACE, INCLUDING BOBBIN-NET OR CARBONISED LACE; BRAIDING MACHINES; BRAID; LACE
    • D04C3/00Braiding or lacing machines
    • D04C3/48Auxiliary devices
    • DTEXTILES; PAPER
    • D10INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10BINDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2403/00Details of fabric structure established in the fabric forming process
    • D10B2403/02Cross-sectional features
    • D10B2403/024Fabric incorporating additional compounds
    • D10B2403/0241Fabric incorporating additional compounds enhancing mechanical properties
    • D10B2403/02411Fabric incorporating additional compounds enhancing mechanical properties with a single array of unbent yarn, e.g. unidirectional reinforcement fabrics

Definitions

  • the invention relates to a radial braiding machine according to the preamble of claim 1.
  • a generic Radialflechtmaschine is for example from the DE-OS 2,112,499 known and has a clapper mechanism, by means of the filaments and braiding threads to a braiding ring and passed through this. Furthermore, there must be a transport device for the transport of a core to be braided, which is also moved through the braiding ring.
  • the perpendicular to a core with a round cross-section braiding ring has a likewise round inner diameter.
  • EP 0 902 114 A2 is a radial braiding machine with Stehenfaden- and Flechtfadenzu enclosureen Klöppelgetriebe with a braiding ring, through which the Steht and braiding threads are passed, and at least one transport means for the transport of a core to be braided known.
  • the braiding ring is pivotable, so that the projection can have an oval cross section on a thread outlet plane spanned by the clapper mechanism. It is thereby achieved that improved braiding is also made possible by cores which are variable in their cross-section or curved.
  • the invention has for its object to provide a Radialflechtmaschine that allows the precise production of different braids.
  • a further influencing of the thread tension and storage position of the threads on the core to improve the lichen properties can be achieved on a braiding machine, in which the front of the braiding ring, through which the essential thread diversion occurs, partially from the spanned by the bobbin gear Thread exit plane or a parallel plane emerges. Due to the fact that the front side only partially but not completely, or different from the thread exit plane or the parallel plane protrudes counter to the transport direction of the braided core, specifically certain areas of braiding and standing threads are guided so that they sooner or later than other threads on come to the core to the plant or get another voltage.
  • a further adjustment and / or fine adjustment can be made by the Flechtring is arranged pivoted in the radial or round braiding, namely at least one of two mutually orthogonal pivot axes, so that the thread redirection at the mutual points of intersection of the braiding ring with one or both pivot axes different precedence.
  • the arrangement can be selected so that the thread redirection at all four points of intersection of the pivot axes with the braiding ring differs widely and projects at different heights.
  • the mean standard deviation we take into account the fact that the distance between two standing threads over the length of the flat braid is never 100% constant. Therefore, the distance between two standing threads is suitably indicated as an average value.
  • the mean standard deviation is therefore the standard deviation of the mean distances between the standing threads in the flat braid.
  • the influence of the filing of the threads on the core including the thread tension can be done by special training and / or assembly of the braiding ring, so that the braiding threads redirecting front (thread redirection) protrudes at different positions differently far above the thread exit plane or a plane parallel thereto.
  • the braiding properties can be positively influenced if the inner cross section of the braiding ring deviates just in the opposite direction from the circular shape, namely by its distance from the core at the position of the maximum core cross-sectional dimension smaller than is selected at the position of the minimum core cross-sectional dimension. It also has a positive effect if the thread redirection on the front side of the braiding ring continues to occur precisely at the position of the maximum cross-sectional dimension of the core than at the position of the minimum core cross-sectional dimension.
  • the braiding ring whose front side on either side of the maximum and / or minimum cross-sectional dimension of the core occurs differently or mounting a braided ring such that such a spatial positioning occurs, can positively influence the braid, especially when using braided cores whose longitudinal axis is not straight.
  • One way to achieve this influence on the mounting of the braiding ring is its tilted and / or pivoted mounting with respect to the thread exit plane.
  • Fig. 1 In the Fig. 1 simplified radial braiding machine has a bobbin 1, from the standing threads and braids 2.3 on the thread-deflecting front side 4, also called thread redirection, a braided ring 5 and thereafter passed through it.
  • a braiding core 6 is pushed through the braiding ring 5 in the transport direction 7 by means of a transport device 10.
  • the then intertwined threads 2,3 create a braid to the core 6, which in Fig. 1 only hinted at.
  • the bobbin 1 is annular and biases a thread exit plane E1.
  • the threads 2,3, come out of the interior of the Klöppelgetrieberings 1, which in Fig. 1 only schematically indicated.
  • Fig. 2 now shows a view from diagonally forward from position II in Fig. 1 and in it only a part of the bobbin gearing 1, but in much more detailed and perspective view.
  • the core 6 has a flat, rectangular cross section, which is arranged opposite to an elliptical in the illustrated embodiment, the inner cross section of the braiding ring fifth
  • Fig. 3 shows in detail the braiding ring 5 with its four holders 8, by means of which it is attached to the bobbin gearing (not shown here).
  • the braiding ring 5 has not only an oval inner diameter, but on its front side 4 also bulging sides 15, which consists of a spanned by the bobbin gear thread exit plane E1 (see also Fig. 1 ) parallel plane E2 emerges.
  • the upper and lower ends 25 of the front side 4 of the braiding ring 5, however, are aligned with the plane E2, so that the front side 4 of the braiding ring 5 only partially, but not everywhere emerges from the plane E2.
  • the thread-deflecting front side 4 of the braiding ring 5 thus spans an imaginary surface curved at least in certain regions, which is clearly distinct from a plane, straight surface of conventional braiding rings.
  • a special feature of the braiding machine according to the invention is that the braiding ring 5 as in Fig. 4 can be arranged to be pivoted at an angle ⁇ with respect to the planes E1 and E2. This makes it possible to exert an increased influence on the placement of the threads 2, 3, in particular when using braided cores 6, which have no straight longitudinal extent or longitudinal axis L but, for example, a curved one. For clarity, in Fig. 4 neither the core nor the threads represented.
  • the braiding ring 5 can rotate about mutually orthogonal pivot axes S1 and S2 (see Fig. 3 ) are mounted pivoted.
  • the tilted mounting in Fig. 4 in this case corresponds to one in which a distance A4 between the plane E1 and the intersection of the thread-deflecting front side 4 of the braiding ring 5 with the pivot axis S2 farthest out.
  • a distance A3 on the opposite side is slightly lower due to the pivoting, and the distances A1 and A2 (points of intersection with the pivot axis S1) are even smaller due to the special design of the thread-redirecting front side 4 of the braiding ring 5.
  • the braiding core 6 is schematically indicated in order to show how its geometry relative to the braiding ring 5 is to be designed preferably.
  • an already flat core 6 with a preferably rectangular diameter can be selected.
  • a design and arrangement of the braiding ring 5 to the braided core 6 has an advantageous effect on the uniformity of the braid to be obtained, in which the distances k1 between the maximum width B of the core 6 are smaller, preferably substantially smaller than the distances K2 between the core 6 at its maximum height H of the core 6 and the braided ring inner diameter at the respective position.
  • the braiding ring 5 is arranged so that its further advancing side regions 15 at the maximum cross-sectional dimensions of the core 6, here the width B, and its less prevalent upper and lower sides 25 at the positions of the minimum cross-sectional dimension, here the height H, of the core 6 can be found.
  • Fig. 5 shows schematically the flat braid produced on the braiding machine according to the invention. This can be obtained by flattening the braided tube produced or by cutting the tube on one or both sides.
  • Stehfäden 2 extend in the longitudinal direction L of the braid and braids 3 at an angle obliquely to the Stehfäden 2. Between the Stehfäden 2 are each distances G (also called Gap). Uniformity can be achieved in the braid produced so that the mean value of the distances G of the standing threads 2 is at most 5%.
  • Fig. 6 also shows only schematically a braid that is available in the prior art with a circular braided ring, which lies in a plane parallel to the plane E1.
  • Fig. 6 only braiding threads 3 are shown in one direction, whereas the oppositely oblique braiding threads are not shown here.
  • the standing threads 2 are parallel and aligned only in the perspective shown.
  • the braiding threads 3 do not have an ideally straight course, as indicated by a nominal position N, but from this nominal position N, that is the straight line which intersects the braiding thread 3 in the middle of the flat braid and tangentially to the braiding thread 3 runs, deviate by a curved course in the manner of an extended letter S.
  • the magnitude of the impact is measured at an impact angle ⁇ which is defined between the nominal position N and a straight line W which is laid through the points at which the braid thread 3 contacts the two outer standing threads 2.
  • the angle subtended between N and W is the impact angle ⁇ .
  • the uniformity is so high that the impact angle ⁇ is at most +/- 3 °.
  • the distances between the standing threads 2 from the center of the flat mesh to the outside significantly decrease.
  • the uniformity so high that the distances between the standing threads 2 have a mean standard deviation of only a maximum of 5%, preferably a maximum of 2%.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Braiding, Manufacturing Of Bobbin-Net Or Lace, And Manufacturing Of Nets By Knotting (AREA)

Description

Die Erfindung betrifft eine Radialflechtmaschine nach dem Oberbegriff des Anspruchs 1.The invention relates to a radial braiding machine according to the preamble of claim 1.

Eine gattungsgemäße Radialflechtmaschine ist beispielsweise aus der DE-OS 2 112 499 bekannt und verfügt über ein Klöppelgetriebe, mittels dem Stehfäden und Flechtfäden einem Flechtring zu- und durch diesen hindurchgeführt werden. Ferner muss eine Transporteinrichtung für den Transport eines zu umflechtenden Kerns vorhanden sein, der ebenfalls durch den Flechtring hindurchbewegt wird. Der senkrecht zu einem Kern mit rundem Querschnitt stehende Flechtring hat einen ebenfalls runden Innendurchmesser.A generic Radialflechtmaschine is for example from the DE-OS 2,112,499 known and has a clapper mechanism, by means of the filaments and braiding threads to a braiding ring and passed through this. Furthermore, there must be a transport device for the transport of a core to be braided, which is also moved through the braiding ring. The perpendicular to a core with a round cross-section braiding ring has a likewise round inner diameter.

In der Praxis konnten mit einer derartigen Radial- bzw. Rundflechtmaschine mit hohen Anforderungen an Gleichmäßigkeit und Fadenverlauf ausschließlich runde Flechtschläuche hergestellt werden. Bei der Herstellung von Geflechten für andere als kreisförmige Durchmesser verziehen sich jedoch die Fäden, und es treten Ungleichmäßigkeiten auf. Dies ist insbesondere bei auf derartigen Maschinen hergestellten Flachgeflechten der Fall, für die ein erstelltes röhrenförmiges Rundgeflecht lediglich flachgedrückt wird. Insbesondere an den Kanten des dadurch entstandenen Flachgeflechts kommt es zu unerwünschten Fadenverziehungen.In practice, only round braiding tubes could be produced with such a radial or round braiding machine with high requirements for uniformity and thread course. However, when making braids for other than circular diameters, the threads distort and unevenness occurs. This is especially true when manufactured on such machines Flat braided the case for which a created tubular round braid is merely flattened. In particular, at the edges of the resulting flat braid it comes to unwanted Fadenverziehung.

Auch durch die EP 0 902 114 A2 ist eine Radialflechtmaschine mit Stehfaden- und Flechtfadenzuführungen über Klöppelgetriebe mit einem Flechtring, durch den die Steh- und Flechtfäden hindurchgeführt sind, und zumindest einer Transporteinrichtung für den Transport eines zu umflechtenden Kerns bekannt. Der Flechtring ist schwenkbar, so dass die Projektion auf eine vom Klöppelgetriebe aufgespannte Fadenaustrittsebene einen ovalen Querschnitt aufweisen kann. Dadurch wird erreicht, dass eine verbesserte Beflechtung auch von in ihrem Querschnitt veränderlichen oder gekrümmten Kernen ermöglicht wird.Also by the EP 0 902 114 A2 is a radial braiding machine with Stehenfaden- and Flechtfadenzuführungen Klöppelgetriebe with a braiding ring, through which the Steht and braiding threads are passed, and at least one transport means for the transport of a core to be braided known. The braiding ring is pivotable, so that the projection can have an oval cross section on a thread outlet plane spanned by the clapper mechanism. It is thereby achieved that improved braiding is also made possible by cores which are variable in their cross-section or curved.

Des Weiteren beschreibt auch die DE 10 2010 047 193 A1 eine solche Radialflechtmaschine, bei der der Flechtring in seinem Innendurchmesser ständig dem aktuellen Durchmesser des Kerns angepasst wird.Furthermore, also describes the DE 10 2010 047 193 A1 Such a radial braiding machine, in which the braiding ring is constantly adapted in its inner diameter to the actual diameter of the core.

Der Erfindung liegt die Aufgabe zugrunde, eine Radialflechtmaschine anzugeben, die die präzise Herstellung verschiedener Geflechte ermöglicht.The invention has for its object to provide a Radialflechtmaschine that allows the precise production of different braids.

Diese Aufgabe wird erfindungsgemäß durch eine Radialflechtmaschine mit den Merkmalen des Anspruchs 1 gelöst. Dabei wird der Ablagepunkt der Flechtfäden auf dem zu umflechtenden Kern und deren Spannung beeinflusst, indem der Flechtring einen unrunden, das heißt von der Kreisform abweichenden Innenquerschnitt aufweist. Gute Ergebnisse lassen sich mit einem Flechtring erzielen, dessen Innenquerschnitt eine ovale bzw. elliptische Form aufweist.This object is achieved by a radial braiding machine with the features of claim 1. In this case, the storage point of the braiding threads on the core to be braided and their tension is influenced by the braided ring having a non-circular, that is deviating from the circular inner cross-section. Good results can be achieved with a braiding ring whose inner cross-section has an oval or elliptical shape.

Eine weitere Beeinflussung der Fadenspannung und Ablageposition der Fäden auf dem Kern zur Verbesserung der Flechteigenschaften lässt sich auf einer Flechtmaschine erzielen, bei der die Vorderseite des Flechtrings, durch die die wesentliche Fadenumleitung erfolgt, bereichsweise aus der vom Klöppelgetriebe aufgespannten Fadenaustrittsebene oder einer dazu parallelen Ebene hervortritt. Dadurch, dass die Vorderseite nur bereichsweise aber nicht vollständig, bzw. unterschiedlich weit aus der Fadenaustrittsebene oder der parallelen Ebene entgegen der Transportrichtung des Flechtkerns hervortritt, werden gezielt bestimmte Bereiche der Flecht- und Stehfäden so geführt, dass sie früher oder später als andere Fäden auf dem Kern zur Anlage kommen oder eine andere Spannung erhalten. Eine weitere Einstellung und/oder Feinjustierung kann erfolgen, indem der Flechtring in der Radial- bzw. Rundflechtmaschine verschwenkt angeordnet wird, und zwar um mindestens eine von zwei zueinander orthogonale Schwenkachsen, so dass die Fadenumleitung an den beiderseitigen Schnittpunkten des Flechtrings mit einer oder beiden Schwenkachsen unterschiedlich weit vortritt. Die Anordnung kann so gewählt werden, dass die Fadenumleitung an allen vier Schnittpunkten der Schwenkachsen mit dem Flechtring unterschiedlich weit vortritt bzw. unterschiedlich hoch vorspringt.A further influencing of the thread tension and storage position of the threads on the core to improve the lichen properties can be achieved on a braiding machine, in which the front of the braiding ring, through which the essential thread diversion occurs, partially from the spanned by the bobbin gear Thread exit plane or a parallel plane emerges. Due to the fact that the front side only partially but not completely, or different from the thread exit plane or the parallel plane protrudes counter to the transport direction of the braided core, specifically certain areas of braiding and standing threads are guided so that they sooner or later than other threads on come to the core to the plant or get another voltage. A further adjustment and / or fine adjustment can be made by the Flechtring is arranged pivoted in the radial or round braiding, namely at least one of two mutually orthogonal pivot axes, so that the thread redirection at the mutual points of intersection of the braiding ring with one or both pivot axes different precedence. The arrangement can be selected so that the thread redirection at all four points of intersection of the pivot axes with the braiding ring differs widely and projects at different heights.

Bei einem mit der erfindungsgemäßen Radialflechtmaschine hergestellten Flachgeflecht werden Flechtfehler bzw. Abweichungen vom idealen Flechtfadenverlauf, S-Schlag bzw. Z-Schlag genannt, verringert auf Schlagwinkel von maximal +/-Es können hierzu auch im Wesentlichen rechteckige Flechtkerne gewählt werden, die auch sehr flach sein können und somit schon der späteren Form des Flachgeflechts nahekommen. Die beim Stand der Technik unausweichlichen Spannungsunterschiede der Flechtfäden an den Außenkanten des Flachgeflechts werden hierbei vermieden bzw. minimiert. Bevorzugt wird dadurch ein Flachgeflecht erreicht, dessen Abstände zwischen den Stehfäden eine mittlere Standardabweichung von nur noch maximal 5%, weiter bevorzugt maximal 2% aufweisen. Mit der Angabe der mittleren Standardabweichung wir dem Umstand Rechnung getragen, dass der Abstand zwischen zwei Stehfäden über die Länge des Flachgeflechts nie zu 100% konstant verläuft. Der Abstand zweier Stehfäden wird deshalb geeigneterweise als ein Mittelwert angegeben. Die mittlere Standardabweichung ist also die Standardabweichung der mittleren Abstände der Stehfäden im Flachgeflecht. In a flat braid produced with the radial braiding machine according to the invention, braiding errors or deviations from the ideal course of the braiding thread, termed S-beat or Z-beat, are reduced to a maximum impact angle of +/- Es For this purpose, it is also possible to choose essentially rectangular braided cores, which can also be very flat and thus already approach the later form of the flat braid. The unavoidable differences in tension of the braiding threads at the outer edges of the flat braid in the prior art are avoided or minimized. Preferably, this achieves a flat braid whose distances between the standing threads have a mean standard deviation of only a maximum of 5%, more preferably a maximum of 2%. By specifying the mean standard deviation, we take into account the fact that the distance between two standing threads over the length of the flat braid is never 100% constant. Therefore, the distance between two standing threads is suitably indicated as an average value. The mean standard deviation is therefore the standard deviation of the mean distances between the standing threads in the flat braid.

Die Beeinflussung der Ablage der Fäden auf den Kern inklusive der Fadenspannung kann dabei durch spezielle Ausbildung und/oder Montage des Flechtrings erfolgen, so dass dessen die Flechtfäden umleitende Vorderseite (Fadenumleitung) an verschiedenen Positionen unterschiedlich weit über die Fadenaustrittsebene oder eine dazu parallele Ebene vorsteht.The influence of the filing of the threads on the core including the thread tension can be done by special training and / or assembly of the braiding ring, so that the braiding threads redirecting front (thread redirection) protrudes at different positions differently far above the thread exit plane or a plane parallel thereto.

Bei Verwendung eines unrunden Kerns mit unterschiedlichen Querschnittsmaßen maximaler Höhe und maximaler Breite lassen sich die Geflechteigenschaften positiv beeinflussen, wenn der Innenquerschnitt des Flechtrings gerade in umgekehrter Art von der Kreisform abweicht, nämlich indem sein Abstand vom Kern an der Position des maximalen Kern-Querschnittsmaßes kleiner als an der Position des minimalen Kern-Querschnittsmaßes gewählt wird. Ebenso wirkt sich positiv aus, wenn die Fadenumleitung auf der Vorderseite des Flechtrings gerade an der Position des maximalen Querschnittsmaßes des Kerns weiter vortritt als an der Position des minimalen Kern-Querschnittsmaßes.When using a non-circular core with different cross-sectional dimensions of maximum height and maximum width, the braiding properties can be positively influenced if the inner cross section of the braiding ring deviates just in the opposite direction from the circular shape, namely by its distance from the core at the position of the maximum core cross-sectional dimension smaller than is selected at the position of the minimum core cross-sectional dimension. It also has a positive effect if the thread redirection on the front side of the braiding ring continues to occur precisely at the position of the maximum cross-sectional dimension of the core than at the position of the minimum core cross-sectional dimension.

Der Flechtring, dessen Vorderseite beiderseits des maximalen und/oder minimalen Querschnittsmaßes des Kerns unterschiedlich weit vortritt oder eine Montage eines Flechtrings derart, dass eine solche räumliche Positionierung eintritt, kann das Geflecht positiv beeinflussen, insbesondere bei Verwendung von Flechtkernen, deren Längsachse nicht gerade ist. Eine Möglichkeit, diese Beeinflussung über die Montage des Flechtrings zu erzielen, ist dessen gekippte und/oder verschwenkte Montage gegenüber der Fadenaustrittsebene.The braiding ring, whose front side on either side of the maximum and / or minimum cross-sectional dimension of the core occurs differently or mounting a braided ring such that such a spatial positioning occurs, can positively influence the braid, especially when using braided cores whose longitudinal axis is not straight. One way to achieve this influence on the mounting of the braiding ring is its tilted and / or pivoted mounting with respect to the thread exit plane.

Weitere Vorteile und Einzelheiten ergeben sich aus den Unteransprüchen und in den Zeichnungen dargestellten Ausführungsbeispielen, die im Folgenden beschrieben werden; es zeigen:

Fig. 1
schematisch eine erfindungsgemäße Radialflechtmaschine,
Fig. 2
eine perspektivische Ansicht aus Richtung II auf den Gegenstand aus Fig. 1,
Fig. 3
den Flechtring aus Fig. 1 in perspektivischer Ansicht und zwei Seitenansichten,
Fig. 4
eine perspektivische Ansicht aus Richtung IV auf den Gegenstand aus Fig. 1,
Fig. 5
schematisch ein erfindungsgemäßes Flachgeflecht und
Fig. 6
schematisch eine Darstellung eines Schlagwinkels bei einem Geflecht.
Further advantages and details emerge from the subclaims and exemplary embodiments illustrated in the drawings, which are described below; show it:
Fig. 1
schematically a radial braiding machine according to the invention,
Fig. 2
a perspective view from the direction of II on the object Fig. 1 .
Fig. 3
the braid ring Fig. 1 in perspective view and two side views,
Fig. 4
a perspective view from the direction IV on the object Fig. 1 .
Fig. 5
schematically a flat braid according to the invention and
Fig. 6
schematically a representation of a beating angle in a braid.

Die in Fig. 1 vereinfacht dargestellte Radialflechtmaschine besitzt ein Klöppelgetriebe 1, aus dem Stehfäden und Flechtfäden 2,3 über die fadenumleitende Vorderseite 4, auch Fadenumleitung genannt, eines Flechtrings 5 und im Anschluss daran durch diesen hindurchgeführt werden. Zur Erstellung des Geflechts wird durch den Flechtring 5 ein zu umflechtender Kern 6 in Transportrichtung 7 mittels einer Transporteinrichtung 10 hindurchgeschoben. Dabei legen sich die dann verflochtenden Fäden 2,3 als Geflecht an den Kern 6 an, was in Fig. 1 nur angedeutet ist. Das Klöppelgetriebe 1 ist ringförmig und spannt eine Fadenaustrittsebene E1 auf. Die Fäden 2,3, treten aus dem Inneren des Klöppelgetrieberings 1 heraus, was in Fig. 1 nur schematisch angedeutet ist.In the Fig. 1 simplified radial braiding machine has a bobbin 1, from the standing threads and braids 2.3 on the thread-deflecting front side 4, also called thread redirection, a braided ring 5 and thereafter passed through it. To create the mesh, a braiding core 6 is pushed through the braiding ring 5 in the transport direction 7 by means of a transport device 10. In this case, the then intertwined threads 2,3 create a braid to the core 6, which in Fig. 1 only hinted at. The bobbin 1 is annular and biases a thread exit plane E1. The threads 2,3, come out of the interior of the Klöppelgetrieberings 1, which in Fig. 1 only schematically indicated.

Fig. 2 zeigt nun eine Ansicht von schräg vorne aus Position II in Fig. 1 und darin auch nur einen Teil des Klöppelgetriebes 1, dafür in sehr viel detaillierterer und perspektivischer Darstellung. Hier ist erkennbar, dass der Kern 6 einen flachen, rechteckigen Querschnitt hat, der entgegengesetzt angeordnet ist zu einem bei der dargestellten Ausführungsform elliptischen Innenquerschnitt des Flechtrings 5. Fig. 2 now shows a view from diagonally forward from position II in Fig. 1 and in it only a part of the bobbin gearing 1, but in much more detailed and perspective view. Here it can be seen that the core 6 has a flat, rectangular cross section, which is arranged opposite to an elliptical in the illustrated embodiment, the inner cross section of the braiding ring fifth

Fig. 3 zeigt im Detail den Flechtring 5 mit seinen vier Haltern 8, mittels denen er am Klöppelgetriebe (hier nicht dargestellt) befestigt ist. Der Flechtring 5 hat nicht nur einen ovalen Innendurchmesser, sondern an seiner Vorderseite 4 auch vorgewölbte Seiten 15, die aus einer zur vom Klöppelgetriebe aufgespannten Fadenaustrittsebene E1 (siehe auch Fig. 1) parallelen Ebene E2 hervortritt. Die oberen und unteren Enden 25 der Vorderseite 4 des Flechtrings 5 hingegen fluchten mit der Ebene E2, so dass die Vorderseite 4 des Flechtrings 5 nur bereichsweise, nicht jedoch überall aus der Ebene E2 hervortritt. Über diese Gestaltung lässt sich gezielt Einfluss nehmen auf die Ablage der Flecht- und Stehfäden 2,3 auf dem zu umflechtenden Kern 6. Die fadenumleitende Vorderseite 4 des Flechtrings 5 spannt so eine zumindest bereichsweise gewölbte imaginäre Fläche auf, die sich deutlich von einer ebenen, geraden Fläche herkömmlicher Flechtringe unterscheidet. Fig. 3 shows in detail the braiding ring 5 with its four holders 8, by means of which it is attached to the bobbin gearing (not shown here). The braiding ring 5 has not only an oval inner diameter, but on its front side 4 also bulging sides 15, which consists of a spanned by the bobbin gear thread exit plane E1 (see also Fig. 1 ) parallel plane E2 emerges. The upper and lower ends 25 of the front side 4 of the braiding ring 5, however, are aligned with the plane E2, so that the front side 4 of the braiding ring 5 only partially, but not everywhere emerges from the plane E2. By means of this design, it is possible to influence the placement of the braided and standing threads 2, 3 on the core 6 to be braided in a targeted manner. The thread-deflecting front side 4 of the braiding ring 5 thus spans an imaginary surface curved at least in certain regions, which is clearly distinct from a plane, straight surface of conventional braiding rings.

Eine Besonderheit der erfindungsgemäßen Flechtmaschine liegt darin, dass der Flechtring 5 wie in Fig. 4 dargestellt, um einen Winkel α gegenüber den Ebenen E1 und E2 verschwenkt angeordnet werden kann. Dadurch lässt sich erweitert Einfluss nehmen auf die Ablage der Fäden 2,3, insbesondere bei der Verwendung von Flechtkernen 6, die keine gerade Längserstreckung bzw. Längsachse L, sondern beispielsweise eine gekrümmte aufweisen. Aus Gründen der Übersichtlichkeit sind in Fig. 4 weder der Kern noch die Fäden dargestellt.A special feature of the braiding machine according to the invention is that the braiding ring 5 as in Fig. 4 can be arranged to be pivoted at an angle α with respect to the planes E1 and E2. This makes it possible to exert an increased influence on the placement of the threads 2, 3, in particular when using braided cores 6, which have no straight longitudinal extent or longitudinal axis L but, for example, a curved one. For clarity, in Fig. 4 neither the core nor the threads represented.

Bevorzugt kann der Flechtring 5 um zueinander orthogonale Schwenkachsen S1 und S2 (siehe Fig. 3) verschwenkt montiert werden. Die verschwenkte Montage in Fig. 4 entspricht dabei einer solchen, bei der ein Abstand A4 zwischen der Ebene E1 und dem Schnittpunkt der fadenumleitenden Vorderseite 4 des Flechtrings 5 mit der Schwenkachse S2 am weitesten hervortritt. Ein Abstand A3 an der gegenüberliegenden Seite ist durch die Verschwenkung etwas geringer, und die Abstände A1 und A2 (Schnittpunkte mit der Schwenkachse S1) fallen durch die spezielle Gestaltung der fadenumleitenden Vorderseite 4 des Flechtrings 5 noch geringer aus.Preferably, the braiding ring 5 can rotate about mutually orthogonal pivot axes S1 and S2 (see Fig. 3 ) are mounted pivoted. The tilted mounting in Fig. 4 in this case corresponds to one in which a distance A4 between the plane E1 and the intersection of the thread-deflecting front side 4 of the braiding ring 5 with the pivot axis S2 farthest out. A distance A3 on the opposite side is slightly lower due to the pivoting, and the distances A1 and A2 (points of intersection with the pivot axis S1) are even smaller due to the special design of the thread-redirecting front side 4 of the braiding ring 5.

In der perspektivischen Ansicht in Fig. 3 ist ferner schematisch der Flechtkern 6 angedeutet, um zu zeigen, wie dessen Geometrie gegenüber dem Flechtring 5 vorzugsweise auszugestalten ist. Zur Erzielung eines Flachgeflechts kann ein bereits flacher Kern 6 mit vorzugsweise rechteckigem Durchmesser gewählt werden. Anders als anzunehmen, hat dabei eine Gestaltung und Anordnung des Flechtrings 5 zum Flechtkern 6 eine vorteilhafte Auswirkung auf die Gleichmäßigkeit des zu erhaltenden Geflechts, bei der die Abstände k1 zwischen der maximalen Breite B des Kerns 6 kleiner, vorzugsweise wesentlich kleiner sind als die Abstände K2 zwischen dem Kern 6 bei seiner maximalen Höhe H des Kerns 6 und dem Flechtringinnendurchmesser an der jeweiligen Position. Ebenso wird der Flechtring 5 so angeordnet, dass seine weiter vortretenden Seitenbereiche 15 an den maximalen Querschnittsmaßen des Kerns 6, hier der Breite B, und seine weniger vortretenden Ober- und Unterseiten 25 an den Positionen des minimalen Querschnittsmaßes, hier der Höhe H, des Kerns 6 zu finden sind.In the perspective view in Fig. 3 Furthermore, the braiding core 6 is schematically indicated in order to show how its geometry relative to the braiding ring 5 is to be designed preferably. To achieve a flat braid, an already flat core 6 with a preferably rectangular diameter can be selected. Other than to assume, a design and arrangement of the braiding ring 5 to the braided core 6 has an advantageous effect on the uniformity of the braid to be obtained, in which the distances k1 between the maximum width B of the core 6 are smaller, preferably substantially smaller than the distances K2 between the core 6 at its maximum height H of the core 6 and the braided ring inner diameter at the respective position. Likewise, the braiding ring 5 is arranged so that its further advancing side regions 15 at the maximum cross-sectional dimensions of the core 6, here the width B, and its less prevalent upper and lower sides 25 at the positions of the minimum cross-sectional dimension, here the height H, of the core 6 can be found.

Fig. 5 zeigt schematisch das auf der erfindungsgemäßen Flechtmaschine erzeugte Flachgeflecht. Dieses kann durch Flachdrücken des erzeugten Flechtschlauches oder durch ein- oder beidseitiges Aufschneiden des Schlauches erhalten werden. Fig. 5 shows schematically the flat braid produced on the braiding machine according to the invention. This can be obtained by flattening the braided tube produced or by cutting the tube on one or both sides.

Die Breite, der Abstand und der Flechtwinkel der Fäden 2 und 3 sind hierbei nicht maßstäblich dargestellt. Dabei erstrecken sich Stehfäden 2 in Längsrichtung L des Geflechts und Flechtfäden 3 in einem Winkel schräg zu den Stehfäden 2. Zwischen den Stehfäden 2 befinden sich jeweils Abstände G (auch Gap genannt). Bei dem erzeugten Geflecht lässt sich eine Gleichmäßigkeit erzielen, so dass der Mittelwert der Abstände G der Stehfäden 2 maximal 5% beträgt.The width, the distance and the braiding angle of the threads 2 and 3 are not shown to scale. Stehfäden 2 extend in the longitudinal direction L of the braid and braids 3 at an angle obliquely to the Stehfäden 2. Between the Stehfäden 2 are each distances G (also called Gap). Uniformity can be achieved in the braid produced so that the mean value of the distances G of the standing threads 2 is at most 5%.

Fig. 6 zeigt ebenfalls nur schematisch ein Geflecht, das gemäß dem Stand der Technik mit einem kreisrunden Flechtring, der in einer Ebene parallel zur Ebene E1 liegt, erhältlich ist. In Fig. 6 sind nur Flechtfäden 3 in einer Richtung dargestellt, wohingegen die entgegengerichtet schrägen Flechtfäden hier nicht dargestellt sind. Die Stehfäden 2 verlaufen parallel und fluchten lediglich in der dargestellten Perspektive. Es ist einerseits zu sehen, dass die Flechtfäden 3 keinen ideal geraden Verlauf haben, wie als eine Nominallage N angedeutet, sondern von dieser Nominallage N, das ist die Gerade, die den Flechtfaden 3 querschnittsmäßig in der Mitte des Flachgeflechts schneidet und tangential zum Flechtfaden 3 verläuft, abweichen durch einen geschwungenen Verlauf nach Art eines gestreckten Buchstabens S. Dies wird als S-Schlag bezeichnet. Eine umgekehrte, hier nicht dargestellte Krümmung bezeichnet man als Z-Schlag. Die Größe des Schlags wird gemessen in einem Schlagwinkel β, der definiert wird zwischen der Nominallage N und einer Geraden W, die durch die Punkte gelegt wird, an denen der Flechtfaden 3 die beiden äußeren Stehfäden 2 berührt. Der zwischen N und W aufgespannte Winkel ist der Schlagwinkel β. Bei dem erfindungsgemäßen Geflecht ist die Gleichmäßigkeit so hoch, dass der Schlagwinkel β maximal +/- 3° beträgt. Andererseits ist in Fig. 6 zu sehen, dass die Abstände der Stehfäden 2 von der Mitte des Flachgeflechts nach außen hin deutlich abnehmen. Bei dem erfindungsgemäßen Geflecht ist die Gleichmäßigkeit so hoch, dass die Abstände zwischen den Stehfäden 2 eine mittlere Standardabweichung von nur noch maximal 5%, bevorzugt maximal 2 % aufweisen. Fig. 6 also shows only schematically a braid that is available in the prior art with a circular braided ring, which lies in a plane parallel to the plane E1. In Fig. 6 only braiding threads 3 are shown in one direction, whereas the oppositely oblique braiding threads are not shown here. The standing threads 2 are parallel and aligned only in the perspective shown. On the one hand, it can be seen that the braiding threads 3 do not have an ideally straight course, as indicated by a nominal position N, but from this nominal position N, that is the straight line which intersects the braiding thread 3 in the middle of the flat braid and tangentially to the braiding thread 3 runs, deviate by a curved course in the manner of an extended letter S. This is referred to as S-beat. An inverted, not shown here curvature is called Z-stroke. The magnitude of the impact is measured at an impact angle β which is defined between the nominal position N and a straight line W which is laid through the points at which the braid thread 3 contacts the two outer standing threads 2. The angle subtended between N and W is the impact angle β. In the braid according to the invention, the uniformity is so high that the impact angle β is at most +/- 3 °. On the other hand, in Fig. 6 to see that the distances between the standing threads 2 from the center of the flat mesh to the outside significantly decrease. In the braid according to the invention is the uniformity so high that the distances between the standing threads 2 have a mean standard deviation of only a maximum of 5%, preferably a maximum of 2%.

Über die erfindungsgemäße Ausgestaltung der Radialflechtmaschine und deren Flechtring 5 lässt sich ein Flachgeflecht erzeugen, das dadurch hohe Anforderungen an Gleichmäßigkeit erfüllt. Dabei sind unter Berücksichtigung einer jeweils gewählten Kernform 6 Einwirkungen auf die Ablageposition und den Ablagezeitpunkt der Fäden 2, 3 zur Optimierung des Geflechts möglich.About the inventive design of the radial braiding and their braiding ring 5 can produce a flat braid, which thereby meets high requirements for uniformity. In this case, taking into account a respective selected core shape 6 effects on the storage position and the storage time of the threads 2, 3 for optimizing the mesh possible.

Claims (4)

  1. Radial braiding machine comprising warp yarn and braiding yarn being fed by means of a bobbin mechanism (1), comprising a braiding ring (5) through which the warp (2) and braiding yarns (3) are guided, and at least one transport means (10) for transporting a core (6) to be braided, characterized in that the braiding ring (5) has an oval inner cross section and the front face (4) of the braiding ring (5), which face redirects the warp (2) and braiding yarns (3), has outwardly curved sides (15) which protrude in regions from the yarn outlet plane (E1) spanned by the bobbin mechanism (1) or from a plane (E2) parallel thereto counter to the transport direction (7).
  2. Radial braiding machine according to claim 1, characterized in that the braiding ring (5) is arranged in the braiding machine so as to be pivoted about at least one of two mutually orthogonal pivot axes (S1, S2) in such a way that the front face (4) which redirects the warp (2) and braiding yarns (3) protrudes to a varying extent at the intersections of the braiding ring (5) with the pivot axis S1 and/or the pivot axis S2.
  3. Radial braiding machine according to claim 2, characterized in that the front face (4) of the braiding ring (5) which redirects the warp (2) and braiding yarns (3) protrudes, with respect to the yarn outlet plane E1, by the distances A1 and A2 at the intersections with the pivot axis S1, and by the distances A3 and A4 at the intersections with the pivot axis S2, where A1<= A2<A3<A4.
  4. Radial braiding machine according to claim 1, characterized in that the inner contour of the braiding ring (5) spans two intersecting diametral axes (D1, D2), and the front face (4) which redirects the warp (2) and braiding yarns (3) protrudes further at the intersections with the diametral axis D2 than at the intersections with the diametral axis D1.
EP15705307.5A 2014-02-18 2015-02-18 Radial braiding machine Active EP3108049B1 (en)

Applications Claiming Priority (2)

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DE102014202970.8A DE102014202970A1 (en) 2014-02-18 2014-02-18 Radial braiding machine and flat braid
PCT/EP2015/053414 WO2015124626A1 (en) 2014-02-18 2015-02-18 Radial braiding machine and flat braid

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EP3108049A1 EP3108049A1 (en) 2016-12-28
EP3108049B1 true EP3108049B1 (en) 2019-04-10

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US (1) US20160355956A1 (en)
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DE (1) DE102014202970A1 (en)
ES (1) ES2723424T3 (en)
WO (1) WO2015124626A1 (en)

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DE102015210578A1 (en) * 2015-06-10 2016-12-15 Bayerische Motoren Werke Aktiengesellschaft braiding
DE102015210581A1 (en) * 2015-06-10 2016-12-15 Bayerische Motoren Werke Aktiengesellschaft braiding
US11718933B2 (en) 2021-08-18 2023-08-08 The Boeing Company Penta-axial braiding machine

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US3599529A (en) 1970-04-09 1971-08-17 North American Rockwell Defective strand detector means for braiding machines
EP0902114B1 (en) * 1997-09-09 2003-03-26 Murata Kikai Kabushiki Kaisha Formation stabilizing guide for braider
DE102010047193A1 (en) * 2010-09-30 2012-04-05 SGL Kümpers GmbH & Co.KG Circular braiding machine for processing coal and glass fiber roving for use in manufacture of semi-finished fiber, has control unit that adjusts inner diameter of braiding element corresponding to inner diameter of winded braiding core
US8261648B1 (en) * 2011-10-17 2012-09-11 Sequent Medical Inc. Braiding mechanism and methods of use

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EP3108049A1 (en) 2016-12-28
ES2723424T3 (en) 2019-08-27
DE102014202970A1 (en) 2015-08-20
US20160355956A1 (en) 2016-12-08
WO2015124626A1 (en) 2015-08-27

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