DE102014222144A1 - Method for stabilizing unidirectional layers before their edge trimming in the manufacture of fiber composite components - Google Patents
Method for stabilizing unidirectional layers before their edge trimming in the manufacture of fiber composite components Download PDFInfo
- Publication number
- DE102014222144A1 DE102014222144A1 DE102014222144.7A DE102014222144A DE102014222144A1 DE 102014222144 A1 DE102014222144 A1 DE 102014222144A1 DE 102014222144 A DE102014222144 A DE 102014222144A DE 102014222144 A1 DE102014222144 A1 DE 102014222144A1
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- Prior art keywords
- seam
- longitudinal direction
- fiber bundles
- unidirectional
- edge trimming
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- 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.)
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/02—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments
- D04H3/04—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments in rectilinear paths, e.g. crossing at right angles
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
- D04H3/10—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between yarns or filaments made mechanically
- D04H3/115—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between yarns or filaments made mechanically by applying or inserting filamentary binding elements
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Nonwoven Fabrics (AREA)
Abstract
Die Erfindung betrifft ein Verfahren zum Stabilisieren von unidirektionalen Gelegen vor deren Randbeschnitt bei der Herstellung von Faserverbundbauteilen, wobei die unidirektionalen Gelege sich in einer Längsrichtung erstreckende Faserbündel und mehrere in einer Querrichtung beabstandete, die Faserbündel fixierende Wirkfäden umfassen, wobei jeweils zwischen den Wirkfäden eine zusätzliche Naht in Längsrichtung vorgesehen wird, mit der die Faserbündel zusätzlich zu den Wirkfäden fixiert werden.The invention relates to a method for stabilizing unidirectional layers prior to edge trimming thereof in the manufacture of fiber composite components, the unidirectional scrims comprising fiber bundles extending in a longitudinal direction and a plurality of warp yarns spaced apart in a transverse direction, each having an additional seam between the warp yarns is provided in the longitudinal direction, with which the fiber bundles are fixed in addition to the knitting threads.
Description
Die Erfindung betrifft ein Verfahren zum Stabilisieren von unidirektionalen Gelegen vor deren Randbeschnitt bei der Herstellung von Faserverbundbauteilen, wobei die unidirektionalen Gelege sich in einer Längsrichtung erstreckende Faserbündel und mehrere in einer Querrichtung beabstandete, die Faserbündel fixierende Wirkfäden umfassen. Ferner betrifft die Erfindung das mit dem Verfahren hergestellte Gelege.The invention relates to a method for stabilizing unidirectional layers prior to edge trimming thereof in the manufacture of fiber composite components, the unidirectional scrims comprising fiber bundles extending in a longitudinal direction and a plurality of cross-directionally spaced, fiber bundle-fixing knitting yarns. Furthermore, the invention relates to the fabric produced by the method.
Beim Längsbeschnitt von unidirektionalen Gelegen für Faserverbundwerkstoffe entlang deren Verstärkungsfaserrichtung ist problematisch, dass durch den Beschnitt beziehungsweise Randbeschnitt die die Faserbündel fixierenden Wirkfäden mit durchtrennt und dabei die äußersten Faserbündel freigelegt werden, so dass die freiliegenden Faserbündel in der nachfolgenden Handhabung zur Fertigung der Faserverbundteile vom Gelege abfallen bzw. aus dem Gelege herausfallen können. Dies führt dazu, dass insbesondere bei im Bauteil liegende Lagenkanten nicht genau genug im Werkzeug abgelegt werden können.In the longitudinal trimming of unidirectional layers for fiber composite materials along their reinforcing fiber direction is problematic that cut through the trimming or edge trimming the fiber bundle fixing knitting threads while the outermost fiber bundles are exposed so that the exposed fiber bundles fall off in the subsequent handling for the production of fiber composite parts from the scrim or fall out of the clutch. This leads to the fact that not exactly enough can be stored in the tool especially for lying in the component position edges.
Der Randbeschnitt der Gelege erfolgt ebenfalls in Längsrichtung. Sobald dabei die Wirkfäden einmal durchtrennt sind, löst sich das Gelege immer weiter auf, da herkömmlicherweise kein Mittel zur Beschränkung der Auftrennung vorgesehen ist. Die Handhabung wird somit aufwendiger und erfordert ein Übermaß an Sorgfalt.The edge trim of the scrim also takes place in the longitudinal direction. As soon as the knitting threads are severed once, the scrim continues to dissolve, since conventionally no means for limiting the separation is provided. The handling is thus more complex and requires an excessive amount of care.
Der Erfindung liegt deshalb die Aufgabe zugrunde, ein Verfahren bereit zu stellen, mit dem die unidirektionalen Gelege stabilisiert werden können, so dass die am Rand liegenden Faserbündel nach einem Randbeschnitt nicht herausfallen. Ferner ist Aufgabe der Erfindung, ein entsprechendes Gelege bereit zu stellen.The invention is therefore based on the object of providing a method with which the unidirectional scrims can be stabilized so that the fiber bundles lying on the edge do not fall out after edge trimming. It is another object of the invention to provide a corresponding clutch.
Diese Aufgabe wird durch die Merkmalskombinationen der Ansprüche 1 und 8 gelöst.This object is achieved by the combination of features of
Erfindungsgemäß wird ein Verfahren zum Stabilisieren von unidirektionalen Gelegen vor deren Randbeschnitt bei der Herstellung von Faserverbundbauteilen vorgeschlagen, wobei die unidirektionalen Gelege sich in einer Längsrichtung erstreckende Faserbündel und mehrere in einer Querrichtung beabstandete, die Faserbündel fixierende Wirkfäden umfassen, und jeweils zwischen den Wirkfäden eine Naht in Längsrichtung vorgesehen wird, mit der die Faserbündel zusätzlich zu den Wirkfäden fixiert werden.According to the invention, a method is proposed for stabilizing unidirectional layers before their edge trimming in the production of fiber composite components, wherein the unidirectional scrims comprise longitudinally extending fiber bundles and a plurality of crosswise spaced, the fiber bundle fixing knitting threads, and in each case between the knitting threads a seam in Provided longitudinal direction, with which the fiber bundles are fixed in addition to the knitting threads.
Das Einbringen jeweils einer Naht in Längsrichtung zwischen den Wirkfäden fixiert die Faserbündel, so dass ein in Längsrichtung durchgeführter Trennschnitt durch das unidirektionale Gelege durchgeführt werden kann, ohne dass es zum Auftrennen des Geleges kommt. Die bisher nach dem Trennschnitt freiliegenden unfixierten Faserbündel sind durch die Naht jeweils fest an dem Gelege verbunden. Dies führt zu einer lokalen Stabilisierung der Faserbündel und mithin des gesamten Geleges.The introduction of a respective seam in the longitudinal direction between the knitting threads fixes the fiber bundles, so that a separating cut carried out in the longitudinal direction can be carried out through the unidirectional scrim, without the web being separated. The previously uncovered after the separation cut unfixed fiber bundles are each connected by the seam firmly on the scrim. This leads to a local stabilization of the fiber bundles and thus the entire Geleges.
In einer ebenfalls vorteilhaften Ausführung wird die Naht zur verbesserten Fixierung als eine Doppelnaht ausgeführt.In a likewise advantageous embodiment, the seam is executed for improved fixation as a double seam.
Auch ist als Lösung zur Einbringung der Naht bzw. der Nähte günstig, über die Breite des Geleges in Querrichtung einen oder mehrere Nähköpfe vorzusehen, mit dem bzw. denen ein oder mehrere Bindungsfäden in das Gelege eingenäht werden. Je nach Zuschnitt des Geleges ist die Anzahl der Nähte der Anzahl der Schnittlinien anzupassen. Als Material für die Bindungsfäden ist Polyester vorteilhaft.Also, as a solution for introducing the seam or seams, it is favorable to provide one or more sewing heads over the width of the fabric in the transverse direction, with which one or more binding threads are sewn into the fabric. Depending on the cut of the fabric, the number of seams must be adjusted to the number of cut lines. As a material for the binding threads polyester is advantageous.
In einer alternativen Ausführungsform ist vorgesehen, dass das Gelege einen global aufgebrachten Binder aufweist und die zusätzlichen) Naht bzw. Nähte durch eine Aufschmelzung des Binders entlang der Längsrichtung des Geleges erfolgt, wobei die Faserbündel in Längsrichtung mittels dem aufgeschmolzenen Binder fixiert werden. Die Aufschmelzung kann beispielsweise mittels heißer Rollen erfolgen, die über das Gelege geführt werden.In an alternative embodiment, it is provided that the scrim has a globally applied binder and the additional seam or seams take place by melting the binder along the longitudinal direction of the scrim, wherein the fiber bundles are fixed in the longitudinal direction by means of the melted binder. The melting can be done for example by means of hot rollers, which are guided over the scrim.
Erfindungsgemäß erfolgt das Einbringen der Naht bzw. Nähte unmittelbar vor dem Randbeschnitt des Geleges, so dass die übrigen Herstellungsschritte unbeeinflusst bleiben. Dabei kann beispielsweise das Gelege als Rollenware von einer Walze einer Wirkmaschine zugeführt, bei der zunächst die Naht bzw. Nähte mittels Nähköpfen eingebracht und anschließend in derselben Maschine mittels Schneidköpfen geschnitten werden. Die Schnittlinien verlaufen möglichst unmittelbar angrenzend zu den Nahtlinien.According to the introduction of the seam or seams takes place immediately before the edge trimming of the fabric, so that the remaining manufacturing steps remain unaffected. In this case, for example, the scrim may be supplied as a roll of a roll of a knitting machine, in which initially the seam or seams are introduced by means of sewing heads and then cut in the same machine by means of cutting heads. The cut lines are as close as possible to the seam lines.
Ebenfalls Teil der Erfindung ist das unidirektionales Gelege mit sich in einer Längsrichtung erstreckenden Faserbündeln und mehreren in einer Querrichtung beabstandeten, die Faserbündel fixierenden Wirkfäden, wobei jeweils zwischen den Wirkfäden eine Naht in Längsrichtung vorgesehen ist, mit der die Faserbündel fixiert sind.Also part of the invention is the unidirectional scrim with longitudinally extending fiber bundles and a plurality of spaced apart in a transverse direction, the fiber bundles fixing knitting threads, each between the knitting threads a seam is provided in the longitudinal direction, with which the fiber bundles are fixed.
Andere vorteilhafte Weiterbildungen der Erfindung sind in den Unteransprüchen gekennzeichnet bzw. werden nachstehend zusammen mit der Beschreibung der bevorzugten Ausführung der Erfindung anhand der Figur näher dargestellt. Es zeigt:Other advantageous developments of the invention are characterized in the subclaims or will be described in more detail below together with the description of the preferred embodiment of the invention with reference to FIG. It shows:
In
Die Erfindung beschränkt sich in ihrer Ausführung nicht auf die vorstehend angegebenen bevorzugten Ausführungsbeispiele. Vielmehr ist eine Anzahl von Varianten denkbar, welche von der dargestellten Lösung auch bei grundsätzlich anders gearteten Ausführungen Gebrauch macht. Beispielsweise können auch andere Materialen für die Bindungsfäden verwendet werden.The invention is not limited in its execution to the above-mentioned preferred embodiments. Rather, a number of variants is conceivable, which makes use of the illustrated solution even with fundamentally different types of use. For example, other materials for the binding threads can be used.
Claims (8)
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DE102014222144.7A DE102014222144A1 (en) | 2014-10-30 | 2014-10-30 | Method for stabilizing unidirectional layers before their edge trimming in the manufacture of fiber composite components |
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DE102014222144.7A DE102014222144A1 (en) | 2014-10-30 | 2014-10-30 | Method for stabilizing unidirectional layers before their edge trimming in the manufacture of fiber composite components |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019101975A1 (en) * | 2017-11-24 | 2019-05-31 | Saertex Gmbh & Co. Kg | Unidirectional laid nonwoven and use thereof |
RU2777410C2 (en) * | 2017-11-24 | 2022-08-03 | ЗАЕРТЕКС ГМБХ унд КО. КГ | Unidirectional straight fabric and its use |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19952443A1 (en) * | 1999-10-30 | 2001-05-03 | Inst Verbundwerkstoffe Gmbh | Process for the production of flat, dimensionally accurate and non-fraying semi-finished fiber products for the production of fiber-plastic composite components |
DE10334343A1 (en) * | 2003-07-29 | 2005-02-24 | Mtu Aero Engines Gmbh | Process to make composite tooling form strengthened by glass fibre and/or carbon fibre and/or aramide fibres |
DE102007032904B3 (en) * | 2007-07-14 | 2008-11-27 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Method for structural fixing of textile materials for use in high speed fiber composite components with and without thermoplastic component, involves fixing of cutting part contours, which are determined by suitable simulation software |
DE102007025556A1 (en) * | 2007-05-31 | 2008-12-11 | Eurocopter Deutschland Gmbh | Process for the production of components from fiber reinforced plastics |
WO2012104085A1 (en) * | 2011-02-04 | 2012-08-09 | Latecoere | Process for producing an elementary preform formed of a stack of reinforcing layers of fibrous structure |
US8246882B2 (en) * | 2003-05-02 | 2012-08-21 | The Boeing Company | Methods and preforms for forming composite members with interlayers formed of nonwoven, continuous materials |
DE102011109231A1 (en) * | 2011-08-03 | 2013-02-07 | Rheinisch-Westfälische Technische Hochschule Aachen | Reinforcing semi-finished product for organic sheets and process for its preparation |
-
2014
- 2014-10-30 DE DE102014222144.7A patent/DE102014222144A1/en active Pending
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19952443A1 (en) * | 1999-10-30 | 2001-05-03 | Inst Verbundwerkstoffe Gmbh | Process for the production of flat, dimensionally accurate and non-fraying semi-finished fiber products for the production of fiber-plastic composite components |
US8246882B2 (en) * | 2003-05-02 | 2012-08-21 | The Boeing Company | Methods and preforms for forming composite members with interlayers formed of nonwoven, continuous materials |
DE10334343A1 (en) * | 2003-07-29 | 2005-02-24 | Mtu Aero Engines Gmbh | Process to make composite tooling form strengthened by glass fibre and/or carbon fibre and/or aramide fibres |
DE102007025556A1 (en) * | 2007-05-31 | 2008-12-11 | Eurocopter Deutschland Gmbh | Process for the production of components from fiber reinforced plastics |
DE102007032904B3 (en) * | 2007-07-14 | 2008-11-27 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Method for structural fixing of textile materials for use in high speed fiber composite components with and without thermoplastic component, involves fixing of cutting part contours, which are determined by suitable simulation software |
WO2012104085A1 (en) * | 2011-02-04 | 2012-08-09 | Latecoere | Process for producing an elementary preform formed of a stack of reinforcing layers of fibrous structure |
DE102011109231A1 (en) * | 2011-08-03 | 2013-02-07 | Rheinisch-Westfälische Technische Hochschule Aachen | Reinforcing semi-finished product for organic sheets and process for its preparation |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019101975A1 (en) * | 2017-11-24 | 2019-05-31 | Saertex Gmbh & Co. Kg | Unidirectional laid nonwoven and use thereof |
KR20200088448A (en) * | 2017-11-24 | 2020-07-22 | 자에르텍스 게엠베하 운트 코. 카게 | Non-woven fabric laid in one direction and its use |
RU2777410C2 (en) * | 2017-11-24 | 2022-08-03 | ЗАЕРТЕКС ГМБХ унд КО. КГ | Unidirectional straight fabric and its use |
KR102597683B1 (en) | 2017-11-24 | 2023-11-02 | 자에르텍스 게엠베하 운트 코. 카게 | Nonwoven fabric laid in one direction and its uses |
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