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DE102013203208A1 - Assembly for two fiber composite components for motor vehicle, has reinforcing fibers embedded in matrix of thermoplastic material, where composite fiber components are positioned to each other - Google Patents

Assembly for two fiber composite components for motor vehicle, has reinforcing fibers embedded in matrix of thermoplastic material, where composite fiber components are positioned to each other Download PDF

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Publication number
DE102013203208A1
DE102013203208A1 DE201310203208 DE102013203208A DE102013203208A1 DE 102013203208 A1 DE102013203208 A1 DE 102013203208A1 DE 201310203208 DE201310203208 DE 201310203208 DE 102013203208 A DE102013203208 A DE 102013203208A DE 102013203208 A1 DE102013203208 A1 DE 102013203208A1
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Prior art keywords
fiber composite
components
fiber
assembly
component
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DE201310203208
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German (de)
Inventor
Clemens Stefanziosa
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Bayerische Motoren Werke AG
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Bayerische Motoren Werke AG
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Priority to DE201310203208 priority Critical patent/DE102013203208A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/72—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by combined operations or combined techniques, e.g. welding and stitching
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
    • B29C66/21—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being formed by a single dot or dash or by several dots or dashes, i.e. spot joining or spot welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/721—Fibre-reinforced materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B29C66/73921—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C73/00—Repairing of articles made from plastics or substances in a plastic state, e.g. of articles shaped or produced by using techniques covered by this subclass or subclass B29D
    • B29C73/04—Repairing of articles made from plastics or substances in a plastic state, e.g. of articles shaped or produced by using techniques covered by this subclass or subclass B29D using preformed elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C73/00—Repairing of articles made from plastics or substances in a plastic state, e.g. of articles shaped or produced by using techniques covered by this subclass or subclass B29D
    • B29C73/24—Apparatus or accessories not otherwise provided for
    • B29C73/26—Apparatus or accessories not otherwise provided for for mechanical pretreatment
    • B29C2073/264—Apparatus or accessories not otherwise provided for for mechanical pretreatment for cutting out or grooving the area to be repaired
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/721—Fibre-reinforced materials
    • B29C66/7212—Fibre-reinforced materials characterised by the composition of the fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C73/00—Repairing of articles made from plastics or substances in a plastic state, e.g. of articles shaped or produced by using techniques covered by this subclass or subclass B29D
    • B29C73/24—Apparatus or accessories not otherwise provided for
    • B29C73/26—Apparatus or accessories not otherwise provided for for mechanical pretreatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

The assembly (10) has reinforcing fibers embedded in a matrix of thermoplastic material. The composite fiber components (11,12) are positioned to each other, such that a fiber composite component partially overlaps to the other fiber composite component. The composite fiber components are glued together. The fiber composite components are integrally connected to each other on a welding point (13), where the welding point is provided in an overlap section (a). Independent claims are included for the following: (1) a method for manufacturing an assembly for two fiber composite components; and (2) a method for repairing damaged fiber composite components.

Description

Die Erfindung betrifft eine Baugruppe aus zwei Faserverbundbauteilen, wobei jedes Faserverbundbauteil Verstärkungsfasern aufweist, die in einer Matrix aus thermoplastischem Material eingebettet sind. Darüber hinaus betrifft die Erfindung ein Verfahren zur Herstellung einer solchen Bauteilgruppe.The invention relates to an assembly of two fiber composite components, each fiber composite component having reinforcing fibers embedded in a matrix of thermoplastic material. Moreover, the invention relates to a method for producing such a component group.

Zur Schaffung eines nachhaltigen Umgangs mit Energieressourcen ist man im heutigen Fahrzeugbau bestrebt, Leichtbaustrukturen zu verwenden. Hierzu eignen sich faserverstärkte Kunststoffe, da sie besonders hohe mechanische Eigenschaften aufweisen bei gleichzeitig niedrigem Gewicht. Somit kann der Fahrzeugverbrauch reduziert werden. Im Gegensatz zu bekannten Strukturbauteilen aus Metall, bei denen eine Vielzahl unterschiedlicher Fügeverfahren bekannt sind, kommt zum Fügen von Kunststoffbauteilen bzw. faserverstärkten Kunststoffbauteilen im Allgemeinen nur die Klebetechnik zur Anwendung. Insbesondere wenn faserverstärkte Strukturbauteile beschädigt werden und ersetzt oder repariert werden müssen, sind komplizierte Reparaturverfahren notwendig, die mit hohem Aufwand verbunden sind. Bislang werden die schadhaften Abschnitte herausgetrennt und durch neue Strukturelemente ersetzt. Die neuen Bauteile werden an die bestehende faserverstärkte Struktur über Kupplungselemente angebunden und so überlappend miteinander verklebt. Zur Positionierung des Ersatzbauteils sowie zur Justierung des Klebespalts werden Spannelemente verwendetIn order to create a sustainable use of energy resources, in today's vehicle construction one strives to use lightweight structures. For this purpose, fiber-reinforced plastics are suitable because they have particularly high mechanical properties at the same time low weight. Thus, the vehicle consumption can be reduced. In contrast to known structural components made of metal, in which a multiplicity of different joining methods are known, only the bonding technique is generally used for joining plastic components or fiber-reinforced plastic components. In particular, when fiber-reinforced structural components are damaged and must be replaced or repaired, complicated repair procedures are necessary, which are associated with high costs. So far, the defective sections are separated out and replaced by new structural elements. The new components are connected to the existing fiber-reinforced structure via coupling elements and thus glued overlapping each other. For positioning of the replacement component as well as for adjusting the adhesive gap clamping elements are used

Ausgehend von diesem internen Stand der Technik macht es sich die vorliegende Erfindung zur Aufgabe, ein vereinfachtes Verfahren anzugeben, sowie eine vereinfachte Baugruppe anzugeben, mit dem die Nachteile des Standes der Technik überwunden werden.Based on this internal state of the art, it is the object of the present invention to provide a simplified method and to provide a simplified module with which the disadvantages of the prior art are overcome.

Diese Aufgabe wird durch ein Verfahren und eine Baugruppe mit den Merkmalen der unabhängigen Ansprüche gelöst. Die abhängigen Ansprüche stellen vorteilhafte Ausführungen der Erfindung dar.This object is achieved by a method and an assembly having the features of the independent claims. The dependent claims represent advantageous embodiments of the invention.

Zur Lösung dieser Aufgabe schlägt die Erfindung eine Baugruppe aus zwei Faserverbundbauteilen vor, wobei jedes Faserverbundbauteil Verstärkungsfasern aufweist, die in einer Matrix aus thermoplastischem Material eingebettet sind, wobei die Faserverbundbauteile so zueinander positioniert sind, dass ein Faserverbundbauteil das andere zumindest abschnittsweise überlappt und wobei die Faserverbundbauteile miteinander verklebt sind. Darüber hinaus können die Faserverbundbauteile über einen Schweißpunkt miteinander stoffschlüssig verbunden sein, wobei der Schweißpunkt im Überlappabschnitt vorgesehen ist. Durch die doppelte Fixierung der Bauteile zueinander, mittels eines Klebeverfahrens und mittels eines Schweißverfahrens, ergibt sich eine besonders gute Verbindung der Bauteile. Die primäre Anbindung erfolgt dabei über die Klebeverbindung im Überlappbereich. Durch die zusätzliche Punktverschweißung erfolgt eine Positionierung der Bauteile zueinander, wodurch sich eine Handlingfestigkeit ergibt, so dass die Baugruppe handhabbar umpositionierbar ist, ohne dass der Klebstoff vollständig ausgehärtet ist. Eine zusätzliche Fixierung der Bauteile zueinander während des Aushärtevorgangs des Klebers, beispielsweise über Spannelemente ist nicht erforderlich. Darüber hinaus bietet die Punktschweißung den Vorteil, dass eine konstante Klebespaltendicke gewährleistet wird. Nicht zuletzt wird auch die Festigkeit der Überlappverbindung durch die Punktschweißung erhöht.To achieve this object, the invention proposes an assembly of two fiber composite components, wherein each fiber composite component comprises reinforcing fibers embedded in a matrix of thermoplastic material, wherein the fiber composite components are positioned to each other, that a fiber composite component overlaps the other at least partially and wherein the fiber composite components glued together. In addition, the fiber composite components can be materially connected to each other via a weld point, wherein the weld point is provided in the overlapping section. The double fixation of the components to each other, by means of an adhesive method and by means of a welding process, results in a particularly good connection of the components. The primary connection takes place via the adhesive connection in the overlap area. Due to the additional spot welding positioning of the components to each other, resulting in a handling strength, so that the assembly is repositioned handleable, without the adhesive is completely cured. An additional fixation of the components to each other during the curing process of the adhesive, for example via clamping elements is not required. In addition, the spot welding offers the advantage that a constant adhesive gap thickness is ensured. Not least, the strength of the overlap connection is increased by the spot weld.

Weiterhin kann der Schweißpunkt als ein Ultraschallschweißpunkt ausgebildet sein. Ultraschallschweißpunkte können vorteilhafterweise schnell gesetzt werden und bieten ferner den Vorteil, dass kein Schweißzusatz benötigt wird. Darüber hinaus werden beim Erzeugen der Schweißpunkte die Bauteile nur lokal aufgeschmolzen, so dass nur eine lokale Erwärmung stattfindet. Somit entsteht keine Wärmestrahlung in größere Bereiche der Bauteile. Nicht zuletzt können Schweißpunkte mit Hilfe von Handgeräten erzeugt werden, die insbesondere bei der Reparatur von Bauteilen Vorteile bieten, was die Zugänglichkeit anbetrifft.Furthermore, the weld point may be formed as an ultrasonic welding point. Ultrasonic welding points can advantageously be set quickly and also offer the advantage that no welding filler is needed. In addition, the components are only locally melted when creating the welds, so that only a local heating takes place. Thus, no heat radiation is generated in larger areas of the components. Last but not least, welding spots can be generated with the aid of hand tools, which offer advantages, in particular in the repair of components, with regard to accessibility.

In einem weiteren Aspekt betrifft die Erfindung ein Verfahren zur Herstellung einer Baugruppe aus zwei Faserverbundbauteilen, wobei jedes Faserverbundbauteil Verstärkungsfasern aufweist, die in einer Matrix aus thermoplastischem Material eingebettet sind, mit den Schritten:

  • – Ausrichten der zwei Faserverbundbauteile zueinander, sodass ein Faserverbundbauteil das andere Faserverbundbauteil zumindest abschnittsweise überlappt,
  • – Verkleben der Faserverbundbauteile in dem Überlappabschnitt und
  • – Erzeugen eines Schweißpunktes im Überlappabschnitt.
In a further aspect, the invention relates to a method of manufacturing an assembly of two composite fiber components, each composite fiber component comprising reinforcing fibers embedded in a matrix of thermoplastic material, comprising the steps of:
  • Aligning the two fiber composite components to each other so that a fiber composite component overlaps the other fiber composite component at least in sections,
  • - Gluing the fiber composite components in the overlapping section and
  • - Creating a weld point in the overlap section.

Darüber hinaus kann der Schweißpunkt durch Ultraschallschweißen erzeugt werden.In addition, the welding point can be generated by ultrasonic welding.

In einem weiteren Aspekt betrifft die Erfindung ein Reparaturverfahren zum Reparieren beschädigter Faserverbundbauteile, mit den Schritten:

  • – Heraustrennen einer beschädigten Stelle aus einem ersten Faserverbundbauteil,
  • – Einbringen eines zweiten Faserverbundbauteils als Ersatzbauteil an die beschädigte Stelle des ersten Faserverbundbauteils und
  • – Erzeugen einer Baugruppe durch Verbindung der beiden Faserverbundbauteile mit einem Verfahren der oben genannten Art.
In a further aspect, the invention relates to a repair method for repairing damaged fiber composite components, comprising the steps of:
  • Removing a damaged site from a first composite fiber component,
  • - Introducing a second fiber composite component as a replacement component to the damaged area of the first fiber composite component and
  • - Generating an assembly by connecting the two fiber composite components with a method of the type mentioned above.

Bei den im Vorhergehenden beschriebenen Faserverbundbauteilen können die Fasern als Kurzfaser mit einer Gesamtlang bis zu 20 mm, als Langfaser mit einer Länge von 20 mm bis 50 mm oder als Endlosfaser mit einer Gesamtlänge größer 50 mm ausgebildet sein.In the fiber composite components described above, the fibers may be formed as a short fiber having a total length of up to 20 mm, a long fiber having a length of 20 mm to 50 mm, or an endless fiber having a total length of greater than 50 mm.

Im Folgenden wir die Erfindung anhand der Figurenbeschreibung näher erläutert. Die Ansprüche, die Figuren und die Beschreibung enthalten eine Vielzahl von Merkmalen, die im Folgenden im Zusammenhang mit beispielhaft beschriebenen Ausführungsformen der vorliegenden Erfindung erläutert werden. Der Fachmann wird diese Merkmale auch einzeln und in anderer Kombination betrachten, um weitere Ausführungen zu bilden, die an entsprechende Anwendungen der Erfindung angepasst sind.In the following, we will explain the invention with reference to the description of the figures. The claims, the figures, and the description include a variety of features that will be discussed below in conjunction with exemplary embodiments of the present invention. The person skilled in the art will also consider these features individually and in a different combination in order to form further embodiments which are adapted to corresponding applications of the invention.

Es zeigt in schematischer Darstellung 1 eine Seitenansicht auf eine Baugruppe aus zwei Faserverbundbauteilen.It shows in a schematic representation 1 a side view of an assembly of two fiber composite components.

In 1 ist eine Baugruppe 10, die aus zwei Faserverbundbauteilen 11, 12 ausgebildet ist, abgebildet. Ein erstes Faserverbundbauteil 11 ist so zu einem zweiten Faserverbundbauteil 12 ausgerichtet, dass sich beide Bauteile in dem Überlappabschnitt a überlappen. In diesem Bereich sind die Bauteile 11, 12 über einen Kleber 14 miteinander verbunden. Zusätzlich ist mindestens ein Schweißpunkt 13 vorgesehen, der die zwei Bauteile miteinander verbindet. Diese stoffschlüssige Verbindung kann erzeugt werden, da die Matrix des ersten und die Matrix des zweiten Faserverbundbauteils aus einem thermoplastischen Material ausgebildet sind und somit die Bauteile 11, 12 miteinander stoffschlüssig verschweißt werden können. Zur Herstellung einer solchen Baugruppe 10 werden die zwei Faserverbundbauteile 11, 12 zunächst zueinander ausgerichtet und anschließend miteinander verklebt. Bevor der Klebstoff 14 vollständig aushärtet, wird der Schweißpunkt 13 gesetzt, um die Bauteile aneinander zu fixieren. Dieses Verfahren eignet sich insbesondere auch als Reparaturverfahren zum Reparieren von beschädigten Faserverbundbauteilen, insbesondere von beschädigten kohlefaserverstärkten (CFK) Bauteilen. Hierzu wird aus einem ersten Faserverbundbauteil 11 eine beschädigte Stelle herausgetrennt, beispielsweise durch Heraussagen oder -flexen. Anschließend wird das zweite Faserverbundbauteil so auf die durch das Heraustrennen erzeugte Lücke aufgelegt, dass diese Lücke bzw. die Ausnehmung in dem ersten Bauteil vollständig von dem zweiten Bauteil überdeckt wird. Das zweite Bauteil wird an dem ersten Faserverbundbauteil mit Hilfe eines Klebers aufgeklebt. Anschließend wird das zweite Faserverbundbauteil an dem ersten Faserverbundbauteil fixiert mit Hilfe von Schweißpunkten, die mittels Ultraschallschweißen erzeugt werden.In 1 is an assembly 10 made of two fiber composite components 11 . 12 is formed, shown. A first fiber composite component 11 is so to a second fiber composite component 12 aligned so that both components overlap in the overlapping section a. In this area are the components 11 . 12 over a glue 14 connected with each other. In addition, at least one welding point 13 provided, which connects the two components together. This cohesive connection can be produced since the matrix of the first and the matrix of the second fiber composite component are formed from a thermoplastic material and thus the components 11 . 12 can be welded together cohesively. For the production of such an assembly 10 become the two fiber composite components 11 . 12 initially aligned with each other and then glued together. Before the glue 14 fully cured, becomes the spot weld 13 set to fix the components together. This method is particularly suitable as a repair method for repairing damaged fiber composite components, in particular damaged carbon fiber reinforced (CFRP) components. For this purpose, from a first fiber composite component 11 a damaged spot cut out, for example, by announcing or -flexen. Subsequently, the second fiber composite component is placed on the gap created by the separation, that this gap or the recess in the first component is completely covered by the second component. The second component is glued to the first fiber composite component with the aid of an adhesive. Subsequently, the second fiber composite component is fixed to the first fiber composite component by means of welding points, which are produced by means of ultrasonic welding.

Mit Hilfe dieses neuen Verfahrens sinkt der Reparaturaufwand, da kein zusätzliches Spannsystem für die Positionierung der Bauteile notwendig ist. Das Ersetzen der einzelnen Punktschweißungen kann über Handgeräte erfolgen.With the help of this new method, the repair effort is reduced because no additional clamping system for the positioning of the components is necessary. The replacement of the individual spot welds can be done by hand tools.

Bei der Verwendung des Fügeverfahrens zum Fügen von Strukturbauteilen in der Karosserie-Serienfertigung sind die Faserverbundbauteile, bzw. die erstellten Baugruppen durch die Fixierung zueinander über Ultraschallpunktschweißen sofort transport- bzw. handlefähig. Somit muss das Aushärten des Klebstoffes bis zur weiteren Verarbeitung bzw. bis zum weiteren Transport der Bauteile nicht abgewartet werden.When using the joining method for joining structural components in the body-mass production, the fiber composite components, or the assemblies produced by the fixation to each other via ultrasonic spot welding immediately transportable or able to act. Thus, the curing of the adhesive must not be awaited until further processing or until further transport of the components.

Claims (5)

Baugruppe (10) aus zwei Faserverbundbauteilen (11, 12), wobei jedes Faserverbundbauteil (11, 12) Verstärkungsfasern aufweist, die in einer Matrix aus thermoplastischem Material eingebettet sind, und die Faserverbundbauteile (11, 12) so zueinander positioniert sind, dass ein Faserverbundbauteil (11) das andere zumindest abschnittsweise überlappt, und wobei die Faserverbundbauteile (11, 12) miteinander verklebt sind, dadurch gekennzeichnet, dass die Faserverbundbauteile (11, 12) über einen Schweißpunkt (13) miteinander stoffschlüssig verbunden sind, wobei der Schweißpunkt (13) im Überlappabschnitt vorgesehen ist.Assembly ( 10 ) made of two fiber composite components ( 11 . 12 ), wherein each fiber composite component ( 11 . 12 ) Has reinforcing fibers embedded in a matrix of thermoplastic material and the fiber composite components ( 11 . 12 ) are positioned to each other such that a fiber composite component ( 11 ) overlaps the other at least in sections, and wherein the fiber composite components ( 11 . 12 ) are glued together, characterized in that the fiber composite components ( 11 . 12 ) via a welding point ( 13 ) are materially connected to each other, wherein the welding point ( 13 ) is provided in the overlapping section. Baugruppe nach Anspruch 1, dadurch gekennzeichnet, dass der Schweißpunkt ein Ultraschallschweißpunkt (13) ist.An assembly according to claim 1, characterized in that the welding point is an ultrasonic welding point ( 13 ). Verfahren zur Herstellung einer Baugruppe aus zwei Faserverbundbauteilen (11, 12), wobei jedes Faserverbundbauteil (11, 12) Verstärkungsfasern aufweist, die in einer Matrix aus thermoplastischem Material eingebettet sind, mit den Schritten: – Ausrichten der zwei Faserverbundbauteile (11, 12) zueinander, so dass ein Faserverbundbauteil (11) das andere Faserverbundbauteil (12) zumindest abschnittsweise überlappt, – Verkleben der Faserverbundbauteile (11, 12) in dem Überlappabschnitt gekennzeichnet durch – Erzeugen eines Schweißpunktes (13) im Überlappabschnitt.Method for producing an assembly from two fiber composite components ( 11 . 12 ), wherein each fiber composite component ( 11 . 12 ) Comprises reinforcing fibers embedded in a matrix of thermoplastic material, comprising the steps of: - aligning the two fiber composite components ( 11 . 12 ), so that a fiber composite component ( 11 ) the other fiber composite component ( 12 ) at least partially overlapping, - gluing the fiber composite components ( 11 . 12 ) in the overlapping section characterized by - generating a welding point ( 13 ) in the overlap section. Verfahren nach Anspruch 3, dadurch gekennzeichnet, dass der Schweißpunkt durch Ultraschallschweißen erzeugt wird.A method according to claim 3, characterized in that the welding point is produced by ultrasonic welding. Reparaturverfahren für beschädigte Faserverbundbauteile, mit den Schritten: – Heraustrennen einer beschädigten Stelle aus einem ersten Faserverbundbauteil (11), – Einbringen eines zweiten Faserverbundbauteils (12) als Ersatzbauteil an die beschädigte Stelle des ersten Faserverbundbauteils (11), und – Erzeugen einer Baugruppe durch Verbindung der beiden Faserverbundbauteile (11, 12) mit einem Verfahren nach den Ansprüchen 3 oder 4.Repair method for damaged fiber composite components, comprising the steps of: - removing a damaged point from a first fiber composite component ( 11 ) - introducing a second fiber composite component ( 12 ) as a replacement component to the damaged location of the first fiber composite component ( 11 ), and - generating an assembly by connecting the two fiber composite components ( 11 . 12 ) with a method according to claims 3 or 4.
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