DE102013203207A1 - Component assembly for use in vehicle manufacturing, has fiber composite components welded with one another at front-sided end areas, and reinforcement designed as shock welding seam and formed in connection area of composite components - Google Patents

Component assembly for use in vehicle manufacturing, has fiber composite components welded with one another at front-sided end areas, and reinforcement designed as shock welding seam and formed in connection area of composite components Download PDF

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DE102013203207A1
DE102013203207A1 DE201310203207 DE102013203207A DE102013203207A1 DE 102013203207 A1 DE102013203207 A1 DE 102013203207A1 DE 201310203207 DE201310203207 DE 201310203207 DE 102013203207 A DE102013203207 A DE 102013203207A DE 102013203207 A1 DE102013203207 A1 DE 102013203207A1
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fiber composite
composite components
fiber
components
component
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DE201310203207
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German (de)
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Clemens Stefanziosa
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Bayerische Motoren Werke AG
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Bayerische Motoren Werke AG
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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
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/50—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like
    • B29C65/5007—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like characterised by the structure of said adhesive tape, threads or the like
    • B29C65/5014—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like characterised by the structure of said adhesive tape, threads or the like being fibre-reinforced
    • 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
    • B29C65/40—Applying molten plastics, e.g. hot melt
    • B29C65/42—Applying molten plastics, e.g. hot melt between pre-assembled parts
    • 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
    • B29C65/4805—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the type of adhesives
    • B29C65/481—Non-reactive adhesives, e.g. physically hardening adhesives
    • B29C65/4815—Hot melt adhesives, e.g. thermoplastic adhesives
    • 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
    • B29C65/4865—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding containing additives
    • B29C65/487—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding containing additives characterised by their shape, e.g. being fibres or being spherical
    • B29C65/488—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding containing additives characterised by their shape, e.g. being fibres or being spherical being longitudinal, e.g. 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
    • 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
    • B29C65/50—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like
    • B29C65/5042—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like covering both elements to be joined
    • 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
    • B29C66/03—After-treatments in the joint area
    • B29C66/038—Covering the joint by a coating material
    • B29C66/0384—Covering the joint by a coating material the coating material being in tape, strip or band form
    • 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
    • B29C66/114—Single butt joints
    • B29C66/1142—Single butt to butt 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
    • B29C66/40—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
    • B29C66/01—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
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/122—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section
    • B29C66/1224—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section comprising at least a butt joint-segment
    • 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
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/122—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section
    • B29C66/1226—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section comprising at least one bevelled joint-segment
    • 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
    • B29C66/71—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 composition of the plastics material of the parts to be joined
    • 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)
  • Reinforced Plastic Materials (AREA)

Abstract

The assembly (10) has fiber composite components (11, 12) comprising reinforcement fibers that are embedded in a matrix of thermoplastic material. The composite components are positioned such that a front-sided end area of one of the composite components faces a front-sided end area of another composite component. The composite components are welded with one another at the end areas, and a reinforcement designed as a shock welding seam (14) is formed in a connection area of the composite components. The welding seam has V-shaped cross-section, and reinforced with stainless steel fabric. Independent claims are also included for the following: (1) a method for manufacturing a component assembly (2) a method for repairing damaged composite components.

Description

Die vorliegende Erfindung betrifft eine Baugruppe aus zwei Faserverbundbauteilen, wobei jedes der Faserverbundbauteile Verstärkungsfasern aufweist, die in einer Matrix eingebettet sind. Darüber hinaus betrifft die Erfindung ein Verfahren zur Herstellung einer solchen Baugruppe sowie ein Reparaturverfahren zur Instandsetzung beschädigter Faserverbundbauteile.The present invention relates to an assembly of two fiber composite components, each of the fiber composite components having reinforcing fibers embedded in a matrix. In addition, the invention relates to a method for producing such an assembly and a repair method for repairing damaged fiber composite components.

Zur Schaffung eines nachhaltigen Umgangs mit Energieressourcen ist man im heutigen Fahrzeugbau bestrebt, Leichtbaustrukturen zu verwenden. Hierzu eignen sich kunstfaserverstärkte 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 verwendet.In order to create a sustainable use of energy resources, in today's vehicle construction one strives to use lightweight structures. Synthetic fiber-reinforced plastics are suitable for this, since they have particularly high mechanical properties while having a 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.

Solche Überlappverbindungen benötigen je nach Ausführung zusätzlichen Bauraum, der zu Package-Problemen führen kann. Insbesondere bei der Verwendung dünnwandiger Bauteile, die eine Faserverstärkung besitzen, tritt das Problem auf, dass die Faserverstärkung an der Trennstelle unterbrochen ist und dadurch das gesamte Bauteil geringere mechanische Eigenschaften aufweist.Such overlap connections require additional space depending on the design, which can lead to package problems. In particular, when using thin-walled components which have a fiber reinforcement, the problem arises that the fiber reinforcement is interrupted at the point of separation and thus the entire component has lower mechanical properties.

Ausgehend von diesem, internen, Stand der Technik macht es sich die vorliegende Erfindung zur Aufgabe, eine Baugruppe und ein Verfahren anzugeben, mit dem die Nachteile des Standes der Technik überwunden werden. Ferner ist es Aufgabe der Erfindung, ein Reparaturverfahren für faserverstärkte Kunststoffbauteile anzugeben, mit dem Baugruppen realisierbar sind, die an der Reparaturstelle hohe mechanische Eigenschaften aufweisen.Based on this, internal, prior art, the present invention has the object to provide an assembly and a method, with which the disadvantages of the prior art are overcome. It is another object of the invention to provide a repair method for fiber-reinforced plastic components, can be realized with the modules, which have high mechanical properties at the repair site.

Diese Aufgabe wird durch eine Baugruppe und ein Verfahren mit den Merkmalen der unabhängigen Ansprüche gelöst. Die abhängigen Ansprüche stellen vorteilhafte Ausführungsformen der Erfindung dar.This object is achieved by an assembly and a method 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 und wobei die Faserverbundbauteile so zueinander positioniert sind, dass ein stirnseitiger Endbereich eines Faserverbundbauteils einem stirnseitigen Endbereich eines anderen Faserverbundbauteils gegenübersteht. Die Faserverbundbauteile sind somit auf Stoß zueinander ausgerichtet und werden an diesen stirnseitigen Endbereichen miteinander verschweißt. Zudem kann in dem Verbindungsbereich, d. h. an der Stoßstelle der zwei Faserverbundbauteile, mindestens eine Verstärkung vorgesehen sein. Dies bietet den Vorteil, dass die lokale Schwächung der Baugruppe in diesem Bereich ausgeglichen wird.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 and wherein the fiber composite components are positioned to each other such that a front end portion of a fiber composite component an end face of another fiber composite component faces. The fiber composite components are thus aligned with each other on impact and are welded together at these end-side end portions. In addition, in the connection area, i. H. be provided at the junction of the two fiber composite components, at least one reinforcement. This has the advantage that the local weakening of the assembly in this area is compensated.

Die Verstärkung kann als ein Band ausgebildet sein, das mit jedem der Faserverbundbauteile in berührendem Kontakt steht und diese miteinander verbindet.The reinforcement may be formed as a band which is in touching contact with and interconnects each of the fiber composite components.

Zusätzlich kann das Band aus faserverstärktem Kunststoff ausgebildet sein mit einer thermoplastischen Matrix. Dabei können die Fasern unidirektional in der thermoplastischen Matrix ausgerichtet sein. Dies bietet den Vorteil, dass durch die thermoplastische Matrix eine besonders gute, stoffschlüssige Verbindung beim Schweißen des Bandes mit den beiden Faserverbundbauteilen eingeht.In addition, the band of fiber reinforced plastic may be formed with a thermoplastic matrix. The fibers may be unidirectionally oriented in the thermoplastic matrix. This offers the advantage that due to the thermoplastic matrix, a particularly good cohesive connection is achieved when welding the strip to the two fiber composite components.

In einer weiteren Alternative kann auf jeder Seite der Bauteilgruppe ein Band angeordnet sein. Sofern eine beidseitige Zugänglichkeit an der Schweißnaht gewährleistet ist, kann dadurch auf beiden Seiten der Schweißnaht ein Band aufgebracht werden, um eine besonders feste Bauteilverbindung zu realisieren.In a further alternative, a band may be arranged on each side of the component group. If bilateral accessibility to the weld is ensured, a band can be applied on both sides of the weld in order to realize a particularly strong component connection.

Zusätzlich oder alternativ dazu kann die Verstärkung als eine Stoßschweißnaht ausgebildet sein mit einem kurzfaserverstärkten Granulat als Schweißzusatz, wobei das Granulat aus einem thermoplastischen Material, insbesondere aus Polyamid-6 (PA6), Polyamid-66 (PA66), Polyetherimid (PEI), Polyetherketon (PEEK) und/oder Polyphenylensulfid (PPS) mit 10 bis 50 Gew.-% Kohlenstofffasern, bevorzugt 20 bis 40 Gew.-% Kohlenstofffasern und besonders bevorzugt 30 Gew.-% Kohlenstofffasern. Gegenüber reinem Thermoplast-Schweißdraht bietet kurzfaserverstärktes Granulat den Vorteil, dass die Fügestelle höhere mechanische Eigenschaften liefert.Additionally or alternatively, the reinforcement may be formed as a butt weld with a short fiber reinforced granules as welding filler, wherein the granules of a thermoplastic material, in particular polyamide-6 (PA6), polyamide-66 (PA66), polyetherimide (PEI), polyether ketone ( PEEK) and / or polyphenylene sulfide (PPS) with 10 to 50 wt .-% carbon fibers, preferably 20 to 40 wt .-% carbon fibers and particularly preferably 30 wt .-% carbon fibers. Compared with pure thermoplastic welding wire, short fiber reinforced granules offer the advantage that the joint provides higher mechanical properties.

Darüber hinaus kann die Stoßschweißnaht eine V-förmige Querschnittsform aufweisen und in ihrem oberen Bereich mit einem Edelstahlgewebe verstärkt sein.In addition, the butt weld may have a V-shaped cross-sectional shape and be reinforced in its upper region with a stainless steel mesh.

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

  • – Ausrichten der zwei Faserverbundbauteile zueinander, so dass ein stirnseitiger Endbereich eines Faserverbundbauteils einem stirnseitigen Endbereich des anderen Faserverbundbauteils gegenübersteht,
  • – Erzeugen einer Schweißverbindung im Stoßbereich der beiden Faserverbundbauteile, wobei im Stoßbereich eine Verstärkung vorgesehen wird. Dies bietet den Vorteil, dass die Stoßverbindung gegenüber Überlappverbindungen eine geringe Bauraumhöhe benötigt.
In a further aspect, the invention relates to a method for manufacturing an assembly from two fiber composite components, wherein each fiber composite component comprises reinforcing fibers embedded in a matrix of thermoplastic material, comprising the following steps:
  • Aligning the two fiber composite components to one another so that a front end region of a fiber composite component faces an end region of the other fiber composite component,
  • - Creating a welded joint in the joint area of the two fiber composite components, wherein a reinforcement is provided in the joint area. This offers the advantage that the butt joint requires a small space height compared to lap joints.

Weiterhin kann ein Band aus faserverstärktem Kunststoff auf die Faserverbundbauteile aufgebracht werden, so dass es mit beiden Faserverbundbauteilen in berührendem Kontakt steht.Furthermore, a band of fiber-reinforced plastic can be applied to the fiber composite components, so that it is in touching contact with both fiber composite components.

Darüber hinaus kann das Band derart aufgebracht werden, dass es sich über den Stoßbereich hinweg über beide Faserverbundbauteile erstreckt und damit beider Faserverbundbauteile zumindest teilweise überlappt.In addition, the band may be applied such that it extends over the joint region across both fiber composite components and thus at least partially overlaps the composite fiber components.

In einem weiteren Aspekt betrifft die Erfindung ein Reparaturverfahren für beschädigte Faserverbundbauteile mit den Schritten:

  • – Heraustrennen einer beschädigten Stelle aus dem 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 oben beschriebenen Verfahren.
In a further aspect, the invention relates to a repair method for damaged fiber composite components with the steps:
  • Removing a damaged area from the fiber composite 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 described 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 wird 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 anderen Kombinationen betrachten, um weitere Ausführungsformen zu bilden, die an entsprechende Anwendungen der Erfindung angepasst sind.The invention is explained in more detail below 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 other combinations to form further embodiments that are adapted to corresponding applications of the invention.

Es zeigt in schematischer DarstellungIt shows in a schematic representation

1 eine Seitenansicht auf eine Verbindungsstelle zwischen zwei Faserverbundbauteilen. 1 a side view of a junction between two fiber composite components.

1 zeigt eine Baugruppe 10, bei der zwei Faserverbundbauteile 11 und 12 miteinander gefügt sind, um die Baugruppe 10 zu bilden. Jedes Bauteil 11, 12 weist einen stirnseitigen Endbereich auf. Dieser Endbereich ist in Längsrichtung am Ende des Bauteils angeordnet und weist eine im Wesentlichen senkrecht zur Längsachse des Bauteils ausgerichtete Oberfläche auf. Die Bauteile 11, 12 sind zum Fügen so zueinander ausgerichtet, dass diese Endbereiche einander gegenüber liegen. Dadurch kann ein Fügen der Bauteile 11, 12 auf Stoß erfolgen. In dem Stoßbereich 13 werden die Bauteile mit Hilfe einer Stoßschweißnaht miteinander verschweißt. 1 shows an assembly 10 in which two fiber composite components 11 and 12 are joined together to the assembly 10 to build. Every component 11 . 12 has a front end region. This end region is arranged in the longitudinal direction at the end of the component and has a surface oriented essentially perpendicular to the longitudinal axis of the component. The components 11 . 12 are aligned for joining to each other so that these end portions are opposite to each other. This allows a joining of the components 11 . 12 done on impact. In the push area 13 The components are welded together using a butt weld.

Um den Stoßbereich 13, d. h. die Verbindungsstelle, zu verstärken und dadurch hohe mechanische Eigenschaften zu erzielen, wird ein Band 15 auf den Stoßbereich 13 aufgebracht. Hierbei finden insbesondere Tapes aus thermoplastischem Matrixmaterial mit unidirektional darin ausgerichteten Fasern Anwendung. Als Schweißzusatz zum Erzeugen der Stoßschweißnaht 14 wird ein Granulat aus thermoplastischen Material, insbesondere aus Polyamid-6 (PA6), Polyamid-66 (PA66), Polyetherimid (PEI), Polyetherketon (PEEK) und/oder Polyphenylensulfid (PPS) verwendet, das mit Carbonfasern verstärkt sind. Die Kohlenstofffasern liegen als Kurzfasern vor Das Granulat weißt somit 10 bis 50 Gew.-% Kohlenstofffasern, bevorzugt 20 bis 40 Gew.-% Kohlenstofffasern und besonders bevorzugt 30 Gew.-% Kohlenstofffasern auf.To the shock area 13 That is, to strengthen the joint, and thereby achieve high mechanical properties, becomes a band 15 on the butt area 13 applied. In particular, tapes made of thermoplastic matrix material with unidirectionally oriented fibers are used. As welding filler for producing the butt weld 14 is a granules of thermoplastic material, in particular of polyamide-6 (PA6), polyamide-66 (PA66), polyetherimide (PEI), polyether ketone (PEEK) and / or polyphenylene sulfide (PPS) used, which are reinforced with carbon fibers. The granules thus comprise 10 to 50% by weight of carbon fibers, preferably 20 to 40% by weight of carbon fibers and particularly preferably 30% by weight of carbon fibers.

Zusätzlich oder alternativ kann in der Kehlnaht 14 zur Verstärkung ein Edelstahlgewebe angeordnet sein. Dieses Edelstahlgewebe ist dann in 1 oberen Bereich der V-Naht 14 vorzusehen, um eine besonders gute Verstärkung der Schweißnaht zu realisieren.Additionally or alternatively, in the fillet weld 14 be arranged to reinforce a stainless steel mesh. This stainless steel mesh is then in 1 upper area of the V-seam 14 provided in order to realize a particularly good reinforcement of the weld.

Im Folgenden soll ein Reparaturverfahren zum Reparieren beschädigter Faserverbundbauteile erläutert werden unter Bezugnahme auf 1. Abweichend von der Darstellung in 1 ist das Faserverbundbauteil 11 nicht einseitig, sondern beidseitig von dem zweiten Faserverbundteil 12 ausgerichtet. Mit anderen Worten, bei dem Faserverbundteil 11 handelt es sich um ein durchgängiges Bauteil, das eine schadhafte Stelle aufweist, an der Stelle, an der das zweite Bauteil 12 eingebracht wird. Diese schadhafte Stelle wird herausgetrennt beispielsweise durch Heraussagen oder -flexen. Nach dem Entfernen der schadhaften Stelle wird ein zweites Verbundbauteil 12 so zurecht geschnitten, dass es geometrisch in die herausgetrennte Stelle zwischen die zwei Teile des ersten Faserverbundteils 11 hineinpasst. Beim Einbringen des zweiten Faserverbundteils 12 an die beschädigte Stelle des ersten Faserverbundteils 11 werden stirnseitige Endbereiche des Faserverbundteils 11 und das Ersatzbauteils 12 einander gegenüberliegend ausgerichtet. Anschließend wird in den Stoßbereichen der beiden Faserverbundteile 11, 12 eine Schweißnaht 14 erzeugt. Diese Schweißnaht kann wie oben beschrieben mit Bezug zu 1 entsprechende Verstärkungen aufweisen.In the following, a repair method for repairing damaged fiber composite components will be explained with reference to FIG 1 , Deviating from the illustration in 1 is the fiber composite component 11 not one-sided, but on both sides of the second fiber composite part 12 aligned. In other words, in the fiber composite part 11 it is a continuous component, which has a damaged spot, at the point where the second component 12 is introduced. This damaged spot is cut out, for example, by announcing or flexing. After removing the damaged area becomes a second composite component 12 cut so that it geometrically in the cut-out between the two parts of the first fiber composite part 11 fits. When introducing the second fiber composite part 12 to the damaged area of the first fiber composite part 11 become end-side end portions of the fiber composite part 11 and the replacement part 12 aligned opposite each other. Subsequently, in the joint areas of the two fiber composite parts 11 . 12 a weld 14 generated. This weld can be as described above with reference to 1 have corresponding reinforcements.

Claims (9)

Baugruppe (10) aus zwei Faserbundbauteilen (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 stirnseitiger Endbereich eines Faserverbundbauteils (11, 12) einem stirnseitigen Endbereichen eines anderen Faserverbundbauteils (11, 12) gegenübersteht, wobei die Faserverbundbauteile (11, 12) an diesen stirnseitigen Endbereichen miteinander verschweißt sind, dadurch gekennzeichnet, dass in dem Verbindungsbereich der Faserverbundbauteile (11, 12) mindestens eine Verstärkung vorgesehen ist.Assembly ( 10 ) 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 relative to each other such that a front end region of a fiber composite component ( 11 . 12 ) an end-face end portions of another fiber composite component ( 11 . 12 ), wherein the fiber composite components ( 11 . 12 ) are welded together at these end-side end regions, characterized in that in the connection region of the fiber composite components ( 11 . 12 ) is provided at least one gain. Baugruppe nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass die Verstärkung als eine Stoßschweißnaht (14) ausgebildet ist, mit einem kurzfaserverstärktem Granulat als Schweißzusatz, wobei das Granulat aus einem thermoplastischen Material, insbesondere aus Polyamid-6 (PA6), Polyamid-66 (PA66), Polyetherimid (PEI), Polyetherketon (PEEK) und/oder Polyphenylensulfid (PPS) mit 10 bis 50 Gew.-% Kohlenstofffasern, bevorzugt 20 bis 40 Gew.-% Kohlenstofffasern und besonders bevorzugt 30 Gew.-% Kohlenstofffasern.An assembly according to one of claims 1 or 2, characterized in that the reinforcement is designed as a butt weld ( 14 ), with a short-fiber-reinforced granules as welding filler, wherein the granules of a thermoplastic material, in particular polyamide-6 (PA6), polyamide-66 (PA66), polyetherimide (PEI), polyether ketone (PEEK) and / or polyphenylene sulfide (PPS ) with 10 to 50 wt .-% carbon fibers, preferably 20 to 40 wt .-% carbon fibers and particularly preferably 30 wt .-% carbon fibers. Baugruppe nach Anspruch 2, dadurch gekennzeichnet, dass die Stoßschweißnaht einen v-förmigen Querschnitt aufweist und in ihrem oberen Bereich mit einem Edelstahlgewebe verstärkt ist.An assembly according to claim 2, characterized in that the butt weld has a V-shaped cross section and is reinforced in its upper region with a stainless steel mesh. Baugruppe nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Verstärkung als ein Band (15) ausgebildet ist, das mit jedem der Faserverbundbauteile (11, 12) in berührendem Kontakt steht und diese miteinander verbindet.Assembly according to one of the preceding claims, characterized in that the reinforcement is a ribbon ( 15 ) formed with each of the fiber composite components ( 11 . 12 ) is in touching contact and connects them. Baugruppe nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Band aus faserverstärktem Kunststoff mit einer thermoplastischen Matrix ausgebildet ist.Assembly according to one of the preceding claims, characterized in that the band of fiber-reinforced plastic is formed with a thermoplastic matrix. 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 stirnseitiger Endbereich eines Faserverbundbauteils (11) einem stirnseitigen Endbereich des anderen Faserverbundbauteils (12) gegenüber steht, – Erzeugen einer Schweißverbindung im Stoßbereich (13) der beiden Faserverbundbauteile (11, 12), dadurch gekennzeichnet, dass – im Stoßbereich (13) eine Verstärkung (14, 15) vorgesehen ist.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 front end region of a fiber composite component ( 11 ) an end-side end region of the other fiber composite component ( 12 ), - creating a welded joint in the joint area ( 13 ) of the two fiber composite components ( 11 . 12 ), characterized in that - in the joint area ( 13 ) a reinforcement ( 14 . 15 ) is provided. Verfahren nach Anspruch 6, dadurch gekennzeichnet, dass – ein Band aus faserverstärktem Kunststoff auf die Faserverbundbauteile (11, 12) aufgebracht wird, so dass es mit beiden Faserverbundbauteilen (11, 12) in berührendem Kontakt steht.A method according to claim 6, characterized in that - a band of fiber-reinforced plastic on the fiber composite components ( 11 . 12 ) is applied, so that it with both fiber composite components ( 11 . 12 ) is in touching contact. Verfahren nach Anspruch 7, dadurch gekennzeichnet, dass das Band über den Stoßbereich hinweg aufgebracht wird.A method according to claim 7, characterized in that the tape is applied over the joint region. Reparaturverfahren für beschädigte Faserverbundbauteile, mit den Schritten: – Heraustrennen einer beschädigten Stelle aus dem Faserverbundbauteil (11), – Einbringen eines zweiten Faserverbundbauteil (12) als Ersatzbauteil an die beschädigte Stelle des ersten Faserverbundbauteils, und – Erzeugen einer Baugruppe durch Verbindung der beiden Faserverbundbauteile (11, 12) mit einem Verfahren nach einem der Ansprüchen 6 bis 8.Repair method for damaged fiber composite components, comprising the steps of: - removing a damaged area from the fiber composite component ( 11 ), - introducing a second fiber composite component ( 12 ) as a replacement component to the damaged point of the first fiber composite component, and - generating an assembly by connecting the two fiber composite components ( 11 . 12 ) with a method according to any one of claims 6 to 8.
DE201310203207 2013-02-27 2013-02-27 Component assembly for use in vehicle manufacturing, has fiber composite components welded with one another at front-sided end areas, and reinforcement designed as shock welding seam and formed in connection area of composite components Granted DE102013203207A1 (en)

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