Method for Producing a Fiber Composite Component and Fiber Composite Component

Abstract

A method produces a fiber composite component for a motor vehicle. The method provides a semifinished fiber composite blank, wherein the semifinished fiber composite blank includes reinforcing fibers and a matrix material. The semifinished fiber composite blank is arranged between a first membrane and a second membrane. The semifinished fiber composite blank is shaped into a fiber composite molding by pressing the semifinished fiber composite blank together with the first membrane and the second membrane via a pressing device, and the fiber composite molding is consolidated.

Claims

1-10. (canceled)

11. A method for producing a fiber composite component for a motor vehicle, comprising: providing a fiber composite semifinished part, wherein the fiber composite semifinished part has reinforcement fibers and a matrix material; arranging the fiber composite semifinished part between a first membrane and a second membrane; deforming the fiber composite semifinished part to form a fiber composite molding by pressing the fiber composite semifinished part together with the first membrane and the second membrane via a pressing device; and consolidating the fiber composite molding to produce the fiber composite component.

12. The method according to claim 11, wherein the provided fiber composite semifinished part is provided as a woven fabric, wherein the matrix material has a thermoplastic material.

13. The method according to claim 12, wherein a polycarbonate is used as thermoplastic material of the fiber composite semifinished part.

14. The method according to claim 12, wherein the fiber composite semifinished part is, prior to curing, warmed such that the thermoplastic material is plasticized.

15. The method according to claim 12, wherein the woven fabric is in the form of a plain weave or twill weave.

16. The method according to claim 11, wherein the first membrane and/or the second membrane has a release coating on a side facing toward the fiber composite semifinished part.

17. The method according to claim 11, wherein a parting film is arranged between the first membrane and the fiber composite semifinished part and/or between the second membrane and the fiber composite semifinished part prior to being pressed-together.

18. The method according to claim 11, wherein a first membrane and/or second membrane is used which has an elastomer and/or a silicone or which is formed from an elastomer and/or a silicone.

19. The method according to claim 11, further comprising: in a following method step, at least one form element is integrally injection-molded onto the fiber composite molding via an injection molding device.

20. A fiber composite component produced according to the method of claim 11, wherein the produced component is a motor vehicle component.

21. The fiber composite component according to claim 20, wherein the component is a mirror cap, a ventilation paneling, a body paneling component or an interior component.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0030] FIG. 1 shows, in a side view, a provided fiber composite semifinished part.

[0031] FIG. 2 shows, in a side view, a fiber composite molding during the deformation and consolidation.

[0032] FIG. 3 shows, in a side view, a produced fiber composite molding.

[0033] FIG. 4 shows, in a side view, a produced fiber composite component.

[0034] Elements with the same function and effect are in each case denoted by the same reference designations in FIGS. 1 to 4.

DETAILED DESCRIPTION OF THE DRAWINGS

[0035] FIG. 1 schematically illustrates a provided fiber composite semifinished part 2 in a side view. The fiber composite semifinished part 2 has a woven fabric composed of reinforcement fibers 3 and of a matrix material 8, which has a thermoplastic material. The woven fabric composed of reinforcement fibers 3 is, in this example, embedded into the matrix material 8 or the thermoplastic material. The fiber composite semifinished part 2 is arranged between a first membrane 4 and a second membrane 5. In each case one parting film 9 for lowering a coefficient of friction is arranged between the first membrane 4 and the fiber composite semifinished part 2 and between the second membrane 5 and the fiber composite semifinished part 2.

[0036] In FIG. 2, the fiber composite semifinished part 2 from FIG. 1 has been deformed by means of a pressing tool 7 to form a fiber composite molding 6. For this purpose, the fiber composite semifinished part 2 arranged between the first membrane 4 and the second membrane 5 is arranged between a punch 11 and a die 12 of the pressing tool 7. As a result of the punch 11 and die 12 being moved together, and under the action of introduced heat, the matrix material 8 or the thermoplastic material is plasticized, and the fiber composite semifinished part 2 is deformed. As a result of the consolidation, the material matrix 8 or the plasticized thermoplastic material has solidified, such that the fiber composite molding 6 exhibits dimensional stability and can be removed from the pressing tool 7.

[0037] FIG. 3 schematically shows, in a side view, the produced fiber composite molding 6 removed from the pressing device 7. The first membrane 4, the second membrane 5 and the parting films 9 have detached from the fiber composite molding 6 and can be reused for the production of a further fiber composite molding 6. The reinforcement fibers 3 are furthermore present as a woven fabric, wherein the matrix material 8 or the thermoplastic material fills intermediate spaces of the woven fabric and holds the woven fabric together. In this example, the fiber composite molding 6 must be subjected to a further method step in order to produce the fiber composite component 1. Alternatively, provision may for example be made whereby the fiber composite molding 6 already forms the fiber composite component 1 to be produced.

[0038] FIG. 4 schematically shows a produced fiber composite component 1 in a side view. The fiber composite component 1 differs from the fiber composite molding 6 from FIG. 3 by a form element 10 which has been integrally injection-molded onto the fiber composite molding 6 for example by means of an injection molding process. The material of the form element 10 preferably corresponds to the matrix material 8 or to the thermoplastic material of the fiber composite semifinished part 2, such that an optimal connection between form element 10 and fiber composite molding 6 can be achieved.

LIST OF REFERENCE DESIGNATIONS

[0039] 1 Fiber composite component [0040] 2 Fiber composite semifinished part [0041] 3 Reinforcement fiber [0042] 4 First membrane [0043] 5 Second membrane [0044] 6 Fiber composite molding [0045] 7 Pressing device [0046] 8 Matrix material [0047] 9 Parting film [0048] 10 Form element [0049] 11 Punch [0050] 12 Die