WO2017021329A1

WO2017021329A1 - Method and system for producing a three-dimensional fiber-reinforced part using a modular tool mold

Info

Publication number: WO2017021329A1
Application number: PCT/EP2016/068222
Authority: WO
Inventors: Michael Echle
Original assignee: Dieffenbacher GmbH Maschinen- und Anlagenbau
Priority date: 2015-07-31
Filing date: 2016-07-29
Publication date: 2017-02-09
Also published as: DE102015112623A1; EP3328605A1

Abstract

The invention relates to a method and to a system (10) for producing a three-dimensional semi-finished fiber product (4) reinforced by a reinforcing body (66) and/or comprising a reinforcing hollow structure (77) in a draping station (40), which as a draping tool (41) comprises at least one draping stamp (42) for a semi-finished fiber product (4) formed of fiber mats (5), and a mold shell (45) having a recess (46) for forming a free space (6) in the semi-finished fiber product (4). The method or the system is characterized in that on a surface (43) of the draping stamp (42) located opposite the recess (46), a draping segment (44) and/or a reinforcing body (66) and/or a place holder (88) for forming the hollow structure (77) in the semi-finished fiber product (4) can be temporarily arranged in a detachable manner. By introducing the reinforcing bodies (66) and/or placeholders (88) by means of draping stamps (42), further handling equipment can be advantageously dispensed with. Furthermore, by inserting the reinforcing bodies (66) and/or place holders (88) by means of the draping stamp (42), risks of damage can be avoided, since it is the same tool (41) that is responsible for the shaping of the semi-finished fiber product (4).

Description

METHOD AND APPARATUS FOR PRODUCING A THREE-DIMENSIONAL FIBER-REINFORCED PART WITH HELP

A MODULAR TOOL FORM

The present invention relates to a method and a plant for producing a three-dimensional, reinforced with a reinforcing body and / or a reinforcing hollow structure fiber semi-finished in a Drapierstation, as Drapierwerkzeug at least one Drapierstempel for a made of fiber mats fiber semi-finished and a mold shell having a recess for forming a clearance in the fiber semifinished product

includes.

For the production in particular of fiber-reinforced plastic components

(Fiber composite components) and in particular of carbon fiber reinforced

Plastic components (CFRP components), among other things, the resin transfer molding method (RTM method) is known. The production of a final shape of a fiber composite component 1 by means of this method takes place in industrial plants 10 in the following, outlined in FIGS. 1a) to 1f),

Individual processes: In a first process step, the so-called laying process

prefabricated fiber mats 5 according to a predefined

Layer of fiber layer layer by layer to a semi-finished fiber 4 superimposed. The filing of the fiber mats 5 can traditionally take place in 2D (see FIG. 1 a), that is to say substantially in one plane, wherein the semifinished fiber product 4 has at least the necessary outer contours and possibly also already special layers or layer thicknesses. Alternatively or cumulatively (see

Fig. 1b), the deposition of fiber mats 5 wholly or in part, but also in a Drapierstation 40, by means of which 3D-contoured fiber semifinished products 4 are available, the first approach to the geometry of a fiber preform 3 to be manufactured Fiber composite component 1 correspond. The individual fiber mats 5 such semi-finished fiber products 4 have in addition to the As a rule, fiber mats 5 also have a binder which has adhesive-like or comparable adhesive properties. The binder causes at least a prefixing of the individual fiber mats 5 with each other, so that the fiber semifinished product 4 formed therefrom can be fed sufficiently fixed to the subsequent processes.

Alternatively or in combination for producing a fiber preform 3 in a draping station 40, in a second process step, the preforming process, the fiber semifinished product 4 formed from fiber mats 5 is heated at room temperature or to a forming temperature into a preforming tool 30 a preform station (see Fig. 1c). The deformation of the fiber semifinished product 4 to a fiber preform 3 of the later plastic component 1 is usually under pressure by closing upper mold half 31 and lower mold half 32 of the tool 30 and activation of the binder (in particular heating and cooling), so that it hardens a near-net shape pre-consolidation of the individual fiber mats. 5

causes each other. Finally, the edge region of the fiber preform 3 thus produced can still be trimmed (hereinafter also referred to as trimming or netshaping), for example by punching or

Ultrasonic cutting, so that the fiber preform 3 has defined contour edges. The fiber preform 3 is finally demoulded and can, if necessary, until the following process and method steps

be stored. During the interim storage, a first quality control can already take place. By means of optical testing, in particular the

Ausformgrat the fiber preform (the preform) 3 and any

Fiber distortions, fiber undulations, wrinkles or similar surface defects are detected. In a subsequent third process step, the RTM process, the fiber preform (preform) 3 is transformed into a cleaned and separated, ie, for example, anti-adhesive, coated cavity of a

Forming tool 20 of an RTM station inserted (see Fig. 1d). The generally two-part, namely in particular from the upper die (male) 21 and lower die (die) 22 existing, mold 20 is then closed by a press and injected a one- or two-component resin system in the cavity of the mold 20, wherein it

Matrix material penetrates the fiber structure of the fiber preform 3 and encloses the fibers. After curing of the resin system, the main shape 2 thus obtained (see FIG. 1e) of the fiber composite component 1 can be removed from the mold, if necessary again quality-tested and / or trimmed to the final final shape (see FIG. 1f) of the fiber composite component 1. To prefabricate in such fiber reinforced plastic components

To be able to incorporate reinforcing bodies such as, for example, core materials, appropriate free spaces must already be draped into the semifinished fiber product during the production of the semifinished fiber product. These free spaces are occupied in the further process steps with corresponding reinforcing bodies and integrated in the subsequent process steps wholly or partly in the fiber preform of the fiber composite component.

For the production of free spaces in semi-finished fiber products, in

present Drapierstationen several separate or - as shown in Fig. 1 b) and described for example in WO 2012/062828 A1 - used drawer-mounted multi-drawer. This involves increased space requirements due to the number of draping tools and / or increased costs due to the complexity of multi-unit draping tools. But widespread as it is disadvantageous that the insertion of prefabricated reinforcement body in draped open spaces by hand or with a Handler device is independent of the Drapierwerkzeugen the Drapierstation and this is an interruption of the Drapiervorganges or an automatic operation is necessary. On this basis, the present invention is based on the object, with regard to the draping of a free space in a semi-finished fiber product

to provide improved method and suitable plant, which avoids the disadvantages described above. In addition, an improved, preferably automated, introducing prefabricated

Reinforcement body in draped open spaces allows his.

According to the invention this object is achieved by a method and a system having the features of the independent patent claims. Advantageous embodiments and developments, which can be used individually or in combination with each other, are the subject of the dependent claims.

The invention is based on generic methods or systems in that on a surface opposite the recess of the

Drapierstempels temporarily and / or alternate a Drapiersegment and / or a reinforcing body and / or a placeholder to form a

Hollow structure in the semifinished fiber can be arranged detachably.

The reinforcing bodies can also be designed as pure filler bodies, which fill a certain installation space in the main form of the fiber composite component, but do not necessarily contribute to the reinforcement of the fiber composite component.

In particular, in a fully or partially automated production of a fiber semifinished product is preferred that the arrangement of Drapiersegments and / or the reinforcing body and / or the placeholder on the surface of the Drapierstempels also fully or partially automated, in particular with the help of a drapery associated changing device , he follows. In a further development of the invention, the detachable arrangement of

Drapery segment and / or the reinforcing body and / or the placeholder on the surface of the Drapierstempels cohesively, non-positively, positively, magnetically and / or mechanically. The combination of one or more of these connection possibilities among each other has a variable connection of drape-compliant draping segments and / or

Reinforcement body and / or placeholder on the surface of

Draping punch of a draping tool of the draping station to the advantage. In a first embodiment of the invention, it is preferred if, in an integral draping step, the free space in the fiber semifinished product is conveyed by means of the

Reinforced body draped and this reinforcing body immediately thereafter left in the free space. Even if this

Design of the reinforcing body must be designed not only on the later task in the fiber composite component but also on the forces occurring during draping of the free space, this embodiment has the advantage that a whole Drapierschritt is saved. The use of an integral draping step is generally advantageous when the

Reinforcement body has a certain rigidity, which makes it possible to even drape the fiber mats. In addition, by draping with the reinforcing body, the properties of the reinforcing body should

(for example, by pressure or temperature) are not changed.

In a second embodiment of the invention, it is preferred if, in a first draping step, first the drape is draped in the fiber semifinished product with the aid of the draping segment and draped in the second draping step in this semifinished product

Free space is left a reinforcing body.

In an alternative embodiment of the invention, it is preferred if, in a first draping step, first the drape is draped in the fiber semifinished product with the help of the draping segment and draped in the second draping step in this semifinished product Free space is a placeholder for forming the hollow structure in the fiber semi-finished product is used.

In particular, in such a, two separate Drapierschritte comprehensive method, the use has proven in particular corresponding to the recess trained Drapiersegmente and / or in particular corresponding to the free space formed reinforcing body or placeholder. This advantageously allows the use of specially designed for each task Drapiersegmente and reinforcing body or placeholder, namely the forces occurring during the draping of a depression on the one hand and those forces in the later fiber composite component, including the introduction of reinforcing bodies or placeholders in the area of the free space with an ultimately regardless of drape of the space occurring forces interpreted design has the advantage.

Thus, in a preferred embodiment, in particular inflatable tubes or bottles can be used as placeholders, which are already inflated inserted into the free space or inserted in the slack state in the free space and only then inflated to the final shape.

In addition, in a further embodiment of the invention, it is preferred if, in a third draping step, the reinforcement body left in the free space or the placeholder inserted therein is enclosed by further fiber mats by further draping fiber mats.

In order to ensure a positionally correct holding in the free space left reinforcing body and / or inserted in the free space placeholder can be provided with the depression cooperating holding means. In particular, the holding means can be designed to pull a vacuum, which fixes the reinforcing body and / or the placeholder in the position in the recess, in particular during the third draping step. In a preferred embodiment, finally, after the third

Draping step of the placeholder can be removed from the free space again, so that in the semi-finished fiber at least partially made of fiber mats

enclosed, the semi-finished fiber reinforcing hollow body is formed. This is particularly advantageous if the use of material on fiber mats is to be minimized overall, of course only as far as the mechanical requirements of the final plastic component allow it in this area.

With all this forms at not arranged Drapiersegmenten and / or

Reinforcing bodies and / or spacers, so the surface of the Drapierstempels left free of Drapiersegmenten and / or reinforcing bodies and / or spacers advantageous from the top of the fiber semi-finished product after draping off. Unlike in the prior art, draping free spaces and loading reinforcing bodies and / or spacers no longer requires a complete set of draping tools. Instead, all tasks are taken over by the same drapery stamps. Due to the limited space in a draping station and the sometimes complex formation of Drapierwerkzeuge as a stamp, the known exchange of these in a short cycle time associated with considerable effort and therefore quite expensive. Compared to exchanging complete stamp sets, the cycle time for the production of a fiber semi-finished product reinforced with a reinforcing body and / or comprising a reinforcing hollow structure is advantageously shortened by the temporary alternating detachable arrangement of draping segments or Reinforcing bodies or placeholders on the surface of a drapery stamp. In addition, the space required for a Drapierstation according to the invention is much lower, since no storage space must be kept for a complete second set of stamps. By introducing the reinforcing body and / or placeholder by means of Drapierstempel can further advantageously be dispensed with further handling equipment. In addition, by inserting the reinforcing body and / or placeholder with the Drapierstempel damage risks avoided because it is the same tool, which is responsible for the shaping of the fiber semi-finished product. Finally, simultaneously occurring effects such as wrinkling and / or fiber displacements can be counteracted or

be avoided.

These and other features and advantages of the invention are described below with reference to the exemplary production shown in the drawings of a three-dimensional, reinforced with a reinforcing body and / or a reinforcing hollow structure fiber semi-finished, especially in the course of the production of fiber-reinforced plastic components or

Fiber composite components - to which the present invention is not limited - explained in more detail.

They show schematically:

Fig. 1 a) to f) the typical industrial single process steps of producing a final shape of a fiber-reinforced plastic component in a known plant;

Figures 2a) to d) show various embodiments of how draping segments and reinforcing bodies and spacers can be detachably arranged on the surface of a draping die; and Fig. 3a) to r) the individual process steps of the production of a

three-dimensional, reinforced with a reinforcing body and / or a reinforcing hollow structure comprising semifinished fiber product according to the invention.

In the following description of preferred embodiments, like reference numerals designate like components.

1a) to 1f) show the typical individual industrial process steps of producing a final shape of a fiber composite component 1 in a system 10, as these are known as already acknowledged in the introduction to the description. To make a three-dimensional, with a

Reinforcing body 66 reinforced and / or a reinforcing hollow structure 77 comprising semifinished fiber 4 in a Drapierstation 40 includes these as Drapierwerkzeug 41 at least one Drapierstempel 42 for a made of fiber mats 5 semi-finished fiber 4 and a shell mold 45 with a recess 46 for training of a free space 6 in the fiber semifinished product 4. The present invention is based on such generic methods or installations 10 in that temporarily and / or alternately on a surface 43 of the draping die 42 opposite the recess 46

Draping segments 44 and / or reinforcement body 66 and / or placeholder 88 can be detachably arranged to form a hollow structure 77 in the fiber semifinished product 4. Fig. 2a) to 2d) show various embodiments, such as

Draper segments 44 and reinforcement bodies 66 and / or placeholders 88 can be detachably arranged on the surface 43 of a drapery punch 42. The detachable arrangement of a draping segment 44 or a reinforcing body 66 or spacer 88 on the surface 43 of a Drapierstempels 42 may

cohesively (not shown), non-positively (FIG. 2 a), positive fit (FIG. 2 a), magnetic (FIG. 2 c) and / or mechanical (FIG. Adhesion forces are proposed as holding by material adhesion, such as that of the binder between layers of fiber mats 5, which also creates an adhesion between the individual fiber mats 5 and later responsible for the strength of the fiber preform (preform) 3 is. Therefore, the connection, in particular of remaining in the fiber-semifinished product 4 reinforcing body 66 or at least temporarily inserted placeholder 88, preferably via adhesion forces. About the

Temperature, the adhesive forces of the binder can be activated or deactivated and thus a detachment of the reinforcing body 66 or the spacer 88 from the surface 43 of the Drapierstempels 42 are controlled.

As holding Drapiersegmenten 44 or reinforcing bodies 66 or

Placeholders 88 by traction frictional forces caused in particular by clamping come into question, as exemplified in Fig. 2a) left in an open and right in a closed position of a two-part,

against each other (as arrows indicate) movable Drapierstempels 42 is shown. Alternatively or in combination with this, the holding of the draping segments 44 or the reinforcing bodies 66 or the placeholders 88 can be effected in particular by vacuum drawing.

As holding Drapiersegmenten 44 or reinforcing bodies 66 or

Platzhalter 88 by positive engagement come in particular

Surface hooking in question, as shown by way of example in Fig. 2b) left in a dissolved and right in a connected position by means of needles 55, but also by means of a hook and loop fastener (not shown) is conceivable.

For magnetic bonds, in particular draping segments 44, magnets 56 can be used (as shown by way of example in FIG. 2c) both in the

Drapiersegment 44 and be installed in Drapierstempel 42. The magnets 56 may be both permanent and electromagnets. The

opposite part (Drapiersegment 44 or Drapierstempel 42) must be off consist of a material with ferromagnetic properties, or a ferromagnetic insert 57 or - as in particular in remaining in the fiber-semifinished product 4 reinforcing body 66 or in at least temporarily inserted placeholder 88 conceivable - have a surface with ferromagnetic properties.

Mechanical retention, in particular of draping segments 44, for example by locking by means of a pin or bolt 58, finally shows Fig. 2d) on the left in a released and on the right in a connected position.

A combination of one or more of these connection possibilities with one another has a variable connection of draping-appropriate draping segments 44 and / or reinforcing bodies 66 and / or placeholders 88 on the surface 43 of the draping die 42 of a draping tool 41 of a draping station 40. In particular, in a fully or partially automated production of a fiber semifinished product 4 is preferred that the arrangement of the

Draping segment 44 and / or the reinforcing body 66 and / or the placeholder 88 on the surface 43 of the Drapierstempels 42 also fully or partially automated, in particular by means of a Drapierstation 40 associated and in Fig. 3a) ff.

3a) to 3r) show the individual process steps of the production of a three-dimensional, reinforced with a reinforcing body 66 and / or a reinforcing hollow structure 77 comprising fiber semifinished product 4 according to the invention.

Fig. 3a) shows schematically the draping station 40 of a system 10 for

Production of a three-dimensional, with a reinforcing body 66 reinforced and / or a reinforcing hollow structure 77 comprising semifinished fiber product 4, in an open basic position. It is obvious how the Drapierstation 40 is associated with a change device 50. At least one positioning arm 51 serves for the temporary introduction of

Drapiersegmenten 44 and / or reinforcing bodies 66 or placeholders 88 in the draping station 40 and the application of unneeded Drapiersegmente 44 after so draped open spaces 6 in the fiber-semifinished product. 4

Fig. 3b) shows the positioning of two Drapiersegmente 44 at one

Surface 43 of a Drapierstempels 42 of the draping tools 41 of

Drapierstation 40. It is seen how the positioning arm 51 between Drapierwerkzeug 41 and shell mold 45 can be moved and with

Lifting arms 52 positionally accurate on the surface 43 of the Drapierstempels 42 - for example, as in one or more of the description of FIG. 2 embodiments executed - can be arranged. Fig. 3c) shows the final positioned on the surface 43 of a Drapierstempels 42 Drapiersegmente 44. It is further seen how the positioning arm 51 back to its normal position outside the

Draping station 40 is returned and by means of funding 54 of

Changing device 50 has been started with the scheduled storage of fiber mats 5 for stacking a fiber-semifinished product 4 on the mold shell 45.

Fig. 3d) shows how, after final filing of the fiber mats 5 and retraction of the conveyor 54 from the draping station 40 in a first Drapierschritt by closing the draped with Drapiersegmenten 44 Drapierstempels 42 in a finished stacked semi-finished fiber 4 free spaces 6 for receiving Reinforcing bodies 66 can be formed. For this purpose, the

Mold shell 45 the Drapiersegmenten 44 on the surface 43 of the

Drapierstempels opposite corresponding recesses 46, in which the Drapiersegmente 44 the fiber mats 5 of the fiber semifinished product 4 hineindrapieren. Preferably, prior to draping, the fiber mats 5 of the fiber semifinished product 4 can be fixed, in particular using suitable stamps to avoid unintentional shifting of the individual fiber mats 5 to each other or the entire fiber semi-finished product 4.

Fig. 3e) shows how this offset in time, the edge region of the fiber semifinished product 4 by means of so-called edge punches 47 can be draped. The edge punches 47 can be used in particular for fixing the fiber mats 5 or the fiber semi-finished product 4. In parallel, 50 new fiber mats 5 can be supplied to the conveyor means 54 of the changing device 50 at the appropriate time.

FIG. 3f) shows how, after draping a free space 8 in the fiber semifinished product 4, the draping station 40 again assumes an open basic position in order to allow the changing device 50 to deploy the draping segments 44 and to insert reinforcing bodies 66 or spacers 88

Thus, Fig. 3g), as lifting arms 52 of the positioning 51 of the

Changing means 50 engage under the Drapiersegmente 44, and - as shown in Fig. 3h) - after release of the Drapiersegmente 44 from the surface 43 of the Drapierstempels 42 securely formed in the lifting arms 52

Record 53.

Then, as shown in FIG. 3i), the positioning arm 51 can be moved into a position corresponding to the attachment of the reinforcing bodies 66 (exemplarily shown in the first receptacle 53) or spacers 88 (shown by way of example in the third receptacle 53). The exact positioning of the reinforcing bodies 66 or the placeholders 88 on the surface 43 of the draping die 42 takes place - as shown in FIG. 3j) - again preferably with lifting arms 52. Fig. 3k) shows the final positioned on the surface 43 of a Drapierstempels 42 reinforcing body 66 (left) or place holder 88 (right).

31) shows how, after the positioning arm 51 has been returned to its basic position outside the draping station 40 in a second draping step, the reinforcing body 66 (left) or the placeholder 88 (FIG. 1) is closed by closing the drapery stamp 42 equipped with the reinforcing body 66 or the dummy 88. right) into the previously unpacked free spaces 6 of the fiber semifinished product 4, ie by re-draping the

Drapierstempels 42, the reinforcing body 66 is pressed into its defined position in the free space 6 or the placeholder 88 inserted therein. By loosening the reinforcing body 66 or spacer 88 from the Drapierstempel 42 of the reinforcing body 66 and the placeholder 88 - as shown in Fig. 3m) - in each case in this defined position.

In particular, in such a, two separate Drapierschritte comprehensive method, the use has proven in particular corresponding to the recess 46 formed Drapiersegmente 44 and / or in particular corresponding to the free space 6 formed reinforcing body 66 or placeholder 88. This advantageously allows the use of draping segments 44 and reinforcing bodies 66 or spacers 88 designed especially for the respective task, namely the forces occurring during the draping of a depression 46 on the one hand and those forces in the later fiber composite component 1, which also includes the introduction of reinforcing bodies 66 or spacers 88 in the area of the free space 6 with an ultimately independent of the forces occurring during draping of the free space 6 designed embodiment has the advantage.

Thus, in a preferred development, in particular inflatable tubes or bottles can be used as placeholders 88, which are already inflated inserted into the free space 6 or in the flaccid state in the free space 6 is inserted and only then inflated to the final shape.

In an alternative embodiment of the invention, it is preferred if, in an integral draping step, the free space 6 in the fiber semifinished product 4 by means of the

Reinforcing body 66 draped and this reinforcing body 66 is left immediately thereafter in the free space 6. Although in this embodiment, the reinforcing body 66 must be designed not only on the later task in the fiber composite component 1 but also on the forces occurring during draping of the free space 6, this embodiment has the advantage that a whole Drapierschritt is saved.

The surface 43 of the drapery punch 42, which is now free from both

Draping segments 44 as well as reinforcing bodies 66 and spacers 88, advantageously forms the surface 7 of the fiber semifinished product 4. As shown in FIG. 3n), by means of the conveying means 54, the

Changing device 50 more fiber mats 5 also above the

Placed reinforcing body 66 and the placeholder 88 and in the free space 6 left reinforcing body 66 or placeholder 88 are enclosed with further fiber mats 5.

Fig. 3o) shows how after final storage of further fiber mats 5 the

Change device 50 completely in its normal position outside the

Draping station 40 is returned.

FIG. 3p) shows how the reinforcing body 66 or the placeholder 88 can be enclosed with fiber mats 5 in a third draping step by simultaneously or subsequently closing the unpopulated drape punch 42 and the edge punch 47. In order to keep a positionally correct holding in the free space 6

Reinforcing body 66 and / or placeholder 88 inserted in the free space 6 can be provided, holding means 48 cooperating with the recess 46 can be provided. In particular, the holding means 48 may be configured to pull a vacuum, which the reinforcing body 66 and / or the

Placeholder 88 in the correct position in the recess 46, in particular during the third Drapierschrittes fixed. This can be achieved, for example, by providing openings in the mold shell 45 below the recesses 46, to which a vacuum is drawn and thus the reinforcing body 66 or the placeholder 88 is sucked in or held in position. But also other ways of fixing the

Reinforcement body 66 or placeholder 88 by adhesion, positive engagement or material connection and combination draus are possible. In a preferred embodiment, finally, after the third

Drapierschritt the placeholder 88 are removed from the free space 6 again, so that - as shown in Fig. 3q) - in the semi-finished fiber 4 at least partially enclosed by fiber mats 5, the fiber semi-finished 4 reinforcing hollow body 77 is formed.

As shown in Fig. 3r) - is such a three-dimensional, with a

Reinforcing body 66 reinforced and / or a reinforcing hollow structure 77 comprising fiber semifinished product 4 is available, which - as outlined - leave the draping station 40 and further process steps can be supplied. In the draping station 40 itself can - starting with the step described in Fig. 3a) - then started with a new production cycle.

The advantages of the present invention may be summarized as follows: Unlike in the prior art, draping free spaces 6 and loading reinforcing bodies 66 and / or spacers 88 will not be Complete additional draping tools 41 required more or a time-consuming and costly manual insertion of reinforcing bodies 66 and / or placeholders 88 can be avoided. Instead, all tasks are taken over by the same drapery stamps 42. Due to the limited space in a draping station 40 and the partially complex formation of the draping tools 41 as a punch 42, the known exchange of these in a short cycle time associated with a considerable effort and therefore quite costly. Compared with exchanging complete stamp sets, the cycle time for the production of a fiber semi-finished product 4 reinforced with a reinforcing body 66 and / or a reinforcing hollow structure 77 is advantageously shortened significantly by the temporary alternating detachable arrangement of draping segments 44 or reinforcing bodies 66 or Platzhalter 88 on the surface 43 of a Drapierstempels 42. In addition, the space required for a

Drapierstation 40 according to the invention much lower, since no storage space must be kept for a complete second set of stamps. By introducing the reinforcing body 66 and / or Platzhalter 88 means

Drapierstempel 42 may further advantageous to further

Handling equipment be waived. In addition, by inserting the reinforcing body 66 and / or Platzhalter 88 with the

Drapierstempel 42 damage risks avoided, since it is the same tool 41, which is responsible for the shaping of the fiber semifinished product 4. In particular, the position of the reinforcing body 66 and / or the placeholder 88 can be checked before or after a draping step and thus a permanent quality control can be ensured. Finally, simultaneous effects such as wrinkles and / or fiber shifts can be avoided. List of Reference P1498:

1 fiber composite component

2 main form of 1

3 fiber preform

4 fiber semi-finished products

5 fiber mats

6 free space in the fiber semifinished product 4

7 top side of the fiber semifinished product 4

10 plant

20 mold

21 Tool upper part (male) 22 Lower tool part (female part)

30 two-piece preform tool

31 upper mold half

32 lower mold half

40 drapery station

41 draping tool

42 draping stamps

43 Surface of Drape Stamp 44 Drape Segments

45 shape shell

46 recess in the shell mold 45

47 marginal stamp

48 holding means changer

Positioning arm

lifting arms

Feeding conveyor for fiber mats 5

needles

magnet

ferromagnetic insert

Pin or bolt reinforcing body, in particular core material hollow structure in the fiber semifinished product 4 placeholder

Claims

claims

1 . Method of making a three-dimensional, with a

Reinforcing body (66) reinforced and / or a reinforcing

Hollow structure (77) comprising semifinished fiber product (4), wherein the

Method is performed in a draping station (40), the

at least one draping die (42) for a fiber semifinished product (4) formed from fiber mats (5) and a molding shell (45) having a depression (46) for forming a free space (6) in the fiber material. Semi-finished products (4)

includes, in which

temporarily and / or alternately a draping segment (44) and / or a reinforcing body (66) and / or a placeholder (88) for forming the hollow structure (77) on a surface (43) of the draping die (42) opposite the depression (46) be arranged detachably in the fiber semifinished product (4).

2. The method of claim 1, wherein the Drapiersegment (44) and / or the reinforcing body (66) and / or the placeholder (88) fully or partially automated on the surface (43) of the Drapierstempels (42) are arranged.

3. The method according to claim 1 or 2, wherein in an integral

Drapierschritt the free space (6) in the fiber-semifinished product (4) by means of

Reinforcing body (66) draped and this reinforcing body (66) immediately thereafter in the free space (6) is left.

4. The method of claim 1 or 2, wherein in a first Drapierschritt initially draped with the help of Drapiersegments (44) of the free space (6) in the fiber semifinished product (4) and in a second Drapierschritt in this

Free space (6) a reinforcing body (66) is left. The method of claim 1 or 2, wherein in a first Drapierschritt first by means of Drapiersegments (44) of the free space (6) draped in the fiber semifinished product (4) and in a second Drapierschritt in this

Free space (6) a placeholder (88) for forming the hollow structure (77) in the fiber semifinished product (4) is used.

Method according to claim 5, wherein inflatable tubes or

Use bottles as placeholders (88)

already inflated in the free space (6) are inserted or

are inserted in the free space (6) in the flaccid state and only then inflated to the final shape.

Method according to claim 3 or 4 or according to claim 5 or 6, wherein in a third draping step by further draping fiber mats (5) the reinforcement body (66) left in the free space (6) or the placeholder (88) inserted therein Fiber mats (5) is enclosed.

The method of claim 7, wherein after the third Drapierschritt the placeholder (88) is removed from the free space (6) again.

Plant (10) for producing a three-dimensional, with a

Reinforcing body (66) reinforced and / or a reinforcing

Hollow structure (77) comprising semifinished fiber product (4) in one

Drapery Station (40), the

at least one draping die (42) for a fiber semifinished product (4) formed from fiber mats (5) and a molding shell (45) having a depression (46) for forming a free space (6) in the fiber material. Semi-finished products (4) includes; characterized in that

a draping segment (44) and / or a reinforcing body (66) and / or a placeholder (88) for forming the hollow structure (77) are temporarily and / or alternately temporarily and / or alternately disposed on a surface (43) of the draping die (42) opposite the depression (46) ) are arranged detachably in the fiber semifinished product (4).

Plant (10) according to claim 9, characterized in that the

Drapierstation (40) a changing device (50) to the full or

semi-automated positioning of the draping segment (44) and / or the reinforcing body (66) and / or the spacer (88) on the

Surface (43) of the Drapierstempels (42) is assigned.

Plant (10) according to claim 9 or 10, characterized in that the Drapiersegment (44) and / or the reinforcing body (66) and / or the placeholder (88) releasably cohesively, non-positively, positively, magnetically and / or mechanically on the surface (43) of the

Drapierstempels (42) are arranged.

Plant (10) according to one of claims 9 to 11, characterized

in that the draping segment (44) is designed corresponding to the depression (46) and / or the reinforcement body (66) or the placeholder (88) corresponding to the free space (6).

Plant (10) according to one of the preceding claims 9 to 12, characterized in that with the recess (46) cooperating holding means (48) are provided which a positionally correct holding in the free space (6) leave the reinforcing body (66) and / or in the free space (6) insert placeholder (88) effect.

14. Plant (10) according to claim 13, characterized in that the

Haltemittel (48) are adapted to pull a vacuum, which fixes the reinforcing body (66) and / or the placeholder (88) in the correct position in the recess (46), in particular during the third Drapierschrittes.

15. Plant (10) according to one of the preceding Claims 9 to 14, characterized in that the surface (43) of the draping die (42) left free of draping segments (44) and / or reinforcing bodies (66) and / or placeholders (88) the upper side (7) of the fiber semifinished product (4) after draping images.