FR3057798A1 - INSTALLATION AND METHOD FOR MANUFACTURING A FIBER-BASED PREFORM - Google Patents

Abstract

An installation (10) for manufacturing a fiber-based preform from a fiber-based, flat material of a fiber-based composite material; a fiber-reinforced composite part may be made from the fiber-based preform by curing a matrix material having been infused into the fiber-based material of the fiber-based preform; the plant comprises a transport device (20) configured to provide continuous transport of the fiber material in a transport direction, and the plant (10) has a forming device (30) configured for, during the continuously transporting the fiber-based material, bending a wing section with respect to a web section of the fiber-based material longitudinally with respect to the transport direction, at a predetermined angle between the web section and wing and the core section, by means of at least one forming element (31,32) along which the fiber-based material is guided while in contact therewith; the invention is characterized in that said at least one forming element (31, 32) is mounted concentrically movable around the fiber-based material, such that a concentric movement of said at least one forming element (31, 32), makes it possible to adjust the angle between the wing section and the web section.

Description

Holder (s): DEUTSCHES ZENTRUM FUR LUFTUND RAUMFAHRT E.V ..

Extension request (s)

Agent (s): PONTET ALLANO & ASSOCIES.

P4) INSTALLATION AND PROCESS FOR THE MANUFACTURE OF A FIBER-BASED PREFORM.

FR 3,057,798 - A1 (c /) The invention relates to an installation (10) for the manufacture of a fiber-based preform from a flat, fiber-based material, from a composite material based on fiber; a fiber-reinforced composite part can be made from the fiber-based preform by curing a matrix material having been infused into the fiber-based material of the fiber-based preform; the installation comprises a transport device (20), configured to ensure continuous transport of the fiber-based material in a transport direction, and the installation (10) has a forming device (30) configured to, during the continuous transport of the fiber-based material, bend a wing section with respect to a core section of the fiber-based material longitudinally with respect to the direction of transport, forming a predetermined angle between the section of wing and the core section, by means of at least one forming element (31, 32) along which the fiber-based material is guided while being in contact therewith; the invention is characterized in that said at least one forming element (31, 32) is mounted to move concentrically around the fiber-based material, so that a concentric movement of said at least one forming element (31, 32), allows to adjust the angle between the wing section and the core section.

Installation and method for manufacturing a fiber-based preform

The invention relates to an installation and a method for manufacturing a fiber-based preform from a flat, fiber-based material, from a fiber-based composite material, from a fiber-based composite part. which can or should be made from the fiber preform, by curing a matrix material having been infused into the fiber material of the fiber preform.

Because of the particularly advantageous property of having, for a relatively low weight, a particularly high rigidity and resistance in at least one direction, the fiber-based composite parts are suitable for a good number of applications. Also, we are using more and more such fiber-based composite parts for load-bearing structures in the automotive, aeronautical and space fields, in order to better exploit the potential of light construction.

Fiber-reinforced composite parts are made from a fiber-based composite material, which generally comprises two essential components:

a) a fiber-based material with reinforcing fibers, and

b) a matrix material.

The matrix material of the fiber-based composite material is introduced by infusion into the fiber-based material of the fiber-based composite material, and is hardened by temperature stress, which leads to the production of an integral part in matrix material and fiber-based material. By the hardening of the matrix material, the fibers of the fiber-based material are forced to maintain their predetermined direction and thus give the part the corresponding properties in the direction of the fibers.

The manufacture of complex parts is very demanding in terms of knowing how to do manual and technical personnel, because the fiber-based material must, according to the requirements, be draped in the corresponding part forming mold, which having regard to the properties anisotropic material based on fibers, can be problematic depending on the complexity of the shape of the part. This relates in particular to the manufacture of three-dimensional profiles, which, depending on the purposes of use, can have curvatures and different profile shapes and geometries over their entire lengthwise extent.

Thus, it is very important for curved profiles, such as Z or C profiles, which are mainly stressed in bending, that the orientation of the profile fibers remains constant along the length of the profile, because otherwise the flexural stress cannot be optimally absorbed by the fibers. In the example of a profile bent in a circular shape, this means that a coordinate system, according to which the orientation of the fibers conforms, would rotate on the part around the center of the circle and predefine another orientation for the fibers at each point on the part. Due to the large peripheral length of the outer wing of the profile, the fiber-based material of the outer wing of the profile must be stretched in the area of the outer wing, and the angle of fibers initially straight between the individual fibers is thus caused to vary.

An assembly for the production of such curved profiles is known for example from document DE 10 2012 101 706 A1 originating from the applicant of this patent application, and the full content of which reference is made here. The assembly comprises a shearing device, having at least two rotating roller bodies, arranged at a distance from each other in the rolling direction and between which the fiber-based material is guided and conveyed, a device for control allowing the peripheral speeds of the roller bodies to be adjusted to different values with the effect of shearing the fibers of the fiber-based material to produce the curvature.

We also know from document DE 10 2008 032 574 A1, an assembly for the manufacture of fiber-reinforced parts, in which a draping device makes it possible to drape the plies based on fibers on a shaping core, by applying a vacuum. This mode of forced forming of fiber-based sheets has the disadvantage of not being able to guarantee a defined and reproducible shearing of the fibers. In addition, due to friction on the forming core during the forced draping of the fiber-based web, the fiber-based material may be damaged, which greatly affects the stability of the subsequent part.

Another disadvantage of such devices for ensuring shearing or forming / draping of fiber-based material is that the shape of the part to be produced is fixedly determined by the arrangement of the installation or the device. In particular during the manufacture of fiber-based profiles, this leads to a construction limited to the cross section of the fiber-based profile, which only allows the manufacture of the profile considered. A modification of the cross section of the profile based on fibers or small adaptations of the geometry of the profile (for example modification of the width of the core or of the wing, modification of the angle between the core and the wing), require substantial modifications to the construction, assuming they are possible in the construction space. This results in high conversion times leading to higher costs per part and lower productivity.

Another problem, in particular of continuously operating installations, as for example known from document DE 10 2012 101 706 A1, resides in the fact that the geometry of the profile of the fiber-based preform to be produced cannot be modified during continuous shearing or during the continuous transport of the fiber material through the installation, because the forming process should be interrupted for adaptation. Parts which include a variation of the basic cross-section (for example from a C-profile to a Z-profile) are not possible with prior art installations.

Also, the object of the present invention is to indicate an improved installation and an improved process for the manufacture of a fiber-based preform, making it possible to modify the geometry or the shape of the cross section of the profile, without constructive modifications to the installation. In addition, the aim of the present invention is to indicate an improved installation and an improved method allowing the manufacture of preforms having a cross section of profile varying along their longitudinal axis (transport axis).

The desired goal is achieved by an installation for the manufacture of a fiber-based preform from a flat, fiber-based material, from a fiber-based composite material, a composite fiber-based part. can be fabricated from the fiber-based preform by curing a matrix material having been infused into the fiber-based material of the fiber-based preform, the installation comprising a transport device configured to provide continuous transport of the fiber-based material in a direction of transport, and the installation having a forming device configured to, during the continuous transport of the fiber-based material, bend a section of wing relative to a section of core of the fiber material longitudinally with respect to the direction of transport, forming a predetermined angle between the wing section and the core section, by means of at least u n forming element along which the fiber-based material is guided by being in contact with it, characterized in that said at least one forming element is mounted movable concentrically around the fiber-based material, in such a way that a concentric movement of said at least one forming element makes it possible to adjust the angle between the wing section and the core section.

In accordance with the invention, an installation is proposed for the manufacture of a fiber-based preform from a flat, fiber-based material, from a fiber-based composite material, a composite part based on fibers which can be made from the fiber preform by curing a matrix material having been infused into the fiber material of the fiber preform. Regarding the fiber-based preform, it is a fiber-based material having been subjected to forming, which has a cross section of predetermined profile, for example an L, C or Z profile. fiber-based preform is in particular a fiber-based material having been subjected to three-dimensional forming.

The fiber-based material can here preferably be a dry fiber-based material, into which a matrix material is infused, during a following process step, and then hardened for the manufacture of the composite part based on fiber. But it is also possible to envisage that the fiber material is a prepreg fiber material (called prepreg), the matrix material already containing the fiber material at the time of forming.

The installation comprises in the present case, in a known manner, a transport device for transporting or conveying the fiber-based material continuously in a transport direction. To this end, the transport device may for example have rollers or cylinders, on which the fiber-based material is guided and rests by being in contact with them, so that an adhesion connection between the material to be fiber base and elements of the transport device produces a transport of the fiber material.

The installation further comprises a forming device with which the flat, fiber-based material is formed to the predetermined profile shape of the fiber-based preform to be manufactured. For this purpose, the forming device comprises at least one forming element along which the fiber-based material is guided and led while being in contact with it, in order to ensure the forming of the fiber-based material , flat, in the desired fiber-based preform. The forming element of the forming device is here configured and arranged constructively in the installation, so as to bend a wing section relative to a core section of the fiber-based material longitudinally relative to the direction of transport, forming a predetermined angle between the wing section and the core section. The wing section here designates an end zone of the fiber-based material, flat, in particular elongated, and is adjacent, on the side opposite to the side of the end, to a core section of the preform based on fibers. On this occasion between the flat core section and the flat wing section, an angle is formed which, for example in the case of a conventional C or L profile, is approximately 90 degrees.

According to the invention, it is now provided that said at least one forming element of the forming device is mounted to move concentrically around the fiber-based material, so that a concentric movement of said at least one forming element allows variable adjustment of the angle between the wing section and the web section.

A concentric movement of the forming element here designates a circular movement on a circular path, which takes place around a center or point of rotation located, starting from the forming element, in the direction of the material based on fibers. The center of rotation of the concentric movement of said at least one forming element can here also be considered to be an axis of rotation, which is oriented axially or coaxially with the direction of transport with respect to the position in the region of the element of forming.

The concentric movement of the forming element, this concentric movement taking place on a circumferential circular path around the fiber-based material, makes it possible to adjust the angle between the wing section and the core section, by displacement of the forming element on the circular path. This varies the contact surface on which the fiber material rests on the forming element while being in contact with it, in order to bend the wing section relative to the rest of the flat fiber material. , in particular with respect to the core section, so that by such a variation in the contact surface with respect to the core section, this effectively makes it possible also to adjust the angle between the section of wing to be bent and the section of soul remaining.

It is thus possible to adjust the installation in a simple, fast and variable manner for different cross sections of profile, without having to make constructive modifications to the installation. On the contrary, the angle between the wing section and the core section can be variably adjusted, manually or automatically using a control device, making it possible to manufacture cross sections of any profile at using a single installation. The reconversion times of the installation are thus drastically reduced, allowing increased productivity of the parts and thus reducing the costs of the part.

Furthermore, it becomes possible, with such an installation, by a concentric movement of said at least one forming element, to vary, during the continuous transport of the material based on flat fibers, in particular elongated, the angle between the section wing and the core section, which makes it possible to manufacture preforms based on elongated fibers, which have along their entire length, different angles between the wing section and the core section. In such an installation it is even possible, for one and the same fiber-based preform, to vary the base cross-section, so that the fiber-based preform has for example at one end a C-profile, which varies continuously over the length of the fiber-based preform, for example to form a Z-shaped profile, so that at the second opposite end of the fiber-based preform, the cross section then corresponds to that of a Z-shaped profile. Currently, such complex fiber-based preforms cannot be produced continuously with the installations of the prior art.

For this purpose, it is for example conceivable that the installation comprises a control device connected to an actuator for concentrically moving the forming element, the control device being configured so as to control the actuator, for the execution of the concentric movement. The actuator is on this occasion controlled using the control device so that the forming element performs a concentric movement, which corresponds to a predetermined variation of angle between the wing section and the core section. . The speed of movement here depends in particular on the speed of transport and the angle variation over the length of the fiber-based preform.

According to an advantageous embodiment, the forming device has a guide system having at least one curved guide section of circular shape, which is arranged partially peripherally around the wing section of the base material. fibers, and on which said at least one forming element is mounted to move concentrically. The guide system can here, in the guide section, for example be a rail system on which the forming element is movably mounted so that it can be moved along the curved guide section, over a defined arc by the circular curvature guide section. This imposes on the forming element a concentric circular movement making it possible to adjust the angle between the wing section and the core section.

The circularly curved guide section of the guide system is not necessarily arranged completely circumferentially around the whole of the fiber-based material, but may for example have a semicircle shape or even less a semicircle or more than a semicircle.

According to another advantageous embodiment, the forming element described above is a first forming element, which is provided for bending a first wing section relative to the core section. In addition to said at least one first forming element, the forming device has at least one second forming element along which the fiber-based material is also guided while being in contact with it, and which is configured to bend a second section. wing with respect to the core section of the fiber-based material, longitudinally with respect to the direction of transport, forming a predetermined angle between the second wing section and the core section provided between the first section d wing and the second wing section opposite the first wing section. The second forming element is also mounted to move concentrically around the fiber-based material so that a concentric movement of said at least one second forming element makes it possible to adjust the angle between the second section of wing and the section d 'soul.

It is thus possible to manufacture a fiber-based preform with a profile cross section in which is provided centrally, a core section from which is bent, in the direction of a first end section, a first wing section, and towards a second end section, a second wing section, using the forming elements. Both the forming element for the first wing section and the forming element for the second wing section are here mounted movable so that they can be moved concentrically around the fiber material, allowing thus individually adjust the angle between the first wing section and the web section and respectively the angle between the second wing section and the web section.

Advantageously, a guide system is provided which, in addition to the first circularly curved guide section, has at least one second circularly curved guide section, which is also partially arranged around the second section. wing of the fiber-based material, and on which said at least one second forming element is movably mounted so that a movement of said at least one second forming element along the second curved guide section of the guide system, produce the concentric movement of said at least one second forming element, to adjust the angle between the second wing section and the core section.

In a particularly advantageous embodiment, the guide system comprises a guide frame on which are mounted the first and / or the second circularly curved guide section, so that the first and / or the second section of curved guide of circular shape can be moved in translation relative to the fiber-based material. The first and / or the second circularly curved guide section are here mounted movable relative to the fiber-based material so that a relative movement of the first and / or the second guide section allows the width to be adjusted. of the core section. The translational movement of the respective guide section is preferably carried out transversely to the direction of transport, so that the curved guide section can be moved in the direction of the fiber-based material or in a direction s' away from fiber-based material. As the forming elements are arranged on the curved guide elements, a translational movement of the curved guide elements in the direction of the fiber-based material results in enlarging the corresponding wing section and reducing the core section. Consequently, a translational movement of the curved guide section in a direction away from the fiber-based material leads to a reduction in the corresponding wing section and to an enlargement of the web section.

If the two curved guide sections are arranged movable in translation on the guide frame, each wing section can be adjusted individually as to its width, without this requiring constructive modifications to the installation.

It turns out to be particularly advantageous for at least one of the forming elements to be mounted mobile around the fiber-based material, concentrically at a point of rotation or fixed center, and it is more particularly advantageous that the point of rotation of the The respective forming element is located inside the fiber material. Consequently, the laminating zone of the fiber-based material, that is to say the transition from the core section to the respective wing section, is always in the same place, which particularly protects the material.

In another advantageous embodiment, at least one of the forming elements is a pair of rollers having two rollers rotating in respectively opposite directions, between which the fiber-based material can be guided and conveyed. It is in this case conceivable that one of the rollers or the two rollers of such a pair of rollers, are driven, so that such a pair of rollers simultaneously constitutes an integral part of a transport device for transporting the fiber-based material.

Furthermore, it is particularly advantageous to provide a shearing device, designed to ensure shearing of the fibers of the fiber-based material to form a curvature in the fiber-based preform to be manufactured. Such a shearing device can for example be of a configuration such as that provided for in document DE 10 2012 101 706 A1; we will refer to all of the content it discloses. It is thus in particular conceivable to provide, in addition to the pair of rollers, constituting a forming element, another pair of rollers, located at a distance from the pair of rollers constituting the forming element, different peripheral speeds being adjusted respectively. on the rollers of the pairs of rollers, so that the fiber material undergoes shearing between the pairs of rollers. Such an installation makes it possible not only to vary in any way the cross section of the fiber-based preform, but also to impart a defined and automated curvature to the fiber-based preform, so that it is possible to make very complex profiles as a fiber-based preform.

In accordance with the invention, the aim sought is also achieved by a process for the manufacture of a fiber-based preform from a flat, fiber-based material, from a fiber-based composite material, a fiber-based composite part can be made from the fiber-based preform by curing a matrix material having been infused into the fiber-based material of the fiber-based preform, the fiber-based material fibers being continuously transported through an installation by means of a transport device, the method comprising the steps consisting in:

bend a wing section with respect to a core section of the fiber-based material, by forming a predetermined angle between the wing section and the core section, by means of a forming member of a installation forming device, characterized by concentrically moving the forming element around the fiber-based material so as to thereby adjust the angle between the wing section and the core section.

Advantageously, the method is characterized by an operation consisting in bending a second section of wing relative to the core section of the fiber-based material, longitudinally relative to the direction of transport, by forming a predetermined angle between the second wing section and the core section provided between the first wing section and the second wing section opposite the first wing section, by means of a second forming element of the forming device, the second forming element also being moved concentrically around the fiber material so as to adjust the angle between the second wing section and the core section.

In an advantageous embodiment, the first and / or the second forming element are relatively displaced relative to each other, without taking concentric movement into account, so as to adjust the width of the web section by said movement relative displacement of the forming elements relative to each other.

Advantageously, within the framework of the process, an installation for the preparation of the fiber-based preform is prepared and made available, the installation being an installation in accordance with the invention, where appropriate with one or more of the developments. mentioned above.

The invention will be explained, by way of example, with reference to the appended figures. These show:

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5 a perspective representation according to the invention;

a configuration of the installation for narrow-core C profiles;

a configuration of the installation for wide-core C profiles;

a configuration of the installation for L-shaped profiles;

a configuration of the installation for Z-profiles.

of the installation the manufacture of the manufacture of the manufacture of the manufacture of

FIG. 1 shows in perspective a detail of the installation 10 for the manufacture of a fiber-based preform from a flat, fiber-based material, from a fiber-based composite material. The flat fiber material is here brought to the installation 10 from a reserve store of fiber material (not shown), and is transported or conveyed in a transport direction by a transport device 20 The direction of transport of the transport device 20 is here, because of the perspective representation, of an orientation such that it leaves the observation plane obliquely.

The transport device 20 comprises a pair of rollers 21 consisting of two rollers 22a and 22b. The rollers 22a and 22b of the pair of rollers 21 are in this case arranged so that the flat, fiber-based material can be guided and conveyed between the two rollers 22a and 22b. The two rollers 22a and 22b each rotate in opposite directions, one of the rollers or even the two rollers can be driven and thus actively transport or advance the fiber material in the direction of transport.

In the embodiment of Figure 1, the lower roller 22b of the pair of rollers 21 is shorter than the upper roller 22a in terms of their length, to allow also to produce profiles having a narrow core. However, it is also conceivable to shorten the upper roller 22a as regards its axial extent, to allow for example the manufacture of Z-profiles with a narrow core.

The installation 10 also includes the forming device according to the invention, which has two forming elements 31 and 32, configured to allow each to bend a wing section relative to a core section of the base material. fibers longitudinally with respect to the direction of transport, forming a predetermined angle between the respective wing section and the core section. The forming elements 31 and 32 of the forming device 30 are, in the embodiment of FIG. 1, produced in the form of pairs of rolling bodies, so that each forming element 31 comprises two rollers or rolling bodies between which the fiber-based material is guided, more precisely the respective wing section of the fiber-based material. As can be seen in the current configuration of the embodiment of Figure 1, between the rolling surface of the rollers of the forming elements 31 and 31 and the rolling surface of the rollers of the transport device 20, is formed a angle, which leads to the respective angle between the core section and the wing section.

The forming elements 31 and 32 are arranged on a guide system

33, which comprises two guide sections 34 and 35 with curvature of circular shape. On the first curved guide section 34 is arranged the first forming element 31, while on the second guide section 35 with circular curvature, is arranged the second forming element 32. The forming elements 31 and 32 are in this case mounted mobile on their guide sections 34 and 35 with curvature of circular shape, so that during a movement along the guide section

34, 35 respectively with a circular curvature, the respective forming element 31, 32 performs a concentric movement, the center or point of rotation of which is located inside the circle formed by the two guide sections 34 and 35.

The concentric movement of the forming elements 31, 32 makes it possible to vary the angle between the wing section and the core section, because this movement makes it possible to vary the angle between the rolling surfaces of the rollers of the device transport 20 and the rolling surfaces of the rollers of the respective forming element 31, 32.

The guide sections 34, 35 with curvature of circular shape, are in this case arranged on a guide frame 36, so that the guide sections with curvature of circular shape can be moved in translation. The direction of the translational movement of the curved forming sections 34, 35, on the guide frame 36, is here parallel to the running surface of the transport device 20, which in the embodiment of FIG. 1 leads to the fact that the direction of the translational movement lies in the plane of the core section. It therefore proves in principle advantageous that the installation 10 is configured so that the guide sections 34, 35 with circular curvature are arranged movable in translation on the guide frame in such a way that the direction of the translational movement of the sections guide with circular curvature is located in the plane of the core section, which makes it possible to vary the width of the core section (see FIG. 3).

In the embodiment of Figure 1, the forming elements 31, 32 are arranged on their respective guide sections 34, 35 being able to be fixed each on its guide section 34, 35 with respective circular curvature, by the through a quick release system. By loosening the quick clamping system 37, the respective forming element 31, 32 can be moved concentrically on the guide section 34, 35 with respective circular curvature, and can again be fixed there in the desired position.

Thus, without modifying the construction of the entire installation, it is possible to adjust the angle between the section of the web and the section of the wing, which makes it possible to significantly reduce the conversion time and increase the productivity in parts. manufactured. The whole installation thus becomes more profitable.

It is however also conceivable to arrange the forming elements 31, 32 on their respective guide sections 34, 35 so as to be displaceable therein concentrically, by means of an adjustment motor (actuator), the adjustment motors being controlled. using a control unit (not shown), so that the forming element 31, 32 respectively considered performs a concentric movement. The desired angle between wing section and web section can thus be adjusted automatically by the installation.

The automated embodiment offers the other advantage of making it possible to vary the angle even during the forming process, and thus to manufacture fiber-based preforms whose profiles have between wing section and core section a angle which varies along the entire extent in length.

Furthermore, the guide sections 34, 35 with circular curvature can also be mounted on the guide frame 36 by means of adjustment motors, so that it is also possible to adjust, automatically by the unit control, the width of the core section, thanks to the translational movement of the guide sections 34, 35 with circular curvature. Again, it is conceivable that the control unit performs, during the continuous transport of the fiber-based material and during the continuous forming of the fiber-based material, a translational movement of the guide sections 34, 35 to circular curvature, so as to vary the core width along the entire length of the fiber-based preform.

Figure 2 shows in plan view the installation 10 in a configuration for the manufacture of C-shaped profiles with a relatively narrow web section. The two forming elements 31, 32 have been displaced concentrically along their guide section 34, 35 with respective circular curvature, so that, to within tolerances, the rolling surfaces of the rollers of the forming elements 31, 32 respective extend in parallel and further define a right angle to the rolling surfaces of the rollers of the transport device 20. It is thus possible to manufacture C-shaped profiles from a fiber-based material, flat, in which the angle between wing section and web section is of a value substantially equal to 90 degrees.

The fiber-based preform 40 to be manufactured in FIG. 2 has a first section of wing 41, formed by the first forming element 31, while the second section of wing 42 is formed by the second forming element 32. Between the first wing section 41 and the second wing section 42, there is the core section 43, which in the embodiment of FIG. 2 is narrow.

FIG. 3 shows a configuration where the guide sections 34, 35 with circular curvature have been spaced from one another by displacement in translation, which has increased the width of the core section 43. As shown in FIG. FIG. 3 such a configuration makes it possible to manufacture C-shaped profiles having a core section 43 of great width with respect to its wing sections 41, 42.

FIG. 4 shows an exemplary embodiment of a configuration making it possible to manufacture L-shaped profiles. In an L-shaped profile, a section of wing is bent at an angle greater than 0 relative to the section of web, while l The other wing section, opposite to the first, is bent at an angle of 0 degrees, so that the core section and this wing section are parallel. In the embodiment of Figure 4, the first wing section 41 almost forms an extension of the core section 43 since the angle is 0 degrees. For this purpose, the first forming element 31 has been moved concentrically so that the rolling surfaces of the rollers of the first forming element 31 are parallel to the rollers of the transport device 20. On the other hand, the second forming element 32 bends the second wing section 42 at an angle of 90 degrees relative to the core section 43, so that this results in a conventional L-shaped profile.

FIG. 5 finally shows a configuration of a Z-profile, in which between the first section of wing 41 and the section of web 43, an angle of 270 degrees has been adjusted, while between the second section d wing 42 and the core section 43 is applied at an angle of 90 degrees.

List of benchmarks

10 installation 20 transport device 5 21 pair of rollers 22a, 22b 30 transport device rollers forming device 31 first forming element 32 second forming element 10 33 guidance system 34 first guide section with circular curvature 35 second circularly curved guide section 36 guide frame 37 quick clamping device 15 40 fiber-based preform 41 first wing section 42 second wing section 43 stretch of soul

Claims (13)

Claims 1. Installation (10) for manufacturing a fiber-based preform (40) from a flat, fiber-based material, from a composite-based material 5 of fibers, a fiber composite part can be made from the fiber preform (40) by curing a matrix material having been infused into the fiber material of the fiber preform fibers (40), the installation (10) comprising a transport device (20), configured to ensure continuous transport of the material to be 10 fiber base in one direction of transport, and the installation (10) having a forming device (30) configured to, during the continuous transport of the fiber material, bend a section of wing (41, 42 ) with respect to a core section (43) of the fiber material, longitudinally with respect to the direction of transport, forming a 15 predetermined angle between the wing section (41, 42) and the core section (43), by means of at least one forming element (31,32) along which the fiber-based material is guided by being in contact with it, characterized in that said at least one forming element (31, 32) is mounted movable concentrically around the fiber-based material, 20 such that a concentric movement of said at least one forming element (31, 32) makes it possible to adjust the angle between the wing section (41, 42) and the core section (43). 2. Installation (10) according to claim 1, characterized in that the 25 forming device (30) has a guide system (33) having at least one curved guide section of circular shape, which is arranged partially peripherally around the wing section (41, 42) of the material to be fiber base, and on which said at least one forming element (31, 32) is movably mounted so that a movement of said at 30 at least one forming element (31, 32) along the curved guide section of the guide system (33) produces the concentric movement of said at least one forming element (31, 32), for adjusting the angle between the section wing (41, 42) and the core section (43). 3. Installation (10) according to claim 1 or 2, characterized in that, in addition to said at least one first forming element (31) for bending the first wing section (41), the forming device (30) has at least one second forming element (32) along which the fiber-based material is guided while being in contact with it, and which is configured to bend a second section of wing (42) relative to the section d core (43) of the fiber-based material longitudinally relative to the direction of transport, forming a predetermined angle between the second wing section (42) and the core section (43) provided between the first section d wing (41) and the second wing section (42) opposite to the first wing section (41), said at least one second forming element (32) being mounted to move concentrically around the fiber-based material so such as a concentric movement of said at least one second forming element e (32) allows the angle between the second wing section (42) and the web section (43) to be adjusted. 4. Installation (10) according to claim 2 and 3, characterized in that, in addition to the first guide section with curvature of circular shape, the guide system (33) has at least one second guide section with curvature of circular shape, arranged partially peripherally around the second wing section (42) of the fiber-based material, and on which the at least one second forming element (32) is movably mounted so that a movement of said at least a second forming element (32) along the second curved guide section of the guide system (33) produces the concentric movement of said at least one second forming member (32), for adjusting the angle between the second section of wing (42) and the core section (43). 5. Installation (10) according to claim 4, characterized in that the guide system (33) comprises a guide frame (36) on which are mounted the first and / or the second guide section with circular curvature, so as to be movable relative to the fiber-based material so that a relative movement of the first and second guide sections allows the width of the web section (43) to be adjusted. 6. Installation (10) according to one of the preceding claims, characterized in that at least one of the forming elements (31, 32) is mounted movable around the fiber-based material, concentrically at a fixed point of rotation . 7. Installation (10) according to one of the preceding claims, characterized in that at least one of the forming elements 31, 32) is mounted movable concentrically around the fiber-based material so that the point of rotation of the forming element (31, 32) respectively considered is located inside the fiber-based material. 8. Installation (10) according to one of the preceding claims, characterized in that at least one of the forming elements (31, 32) is a pair of rollers having two rollers rotating in opposite directions respectively, and between which can be guided and routed the fiber material. 9. Installation (10) according to one of the preceding claims, characterized in that the installation (10) has a shearing device designed to shear the fibers of the fiber-based material, to form a curvature in the preform based on fibers (40) to be manufactured. 10. Method for manufacturing a fiber-based preform (40) from a flat, fiber-based material, from a fiber-based composite material, a fiber-based composite part can be manufactured from the fiber preform (40) by curing a matrix material having been infused into the fiber material of the fiber preform (40), the fiber material being transported in continuous through an installation (10) by means of a transport device (20), the method comprising the steps consisting in: bending a wing section (41, 42) with respect to a core section (43) of the fiber-based material, forming a predetermined angle between the wing section (41, 42) and the section of core (43), by means of a forming element (31, 32) of a forming device (30) of the installation (10), characterized by concentrically moving the forming element (31, 32) around of fiber-based material so as to adjust the angle between the wing section (41, 42) and the core section (43). 11. Method according to claim 10, characterized by: bending a second section of wing (42) relative to the core section (43) of the fiber-based material longitudinally relative to the direction of transport, forming an angle predetermined between the second wing section (42) and the web section (43) provided between the first wing section and the second wing section (42) opposite the first wing section (41), by means of a second forming element (32) of the forming device (30), the second forming element (32) also being moved concentrically around the fiber material so as to adjust the angle between the second 15 wing section (42) and the core section (43). 12. Method according to claim 11, characterized in that the first and / or the second forming element (32) are relatively displaced relative to the other, without taking into account a 20 concentric movement, so as to adjust the width of the core section (43) by said movement of relative movement of the forming elements (31, 32) relative to each other. 13. Method according to one of claims 10 to 12, characterized in that 25 an installation (10) according to one of claims 1 to 9 is prepared and made available for the manufacture of the fiber-based preform (40). A / δ f igure A 2/5