DE102016120197A1 - Plant and process for producing a fiber preform - Google Patents

Abstract

The invention relates to a system for producing a Faserpreform from a flat fiber material of a fiber composite material, wherein from the Faserpreform by curing a infused into the fiber material of the Faserpreform matrix material, a fiber composite component can be produced, wherein the system has a conveyor, which for continuously conveying the fiber material in a Conveying device is formed, and wherein the system has a forming device, which during the continuous feeding of the fiber material by means of at least one forming element, along which the fiber material is guided contact, for bending an Gurtabschnittes of a web portion of the fiber material along the conveying direction to form a predetermined angle between Belt section and web portion is formed, characterized in that the at least one forming element is mounted so as to be movable concentrically around the fiber material, that by e Ine concentric movement of the at least one deformation element of the angle between the belt portion and the web portion is adjustable.

Description

The invention relates to a system and a method for producing a Faserpreform from a flat fiber material of a fiber composite material, wherein from the Faserpreform by curing a infused into the fiber material of the Faserpreform matrix material, a fiber composite component is to be produced or to be produced.

Due to the particularly advantageous property, with a relatively low weight in at least one direction to have a very high rigidity and strength, fiber composite components are suitable for a variety of applications. In this case, such fiber composite components are increasingly used for load-bearing structures in the automotive, aerospace and space sector, so as to better exploit the lightweight potential.

1. a) Ein Fasermaterial mit Verstärkungsfasern und
2. b) Ein Matrixmaterial.

Fiber composite components are made of a fiber composite material, wherein a fiber composite material usually has two essential components:

1. a) A fiber material with reinforcing fibers and
2. b) A matrix material.

The matrix material of the fiber composite material is thereby infused into the fiber material of the fiber composite material and cured by applying temperature, whereby an integral component of matrix material and fiber material is formed. By curing the matrix material, the fibers of the fiber material are forced in their predetermined direction and thus give the component in the fiber direction the corresponding properties.

The production of more complex components places high demands on the skilled craftsmanship of the employees, since the fiber material has to be draped into the corresponding component shape depending on requirements, which can be problematic in view of the anisotropic properties of the fiber material depending on the complexity of the component shape. This relates in particular to the production of three-dimensional profiles which, depending on the application, may have curvatures and different profile shapes and geometries over the entire length.

Thus, it is very important for curved profiles, such as Z or C profiles, that are primarily subjected to bending, that the orientation of the fibers remain constant along the length of the profile, otherwise the bending stress can not be optimally absorbed by the fibers. Using the example of a circularly curved profile, this means that a coordinate system according to which the fiber orientation is directed would rotate on the component around the center of the circle and would give the fibers a different orientation at each point on the component. Due to the larger circumferential length of the outer belt of the profile, the fiber material in the region of the outer belt has to be stretched and thus the original right angle fiber angle between the individual fibers has to be changed.

An apparatus for producing such curved profiles is for example from DE 10 2012 101 706 A1 which originates from the applicant of the present patent application and the disclosure of which is hereby incorporated by reference in its entirety. The device has a displacement device which has at least two rotating, spaced apart in the rolling direction rolling body, between which the fiber material is guided along, wherein by a control device different rotational speeds of the rolling elements are adjustable, causing a shearing of the fibers of the fiber material to form the curvature becomes.

From the DE 10 2008 032 574 A1 Furthermore, an apparatus for producing fiber-reinforced components is known, in which a draping device is provided on a base frame, with which the fiber layers are drapeable by attaching a vacuum to the mandrel. However, this type of forced deformation of the fiber fabric has the disadvantage that a defined and reproducible shearing of the fiber can not be guaranteed. In addition, due to friction on the mandrel in the forced drape of the fiber fabric may cause the fiber material is damaged, which greatly affects the stability of the later component.

Another disadvantage of such devices for shearing or forming / draping fiber material is that the component shape to be produced is determined by the arrangement of the system or the device. Especially in the production of fiber profiles creates a limited to the cross section of the fiber profile construction, which only allows the production of the respective profile. For a change in the cross section of the fiber profile or small adjustments of the profile geometry (for example, changes in the web or web width, changing the angle between the web and belt) costly changes to the design are necessary if they are even possible in the existing space. This results in high set-up times, which lead to higher component costs and lower component throughput.

Another problem in particular continuously run systems, such as from the DE 10 2012 101 706 A1 known, is the fact that the profile geometry of the Faserpreform to be produced can not be changed during the continuous Verscheren or during the continuous conveying of the fiber material through the system, since the forming process for the adjustment would have to be interrupted. Components that include a change in the base cross-section (for example, from a C-profile to a Z-profile) along its longitudinal axis are not possible with the systems of the prior art.

It is therefore an object of the present invention to provide an improved system and an improved method for producing a Faserpreform, in which the geometry or the shape of the profile cross-section can be changed without structural changes in the system. It is also an object of the present invention to provide an improved system or an improved method with which it is possible to produce fiber preforms which have a variable profile cross-section along their longitudinal axis (conveying axis).

The object is achieved with the system according to claim 1 and the method according to claim 10 according to the invention.

According to claim 1, a plant for producing a Faserpreform of a flat fiber material of a fiber composite material is proposed, wherein from the Faserpreform by curing a infused into the fiber material of the Faserpreform matrix material, a fiber composite component can be produced. The Faserpreform is a reshaped fiber material having a predetermined profile cross section, for example, an L, C, or Z profile. In particular, the Faserpreform is a three-dimensionally transformed fiber material.

The fiber material may preferably be dry fiber material, which is infused with matrix material in a later process step and then cured to produce the fiber composite component. It is also conceivable that the fiber material is pre-impregnated fiber material (so-called prepregs), wherein the matrix material already contains the fiber material at the time of forming.

The plant has generically a conveyor on to continuously transport the fiber material in a conveying direction or to promote. For this purpose, the conveyor may for example comprise rollers or rollers on which the fiber material is guided along contact or rests, so that a conveying of the fiber material is effected by a frictional connection between the fiber material and elements of the conveyor.

The system further comprises a forming device with which the flat fiber material is formed into the predetermined profile shape of the fiber preform to be produced. For this purpose, the forming device has at least one forming element, on which the fiber material is guided along contact-related, in order to transform the flat fiber material into the Faserpreform. The forming element of the forming device is designed and structurally arranged in the system such that a belt section is angled away from a web section of the fiber material along the conveying direction to form a predetermined angle between belt section and web section. In this case, the belt section designates an edge region of the flat, in particular elongate fiber material and adjoins a web section of the fiber preform on an opposite side of the edge side. In this case, an angle is formed between the flat web portion and the flat belt portion, which has approximately 90 degrees, for example, in a classic C-profile or L-profile.

According to the invention, it is now provided that the at least one forming element of the forming device is mounted so as to be movable concentrically around the fiber material so that the angle between the belt section and the web section can be variably adjusted by a concentric movement of the at least one forming element.

In this case, a concentric movement of the deformation element is understood as meaning a circular movement on a circular path which takes place about a center or pivot point which, starting from the deformation element, lies in the direction of the fiber material. The fulcrum of the concentric movement of the at least one deformation element can also be understood as an axis of rotation, which is aligned axially or coaxially to the conveying direction with respect to the position in the region of the Umformelementes.

Due to the concentric movement of the forming element, wherein the concentric movement takes place on a circular path which is running around the fiber material, the angle between the belt portion and the web portion can be adjusted, in which the forming element is moved in this circular path. In this case, the contact surface on which the fiber material contacts the forming element in contact with the bending of the belt portion with respect to the remaining planar fiber material, in particular with respect to the web portion, so by such a change in the contact surface with respect to the web portion also just the angle can be adjusted between the belt portion to be bent and the remaining web portion.

This makes it possible, time-saving and variable for different profile cross-sections to adjust the system easily, without having to be changed constructively. On the contrary, the angle between the belt section and the web section can be variably adjusted manually or automatically with the aid of a control device, so that any profile cross sections can be produced with a single system. The set-up times of the system are thereby drastically shortened, whereby a higher component throughput can be achieved and the component costs can thus be reduced.

Furthermore, it becomes possible with such a system, during the continuous conveying of the flat, in particular elongated fiber material by concentric movement of the at least one deformation element to change the angle between the belt portion and web portion, whereby elongated Faserpreforms can be produced over their entire length have different angles between strap portion and web portion. In such a system, it is even possible to change in a single Faserpreform the base cross section, so that, for example, at one end the Faserpreform has a C-profile, which changes continuously over the length of the Faserpreform away in an example Z-profile, so on the opposite second end of Faserpreform the cross section then corresponds to a Z-profile. Such complex Faserpreforms of fiber composite components can be realized with systems of the prior art currently so not continuously.

For this purpose, it is conceivable, for example, that the system has a control device which is connected to an actuator for concentrically moving the forming element, wherein the control device is set up such that it controls the actuator for carrying out a concentric movement. The actuator is controlled with the aid of the control device so that the forming element performs a concentric movement, which corresponds to a predetermined angle change between the belt portion and web portion. The speed of the movement depends in particular on the conveying speed and the angle change over the length of the Faserpreform.

In an advantageous embodiment, the forming device has a guide system which has at least one circularly curved guide section, which is arranged partially circumferentially around the belt section of the fiber material and on which the at least one forming element is mounted concentrically movable. The guide system can be in the guide section, for example, a rail system on which the forming element is movably mounted so that it can be moved along the curved guide portion on a circular arc defined by the circular guide section. As a result, the forming element is given a concentric circular motion, so that the angle between the belt portion and the web portion can be adjusted.

The circularly curved guide section of the guide system does not necessarily have to be circumferential around the entire fiber material, but may for example be semicircular or less or more than semicircular.

In a further advantageous embodiment, the above-described forming element is a first forming element, which is provided for bending a first belt portion of the web portion. The forming device has in addition to this at least one forming element at least one further second forming element, on which the fiber material is also guided along contact and for bending a second Gurtabschnittes, which is opposite to the first belt portion and between which the web portion is provided, from the web portion of the fiber material along the Conveying direction is formed to form a predetermined angle between the second belt portion and the web portion. The second forming element is also movably mounted in such a way that it can be moved concentrically around the fiber material so that the angle between the second belt section and the web section can be adjusted by a concentric movement of the at least second forming element.

This makes it possible to produce a Faserpreform with a profile cross-section, in the middle of a web portion is provided, from which in the direction of a first edge portion, a first Gurtabschnitt and in the direction of a second edge portion, a second Gurtabschnitt is formed by bending with the help of forming elements. Both the forming element for the first belt section and the forming element for the second belt section are movably mounted so that they are concentrically movable around the fiber material, so each individually the angle between the first belt portion and the web portion and the angle between the second belt portion and the web portion is adjustable.

Advantageously, a guide system is provided which, in addition to the first circular curved guide portion has at least a second circular curved guide portion, which is also partially circumferentially arranged around the second belt portion of the fiber material and on which the at least one second forming element is movably mounted such that by a Movement of the at least one second deformation element along the second curved guide portion of the guide system, the concentric movement of the at least one second deformation element is effected to adjust the angle between the second belt portion and the web portion.

In a particularly advantageous embodiment, the guide system has a guide frame, on which the first and / or the second circularly curved guide section is mounted, so that the first and / or the second circularly curved guide section can be moved translationally relative to the fiber material. The first and / or the second circularly curved guide section are mounted so movable relative to the fiber material, that the width of the web portion is adjustable by a relative movement of the first and / or second guide portion. The translational movement of the respective guide section is preferably transverse to the conveying direction, so that the curved guide section can be moved in the direction of the fiber material or in the direction away from the fiber material. Since the forming elements are arranged on the curved guide elements, a translational movement of the curved guide elements in the direction of the fiber material causes the corresponding belt section to be enlarged and the web section to be reduced. Consequently, a translational movement of the bent guide portion away from the fiber material leads to a reduction of the corresponding belt portion and to an enlargement of the web portion.

If both curved guide sections are arranged to be translationally movable on the guide frame, then each belt section can be individually adjusted in its width, without the system having to be structurally changed for this purpose.

Particularly favorable if at least one of the forming elements is moved concentrically around a fixed pivot point or center point movable around the fiber material, wherein it is particularly advantageous if the fulcrum of the respective forming element is within the fiber material. As a result, the rolling range of the fiber material, i. the transition from web section to the respective belt section, with an angle change always in the same place, which is particularly gentle on materials.

In a further advantageous embodiment, at least one of the forming elements is a pair of rolls, which has two respective rollers rotating in opposite directions to one another, between which the fiber material can be passed. It is conceivable that one or both rollers of such a pair of rollers are driven, so that such a pair of rollers is also part of a conveyor for conveying the fiber material at the same time.

Furthermore, it is particularly advantageous if a displacement device is provided, which is designed for shearing the fibers of the fiber material to form a curvature in the fiber preform to be produced. Such a displacement device can for example be designed as shown in the DE 10 2012 101 706 A1 is intended, the content of which is fully referenced. Thus, it is particularly conceivable that in addition to the pair of rolls which forms a forming element, a further pair of rolls is provided, which is arranged spaced apart from the pair of rolls as forming element, wherein on the rolls of the rolling pairs each different rotational speeds are set, so that the fiber material between the Roll pairs is pardoned. With such a system, not only can the cross section of the fiber preform be changed as desired, but it is also possible to define and automatically introduce a curvature into the fiber preform, so that very complex profiles can be produced as a fiber preform.

• 1 - perspektivische Darstellung der erfindungsgemäßen Anlage;
• 2 - Konfiguration der Anlage zur Fertigung von C-Profilen mit schmalem Steg;
• 3 - Konfiguration der Anlage für die Fertigung von C-Profilen mit breitem Steg;
• 4 - Konfiguration der Anlage zur Fertigung von L-Profilen;
• 5 - Konfiguration der Anlage zur Herstellung von Z-Profilen.

The invention will be explained by way of example with reference to the attached figures. Show it:

• 1 - Perspective view of the system according to the invention;
• 2 - Configuration of the plant for the production of C-profiles with narrow web;
• 3 - Configuration of the plant for the production of C-sections with wide web;
• 4 - Configuration of the plant for the production of L-profiles;
• 5 - Configuration of the plant for the production of Z-profiles.

1 shows a perspective view of a section of the system 10 for producing a Faserpreform from a flat fiber material of a fiber composite material. The flat fiber material is the plant 10 supplied via a fiber material storage (not shown) and by the conveyor 20 promoted in a conveying direction. The conveying direction of the conveyor 20 is due to the perspective view such that it leads obliquely out of the viewing plane.

The conveyor 20 has a pair of rolls 21 on, which consists of two rollers 22a and 22b consists. The rollers 22a and 22b of the rolling pair 21 are arranged so that the flat fiber material between the two rollers 22a and 22b can be passed. The two rollers 22a and 22b rotate in the opposite direction to each opposite roller, wherein one of the rollers or both rollers can be driven and thus actively promote or push the fiber material in the conveying direction.

In the embodiment of 1 is the bottom roller 22b of the rolling element pair 21 shorter in length than the upper roller 22a so as to be able to produce profiles with a narrow web. It is also conceivable that the upper roller 22a is also shortened in terms of their axial extent, for example, to be able to produce Z-profiles with a narrow web.

The attachment 10 further comprises the forming device according to the invention, the two forming elements 31 and 32 each formed to bend a Gurtabschnitts of a web portion of the fiber material along the conveying direction to form a predetermined angle between the respective belt portion and the web portion. The forming elements 31 and 32 the forming device 30 are in the embodiment of 1 formed in the form of pairs of rolling elements, so that each forming element 31 has two rolls or rolling elements, between which the fiber material, more specifically the respective belt portion of the fiber material is passed. As in the embodiment of 1 seen in the current configuration, is between the tread of the rollers of the forming elements 31 and 32 with respect to the running surface of the rollers of the conveyor 20 formed an angle which leads to the respective angle between web portion and belt portion.

The forming elements 31 and 32 are on a management system 33 arranged, the two circular curved guide sections 34 and 35 having. At the first curved guide section 34 is the first forming element 31 arranged, while at the second circular curved guide section 35 the second forming element 32 is arranged. The forming elements 31 and 32 are doing at their respective circular curved guide sections 34 and 35 movably mounted, so that during a movement along the respective circular curved guide section 34 . 35 the respective forming element 31 . 32 performs a concentric movement whose center of rotation or center in the through the two guide sections 34 and 35 formed circle lies.

Due to the concentric movement of the forming elements 31 . 32 The angle between the belt portion and the web portion can be varied, as a result, the angle between the running surfaces of the rollers of the conveyor 20 and the running surfaces of the rollers of the respective forming element 31 . 32 becomes changeable.

The circular curved guide sections 34 . 35 are doing on a guide frame 36 arranged so that the circular curved guide portions can be moved in translation. The translational movement direction of the curved guide sections 34 . 35 on the guide frame 36 is parallel to the running surface of the conveyor 20 what in the embodiment of the 1 causes the translational movement direction lies in the plane of the web section. It is therefore fundamentally advantageous if the plant 10 is formed so that the circular curved guide sections 34 . 35 are arranged to be translationally movable on the guide frame, that the direction of movement of the translational movement of the circularly curved guide portions lies in the plane of the web portion, whereby the width of the web portion is changeable (see 3 ).

In the embodiment of 1 are the forming elements 31 . 32 at their respective circular curved guide section 34 . 35 each via a quick-release device fixed to the respective circular curved guide section 34 . 35 arranged. By loosening the quick release device 37 can be the respective forming element 31 . 32 at the respective circular curved guide section 34 . 35 move concentrically and fix in the desired position again.

This makes it possible to adjust without any structural changes in the overall system, the angle between web portion and belt portion, whereby the setup time is significantly reduced and the component throughput can be increased. This will ultimately make the overall system more profitable.

However, it is also conceivable that the forming elements 31 . 32 at its respective curved guide portion 34 . 35 by means of a servomotor (actuator) are arranged concentrically movable, wherein by means of a control unit (not shown), the servo motors are controlled such that the respective forming element 31 . 32 performs a concentric motion. Thus, the desired angle between belt section and web section can be adjusted automatically by the system.

Another advantage of the automated design is that the angle can also be changed during the forming process, so that Faserpreforms can be produced with profiles that have an over the entire length changing angle between belt portion and web portion.

Furthermore, it is conceivable that the circular curved guide sections 34 . 35 also via actuators on the guide frame 36 are arranged so that also automated by the control unit, the width of the web portion by the translational movement of the circular curved guide sections 34 . 35 can be set. Again, it is conceivable that the control unit during the continuous conveying of the fiber material and during the continuous forming of the fiber material, a translational movement of the circular curved guide sections 34 . 35 performs so that over the entire length of Faserpreform time varying web width arises.

2 shows in a plan view of the plant 10 in a configuration for the production of C-profiles with a narrow web section. The two forming elements 31 . 32 were along their respective circular curved guide section 34 . 35 Concentric moves so that the running surfaces of the rollers of the respective forming elements 31 . 32 lie within tolerances in parallel and beyond the running surfaces of the rollers of the conveyor 20 define a right angle. As a result, C-profiles can be made of flat fiber material, wherein the angle between the belt portion and web portion has substantially 90 degrees.

The fiber preform to be produced 40 in 2 has a first belt section 41 on, passing through the first forming element 31 is formed while the second belt portion 42 through the second forming element 32 is formed. Between the first strap section 41 and the second strap portion 42 is the web section 43 in the embodiment of the 2 narrow.

With a view to 3 a configuration becomes apparent in which the circularly bent guide sections 34 . 35 were translationally moved so that they were moved away from each other, reducing the width of the web sections 43 was enlarged. With such a configuration as in 3 Recognizable, C-profiles can be produced in relation to their belt sections 41 . 42 a wide bridge section 43 exhibit.

4 shows an embodiment of a configuration with which L-profiles can be produced. In the case of an L-profile, a belt section is bent relative to the web section at an angle greater than 0, while the other, opposite belt section is angled at an angle of 0 degrees, so that web section and belt section are parallel. In the embodiment of 4 is the first belt section 41 almost an extension of the bridge section 43 , as between belt section 41 and bridge section 43 0 degree angles exist. This was the first forming element 31 Concentric moves so that the running surfaces of the rollers of the first forming element 31 parallel to the rollers of the conveyor 20 lie. The second forming element 32 on the other hand, the second belt section angles 42 at an angle of 90 degrees to the web section 43 so that a classic L-profile shape is created.

5 finally shows a configuration of a Z-profile, in which between the first belt portion 41 and the bridge section 43 an angle of 270 degrees was set while between the second belt section 42 and the bridge section 43 an angle of 90 degrees is applied.

LIST OF REFERENCE NUMBERS

10

investment

20

Conveyor

21

roller pair

22a, 22b

Rolling the conveyor

30

reshaping

31

first forming element

32

second forming element

33

guidance system

34

first circular curved guide section

35

second circular curved guide section

36

guide frame

37

Quick clamping device

40

fiber preform

41

first strap section

42

second belt section

43

web section

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 102012101706 A1 [0007, 0010, 0032]
• DE 102008032574 A1 [0008]

Claims (13)

Plant (10) for producing a Faserpreform (40) from a flat fiber material of a fiber composite material, wherein from the Faserpreform (40) by curing a in the fiber material of the Faserpreform (40) infused matrix material, a fiber composite component can be produced, wherein the system (10) a Conveying device (20) which is designed for the continuous conveying of the fiber material in a conveying direction, and wherein the system (10) has a forming device (30), during the continuous conveying of the fiber material by means of at least one forming element (31, 32), to the fiber material is guided along contact, for bending a belt portion (41, 42) of a web portion (43) of the fiber material along the conveying direction to form a predetermined angle between belt portion (41, 42) and web portion (43), characterized that the at least one deformation element (31, 32) concentrically around d as fiber material is mounted so movable that by a concentric movement of the at least one forming element (31, 32) of the angle between the belt portion (41, 42) and the web portion (43) is adjustable. Appendix (10) to Claim 1 , characterized in that the shaping device (30) has a guide system (33) which has at least one circularly curved guide section, which is arranged partially circumferentially around the belt section (41, 42) of the fiber material and on which the at least one deformation element (31, 32 ) is movably mounted such that by a movement of the at least one forming element (31, 32) along the curved guide portion of the guide system (33), the concentric movement of the at least one forming element (31, 32) is effected to the angle between the belt portion ( 41, 42) and the web section (43). Appendix (10) to Claim 1 or 2 , characterized in that the forming device (30) in addition to the at least one first forming element (31) for bending the first belt portion (41) at least a second forming element (32) along which the fiber material is guided along contact and the bending of a second belt portion (42), which is opposite to the first belt portion (41) and between which the web portion (43) is provided, from the web portion (43) of the fiber material along the conveying direction to form a predetermined angle between the second belt portion (42) and the web portion (42). 43), wherein the at least second deformation element (32) is mounted so as to be movable concentrically around the fiber material such that the angle between the second belt section (42) and the web section (43) is determined by concentric movement of the at least one second deformation element (32). is adjustable. Appendix (10) to Claim 2 and 3 , characterized in that the guide system (33) next to the first circular curved guide portion has at least a second circular curved guide portion which partially circumferentially about the second belt portion (42) of the fiber material arranged and on which the at least one second forming element (32) movable is mounted, that by a movement of the at least one second deformation element (32) along the second curved guide portion of the guide system (33) the concentric movement of the at least one second deformation element (32) is effected to the angle between the second belt portion (42) and to adjust the web section (43). Appendix (10) to Claim 4 , characterized in that the guide system (33) has a guide frame (36) on which the first and / or the second circularly curved guide section are mounted so movable relative to the fiber material, that by a relative movement of the first and second guide section, the width of Stegabschnittes (43) is adjustable. Plant (10) according to one of the preceding claims, characterized in that at least one of the forming elements (31, 32) is mounted concentrically around a fixed pivot point about the fiber material. Plant (10) according to any one of the preceding claims, characterized in that at least one of the forming elements (31, 32) is mounted concentrically movable about the fiber material, that the fulcrum of the respective forming element (31, 32) lies within the fiber material. Plant (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, each having two oppositely rotating rollers, between which the fiber material can be passed. Plant (10) according to one of the preceding claims, characterized in that the system (10) has a displacement device which is designed to displace the fibers of the fiber material to form a curvature in the fiber preform (40) to be produced. Process for producing a fiber preform (40) from a flat fiber material of a Fiber composite material, wherein from the Faserpreform (40) by curing a in the fiber material of the Faserpreform (40) infused matrix material, a fiber composite component can be produced, wherein the fiber material is continuously conveyed through a system (10) by means of a conveyor (20), comprising the steps: Bending a belt section (41, 42) from a web section (43) of the fiber material along the conveying direction to form a predetermined angle between the belt section (41, 42) and the web section (43) by means of a forming element (31, 32) of a forming device ( 30) of the system (10), characterized by - concentric movement of the forming element (31, 32) to the fiber material such that the angle between the belt portion (41, 42) and the web portion (43) is adjusted. Method according to Claim 10 characterized by deflecting a second belt portion (42) opposite to the first belt portion (41) and between which the web portion (43) is provided, from the web portion (43) of the fiber material along the conveying direction to form a predetermined angle between the second belt portion (42) and the web portion (43) by means of a second forming element (32) of the forming device (30), wherein the second forming element (32) is moved concentrically around the fiber material such that the angle between the second belt portion (42) and the Web section (43) is set. Method according to Claim 11 , characterized in that the first and / or the second forming element (32) is moved relative to the other without taking into account a concentric movement, so that by the relative movement of the forming elements (31, 32) to each other, the width of the web portion (43) is adjusted , Method according to one of Claims 10 to 12 , characterized in that a plant (10) for producing the Faserpreform (40) according to one of Claims 1 to 9 provided.

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