EP3582956A1 - Procédé pour la réalisation d'un composant renforcé par fibres - Google Patents

Procédé pour la réalisation d'un composant renforcé par fibres

Info

Publication number
EP3582956A1
EP3582956A1 EP18712518.2A EP18712518A EP3582956A1 EP 3582956 A1 EP3582956 A1 EP 3582956A1 EP 18712518 A EP18712518 A EP 18712518A EP 3582956 A1 EP3582956 A1 EP 3582956A1
Authority
EP
European Patent Office
Prior art keywords
fiber material
preform
component
unidirectionally oriented
strand
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP18712518.2A
Other languages
German (de)
English (en)
Inventor
André Rochus HIEBELER
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Grob Aircraft Se
Original Assignee
Grob Aircraft Se
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Grob Aircraft Se filed Critical Grob Aircraft Se
Publication of EP3582956A1 publication Critical patent/EP3582956A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/06—Fibrous reinforcements only
    • B29C70/08—Fibrous reinforcements only comprising combinations of different forms of fibrous reinforcements incorporated in matrix material, forming one or more layers, and with or without non-reinforced layers
    • B29C70/081—Combinations of fibres of continuous or substantial length and short fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28—Shaping operations therefor
    • B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
    • B29C70/34—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation
    • B29C70/345—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation using matched moulds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28—Shaping operations therefor
    • B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
    • B29C70/34—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation
    • B29C70/347—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation combined with compressing after the winding of lay-ups having a non-circular cross-section, e.g. flat spiral windings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
    • B29C70/86—Incorporated in coherent impregnated reinforcing layers, e.g. by winding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/56—Winding and joining, e.g. winding spirally
    • B29C53/564—Winding and joining, e.g. winding spirally for making non-tubular articles

Definitions

  • the invention relates to a method for the production of a fiber-reinforced, forces-transmitting component.
  • fiber-reinforced plastics or fiber composite plastics are well known. This is a material consisting of reinforcing fibers and a plastic matrix (for example a synthetic resin). It is also known to realize components, which are claimed predominantly in a preferred direction, as fiber composite plastic components, in which unidirectionally oriented fiber material, wel- At least part of a fiber-plastic composite semifinished product is used.
  • the invention has taken on the task of developing a solution for the production of weight-reduced and transmitting forces or torques components. Such components would be used for example in aircraft.
  • the invention proposes a method for the production of a fiber-reinforced component transmitting forces or torques, which is characterized by the sequence of the following steps:
  • the preform is at least partially surrounded by random fiber material, which is or will be at least part of a fiber-plastic composite semi-finished product.
  • the method according to the invention provides for the production of a preform in a first step.
  • the preform forms in the finished component, so to speak, the skeleton or the support structure, and is optimally adapted to the load application of the component. This happens, for example, in that the force load of the component is determined and then sufficient equipment of the finished component with the unidirectionally oriented fiber material strand is provided at the important and correct areas of the component.
  • the load topology ie the load distribution that is to be expected or required in the component during use of the component, is recorded or determined (for example with methods of component design using the finite element method) and corresponding this determined load topology then designed the preform, which is then realized in the described manufacturing process as a first step.
  • the unidirectionally oriented fiber material strand is not arranged flat, but along lines of force or curves, optionally with straight and / or bent sections.
  • the method proposed according to the invention therefore proposes the production of complex components which transmit forces or moments, wherein initially only the unidirectionally oriented fiber material strand optimally orientates and aligns in the template, optionally with further elements relating to the force line (see below), is arranged.
  • the preform to be formed in the first step therefore describes at least one spatial structure, i. H. it forms a two-dimensional or preferably three-dimensional physical structure or unit which, after its manufacture, is sufficiently durable and stable to be able to be removed from the template and then connected to the fiberglass material and finished in a second processing step following the first step become.
  • the method according to the invention solves the problem posed in the beginning in a simple as well as in a flexible manner, and allows the production of a weight-reduced or weight-optimized but topologically optimally adapted component.
  • the method according to the invention skillfully combines the properties of the unidirectionally oriented fiber material strand with the properties of the random fiber material.
  • the unidirectionally oriented fiber material is responsible for absorbing the forces in the main force direction.
  • the fiber material due to its structure, has the property of absorbing forces in any direction and thus also of lateral forces.
  • the height of the lateral forces is significantly lower than that of the main forces.
  • Both the unidirectionally oriented fiber material and the random fiber material are or will at least be part of a fiber-plastic composite semifinished product.
  • the fiber-plastic composite semi-finished product consists of a fiber content and a resin, for example polyester, epoxy or vinyl ester resin, optionally the semi-finished product also includes other fillers or additives. It is known to use this semi-finished as industrially premixed or prepared products. However, the invention also includes the variant that the components of the semi-finished product only come together during the production of the component (or the preform) and then form or become the semi-finished product. Both variants are part of the invention.
  • One advantage is that the respective plastic components of the two different fiber-plastic composite semifinished products interact in a skilful manner, whereby the two semi-finished products are not processed simultaneously but one behind the other, since at least part of a fiber material is formed from the unidirectionally oriented fiber material.
  • Plastic composite semifinished product is or will, first a preform is formed, which is then later, at least subsequently, optionally also in a different environment, further processed with the random fiber material.
  • unidirectionally oriented fiber material in particular cord-like rovings, impregnated or pre-impregnated rovings, impregnated or pre-impregnated filament bundles, Towpreg or slit tape is provided.
  • Roving is a bundle, strand or multifilament yarn made of parallel filaments (continuous fibers). Filaments made of glass, aramid, basalt carbon or other substances are most commonly grouped into rovings.
  • pre-impregnated fibers are called "prepregs.”
  • Prepregs are prepreg-impregnated fiber-matrix semifinished products which are cured under temperature and pressure, the reaction resins consisting of a usually highly viscous but not yet polymerized thermoset plastic matrix.
  • the unidirectionally oriented fiber material strand preferably consists of a bundle of long fiber or continuous fiber material.
  • long fiber material is considered a fiber material with a length of at least 50 mm, 70 mm, 90 mm or 120 mm. Clever way, the lengths of the fiber material can also be determined on the dimensions of the component.
  • the long fibers may preferably have an average (or minimum) fiber length which corresponds to between 50% and 150%, preferably between 70% and 100%, of a diagonal length of the component to be produced. Endlosfasermaterial can this purpose have a significantly higher average fiber length.
  • fiber material strand also includes arrangements with individual fibers, this is equivalent to this in the sense of the description.
  • the fiber material strand is arranged as a continuous material or quasi-endless material. Under quasi-endless material, the sectioned arrangement of fiber material extrudates is described in sections, which leads to similar stabilities mechanically.
  • this proposal for the design of the unidirectionally oriented fiber material strand is that this cord-like semi-finished product (as a dry, damp or pre-impregnated semi-finished) can be arbitrarily positioned to form any spatial structures in space, in particular.
  • the preform can be easily equipped with a higher mechanical stability by a corresponding increase in the parallel laid fiber material strands.
  • Simple processing and high flexibility characterize this proposal. It can be executed both manually and automatically.
  • the arrangement of unidirectionally oriented fiber material takes place on or in a mold-supporting tool.
  • a preform is first formed from the unidirectionally oriented fiber material.
  • the proposal also includes the variant that from the unidirectionally oriented fiber material first a precursor in another mold-supporting tool (for example, a template that serves the shaping of the preform) is produced and then the preform thus produced to another place / in another form is brought to connect to the random fiber material.
  • This form-supporting tool has, for example, pins, pins, pads or the like in order to al in the desired, load-conform form.
  • the unidirectionally oriented fiber material can be inserted into a mold-supporting or shaping tool or arranged on a mold-supporting tool.
  • the preform evolves to an inherently stable preform to then safely and reliably remove it from the mold-supporting tool, and possibly also to temporarily store.
  • the unidirectionally oriented fiber material strand is stretched at least in sections during placement in the template.
  • this reduces the consumption of fiber material strand and at the same time optimizes the component size.
  • the components produced by the process are often claimed to train a strained arrangement of the fiber material strand for an effective, wear-free power transmission is very low.
  • the manufacturing method in that the fiber material strand is held, for example, in a first force-introducing element by a first gripper, that is fixed and the second gripper, which also promotes the fiber material strand, the strand and thus arrives during a movement of this second gripper Clamping the strand is done.
  • the train achieves an exact straight alignment of the fiber strand of material or fiber strands. This is very favorable for the load bearing and the power flow.
  • force-conducting elements such as a / e threaded bushing, bearing shell, bearing, insert, ball bearings, eyelet or bolts are arranged with the unidirectionally oriented fiber material.
  • these force (on or off) conducting elements with the unidirectional connected fiber material, for example, by these entwined (at least partially or Mehrfachschlange) or integrated, in order to achieve the most effective force introduction and -austechnisch in the fiber material strand.
  • the finished component is connected with the force-conducting elements to the corresponding force-transmitting mechanism.
  • the arrangement of the unidirectionally oriented fiber material strand is automatically or automatically automated, e.g. done with a robot.
  • the rope or string-like fiber material strand is arranged by a robot, which is equipped with a corresponding conveyor for the fiber material strand, in an effective and arbitrary manner.
  • a hardening, curing or compacting of the preform takes place after the arrangement of the unidirectionally oriented fiber material. This creates an intrinsically stable preform.
  • the process of hardening or curing results from the resin used.
  • a compression or compression step takes place, which can also be used optionally in the formation of the preform.
  • hardening can also be achieved by freezing, in which case the preform arranged is cooled until the liquid constituents in the resin crystallize to give a solid structure.
  • the aim of this step and the proposed variants in this case is to provide after arranging a sufficiently inherently stable preform available that can be removed from the template, then optionally stored and then inserted into the compacting or in one differently designed second step to connect the fiber material.
  • the preform before it is removed from the template, frozen or partially cured.
  • the preform formed remains in the template until its spatial structure has sufficient intrinsic stability.
  • the preform and random fiber material are compacted in such a way that the random fiber material penetrates into the unidirectionally oriented fiber material strand and / or between the unidirectionally oriented fiber material strands of the preform.
  • the preform can be formed from a plurality of unidirectionally oriented fiber material strands arranged in parallel.
  • the compacting is a pressing in which on the one hand unwanted air bubbles are pressed out of the composite material and on the other hand, a positive and cohesive bond between the two materials (fiberglass material and fiber material strands) is produced.
  • a random fiber material in the context of this invention consists of crosslinkable resins and fibers.
  • the fibers consist for example of glass, aramid, basalt, carbon or other substances.
  • the resin is, for example, polyester, epoxy or vinyl ester resin into consideration. The respective combinations are known to the person skilled in the art.
  • the fibers may be short or long fibers, therefore, the length of the fibers is from a few millimeters to 5 cm and more. The exact dimensions of course depend on the type of component. Characteristic of the random fiber material is that the arrangement of the fibers in the random fiber material is spatially homogeneous, ie not unidirectional.
  • a flowable, reactive resins and fibers containing molding compound such as Sheet Molding Compound (SMC) or Bulk Molding Compound (BMC) is provided as a random fiber material, and the unidirectionally oriented fiber strand material with the molding compound in a mold , For example, a compacting tool, a pressing tool or the like is pressed.
  • SMC Sheet Molding Compound
  • BMC Bulk Molding Compound
  • BMC is thereby made available as a pressable, flowable or sprayable semifinished product, for example as sack or bucket goods.
  • SMC is available as a plate product.
  • BMC as well as SMC are preferably processed in a hot pressing process with the unidirectionally oriented fiber material strand.
  • the partially cured preform is cured together with the molding compound containing the fibers and the part of the non-bonded or polymerized molecules of the plastic matrix of the preform is skillfully connected to the molecules of the molding compound and so a homogeneous transition between these two different semi-finished results.
  • the above-described molding compound is available as a ready-to-use semi-finished product on an industrial scale. Of course, compacting is also foreseeable at this step.
  • the random fiber material is provided as a fabric-like fiber mat equipped or endowable with a plastic matrix, which is in particular fabricated to the dimensions of the component or of the preform.
  • This proposal has the advantage that even complex components can be equipped with an optimal combination of load-transferring elements and lateral force-transmitting elements.
  • the fiber-matrix composite is produced only during assembly, so the fiber mat is soaked in the insertion or bonding with the preform with the resin or that pre-impregnated fiber mats are used.
  • the random fiber material surrounds the preform on both sides or that the random fiber material only partially encloses the preform.
  • This process step is probably with SMC as well as with BMC material possible.
  • the BMC material has a fundamentally better flowability (it is suitable, for example, for injection molding), which is why BMC material is better suited for this process step.
  • the SMC material is arranged, for example, only on one side of the preform and the preform is then in the press or Kompaktier- tool on one side and remains uncoated after the bond with the random fiber material and therefore visible. If the preform is only partially enclosed, this may not affect the mechanical stability, which is defined by the preform. But such a variant saves weight!
  • both BMC and SMC material can be used as random fiber material.
  • the procedure is therefore very variable with regard to the use of the semifinished product, with a view to the component to be realized and with a view to efficient production.
  • the random fiber material is inserted into the compacting tool before the preform.
  • laying out the plate-like SMC material in the compacting tool (the pressing or joining tool) in front of the preform is favorable.
  • the random fiber material is inserted into the compacting tool. It is provided, for example, that the random fiber material covers the preform afterwards, this can also be done, for example, with the compacting tool still open, using, for example, SMC or also BMC material.
  • preform would be sandwiched between two SMC and / or BMC layers prior to compacting / compression.
  • SMC sinomer
  • BMC bicarbonate
  • the random fiber material is injected into the compacting tool.
  • the compacting tool preferably BMC-Wirrmaschinematerial is used. This proposal allows a highly automated production.
  • the compacting, in particular pressing of the preform with the random fiber material into a component takes place in such a way that the spatial structure of the preform does not change, not significantly, or under consideration of the compacting forces, due to the compaction.
  • the respective plastic components of the unidirectionally oriented fiber material having fiber-plastic composite and the fiberglass material comprising fiber-plastic composite are chemically compatible with each other.
  • the invention is not limited to the fact that only identical plastic matrix systems are used in the two different semi-finished products, but it is already sufficient that the plastic matrix systems used are sufficiently chemically compatible with each other to a kraftüber blockchainde and / or shaping To achieve structure in the plastic matrix.
  • the co-curing of the preform with the random fiber material takes place under control of the temperature and / or the pressure, in particular as a function of time. These parameters are also used to control the tempering process for the preform.
  • the unidirectionally oriented fiber material strand is at least part of a fiber-plastic composite semifinished product or in the course of the process becomes a plastic composite semifinished product.
  • the, for example, cord-like unidirectionally oriented fiber material strand is initially equipped with little or no resin and thereafter, during the arrangement of the unidirectionally oriented strand of fiber material in the stencil coated with resin or sprayed and thus undergoes a Generalaushärtung that this material also developed into a semi-finished plastic composite.
  • the compacting tool is equipped with fixing means, which interact with the force-introducing and / or force-transmitting elements of the preform during compacting and so during compacting the position of the forces niein and / or force-conducting elements to each other fix.
  • This improvement achieves that, ideally, the spatial structure, but at least the mutual position of the force-introducing and / or force-transmitting elements, is also at the desired position even after the preform has been connected to the random fiber material, thus ensuring high process reliability.
  • a threaded bushing, bearing shell, bearing point, insert, ball bearing, eye or bolt ie all possible force-absorbing points in such a mechanical system, count among the force-introducing and / or force-conveying elements.
  • the co-curing of the preform with the random fiber material takes place in or outside the compacting tool. If the finished pressed, compacted component is sufficiently stable, if appropriate, therefore partially hardened at first, then this can already be removed from the compacting tool and used again for the production of the next component. It is clear that, conversely, it is particularly favorable for fragile applications that the curing process takes place completely in the compacting tool and only the finished cured component is removed.
  • the unidirectionally oriented fiber material strand in the finished component heterogeneous (this means the expert understands a disparate features of the component with the unidirectional fiber strand, ie, there are volume ranges that do not include fiber strand) is arranged. Since also the lasttop Vietnamese Load of the component usually in the component is not specifically the same, that is homogeneous, the distribution of the unidirectionally oriented fiber material strand in the component is heterogeneous. A homogeneous structure of the component would be given, for example, if the same material composition existed in each room volume of the component.
  • the unidirectionally oriented fiber material strand are arranged so that they concentrate in the finished component at the edge of the component.
  • the prescribed heterogeneous distribution of the fiber material strand preferably leads to the component edge being reinforced, at which, as is known, often the highest loads occur.
  • parts of the fiber material strand are arranged parallel to each other at least in sections.
  • the method is characterized by the sequence of the following steps:
  • the preform is at least partially surrounded by random fiber material, which is or is at least part of a fiber-plastic composite semi-finished product,
  • the preform is sufficiently intrinsically stable, it is stored at a storage location.
  • the invention further comprises a fiber-reinforced, torque or torque transmitting component with force application and Kraftaus effetsticianen, wherein the component has a support structure which is filled by a Ausfachmaterial, wherein the support structure is formed by one, along straight and curved portions extending, unidirectional oriented fiber material rialstrang and the Ausfachmaterial is Wirrfasermaterial. It is clear that the support structure described here was created by the preform as described.
  • the component according to the invention preferably has a plurality of force introduction and / or Kraftaus Gustavspunk- te.
  • an inventive component is also used as a pivotable lever, which means that the component has in addition to the force introduction and / or Kraftaus effetsembl a bearing point and is pivotable about this bearing point.
  • this bearing is preferably already a ball bearing, which is integrated with the manufacturing process of the component with the same.
  • this bearing is also a point of introduction and / or force.
  • the at least one force introduction and / or force extraction point is wrapped at least partially or multiply by the fiber material strand.
  • the component has not only one of a preform originating support structure, but two or more support structures. These support structures are preferably designed as preforms in the context of this application and are connected in the common process with the random fiber material.
  • the method described above can be used in the same way except that instead of a preform two or more preforms are used. Clever manner is provided as a force application or Kraftaus Gustavstician a / a threaded bush, bearing shell, bearing, insert, ball bearing, eye or bolt is provided.
  • a bearing point is provided around which the pivot lever is rotatably mounted.
  • Such a depository is also to be understood as a point of introduction or a point of discharge.
  • a component is characterized in particular by the fact that it has at least two force introduction or Kraftaus effetsus. It should be noted that it is the object of such a component according to the invention to transmit forces or torques between two mechanical units, that is such a component according to the invention undergoes a significant mechanical load by applying force.
  • the invention also includes the use of a component as described or a component made by a method according to the claims as described for the transmission of forces or torques.
  • Fig. 1 in a plan view of the unidirectionally aligned
  • Fig. 2a in a plan view of the template produced
  • Fig. 2b is a side view of Figure 2a
  • Fig. 3 in a side view of the inherently stable preform, which is inserted in a lower part of a compacting tool, after a second step of the method according to the invention
  • FIG. 4 shows a side view of the intrinsically stable preform which is inserted into a compacting tool, wherein the compacting tool is now closed by an upper part in order to surround the preform with random fiber material, according to a third step of the method according to the invention
  • Fig. 5 in a plan view of the preform after a first
  • Fig. 6 in a plan view of the component according to the invention
  • the same or corresponding elements are denoted by the same reference numerals and therefore, if not appropriate, will not be described again.
  • the disclosures contained in the entire description are mutatis mutandis to the same parts with the same reference numerals or identical component names transferable.
  • the position information selected in the description such as top, bottom, side, etc. related to the immediately described and illustrated figure and are to be transferred to a new position analogous to the new situation.
  • individual features or combinations of features from the illustrated and described different embodiments may represent for themselves, inventive or inventive solutions.
  • FIG. 1 shows the cord-like unidirectionally oriented fiber material strand 1, which is prepared and stored for the production of the preform. This is, for example meandering reproached, but can be stored differently.
  • the cord-like unidirectionally oriented fiber material strand is inserted in a first step of the method in a template, not shown.
  • the fiber material strand 1 is arranged along straight 10 and bent 11 sections.
  • An essential advantage of the proposal according to the invention lies in the fact that the cord-like unidirectionally oriented fiber material strand 1 can be arbitrarily arranged in space and thus optimally adapted to the load-topological properties of the finished component to be formed.
  • the fiber material strand 1 is formed endless or quasiendlos.
  • FIG. 2 a shows the finished preform 2, which is already equipped with a plurality of force-conducting elements 20, 21, 22 (force-feeding or outgoing from the component).
  • these are provided as bearing shells, eyelets or bearings.
  • the cordless unidirectional aligned fiber strand 1 is wound around these elements, so as to achieve an optimal force input and output into the preform 2 but also the finished component 8.
  • Figure 2b shows a side view of the preform 2, this is not only two-dimensional, but in the embodiment shown here, three-dimensional, so has a curvature.
  • this preform 2 is surrounded by random fiber material, for this purpose the preform 2 is placed in a compacting tool 3, more precisely in the lower part 30 of the compacting tool 3.
  • the compacting tool 3 has a plurality of support pins 4, 4 a, 4 b, which support the edge of the preform 2 and ensure that the preform 2 is spaced from the tool base 33.
  • the space between the preform 2 and the tool base 33 is then filled in the next processing step with the random fiber material 14 and pressed with the preform 2, so compacted.
  • the compacting tool 3 is skilfully connected with its top surface. Part 31 closed, this closing movement is indicated by the arrow 32. It is noteworthy that the tool roof 34 on the top of the preform 2 of these is somewhat objectionable, because even this space will then be filled by the fiber material 14.
  • Both the lower part 30 and the upper part 31 of the compacting tool 3 each have a plurality of feed channels 5 for the random fiber material 14.
  • the random fiber material 14 preferably BMC
  • the random fiber material 14 is fed into the tool interior via the feed channels 5 pressed and so pressed the preform 2 with the random fiber material 14. It is clear that there are several different variants in the prior art for pressing over the preform 2 with the randomizer material 14 (BMC or SMC material), which are equivalent here.
  • FIG. 6 shows the finished component 8 whose body is dominated by the random fiber material 14 as a filler material, but has corresponding injection-molded webs (here also made of random fiber material 14) which form in the region of the unidirectionally oriented fiber material strand 1 which results in the supporting structure.
  • Figure 5 shows the preform 2.
  • 97, 98 and 99 parts of the template are indicated, around which the straight 10 and bent 11 sections of the unidirectionally oriented fiber material strand 1 are laid and are guided by these template parts 97, 98 and 99, until they pass through a hardening process or the like is sufficiently intrinsically stable to be taken out of the stencil.
  • force-conducting (force from the component or diverting) elements 20, 21,22, here for example bearing lugs are force-conducting (force from the component or diverting) elements 20, 21,22, here for example bearing lugs.
  • the finished component 8 is used as a handlebar, which is rotatably mounted on the bearing 21, (for example, on a shaft or bolt) and is acted upon at the bearing 20 with a force that pivots this handlebar in the clockwise direction about the bearing 21 and so also the second bearing 22 pivoted in the clockwise direction.
  • the second bearing 22 another mechanical element, for example, a lever or rod is connected, which then forwards this force.
  • the preform 2 must first sufficiently stable that this position stable (in particular based on the arrangement of the bearings 20, 21, 22 to each other) can be removed from the template and further processed or stored after its production.
  • a post-processing step can then take place in which, for example, the injection card are removed or the component is sandblasted.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Composite Materials (AREA)
  • Mechanical Engineering (AREA)
  • Moulding By Coating Moulds (AREA)
  • Reinforced Plastic Materials (AREA)

Abstract

La présente invention concerne un procédé pour la réalisation d'un composant de transmission de forces renforcé par fibres. Le procédé comprenant les étapes successives suivantes : agencement de matière fibreuse orientée de manière unidirectionnelle consistant au moins une partie d'un produit semi-fini composite fibres-matière plastique, pour donner une préforme en fonction de directions de force principales agissant dans le composant, de sorte que dans le composant fini, la matière fibreuse orientée de manière unidirectionnelle prend en charge les forces principales ; La préforme est entourée au moins en partie de matière de fibres embrouillées consistant au moins en partie d'un produit semi-fini composite fibres-matière plastique ; Durcissage commun de la préforme avec la matière de fibres embrouillées.
EP18712518.2A 2017-03-10 2018-03-07 Procédé pour la réalisation d'un composant renforcé par fibres Withdrawn EP3582956A1 (fr)

Applications Claiming Priority (2)

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DE102017105199 2017-03-10
PCT/EP2018/055669 WO2018162595A1 (fr) 2017-03-10 2018-03-07 Procédé pour la réalisation d'un composant renforcé par fibres

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EP3582956A1 true EP3582956A1 (fr) 2019-12-25

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EP (1) EP3582956A1 (fr)
AR (1) AR111267A1 (fr)
DE (1) DE102018105280A1 (fr)
WO (1) WO2018162595A1 (fr)

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DE102018210119A1 (de) 2018-06-21 2019-12-24 Bayerische Motoren Werke Aktiengesellschaft Faserverbundkörper sowie Verfahren zur Herstellung eines Faserverbundkörpers
DE102018117471A1 (de) * 2018-07-19 2020-01-23 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Faserverbundbauteil für den Einsatz im Kraftfahrzeugbereich sowie Verfahren zur Herstellung eines derartigen Faserverbundbauteils
US11059239B2 (en) 2018-10-15 2021-07-13 Arris Composites Inc. Method and apparatus for composite rib and rib-and-sheet molding
DE102018126998A1 (de) * 2018-10-29 2020-04-30 Boge Elastmetall Gmbh Verfahren zur Herstellung eines Lenkers oder Lenkerkörpers aus endlosfaserverstärktem Kunststoff
DE102019204427B4 (de) * 2019-03-29 2023-12-28 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Verfahren zur Herstellung von mit Fasern verstärkten Bauteilen aus Kunststoff
DE102022125975A1 (de) * 2022-10-07 2024-04-18 Holy Technologies Gmbh Faserverstärktes und recycelbares Strukturbauteil sowie Verfahren zu dessen Bereitstellung

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DE102004007313A1 (de) * 2004-02-14 2005-09-08 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Verfahren und Vorrichtung zur Herstellung eines mit Endlosfasern verstärkten Polymer-Formteils sowie endlosfaserverstärktes Polymer-Formteil
JP4973745B2 (ja) * 2010-02-01 2012-07-11 トヨタ自動車株式会社 連続繊維プリプレグの成形方法
JP2015178241A (ja) 2014-03-19 2015-10-08 トヨタ自動車株式会社 繊維強化樹脂材の製造方法
DE102014215964A1 (de) 2014-08-12 2016-02-18 Bayerische Motoren Werke Aktiengesellschaft Verfahren zum Herstellen eines mit einem unidirektionalen Fasergelege versehenen SMC-Bauteiles

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AR111267A1 (es) 2019-06-26
WO2018162595A1 (fr) 2018-09-13
DE102018105280A1 (de) 2018-09-13

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