• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A method for producing a fiber composite component (1) and tool arrangement therefor, wherein a flat fiber layer (3) is arranged on a carrier form (2), which on one side remote from the carrier form (2) has at least one longitudinal plane of the fiber laminate (3). protruding stiffening profile (5) which is pressed between corresponding tool parts (6) of a molding tool (7), wherein by means of a molding tool (7) and the fiber layer (3) or the at least one stiffening profile (5) enclosing airtight film ( 9) a support (2) sealed space (10) is formed, which is connected to at least one resin feed line (12) and at least one vacuum line (15), wherein by applying a negative pressure to the vacuum line (15) resin is sucked , which impregnates the fiber fabric (3) or the stiffening profile (5) for forming the fiber composite component (1), wherein air and resin between the tool parts (6) of the Formwerkzeu gs (7) are sucked through the at least one stiffening profile (5) into a suction channel (16) extending in the mold (7), which via an extraction opening (17) of the mold (7) in air or resin-conducting connection with the at least one Vacuum line (15) is.
    公开号:AT511113A2
    申请号:T295/2011
    申请日:2011-03-04
    公开日:2012-09-15
    发明作者:
    申请人:Facc Ag；
    IPC主号:
    专利说明:

    The invention relates to a method for producing a fiber composite component, wherein on a carrier form a flat fiber layer is arranged, which is provided on a side facing away from the carrier form with at least one protruding from the longitudinal plane of the fiber fabric stiffening profile, which ver-pressed between corresponding tool parts of a mold is formed, wherein by means of a mold and the fiber layer or the at least one stiffening profile enclosing airtight film sealed to a supporting space space, which is connected to at least one resin feed line and at least one vacuum line, wherein by applying a negative pressure to the vacuum line resin is sucked, which impregnates the fiber fabric or the stiffening profile for forming the fiber composite component.
    The invention further relates to a tool assembly for a method for producing a fiber composite component, with a carrier mold for receiving a flat fiber fabric, and a mold with corresponding tool parts, which include a recess for receiving a stiffening profile for the fiber fabric in the closed state.
    The prior art discloses various infusion methods for producing fiber composite components, in which a dry fiber material is impregnated with a matrix material which is sucked by applying a vacuum to a sealed space. The Fasermateria.1, which is a preform or a semifinished product of the finished composite component may be formed depending on the version by a Multiaxialgelege, a fabric or by un-idiktionsale layers. This preform is arranged on a tool which defines the facing component side of the fiber composite component. On the opposite side of the composite component, a vacuum structure is arranged, which has different films, tear-off fabric and membrane depending on the design.
    From EP 1 181 149 B1 an injection method for the production of a fiber-reinforced plastic component from a dry fiber composite semifinished product is known, which is arranged on a tool. To form an infusion space, the fiber composite component is coated with a semipermeable membrane which is gas-permeable, but prevents the passage of matrix material. In addition, a tear-off fabric and a flow aid can be arranged. This arrangement is covered with a gas-impermeable film, which is sealed by means of a seal on the tool, so that a second space is formed, which is connected to a vacuum line. Thus, two separate rooms are used to ensure a blanket ventilation of the fiber fabric and to prevent the entry of matrix material in the vacuum line.
    Another infusion method is described in US 5,601,852, in which the composite component is produced on a solid support, which is sealed with a special, individual supply channels forming vacuum bag.
    The known methods are in principle very well suited to produce high-quality fiber composite components, but reach their limits when large-area structures are to be provided with reinforcing profiles. In this case, complex and expensive vacuum structures and foil or membrane arrangements are required in the known methods. In particular, there is the danger that local leaks, tearing of the foils or premature fii.iJ en the vacuum lines with matrix material comes. This problem is further complicated if tight tolerances for the geometry of the profiles (position, position, thickness, height, etc.) are given.
    Accordingly, the object of the present invention is to provide a method of the type mentioned, which is improved in terms of Prob.leme explained above. Accordingly, in particular, an easily implementable method should be available, which is suitable for the production of fiber composite components with reinforcing profiles, even in larger numbers and with. complicated course, well suited. In addition, a structurally simple tool arrangement is to be created for use in such a method.
    This object is achieved in the method of the initially-mentioned type in that air and resin between the tool parts of the mold is sucked through the at least one stiffening profile in a suction channel extending in the mold, via a suction opening of the mold is in air or resin-conducting connection with the at least one vacuum line.
    Accordingly, when a negative pressure is applied to the sealed space, air and resin between the tool parts of the mold are sucked by the stiffening profile. After impregnation of the stiffening profile of the permeated air or resin flow is passed into the suction channel in the mold, which adjoins the central recess of the mold. The suction channel, which is expediently designed as an integral recess of the mold, has a comparison with the central recess of the mold comparatively small cross-section, wherein the introduced air or resin flow reaches the suction opening of the mold, which is connected to the vacuum device. This ensures in an advantageous manner that air and resin can reach the vacuum line only after complete penetration of the preform, which is composed of the fiber layer and the stiffening profile. This allows in particular that the preform at least one of a semipermeable, i. air-permeable but resin-impermeable, membrane-free portion, preferably in the region of at least one stiffening profile, may have. Thus, the problems encountered in the prior art, especially the complicated and error-prone arrangement of the semipermeable membrane in the region of the stiffening elements as well as an undesirable penetration of resin into the vacuum line prior to complete penetration of the preform, can be reliably avoided. Thus, high quality fiber composite components for various arrangements and configurations of the stiffening profiles can be produced. In addition, vorteilhaf-terwe.ise the rejects can be considerably reduced.
    In order to ensure a complete impregnation of the stiffening profile in comparatively short Ze.itintervalien, it is advantageous if the suction of resin and air via the suction opening takes place at the side facing away from the supporting form top of the mold. Accordingly, the mold has on his
    Upper side of a suction opening formed in particular as a recess of the mold, so that air and resin passes after passing through the stiffening profile on the suction to the outside of the mold. The suction port is suitably connected to the vacuum line to maintain the suction pressure inside the mold.
    For venting the stiffening profile, it is advantageous if air and resin are sucked off at least in sections substantially perpendicular to the longitudinal plane of the fiber fabric in the suction channel. As a result, resin and air can be efficiently sucked by the fiber web through the stiffening profile in the suction and transported over the at least partially perpendicular to the longitudinal plane of the Fasergeleges extending suction to the outside suction of the mold to which a vacuum is applied by means of the vacuum line.
    In order to prevent entry of resin into the vacuum line, it is expedient for the vacuum line to have a dry, air-permeable and resin-impermeable membrane filter which is set to change to a substantially airtight state when impregnated with resin. After complete saturation of the fiber semifinished product, the resin passes through the suction channel in the vacuum line which aurweist the membrane filter. When completely wetted with resin, the membrane filter closes, interrupting the air extraction. Thus, a self-regulating air extraction is achieved. Preferably, the vacuum line or the vacuum device connected to it has detection means which are set up to detect a pressure change in the vacuum line. When the membrane filter transitions into the air-impermeable state when impregnated with resin, this causes an increase in pressure in the vacuum device, which can be detected by the detection means in order to detect complete saturation of the fiber semifinished product. This arrangement of the Mernbranfilters in the vacuum line is particularly advantageous if the process is carried out in a closed space, so that the progress in the production of fiber composite component can not be observed directly. Such semipermeable membrane or membrane filter • * ft * * * * * * * * * * * * * * * * * * * *
    * * are known in the art from another context. In a preferred embodiment of the membrane filter, which is known from sportswear, a thin silicone skin is provided, which is overstretched in the manufacturing process so that fine pores are generated, which are permeable to air, but for a liquid, in the present case resin, impermeable. In contact with resin, the pores are gradually closed, so that the membrane is in the airtight state. The silicone skin may be bonded to a support layer in the form of a fabric.
    In order to assist the venting of the fiber semifinished product, it is advantageous if a further vacuum line, in particular in an edge region of the fiber fabric, is arranged. The number of vacuum lines used depends primarily on the dimensions of the fiber composite component and the number and nature of the stiffening profiles.
    With regard to an easy-to-install, partially-saving arrangement for producing the fiber composite component, it is advantageous if the arranged in the edge region of the fiber fabric further vacuum line tune with the connected to the suction in the mold vacuum line in a common Hauptlei, 'is merged. Accordingly, the suction takes place at at least two points of the fiber semifinished product, wherein the vacuum lines are mic connected to the common main line, which is connected to generate the negative pressure to the vacuum device.
    Appropriately, in a region free of the mold, in particular in an edge region of the fiber composite component, a membrane or fabric structure is arranged which has a distribution membrane and / or a tear-off fabric. Such a membrane or tissue structure is basically known in the prior art. The extraction of air and resin on the mold, however, makes it possible to dispense with a semipermeable membrane for separating ej nes infusion space of a vent space or use such a semipermeable membrane exclusively in the edge region of the fiber composite component, whereas the remaining areas of the fiber composite component of the semipermeable membrane be free can. 6 " * »* * 4 • * • 4 6 " * »* * 4 • * • 4 i I« * • «4 * *« 4
    To form a hermetically sealed infusion space in the interior of the airtight foil, it is favorable if the distribution membrane Ver is sealed in the edge region of the fiber fabric against the support form.
    To carry out the method it is expediently provided that the aspiration of resin in an oven is carried out with the introduction of heat. If the process is carried out in the oven, it can not be easily determined whether the impregnation of the fiber fabric has been completed. As described above, it is therefore of particular advantage if in the vacuum line a semipermeable membrane filter is arranged, which merges in contact with resin in a closed, airtight state. Thus, the air extraction is automatically interrupted after complete impregnation of the fiber fabric or the stiffening profile, as soon as the resin passes to the membrane filter in the vacuum line.
    The object underlying the invention is also achieved by a tool assembly of the type mentioned, in which the mold has a suction channel connected to the recess for receiving the stiffening profile, which is connected via a suction opening formed on the mold with a vacuum line for the suction of air. In the prior art molding tools for use in an infusion process in various designs are known. The forming tool has at least two cooperating tool parts which enclose a central recess for pressing a correspondingly shaped stiffening profile received therein.
    The molding tool also has at least one suction channel, which is designed as a recess of at least one tool part of the molding tool. The suction channel connects the recess for the stiffening profile with the suction opening, which can be connected to the vacuum device. The effects or advantages that can be achieved thereby essentially correspond to those in the method explained above, so that reference can be made to these statements in order to avoid repetition.
    In order to improve the suction of air and resin through the mold, it is preferably provided that the suction opening is formed as a recess of the mold on the side facing away from the support form top of the mold. In the operating position of the mold, the longitudinal axis of the suction channel is preferably arranged substantially perpendicular to the longitudinal plane of the carrier mold.
    According to a preferred embodiment, the mold in the closed state has a cross-sectionally substantially rectangular recess for pressing a web-shaped part of the stiffening profile. To form a stringer element, in particular a T-shaped stiffening profile can be provided, which reinforces, for example, in an aircraft wing, a large-area wing structure produced from the flat fiber structure.
    Of course, however, other known in the art per se known configurations of the mold may be provided to provide appropriate stiffening profiles. Accordingly, it is provided in an alternative preferred embodiment that the mold in the closed state has a cross-sectionally substantially L-shaped recess for pressing a correspondingly shaped part of the stiffening profile. As a result, in particular a so-called LZ stiffening profile can be produced.
    In a preferred A.usführungsform is provided that at least two molding tools are provided for pressing each of a stiffening profile, between which at least one spacer block is arranged, which has a resin supply channel connectable to the resin supply channel. On the one hand, the spacer is arranged to fix adjacent molding tools in the intended position; In addition, the resin supply can be carried out by the spacers, wherein the resin is introduced via the resin supply channel in the region of the fiber fabric in the sealed space.
    For the resin feed, it is favorable if the resin supply channel of the spacer block has a substantially perpendicular to the longitudinal plane of the 8 "".
    Fasergeleges extending portion which is connectable to the resin feed line and having a substantially parallel to the longitudinal plane of the Fasergeleges extending portion for introducing resin. The introduction of resin is thus tangential or parallel to the longitudinal plane of the fiber fabric, whereby a suitable impregnation of the fiber fabric can be achieved.
    The invention will be explained below with reference to exemplary embodiments illustrated in the figures, to which, however, it should not be restricted. In detail, in the drawing:
    1 is a schematic sectional view through a structure for manufacturing a fiber composite component in the infusion method according to an embodiment of the invention, wherein a stream of air or resin is sucked through a T-shaped stiffening profile in a mold having a suction channel connected to at least one vacuum line;
    2 shows a sectional view corresponding to FIG. 1 of a construction for producing a fiber composite component, wherein according to a further embodiment of the invention an LZ stiffening profile is provided;
    3 shows a schematic sectional view through a construction according to the invention for producing a fiber composite component, wherein an air-permeable and resin-impermeable membrane is arranged in an edge region of the fiber composite component;
    4 schematically shows a section through the tool arrangement in the region of the suction channel, wherein a connection part is attached to a suction opening of the suction channel having top of the mold, to which the vacuum line is connected;
    5 a and 5b each show a schematic view of the vacuum line, which has an air-permeable and resin-impermeable membrane filter in the dry state (see Fig. 5a) which, when impregnated with resin, is in a substantially airtight state (see Fig. 5b). passes; 9 '
    6 shows a diagrammatic view, cut in the region of a suction channel of a molding tool, of the tool assembly with fiber composite component received therein, wherein adjacent molding tools are spaced apart by spacer blocks which have a resin feed channel connectable to the resin feed line;
    Fig. 7 shows the detail A framed in Fig. 6 with a circle on the contrary enlarged scale;
    8 is a perspective view of the tool assembly according to FIG 6 with a section in the region of the resin supply channel of a spacer block ..;
    9 shows the detail B framed in a circle in FIG. 8, on the contrary enlarged scale;
    10 shows a top view of the tool arrangement according to FIGS. 6 to 9;
    11 shows an elevational view of the tool arrangement according to FIGS. 6 to 10; and
    Fig. 12 is a schematic diagram of the temperature profile (top) and the pressure curve (below) during the manufacture of fiber composite part.
    FIGS. 1 and 2 each show a structure for producing a fiber composite component 1 in the infusion method, wherein a planar fiber layer 3, in particular made of carbon fibers, is arranged on a carrier mold 2, which is only schematically illustrated Planking field trains. On a side facing away from the supporting form 2 side of the fiber composite component 1 at least one stiffening profile 5 is arranged, which stands up from the longitudinal plane of the fiber fabric 3. At the beginning, the fiber layer 3 and the stiffening profile 5 are present as a dry semifinished fiber product or as a preform, which is impregnated with resin to form the fiber composite component 1. According to the embodiment shown in FIG. 1, the stiffening profile 5 has a bar or stringer. "4 4 # 444 4 *. 4 4 4 4 4. · 4 4 4 * 444 4 4 4 4 * 4 44 4 * 4 ^ 044 44 44 ·· 44 4 # 4 gerförmigen part 5 'and a resting on the fiber fabric 3 part 5' ', which together form a T-shaped fiber composite component 5 train.
    The web or stringer-shaped part 5 'of the stiffening profile 5 is pressed between corresponding tool parts 6 of a molding tool 7. For this purpose, the forming tool 7 has a recess 8 corresponding to the stiffening profile 5, in which the stiffening profile 5 is received (for the sake of clarity, the forming tool 7 is shown at a distance from the stiffening profile 5 in the schematic figures 1 to 3; However, of course, on the stiffening profile, see Fig. 7 to 11} In the embodiment shown wedge-shaped blocks are provided as tool parts 6, which, however, may of course also have a different shape and enclosing the stiffening profile 5 enclosing airtight film 9 (also referred to with vacuum bag) a space sealed to the support mold 2. For this purpose, seals 11 are provided on opposite sides of the tool assembly It is schematically connected to an arrow shown schematically resin supply line 12, which may have a (shut-off) valve 13. The resin feed line 12 is connected to a resin reservoir (not shown). The structure also has a vacuum device 14, which has at least one vacuum line 15 leading from the space 10, which is connected to a corresponding vacuum machine (not shown) for generating a negative pressure. By applying a negative pressure, resin is sucked into the space 10 through the resin feed line 12. The aspirated resin is sucked through the fiber fabric 3 or through the stiffening profile 5 in order to impregnate the fiber fabric 3 or the stiffening profile 5 with resin to form the fiber composite component 1,
    In known methods of this type, it has proven difficult to separate the impregnation of the preform with matrix material from the air suction. For this purpose, a semi-permeable, ie, at least one-sidedly extending around the tool arrangement was usually used. permeable but matrix material impermeable film used to separate an infusion space connected to the resin supply from a vent space connected to the vacuum line. However, this has proved to be complicated and error-prone especially in large-scale structures, which are provided with complicated stiffening elements.
    In contrast, in the embodiment shown, air and resin are sucked between the tool parts 6 of the molding tool 7 by the stiffening profile 5 into a suction channel 16 (see Fig. 3 and Fig. 7) formed in the molding tool 7, which side faces away from the support form 2 the stiffening profile 5 connects to the recess 8 between the tool parts 6 of the mold 5. The suction channel 16 is connected via a formed at the top of the mold 7 suction port 17 in air and resin-conducting connection with the vacuum line 15. From Fig. 2 is also a further vacuum line 15 'can be seen, which supports the vacuum line 15 in an edge region of the fiber fabric 3 is arranged. The vacuum line 15 'can be merged with the vacuum line 15 (not shown) following the suction channel 16 in the mold 7 in a common main line, the main line being connected to a common vacuum machine (not shown).
    As can be further seen from FIG. 1 and FIG. 2, a membrane or fabric structure 18 is provided in a region that is free of the mold 5, which is at least one flow aid or distribution membrane 18 ', which can be fixed with an adhesive tape, for example , In addition, below the distribution membrane 18 ', a tear-off fabric ("peel-ply") can be provided, which is applied directly to the building surface. The distribution membrane 18 'is used to distribute the sucked resin on the component surface. The tear-off fabric facilitates stripping of the manifold-impregnated manifold membrane 18 'after completion of the fiber composite component 1. However, in the embodiment shown, it is not necessary that a semipermeable membrane be slipped over the entire assembly to form an infusion space of one Separate ventilation area. '12 * '• * * k * * * * • * · ·
    »»
    As can also be seen schematically from FIG. 1 and FIG. 2, a membrane filter 19 or 19 'is arranged in the vacuum lines 15, 15', which in each case is adapted to change into a substantially airtight state when impregnated with resin. The arrangement of the membrane filters 19, 19 ', de ren function in connection with Fig. 5a, 5b is described, allows an advantageous self-regulation of the infusion process by the air extraction via the vacuum lines 15, 15' is stopped as soon as that from the suction channel 16th abge led resin via the vacuum line 15, 15 'to the respective membrane filter 19, 19' passes.
    From Fig. 2, an alternative embodiment of the stiffening profile 5 can be seen, which has an L-shaped part 5 ', which adjoins a stepped stepped from the flat fiber layer 3 part 5' ', so that a LZ profile is obtained.
    The recess 8 between the tool parts 6 is correspondingly L-shaped.
    From Fig. 3 in particular the edge region of the structure can be seen. Accordingly, in the edge region of the fiber composite component 1, a semipermeable, i. air-permeable and resin-impermeable, membrane 20 is arranged, which is sealed by means of seals 21 against the mold 7 and the support mold 2. This prevents premature resin entry into the vacuum line 15 '. However, the remaining sections of the fiber composite component 1, in particular in the region of the stiffening profiles 5 and in regions between adjacent stiffening profiles 5, can remain free of such a semipermeable membrane; In these areas premature resin entry into the vacuum line 15 is prevented by the above-explained arrangement of the suction channel 16 in the mold 7.
    Fig. 4 shows a Schn.il: t view of the structure in the region of the mold 7, wherein the adjoining the recess 8 above the stiffening profile 5 suction channel 16 can be seen, via the suction opening 17 with a connection part 22 (for example, a silicone profile) in combination stands. The connection part 22 preferably extends over the entire length of the stiffening profile 5. Preferably, each stiffening profile 5 has its own connection part 22 for connection to the vacuum device 14. The connection part 22 is, as shown schematically in FIG. 4, connected to the vacuum line 15, which has the membrane filter 19. The connecting part 22 may have longitudinally spaced dividing walls (not shown) which divide the interior of the connecting part 22 into individual chambers, which are preferably each connected to a suction channel 16 of the forming tool 7. After passing through the stiffening profile 5, air and resin flow via the suction channel 16 into the connection part 22 and from there into the vacuum line 15. When the resin passes via the vacuum line 15 to the membrane filter 19, the membrane filter is converted into the airtight state, so that the air extraction is interrupted. The pressure drop across the vacuum line 15 can be detected by detection means (not shown) to detect the end of the infusion process. This is particularly advantageous when direct observation of the manufacturing process is not possible, which is especially the case when the process is carried out in an oven with heat input.
    The function of the membrane filter 19 can be seen schematically from FIGS. 5a and 5b; the membrane filter 19 'is designed accordingly. Accordingly, the vacuum line 15 has a connected to the space 10, especially with the connection part 22 disposed therein portion 15 a, which is connected via a Ver-bond part 23 with a portion 15 b, which is connected to the vacuum machine. The membrane filter 19 is arranged in the connecting part 23. In the open state, which is shown in Fig. Sa is. the membrane filter 19 is permeable to a flow of resin illustrated by an arrow 24 and to an airflow illustrated by an arrow 25. For this purpose, the membrane filter 19 may have fine pores, which are produced in the production of the membrane filter 19, 19 ', for example by overstretching a thin silicone skin. When wetted with resin, the membrane filter 19, 19 'still remains permeable to air until the membrane filter 19, 19' is completely wetted, whereby the air permeability is lost. Thus, the membrane filter 19, 19 'initially causes a throttle
    • ίίί · · · • • 14 14 14 14 14 14 14 14 14 14 14 14 14 14 14 14 14 14 14 14 14 14 14 14 14 14 14
    Effect if the pores are gradually closed in contact with resin, before the membrane filter 19, 19 'takes over the function of a matrix lock analogous to a self-regulating valve in the air-permeable state. In the airtight state shown in Fig. 5b thus both a resin passage (arrow 24) and an air passage (arrow 25) in the portion 15 b of the vacuum line 15 is prevented.
    Various views of the tool assembly for use in the infusion method described above are shown in FIGS. 6 to 11.
    As can be seen from FIG. 6, for pressing a plurality of stiffening profiles 5 (FIG. 6, for example, three stiffening profiles 5), a corresponding number of shaping tools 7 are provided, which are arranged on the supporting form 2. Between the molds 7 spacer blocks 26 are arranged, which fix the molds 7 in the intended position. The molding tools 7 also have adjusting means, z.ß. Screws or clamps on to compress the stiffening profile 5 received therein to the desired nominal size.
    As is apparent from the detail view according to FIG. 7, the suction channel 16 is formed as an integral recess of the molding tool 7. In the illustrated embodiment, the suction channel 16 extends substantially perpendicular to the longitudinal plane of the fiber fabric 3. The suction channel 16 connects via an inlet opening 27 to the above the stiffening profile 5 to the facing inside of the mold 7 towards remaining free area of the recess 8; Thus, a longitudinally extending channel is formed above the profile web of the stiffening profile 5. The suction channel 16 may, for example, have a circular, oval or rectangular cross-sectional geometry.
    In Figs. 8 and 9 is. the tool arrangement is shown in each case with a section in the region of the spacer block 26. Accordingly, the spacer block 26 has a central resin feed channel 28 which is connected to the resin feed line 12. The resin feed channel 28 has a section 28 a extending substantially perpendicular to the longitudinal plane of the fiber ply 3, which is connected to the resin feed line 12, and a section 28 b running essentially parallel to the longitudinal plane of the fiber web 3, which extends in the region of the fiber web 3 into the room 10 opens. Accordingly, the resin can advantageously be introduced substantially tangentially to the longitudinal plane of the fiber fabric 3.
    As can be seen from the plan view according to FIG. 10, the air extraction takes place via a plurality of suction openings 17 which are spaced apart in the longitudinal direction of the mold 7 and open into the connecting part 22 (not shown in FIG. 10) to which at least one vacuum line 15 is connected Resin supply is, as mentioned, at a plurality of spacer blocks 26, which are distributed at certain intervals over the length of the molds 7.
    The above-described method using the tool arrangement arranged therefor can be used with various matrix materials or resins, which differ in particular by their viscosities and their temperature parameters. Suitable for this purpose are, on the one hand, room temperature curing matrix materials or, alternatively, hot curing agents, which are available in different versions. In the case of room temperature resins, infusion and subsequent curing takes place at room temperature. For the hot curing agents, the typical infusion temperatures are between e.g. 80 ° C to 120 ° C and the curing temperatures in the range of about 180 ° C. An appropriate vacuum pressure for all temperature ranges is about 20 mbar, as a tolerance for the quality of the vacuum, a pressure drop when switching off the vacuum machine in the amount of about 20 mbar per 10 min is given. At the beginning of the process, the entire assembly can be vacuum tested. When the vacuum is applied, the throttling point ion of the membrane filters 19, 19 'is observed, which causes the equilibrium between the vacuum pressure before and after the membrane filter 19, 19' to be established only after a certain time. Then you can start with the vacuum test, which should fulfill the above mentioned tolerances.
    In the case of a thermosetting resin, the die assembly, together with the preform of the fiber composite component 1 disposed therein, is set to an infusion temperature of e.g. Heated to 100 ° C. For this, the entire structure is placed in an oven. The resin provided for infusion is separately brought to infusion temperature thereof. Advantageously, the temperature of the resin is slightly below the temperature of the tooling assembly to achieve improved flowability. After reaching the required target parameters (temperature, vacuum pressure), the infusion process begins.
    FIG. 12 shows a typical temperature (top) or pressure curve (bottom) during the infusion process when using a hot-curing resin. Therein Tl denotes the room temperature, T2 the infusion temperature, T3 an optional holding level and T4 the curing temperature. In the corresponding pressure diagram pl denotes the ambient pressure and pv the infusion pressure. The vacuum is switched on at least until the end of the time of the curing temperature T4, when the matrix loses viscosity and the chemical curing begins.
    权利要求:
    Claims (15)
    [1]
    1. A method for producing a fiber composite component (1), wherein on a carrier mold (2) a flat fiber layer (3) is arranged, which on a side facing away from the carrier form (2} with at least one of the longitudinal plane of the fiber fabric (3) projecting stiffening profile (5) is provided, which is pressed between corresponding tool parts (6) of a mold (7), wherein by means of a mold (7) and the fiber fabric {3) or at least one stiffening profile (3) enclosing airtight foil (9) is formed to a support mold (2) sealed space (10) which is connected to at least one resin feed line (12) and at least one vacuum line (15), wherein by applying a Vacuum on the vacuum line (15) resin is sucked, which impregnates the fiber fabric (3) or the stiffening profile (5) for forming the fiber composite component (1), characterized in that air and resin between de n tool parts (6) of the molding tool (7) through the at least one stiffening profile (5) in a mold (7) extending suction duct (16) are sucked, which via a suction opening (17) of the molding tool (7) in air or resin-conductive connection with the at least one vacuum line (15).
    [2]
    2. The method according to claim 1, characterized in that the suction of resin and air via the suction opening (17) on the side facing away from the support form (2) top of the mold (7).
    [3]
    3. The method according to claim 1 or 2, characterized in that in the suction channel (16) air and resin are sucked off at least partially substantially perpendicular to the longitudinal plane of the Fasergeieges (3).
    [4]
    4. The method according to any one of claims 1 to 3, characterized in that the vacuum line (15) has a permeable in the dry state and resin-impermeable membrane filter (19) which is adapted to pass in a saturation with resin in a substantially airtight state ,
    [5]
    5. The method according to any one of claims 1 to 4, characterized in that at least one further vacuum line (15 '), in particular in an edge region of the fiber fabric (3), is arranged.
    [6]
    6. The method according to claim 5, characterized in that the at least one in the edge region of the fiber fabric (3) arranged further vacuum line (15 ') with the suction duct (16) in the mold (7) subsequent vacuum line (15) in a common main line is merged.
    [7]
    7. The method according to any one of claims 1 to 6, characterized in that in a by the mold (7) free area, in particular in an edge region of the fiber composite component (1), a membrane or tissue structure (18} is arranged, which is a distribution membrane (18 ') and / or has a tear-off fabric.
    [8]
    8. The method according to claim 7, characterized in that the distributor membrane (18 ') in the edge region of the fiber fabric (3) relative to the supporting form (2) is sealed.
    [9]
    9. The method according to any one of claims 1 to 8, characterized in that the suction of resin is carried out in an oven under heat.
    [10]
    10. Tool arrangement for a method for producing a fiber composite component (1), with a carrier mold (2) for receiving a flat fiber fabric (3), and a molding tool (7) with corresponding tool parts (6), which in the closed state, a recess (8 ) for receiving a stiffening profile (5) for the fiber layer (3) einschiießen, characterized in that the molding tool (7) with the recess (8) for receiving the stiffening profile (5) connected to the suction channel (16) via a on Forming tool (7) formed suction opening (17) with a vacuum line (15) for sucking air is connectable.
    [11]
    11. Tool arrangement according to claim 10, characterized in that the suction opening (17) as a recess of the molding tool (7) on the of the supporting form (2) facing away from the top of the forming tool 19 * zeugs (7) is formed.
    [12]
    12. Tool arrangement according to claim 10 or 11, characterized in that the molding tool (7) in the closed state has a cross-sectionally substantially rectangular recess (8) for pressing a web-shaped part (5 ') of the stiffening profile (5}.
    [13]
    13. Tool arrangement according to claim 10 or 11, characterized in that the molding tool (7) in the closed state has a cross-sectionally substantially L-shaped recess (8) for pressing a correspondingly shaped part (5 ') of the stiffening profile (5).
    [14]
    14. Tool arrangement according to one of claims 10 to 13, characterized in that at least two molding tools (7) are provided for pressing in each case a stiffening profile (5), between which at least one spacer block (26) is arranged, one with the resin supply line (12) has connectable resin supply channel (28).
    [15]
    15. Tool arrangement according to claim 14, characterized in that the resin supply channel (28) of the spacer block (26) has a substantially perpendicular to the longitudinal plane of the fiber fabric (3) extending portion which is connectable to the resin-kuleitung (12), and one in the Substantially parallel to the longitudinal plane of the fiber fabric (3) extending portion (28b) for introducing resin.
    类似技术:
    公开号 | 公开日 | 专利标题
    EP2681037B1|2014-12-03|Method for producing a fibre composite component
    EP2585282B1|2020-04-29|Mold for producing fiber-reinforced components
    EP2909013B1|2018-05-23|Device and method for producing a rotor blade belt
    DE10013409C1|2000-11-23|Vacuum injection process for manufacturing fiber reinforced composite products involves evacuating second chamber causing resin to flow into preform in adjacent evacuated first chamber
    DE60208358T2|2006-09-28|MOLDING WITH VENTILATION STRUCTURE FOR INCLUDED GASES
    EP1420940B1|2008-04-02|Method and device for producing fiber-reinforced components by an injection method
    EP1469986B1|2006-07-12|Method and devices for producing fibre-reinforced components
    DE102014007869B4|2016-02-11|Apparatus and method for infiltrating fiber material with resin to produce a fiber composite component
    WO2010136433A2|2010-12-02|Device and method for producing a composite component
    DE102012017142A1|2014-03-06|Humidifying device, in particular for a fuel cell
    DE102005003713B4|2012-08-30|Process for making fiber reinforced hollow core sandwich panels in the vacuum assisted resin infusion process
    DE19926896A1|2000-12-14|Vacuum forming of resin-impregnated composites uses a flexible mold surface and air pressure to control resin distribution in flow channels
    DE102008006261B3|2009-01-08|Laminate for lining matrix feeders used to impregnate preforms comprises gas-permeable inner sheet and gas-impermeable outer sheet separated by layer of gas-permeable spacers, textile layer being laminated to outer surface of inner sheet
    EP2519400B1|2019-10-16|Infusion method and structure for carrying out an infusion method
    EP1469987B1|2006-08-09|Degassing device for degassing matrix material in order to produce fibre-reinforced components
    WO2012175208A1|2012-12-27|Container, in particular a self-supporting container, and method for producing same
    EP2731794B1|2018-11-28|Stabilising the honeycomb core for sandwich components
    DE102012015374A1|2014-02-06|Multilayered fiber composite plastic component manufacturing method, involves applying partial layers with pressure, and removing manufactured fiber composite plastic component after hardening hardenable matrix material
    DE102016120799B3|2017-12-28|vacuum hood
    DE102015007284B4|2019-02-28|Process for the production of fiber composite components
    EP1607210A1|2005-12-21|Multi layered film for manufacturing fibre reinforced composites
    EP3103627A1|2016-12-14|Suction in resin infusion method
    WO2018177985A1|2018-10-04|Infusion device and method for producing fibre-reinforced composite parts
    DE10305544A1|2004-08-26|Multi-layer film for manufacture of fiber reinforced composite products comprises a gas impermeable layer and a porous second layer
    同族专利:
    公开号 | 公开日
    CN103402741A|2013-11-20|
    CA2827545A1|2012-09-13|
    US20140001682A1|2014-01-02|
    RU2584739C2|2016-05-20|
    CN103402741B|2015-11-25|
    ES2529327T3|2015-02-19|
    BR112013022365B1|2020-01-07|
    BR112013022365A2|2016-12-06|
    CA2827545C|2018-10-02|
    RU2013144592A|2015-04-10|
    AT511113B1|2013-09-15|
    WO2012119163A1|2012-09-13|
    US9339976B2|2016-05-17|
    EP2681037B1|2014-12-03|
    EP2681037A1|2014-01-08|
    AT511113A3|2013-07-15|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE102015120572A1|2015-11-26|2017-06-01|Airbus Operations Gmbh|Resin locking device for an infusion tool|US3739753A|1971-04-15|1973-06-19|Gen Motors Corp|Rotary combustion engine ignition|
    DE3739753C2|1987-11-24|1990-07-05|Dornier Gmbh, 7990 Friedrichshafen, De|
    US4942013A|1989-03-27|1990-07-17|Mcdonnell Douglas Corporation|Vacuum resin impregnation process|
    US5439635A|1993-02-18|1995-08-08|Scrimp Systems, Llc|Unitary vacuum bag for forming fiber reinforced composite articles and process for making same|
    US5939013A|1997-08-25|1999-08-17|Florida State University|Process and apparatus for the production of high strength polymer composite structures|
    DE10013409C1|2000-03-17|2000-11-23|Daimler Chrysler Ag|Vacuum injection process for manufacturing fiber reinforced composite products involves evacuating second chamber causing resin to flow into preform in adjacent evacuated first chamber|
    JP4118685B2|2001-01-25|2008-07-16|クイックステップ、テクノロジーズ、プロプライエタリ、リミテッド|Composite, metal parts manufacturing, forming and joining systems|
    US7138028B2|2001-07-26|2006-11-21|The Boeing Company|Vacuum assisted resin transfer method for co-bonding composite laminate structures|
    US20030019567A1|2001-07-26|2003-01-30|Burpo Steven J.|Vacuum assisted resin transfer method for co-bonding composite laminate structures|
    US6811733B2|2001-11-13|2004-11-02|The Boeing Company|Resin transfer molding multi-part/shim tooling |
    US20080211145A1|2005-07-05|2008-09-04|Quickstep Technologies Pty Ltd|Composite Component Production Using Fluid Density and Pressure|
    RU2392121C2|2005-12-30|2010-06-20|Айрбус Эспанья, С.Л.|Procedure for fabricating composite panels with u-shaped stiffeners|
    ES2740349T3|2007-01-26|2020-02-05|Toray Industries|Process for manufacturing a preform for molding a fiber reinforced resin beam, apparatus for manufacturing it and process for manufacturing a fiber reinforced resin beam|
    ITTO20070796A1|2007-11-08|2009-05-09|Alenia Aeronautica Spa|EQUIPMENT FOR RESIN INFUSION IN A CLOSED MOLD PREFORM.|
    FR2941397B1|2009-01-23|2016-12-09|Soc Lorraine De Construction Aeronautique|DEVICE FOR MANUFACTURING A PIECE OF COMPOSITE MATERIAL BY RESIN TRANSFER MOLDING|
    DE102010062871A1|2009-12-29|2011-06-30|Airbus Operations GmbH, 21129|Infusion method for manufacturing fiber-reinforced composite component with textile semi-finished part, involves forming local gas receiving space between composite component and chamber wall|
    GB2519160B|2013-10-11|2016-06-22|Spirit Aerosys Inc|Method of liquid resin infusion of a composite preform|CN103072223B|2013-01-31|2015-06-03|中材科技风电叶片股份有限公司|Fabrication method of wind power vane web mold|
    AT516211A1|2014-08-11|2016-03-15|Facc Ag|Cam member|
    AT517198B1|2015-04-24|2021-12-15|Facc Ag|Control surface element for an airplane|
    US10953598B2|2016-11-04|2021-03-23|Continuous Composites Inc.|Additive manufacturing system having vibrating nozzle|
    CN107139505B|2017-03-31|2019-10-11|郑州磨料磨具磨削研究所有限公司|High speed and ultrahigh speed grinding wheel base body vacuum infusion molding device|
    RU2748461C2|2019-04-30|2021-05-25|Общество с ограниченной ответственностью "Газовоздушные технологии"|Method and apparatus for manufacturing composite product|
    DE102019114710A1|2019-05-31|2020-12-03|Airbus Operations Gmbh|Apparatus and method|
    法律状态:
    2017-11-15| MM01| Lapse because of not paying annual fees|Effective date: 20170304 |
    优先权:
    申请号 | 申请日 | 专利标题
    ATA295/2011A|AT511113B1|2011-03-04|2011-03-04|METHOD FOR PRODUCING A FIBER COMPOSITE COMPONENT AND TOOL ASSEMBLY THEREFOR|ATA295/2011A| AT511113B1|2011-03-04|2011-03-04|METHOD FOR PRODUCING A FIBER COMPOSITE COMPONENT AND TOOL ASSEMBLY THEREFOR|
    US14/003,149| US9339976B2|2011-03-04|2012-03-01|Method for producing a fiber composite component|
    EP12709497.7A| EP2681037B1|2011-03-04|2012-03-01|Method for producing a fibre composite component|
    RU2013144592/05A| RU2584739C2|2011-03-04|2012-03-01|Method of making element from fibrous composite material and apparatus for realising said method|
    CN201280011487.2A| CN103402741B|2011-03-04|2012-03-01|Method for the manufacture of fibre-composite component and the mold system for the method|
    PCT/AT2012/000047| WO2012119163A1|2011-03-04|2012-03-01|Method for producing a fibre composite component, and a tool arrangement for same|
    BR112013022365-0A| BR112013022365B1|2011-03-04|2012-03-01|PROCESS FOR THE PRODUCTION OF A FIBER COMPOSITE COMPONENT|
    CA2827545A| CA2827545C|2011-03-04|2012-03-01|Method for producing a fibre composite component, and a tool arrangement for same|
    ES12709497.7T| ES2529327T3|2011-03-04|2012-03-01|Procedure for the production of a fiber composite material construction element|
    [返回顶部]