EP2648892A2 - Élément pour fabriquer un pré-imprégné fibreux, procédé et produit-programme informatique pour fabriquer ledit élément, dispositif et procédé pour fabriquer un pré-imprégné fibreux, et système pour fabriquer un produit fibreux - Google Patents

Élément pour fabriquer un pré-imprégné fibreux, procédé et produit-programme informatique pour fabriquer ledit élément, dispositif et procédé pour fabriquer un pré-imprégné fibreux, et système pour fabriquer un produit fibreux

Info

Publication number
EP2648892A2
EP2648892A2 EP11791454.9A EP11791454A EP2648892A2 EP 2648892 A2 EP2648892 A2 EP 2648892A2 EP 11791454 A EP11791454 A EP 11791454A EP 2648892 A2 EP2648892 A2 EP 2648892A2
Authority
EP
European Patent Office
Prior art keywords
fiber
semi
producing
finished
product
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Withdrawn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
EP11791454.9A
Other languages
German (de)
English (en)
Inventor
Bernd Schottdorf
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.)
HERO GMBH
Original Assignee
CGB Carbon Grossbauteile GmbH
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 CGB Carbon Grossbauteile GmbH filed Critical CGB Carbon Grossbauteile GmbH
Publication of EP2648892A2 publication Critical patent/EP2648892A2/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Withdrawn legal-status Critical Current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
    • B29C70/28—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
    • B29C70/32—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 on a rotating mould, former or core
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B11/00—Making preforms
    • B29B11/14—Making preforms characterised by structure or composition
    • B29B11/16—Making preforms characterised by structure or composition comprising fillers or reinforcement
    • 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/02—Preparation of the material, in the area to be joined, prior to joining or welding
    • B29C66/028—Non-mechanical surface pre-treatments, i.e. by flame treatment, electric discharge treatment, plasma treatment, wave energy or particle radiation
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
    • B29C66/131—Single flanged joints, i.e. one of the parts to be joined being rigid and flanged in the joint area
    • B29C66/1312—Single flange to flange joints, the parts to be joined being rigid
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/303—Particular design of joint configurations the joint involving an anchoring effect
    • B29C66/3032—Particular design of joint configurations the joint involving an anchoring effect making use of protrusions or cavities belonging to at least one of the parts to be joined
    • B29C66/30321—Particular design of joint configurations the joint involving an anchoring effect making use of protrusions or cavities belonging to at least one of the parts to be joined making use of protrusions belonging to at least one of the parts to be joined
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/721—Fibre-reinforced materials
    • B29C66/7214—Fibre-reinforced materials characterised by the length of the fibres
    • B29C66/72141—Fibres of continuous length

Definitions

  • the present invention relates to an element for producing a semi-finished fiber product and to a method and computer program product for producing the element, to an apparatus and a method for producing a semi-finished fiber product, and to a system for producing a fiber product.
  • Containers pipes, axles and shafts.
  • Suitable fibers are e.g. Carbon fibers, also called carbon fibers, glass fibers,
  • Aramid fibers or the like and / or combinations of such fibers are Aramid fibers or the like and / or combinations of such fibers.
  • the hubs remain in the molding. They are called lost nuclei and may be e.g. improve the diffusion resistance of a molded part. There are also known fusible cores.
  • Cross-winding in which a filament discharges one or more continuous fibers or fiber bundles (rovings) on a rotating known winding core.
  • a matrix provided for embedding the fibers consists, for example, of suitable synthetic resin mixtures. Suitable matrix systems are formable during winding, give the composite part its shape after curing and ensure the transmission of force between the fibers and fiber layers.
  • a winding method for producing a fiber semi-finished product is known.
  • a resin-impregnated fiber is wound onto a rotating steel cylinder to form a semi-finished fiber.
  • the steel cylinder has a longitudinal notch.
  • the longitudinal notch in the steel cylinder makes it possible to cut open the fiber semi-finished product and remove it from the steel cylinder.
  • the removed fiber semi-finished product is cut into pieces and formed with a press into a fiber composite part and cured.
  • a plastic film is applied to the semi-finished fiber, which simplifies handling. The plastic film is peeled off after pressing from the cured fiber composite part.
  • a method for producing a fiber-reinforced plastic product is known from DE 3 133 733 C2.
  • the method provides for winding a fiber strand onto a rotatable drum.
  • the winding takes place in a helical pitch and in an opposite slope.
  • the fiber is impregnated or impregnated either before winding or thereafter with a resin.
  • a prepreg made in this way is cut from the drum.
  • the prepreg serves as
  • DE 1 779 433 A1 describes a method and a device for
  • the composite structure is formed by winding a fiber on a winding core.
  • the orientation of the fibers runs depending on the direction of the main stress direction of the composite structure occurring during operation.
  • Several windings form a laminate.
  • the laminates are then pressed there until hardened.
  • By curing the laminates results in a composite structure, which is tailored to measure according to DE 1 779 433 AI.
  • the cutting of the composite structure generates expensive waste or
  • the object of the present invention is to produce semi-finished fiber products and fiber products more cost-effectively.
  • an element for producing a semi-finished fiber product comprises an envelope surface which defines the element and on which the semifinished fiber article can be formed.
  • the Hüllf kaue is formed depending on the surface content of a further processed semi-finished fiber.
  • the element may be formed as a core, a winding core, a master mold and the like.
  • the element can be designed as a coiling cylinder, cone, truncated cone, paraboloid or body with other suitable geometries. Also composed of bodies, such as cylinders with attached cone, hourglass-like double cone, cone-cylinder cone, etc. are included.
  • the element forms with
  • Undercut is generally a profile, relief or other protruding form. Undercuts in semifinished or further processed semifinished fiber products can practically not be realized with a common fiber winding process and removable hubs. The winding core would be blocked by the undercut and could not be removed from the semi-finished fiber.
  • the element according to the invention preferably does not have to be pulled out of the semifinished fiber product, so that undercuts can be produced in the semi-finished fiber product.
  • envelope surface means a surface which encloses, surrounds or surrounds the volume of the element.
  • the envelope surface is not limited to an area that is covered by something.
  • the envelope surface can also generally be a surface or the sum of a number of surfaces surrounding an arbitrarily shaped volume.
  • the formation of the semifinished fiber product on the envelope surface preferably comprises a winding, covering, covering or the like of the envelope surface with a fiber, with a fiber roving, a sliver or with a similar elongated, thin, flexible and tensile fiber material.
  • the fiber may be formed as an endless fiber. Alternatively, however, the fiber may also comprise a plurality of short or long individual fibers or fiber bundles.
  • the envelope surface of the element can be formed coextensive with the surface content.
  • Semi-finished fiber can be produced at a lower cost.
  • the envelope surface may be formed approximately coextensive with the surface content, i. 80% to 99% surface equality.
  • the material of the fiber may comprise, for example, the following materials: carbon, carbon, ceramic, boron carbide, quartz glass, silicon, silicon carbide, aluminum oxide,
  • Vegetable fibers flax fibers, sisal fibers and combinations thereof, e.g. B. a first material for a fiber core with a wrap of a second material.
  • the formed semi-finished fiber product is preferably a knitted fabric, mesh or scrim made of fibers without or substantially without a matrix.
  • the fiber composite semifinished product is preferably not a hollow body, such as is produced in a known hub process.
  • the semi-finished fiber product may also comprise a matrix.
  • the fabric of the matrix preferably comprises thermosets, such as epoxy resin, or thermoplastics.
  • thermosets such as epoxy resin, or thermoplastics.
  • thermally highly loaded fiber products can be used for the matrix on ceramic or metals.
  • the matrix preferably serves as an adhesive between adjacent portions of the fiber, but is not limited to the action of an adhesive.
  • the fiber and a non-cured matrix together preferably form a fiber composite semifinished product,
  • Semi-finished fiber or the like Even in the cured state, the matrix and the fiber can be understood together as semi-finished fiber, namely in particular when the semifinished fiber is further processed into a further semi-finished or finished product.
  • Further processing of the semifinished fiber product may include shape, condition (e.g., cure), and dimensional change.
  • the semi-finished fiber can be compressed in certain sections, stretched in others.
  • the upsetting or stretching can lead to a change in the surface content of the further processed semi-finished fiber product compared to a trained semi-finished fiber.
  • the individual fibers or the endless fiber can be arranged side by side lying on the envelope surface.
  • the fiber can be arranged in the form of a yarn package in superimposed layers.
  • the envelope surface can also be imaged depending on the surface content of the further processed semifinished fiber product.
  • the mapping in this case means a mathematical relationship between the surface content and the envelope surface.
  • the envelope surface of the element may pass through
  • forming also means making or machining, such as milling, turning, grinding, etc.
  • the enveloping surface can be arranged around a longitudinal axis of the element
  • the rotationally symmetrical lateral surface preferably forms a special case of the envelope surface.
  • Lathes are usually simply constructed 2-dimensional processing machines and therefore built less expensive than 3-, 4- or 5-axis milling machines. Also the ratio of
  • Working space and processing machine price can be cheaper for lathes, so that the element with a lathe is cheaper to produce.
  • Such a lateral surface preferably additionally comprises a bottom and / or cover surface of the element enclosed by the lateral surface.
  • the envelope surface or the lateral surface can be smooth, guide grooves, one
  • a rough surface or guide grooves may be advantageous for winding with a fiber to prevent slippage of the fiber on the element.
  • the envelope surface of the element can be formed as a function of the edge shape of the further processed semi-finished fiber product.
  • the edge shape, or the edge can be used as a limitation of the surface content of the
  • a trapezoidal edge shape of the semi-finished fiber product present in the further processed state leads to a frustoconical envelope surface of the element.
  • a further processed semifinished fiber product which corresponds to simple geometric shapes, such as rectangle, square, triangle, trapezium
  • an envelope surface can be formed depending on the surface content and / or the edge shape of the further processed semifinished fiber product.
  • the dependence corresponds in this case to a winding of the simple geometric shape into a closed surface, namely the envelope surface.
  • a tubular envelope surface may be formed, which comprises a lid and / or bottom.
  • shell circumferences at intervals along the longitudinal axis of the element can correspond to semifinished fiber model transverse lengths at the same distances along a longitudinal axis of a semi-finished fiber model
  • the semifinished fiber model may e.g. be present as a prototype or created.
  • the semifinished fiber model is made of an easily modelable material, such as wood, clay, plastic, etc.
  • the longitudinal axes of the element and the semifinished fiber model are fixed.
  • the fixing of the longitudinal axis preferably takes place before the production of the element and before the production of the semi-finished fiber model, e.g. also in a technical drawing.
  • the longitudinal axes serve advantageously as a common reference line for the distances. If a longitudinal axis is defined in the semi-finished fiber model, then a semifinished fiber model transverse length can correspond to the length of a perpendicular to this longitudinal axis, whereby the semi-finished fiber model transverse length is limited by the edge of the semifinished fiber model.
  • a reference point can be defined, wherein points on the semi-finished fiber product or semifinished fiber model or the element are determined by means of vectors with respect to the reference point.
  • vector transformation By means of a vector transformation, the surface content and / or the edge shape of the further processed semi-finished fiber product can be imaged onto the element.
  • One advantage of a semi-finished fiber model is that the surface content and / or the edge shape of the further processed semi-finished fiber product can be reproduced exactly or at least approximately on the envelope surface of the element, without having to use a computer model of the semifinished fiber product as the starting point.
  • the semifinished fiber model may also be a computer model, i. to be a virtual model.
  • An advantage of the computer model is that no prototype or the like is to be made as a semifinished fiber model, so that the cost of producing the
  • the distances in areas of a curvature of the invention can be reduced. According to the invention, the distances in areas of a curvature of the invention
  • the curvatures can be present at the edges of the further processed semifinished fiber product. However, the curvatures may also include bulges in the surface of the further processed semi-finished fiber product.
  • a linear region may include planes or even, flat surfaces, but also areas with a small curvature.
  • a distance defined by the beginning and end of the linear region is sufficient to image the linear region onto the envelope surface of the element. In areas of low curvature smaller distances may be provided, as in
  • Semi-finished fiber can match.
  • An advantage of the more precise correspondence of the surfaces can lie in less to no accumulating waste on the semi-finished fiber product.
  • Production of a Semifinished Fiber Product Depicting the surface content of a further processed semi-finished fiber product on an enveloping surface, defining the element based on the enveloping surface and forming the element in accordance with the enveloping surface.
  • the imaging may preferably be mechanical based on an objective
  • the imaging may also include forming. If the semi-finished fiber product is formed on the envelope surface and not further processed, then the surface content of the semifinished fiber product can essentially correspond to the surface content of the envelope surface. If the semifinished fiber product is further processed, the surface content of the semifinished fiber product may thereby change at least in sections. For example, if the semi-finished fiber product is pressed or otherwise shaped, the semifinished fiber product can be compressed or stretched so that the surface content changes.
  • the envelope surface can be imaged as a rotationally symmetrical lateral surface.
  • the surface content of the further processed chaff can be mapped mathematically on the rotationally symmetrical lateral surface. This may in this case be a winding, i. be a reverse process.
  • the envelope surface may vary depending on the edge shape of the
  • the dependency may in this case comprise a winding of the simple geometric shape into a closed surface, namely the envelope surface.
  • a tubular envelope surface may be formed, which comprises a lid and / or bottom.
  • the surface content of the further processed semifinished fiber product can be imaged in the same area on the enveloping surface.
  • Imaging can also include a simple, in particular mechanical, copying the surfaces of a further processed semifinished fiber product.
  • the shape of the further processed semifinished fiber product can be determined, distances along a longitudinal axis of the further processed semifinished fiber product determined, semi-finished cross-fiber lengths are determined in the distances and fiber semi-finished cross-sections are mapped to cladding circumferences of the element at intervals along a longitudinal axis of the element.
  • the longitudinal axes are determined along the element or along the further processed semi-finished fiber product.
  • the setting can be made using a technical drawing.
  • the determination of the shape also means a predefinition or definition of the shape, in particular of the surface content and the edge shape of the further processed
  • Semifinished fiber The determination or definition of the shape can be carried out on the basis of a simple technical drawing.
  • the setting of the distances can be done for example by drawing.
  • the determination of the semi-finished fiber transverse lengths can be done by means of a length measuring means.
  • the mapping of the semifinished fiber cross-sections means
  • a measured fiber semi-finished transverse length can be just as long as the corresponding shell circumference.
  • a computer program product for creating an element model comprises a function for mapping a surface content of a semi-finished fiber model onto an envelope surface, which defines the element model.
  • the computer program product preferably includes a CAD (Computer Aided Design) program and a CAM (Computer Aided Manufacturing) program.
  • CAD means one in this case
  • Computer-aided design of the element model and / or semi-finished fiber model The surface content of the semi-finished fiber model can be mapped by a mathematical function on the envelope surface of the element model.
  • the created element model can then be computer-aided, for example, by means of a CNC lathe.
  • the computer-aided creation of the element model makes the manufacturing process for an element fast, repeatable, reliable, and accurate.
  • an apparatus for producing a semifinished fiber article comprises an element with a longitudinal axis, a Faserablege shark which arranges a fiber on the element at a defined first angle to the longitudinal axis to form the semifinished fiber, a further processing device for further processing of the semifinished fiber to a A fiber product, wherein the defined first angle is determined as a function of a second angle of the fiber in the fiber product with respect to a longitudinal axis of the fiber product.
  • a fiber depositing means may comprise any means which can arrange a fiber on the element, e.g. a guide eye, a robot arm and the like.
  • a cutting device may be provided to the formed on the element
  • Semi-finished fiber can also fall down automatically from the element.
  • the further processing device can the semi-finished fiber to another
  • Semi-finished fiber product Semi-finished fiber product, semi-finished fiber product, to further process a fiber product or a fiber end product.
  • an advantage of the dependence of the defined first angle on the second angle is that a fiber orientation or fiber direction desired in a fiber product is already taken into account when the semifinished fiber product is formed on the element.
  • the fiber orientation after further processing can correspond to the desired fiber orientation in the fiber product.
  • the stiffness-to-weight ratio of the entire fiber product can be advantageously improved. This is achievable in particular by the fact that the fiber, and thus the fiber weight, is inserted, wound, woven, installed, etc., where the fiber has the desired effect, such as rigidity, through the defined orientation or the defined angle essentially there in the fiber product achieved for the entire fiber product. In places of the fiber product, which acts in use stronger Belating, thereby more fiber material or thicker fiber layers may be present as in places where act on use of the fiber product low load. A desired fiber orientation in the fiber product further allows for stiffening or increasing the tensile strength in the fiber product in one or more particular directions.
  • the aforementioned element for producing a semi-finished fiber product is an element according to the invention.
  • the fiber depositing device can at least partially arrange the fiber geodetically on the element.
  • Geodetic generally means the theoretically shortest connection between two points on a curved surface, the so-called geodesic line.
  • a geodesic compound for example, a circular arc.
  • To arrange the fiber geodetically on the element essentially means to arrange the fiber on the shortest path between two points on the element.
  • An advantage of geodetic placement may be that the fiber thereby slips less on the element.
  • the fiber may be arranged on the sections of the element geodesically and on other sections at the defined first angle, e.g. to improve the tensile strength of the semifinished fiber in this orientation.
  • Sections may in this case include portions of the fiber or layers of superimposed fibers.
  • the fiber depositing device can have at least one degree of freedom.
  • One degree of freedom generally corresponds to the number of movement possibilities of two objects to each other, for. B. a rotation of Faserablege adopted to the element or a translation of Faserablag worn along the element.
  • the Faserablege Sketsman's hand
  • the element can be rotatable about its longitudinal axis and the
  • Faserablege nails may be movable parallel to the longitudinal axis.
  • the semifinished fiber can be produced inexpensively, since only a frame for receiving the element, a rotary drive for rotating the element and a mounted on a rail Faserablege supplements may be required with a linear drive.
  • the further processing device may comprise a cutting device and / or a press.
  • a cutting device is, for example, a knife, a pair of scissors or the like, which can be used to cut the semifinished fiber product formed on the element along the element with a cut, so as to obtain a flat semifinished fiber product.
  • the semifinished fiber product may fall off the element after the cut.
  • the cutting device is, for example, a knife, a pair of scissors or the like, which can be used to cut the semifinished fiber product formed on the element along the element with a cut, so as to obtain a flat semifinished fiber product.
  • the semifinished fiber product may fall off the element after the cut.
  • the cutting device is, for example, a knife, a pair of scissors or the like, which can be used to cut the semifinished fiber product formed on the element along the element with a cut, so as to obtain a flat semifinished fiber product.
  • the semifinished fiber product may fall off the element after the cut.
  • the cutting device is, for example, a knife,
  • Semi-finished fiber products are removed from the element and fed to a press.
  • the semifinished fiber can be shaped and cured according to a pressing punch, a die or male.
  • a method for producing a semi-finished fiber product may comprise the steps of defining a first angle of a fiber with respect to a longitudinal axis of the semifinished fiber product, defining a second angle as a function of the defined first angle and arranging the fiber on the element for forming the semifinished fiber article at a second angle with respect to one Longitudinal axis of the element.
  • the orientation of fibers in a semi-finished fiber can affect the tensile strength or resilience of the semi-finished fiber in certain directions.
  • An advantage of the method according to the invention for the production of the semifinished fiber product may be that to improve the accuracy of the orientation of the fibers in the semifinished fiber product.
  • a matrix may be supplied during or before the fiber is placed on the element.
  • An advantage of feeding the matrix during the placement of the fiber on the element may be that more time remains to cure or partially cure the matrix.
  • An advantage of feeding a matrix before placing the fiber on the Element may be that the fiber is better impregnated with the matrix, so that less air pockets in the semi-finished fiber arise.
  • the supply of a matrix from the semifinished fiber product may result in a fiber composite semifinished product.
  • the fiber may be arranged on the element at the second angle with respect to the longitudinal axis of the element in sections.
  • a fiber passes over several sections, each with a defined angle around the element.
  • This fiber guide can the tensile strength or
  • the fiber can be arranged at least in sections geodetically on the element. As a result, the fiber generally shifts less on the element.
  • the semi-finished fiber formed on the element in particular along the longitudinal axis of the element, be cut open and removed from the element.
  • the semi-finished fiber can be cut both parallel to the longitudinal axis of the element as well as at a certain angle thereto.
  • semifinished fiber can be cut in a defined curve.
  • the semi-finished fiber product can be pressed into a further processed semi-finished fiber product and / or into a fiber product.
  • the pressing comprises forming the semifinished fiber product from a flat to a three-dimensional shape.
  • the pressing of the semifinished fiber product also includes hardening of the semifinished fiber product to form a fiber product or to a fiber composite semifinished product or another semifinished fiber product.
  • a plurality of fiber products can be glued together.
  • fiber product with semi-finished fiber product fiber product with
  • Semi-finished fiber composite, fiber composite semi-finished with fiber composite semi-finished, semi-finished fiber with semi-finished fiber and the like are glued together.
  • the fiber products are provided with a release agent prior to pressing.
  • the release agent can take out, molding, forming or pressing the release agent
  • the laser ablation involves evaporation or burning of the release agent.
  • the fiber product is applied to the eroded portion with an adhesive, e.g. Adhesive, provided and bonded to another fiber product.
  • an adhesive e.g. Adhesive
  • said steps be an inventive element.
  • a system for producing a fiber product comprises a
  • Imaging unit for imaging the surface content of a semifinished fiber model on an enveloping surface of a winding core to be produced
  • manufacturing unit for producing the
  • Winding core based on the envelope surface, a winding unit for winding the enveloping surface of the winding core with a fiber at a defined angle to a semi-finished fiber
  • a cutting unit which cuts the semifinished fiber product along the winding core
  • a release agent unit which provides the cut semi-finished fiber product with release agent
  • a pressing unit which provides the release-treated semi-finished fiber to a
  • Fiber product forms and cures, and a laser unit which ablates the release agent from the fiber product.
  • the semifinished fiber product may drop after cutting itself from the winding core or removed from a pickup and fed to the release agent unit.
  • an imaging unit comprises a computer or simulation computer.
  • the imaging unit may also include a mechanical copying device, marking dots and measuring tape, etc.
  • the manufacturing unit preferably comprises a CNC-controlled Milling machine or lathe.
  • the pressing unit preferably comprises a mechanical press.
  • the laser unit preferably comprises a device for generating a high-energy radiation.
  • the fiber may be impregnated with a matrix. If the fiber is impregnated with matrix, a fiber composite semi-finished product can be produced on the winding core. The fiber composite semifinished product can thus be more dimensionally stable than the semifinished fiber product in which only fiber is above fiber.
  • the fabric of the matrix preferably comprises thermosets, such as epoxy resin, or thermoplastics. For thermally highly resilient fiber products can be used for the matrix on ceramic or metals.
  • connection unit may comprise a plurality of fiber products and / or
  • the adhesive preferably comprises a matrix material. But also suitable adhesives can be used.
  • Fig. 1 shows an inventive system for producing a fiber product
  • Fig. 3 a shows a further processed semi-finished fiber product according to the invention
  • 3b shows a method for producing a semifinished fiber product
  • Fig. 4a shows another inventive element for producing a semi-finished fiber product
  • Fig. 4b another further processed semi-finished fiber product according to the invention DESCRIPTION OF THE EMBODIMENTS
  • Fig. 1 shows a system 100 for producing a fiber product or a
  • Fiber composite product 104 According to the system 100, an element model 102, also called a hub model, is first created virtually with a computer. Alternatively, this model can also be created manually.
  • the element model 102 is based on a fiber product model, a further processed semi-finished fiber product or a fiber composite product 104 in its dimensions.
  • the element model 102 is an illustration of the
  • the element model 102 serves as a measure to produce on the basis of this data, for example by means of a CNC-controlled lathe 106, a material from an element, also called winding core.
  • the material of the winding core may include metals such as aluminum or steel, and
  • the finished winding core is rotatably mounted and driven by a rotary drive (not shown).
  • the rotating element is wound by the fiber impregnation and leveling device 108 with the impregnated carbon fiber.
  • Laying device 108 moves with a certain feed along the
  • a cutting device 1 10 cuts the finished fiber composite semifinished product in a section along the winding core, so that a mat-like or flat
  • the mat-like fiber composite semi-finished product arises.
  • the mat-like fiber composite semi-finished product is removed from the winding core, provided with a release agent and placed in a press 1 12.
  • the mat-like fiber composite semi-finished product is pressed by means of a die and male in a particular shape, heated and cured at the same time, so that Fiber composite product 104 is formed.
  • the release agent on the fiber composite semifinished facilitates the molding and removal from the press 1 12.
  • the fiber composite product 104 is
  • the laser 1 14 places it in areas, which subsequently with one or more others
  • Components are to be bonded, the fiber up to a predetermined depth freely.
  • Laser 1 14 burns epoxy resin and release agent.
  • the fiber composite product 104 is provided at the exposed areas with adhesive and with one or more other components, e.g. another one
  • the element can also be made by directly measuring a fiber composite product prototype and transferring the dimensions to the element.
  • the mechanical or virtual transfer of dimensions of the fiber composite product from a technical drawing on the element is possible.
  • An area is cut into planes parallel to each other.
  • the resulting intersection lines are converted into circles whose extents correspond to the length of the respective intersection lines.
  • the centers of all resulting circles are arranged on a straight line such that the circle planes are aligned parallel to one another and the distance of the center points corresponds to the distance of the cutting planes of the original surface.
  • FIG. 2 a shows a further processed semi-finished fiber product or a semi-finished fiber composite, for example a carbon fiber reinforced plastic, from which a B pillar 200 for a motor vehicle is formed.
  • the B-pillar 200 is shown in plan view and has a longitudinal axis 202.
  • the B-pillar 200 tapers trapezoidal from bottom to top. At the lower and upper end, the B-pillar 200 is equipped with flange areas.
  • Flange areas may e.g. attached to the top of the roof and at the bottom of the vehicle frame.
  • the B-pillar 200 In the upper and lower regions 204, the B-pillar 200 is strongly arched or curved. In the middle region 206, the B-pillar is slightly curved, less than in the region 204 and designed almost linear.
  • Fig. 2a distances are determined along the longitudinal axis 202 depending on the curvatures.
  • small distances 208 are set.
  • Low curvature region 206 are set at greater distances 210 as compared to distances 208.
  • cutting lengths Ii, I 2 to I n of the B-pillar 200 are measured.
  • Fig. 2b shows a winding core 212 as an element for producing a semi-finished fiber product.
  • the winding core 212 is initially present, for example, as a cylindrical rod material (not shown) and is, for example, by means of a lathe according to the
  • u 2 to u n produced.
  • the cutting lengths Ii, 1 2 to l n are imaged on circumferences ui, u 2 to u n of the winding core 212.
  • the winding core 212 has a longitudinal axis 214 which forms a central axis for the circumference ui, u 2 to u n .
  • the circles are also arranged at the same distances 208, 210, respectively, as defined in the B-pillar 200.
  • the surface content and the edge shape of the B pillar 200 are reproduced on the winding core in reasonable accuracy with little effort, that is to say inexpensively. This eliminates any waste because the B-pillar 200 and the hub 212 are the same area.
  • the fiber semifinished product 300 has a plurality of carbon fibers 302, 304, 306 and 308, which are arranged in a crosswise superimposed manner by a fiber depositing device (not shown). Furthermore, the semi-finished fiber 300 comprises a longitudinal axis 310. The carbon fibers 302 and 304 close to one another
  • the carbon fiber 302 and the longitudinal axis 310 enclose a further fiber semifinished product angle 314, also called a defined angle.
  • the orientation of the fibers 302, 304, 306 and 308 defines an angle, so that a high tensile load of the further processed semi-finished fiber 300 in the directions 316 may be allowed.
  • the directions 316 correspond to the longitudinal directions of the fibers 302, 304, 306 and 308.
  • the further processed semi-finished fiber 300 is produced by means of an element or winding core 318.
  • the element 318 may be made virtually or manually according to the technique illustrated in FIGS. 2a and 2b.
  • the winding core 318 in FIG. 3b has an axis of rotation 320.
  • On the winding core 318 several sections of a single continuous fiber 322 are visible.
  • the endless fiber 322 is arranged in several turns on the winding core 318.
  • the individual fibers 302, 304, 306, and 308 correspond to portions of the continuous filament 322.
  • the filament 322 includes a mandrel angle 324 with the longitudinal axis 320 of the mandrel 318, also called a second angle.
  • continuous filament 322 includes another mandrel angle 326 with itself.
  • a semifinished fiber product is produced, which is subsequently cut off from the winding core 318 and further processed.
  • the further processing of the semifinished fiber product comprises a forming and / or hardening. During forming certain areas of the semifinished fiber product are warped, compressed or stretched.
  • a further processed semifinished fiber product such as the further processed semifinished fiber product 300 can be produced.
  • the fiber semifinished product angles 312 and 314 of the further processed semifinished fiber product 300 are imaged onto the winding core angles 324 and 326 before production of the semifinished fiber product which form the semifinished product angles 312, 314 from the angles 324, 326 after cutting off, removing and further processing the fiber semifinished product.
  • the mapping of the angles can be done by the following steps:
  • FIG. 4 a shows a winding core 400 with a longitudinal axis 402.
  • a carbon fiber 404 is arranged on the winding core 400.
  • the winding core is substantially frusto-conical and has a circumference 410 at a distance 408 from the left side.
  • FIG. 4 b shows a boat hull 412 with a longitudinal axis 414.
  • the hull 412 is formed from a fiber composite semifinished product mat that was previously formed on the winding core 400.
  • the carbon fiber 404 on the winding core 400 corresponds to the carbon fiber 416 in the boat hull 412.
  • the carbon fiber 416 runs in the hull 400 from the nose 418 to the stern lower 420 to provide high tensile strength of the boat hull 412
  • a fuselage cross-section line 424 is defined in FIG. 4b.
  • the distance 422 corresponds to the distance 408 and the length of
  • Hull cross-section line 424 corresponds to circumference 410.
  • the winding core 400 is formed coextensive with the hull 412. Is on the winding core 400 a
  • Fiber composite semi-finished mat formed then separated along the winding core 400, and formed to the boat hull 412, so eliminates any waste, since the boat hull 412 and the winding core 400 are the same area.

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

Abstract

L'invention concerne un élément (212; 318; 400) pour fabriquer un pré-imprégné fibreux, un procédé et un produit-programme informatique pour fabriquer un tel élément (212; 318; 400) consistant à représenter la surface d'un pré-imprégné fibreux traité (104; 200; 300; 412) sur une surface d'enveloppe, à délimiter ledit élément (212; 318; 400) à l'aide de la surface d'enveloppe et à former cet élément (212; 318; 400) selon la surface d'enveloppe. En outre, l'invention concerne un dispositif, et un procédé pour fabriquer un pré-imprégné fibreux consistant à définir un premier angle (312, 314) d'une fibre (302, 304, 306, 308, 322; 416) par rapport à un axe longitudinal (202; 310; 414) d'un produit fibreux (104; 200; 300; 412), à définir un second angle (324, 326) en fonction du premier angle défini (312, 314) et à disposer les fibres (302, 304, 306, 308, 322; 416) sur un élément (212; 318; 400) pour fabriquer un pré-imprégné fibreux afin de former le pré-imprégné fibreux selon le premier angle (312, 314) et/ou le second angle (324, 326) par rapport à un axe longitudinal (214; 320; 402) de l'élément (212; 318; 400). En outre, l'invention concerne un système (100) pour fabriquer un produit fibreux (104; 200; 300; 412).
EP11791454.9A 2010-12-07 2011-12-06 Élément pour fabriquer un pré-imprégné fibreux, procédé et produit-programme informatique pour fabriquer ledit élément, dispositif et procédé pour fabriquer un pré-imprégné fibreux, et système pour fabriquer un produit fibreux Withdrawn EP2648892A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010053635.0A DE102010053635B4 (de) 2010-12-07 2010-12-07 Verfahren zur Herstellung eines Faserverbundprodukts
PCT/EP2011/006107 WO2012076155A2 (fr) 2010-12-07 2011-12-06 Élément pour fabriquer un pré-imprégné fibreux, procédé et produit-programme informatique pour fabriquer ledit élément, dispositif et procédé pour fabriquer un pré-imprégné fibreux, et système pour fabriquer un produit fibreux

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EP2648892A2 true EP2648892A2 (fr) 2013-10-16

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EP (1) EP2648892A2 (fr)
DE (1) DE102010053635B4 (fr)
WO (1) WO2012076155A2 (fr)

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FR2995557A1 (fr) * 2012-09-18 2014-03-21 Aircelle Sa Procede de fabrication de pieces composites, installation de fabrication mettant en oeuvre un tel procede, et pieces composites ainsi fabriquees
DE102014223565A1 (de) * 2014-11-19 2016-05-19 Bayerische Motoren Werke Aktiengesellschaft Verfahren zur Herstellung eines Faserhalbzeugs und Faserhalbzeug
DE102016110848A1 (de) * 2016-06-14 2017-12-14 Wobben Properties Gmbh Verfahren und Vorrichtung zum Herstellen eines Vorformlings
DE102022125198A1 (de) * 2022-09-29 2024-04-04 steptics GmbH Verfahren zur Herstellung von Komposit-Formteilen
FR3163014A1 (fr) * 2024-06-06 2025-12-12 Skf Aerospace France Procédé de fabrication d’une pièce en une matière thermoplastique renforcée de fibres
FR3163015A1 (fr) * 2024-06-06 2025-12-12 Skf Aerospace France Procédé de fabrication d’une pièce en une matière thermodurcissable renforcée de fibres

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US4639387A (en) * 1983-04-25 1987-01-27 Budd Company Fibrous armor material
FR2544656B1 (fr) * 1983-04-25 1988-03-11 Budd Co Procede de realisation d'un materiau de cuirasse et ce materiau
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DE10217918C1 (de) * 2002-04-23 2003-08-07 Xperion Gmbh Verfahren zur Herstellung von Bauteilen als Faser-Kunststoff-Verbund
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DE102010053635B4 (de) 2017-05-11
WO2012076155A3 (fr) 2012-09-07
WO2012076155A2 (fr) 2012-06-14
DE102010053635A1 (de) 2012-06-14

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