EP3558620A1 - Hohlprofil-verbundtechnologie - Google Patents
Hohlprofil-verbundtechnologieInfo
- Publication number
- EP3558620A1 EP3558620A1 EP17826186.3A EP17826186A EP3558620A1 EP 3558620 A1 EP3558620 A1 EP 3558620A1 EP 17826186 A EP17826186 A EP 17826186A EP 3558620 A1 EP3558620 A1 EP 3558620A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- hollow profile
- base body
- profile base
- plastic
- support element
- 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- Withdrawn
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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/1418—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the inserts being deformed or preformed, e.g. by the injection pressure
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- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14598—Coating tubular articles
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- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14836—Preventing damage of inserts during injection, e.g. collapse of hollow inserts, breakage
-
- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/72—Heating or cooling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2077/00—Use of PA, i.e. polyamides, e.g. polyesteramides or derivatives thereof, as moulding material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
- B29L2031/3002—Superstructures characterized by combining metal and plastics, i.e. hybrid parts
Definitions
- the invention relates to a method for producing a composite component from at least one hollow profile base body and at least one, positioned in the interior of the at least one hollow profile base body, supporting element.
- composite components are already used today in the automotive industry. In most cases, they are made of a metallic tube profile or of a metallic, closed hollow profile, which is connected to at least one separately produced plastic element. The production of two separate components and finally the bonding leads to increased manufacturing and assembly costs.
- additional fasteners in the form of screws, nuts, rivets o.ä. required which usually requires more space and leads to higher weight of the composite component.
- a hollow-chamber composite component which consists of a hollow profile and a one-piece or multi-part support member, wherein the support member is positively connected to the hollow profile by means of thermoplastic material and the positive connection by plastic deformation of at least one hollow profile part during injection molding thermoplastic plastic takes place.
- WO 2006/102047 A1 describes a connection method in which a component is initially inserted into an overlapping second component, then the first component is expanded with an additional method so that the necessary gap for nesting the two components is repealed, then in a third step to connect the two components firmly together in a further process step.
- GB 2350655 A a connection method for connecting two motor vehicle frame segments is described in which the two mutually facing ends of the two tubular segments are pressed radially by the injection pressure of the applied plastic compound and after solidification of Plastic mass, the segments are firmly connected to each other and at the same time a rotation of the same is no longer possible against each other.
- DE 100 14 332 A1 describes a composite component and a method for its production in that a plastic element is injected at different points of a hollow profile base body, preferably produced by means of internal high pressure, in order to partially or completely cover it.
- WO 2008/067901 A1 discloses a method for producing a composite component, wherein a tubular metallic hollow profile is reshaped into a final shape by means of a fluidic internal high-pressure method.
- DE AS 1232332 describes a method and an apparatus for molding an outer annular bead on an elastically deformable plastic pipe.
- DE 10 2005 051 687 A1 teaches a structural component made of plastic and a method for its production, in which the structural component as a base matrix has a plastic with inlaid stiffening element, wherein the stiffening element is positively and / or non-positively connected to the plastic matrix and the connection of the stiffening element to the plastic matrix by means of an adhesion promoter.
- DE 10 2014 019 724 A1 describes a method for the production of structural elements made of functional element and fiber-plastic composite hollow profile in which by optional sequence of insertion of a contouring element and the insertion of a structural element semifinished local heating of the fiber-plastic composite hollow profile is performed in the region of the undercut of the contouring element.
- DE 10 2014 014 296 A1 discloses a hollow profile component made of continuous fiber reinforced thermoplastic material with a load introduction point for the stiffening of which is externally sprayed onto a component wall section a reinforcing element made of a short fiber reinforced plastic.
- EP 0 370 342 A2 describes a lightweight component in which a shell-shaped main body has reinforcement ribs in its interior, the connection of which with the shell-shaped base body via discrete connection points via openings in the base body, through which the plastic extends and beyond the surfaces of the apertures.
- WO 2009/077026 A1 describes a method for producing a composite component from a profile and an injection molding element, wherein the injection molding element is injection molded onto the profile, so that the profile is gripped captively in the circumferential direction, and wherein at least one positive locking element is formed on the profile, which is formed during the Injection is detected by the lying between the ends of the profile positive locking element in the circumferential direction and longitudinal extent limited or molded.
- WO 2009/077026 A1 firstly a hydroforming process is used in a combination tool before an injection molding process is used for attaching the injection-molded elements.
- the successive combination of these two processes, first hydroforming, then injection molding, in a common tool results in a limitation in the minimum dimension of the wall thickness of the profile, which is contrary to a weight reduction in the sense of modern lightweight construction.
- there are restrictions in the design of the joint between the two components which ultimately leads to a significant reduction in the shear strength and shear stiffness of the compound of injection molded component with the profile - hereinafter also hollow profile.
- connection stiffness or bonding strength of the hollow profile and the injection-molded component can therefore only take place according to WO 2009/077026 A1 by arranging several such peripheral lamellae along the profile.
- a minimum distance of several millimeters width must be maintained between two circumferential blades. This distance is generated in the tool by cores. With too small a width of these cores in turn there is the risk of core breakage and bursting of the hollow profile, since in the hydroforming of the tube, the tube wall is both radially expanded, as well as axially displaced on the engraving and the hollow profile must be supported as large as possible. According to WO 2009/077026 A1, therefore, only a proportion of a maximum of 50% can be oversprayed with plastic on a profile surface X of 100% on average.
- the present invention therefore an object of the invention to provide a plastic / hollow profile composite technology for the production of composite components, with the thin-walled hollow sections with injection molded or pressed plastic structures to stiff and mechanically high stress components in the injection molding or pressing process can be connected to each other mass production technology.
- thin-walled means preferably a ratio of the diameter of a hollow profile to its wall thickness in the range from 5: 1 to 300: 1.
- composite components to be produced according to the invention should not have the abovementioned disadvantages in terms of production or disadvantages in the strength and stiffness properties, as well as in the energy absorption behavior, and enable a high degree of functional integration in terms of system or module formation in economic production.
- the object is achieved by a method for producing a composite component by a) providing at least one support element, b) providing at least one hollow profile base body with a diameter to wall thickness ratio in the range from 5: 1 to 300: 1, c) introducing and positioning the at least one a support element within the at least one hollow profile base body at the positions where the plastic is applied outside the hollow profile base body, and fixing the same, d) pressing the hollow profile base body, preferably only in the region of at least one support element positioned in the hollow profile base body, by the action of external forces the Hohlprofilgrund stresses GmbH by a pressing tool to reduce the outer dimension of the hollow profile body by a range of 0.5 to 5% relative to its original seen in the pressing direction outer dimension, e) inserting the at least one support element s f) closing the Spritzg intelligent- or pressing tool and local compression of the hollow profile body in the closing direction of the injection mold or pressing tool at the position or positions at which the axial G) external application of plastic in the form of a melt to
- Hollow profile base body by the injection or pressing pressure only in the region of at least one, positioned in the hollow profile base support member, h) cooling of the hollow profile base in g) applied plastic melt (solidification), and i) removing the finished composite component from the injection mold.
- Pressing according to process steps d), e) and f) means a deformation in which no circumferential extension but only a change in shape is brought about.
- a change in shape is likewise preferably brought about, but then, towards the end of the tool closing movement, again a slight reduction in circumference takes place.
- the present invention therefore also relates to a composite component comprising at least one hollow profile cross-section base body - hereafter hollow profile basic body - and at least one, with the hollow profile base body at discrete connection points positively connected plastic element, and at least one within the hollow profile base body at the discrete connection points of the outside applied, at least one plastic element positioned Support element, and the hollow profile base body has a diameter / wall thickness ratio in the range of 5: 1 to 300: 1.
- the present invention relates to a composite component obtainable by a) providing at least one support element, b) providing at least one hollow profile base body with a ratio of diameter to wall thickness in the range of 5: 1 to 300: 1, c) introducing and positioning the at least one support element within the at least one hollow profile base body at the positions outside of the hollow profile base body of the order of Plastic is done, as well as fixing the same, d) pressing the hollow profile base body, preferably only in the region of at least one positioned in the hollow profile base support member by external forces on the Hohlprofil ground stressesau 7wandung by a pressing tool to reduce the outer dimension of the hollow profile body by a range of 0.5 to 5% relative to its original outer dimension seen in the pressing direction, e) inserting the hollow profile base body containing at least one supporting element into a cavity of an injection molding or pressing tool, f) closing the injection molding or pressing machine kzeugs and local compression of the hollow profile body in the closing direction of the injection mold or pressing tool at the position or positions at
- supporting elements according to the invention must be produced in an upstream step, but these require - as positioned within the at least one hollow profile body - no additional space.
- the whereabouts of the support element or of the support elements can therefore initially be an additional weight for the end product - the composite component - but at the end of the process lead to a lower weight, in particular if therefore hollow profile base body with smaller wall thicknesses can be used, or support element (s) by subsequent removal, in particular by melting, again be removed from the hollow profile body.
- the shape or structuring of the wall of the hollow profile base body resulting in the method according to the invention and thus the wall of the connecting surface of the two components of the composite component is defined or controlled via the shape of the at least one support element.
- the result is a positive connection / toothing of hollow profile base body and molded plastic with the blocking of all degrees of freedom, translational in the X, Y and Z direction and rotational about the X, Y and Z axis and thus a shear-resistant and rigid connection at least in the axial, preferably in the axial and radial directions, based on the hollow profile base body.
- Shear strength is a material constant that describes the resistance of a material to shear, ie, separation by forces that seek to longitudinally displace two adjacent surfaces.
- the shear strength is determined by the shear modulus, also called sliding modulus.
- Shearproof connected to each other means in the context of the present invention in the axial direction, preferably in the axial and radial directions, the hollow profile body shear rigid, positive connection of the hollow profile body with at least one applied to the hollow profile body plastic element.
- the shear stiffness is the product of the shear modulus G of a material and the cross-sectional area. The following applies:
- the cross-section-dependent correction factor ⁇ takes into account the non-uniform distribution over the cross section of the shear stress T. Often the Shear stiffness also expressed using the shear surface A s . See: https://en.wikipedia.org/wiki/Steiftechnik.
- Positive connections in the context of the present invention arise from the intermeshing of at least two connection partners, which enter into a non-detachable connection with each other and separate again only by destroying each other. See: https://de.wikipedia.org/wiki/Veritatistechnik.
- At least one bead preferably a plurality of beads, is introduced from the outside into the wall of the hollow profile base body in the region of the at least one support element, preferably exactly at the position of the at least one support element.
- At least one hole is additionally introduced into the wall of the hollow profile base body in the region of the at least one support element, preferably exactly at the position of the at least one support element, before or during method step b).
- At least one hole preferably a plurality of holes, is introduced from the outside into the wall of the hollow profile base body in the region of the at least one support element, preferably exactly at the position of the at least one support element.
- At least one plastic melt volume is deposited in at least one cavity provided for this purpose in the injection mold or pressing tool and in process step f) the plastic melt volume is localized by closing the injection molding or pressing tool pressed and from the outside against the wall of the hollow profile base body as well simultaneously pressed against the positioned in the hollow profile base body at least one support element, or pressed around the hollow profile base body.
- an additional hydroforming method (IHU) is used to change the shape of the hollow profile base body at the positions at which no support element and no plastic order is. See: https://de.wikipedia.org/wiki/lnnenhoch horrumformen.
- an additional blow molding method for changing the shape of the hollow profile base body is applied to the positions at which no support element and no plastic is on contract.
- the hollow profile base body is deformed at least one position by the action of additional bending forces at positions where no support element and no plastic on contract, is deformed.
- additional bending forces are allowed to act when the final composite component shape deviates from that of a straight hollow profile base body.
- the compound of hollow profile base body and molded plastic with the blocking of all degrees of freedom, translational in the X, Y and Z direction and rotational about the X, Y and Z axis by means of a surface treatment of the outer Wall of the hollow profile body additionally supported.
- This surface treatment is preferably carried out before at least one of the process steps b), c), d) or e).
- Preferred forms of the surface treatment are the application of at least one adhesion promoter, a plasma surface activation, a laser structuring, a chemical pretreatment or an additive application process.
- Preferred chemical pretreatment agents are the use of acids or bases.
- the preferred additive application method is the thermal metal injection method. See: https://de.wikipedia.org/wiki/Thermal_Spritzen. Process step a)
- At least one support element is provided. Of greatest importance for the production of the composite between the thin-walled hollow profile base body and the plastic component to be applied by means of injection molding or pressing in process step g) is provided in process step a) at least one support element and its particular shape or shape.
- the at least one support element to be provided in method step a) serves primarily for the inner support of the thin hollow profile wall.
- the thin-walled hollow profiled basic body to be used according to the invention would be compressed by the injection pressure or pressing pressure in the injection molding or pressing process.
- a support element to be used according to the invention must be present in a shape or design adapted to the internal cross section of the hollow profile base body to be used. Since the person skilled in the art due to the later task of the composite component, the shape and design of the inserted hollow profile base body is known, this will provide appropriate support elements in step a).
- Support elements to be used must support the hollow profile basic body wall against collapse of the hollow profile cross section during the application of plastic in method step g) and in the region of the applied plastic;
- Support elements to be used represent, as it were, the negative mold for the forming regions of the hollow profile basic body wall in the area of the plastic to be applied in process step g);
- optionally used support elements serve as supports of the surfaces of the Hohlprofil ground stresses, at the or the position (s) at which the axial ends of the at least one positioned in the hollow profile base support member, and serve to seal the cavity of the plastic to be applied. Depending on the material of the Hohlprofil ground stresseswandung but even their own support effect of the same may be sufficient.
- the at least one support element to be provided in method step a) also serves as an abutment to a structured wall of a hollow profile base body, which is produced by the injection or pressing pressure of the plastic component.
- the at least one support element is preferably to be positioned exactly at the point in the interior of the hollow profile base body, at which the application of the plastic component to the outer wall of the hollow profile base body in process step g).
- this order is carried out by gating, by encapsulation, by contact pressure or by Umpressung.
- a support element to be used according to the invention is preferably designed such that it
- a pressing of the hollow profile base body in process step d) by external force by a pressing tool preferably at an angle in the range of 45 ° to 135 °, on the Hohlprofil ground stressesau present in the hollow profile body in the direction of pressing by a range of 0.5 to 5 % permits, so that a resistance-free and collision-free insertion of the hollow profile in the injection molding or pressing tool is possible, and that at least one support element is fixed in the hollow profile;
- a deformation as described in 5 is generated in the manner that ultimately after the order of the plastic component on the outer wall of the hollow profile body, preferably in the form of molding, encapsulation, pressing or Umpressen, with the plastic component a rigid, heavy-duty and durable durable positive connection between the hollow profile body and the plastic component is formed; and
- the hollow profile base body has the shape of a tube or tubular shape, preferably at least one cylindrical support element is positioned within the hollow profile base body.
- method step a) it is preferable to use support elements with a through hole which allows the flow of a fluid used in an hydroforming method to be used by the at least one support element.
- support elements with a through hole which allows the flow of a fluid used in an hydroforming method to be used by the at least one support element.
- cylindrical support elements with a bore along their axis so-called hollow cylinders, are particularly preferred.
- a support element to be used according to the invention can be produced by various methods and can consist of different materials.
- the techniques of stamping, deep drawing, plugging, welding, soldering, riveting, casting, die casting or injection molding are used for the production of support elements to be used according to the invention.
- At least one material from the group of metals, thermoplastics, thermosetting plastics and ceramics is used to produce support elements to be used according to the invention.
- Preferred metals are steel, aluminum, magnesium, titanium, tin, bismuth, brass or other alloys.
- the at least one support element to be provided in method step a) is produced from a thermoplastic material.
- a polyamide or a polyester as thermoplastic.
- a polyamide 6 is used as the polyamide.
- the polyester used is preferably a polyalkylene terephthalate, more preferably polybutylene terephthalate.
- the at least one support element is made of a thermoplastic material with at least one filler or reinforcing material.
- glass fibers as filler or reinforcing material.
- 0.1 to 85 parts by mass of filler or reinforcing material are used per 100 parts by mass of the thermoplastic material.
- Support elements based on thermoplastic materials to be used according to the invention are preferably produced by injection molding in a step upstream of the method according to the invention.
- supporting elements to be used according to the invention made of a glass-fiber-reinforced polyamide 6 with 15 to 60 parts by mass of glass fibers per 100 parts by mass of polyamide by injection molding.
- the or the support elements after the production of the composite component to be removed from this again they are after completion of the process step i) in a further process step j) is melted out.
- low-melting metals or alloys are used in this case, which survive the inventive method, but then by higher temperatures, preferably by the action of temperatures in the range of 80 to 220 ° C liquefied and can be removed from the hollow profile body again.
- a support element to be used for this purpose consists of a metal or an alloy which has a melting point below the melting point of the plastic to be used in process step g).
- Tin-bismuth alloys are preferably used.
- DE 4124021 C2 discloses a tin-bismuth alloy having a melting point of 138 ° C.
- Support elements based on thermoplastic materials to be used according to the invention are produced by injection molding in a step upstream of the method according to the invention.
- the at least one support element may be a plastic-metal hybrid, preferably a cylindrical metal tube with sprayed-on plastic ribs.
- the plastic-metal hybrid technology is known to the person skilled in the art, for example from EP 0 370 342 A1.
- At least one hollow profile base body having a diameter / wall thickness ratio in the range from 5: 1 to 300: 1 is provided.
- a hollow profile base body to be used according to the invention can be produced by various processes, have different cross-sectional shapes and consist of different materials. Preferably, at least one of extrusion, pultrusion, extrusion, blow molding, injection molding, seamless drawing, longitudinal welding, helical welding, winding and pultrusion is used for its production.
- the thin-walled hollow profile to be used according to the invention can have a circular, elliptical, or polygonal-triangular, quadrangular, pentagonal, polygonal cross-section.
- a hollow profile base body to be provided in method step b) has a wall thickness in the range of 0.1 and 10.0 mm.
- a hollow profile base body to be used according to the invention preferably has at least two openings, one each at the end faces.
- At least one material from the group of metals, alloys, thermoplastics and thermosetting plastics is used to produce hollow profile base bodies to be used according to the invention.
- Preferred metals are steel, aluminum, magnesium, titanium, tin, zinc, lead, silver, gold, brass or alloys.
- Preferred thermoplastics are polyamides (PA), polybutylene terephthalate (PBT), polyethylene terephthalate (PET), polyethylene (PE), polypropylene (PP) and polyvinyl chloride (PVC). It is particularly preferred to use polyamide or polyester as the thermoplastic material for a hollow profile base body to be used according to the invention. Preferably, a polyamide 6 is used as the polyamide.
- the polyester used is preferably polybutylene terephthalate (PBT) or polyethylene terephthalate, in particular PBT.
- Preferred thermosetting plastics are epoxy resins, crosslinkable polyurethanes or unsaturated polyester resins.
- the hollow profile base body to be provided in process step b) is produced from a thermoplastic material having at least one filler or reinforcing substance.
- a thermoplastic material having at least one filler or reinforcing substance.
- glass fibers as filler or reinforcing material.
- fillers or reinforcing agents in amounts in the range from 0.1 to 85 parts by mass per 100 parts by mass of the thermoplastic polymer.
- plastic-based hollow profile basic bodies those made of a glass fiber-reinforced polyamide 6 with 15 to 60 mass fractions of glass fibers per 100 mass fractions of polyamide by injection molding are particularly preferred.
- metal-based hollow profile basic bodies those made of aluminum or steel, in particular of steel, are particularly preferably used.
- metal tubes in the form of a hollow cylinder are preferably used as the hollow profile base body.
- PA to be used can be synthesized from different building blocks and prepared by various methods and used in a specific application alone or be equipped in a manner known in the art to materials with specially set property combinations.
- PA blends with proportions of other polymers preferably of polyethylene, polypropylene, ABS, wherein optionally one or more compatibilizers can be used.
- the properties of the polyamides can be improved as needed by adding elastomers.
- PA is prepared by polycondensation in the melt, which in the context of the present invention, the hydrolytic polymerization of lactams is understood as polycondensation.
- PA to be used for the hollow profile basic body wall starts from diamines and dicarboxylic acids and / or lactams with at least 5 ring members or corresponding amino acids.
- Suitable starting materials are preferably aliphatic and / or aromatic dicarboxylic acids, particularly preferably adipic acid, 2,2,4-trimethyladipic acid, 2,4,4-trimethyl-adipic acid, azelaic acid, sebacic acid, isophthalic acid, terephthalic acid, aliphatic and / or aromatic diamines, particularly preferred Tetramethylenediamine, hexamethylenediamine, 1,9-nonanediamine, 2,2,4- and 2,4,4-trimethyl-hexamethylenediamine, the isomers diamino-dicyclohexylmethane, diaminodicyclohexylpropanes, bisaminotethylcyclohexane, phenylenediamines, xylylenediamines, aminocarboxylic acids, in particular aminocaproic acid, or the corresponding lactams. Copolyamides of several of the monomers mentioned are included.
- PA of lactams for the hollow-profile main body wall
- caprolactams particular preference being given to using ⁇ -caprolactam.
- PA or prepared by activated anionic polymerization copolyamide with polycaprolactam as the main component can be used according to the invention.
- the activated anionic polymerization of lactams to polyamides is carried out on an industrial scale by preparing on the one hand a solution of catalyst in lactam, optionally with impact modifier, and on the other hand a solution of activator in lactam, usually both solutions are composed so that a combination in the same ratio gives the desired total formulation.
- Other additives may optionally be added to the lactam melt.
- the polymerization is carried out by mixing the individual solutions to form the total formulation at temperatures in the range of 80 ° C to 200 ° C, preferably at temperatures in the range of 100 ° C to 140 ° C.
- Suitable lactams are cyclic lactams having 6 to 12 C atoms, preferably laurolactam or ⁇ -caprolactam, particularly preferably ⁇ -caprolactam.
- the catalyst is an alkali metal or alkaline earth metal lactamate, preferably as a solution in lactam, particularly preferably sodium caprolactamate in ⁇ -caprolactam.
- N-acyl lactams or acid chlorides or, preferably, aliphatic isocyanates, more preferably oligomers of hexamethylene diisocyanate can be used. Both the pure substance and preferably a solution, preferably in N-methylpyrrolidone, can serve as the activator.
- polyamides having a number of amino end groups in the range from 25 to 90 mmol / kg, preferably in the range from 30 to 70 mmol / kg, very particularly in the range from 35 to 60 mmol / kg, are particularly suitable for the hollow profile basic body wall.
- semicrystalline polyamides or compounds based thereon are used as the matrix polymer for the hollow profile basic body wall.
- partially crystalline polyamides have a melting enthalpy in the range from 4 to 25 J / g, measured by the DSC method according to ISO 1 1357 during the second heating and integration of the melt peak.
- amorphous polyamides have a melting enthalpy of less than 4 J / g, measured by the DSC method according to ISO 1 1357 at the 2nd heating and integration of the melting peak.
- PA to be used according to the invention for the hollow profile basic body wall is available as PA6 [CAS No. 25038-54-4] or as PA66 [CAS No. 32131 -17-2] from Lanxess Deutschland GmbH, Cologne, under the name Durethan®.
- At least PE is used as thermoplastic for the hollow profile basic body wall.
- Polyethylene [CAS No. 9002-88-4] is a semi-crystalline and nonpolar thermoplastic.
- linear low-density polyethylene linear low density polyethylene
- LLDPE linear low density polyethylene
- Very particularly preferred according to the invention are HDPE or LDPE.
- At least PP is used as the thermoplastic for the hollow profile basic body wall.
- PP [CAS No. 9003-07-0] is a semi-crystalline thermoplastic and belongs to the group of polyolefins. Polypropylene is obtained by polymerization of the monomer propene with the aid of catalysts.
- At least PC is used as thermoplastic for the hollow profile basic body wall.
- polycarbonates based on 2,2-bis (4-hydroxyphenyl) propane (bisphenol A), bis (4-hydroxyphenyl) sulfone (bisphenol S), dihydroxydiphenyl sulfide, tetramethylbisphenol A, 1,1-bis (4-hydroxyphenyl ) -3,3,5-trimethylcyclohexane (BPTMC) or 1,1,1-tris (4-hydroxyphenyl) -ethane (THPE).
- BPTMC 1,1-bis (4-hydroxyphenyl) -3,3,5-trimethylcyclohexane
- THPE 1,1,1-tris (4-hydroxyphenyl) -ethane
- PC based on bisphenol A.
- PC to be used according to the invention is obtainable, for example, under the name of Makroion® from Covestro AG, Leverkusen.
- At least PBT [CAS No. 24968-12-5] is used as thermoplastic for the hollow profile basic body wall.
- PBT is formed by polycondensation of the intermediate bis (4-hydroxybutyl) terephthalic acid ester. The latter can be obtained by esterification of 1, 4-butanediol and terephthalic acid or by catalytic
- PBT Tetraisopropyltitanat
- PBT contains at least 80 mol%, preferably at least 90 mol%, based on the dicarboxylic acid, terephthalic acid residues and at least 80 mol%, preferably at least 90 mol%, based on the diol component, butanediol-1, 4-glycol residues.
- PBT to be used according to the invention is obtainable, for example, under the name Pocan® from Lanxess Deutschland GmbH, Cologne.
- PET is used as the thermoplastic for the hollow profile basic body wall.
- PET is a polycondensation-produced thermoplastic polymer from the family of polyesters based on the monomers ethylene glycol and terephthalic acid.
- PET contains at least 80 mol%, preferably at least 90 mol%, based on the dicarboxylic acid, terephthalic acid residues and at least 80 mol%, preferably at least 90 mol%, based on the diol component, ethylene glycol.
- PVC polyvinyl styrene resin
- CAS No. 9002-86-2 is used as thermoplastic for the hollow profile basic body wall.
- PVC polyvinyl styrene resin
- PVC-U Hard PVC
- PVC pipes as hollow profile base body are available, for example, from ThyssenKrupp Plastics Germany, Cologne.
- method step c) the introduction and the exact positioning of the at least one support element takes place within the at least one hollow profile base body at the positions at which the application of plastic will take place in method step g).
- method step c) is carried out with the proviso that the circumference of the hollow profile base body does not undergo expansion.
- support elements are used whose outer dimension or outer cross-sectional shape corresponds congruent to the inner dimension or the inner cross-sectional shape of the hollow profile base body.
- congruent means that the shape and the dimensions of the outwardly directed surfaces of a support element of the shape and the dimensions correspond as far as possible to the inwardly directed surfaces of a hollow profile base body to be used according to the invention.
- the inner surface of a hollow profile base body to be used according to the invention and the outer surface have a support element to be used according to the invention, preferably along their common contact surface (s) approximately equal distances from each other.
- support elements which correspond in their outer contours as possible on all sides of the inner shape of a hollow profile base body to be used according to the invention and thereby have an approximately congruent structure to the inner wall of the hollow profile base body.
- the congruence relates to the internal dimension or the internal cross-sectional shape of the at least one hollow profile base body provided in b).
- Approximately equal distances mean deviations in the congruence in the range of -1.5 to +3% between the outer dimension or the outer cross-sectional shape of a support element and the inner dimension or the inner cross-sectional shape of a hollow profile main body to be used according to the invention.
- the hollow section base body is pressed by external forces acting on the hollow profile main body outer wall by a pressing tool to reduce the outer dimension of the hollow profile base body by a range of 0.5 to 5% relative to its original outer dimension in the pressing direction.
- the outer circumference of the hollow profile base remains this process is the same, but its outer dimension in the direction of the pressing process by the deformation is reduced by the specified range of 0.5 to 5%.
- the pressing of the hollow profile base body preferably takes place in the region of the at least one support element positioned in the hollow profile base body or in the region of the support elements positioned in the hollow profile base body.
- the pressing takes place by the action of a pressing tool on the outer wall of the hollow profile base body at an angle in the range of 45 ° to 135 ° relative to the loading direction of the hollow profile base body in an injection mold or pressing tool.
- the pressing tool acts at an angle in the range of 70 ° to 1 10 °, in particular at an angle of 90 °, on the outer wall of the hollow profile base body.
- the pressing of the hollow profile body is carried out to the extent that a resistance-free and collision-free insertion of the hollow profile body into the injection mold or pressing tool is possible.
- positioned support elements are fixed within the hollow profile base body.
- pressures are to be used which deform the wall of the hollow profile base body but do not damage or destroy the support elements positioned within it. Decisive therefore are the selection of a suitable material for the Hohlprofilgrund stresses and a hollow profile body shape, which allows sufficient elongation before the breaks at least one support element, but nevertheless sufficiently supported the hollow profile body from the inside.
- the hollow profile base body pressed in method step c) is inserted into a cavity of an injection molding or pressing tool.
- the design of the injection molding or pressing tool is therefore also important, so that the method according to the invention, in particular the insertion and sealing of the injection molding or pressing cavity, works without problems.
- the insertion of the hollow profile body in the cavity is carried out in contrast to the prior art without a widening of the same takes place.
- the sealing of the joint between the hollow profile base body and the cavity of the molding tool, which adjoins the hollow profile base body section provided with plastic, takes place solely by changing the shape of the circumference of the hollow profile base body, the circumference itself remaining the same.
- a change in shape preferably takes place to form an ellipse.
- the change in shape preferably takes place to a round circumference.
- the ratio of the circumference of the hollow profile base body to the inner circumference of the tool cavity of the molding tool is in the range of 1: 1 to 1, 1: 1. It is extremely surprising for a person skilled in the art that even with a tolerance-related excess of the circumference of the hollow profile base body relative to the inner periphery of the mold cavity, the gap or joint is reliably closed and thus sealed for the injection molding, and by tolerance-related excess, conditional excess material in the Parting planes of the injection mold is not pressed into it.
- the injection molding or pressing tool to be used according to the invention and also the hollow profiled base body to be used according to the invention have the following features so that the latter can be inserted into the respective tool with all its dimensional and shape tolerances without compulsion:
- the injection molding or pressing tool must be such that it seals the injection molding or pressing cavities to the areas of the hollow profile base body in which no application of plastic will take place when closing the tool.
- the injection molding or pressing tool at the axial ends of the injection molding or pressing cavities contact surfaces in the tool necessary to compress the hollow profile base during closing of the tool in its original, prior to step d) existing form against the introduced in step c) support element ,
- the contact surfaces of the at least two mold halves to the hollow profile body in the injection molding or pressing tool are designed so that the hollow profile body about the compression described in A. addition to its original prior to process step d) existing form by a range of 0.01 to 1% is additionally pressed.
- the contact surfaces of the at least two tool halves in the injection molding or pressing tool mentioned in A. and B. include the hollow profile base body closed tool in its entire circumference and preferably have a width, ie an extent seen in the axial direction of the hollow profile base body, in the range of 1, 0 to 10.0 mm.
- the contact surfaces of the at least two mold halves to the hollow profile base body in the injection molding or pressing tool are designed so that these areas are represented in the tool by hardened inserts.
- the tool must provide clearance around the hollow profile base between its contact surfaces outside the injection or press cavities. Preferably, this clearance is in the range of 1, 0 to 10.0 mm.
- the cured inserts used in D. preferably have a Rockwell hardness in the range of 50 to 62 HRC.
- the hardness is in the range of conventional bending and punching tools. See: https://en.wiki pedia.org/wiki/Rockwell_(unit).
- step f) closing of the injection molding or pressing tool and pressing of the hollow profile base body in the closing direction takes place laterally on the contact surfaces described under method step e) of the injection molding or pressing cavity and thus the sealing of the injection molding or pressing cavity.
- closing of the injection molding or pressing tool takes place at the or the position (s) at which the axial ends of at least one support element, a slight compression of the hollow profile body against the at least one support element and in step d) slightly compressed form of Hollow profile body is returned to its original, before process step d) existing form.
- the hollow profile base body is held clearly in the cavity of the injection molding or pressing tool in method step f), and the cavities on the hollow profile intended for injection molding or for pressing are sealed.
- a pressing force is needed to return the hollow profile base back to its original shape and a closing force for the injection molding process to seal the cavity.
- the height of the pressing force depends on the shape of the provided in step b) at least one Hollow profile base body and according to the shape of the provided in step a) at least one support element.
- the shape, dimensions and material properties of hollow profile base body and support element (s) are crucial for the preliminary calculation of the pressing force to be applied, which the expert must take into account when designing the process according to the invention.
- the height of the closing force of the tool depends on the projected area of plastic encasements or plastic pressings intended by plastic application and the injection pressures required to inject or compress the corresponding plastics in process step g). In one embodiment, the pressing force to be applied is below the closing force of the injection molding process.
- the local application of plastic in the form of a melt to the outer wall of the hollow profile base body takes place only in the region of the at least one support element positioned in the hollow profile base body and deformation of the hollow profile base body by the injection or pressing pressure only in the region of the at least one positioned in the hollow profile base body support element.
- the deformation is a direct consequence of the applied injection or compression pressure. How strongly the deformation is pronounced depends on the height of the pressure and the wall thickness and on the wall material of the hollow profile, as well as on the shape of the at least one support element positioned within the hollow profile base body. (Size of the wall surface that is not supported by the support element). With several similar support elements and assuming the pressure along the hollow profile base body is sufficiently high and almost equal, can always adjust the same deformation along the hollow profile body.
- the shape limitation of the deformation is defined by the support element.
- the pressures, temperatures and volumes to be used in method step g) depend on the plastic materials used and on the geometry of the cavity (s) to be filled with plastic, which the person skilled in the art must take into account in advance when designing the process according to the invention.
- the tool contact surfaces described in method step e) By pressing the hollow profile base body by means of the tool contact surfaces described in method step e) during the closing of the injection molding or pressing tool, a seal against the escape of the plastic melt to be applied in g) between the plastic overspray and the non-overmolded is achieved Achieved areas of the hollow profile in the mold cavity.
- the tool contact surfaces are configured such that these regions are represented in the tool by hardened inserts.
- hardened tool inserts described in method step e) under point D. is used in method step g) to reduce the wear of the tool contact surfaces since these are the only contact points between the injection molding or pressing tool and the hollow profile base body and the hardened tool inserts have a significantly higher hardness than the material of the hollow profile body.
- the at least one support element within the hollow profile body builds up a sufficient back pressure to the pressure generated by the tool contact surfaces on the outer wall of the hollow profile base body and thus seals the tool contact surfaces or the cavity against any emerging Plastic mass.
- the application of plastic to the at least one hollow profile base body takes place in process step g), preferably by injection molding or extrusion.
- the injection molding is the main group 2, assigned to the original forms. It is particularly suitable for mass-produced articles, since the raw material is usually converted into a finished part in one operation. The rework is small or can be completely eliminated and even complicated shapes and contours can be made in one operation.
- Injection molding as a manufacturing process in plastics processing is known in principle to those skilled in the art; see https://de.wikipedia.org/wiki/Spritzgie%C3%9Fen.
- injection molding the plastic to be processed is liquefied (plasticized) with an injection molding machine and injected into a mold, the injection mold, under pressure.
- the material reverts to the solid state by cooling or by a crosslinking reaction and is removed as a finished part after the tool has been opened.
- the cavity, the cavity of the tool determines the shape and the surface structure of the solidified plastic order in the composite component.
- Injection molding in particular extended special procedures, allows a nearly free choice of shape and surface structure such.
- An injection molding apparatus comprises at least the following components: 1. Screw 2. hopper 3. granules 4. plasticizing cylinder 5. heating elements 6. tool.
- steps 1 take place. Plasticizing and dosing, 2. injection, 3. pressing and cooling, and 4. demolding.
- thermoplastic plastic trickles in the form of granules in the gears of a rotating screw.
- the granules are conveyed in the direction of the screw tip and heated and melted by the heat of the cylinder and the heat of friction, which arises during the cutting and shearing of the material.
- the melt collects in front of the screw tip, since the outlet nozzle is initially closed. Since the screw is axially movable, it gives way to pressure, and also screws out of the mass like a corkscrew.
- the backward movement is braked by a hydraulic cylinder or electrically, so that builds up a back pressure in the melt.
- This dynamic pressure in conjunction with the screw rotation compresses and homogenizes the plastic to be sprayed as injection molding material.
- the screw position is measured and as soon as one for the
- the injection unit In the injection phase, the injection unit is moved to the closing unit, pressed with the outlet nozzle and set the screw back pressure.
- the melt is forced under high pressure, preferably at a pressure in the range of 500 to 2000 bar, through the open outlet nozzle and the sprue or the sprue system of the injection mold into the shaping cavity.
- a backflow preventer prevents a backflow of the melt in the direction of the hopper.
- an attempt is made to achieve a laminar flow behavior of the melt which is as laminar as possible. That is, the melt is instantly cooled in the mold where it touches the cooled mold wall and remains solidified "sticking."
- the advancing melt is forced through the thereby tapered melt channel at even higher speed and more shear deformation, and at the front of the melt front
- the high injection speed produces a shear rate in the melt which makes the melt flow more easily, and rapid injection is not desirable since the high shear rate also causes a degradation of the molecule within
- the surface of the product, its appearance and finally the state of orientation of the plastic molecules are also influenced by the injection phase
- the tool is colder than the plastic mass, preferably, the tool has a temperature in the range of 20 to 120 ° C and the plastic mass preferably has a temperature in the range of 200 to 300 ° C, cools the melt in the mold and solidifies upon reaching the solidification point of the particular plastic used, preferably the thermoplastic or the thermoplastic-based compounds.
- the cooling is accompanied by a volume shrinkage, which adversely affects the dimensional stability and surface quality of the product to be manufactured, in the present invention of the form-fitting connected plastic element to be produced in process step g).
- a reduced pressure is maintained even after filling the mold so that plastic material can flow in and compensate for the shrinkage. This pressing can be done until the sprue is solidified.
- the outlet nozzle can be closed and begin in the injection unit already the plasticizing and dosing for the next molding.
- the plastic material in the mold continues to cool in the remaining cooling time, until the core, the liquid core of the workpiece, is solidified and sufficient rigidity for demolding is achieved. This process is also referred to as solidification and is carried out according to the invention in process step h).
- the injection unit can then be moved away from the closing unit, since no more plastic can escape from the sprue. This serves one To prevent heat transfer from the warmer exit nozzle to the colder gate.
- the ejector side of the closing unit opens and the workpiece is ejected through pins penetrating into the cavity and either falls down (bulk material) or is removed from the tool by handling devices and deposited in an orderly manner or fed directly to further processing.
- the sprue must either be removed by separate machining or be automatically removed during demolding. Angeless injection molding is also included
- Hot runner systems in which the sprue system constantly above the solidification temperature of the plastic used, preferably thermoplastics, thermosets or compounds, remains, and the material contained can thus be used for the next shot, possible. extrusion
- the extruding belongs to DIN 8583 for pressure forming, and thus also to the family of forming processes. Extrusion is a massive forming process that produces both hollow and solid bodies through a single-stage or multi-stage manufacturing process. See: https://en.wikipedia.org/wiki/Flie%C3%9Fpressen.
- the material is made to flow under the action of a high pressure in this method.
- a stamp presses the blank by a shaping, reduced in cross-section, tool opening - a die.
- the forming takes place depending on the material and component shape at half-warm or warm room temperature. It is then each of cold extrusion (cold forming), semi-warm extrusion or hot extrusion (hot forming) spoken. Especially in the cold forming a high dimensional accuracy and surface quality of the component to be produced is achieved.
- cold forming cold extrusion
- hot forming hot extrusion
- the blank is heated before forming.
- the Dimensional accuracy is lower and the surfaces become rough due to scale formation (post-processing required).
- Extrusion molding with rigid tools is divided into, depending on the direction of flow
- the required pressure preferably in the range of 15,000 to 20,000 bar, is achieved by means of a pump or press.
- plastics to be used are preferably thermoplastics or thermosets, more preferably thermoplastics.
- thermoplastics are polyamides (PA), polybutylene terephthalate (PBT), polyethylene terephthalate (PET), polyethylene (PE), polypropylene (PP) and polyvinyl chloride (PVC). It is particularly preferred to use polyamide or polyester as the thermoplastic material for a hollow profile base body to be used according to the invention. Preferably, a polyamide 6 is used as the polyamide. Polybutylene terephthalate (PBT) or polyethylene terephthalate, in particular PBT, is preferably used as the polyester. used.
- Preferred thermosetting plastics are epoxy resins, crosslinkable polyurethanes or unsaturated polyester resins.
- the thermoplastic or thermoset is used in the form of a compound.
- Compounding is a term from the field of plastics technology, which describes the processing of plastics by admixing additives, preferably fillers, additives, etc., in order to achieve desired property profiles.
- the compounding is preferably carried out in extruders, particularly preferably in co-rotating twin-screw extruders, counter-rotating twin-screw extruders, as well as by planetary roller extruder and co-kneader and includes the process operations conveying, melting, dispersing, mixing, degassing and pressure build-up; see: https://de.wikipedia.org/wiki/Compoundmaschine.
- Compound is therefore termed a filler or additive mixed thermoplastics or thermosets.
- the plastic to be provided in process step g) is produced on a support made of a thermoplastic material with at least one filler or reinforcing material.
- a support made of a thermoplastic material with at least one filler or reinforcing material Preference is given to using glass fibers as filler or reinforcing material. Particular preference is given to using fillers or reinforcing agents in amounts in the range from 0.1 to 85 parts by mass per 100 parts by mass of the thermoplastic polymer. Very particular preference is given to using glass fibers as filler or reinforcing material. Particular preference is given to using fillers or reinforcing agents in amounts in the range from 15 to 60 parts by mass per 100 parts by mass of the thermoplastic.
- a plastic on contract from a glass fiber reinforced polyamide 6 with 15 to 60 mass fractions of glass fibers per 100 mass fractions of polyamide by injection molding is particularly preferred.
- the melt of a plastic to be applied in process step g) can also be produced from a thermosetting plastic. Epoxy resins, crosslinkable polyurethanes and unsaturated polyester resins are preferably used in this case.
- the application of a plastic in process step g) is carried out with a thermosetting plastic with at least one filling or reinforcing material.
- a thermosetting plastic with at least one filling or reinforcing material.
- preference is given to using glass fibers or carbon fibers as filling or reinforcing material.
- Particular preference is given to using 100 parts by mass of the thermosetting plastic 10 to 50 parts by mass of glass fibers or carbon fibers as filler or reinforcing material.
- in process step g) by the injection pressure of the injection molding process or pressing pressure of Extrusion process local deformations, preferably beads, formed on the thin wall of the hollow profile body. These deformations or beads can have an additional positive influence on the strength of the connection of the hollow profile base body with the plastic element to be externally applied to the hollow profile base body.
- the degree of deformation of local deformations achieved in method step g) on the hollow profile base body, preferably in the form of beads, on the hollow profile basic body wall is limited in one embodiment of the present invention by the breaking elongation of the respective material of the hollow profile base body. If this is exceeded, it may come to tearing the Hohlprofil ground phenomenon.
- the elongation can be limited by controlling the injection or pressing pressure, or by the shape of the negative form of the support element, in the sense of a limit of travel / deformation, which is too great a deformation, d. H. Elongation of the material does not allow or limits.
- the deformation of the material composition and the strength of the Hohlprofilgrund endeavorwandung depends.
- thermoplastic material as the material of the hollow profile basic body or the hollow profile basic body wall
- a local heating of the hollow profile base body can take place at least exactly at the position or at the positions where the local application of plastic in the form of a melt on the hollow profile base body only in the region of at least one, takes place in the hollow profile body positioned support member.
- the breaking elongation of the material can be increased.
- process step h the cooling of the plastic overspray, which is also referred to as solidification, takes place.
- solidification describes the solidification of the molten plastic applied in process step g) by cooling or by chemical crosslinking to form a solid.
- functional elements, structures and surfaces can be applied directly to the hollow profile base body in this way.
- a closed plastic ring with a structured inner surface which exactly the positive image of the bead structure of the outer wall of the hollow profile base body, preferably of the metal tube.
- Process step i) In process step i), the finished composite part is removed from the injection mold, after solidification of the plastic melt, the pressure in the plastic on contract no longer exists and the pressing and closing force is reduced with the opening of the tool. Further details have already been described above under demolding.
- Composite components to be produced according to the invention are preferably used in a corresponding design for motor vehicle construction, in particular in the automotive industry.
- these are body parts, in particular a so-called Cross Car Beam (CCB), also referred to as dashboard.
- CB Cross Car Beam
- Fixture holders are known, for example, from US 5934744 A or US 8534739 B.
- the composite component according to the invention stiffen and reinforce the hollow profile base body and in step g) by means of a plastic melt applied plastic elements mutually. Furthermore, the plastic elements applied in process step g) to the outer wall of the hollow profile base body also serve for functional integration in the sense of system or module formation for the connection of plastic structures or plastic surfaces.
- Preferred embodiments of a composite component to be produced according to the invention have either beads or similar deformations and / or bores or similar openings in the hollow profile base body.
- the invention preferably relates to a composite component in which the wall of the hollow profile base body in the region of the at least one support element and the at least one plastic element has beads or similar deformations.
- the invention preferably relates to a composite component in which the wall of the hollow profile base body has holes or similar openings in the region of the at least one support element and the at least one plastic element.
- the invention also preferably relates to a composite component in which the wall of the hollow profile base body in the region of the at least one support element and the at least one plastic element has beads or similar deformations and holes or similar openings.
- the present invention further relates to a composite component obtainable by a) providing at least one support element, b) providing at least one hollow profile base body with a ratio of diameter to wall thickness in the range of 5: 1 to 300: 1, c) introducing and positioning the at least one support element within the pressing of the hollow profile base body, preferably only in the region of the at least one support element positioned in the hollow profile base body, by acting on outside forces on the Hohlprofil ground stresses <extra_id_3> by the at least one hollow profile base body at the positions where outside of the hollow profile base body a pressing tool with reduction of the outer dimension of the hollow profile base body by a range of 0.5 to 5% relative to its original external dimension seen in the pressing direction, e) inserting the at least one support element containing hollow profile body in a cavity of a Spritzg intelligent- or pressing tool, f) closing the Spritzg intelligent- or pressing tool and local compression of the hollow profile body in the closing direction of the injection mold or pressing tool at the position or positions at which the axial ends g
- a hollow profile basic body made of metal is provided.
- Embodiment 1 is described below: Embodiment 1
- Composite component of a hollow profile base body and at least one plastic element wherein the hollow profile base body has at least one positioned within the hollow profile base support member which is positioned at the point where the plastic element completely or partially surrounds the hollow profile base body and the hollow profile base body between the at least one support element and the at least one Plastic element has beads or similar deformations.
- Composite component of a hollow profile base body and at least one plastic element wherein the hollow profile base body has at least one positioned within the hollow profile base support member which is positioned at the point where the plastic element completely or partially surrounds the hollow profile base body and the hollow profile base body between the at least one support element and the at least one plastic element has holes or similar openings injected plastic.
- Composite component of a hollow profile base body and at least one plastic element wherein the hollow profile base body has at least one positioned within the hollow profile base support member which is positioned at the point where the plastic element completely or partially surrounds the hollow profile base body and the hollow profile base between the at least one support member and the at least one Plastic element has beads or similar deformations and holes or similar openings with injected plastic.
- Fig. 1 shows the essential components of a composite part according to the invention, wherein 1 stands for the hollow profile base body, here in the embodiment of a tube, 2 for an example according to the inner tube diameter adapted support member and 3 for a form-fitting connected to the hollow profile base plastic element.
- Fig. 2 shows variations of support elements 2 in cylindrical form which are positioned within a hollow profile body in the form of a tube.
- the support elements shown here have a through opening from top to bottom, whereby these support elements allow the flow of the case of an optionally additionally applicable hydroforming process for use coming fluid through the support element.
- FIG. 3 shows, on the one hand, a composite component according to the invention in accordance with embodiment 1 described above, wherein the wall of the hollow profile base body 1 has a structuring with beads 4 predetermined by the structure of the support element 2, which, on the other hand, as shown in the further illustration with closed hollow profile base body, also after mechanical Remain the removal of the plastic element 3 in the hollow profile base body 1.
- Fig. 4 shows an alternative to Fig. 3 embodiment of a hollow profile body 1 in the form of a tube with a plurality of holes 5, and in a cutaway view of a plastic on contract 3 fixed to the outer wall of the hollow profile base support member 2 by the plastic by the Holes through enters predetermined areas of the support member 2 and hardens or solidifies therein. 4 thus represents a composite component according to the embodiment 2 described above.
- FIG 5 shows a composite component according to the invention according to the embodiment 3 described above, in which the hollow profile base body 1 has both a multiplicity of beads 4 and a multiplicity of holes 5.
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- Engineering & Computer Science (AREA)
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Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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EP16206664 | 2016-12-23 | ||
EP17182929 | 2017-07-25 | ||
PCT/EP2017/083190 WO2018114731A1 (de) | 2016-12-23 | 2017-12-18 | Hohlprofil-verbundtechnologie |
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EP3558620A1 true EP3558620A1 (de) | 2019-10-30 |
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US (1) | US20200061887A1 (de) |
EP (1) | EP3558620A1 (de) |
KR (1) | KR20190098969A (de) |
CN (1) | CN110099779A (de) |
WO (1) | WO2018114731A1 (de) |
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ES2826437T3 (es) * | 2017-03-03 | 2021-05-18 | Lanxess Deutschland Gmbh | Tecnología de materiales compuestos de perfil hueco |
EP3715083A1 (de) | 2019-03-28 | 2020-09-30 | LANXESS Deutschland GmbH | Hohlprofil-verbundtechnologie |
DE102019121725A1 (de) * | 2019-08-13 | 2021-02-18 | Lanxess Deutschland Gmbh | Verbindung aus einem Metallrohr und einer Kunststoffkomponente |
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US8534739B2 (en) | 2011-05-27 | 2013-09-17 | Ford Global Technologies, Llc | Cross car beam assembly including reinforced polymerized elements |
DE102011084519A1 (de) | 2011-10-14 | 2013-04-18 | Evonik Industries Ag | Verwendung einer Mehrschichtfolie für die Herstellung photovoltaischer Module |
DE102013220211A1 (de) * | 2013-10-07 | 2015-04-09 | Greiner Tool.Tec Gmbh | Verbundprofil, Verstärkungsband für ein Verbundprofil und ein Verfahren zurHerstellung eines Verbundprofils |
DE102014019724A1 (de) | 2014-03-17 | 2015-09-17 | Technische Universität Dresden | Verfahren zur Herstellung von Strukturelementen aus Funktionselement und Faser-Kunststoff-Verbund-Hohlprofil und Strukturelemente |
DE102014014296A1 (de) | 2014-09-25 | 2016-03-31 | Audi Ag | Hohlprofilbauteil aus einem faserverstärkten thermoplastischen Kunststoff |
-
2017
- 2017-12-18 EP EP17826186.3A patent/EP3558620A1/de not_active Withdrawn
- 2017-12-18 WO PCT/EP2017/083190 patent/WO2018114731A1/de unknown
- 2017-12-18 CN CN201780080015.5A patent/CN110099779A/zh not_active Withdrawn
- 2017-12-18 US US16/463,173 patent/US20200061887A1/en not_active Abandoned
- 2017-12-18 KR KR1020197017562A patent/KR20190098969A/ko unknown
Also Published As
Publication number | Publication date |
---|---|
WO2018114731A1 (de) | 2018-06-28 |
CN110099779A (zh) | 2019-08-06 |
KR20190098969A (ko) | 2019-08-23 |
US20200061887A1 (en) | 2020-02-27 |
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