[go: up one dir, main page]

WO2011095536A1 - Procédé de fabrication d'un élément de revêtement d'un véhicule, dispositif correspondant ainsi qu'élément de revêtement - Google Patents

Procédé de fabrication d'un élément de revêtement d'un véhicule, dispositif correspondant ainsi qu'élément de revêtement Download PDF

Info

Publication number
WO2011095536A1
WO2011095536A1 PCT/EP2011/051543 EP2011051543W WO2011095536A1 WO 2011095536 A1 WO2011095536 A1 WO 2011095536A1 EP 2011051543 W EP2011051543 W EP 2011051543W WO 2011095536 A1 WO2011095536 A1 WO 2011095536A1
Authority
WO
WIPO (PCT)
Prior art keywords
plate
edge
frame
injection molding
pressed
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.)
Ceased
Application number
PCT/EP2011/051543
Other languages
German (de)
English (en)
Inventor
Frank Heisler
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.)
TAKEO GmbH
Original Assignee
TAKEO 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 TAKEO GmbH filed Critical TAKEO GmbH
Publication of WO2011095536A1 publication Critical patent/WO2011095536A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • 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
    • B29C45/14778—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 article consisting of a material with particular properties, e.g. porous, brittle
    • B29C45/14811—Multilayered 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
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/0038—Moulds or cores; Details thereof or accessories therefor with sealing means or the like
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • B29C43/20—Making multilayered or multicoloured articles
    • B29C43/203—Making multilayered 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
    • 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
    • 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
    • B29C45/14262—Clamping or tensioning means for the insert
    • 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
    • B29C45/14336—Coating a portion of the article, e.g. the edge of the article
    • 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
    • B29C45/14778—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 article consisting of a material with particular properties, e.g. porous, brittle
    • B29C45/14786—Fibrous material or fibre containing material, e.g. fibre mats or fibre reinforced material
    • 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
    • B29C2045/1486—Details, accessories and auxiliary operations
    • B29C2045/14868—Pretreatment of the insert, e.g. etching, cleaning
    • B29C2045/14877—Pretreatment of the insert, e.g. etching, cleaning preheating or precooling the insert for non-deforming purposes
    • 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
    • B29C2791/00—Shaping characteristics in general
    • B29C2791/001—Shaping in several steps
    • 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
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/02—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means
    • B29C33/04—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means using liquids, gas or steam
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/36—Moulds for making articles of definite length, i.e. discrete 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/52—Heating or cooling
    • 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
    • B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
    • B29C67/0044—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00 for shaping edges or extremities
    • 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
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/25—Solid
    • B29K2105/253—Preform
    • B29K2105/256—Sheets, plates, blanks or films
    • 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
    • B29L2031/3005—Body finishings
    • 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
    • B29L2031/3005—Body finishings
    • B29L2031/3041—Trim panels

Definitions

  • the invention relates to a method for producing a trim part for a vehicle, to a corresponding device and to such a trim part.
  • Covering parts are used in a variety of ways, especially in vehicle construction such as wheel arch liners or underbody cladding.
  • such parts also assume acoustic damping and damping functions, including sound absorption and sound insulation.
  • calendered plates having a monolayer or multilayer structure for this purpose, corresponding to the specific geometries and functional requirements, the latter comprising, for example, a core layer with glass fibers embedded in polypropylene (PP) as well as a top and a top cover layer.
  • PP polypropylene
  • Such panels are heated in a furnace according to a prior art method, wherein the material or materials become flowable by the heat and the glass fibers set up so that the panel swells.
  • the plate can then be mechanically or manually grasped and placed in a pressing tool in which it is pressed into its three-dimensional shape. After removal from the pressing tool, the plate cools and solidifies. Subsequently - or still in the warm state - the deformed plate is cut into its intended for installation final shape and optionally encapsulated with a narrow plastic edge.
  • a disadvantage of this and other known methods is that the plates must be cut depending on the application. This results in a large waste, which causes high costs. It is an object of the present invention to provide a method for producing a trim part, a corresponding device and such a trim part available, in which the disadvantages of the prior art are avoided.
  • the advantages of the invention can be seen, in particular, in that the said edge of the plate containing at least one plastic is preformed under the influence of temperature before the plate is pressed into its final shape and the edge is subsequently injection-molded.
  • plastic-containing plates which may in particular contain textile material.
  • the edge of the board only has to be cut very little before spraying or only in exceptional cases or - with special advantage - no longer at all. Rather, prefabricated, geometrically advantageous cut sheets (one or more) can be used, which must be inserted into the frame and then no longer need to be cut or recut, the trim part only gets its final circumferential geometry by the molded edge. This may differ substantially from the peripheral geometry of the at least one plate, so occupy surfaces of which no or only a smaller part with the previously clamped in the frame edge is identical.
  • the preforming of the plate edge which is a special feature of the invention, in a three-dimensionally curved frame, preferably surrounding the at least one plate, makes it possible to give the plate a three-dimensionally defined preform at the edge, which is also completely or completely in the end product almost preserved. In this way, the plate edge can be bent, for example, with one or more relatively narrow radii, which increases the versatility considerably.
  • the plate edge is given by the preforming its final, at least rough shape with possibly large bulges, while the more inner areas can be pressed after the edge molding in their finer final shape.
  • the edge geometry of the plate is thus essentially obtained during a preforming (first shaping), whereas the configuration of the inner plate regions is obtained in a final shaping (second shaping).
  • this also includes embodiments which, in addition to three-dimensionally curved sections, also have one or more planar sections.
  • the term furnace refers to devices for heating the plates used for the lining part according to the invention.
  • devices with one or more heating fields which can also have different heating powers, are understood here.
  • the ovens can accommodate the plates in particular horizontally or vertically.
  • the at least one plate may contain one or more plastics or plastic mixtures with or without additionally introduced materials, for example artificial and / or natural fibers. These variants are all included in the term "plastic containing”.
  • the plate edge is both heated and preformed in a furnace and at the same time the inner plate portions are heated to be subsequently, i. after forming the plate edge, to press into its final shape.
  • a furnace can be used for the heating of the plate edge and the inner plate areas.
  • the steps a) and b) are carried out according to the claim 1 at the same time. But this is not necessarily so; a sequential step execution is possible.
  • the plate edge is pressed into its three-dimensional preform before the inner areas of the plate are heated.
  • the frame is preferably constructed at least in two parts.
  • the at least one - pre-cut and in most cases flat - plate is here inserted into a first frame part, so that subsequently the first frame part and a second frame part can be moved relative to each other.
  • further heat sources can be used, for example, to bring the plate to the optimum temperature for the edge-side pressing.
  • the at least two-part design of the frame in a first frame part as a receiving part for the at least one plate and a second frame part as a counter tool is preferred regardless of the type of plate heating.
  • the contact surfaces of the frame are tempered to adjust the temperature of the plate edge below the melting temperature, but above the deformation temperature.
  • the temperatures in the oven must be correspondingly high to heat the plate interior areas above the melting temperature.
  • the temperature of the frame is maintained, for example, 10 - 30 ° C below the melting temperature of the plate, so that a rapid and precise shaping of the plate edge can be achieved.
  • cooling in the frame, e.g. Circumferential hollow conduit be present through the cold water o. The like. Is passed.
  • other cooling methods may be used to prevent the edge of the plate from heating above the melting point and starting to flow.
  • a heating of the frame edge for example, by introducing electrical heating elements in holes in the frame, for example, is advantageous if its rapid heating is desired.
  • the frame can be heated quickly so that the plate edge can be preformed faster.
  • the inner plates With the frame closed and advantageously with cooling of the frame then the inner plates can be heated.
  • It is advantageous to temper the frame by means of an electrical control. With this one or more temperature sensors are connected in the frame or in its immediate vicinity. When the temperature falls below or exceeds the specified temperature values, the frame is cooled or heated. Heating and cooling elements are advantageously both integrated in the frame.
  • the contact surfaces of the frame are selected such that the preform of the at least one plate substantially corresponds to a partial shape of a Radlaufschale.
  • the at least one plate can therefore be curved according to a portion of a Radlaufschale, narrower or wider edge regions of the Radlaufschale consist of a molded plastic edge.
  • the frame in the contact region with the plate on the adhesion reducing contact pieces offers Teflon.
  • the plate can then be easier, i. without adhesive effect, remove from the frame.
  • the at least one preformed and oven-heated plate is transferred to a tool in which both the final pressing and the injection molding are performed.
  • This process which shortens the production process, saves a tool and thus costs as well as footprint.
  • edge-side cutting of the plate after the final pressing and before the injection-molding step is dispensed with, the term "injection molding" in the context of this illustration also encompassing "overmolding".
  • the tool particularly preferably clamps the at least one plate under compression in the vicinity of or in the edge region in which the plate has previously been held in the frame was, with an outside area of the edge still protrudes beyond the clamped, pressed area.
  • the injection molding material is then injected at this edge region.
  • the invention makes it possible for the first time to bring complicated, curved in space plates with precise shaping of the edge region and their inner regions as deposits in vehicle parts, which have a - preferably encircling - molded plastic edge.
  • defined zones of the finished, almost arbitrarily shaped trim part can take on different tasks.
  • the edge of the at least one plate is preferably injection-molded only from the end face of said edge. Covering the plate with injection molding material is preferably not provided.
  • the plate When pressing the plate into its final shape and the edge-side injection molding, it is particularly advantageous if the plate is gripped to the inside next to the edge previously held in the frame to a web sealingly in the injection mold. This arrangement prevents injection molding compound from passing the web during injection molding of said edge region and from flowing to the regions of the relevant plate located further inwards.
  • a peripheral edge-side thickening adjoining the web is created, on which the trim part can be applied to a vehicle element during later installation, for example.
  • a region of the edge of the at least one plate previously held in the frame forms both a web and an adjoining outside edge region, this web likewise being sealingly encompassed on its top and bottom in the injection mold and a molding during injection molding of said edge region arises on the web outside subsequent edge thickening.
  • the said web and the said thickening may orbit around the entire plate or even occupy only a portion of the plate edge.
  • the said web can be kept at such a low temperature that it does not itself begin to melt during injection molding in such a way that the hot liquid injection-molding compound reaches the regions of the plate lying further inside.
  • the outer regions of the edge of the at least one plate preferably melt by contact with the hot injection molding material, so that after cooling a durable and permanent, permanent connection is realized.
  • the injection molding material can adhere to the glass fibers (if present) projecting into the cavity.
  • the web, on which the injection molding tool fixes the plate on the edge and to which no injection-molding material passes, is stable enough in the finished covering part to withstand high loads.
  • a plurality of plates are arranged side by side in the injection molding tool. Subsequently, both the free edges and the spaces between the plates are molded or filled with injection molding material.
  • injection molding material it is possible, in particular, to realize vehicle parts which are substantially closed over the whole area, of which large areas can be filled, on the one hand, by the said plates and, on the other hand, by injection molding material.
  • the cowling thus receives a trained along its entire circumference thickening.
  • the thickening may be provided only along one or more spaced-apart or separate regions of the trim part.
  • the invention also includes a device for producing a trim part, which is used to form at least one plastic-containing plate and for the edge-side molding of this at least one plate is formed with injection molding material.
  • a device for producing a trim part which is used to form at least one plastic-containing plate and for the edge-side molding of this at least one plate is formed with injection molding material.
  • a plurality of plates at least one of which has been preformed in the injection mold adjacent to each other can be received, wherein both the free edges and the edges in the spaces between the plates are at least partially re-injectable or.
  • the gaps between the plates can be ejected substantially completely, so that complex vehicle parts can be realized.
  • the covering part according to the invention with at least one plate containing a plastic is characterized on the one hand by the three-dimensionally curved edge obtained by preforming and by the plate interior areas subsequently pressed into the final shape, and on the other hand by the edge-side thickening resulting at least in some areas by injection molding.
  • the plate inner regions are particularly preferably not covered with injection-molding material, so that, for example, their acoustic properties are retained.
  • the trim part can thus be optimally adapted to the mechanical and acoustic requirements by the plates which are interconnected by means of the injection molding material. If high acoustic shields are required in each case in two separate regions of the trim part, for example a wheel arch liner, one of them is inserted in each of these regions. suitable form pressed plate used, which are connected with injection molding material.
  • a first portion of a trim panel formed as an underbody panel may run in the vicinity of the hot and loud exhaust system, while a second portion merely serves to insulate the sound of another vehicle area and therefore need only withstand lower temperatures.
  • a plate with a polyamide which has a high temperature resistance eg 340 ° C and higher
  • a plate for the second area the less expensive and less temperature-resistant polypropylene comes into question , In this way, for example, no expensive aluminum, which could also be used for thermal insulation in the exhaust area, used.
  • the at least one panel of the trim part comprises a LWRT (Low Weight Reinforced Thermoplastic) material.
  • LWRT Low Weight Reinforced Thermoplastic
  • This is particularly lightweight, which contributes to the weight reduction of the vehicle.
  • a core layer in particular a thermoplastic polymer matrix with reinforcing fibers contained therein, in particular glass fibers, comes into consideration.
  • the thermoplastic melts, the reinforcing fibers orient themselves under partial erection new and the core layer and thus the entire plate swells up. In this malleable state, the plate can be pressed in a pressing tool in the desired three-dimensional shape.
  • the said core layer preferably contains polypropylene or a polyamide.
  • Other suitable thermoplastics can also be used for thermoforming.
  • At least one cover layer is preferably arranged on both sides of the core layer, for example a film on one side, preferably of polypropylene, and on the other side a cover layer as cover fleece, for example made of PET (polyethylene terephthalate) with textile fibers contained therein.
  • Figure 1 shows a plate section in a perspective view
  • Figure 2 shows the plate according to the figure 1 in side view
  • Figure 3 is a plan view of a lower frame part with an inserted plate
  • Figure 4 is a sectional side view of an open frame with inserted plate
  • FIG. 5 is a detail view of the frame according to Figure 4.
  • FIG. 6 shows the frame according to FIG. 4 in an oven
  • Figure 7 shows the frame according to Figures 4 and 5 in the closed state in the oven
  • Figure 8 is a perspective view of a lower frame part
  • Figure 9 is a perspective view of a marginal preformed
  • Figure 10 is a sectional partial side view of a press and injection mold with inserted plate
  • Figure 11 is a perspective view of the plate according to the figure 9 with pressed in final shape plate inner regions
  • Figure 12 is a plan view of a trim panel with a curved edge and two substantially flat plates.
  • FIGS. 1 and 2 schematically show a plate 2 formed as a multilayer plate from the side.
  • This has, for example, a total thickness of 2.5-5 mm, seen in plan view is substantially rectangular in shape and consists in the present case of a core layer 3 with an upper cover layer 4 and a lower cover layer 5 (see enlarged view in Fig. 2).
  • the core layer 3 has a thermoplastic matrix, for example containing polypropylene, as well as embedded therein reinforcing fibers, preferably glass fibers. The melting point of the glass fibers is higher than the melting point of the plastic matrix.
  • Such a core layer is accordingly formed from a LWRT material.
  • the upper cover layer 4 is, for example, a cover fleece of PET (polyethylene terephthalate) with textile fibers contained therein, while the lower cover layer 5 is formed as a film, preferably of polypropylene.
  • the plates 2 are shown for the sake of simplicity without showing the said multi-layer structure. Such a multi-layer structure is not necessarily present and not a prerequisite for the trim parts of the invention.
  • Fig. 3 is a plan view of a lower or first frame part 1 1 of a metallic frame 10 is shown with an indicated, inserted from above plate 2 with edge contour 6a.
  • the plate 2 has in this example an oblique edge with otherwise rectangular blank.
  • the shape of the plate 2 is in principle arbitrary.
  • the first frame part 1 1 has a central recess 12, which - proportionally smaller - substantially corresponds to the edge contour 6a of the plate 2.
  • On the upper side of the first frame part 11, essentially center-shaped centering rods 13 are arranged distributed around the recess 12.
  • first frame part 1 1 an exemplary embodiment of a first frame part 1 1 is shown in perspective, in which the centering rods 13 have been omitted for simplicity.
  • the first frame part 1 1 has an upper-side contour, which is formed as a three-dimensional curved contact surface 14 for receiving the lower-side edge 6 of the plate 2.
  • the curvature of the contact surface 14 can also accept narrow radii in the range of a few centimeters.
  • FIG. 5, 7 and 8 are sectional side views of a first frame part 11 (section line along AA in Fig. 3, other shaping of the contact surface 14 than the embodiment according to Fig. 4) and an upper or second frame part 16 is shown whose downwardly facing contact surfaces 19 correspond to the contact surfaces 14.
  • the second frame part 16 also has a central square recess 17, which is aligned with the recess 12 of the first frame part 1 1.
  • centering openings 18 are provided, which are aligned with the centering rods 13, which drive into the centering openings 18 when the frame (FIGS. 7, 8) is closed.
  • a plate 2 is inserted into the first frame part 1 1 between the centering rods 13 with little play.
  • the edge 6 of the plate 2 rests on the contact surface 14 at several points.
  • FIG. 6 shows a very schematic detail view of the first frame part 11.
  • a temperature sensor 21 is used in a small bore, which is connected via a cable 22 to an electrical controller 23. that is. This evaluates the temperature signals and outputs control commands for temperature control of the contact surface 14.
  • the electric heater comprises induction heating elements 25, which extend, for example, along the first frame part 11 and are switched on and off by control command via the line 24.
  • Other geometries or other types of heating elements are readily possible.
  • cooling channels 29 are provided, which are fed by a cooling reservoir 27 via a pump, not shown.
  • the pump which is controlled by the controller 23 via the line 26, pumps coolant in a circuit (not explicitly shown) through the cooling channels 29.
  • a coolant those skilled in the art generally known.
  • Fig. 7 shows the open frame 10, ie with apart driven first and second frame part 1 1, 16, in an indicated illustrated furnace 30 with two support members 31 to which infrared radiator 32 are attached.
  • the radiators 32 heat the at least one plate 2 through the recesses 12 and 17 to a temperature at which, in particular, the thermoplastic matrix of the core layer 3 begins to melt and the reinforcing fibers contained therein rise, so that the plate 2 swells in the plate inner regions 15 , for example, up to 18 mm, but not the peripherally clamped edge 6. This situation is shown in Figures 6 (little swollen) and 7 (more swollen).
  • the aim is to heat the plate inner regions 15 above the melting temperature, but the plate edge 6 below this temperature, so that it is deformable, but does not begin to flow. In the present case, this is achieved on the one hand in that the plate edge 6 is not directly irradiated (see Fig. 7).
  • the controller 23 can be adjusted by the controller 23, a suitable temperature of the bearing surfaces 14, 19.
  • the core layer contains polypropylene, which has a melting temperature in the range of 160 ° C to 165 ° C. Applied to the embodiment shown, this means that the plate is heated in the unrestrained region to, for example, 200 ° C, while its temperature in the region of the edge 6, for example, does not exceed 150 ° C.
  • the second frame part 16 is moved according to the embodiment described here in the oven 30 down in the direction of the first frame part 1 1 until the frame 10 is closed.
  • the plate edge 6 is pressed according to the contour of the bearing surfaces 14, 19 of the frame 10 in a form that no longer or only slightly - compared to the shaping in the frame 10 - in the subsequent process steps.
  • a plurality of plates 2 can be pressed and heated side by side in one or more frames 10.
  • the at least one plate 2 is removed from the oven 30 and from the frame 10.
  • the bearing surfaces 14, 19 may be provided with a Teflon coating or Teflon coating.
  • the at least one plate 2 is then, advantageously transported by means of a robot arm, not shown, in a tool 40, in which on the one hand at least portions of the edge 6 is injection molded with injection molding material and on the other hand, the heated and in the present case swollen plate inner regions 15 are pressed into their final shape. This pressing is made possible by the heating and the melting or melting of the plate inner regions 15.
  • FIG. 10 shows in cross-section the tool 40 according to the invention, which is designed both as a press and as an injection molding tool.
  • This tool can be designed to receive the plate 2 horizontally or vertically.
  • it has a lower tool part 41 designed as a pressing element and an upper counter-tool part 42 (also shown hatched), which also presses the plate 2 and in particular the plate inner regions 15 into their desired final shape when the press is closed.
  • pressing surfaces 45 and 46 are provided for this, by means of which the plate inner regions 15 can be of different thicknesses and three dimensions, depending on the geometric, structural (in particular stiffness) and acoustic requirements of the installation location of the trim part in the vehicle.
  • the thickness of the pressed plate inner regions is for example in the range of 1, 2 - 15 mm.
  • the thin areas are used in particular for stiffening, the thicker fulfill mainly acoustic functions.
  • the two pressing elements 41 and 42 are designed such that they constrict the plate 2 between the edge 6 and the area 8 to a web 7 with low height sealing.
  • the pressing force of the tool parts 41, 42 in this area is selected to be correspondingly high.
  • this is constricted in the region of the web 7, for example, to 1 - 1, 5 mm.
  • the pressing elements 41, 42 are formed such that the outside adjoins the web 7, in the frame 10 pre-pressed and therefore three-dimensionally curved edge 6 in a cavity 48 (cavity) is received, which in the present case has the same height as the edge 6.
  • the preformed edge 6 is in this case of two Plattenrandability vom 43, 44th the tool parts 41, 42 held.
  • the cavity 48 runs according to a variant along the edge 6 around the plate 2 around. In the cavity 48 lead from the outside and over the circumference distributed several lines 49, is injected through the injection molding compound (see small arrow) into the cavity 48. It can be used here on familiar, familiar to those skilled materials.
  • the hot injection molding material melts the edge 6 at its accessible outside or outside areas and connects to this inextricably.
  • a trim panel 1 which comprises the at least one plate 2 including the preferably circumferential web 7 and a thickening 9 or bead at the edge 6 thereof.
  • FIG. 11 shows the plate 2 according to FIG. 9 after removal from the tool 40 with compressed inner plate areas 1 5 - the finer geometries obtained by the final pressing are indicated by dashes in the areas 15 - and molded edge 6, which adjoins the Injection molding material has been connected to a circumferential thickening 9.
  • the thickening 9 or bead is usually produced with not shown here rounded edges.
  • the height or thickness of the thickening 9 is for example in the range of 2 - 3 mm.
  • the geometrical relationships and the shape of the pressed and overmolded plate 2 are shown schematically and by way of example only in order to clarify the principle.
  • FIG. 12 shows a top view of a trim panel 1 according to the invention with three panels 2 in plan view.
  • the left plate 2 in this case has a three-dimensionally curved edge 6 obtained by preforming (indicated by the two curved lines).
  • a peripheral thickening 9 is present all around, which has been realized by injection molding in each case an outer part of the edges 6 of the respectively several plates 2 previously held in correspondingly formed frames 10.
  • the web around each plate 2 7, with which the jewei- Slice plate 2 was clamped in the tool 40 The intermediate spaces between two plates 2 and / or their webs 7 are likewise in the same way by injection molding of the edges 6 extending beyond the webs 7 (cf., Fig. 2-4) and - if the edges 6 are at a distance from one another - ejection of the intermediate space realized between the edges 6.
  • the plurality of plates 2 according to FIG. 12 may each consist of different materials.
  • the plate 2 on the left in FIG. 12 may include polyamide as a thermoplastic in the core layer, while in the two right plates 2 polypropylene is used which has a lower melting point than polyamide.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Abstract

L'invention concerne un procédé de fabrication d'un élément de revêtement (1) pour un véhicule. Le procédé consiste en ce que : a) le bord (6) d'au moins une plaque (2) prédécoupée contenant un plastique et conservant cette découpe au cours du procédé est pressé par chauffage, dans un cadre (10) dont les surfaces d'appui (14, 19) pour le bord de plaque (6) à entourer côté supérieur et inférieur sont incurvées de façon tridimensionnelle, de manière à prendre la forme d'une préforme incurvée de façon tridimensionnelle correspondante; b) des zones intérieures de plaque (15) non maintenues côté bord sont chauffées et gonflent éventuellement; c) la ou les plaques (2) préformées sont pressées, à l'état encore chaud, dans un outil de moulage par compression (40) pour obtenir des pièces finies; et d) au moins une zone dudit bord (6) de la ou des plaques (2) pressées sous la forme de pièces finies est moulée par injection à l'aide d'un matériau de moulage par injection. L'invention concerne également un dispositif correspondant de fabrication d'un élément de revêtement ainsi qu'un tel élément de revêtement.
PCT/EP2011/051543 2010-02-03 2011-02-03 Procédé de fabrication d'un élément de revêtement d'un véhicule, dispositif correspondant ainsi qu'élément de revêtement Ceased WO2011095536A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201010001559 DE102010001559A1 (de) 2010-02-03 2010-02-03 Herstellungsverfahren für ein Verkleidungsteil eines Fahrzeugs, entsprechende Vorrichtung sowie Verkleidungsteil
DE102010001559.8 2010-02-03

Publications (1)

Publication Number Publication Date
WO2011095536A1 true WO2011095536A1 (fr) 2011-08-11

Family

ID=43798309

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2011/051543 Ceased WO2011095536A1 (fr) 2010-02-03 2011-02-03 Procédé de fabrication d'un élément de revêtement d'un véhicule, dispositif correspondant ainsi qu'élément de revêtement

Country Status (2)

Country Link
DE (1) DE102010001559A1 (fr)
WO (1) WO2011095536A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012220180A1 (de) * 2012-11-06 2014-05-08 Röchling Automotive AG & Co. KG Flächiges Verbundbauteil sowie Verfahren und Vorrichtung zur Herstellung desselben
GB2552709A (en) * 2016-08-04 2018-02-07 Solapix Llc Carriage and method for shaping a panel

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3012359B1 (fr) * 2013-10-30 2016-09-30 Plastic Omnium Cie Procede pour realiser une piece en matiere thermoplastique comportant une feuille de renfort en surface
JP6929794B2 (ja) * 2015-06-29 2021-09-01 コベストロ、ドイチュラント、アクチエンゲゼルシャフトＣｏｖｅｓｔｒｏ Ｄｅｕｔｓｃｈｌａｎｄ Ａｇ ３ｄ物体を製造する方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004010810A1 (de) * 2004-03-05 2005-09-22 Bayer Materialscience Ag Verbundbauteil
EP1902830A1 (fr) * 2006-09-19 2008-03-26 Quadrant Plastic Composites AG Méthode de fabrication d'un composite thermoplastique déformable comprenant une couche hydrophobe
WO2010012808A1 (fr) * 2008-07-30 2010-02-04 Takeo Gmbh Procédé de fabrication d'un élément de garniture de véhicule et élément de garniture

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004010810A1 (de) * 2004-03-05 2005-09-22 Bayer Materialscience Ag Verbundbauteil
EP1902830A1 (fr) * 2006-09-19 2008-03-26 Quadrant Plastic Composites AG Méthode de fabrication d'un composite thermoplastique déformable comprenant une couche hydrophobe
WO2010012808A1 (fr) * 2008-07-30 2010-02-04 Takeo Gmbh Procédé de fabrication d'un élément de garniture de véhicule et élément de garniture

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
KAUFMANN G: "WERKZEUG ZUM UMSPRITZEN SCHALLDAEMMENDER TEXTILIEN", KUNSTSTOFFE, CARL HANSER VERLAG, MUNCHEN, DE, vol. 89, no. 9, 1 September 1999 (1999-09-01), pages 118 - 120, XP000958436, ISSN: 0023-5563 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012220180A1 (de) * 2012-11-06 2014-05-08 Röchling Automotive AG & Co. KG Flächiges Verbundbauteil sowie Verfahren und Vorrichtung zur Herstellung desselben
US20140127961A1 (en) * 2012-11-06 2014-05-08 Roechling Automotive SE & Co. KG Two-dimensional composite component and method and device for the production thereof
US10124516B2 (en) 2012-11-06 2018-11-13 Röchling Automotive SE & Co. KG Two-dimensional composite component and method and device for the production thereof
GB2552709A (en) * 2016-08-04 2018-02-07 Solapix Llc Carriage and method for shaping a panel

Also Published As

Publication number Publication date
DE102010001559A1 (de) 2011-08-04

Similar Documents

Publication Publication Date Title
DE102009040901B4 (de) Verfahren zum Herstellen von Tragstrukturen in Kraftfahrzeugen
EP2726308B1 (fr) Module extérieur muni d'un revêtement extérieur pour un élément boîtier de conception modulaire, élément de boîtier de conception modulaire et procédé de fabrication dudit module extérieur
EP3019320B1 (fr) Procédé de fabrication d'une pièce structurale pour véhicules à moteur en composite à matrice thermoplastique et à fibres longues
DE102016222550B4 (de) Bodenanordnung für ein temperierbares Batteriegehäuse
DE10112635A1 (de) Verfahren und Vorrichtung zum Zusammenformen eines thermoplastischen Materials mit einem thermoplastischen Sandwich-Material und dadurch hergestellte Artikel
WO2011085792A1 (fr) Procédé de fabrication de pièces moulées en thermoplastique renforcé par des fibres continues et pièces moulées de véhicules à moteur
WO1999044851A1 (fr) Reservoir de carburant a ecran thermique integre
DE102015114604B4 (de) Verfahren zur Herstellung eines Bauteils aus Kunststoff
WO1998017461A1 (fr) Procede et dispositif d'encadrement d'un element decoratif
DE102010053381A1 (de) Organoblech zur Herstellung von faserverstärkten Kunststoff-Formteilen
WO2011095536A1 (fr) Procédé de fabrication d'un élément de revêtement d'un véhicule, dispositif correspondant ainsi qu'élément de revêtement
EP0657265A1 (fr) Procédé de fabrication d'éléments plats revêtus utilisant des préformes en forme de grille
DE10222120A1 (de) Kraftfahrzeug mit einem Bauelement aus Kunststoff und Verfahren zu seiner Herstellung
DE102015108840A1 (de) Verfahren zum Bördeln eines Multilagenmaterials, Verfahren zur Herstellung einer Tasche für eine Pouch-Zelle unter Verwendung des Verfahrens zum Bördeln eines Multilagenmaterials. Verfahren zur Herstellung einer Temperiereinheit unter Verwendung des Verfahrens zum Bördeln eines Multilagenmaterials, Pouch-Zelle mit einer Batterietasche aus einem Multilagenmaterial sowie Temperiereinheit aus einem formstabilen Multilagenmaterial
DE102015208037B4 (de) Formungsvorrichtung, Formungsverfahren und geformte Produkte
EP3188885B1 (fr) Procédé de fabrication d'une pièce multi-couche de matière composite avec une structure renforcée intégrée
DE102008037131B4 (de) Vorrichtung zum Herstellen eines formstabilen, sichtbaren Verkleidungsteils für ein Kraftfahrzeug sowie form- und narbgebende Schale zum lösbaren Verbinden mit einer Werkzeughälfte einer Spritzgießmaschine
DE102019124642A1 (de) Verkleidungsbauteil für ein Kraftfahrzeug und Verfahren zur Herstellung eines Verkleidungsbauteils sowie Sandwichwerkstoff für ein Verkleidungsbauteil
EP1626852B1 (fr) Element composite et procede de production correspondant
EP3613550B1 (fr) Procédé et dispositif de fabrication d'une pièce moulée stratifiée
EP2323827A1 (fr) Procédé de fabrication d'un élément de garniture de véhicule et élément de garniture
DD296636A5 (de) Verfahren zum herstellen von kaschierten formteilen
DE10338109B4 (de) Verfahren zur Herstellung eines Verbundbauteils
WO2015035970A1 (fr) Procédé de fabrication d'un produit au moyen d'une unité de thermoformage ou d'assemblage, et unité de thermoformage ou d'assemblage
DE102013015266B4 (de) Modulare Mittelkonsole für ein Fahrzeug

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 11703191

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 11703191

Country of ref document: EP

Kind code of ref document: A1