EP1361943A1 - Method for producing composite parts by multicomponent injection molding - Google Patents

Method for producing composite parts by multicomponent injection molding

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Publication number
EP1361943A1
EP1361943A1 EP02708322A EP02708322A EP1361943A1 EP 1361943 A1 EP1361943 A1 EP 1361943A1 EP 02708322 A EP02708322 A EP 02708322A EP 02708322 A EP02708322 A EP 02708322A EP 1361943 A1 EP1361943 A1 EP 1361943A1
Authority
EP
European Patent Office
Prior art keywords
basic body
injection molding
plastic
base body
cavities
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP02708322A
Other languages
German (de)
French (fr)
Inventor
Hubert Goldbach
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.)
Lanxess Deutschland GmbH
Original Assignee
Bayer AG
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 Bayer AG filed Critical Bayer AG
Publication of EP1361943A1 publication Critical patent/EP1361943A1/en
Withdrawn legal-status Critical Current

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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
    • B29C45/16—Making multilayered or multicoloured articles
    • B29C45/1671—Making multilayered or multicoloured articles with an 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
    • B29C45/14467—Joining articles or parts of a single article
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D29/00—Superstructures, understructures, or sub-units thereof, characterised by the material thereof
    • B62D29/04—Superstructures, understructures, or sub-units thereof, characterised by the material thereof predominantly of synthetic material
    • B62D29/041—Understructures
    • 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 ner process for the production of Nerbundmaschine consisting of at least one base body and at least one first thermoplastic
  • Plastic part and a second thermoplastic plastic part which are connected to the base body by injection molding, the plastic parts being made of different plastic material, by inserting the base body into a multi-component injection molding tool with at least two separate melt-conducting systems and at least two cavities and for the first plastic part and the second plastic part and subsequent simultaneous injection of the different plastics into the cavities.
  • a generic ner driving has become known from the document DE 3 503 036 A1, in which a first cavity is first filled with a first thermoplastic material in a first step by means of movable cores and then a further cavity in a second step by withdrawing a movable tool element is released.
  • a second plastic component is injected into the remaining cavity and partially connected to the first plastic component.
  • a disadvantage of the methods is that these ner drives have a high cycle time.
  • the cooling of the first plastic component has to be waited for, otherwise the structure of the first plastic part would be destroyed.
  • complex tools with special slides have to be used to implement these processes.
  • the object of the invention is to provide a method which avoids the disadvantages of the known methods described above and nevertheless enables a targeted positive connection between the different plastic parts made of different plastics.
  • the object is achieved in that, in a method of the type mentioned at the outset, a base body is inserted into an injection mold, which connects the various plastic parts and separates the cavities for the plastic parts from one another by corresponding sealing edges in the mold. This enables a sumultaneous injection of the different plastics into the cavities.
  • the invention relates to a method for producing composite parts consisting of at least one base body, preferably made of metal or a high-strength plastic material, particularly preferably made of metal, and at least a first thermoplastic plastic part and a second thermoplastic plastic part, which are connected to the base body by injection molding are, wherein the two plastic parts consist of different plastic material by inserting the base body in a multi-component injection molding tool with at least two separate melt control systems and at least two cavities for the first
  • thermoplastic used is preferably a plastic which is selected from the series: polyamide, polyester, polyolefin, in particular styrene copolymer, polycarbonate, polypropylene, polyphenylene sulfide, polyimide, polyvinyl chloride, polyurethane, PSO or PEEK or possible mixtures of the polymers mentioned.
  • the preferred object of the invention is to produce a form-fitting connection of one or more plastic parts with the base body, in particular with an edge of the base body, which enables these plastic parts to be displaced on the base body in at least one direction, preferably in the longitudinal direction of the plastic part.
  • the plastic part can shrink without hindrance on the base body without hindrance after the plastic composite component has been removed from the mold. Distortion and internal tension can be largely avoided in the composite component.
  • a multi-part base body is used, the individual parts of the base body being connected to one another via a thermoplastic plastic part by injection molding.
  • the composite parts produced by the method according to the invention can be used as components for the automotive sector, e.g. can be used as a seat structure, door modules, front end parts, sills with a combination of elastic and hard plastic, entry strips, coolers or as housings for household appliances, small electrical appliances and office machines.
  • Fig. 1 shows the support structure for the front module of a motor vehicle manufactured by the inventive method.
  • Fig. 2 shows a section through the support structure according to Fig. 1 along the line
  • FIG. 3 shows a step through the carrying structure according to FIG. 1 according to line B-B in FIG. 1.
  • Fig. 4 the same step as Fig. 3, but in this variant
  • Edge molding (16) has a Z shape.
  • Fig. 5 shows the cross section through a mold during the execution of the method according to the invention.
  • FIG. 6 detail from FIG. 5 in the area of the nozzle 33 with the representation of the sealing surfaces 11, 12.
  • Fig. 1 shows the support structure for the front module of a motor vehicle consisting of the base body 1 made of sheet steel, two headlight supports 2; 3 made of an unreinforced amorphous thermoplastic material (polycarbonate-ABS mixture), a cooling module carrier 4 made of a glass fiber reinforced thermoplastic (polyamide), a rib structure 5 made of a glass fiber reinforced thermoplastic (polyamide) and a panel 6 made of a glass fiber reinforced thermoplastic (polyamide) ,
  • Fig. 2 shows a step through the Grundkö ⁇ er 1, the panel 6, the rib structure 5 and the headlight bracket 3.
  • the rib structure 5 and the panel 6 form a unit and are connected to the base body 1.
  • the headlamp support 3 is separated from the rib structure 5 via the sealing surfaces 7, 8 on the base body 1, but is connected to the base body 1 in a form-fitting and fixed manner via the extrusion coating 9 and the injection 10.
  • the base body 1 is shown openwork to show the shape of the rib structure.
  • FIG 3 shows a step through the vertical strut of the base body 1 and horizontally through the headlight support 3 and the cooling module support 4.
  • the rib structure 5 is firmly connected to the base body 1. Through the sealing surfaces 11; 14 above and the sealing surfaces 12; 15 below the base body 1, the rib structure is separated from the headlight bracket 3 and the cooling module bracket 4.
  • the headlight bracket 3 is positively and firmly connected to the base body via the ribs 17, the web 19, the injection point 18 and the edge molding 13 with injection points.
  • the cooling module carrier 4 is positively connected to the basic body 1 via the extrusion coating 16.
  • Fig. 4 shows a variant of the component according to Fig. 1 with the same section as in Fig. 3, but with the edge molding 16 having a Z-shape, so that the cooling module carrier is firmly connected to the basic body 1, but a movement of the cooling module carrier is permitted in the longitudinal direction of the edge 16.
  • the basic body 1 By closing the injection mold (FIG. 5), the basic body 1 is largely positively received by the contour surface 24 of the injection side and by contour surfaces 25 of the closing side, except for the cavities 22, 23 for the plastics A and B.
  • This allows sealing surfaces 7,8 (see FIG. 1); 11, 12 ( Figures 3 and 6); 14, 15 (FIGS. 3 and 4), etc., so that the individual plastics A and B can flow precisely into the provided cavities 22, 23 during the injection process.
  • the adjacent injection molding units I and II simultaneously inject the respective plastic quantities for the plastic components A and B.
  • the plastic melt A flows through the injection pressure of the injection molding unit I into the hot runner manifold 28 to the hot runner nozzle 29 and into the cold manifold 30 to the mold cavity (cavity) 23.
  • the hot runner nozzle could also connect directly to the mold cavity 23.
  • the plastic melt B simultaneously flows through the hot runner distributor 31 to the nozzles 32, 33 and from there directly into the cavities 22 or via cold distributors into these cavities.
  • the plastic melt is usually filled with a
  • the plastic is further cooled by the temperature control system of the injection mold.
  • the mold can be opened and the multi-component injection molded part can be removed from the mold.
  • a handling device feeds the bowl-shaped basic body, places it on the spray side of the cavity.
  • the handling device turns the grippers to the closing side and removes the finished multi-component injection molded part and usually places it on a conveyor belt, whereby e.g. during removal and storage, Sprues can be removed.
  • multi-component injection molded parts can be produced in a normal injection molding cycle of 35 seconds to 120 seconds, depending on the size and weight of the article.
  • the basic body 1 is provided anyway in the case of lightweight structures. In other cases, a frame part as basic body 1 would have to be injected separately or in a multi-component injection mold in one operation. This would mean an additional operation for the handling device (removal of the finished part and Removing the frame part, swiveling and inserting the frame part, then moving out and putting down the finished part).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

The invention relates to a method for producing composite parts that consist of at least one base body (1) and at least one first thermoplastic element (4; 5; 6) and one second thermoplastic element (2; 3) which are interlinked with the base body (1) by injection molding. The parts (2; 3) and (4; 5; 6) consist of different plastic materials. The composite parts are produced by inserting the base body (1) into a multicomponent injection molding tool that comprises at least two separate melt line systems and at least two cavities for the first part (2; 3) and the second part (4; 5; 6). The different plastic materials are simultaneously injected into the cavities, said cavities being kept separate from each other during injection molding by the contour of the base body (1) and by special sealing edges of the injection molding tool that contact the contour of the base body (1).

Description

Verfahren zur Herstellung von Verbundteilen durch Mehrkomponentenspritz- gussProcess for the production of composite parts by multi-component injection molding
Die Erfindung betrifft ein Nerfahren zur Herstellung von Nerbundteilen bestehend aus wenigstens einem Grundkörper und wemgstens einem ersten thermoplastischenThe invention relates to a ner process for the production of Nerbundteile consisting of at least one base body and at least one first thermoplastic
Kunststoffteil und einem zweiten thermoplastischen Kunststoffteil, die mit dem Grundkörper durch Spritzguss verbunden sind, wobei die Kunststoffteile aus unterschiedlichen Kunststoffmaterial bestehen, durch Einlegen des Grundkörpers in ein Mehrkomponenten-Spritzgießwerkzeug mit mindestens zwei getrennten Schmelz- eleitsy stemen und mindestens zwei Kavitaten und für das erste Kunststoffteil und das zweite Kunststoffteil und anschließendes simultanes Einspritzen der verschiedenen Kunststoffe in die Kavitaten.Plastic part and a second thermoplastic plastic part, which are connected to the base body by injection molding, the plastic parts being made of different plastic material, by inserting the base body into a multi-component injection molding tool with at least two separate melt-conducting systems and at least two cavities and for the first plastic part and the second plastic part and subsequent simultaneous injection of the different plastics into the cavities.
Bekannt ist die Fertigung von Spritzgussteilen in Mehrkomponententechnik, bei der die einzelnen Kunststoffkomponenten nacheinander in mehreren getrennten Formen an einen Grundkörper angespritzt werden.The production of injection molded parts using multi-component technology is known, in which the individual plastic components are molded onto a base body in succession in several separate forms.
Weiter ist aus der Schrift DE 3 503 036 AI ein gattungsgemäßes Nerfahren bekannt geworden, bei dem zunächst mittels beweglicher Kerne in einem ersten Schritt ein erster Hohlraum mit einem ersten thermoplastischen Material gefüllt wird und dann in einem zweiten Schritt durch Zurückziehen eines beweglichen Werkzeugelementes ein weiterer Hohlraum freigegeben wird. Im Folgenden wird eine zweite Kunststoffkomponente in den verbliebenen Hohlraum gespritzt und teilweise mit der ersten Kunststoffkomponente verbunden.Furthermore, a generic ner driving has become known from the document DE 3 503 036 A1, in which a first cavity is first filled with a first thermoplastic material in a first step by means of movable cores and then a further cavity in a second step by withdrawing a movable tool element is released. In the following, a second plastic component is injected into the remaining cavity and partially connected to the first plastic component.
Ein Nachteil der Verfahren ist, dass diese Nerfahren eine hohe Zykluszeit aufweisen. Die Abkühlung der ersten Kunststoffkomponente muss abgewartet werden, da sonst die Struktur des ersten Kunststoffteiles zerstört würde. Hinzu kommt, dass aufwendige Werkzeuge mit speziellen Schiebern eingesetzt werden müssen, um diese Ver- fahren zu realisieren. Aufgabe der Erfindung ist es ein Verfahren bereitzustellen, das die oben beschriebenen Nachteile der bekannten Verfahren vermeidet und dennoch eine gezielte formschlüssige Verbindung zwischen den verschiedenen Kunststoffteilen aus unterschiedlichen Kunststoff ermöglicht.A disadvantage of the methods is that these ner drives have a high cycle time. The cooling of the first plastic component has to be waited for, otherwise the structure of the first plastic part would be destroyed. In addition, complex tools with special slides have to be used to implement these processes. The object of the invention is to provide a method which avoids the disadvantages of the known methods described above and nevertheless enables a targeted positive connection between the different plastic parts made of different plastics.
Die Aufgabe wird erfindungsgemäß dadurch gelöst, dass in einem Verfahren der eingangs genannten Art ein Grundkörper in ein Spritzgießwerkzeug eingelegt wird, der die verschiedenen Kunststoffteile verbindet und die Kavitaten für die Kunststoffteile durch entsprechende Dichtkanten im Werkzeug voneinander trennt. Da- durch ist ein sumultanes Einspritzen der verschiedenen Kunststoffe in die Kavitaten möglich.According to the invention, the object is achieved in that, in a method of the type mentioned at the outset, a base body is inserted into an injection mold, which connects the various plastic parts and separates the cavities for the plastic parts from one another by corresponding sealing edges in the mold. This enables a sumultaneous injection of the different plastics into the cavities.
Gegenstand der Erfindung ist ein Verfahren zur Herstellung von Verbundteilen bestehend aus wenigstens einem Grundkörper, bevorzugt aus Metall oder einem hoch- festen Kunststoffmaterial, insbesondere bevorzugt aus Metall, und wenigstens einem ersten thermoplastischen Kunststoffteil und einem zweiten thermoplastischen Kunststoffteil, die mit dem Grundkörper durch Spritzguss verbunden sind, wobei die beiden Kunststoffteile aus unterschiedlichen Kunststoffmaterial bestehen durch Einlegen des Grundkörpers in ein Mehrkomponenten-Spitzgießwerkzeug mit mindestens zwei getrennten Schmelzeleitsystemen und mindestens zwei Kavitaten für das ersteThe invention relates to a method for producing composite parts consisting of at least one base body, preferably made of metal or a high-strength plastic material, particularly preferably made of metal, and at least a first thermoplastic plastic part and a second thermoplastic plastic part, which are connected to the base body by injection molding are, wherein the two plastic parts consist of different plastic material by inserting the base body in a multi-component injection molding tool with at least two separate melt control systems and at least two cavities for the first
Teil und das zweite Teil und anschließendes sumultanes Einspritzen der verschiedenen Kunststoffe in die Kavitaten, wobei die Kavitaten durch die Kontur des Grundkörpers und spezielle Dichtungskanten des Spritzgusswerkzeuges, die die Kontur des Grundkörpers berühren, während des Spritzgießens voneinander getrennt werden.Part and the second part and subsequent sumultaneous injection of the various plastics into the cavities, the cavities being separated from one another by the contour of the base body and special sealing edges of the injection molding tool, which touch the contour of the base body, during the injection molding.
Bevorzugt wird als Metall für den Grundkörper Stahl, Aluminium oder Magnesium oder eine Legierung dieser Metalle mit anderen Metallen verwendet.Steel, aluminum or magnesium or an alloy of these metals with other metals is preferably used as the metal for the base body.
Als thermoplastischer Kunststoff wird bevorzugt ein Kunststoff verwendet, der aus- gewählt ist aus der Reihe: Polyamid, Polyester, Polyolefm, insbesondere Styrol-Co- polymerisat, Polycarbonat, Polypropylen, Polyphenylensulfid, Polyimid, Polyvinyl- chlorid, Polyurethan, PSO oder PEEK oder möglichen Mischungen der genannten Polymere.The thermoplastic used is preferably a plastic which is selected from the series: polyamide, polyester, polyolefin, in particular styrene copolymer, polycarbonate, polypropylene, polyphenylene sulfide, polyimide, polyvinyl chloride, polyurethane, PSO or PEEK or possible mixtures of the polymers mentioned.
Bevorzugter Gegenstand der Erfindung ist die Erzeugung einer formschlüssigen Ver- bindung eines oder mehrerer Kunststoffteile mit dem Grundkörper, insbesondere mit einer Kante des Grundkörpers, die eine Verschiebung dieser Kunststoffteile auf dem Grundkörper in mindestens einer Richtung vorzugsweise in Längsrichtung des Kunststoffteils ermöglicht. Dadurch kann das Kunststoffteil ohne Behinderung nach dem Entformen des Kunststoff- Verbundbauteiles auf dem Grundkörper ohne Behin- derung schwinden. Verzug und innere Spannung können im Verbundbauteil weitgehend vermieden werden.The preferred object of the invention is to produce a form-fitting connection of one or more plastic parts with the base body, in particular with an edge of the base body, which enables these plastic parts to be displaced on the base body in at least one direction, preferably in the longitudinal direction of the plastic part. As a result, the plastic part can shrink without hindrance on the base body without hindrance after the plastic composite component has been removed from the mold. Distortion and internal tension can be largely avoided in the composite component.
In einer bevorzugten Ausführung wird ein mehrteiliger Grundkörper verwendet, wobei durch das Spritzgießen die einzelnen Teile des Grundkörpers über ein thermo- plastisches Kunststoffteil miteinander verbunden werden.In a preferred embodiment, a multi-part base body is used, the individual parts of the base body being connected to one another via a thermoplastic plastic part by injection molding.
Die nach den erfindungsgemäßen Verfahren hergestellten Verbundteile können als Bauteile für den Kfz-Bereich, z.B. als Sitzstruktur, Türmodule, Frontendteile, Schweller mit einer Kombination aus elastischen und harten Kunststoff, Einstieg- leisten, Kühler eingesetzt werden oder als Gehäuse von Haushaltsgeräten, Elektro- kleingeräten und Büromaschinen dienen.The composite parts produced by the method according to the invention can be used as components for the automotive sector, e.g. can be used as a seat structure, door modules, front end parts, sills with a combination of elastic and hard plastic, entry strips, coolers or as housings for household appliances, small electrical appliances and office machines.
Die Erfindung wird nachfolgend anhand der Figuren durch die Beispiele, welche jedoch keine Beschränkung der Erfindung darstellen, näher erläutert.The invention is explained in more detail below with reference to the figures by the examples, which, however, do not represent any restriction of the invention.
Es zeigen:Show it:
Fig. 1 die Tragestruktur für das Frontmodul eines Kraftfahrzeuges hergestellt nach dem erfindungsgemäßen Verfahren. Fig. 2 einen Schnitt durch die Trageslxuktur nach Fig. 1 entsprechend LinieFig. 1 shows the support structure for the front module of a motor vehicle manufactured by the inventive method. Fig. 2 shows a section through the support structure according to Fig. 1 along the line
A-A.A-A.
Fig. 3 einen Schritt durch die Tragestruktur nach Fig. 1 entsprechend Linie B-B inFig. 1.3 shows a step through the carrying structure according to FIG. 1 according to line B-B in FIG. 1.
Fig. 4 den gleichen Schritt wie Fig. 3, wobei jedoch in dieser Variante dieFig. 4 the same step as Fig. 3, but in this variant
Kantenumspritzung (16) eine Z-Form aufweist.Edge molding (16) has a Z shape.
Fig. 5 den Querschnitt durch ein Formwerkzeug während der Ausführung des erfindungsgemäßen Verfahrens.Fig. 5 shows the cross section through a mold during the execution of the method according to the invention.
Fig. 6 Detail aus Fig. 5 im Bereich der Düse 33 mit Darstellung der Dichtflächen 11,12. FIG. 6 detail from FIG. 5 in the area of the nozzle 33 with the representation of the sealing surfaces 11, 12.
BeispieleExamples
Beispiel 1example 1
Fig. 1 zeigt die Tragestruktur für das Frontmodul eines Kraftfahrzeuges bestehend aus dem Grundkörper 1 aus Stahlblech, zwei Scheinwerferträgern 2; 3 aus einem unverstärktem amorphen thermoplastischen Kunststoffmaterial (Polycarbonat-ABS- Mischung), einem Kühlmodulträger 4 aus einem glasfaserverstärkten thermoplastischen Kunststoff (Polyamid), einer Rippenstruktur 5 aus einem glasfaserverstärkten thermoplastischen Kunststoff (Polyamid) und einer Blende 6 aus einem glasfaserverstärkten thermoplastischen Kunststoff (Polyamid).Fig. 1 shows the support structure for the front module of a motor vehicle consisting of the base body 1 made of sheet steel, two headlight supports 2; 3 made of an unreinforced amorphous thermoplastic material (polycarbonate-ABS mixture), a cooling module carrier 4 made of a glass fiber reinforced thermoplastic (polyamide), a rib structure 5 made of a glass fiber reinforced thermoplastic (polyamide) and a panel 6 made of a glass fiber reinforced thermoplastic (polyamide) ,
Fig. 2 zeigt einen Schritt durch den Grundköφer 1, die Blende 6, die Rippenstruktur 5 und den Scheinwerferträger 3. Die Rippenstruktur 5 und die Blende 6 bilden eine Einheit und sind mit dem Grundkörper 1 verbunden. Der Scheinwerferträger 3 wird über die Dichtflächen 7, 8 auf dem Grundkörper 1 von der Rippenstruktur 5 getrennt, wird aber über die Kantenumspritzung 9 und die Durchspritzung 10 mit dem Grundkörper 1 formschlüssig und fest verbunden. In der Mitte ist der Grundkörper 1 durchbrochen dargestellt um die Form der Rippenstruktur zu zeigen.Fig. 2 shows a step through the Grundköφer 1, the panel 6, the rib structure 5 and the headlight bracket 3. The rib structure 5 and the panel 6 form a unit and are connected to the base body 1. The headlamp support 3 is separated from the rib structure 5 via the sealing surfaces 7, 8 on the base body 1, but is connected to the base body 1 in a form-fitting and fixed manner via the extrusion coating 9 and the injection 10. In the middle, the base body 1 is shown openwork to show the shape of the rib structure.
Fig. 3 zeigt einen Schritt durch die senkrechte Strebe des Grundkörpers 1 und horizontal durch den Scheinwerferträger 3 und den Kühlmodulträger 4.3 shows a step through the vertical strut of the base body 1 and horizontally through the headlight support 3 and the cooling module support 4.
Die Rippenstruktur 5 ist fest mit dem Grundkörper 1 verbunden. Durch die Dicht- flächen 11; 14 oberhalb und die Dichteflächen 12; 15 unterhalb des Grundkörpers 1 wird die Rippenstruktur vom Scheinwerferträger 3 und dem Kühlmodulträger 4 getrennt.The rib structure 5 is firmly connected to the base body 1. Through the sealing surfaces 11; 14 above and the sealing surfaces 12; 15 below the base body 1, the rib structure is separated from the headlight bracket 3 and the cooling module bracket 4.
Der Scheinwerferträger 3 ist über die Rippen 17, den Steg 19, den Durchspritzpunkt 18 und der Kantenumspritzung 13 mit Durchspritzpunkten mit dem Grundkörper formschlüssig und fest verbunden. Der Kühlmodulträger 4 ist über die Kantenumspritzung 16 formschlüssig mit dem Grundköφer 1 verbunden.The headlight bracket 3 is positively and firmly connected to the base body via the ribs 17, the web 19, the injection point 18 and the edge molding 13 with injection points. The cooling module carrier 4 is positively connected to the basic body 1 via the extrusion coating 16.
Beispiel 2Example 2
Fig. 4 zeigt eine Variante des Bauteiles nach Fig. 1 mit den gleichen Schnitt wie in Fig. 3, wobei jedoch die Kantenumspritzung 16 eine Z-Form aufweist, so dass der Kühlmodulträger fest mit dem Grundköφer 1 verbunden ist, aber eine Bewegung des Kühlmodulträgers in Längsrichtung der Kante 16 zugelassen wird.Fig. 4 shows a variant of the component according to Fig. 1 with the same section as in Fig. 3, but with the edge molding 16 having a Z-shape, so that the cooling module carrier is firmly connected to the basic body 1, but a movement of the cooling module carrier is permitted in the longitudinal direction of the edge 16.
Verfahrensbeispielprocess example
Ein schalenförmiger Grundköφer 1, vorzugsweise aus tiefgezogenem Stahlblech, Aluminiumblech oder auch Kunststoff, wird kontorschlüssig, automatisch über Roboter in ein geöffnetes Spritzgießwerkzeug 20 zweckmäßigerweise auf der Spritzseite 21 eingelegt.A bowl-shaped basic body 1, preferably made of deep-drawn sheet steel, aluminum sheet or plastic, is inserted into the open injection molding tool 20 appropriately on the injection side 21 in a contour-locking manner, automatically by robot.
Durch das Schließen des Spritzgießwerkzeuges (Fig. 5) wird der Grundköφer 1 durch die Konturfläche 24 der Spritzseite und durch Konturflächen 25 der Schließseite weitgehend formschlüssig, bis auf die Hohlräume 22, 23 für die Kunststoffe A und B, aufgenommen. Dadurch lassen sich Dichtflächen 7,8 (vergl. Fig. 1); 11, 12 (Fig. 3 und 6); 14, 15 (Fig. 3 und 4) usw. ausbilden, so dass die einzelnen Kunststoffe A und B während des Einspritzvorganges präzise getrennt in die vorgesehenen Hohlräume 22, 23 fließen können.By closing the injection mold (FIG. 5), the basic body 1 is largely positively received by the contour surface 24 of the injection side and by contour surfaces 25 of the closing side, except for the cavities 22, 23 for the plastics A and B. This allows sealing surfaces 7,8 (see FIG. 1); 11, 12 (Figures 3 and 6); 14, 15 (FIGS. 3 and 4), etc., so that the individual plastics A and B can flow precisely into the provided cavities 22, 23 during the injection process.
Nach dem Schließen des Spritzgießwerkzeuges injizieren die anliegenden Spritzgießeinheiten I und II gleichzeitig die jeweiligen Kunststoffmengen für die Kunststoffkomponenten A und B. Die Kunststoffschmelze A fließt durch den Spritzdruck der Spritzgießeinheit I in den Heißkanalverteiler 28 zur Heißkanaldüse 29 in den Kaltverteiler 30 zum Formnest (Hohlraum) 23. Die Heißkanaldüse könnte auch direkt auf dem Formnest 23 anbinden.After the injection mold has been closed, the adjacent injection molding units I and II simultaneously inject the respective plastic quantities for the plastic components A and B. The plastic melt A flows through the injection pressure of the injection molding unit I into the hot runner manifold 28 to the hot runner nozzle 29 and into the cold manifold 30 to the mold cavity (cavity) 23. The hot runner nozzle could also connect directly to the mold cavity 23.
Die Kunststoffschmelze B fließt gleichzeitig durch den Heißkanalverteiler 31 zu den Düsen 32, 33 und von dort direkt in die Hohlräume 22 oder über Kaltverteiler in diese Hohlräume.The plastic melt B simultaneously flows through the hot runner distributor 31 to the nozzles 32, 33 and from there directly into the cavities 22 or via cold distributors into these cavities.
Nach dem Einspritzvorgang wird üblicherweise die Kunststoffschmelze mit einemAfter the injection process, the plastic melt is usually filled with a
Nachdruck bis zum Siegelpunkt der Anschnitte beaufschlagt. Der Kunststoff wird über das Temperiersystem des Spritzgießwerkzeuges weiter abgekühlt.Repressed to the sealing point of the gate. The plastic is further cooled by the temperature control system of the injection mold.
Nach ca. 25 - - 50 sec. je nach Wanddicke und Größe des Formteils lässt sich das Werkzeug öffnen und das Mehrkomponenten-Spritzgießteil kann entformt werden.After approx. 25 - 50 seconds depending on the wall thickness and size of the molded part, the mold can be opened and the multi-component injection molded part can be removed from the mold.
Ein Handhabungsgerät führt den schalenformigen Grundköφer zu, legt diesen auf der Spritzseite der Kavität ab. Das Handlinggerät dreht die Greifer zur Schließseite und entnimmt das fertige Mehrkomponenten-Spritzgießteil und legt es üblicherweise auf ein Transportband, wobei während der Entnahme und dem Ablegen z.B. Angüsse entfernt werden können.A handling device feeds the bowl-shaped basic body, places it on the spray side of the cavity. The handling device turns the grippers to the closing side and removes the finished multi-component injection molded part and usually places it on a conveyor belt, whereby e.g. during removal and storage, Sprues can be removed.
Durch diese Verfahrensweise können Mehrkomponenten-Spritzgießteile in einem normalen Spritzgießzyklus von 35 -s- 120 sec. je nach Artikelgröße bzw. Gewicht hergestellt werden.With this procedure, multi-component injection molded parts can be produced in a normal injection molding cycle of 35 seconds to 120 seconds, depending on the size and weight of the article.
Der Grundköφer 1 ist bei Leichtbaustrukturen ohnehin vorgesehen. In anderen Fällen müsste ein Rahmenteil als Grundköφer 1 separat oder im Mehrkomponenten- Spritzgießwerkzeug in einem Arbeitsgang mitgespritzt werden. Das würde eine zu- sätzliche Operation für das Handhabungsgerät bedeuten (Entnahme Fertigteil und Entnahme Rahmenteil, Schwenken und Einlegen des Rahmenteils, dann Herausfahren und Ablegen des Fertigteils). The basic body 1 is provided anyway in the case of lightweight structures. In other cases, a frame part as basic body 1 would have to be injected separately or in a multi-component injection mold in one operation. This would mean an additional operation for the handling device (removal of the finished part and Removing the frame part, swiveling and inserting the frame part, then moving out and putting down the finished part).

Claims

Patentansprflche Patentansprflche
1. Verfahren zur Herstellung von Kunststoff-Metall- Verbundteilen bestehend aus wenigstens einem Grundköφer (1), bevorzugt aus Metall oder einem hochfesten Kunststoffmaterial, insbesondere bevorzugt aus Metall, und wenigstens einem ersten thermoplastischen Kunststoffteil (4; 5; 6) und einem zweiten thermoplastischen Kunststoffteil (2; 3), die mit dem Grundköφer (1) durch Spritzguss verbunden sind, wobei die Teile (2; 3) und (4; 5; 6) aus unterschiedlichem Kunststoffmaterial bestehen, durch Einlegen des Grundkör- pers (1) in ein Mehrkomponenten-Spritzgießwerkzeug mit mindestens zwei getrennten Schmelzeleitsystemen und mindestens zwei Kavitaten für das erste Teil (2; 3) und das zweite Teil (4; 5; 6) und anschließendes simultanes Einspritzen der verschiedenen Kunststoffe in die Kavitaten, wobei die Kavitaten durch die Kontur des Grundköφers (1) und spezielle Dichtungskanten des Spritzgusswerkzeuges, die die Kontur des Grundköφers (1) berühren, während des Spritzgießens voneinander getrennt werden.1. A method for producing plastic-metal composite parts consisting of at least one basic body (1), preferably made of metal or a high-strength plastic material, particularly preferably made of metal, and at least one first thermoplastic plastic part (4; 5; 6) and a second thermoplastic Plastic part (2; 3), which are connected to the basic body (1) by injection molding, the parts (2; 3) and (4; 5; 6) being made of different plastic material by inserting the basic body (1) into a multi-component injection mold with at least two separate melt control systems and at least two cavities for the first part (2; 3) and the second part (4; 5; 6) and subsequent simultaneous injection of the various plastics into the cavities, the cavities being contoured of the basic body (1) and special sealing edges of the injection molding tool, which touch the contour of the basic body (1), during the injection molding of be separated.
2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass als Metall für den Grundköφer Stahl, Aluminium oder Magnesium oder Legierungen dieser Metalle mit anderen Metallen verwendet werden.2. The method according to claim 1, characterized in that steel, aluminum or magnesium or alloys of these metals with other metals are used as the metal for the basic body.
3. Verfahren nach Ansprach 1 oder 2, dadurch gekennzeichnet, dass als thermoplastische Kunststoffe ein Kunststoff verwendet wird, der ausgewählt ist aus der Reihe: Polyamid, Polyester, Polyolefin, Styrol, Copolymerisat, Polycar- bonat, Polypropylen, Polyphenylensulfid, Polyimid, PSO oder PEEK oder möglichen Mischungen der genannten Polymere.3. The method according spoke 1 or 2, characterized in that a plastic is used as the thermoplastic, which is selected from the series: polyamide, polyester, polyolefin, styrene, copolymer, polycarbonate, polypropylene, polyphenylene sulfide, polyimide, PSO or PEEK or possible mixtures of the polymers mentioned.
4. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, das Kunststoffmaterial des ersten Kunststoffteiles (4; 5; 6) und/oder des zweiten Kunststoffteiles (2; 3) so an den Grundköφer (1) angeformt wird, dass eine formschlüssige Verbindung mit dem Grundköφer (1), insbesondere mit einer Kante (16) des Grundköφers (1) gebildet wird.4. The method according to any one of claims 1 to 3, characterized in that the plastic material of the first plastic part (4; 5; 6) and / or the second plastic part (2; 3) is molded onto the Grundköφer (1) that a positive connection with the basic body (1), in particular with an edge (16) of the basic body (1) is formed.
5. Verfahren nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, das ein mehrteiliger Grundköφer verwendet wird, wobei durch das Spritzgießen die einzelnen Teile des Grundköφers (1) über ein thermoplastisches Kunststoffteil miteinander verbunden werden. 5. The method according to any one of claims 1 to 4, characterized in that a multi-part basic body is used, the individual parts of the basic body (1) being connected to one another via a thermoplastic plastic part by injection molding.
EP02708322A 2001-02-13 2002-01-31 Method for producing composite parts by multicomponent injection molding Withdrawn EP1361943A1 (en)

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DE10106458A DE10106458A1 (en) 2001-02-13 2001-02-13 Process for the production of composite parts by multi-component injection molding
PCT/EP2002/000985 WO2002064343A1 (en) 2001-02-13 2002-01-31 Method for producing composite parts by multicomponent injection molding

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DE10106458A1 (en) 2002-08-29
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MXPA03007200A (en) 2004-06-30

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