EP1255632A1 - Method for producing components in the engine compartment of motor vehicles by means of thermoplastic materials - Google Patents

Method for producing components in the engine compartment of motor vehicles by means of thermoplastic materials

Info

Publication number
EP1255632A1
EP1255632A1 EP01923546A EP01923546A EP1255632A1 EP 1255632 A1 EP1255632 A1 EP 1255632A1 EP 01923546 A EP01923546 A EP 01923546A EP 01923546 A EP01923546 A EP 01923546A EP 1255632 A1 EP1255632 A1 EP 1255632A1
Authority
EP
European Patent Office
Prior art keywords
components
engine compartment
thermoplastic polymer
wall thickness
integration
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Withdrawn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
EP01923546A
Other languages
German (de)
French (fr)
Inventor
Matthias SCHÜMANN
Ulrich Haack
Holger Klink
Olaf Herd
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.)
Ticona GmbH
Original Assignee
Ticona 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
Priority claimed from DE2000102631 external-priority patent/DE10002631A1/en
Priority claimed from DE2000102633 external-priority patent/DE10002633A1/en
Application filed by Ticona GmbH filed Critical Ticona GmbH
Publication of EP1255632A1 publication Critical patent/EP1255632A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • 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
    • B29C43/34—Feeding the material to the mould or the compression means
    • 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
    • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • B29K2105/12—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of short lengths, e.g. chopped filaments, staple fibres or bristles

Definitions

  • the present invention relates to a method for producing components in the engine compartment of motor vehicles with thermoplastic materials and molded articles produced by this method, in particular labyrinth plates for automatic transmissions, containing at least one thermoplastic material.
  • Components in the engine compartment are usually made from sheet steel, die-cast metal, hardenable molding compounds or from injection-molded thermoplastics.
  • the materials mentioned with the corresponding methods each have disadvantages.
  • the required tolerances, such as planicity can often not be achieved. This is also due to the strong orientation of the polymer used, which is determined by the material itself and by the sprue and the sprue layer.
  • the object of the present invention is to provide an economical and environmentally friendly method for producing components in the engine compartment with a higher degree of integration.
  • the object of the present invention is achieved by a method for producing components in the engine compartment with a higher degree of integration, at least one thermoplastic polymer being pre-plastified and the plasticate being deposited in a plastic state in a defined manner in a pressing tool and being shaped in a subsequent pressing process.
  • the invention thus relates to the production of components in the engine compartment by the pressing process.
  • the invention shows a new processing possibility using thermoplastic polymers, which leads to dimensionally more demanding components.
  • the material is pre-plasticized and the plasticate is placed in the pressing tool in a defined plastic state and shaped in a subsequent pressing process.
  • the production of even complex components with appropriate quality features at low manufacturing costs is possible.
  • the achievable fiber lengths in the component are in the range from 0.5 mm to 50 mm, preferably 1 mm to 25 mm, particularly preferably in the range from 1 mm to 12 mm. Due to the low shrinkage anisotropy, a small delay can be achieved. Shrinkage anisotropy is the ratio of longitudinal to transverse shrinkage.
  • the longitudinal shrinkage, i.e. the shrinkage in the flow direction is generally 0.25%
  • the transverse shrinkage i.e. the shrinkage transverse to the flow direction
  • the long flow paths with small wall thicknesses enable a high fiber content. This high fiber content remains largely the same in all molded part areas when using the method according to the invention.
  • the plastic is a coherent part and its compact shape makes it easy to handle.
  • the shape of the plastic can be adapted to the molded part.
  • the press molding can also be carried out with inserts, and textile and / or film back pressing is also possible.
  • Long fiber pellets are generally thermoplastic materials that are reinforced with fibers of at least 0.5 mm in length and a maximum of 50 mm in length.
  • the length of the fibers is preferably between 1 mm and 25 mm, in particular 1 mm to 12 mm.
  • the length of the granules and the fibers are mostly identical for these materials.
  • the fibers in the granulate can be completely impregnated with the thermoplastic or can be present as a plastic-coated glass fiber bundle.
  • thermoplastic polymers such as polyamides (PA), aromatic polyamides (PPA),
  • Polyether sulfide PES
  • polyether imide PEI
  • polyurethane PU
  • polyphenylene sulfide PPS
  • polyester PBT / PET
  • polyether ketone PEEK, PEK
  • Suitable thermoplastic polymers are known to the person skilled in the art and are described, for example, in the plastic paperback (Saechtling, 27th edition 1998, Hanser Verlag) in part 4 on pages 465 to 542.
  • components in the engine compartment can be manufactured with a higher degree of integration using the pressing method.
  • the components in the engine compartment have a wall thickness of 0.5 mm to 50 mm, preferably 0.5 mm to 10 mm, particularly preferably 1 mm to 5 mm.
  • thermoplastic materials with a special viscosity and long fibers such as glass fibers, carbon fibers or steel fibers as fillers and / or reinforcing materials has proven to be particularly advantageous.
  • the new method enables the stress-free, low-distortion production of a component according to the invention in the engine compartment. The smallest tolerances, even with larger ones
  • the component according to the invention in the engine compartment has a lower weight and a higher internal damping.
  • the manufacturing costs of the method according to the invention are significantly lower.
  • a rework absolutely necessary in conventional processes, such as Example face grinding is not required in the method according to the invention.
  • the advantages of the present invention enable the production of molded parts, in particular labyrinth plates for automatic transmissions, with a higher degree of integration.
  • long fiber pellets are processed in a suitable plating device and then the plasticate is placed in the pressing tool and pressed to the desired molded part.
  • the design criteria for press tools can be used for the design of the press tool with this method.
  • the warpage only needs to be taken into account to a lesser extent, which simplifies and makes the design of the tools cheaper. Due to the longer service life of the tools, they only have to be revised with higher casting numbers, which has a positive effect on the weight and costs.
  • the present invention also relates to labyrinth plates for automatic transmissions containing at least one thermoplastic.
  • Components in the engine compartment are usually made from sheet steel, die-cast metal, hardenable molding compounds or from injection-molded thermoplastics.
  • the materials mentioned with the corresponding methods each have disadvantages.
  • the required tolerances, such as planicity can often not be achieved. This is also due to the strong orientation of the polymer used, which is determined by the material itself and by the sprue and the sprue layer.
  • labyrinth plates for automatic transmissions are usually manufactured in a complex process using metal die casting with subsequent exciting machining. Until now, labyrinth plates for automatic transmissions could not be economically produced from thermoplastics.
  • the object of the present invention is also to provide labyrinth plates for automatic transmissions with a higher degree of integration and an economical and environmentally friendly method for their production.
  • the object of the present invention is achieved in that labyrinth plates for automatic transmissions with a higher degree of integration are obtained from at least one thermoplastic polymer, by plasticizing at least one thermoplastic polymer before and storing the plasticate in a plastic state in a defined manner in a pressing tool and in a subsequent one Pressing is formed.
  • the invention shows a new processing option using thermoplastic materials, which leads to more dimensionally demanding components.
  • the material is pre-plasticized and the plasticate is placed in the pressing tool in a defined plastic state and shaped in a subsequent pressing process. This means that extensive rework is not necessary.
  • the production of even complex components with appropriate quality features at low manufacturing costs is possible. This applies both to components with large heights and to those that have a low overall height.
  • thermoplastic polymers such as polyamides (PA), aromatic polyamides (PPA), polyether sulfides (PES), polyetherimides (PEI), polyurethanes (PU), Polyphenylensulf.de (PPS), polyester (PBT / PET) or polyether ketones (PEEK, PEK ) suitable, which may contain fillers and / or reinforcing materials such as carbon fiber or glass fiber.
  • labyrinth plates for automatic transmissions can be produced by the pressing process. Warp-free / low-warp panels can be produced on a large scale, inexpensively with a higher degree of integration.
  • the labyrinth plates for automatic transmissions have a wall thickness of 0.1 mm to 30 mm, preferably from 0.5 mm to 10 mm, particularly preferably from 1 mm to 5 mm.
  • thermoplastic materials with a special viscosity and long fibers such as glass fibers or carbon fibers as fillers and / or reinforcing materials has proven to be particularly advantageous.
  • the new method enables the stress-free, low-distortion production of a labyrinth plate according to the invention for automatic transmissions. The smallest tolerances are observed, even with larger wall thickness differences compared to injection molded components. A higher degree of integration is thus achieved.
  • the labyrinth plate according to the invention for automatic transmissions has a lower weight and a higher internal damping.
  • the manufacturing costs of the method according to the invention are significantly lower. Reworking that is absolutely necessary in conventional methods is not necessary in the method according to the invention.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Manufacture Of Motors, Generators (AREA)

Abstract

The present invention relates to a method for producing components in the engine compartment. Said components have a larger scale integration. At least one thermoplastic polymer is pre-plasticised and the plasticised polymer is stored in the plastic state in a compression moulding die in a defined manner and is subsequently formed in a moulding cycle. The invention also relates to components, especially labyrinth plates for automatic transmissions, produced according to the inventive method.

Description

Beschreibung description
Verfahren zur Herstellung von Bauteilen im Motorraum von Kraftfahrzeugen mit thermoplastischen WerkstoffenProcess for the production of components in the engine compartment of motor vehicles with thermoplastic materials
Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung von Bauteilen im Motorraum von Kraftfahrzeugen mit thermoplastischen Werkstoffen und nach diesem Verfahren hergestellte Formkörper, insbesondere Labyrinth-Platten für Automatikgetriebe, enthaltend mindestens einen thermoplastischen Kunststoff.The present invention relates to a method for producing components in the engine compartment of motor vehicles with thermoplastic materials and molded articles produced by this method, in particular labyrinth plates for automatic transmissions, containing at least one thermoplastic material.
Diese Anmeldung betrifft die deutschen Patentanmeldungen Nr. DE 10002633.8 und 10002631.1 , worauf Bezug genommen wird.This application relates to German patent applications Nos. DE 10002633.8 and 10002631.1, to which reference is made.
Bauteile im Motorraum werden gewöhnlich aus Stahlblech, Metall-Druckguß, härtbaren Formmassen oder aus spritzgegossenen Thermoplasten hergestellt. Die erwähnten Materialien mit den entsprechenden Verfahren weisen jeweils Nachteile auf. Bei den spritzgegossenen thermoplastischen Bauteilen können oft die geforderten Toleranzen, wie Planizitäten nicht erzielt werden. Das liegt auch an der starken Orientierung des verwendeten Polymers, die durch das Material selbst und durch den Anguß sowie die Angußlage vorgegeben ist.Components in the engine compartment are usually made from sheet steel, die-cast metal, hardenable molding compounds or from injection-molded thermoplastics. The materials mentioned with the corresponding methods each have disadvantages. In the case of injection molded thermoplastic components, the required tolerances, such as planicity, can often not be achieved. This is also due to the strong orientation of the polymer used, which is determined by the material itself and by the sprue and the sprue layer.
Bisherig werden einige Bauteile im Motorraum in aufwendigen Verfahren unter Verwendung aushärtender Harze oder metallischer Werkstoffe mit entsprechender Nachbearbeitung hergestellt.So far, some components in the engine compartment have been produced in complex processes using hardening resins or metallic materials with appropriate post-processing.
Die Aufgabe der vorliegenden Erfindung liegt darin, ein wirtschaftliches und umweltfreundliches Verfahren zur Herstellung von Bauteilen im Motorraum mit einem höheren Integrationsgrad bereitzustellen.The object of the present invention is to provide an economical and environmentally friendly method for producing components in the engine compartment with a higher degree of integration.
Die Aufgabe der vorliegenden Erfindung wird gelöst durch ein Verfahren zur Herstellung von Bauteilen im Motorraum mit einem höheren Integrationsgrad, wobei mindestens ein thermoplastisches Polymer vorplastifiziert und das Plastifikat in plastischen Zustand in ein Preßwerkzeug definiert abgelegt und in einem anschließenden Preßvorgang geformt wird. Die Erfindung bezieht sich somit auf die Herstellung von Bauteilen im Motorraum nach dem Preßverfahren.The object of the present invention is achieved by a method for producing components in the engine compartment with a higher degree of integration, at least one thermoplastic polymer being pre-plastified and the plasticate being deposited in a plastic state in a defined manner in a pressing tool and being shaped in a subsequent pressing process. The invention thus relates to the production of components in the engine compartment by the pressing process.
Die Erfindung zeigt eine neue Verarbeitungsmöglichkeit unter Verwendung thermoplastischer Polymere auf, die zu maßlich anspruchsvolleren Bauteilen führt. Hierbei wird das Material vorplastifiziert und das Plastifikat in noch plastischen Zustand in das Preßwerkzeug definiert abgelegt und in einem anschließenden Preßvorgang geformt. Somit sind aufwendige Nacharbeiten nicht notwendig. Insbesondere wird die Herstellung selbst von komplexen Bauteilen mit entsprechenden Qualitätsmerkmalen bei günstigen Herstellkosten möglich. Dies trifft sowohl für Bauteile mit großen Höhen-Maßen zu als auch solche, die nur eine geringe Bauhöhe aufweisen. Hierbei lassen sich im Formteil hohe Faserlängen erreichen, da die Faserlängen beim Plastifizieren wenig geschädigt wird und somit die Faserlänge der eingesetzten Langfaserpellets auch im Bauteil weitgehend erhalten bleibt. Die erreichbaren Faserlängen im Bauteil liegen im Bereich von 0,5 mm bis 50 mm, bevorzugt 1 mm bis 25 mm, besonders bevorzugt im Bereich von 1 mm bis 12 mm. Durch die geringe Schwindungsanisotropie kann ein geringer Verzug erreicht werden. Unter Schwindungsanisotropie versteht man das Verhältnis von Längs- zu Querschwindung. Die Längsschwindung, also die Schwindung in Fließrichtung, liegt im Allgemeinen bei 0,25%, die Querschwindung, also die Schwindung quer zur Fließrichtung, beträgt meist 0,3%. Die langen Fließwege bei geringen Wanddicken ermöglichen einen hohen Fasergehalt. Diese hohe Fasergehalt bleibt bei Anwendung des erfindungsgemäßen Verfahrens in allen Formteilbereichen weitgehend gleich. Das Plastifikat ist als zusammenhängendes Teil und durch seine kompakte Form einfach zu handhaben. In einer vorteilhaften Ausführung des erfindungsgemäßen Verfahrens kann die Form des Plastifikates dem Formteil angepaßt werden. In weiteren vorteilhaften Ausführungen des erfindungsgemäßen Verfahrens kann das Preßformen auch mit Inserts durchgeführt werden, ebenso ist das Textil- und/oder Folienhinterpressen möglich.The invention shows a new processing possibility using thermoplastic polymers, which leads to dimensionally more demanding components. Here, the material is pre-plasticized and the plasticate is placed in the pressing tool in a defined plastic state and shaped in a subsequent pressing process. This means that extensive rework is not necessary. In particular, the production of even complex components with appropriate quality features at low manufacturing costs is possible. This applies to components with large heights as well as those with a low overall height. In this way, high fiber lengths can be achieved in the molded part, since the fiber lengths are little damaged during plasticizing and the fiber length of the long fiber pellets used is therefore largely retained in the component. The achievable fiber lengths in the component are in the range from 0.5 mm to 50 mm, preferably 1 mm to 25 mm, particularly preferably in the range from 1 mm to 12 mm. Due to the low shrinkage anisotropy, a small delay can be achieved. Shrinkage anisotropy is the ratio of longitudinal to transverse shrinkage. The longitudinal shrinkage, i.e. the shrinkage in the flow direction, is generally 0.25%, the transverse shrinkage, i.e. the shrinkage transverse to the flow direction, is usually 0.3%. The long flow paths with small wall thicknesses enable a high fiber content. This high fiber content remains largely the same in all molded part areas when using the method according to the invention. The plastic is a coherent part and its compact shape makes it easy to handle. In an advantageous embodiment of the method according to the invention, the shape of the plastic can be adapted to the molded part. In further advantageous embodiments of the method according to the invention, the press molding can also be carried out with inserts, and textile and / or film back pressing is also possible.
Auch Produktionsrückstände können im erfindungsgemäßen Verfahren verarbeitet werden, so daß ein besonders günstiges in-house-recycling möglich ist. Als Langfaserpellets bezeichnet man im Allgemeinen thermoplastische Kunststoffe, die verstärkt sind mit Fasern von mindestens 0,5 mm Länge, maximal 50 mm Länge. Bevorzugt liegt die Länge der Fasern zwischen 1 mm und 25 mm, insbesondere 1 mm bis 12 mm. Die Länge des Granulates und der Fasern sind bei diesen Materialien meist identisch. Hierbei können die Fasern im Granulatkorn vollständig mit dem Thermoplasten imprägniert sein oder als kunststoffummanteltes Glasfaserbündel vorliegen.Production residues can also be processed in the process according to the invention, so that particularly inexpensive in-house recycling is possible. Long fiber pellets are generally thermoplastic materials that are reinforced with fibers of at least 0.5 mm in length and a maximum of 50 mm in length. The length of the fibers is preferably between 1 mm and 25 mm, in particular 1 mm to 12 mm. The length of the granules and the fibers are mostly identical for these materials. The fibers in the granulate can be completely impregnated with the thermoplastic or can be present as a plastic-coated glass fiber bundle.
Es können somit Bauteilen im Motorraum, auch großflächig, kostengünstig, mit einem höheren Integrationsgrad hergestellt werden. Erfindungsgemäß sind thermoplastische Polymere wie Polyamide (PA), aromatische Polyamide (PPA),Components in the engine compartment can thus be manufactured with a higher degree of integration, even over a large area, inexpensively. According to the invention, thermoplastic polymers such as polyamides (PA), aromatic polyamides (PPA),
Polyethersulfide (PES), Polyetherimide(PEI), Polyurethane (PU), Polyphenylensulfide (PPS), Polyester (PBT/PET) oder Polyetherketone (PEEK, PEK) geeignet, die Füll- und/oder Verstärkungsstoffe, wie Kohlefaser, Glasfaser oder Stahlfaser enthalten können. Geeignete thermoplastische Polymere sind dem Fachmann bekannt und werden zum Beispiel im Kunststoff-Taschenbuch (Saechtling, 27. Ausgabe 1998, Hanser Verlag) in Teil 4 auf den Seiten 465 bis 542 beschrieben.Polyether sulfide (PES), polyether imide (PEI), polyurethane (PU), polyphenylene sulfide (PPS), polyester (PBT / PET) or polyether ketone (PEEK, PEK) are suitable, which contain fillers and / or reinforcing materials such as carbon fiber, glass fiber or steel fiber can. Suitable thermoplastic polymers are known to the person skilled in the art and are described, for example, in the plastic paperback (Saechtling, 27th edition 1998, Hanser Verlag) in part 4 on pages 465 to 542.
Gemäß der Erfindung können Bauteile im Motorraum nach dem Preßverfahren mit einem höheren Integrationsgrad hergestellt werden. Die Bauteile im Motorraum weisen eine Wanddicke von 0,5 mm bis 50 mm, bevorzugt von 0,5 mm bis 10 mm, besonders bevorzugt von 1 mm bis 5 mm auf.According to the invention, components in the engine compartment can be manufactured with a higher degree of integration using the pressing method. The components in the engine compartment have a wall thickness of 0.5 mm to 50 mm, preferably 0.5 mm to 10 mm, particularly preferably 1 mm to 5 mm.
Als besonders vorteilhaft hat sich der Einsatz von thermoplastischen Kunststoffen mit einer speziellen Viskosität und Langfasern, wie Glasfasern, Kohlefasern oder Stahlfasern als Füll- und/oder Verstärkungsstoffe erwiesen. Das neue Verfahren ermöglicht die spannungsfreie, verzugsarme Herstellung eines erfindungsgemäßen Bauteils im Motorraum. Dabei werden geringste Toleranzen, selbst bei größerenThe use of thermoplastic materials with a special viscosity and long fibers such as glass fibers, carbon fibers or steel fibers as fillers and / or reinforcing materials has proven to be particularly advantageous. The new method enables the stress-free, low-distortion production of a component according to the invention in the engine compartment. The smallest tolerances, even with larger ones
Wanddicken-Unterschieden im Vergleich zu spritzgegossenen Bauteilen eingehalten. Es wird somit ein höherer Integrationsgrad erreicht. Das erfindungsgemäße Bauteil im Motorraum weist ein geringeres Gewicht und eine höhere Eigendämpfung auf. Die Herstellungskosten des erfindungsgemäßen Verfahrens sind deutlich niedriger. Eine bei herkömmlichen Verfahren zwingend erforderliche Nacharbeitung, wie zum Beispiel Planschleifen, ist bei dem erfindungsgemäßen Verfahren nicht erforderlich. Die Vorteile der vorliegenden Erfindung ermöglichen die Herstellung von Formteilen, insbesondere Labyrinth-Platten für Automatikgetrieben, mit einem höheren Integrationsgrad.Differences in wall thickness compared to injection molded components. A higher degree of integration is thus achieved. The component according to the invention in the engine compartment has a lower weight and a higher internal damping. The manufacturing costs of the method according to the invention are significantly lower. A rework absolutely necessary in conventional processes, such as Example face grinding is not required in the method according to the invention. The advantages of the present invention enable the production of molded parts, in particular labyrinth plates for automatic transmissions, with a higher degree of integration.
Bei dem erfindungsgemäßen Verfahren werden Langfaserpellets in einer geeigneten Platifiziervorrichtung aufbereitet und anschließend das Plastifikat in das Preßwerkzeug gelegt und zum gewünschten Formteil verpreßt. Für die Gestaltung des Preßwerkzeuges können bei diesem Verfahren die Gestaltungskriterien für Preßwerkzeuge angewandt werden. Im Gegensatz zur Gestaltung von Spritzgußwerkzeugen brauch hierbei der Verzug nur in geringerem Maße berücksichtigt werden, was die Gestaltung der Werkzeuge vereinfacht und verbilligt. Durch die höheren Standzeiten der Werkzeuge müssen diese erst bei höheren Abgußzahlen überarbeitet werden, was sich positiv auf das Gewicht und die Kosten auswirkt.In the method according to the invention, long fiber pellets are processed in a suitable plating device and then the plasticate is placed in the pressing tool and pressed to the desired molded part. The design criteria for press tools can be used for the design of the press tool with this method. In contrast to the design of injection molding tools, the warpage only needs to be taken into account to a lesser extent, which simplifies and makes the design of the tools cheaper. Due to the longer service life of the tools, they only have to be revised with higher casting numbers, which has a positive effect on the weight and costs.
Die vorliegende Erfindung betrifft außerdem Labyrinth-Platten für Automatikgetriebe, enthaltend mindestens einen thermoplastischen Kunststoff.The present invention also relates to labyrinth plates for automatic transmissions containing at least one thermoplastic.
Bauteile im Motorraum werden gewöhnlich aus Stahlblech, Metall-Druckguß, härtbaren Formmassen oder aus spritzgegossenen Thermoplasten hergestellt. Die erwähnten Materialien mit den entsprechenden Verfahren weisen jeweils Nachteile auf. Bei den spritzgegossenen thermoplastischen Bauteilen können oft die geforderten Toleranzen, wie Planizitäten nicht erzielt werden. Das liegt auch an der starken Orientierung des verwendeten Polymers, die durch das Material selbst und durch den Anguß sowie die Angußlage vorgegeben ist.Components in the engine compartment are usually made from sheet steel, die-cast metal, hardenable molding compounds or from injection-molded thermoplastics. The materials mentioned with the corresponding methods each have disadvantages. In the case of injection molded thermoplastic components, the required tolerances, such as planicity, can often not be achieved. This is also due to the strong orientation of the polymer used, which is determined by the material itself and by the sprue and the sprue layer.
Bisherige Labyrinth-Platten für Automatikgetriebe werden gewöhnlich in einem aufwendigen Verfahren unter Verwendung von Metall-Druckguß mit anschließender spannender Bearbeitung hergestellt. Labyrinth-Platten für Automatikgetriebe konnten bisher wirtschaftlich nicht aus Thermoplasten hergestellt werden. Die Aufgabe der vorliegenden Erfindung liegt auch darin, Labyrinth-Platten für Automatikgetriebe mit einem höheren Integrationsgrad und ein wirtschaftliches und umweltfreundliches Verfahren zu deren Herstellung bereitzustellen.Previous labyrinth plates for automatic transmissions are usually manufactured in a complex process using metal die casting with subsequent exciting machining. Until now, labyrinth plates for automatic transmissions could not be economically produced from thermoplastics. The object of the present invention is also to provide labyrinth plates for automatic transmissions with a higher degree of integration and an economical and environmentally friendly method for their production.
Die Aufgabe der vorliegenden Erfindung wird gelöst, dadurch, daß Labyrinth-Platten für Automatikgetriebe mit einem höheren Integrationsgrad aus mindestens einem thermoplastischen Polymer erhalten werden, indem mindestens ein thermoplastisches Polymer vor plastifiziert und das Plastifikat in plastischen Zustand in ein Preßwerkzeug definiert abgelegt und in einem anschließenden Preßvorgang geformt wird.The object of the present invention is achieved in that labyrinth plates for automatic transmissions with a higher degree of integration are obtained from at least one thermoplastic polymer, by plasticizing at least one thermoplastic polymer before and storing the plasticate in a plastic state in a defined manner in a pressing tool and in a subsequent one Pressing is formed.
Die Erfindung zeigt eine neue Verarbeitungsmöglichkeit unter Verwendung thermoplastischer Kunststoffe auf, die zu maßlich anspruchsvolleren Bauteilen führt. Hierbei wird das Material vorplastifiziert und das Plastifikat in noch plastischen Zustand in das Preßwerkzeug definiert abgelegt und in einem anschließenden Preßvorgang geformt. Somit sind aufwendige Nacharbeiten nicht notwendig. Insbesondere wird die Herstellung selbst von komplexen Bauteilen mit entsprechenden Qualitätsmerkmalen bei günstigen Herstellkosten möglich. Dies trifft sowohl für Bauteile mit großen Höhen-Maßen zu als auch für solche, die nur eine geringe Bauhöhe aufweisen.The invention shows a new processing option using thermoplastic materials, which leads to more dimensionally demanding components. Here, the material is pre-plasticized and the plasticate is placed in the pressing tool in a defined plastic state and shaped in a subsequent pressing process. This means that extensive rework is not necessary. In particular, the production of even complex components with appropriate quality features at low manufacturing costs is possible. This applies both to components with large heights and to those that have a low overall height.
Es können somit Platten, auch großflächig, kostengünstig mit einem höheren Integrationsgrad hergestellt werden. Erfindungsgemäß sind thermoplastische Polymere wie Polyamide (PA), aromatische Polyamide (PPA), Polyethersulfide (PES), Polyetherimide (PEI), Polyurethane (PU), Polyphenylensulf.de (PPS), Polyester (PBT/PET) oder Polyetherketone (PEEK, PEK) geeignet, die Füll- und/oder Verstärkungsstoffe, wie Kohlefaser oder Glasfaser enthalten können.It is thus possible to produce plates, even over a large area, inexpensively with a higher degree of integration. According to the invention, thermoplastic polymers such as polyamides (PA), aromatic polyamides (PPA), polyether sulfides (PES), polyetherimides (PEI), polyurethanes (PU), Polyphenylensulf.de (PPS), polyester (PBT / PET) or polyether ketones (PEEK, PEK ) suitable, which may contain fillers and / or reinforcing materials such as carbon fiber or glass fiber.
Gemäß der Erfindung können Labyrinth-Platten für Automatikgetriebe nach dem Preßverfahren hergestellt werden. Es können verzugsfreie /-arme Platten, großflächig, kostengünstig mit einem höheren Integrationsgrad hergestellt werden. Die Labyrinth-Platten für Automatikgetriebe weisen eine Wanddicke von 0,1 mm bis 30 mm, bevorzugt von 0,5 mm bis 10 mm, besonders bevorzugt von 1 mm bis 5 mm auf.According to the invention, labyrinth plates for automatic transmissions can be produced by the pressing process. Warp-free / low-warp panels can be produced on a large scale, inexpensively with a higher degree of integration. The labyrinth plates for automatic transmissions have a wall thickness of 0.1 mm to 30 mm, preferably from 0.5 mm to 10 mm, particularly preferably from 1 mm to 5 mm.
Als besonders vorteilhaft hat sich der Einsatz von thermoplastischen Kunststoffen mit einer speziellen Viskosität und Langfasern, wie Glasfasern oder Kohlefaser als Füll- und/oder Verstärkungsstoff erwiesen. Das neue Verfahren ermöglicht die spannungsfreie, verzugsarme Herstellung einer erfindungsgemäßen Labyrinth-Platte für Automatikgetriebe . Dabei werden geringste Toleranzen, selbst bei größeren Wanddicken-Unterschieden im Vergleich zu spritzgegossenen Bauteilen eingehalten. Es wird somit ein höherer Integrationsgrad erreicht. Die erfindungsgemäße Labyrinth-Platte für Automatikgetriebe, weist ein geringeres Gewicht und eine höhere Eigendämpfung auf. Die Herstellungskosten des erfindungsgemäßen Verfahrens sind deutlich niedriger. Eine bei herkömmlichen Verfahren zwingend erforderliche Nacharbeitung ist bei dem erfindungsgemäßen Verfahren nicht erforderlich. The use of thermoplastic materials with a special viscosity and long fibers such as glass fibers or carbon fibers as fillers and / or reinforcing materials has proven to be particularly advantageous. The new method enables the stress-free, low-distortion production of a labyrinth plate according to the invention for automatic transmissions. The smallest tolerances are observed, even with larger wall thickness differences compared to injection molded components. A higher degree of integration is thus achieved. The labyrinth plate according to the invention for automatic transmissions has a lower weight and a higher internal damping. The manufacturing costs of the method according to the invention are significantly lower. Reworking that is absolutely necessary in conventional methods is not necessary in the method according to the invention.

Claims

Patentansprüche claims
1. Verfahren zur Herstellung von Bauteilen im Motorraum mit einem höheren Integrationsgrad, wobei mindestens ein thermoplastisches Polymer vorplastifiziert und das Plastifikat in plastischen Zustand in ein Preßwerkzeug definiert abgelegt und in einem anschließenden Preßvorgang geformt wird.1. Process for the production of components in the engine compartment with a higher degree of integration, wherein at least one thermoplastic polymer is pre-plastified and the plastic is deposited in a plastic state in a defined manner in a pressing tool and is shaped in a subsequent pressing process.
2. Verfahren nach Anspruch 1 , wobei das thermoplastische Polymer ein oder mehrere Polymere wie Polyamide (PA), aromatische Polyamide (PPA), Polyethersulfide (PES), Polyetherimide (PEI), Polyurethane (PU), Polyphenylensulfide (PPS), Polyester (PBT/PET) oder Polyetherketone (PEEK, PEK) enthält, die Füll- und/oder Verstärkungsstoffe, wie Kohlefaser,2. The method according to claim 1, wherein the thermoplastic polymer one or more polymers such as polyamides (PA), aromatic polyamides (PPA), polyether sulfides (PES), polyetherimides (PEI), polyurethanes (PU), polyphenylene sulfides (PPS), polyester (PBT) / PET) or polyether ketones (PEEK, PEK) containing fillers and / or reinforcing materials, such as carbon fiber,
Glasfaser oder Stahlfaser enthalten können.Glass fiber or steel fiber can contain.
3. Verfahren nach Anspruch 1 oder 2, wobei die Bauteilen im Motorraum eine Wanddicke von 0,1 mm bis 50 mm aufweisen.3. The method of claim 1 or 2, wherein the components in the engine compartment have a wall thickness of 0.1 mm to 50 mm.
4. Verfahren nach einem oder mehreren der Ansprüche 1 bis 4, wobei die Bauteilen im Motorraum eine Wanddicke von 0,5 mm bis 10 mm aufweisen.4. The method according to one or more of claims 1 to 4, wherein the components in the engine compartment have a wall thickness of 0.5 mm to 10 mm.
5. Verfahren nach einem oder mehreren der Ansprüche 1 bis 5, wobei die Bauteilen im Motorraum eine Wanddicke von 1 mm bis 5 mm aufweisen.5. The method according to one or more of claims 1 to 5, wherein the components in the engine compartment have a wall thickness of 1 mm to 5 mm.
6. Bauteilen im Motorraum mit einem höheren Integrationsgrad erhältlich nach einem Verfahren gemäß einem oder mehreren der Ansprüche 1 bis 6.6. Components in the engine compartment with a higher degree of integration obtainable by a method according to one or more of claims 1 to 6.
7. Labyrinth-Platten für Automatikgetriebe mit einem höheren Integrationsgrad aus mindestens einem thermoplastischen Polymer, erhältlich in dem mindestens ein thermoplastisches Polymer vor plastifiziert und das Plastifikat in plastischen Zustand in ein Preßwerkzeug definiert abgelegt und in einem anschließenden Preßvorgang geformt wird.7. Labyrinth plates for automatic transmissions with a higher degree of integration made of at least one thermoplastic polymer, obtainable in which at least one thermoplastic polymer is plasticized before and the plasticate is deposited in a plastic state in a defined manner in a pressing tool and is shaped in a subsequent pressing process.
8. Labyrinth-Platten nach Anspruch 7, wobei das thermoplastische Polymere ein oder mehrere Polymer wie z. B. Polyamide (PA), aromatische Polyamide (PPA), Polyethersulfide (PES), Polyetherimide(PEI), Polyurethane (PU), Polyphenylensulfide (PPS), Polyester (PBT/PET) oder Polyetherketone (PEEK, PEK) enthält, die Füll- und/oder Verstärkungsstoffe, wie Kohlefaser oder Glasfaser enthalten können.8. labyrinth plates according to claim 7, wherein the thermoplastic polymer one or more polymer such. B. polyamides (PA), aromatic polyamides (PPA), polyether sulfide (PES), polyether imide (PEI), polyurethane (PU), polyphenylene sulfide (PPS), polyester (PBT / PET) or polyether ketone (PEEK, PEK), which contains fillers and / or reinforcing materials such as carbon fiber or Glass fiber can contain.
9. Labyrinth-Platte nach Anspruch 7 oder 8, wobei die Platte eine Wanddicke von 0,1 mm bis 30 mm aufweist.9. labyrinth plate according to claim 7 or 8, wherein the plate has a wall thickness of 0.1 mm to 30 mm.
10. Labyrinth-Platte nach einem oder mehreren der Ansprüche 7 bis 9, wobei die Platte eine Wanddicke von 0,5 mm bis 10 mm aufweist.10. labyrinth plate according to one or more of claims 7 to 9, wherein the plate has a wall thickness of 0.5 mm to 10 mm.
11. Labyrinth-Platte nach einem oder mehreren der Ansprüche 7 bis 9, wobei die Platte eine Wanddicke von 1 mm bis 5 mm aufweist.11. labyrinth plate according to one or more of claims 7 to 9, wherein the plate has a wall thickness of 1 mm to 5 mm.
12. Verfahren zur Herstellung einer Labyrinth-Platte für Automatikgetriebe mit einem höheren Integrationsgrad aus mindestens einem thermoplastischen Polymer, wobei mindestens ein thermoplastisches Polymer vorplastifiziert und das Plastifikat in plastischen Zustand in ein Preßwerkzeug definiert abgelegt und in einem anschließenden Preßvorgang geformt wird. 12. A method for producing a labyrinth plate for automatic transmissions with a higher degree of integration from at least one thermoplastic polymer, at least one thermoplastic polymer being pre-plastified and the plastic in a plastic state being deposited in a defined manner in a pressing tool and being shaped in a subsequent pressing process.
EP01923546A 2000-01-21 2001-01-18 Method for producing components in the engine compartment of motor vehicles by means of thermoplastic materials Withdrawn EP1255632A1 (en)

Applications Claiming Priority (5)

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DE2000102631 DE10002631A1 (en) 2000-01-21 2000-01-21 Vehicle engine compartment component molding process, particularly for labyrinth plates in automatic transmissions, involves placing plasticized thermoplastic polymer in a mold and pressing
DE2000102633 DE10002633A1 (en) 2000-01-21 2000-01-21 Vehicle engine compartment component molding process, particularly for labyrinth plates in automatic transmissions, involves placing plasticized thermoplastic polymer in a mold and pressing
DE10002633 2000-01-21
DE10002631 2000-01-21
PCT/EP2001/000524 WO2001053055A2 (en) 2000-01-21 2001-01-18 Method for producing engine components using thermoplastic materials

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EP1255632A1 true EP1255632A1 (en) 2002-11-13

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US3947539A (en) * 1972-07-10 1976-03-30 The Dow Chemical Company Method for cold forming plastic article
JPS5981123A (en) * 1982-11-01 1984-05-10 Toyota Motor Corp Method and apparatus for supplying plastic resin material to compression molding force
JPS6119317A (en) * 1984-07-05 1986-01-28 Honda Motor Co Ltd Manufacture of suction pipe for internal-combustion engine
DE19608011A1 (en) * 1996-03-04 1997-09-11 Hoechst Ag Salts of 1-hydroxy-dihydrophospholoxides and 1-hydroxy-phospholanoxides and their use as flame retardants
DE19613979A1 (en) * 1996-04-09 1997-10-16 Hoechst Ag Mixtures of thermoplastics and oxidized polyarylene sulfides
DE19820123A1 (en) * 1998-05-06 1999-11-11 Ticona Gmbh Polyester molding materials useful for the production of injection molded articles

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