DE102019216941B4 - Process for the integral connection of a rubber bearing with a fiber-reinforced component - Google Patents

Process for the integral connection of a rubber bearing with a fiber-reinforced component Download PDF

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Publication number
DE102019216941B4
DE102019216941B4 DE102019216941.4A DE102019216941A DE102019216941B4 DE 102019216941 B4 DE102019216941 B4 DE 102019216941B4 DE 102019216941 A DE102019216941 A DE 102019216941A DE 102019216941 B4 DE102019216941 B4 DE 102019216941B4
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Germany
Prior art keywords
rubber
semi
finished product
component
heat treatment
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DE102019216941.4A
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German (de)
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DE102019216941A1 (en
Inventor
Marcel PLEYER
Frank Nachbar
Stephan Schulte
Remt Blankenspeck
Sebastian Schlotter
Florian Kramer
Melanie Braun
Gerrit Brauer
Jan-Hendrik Wiegmann
Arnold Gurr
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ZF Friedrichshafen AG
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ZF Friedrichshafen AG
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F1/00—Springs
    • F16F1/36—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
    • F16F1/366—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers made of fibre-reinforced plastics, i.e. characterised by their special construction from such materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/532—Joining single elements to the wall of tubular articles, hollow articles or bars
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/532—Joining single elements to the wall of tubular articles, hollow articles or bars
    • B29C66/5324—Joining single elements to the wall of tubular articles, hollow articles or bars said single elements being substantially annular, i.e. of finite length
    • B29C66/53241—Joining single elements to the wall of tubular articles, hollow articles or bars said single elements being substantially annular, i.e. of finite length said articles being tubular and said substantially annular single elements being of finite length relative to the infinite length of said tubular articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/721—Fibre-reinforced materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/737—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined
    • B29C66/7375—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined uncured, partially cured or fully cured
    • B29C66/73751—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined uncured, partially cured or fully cured the to-be-joined area of at least one of the parts to be joined being uncured, i.e. non cross-linked, non vulcanized
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/737—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined
    • B29C66/7375—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined uncured, partially cured or fully cured
    • B29C66/73753—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined uncured, partially cured or fully cured the to-be-joined area of at least one of the parts to be joined being partially cured, i.e. partially cross-linked, partially vulcanized
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7394—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoset
    • B29C66/73941—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoset characterised by the materials of both parts being thermosets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G21/00—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces
    • B60G21/02—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected
    • B60G21/04—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected mechanically
    • B60G21/05—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected mechanically between wheels on the same axle but on different sides of the vehicle, i.e. the left and right wheel suspensions being interconnected
    • B60G21/055—Stabiliser bars
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F1/00—Springs
    • F16F1/36—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
    • F16F1/373—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers characterised by having a particular shape
    • F16F1/377—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers characterised by having a particular shape having holes or openings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/737—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined
    • B29C66/7375—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined uncured, partially cured or fully cured
    • B29C66/73755—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined uncured, partially cured or fully cured the to-be-joined area of at least one of the parts to be joined being fully cured, i.e. fully cross-linked, fully vulcanized
    • B29C66/73756—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined uncured, partially cured or fully cured the to-be-joined area of at least one of the parts to be joined being fully cured, i.e. fully cross-linked, fully vulcanized the to-be-joined areas of both parts to be joined being fully cured
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
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    • B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
    • B60G2204/10—Mounting of suspension elements
    • B60G2204/12—Mounting of springs or dampers
    • B60G2204/122—Mounting of torsion springs
    • B60G2204/1222—Middle mounts of stabiliser on vehicle body or chassis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
    • B60G2204/40—Auxiliary suspension parts; Adjustment of suspensions
    • B60G2204/41—Elastic mounts, e.g. bushings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
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    • F16F2226/00—Manufacturing; Treatments
    • F16F2226/04—Assembly or fixing methods; methods to form or fashion parts

Abstract

Verfahren zur stoffschlüssigen Verbindung eines Gummilagers (3, 3') mit einem faserverstärkten Bauteil (1), das mittels einer Wärmebehandlung aus einem Halbzeug gefertigt wird, dadurch gekennzeichnet, dass das Gummilager (3, 3') an dem Halbzeug montiert wird, bevor die Wärmebehandlung des Halbzeugs abgeschlossen ist, so dass sich während der Wärmebehandlung eine stoffschlüssige Verbindung zwischen dem Gummilager (3, 3') und dem Bauteil (1) ergibt, wobei das Halbzeug, auf dem das Gummilager (3, 3') montiert wird, als trockener Vorformling ausgebildet ist.Method for the integral connection of a rubber mount (3, 3') to a fiber-reinforced component (1), which is manufactured from a semi-finished product by means of heat treatment, characterized in that the rubber mount (3, 3') is mounted on the semi-finished product before the Heat treatment of the semi-finished product is completed, so that during the heat treatment there is a material connection between the rubber mount (3, 3') and the component (1), with the semi-finished product on which the rubber mount (3, 3') is mounted as a dry preform is formed.

Description

Die vorliegende Erfindung betrifft ein Verfahren zur stoffschlüssigen Verbindung eines Gummilagers mit einem faserverstärkten Bauteil, das mittels einer Wärmebehandlung aus einem Halbzeug gefertigt wird.The present invention relates to a method for the integral connection of a rubber mount to a fiber-reinforced component that is manufactured from a semi-finished product by means of heat treatment.

Ein derartiges Verfahren ist aus der DE 10 2012 020 184 A1 bekannt. Hiernach wird das Gummilager an ein vorimprägniertes faserverstärktes Bauteil angespritzt.Such a method is from DE 10 2012 020 184 A1 known. The rubber mount is then injection molded onto a pre-impregnated, fiber-reinforced component.

Aus der EP 2 243 620 A2 ist ein Verfahren zum Verbinden eines Gummilagers an einem Stabilisator aus Metall bekannt, bei dem ein vorvulkanisiertes Gummielement auf das mit einem Haftvermittler behandelte Metallteil montiert wird und anschließend durch Erhitzen das Gummilager mit dem Metallteil verbunden wird.From the EP 2 243 620 A2 a method for connecting a rubber mount to a metal stabilizer is known, in which a pre-vulcanized rubber element is mounted on the metal part treated with an adhesion promoter and then the rubber mount is connected to the metal part by heating.

Weiterer relevanter Stand der Technik ist der DE 10 2005 023 320 A1 zu entnehmen.Another relevant prior art is DE 10 2005 023 320 A1 refer to.

Aus dem Stand der Technik sind Faser-Kunststoff-Verbunde bekannt, die im ausgehärteten Zustand aus Verstärkungsfasern und einer Kunststoffmatrix bestehen. Zur Herstellung von Bauteilen aus einem solchen Faser-Kunststoff-Verbund werden die Fasern, die zum Beispiel in Form eines Geflechts vorliegen, in eine Kavität eines Werkzeugs gelegt, die die Form des späteren Bauteils aufweist. Innerhalb der Kavität werden die Fasern mit einem Kunststoff getränkt. Das hiernach vorliegende Halbzeug wird einer Wärmebehandlung ggf. unter einer Druckbeaufschlagung innerhalb einer Presse unterzogen und hierbei gehärtet. Der Druck und die Temperatur innerhalb der Presse hängen von den gewählten Materialien der Faser und des Kunststoffs ab.Fiber-plastic composites are known from the prior art, which consist of reinforcing fibers and a plastic matrix in the cured state. To produce components from such a fiber-plastic composite, the fibers, which are present, for example, in the form of a mesh, are placed in a cavity of a tool that has the shape of the future component. Inside the cavity, the fibers are impregnated with a plastic. The semi-finished product obtained hereafter is subjected to a heat treatment, if necessary under pressure, within a press and hardened in the process. The pressure and temperature inside the press depend on the chosen materials of fiber and plastic.

Aufgrund der hohen Festigkeit von Bauteilen aus Faser-Kunststoff-Verbunden und deren vergleichsweise geringes spezifisches Gewicht werden solche Bauteile zunehmend auch im Fahrzeugbau eingesetzt. Dabei müssen die Bauteile jedoch mit anderen Komponenten des Fahrzeugs, insbesondere mit der Karosserie verbunden werden, wozu beispielsweise Gummilager aus Kunststoff verwendet werden, die an die faserverstärkten Bauteile montiert werden.Due to the high strength of components made of fiber-plastic composites and their comparatively low specific weight, such components are increasingly being used in vehicle construction. In this case, however, the components have to be connected to other components of the vehicle, in particular to the bodywork, for which purpose, for example, rubber bearings made of plastic are used, which are mounted on the fiber-reinforced components.

DE 10 2010 049 565 A1 offenbart beispielsweise eine Drehstabfeder für ein Kraftfahrzeug und mithin ein gattungsgemäßes Bauteil. Die Drehstabfeder ist ein rohrförmiges Bauteil und besteht aus einem mit Fasern verstärkten Kunststoffmaterial. Etwaige Anbauteile können aus Kunststoff bestehen und werden an das faserverstärkte Kunststoffbauteil angeklebt oder angespritzt oder mit dem faserverstärkten Kunststoffbauteil formschlüssig verbunden. Die nachträgliche Montage des Anbauteils stellt jedoch einen zusätzlichen Aufwand dar, was die Produktionskosten von faserverstärkten Bauteilen mit Anbauteilen in nachteiliger Weise erhöht. DE 10 2010 049 565 A1 discloses, for example, a torsion bar spring for a motor vehicle and thus a generic component. The torsion bar is a tubular component made from a fiber reinforced plastic material. Any add-on parts can be made of plastic and are glued or molded onto the fiber-reinforced plastic component or connected to the fiber-reinforced plastic component in a form-fitting manner. However, the subsequent assembly of the add-on part represents an additional expense, which disadvantageously increases the production costs of fiber-reinforced components with add-on parts.

DE 10 2017 203 537 B3 offenbart demgegenüber ein Verfahren zur Herstellung einer Blattfeder aus einem endlosfaserverstärkten ersten Kunststoffhalbzeug, wobei die Blattfeder von Anbindungskomponenten umgriffen ist. Die Anbindungskomponenten bestehen dabei aus einem zweiten faserverstärktem Kunststoffhalbzeug. In einem Fertigungsschritt werden die Kunststoffhalbzeuge stoffschlüssig miteinander verbunden. Zwar genügt eine stoffschlüssige Verbindung den hohen Anforderungen an Stabilität, allerdings sind Anbindungskomponenten aus faserverstärktem Kunststoff vergleichsweise kostenintensiv und komplex in der Herstellung. DE 10 2017 203 537 B3 discloses a method for producing a leaf spring from a continuous fiber-reinforced first semi-finished plastic product, wherein the leaf spring is surrounded by connection components. The connection components consist of a second fiber-reinforced plastic semi-finished product. In one production step, the semi-finished plastic products are bonded together. Although a bonded connection satisfies the high stability requirements, connection components made of fiber-reinforced plastic are comparatively expensive and complex to manufacture.

Vom bekannten Stand der Technik ausgehend, ist es die Aufgabe der vorliegenden Erfindung, die Herstellkosten von faserverstärkten Bauteilen mit Gummilagern zur Anbindung und die erforderliche Anzahl von Teilen zu reduzieren. Ferner soll eine Verbindung zwischen Gummilager und Bauteil mit ausreichender Stabilität geschaffen werden.Proceeding from the known state of the art, it is the object of the present invention to reduce the production costs of fiber-reinforced components with rubber bearings for connection and the required number of parts. Furthermore, a connection between the rubber mount and the component should be created with sufficient stability.

Diese Aufgabe wird durch das Verfahren nach Anspruch 1 gelöst. Erfindungsgemäß ist vorgesehen, dass das Gummilager an dem Halbzeug montiert wird, bevor die Wärmebehandlung des Halbzeugs abgeschlossen ist, so dass sich während der Wärmebehandlung eine stoffschlüssige Verbindung zwischen Gummilager und Bauteil ergibt. Die stoffschlüssige Verbindung entsteht dabei durch eine Vernetzung und/oder Vulkanisation, bei der sich kovalente Bindungen zwischen der Kunststoffmatrix des Bauteils und dem elastomeren Kunststoff des Gummilagers bilden. Hierdurch ergibt sich nicht nur eine besonders stabile Verbindung zwischen Bauteil und Gummilager, sondern für die Verbindung zwischen Gummilager und Bauteil ist ein separater Montageschritt entbehrlich bzw. ein solcher wird eingespart, denn die Verbindung zwischen Gummilager und Bauteil sowie das Härten des Bauteils erfolgen in einem gemeinsamen Verfahrensschritt.This object is achieved by the method according to claim 1. According to the invention it is provided that the rubber mount is mounted on the semi-finished product before the heat treatment of the semi-finished product is completed, so that during the heat treatment there is an integral connection between the rubber mount and the component. The integral connection is created by crosslinking and/or vulcanization, during which covalent bonds form between the plastic matrix of the component and the elastomeric plastic of the rubber mount. This not only results in a particularly stable connection between the component and the rubber mount, but also eliminates the need for a separate assembly step for the connection between the rubber mount and the component or saves one, because the connection between the rubber mount and the component and the hardening of the component take place in a single step process step.

Bevorzugte Ausführungsformen des erfindungsgemäßen Verfahrens werden nachfolgend und in den Unteransprüchen beschrieben.Preferred embodiments of the method according to the invention are described below and in the dependent claims.

Zur Montage des Gummilagers am Bauteil, das als Halbzeug und mithin in einem nicht endgehärteten Zustand vorliegt, sind im Wesentlichen drei unterschiedliche Ausführungsformen vorgesehen.Essentially three different embodiments are provided for the assembly of the rubber bearing on the component, which is present as a semi-finished product and is therefore not in a final hardened state.

Nach einer ersten erfindungsgemäßen Ausgestaltung des Verfahrens ist vorgesehen, dass das Halbzeug, auf dem das Gummilager montiert wird, als trockener Vorformling ausgebildet ist. Unter einem trocknen Vorformling ist dabei ein Halbzeug des Bauteils zu verstehen, das lediglich in Form der Fasern vorliegt, die noch nicht mit dem Kunststoff getränkt sind. Nachdem das Gummilager am trockenen Vorformling montiert ist, wird der trockene Vorformling mittels eines Injektionsprozesses mit einem Polymer getränkt und anschließend mittels der Wärmebehandlung gehärtet. Während dieser Wärmebehandlung bilden sich kovalente Bindungen zwischen dem Gummilager und dem härtenden Halbzeug, was im ausgehärteten Zustand des Bauteils eine zumindest anteilige oder vollständige stoffschlüssige Verbindung bildet.According to a first embodiment of the method according to the invention, it is provided that the semi-finished product on which the rubber mount is mounted is designed as a dry preform. A dry preform is to be understood as meaning a semi-finished product of the component that is only present in the form of fibers that have not yet been impregnated with the plastic. After the rubber bearing is mounted on the dry preform, the dry preform is impregnated with a polymer by means of an injection process and then hardened by means of the heat treatment. During this heat treatment, covalent bonds form between the rubber bearing and the hardening semi-finished product, which in the hardened state of the component forms an at least partial or complete material connection.

Alternativ ist nach einer nicht erfindungsgemäßen Ausgestaltung vorgesehen, dass das Halbzeug, auf dem das Gummilager montiert wird, als nasser Vorformling ausgebildet ist, der mit einem Polymer getränkt ist und der anschließend mittels der Wärmebehandlung gehärtet wird. Auch hierbei entsteht durch kovalente Bindungen eine anteilige oder vollständige stoffschlüssige Verbindung zwischen Gummilager und ausgehärtetem Bauteil.Alternatively, according to an embodiment not according to the invention, it is provided that the semi-finished product on which the rubber bearing is mounted is designed as a wet preform which is impregnated with a polymer and which is then hardened by means of the heat treatment. Here, too, covalent bonds create a partial or complete material connection between the rubber mount and the hardened component.

Schließlich ist nach einer nicht erfindungsgemäßen Ausgestaltung vorgesehen, dass das Halbzeug, auf dem das Gummilager montiert wird, vorgehärtet ist und nach der Montage des Gummilagers mittels der Wärmebehandlung endgehärtet wird. Das Vorhärten erfolgt dabei innerhalb der Presse. Weil das vorgehärtete Halbzeug bereits seine Form erhalten hat und eine ausreichende Eigenstabilität aufweist, kann die Endhärtung nach der Montage des Gummilagers innerhalb eines separaten Ofens erfolgen. Auch hierbei entstehen während der Wärmebehandlung des noch nicht endgehärteten Halbzeugs eine kovalente Bindungen zwischen dem Gummilager und dem schließlich ausgehärteten Bauteil und mithin eine zumindest anteilige oder vollständige stoffschlüssige Verbindung.Finally, according to an embodiment not according to the invention, it is provided that the semi-finished product on which the rubber mount is mounted is pre-hardened and, after the mounting of the rubber mount, is finally hardened by means of the heat treatment. The pre-hardening takes place inside the press. Because the pre-hardened semi-finished product has already received its shape and has sufficient inherent stability, final hardening can take place in a separate oven after the rubber mount has been installed. Here too, during the heat treatment of the not yet fully cured semi-finished product, a covalent bond is created between the rubber bearing and the finally cured component and consequently an at least partial or complete material connection.

Zur Verbesserung der stoffschlüssigen Verbindung zwischen Gummilager und Bauteil ist nach einer bevorzugten Ausgestaltung der Erfindung vorgesehen, dass das Gummilager, das auf das Halbzeug montiert wird, aus einem Elastomer besteht, das anvulkanisiert oder untervulkanisiert ist. Mithin ist die Vulkanisation des Gummilagers noch nicht vollständig abgeschlossen, so dass die vollständige Vulkanisation während der gemeinsamen Wärmebehandlung des Bauteils und des Gummilagers erfolgt, womit sich eine gute stoffschlüssige Verbindung zwischen Gummilager und Bauteil ergibt. Bevorzugt besteht das Gummilager aus Naturkautschuk, Butadien-Kautschuk, Styrol-Butadien-Kautschuk, Chloropren-Kautschuk, Nitril-Kautschuk, hydriertem Nitril-Kautschuk oder aus Mischungen hiervon. Das Polymer, mit dem der Vorformling getränkt wird, besteht demgegenüber vorzugsweise aus Epoxidharz oder Polyurethanharz.To improve the material connection between the rubber mount and the component, according to a preferred embodiment of the invention, the rubber mount, which is mounted on the semi-finished product, consists of an elastomer that is vulcanized on or undervulcanized. Consequently, the vulcanization of the rubber mount is not yet fully completed, so that the complete vulcanization takes place during the joint heat treatment of the component and the rubber mount, which results in a good material connection between the rubber mount and the component. The rubber bearing preferably consists of natural rubber, butadiene rubber, styrene-butadiene rubber, chloroprene rubber, nitrile rubber, hydrogenated nitrile rubber or mixtures thereof. In contrast, the polymer with which the preform is impregnated preferably consists of epoxy resin or polyurethane resin.

Bei allen Verfahren ist die Temperatur während der Wärmebehandlung im Wesentlichen davon abhängig, in welchem Härtungszustand sich das Halbzeug und/oder das Gummilager bei deren Montage befinden. Insbesondere gilt: Je früher dabei das Gummilager an dem Halbzeug montiert wird, desto geringer ist die Temperatur während der folgenden Wärmebehandlung einzustellen.In all processes, the temperature during the heat treatment essentially depends on the state of hardening of the semi-finished product and/or the rubber mount when they are installed. In particular, the earlier the rubber mount is mounted on the semi-finished product, the lower the temperature to be set during the subsequent heat treatment.

Nach einer besonders bevorzugten Ausgestaltung der Erfindung ist vorgesehen, dass das Bauteil ein Stabilisator ist, der zur Wankstabilisaton eines Kraftfahrzeugs ausgebildet ist.According to a particularly preferred embodiment of the invention, it is provided that the component is a stabilizer which is designed for the roll stabilization of a motor vehicle.

Konkrete Ausführungsformen des erfindungsgemäßen Verfahrens werden nachfolgend mit Bezug auf die Figuren erläutert. Es zeigen:

  • 1 einen Stabilisator mit zwei Gummilagern,
  • 2 eine Querschnittsdarstellung eines Gummilagers und
  • 3, 4 Querschnittsdarstellungen eines Stabilisators mit montiertem Gummilager.
Specific embodiments of the method according to the invention are explained below with reference to the figures. Show it:
  • 1 a stabilizer bar with two rubber mounts,
  • 2 a cross-sectional view of a rubber bearing and
  • 3 , 4 Cross-sectional views of a stabilizer bar with a rubber mount installed.

1 zeigt ein Bauteil 1 in Form eines Stabilisators 2, der zur Wankstabilisation eines Kraftfahrzeugs ausgebildet ist und hierzu über Gummilager 3, 3' mit der Karosserie und der Radaufhängung des Fahrzeugs verbunden wird. Üblicherweise wird das Gummilager 3, 3' mittels eines Bügels an die Karosserie gepresst. Das Fahrzeug und die Anbindung des Stabilisators sind vorliegend nicht dargestellt und grundsätzlich bekannt. Der dargestellte Stabilisator 2 ist als faserverstärktes Bauteil 1 ausgebildet und besteht aus einem Faser-Kunststoff-Verbund, der zumindest anteilig stoffschlüssig mit den Gummilagern 3, 3' verbunden ist. Zur zumindest stoffschlüssigen Verbindungen zwischen Gummilager 3, 3' und Bauteil 1 sind unterschiedliche Verfahren vorgesehen, die sich im Wesentlichen durch den Zeitpunkt unterscheiden, zu dem das Gummilager 3, 3' am Halbzeug, also am nicht endgehärteten Bauteil 1, montiert wird. 1 shows a component 1 in the form of a stabilizer 2, which is designed for the roll stabilization of a motor vehicle and for this purpose is connected to the body and the wheel suspension of the vehicle via rubber mounts 3, 3'. The rubber mount 3, 3' is usually pressed against the body by means of a bracket. The vehicle and the connection of the stabilizer are not shown here and are basically known. The stabilizer 2 shown is designed as a fiber-reinforced component 1 and consists of a fiber-plastic composite which is at least partially bonded to the rubber bearings 3, 3'. Different methods are provided for the at least material connection between the rubber mount 3, 3′ and the component 1, which essentially differ in the point in time at which the rubber mount 3, 3′ is mounted on the semi-finished product, i.e. on the component 1 that has not been fully hardened.

2 zeigt ein Gummilager 3, das über einen Schlitz 4 einseitig geöffnet ist und eine Ausnehmung 5 zur Lagerung am Bauteil 1 aufweist. Zur Montage eines solchen Gummilagers 3 am Stabilisator 2 wird das Gummilager 3 auf den trockenen oder den nassen Vorformling oder das vorgehärtete Halbzeug geschoben, so dass das Gummilager 3 das Halbzeug vollständig umgreift (3). Anschließend erfolgt die stoffschlüssige Verbindung zwischen dem Gummilager 3 und dem Bauteil 1 durch eine geeignet eingestellte Wärmebehandlung innerhalb einer Presse oder eines Ofens. Um zu verhindern, dass sich bei der Montage des Gummilagers 3 am nassen Vorformling das noch nicht ausgehärtete Polymer aufschiebt und das Polymer von Teilen der Oberfläche des Halbzeugs entfernt wird, wird das Gummilager 3 geöffnet (s. 4) und im geöffneten Zustand montiert, was eine geringfügige Beabstandung zur Bauteiloberfläche schafft (Pfeil 6). 2 shows a rubber bearing 3, which is open on one side via a slot 4 and has a recess 5 for mounting on the component 1. To mount such a rubber mount 3 on the stabilizer 2, the rubber mount 3 is pushed onto the dry or wet preform or the pre-hardened semi-finished product, so that the rubber mount 3 completely encompasses the semi-finished product ( 3 ). Subsequently, the integral connection between the rubber bearing 3 and the component 1 takes place through a suitably adjusted heat treatment within a press or an oven. To prevent the assembly of the rubber bearing 3 on the wet If the polymer that has not yet hardened is pushed onto the preform and the polymer is removed from parts of the surface of the semi-finished product, the rubber bearing 3 is opened (see Fig. 4 ) and mounted in the open state, which creates a slight distance from the component surface (arrow 6).

BezugszeichenlisteReference List

11
Bauteilcomponent
22
Stabilisatorstabilizer
3, 3'3, 3'
GummilagerRubber bearing
44
Schlitzslot
55
Ausnehmungrecess
66
PfeilArrow

Claims (6)

Verfahren zur stoffschlüssigen Verbindung eines Gummilagers (3, 3') mit einem faserverstärkten Bauteil (1), das mittels einer Wärmebehandlung aus einem Halbzeug gefertigt wird, dadurch gekennzeichnet, dass das Gummilager (3, 3') an dem Halbzeug montiert wird, bevor die Wärmebehandlung des Halbzeugs abgeschlossen ist, so dass sich während der Wärmebehandlung eine stoffschlüssige Verbindung zwischen dem Gummilager (3, 3') und dem Bauteil (1) ergibt, wobei das Halbzeug, auf dem das Gummilager (3, 3') montiert wird, als trockener Vorformling ausgebildet ist.Method for the integral connection of a rubber mount (3, 3') to a fiber-reinforced component (1), which is manufactured from a semi-finished product by means of heat treatment, characterized in that the rubber mount (3, 3') is mounted on the semi-finished product before the Heat treatment of the semi-finished product is completed, so that during the heat treatment there is a material connection between the rubber mount (3, 3') and the component (1), with the semi-finished product on which the rubber mount (3, 3') is mounted as a dry preform is formed. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass der trockene Vorformling mittels eines Injektionsprozesses mit einem Polymer getränkt und anschließend mittels der Wärmebehandlung gehärtet wird.procedure after claim 1 , characterized in that the dry preform is impregnated with a polymer by means of an injection process and is then hardened by means of the heat treatment. Verfahren nach einem der Ansprüche 1 bis 2, dadurch gekennzeichnet, dass das Gummilager (3, 3'), das auf das Halbzeug montiert wird, aus einem Elastomer besteht, das anvulkanisiert oder untervulkanisiert ist.Procedure according to one of Claims 1 until 2 , characterized in that the rubber bearing (3, 3 '), which is mounted on the semi-finished product, consists of an elastomer which is vulcanized or under-vulcanized. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass das Gummilager (3, 3') aus Naturkautschuk, Butadien-Kautschuk, Styrol-Butadien-Kautschuk, Chloropren-Kautschuk, Nitril-Kautschuk, hydriertem Nitril-Kautschuk oder aus Mischungen hiervon besteht.Procedure according to one of Claims 1 until 3 , characterized in that the rubber bearing (3, 3') consists of natural rubber, butadiene rubber, styrene-butadiene rubber, chloroprene rubber, nitrile rubber, hydrogenated nitrile rubber or mixtures thereof. Verfahren nach einem der Ansprüche 2 bis 4, dadurch gekennzeichnet, dass das Polymer, mit dem der Vorformling getränkt wird, ein Epoxidharz oder eine Polyurethanharz ist.Procedure according to one of claims 2 until 4 , characterized in that the polymer with which the preform is impregnated is an epoxy resin or a polyurethane resin. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass das Bauteil (1) ein Stabilisator (2) ist, der zur Wankstabilisation eines Kraftfahrzeugs ausgebildet ist.Procedure according to one of Claims 1 until 3 , characterized in that the component (1) is a stabilizer (2) which is designed for roll stabilization of a motor vehicle.
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005023320A1 (en) 2005-05-17 2006-11-30 Gummiwerk Kraiburg Gmbh & Co. Kg Composite component of thermosetting resins and elastomers, process for the preparation and use of such a composite part
EP2243620A2 (en) 2009-04-20 2010-10-27 Benteler Automobiltechnik GmbH Method and device for producing a composite component from a metal component and a polymer moulded part
DE102010049565A1 (en) 2010-10-25 2012-04-26 Daimler Ag Torsion rod spring for vehicle, comprises curved and tubular component which forms torsion spring, where tubular component comprises fiber-reinforced plastic material, where tubular component is formed as closed hollow profile
DE102012020184A1 (en) 2012-10-13 2013-03-28 Daimler Ag Rod element e.g. torsion bar spring for motor vehicle e.g. passenger car, has fiber reinforced plastic (FRP) tube whose bending point is non-circular cross-section shaped and provided with adjacent layers
DE102017203537B3 (en) 2017-03-03 2018-07-26 Zf Friedrichshafen Ag Method for producing a leaf spring, and leaf spring and suspension

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005023320A1 (en) 2005-05-17 2006-11-30 Gummiwerk Kraiburg Gmbh & Co. Kg Composite component of thermosetting resins and elastomers, process for the preparation and use of such a composite part
EP2243620A2 (en) 2009-04-20 2010-10-27 Benteler Automobiltechnik GmbH Method and device for producing a composite component from a metal component and a polymer moulded part
DE102010049565A1 (en) 2010-10-25 2012-04-26 Daimler Ag Torsion rod spring for vehicle, comprises curved and tubular component which forms torsion spring, where tubular component comprises fiber-reinforced plastic material, where tubular component is formed as closed hollow profile
DE102012020184A1 (en) 2012-10-13 2013-03-28 Daimler Ag Rod element e.g. torsion bar spring for motor vehicle e.g. passenger car, has fiber reinforced plastic (FRP) tube whose bending point is non-circular cross-section shaped and provided with adjacent layers
DE102017203537B3 (en) 2017-03-03 2018-07-26 Zf Friedrichshafen Ag Method for producing a leaf spring, and leaf spring and suspension

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