DE102016208149B4 - Method for connecting two components - Google Patents
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- DE102016208149B4 DE102016208149B4 DE102016208149.7A DE102016208149A DE102016208149B4 DE 102016208149 B4 DE102016208149 B4 DE 102016208149B4 DE 102016208149 A DE102016208149 A DE 102016208149A DE 102016208149 B4 DE102016208149 B4 DE 102016208149B4
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
- B29C65/7802—Positioning the parts to be joined, e.g. aligning, indexing or centring
- B29C65/782—Positioning the parts to be joined, e.g. aligning, indexing or centring by setting the gap between the parts to be joined
- B29C65/7823—Positioning the parts to be joined, e.g. aligning, indexing or centring by setting the gap between the parts to be joined by using distance pieces, i.e. by using spacers positioned between the parts to be joined and forming a part of the joint
- B29C65/7826—Positioning the parts to be joined, e.g. aligning, indexing or centring by setting the gap between the parts to be joined by using distance pieces, i.e. by using spacers positioned between the parts to be joined and forming a part of the joint said distance pieces being non-integral with the parts to be joined, e.g. particles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- 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
- B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- 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
- B29C66/7212—Fibre-reinforced materials characterised by the composition of the fibres
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- 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
- B29C66/74—Joining plastics material to non-plastics material
- B29C66/742—Joining plastics material to non-plastics material to metals or their alloys
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D29/00—Superstructures, understructures, or sub-units thereof, characterised by the material thereof
- B62D29/001—Superstructures, understructures, or sub-units thereof, characterised by the material thereof characterised by combining metal and synthetic material
- B62D29/002—Superstructures, understructures, or sub-units thereof, characterised by the material thereof characterised by combining metal and synthetic material a foamable synthetic material or metal being added in situ
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
- B29C44/12—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
- B29C44/1228—Joining preformed parts by the expanding material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
- B29C44/12—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
- B29C44/129—Enhancing adhesion to the preformed part using an interlayer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/3484—Stopping the foaming reaction until the material is heated or re-heated
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2705/00—Use of metals, their alloys or their compounds, for preformed parts, e.g. for inserts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
- B29K2995/0003—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular electrical or magnetic properties, e.g. piezoelectric
- B29K2995/0007—Insulating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
- B29K2995/0037—Other properties
- B29K2995/0094—Geometrical properties
- B29K2995/0097—Thickness
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
- B29L2031/3005—Body finishings
- B29L2031/3011—Roof linings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
- B62D25/06—Fixed roofs
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Body Structure For Vehicles (AREA)
Abstract
Verfahren zum Verbinden zweier Bauteile (1, 3) mit folgenden Schritten:- Bereitstellen eines ersten Bauteils (1), an das eine unexpandierte Schaumschicht (2), welche ein Treibmittel enthält, angeschäumt ist,- Bereitstellen eines zweiten Bauteils (3),- Positionieren des ersten Bauteils (1) relativ zu dem zweiten Bauteil (3), derart, dass zwischen einer der Schaumschicht zugewandten Seite (3a) des zweiten Bauteils (3) und der unexpandierten Schaumschicht (2) ein Spalt (5) verbleibt, wobei die beiden Bauteile (1, 3) mittels eines Abstandshalteelements (4) in einem Abstand zueinander gehalten werden,- Aufschäumen der unexpandierten Schaumschicht (2), wodurch Schaum an das zweite Bauteil (3) gelangt und mit diesem verklebt, dadurch gekennzeichnet, dass in der unexpandierten Schaumschicht eine Ausnehmung (2a) erzeugt wird, in die das Abstandshalteelement (4) eingedrückt wird, wodurch die beiden Bauteile (1, 3) vor dem Aufschäumen formschlüssig relativ zueinander vorpositioniert werden.Method for connecting two components (1, 3) with the following steps: - providing a first component (1) to which an unexpanded foam layer (2) containing a blowing agent is foamed, - providing a second component (3), Positioning the first component (1) relative to the second component (3) such that a gap (5) remains between a side (3a) of the second component (3) facing the foam layer and the unexpanded foam layer (2), the the two components (1, 3) are kept at a distance from one another by means of a spacer element (4), - foaming of the unexpanded foam layer (2), as a result of which foam reaches and adheres to the second component (3), characterized in that in the unexpanded foam layer, a recess (2a) is produced into which the spacer element (4) is pressed, as a result of which the two components (1, 3) are positively pre-positioned relative to one another before foaming.
Description
Die vorliegende Erfindung betrifft ein Verfahren zum Verbinden zweier Bauteile gemäß dem Oberbegriff des Patentanspruches 1.The present invention relates to a method for connecting two components according to the preamble of
Ein derartiges Verfahren ist aus der
Strukturkomponenten von Fahrzeugkarosserien, wie z. B. der Dachholm einer Fahrzeugkarosserie, sind als Hohlteile ausgeführt, die aus mehreren Blechteilen zusammengesetzt sind. Zur Versteifung derartiger Hohlteile können in ihrem Inneren Versteifungselemente angeordnet sein. Das „Außenteil“ eines solchen Dachholms kann z. B. aus Stahlblech bestehen und das Versteifungsteil kann z. B. aus einem faserverstärkten, z.B. einem kohlefaserverstärkten Kunststoffmaterial bestehen. Kohlefaserverstärkte Kunststoffteile sind elektrisch leitend. Im Fall einer Potentialdifferenz zwischen dem Außenteil und dem Innenteil eines solchen Dachholms ist bereits bei der Fertigung auf entsprechende Korrosionsschutzmaßnahmen zu achten.Structural components of vehicle bodies, such as. B. the roof spar of a vehicle body, are designed as hollow parts which are composed of several sheet metal parts. To stiffen such hollow parts, stiffening elements can be arranged in their interior. The "outer part" of such a roof spar can, for. B. consist of sheet steel and the stiffening part can, for. B. from a fiber reinforced, e.g. a carbon fiber reinforced plastic material. Carbon fiber reinforced plastic parts are electrically conductive. In the event of a potential difference between the outer part and the inner part of such a roof spar, appropriate corrosion protection measures must be taken during manufacture.
Aufgabe der Erfindung ist es, ein Verfahren zum Verbinden zweier Bauteile anzugeben, das im Falle einer Potentialdifferenz zwischen den beiden Bauteilen eine hohe Korrosionssicherheit bietet.The object of the invention is to provide a method for connecting two components which offers a high level of corrosion protection in the event of a potential difference between the two components.
Diese Aufgabe wird durch die Merkmale des Patentanspruches 1 gelöst. Vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung sind den Unteransprüchen zu entnehmen.This object is solved by the features of
Ausgangspunkt der Erfindung ist ein Verfahren zum Verbinden zweier Bauteile nämliches eines ersten Bauteils und eines zweiten Bauteils. Das erste Bauteil ist ein Bauteil, an das ein unexpandierter Kunststoffschaum, welcher ein Treibmittel enthält, angeschäumt ist. „Anschäumen“ bedeutet in diesem Zusammenhang, dass der unexpandierte Schaum klebend mit dem ersten Bauteil verbunden ist.The starting point of the invention is a method for connecting two components, namely a first component and a second component. The first component is a component to which an unexpanded plastic foam containing a blowing agent is foamed. In this context, “foaming” means that the unexpanded foam is bonded to the first component.
Unter einem „unexpandierten Schaum“ versteht man einen Kunststoffschaum, der ein Treibmittel enthält. Durch Aktivieren des Treibmittels kann der Schaum aufgeschäumt werden. Bei dem Treibmittel kann es sich beispielsweise um Kohlendioxid handeln. Beim Aufschäumen wird das im unexpandierten Zustand des Schaums gebundene Kohlendioxid gasförmig und bewirkt dadurch ein Aufschäumen.An “unexpanded foam” is a plastic foam that contains a blowing agent. The foam can be foamed by activating the blowing agent. The blowing agent can be, for example, carbon dioxide. When foaming, the carbon dioxide bound in the unexpanded state of the foam becomes gaseous, causing foaming.
Die beiden o.g. Bauteile werden zunächst relativ zueinander positioniert und zwar derart, dass zwischen eine dem Schaum zugewandte Seite des zweiten Bauteils und dem unexpandierten Schaum ein Abstand bzw. ein Spalt verbleibt, wobei die beiden Bauteile mittels eines Abstandshalteelements in einem Abstand voneinander gehalten werden. Dadurch wird sichergestellt, dass die beiden Bauteile einander nicht berühren, d. h. dass die beiden Bauteile nicht unmittelbar, insbesondere nicht elektrisch leitend, miteinander verbunden sind.The two above Components are initially positioned relative to one another in such a way that a distance or a gap remains between a side of the second component facing the foam and the unexpanded foam, the two components being kept at a distance from one another by means of a spacing element. This ensures that the two components do not touch each other, i. H. that the two components are not directly, in particular not electrically conductive, connected to one another.
Anschließend wird der unexpandierte Schaum durch Aktivieren des Treibmittels aufgeschäumt. Durch das Aufschäumen gelangt der Schaum an das zweite Bauteil und verklebt mit dem zweiten Bauteil. Die beiden Bauteile werden also durch den Schaum miteinander verbunden. Da der Schaum luftdicht ist, und er den ursprünglich vorhandenen Spalt zwischen den beiden Bauteilen vollständig ausfüllt, verhindert der Schaum ein Eindringen von Luft bzw. Luftfeuchtigkeit zwischen die Bauteile und somit eine Korrosion der Bauteile.The unexpanded foam is then foamed by activating the blowing agent. As a result of the foaming, the foam reaches the second component and sticks to the second component. The two components are therefore connected to each other by the foam. Since the foam is airtight, and it completely fills the originally existing gap between the two components, the foam prevents air or air humidity from entering between the components and thus corrosion of the components.
Nach einer Weiterbildung der Erfindung ist vorgesehen, dass das Abstandshalteelement vor dem Aufschäumen des unexpandierten Schaums ein Stück weit in den unexpandierten Schaum hineinragt. Wenn das Abstandshalteelement mit dem zweiten Bauteil verbunden ist, wird dadurch eine gewisse „Vorfixierung“ der beiden Bauteile relativ zueinander erreicht. Anders ausgedrückt, wird durch das ein Stück weit in den unexpandierten Schaum hineinragende Abstandshalteelement ein gewisser Formschluss erreicht und ein unbeabsichtigtes Verrutschen der beiden Bauteile vor ihrem Verkleben durch den Schaum verhindert.According to a development of the invention, it is provided that the spacer element protrudes a bit into the unexpanded foam before the unexpanded foam is foamed. If the spacer element is connected to the second component, a certain “pre-fixing” of the two components is achieved relative to one another. In other words, the spacer element protruding a bit into the unexpanded foam achieves a certain form fit and prevents the two components from slipping unintentionally before they are glued together by the foam.
Während des Aufschäumens des unexpandierten Schaums ist dieser zähflüssig. Sofern das erste Bauteil mit seinem Schaum auf dem Abstandshalteelement aufliegt, kann es während des Aufschäumens aufgrund der auf das erste Bauteil wirkenden Schwerkraft zu einer gewissen Verschiebung des ersten Bauteils in Bezug auf das zweite Bauteil kommen, d. h. die beiden Bauteile können sich während des Aufschäumens aufgrund der Wirkung der Schwerkraft ein Stück weit aufeinander zubewegen, soweit, bis sie jeweils das Abstandshalteelement unmittelbar berühren.While the unexpanded foam is foaming, it is viscous. If the first component rests with its foam on the spacer element, a certain displacement of the first component with respect to the second component can occur during foaming due to the gravity acting on the first component, i. H. the two components can move a little towards each other during the foaming due to the effect of gravity until they each directly touch the spacer element.
Nach dem Aufschäumen des Schaums ist das Abstandshalteelement vollständig von dem Schaum umgeben und vor einem Zudringen von Umgebungsluft bzw. Luftfeuchtigkeit geschützt, wodurch eine hohe Sicherheit gegen Korrosion erreicht wird.After the foaming of the foam, the spacer element is completely surrounded by the foam and is protected against the ingress of ambient air or air humidity, whereby a high level of security against corrosion is achieved.
Gemäß der Erfindung kann vorgesehen sein, dass der vor dem Aufschäumen zwischen dem zweiten Bauteil und dem Schaum des ersten Bauteils bestehende Spalt in einen Bereich zwischen 0,5mm und 3mm oder im Bereich zwischen 1mm und 2,5mm oder im Bereich zwischen 1,5mm und 2,5mm liegt.According to the invention it can be provided that the gap existing before the foaming between the second component and the foam of the first component in a range between 0.5mm and 3mm or in the range between 1mm and 2.5mm or in the range between 1.5mm and 2.5mm.
Um zu vermeiden, dass zwischen den beiden Bauteilen eine elektrische Spannungsreihe entsteht, wird vorzugsweise ein elektrisch nichtleitender Schaum bzw. ein elektrisch isolierender Schaum verwendet. In order to avoid an electrical voltage series occurring between the two components, an electrically non-conductive foam or an electrically insulating foam is preferably used.
Sofern es sich bei den Bauteilen um Bauteile einer herzustellenden Fahrzeugkarosserie handelt, kann es erforderlich sein, dass die beiden Bauteile bzw. zumindest das zweite Bauteil mit einer Beschichtung bzw. einer Lackierung versehen wird. Hierzu kann vor dem Aufschäumen des unexpandierten Schaums eine Beschichtungsflüssigkeit in den Spalt eingebracht werden, wodurch zumindest auf die dem Schaum zugewandte Seite des zweiten Bauteils Beschichtungsflüssigkeit aufgebracht wird. Insbesondere kann vorgesehen sein, dass die beiden Bauteile vor dem Aufschäumen des unexpandierten Schaums in ein Beschichtungsbad eingetaucht werden. Das Aufbringen der Beschichtung kann insbesondere im Wege einer Kathodentauchlackierung erfolgen, was ein besonders gleichmäßiges Aufbringen der Beschichtung ermöglicht.If the components are components of a vehicle body to be produced, it may be necessary for the two components or at least the second component to be provided with a coating or a coating. For this purpose, a coating liquid can be introduced into the gap before the unexpanded foam is foamed, whereby coating liquid is applied at least to the side of the second component facing the foam. In particular, it can be provided that the two components are immersed in a coating bath before the unexpanded foam is foamed. The coating can be applied in particular by means of a cathode dip coating, which enables the coating to be applied particularly uniformly.
Nach dem Aufbringen der Beschichtung wird diese getrocknet. Das Trocknen kann z. B. in einem Trocknungsofen bzw. einer Trockenkammer erfolgen. Nach dem Trocknen der Beschichtung kann dann das Aufschäumen des unexpandierten Schaums durchgeführt werden.After the coating has been applied, it is dried. Drying can e.g. B. in a drying oven or a drying chamber. After the coating has dried, the unexpanded foam can then be foamed.
Das in dem unexpandierten Schaum enthaltene bzw. chemisch gebundene Treibmittel, bei dem es sich beispielsweise um Kohlendioxid handeln kann, kann durch Aufheizen des unexpandierten Schaums auf eine Temperatur, die oberhalb einer vorgegebenen „Aktivierungstemperatur“ liegt, initiiert werden („Aktivieren des Treibmittels“). Beispielsweise kann vorgesehen sein, dass die Aktivierungstemperatur bei circa 150° Celsius liegt und dass der unexpandierte Schaum entsprechend auf eine Temperatur von mehr als 150° Celsius aufgeheizt wird, wodurch das im unexpandierten Schaum enthaltene Treibmittel in einen gasförmigen Zustand übergeht und den Schaum expandiert.The blowing agent contained or chemically bound in the unexpanded foam, which can be, for example, carbon dioxide, can be initiated by heating the unexpanded foam to a temperature which is above a predetermined “activation temperature” (“activating the blowing agent”). , For example, it can be provided that the activation temperature is approximately 150 ° Celsius and that the unexpanded foam is accordingly heated to a temperature of more than 150 ° Celsius, as a result of which the blowing agent contained in the unexpanded foam changes into a gaseous state and the foam expands.
Das oben erwähnte Abstandshalteelement kann an einem der beiden Bauteile, z. B. an dem zweiten Bauteil, fixiert sein. Beispielsweise kann vorgesehen sein, dass vor dem Positionieren der beiden Bauteile in einem der beiden Bauteile ein Durchgangsloch hergestellt wird, in das ein als Abstandshalteelement fungierendes Clipelement eingeclipst wird, wobei das Clipelement auf der dem Schaum zugewandten Seite des zweiten Bauteils von dem zweiten Bauteil absteht.The above-mentioned spacer element can on one of the two components, for. B. on the second component. For example, provision can be made for a through hole to be made in one of the two components before positioning the two components, into which a clip element functioning as a spacing element is clipped, the clip element projecting from the second component on the side of the second component facing the foam.
Alternativ dazu kann vorgesehen sein, dass vor dem Positionieren der beiden Bauteile auf eines der beiden Bauteile, z. B. auf das zweite Bauteil, ein als Abstandshalteelement fungierendes Element aufgeschweißt, aufgeklebt oder in anderer Weise auf dem betreffenden Bauteil befestigt wird. Das als Abstandshalteelement verwendete Element kann beispielsweise durch eine Kugel oder durch mehrere Kugeln gebildet sein oder eine Kugel oder mehrere Kugeln aufweisen.Alternatively, it can be provided that before positioning the two components on one of the two components, for. B. on the second component, a functioning as a spacer element welded, glued or attached in some other way on the component in question. The element used as a spacing element can be formed, for example, by a ball or by a plurality of balls, or can have a ball or a plurality of balls.
Das Anschäumen der unexpandierten Schaumschicht an das erste Bauteil kann beispielsweise in einem Spritzgusswerkzeug erfolgen. Erfindungsgemäß wird in der unexpandierten Schaumschicht eine Ausnehmung hergestellt, in die dann das Abstandshalteelement eingeführt werden kann. Beispielsweise kann beim Anschäumen der unexpandierten Schaumschicht an das erste Bauteil eine kugelkalottenförmige Ausnehmung hergestellt werden, in die dann eine Kugel des Abstandshalteelements eingedrückt werden kann. Dadurch wird zwischen dem Abstandshalteelement und der unexpandierten Schaumschicht des ersten Bauteils ein gewisser Formschluss erzeugt, der die beiden Bauteile bereits vor dem Aufschäumen der unexpandierten Schaumschicht, d.h. bereits vor dem Aktivieren der Schaumschicht, relativ zueinander vorfixiert und ein unbeabsichtigtes Verrutschen der beiden Bauteile verhindert.The unexpanded foam layer can be foamed onto the first component, for example in an injection molding tool. According to the invention, a recess is made in the unexpanded foam layer, into which the spacer element can then be inserted. For example, when the unexpanded foam layer is foamed onto the first component, a spherical cap-shaped recess can be produced, into which a ball of the spacing element can then be pressed. As a result, a certain positive fit is generated between the spacer element and the unexpanded foam layer of the first component, which already locks the two components before the unexpanded foam layer is foamed, i.e. even before activating the foam layer, pre-fixed relative to each other and preventing the two components from slipping unintentionally.
Im Folgenden wird die Erfindung im Zusammenhang mit der Zeichnung näher erläutert. Es zeigen:
-
1 einen Zustand der beiden Bauteile vor dem Aufschäumen der unexpandierten Schaumschicht; und -
2 einen Dachholm eines Fahrzeugs als mögliches Anwendungsbeispiel des erfindungsgemäßen Verfahrens.
-
1 a state of the two components before foaming of the unexpanded foam layer; and -
2 a roof spar of a vehicle as a possible application example of the method according to the invention.
In dem ersten Bauteil
Nach dem Herstellen der beiden Bauteile
Wie aus
Durch Eintauchen der relativ zueinander vorpositionierten Bauteile
Hierzu muss das in dem unexpandierten Schaum
Dabei kommt es zu einem Verkleben der dem Schaum
In dem in
Nach einem Trocknen der Beschichtung wird die unexpandierte Schaumschicht
Claims (15)
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DE19858903A1 (en) * | 1998-12-19 | 2000-06-21 | Opel Adam Ag | Reinforcing element, especially for hollow support member of body of motor vehicle, comprises tubular support to which is connected expandable mass which retains support in hollow member of body |
US20030194548A1 (en) * | 2002-04-15 | 2003-10-16 | Mcleod David G. | Vehicular structural members and method of making the members |
DE60204736T2 (en) * | 2001-07-02 | 2006-02-02 | Hutchinson | Sound insulation device for installation in a tubular part, in particular a vehicle body part |
DE60118816T2 (en) * | 2000-01-31 | 2007-04-12 | Sika Corp., Madison Heights | Reinforcement element with thermally expanding foam and directional support |
DE102012005507A1 (en) * | 2012-03-17 | 2012-11-15 | Daimler Ag | Shell construction group for motor car, has body parts provided with flange regions, and connectors partially arranged in flange regions, where body parts are firmly interconnected with adhesive bond, and connectors have base bodies |
DE102012217959A1 (en) * | 2012-10-01 | 2014-04-17 | Ford-Werke Gmbh | Method for producing rebate seam between inner metal sheet and outer metal sheet of e.g. door, of motor vehicle, involves heating region of seam, and applying coating in region of seam that is attached to internal and external components |
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2016
- 2016-05-12 DE DE102016208149.7A patent/DE102016208149B4/en not_active Expired - Fee Related
Patent Citations (6)
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DE19858903A1 (en) * | 1998-12-19 | 2000-06-21 | Opel Adam Ag | Reinforcing element, especially for hollow support member of body of motor vehicle, comprises tubular support to which is connected expandable mass which retains support in hollow member of body |
DE60118816T2 (en) * | 2000-01-31 | 2007-04-12 | Sika Corp., Madison Heights | Reinforcement element with thermally expanding foam and directional support |
DE60204736T2 (en) * | 2001-07-02 | 2006-02-02 | Hutchinson | Sound insulation device for installation in a tubular part, in particular a vehicle body part |
US20030194548A1 (en) * | 2002-04-15 | 2003-10-16 | Mcleod David G. | Vehicular structural members and method of making the members |
DE102012005507A1 (en) * | 2012-03-17 | 2012-11-15 | Daimler Ag | Shell construction group for motor car, has body parts provided with flange regions, and connectors partially arranged in flange regions, where body parts are firmly interconnected with adhesive bond, and connectors have base bodies |
DE102012217959A1 (en) * | 2012-10-01 | 2014-04-17 | Ford-Werke Gmbh | Method for producing rebate seam between inner metal sheet and outer metal sheet of e.g. door, of motor vehicle, involves heating region of seam, and applying coating in region of seam that is attached to internal and external components |
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