DE102016208149A1 - Method for connecting two components - Google Patents
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- DE102016208149A1 DE102016208149A1 DE102016208149.7A DE102016208149A DE102016208149A1 DE 102016208149 A1 DE102016208149 A1 DE 102016208149A1 DE 102016208149 A DE102016208149 A DE 102016208149A DE 102016208149 A1 DE102016208149 A1 DE 102016208149A1
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- component
- foam layer
- components
- unexpanded
- foaming
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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
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.Method for connecting two components (1, 3), comprising the following steps: - providing a first component (1) to which an unexpanded foam layer (2) containing a propellant 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); two components (1, 3) by means of a spacer element (4) are kept at a distance from each other, - foaming the unexpanded foam layer (2), whereby foam reaches the second component (3) and glued to this.
Description
Die vorliegende Erfindung betrifft ein Verfahren zum Verbinden zweier Bauteile gemäß den Merkmalen des Patentanspruches 1.The present invention relates to a method for connecting two components according to the features of
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 the roof spar of a vehicle body, are designed as hollow parts, which are composed of several sheet metal parts. For stiffening such hollow parts may be arranged in their interior stiffening elements. The "outer part" of such a roof rail can, for. B. made of sheet steel and the stiffening part can, for. B. from a fiber reinforced, z. B. a carbon fiber reinforced plastic material. Carbon fiber reinforced plastic parts are electrically conductive. In the case of a potential difference between the outer part and the inner part of such a roof rail, attention must be paid to corresponding corrosion protection measures during production.
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 corrosion resistance in the case 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 of a first component and a second component. The first component is a component to which an unexpanded plastic foam, which contains a blowing agent, is foamed. "Foaming" in this context means that the unexpanded foam is adhesively 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.By "unexpanded foam" is meant a plastic foam containing a propellant. By activating the blowing agent, the foam can be foamed. The propellant may be, for example, carbon dioxide. During foaming, the carbon dioxide bound in the unexpanded state of the foam becomes gaseous and thereby causes 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 o. G. Components are first positioned relative to each other in such a way that between a side facing the foam of the second component and the unexpanded foam remains a gap or a gap, wherein the two components are held by a spacer element at a distance from each other. This ensures that the two components do not touch each other, ie. H. that the two components are not directly, in particular not electrically conductive, connected to each other.
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.Subsequently, the unexpanded foam is foamed by activating the propellant. As a result of the foaming, the foam reaches the second component and adheres to the second component. The two components are thus joined together by the foam. Since the foam is airtight, and it completely fills the gap between the two components originally present, the foam prevents ingress of air or humidity 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 little way into the unexpanded foam before foaming the unexpanded foam. If the spacer element is connected to the second component, a certain "prefixing" of the two components relative to one another is thereby achieved. In other words, the spacer element protruding a little way into the unexpanded foam achieves a certain degree of positive locking and prevents unintentional slipping of the two components before they are adhesively bonded 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.During the foaming of the unexpanded foam, this is viscous. If the first component rests with its foam on the spacer element, during the foaming, due to the gravitational force acting on the first component, a certain displacement of the first component relative to the second component may occur, i. H. the two components may move towards each other during the foaming due to the effect of gravity, so far, until they each touch the spacer element directly.
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 protected from the ingress of ambient air or humidity, whereby a high degree of protection 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 0,5 mm und 3 mm oder im Bereich zwischen 1 mm und 2,5 mm oder im Bereich zwischen 1,5 mm und 2,5 mm liegt.According to the invention, it may be provided that the gap existing between the second component and the foam of the first component before foaming is in a range between 0.5 mm and 3 mm or in the range between 1 mm and 2.5 mm or in the range between 1.5 mm and 2.5 mm.
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 that an electrical voltage series arises between the two components, preferably an electrically non-conductive Foam or an electrically insulating foam 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, before the foaming of the unexpanded foam, a coating liquid can be introduced into the gap, 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 prior to foaming the unexpanded foam. The application of the coating can be carried out in particular by means of a cathode dip coating, which allows a particularly uniform application of the coating.
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 application of the coating, this is dried. The drying can z. B. done in a drying oven or a drying chamber. After drying the coating, the foaming of the unexpanded foam can then be carried out.
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 propellant contained in the unexpanded foam, which may, for example, be carbon dioxide, may be initiated by heating the unexpanded foam to a temperature which is above a predetermined "activation temperature" ("activating the propellant"). , For example, it can be provided that the activation temperature is about 150 ° Celsius and that the unexpanded foam is heated accordingly to a temperature of more than 150 ° Celsius, whereby the blowing agent contained in the unexpanded foam passes into a gaseous state and expands the foam.
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 to be fixed. For example, it can be provided that before the positioning of the two components in one of the two components, a through hole is made, in which a spacer element acting as a clip element is clipped, wherein the clip member protrudes on the side facing the foam of the second component of the second component.
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 member acting as a spacer element welded, glued or otherwise secured on the component in question. The element used as a spacer element may for example be formed by a ball or by a plurality of balls or have a ball or more balls.
Das Anschäumen der unexpandierten Schaumschicht an das erste Bauteil kann beispielsweise in einem Spritzgusswerkzeug erfolgen. Vorzugsweise 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 foaming of the unexpanded foam layer to the first component can be done for example in an injection molding tool. Preferably, a recess is made in the unexpanded foam layer, into which then the spacer element can be inserted. For example, during foaming of the unexpanded foam layer to the first component, a spherical cap-shaped recess can be made, in which then a ball of the spacer element can be pressed. As a result, a certain positive connection is created between the spacer element and the unexpanded foam layer of the first component, which prevents the two components from foaming before the unexpanded foam layer, ie. H. already pre-fixed relative to one another before activating the foam layer and prevents unintentional slipping of the two components.
Im Folgenden wird die Erfindung im Zusammenhang mit der Zeichnung näher erläutert. Es zeigen:In the following the invention will be explained in connection with the drawing. Show it:
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 (16)
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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 |
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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