Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • B62D—MOTOR VEHICLES; TRAILERS
  • B62D27/00—Connections between superstructure or understructure sub-units
  • B62D27/02—Connections between superstructure or understructure sub-units rigid
  • B62D27/026—Connections by glue bonding
• • 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
  • B62D29/008—Superstructures, understructures, or sub-units thereof, characterised by the material thereof predominantly of light alloys, e.g. extruded

Definitions

• the present invention relates to a method for producing a body component of a vehicle body of a vehicle and a body component with a structural component and a further component bonded thereto and also a vehicle body with the body component.
• aluminum components as structural components of bodywork components have the disadvantage that, after their production, they can only be stored in the oxygen-rich atmosphere or environment for a certain period of time before they oxidize.
• the aluminum oxide layer that forms during oxidation causes disadvantageous properties on the surfaces of the structural component.
• the surfaces of the structural component lose adhesion.
• a component surface of an aluminum component with an aluminum oxide layer can no longer be bonded to another component in a sufficiently reliable and safe manner in the case of safety-critical structural components of bodywork components.
• the structural component is dip-coated before being glued to the further component in order to preserve the specific surface properties of the structural component.
• an aluminum component oxidation of the surfaces is thus avoided and the good adhesive properties of the surfaces of the aluminum component are retained for a later adhesive connection to the other component.
• the structural component is usually manufactured by a supplier outside the vehicle manufacturer and is delivered to the vehicle manufacturer for bonding to the further component or for the production of the body component. The vehicle manufacturer then assembles the body component by gluing. Only then does he assemble the entire vehicle body with the body components and carry out the dip painting. A lot of time elapses before the vehicle manufacturer glues the structural component to the other component, not least because of the transport from the supplier to the vehicle manufacturer. The durability of the structural component cannot be maintained and the structural component made of aluminum would oxidize without prior dip painting and lose its good adhesive properties.
• the object is achieved by a method for producing a body component of a vehicle body of a vehicle, the method having the steps:
• the method according to the invention thus achieves reliable bonding of the structural component to the further component for producing the bodywork components, without the structural component having to be additionally dip-coated beforehand.
• the adhesive film is used to provide good adhesion properties for bonding to the other component.
• the further component is no longer bonded to the at least one adhesive surface of the structural component itself, but to the adhesive film or to a surface of the adhesive film at the position of the at least one adhesive surface by means of the adhesive.
• This ensures a reduction in the cost of preparing the structural component for manufacturing the body component and thus the overall cost of manufacturing the vehicle body.
• it improves the environmental balance of the production of the body components and thus of the vehicle body, since the dip painting of only the structural component can be omitted.
• the at least one adhesive surface can comprise at least two or more adhesive surfaces.
• the structural component can have three to thirty, moreover in particular five to twenty adhesive surfaces.
• the structural component can have around ten adhesive surfaces.
• the adhesive can be applied to the entire surface of the adhesive film or to a partial surface of the adhesive film for bonding the structural component to the further component.
• the provision of the structural component can include the production of the structural component. Furthermore, the provision of the further component can include the production of the further component.
• the structural component can consist of a metal or be metallic.
• the further component can consist of a metal or be metallic.
• the other component can be a sheet steel, for example. In the form of sheet steel, for example, it can form a cladding for the vehicle body.
• the further component can also be, for example, a composite material made of a plastic or the like.
• the structural component is an aluminum component.
• the structural component can be made of aluminum or an aluminum alloy or at least have aluminum. With the aluminum component, the holding time is short until the Change surface properties, in particular reduce the adhesive properties due to oxidation.
• At least one surface of the structural component provided with an adhesive film that is exposed to the environment oxidizes, so that an aluminum oxide layer forms or enlarges on the at least one exposed surface.
• the at least one exposed surface is that surface of the structural component on which no adhesive film is arranged or which is not an adhesive surface.
• adhesive surfaces are only those surfaces that are provided for bonding to the other component.
• the at least one exposed surface of the structural component can later also be painted in an immersion bath together with the vehicle body or vehicle body shell.
• the structural component does not have an aluminum oxide layer on the at least one adhesive surface or the aluminum oxide layer on the at least one exposed surface of the structural component is thicker than an aluminum oxide layer on the at least one adhesive surface.
• This can be achieved in that the at least one adhesive surface is stuck over with the adhesive film immediately or promptly (for example at most 3 hours, in particular at most 1 hour or at most 30 minutes) after the production of the structural component or its storage in a low-oxygen or oxygen-free atmosphere.
• very good adhesion properties of the adhesive film can be achieved on the at least one adhesive surface, since this is not yet oxidized or only slightly oxidized at the time the adhesive film is applied.
• the method for providing the structural component provided with adhesive film also has the steps of providing the structural component and applying the adhesive film to the at least one adhesive surface of the provided structural component, so that the structural component provided with adhesive film is obtained.
• the adhesive film can be applied in particular by machine and also in particular in an automated manner, for example by a robot. While the other component is bonded to the structural component by the manufacturer of the vehicle body or by the vehicle manufacturer Vehicle can be done, the manufacture and / or application of the adhesive film can be done at a supplier.
• the adhesive film is provided as tape and is applied to the at least one adhesive surface of the structural component.
• the adhesive film can be applied in particular by machine and also in particular in an automated manner, for example by a robot. Accordingly, the adhesive film provided as tape can be cut to fit the at least one adhesive surface or the multiple adhesive surfaces.
• the tape can be unrolled from a roll, for example.
• the adhesive film can be provided in the form of at least one blank for the at least one adhesive surface or in the form of blanks for the respective adhesive surfaces.
• the thermal curing can take place, for example, in an oven or inductively.
• the adhesive is a pasty adhesive, in particular a pasty 1-component adhesive.
• the adhesive can be a different adhesive from the adhesive film or have a different chemical composition or basis.
• a bodywork adhesive known per se can be selected accordingly as the adhesive.
• the structural component it is possible for the structural component to be provided as an unpainted structural component or to be unpainted before the adhesive film is applied to the structural component. This means that protection against oxidation of the surfaces of the structural component is deliberately dispensed with in order to avoid the associated disadvantages such as increased costs and environmental pollution and to rely only on the adhesive film.
• the structural component in particular the body component
• the structural component is dip-painted, in particular cathodic dip-painted, together with the vehicle body for the first time. Since the vehicle body or vehicle body shell is immersed in its entirety in one or more immersion baths, the structural component is inevitably also painted on the exposed surfaces.
• the adhesive surfaces on the other hand, remain covered with the adhesive film, to which the further component is in turn glued. The adhesive surfaces are therefore not painted.
• the structural component can then withstand high forces or deform only slightly when a corresponding force is applied, for example in the event of a crash.
• the adhesive film comprises epoxy resin.
• the adhesive film can predominantly comprise epoxy resin or, in other words, the adhesive film can be epoxy-based.
• the adhesive film has two adhesive layers and a carrier layer arranged between the two adhesive layers.
• Such an adhesive film can also be referred to as a structural adhesive film.
• the adhesive layers can provide the adhesive effect.
• the backing layer can hold the adhesive layers together and stiffen the adhesive film.
• the carrier layer can have a network structure.
• the carrier layer with a network structure can consist of a fabric, for example.
• the adhesive film can be covered with a foil at the adhesive layers, which prevents unwanted adhesion. Only after the film has been pulled off does the adhesive have an open time, or the adhesive film can then be glued to the structural component.
• the object is achieved by a body component of a vehicle body of a vehicle, wherein the body component has a structural component of the vehicle body and a further component of the vehicle body, an adhesive film being arranged between the structural component and the further component, and on which Adhesive film, an adhesive is arranged, which holds the structural component and the other component together.
• the body component according to the second aspect of the invention thus has the same advantages as have been described in detail in relation to the method according to the first aspect of the invention.
• the body component is produced according to the method according to the first aspect of the invention.
• the structural component is an aluminum component
• the adhesive film is arranged on at least one adhesive surface of the structural component of the adhesive film and no adhesive film is arranged on at least one exposed surface of the structural component, the structural component having an aluminum oxide layer on the at least one exposed surface and (a) the structural component does not have an aluminum oxide layer on the at least one adhesive surface or (b) has an aluminum oxide layer on the at least one adhesive surface, but the aluminum oxide layer on the exposed surface is thicker than the aluminum oxide layer on the at least one adhesive surface.
• the object is achieved by a vehicle body of a vehicle with at least one body component according to the second aspect of the invention.
• a method according to the invention for producing a body component of a vehicle body, a body component according to the invention and a vehicle body according to the invention are explained in more detail below by way of example and schematically with reference to drawings. They each show:
• Figure 1 is a schematic representation of a sectional view of a
• Figure 2 is a schematic representation of a further sectional view of
• Figure 3 is a side view of a vehicle with a vehicle body according to one
• FIG. 4 in a schematic representation of the sequence of process steps in a
• FIG. 1 schematically shows a section through a body component 1 for a vehicle body 21 of a vehicle 20 (see FIG. 3).
• the body component 1 can in be arranged in the visible area of the vehicle body 21 or in the non-visible area of the vehicle body 21 .
• the cross-sectional view from FIG. 1 illustrates the components of the body component 1 and an exemplary arrangement.
• the body component 1 has a structural component 2.
• the structural component 2 is an aluminum component.
• the structural component 2 is a torsion-resistant component which ensures a high level of rigidity in the body component 1 in order to meet safety-related crash requirements in the vehicle body 21 .
• the body component 1 has a further component 3.
• the further component 3 is connected to the structural component 2 by an adhesive bond, as will be explained in more detail below.
• the bond must also meet the safety-related crash requirements of the vehicle body 21, ie withstand certain minimum loads and not come loose in the process.
• the other component 3 can also be a structural component 2, for example made of aluminum, or a simpler component such as a metal sheet, for example a steel sheet, in particular a paneling of the vehicle body 21.
• the bond is designed in such a way that an epoxy-based adhesive film 4.1, 4.2 is applied to various adhesive surfaces 6 of the structural component 2, here for example ten adhesive surfaces 6, with only one adhesive surface 6 being designated.
• the adhesive film 4.1, 4.2 is shown as an example in two parts or adhesive film strips that have been unrolled from a tape.
• the adhesive film 4 can also be just one adhesive film part or strip or more than two parts.
• each part of the adhesive film 4 can be applied to each adhesive surface 6 .
• the adhesive film 4 was applied to the adhesive surfaces 6 immediately or shortly after the production of the structural component 2 , so that the aluminum of the structural component 2 could not oxidize on the adhesive surfaces 6 or only slightly. As a result, a good adhesive effect between the adhesive film 4.1, 4.2 and the structural component 2 could be achieved.
• the adhesion of the adhesive film 4.1, 4.2 to it would be poor or the further component 3 could not be attached to it by means of the adhesive 5 in such a way that that the safety-related crash requirements could be met.
• the adhesive film 4.1, 4.2 adheres well to the structural component 2 and also has good adhesive properties for gluing the structural component 2 to the other component 3 on the surface of the adhesive film 4.1, 4.2.
• the structural component 2 was bonded to the other component 3 by means of the adhesive film 4.1, 4.2 and the adhesive 5 arranged thereon, in this case a 1-component adhesive.
• the body component 1 produced in this way which in turn can be assembled or joined to other body components 1 of the vehicle body 21, thus fulfills the necessary crash requirements with regard to the joint connection between the structural component 2 and the further component 3.
• the structural component 2 does not have to be dip-coated separately before it is joined to the other component 3 .
• the structural component 2 can also be obtained from a supplier and only joined to the further component 3 at the body manufacturer or vehicle manufacturer, since the aluminum of the structural component 2 cannot oxidize on the adhesive surfaces 6 . Instead, the surface of the adhesive film 4 is used for bonding to the further component 3 using the adhesive 5 . Furthermore, the structural component 2 can then later be dip-coated together with the entire vehicle body 21 in a cathodic dip bath.
• FIG. 2 shows an alternative cross-sectional view of the body component 1 from FIG.
• exposed surfaces 7 are not provided with adhesive film 4 and are also not dip-coated.
• the exposed surfaces 7 therefore oxidize on the way from the supplier to the vehicle manufacturer, as a result of which an aluminum oxide layer 8 forms on the exposed surfaces 7 .
• this is not disadvantageous for the adhesion of the structural component 2 to the further component 3 since the structural component 2 is only bonded to the further component 3 on the surfaces of the adhesive film 4 which cover the adhesive surfaces 6 .
• There the adhesive properties are better due to the adhesive film 4 than on the aluminum oxide layer 8 on the exposed surfaces 7.
• FIG. 2 also shows the structure of the adhesive film 4.
• the adhesive film 4 has a net-like carrier layer 9 with an adhesive layer 10.1, 10.2 located below and above it. This structure of the adhesive film 4 ensures good adhesion to the structural component 2 as well as good adhesion for the adhesive 5.
• FIG. 4 schematically shows a sequence of the method steps in a method for producing the body component 1 from FIGS. 1 and 2, as is used in the vehicle body 21 in FIG.
• a first method step 31 the structural component 2 is produced.
• This production of the structural component 2 can take place at a supplier of the manufacturer of the vehicle body 21 or the vehicle manufacturer of the vehicle 20 .
• the structural component 2 can be produced as an extruded profile made of aluminum by extrusion.
• the structural component 2 can be produced as a cast component by casting.
• the adhesive film 4 which is provided as tape, is applied to the adhesive surfaces 6 of the structural component 2. This takes place immediately after the production of the structural component 2 or shortly thereafter, so that no aluminum oxide layer 8 or at most the smallest possible aluminum oxide layer 8 is formed on the adhesive surfaces 6 . As a result, good adhesion of the adhesive film 4 to the adhesive surfaces 6 can be ensured. Accordingly, this second method step 32 preferably also takes place at the supplier's.
• the adhesive film 4 is thermally cured. This can be done, for example, in an oven into which the structural component 2 provided with the adhesive film 4 is introduced. Alternatively, this can be done by inductive and local heating on the adhesive surfaces 6.
• the structural component 2 with the thermally cured adhesive film 4 is transported to the manufacturer of the vehicle body 21 or the vehicle manufacturer of the vehicle 20 and made available to him. A long period of time can pass here. In the process, the exposed surface 7 on the structural component 2 can oxidize. However, since the adhesive surfaces 6 on the structural component 2 are provided with the hardened adhesive film 4, the structural component 2 still has a good adhesive effect, namely on the hardened adhesive film 4 on the adhesive surfaces 6.
• the further part 3 of the body component 1 is provided by the manufacturer of the vehicle body 21 or the vehicle manufacturer of the vehicle 20, which in turn can come from another supplier.
• the structural component 2 is bonded to the further component 3 on the adhesive film 4 by means of the adhesive 5 .
• the body component 1 is obtained as the structural component 2 bonded to the further component 3 and provided with an adhesive film 4 .
• the body component 1 from the structural component 2 and further component 3 is finally joined with further components to form the vehicle body 21.
• the vehicle body 21 is cathodic dip coated with the body component 1 in one or more dip baths.
• the aluminum oxide layer 8 that has formed on the exposed surfaces 7 in the meantime is also coated. This represents the first painting of the exposed surfaces 7 of the structural component 2.

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• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Transportation (AREA)
• Mechanical Engineering (AREA)
• Architecture (AREA)
• Structural Engineering (AREA)
• Body Structure For Vehicles (AREA)
• Application Of Or Painting With Fluid Materials (AREA)
• Adhesives Or Adhesive Processes (AREA)

Priority Applications (3)

Applications Claiming Priority (2)

Publications (1)

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Citations (4)

Family Cites Families (16)

• 2020
  • 2020-07-17 DE DE102020118934.6A patent/DE102020118934A1/de active Pending
• 2021
  • 2021-07-16 JP JP2023502913A patent/JP7753335B2/ja active Active
  • 2021-07-16 US US18/005,685 patent/US20230278646A1/en active Pending
  • 2021-07-16 WO PCT/IB2021/056456 patent/WO2022013837A1/de not_active Ceased
  • 2021-07-16 EP EP21752759.7A patent/EP4182205B1/de active Active

Patent Citations (4)

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