WO2017167430A1 - Method for producing a component, particularly for a vehicle - Google Patents

Abstract

The invention relates to a method for producing a component, particularly for a vehicle, in which at least one add-on part (28) of the component is produced from at least one plastic material by injection moulding, said method comprising the following steps: providing a component part (40) of the component (step S1'"), which comprises at least one layer; production of the add-on part (28) by injection moulding, the plastic being sprayed against a first side (42) of the component part (40) (step S2'"); chronologically following the spraying of the plastic against the first side (42): arrangement of a carrier element (16) comprising at least one layer on a second side (44) of the component part (40), opposite the first side (42), the carrier element (16) being arranged between the component part (40) and at least one tool element (36) (step S3'"); and pressing of the carrier element (16) arranged on the second side (44) with the component part (40), at least by means of the tool element (36).

Description

 Method for producing a component, in particular for a vehicle

The invention relates to a method for producing a component, in particular for a vehicle, according to the preamble of patent claim 1.

Such a method for producing a component, in particular for a

Vehicle, for example, is already known from EP 2 502 723 A1 as known. In the method, at least one attachment of the component is produced by injection molding of at least one plastic. In other words, the attachment is made of at least one plastic by performing an injection molding process by means of which the attachment is made. In EP 2 502 723 A1, the attachment is first produced by injection molding and then pressed over with a fiber mat.

Furthermore, EP 1 917 134 B1 discloses a method for producing a component with a carrier layer and a decorative layer with an additional plastic molded part arranged thereon.

In addition, DE 195 18 124 C1 discloses a device for generating

Molded parts made of thermoplastic material according to the injection molding technique, according to which a mold cavity of a mold is injected by a plasticizing unit via a spray nozzle and melt channels contained in the mold with plastic melt. After Hinterpresstechnik a flat strand of plastic melt is placed on the lower mold half of the mold by means of a connected to a plasticizing spray nozzle and pressed inextricably at the interposition of a cover layer by lowering the upper mold half with the cover layer.

Object of the present invention is to develop a method of the type mentioned in such a way that the device produced particularly cost can be, which can avoid unwanted marks on at least one side of the device.

This object is achieved by a method having the features of claim 1. Advantageous embodiments with appropriate

Further developments of the invention are specified in the remaining claims.

In order to develop a method specified in the preamble of claim 1 type such that the device can be produced particularly inexpensively, which can avoid unwanted, visible marks on at least one side or surface of the device, a first step is provided according to the invention, in which a At least one layer exhibiting component of the device is provided. The component is used to manufacture the

Used in the context of the first step, the component, for example, in its manufactured state.

According to the invention, the method comprises a second step in which the at least one attachment is produced by injection molding by spraying the plastic from which the attachment is made against a first side of the provided and, for example, already manufactured component. This means that the plastic and thus the at least one attachment to the component, in particular to the first side of the component, are molded, whereby the component is provided with the plastic or with the attachment.

The method according to the invention also comprises a third step, which adjoins the second step in terms of time. Thus, in the third step, after the injection of the plastic against the first side, a carrier element having at least one layer is arranged on a second side of the component remote from the first side, wherein the carrier element is arranged between the component and at least one tool element. Furthermore, the method according to the invention comprises a fourth step, which, for example, follows the third step in time. In the fourth step, which is arranged on the second side

Carrier element is pressed with the provided with the at least one attachment component at least by means of the tool element, whereby the carrier element is connected to the component and with the at least one molded-on to the first side attachment. Since the carrier element is arranged on the first side and thus the at least one attachment remote from the second side is the component and thus the attachment with the

Support element, which is also referred to as a carrier material, behind pressed.

In particular, it can be provided that the component and / or the carrier element are formed during the pressing, wherein this deformation is effected, for example, at least by means of the tool element.

By pressing the carrier element with the component, any markings caused by the injection molding can be made on the second side of the component

or on a surface of the component arranged on the second side of the component by means of the carrier element and thus laminated, so that these markings in the finished manufactured state of the component are not visually perceptible to the observers of the component. However, the support element is not only the cover or lamination, for example

Signs, but in particular also for the realization of advantageous, in particular mechanical properties of the device, since in each case at least one layer is formed by the component and by the carrier element. The finished manufactured component thus has at least two layers, so that particularly advantageous mechanical properties, such as an advantageous rigidity of the component, can be realized. At the same time, the weight of the

Component be kept very low. Since the carrier element thus has a dual function, an additional, subsequent and thus time-consuming and costly laminating process can be avoided, so that the device can be produced by the method according to the invention particularly time-consuming and cost-effective while avoiding visually perceptible marks.

The invention is based in particular on the knowledge that in modern

Vehicles, especially cars, pressed and injection-molded components are used, which must be laminated later. In these

Components are, for example, interior components which are used, for example, as interior trim parts in an interior of a vehicle. The subsequent laminating requires at least one more

Process step, which leads to a time-consuming and costly production of the components. In the case of directly behind-pressed components, injection molding of attachments, such as, for example, ribs and / or attachment points, has not hitherto been possible without marking on the surface. However, the avoidance of markings is particularly advantageous if a so-called visible side is formed by the surface, which optically resides in the interior of the respective vehicle occupant is perceptible. For components with direct back injection must be a high

Injection pressure, by means of which the plastic is injection-molded, are used, whereby, however, an undesired change or

Impairment of a decorative layer can come. This also leads to visually perceptible marks. These problems and disadvantages can be avoided by means of the method according to the invention, so that both a time-consuming and cost-effective production and a particularly advantageous visual impression of the manufactured device can be realized.

The method according to the invention can be easily and thus

be carried out inexpensively, since no process window must be found, in which a contact surface of the already molded attachment is still soft enough to connect the attachment to the component, but already strong enough to remove the attachment, for example, from an injection mold. This can be avoided because the plastic and thus the attachment is sprayed directly against the first side and thus against the component, in particular by means of an injection molding tool. Following this, the attachment can under the mediation of the component with the

Carrier element are connected by the carrier element is pressed with the component. In addition, unwanted influences, in particular pressure and temperature influences, on the attachment and on the first side or on a surface arranged on the first side of the component can be avoided in the inventive method. Another advantage of the method according to the invention is that the inventive method, the use of weight-optimized

Sandwich materials allows, for example, as the component

Composite element, in particular as a sandwich composite component, can be produced.

The attachment is, for example, a functional element. The

Attachment is formed for example as a rib, which can act as a stiffening rib for stiffening the component or the component as a whole. Alternatively or additionally, it is conceivable that the attachment as a so-called

Connection point is formed. Such a connection point is for example a connecting element, by means of which the component can be connected to at least one further component of the vehicle. The fact that the component is pressed back with the carrier element, a direct lamination of the component without

additional process step possible, so that the device zei and can be produced inexpensively. Since in each case at least one layer is formed by the component and the carrier element, a layer structure of the component can be realized, so that the finished manufactured component has a layer composite, in particular a sandwich composite, which comprises at least two layers arranged on top of each other. In particular, this makes it possible to realize a sandwich construction of the component, so that the weight of the component can be kept particularly low while simultaneously achieving advantageous mechanical properties. Furthermore, functional integration can be represented by the use of injection molding. By injection molding is meant the injection molding, by means of which the at least one attachment is molded onto the component. Another advantage is that that

Component, in particular the support element, can be decorated directly by means of only low process pressures, so that undesirable, caused by excessively high process pressures impairments can be avoided.

In an advantageous embodiment of the invention, the plastic is injected against the first side by means of at least one second tool element, wherein the arranged between the tool elements component is pressed by means of the second tool element with the arranged between the tool elements carrier element. This means that the second tool element not only for injection molding, but also for pressing or pressing behind the component and the

Carrier element is used, so that the process can be carried out particularly time and cost.

A further embodiment is characterized in that in the spraying of the plastic, the component is supported by means of the same, arranged on the second side of the component tool element, by means of which the carrier element is pressed with the component. When the plastic is sprayed against the first side, a process pressure and forces resulting therefrom, which, for example, on the second side facing away from the first side, act on the component by means of the

Tool element to be supported, by means of which also the pressing

is carried out.

Alternatively, it is possible to use a different from the tool element third tool element to support the forces acting on the component during injection molding. In other words, it is provided in a further embodiment of the invention that when spraying the plastic component is supported by means of a different from the tool element third, arranged on the second side of the component tool element. This means that for pressing a different tool element than for supporting the component during spraying of the Plastic is used. This makes it possible, for example, to support the component particularly advantageous when spraying the plastic and to compress the component during the pressing particularly advantageous, in particular to reshape, so that a particularly advantageous and needs-based production of the device can be realized.

To compress the support element particularly advantageous with the component and

In particular, to be able to connect, it is provided in a further embodiment of the invention that the carrier element is heated and pressed in a heated state with the component. By heating the carrier element, it is also possible to reshape the carrier element, in particular during pressing, so that the component can be produced in a particularly demand-oriented manner. For example, the carrier element is heated by means of at least one heating device.

A further embodiment is characterized in that, before the carrier element is arranged between the tool element and the component, the carrier element is heated, arranged in a heated state between the tool element and the component and pressed in a heated state with the component. In this way, the carrier element can be heated particularly advantageous and then pressed with the component and in particular connected and optionally formed.

In a further embodiment of the invention, at least one adhesive layer is arranged between the carrier element and the component, via which the component is glued to the carrier element. In this way, a particularly firm connection between the component and the carrier element can be realized, so that particularly advantageous properties of the device as a whole can be represented in a simple manner.

In a further particularly advantageous embodiment of the invention, the component is produced as a composite element. The composite element comprises a

Core layer of a plastic foam and at least one at least indirectly arranged on the core layer cover layer of a fiber-reinforced plastic.

In this way, particularly advantageous, in particular mechanical, properties of the component can be realized, wherein at the same time the weight of the component can be kept low. Preferably, the cover layer comprises reinforcing fibers and a thermoplastic matrix in which the reinforcing fibers are embedded. In other words, the fiber-reinforced plastic of the cover layer is a fiber-reinforced thermoplastic, wherein the thermoplastic is preferably polypropylene (PP). The Cover layer is thus preferably formed as a thermoplastic fiber-reinforced cover layer, so that the fiber-reinforced plastic is a thermoplastic. As a result, the weight of the composite element can be kept particularly low, at the same time advantageous properties, in particular mechanical properties, can be realized.

The reinforcing fibers are preferably glass fibers, natural fibers and / or carbon fibers or carbon fibers, wherein the cover layer alternatively or additionally may comprise a nonwoven fabric, in particular a hybrid nonwoven fabric, and wherein for example the reinforcing fibers are formed or provided by this nonwoven fabric.

Alternatively or additionally, it is conceivable that the cover layer at least one

Organo sheet has or is at least formed from an organic sheet. Furthermore, it is conceivable that the cover layer has at least one fabric, in particular a hybrid weave.

In an advantageous embodiment of the invention, it is provided that the

Plastic foam a thermoplastic or a thermoplastic

Plastic foam is. In other words, the plastic foam is preferably formed from a thermoplastic. Preferably, the plastic foam is made

Polyethylene terephthalate (PET) formed. This can be particularly advantageous

Properties of the composite element can be realized.

Furthermore, it is conceivable that a decorative layer is arranged at least indirectly on the cover layer, wherein the decorative layer is arranged, for example, on a side of the cover layer facing away from the core layer. The decorative layer is formed for example as a textile layer and / or may be formed from polyester.

A further embodiment is characterized in that the core layer and / or the cover layer are formed by the carrier element. This means that, for example, the at least one layer of the carrier element is the core layer or the cover layer of the composite element.

Furthermore, it is conceivable that the core layer and / or the cover layer are formed by the component. This means, for example, that the at least one layer of the component is the core layer or the cover layer. In particular, it is possible that the component is designed as a sandwich composite component and thereby has at least said core layer, said cover layer and at least one further cover layer, wherein the core layer is arranged between the cover layers, which are arranged at least indirectly on the core layer. The previous and following statements on the first-mentioned cover layer can also be applied to the further cover layer and vice versa.

The aforementioned composite layer is, for example, a sandwich composite comprising at least the core layer and the cover layers. In this case, the sandwich composite, for example, a so-called micro-sandwich, from which the composite element is at least partially made or will. The

Micro sandwich thus comprises the core layer, which preferably as

thermoplastic foam core is formed. Furthermore, the micro-sandwich comprises one or more cover layers, wherein the cover layer is preferably formed as a thermoplastic fiber-reinforced cover layer. Sandwich composite components

Micro sandwich can be pressed in a so-called one-shot process with a decor or with a decorative layer and thereby injected directly behind. In this process, however, can occur on sensitive surfaces decals on a surface. Even by reducing the injection pressures a back splash without marks on sensitive decors is not possible. These problems and disadvantages can be avoided by means of the method according to the invention, wherein the component can be produced in a cost-effective manner as a sandwich composite component made of micro-sandwich. In this case, a high-quality surface can be created without a subsequent Kaschierungsprozess is required.

Further advantages, features and details of the invention will become apparent from the following description of preferred embodiments and from the drawing. The features mentioned above in the description and

Feature combinations as well as the features and feature combinations mentioned below in the description of the figures and / or shown alone in the figures are not only in the respectively indicated combination but also in others

Combinations or alone, without departing from the scope of the invention. The drawing shows in:

Fig. 1 is a schematic representation of a method for producing a

 Component for a vehicle, wherein Fig. 1 of the explanation of

 Background of the invention is used;

Fig. 2 is a schematic representation of another method for producing a component for a vehicle, wherein Fig. 2 serves to explain the background of the invention;

Fig. 3 is a schematic representation of another method for producing a component for a vehicle, wherein Fig. 3 serves to explain the background of the invention;

Fig. 4 is a schematic representation of a first embodiment of a

 Method according to the present invention; and

Fig. 5 is a schematic representation of a second embodiment of the

 Process according to the present invention.

In the figures, the same or functionally identical elements are provided with the same reference numerals.

Fig. 1 shows a schematic representation of a method for producing a component for a vehicle, in particular a motor vehicle such as a passenger car. The component is used for example as an interior component and comes in the interior of the vehicle, in particular as an interior trim part, used. As will be explained in more detail below, the component is formed as a composite element, in particular as a sandwich composite component, wherein the component in its finished state comprises a core layer 10 of a plastic foam and cover layers 12 and 14, wherein the core layer 10 between the cover layers 12 and 14 is arranged. Here, the cover layers 12 and 14 are arranged on opposite sides of the core layer 10, wherein the cover layers 12 and 14 are arranged at least indirectly on the core layer 10. The respective cover layer 12 or 14 is formed from a fiber-reinforced plastic, wherein the respective cover layer 12 or 14 Reinforcing fibers and a plastic as a matrix, in which the reinforcing fibers are embedded. The plastic from which the matrix is formed is preferably a thermoplastic such as polypropylene (PP). Preferably, the plastic foam of polyethylene terephthalate (PET) is formed, so that the

Core layer 10 is formed as a thermoplastic foam core. The cover layers 12 and 14 and the core layer 10 are constituents of a sandwich composite designated as a whole by 16, which is a layer composite. In this case, the cover layers 12 and 14 and the core layer 10 form respective layers of the layer composite or of the sandwich composite 16.

In the present case, the sandwich composite 16 comprises further layers 18 and 20, which are optionally provided. The layer 18 is arranged between the cover layer 12 and the core layer 10, the layer 20 being arranged between the core layer 10 and the cover layer 14. The layers 18 and 20 are for example

Intermediate layers, in particular primer layers, over which the

Cover layers 12 and 14 are connected to the core layer 10. In particular, an adhesive layer can be or are formed by the respective layer 18 or 20 so that the respective cover layer 12 or 14 is adhesively bonded to the core layer 10 via the respective adhesive layer and is thereby connected. The respective layer 18 or 20 is formed, for example, from a plastic, wherein the respective layer 18 or 20 may be formed, for example, from a film, in particular a plastic film. For example, the film is made of polypropylene or PET.

The method comprises a first step S1, in which an injection molding tool 22 is used which has a first tool half 24 and a second tool half

Tool half 26 includes. The tool halves 24 and 26 are respective

Tool elements by means of which an injection molding process is performed. In the method, add-on parts 28 of the component are produced by injection molding, that is to say by means of the mentioned injection molding method, from at least one plastic. In this case, the tool half 24 includes a channel system 30, in which the plastic, from which the attachment parts 28 are produced, is injected. The attachments 28 are, for example, ribs, which can act as stiffening ribs for stiffening the component. The plastic from which the add-on parts 28 are produced is injected into the channel system 30 in a liquid state, whereupon the plastic from which the add-on parts 28 are manufactured at least partially, in particular completely, hardens or solidifies. In a second step S2 preferably following the first step S1, the tool half 26 is removed and replaced by a second step S2, for example

Heating mirror trained heating element 32 replaced. By means of the heating mirror (heating element 32) respective contact surfaces of the attachments 28 are heated, in particular such that the attachments 28 are melted at the contact surfaces. In other words, the molded attachments 28 are reheated at their contact surfaces by means of the heating mirror and thereby begin to plasticize.

In a third step S3, which can be carried out, for example, at least partially simultaneously with the first step S1 and / or with the second step S2, the sandwich composite 16 described above is heated or heated by means of a tool 34. In a fourth step S4, the attachments 28 are over their heated and thereby melted or plasticized

Contact surfaces against the sandwich composite 16 and in this case pressed against the cover layer 14, in particular by means of the mold half 24, wherein the attachments 28 are pressed against the sandwich composite 16 in a state or pressed with the sandwich composite 16 in a state in which the contact surfaces still plasticized and the sandwich composite 16 is still heated.

In the fourth step S4, a tool half 36 is used, so that the attachments 28 are pressed in the said state by means of the tool halves 24 and 36 against the sandwich composite 16 or pressed with the sandwich composite 16. The tool half 36 can be the tool half 26 or the heating element 32. Furthermore, it is conceivable that the tool half 36 is a tool half, which is different from the tool half 26 and from the heating element 32 and additionally provided for this purpose.

From Fig. 1 it can be seen that preferably directly after plasticizing the

Contact surfaces, the pressing of the attachments 28 takes place with the sandwich composite 16. The sandwich composite 16 forms a carrier material or a

Carrier element, which is back-pressed with the attachments 28 in the manner described, in particular is pressed directly behind. Instead of a heating mirror, alternatively or additionally, radiant heat and / or hot air and / or another heat source can be used for heating the add-on parts 28, in particular the contact surfaces.

In the method illustrated with reference to FIG. 1, it is preferably provided that the sandwich composite 16 be provided in a separate tool in the form of the tool 34 is heated. In other words, the tool 34 is a different tool from the injection molding tool 22 and the tool halves 24, 26 and 36 and the heating element 32.

In particular, it can be provided that the sandwich composite 16 by means of

Tool 34 is heated prior to step S2 and / or during step S2, so that the attachment parts 28 via their fused or plasticized contact surfaces directly after plasticizing the contact surfaces against the

Sandwich composite 16 can be pressed in the heated state. For this purpose, it is for example provided, the tool half 24, in which the attachments 28 are still included, after heating the attachments 28, in particular their

Contact surfaces, away from the heating element 32, in particular turn away, and thereby move toward the tool half 36, so that directly after the plasticizing of the contact surfaces, the backing of the carrier material can take place.

FIG. 2 shows a further, alternative method for producing the described component. In a first step S1 ', the attachments 28 are on the

manner described by injection molding, so that the first step S1 'may correspond to the first step S1. In a second step S2 'is the

Sandwich composite 16 is heated, wherein the second step S2 'may correspond to the third step S3. In a third step S3 ', the attachments 28 are pressed against the sandwich composite 16 in its heated state, so that the third step S3' may correspond to the fourth step S4. The method illustrated in FIG. 2 differs in particular from the method illustrated in FIG. 1 in that, after their manufacture or after their solidification, the attachments 28 are not heated by means of a separate heating element, but instead after the attachments 28 have been sprayed Injection of the plastic, from which the attachments 28 are made, in the channel system 30 is the

Tool half 26 moves so fast or moved so fast to the tool half 36 and pressed so fast against the sandwich composite 16 that the

injection-molded attachments 28 are still sufficiently warm or still contain sufficient heat to the heated and thereby hot cover layer 14, a compound, in particular a cohesive and / or positive

Connection to enter.

Fig. 3 shows another method of manufacturing said device. In the method illustrated in FIG. 3, a first step S1 "is performed, which may correspond to the respective first step S1 or S1 '. In a second step S2 ", the sandwich composite 16 is heated by means of the tool 34, wherein at least parts of the second step S2" can correspond to the second step S2 'and the third step S3, respectively. The method illustrated with reference to FIG. 3 differs in particular from the respective method illustrated in FIGS. 1 and 2 in that for the connection of the sprayed attachment parts 28 with the sandwich composite 16, an additional adhesion promoter layer 38 is used which, for example, forms part of the sandwich composite 16 or in the second step S2 "is heated with the sandwich composite 16. In the present case, the adhesion promoter layer 38 is arranged on the cover layer 14, so that in a third step S3" the sprayed attachment parts 28 against the

Adhesion promoter layer 38 is pressed and thus pressed together with the adhesion promoter layer 38 and with the sandwich composite 16. As a result, the attachments 28 are under

Mediation of the adhesion promoter layer 38 connected to the sandwich composite 16.

For example, an adhesive layer is formed by the adhesion promoter layer 38, which is applied to the sandwich composite 16, in particular to the cover layer 14, and makes it possible to connect the, for example, solidified attachment parts 28 to the warm cover layer 14. At least in the method illustrated with reference to FIG. 3, it is preferably provided that both tool halves 24 and 36 are coated in order, for example, to avoid that the sandwich composite 16 over the

Adhesive layer 38 stick to the tool halves 24 and 36.

In all of the methods illustrated in FIGS. 1 to 3, optionally at least one decoration can be applied, in particular during the pressing. This decor is formed for example by at least one decorative layer, which may be part of the sandwich composite 16. The decorative layer is applied, for example, to that of the cover layers 12 and 14, which is arranged on the side facing away from the attachment 28 of the core layer 10. Thus, in the present case, for example, the decorative layer is applied at least indirectly to the cover layer 12.

For pressing the attachment parts 28 with the sandwich composite 16 at the respective third step S3 'or S3 "or at the fourth step S4 is by means of the tool halves 24 and 36, a pressing force on the sandwich composite 16 and

For example, exercised on the attachments 28. For injection molding of the attachments 28, a corresponding injection pressure acts, which, however, can be kept low. As compared to directly back-injected components only the pressing pressure and no high Spray pressure acts, a pressure acting on the decor pressure can be kept very low, causing unwanted marks on at least one

Surface of the decor can be avoided. This can be a high

Overall surface quality of the device to be realized.

4 shows, in a schematic illustration, a first embodiment of a method by means of which the component described above can be produced in a particularly time-efficient and cost-effective manner, wherein unwanted marks on at least one surface of the component, in particular finished, can be avoided. In a first step S1 '"of the method, a component 40 having at least one layer is provided, for example, the component 40 comprises a thermoplastic fleece. In other words, the component 40 comprises fibers, in particular plastic fibers, embedded, for example, in a plastic of the component 40 In particular, at the first step S1 ", the component 40 is provided in its fabricated state. In a second step S2 '", the attachments 28 are made by injection molding by the

Plastic, from which the attachments 28 are made, is sprayed against a first side 42 of the component 40. This means that in the second step S2 ", the plastic is injected into the channel system 30 and injected via the channel system 30 against the first side 42 and thus against the component 40. Thereupon

For example, the plastic from which the attachments 28 are made, at least partially, in particular completely, solidify or harden.

In a third step S3 'subsequent to the second step S2' ", the sandwich composite 16 is arranged on a second side 44 of the component 40 facing away from the first side 42, the sandwich composite 16 representing a carrier element between the component 40 and the one Tool element performing tool half 36 is arranged. In a fourth step S4 'arranged on the second side 44 support member with the component 40 at least by means of the tool half 36 and in the present case by means of the tool half 36 and the tool half 24 is pressed, so that the component 40 and thus the attachments 28 to the sandwich composite 16th

(Carrier element) are pressed behind. As already indicated, the component 40 is, for example, a thin thermoplastic fleece, which is back-injected with the attachments 28 in the manner described. The component 40 may in particular serve as a cover layer of the sandwich composite 16 or it does not fulfill a mechanical function. In the present case, the component 40 is arranged at least indirectly on the cover layer 14 and thus comes in addition to the cover layer 14 is used. .Alternatively It is conceivable to omit the cover layer 14 and to use the component 40 instead of the cover layer 14 or to form the cover layer 14 through the component 40.

It has proven to be particularly advantageous if, at a fifth step S5, the sandwich composite 16 (carrier element or carrier material) is heated. Furthermore, in the fourth step S4 ', the sandwich composite 16 is pressed in its heated state with the component 40, so that the fourth step S4' preferably follows the fifth step S5. Further, it is possible and optionally provided herein, between the sandwich composite 16 and the component 40 a

Adhesive layer 38 to be arranged, through which, for example, an adhesive layer is formed. The adhesion promoter layer 38 provides for a particularly advantageous adhesion between the sandwich composite 16 (carrier material) and the component 40 back-injected with the attachment parts 28, so that the component 40 is mediated or by means of the adhesion promoter layer 38 to the sandwich composite 16, in particular to the cover layer 14 or at the core layer 10, is connected. Furthermore, layers 12 and 14 can optionally be used.

From Fig. 4 it is further apparent that it is preferably provided that the

Primer layer 38 - when used - together with the

Sandwich composite 16 is heated or heated. In this case, at least parts of the third step S3 '"or the fourth step S4' corresponding to the respective step S3" or S3 or the step S4 correspond, so that for example the tool half 24 moves away from the tool half 26 after spraying the attachments 38, in particular turned away, and in particular moved toward the tool half 36, in particular turned down, so that the

Sandwich composite 16 with the component 40 by means of the tool halves 24 and 36 can be pressed.

The component 40 or its layer can be, for example, a fleece, a fabric or a film. The molded attachments 28 are preferably a solid, in particular cohesive and / or positive, connection with the component 40, in particular with its layer, a. The tool half 24 is a

Injection molding element, by means of which the attachments 28 are molded onto the first side 42. For example, the tool half 36 is one of the tool half 26th

different, additionally provided for tool half, it can be provided that the injection molding element (mold half 24) facing away

or opposite tool half 26 does not yet have the target contour or final contour of the component, but only used to support the injection pressure and thus resulting from the injection molding, acting on the component 40 forces.

After injection molding, for example, the tool half 26 is removed and different from those of the tool half 26, additionally provided

Tool half 36 replaced, which has the target contour or final contour of the device. The removal of the tool half 26 and the replacement of the tool half 26 by the tool half 36 can be done for example by established, known in injection molding techniques such as sliding tables or turntables.

Alternatively, it is possible that the tool half 36 is the tool half 26, so that the tool half 26 and 36 is used both in injection molding to support resulting from the injection molding, acting on the component 40 forces on the second side 44, as well as to is used to press the sandwich composite 16 with the component 40. However, the sandwich composite 16 is required in

Pressing between the tool halves 24 and 26 and 24 and 36, a free space, which is achieved, for example, that the tool half 36 and 26 during pressing further from the tool half 24 is spaced than during injection molding. This is realized, for example, such that the tool half 26 or 36 during pressing does not travel as far toward the tool half 24 as during injection molding. This eliminates the need for an additional mold half and the use of sliding tables or turntables.

The sandwich composite 16 is a layer which is introduced in its heated state between the tool halves 24 and 36 and in particular between the component 40 and the tool half 36. The sandwich composite 16 is pressed with the component 40, for example, such that the tool halves 24 and 36

(or 26) moves toward each other, that is to be driven, whereby a solid pressing of the sandwich composite 16 takes place with the component 40. It has proven to be particularly advantageous if in the fourth step S4 ', that is to say during the pressing, the sandwich composite 16 (carrier element) and / or the component 40 are deformed.

It is conceivable that the carrier element and / or the component 40 each have exactly one layer or several layers, wherein at least one layer of the sandwich composite 16 can be formed by the component 40. An advantage of the method illustrated with reference to FIG. 4 is that the carrier material or

Carrier element acting sandwich assembly 16 is capable of any defects caused by injection marks on the component 40, in particular on its surface, to hide, so that these marks are no longer visible in the finished state of the device.

To realize a particularly strong connection between the component 40 and the sandwich composite 16, an adhesive layer may be used, which is arranged between the sandwich composite 16 and the component 40, so that the component 40 is bonded to the sandwich composite 16 by means of the adhesive layer. Furthermore, it is conceivable to introduce the component 40 in an at least partially melted state, in particular in the completely molten state. Here, for example, the plastic of the component 40 is at least partially melted.

The component 40 may be formed of a fiber-reinforced plastic. In this case, the component 40 comprises, for example, a matrix formed from a plastic as well as reinforcing fibers embedded in the matrix, which are formed, for example, as glass fibers and / or natural fibers. The matrix of the component 40 may be, for example, a thermoplastic, in particular polypropylene (PP). Furthermore, it is conceivable that the component 40 is formed from a PES fleece or has a PES fleece in order to be able to keep the costs particularly low (PES-polyethersulfone). In this case could be used as a carrier element, in particular instead of the sandwich composite 16, a non-woven, which is formed from a fiber-reinforced plastic and thereby comprises a matrix of polypropylene and embedded in the matrix reinforcing fibers in the form of natural fibers.

Another conceivable design would be to use the component 40 as a layer formed of a fiber reinforced plastic, having a matrix of polypropylene and reinforcing fibers in the form of natural fibers embedded in the matrix. It could be used as a support element, a micro sandwich, the For example, at least two outer layers and a foam core of PET disposed between the cover layers, wherein the cover layers are formed for example of a fiber-reinforced plastic and thereby a matrix of

Polypropylene and embedded in the matrix reinforcing fibers in the form of glass fibers. It would also be conceivable that the component 40 already has parts of the

Includes micro sandwiches. It could be formed by the component 40, the cover layer 14, in which case the support member, for example, the core layer 10 and the

Cover layer 12 comprises. In Fig. 4, the optional adhesive layer 38 can be seen, which, however, can be omitted.

FIG. 5 shows a second embodiment of the method illustrated in FIG. 4. In the second embodiment, the separately formed

Tool halves 24, 26 and 36 are used, wherein the attachments 28 are sprayed by means of the tool half 24. By means of the tool half 26, the forces occurring during injection molding and acting on the component 40 are supported. After spraying the tool half 24 is moved away from the tool half 26 and moved to the tool half 36, which comes in addition to the tool half 26 is used. By means of the tool halves 24 and 36, the sandwich composite 16 is pressed with the component 40.

FIG. 5 shows particularly clearly that the fifth step S5 can be carried out at least partially before spraying the attachment parts 28 and / or at least partially during spraying of the attachment parts 28, so that the sandwich composite 16 in its still warm or heated state by means of Tool halves 24 and 36 can be pressed with the component 40.

Claims

claims 1. A method for producing a component, in particular for a vehicle, in which at least one attachment (28) of the component is produced by injection molding from at least one plastic, with the steps:  - Providing a device having at least one layer (40) of the device (step S1 '") which can be transformed when closing one or both mold halves (24,26);  - Producing the attachment (28) by injection molding, by the plastic against a first side (42) of the component (40) is injected;  - leaving the component (40) in the mold half (24);  - Time after spraying the plastic against the first side (42): arranging a at least one at least partially melted layer  on a first side (42) facing away from the second side (44) of the component (40), wherein the carrier element (16) between the component (40) and at least one tool element (36) is arranged (step S3 '). "); and  At least by means of the tool element (36): pressing of the carrier element (16) arranged on the second side (44) with the component (40)  characterized in that  the plastic against the first side (42) by means of at least the second  Tool element (24) is injected, wherein between the  Tool elements (24, 36) arranged component by means of the second Tool element (24) with the between the tool elements (24, 36) arranged support element (16) is pressed. Method according to claim 1, characterized in that when spraying the plastic, the component (40) by means of the same, on the second side (44) of the component (40) arranged tool element (26, 36) is supported, by means of which the carrier element (16) is pressed with the component (40) , Method according to claim 1, characterized in that when spraying the plastic, the component (40) by means of one of the Tool element (36) different third, on the second side (44) of the component (40) arranged tool element (36) is supported. Method according to one of the preceding claims, characterized in that between the carrier element (16) and the component (40) at least one Adhesive layer (38) is arranged, via which the component (40) with the Carrier element (16) is glued. Method according to one of the preceding claims, characterized in that the component is produced as a composite element which has a core layer (10) made of a plastic foam and at least one covering layer (12, 14) of a fiber-reinforced plastic arranged at least indirectly on the core layer (10).