WO2011144359A1

WO2011144359A1 - Method for bending over an edge section of a preform, and removal device for holding a preform, and device for producing decorative parts

Info

Publication number: WO2011144359A1
Application number: PCT/EP2011/002561
Authority: WO
Inventors: Wilfried Schilles; Jürgen SCHELLHASE
Original assignee: Faurecia Innenraum Systeme Gmbh
Priority date: 2010-05-21
Filing date: 2011-05-23
Publication date: 2011-11-24
Also published as: CN103025495A; DE102010021161A1; CN103025495B

Abstract

Method for bending over an edge section (12) of a preform (10), for the interior trim of vehicles, removal device (40.1, 40.2, 40.3) with a temperature-control device (42) for transferring a preform (10), and device for producing decorative parts (110) for the interior trim of a vehicle with a bent-over edge section (12) of a preform (10) for the decorative part (110).

Description

Method for bending over a marginal section of a preform and removal device for holding a preform, and device for

Making decorative parts

This patent application claims the filing date of the German

Patent Application DE 10 2010 021 161.3 filed on 21.05.2010. Through the hereby made reference, the disclosures of these patent applications are contained in the present patent application.

The invention relates to a method for bending a peripheral portion of a preform for the interior trim of vehicles and a

Removal device for holding a preform during the transfer of a first tool in a second tool and a device for

Making decorative parts for the interior trim of a vehicle.

DE 94 20 596 U1 describes a device for forming a Umbugs on a support member to which an adhesive-coated laminating film is provided. The adhesive-coated Kaschierfolie is heated to activate the adhesive by means of an infrared radiant heater and can be pressed by means of a Umbugschiebers a Umbugvorrichtung against the support member.

GB 2 220 879 A describes and claims a method, a preform and an apparatus for producing an interior trim panel of a motor vehicle. It is known to provide a provided with a decorative layer carrier layer at the edge region with a Umbug. For this purpose, the entire edge portion of the carrier layer is heated, for example with an infrared heating element or a hot blower.

The object of the present invention is to solve the above-described disadvantages of known devices and methods. In particular, it is an object of the present invention, a method and a removal device for holding a preform and a device for producing decorative parts for To provide with which a bending of an edge portion of a preform without the use of an abutment can take place. It is also an object of the present invention to reduce the time required to carry out the method.

The above object is achieved by a method with the method steps according to the independent claims 1, 3 and 7 and by a

Removal device with the features of independent claim 1. 1

Advantageous embodiments result from the subclaims appended to the respective independent claims.

The inventive method relates to a method for bending of

Edge sections of preforms, in which, for example, preforms in the form of support parts or decorative parts or films or combinations of such

Components deformed. The deformation is usually carried out in such a way that the respective object, ie the decorative part or the preform, is bent over an abutment. The anvil can be formed flat, so that is followed when bending the preform of a contour. During complete bending over, ie turning over a marginal section of a preform, the abutment must be removed slowly during the turnover process, since otherwise it would stand in the way of a complete turning over of the edge section of the preform. According to the invention, the provision of an abutment for the deformation of a marginal portion and thus an increase in the complexity of the method or the device for manufacturing is avoided. In particular, it is avoided to provide an abutment, for example, in the form of a shaped contour, and, for example, in situations in which full turnover is desired to movably support this abutment in order to secure it during movement

Pull out the envelope process. Furthermore, the process time can be reduced by the method according to the invention or the device according to the invention, since the positioning of the anvil depending on the respective

Deformation situation is eliminated. In addition, according to the invention a defined bending can be achieved. The inventive solutions can in particular by a targeted keeping warm or heating in a device for manufacturing, a

Extraction device or during a method according to the invention a

Section of the preform be held or brought in a plastic state, so that subsequently a bending of the edge portion of the preform can take place.

By "preform" is meant herein in particular a semifinished product prepared after a first processing step for further processing and / or deformation and in particular a bend formation at an edge region or a folding over of an edge region In the case of forming the preform from a layer, it may in particular be a carrier layer of a cladding part to be produced In the formation of the preform from two layers, it may be formed from a carrier layer and a decorative layer.

As a carrier layer is in particular a plastic and in particular a plastic with fibers and especially a polypropylene (PP) -bound fiber mat with natural fibers, a polypropylene (PP) -bound fiber mat with ceramic, carbon or

Glass fibers in the form of a mat or an ABS plastic material (acrylonitrile-butadiene-styrene copolymer plastic) provided in the form of plates. This support layer can be plasticized in particular by heat. The mat of the carrier layer is preferably made of a fiber material, preferably of natural fibers or glass fibers and of plastic or carbon fibers and in particular with

Polypropylene (PP) fibers (binding function) formed. Alternatively or additionally, the so-called Nature Fiber PP (NFPP) or glass fiber PP can be used. The natural fibers may be formed from flax, kenaf, hemp, sisal, linen and / or cotton (or the like). Also, a combination of several types of said natural fibers / or other fibers in the carrier layer may be used. The fibers are used in a preparatory or a process

previous step formed into a mat. Then, under application of pressure and temperature with melting of the plastic portion interconnected plastic mat material for inventive

Use formed as a carrier layer or a first or second layer.

In any case, the decorative layer may be formed from a foam layer and a film or a textile layer. In particular, the decorative layer may be a compact film.

In particular, a film layer of a suitable starting material may be used to form the decoration layer. The film layer may in particular be formed from TPO (thermoplastic polyolefin) or from PVC (polyvinyl chloride).

In addition to the decoration and the carrier layer, in the method according to the invention, at least one intermediate layer and / or a reinforcing layer, such as e.g. a layer of glass fiber fabric may be used, which may be located between the material and the decorative layer or below the carrier layer, ie on the opposite side of the carrier layer to the decorative layer facing side.

Decor and carrier layer and optionally an intermediate layer and / or a reinforcing layer takes place by melting the decorative layer and the carrier layer and in a superimposition of the same and a pressing with a suitable for the application, and preferably at low pressure.

An embodiment of the method according to the invention for bending over an edge section of a preform for the interior lining of vehicles has the following steps:

Providing a heated preform in a first tool,

Cooling of predetermined stability sections or first and second sections of the preform and simultaneously keeping at least one further predetermined deformation section of the preform concerned during a subsequent section-wise deformation, Transfer of the preform from the first tool by means of a

Gripping device or a removal device in a second tool, wherein the removal device is designed such that these

Heats or holds deformation sections of the preform during the removal process and thus brings or holds them in a deformable state,

Bending the edge portion of the preform by means of a

Deformation device of the second tool under deformation of the heated or held by the removal device deformation section.

An embodiment of the method according to the invention concludes

advantageously directly to the production process of a preform. For example, such a preform is produced by using injection molding or pressing processes, which are usually performed at least in some areas with heat generation. Providing a heated

By way of example, a preform in a first tool can thus be the provision of a freshly prepared preform in the corresponding production tool. In other words, for a method in one embodiment, the heated preform is present in a preform making tool as the first tool and may be provided from the corresponding production tool in a heated condition by the manufacturing. It can be provided in the inventive method that it is the heated preform at a temperature at which the entire preform is already plastically deformable, or that it is only a slightly elevated temperature, ie, a temperature greater than the room temperature, is, in which the preform is not yet plastically deformable due to its material properties.

According to a further embodiment of the method according to the invention for

Bending an edge portion of a preform, for the interior lining of vehicles, comprises the following steps: by means of a pliers-like removal device (40.1) removal of the

Preform (10) from a first tool (W1) and inserting the Preform in a second tool (W2), which is a heat-generating

Apparatus (42c) adapted to heat or maintain a deforming portion (16) of the preform (10) extending in strip form over a width of the preform (10) in a longitudinal direction of the preform (10) to a plasticity temperature the the

Deformation portion (16) is plastically deformable, wherein the strip-shaped deformation portion (16) between a first portion (14.1) forming edge portion (12) and in the longitudinal direction of

Deformation section (16) extending second portion (14.2) of the

Preform (10) is arranged, wherein the first and the second portion (14.1, 14.2) at the removal of the preform (10) each having a temperature at which they are dimensionally stable, wherein the pliers-like removal device (40) the first portion (14.1 , 14.2) at least partially engages. in the second tool (W2) by means of the removal device (40) pivoting of the first section (14.1, 14.2) with curvature of the deformation section (16) along the longitudinal direction of the preform (10), so that the angular position of the first section (14.1 ) changes relative to the second section (14.2).

In the method according to the invention it can be provided that, before the removal of the preform (10) in the first tool (W1) a section wise

Tempering of the preform (10) for forming the plastically deformable deformation portion (16) and the dimensionally stable first and second portions (14.1, 14.2) is performed, wherein the deformation portion is heated or kept warm and the first and the second portion (14.1, 14.2 ) are tempered in such a way, in particular cooled, that they are dimensionally stable so that they can be taken and transferred with the removal device (40).

According to a further embodiment of the method according to the invention it can be provided that the keeping warm and / or the heating of the

Deformation section (16) of the preform (10) and / or the tempering of the first and second sections (14.1, 14.2) in one and the same tool (W1, 40).

According to a further aspect of the invention, a method is provided for bending over an edge portion (12) of a preform (10) for the interior trim of vehicles, comprising the following steps: in a first tool (W1), tempering the preform (10) in sections such that a deformation section (16) of the preform (10) extending in a strip-shaped manner over a width of the preform (10) in a longitudinal direction of the preform (10) has a plasticity temperature at which the deformation section (16) is plastically deformable, the strip-shaped deformation section (16 ) between a first portion (14.1) forming edge portion (12) and in the longitudinal direction of the

Deformation section (16) extending second portion (14.2) of the

Preform (10) is arranged, which are tempered such that the first and second sections (14.1, 14.2) have a temperature at which the first and second portions (14.1, 14.2) are dimensionally stable, by means of a vacuum extraction device (40.2) Removing the preform (10) from a first tool (W1), wherein by means of the vacuum removal device (40.2) of the first and the second portion (14.1, 14.2) are held by negative pressure, wherein the deformation portion (16) by means of a negative pressure Unloading device (40.2) integrated

Temperature control device for heating (42a) is kept at plasticity temperature,

Remote from the preform (10) in a second tool by reducing the negative pressure in the vacuum extraction device (16) reduces the negative pressure and / or by generating an overpressure in the vacuum extraction device (40.2), in the second tool (W2) by means of a Umbugvorrichtung (50) pivoting of the first portion (14.1, 14.2) under curvature of the deformation section (16) along the longitudinal direction of the preform (10) so that the angular position of the first portion (14.1) changes relative to the second portion.

According to a further embodiment of the method according to the invention, it can be provided that after inserting the preform (16) into the second tool (W2), the first section (14.1) is deformed by deforming the second section (14.2) by means of a folding device (50) plastic

Deforming portion (16) is pivoted.

According to a further embodiment of the method according to the invention, provision can be made for the second section (14.2) and / or the deformation section (16) to be supported by a holding device (44b) after removal of the preform (10) from the first tool (W1), such that the first section (14.1) can be pivoted under curvature of the deformation section (16) if the negative pressure is reduced or an overpressure is generated in the region of the vacuum removal device (40.2) which is opposite the first section (14.1) to be pivoted in that the first section (14.1) is bent under the curvature of the

Deformation portion (16) is pivoted so that the angular position of the first portion (14.1) relative to the second portion (14.2) changes.

Deformation section (16) extending second portion (14.2) of the

Preform (10) is arranged, which are tempered so that the first and second section (14.1, 14.2) each having a temperature at which the first and the second section (14.1, 14.2) are dimensionally stable, by means of a vacuum extraction device (40.3), the first

Swing arm (44.1) and a second pivot arm (44.2), which are connected to each other via a pivoting hinge (48) and each provided with a negative pressure holding device (44a) for generating a negative pressure, removal of the preform (10) from the first tool (W1), wherein by means of the vacuum holding device (44a) of the first and the second portion (14.1, 14.2) is held by vacuum, so that the preform (16) from the first tool (W1) can be removed and from the

Holding the pivoting arms mechanically, wherein the deformation section (16) by means of a in the first and / or in the second pivot arm (44.1, 44.2) integrated temperature control device for heating (42a) is kept at plasticity temperature by means of the removal device (40.3) by pivoting the first and / or the second pivot arm (44.1, 44.2) pivoting the first section (14.1, 14.2) with curvature of the deformation section (16) along the

Longitudinal direction of the preform (10), so that the angular position of the first portion (14.1) relative to the second portion (14.2) changes.

According to a further embodiment of the method according to the invention, it can be provided that the pivoting of the first and second pivot arm (44.1, 44.2) to the side of the removal device (40.3), which is applied to the side of the removal device (40.3) on which the preform by means of

Vacuum holding device (44 a) is held.

According to a further embodiment of the method according to the invention, it can be provided that the preform (10) after deforming the

Deformation portion (16) is cooled from the plasticity temperature to a temperature at which the deformation portion (16) is dimensionally stable. According to a further embodiment of the method according to the invention, it can be provided that, after shaping of the edge section (12), pressing of the shaped edge section (12) takes place with sections of the deformation section (16) and / or the first and second sections (14.1, 14.2).

After providing the heated preform in a first tool, predetermined first and second stability portions of the preform are cooled and, at the same time, at least one further predetermined deforming portion of the preform involved in a subsequent sectioning deformation is kept warm. In general, keeping warm can also be achieved by simply isolating or not cooling.

According to a first embodiment of the method, upon cooling of the first and second stability sections, a reduction of the temperature of the first and second sections is preferably provided to a temperature equal to room temperature, that is a maximum of 25 degrees Celsius or cooler. In particular, the

Temperature of the first and second sections cooled to a temperature at which the stability sections of the preform are mechanically stable or dimensionally stable, so are not or only with great effort plastically deformable. This temperature is provided so that hardening and / or crystallization of the plastic takes place, and is generally a maximum of 80 degrees Celsius. In the

Use of thermoplastic materials for the preform is cooled to a temperature below the plasticity temperature. To arise

Stability sections of the preform, which over the temperature in a

be cooled in a dimensionally stable state, so that in these first and

Secondary sections no further plastic deformation can and should be performed.

Regardless of the first and second sections are deformation sections of the preform, which subsequently in the course of the process at least

sections are to be deformed, defined, which are not cooled. In this case, for example, by means of a laying of insulation materials, such as insulation mats, this deformation section can be kept warm. Depending on Starting temperature of the prepared and heated preform can be the temperature of the deformation section already in a range in which a plastic deformation of the deformation section is possible with little effort. However, it is also possible that the temperature of the

Deformation section is still below such a temperature. The relevant temperature is hereinafter referred to as "plasticity temperature." This is especially at above 180 degrees Celsius and generally in a range between 170 degrees Celsius and 210 degrees C. If the temperature of a section above this plasticity temperature, so the corresponding section relative At a temperature of a section below this plasticity temperature, the deformation can be carried out only with great force, in part not at all, in other words, there is at least a first and / or second section with a temperature below the plasticity temperature and a deformation portion having a

Temperature equal to or above the plasticity temperature.

Depending on the temperature of the heat-holding deformation section, the subsequent execution of the step of transferring the preform from the first tool by means of a removal device in a second tool is to be designed. In this case, in the case of a temperature of the deformation section, which is above a plasticity temperature, the removal device is designed such that keeping the deformation sections of the preform warm is sufficient to keep it in a deformable state. In particular, even a slight cooling can be accepted, as long as the temperature after insertion into the second tool is still above the

Plasticity temperature is.

For situations in which the respective deformation section is below the plasticity temperature at the time of transfer of the preform, the removal device is designed such that it heats the deformation sections and thus brings them into the deformable state. In the case where the

Removal device still needs to be equipped with an additional heating, but the necessary energy to be introduced is significantly lower than when a cooled preform must be assumed. Decisive, however, is not only the energy to be expended, but above all the time required to bring the preform, in particular the deformation section on the necessary plasticity temperature. By using the

Residual heat of a heated preform provided can reduce the time required for heating. This reduces the total process time and thus increases the efficiency of the process. Moreover, by coupling a method to the manufacturing process of a preform in which it is heated, also an energy saving can be achieved because already used energy for heating the preform during its manufacturing process can be reused and re-heating the deformation sections of the Preform is not necessary. In addition to one

Accelerating the whole process will increase energy efficiency.

The particular temperature to which the deformation sections of the preform are brought or held is dependent on the respective

used material of the preform. It should be noted in particular that the preform is also a multilayer or multi-layered one

Can act preform, wherein the individual layers or layers have different plasticity temperatures. In such a case, the temperature must be set high enough to ensure sufficient deformability of the entire preform system during subsequent bending of the edge portion of the preform, which does not necessarily mean that all the layers or layers of the preform are brought to a temperature. Rather, it is sufficient if the main structural components, ie those layers of the preform that would make the greatest resistance to bending, on the appropriate

Plasticity be brought.

In addition, it should be noted that the selected temperature for the preform no material degradation, in particular no structural impairment of the individual layers or the entire preform entails. It is in particular to prevent burning or burning at too high a selected temperature of the preform.

After transferring the preform by means of the removal device into a second tool, the edge section of the preform is bent over. This is done by means of a deformation device of the second tool with deformation of the heated or kept warm deformation section. In other words, the deformation portion of the preform can be considered as a structural hinge. In this case, the heated or warm deformation section in a plastic state connects the respectively adjacent or an adjacent dimensionally stable section, so that the deformation section can be deformed and, in the case of two adjacent first and second sections, this relative

can be folded each other. The axis of rotation in such a

Deformation is advantageously within the deformation section of the preform. Due to the correlation between a dimensionally stable section, or a plurality of such dimensionally stable sections on the one hand and a mechanically unstable, namely plastically deformable with little force deformation section of the preform no counter bearing for the bending of the edge portion is necessary. Rather, it is sufficient if by means of the deformation of the

Deformation section and / or the corresponding to be moved stability section moves, in particular is pivoted about an axis of rotation. In this case, a bending of the edge portion of the preform takes place. This may include a complete handling. This means that a deformation section and / or a first section, which is connected via the deformation section to a second section, is folded over substantially 180 ° or approximately 90 degrees, and in particular on an upper side of the planar extension of the preform, then that the deformation section again comes to rest on itself or the first section on the second section connected to it via the deformation section. A complete turnover thus produces a seam in the edge portion of the preform. This hem reinforces the preform on its otherwise unstable edges from a mechanical point of view. The term "bending" is to be understood in the context of the present invention, a deformation, which is a bending of the edge portion up to 180 ° or beyond, ie a complete turning or pivoting of the

Edge section includes. However, it is also conceivable that in a method, only a partial pivoting, for example by 90 ° or less, ie a setting up or folding down of the edge section takes place. Depending on the desired subsequent application situation can thereby different angles or just a

make complete sense of the edge portion of the preform. In any case, however, due to a process no counter-bearing is necessary, which on the one hand speeds up the entire process and on the other hand reduces the cost of performing the process by reducing the complexity.

According to a further aspect of the invention, a removal device and in particular a gripping device with a tempering device (42) for

Transferring a preform (10) having a deforming portion extending in a strip over a width of the preform (10) in its longitudinal direction, which is heated or kept warm to a plasticity temperature at which the deformation portion (16) is plastically deformable, the strip-shaped deformation portion (10) 16) between a first section (14.1) forming edge portion (12) and in the longitudinal direction of the deformation portion (16) extending second portion (14.2) of the preform (10) is arranged from a first tool (W1) in a second Tool (W2), where the

Temperature control device (42) is configured such that the removal device (40, 40.1, 40.2, 40.3) can heat or keep at least one deformation section (16) of the preform to a plasticity temperature (16), wherein the

Deformation section (16) is plastically deformable, wherein the tempering device (42) has first surface areas, which are for heating the

Deformation section (16) serve, and on the first surface regions adjacent second surface areas, which serve for cooling the dimensionally stable portions (14.1, 14.2) of the preform (10).

According to a further embodiment of the removal device according to the invention it can be provided that the temperature control device (42) is designed such that they can heat or keep warm by means of heat convection and / or heat radiation in a convection region and / or a radiation region located deformation section (16) of the preform.

According to a further embodiment of the removal device according to the invention can be provided that the removal device (40.1) is formed like a pincer, such that the first portion (14.1) of jaws of the pincers

Removal device (40.1) can be taken.

According to a further embodiment of the removal device according to the invention can be provided that at the first portion (14.1) of the preform (10) facing portions of the jaw of the removal device (40.1) a

Temperature control device for cooling (42b) of the first portion (14.1) of the preform (10) is provided, wherein the deforming portion (16) facing portion of the jaw of the removal device (40.1) with a tempering device for heating (42c) of the deformation section (16) is.

According to a further embodiment of the removal device according to the invention can be provided that the removal device (40.2, 40.3) is a vacuum extraction device (40.2, 40.3), which is provided with a holding device (44), which is designed as a suction device (44a) the n first and second sections (14.1, 14.2) of the preform (10) can hold by means of negative pressure.

According to a further embodiment of the removal device according to the invention can be provided that the vacuum removal device (40.3) is provided with a pivoting hinge (48) on which in each case a first pivot arm (44.1) and a second pivot arm (44.2) is mounted such that first pivot arm (44.1) to the second pivot arm (44.2) is pivotable, wherein the first

Pivot arm (44.1) for holding the first portion (14.1) of the preform (10) and the second pivot arm (44.2) for holding the second portion (14.2) of the preform (10) are formed such that the deformation portion (16) of the preform (16) 10) relative to the pivoting hinge (48) is arranged. According to a further embodiment of the removal device according to the invention it can be provided that the holding device (44) has a mechanical support (44b) which can mechanically support the preform (10) at least in sections.

The removal device, which is provided for transferring the preform from the first tool in a second tool, can be constructive

be designed differently. Thus, it is possible that the removal device, for example in the form of a slider, at least in sections, based on gravity, moves under the preform in order to lift it. Actual gripping, ie enclosing, at least in sections of the preform, is also conceivable by means of a pliers-like removal device, so that the gripped preform can be lifted and transferred. Under removal device is thus basically a mechanical storage of the preform in the

To understand removal device, which allows to transfer this preform from a first tool in a second tool.

To further improve the surface of the preform, it may comprise a decorative sheet provided on one side of the preform. After the preform has been produced in the first tool, this decorative film can be arranged on the still-warm preform and can pass through the further method steps together with the preform. It is advantageous if only the area of the preform is heated, which is not covered by the decorative sheet, ie the side of the preform, which is opposite to the side with the decorative sheet. As a result of the still-warm preform, even in the first tool and / or by the removal device and / or in the second tool and / or by a subsequent compression, a positive connection and / or a material connection between the

Decorative foil and the preform produced. With such a use of the decorative film in a method according to the invention, a visually even more attractive decorative part can be produced from a preform and the decorative film in simple steps and while achieving the advantages according to the invention. An inventive method can be further improved to the effect that the removal device is designed such that it mechanically supports the preform, at least in the deformation section. The mechanical support of the deformation section during the transfer from the first tool to a second tool has the advantage that in the phase of transferring the

Deformation is already plastic. That means he is without big

Force, so even by its own weight, could be deformed by gravity. For situations in which a defined insertion position in the second tool is advantageous or even mandatory, it is therefore appropriate to support the deformation section in its plastic state during the transfer. In addition, in this way an unwanted deformation, and thus possibly associated unwanted structural change of the

Deformation prevented section. The entire transport, ie the transfer between the first tool and the second tool is thereby more stable and an undefined deformation during transport excluded.

A method according to the invention may be further developed in that the holding or heating of the deformation section of the preform takes place in or on the removal device. This has the advantage that the

Removal device does not have to have external components that perform in conjunction with the sampling device, the keeping warm or warming. Rather, it is possible that these components are directly part of

Extraction device are. In this case, the arrangement or the placement in or on the removal device of the respective components for keeping warm or

Heating the deformation section of the tempering method used. So it is possible, for example, that within the sampling device a

Heating coil is embedded. Such a heating coil can for example as

Resistance heating be formed and heat individual areas of the sampling device. About a surface contact between sampling device and

Deformation section of the preform can, via the heat transport phenomenon "heat conduction" of the heating coils, a warming or heating of the

Deformation section of the preform are performed. Alternative to

Use of a heating coil, which, for example, as an electric Resistance heating can be carried out using the same

Heat transfer phenomenon, ie the heat conduction, a channel system may be provided in the sampling device, is guided by which heated fluid. The heated fluid in the duct system gives heat partially to the

Entnahmevorrichtung, which in turn via heat conduction and a

Surface contact with the preform transfers this heat to the deformation section of the preform.

Alternatively, it is also possible to use heat radiation as a heat transfer phenomenon for keeping warm or heating the deformation portion. For example, radiation lamps, such as red light lamps, are on

Removal device providable, which in its radiation area the

Have deforming portion of the preform in the gripped state, so that can be kept warm or heated by heat radiation, this deformation section. A great advantage of such an embodiment is the no longer necessary contact between a surface of the removal device and the deformation section of the preform. Rather, only the orientation of the deformation portion of the preform with respect to the radiation range of such a red light heater of the removal device is crucial.

Likewise without contact, heating or keeping the deformation section of the preform over convection can also be carried out. For example, it is possible that, for example by means of a hot blower, heated air is blown onto the deformation section of the preform. Upon contact of the heated air with the deformation section of the preform, it can release heat and keep the deformation section warm or warm. Again, no direct contact of a surface of the removal device with the deformation portion of the preform is necessary. In addition to heated air is also the direct contact with passing other heat transfer medium, such as

Heat transfer oils conceivable. Of course, it is also possible to combine the different heat transfer phenomena with respect to the design of the sampling device together and to use together.

A method can be further improved to the effect that after bending of the edge portion of a pressing of the bent edge portion with non-bent portions of the deformation portion and / or of the first and the second portion is carried out. This is particularly useful if the bending is to be a complete turning of the edge section. In such a situation two basic situations are to be distinguished from each other.

In a first basic situation, this is a deformation section which forms the entire edge section of the preform. In other words, this deformation section is limited only on one side by a stability section. Upon complete turnup, a bend is created in the deformation section of the preform so that a portion of the deformation section closer to the stability section of the preform remains unchanged while a separate section thereof, which is farther from the stability section, is bent. As a result, part of the deformation portion of the preform comes to rest on itself, and another part to rest on the stability portion. The size of the area which lies on the stability section from the deformation section depends on the geometric dimension of the deformation section and on the type and size of the turnaround. So it is also possible in special forms that the deformation section comes exclusively on itself.

The second basic situation is based on a situation in which the

Deformation portion of the preform is bounded on two opposite sides of a stability section. Here, the one stability section, in particular the second section, is located during the bending in a static position, while the first section, that is, on the opposite side of the deformation section, in the deformation of the deformation section of

Preform with relative to the second, static section, is moved. It is However, it should be noted that the deformation is exclusively in the

Deforming takes place and both sections remain at least substantially undeformed. In this case, therefore, one of the two sections, in particular the first section, is also moved so that the first section comes to rest on the second section when completely turned over. Depending on the type of envelope, the deformation section comes to rest on itself, or additionally on a part of the non-moving, ie static section.

In both cases, then a pressing can be done after the envelope. In particular, a pressing of the superimposed regions of the deformation section makes sense. These are at this time

usually still in a plastic state, so that at this time the pressing can be done at least partially as material conclusion. The pressing serves to further secure the bent-over edge section. In addition to the

The fact that, after the deformation section has cooled down, this retains its previously plastically deformed position and shape, the pressing further enables further stability assurance of the edge section. The pressing thus increases the mechanical stability of the edge portion with a

Bending process according to the method of the invention.

A method may be developed in that the deformation section is defined by the warming or heating and extends completely between two opposite edges of the preform. At a

Embodiment in which the deformation portion is bounded on two sides by the first and the second portion, and moreover advantageously at least partially has a rectangular shape, thus forming the two opposite edges two opposite sides of the rectangle, while the two limiting portions of the remaining edges of the rectangle. By extending the deformation section completely between two opposite edges, a formation with the effect of a film hinge essentially results. In the deformed state, ie with stabilized, cooled first and second sections and warm or heated deformation section, the deformation section serves by its plastic Deformation properties in the heated or kept warm state as a kind of film hinge. This is particularly the case when the extension of the

Deforming portion extends completely between the two opposite edges and has a design in a rectangular shape.

Further, it may be advantageous if, in a method according to the invention, the bending over of the edge section of the preform takes place until the bent-over part of the edge section comes to lie again on the stability section and / or the non-bent part of the deformation section. In other words, a complete turn up to 180 ° is possible. Depending on the initial situation, that is, depending on whether already in the undeformed state of the preform already

Angular offset between the deformation section and the stability section is present, even larger turn-over of more than 180 ° are conceivable. The complete turnover thus produces an improved mechanical stability of the

Edge portion of the preform and reduces the geometric extent of this edge portion to a minimum. In other words, the turn-up in this manner enhances the edge portion by, as it were, doubling the thickness of the edge portion in this area.

Furthermore, it may be advantageous if, in a method according to the invention, the removal device and the deformation device are designed to be integral. Such an embodiment is possible only in a method according to the invention. Only by the fact that no abutment is required to perform the deformation, ie the bending of the deformation portion of the preform, an integral design of the removal device and the deformation device can be constructively possible. The formation of a single tool for

Removal device and deformation device, so their integral training, in addition to the fact that only a single device must be made, the further advantage that no transfer of the preform must be made by the removal device to the deformation device. In this case, the deformation device may be part of a second tool, or this form completely. In addition to cost efficiency through fewer components in this way, the speed of a method according to the invention is increased. Another object of the present invention is a removal device with a temperature control device and a holding device. The holding device serves to hold the deformation section during the transfer from a first tool to a second tool. In this case, the tempering device is designed such that it can heat or keep warm at least one deformation section and configured the holding device such that it at least partially supports this mechanically during the transfer of the dimensionally stable first and second sections. The removal device thus engages or supports the stability sections in mechanical terms. In other words, the stability sections of the preform thus serve as a mechanical interface for gripping, or mechanical support by means of the removal device.

In a first step, independently of this, the heating or keeping warm of the deformation section is carried out via a temperature control device. In this case, tempering in the sense of the present invention quite generally also mean a pure isolation of the corresponding deformation section. There one

inventive sampling device can be used for a method according to the invention, it is also conceivable that already heated preforms are provided. In such a case, it may be sufficient if the temperature of the preform is only maintained in its deformation section, so this section is kept warm. Additional heating is not mandatory. In such a case, the isolation by means of insulation mats or insulation films can serve the effect of keeping warm.

However, it is also possible, depending on the embodiment, to understand under temperature control an active heating of the deformation section. In this case, substantially all three heat transfer phenomena can be carried out individually or in combination for active heating of the deformation section. These are the heat transfer phenomena heat conduction, heat radiation and heat convection.

In the event that an active temperature control by means of heat conduction is desired, it may be advantageous if, in a removal device according to the invention, the temperature control device has first surface areas which are used for heating the Serve deformation sections. Adjacent to the first surface regions, second surface areas are advantageously provided, which serve to cool the stability sections. In this way, by means of a removal device according to the invention, a preform can be equipped with different temperature ranges. The surface regions of the tempering device are in direct contact with the surface of the deformation section or the first and second sections of the preform and can thus transfer heat. The heat conduction takes place through the direct contact of the respective surfaces. In this case, heat is transferred from the tempering device via the first surface regions to the deformation section of the preform in a first surface area by the tempering device, which may be formed, for example, by means of heat loops or heating wires, as already explained above. For example, cooling channels are present in the second surface regions of the temperature control device, through which cooling fluid can be delivered. This cooling fluid can dissipate heat which is emitted by the preform, in particular its stability sections, via the second surface regions and absorb it in the cooling channels by means of the coolant. In this way, a compact and uniform cooling and heating can be achieved, so that the removal device in addition to the transfer from a first tool in a second tool receives the additional functionality of generating or maintaining the temperature ranges. In this case, this additional functionality can be executed in addition to an already preceding cooling and / or heating, or holding process in a first tool. However, in the context of the present invention, it is also possible for the cooling and / or the heating, or keeping warm, of the respective sections of the preform to be carried out exclusively in the removal device. The advantages of the latter embodiment are, in addition to the focus on the removal device itself, to be seen in the fact that existing first and second tools can be used, which can be equipped by using a removal device according to the invention with the functionality of the invention.

Alternatively, or in parallel, so in combination with a system with heat conduction, a removal device may also be equipped with a temperature control, the can heat or keep objects in a convection area and / or in a radiation area by means of heat convection and / or heat radiation. Radiation range or convection range is to be understood as the range which can be influenced by the temperature control device by means of heat convection and / or thermal radiation. The holding device is the

Removal device designed such that the at least one

Deformation portion of the preform is held in the convection region and / or the radiation region of one of the above-mentioned heat sources. In other words, there is a correlation between the arrangement of

Temperature control, which thus the heat convection and the heat radiation in a particular direction, namely in the convection region and / or the

Radiation sends on the one hand, and on the other hand, the arrangement or the configuration of the holding device, which holds the preform in the corresponding convection region and / or radiation area. By this is meant that the deformation section of the preform can be held by the holding device both directly and indirectly in this respective area.

In particular, in the provision of non-contacting tempering, ie convection or radiation, it may be advantageous if in the plastic

Deforming section, ie a deformation section with a high temperature no direct contact between the sampling device and preform.

Rather, the preform, for example, mechanically only in dimensionally stable

Sections of the preform supported by the holding device. In this case, however, the holding device is designed such that it by the firm connection between the dimensionally stable sections and the deformation section of the

Preform this deformation section exactly within the radiation range or the convection of the temperature control of the extraction device holds.

The holding device of a vacuum extraction device according to the invention can be at least partially designed as a suction device. These

Suction device can hold the mechanically supported areas of the preform, ie at least the stability sections or dimensionally stable sections of the preform, by means of negative pressure. In other words, the holding device serves in this case to create a vacuum between itself and the preform. This negative pressure sucks the preform so to speak to the holding device and keeps it in this position. An advantage of such an embodiment is the fact that in this case a particularly simple lifting of the preform is possible. In this case, the vacuum extraction device does not have to be driven under the preform, based on the direction of action of gravity, but can grip and lift it from above. Also a mechanical jamming or a

mechanical exertion of force on the preform is such

Embodiment not necessary. Rather, a holding device in the form of a suction device is a particularly gentle way of transporting the preform between a first and a second tool.

In a removal device according to the invention, the holding device may alternatively or in parallel at least partially also be formed as a mechanical support. This mechanical support serves to hold the mechanically supported areas of the preform by means of a bearing force. There are essentially two ways to achieve such a mechanical contact force. One of these two options is the provision of a supporting support, which in the simplest way in the form of a plate under the mechanical zu

supporting areas of the preform is pushed. For example, this plate may be at least partially provided with inclined planes or wedge-shaped regions which facilitate pushing the plate under the stability sections of the preform.

Alternatively, it is also conceivable that the bearing force is generated by jamming of the preform in the dimensionally stable sections of the preform. This is conceivable, for example, by means of a gripper which engages in the form of a pair of pliers from two opposite sides of the preform and clamps between the two pliers regions. Advantage of the latter embodiment is the

Independence of the transport direction and the direction of gravity. In contrast, however, is the mechanical support against gravity, so a pure

Resting of the preform on the holder of advantage, since in this case a There is very little interference with the surfaces and structure of the preform, as it exerts little force on it.

Another object of the present invention is a device for

Producing decorative parts for the interior trim of a vehicle with a bent edge portion of a preform for a decorative part. Such a device has a removal device according to the present invention. In addition, a delivery device is coupled to the removal device, which serves for moving the removal device between a first tool and a second tool. The removal device can therefore by means of

Feeding device to be moved. The feeder thus serves the

Transport functionality of the sampling device and can, for example as

Linear guide, be designed as a rotation guide or as a combined linear / rotary guide. In this case, simple embodiments are conceivable, as are possible, for example, with simple linear guides. Also more complex

Embodiments, for example, robotic systems or complex

Lever kinematics are conceivable to provide such a feeding device.

According to a further aspect of the invention, an apparatus for producing decorative parts (110) for the interior lining of a vehicle is provided with a bent edge section (12) of a preform (10) for the decorative part (110), the device comprising: a gripping device (40 ) with the features of one of claims 9 to 13 with the gripping device (40) coupled to the feeding device (46) for

Moving the gripping device between a first tool (W1) and a second tool (W2).

The present invention will be explained in more detail with reference to the attached

Drawings. The terms "left", "right", "top" and "below" used herein refer to an alignment of the drawing figures in which the drawings are normally readable. Show it: 1 shows a cross section of an embodiment of the present invention with a preform in the first tool, the preform according to FIG. 1 with cooled first and second sections, the preform according to FIG. 2 in the gripped state of an embodiment of a removal device, an embodiment of a second tool in which

Preform is inserted by means of a removal device, a deformation device of an embodiment of the present invention during the bending of the edge portion,

Conclusion of the bending process according to FIG. 5,

Pressing the folded edge section after a

Embodiment of the present invention

Result of the compression of FIG. 7, in cross-section, a removal device of a further embodiment of the present invention, the embodiment of FIG. 9 with the preform in the raised state, in cross-section, a further embodiment of a

Removal device with integrally formed deformation device, in cross-section, another embodiment of a

Removal device with a preform in the raised state,

Fig. 13a in cross section a further embodiment of a

Removal device in the opened state, 13b, the removal device of FIG. 13a in the gripped state,

Fig. 14 is an isometric view of an embodiment

inventive preform.

An embodiment of a method according to the invention will be described with reference to FIGS. 1 to 6. So is this method of bending a

Edge portion 12 of a preform 10 designed for the interior trim of vehicles. In this case, in a first step, as shown in Fig. 1, the

Preform 10 in a heated state in a first tool W1

provided. In all other figures as well as in the present Fig. 1, a heated area or a heated portion of the preform 10 is marked with a dotted filling. This dotted filling indicates schematically that this section has a temperature equal to or greater than the plasticity temperature of the respective section. In contrast, non-plastic regions, ie mechanically stable regions with a hatching of parallel lines in the respective cross-section are characterized.

The preform 10, as provided in the tool W1 in FIG. 1, is completely heated. This has been done, for example, by a previous manufacturing process of the preform 10.

Subsequently, predetermined first and second sections 14.1 and 14.2 of the preform 10 are cooled. This cooling takes place by means of tempering devices 42, which are configured in sections of the tool W1 as tempering devices 42b for cooling. Cooling fluid, for example liquid coolant, which can absorb and dissipate heat emitted by the preform 10 in the first section 14.1 and the second section 14.2 can be passed through these tempering devices 42b for cooling. In this way, already in the tool W1 targeted cooling of the predetermined first and second portions 14.1 and 14.2 of the preform 10 take place. The predetermination of the position of the first and second

Sections 14.1 and 14.2 is defined by the position of the temperature control device 42b for cooling. Depending on the arrangement of the respective coolant channels, that is, depending on the arrangement of the respective temperature control device 42b for cooling, the corresponding contact portions of the preform 10 with the first tool W1 as the first and second sections 14.1 and 14.2 predetermined.

In addition, the first tool W1 is provided with a temperature control device 42a for

Heating or keeping warm. This is at the present

Embodiment also carried out by fluid channels through which in this case heated fluid, for example, warm liquid or warm air can be passed. The heat given off by the fluid can in turn, via contact with the preform 10, keep the thus determined deformation section 16 of the preform 10 warm. However, keeping warm could also by the

Design of the first tool W1 be formed in this area in a heat-insulating manner.

The result of the cooling with the temperature control device 42b for cooling as well as the keeping warm with the tempering device 42a for keeping warm is shown in FIG. There you can see that at the left and at the right end of the

Preform 10 dimensionally stable first and second sections 14.1 and 14.2 have been formed, which have been defined by the cooling below its plasticity temperature and the consequent solidification or the achievement of mechanical stability. In the central region, ie in the middle of the preform 10, bounded on both sides by the dimensionally stable first and second sections 14.1 and 14.2, a deformation section 16 of the preform 10 can be seen. The edge portion 12 of the preform 10 is in this embodiment both by a

Deforming section 16, as well as formed by a dimensionally stable first portion 14.1. In this case, the preform 10 can also be a significantly larger geometric expression than is shown in the figures.

In particular, it is possible that the edge region 12 has only a small fraction of the geometric extent of the preform 10 and thus the

Main extension of the preform 10 is formed by the first portion 14.1.

Subsequent to the targeted cooling and keeping warm of the preform 10, this preform 10 from the first tool W1 by means of a

Removal device 40.1, 40.2 gripped and transferred to second tool W2. These steps are shown in FIGS. 3 and 4 as an embodiment and will be explained in more detail with reference to these figures.

In the embodiment according to FIG. 3, a removal device 40.1 is provided, which at least partially mechanically supports the dimensionally stable first section 14.1 of the preform 10. The removal device 40.1 is designed here like a pliers, and surrounds the first portion 14.1 of the preform 10 almost completely. Thus, both a support of the first portion 14.1 as well as a pincer-like gripping of the stability portion 14 by means of the gripping jaws of

Removal device 40.1 of the embodiment in Fig. 3 possible. When pliers-like gripping, it is also possible that the two pliers elements or gripping jaws can move toward each other and the gripped first section 14.1

can pinch.

In Fig. 3, the preform 10 is shown in the already raised state. This lifting is continued, so that after the complete lifting of the

Preform 10 from the first tool W1 transported this, in particular in the second tool W2 can be transferred. In Fig. 4, the preform 10 is still gripped by the removal device 40, but already stored in the second tool W2 and completed the transfer almost completely.

It can also be seen in FIG. 4 that the preform 10 no longer has its originally substantially horizontal shape, as shown in FIGS. 1 and 2. Rather, it is already bent, at least partially in its edge portion 12, namely by 90 °. Here it can be seen that the deformation, that is the

Bending the edge portion 12 of the preform 10 can already take place during insertion into the tool W2. Once again it can be seen that due to the defined temperature distribution in the preform 10, in particular the

Distinguishing between dimensionally stable first and second sections 14.1 and 14.2 and the deformation section 16, no counter bearing for the deformation, ie the bending of the edge portion 12 of the preform 10 is necessary. Regardless of whether at least part of the bending of the edge portion 12 of the preform 10 already takes place during insertion into the tool W2, beyond a further deformation by a separate deformation device 50 take place. This will be shown below with reference to FIGS. 5 and 6.

In a simple embodiment, this is a relative to the second tool W2, in particular its in Fig. 5 and 6 below the bearing shell, movable block. This block of the deformation device 50 shifts the edge section 2 at least partially downwards and to the left relative to the statically remaining dimensionally stable second section 14. 2 of the preform 12. The bending is completed at the latest after a complete transfer of the dimensionally stable second portion 14.1, as shown in Fig. 6. Fig. 6 thus shows a possible final result of a method according to the invention.

It should be noted that the individual embodiments are only exemplary possibilities to carry out a method according to the invention. Thus, in these exemplary embodiments, for example in FIGS. 3 and 4, a pincer-like removal device 40.1 is shown, which lifts the preform 10 exclusively on its dimensionally stable first section 14.1. The pincers

Removal device 40.1 is shown in a state in which the dimensionally stable first portion 14.1 of the preform 10 is held by the pliers-like removal device 40.1. Furthermore, the removal device 40.1 has a

Temperature control device 42b for cooling and a temperature control device 42c for heating by means of radiant heat on. The tempering device 42b for cooling is also used as a cooling channel for the passage of cooling fluid, for example

Coolant, executed. This can, as already described for the embodiments in Figs. 1 and 2, for dissipating heat via the contact with the

dimensionally stable first portion 14.1 of the preform 10 are used.

The temperature control device 42c for the radiant heat is designed here as a red light emitting lamp. The red light-emitting temperature control device 42c radiates into an area in which the arrangement of the preform 10 in the

Removal device 40.1 and the deformation portion 16 of the preform 0 is located. In other words, the removal device 40.1 grips the preform 10 such that the deformation section 16 of the preform 10 lies in the region comes, which is to be heated by the temperature control device 42c with radiant heat. During the transfer of the preform 10 from the first tool W1 into the second tool W2, the first section 14.1 of the preform 10 is further cooled by the tempering device 42b, while the deformation section 16 of the preform 10 is kept warm by means of the temperature control device 42c for heating by means of radiant heat or is heated.

It goes without saying that the individual variants, as explained with reference to FIGS. 1 to 6, represent only exemplary embodiments which can be replaced alternatively or in parallel by further exemplary embodiments as described in the following figures. In particular, the nature of the individual components, for example the tempering devices, the deformation device and the removal device, and their arrangement throughout the system can be arbitrarily exchanged between the individual described embodiment in order to be adapted to the respective application situation.

FIGS. 7 and 8 show an additional finalization step of a method according to the invention. Here was the bending of the edge section 12 of the

Preform 10 performed such that a complete turnover has been achieved. In other words, comes as shown in Fig. 7, the

Deformation section 16 with itself again in contact, since he gets in lying during handling with untransformed areas of the deformation section 16 in contact. In addition, the two sections 14.1 and 14.2 of the preform 10 also come into contact with each other, in particular to each other. In other words, an upper stability section 14.1 and a lower stability section 14.2 of the preform 10 can be seen in FIG. 7, which lie on one another. In addition to the fact that after cooling of the edge portion 12, in particular of the deformation portion 16, the geometric shape of the preform 10 in the formed shape, ie in the bent or folded in this embodiment shape remains, it may be useful if subsequently a Pressing process is performed. Such a pressing process is shown for example in FIGS. 7 and 8. In this case, by means of a pressing tool in the tool W2 from above the folded portion of the edge portion 12 on the remaining part of the edge portion 12, or the first portion 14.1 of the preform 10 on the second portion 14.2 of

Preform 10 pressed. During this pressing, in addition to a pure positive connection, in particular in the still plastic region of the deformation section 16, a material closure can take place. In addition to the purely mechanical stabilization by the cooling of the deformation section 16 is in this way on form and / or material closure, a further enhancement of the mechanical stability of the

Edge portion 12 of the preform 10 generated.

In addition, the second tool W2, as shown in FIG. 7 as a possible embodiment, may also have a tempering device 42b for cooling. This is designed in this case to cool the deformation section 16 of the preform 10 after bending, so after deformation again. In other words, this cooling serves to finalize the shape, ie to cool the deformation range, out of its plastic temperature range, ie to a temperature below the plasticity temperature.

A further embodiment of a removal device 40.2 according to the invention will be explained with reference to FIGS. 9 and 10. FIG. 9 illustrates the situation in which a preform 10 provided in a heated situation is to be lifted off a first tool W1. FIG. 10 shows the situation in which the preform 10 has already been removed from the first tool W1 and the transport process to a second tool W2 can be carried out. The transport operation may be performed, for example, to a second tool W2, as shown as a possible embodiment in FIGS. 3 and 4.

The removal device 40.2 is shown in FIGS. 9 and 10, a vacuum removal device 40.2 and has in this embodiment, a holding device 44 in the form of a holding device 44a by means of negative pressure. There are thus provided suction channels, which with suction hoses, which are not shown for reasons of clarity, with a likewise not shown pump in fluidkommunizierender Connection stand. By means of this pump and suction hoses, a negative pressure can be applied to the suction channels on the holding device 44a by means of negative pressure, so that a vacuum is created between the removal device 40 and the preform 10 in the corresponding regions of the suction channels. By this negative pressure, the preform 10 is sucked in these areas, so to speak, and mechanically supported by the suction on the surface of the removal device 40. In the embodiment of the removal device 40 according to FIGS. 9 and 10 is given a mechanical support of the entire preform 10. However, the suction takes place only in the fomstabilen sections 14.1 and 14.2 of the preform 10, since in this area sufficient stability of the preform 10 prevails in order to achieve such a negative pressure. Otherwise, there would be the danger that material of the deformation section 16 of the preform 10 located in the plastic temperature range, that is above the plasticity temperature, will be sucked into the vacuum channels.

In addition, in the vacuum extraction device 40.2 this

Embodiment schematically shown in FIGS. 9 and 10, a feeder 46 is shown. This is designed here as a spindle drive and serves to lift the entire removal device 40.2 from the first tool W1 after sucking the preform 10 by means of the vacuum extraction device 40.2. By sucking the preform 10, this is raised together with the vacuum removal device 40.2. The feeder 46 may include other mechanical components, such as linear guides or lever kinematics or even a robot guide, which serves to cover the entire

Vacuum removal device 40.2 including the sucked preform 10 to the second tool W2 to transfer. To deposit the preform 10 in a second tool W2, the negative pressure is reduced until a balance with the ambient pressure arises. In exceptional cases, for overlying the preform 10, an overpressure can be applied via the same vacuum channels of the holding device 44a, so that the preform 10 is, as it were, repelled by the vacuum removal device 40.2. FIG. 11 shows a further embodiment of a vacuum removal device 40.3 according to the invention. In this embodiment, a possibility of an integral embodiment of the vacuum extraction device 40.4 and the deformation device 50 is shown. The vacuum removal device 40.3 is also configured with holding devices 44a by means of negative pressure, as has already been explained with reference to FIGS. 9 and 10. Unlike in the embodiment according to FIGS. 9 and 10, however, the negative pressure does not necessarily have to be applied here when depositing in the second tool W2 and the preform 10 has to be deposited. Rather, a first swivel arm 44.1 of the vacuum removal device 40.3 can serve as a deformation device 50 via a hinge 48 and can be swiveled relative to a second swivel arm 44.2 of the vacuum removal device 40.3. This pivoting movement, together with the remaining negative pressure and the suction of the preform 10 that is thus present, leads to a deformation, namely a bending over of the edge section 12 of the preform 10. In other words, in the embodiment according to FIG. Removal device 40.3 performed integrally with the deformation device 50, but also beyond the deformation device 50 substantially integral with the second tool W2. Such an embodiment, as it were, not only enables the heating or keeping warm of the deformation portion 16 of the

Preform 10 during the transition between the tools W1 and W2, but also beyond the deformation so bending the edge portion 12 of the preform 10 in the integral device.

In the embodiments as shown in FIGS. 9, 10, 11 and 12, tempering devices 42 are provided in the respective removal devices 401, 40.2, 40.3, which are designed as a tempering device 42a for heating. Again, as an option, it is about fluid channels through which liquid or gaseous heated fluid capable of transferring heat to the deformation section 16 of the preform 10 which is in surface contact with the sampling device 40 may be dispensed. Alternatively, the temperature control 42a may be designed for heating as a resistance heating, which heats up when current flows. Such heating up leads in an identical way to a heat transfer to the deformation portions 16 of the preform 10th

FIG. 12 shows a further alternative of a vacuum removal device 40.2 according to the invention. Here is also basically with a

Negative pressure in the form of a holding device 44a worked by means of negative pressure, however, the holding device 44 additionally comprises a holding device 44b means

mechanical support. This holding device 44b by means of mechanical support is designed here as a slide, which moves after the preform 10 has been raised from the first tool W1, as shown by the arrow in FIG. 12, under the preform 10. This underride serves the

mechanical superimposition of the preform 10 on the holding device 44b by means of mechanical support, so that by the gravity and the weight of the preform 10 it comes to rest on the holding device 44b for mechanical support. After fully pushing the holding device 44b for mechanical support along the arrow direction, as shown in FIG. 12, theoretically the negative pressure on the holding device 44a can be deposited by means of negative pressure since the support on the holding device 44b is completely sufficient for mechanical support.

FIGS. 13a and 13b show a further embodiment of a removal device 40 according to the invention. In such a removal device 40 is a complete enclosure, for example by means of a scissor kinematics or a forceps kinematics possible. The removal device 40 has two in order

Pivoting hinge 48 pivotable parts, one being the upper part and the other is the lower part, as shown in Figure 13a. The two parts can be pivoted to each other, so that with the pivoting hinge 48, a forceps mechanism or a scissors mechanism is formed. In FIG. 13a, like a scissor-like or pincer-like removal device 40, the preform 10 has already been inserted or inserted in a partially cooled and partially heated position. The gripping can take place in a similar manner, as has already been explained with reference to FIG. 3, namely by pushing at least one of the two scissor elements of the removal device 40 under the preform 10 in the first tool W1. Subsequently, the upper part of the

Removal device 40 folded over the pivoting hinge 48 on the lower part, so that a situation arises, as shown in Fig. 13b.

In one embodiment according to FIGS. 13 a and 13 b, the

Removal device 40 a tempering 42, which as

Temperature control device 42d is designed for convection heat. In a simple manner, a gap 45 is provided here, which is between the upper part of

Extraction device 40 and the preform 10 exists. Through this gap 45, a warm fluid, for example, a warm liquid or heated air can be promoted. By means of this warm fluid, heat which originates from the respective convection medium can be released by convection heat to the deformation section 16 of the preform 10 in order to keep it warm or warm.

FIG. 14 schematically shows an isometric view of an embodiment of a preform 10 which already has the individual sections, the deformation section 16 and the dimensionally stable first and second sections 14.1 and 14.2 by cooling and heating or keeping warm according to the invention. In this embodiment, the deformation portion 16 of the preform 10 is in

Substantially rectangular executed and extends completely between two edges 20 of the preform 10. These two edges 20 and the rectangular full extent of the deformation portion 16 serve to a film hinge function is possible, which pivotal movement of the dimensionally stable first portion 14.1 of the preform 10th relative to the second portion 14.2 of the preform 10 allows. Such a geometric design is a particularly advantageous way to allow the bending of the edge portion 12 of the preform 10.

The illustrated embodiments are examples that do not limit the scope of the present invention. In particular, the individual components explained with regard to the individual embodiments are interchangeable with one another depending on the application situation. Above all, the choice of the method for heating, or keeping warm the deformation portion 16 of the preform 10 can thereby be chosen freely between the described alternatives or combined.

LIST OF REFERENCE NUMBERS

10 preform

12 edge section

14.1 Stability section, dimensionally stable, first section

14.2 Stability section, dimensionally stable, second section

16 deformation section

20 edge of the preform

40 extraction device

40.1 pincer-like removal device

40.2 Vacuum removal device

40.3 Vacuum removal device with swivel arms

42 tempering device

42a tempering device for heating

42b Temperature control device for cooling

42c tempering device for radiant heat

42d Temperature control device for convection heat

44 holding device

44.1 first swing arm

44.2 second swivel arm

44a holding device by means of negative pressure

44b holding device by means of mechanical support

45 gap

46 feeding device

48 swing hinge

50 folding device

110 decorative part

W1 first tool

W2 second tool

Claims

Patent claims

A method of bending over an edge section (12) of a preform (10), for the interior lining of vehicles, comprising the following steps: removal of the device by means of a tongs - like removal device (40.1)

Preform (10) from a first tool (W1) and inserting the

Preform in a second tool (W2), which is a heat-generating

Deformation section (16) extending second portion (14.2) of the

Preform (10) is arranged, wherein the first and the second portion (14.1, 14.2) at the removal of the preform (10) each having a temperature at which they are dimensionally stable, wherein the pliers-like removal device (40) the first portion (14.1 , 14.2) at least partially engages. in the second tool (W2) by means of the removal device (40) pivoting of the first section (14.1, 14.2) under curvature of the

Deformation portion (16) along the longitudinal direction of the preform (10), so that the angular position of the first portion (14.1) relative to the second portion (14.2) changes.

2. The method according to claim 1, characterized in that before the removal of the preform (10) in the first tool (W1) a section wise

Temperature control of the preform (10) for forming the plastically deformable deformation portion (16) and the dimensionally stable first and second sections (14.1, 14.2) is carried out, wherein the deformation section is heated or kept warm and the first and the second section (14.1, 14.2) tempered in such a way, in particular cooled so that they are dimensionally stable so that they are connected to the removal device (40). can be taken and transferred.

3. The method according to any one of the preceding claims, characterized

characterized in that the keeping warm and / or the heating of the

Deformation section (16) of the preform (10) and / or the tempering of the first and second sections (14.1, 14.2) in one and the same tool (W1, 40) takes place.

A method of bending an edge portion (12) of a preform (10) for the interior lining of vehicles, comprising the steps of: tempering the preform (10) in sections in a first tool (W1) such that it stretches across a width the preform (10) in a longitudinal direction of the preform (10) extending deformation portion (16) of the preform (10) has a plasticity temperature at which the deformation portion (16) is plastically deformable, wherein the strip-shaped deformation portion (16) between a first portion (14.1) forming edge portion (12) and one in the longitudinal direction of

Deformation section (16) extending second portion (14.2) of the

Preform (10) is arranged, which are tempered such that the first and second sections (14.1, 14.2) have a temperature at which the first and second portions (14.1, 14.2) are dimensionally stable, by means of a vacuum extraction device (40.2) Removing the preform (10) from a first tool (W1), wherein by means of the vacuum removal device (40.2) of the first and the second portion (14.1, 14.2) are held by negative pressure, wherein the deformation portion (16) by means of a tempering device for heating (42a) integrated in the vacuum extraction device (40.2) is kept at plasticity temperature,

Remote from the preform (10) in a second tool by reducing the negative pressure in the vacuum extraction device (16) reduces the negative pressure and / or by generating an overpressure in the vacuum extraction device (40.2), in the second tool (W2) by means of a Umbugvorrichtung (50) pivoting the first portion (14.1, 14.2) under curvature of the

5. The method according to any one of the preceding claims, characterized

in that after inserting the preform (16) in the second

Tool (W2) of the first section (14.1) by means of a Umbugvorrichtung (50) towards the second section (14.2) by deforming the plastic

Deforming portion (16) is pivoted.

6. The method according to claim 5, characterized in that after the removal of the preform (10) from the first tool (W1) of the second portion (14.2) and / or the deformation portion (16) by a holding device (44b) are supported, so that the first section (14.1) under curvature of

Deformation section (16) is pivotable when in the region of the vacuum removal device (40.2), which is opposite to the first section to be pivoted (14.1), the negative pressure is reduced or an overpressure is generated, so that the first portion (14.1) under curvature the deformation section (16) is pivoted in such a way that the angular position of the first section (14.1) changes relative to the second section (14.2).

A method of bending an edge portion (12) of a preform (10) for the interior trim of vehicles, comprising the steps of: in a first tool (W1), tempering the preform (10) in sections such that it stretches across a width the preform (10) in a longitudinal direction of the preform (10) extending deformation portion (16) of the preform (10) has a plasticity temperature at which the deformation portion (16) is plastically deformable, wherein the strip-shaped deformation portion (16) between a first portion (14.1) forming edge portion (12) and one in the longitudinal direction of

Deformation section (16) extending second portion (14.2) of the

Preform (10) is arranged, which are tempered such that the first and second portion (14.1, 14.2) each having a temperature at which the first and the second portion (14.1, 14.2) are dimensionally stable, by means of a vacuum extraction device ( 40.3), the first

Swing arm (44.1) and a second pivot arm (44.2), which are connected to each other via a pivoting hinge (48) and each provided with a negative pressure holding device (44a) for generating a negative pressure, removal of the preform (10) from the first tool (W1), wherein by means of the vacuum holding device (44a), the first and the second portion (14.1, 14.2) is held by negative pressure, so that the Vorfoimling (16) from the first tool (W1) can be removed and from the

Holding the pivoting arms mechanically, wherein the deformation section (16) by means of a in the first and / or in the second pivot arm (44.1, 44.2) integrated temperature control device for heating (42a) is kept at plasticity temperature by means of the removal device (40.3) by pivoting the first and / or the second pivot arm (44.1, 44.2) pivoting the first section (14.1, 14.2) with curvature of the deformation section (16) along the Longitudinal direction of the preform (10), so that the angular position of the first portion (14.1) relative to the second portion (14.2) changes.

8. The method according to claim 7, characterized in that the pivoting of the first and second pivot arm (44.1, 44.2) towards the side of

Removal device (40.3), which is applied to the side of the removal device (40.3), where the preform is held by means of the vacuum holding device (44 a).

9. The method according to any one of the preceding claims, characterized

characterized in that the preform (10) after deforming the

Deformation portion (16) is cooled from the plasticity temperature to a temperature at which the deformation portion (16) is dimensionally stable.

10. The method according to any one of the preceding claims, characterized

characterized in that, after forming the edge portion (12), pressing of the shaped edge portion (12) is performed with portions of the deformation portion (16) and / or the first and second portions (14.1, 14.2).

11. removal device (40.1, 40.2, 40.3) with a tempering device (42) for transferring a preform (10) with a strip-shaped over a width of the preform (10) in its longitudinal direction extending deformation portion (16) which heats to a plasticity temperature or is kept warm, wherein the deformation portion (16) is plastically deformable, wherein the strip-shaped

Deformation section (16) between a first portion (14.1) forming edge portion (12) and in the longitudinal direction of the deformation portion (16) extending second portion (14.2) of the preform (10) is arranged, from a first tool (W1) in a second tool (W2), wherein the Temperature control device (42) is configured such that the removal device (40, 40.1, 40.2, 40.3) can heat or keep at least one deformation section (16) of the preform to a plasticity temperature (16), wherein the

12. removal device (40.1, 40.2, 40.3) according to claim 11, characterized

in that the tempering device (42) is configured in such a way that it can heat or keep warm by means of heat convection and / or heat radiation in a deformation section (16) of the preform located in a convection region and / or a radiation region.

13. A removal device (40.1) according to claim 11, characterized in that the removal device (40.1) is designed like a pliers, such that the first section (14.1) of gripping jaws of the pliers-like

Removal device (40.1) can be taken.

14. A removal device (40.1) according to claim 13, characterized in that at the first portion (14.1) of the preform (10) facing portions of the jaw of the removal device (40.1) a tempering device for cooling (42b) of the first portion (14.1) of Preform (10) is provided, wherein the deforming portion (16) facing portion of the jaw of the

Removal device (40.1) with a tempering device for heating (42c) of the deformation section (16) is provided.

15. A removal device (40.2, 40.3) according to any one of claims 1 1 to 12, characterized in that the removal device (40.2, 40.3) is a vacuum extraction device (40.2, 40.3), which is provided with a holding device (44) is formed as a suction device (44a), which can hold the n first and second sections (14.1, 14.2) of the preform (10) by means of negative pressure.

16. A sampling device (40.3) according to claim 15, characterized in that the vacuum extraction device (40.3) is provided with a pivoting hinge (48) on which in each case a first pivot arm (44.1) and a second

Swivel arm (44.2) is mounted such that the first pivot arm (44.1) to the second pivot arm (44.2) is pivotable, wherein the first pivot arm (44.1) for holding the first portion (14.1) of the preform (10) and the second

Swivel arm (44.2) for holding the second portion (14.2) of the preform (10) are formed such that the deformation portion (16) of the preform (10) relative to the pivoting hinge (48) is arranged.

17, removal device (40.2, 40.3) according to claim 15 or 16, characterized in that the holding device (44) has a mechanical support (44b), which can support the preform (10) at least partially mechanically.

18. An apparatus for producing decorative parts (110) for the inner lining of a vehicle with a bent edge portion (12) of a preform (10) for the decorative part (1 10), comprising: a gripping device (40) having the features of one of claims 9 to 13 a feeding device (46) coupled to the gripping device (40) for moving the gripping device between a first tool (W1) and a second tool (W2).