EP2573291A1 - Thin-walled cold-formed lightweight structural profile element and method for producing such a profile element - Google Patents

Abstract

The element (1) has a profile body (2) made of metal or plastic in which openings (5) are formed. The body has two separately constructed longitudinal sections with respective longitudinal edges. Each section has an elongated section and connecting sections projected over the elongated section. A set of reinforcing beads runs in a longitudinal direction of the longitudinal sections. Another set of reinforcing beads running transversely to the former set of beads are connected to the former set of beads. The latter set of beads is extended into the connecting sections. An independent claim is also included for a method for producing a thin-walled, cold-formed lightweight profile element.

Description

The present invention relates to a thin-walled cold-formed lightweight profile element according to the preamble of claim 1. Furthermore, the invention is directed to a method for producing such a thin-walled cold-formed profile element.

Thin-walled cold-formed profile elements of this type are used, for example, as C-shaped stand profiles for drywall, the openings provided in the profile body of the profile element can serve, for example, as passage openings for cables, lines or other elongated, band or cord-shaped elements and pipes or other hollow body , Furthermore, these openings can also serve for ventilation or allow the penetration of fillers such as insulation material.

In known thin-walled cold-formed profile elements, these openings are introduced, for example by a punching operation. The disadvantage of this is that the punched material forms rejects, whereby the production costs for such thin-walled cold-formed profile elements are increased.

A profile element of the type mentioned is from the FR 2 301 653 known. In this document, a carrier profile is described, which consists of an overhead hollow profile with obliquely downwardly merging side walls and a subsequent to this T-profile consists. The two sloping side walls converge to a common point and are there welded to the upwardly projecting flat base part of the T-profile.

It is an object of the present invention to provide a thin-walled cold-formed profile element of the type mentioned, which is simple and inexpensive and can be produced with reduced material costs, with respect to the known profile elements widening of the profile body while maintaining the rigidity is to be achieved. Furthermore, a method for producing such a thin-walled cold-formed profile element is to be specified.

Starting from a thin-walled cold-formed profile element of the type mentioned above, the profile element concerned task is solved by the features of claim 1.

The part of the object relating to the method is achieved according to the invention on the basis of a method of the aforementioned type by the features of claim 16.

According to the invention, the connecting sections of the one longitudinal section are connected to the connecting sections of the other longitudinal section via an intermediate element arranged between the longitudinal sections, so that there is an indirect connection between the connecting sections. According to the invention, the intermediate element is designed as an elongated, strip-shaped element. Advantageously, the connection between the connecting elements and the intermediate element can be done shock to impact or overlapping. In particular, the intermediate element may have a thickness which is the same size as the thickness of the longitudinal sections.

According to the invention, therefore, no rejects are generated for producing the openings of the profile body, so that material can be saved, for example, by means of a punching action. In other words, a wider configuration of the profile element is achieved by the moving apart of two separately formed longitudinal sections with the same amount of material. By each laterally beyond the elongated portions of the two longitudinal sections projecting connecting portions, it is possible to move apart the longitudinal sections so transversely to their longitudinal sections, that despite this movement apart a connection of the two longitudinal sections is possible, so that ultimately a greater width than the width of the original Material section is achieved. The term "transverse" is understood to mean any direction that does not extend exclusively in the longitudinal direction of the profile element or its longitudinal sections. In particular, the term "transverse" can thus mean perpendicularly but also obliquely to the longitudinal extension of the profile element or of the longitudinal sections. Advantageously, the connecting sections are welded together in abutment or joined together along bent abutting edges, so that there are no large overlapping areas, but essentially edge connections between the two longitudinal sections. This also ensures optimal material utilization. Advantageous, interconnected stiffening beads ensures in an optimal manner that targeted to the weakened by the openings areas of the profile element stiffening, so that the stiffness of the profile element is equivalent to known profile elements or even improved over these. In particular, the torsion and the deflection stiffness of a profile element designed according to the invention can be increased by the stiffening beads.

Furthermore, a method is described in which at least two separate longitudinal sections each having a meandering longitudinal edge are provided for producing the profile body, wherein the longitudinal sections each comprise an elongated section and a plurality of laterally projecting beyond the elongate section connecting portions extending from the meandering Longitudinal edge are bordered that the longitudinal portions are arranged so that they lie flat against each other and abutting longitudinally connecting edges of the connecting portions of a longitudinal portion directly to longitudinally extending connecting edges of the connecting portions of the other longitudinal portion that the connecting portions of a longitudinal portion with the connecting portions of connected to another longitudinal section, in particular welded, that one of the two longitudinal sections with respect to the other longitudinal section s o is pivoted about the connecting edges, that the connecting portions along bent abutting edges are interconnected and between portions of the meandering longitudinal edges, the openings are formed, and that in the longitudinal sections in the longitudinal direction of the longitudinal sections extending stiffening beads and transversely extending stiffening beads are formed, wherein the transverse Stiffening beads are in communication with the longitudinal stiffening beads, and the transverse stiffening beads extend into the connecting portions.

According to an advantageous embodiment of the invention, the connecting portions of the two longitudinal sections each comprise connecting edges or bent abutting edges, which face each other and extend substantially parallel to each other. Over these connecting edges or bent abutting edges, the longitudinal sections can ultimately indirectly connected. The connecting edges preferably extend substantially parallel, perpendicular or obliquely, for example at a 45 ° angle, and the bent-over abutting edges parallel to the longitudinal extent of the longitudinal sections.

According to a further advantageous embodiment of the invention, the connecting portions are T-shaped, web-shaped, trapezoidal or triangular or comprise hexagonal areas. By appropriate design of the connecting portions predetermined properties of the profile element, such as its stiffness can be influenced. Furthermore, in each case a different type of connection of the two longitudinal sections is possible depending on the selected shape of the connecting portions, as will be described in more detail in this application.

In each case, a connecting section of the one longitudinal section preferably faces a connecting section of the other longitudinal section. Alternatively or additionally, connecting sections may also be provided which are arranged alternately in the longitudinal direction of the profile element. The arrangement of the connecting sections in the final profile element in turn depends on different types of connection, which will also be described below.

Advantageously, the longitudinal sections have a thickness of approximately between 0.5 mm and 3 mm. The profile elements according to the invention are thus lightweight profiles which can be used in different ways. For example, in addition to the uses mentioned above, applications in the automotive sector, in control cabinet construction, in ceiling systems or even as vine supports or vine posts are conceivable.

Advantageously, the welded joint between the connecting sections and the longitudinal edges of the strip-shaped intermediate element is formed as a broken laser weld. By training as a laser weld better strength in particular weakened by the openings middle region of the profile element is achieved. Compared to a conventional welded joint, the laser weld seam can be formed with a reduced in the transverse direction expansion. Due to the low expansion and the resulting heat concentration in a small space a very high hardness is achieved in the melted in the laser welding zone of the profile element after cooling. In addition, by laser welding, the seam can be generated exactly in the middle between the joint abutting joint edges and the longitudinal edges of the strip-shaped intermediate element, so that the subsequent areas of the profile element are not affected by the welding process and beyond a very smooth transition between the two longitudinal sections and the intermediate element is achieved.

According to a further advantageous embodiment, at least a part of the stiffening beads extends over the weld seams between the connecting sections and the intermediate element. As a result, an additional reinforcement of the welded joints is achieved.

Preferably, a longitudinally extending stiffening bead formed in a longitudinal section is connected via one or more of the transverse stiffening beads to a longitudinally extending stiffening bead formed in the other longitudinal section. The stiffening beads can thereby form a kind of conductor structure, by which in particular the openings are completely enclosed. Thereby the rigidity of the profile element is increased voltage optimized just in the weakened by the openings areas.

Advantageously, the longitudinally extending stiffening beads extend over the entire length of the respective longitudinal section. As a result, the improved rigidity can be achieved uniformly over the entire length of the profile element. In principle, it is also possible that the stiffening beads extending in the longitudinal direction are interrupted once or several times, as long as the desired stiffness is maintained.

In particular, the material surrounding the openings of the profile body may be deep-drawn. As a result, an increased rigidity of the profile element is again achieved, especially in the weakened region of the openings. Advantageously, the edges of the profile body bordering the openings can be bent, in particular formed as flanged edges.

According to a further advantageous embodiment of the invention, the intermediate element has substantially parallel to the longitudinal extent of the longitudinal sections extending longitudinal edges. As a result, a simple connection of the connecting edges of the connecting elements with the longitudinal edges of the intermediate element is possible.

The connecting sections are preferably connected to the intermediate element by a pressure joining method such as clinching or crimping, by jamming, crimping, pressing, welding, screwing, gluing, riveting or folding or by a plug connection. In particular, the welded connection can again be formed advantageously as a laser welding connection with the advantages mentioned.

Also, the intermediate element may advantageously have a thickness of about 0.5 mm and 3 mm.

According to a further advantageous embodiment of the invention, the intermediate element may be made of a different material than the longitudinal sections. In particular, the intermediate element made of plastic, in particular of PVC, and the longitudinal sections of metal, in particular of aluminum, exist. By using plastic on the one hand, the weight of the overall profile can be further reduced and on the other hand, a good thermal insulation is possible. Furthermore, the cost can be reduced by the use of plastic.

The separate longitudinal sections can already be produced originally from separate material sections. These may for example have the same or different thicknesses and consist of the same or different materials.

Advantageously, the separate longitudinal sections can be produced from an originally uniform material section. In this case, at least one meander-shaped slot extending in the longitudinal extent of the starting material can be introduced into an elongated strip-shaped starting material, by means of which the starting material is divided into the two separate longitudinal sections. It is also possible that at least two strip-shaped material sections are laid flat on one another and in a cutting process a meandering slot passing through both material sections is introduced, so that at least four longitudinal sections are produced in one cutting operation. Of these, for example, two can each be connected to a profile body.

Advantageously, the longitudinal sections are moved apart substantially perpendicular to their longitudinal extent. In principle, however, a movement apart obliquely to the longitudinal extent of the longitudinal sections is conceivable.

While in principle, in particular depending on the shape of the connecting portions, the joining of the longitudinal sections can take place immediately after the longitudinal sections apart transversely to their longitudinal extent, according to a further embodiment of the invention, in addition to the moving apart of the longitudinal sections transversely to their longitudinal extent substantially be moved against each other in the longitudinal direction. This longitudinal displacement of the longitudinal sections can take place before, after or simultaneously with the moving apart of the longitudinal sections transversely to their longitudinal extent. Such longitudinal displacement may be required, for example, to bring the connecting edges of two opposite connecting portions into contact, so as to allow a connection of the connecting portions of the two opposite longitudinal sections.

According to the invention, the longitudinal sections are moved apart transversely to their longitudinal extension, until a distance between the longitudinal sections arises between the spaced longitudinal sections, an elongated, strip-shaped intermediate element with two longitudinal edges placed and the connecting portions of a longitudinal section with the one longitudinal edge and the connecting portions of the other longitudinal section with the other longitudinal edge of the strip-shaped intermediate element, in particular butt joint or overlapping connected. On This way even larger widths of the profile element can be achieved.

Fig. 1

eine schematische Perspektivdarstellung eines Profilelements,

Fig. 2 bis 4

ein Schnittmuster und verschiedene Zwischenschritte für die Herstellung eines Profilelements gemäß Fig. 1,

Fig. 5

einen Materialabschnitt mit einem Schnittmuster zur Erzeugung eines weiteren Profilelements,

Fig. 6 und 7

zwei unterschiedliche Profilelemente basierend auf dem Schnittmuster nach Fig. 5,

Fig. 8 und 9

zwei Zwischenzustände zur Erzeugung eines Profilelements basierend auf dem in Fig. 2 dargestellten Schnittmuster,

Fig. 10

eine Ausführungsform der Erfindung,

Fig. 11

eine Teilansicht der Erfindung,

Fig. 12

ein weiteres Profilelement,

Fig. 13

eins weiteres Profilelement

Fig. 14

ein weiteres Profilelement,

Fig. 15

ein weiteres Profilelement,

Fig. 16

ein weiteres Profilelement,

Fig. 17

die Profilelemente nach den Fig. 12 und 14 bei einer Regalkonstruktion,

Fig. 18

eine weitere Ausführungsform der Erfindung,

Fig. 19.

eine weitere Ausführungsform der Erfindung,

Fig. 20

weitere mögliche Schnittmuster,

Fig. 21

eine perspektivische Darstellung von zwei aufeinander liegenden Materialabschnitte zum Herstellen eines Profilelements,

Fig. 22

einen Zwischenschritt bei der Herstellung des Profilelements und

Fig. 23

das Profilelement nach dem Aufklappen der beiden Längsabschnitte.

The invention will be described in more detail below by means of embodiments with reference to the drawings; in these show:

Fig. 1

a schematic perspective view of a profile element,

Fig. 2 to 4

a pattern and various intermediate steps for the production of a profile element according to Fig. 1 .

Fig. 5

a material section with a pattern for producing a further profile element,

6 and 7

two different profile elements based on the pattern after Fig. 5 .

8 and 9

two intermediate states for generating a profile element based on the in Fig. 2 illustrated pattern,

Fig. 10

an embodiment of the invention,

Fig. 11

a partial view of the invention,

Fig. 12

another profile element,

Fig. 13

another profile element

Fig. 14

another profile element,

Fig. 15

another profile element,

Fig. 16

another profile element,

Fig. 17

the profile elements after the Fig. 12 and 14 in a shelf construction,

Fig. 18

a further embodiment of the invention,

Fig. 19.

a further embodiment of the invention,

Fig. 20

other possible patterns,

Fig. 21

a perspective view of two superimposed material sections for producing a profile element,

Fig. 22

an intermediate step in the manufacture of the profile element and

Fig. 23

the profile element after unfolding the two longitudinal sections.

Fig. 1 shows a profile element 1, which is designed as a C-profile. The profile element 1 comprises a profile body 2, which has a profile web 3 and two laterally adjoining profile leg 4, which are each angled at right angles to the profile web 3. The free longitudinal edges of the profile legs 4 are each in turn about 90 ° to form angled from the C profile. In principle, the profile element 1 according to the invention can also be designed, for example, as U-profile, L-profile, T-profile, H-profile, top-hat profile or Z-profile.

In the profile web 3, a plurality of openings 5 is formed, which can serve for example as through holes for cables or other elements to be laid.

The openings 5 of the profile element 1 are produced according to the invention without loss of material, as described below with reference to the Fig. 2 to 4 is explained in more detail.

Fig. 2 shows a strip of material 6, for example, a metal strip, which serves as a starting material for the profile body 2. While in the Fig. 2 to 4 in each case only a relatively narrow region of the material strip 6 is shown, which is ultimately used to form the profile web 3, at the outer edges 7, 8 each further material areas adjoin, for example, the profile legs 4 are formed by corresponding bending.

In the material strip 6, a meandering slot 9 extending in the longitudinal extent of the material strip 6 is formed, through which the material strip 6 and thus the profile body 2 is divided into two separate longitudinal sections 10, 11. Through the meander-shaped slot 9, the longitudinal sections 10, 11 each receive a meandering longitudinal edge 12, 13, which in the illustration in accordance with Fig. 2 fit seamlessly together. The meandering longitudinal edges 12, 13 each comprise longitudinally extending and perpendicularly extending edge portions. By the meandering longitudinal edges 12, 13 respectively web-shaped connecting portions 14, 15 of the longitudinal sections 10, 11 are formed, which are each integrally connected to elongate sections 16, 17 of the longitudinal sections 10, 11 and laterally project beyond this. How to continue Fig. 2 can be seen, the web-shaped connecting portions 14 are bounded by the meandering longitudinal edge 12 and the web-shaped connecting portions 15 of the meandering longitudinal edge 13.

To produce the final shape of the profile web 3, the two longitudinal sections 10, 11 according to two arrows 18, 19 are pulled apart transversely to the longitudinal extent of the strip of material 6 until they are in Fig. 3 occupy the position shown. In this position are in the longitudinal direction of the longitudinal sections 10, 11 extending connecting edges 20, 21 of the connecting portions 14, 15 on a dashed line shown straight line 22, which also extends in the longitudinal direction of the longitudinal sections 10, 11.

According to Fig. 4 are in a next step, the two longitudinal sections 10, 11 according to arrows 25, 26 in the longitudinal direction of the longitudinal sections 10, 11 against each other, until each connecting section 14 a connecting portion 15 is opposite. Accordingly, in each case a connecting edge 20 abuts against a connecting edge 21 in this position, as shown in FIG Fig. 4 is shown.

Subsequently, the longitudinal sections 10, 11 along the abutting joint edges 20, 21 are welded together, for example, laser welded, whereby the final shape of the profile web 3 is achieved with the openings 5.

For better clarity, the description of the further embodiments for the same or similar elements in the following, the same reference numerals as in the Fig. 1 to 4 used

The embodiment according to Fig. 5 differs from the embodiment described so far only in that 9 T-shaped connecting portions 23, 24 are formed by the meandering slot.

In order to produce the final shape of the profile web 3, the two longitudinal sections 10, 11 according to the arrows 18, 19 are in this embodiment again pulled apart transversely to its longitudinal extent, as in Fig. 6 is shown. In this state, the connecting edges 20, 21 of the T-shaped connecting portions 23, 24 are again in line and can be welded, for example laser-welded, to form the profile web 3 and the openings 5 along the connecting edges 20, 21. In contrast to the first embodiment, the openings 5 are not arranged in the longitudinal direction one behind the other in this embodiment, but alternately, as it is made Fig. 6 is recognizable. Due to the T-shaped design of the connecting portions 23, 24, the connecting edges 20, 21 are already at least partially abutting one another after being pulled apart transversely to the longitudinal direction of the longitudinal sections 10, 11, so that the described connection can already be made in this state.

However, it is also possible that in a further method step, the longitudinal sections 10, 11 are additionally displaced in the longitudinal direction according to arrows 25, 26 until they are in Fig. 7 reach shown positions. In this position, the connecting edges 20, 21 are completely against each other and can be welded together to produce the profile web 3, For example, be laser welded. In this variant, the openings 5 are again arranged lying one behind the other in the longitudinal direction and have an H-shaped configuration formed by the meandering longitudinal edges 12, 13. In principle, it is also possible that initially the two longitudinal sections 10, 11 are displaced in the longitudinal direction and then transversely to the longitudinal direction against each other until the in Fig. 7 shown position is reached. An oblique shift is also possible.

In a further embodiment, the longitudinal sections 10, 11 of the FIGS. 2 and 3 continue to be pulled apart according to the arrows 18, 19 until they reach the in Fig. 8 reach shown positions in which they are spaced from each other. In this state, an additional intermediate element 27 in the form of an elongated strip-shaped element between the two longitudinal sections 10, 11 are used, as in Fig. 9 is shown. The intermediate element 27 has parallel to the longitudinal extent of the longitudinal sections 10, 11 extending longitudinal edges 28, 29, which abut against the connecting edges 20, 21 of the connecting portions 14, 15, as is apparent from Fig. 9 can be seen. To produce the final shape of the profile web 3, the connecting edges 20, 21 are then connected to the longitudinal edges 28, 29 of the intermediate element 27, for example, welded. At the same time thereby the openings 5 are formed, which in turn are arranged alternately in the longitudinal direction of the profile web 3.

In a similar way as already Fig. 7 described, also in this embodiment, the longitudinal sections 10, 11 in turn according to the arrows 25, 26 additionally displaced in the longitudinal direction against each other until they are in Fig. 10 reach shown positions. In this position, each of the connecting portions 14, 15 of the longitudinal sections 10, 11 facing each other, while in the embodiment according to Fig. 9 are arranged alternately in the longitudinal direction of the profile web.

Subsequently, the connecting edges 20, 21 of the connecting portions 14, 15 connected to the longitudinal edges 28, 29 of the intermediate member 27, for example, welded, so that the final shape of the profile element 3 and the openings 5 are formed.

While in the Fig. 8 to 10 the connection of the longitudinal sections 10, 11 via the intermediate element 27 has been described in each case with reference to longitudinal sections 10, 11 with web-shaped connecting portions 14, 15, the connecting portions may also be another suitable form, for example, the T-shaped configuration of the connecting portions 23, 24 of the Fig. 5 to 7 have. Furthermore, in all embodiments, the connection between the connecting portions 14, 15 and 23, 24 has been described with the intermediate element 27 as a compound whose edges 20, 21 and 28, 29. Basically, however, it is also possible that the connecting portions overlap with the intermediate element and corresponding surface connections between these elements, for example by Druckfügeverfahren as Verclinchen or crimping, by jamming, crimping, pressing, welding, screwing, gluing, riveting or folding or by a Plug connection are generated.

Exemplary is in Fig. 11 a corresponding planar seam connection between the web 27 and the connecting portions 14 cut in a detail view shown.

According to the invention, stiffening beads 30 are formed in the material section 6, as they are only in FIG Fig. 10 are shown. These stiffening beads 30 are formed in the connecting portions or extend into this. By a profile transverse to the longitudinal direction of the profile web 3, an advantageous stiffening is achieved. Also in the region of the longitudinal edges 7, 8 corresponding stiffening beads 31 extending in the longitudinal direction of the material section 6 are formed, which are in connection with the stiffening beads 30, as shown in FIG Fig. 10 is shown. The stiffening beads 30 may extend from a longitudinally extending stiffening bead 31 to the opposite stiffening bead 31, so that they are connected to each other and the openings 5 are completely enclosed by stiffening beads as in Fig. 4 as well as at the bottom of the Fig. 10 indicated by dashed lines. The stiffening beads 31 extend over the welds, in order to additionally strengthen them. Corresponding stiffening beads are provided in all embodiments, even if they are not explicitly shown.

The intermediate element 27 may be formed over the entire surface or comprise openings, not shown. These openings can be achieved for example by punching. Advantageously, the intermediate element 27 can also be provided and widened by means of a corresponding stretching method with openings. In addition, in the intermediate element 27 also stiffening elements, for example in the form of embossments or stiffening beads may be formed.

The embodiment according to Fig. 12 differs from the embodiment according to the Fig. 2 to 4 in that the two longitudinal sections 10, 11 are pulled apart from one another transversely to the longitudinal extension of the strip of material 6 only to the extent that the connecting sections 14, 15 still engage in one another like a comb, as shown in FIG Fig. 12 is shown. In this position, the abutting edges form abutting edges the connecting portions 14, 15, the connecting edges 20, 21, which are butt welded together.

Fig. 13 shows a profile element formed as a base profile, in which two outer longitudinal sections 32 are fitted together with a strip-shaped intermediate element 33 arranged therebetween. The intermediate element 33 has a single-layer central region 34, adjoined by two double-layered outer regions 35. These are U-shaped in cross section and form receptacles 36 for the connecting portions 55 of the longitudinal sections 32, in which they can be inserted and clamped. The longitudinal sections 32 may be formed of metal, in particular of aluminum, while the intermediate element 33 may preferably be formed of plastic and in particular as an injection molded part or as a continuously extruded profile.

According to the embodiment Fig. 14 the connecting portions are formed as hexagonal connecting portions 37, 38. The hexagonal connecting sections 37, 38 each comprise a hexagonal area 39 and a trapezoidal area 40 adjoining thereto, which is connected to the elongated section 16 or 17, respectively. The connecting edges 20, 21 are formed as oblique cascades of the hexagonal areas 39 and run in particular at a 45 ° angle to the longitudinal extent of the material strip 6. The connecting edges 20, 21 and adjoining edges 41 of the hexagonal areas 39 each close an angle of 90 °, so that corresponding angles α, β of the openings 5 are formed as 90 ° angle.

The connecting edges 20, 21 abut each other abutting each other and are, analogous to the embodiment according to Fig. 12 , butt welded together, especially laser welded.

According to the embodiment Fig. 15 the connecting portions are formed as triangular connecting portions 45, 46. To form the triangular connecting sections 45, 46, a sawtooth-shaped slot is made in the material strip 6, through which the meandering longitudinal edges 12, 13 are formed. Subsequently, the two longitudinal sections 10, 11 according to two arrows 49, 50 are pulled apart at an angle to the longitudinal extent of the material strip 6. The direction of movement of the two longitudinal sections 10, 11 in this case runs essentially parallel to two flanks 51, 52 of the meandering longitudinal edges 12, 13. The two longitudinal sections 10, 11 are pulled apart only to the extent that the flanks 51, 52 still partially touch, whereby the connecting edges 20, 21 are formed. These, in turn, can be like that Fig. 12 and 13 described, welded together butt.

This in Fig. 16 shown embodiment again comprises trapezoidal connecting portions 47, 48, which are each connected with their long base side with the elongated portions 16, 17. The two longitudinal sections 10, 11 are, similar to the Fig. 15 described, according to two arrows 53, 54 obliquely to the longitudinal extent of the strip of material 6 and substantially parallel to the legs of the trapezoidal portions 47, 48 pulled apart to the in Fig. 16 reach the position shown. In this position, the legs of the trapezoidal sections 47, 48 still partially in connection, whereby the connecting edges 20, 21 are formed. These can turn, how to the Fig. 12 and 13 described, welded together butt.

Fig. 17 shows the skeleton of a shelf 42, in which the vertical support 43 are formed by profiles, according to the embodiment of Fig. 12 are formed. By contrast, the horizontal supports 44 are exemplary according to the exemplary embodiment Fig. 14 educated. This is at the top of each Fig. 17 shown schematically. Of course, both the horizontal and the vertical support 43, 44 may be formed according to another embodiment described in the application.

In Fig. 18 schematically shows that the openings 5 may be formed not only in the profile web 3, but alternatively or additionally in one or both profile legs 4. Furthermore, in Fig. 19 schematically shown that the openings 5 can also extend from the profile web 3 on the outer edges 7, 8 in the profile leg 4 in. In addition, 5 may also be provided completely in the profile web 3 and / or in one or both profile legs 4 arranged openings. These different arrangements of the openings 5 can be provided in all embodiments of the invention.

Fig. 20 shows a variety of other possible embodiments of the invention. Shown in each case are material strips 6 into which meander-shaped slots of most different shape have been introduced, the two longitudinal sections of the material strip 6 then being pulled apart transversely to the longitudinal extent of the material strip 6 and in some cases additionally displaced against one another in the longitudinal direction. The resulting openings 5 are each hatched. In all embodiments are by sections the meandering longitudinal edges connecting edges 20, 21 formed, which are each shown in bold for clarity. About the connecting edges 21, 21, the two longitudinal sections 10, 11 are each butt welded together, as already explained to the embodiments described above. The openings 5 may have, for example, diamond-shaped, flag-shaped, octagonal or the other represented geometric shapes. As shown, depending on the shape, the two longitudinal sections 10, 11 transverse to their longitudinal extent, in the direction of disengagement, undercuts form, which additionally reinforce the connection between the longitudinal sections 10, 11.

In Fig. 21 two substantially equal thickness, flat strips of material 6, 6 'are arranged so that they lie flat on each other. In both strips of material 6, 6 ', a uniform meander-shaped slot 9 was introduced, through which the strips of material 6, 6' in two longitudinal sections 10, 11 and 10 ', 11' are shared. In contrast to the previously described embodiments, the profile element 1 is not formed by the originally contiguous longitudinal sections 10, 11 and 10 ', 11' in this embodiment, but it is formed two profile elements, one of the longitudinal sections 10, 10 'and the other consists of the longitudinal sections 11, 11 '.

For this purpose, after generating the meandering slot 9, the superimposed longitudinal sections 10, 10 'are separated from the respective other longitudinal sections 11, 11' in order to form together mutually independent profile elements.

In the FIGS. 22 and 23 is an example of the production of the profile element 1 with the longitudinal sections 11, 11 'shown. The superimposed Longitudinal sections 11, 11 'are welded together at longitudinally extending connecting edges 57, so that along the end faces 58 of the connecting edges 57 extending welds 59 are generated. Subsequently, the longitudinal sections 11, 11 'are unfolded, as in Fig. 22 indicated by an arrow 60. For this purpose, for example, the longitudinal portion 11 is pivoted about the connecting edges 57 according to the arrow 60 by approximately 180 ° until it the in Fig. 23 shown position occupies. In this position, the longitudinal sections 11, 11 'lie substantially in a common plane.

By pivoting the interconnected connecting edges 57 are bent so that they form bent abutting edges 56, via which the longitudinal sections 11, 11 'are connected to each other in shock. At the same time, the openings 5 are formed by the pivoting between sections of the meandering longitudinal edges 12, 13, without this being associated with material loss.

In principle, the connection between the bent abutting edges 56 can also be produced by other types of connection, such as overlap welding, folding, gluing, clinching, riveting or stapling. In addition, the pivoting of the longitudinal sections can also take place at a different angle of 180 °, in particular smaller or larger, depending on which shape is to receive the final profile element. Although the production of the profile element by unfolding was explicitly described only in conjunction with the web-shaped connecting portions 14, 15, however, this production is also possible with the other connection sections described in the context of this application, as long as the connecting edges to be joined extend in the longitudinal direction of the material strip.

LIST OF REFERENCE NUMBERS

1

profile element

2

profile body

3

profile web

4

profile leg

5

openings

6, 6 '

strips of material

7

outer edge

8th

outer edge

9

meandering slot

10, 10 '

longitudinal section

11, 11 '

longitudinal section

12

meandering longitudinal edge

13

meandering longitudinal edge

14

web-shaped connecting sections

15

web-shaped connecting sections

16

long stretched sections

17

long stretched sections

18

arrow

19

arrow

20

connecting edges

21

connecting edges

22

line

23

T-shaped connecting sections

24

T-shaped connecting sections

25

arrow

26

arrow

27

intermediate element

28

longitudinal edge

29

longitudinal edge

30

reinforcing beads

31

reinforcing beads

32

longitudinal sections

33

intermediate element

34

the central region

35

exteriors

36

lines

37

hexagonal connecting sections

38

hexagonal connecting sections

39

hexagonal areas

40

trapezoidal areas

41

edge

42

shelf

43

vertical beams

44

horizontal beams

45

triangular connecting sections

46

triangular connecting sections

47

trapezoidal connecting sections

48

trapezoidal connecting sections

49

arrow

50

arrow

51

flank

52

flank

53

arrow

54

arrow

55

connecting sections

56

bent edges

57

connecting edges

58

front sides

59

welds

60

arrow

Claims (20)

Thin-walled cold-formed lightweight construction element, in particular construction profile, for example drywall, facade, plaster, floor, screed, tile or cable carrier profile or shelf or drainage rail, with a particular metallic or plastic long elongated profile body (2), in the a plurality of openings (5) is formed,
wherein the profile body (2) comprises at least two separately formed longitudinal sections (10, 11),
each longitudinal section (10, 11) comprising a meander-shaped longitudinal edge (12, 13),
the longitudinal sections each having an elongated section (16, 17) and a plurality of laterally projecting beyond the elongated section (16, 17) connecting portions (14, 15, 23, 24, 37, 38, 45, 46, 47, 48) bounded by the meandering longitudinal edge (12, 13),
wherein the connecting portions (14, 23, 37, 45, 47) of the one longitudinal portion (10) facing the connecting portions (15, 24, 38, 46, 48) of the other longitudinal portion (11) and are connected thereto, and
wherein the openings (5) at least partially bounded by sections of the meandering longitudinal edges (12, 13), characterized
that for broadening the profile body (2) the connecting portions (14, 15, 23, 24, 37, 38, 45, 46, 47, 48, 55) are spaced transversely to the longitudinal extent of the longitudinal sections (10, 11) and
that in the distance between the connecting portions (14, 15, 23, 24, 37, 38, 45, 46, 47, 48, 55) is an elongated, strip-shaped Intermediate element (27) with two longitudinal edges (28, 29) is arranged, via which the connecting portions (14, 15, 23, 24, 37, 38, 45, 46, 47, 48, 55) of a longitudinal portion (10, 11) with the connecting portions (14, 15, 23, 24, 37, 38, 45, 46, 47, 48, 55) of the other longitudinal portion (10, 11) are connected by the connecting portions (14, 15, 23, 24, 37 , 38, 45, 46, 47, 48, 55) of the one longitudinal section (10, 11) having the one longitudinal edge (28, 29) and the connecting sections (14, 15, 23, 24, 37, 38, 45, 46, 47, 48, 55) of the other longitudinal section (10, 11) are connected to the other longitudinal edge (28, 29) of the strip-shaped intermediate element (27). Thin-wall cold-formed lightweight construction element according to claim 1,
characterized,
in that the connection between the connecting sections (14, 15, 23, 24, 37, 38, 45, 46, 47, 48) and the intermediate element (27) takes place abruptly or overlapping. Thin-walled cold-formed lightweight construction element according to claim 1 or 2,
characterized,
in that the longitudinal edges (28, 29) of the intermediate element (27) extend substantially parallel to the longitudinal extension of the longitudinal sections (10, 11). Thin-walled cold-formed lightweight building element element according to at least one of claims 1 to 3,
characterized,
in that the connecting sections (14, 15, 23, 24, 37, 38, 45, 46, 47, 48) are connected to the intermediate element (27) by a pressure joining method such as clinching or crimping, by jamming, crimping, pressing, welding, screwing, gluing, riveting or folding or a plug connection. Thin-walled cold-formed lightweight structural element according to at least one of the preceding claims,
characterized,
that the intermediate element (27) has a thickness of approximately between 0.5 mm and 3 mm
and or
in that the intermediate element (27) consists of a different material than the longitudinal sections (10, 11)
and or
in that the intermediate element (27) consists of plastic, in particular of PVC, and the longitudinal sections (10, 11) consist of metal, in particular of aluminum. Thin-walled cold-formed lightweight structural element according to at least one of the preceding claims,
characterized,
in that the connecting sections (14, 15, 23, 24, 37, 38, 45, 46, 47, 48) of the two longitudinal sections (10, 11) each comprise connecting edges (20, 21) which face each other and are substantially parallel to one another run, and in particular that the connecting edges (20, 21) extend substantially parallel, perpendicular or obliquely to the longitudinal extent of the longitudinal sections (10, 11). Thin-walled cold-formed lightweight structural element according to at least one of the preceding claims,
characterized,
in that the connecting sections (14, 15, 23, 24, 37, 38, 45, 46, 47, 48) are T-shaped, web-shaped, trapezoidal or triangular or comprise hexagonal sections. Thin-walled cold-formed lightweight structural element according to at least one of the preceding claims,
characterized,
in that in each case a connecting section (14, 15, 23, 24, 37, 38, 45, 46, 47, 48) of the one longitudinal section (10, 11) is connected to a connecting section (14, 15, 23, 24, 37, 38, 45, 46, 47, 48) of the other longitudinal section (10, 11) is opposite
or
that the connecting portions (14, 15, 23, 24, 37, 38, 45, 46, 47, 48) in the longitudinal direction of the profile element (1) are arranged alternately. Thin-walled cold-formed lightweight structural element according to at least one of the preceding claims,
characterized,
that the longitudinal portions (10, 11) have a thickness of about between 0.5 mm and 3 mm. Thin-walled cold-formed lightweight structural element according to at least one of the preceding claims,
characterized,
that the welded connection between the connecting portions (14, 15, 23, 24, 37, 38, 45, 46, 47, 48) and the respective longitudinal edge (28, 29) of the strip-shaped intermediate element (27) is designed as a broken laser weld. Thin-walled cold-formed lightweight structural element according to at least one of the preceding claims,
characterized,
in that stiffening beads (31) extending in the longitudinal sections (10, 11) in the longitudinal direction of the longitudinal sections (10, 11) and stiffening beads (30) extending transversely thereto are formed in such a way that the transversely extending stiffening beads (30) engage with the longitudinally extending stiffening beads (31 ) and that the transverse stiffening beads (30) extend into the connecting portions (14, 15, 23, 24, 37, 38, 45, 46, 47, 48). Thin-wall cold-formed lightweight construction element according to claim 11,
characterized,
in that at least some of the stiffening beads (30, 31) extend over the welds between the connecting sections (14, 15, 23, 24, 37, 38, 45, 46, 47, 48) and the longitudinal edges (28, 29) of the strip-shaped intermediate element (27) extends across. Thin-wall cold-formed lightweight building element element according to claim 11 or 12,
characterized,
in that a longitudinal stiffening bead (31) formed in a longitudinal section (10, 11) extends over one or more of the transverse stiffening beads (30) with one in the other Longitudinal section (10, 11) formed, extending in the longitudinal direction stiffening bead (31) is connected. Thin-walled cold-formed lightweight building element element according to at least one of claims 11 to 13,
characterized,
in that the stiffening beads (31) extending in the longitudinal direction extend over the entire length of the respective longitudinal section (10, 11) or are interrupted once or several times. Thin-walled cold-formed lightweight structural element according to at least one of the preceding claims,
characterized,
that the openings (5) is deep-drawn bounding material of the profile body (2)
and or
that the openings (5) bent bounding edges of the profile body (2), in particular as a flanged edges are. A method for producing a thin-walled cold-formed lightweight profile element, in particular a construction profile, such as drywall, facade, plaster, floor, screed, tile or cable carrier profile or a shelf or drainage rail, with a particular metallic or plastic long elongated profile body (2) in which a plurality of openings (5) is formed,
wherein two separate longitudinal sections (10, 11) each having a meandering longitudinal edge (12, 13) are provided for producing the profile body (2), the longitudinal sections (10, 11) each having an elongate section (16, 17) and a plurality from the side comprise connecting sections (14, 15, 23, 24, 37, 38, 45, 46, 47, 48) projecting beyond the elongate section (16, 17) and bounded by the meandering longitudinal edge (12, 13),
wherein the longitudinal sections (10, 11) are moved apart transversely to their longitudinal extension and
wherein the connecting portions (14, 23, 37, 45, 47) of the one longitudinal portion (10) are connected to the connecting portions (15, 24, 38, 46, 48) of the other longitudinal portion (11), that between portions of the meandering longitudinal edges (12, 13) the openings (5) are formed,
characterized,
in that in order to widen the profiled body (2) the longitudinal sections (10, 11) are moved apart transversely to their longitudinal extent until a distance between the connecting sections (10, 11) arises, that between the spaced connecting sections (10, 11) an elongated, strip-shaped intermediate element (27) having two longitudinal edges (28, 29) is placed and that the connecting portions (14, 15, 23, 24, 37, 38, 45, 46, 47, 48) of a longitudinal portion (10, 11) with the a longitudinal edge (28, 29) and the connecting portions (14, 15, 23, 24, 37, 38, 45, 46, 47, 48) of the other longitudinal portion (10, 11) with the other longitudinal edge (28, 29) of the strip-shaped Intermediate element (27), in particular butt joint or overlapping, are connected. Method according to claim 16,
characterized,
in that the connecting sections (14, 15, 23, 24, 37, 38, 45, 46, 47, 48) are joined to the intermediate element (27) by a pressure joining method such as clinching or crimping, by jamming, crimping, Pressing, welding, in particular laser welding, screwing, gluing, riveting or folding, or connected to one another by plugging together. Method according to claim 16 or 17,
characterized,
that the longitudinal sections (10, 11) are moved apart substantially perpendicular or obliquely to their longitudinal extent and / or
in that, in addition to the moving apart of the longitudinal sections (10, 11) transversely to their longitudinal extent, the longitudinal sections (10, 11) are displaced relative to one another substantially in the longitudinal direction
and or
that the longitudinal displacement of the longitudinal sections (10, 11) before, after or simultaneously with the moving apart of the longitudinal portions (10, 11) takes place transversely to its longitudinal extent. Method according to at least one of claims 16 to 18,
characterized,
in that at least one meander-shaped slot (9) extending in the longitudinal extent of the starting material (6) is introduced into at least one elongated strip-shaped starting material (6), by which the starting material (6) is divided into at least two separate longitudinal sections (10, 11). Method according to at least one of claims 16 to 19,
characterized,
that in the longitudinal sections (10, 11) in the longitudinal direction of the longitudinal sections (10, 11) extending stiffening beads (31) and transversely extending stiffening beads (30) are formed, wherein the transverse stiffening beads (30) with the longitudinally extending stiffening beads (31) are in communication, and the transverse stiffening beads (30) in the connecting portions (14, 15, 23, 24 , 37, 38, 45, 46, 47, 48) and in particular over the weld seams between the connecting sections (14, 15, 23, 24, 37, 38, 45, 46, 47, 48) and the longitudinal edges (28, 29 ) of the strip-shaped intermediate element (27) extend away.

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