DE2518442C3 - Composite component - Google Patents

Description

The invention relates to a composite component consisting of a thin-walled element with at least one the edge of the thin-walled element overlapping end profile, which is formed by a polyurethane integral foam by means of foaming In a known composite component of this type, the composite component consists of a sheet-like one Wall element, the outer circumference of which is surrounded by a frame that has been framed accordingly the use of the composite component as a furniture part,

Sash or the like. Is designed.

The disadvantage of such a use and formation of plastic foam is that the Flat wall element foamed edge is not able to withstand larger loads and thus in particular can not serve as a carrier for other components. The same applies to another known arrangement in which plate-shaped components made of chipboard or fibrous material either with an edge profile made of a polyurethane Integral foam are provided or where two Components are connected by a strip made of plastic.

The invention is accordingly based on the object of creating a composite component with which it is possible to use a polyurethane integral foam like that use that it can withstand greater loads and optionally as a carrier for other components can be used.

According to the invention, this object is achieved by

that the thin-walled element consists of asbestos cement and with one in the surface of the thin-walled Element lying and is provided by this cutout delimited on all sides, the edge termination

profile is designed as a circumferential inner frame, the the thin-walled element in cross section overlaps at least two adjacent sides.

With this arrangement it is achieved that by the Formation of a self-contained inner frame from the foam plastic of the frame in itself and on the made of asbestos cement thin-walled element is supported so that it can not break out. At the same time it is ensured by reaching around the cutout edges in the asbestos cement element that these edges are protected and in turn cannot break out. With the arrangement according to the invention So there is an advantageous interaction between the two different materials in the Achieved with regard to an increase in strength and an increase in resistance to breakage.

In this way it is achieved in particular that the inner frame made of plastic foam as Support element can serve for other components and this in particular also in the event of a pressure load. In this way, under certain circumstances, greater loads can be transferred than if in a more expensive manner Way the other components would be attached to the asbestos cement element directly.

In many cases it is sufficient if the The edge of the cutout in the thin-walled element is overlapped on two adjoining sides is, i.e. when a surface side of the thin-walled element is overlapped by the foam, the at the same time surrounds the perpendicular inner edge of the cutout in the thin-walled element. One Such foaming is particularly sufficient when the inner frame formed from the plastic foam Is exposed to compressive forces that are exerted from the surface side overlapped by the foam on the Composite component act.

When foaming around two perpendicularly adjoining sides, it can be advantageous if the edge of the cutout in the thin-walled element overlapped by the edge profile with it perpendicular to the plane of the element extending holes is provided in which the foam material entry. In this way, for a good anchoring of the edge profile even with only two-sided Foam is taken care of. This anchoring can of course also be used if three ropes connected to one another are foamed, d. H. even if the two opposite each other Areas of the thin-walled element are encompassed by the foam.

Advantageously, the edge profile can be used as a window frame within a cutout in a Be formed wall cladding panel. In this way a stable window frame is created that can be attached with little effort.

In particular, the screw connections required for the known assembly can be dispensed with, which are complex and expensive because the items are manufactured separately and with relatively expensive Assembly work must be carried out on the finished building. The same applies if the edge profile as a support ring for a roof attachment within a section of a thin-walled one Roof covering is formed. Here, too, despite the production of a stable carrier skirt, there is no need complex and sometimes dangerous assembly work on the roof.

In the production of such frames or support wreaths, it is particularly advantageous to Foam the connecting elements, such as hinges or bolts, as inserts, so that for the Attaching the connecting elements also does not require any special operations.

Devices have also become known for the production of end profiles from integral foam, which overlap the edge of a thin-walled element. Thereby tool halves with their one another

ίο facing cavities so to the thin-walled Element attached so that the wall edges facing away from the thin-walled element lie tightly on top of one another, while the wall edges overlapping the thin-walled element one, the thickness of the thin-walled one

is element have the appropriate distance and with are equipped with solid or elastic edges.

A tool that is particularly easy to manufacture for manufacturing the composite component according to the invention, which is particularly suitable for one-off production or tests, results when the tool is made with their cavities facing each other U-shaped rails, on the webs of the side over the U-profile rails protruding screw carriers are arranged, each two opposing each other and take up screws that meet one another with their ends. By turning against each other of the screws, the two tool parts can be detached from one another after the foaming process and the finished workpiece can be removed.

In order to ensure that the two tool parts consisting of the U-profile rails are positioned precisely, can in the area of superimposed! Edges of the U-profile rails on their legs be arranged plate-shaped guides, each of the legs of the opposite U-profile rail overlap.

The tool parts are given the shape that corresponds to the shape of the cutout in the thin-walled Element corresponds. To produce a frame or support skirt within the cutout in the thin-walled element, the tool has the corresponding circumferential shape, such as the shape of a Square or rectangular frame. The wall edges of the two tool parts are here within the cutout close together, while the outer wall edges are one of the strengths of the thin-walled element have a corresponding distance in the form of a circumferential gap.

In the case of tools for larger series, it is advantageous if a clamping device consisting of two clamping plates is provided, with one clamping plate being assigned to a tool part and the two Tool parts are each preferably connected to the associated clamping plate by means of screw connections are. This means that the two tool parts can both be guided by the two clamping plates against each other also against each other as well as by moving the clamping plates in the opposite direction separated from each other. In the case of a horizontal arrangement, the upper one will therefore lift off Tool part from the lower tool part possible without the lower tool part by adhesion of the Workpiece can follow the upper tool part. The movement of the clamping plates against and from each other can be carried out hydraulically in an advantageous manner.

Expediently, in the tool parts, displaceable evaluation units are arranged perpendicular to their stroke direction.

fer intended for the composite component. Here, at The ejector, which acts on the workpiece from above, is spring-loaded by a horizontally positioned tool so that when the overhead tool part is lifted, the ejector automatically goes into action and the workpiece does not stick to the upper part of the tool. If the Workpiece both on the upper tool part and on the lower tool part consists namely Danger of the workpiece when opening the tool gets destroyed.

Finally, on the walls of the tool parts, core pullers can be used to remove into the Cores inserted into the workpiece are arranged with corresponding channels in the walls of the Tool parts are connected. Such a core pull thus forms part of the tool and contains one that can be pushed into the mold cavity and retracted after the workpiece has been formed Core, for example to form undercuts in the workpiece.

The composite component can be provided with special surface designs. In particular, can in an advantageous manner to produce a structure in the surface of the edge profile on the Structural designs corresponding to the surfaces of the tool inner walls can be provided.

The invention is explained in more detail below with reference to exemplary embodiments in the drawing.

F i g. 1 shows a perspective view of a composite component in which a frame-shaped Edge termination profile provided for the inner edges of a cutout in a thin-walled element is;

F i g. 2 shows a perspective illustration of a corrugated roof panel provided with a cutout, with here the cutout is also provided with an edge profile:

F i g. 3 shows a perspective view of a corrugated roof panel similar to FIG. 2 with one on top of one Fan support arranged in the frame profile;

4 shows a corrugated roof panel similar to FIG a dome light arranged on a frame profile;

F i g. 5 is the section V-V according to FIG. 4;

F i g. 6 shows a perspective illustration of a simple tool for producing the composite component;

7 is roughly the section VII-VII through the tool according to FIG. 6 with the tool open and the workpiece finished;

F i g. 8 shows in section a tool for larger series production.

In Fig. 1 shows a composite component 1 which consists of a thin-walled element 2 with a rectangular cutout 3, the cutout 3 being provided with an edge profile 4. and consists of a polyurethane integral foam. It is foamed onto the thin-walled element 2. In the embodiment according to FIG. 1, the edge closure profile 4 can be, for example, a window frame, while the thin-walled element 2 can be a wall cladding panel. The thin-walled element 2 is a 6 $ asbestos cement board.

FIG. 2 shows another embodiment of the thin-walled element, which is designed here as a corrugated roof plate 5. A cutout 6 in the corrugated roof sheet 5 is provided with an edge profile in the form of a support ring 7 for components to be attached to the roof, the support ring 7 also made of integral polyurethane foam and foamed onto the edge area of the cutout 6.

F i g. 3 shows the corrugated roof panel 5 according to FIG. 2, here with a foamed support ring 8 for a Fan nozzle 9 is provided. Under certain conditions, other parts of the Fan nozzle 9 be foamed with and thus consist of polyurethane foam. Fasteners, which connect the fan nozzle 9 to the carrier ring 8 can be inserted into the carrier ring 8 as insert parts be foamed with.

In the embodiment according to FIG. 4, the corrugated roof sheet 5 is provided with a foamed-on support skirt 10 for a light dome 11 made of Plexiglas. The support ring 10 in the embodiment according to FIG. 4 protrudes relatively high over the corrugated roof plate 5 and in this respect forms part of the light dome. It thus not only fulfills the function of a pure edge profile for the cutout in the corrugated roof panel 5.

Fig. 5 is the section VV according to Fig.4 and shows that the support ring 10 consists of a section 10a which overlaps the edge of the cutout 12 in the corrugated roof plate 5, from a central section 10b, which forms a box-shaped housing and from an upper edge section 10c, which is the actual carrier for the dome light 11, screw-shaped connecting elements 13, which hold the dome light 11 and which can also be in the form of hinges or the like, can be foamed as insert parts in the upper edge section 10c . Furthermore, through appropriate form designs, for example the one in Fi g. 5 sealing grooves 14 shown, can be formed without additional operations during the foaming process.

F i g. 6 shows a perspective illustration of a simple tool for producing frame-shaped edge termination profiles, for example according to the embodiment according to FIG. 1. The tool according to FIG. 6 is particularly suitable for individual production or for test purposes. 6, the tool 15 shown there is designed as a two-part molding tool whose two mutually facing parts 16 and 17 have mutually facing cavities 18 and 19 (see FIG. 7), the opposite wall edges 20 and 21 (see FIG. 7 ) partially close to one another in the closed state, such as those in FIG. 7 and partially have a distance A from one another corresponding to the thickness of the thin-walled element 2 , so that the thin-walled element 2 can pass through to the outside.

In the embodiment of Figure 6, there is Tool made of U-profile rails 22 and 23 facing one another with their cavities 18 and 19 whose webs 24 are arranged laterally over the U-profile rails 22 and 23 protruding screw carrier 25 are, the two opposing and meeting with their ends screws 2C take up. Further screw carriers 25 with screw 26 are arranged on the inside of the tool

In the area of the overlapping edges dei U-profile rails 22 and 23 are on their legs Z.

(see. Fig. 7) plate-shaped guides 28 arranged, which each overlap the leg 27 of the opposite U-profile rail. Be that way the two tool parts 16 and 17 aligned with one another when placed. The screws 26 are used in the described way when turning against each other to open the tool and remove the finished workpiece. In Fig.6 there is also a Channel 29 is shown, which is used to connect a mixing head 30 known per se (cf. FIG. 7), with which the foam material into the interior of the cavities 18 and 19 with the tool closed is injected.

The tool parts 16 and 17 are spanni against each other with clamping devices (not shown), so that the casting can take place under pressure.

7 is the section VII-VII with the tool open and shows in particular that the outer legs of the U-profile rails 22 and 23 are shorter than the inner legs of the U-profile rails by the distance A corresponding to the thickness of the thin-walled element 2 according to FIG. 6 in the form of a circumferential gap 31. When the tool is closed, the inner wall edges 20 lie close to one another, while the outer wall edges have the described distance when the element 2 is not inserted. Both wall edges, but in particular the outer wall edges 21 impinging on the thin-walled element 2, can be provided with seals 32.

From Fig. 7 also shows that the thin-walled element 2 in its edge area with it bores 33 extending perpendicular to the plane of the element can be provided, in which at Foaming process, the foam material occurs in order to be particularly well anchored there. The attachment such bores is particularly useful when the thin-walled element 2 is only on one surface is overlapped by the polyurethane foam.

Fig.8 shows in section a device for Manufacture of larger series of composite components. The device according to Figure 8 also has two tool parts 16 and 17, which are solid. The tool parts 16 and 17 are held by two clamping plates 34 and 35, with the flanges 37 on the tool parts 16 and 17 via screw connections 36 overlap and are connected to the clamping plates 34 and 35. The clamping plates 34 and 35 are over Tool carrier bars 38 can be moved hydraulically in the direction of arrow 39. This movement is thus of the tool parts 16 and 17 participated

The channel 29 for introducing the foam material into the inner cavities of the tool parts 16 and 17 by means of the attached mixing head 30, in the embodiment according to FIG. 8 in the area in which the two tool parts 16 and 17 lie on top of one another in a sealing manner. So he can as each Open heating channel partially incorporated into one tool part 16 and partially into the other tool part 17 being.

Circumferential temperature control channels 40 are also arranged in the walls of the tool parts 16 and 17, which serve to accommodate temperature control agents to reduce the surface temperature inside the cavities of the To be able to adjust tool parts 16 and 17. Furthermore, in the tool parts 16 and 17 are perpendicular to whose stroke direction 39 is arranged displaceable ejectors 41 and 42 for the composite component. The one in the lower Tool part 17 arranged ejector 41 is in the direction of arrow 43 and vertically displaceable can be operated manually. The ejector 42 arranged in the upper tool part 16 is through a spring 44 is acted upon in the direction of arrow 45, the spring 44 being applied to a flange 46, for example can act on the push rod 47 of the ejector. on In this way, the ejector 42 arranged in the upper tool part 16 is raised when the upper clamping plate 34 and thus a lifting of the upper tool part 16 by the spring 44 automatically operated so that the composite component or parts thereof cannot stick to the upper tool part 16. The composite component then initially remains in the lower tool part 17 until the ejectors 41 in the lower Tool part 17 are actuated. Depending on the type and shape of the workpieces to be produced several ejectors can be arranged evenly distributed over the workpiece surfaces.

Finally, on the walls of the tool parts 16 and 17 core pullers 48 may be arranged to facilitate the removal of inserted into the workpiece Cores 49 are used and the corresponding channels 50 in the walls of the tool parts 16 and 17 in Connected.

In Fig. 8, the foamed-on edge profile 4 is shown, which is the same as in the embodiment according to FIG. 7 overlaps the thin-walled component 2 on both sides. Furthermore, in FIG. 8 as well as indicated in Figure 5 insert parts 13, the foam inlet brought about by means of the mixing head 30 are also foamed. The leads to the Mixing heads 30 are designated by 30a and 30b as in FIG. 7

As can also be seen from FIG. 8, the seals 32, which rest on the thin-walled element 2, directly adjoin the tool cavities, so that a clean seal is achieved. The thin-walled member 2 is disposed within the tool through outside of the cavities and aligned in Fig.8 schematically indicated alignment elements 51 that the thin-walled member 2 having its free edge 52 in one of the strength of the edge termination section 4 corresponding in this area, distance B to the opposite Tool inner wall 53 is held.

For the device claims 6-14 only in connection with the subject claims 1-5 Protection desired

For this purpose 4 sheets of drawings

Claims (1)

Patent claims: 1. Composite component consisting of a thin-walled element with at least one edge of the thin-walled element cross-closing profile, which is formed by a polyurethane integral foam by means of foaming, thereby characterized in that the thin-walled element (2.5) consists of asbestos cement and with a lying in the surface of the thin-walled element (2, 5) and delimited on all sides by this Cutout (3, 6, 12) is provided, the edge profile (4, 7, 8, 10) as a circumferential Inner frame is formed, which the thin-walled element (2, 5) in cross section at least on two overlaps adjacent pages 2. Composite component according to claim 1, characterized in that the edge section profile (4) overlapped edge of the cutout (3) in the thin-walled element (2) with itself perpendicular to the Plane of the element (2) extending holes (33) is provided, in which the foam material entry. 3. Composite component according to claim 1 or 2, characterized in that the edge profile (4) is designed as a window frame within a cutout (3) of a wall cladding panel (2) is. 4. Composite component according to claim 1 or 2, characterized in that the edge profile (7,8,10) as a support ring for a roof attachment (9, U) is formed within a cutout (6, t2) of a thin-walled roof covering (5). 5. Composite component according to one of the preceding claims, characterized in that Connecting elements (13), such as hinges or bolts, as inserts in the edge profile (4, 7,8,10) are also foamed. 6. Device for producing the composite component according to one of claims 1 to 5, characterized characterized in that the device tool (15) with their cavities (18, 19) each other facing U-profile rails (22, 23), on whose webs (24) laterally over the U-profile rails (22, 23) protruding screw carriers (25) are arranged, the two opposing and meeting with their ends Pick up the screws (26). 7. Apparatus according to claim 6, characterized in that in the area of the superposed Edges (20) of the U-profile rails (22, 23) on their legs (27) plate-shaped guides (28) are arranged, each of which overlaps the leg (27) of the opposite U-profile rail (22, 23). 8. Apparatus according to claim 7, characterized in that the wall edges (20) of the two tool parts (16, 17) within the cutout (3, 6) in the thin-walled element (2, 5) lie close to one another, while the outer wall edges (21 ) have a distance (A) corresponding to the thickness (8) of the thin-walled element (2) in the form of a circumferential gap (31). 9. Device according to one of claims 6 to 8, characterized by one of two clamping plates (34,35) existing clamping device, with each clamping plate (34, 35) a tool part (16, 17) is assigned and the two tool parts (16, 17) each preferably by means of screw connections (36, 37) with the assigned clamping plate (34, 35) are connected. S 10. The device according to claim 9, characterized characterized in that the clamping plates (34, 35) can be moved hydraulically towards and from one another. 11. Device according to one of claims 6 to 10, characterized in that in the Tool parts (16, 17) perpendicular to their stroke direction displaceable ejectors (41, 42) for the Composite component are provided. 12. The apparatus according to claim 11, characterized in that when lying horizontally Tool of the ejector (s) (42) acting on the workpiece from above, each with springs (44) are acted upon in the ejection direction. 13. Device according to one of claims 6 to 12, characterized in that on the walls the tool parts (16, 17) core pullers (48) for Removal of inserted into the workpiece Cores (49) are arranged, which are connected to corresponding channels (50) in the walls of the tool parts (16,17). 14. Device according to one of claims 6 to 13, characterized in that to produce a structure in the surface of the edge profile (4) on the surfaces of the tool inner walls (53) a corresponding structure is provided. see is.