DE1146238B - Hollow construction board made of plastic and device for making the board - Google Patents

Description

GERMAN

PATENT OFFICE

kl. 37 b 2/01

INTERNATIONAL KL.

E04c; B 29c

E17675 V / 37b

REGISTRATION DATE: MAY 22, 1959

NOTICE THE REGISTRATION AND ISSUE OF EDITORIAL! MARCH 28, 1963

The invention relates to a composite hollow construction panel made of plastic. Such building boards are already known, for example, for skylights in roof areas. They consist of two spaced apart lying plates, which at the edge, optionally with the interposition of a foam strip, with each other are connected. The production of such construction panels is cumbersome. It would be easier that Manufacture panels in one piece in the extrusion process. However, this is not easily possible because the walls of the two broad sides due to the required thermal plasticity of the plastic would sag when exiting the spray nozzle during manufacture and therefore not the desired planar shape could be obtained. The panels are closed with stiffening bars during manufacture provided is disadvantageous because this would require a particularly complicated injection mold. That too Subsequent insertion of bars can usually no longer fully align the sagging walls, because the sagging walls have already cooled down and can no longer be deformed.

The object of the invention is therefore to create a hollow construction panel made of plastic, for example for skylights and walls, in which the mentioned disadvantages are not given. The board is designed to be simple in size can be made using the extrusion process without sagging enters the walls of the broad sides of the panel.

The object is achieved in that the construction panel consists of one-piece box-shaped elements with constant cross-section, which is at the abutting Pages are linked together.

The individual elements can be dimensioned in this way regardless of the size of the building board that their walls do not deform during manufacture. As an appropriate width of the elements has resulted in a length of about 10 cm.

It is known in the case of structural panels, which are preferably made of metal, to consist of individual box girders assemble, but this is not about the problem of the production of hollow panels made of plastic to simplify. Furthermore, there are no one-piece elements with constant Cross section used in the context of the invention. It is still closed on all sides Hollow construction panel made of plastic with internal stiffening known, but not an element of a composite Represents hollow construction panel.

Because of their softenable plastic material, the box-shaped elements can be attached to a simple hollow plastic construction panel
and apparatus for making the panel

Applicant:

Ernst Günther Eckardt,
Nuremberg, Prinzregentenufer 5

Ernst Günther Eckardt, Nuremberg,
has been named as the inventor

Way to be welded together. Your abutting walls are expediently flange-like before, the protruding edges of these abutting walls connect to each other the elements can serve. This can be done by heating the protruding edges and simultaneous pressing of the same happen. A welding unit is used for this purpose, which has a glow bulb or a filament that goes into the joint between the two protruding edges of the panel elements to be joined together can be used or formed in such a way is that it covers these edges. In addition, the welding unit with a z. B. forceps-like device for the subsequent pressing together of the parts of two adjacent parts to be welded together equipped with box-shaped elements. It is possible to use several such welding machines in the same To be spaced next to each other to ensure that one of several elements assembled construction panel can be welded together at the same time. Before welding together of the elements, a steel wire can also be used as reinforcement in the joints Serves to absorb the tensile forces. It is advisable to place the steel wire as close as possible to the outer edge of the joint to be arranged between two elements.

The walls of the elements that form the broad sides of the panel can be curved outwards in order to thereby to ensure a certain inherent rigidity, which is a great security against destruction of the Walls as well as against sagging during the manufacture of the element. The walls can too the elements be supported against each other.

The elements of the construction board are expediently made of transparent or translucent plastic, if the board z. B. for skylights or the like.

S09 547/116

should be used. There is no special emphasis on the transparency or light permeability of the construction panel Its elements can be filled with insulating material. It is also possible to make the construction board colorful by using a colored plastic, with each element can be a different color.

Further details and advantages of the invention emerge from the description in the drawing Illustrated embodiments of the construction panel, the box-shaped elements forming them and the Device for their manufacture.

In Fig. 1 is an oblique view of three juxtaposed box-shaped elements 2 formed construction panel 1 shown broken off. the Elements 2 have a rectangular cross-section, with the abutting walls 3 of the elements with their longitudinal edges 4 protrude like a flange over the walls S forming the broad sides of the panel. the Adjacent elements 2 are on the abutting sides with each other z. B. by Welding, tacking, gluing or the like firmly connected.

The elements 2 can have different cross-sectional shapes. The broadsides of the Panel-forming walls 5 slightly curved outwards. Furthermore, according to FIGS. 2, 3 and 4 reinforcing ribs 8 be arranged. It is also possible to stiffen the elements 2, their walls support against each other. In the embodiment of an element shown in FIG. 2, this is necessary a single intermediate wall 9 is provided which extends parallel to the walls 3 and the two Walls 5 centrally connected to each other and mutually supported. In the element shown in FIG are to support its walls four stiffening walls 10 in the area of the four corners of the Elements provided, each from the center of the walls 3 in a slight curve to the walls 5 extend.

In order to make the welding, gluing or stapling together of the individual box-shaped elements of the construction panel 1, as well as several panels among themselves superfluous, the flange-like protruding longitudinal edges 4 of the walls 3 of the elements 2 can be U-shaped to the outside, as in the embodiment shown in FIG Forming a groove 11 be bent back, which serves to receive the non-bent edge of the adjoining wall of the adjacent element of the panel. In order to ensure that the non-bent edges are jammed in the grooves of the other element, the edges can be somewhat thickened at their end. One wall 3 of the element can be equipped with grooves 11 on both longitudinal edges (FIG. 5) or it can have a groove only on one edge (FIG. 6). In the latter case, the opposite wall of the element also has only a single thickened edge. If only one groove 11 is present, the abutting walls of the elements 2 must be connected on the opposite side by welding or the like.

The grooves 11 allow an extremely quick, simple and tight connection of the elements. To increase the tightness of the joint between two adjacent elements of a board, can on one or both walls 3 at least two each approximately V-shaped apart Last 12 be attached. In the embodiment of the element 2 shown in FIG. 5, it is on the wall equipped with the grooves 11 is provided with a pair of such strips 12. These bars are coming when connecting an adjacent element to its wall firmly to the plant and ensure not only a perfect sealing of the joint, but also a firm pressing of the longitudinal edges of the neighboring element on the outer wall

ίο the grooves 11.

To weld the elements 2 together at the longitudinal edges of their abutting walls to facilitate, these longitudinal edges, as shown in Fig. 2 and 6, of the subsequent Element be bent back slightly so that the longitudinal edges of the abutting walls are adjacent Elements form a V that is open to the outside. This gaping of the longitudinal edges allows easy penetration of the glow bulb or filament between these edges when Welding process without moving the neighboring elements apart from their mutual contact have to.

As already mentioned, if necessary, the elements can be filled with insulating material 13, such as this is the case in the example shown in FIG. It can sometimes be useful to adjust the transverse stiffness to increase the construction board. This can be done by using special stiffening profiles placed on the flange-like protruding longitudinal edges 4 of the walls 3 of the elements 2 or be attached to these. In Fig. 7 there is one such Stiffening profile shown in cross section, which is based on a also shown in cross section Construction board is put on. The stiffening profile 14 shown in this figure has a web 15 which essentially causes the increase in the transverse rigidity of the panel. This is followed by a footbridge a connecting part 16 which is approximately U-shaped in cross section and which can be placed on the flange-like protruding longitudinal edges 4 of the walls 3 of the adjacent elements 2 of a panel. To ensure sufficient power transmission from the construction panel to the stiffening profile 14 to secure, the U-shaped connecting part 16 is expediently attached to the projecting longitudinal edges 4 of the Elements welded on. According to the required section modulus, the web 15 can be different Height and possibly also have different widths.

To stiffen the construction panel, reinforcing wires can also be inserted into the joints, preferably on both edges.

In Fig. 7 the connection of two adjacent elements of building panels la and Ib with a clamping profile 17 is shown.

To produce the construction panel, the box-shaped elements 2 are first made, which are expedient are about 10 cm wide. Since the elements are made of plastic, they can, provided the plastic is thermoplastic, can be welded together in a simple manner, with only a softening of the parts to be welded together and then pressing them together the same is required. The device illustrated in FIGS. 8 to 12 is used for this purpose, which consists of several adjacent welding units, each of which has an

5 6

direction to soften the profile surfaces to be welded together. In the element parts and a device for an- Fig. 11 and 12 is a side and front view having closing compression of these parts. such softener partially cut That shown in Fig. 8 from the side partially in section. In this setup is the glow wire See unit consists of a glow bulb 19 5 29 over the two lower ends of two lowering preferably electrical heating device 20. right clamping arms 30 stretched, which on a This glow bulb has a narrow neck 21, horizontally extending bar 31 in it which is mounted displaceably between the longitudinal direction of the flange to be welded together and in different types Longitudinal edges 4 of two adjacent elements which positions on the beam engage by means of a clamp, as can be seen from Fig. 9, in which io screw 32 can be determined. The bar 31 is open the glow bulb is attached to a carrier 33 in the working position, shown from the front.

is. The two ends of the piston over the tensioning arms 30 are expediently on both sides of the annealing element Containers or channels 22 for a coolant, tensioned glow wire 29 are along this Spannz. B. cooling water, provided, which is passed upwards directly over arms and attached to sleeves 34, the walls 5 of the elements lie to an over 15 which on the clamping arm displaceable and in different positions the heat emitted by the glow bulb on the layers on this by means of another these walls and thus an undesired clamping screw 35 can be determined. This evidence to prevent the same. This glow bulb type of attachment of the glow wire to the clamping arms 30 is attached to a carrier 23, which at the same time and the displaceability of the clamping arms on the Pressing device 24 for pressing together the by 20 beams 31 serve to reduce the length of engagement of the the glow bulb soften parts of the filament between the surfaces to be softened to be welded elements 2 carries. Change the two jaws of the elements 2 to make them more relative 25 of this tong-like device are movement of the filament compared to the mitderart designed so that at their ends they have the parts to be connected to each other for the spring The longitudinal edges 4 of the walls 3 should be adapted to the heating time required for the softening Detect and be able to weld elements to one another. To reduce the length of engagement press against each other when they correspond to the distance between the two clamping arms 30 by Ver-way The bar 31 is pivoted about the pivot pin 26 and is reduced in size. At the same time must the. For this purpose, the jaws are re-tensioned with the glow wire 29, which is on the side Lever arms 27 provided, which happens to a 30 that one or both sleeves 34 with Control rods 28 are articulated, the back and the glow wire ends attached to them Moving its rods apart or tensioning arms 30 by a corresponding piece Pivoting together the jaws 25 allows. moved upwards.

The device expediently has such a power supply to the glow wire can be via the

Number of adjacent glow bulbs and 35 clamping arms are made for this purpose in

Crimping pliers that all a board forming contrast to the beam 31 of electrically conductive

Elements 2 welded together at the same time will consist of the material. The clamping screws 32

can. In Fig. 10 is a schematic of a welding can in this case as connecting terminals for

Device shown, which the simultaneous supply of the line cable connected to the power source

joint welding one of five side by side 40 serve.

On the bar 31 outside the two clamping facilities, the arm 30 for the glow wire 29 of each welding unit can provide the associated press clarity for the sake of only the pressing device 24, device 24 may be arranged, as shown in FIG. 11 but not the glow bulb 19 is shown. It can be seen from her. It is also useful to be in welding to each rod of the control linkage 28, which 45 direction of the tension arm ahead is a guide Arranged over the pressing devices 24 of all sheet metal 36, which the joint 18 of the welding units extends, one of the two lever elements 2 to be welded together vertically below poor 27 of all crimping pliers hinged, so that the filament or vice versa the latter exactly between these by actuating the rods brings both elements, seen at the same time, can be opened or closed. To a 50 in Fig. 12 is a device with multiple Continuous welding of the elements next to one another over them their entire length to allow and this made of which for the sake of greater over-welding for simple and practical visibility only the arrangement of the filaments Way to ensure that are preferred which is shown. In this device are all adjacent elements on a roller 55 clamping arms 30 attached to the carrier 33, which track, if necessary with lateral guidance, extends continuously at least over the entire width of the or extends in sections under the construction board to be determined in this case. The carrier 33 has vertically arranged welding units through - expediently as in the embodiment shown. However, it is also possible and, for example, a double-T-shaped cross-section, where be it would be more advantageous for the elements to be immovable on the 60 lower flange 37 for supporting the beams 31 and the welding units are used over them. The beams 31 intermesh in beams move. In the latter case, namely with longitudinally extending slots 38 in the web 39 of the Security a mutual displacement of the side-carrier 33 through and are consequently in longitudinally lying, the elements forming the construction panel can be adjusted in the direction of the carrier. Turned on for fixed without jamming 65 position of the beams 31 and thus the clamping arms 30 of the elements is required. in the desired, the required mutual

The welding units can be positioned on the support 33 instead of a layer that ensures the annealing distance

piston also serve a glow wire to soften the clamping pieces 40. In this way it is possible-

Hch, the filaments 29 lying paxally to one another as well as to set the pressing devices 24 of each welding unit at such a distance from one another, which corresponds to the width of the elements to be welded together.

The carrier 33 can be used to move the welding units over the elements to be welded together away at its two ends lying to the side of the construction panel in the direction of the arrows in FIG. 11 be slidably mounted. On the other hand, it is also possible to use the elements instead of the welding units to be slidable in the longitudinal direction in order to move them under the welding units can.

In this device, too, devices for cooling those parts of the Elements provided that are not affected by the Glüll wire to be softened. These facilities are expediently composed of between the welding units arranged cooling water tanks 41, which are suspended from the support 33 and which are connected to one another by connecting pipes 42.

Of course, the invention does not apply to the exemplary embodiments shown in the drawing limited. This applies both to the construction panels and to the device for producing them Blackboard. For example, instead of pincer-shaped pressing devices, pairs of pressure rollers can be provided with the parts of the panel to be welded together between the rollers of each pair be moved through.

Claims (19)

PATENT CLAIMS: 35 ! .Composed hollow construction panel made of plastic, characterized in that it consists of one-piece box-shaped elements with a constant cross-section, which are connected to one another on the abutting sides. 2. Construction panel according to claim 1, characterized in that the abutting walls of the Box-shaped elements protrude like a flange over the walls forming the broad sides of the panel. 3. Construction panel according to claim 1 or 2, characterized in that the broad sides of the panel forming walls of the box-shaped elements are curved outwards. 4. Construction panel according to one of claims 1 to 3, characterized in that the walls of the box-shaped elements are supported against each other (Fig. 2 and 3). 5. Construction panel according to one of claims 2 to 4, characterized in that the flange-like protruding Longitudinal edges of the abutting walls of the box-shaped elements are directed apart in a V-shape (Fig. 2 and 6). 6. Construction panel according to one of claims 2 to 5, characterized in that at least one the flange-like protruding longitudinal edges of the walls of the box-shaped elements U-shaped is bent back outwards (Fig. 5, 6 and 7). 7. Construction panel according to one of claims 1 to 6, characterized in that on one or both abutting walls of the box-shaped elements are arranged at least two approximately V-shaped spaced apart strips are tight against the wall of the adjacent element (Fig. 5). 8. Construction panel according to one of claims 2 to 7, characterized in that the box-shaped Elements are attached to each other with connecting profiles that protrude on the flange-like Longitudinal edges of their abutting walls are clamped on (Fig. 7). 9. Construction panel according to claim 8, characterized in that the connecting profiles are approximately U-shaped are formed and consist of elastic material (Fig. 7). 10. Device for producing the panel according to one of claims 1 to 9, characterized in that that it has a number of juxtaposed welding units, consisting of a device for softening the one another to be connected parts of the box-shaped elements and from a device for subsequent Compression of these parts exist (Fig. 8 to 12). 11. Apparatus according to claim 10 for manufacturing the panel according to any one of claims 2 to 9, characterized in that the device for softening the to be connected to one another Parts of the box-shaped elements consist of a glow bulb with a groove for Recording of the flange-like protruding edges of the abutting walls and / or has an approach which penetrate into the space between the edges can (Figs. 8 and 9). 12. The device according to claim 10, characterized in that the means for softening the parts to be connected to each other consists of a filament, which is between the to connecting parts engages (Fig. 11 and 12). 13. Device according to one of claims 10 to 12, characterized in that the device for pressing the softened parts together by a single actuator there is a joint to be opened and closed press jaws (Fig. 8, 10 and 11). 14. Device according to one of claims 10 to 12, characterized in that the device for pressing the softened parts together from pressure rollers arranged in pairs consists. 15. Device according to one of claims 10 to 14, characterized in that the welding units and the box-shaped elements to be welded together are continuously displaceable relative to one another in the longitudinal direction. 16. The device according to claim 10, characterized in that for the storage of each welding unit A special secondary beam is used on a common main beam, its location and its distance from the adjacent secondary beam on the main beam according to the width of the box-shaped elements is adjustable and at its front end the softening device and at its rear end the Pressing device carries (Fig. 11 and 12). 17. Device according to one of claims 12 to 16, characterized in that when using one between the to be connected to one another Parts of the intervening glow wire Length of engagement of the filament between the elements to adapt to the required Heating time can be changed (Fig. 11). 18. Apparatus according to claim 17, characterized characterized in that the filament to adjust its length of engagement between two fastening arms is tensioned, which are slidably mounted on the secondary beam to change their mutual distance, and that the filament via the lower ends of the 10 Arms passed up along the arms and on the arms with its two ends in different Heights is fixed (Fig H) - 19. Device according to one of claims 10 to 18, characterized in that between the welding units coolant-carrying containers are arranged (Fig. 9, 11 and 12). Considered publications: ίο German patents nos. 533 724, 647 272, 356, 920 031. For this purpose 2 sheets of drawings