DE2813114A1 - FORM FOR MANUFACTURING PREFABRICATED COMPONENTS - Google Patents

Description

Your sign
Your rcf. Your shrines from
Your letter Our sign
Our call Bremen.
Feldstrasse 24 New registration DX 1614 23rd time Pt and Hgm

David A. Van Doren, P.O. Box 1008, Hays (Ellis Country) Kansas 67601, (V.St.A.)

Mold for the production of prefabricated components

The invention relates to a mold for making prefabricated panels.

The subject of the invention is therefore improvements of molds that are used to manufacture prefabricated components such as wall parts and floor panels. In particular, these are forms of this type that are lightweight and should be transportable. In addition, the molds should be able to be dismantled and reassembled quickly. In addition, the forms according to the invention be sufficiently stable to be able to be reused frequently.

Bremen office

P.O. Box 10 71 27, Feldstrassec D 2800 Bremen 1 Telephone: (0421) * 74044 Telex: 2449WbOPaId Ι (1ι μΓ: Diagramin.Bremen

809841/0770

Bremen accounts:

I'ScliA Hamburg

(BLZ 20010020) 126083-202

Munich office Schlotthauer Straße 3 D-8000 Munich 90 Telephone: (089) 652321

Telcgr. : Tclepatcnt, Munich

BOEUMIiRT & BOI / HMERT

When prefabricating concrete wall and floor parts weapon-shaped plates and tablets have numerous advantages, especially with regard to material savings, weight savings and costs. They also arise in architectural Regarding advantages in three-dimensional arrangements. A waffle pattern is also complete Freedom to fully isolate external walls, whereby the exposed areas of the waffle pattern are modular Window units can be used without the wall strength would be impaired. Electric Wiring and installation cables can be installed after the building has been erected. Numerous inner load bearing walls and vaults only need to be painted or textured to become one to lead pleasant fair-faced concrete impression. Because the skin is relatively thin in the voided areas (compared to the structural ribs or webs of the Waffle pattern), these areas can easily be penetrated by means of drilling equipment and saws, whereby mechanical, electrical and plumbing work are facilitated.

In addition, the waffle pattern lends itself to the use of modular prefabricated components that either can be prefabricated at the construction site or in a factory. For a manufacture at the construction site is it is important that the molds are light in weight and transportable. It is also necessary that the molds can be easily removed and reassembled for quick production. Resilience, reusability, and ease of construction are also of importance in the production of components at the construction site, the acceptance

809841/0770

BOEMMHRT & BOEHMERT

Handle the machinery in a factory and the space available there are not available.

The invention is therefore based on the object of creating a form of the type mentioned at the outset, which is both for the factory as well as for on the construction site Prefabrication of panel-shaped components is suitable, with the form being built up, dismantled and removed quickly and should be reassembled and reused many times over. The form should be foolproof to use, wherein releasing the mold from the hardened molded product without the use of compressed air or others special facilities should be possible, so that the shape is particularly suitable for component production at the Construction site. The shape should have a light weight and be easy to transport. Furthermore should the mold must be strong and rigid in use, so that the molded products obtained do not have dimensional defects exhibit. In addition to the above object components, the form according to the invention, which serves for the production of plates, have reinforcing rails on the sides of the molded body, which any There is a tendency for uneven edges to be formed as a result of the not yet hardened material during filling outward forces exerted by the shape. The reinforcement rails or reinforcement members are designed to be either adjusted or tensioned the sides of the mold or, due to its rigid structure, the outward forces that occur during filling counteract the shape against the side panels.

According to the invention this object is achieved by a

809841/0770

IJOFHMIiKT

λ 28131U

one-piece molded body made of flexible material, which is a plate-forming component with a number of one-piece therewith formed side parts, which form the circumference of the molded body, wherein the side parts for the formation of flexible, outwardly on the component from normal mold positions as well as from a molded product inside the molded body for pulling the molded product out of the molded body from the molded product have away pivotable flaps free end edges, the closed corners of the adjacent side panels Form body when the side parts are in their normal positions, and when pivoting the outward Side parts come apart to open the corners; and releasable means provided at each corner, which the corners are closed during the molding process to hold the side panels in their normal positions keep.

Apart from the above stated object, there is a further, important advantage of the invention in that a mold is created which has a plate-forming molded body made of flexible material, such as plastic, has, on its sides by rigid rail parts made of metal or other suitable material is reinforced. Between the flexible side parts and the rigid reinforcement parts can preferably Special connections can be provided, which give the molded body the possibility of being independent of the Expanding and contracting reinforcement parts so as to reduce the risk of splintering or splitting with temperature changes to reduce.

Another advantage of the invention is that

809841/0770

BOI-HMERT & IJOEHMHRT

28131U

is intended to create connections of the type mentioned above, which also give the possibility that the molded body is easily separated from the reinforcement parts can be so that the molding can be replaced after it has ended its life, whereupon the reinforcement parts can be used again.

Furthermore, according to the invention, it is particularly provided that the mold is suitable for the production of prefabricated components with a waffle pattern, the one producing the waffle pattern Molded body a single piece of flexible material, such as suitable plastic, is, wherein the molded body should then be specially reinforced to make the plate material rigid and resistant and to avoid dimensional errors. For this According to the invention, it is particularly provided that the side parts of the molded body are flexible, so that flaps are formed, which are pivoted away from the molded product which is arranged within the molded body can in order to be able to release the molded product from the molded body.

In particular, it can be provided according to the invention that the mold has flexible side parts of the aforementioned type, in which the corners of the molded body are open, so that the pivoting movement and rapid removal and reassembly of the mold are guaranteed.

According to the invention is thus also advantageous created a shape provided with open corners, in which the corners during the molding process by simple Locking devices that can be easily released for removal are kept locked.

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809841/0770

BOEHMhHT & IiOIiHNiERT

28131H

It is particularly preferred in the form according to the invention a one-piece molded body, as already stated, for the prefabrication of waffle pattern components serves, wherein the cavity-forming portions of the plate material are reinforced by a filler can, which gives rigidity to the areas concerned and also as a reinforcing agent for them serves.

Another advantage of the invention is that the molds created thereby are easy to clean can, wherein integrally formed material inserts can be provided on the flexible side parts. Built-in supports for reinforcing rods can also be provided, which allow the use of shoes or other support inserts in addition to the shape. These supports can also Create free spaces in the molded products for electrical and water installation purposes.

Further features and advantages of the invention emerge from the claims and from the following description, in the exemplary embodiments are explained in detail with reference to the drawing. It shows:

Fig. 1 In a perspective view, an embodiment of a shape according to of the invention, which is used in the manufacture of prefabricated weapon plates finds;

2 in an enlarged, fragmentary view (partly in the front view and partly in vertical cross-section) the shape of Fig. 1 in filled with concrete State, with one of the side parts in the outwardly pivoted state again-

809841/0770

HOHHMHPvT &! 5OBIJMHRT

28131U

is given, whereby the shape can be released from the wafer plate;

Fig. 3 shows a corner of the shape of Fig. 1 on the same scale as in Fig. 2 in plan view, wherein the shape is shown as in Fig. 2 in the state filled with concrete;

4 in a greatly enlarged, detailed exploded view, in perspective, one of the corners of the mold and the end of an associated reinforcement part;

Fig. 5 in fragmentary perspective

• Representation of the corner shown in FIG. 4 on the same scale, with the corner is shown in the closed state during the molding process;

FIG. 6 shows a fragmentary plan view, similar to FIG. 3, of an overall transverse side part the shape, with the counteracting force of the tightening strap represented by the broken line bent inwards is;

7 in a fragmentary, perspective illustration an example of a finished wafer plate made by the mold of Figures 1 to 6 or 8 to 11;

8 shows a top view of a corner of a modified embodiment of a mold, with parts broken away to reveal details of construction; At this Shape are related to tubular reinforcement parts, those on the side panels and on the outward-facing flanges of the mold Dovetail joints are attached;

FIG. 9 shows, in an enlarged, perspective illustration, the corner of the shape shown in FIG. 8, looking generally in the direction of arrows 9-9.

Fig. 10 is a fragmentary perspective view a tubular reinforcement piece, which is attached to the molded body as in Figure 8 by means of dovetail connections;

809841/0770

BOIiI-IMhI'.T & HOFJIMFiKT

28131U

FIG. 11 shows, on an enlarged scale, a cross-sectional view along the line 11-11 of FIG Fig. 8;

FIG. 12 shows a view similar to FIG. 11, but on an enlarged scale, with a modified one Tongue and groove connection is used; and

Fig. 13 in a fragmentary plan view, in the same Scale as in Fig. 11, a side part of the form in which the tongue-groove connection is provided with parts broken away to reveal details of construction.

If one now looks first at FIG. 7, one recognizes that there is a prefabricated waffle plate or wafer table, which has been made by the mold of Figures 1 to 6 or 8 to 13 is shown. This plate forms a modular unit made of reinforced concrete that can be used either as a wall, roof or floor slab. Panels of this type are characterized in that they have a relatively thin skin 20, thick sides 22, which define the periphery of the plate and have webs or ribs 24 formed in one piece. Ribs 24 are arranged at regular intervals and thus form cavities 26 where the thickness of the plate is exclusive is based on the skin 20. Obviously, the holes 26 lead to a considerable saving of material and weight reduction without losing strength, namely because of the structural ribs 24 and the sides 22, in was impaired to a significant extent. Characteristically, each plate has a width in its transverse dimension about 8 feet. A typical panel is still about 3.60 m (12 feet) long, and on the sides 22 and the ribs 24 20.32 cm (8 ") thick. If the thickness of the skin 20 is 5.08 cm (2"), the manufacture

809841/0770

BOEHMERT & BOEHMERT

Position of the board only requires half of the concrete that is required for a solid wall with a thickness of 20.32 cm (8 ") must also be used with a correspondingly thick roof or a correspondingly thick floor»

As can be seen in FIGS. 1 to 6, in the case of the invention Form a one-piece molded body provided, which has a plate-forming component 26a and has four side parts 28 connected thereto or in one piece. The entire molded body that makes up the component and which forms side panels 28 is made from a single sheet of flexible material such as thermoformed ABS plastic. To the molded To give the product the required waffle shape, the mold component 26 is spaced apart from one another arranged, raised portions 30 are provided. For example, in Fig. 1 there are twelve such sections 30 reproduced in two rows of 6 sections each. Each of the sections 30 has the appearance of one over one Base grid 32, which forms a net at the bottom of the mold, raised platform (Fig. 2}. As a result of use of a single piece of plastic sheet, each raised portion 30 has a downwardly facing Cavity which is filled by a rigid plastic mold 34. As a result, the component 26 becomes structural reinforced. In addition, the sections 30 are reinforced and the mold isolated, thereby the hardening process is promoted.

The two longitudinal and two transverse sides 28 are pliable due to the flexible nature of the plastic sheet material and therefore form flaps around bending lines 36 at the line connecting the sides 28 with the outer

809841/0770

BOEHMERT & BOLHMERT

Edges of the grid or mesh section 32 of the shaped body can be swiveled. Each of the side parts 28 is reinforced by a rail 38 made of a suitable Piece of a 2 χ 4 wood. Each page 28 is on the associated reinforcement part, namely the rail 38, as best shown in FIG. 4, attached. The upper edge of the side part 28 has an outwardly facing flange 40 which is fastened to the rail 38 by wood screws 42. It should be noted that each end 44 of the rail 38 with the corresponding end edge 46 of the side member 28 to which the rail is attached is, flees. An identical construction is made at each end 44 of each of the four rails 38 on the four Side parts 28 of the molded body used. For additional reinforcement and stiffening stretches a strip of plywood 48 along the length of each of the side panels 28 and is the full width of the Side part from top to bottom. The top edge portion of each plywood strip 48 is sandwiched between the associated side parts 28 and the rail 38 added.

It should also be noted that the end edges 46 of the side parts 28 are free end edges, so that the molded body is therefore has open corners in the manner that the side parts 28 in the manner described above from the normal Casting or molding position, in which they close the corners, can be swiveled outwards, as for the left one Side part 28 is shown in FIG. During the molding process, each corner is locked by a locking device kept closed, as can best be seen in FIGS. Each end 44 of the reinforcement rail 38 has a corner plate 50 which passes through it

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809841/0770

BOEHMEKT & BOEHiViERT

28131U

three screws 52 are attached, which pass through aligned holes in the rail 38 and in the Plate 50 extend. The plate 50 has a tongue which extends in the longitudinal direction from the rail 38 extends outwards. The tongue has an opening 54 in which a locking pin 56 is received, through the opening 54 and a corresponding opening 54 is inserted into the adjacent corner plate 50 when aligning the openings. The locking pin 56 is held in place by a wedge 58 inserted through a transverse opening in pin 56. To this Way, the locking pin has the type of a wedge bolt, by which the two tongues, as can be clearly seen in FIG. 5, firmly overlap one another Engagement are held.

To avoid the tendency of the side panels to stand under the high, to bend inward forces exerted when pouring concrete into the form, to counteract it, extends A tension band 60 extends the length of each of the reinforcement rails 38 and lies flat on the outer longitudinal edge 62 of the same. This longitudinal edge 62 has a slot 64 at each end 44 of the rail 38, see above that a threaded pin 66 which is welded to an eyelet 68 on the inner surface of the band 60 near the end thereof is, can be included. An upstanding flange 70 on corner panel 50 abuts the end 44 of the reinforcement rail 38 and has an opening 72 through which the threaded pin 66 extends in the longitudinal direction of the rail 38. A nut 74 and a washer 76 at the outer end portion of the threaded pin 66 rest against the flange 70 and complete it the tension adjustment assembly.

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80 9841/0770

BOEHMIiKT & HOEHMKRT

28131H

As FIG. 2 shows, transverse strips 78, which are built-in supports, are formed in the base grid 32 of the molded body for reinforcement bars (rebar) form, such as shown at 80. As can be seen from FIG. 7, the transverse strips 78 and similar transverse strips lead along of the grid are spaced, to the fact that in the side parts 22 and the ribs 24 of the cast Product grooves 82 are formed. Apart from the fact that the inner grooves 82 are an advantageous means for Provide support by reinforcing rods without shoes having to be used, ensure the internal grooves 82 a connection between adjacent cavities 26 and thus also serve as paths for electrical and Water installation purposes. In the molded body are the Cross bars between pairs of adjacent raised portions 30 at their ends with the corresponding with Foam-filled cavities in communication, creating the open grooves 82 in the ribs 24 of the molded product remain. The transverse strips 78, which can be seen in FIG. 2, are only open at their inner ends, since they are arranged on the portions of the mold which form the side surface.

Circular protrusions 84 are attached to the inner surfaces of the side panels 28 (Fig. 2) and are along of the side parts arranged at a mutual distance, which results in brackets for parts that during the pouring of the concrete into the mold should be held in place. In particular, each of the protrusions becomes 84 is used to support the short section of tube 86 which extends across the mold extends so that a through hole is formed for screws or bolts that are used to the

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809841/0770

BOEHMhk'i 45t HOIiHMHRT

28131U

assemble finished panels or panels in the desired manner. Such holes are can be seen at 88 in FIG.

In practical use, it is found that the low weight and easy portability of the mold, such as it is shown in FIGS. 1 to 6, making them ideally suited for prefabricated panels on the building site to manufacture. The simple, foolproof usage, together with the reusability, make the mold also suitable for prefabrication in a factory. When the side parts 28 have been closed and the locking pins 56 have been brought into position, will the mold is filled with concrete in the usual way. The nuts 74 at the ends of each of the straps 60 are in the adjusted as necessary to prevent the side members 28 from bending outward. The effect of each band 60 onto the associated reinforcement rail 38 is indicated in FIG. 6 by the broken line 90, which shows the inward bending (exaggerated shown) of the rails 38 and the side panel 28 before filling the mold. Be accordingly the nuts 74 are adjusted so that once the concrete is filled, the outward forces against the side parts 28 precisely by the inwardly directed forces exerted by the tension band 60 be balanced. This ensures that the edges of the finished panel are straight and true to size and the dimensional error will not be introduced into the product.

After the concrete has hardened, the mold is removed by pulling out the four locking pins 56 and

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809841/0770

BOEHMERT & BOEHMERT

four side parts 28 are peeled off from the molded product. Since the side parts 28 are flexible flaps, they vibrate they, once the locking devices have been released, slightly around the bending lines 36, so that the cast product can be pulled out of the mold quickly. It should also be noted that the Side parts 28 away from the molded product at the same time pulls the projections 84 out, so that the bores 88 become accessible.

The mold construction described above and shown in the drawing can be used many times. to shape experiments of this kind have shown that they can be reused hundreds of times. This shows that the invention Shape is extremely resistant despite its light construction. It should be noted that in the Concrete in addition to the reinforcement bar 80 which sits on the crossbars 78 of the form, as shown in FIG is, in a desired manner, further reinforcements can be used by a sieve 92, in Fig. 2 is used, which is approximately centered in the skin portion 20 of the product. To the narrow one A rubber strip 9 4 can be used to fill any gap in each corner of the mold.

Reference is now made to FIGS. 8-11. The shape shown in Figs is, is modified in that the rails 38, which in the embodiment according to the Fig. 1 to 6 is used, are replaced by box parts 100, which can be constructed tubular and are preferably formed by extrusion of aluminum. Each of the box parts 100 has a structural strength,

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8098 41/0770

HOIiHMEKT & BOEiIMERT

28131U

which is sufficient to prevent outward bending of the side parts of the molding, which would otherwise occur would when the mold is filled with concrete.

The shaped body shown in FIGS. 8 to 11 is the same as the shaped body of ^{FIGS. 1 to 6 and has a plate-forming component 26a 1} and four integrally formed side parts 28 '. The upper edge of each side part 28 'forms an outwardly facing flange 40'. Each of the reinforcing box parts 100, as shown, consists of an extruded aluminum strand 101 of inverted U-shape (Fig. 11), into which a separate bottom plate 103 is inserted to complete the structure. The box part accordingly has a rectangular shape and has outwardly directed surfaces 116, 118, 120 and 122. The side surface 116 of each box part 100 abuts the outside of the associated side part 28 ', while the top surface 118 abuts the lower side of the outwardly directed flange 40'.

As already explained above, the shaped body consists of a plate or film made of flexible material, such as ABS Plastic. On each side part 28 'is along it glued on the lower edge of a longitudinally extending dovetail strip 102 from the same Consists of plastic material. In a similar way is a longitudinal dovetail strips 104 on the underside of each outwardly directed Flange 40 'glued or otherwise connected to it. In each of the faces 116 and 118 of each of the box parts aligned, mating grooves provided receive the corresponding dovetail strips 102 and 104. The longitudinal connections that are formed in this way

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809841/0770

BOEHMHRr & BüLHMfiKT

28131U

allow a relative longitudinal movement of each of the side parts 28 'and the box part arranged thereon 100, when the side parts and the box parts expand and contract with temperature changes. this is important because the expansion coefficient of, for example, ABS plastic is significantly different from the expansion coefficient of aluminum. If therefore the side parts of the molded body are not relatively free regardless of the box parts at considerable Changes in the ambient temperature could expand and contract, so the molded body could possibly Get cracks and shatter. This risk is significantly reduced by the dovetail connections, since an independent longitudinal movement of the side parts 28 'and the box parts 100 is made possible.

In the embodiment of the invention shown in Figs. 8 to 11, the locking devices, the can be used in the embodiment of FIGS. 1 to 6, as best seen in FIGS is replaced by other locking devices, as best shown in FIG. The box parts 100 are elongated and extend along the outside of the molded body, as in FIG Figures T through 6. Each of the box members 100 has a pair of opposite ends that are near the end edges of the associated side part 28 'ends. At each corner, the ends of both box parts 100 run under one Angle of 45 ° and butt against each other if the locking devices, which are described below are discussed, come into play.

As can be seen, each of the reinforcement box parts

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HOEHMLRT & BOLHMHRT

100 hollow and tubular. At each corner of the molded body an opening is provided through a chamfer on the upper and lower surfaces and 122 of each box member 100 from the lower side surface 120 runs to the butt joint. This opening is sealed by an end cover plate 106 which is attached to this end of the box part 100 by screws 107 which are screwed through the plate 106 into the box part are rigidly attached. The bevels or cuts at adjacent ends are aligned, when the corners are closed as shown in Fig. 8. The two cover plates 106 are therefore perpendicular to the closed butt joint arranged edge to edge.

As can be seen in FIG. 9, a tab 108 of a conventional type serves as a locking device and is fastened the ends of the box parts lying against one another at each of the corners of the shaped body. The tab 108 has a hook portion 110 that is rigidly attached to the left end cover plate 106. Farther For example, the locking device includes a cam actuation lever 112 attached to the right cover plate 106 and a bracket 114 carries. The lever from its locking position shown in FIG shifted to the left and the bracket 114 placed over the hook 110, the lever can then be in his Move the position shown in Fig. 9 to the right, with the ends of the two box parts 100 close to one another pulled and a butt joint is made. To release the tab 108, the lever 112 again shifted to the left until the bracket 114 can be released from the hook 110.

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809841/0770

HOKHMLRT & IiUHHMIiKT

28131U

The embodiment shown in Figures 8-11 avoids the need to use the tensioning straps which must be used in conjunction with the reinforcement members or reinforcement rails in the embodiment of Figures 1-6. In addition, when a molded article wears, any of the
Box parts 100 are separated from the molded body
and can be used again. This is done by removing the end caps 106 from each box section and sliding the box section longitudinally along the dovetail strips 102 and 104 until it is completely disengaged therefrom. The same reinforcement parts can then be attached to a new molding
reinstalled by engaging the groove portions of surfaces 116 and 118 of each box member 100 with the dovetail strips 102 and 104 of the new molding.

An alternative embodiment of a longitudinal expansion connection is shown in FIGS. 12 and 13, one of the side parts 28 'of the molded body and the associated reinforcement part 130 being shown in detail. Here, too, the box part 130 is preferably produced in the form of a strand from aluminum by extrusion and is shown as a one-piece strand, which has a longitudinal recess 132 on its outside, which serves as a handle for lifting and lowering the mold and also that
Clamping or clipping on an insulated lid
(not shown) can facilitate over the molding. As in FIGS. 8 to 11, the inner side surface 134 of the box part 130 abuts the outside of the associated side part 28 ', while an inner edge 136 of the upper surface of the box part below the

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809841/07 70

FiOEHMFiRT & HOEHMFiT

ouch

outwardly facing flange 40 'lies.

The flange or lip 40 ', as in FIGS. 12 and 13 shown, but is specially shaped on its outer edge, creating a generally Z-shaped tongue is formed, which is received in a matching groove 140, which is a recess in the upper wall of the box part 130 is provided. It should be noted that the groove 140 is formed by a horizontal slot below a longitudinally extending lip portion 142 of the upper wall of the box part 130 and that the arrangement of the groove provided as a recess leads to the Z-shaped tongues 138 being held in the groove so that the same is prevented from being pulled out of the groove. The bottom of the groove 140 is located below the level of the rim 136. The upper end of the groove is through the lower surface of the lip portion 142 defined.

A second, essentially Z-shaped tongue 144 is formed by a longitudinal plastic strip 146 which on the side panel 28 'by a solvent adhesive glued or fastened there by screws (not shown) if desired. The top standing tongue 144, which is formed by the strip 146, is in a corresponding longitudinal groove 148 in the floor 150 of the box part 130 received, the groove 148 is formed by the shape of the strand and is located at the lower, inner corner of the box part 130, where the Bottom 150 merges into the inner side wall of the box part.

When using the tongue and groove expansion joint,

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809841/0770

ΠΟΙ-ΉΜΚΚΤ

28131H

which is shown in Figs. 12 and 13, the Longitudinal strips 146 are temporarily brought into position on the side parts 28 'or also attached, after the box members 130 are attached to the flanges 40 ' have been. The latter option is particularly advantageous because then the option of a inaccurate placement of the strips 146 is eliminated. Each box part 130 is attached to the associated side part 28 'by inserting the Z-shaped tongue 138 into the recessed groove 140 until the box part fully with its surfaces 134 and 136 in contact with the side part 28 'and the flange 40'. The Z-shaped one Tongue 144 is then inserted into lower groove 144. Then the strip 146 is attached to the side panel 28 'attached by means of glue or screws. As with the dovetail connection of Fig. 8 to 11, each of the box parts 130 can be easily Separate from a worn mold and use again by pulling the box part lengthways along the Side part 28 'is displaced until it is completely disengaged from tongues 138 and 144.

One advantage of the tongue-and-groove expansion joints as shown in FIGS. 12 and 13 is there in that the manufacturing tolerances are not as high as they are for the dovetail expansion joints required are. Therefore, assembling the mold is more foolproof and requires less labor. As in the dovetail joint, the strips 146 should also be made of the same material as the molded body or made of a material which has essentially the same coefficient of expansion as the material of the molded body has, so that the side parts 28 'and the strips 146 are longitudinally in the same Expand and contract measure.

Claims (21)

BOEHMEKT & UC) EHMERT DX 1614 EXPECTATIONS 1J mold for the production of prefabricated panels, characterized by a one-piece molded body made of flexible material, which has a panel-forming component (26a, 26a ¹ ) with a number of integral side parts (28, 28 ') which form the periphery of the molded body, wherein the side parts for the formation of flexible flaps that can be pivoted away from the molded product on the component from normal mold positions to the outside as well as of a molded product within the molded body for pulling the molded product out of the molded body have free end edges which form closed corners of the molded body in adjacent side panels when the The side panels are in their normal positions, and when the side panels are pivoted outward, they diverge to open the corners; and releasable means (56, 108) provided at each corner for holding the corners closed during the molding process to hold the side panels in their normal positions. 2. Form according to claim 1, characterized in that the molded body consists of a plastic plate which 8 0 9 8 4 1/0770 ^0R! G ^ AL INSPECTED ^ JKJIiHMEHT ά BCHiHMFiRI 1 28131U is so designed that a molded product made therein is given the desired shape; and that continues a variety of elongated reinforcement members (38, 100, 130) on corresponding side parts (28, 28 ') is provided, which extend substantially outside of the molded body over the entire length of the side parts. 3. Form according to claim 2, characterized by on the reinforcement parts (38) arranged adjustable means (60) for applying inward forces predeterminable size, the outwardly directed forces acting on the side parts that occur when the molded body is filled, counteract. 4. Form according to claim 2, characterized in that the reinforcement parts (100, 130) made of a rigid material exist whose coefficient of expansion is different from the coefficient of expansion the plastic material from which the molded body is made is substantially different; and that between means (102, 132) are provided for each of the side parts (28 ') and the corresponding reinforcement part (100, 130) are, which connect the side parts with the reinforcement parts and a longitudinal relative movement between the side parts and the reinforcement parts when they expand and contract with temperature changes, enable. 5. Mold according to claim 4, characterized in that the side parts (28 ¹ ) outwardly facing flanges and the reinforcing parts have outer surfaces which abut the corresponding side parts and flanges, the connecting means, the side parts and the flanges 809841/0770 BOEHMBRT & IK) I-I iF / IiRT ? 28131H firmly with the corresponding surfaces of the reinforcement parts Connect (100, 130). 6. Mold according to claim 5, characterized in that the connecting ^{devices have connecting elements on the side parts (28 1} ) and the flanges which extend essentially in the longitudinal direction thereof and consist of a material which has essentially the same coefficient of expansion as the material of the molded body has, wherein corresponding longitudinal connecting elements are provided on the reinforcement parts. 7. Form according to one of the preceding claims, characterized by a plurality of elongated, corresponding to Side parts (28) arranged elongated reinforcement parts (38), which extend essentially over the total length of the side parts extend on the outside of the molded body; and. an elongated tension band (60) on each of the reinforcement members, which serves to apply inward forces thereon, the counteracting forces which are directed against the side parts and which occur when the molding is being filled. 8. Form according to claim 7, characterized in that each of the reinforcement parts (38) has an outer longitudinal edge along which the respective tensioning strap (60) extends extends. 9. Form according to claim 8, characterized in that each of the tensioning straps (60) has a pair of opposite one another Has ends adjacent corresponding corners; and that at each of the ends means (74) connected to the assigned reinforcement T 809841/0770 Ci: BOEHMhKT & HOEHMERT ü 28131U are partially engaged and used to adjust the tension of the belt. 10. Form according to one of the preceding claims, characterized by a plurality of elongated reinforcing parts (100, 130), which are located on corresponding side panels (28 ¹ ) extend essentially over their entire length on the outside of the shaped body; and a longitudinal connection (102, 132) between each of the side parts and the corresponding reinforcement part, by means of which these parts are connected and the molded body is given the opportunity to expand and contract independently of the reinforcement parts (100, 130) with temperature changes. 11. Mold according to claim 10, characterized in that each connection has a pair of mating connecting ^{elements on the respective side parts (28 1} ) and the respective reinforcement part (100, 130) which extend in the longitudinal direction thereof. 12. Form according to claim 10 or 11, characterized in that the reinforcement parts (100, 130) are tubular Metal are formed and have sufficient structural strength to undergo deformation under the To withstand the influence of forces directed against the side parts when filling the mold. 13. Form according to one of the preceding claims, characterized by a plurality of elongated reinforcement members (38, 100, 130) extending along corresponding Side parts (28, 28 ') extend on the outside of the molded body and each of which has a pair opposite one another. 809841/0770 BOEHMERT & IiOIiHMERI 28131IA has lying ends which end adjacent the end edges of the associated side part, the detachable Devices have a plurality of locking devices at respective corners which are used to connect the The ends of the reinforcement parts (38, 100, 130) are used. 14. Form according to claim 13, characterized in that each of the reinforcement means includes a pair of corner panels attached to respective ends of the associated Reinforcement parts are attached and provided with holes that are aligned with each other, when the corner is closed, a locking pin through the aligned openings (56) can be passed through. 15. Form according to claim 13, characterized in that each of the locking means has a pair of end caps attached to the respective ends of the associated Reinforcement parts are attached, wherein a tab (108) with mutually engageable parts is provided on the end caps, the closures serves the corner. 16. Mold according to one of the preceding claims, characterized in that the shaped body consists of a plate
having flexible material; that the plate-forming component (26a, 26a ¹ ) of the shaped body is designed in such a way that the molded product to be produced in the shaped body is given a waffle-like appearance; and in that the shape-forming component (26a, 26a ¹ ) is provided with spaced-apart, cavity-forming, raised portions (30) which face downward
Form pointing cavities, with a in the cavities 809841/0770 BOHHMFRT & ItOI'.HMKRT (, 28131U Filler material arranged to reinforce the component and to stiffen the raised portions of the component is. 17. Mold according to claim 16, characterized in that the filling material is a solid foam. 18. Mold according to one of the preceding claims, characterized by a number of material inserts at least some of the side parts (28, 28 '), with the material inserts are attached to the side part and protrude inward from this. 19. Form according to one of claims 16 to 18, characterized in that between the raised sections a base grid (32) for forming structural ribs in the molded product, which with a plurality of transverse strips (78) for supporting reinforcing rods (80) and the like. Which are cast into the molded product are to be provided, wherein the raised portions form downwardly facing cavities and the supporting cross bars with corresponding cavities in such a way that in the ribs of the molded product, grooves (82) are formed which can be used for electrical and plumbing purposes are. 20. Mold according to one of the preceding claims, characterized in that a number of elongated reinforcing parts (100) on the outside of the molded body extends ^{along corresponding side parts (28 1);} and there is one between each of the side parts (28 ') and the corresponding reinforcement part (100) 809841/0770 BOEHMHRT & ΒΟΚΠΜΕΚΪ 1 28131 Dovetail joint (102) for connecting the parts, which is independent of the reinforcement parts Expansion and contraction of the shaped body with temperature changes allows, with each connection a pair of mating dovetail links on the joined side panel and the reinforcement part, which extend in the longitudinal direction of these parts. 21. Mold according to one of the preceding claims, characterized by a plurality of corresponding ones Side parts of reinforcing elements (130) extending substantially over their entire length on the outside of the shaped body; one up between each of the side panels and longitudinally extending connection to the corresponding reinforcement member connecting these members and gives the molded body the opportunity to react to changes in temperature expand and contract independently of the reinforcement parts; and a pair with mating surfaces provided groove and tongue elements (138) on the side and reinforcement parts connected to one another, extending in the longitudinal direction thereof, the tongue element of each connection being substantially Z-shaped is formed and the matching groove element is arranged so that the tongue element after insertion into the Groove cannot be pulled out. 809841/0770