DE8022852U1 - PLASTIC MOLDING COMPOSED FROM MULTIPLE ITEMS - Google Patents

Description

GEYtR, flAGEM-A'MN &

PATENT LAWYERS
Destouchesstraße 60 · P.O. Box 400745 · 8000 Munich 40 - Telephone 089/3040 7V - Telex 5-216136 hage d - Telegram hageypatent - Telecopier 089/304071

Moshe FARHI Munich, the

4a Givat Downs Street August 27, 1980

Haifa, Israel Dr.G / 2 / EG u.Z .: GM 175 / 1-80M

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PLASTIC MOLD COMPOSED FROM SEVERAL INDIVIDUAL ELEMENTS ...

The innovation relates to a composite of several individual elements of plastic molding, as it is applicable for casting ribs concrete ceilings, in \ of the two mold - end members directly or with the interposition

one or more intermediate shape elements are connected to one another, with two individual elements lying next to one another are connected to each other on their facing sides by a connecting insert.

Based on this, the innovation aims to create a casting mold that can be easily dismantled and reassembled with simple measures using only a few different molded parts to form a rectangular casting mold can be composed of almost any length. According to the innovation, this is achieved in that in a casting mold of the type mentioned at the outset, each individual element has a ceiling that slopes downwards at an angle.

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loin sidewalls merges, in the case of the end elements also a third sloping downward slope, the two side walls at one end for training an end wall for the mold transversely connecting rear wall is provided that continues the slope of the Side walls like the width of the ceiling for all individual elements is executed the same that also along the free lower edges of each side and each rear wall one horizontally outwardly directed reinforcing strip is provided, whereby a composite mold circumferential reinforcing edge is formed that on each side facing a neighboring element each Single element extending along the end edge of the side walls and the ceiling, perpendicular to the. The interior of the projecting connecting flange is essentially borrowed constant rectangular cross-section is attached, and that each of the two adjacent Connecting flanges of two abutting individual elements in a groove of a perpendicular to the ceiling surface Engage connecting insert, wherein the groove is along the upper edge surface of the connecting insert extends and its height is slightly smaller than the inner height of the form elements, its width, however, at least in The bottom area of the casting mold corresponds to the free inner width there between the side walls. Through the innovation it is possible to use only two differently shaped elements (end pieces and intermediate element ^ square Build casting molds or rectangular casting molds of any length, but because of the only two different Shapes of the individual elements results in a relatively cheap storage.

A particularly simple embodiment of the connecting insert is that it is plate-shaped, in turn

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is preferably trapezoidal.

Advantageously, the groove at the top of each Connection insert formed by two rows of projections, the projections of one row offset to those of the other row are arranged. The projections are particularly advantageously in the form of Teeth formed, with, again preferably, the distances between two teeth of a row somewhat larger are formed as the length of a single tooth (viewed in the longitudinal direction of the same row).

In order to allow the poured material to flow through the connection inserts when pouring the mold easy to ensure, it is advisable to provide each connection insert with openings, these Breakthroughs are preferably square and / or triangular. This also becomes a Material and weight savings achieved.

It is particularly advantageous if the connecting insert consists of a trapezoidal, square and triangular shape The plate is provided with perforations and is limited at the bottom and at the top by a web, the lower web having extensions protruding beyond the plate on both sides. Advantageously is on the top of these extensions and / or on the top of the side surfaces facing the side walls of the mold of the connecting insert in question also formed a groove which the existing in the area there Sections of the adjacent connecting flanges of the two individual elements abutting here collects together, which in addition to the form fit on the top of the connecting insert also another form fit on the side and thus a special one

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good connection of the adjacent individual elements
can achieve. The intermediate students thus have the
Form a downwardly open gutter while each
End element in the form of a box open at the bottom
is formed, which in addition on its side adjoining the neighboring element without a boundary wall, ie
is open. The formation of the connection inserts in
Shape of a trapezoidal plate in which the short
Parallel side is on top and with the groove for capturing

the connecting flange sections present there is provided, while the lower parallel side is provided on both
Ends is extended and these extensions advantageously in incisions in the reinforcement strips
the adjacent elements can intervene, it turns out

as a particularly simple and effective design for the connection inserts.

The innovation is explained below with reference to the drawings

in principle explained in more detail by way of example. It f

% show: |

Ij! Fig. 1 is a perspective view of a y

Shape end element of an innovation %

proper mold; |

Fig. 2 is a perspective view of a |

Form intermediate element of an innovation | proper mold; 'l \

3 is a perspective view of a

Connecting insert; 5

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Figure 4 is a perspective view of an inserted into a mold end member Connector insert (prior to assembly with a second mold end member);

Fig. 5 is a longitudinal section through an approximately square innovation according to the mold, which consists of two joined mold end elements, and

6 shows a longitudinal section through a casting mold according to the invention, which consists of several Is composed of individual elements.

As FIGS. 1, 4, 5 and 6 show, a shape end element has a flat, essentially rectangular ceiling 1, which ^{merges on its sides into two downwardly sloping side walls 2 and 2 1} , as well as a likewise sloping downwardly , the two side walls cross-connecting rear wall 3, which is arranged so that the ends of the side walls open there into the rear wall. A horizontal reinforcing strip 4 extends outwards along the lower edges of these three walls and thus surrounds this end element on the outside on three sides. The reinforcing strip 4 is made relatively thick in order to achieve a high section modulus, its underside having longitudinal depressions 5 in order to save material and weight. The open front _; of the end element of the mold (that is, the side of the end element that rests against the following element) is provided with a connecting flange of essentially constant rectangular cross-section which projects vertically into the interior of the mold and which is used to connect two

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which serves the adjacent individual elements. The connecting flange 6 runs over the entire length of the Side walls and the ceiling, being at its two lower ends (i.e. where the side walls are below end and merge into the reinforcement edge) is cut out in the form of rectangular recesses 7, which also serve to connect the individual elements. There are also reinforcement ribs 8 on the inside of the form element both along the ceiling and along the side walls, possibly also on the rear wall, in turn to achieve a weight saving for the mold end element without, however, its resistance is weakened against external pressure.

In Figs. 2 and 6, an intermediate shape element is shown, which in turn is a flat, substantially rectangular Has ceiling 11, which merges on its sides in two side walls 12 and 12 ', which from the ceiling diverge obliquely downwards, with the front and the back of the intermediate mold element to rest against Neighboring elements remain open. This creates an intermediate element in the form of a trough section. Even here two reinforcement strips 14 and 14 'are provided below at the ends of the side walls, which extend along the Lower edges of the side walls extend horizontally outwards and, similar to that already described Form end element, are again provided with indentations on their underside, as is the case with the underside of the Reinforcing strips 4 was already described. The open sides of the intermediate mold element are along their Edges in turn are provided with connecting flanges 16 projecting perpendicularly into the interior of the mold, which form the connecting flanges 6 of the Foriti end elements. Even the two ends of each of these connecting flanges 16

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are, as in the case of the connecting flanges 6 of the mold end elements, with rectangular recesses 17 provided. The form of these recesses in the form intermediate and the form end elements is expressly lent refer to the graphic representation in the figures.

Further reinforcing ribs 18 are on the inside of the ceiling 11 and the side walls 12 and 12 'of the intermediate mold element attached, as can be seen in FIG.

As shown in FIGS. 3 to 6, two adjacent shaped elements are formed by a connecting insert . in the form of a trapezoidal plate 21 connected to one another, this plate 21 being a plurality of square and triangular shaped, penetrating the plate Has openings 22 and is delimited at the top by a straight web and at the bottom by a straight web 23. Of the The lower web is designed with a rectangular cross-section and at both ends over the trapezoidal boundary also provided with extensions 24 and 24 *; these extensions 24 and 24 'engage in the corresponding cutouts 7 and 17 of the mold end element or the mold intermediate elements. The openings in the Connection inserts not only enable the material to be poured to flow through into neighboring chambers, but they also result in a noticeable • borrowed material and weight savings. The lower bridge and the upper web 25 are made in one piece with the otherwise essentially trapezoidal connecting insert.

The upper web 25 also has an essentially right

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angular cross-section and is along its upper edge with a longitudinal groove 26, also of rectangular cross section, provided, the width of which is slightly larger than the common thickness of two connecting flanges 6 and 16, which are introduced together and side by side to connect two adjoining elements will. As a result, not only can two mold end elements be connected to form a common mold (see. Fig. 5), but also end and intermediate elements for forming a common shape (see. Fig. 6).

In the embodiment shown, the receiving groove 26 is formed between two rows of teeth 28, wherein the teeth in one row are offset from those in the other row. The rows of teeth are preferably directed upwards along the two outer edges of the upper web 25, the teeth 28 each Row are separated from one another by spaces 27. The spaces 27 are made somewhat larger than the size (measured in the direction of these distances) of the teeth in the same or the other row.

Various materials can be used to produce the molded elements, preferably thermoplastic Plastics such as polypropylene, polyethylene and high-density polyethylene can be used. The production of such plastic molds can easily be done in a known way, for example by injection molding, Rotational casting, structural foam vacuum casting or similar processes.

The side walls or rear walls emanating from the ceilings of the individual elements are in one provided for the Purpose of the casting mold suitable incline arranged from the ceiling surface to the outward incline.

Claims (10)

GEYPR, WAGfMj ^ NlS-Sj "PARTNER PATENTANWÄLTE ""' Desiouchpsstralk ¹ 60 · Postfach 400745 · 8000 Munich 40' Telephone 0B9 / 304071 * -Telex 5-216136 hage d -Telegram hageypatent -Telecopier 069/304071 Moshe Farhi Munich »den . ' 4a Givat Downs Street August 27, 1980 Haifa, Israel Dr.G / 2 / EG u.Z .: GM 175 / 1-80M S c h ut ζ ä .ή s ρ .r. u c h e ( 1. ) Plastic casting mold composed of individual elements for the production of ribbed ceilings made of concrete, in which two end mold elements are connected to one another directly or with the interposition of one or more intermediate mold elements, with two individual elements lying next to each other on their sides facing each other by a connecting insert are connected to one another, characterized in that each individual element has a cover (1; 11) which ^{merges laterally into sloping downwardly sloping side walls (2, 2 1} ; 12, 12 '), with a third in the case of the end elements sloping downwards, the two side walls (2, 2 ') are provided at one end of which transversely connecting rear wall (3) and the incline of the side walls and the width of the ceiling are the same for all individual elements, that along the free lower edges of each side (2, 2 ¹ ; 12, 12 ') and each rear wall (3) a horizontally outwardly directed reinforcing strip (4, 4 ¹ ; 14, 14') - 2 - -2- is seen, whereby when the mold is assembled, a reinforcement edge running around the mold is formed, that on each side facing a neighboring element of each individual element along the end edges of the Side walls (2, 2 '; 12, 12') and the ceiling (1; 11) extending, The connecting flange (6; 16) protruding perpendicularly into the interior of the mold is essentially constant rectangular cross-section is attached, and that the two adjacent connecting flanges (6, 16) of two adjacent individual elements engage in a groove (26) of a connecting insert (21) which is attached perpendicular to the ceiling surface (1; 11) and which extends along its upper edge surface, the height of the Connection insert (21) is slightly smaller than the inner height of the shaped elements and its width, at least in the bottom area , corresponds to the shape of the inner width there between the side walls (2, 2 '; 12, 12'). 2. Casting mold according to claim 1, characterized in that each connecting insert (21) is plate-shaped. 3. Casting mold according to claim 1 or 2, characterized in that the groove (26) at the top Edge of each connecting insert (21) is formed by two rows of projections (28), the projections (28) of the two rows are arranged offset to one another. -3- -3- 4. Casting mold according to claim 3, characterized in that the projections (28) in the form are formed by teeth. 5. Casting mold according to claim 4, characterized in that g e k e η η, that the distances between two teeth (28) of a row are made slightly larger than the length of a single tooth (28). 6. Casting mold according to one of claims 1 to 5, characterized in that each connecting insert (21) is trapezoidal. 7. Casting mold according to one of claims 1 to 6, characterized in that each connecting insert (21) is provided with openings (22). 8. Casting mold according to claim 7, characterized in that g e k e η η, that the openings (22) are square and / or triangular. 9. Casting mold according to claim 6 and claim 8, characterized in that the trapezoidal Connecting plate (21) with square and triangular openings (22) below and above through each a web (23; 25) is delimited, wherein the lower web (23) on both sides over the plate (21) protruding extensions (24, 24 '). 10. Casting mold according to claim 9, characterized in that g e k e η η, that on the top of the extensions (24, 24 ') and / or the side walls (2; 12) to- -4- -4- turned side surfaces of the connecting insert (21) a groove is also formed, in which sections of the connecting flanges (6, 16) of the adjacent individual elements that are present in the area there intervene together. -5-