ITPS20130009A1 - PREFABRICATED PANEL STRUCTURE FOR FORMWORKS ENTRY AND RELATED PRODUCTION PROCEDURE - Google Patents

Description

PATENT APPLICATION FOR INDUSTRIAL INVENTION

C, TITLE

PREFABRICATED PANEL STRUCTURE FOR DROWING IN FORMWORK AND RELATED PRODUCTION PROCESS

O. RLASSIINTÒ

Prefabricated panel structure for drowning in formwork, of the building type in "sandwich" of steel wire and expanded plastic material formed by a sheet-like core {2) of expanded plastic material, usually polystyrene, cages it between two nets (3r 41 of electro-welded steel wire, mutually joined, also by electro-welding. by segments of steel wire (5) to constitute crosspieces [5) piercing said core (2.1. comprising a plurality of folds (6) with extrovert development, on at least part of the longitudinal warp threads (3Ar 4A) suitable for interacting in use with external surfaces counteracting those of the panel (1). substantially parallel to it, to form spacers between the body of the panel (1) from the internal walls of the formwork or formwork, for the purpose of correct relative positioning in the lowering of the cement conglomerate for installation in order to achieve adequate concrete cover, relative production process operation in automatic machines producing continuous metal nets, comprising the intervention of a battery of automatic folding means upstream of the sianone for welding the crosspieces (5> T preferably on part of the longitudinal warp threads (3A, 4A> che. preferably at traction steps, they deform the linearity of the longitudinal threads of. warp (3A, 4A) creating a fold (6) with height extroverted to the plane of the longitudinal warp threads (3A, ΊΑ) in relation to the "sandwich" (1), while the upstream tensioned means are programmed to loosen the grip of tension on segment of the longitudinal warp threads (3 A.

4A) corresponding to the linear development of the fold (6).

DESCRIPTION

accompanying the patent application for an industrial invention concerning e

TITLE

PREFABRICATED PANEL STRUCTURE

FOR DROWING IN FORMWORK

AND PROCESS OF RELATIVE PRODUCTION

DETAILED DESCRIPTION

Development of the technique

Building panels in "sandwich" made of steel wire mesh and expanded plastic material are known, formed precisely by a core shaped sheets of expanded plastic material, for example and preferably polystyrene, with different densities depending on the intended use of the building de! panneilo, caged between two nets of electro-welded steel wire, mutually joined, also by electro-welding, by steel wire segments to form crosspieces perforating the said core.

The monolithic artifact thus composed can be placed modularly in the dwelling and covered with plaster, retained by the metal nets, to constitute prefabricated walls with excellent characteristics of resistance, anti-seismicity, thermal insulation, soundproofing and fireproofing.

Furthermore, a twin pair of such panels can, with excellent results, be used as a formwork so to speak "disposable", or as a container for pouring concrete between the two panels, which remain merged with it, incorporated to co-operate in the constitution of the wall, for this purpose coated with plaster on the external faces in the same way as the single panel.

A further method of use involves the insertion of the panels into the traditional form boxes or formworks for retaining the concrete castings to be removed after setting, to reinforce, lighten, insulate and soundproof the resulting walls.

The building panels in "sandwich" of steel wire mesh and expanded plastic material are industrially manufactured by automatic "sewing" machines, to which the "sandwich" is fed in successive steps and which insert metal wires through the sheet of material expanded plastic, to cut the inserted segments and weld them to the nets on the two sides, so as to constitute the joining crosspieces to constrain the structure, as described and illustrated in the patent documents IT 1,213,688 (application IT 3613 A / 87), UP 0308837A1, IT L268.50I (application IT PS 1993AOOOO 1 1), EP 0631830A1. IT 1.364.284 (application PS2005A000015) and EP 1733820A t in the name of the same current applicant, to the examination of which reference is made for better intelligence de! technological context.

Upstream of these sewing machines, the metal nets are produced continuously by automatic machines, such as those illustrated in patent documents no. W02009 / 037545A2, WO20 11/001341 A 2, WO20I 1 / 158269A2 and WO20I2 / 101559A1 in the name of the same current applicant, to the examination of which reference is made for better intelligence of the technological context, which prepare a plurality of metal warp threads, drawing them in steps from coils, straightening them and arranging them parallel in the plane, mutually equi-interdistanced or not, and then orthogonally electro-welded, at each successive step of advancement, a plurality of consecutive crosspieces of metal wire, tendentially equi-spaced or in any case with cyclic intervals repeated.

Identification of the specific technical problem

In the aforementioned form of use of the building panels in "sandwich" of steel wire mesh and expanded plastic material which provides for the insertion of the panels within the traditional formworks or retaining formworks of the concrete castings to be removed after setting, to reinforce , lighten, insulate and soundproof the resulting walls, the panel is subject to forces, in constant casting of the cement conglomerate that can alter its position leaning against the walls of the box.

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To remedy the inconvenience, or in order to have an appropriate residual

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maintenance of the positioning of the bars in the concrete castings for the construction of reinforced concrete products, such as tips, U-bolts, fins and thicknessing trestles.

However, the correct and complete location and distribution of these installation thicknesses requires time and the use of workers, which is obviously expensive, as well as not in line with the philosophy of reinforcement and lightening de! concrete products with building panels in "sandwich" of steel wire mesh and expanded plastic material, which pursues the greatest possible immediacy.

Aims of the invention

The main purpose of the present invention is, in this framework, to provide a building panel in "sandwich" of steel wire mesh and expanded plastic material specifically intended for the use of reinforcement and lightening of concrete products, or intended for be housed in formwork and formwork to undergo pouring of drowning within cement conglomerate, without disrupting its optimal median location, or in any case with an adequate layer of iron cover, regardless of manual placement and maintenance interventions in order for distribution of thickening means.

Another object of the present invention is to achieve the preceding object by means of a building panel which maintains all the characteristics of strength, lightness and simplicity of building panels in "sandwich" of steel wire mesh and expanded plastic material according to the known art.

Yet another object of the present invention is to achieve the preceding objects by means of a panel which can be produced through the niches for the production of metal nets and the relative stitching of a paired pair on a plate of plastic material according to the known art, with a process which is suitable for these known production techniques without aggravating them or imposing the adoption of complicated operating means and / or overturning the operating cycles according to the known art, but, conversely, easily adaptable to existing lines and integrable therein.

A further object of the present invention is to achieve the previous purposes through a building panel and a process for its implementation that are simple and functional, safe in use and relatively cheap in cost in consideration of the actual results achieved with them.

Abstract summary of the solution concept

These and other objects are still achieved with the prefabricated panel structure for embedding in the formwork according to the present invention, of the building type in a "sandwich" of steel wire mesh and expanded plastic material, formed by an iastriformc core (2) of expanded plastic material, usually polystyrene, caged between two nets (3, 4) of electro-welded steel wire, mutually joined, also by electro-welding, by steel wire segments (5) to form crosspieces (5) piercing said core ( 2), comprising a plurality of folds (6) with an extroverted development, on at least part of the longitudinal warp threads (3A, 4A), suitable for interacting in use with external surfaces opposite those of the panel (1), substantially parallel to it , in order to form the spacers of the body of the panel (11 from the internal walls of the formwork or formwork, for the purpose of correct relative positioning in the casting of the cement conglomerate for installation in order to obtain an adequate concrete cover; as well as with the relative production process in the automatic machines producing metal meshes in continuous, comprising the intervention of a battery of automatic folding means upstream of the welding station of the crosspieces (5). preferably on part of the longitudinal warp threads (3A, 4A) which, preferably at intervals of traction longitudinal warp yarns (3A, 4A) creating a fold (6) with height extroverted to the plane of the longitudinal warp yarns (3A, 4A) in relation to the "sandwich" (ì), while the upstream tensioning means are programmed to loosen the tensioning of a segment of the longitudinal warp yarns (3A. 4A) corresponding to the linear development of the fold (6).

Identification of the attached drawings Further characteristics and advantages of the prefabricated panel structure by drowning in the formwork and of the relative production process according to the present invention will become more evident from the following detailed description of a preferred but not exclusive embodiment thereof, represented only an exemplary and non-limiting title in the three attached drawings tables, in which: Figure 1 is a longitudinal perspective view of a prefabricated panel for embedding in the formwork according to the present invention;

Figure 2 illustrates it in a transverse perspective view;

Figure 3 illustrates it in side view.

Static description of the preferred example of embodiment With reference to these figures and in particular to figure I. with! a prefabricated panel for embedding in the formwork according to the present invention is indicated as a whole, of the building type in "sandwich" of steel wire mesh with a core of expanded plastic material, formed precisely by a sheet 2 of expanded plastic material , preferably polystyrene of any density suitable for the purpose, caged between two nets of electro-welded steel wire 3 and 4, reciprocally joined also by electro-welding by means of steel wire segments 5 to constitute crosspieces 5 perforating said core 2.

The upper 3 and lower 4 nets are respectively constituted by a plurality of longitudinal warp yarns 3A and 4A. mutually equally interspaced. or regularly interspaced in pairs or groups, transversely linked by transverse weft threads 3B and 4B. equi-intervals or in any case with cyclically repeated intervals.

On at least part of the upper 3A and lower 4A longitudinal warp threads a plurality of folds 6 are made with an extroverted development which, in the embodiment described, assume the shape and shape of simple waves.

The realization of these folds 6 is carried out with the method according to the same present invention, which provides for the insertion of a further operating station integrated on the line of the automatic machines producing continuous metal nets according to the known technique, preferably as illustrated in the patent publications. n. W02009 / 037545A2, W020M / 001 341 A2, WO20I I / 158269A2 and W02012 / I01 559A I in the name of the same current applicant.

Said additional operating station can be constituted, for example, by a pair of batteries of automatic folding means, appropriately held by means of support elements above and below the planes defined by the plurality of parallel longitudinal warp threads upper 3A and lower 4A, each of these folding means being associated with appropriate actuator means, for example pneumatic, sub-faction of which alternatively engage and disengage from above and from below, with an apical component of lateral movement, the transit channel of the upper 3A and lower 4A longitudinal warp yarns, and at each intervention, by means of appropriate jaws, activated for example by pneumatic means, they clamp the longitudinal warp threads upper 3A and lower 4A, in the individualities and in the positions dictated by computerized logic.

These interventions of the folding means preferably carried out on part of the upper 3A and lower 4A longitudinal warp yarns. at each traction pitch to the maximum, but preferably with interspersed traction pitches, they deform the linearity of some of the upper 3A and lower 4A longitudinal warp yarns, creating an extroverted fold 6 with a fixed height on the plane of the upper longitudinal warp yarns 3A and lower 4A, while the upstream tensioning means are programmed to loosen the tension grip on the segment corresponding to the linear development of the fold 6, for the functions that are specified below.

Dynamic description of the preferred example of embodiment Having thus completed the static description of a preferred example of embodiment of the prefabricated panel structure for embedding in the formwork and of the relative production process according to the present invention, as follows in fact the dynamic one passes to operate, or its functioning:

the panels 1 for embedding in the formwork in "sandwich" of steel wire mesh and expanded plastic material can be produced by automatic lines according to the known technique, with the sole integration of a simple bending station, functional to the advancement steps of the product, positioned upstream of the welding station of the transversal weft threads 3B and 4B to the longitudinal warp threads 3A and 4A, and with simple expansion and adjustment of the computerized logic that presides over the operation of these automatic lines.

The resulting panel 1 can be used for insertion into formworks and unforms, guided in the insertion by the oversized folds 6, which slide it against the inner walls of the formwork, and by the same folds 6 considered medially in an optimal intermediate position during the casting phase. , avoiding on all its extension, on both sides and without manual intervention of any kind, displacements of any kind.

Implementation alternatives

It is obvious that in alternative embodiments, still falling within the concept of solution underlying the example of embodiment illustrated above and claimed below, prefabricated panel structure for drowning in formwork and the relative production process according to the present invention can also be implemented differently and realized, with technical and mechanical equivalents or supplementary measures still falling within the same illustrated above and the concept of solution claimed below.

In particular, the folds can assume any alternative conformation and shape, preferably functional to the sliding of the panel within the formwork or formwork without jamming against the relative internal walls.

Advantages of the invention

As is evident from the preceding detailed description of a preferred but not exclusive embodiment, the prefabricated panel structure for drowning in the formwork and the relative production process according to the present invention offer the advantages corresponding to the intended purposes and others besides: in fact, a simple and effective concept of solution to arrive at a product suitable for reinforcing concrete in effective and functional terms to the building technique that uses "sandwich" panels of steel wire mesh and expanded plastic material, both at the production level and at level of installation.

Scope of the protection invoked

Having thus described the prefabricated panel structure for embedding in the formwork and the relative production process according to the present invention with reference to preferred embodiments, it will be obvious to want to protect all possible embodiments with variants of normal implementation for those skilled in the art. , which do not modify the invention without departing from the purposes envisaged therein; by this it is meant, both in the foregoing description and in the following claims, to protect all the embodiments and variants that fall within the concept of solution, in the spirit and in the purposes of the invention itself.

Claims (4)

CLAIMS 1) Prefabricated panel structure for drowning in formwork, of the building type in "s sandwich" of steel wire mesh and expanded plastic material, formed by a sheet-metal core (2) of expanded plastic material, usually polystyrene, caged between two nets (3, 4) of electro-welded steel wire, mutually joined, also by etching, by steel wire segments (5) to form crosspieces (5) piercing the delta core (2). characterized in that it comprises a plurality of folds (6) with an extroverted development, on at least part of the longitudinal warp threads (3A, 4A). suitable for interacting in use with superile! external counterfeit those of the panel (I), substantially parallel to it, to form spacers of the body of the panel (1) from the internal walls of the formwork or formwork, in order to correctly position relative in the casting site of the cementitious conglomerate for installation for obtaining an adequate concrete cover. 2) Panel structure as per the first claim, of the type formed by a sheet 2 of expanded plastic material, preferably polystyrene of any density suitable for the purpose, caged between two nets of electro-welded steel wire 3 and 4, mutually joined also by electro-welding by means of steel wire segments 5 to constitute crosspieces 5 perforating the delta core 2, said upper 3 and lower 4 meshes being respectively constituted by a plurality of longitudinal warp yarns 3A and 4A, mutually equid-interspaced, or regularly inter-spaced in pairs or groups, transversely linked by transversal weft threads 3B and 4B, equidistant or in any case with cyclically repeated intervals, characterized by the fact that on at least part of said upper 3A and lower 4A longitudinal warp threads a plurality of development folds 6 are made extrovert substantially shaped like a wave with an acute or obtuse crest or flattened to. 3) Process for the production of panel structures as per the first and / or second claim in the automatic machines producing continuous metal nets, characterized by the fact of comprising upstream of the welding station of the crosspieces (5) with reference to the direction of advancement a pitches of the longitudinal warp tilts (3A, 4A), intervention of a battery of automatic folding means, preferably on part of the longitudinal warp tilts (3A. 4A) that. preferably with interspersed traction steps, they deform the linearity of the longitudinal warp yarns (3A, 4A) creating a fold fé) with an extroverted height to the plane of the longitudinal warp yarns (3A, 4A) in relation to the "sandwich" {I}, while the upstream tensioning means are programmed to loosen the tensioning grip on the segment of the longitudinal warp yarns (3A. 4A) corresponding to the linear development of the fold (6). 4) Process for the production of panel structures according to the third claim, characterized in that it comprises the insertion of a further operating station integrated on the line of the automatic machines producing continuous metal mesh according to the known technique upstream of the welding station of the crosspieces ( 5) with reference to the direction of advancement of the longitudinal warp yarns (3A, 4A), this additional operating station being constituted by a pair of batteries of automatic folding means, held by means of support elements above and below the planes defined by the plurality of parallel longitudinal upper (3A) and lower (4A) warp yarns, each of said folding means being associated with appropriate actuating means. preferably pneumatic, under the action of which they alternately engage and disengage from above and from! low, with a lateral movement component, the transit channel of the upper (3A) and lower (4A) longitudinal warp yarns, and at each intervention, by means of jaws, preferably activated by pneumatic means, clamp the upper longitudinal warp yarns ( 3A) and lower (4A), in the individualities and locations dictated by computerized logic integrated with the entire production line that! conempo controls the slowing down of the tensioning device to the tensioning means upstream on the segment corresponding to the linear development of the fold (6). LEGEND OF THE NUMBERS 1) panel as a whole 2) expanded polystyrene plate 3 J upper net 3 A) longitudinal warp threads of the upper net 3B) transversal weft threads of the upper net 4) lower net 4A) longitudinal warp threads of the lower net 4B) transversal weft threads of the lower net 5) sleepers 6) creases