FR2612545A1 - Reusable formwork modules making it possible to form varied architectural shapes - Google Patents

Abstract

The device comprises a metal panel 1 serving as a support for small orientable, preferably hydraulic, jacks 2. The thrusting arm of each jack 2 ends with a small square plate 3, articulated on a ball joint 4. The small plates 3 partially overlap and thus form a surface which contains the material to be cast. The shape of this surface can be varied according to the orientation of each jack 2, according to the length given by each jack to the thrusting arm and according to the inclination of each small plate 3. The jacks 2 and the ball joints 4 carrying the small plates 3 are connected electronically to a computer processing unit 9 which automatically determines and adjusts, for each one, their position in space according to the desired shape. The device according to the invention can be used in particular in architectural applications including curved surfaces or the juxtaposition of plane surfaces such as curved walls, surfaces, skew structures, round columns or columns having facets with bases and capitals, bas-reliefs, cant walls, vaults, staircases, etc.

Description

 DESCRIPTION OF THE INVENTION.

 The present invention relates to a device making it possible to produce various architectural forms from formwork modules which can easily assume curved and straight, convex and concave forms.

 Forms of formwork are traditionally either made to measure (in wood, for example), which requires significant work; or they are executed once and for all (in plastic, for example), which leads to the production of standardized architectural forms; or else they can be modified from one time to the next by methods such as bending by clamping, which nevertheless remains relatively limited.

 The device according to the invention allows the same formwork module to be reused while changing mmse. The same module can therefore carry out the formwork in turn / curves or straight, convex or concave. It can also combine simultaneously these four primordial forms, according to the greatest variety.

Indeed, according to the device, each shape is defined by small juxtaposed plates which are carried by small cylinders
These allow you to vary at will the position that each plate occupies in relation to its neighbors. This creates an enveloping surface allowing an approximate definition of the curvatures, which can be improved by the fact that the surface created by the pads of a resistant plastic foam fabric, 1.5 to 3cm thick, and not adhering to the material to be shuttered.

 The computer processing of the data relating to the position that each plate occupies in the space, allows the rapid realization of all the forms.

 Figure 1 shows, in horizontal section, the device according to the invention.

 Figure 2 shows, in vertical section, how a module is stabilized on the ground. It also shows how the device makes it possible to make a pillar.

 Figures 3 and 4 show an example of the use of several modules for pillar formwork.

 Figure 5 shows, in section, the shape of the plates allowing their overlap.

 The device represented in FIG. 1 comprises a metal panel (1) serving as support for small orientable jacks (2), preferably hydraulic. The pushing arm of each jack (2) ends in a square plate (3) of reduced dimension (approximately 1dm2), articulated on a ball joint (4). The plates (3) are screwed on the axis of the ball joint (4) and can be replaced if necessary by plates of different shapes and sizes.

 The plates (3) are designed in such a way that when they are in a plane parallel to the metal panel (l), the jacks (2) being perpendicular to this support, they partially overlap, thus constituting a surface which contains the formwork material. Their external surface is made of a substance, preferably plastic, which does not adhere to the formwork material.

The set of plates (3) constitutes a surface which can vary in shape according to the orientation of each cylinder (2), according to the length given by each cylinder (2) to the thrust arm and according to the inclination of each plate (3 ).

 Each module, fixed on a rigid metal base (6) is made stable by oblique metal bars (7) in number proportional to the size of the module and bearing on the metal panel (1) and the base (6). variant, the base (6) is removable and tiltable and the retractable metal bar (7) to allow oblique or horizontal use of the module.

 Adjustable metal fasteners (8) allow the modules to be fixed to each other, giving cohesion to the whole. In addition, the modular ones are designed to be stacked.

 The jacks (2) and the ball joints carrying the plates (3) are electrically connected to a computer processing unit (9) which automatically establishes and adjusts their position in space according to the desired shape.

The inserts shown in Figure 5 are cut to
"mid-wood" so as to allow their overlap while maintaining
their surface in the same plane. The notches are alternated with a
edge of the plate (10) at its opposite edge (11).

The device according to the invention finds its particular
use where, in architecture, surfaces intervene
curves or the juxtaposition of flat surfaces such as walls
curves, left surfaces, round or faceted pillars with bases
and capitals, projections, bas-reliefs cut sides, vaults, stairs, etc ...

Claims (10)

 1) Device for creating reusable formwork forms characterized by the fact that it comprises a metal panel (l) serving as support for small jacks (2) whose arms end in orientable ball joints (4) on which are screwed small plates (3) overlapping each other so as to create a surface which can contain the material to be shuttered (5)  2) Device according to claim 1 characterized in that the jacks (2) are orientable and thus allow to bring or move away the plates (3) from each other in order to adapt exactly to the dimensions of the shape.  3) Device according to claim 1 or claim 2 characterized in that the variable length of the cylinder arms (2) and the variable inclination of the plates (3) make it possible to produce forms of curved and flat, convex and concave forms.  4) Device according to any one of the preceding claims, characterized in that the plates (3) are screwed onto the ball joints (4) and can be changed by plates of different shapes and dimensions.  5) Device according to claims 1 and 4 characterized in that the plates (3) are cut "semi-wood" on the four sides so as to allow their overlap while maintaining their surface in the same plane, the notches being alternated from one edge of the plate (10) to its opposite edge (ll).  6) Device according to any one of the preceding claims, characterized in that the plates (3) are coated with a preferably plastic substance which does not adhere to the material to be shuttered.  7) Device according to claims 1 and 3 characterized in that the surface formed by the pads can be coated with a thick foam fabric preferably plastic, to improve the definition of the curvatures.  8) Device according to any one of the preceding claims, characterized in that the jacks (2) and the ball joints (4) are electronically connected to an infortic treatment unit (9) so that they are adjusted automatically according to the plans of architecture.  9) Device according to claim 1 characterized in that the metal panel (l) comprises a metal base (6) connected to the panel (l) by oblique metal bars (7) in number proportional to the size of the module.  10) Device according to claim 9 characterized in that the base (6) is removable and tiltable and that the slashes (7) are retractable.