FR2800648A1 - Lattice plate press, for forming parallel V-channels without welding, has V-section press tools deforming flat plate laid on notched template - Google Patents

Abstract

A template (2), embodying a set of regularly notched parallel steel strips standing on their unnotched edges, is welded to the top face of a steel base-block (1). The notches conform in depth, profile and spacing to the channeled configuration to be impressed on the work-pieces. Each transverse row of notches falls immediately under one of e.g. 7 press tools (4), extending across all the rows, whose V-shaped cross-section corresponds to the notch profile. The tools are suspended in a robust frame (3), at heights determined by each tool's actuating hydraulic ram (5). An electronic controller (6) fixed to the base gives individual control over the rams, for each of which an operating lever (7) is provided. Each work-piece, a flat plate, is laid on the template and positioned against stops. The operator lowers the press tools and forms the V-channels either simultaneously or in succession. The force applied to each tool is sufficient to form the required folds without damaging the plate.

Description

The present invention relates to a device for folding seamless metal lath plates in a very precise configuration and without damaging them.

The folding of these metal laths is traditionally carried out manually, this entailed a considerable loss of time for implementation on the site and more often than not the work carried out did not comply with the requirements requested.

 Some machines have the ability to bend various materials (wood, steel, aluminum, and many others), but they are unable to do this work because they do not have the proper configuration and they are also too powerful to be able to fold without tearing the seamless metal lath plates which are very fine materials and therefore very fragile.

The device according to the invention overcomes this drawback. According to a first characteristic, it in fact comprises a steel base making it possible to stabilize the machine on which a template has been welded identically shaped according to the first model of the metal lath plate to be obtained during folding.

This replica allows to receive the metal plates which will be placed against a stop in order to always keep the same type of folding. On the steel base, a sufficiently rigid metal frame is fixed to hold the punches positioned at a very precise spacing to respect the desired configuration.

These punches produced according to the exact replica of the requested corrugations, will intervene during the folding to give the sheet of metal lath the hoped shape by coming to fit in the template welded on the steel base of the machine.

During this operation, these are hydraulic cylinders which manage the movement of the punches by allowing them either to descend or to ascend.

The power of the latter is calculated to allow the metal lath plates to be folded without damaging them.

These hydraulic cylinders are connected to an electronic central unit which can control them using levers belonging to the electronic unit.

 It is located along the machine and it is also welded to the steel base to give the user the possibility of working in the best conditions and also to facilitate the extraction of the parts after folding. Each controller is numbered according to the punch it controls, so all models are independent of each other.

 Thus the work of the user is clearly simplified because it is enough for him to push a lever to carry out the folding, it is also faster and more precise. The accompanying drawings illustrate the invention. FIG. 1 represents in section, the device of the invention.

2 shows in section, the folding of the metal laths With reference to these drawings, the device comprises a steel base (1) for stabilizing the machine on which has been welded a template (2) shaped identically according to the model of the metal lath plate to be obtained when folding.

This replica allows to receive the metal plates (8) which will be placed against a stop in order to always keep the same type of folding. On the steel base (1), a sufficiently rigid metal frame (3) is fixed to retain the punches (4) positioned at a very precise spacing to respect the desired configuration.

These punches (4) manufactured according to the exact replica of the requested corrugations, will intervene during the folding to give the sheet of metal lath the hoped shape by coming to fit in the template welded on the steel base of the machine.

During this operation, it is hydraulic cylinders (5) which manage the movement of the punches by allowing them either to descend or to ascend.

The power of the latter is calculated to allow the metal lath plates to be folded without damaging them.

These hydraulic cylinders (5) are connected to an electronic central unit (6) which can control them by means of handles (7) belonging to the electronic unit (6).

Some steps necessary for the smooth running of the work in order to better understand the operation of the machine.

The metal lath plate (8) is positioned on the template (2), shaped identically according to the model to be obtained during folding, the levers (7) of the electronic control (6) actuate the hydraulic cylinders (5) which bring down the punches (4) fixed on the metal frame (3), which crush and give shape to the metal lath by coming to fit in the template (2).

By way of nonlimiting example, the machine will have dimensions of the order of 3m for the length, 1m for the width and 2.5m for the height. The template will have dimensions of the order of 2.5m for the length and 0.6m for the width.

The punches will have dimensions of the order of 0.6m for the width and 0.2m for the length, they will be 7, the cylinders will also be 7.

The device according to the invention is more particularly intended for folding seamless metal battens.

Claims (5)

1) Device for folding seamless metal lath plates characterized in that it comprises a steel base (1) making it possible to stabilize the machine on which a template (2) has been welded identically according to the model of the metal lath plate to be obtained during folding. On the steel base (1), a sufficiently rigid metal frame (3) is fixed to retain the punches (4) positioned at a very precise spacing to respect the desired configuration. These punches (4) manufactured according to the exact replica of the requested undulations, will intervene during the folding to give the metal lath plate (8) the hoped shape by coming to fit in the template welded on the steel base of the machine . During this operation, it is hydraulic cylinders (5) which manage the movement of the punches by allowing them either to descend or to ascend. These hydraulic cylinders (5) are connected to an electronic central unit (6) which can control them by means of handles (7) belonging to the electronic unit (6). 2) Device according to claim 1 characterized in that the template (2) is shaped identically according to the model of the metal lath plate to be obtained during folding. 3) Device according to claim 1 and claim 2 characterized in that the punches (4) are manufactured according to the exact replica of the requested corrugations, and intervene during folding to give the sheet of metal lath the expected shape coming from fit into the template welded to the steel base (1) of the machine. They are also positioned at a well-determined spacing in order to comply with the prescriptions. 4) Device according to any one of the preceding claims, characterized in that the power of hydraulic cylinders (5) is calculated to allow bending of the metal lath plates without damaging them. 5) Device according to any one of the preceding claims, characterized in that the electronic control unit is configured to direct the descent or the ascent of all the jacks, either by actuating them all at the same time or one after the other.