Method and device for shaping and locking shells
AssigneeIP3 Group
InventorJacques Le Monnier
Life of this patent
Estimating the term…
Abstract
Technical device for shaping. Characterized in that said machine shapes shells simply by means of a positive or negative thrust driving into what is referred to as a funnel a precut and pre-scored sheet. The pushing or pulling energy forces the sheet to deform and then to adopt the desired shape. The widening, situated at the top of said funnel, allows the sheet to be positioned and then guided into the restriction opening. The deformations are oriented by fixed supports situated on the path of said funnel. As it gradually passes through the restriction, the shell takes shape with its sides being folded down vertically and its four corners being folded towards its inner centre. Closure with the locking key by guided pressure.
Claims6
A method for manufacturing a so-called block (14) consisting of a shell (9b) produced from a flat element (9a), characterised in that it comprises the following steps:
- Step one (2) being the application of a vertical differential force (16a) between the centre (12) and the edges (8) of the sheet (9a) in order to form a shell (9b) (9d), by means of a forming tool provided with at least one pressure (16a) or traction (16b) element, at least one pressing or gripping tool (22) and at least one shaping element (5) of the angular type and at least one shaping element of the runner type (11);
- the method characterised in that the shell (9b) is formed by means of folds on the shaping groove lines (6a) (6b), a method provided with at least one pressure or traction movement, making it possible to fold the sides (8) towards the centre (12) of the shell (9d), therefore taking place by means of folds on straight groove lines (6a) (6b) and by folding the corners (7) towards the inside of centre (12), lifting the sides (8) by mechanical forces and placing the corners (7) inwards by mechanical forces, while passing gradually through said funnel (27), making it possible to form the shell (9d) structurally;
- the shell (9a) consisting of any material provided with memory effects and able to partially resume its flat shape or partially its initial shape, once the pressure and holding forces have been cancelled out;
- a second step (4) being the insertion of a locking key (15b) in the shell (9d), the shell passing under said shaft (16), by means of a vertical differential force (20) between the centre (18) and the folds (17) in order to lock and form said block (14);
- the locking key coming to slide in the internal space in the form of a shell (9d) of the cubic type, the latter not being limitative in terms of shape and dimensions, the locking key (15b) by means of a descending impetus in the shaft (16), by means of a constant pressure element pressing on the centre (18) of the locking key in order to achieve the insertion of its flaps (17) inside the shell, the flaps (17) being folded from grooves in the form of straight lines and delimiting the centre (18);
- locking of the volume by means of the locking key (15b) being able to be done without staples, without gluing, without adhesive, preventing unfolding and forming the block (14);
- translated in that the locking of the corners (7) of the triangle type, non-limitative in terms of shape and dimensions, folded from grooves and locked in the cubic shape, by means of the fitting of the flaps (17) gripping together, the gussets and corners (7), thus keeping the sides (8) of said block vertical;
- the method characterised in that the forming of the locking key is done by folding and placing of the flaps (17) making it possible to structurally form the locking key (15b) sliding inside said shaft (16) making it possible to keep vertical the flaps (17) folded from grooves in the form of straight lines and delimiting the centre (18) against the walls of the shaft and being inserted by a pressing means (20) inside the shell in order to form the block (14);
- the sides (17) descending in the shaft before the centre (18);
- and
- the flaps (17) naturally remaining pressed against the walls of the shaft, the locking key being made from any material provided with memory effects partially resuming a flat shape without pressure or holding force.
A device for manufacturing a block consisting of a shell (9d) produced from a flat element (9a) and a locking key (15a), being scored and/or pre-grooved, characterised in that it comprises a first tool (2) provided with at least one pressing (16a) or traction (16b) element bearing on any tool (22) and at least one shaping element of the corner (5) and/or runner type, with curved edges (11) for applying a differential vertical force between the centre (12) and the corners (7) and the edges (8) of the sheet (9a) and causing the folding of the edges (8) from the grooves (6b) in the sheet (9a) (9b) with respect to the centre (12) of the same sheet in order to inwardly fold the corners (7) from the grooves (6a) helping to vertically lift the edges (8) of the sheet, the corners and the edges being integral, and thus to gradually form the cubic shape (9d) and, all along the descent of this same sheet being formed in said funnel in order in the end to become a shell (9d), ready to receive the locking key as well as accessories and then a second tool (4) for inserting a locking key (15b) by at least one vertical pressure means (20) in said shell (9c) in order to close the volume of the shell by fitting together and to create said block (14)
- a remarkable manufacturing device able to use neither glue nor adhesive nor staple or any supplementary optional accessories thus forming said block;
- and
- a device for volume shaping by fitting together flaps (7d), folded from grooves delimiting the centre (18), flaps passing through the shaft before the centre (18) of the locking key (15b) and these entering the shell (9d) first, once the corners (5) are folded inwards and the edges (8) raised by pressure devices or forces.
Dependencies are inferred from the claim text.