Tooling for molding with keys particularly for the production of air intakes without clips

Tooling for molding with keys, said tooling comprising:

• a mandrel with keys comprising four sectors, namely a fixed sector flanked by two articulated sectors that are symmetrical and articulated on the fixed sector and a key sector independent of the other sectors and insertable between the two articulated sectors;
• means to lock in the sectors in abutted position, the mandrel being thus self-supporting;
• a control device for controlling the relative movement of the sectors to place them either in a molding position by abutment of all the sectors, or in an un-molding position by retraction of the three movable sectors inwardly of said mandrel, the control device being disconnectable from the mandrel and,
• means permitting the transport and the rotation of the mandrel in its molding position, constituted by two removable flanges adapted to the two ends of the mandrel, said flanges being connected by securement ties and provided in their center with a socket for connection to drive means for said mandrel in rotation about its axis.

Tooling for molding with keys for producing substantially tubular air intakes without clips, said tooling comprising:

• a self-supported mandrel having at least three sectors, said at least three sectors comprising at least two articulated sectors retractable toward a center of said mandrel and a key sector that is movable independent from said at least two articulated sectors and insertable between said at least two articulated sectors, said at least three sectors abutting together in a molding position, to define, by their external surfaces, a continuous surface corresponding to an internal surface of an air intake;
• locking elements to lock said sectors to each other in said molding position;
• and
• a control device, removably connected to said mandrel for the relative displacement of said at least three sectors to place said at least three sectors either in said molding position, or in an un-molding position by retracting said sectors inwardly of said mandrel.