A folding-up system intended to fold an end section of a cylindrical wall of a tire carcass assembly around a reinforcing bead core of said carcass assembly, said cylindrical wall extending along and around a central roll axis, and said reinforcing bead core extending along a generatrix forming a ring around said roll axis, said system comprising:
- a folding device, comprising at least one pressing member such as a pressure roller, and arranged to cause said pressing member to be applied against a radially outer face of the end section, in an angular working sector of the cylindrical wall which corresponds to a fraction of a circumference of the end section around the roll axis, and to cause said pressing member to execute a tilting pitching movement about the generatrix of the reinforcing bead core, so that the pressing member folds the portion of the end section located in the angular working sector concerned towards a radially inner face of the cylindrical wall of the carcass assembly, around the reinforcing bead core,
- a drive device designed to modify a relative position of the pressing member, by successive angular increments, with respect to the carcass assembly about the roll axis, so that the pressing member can execute its tilting pitching movement in different angular working sectors in order to fold the corresponding portions of the end section one after another,
- a selector designed to place the pressing member, alternately, in a working configuration, enabling said pressing member to bear against the radially outer face of the end portion in the angular working sector concerned and to force the corresponding portion of the end section to be folded when the folding device executes the tilting pitching movement in said angular working sector concerned, and then in a withdrawn configuration which prevents said pressing member from interfering with the end section when the drive device modifies the relative position of said pressing member with respect to the cylindrical wall of the carcass assembly, about the roll axis, to change the angular working sector,
- wherein the system comprises an automatic sequencer that is programmed to execute and repeat, as often as required, until the end section has been pressed, along its whole circumference about the roll axis, against the radially inner face of the wall of the carcass assembly, during an elementary sequence:
- the selector places at least one pressing member in the working configuration;
- the folding device causes said at least one pressing member to execute the tilting pitching movement about the generatrix of the reinforcing bead core, in the angular working sector in question, so as to fold towards the radially inner face of the wall of the carcass assembly the portion of the end section that is located in said angular working sector;
- the selector places the at least one pressing member back in the withdrawn configuration;
- the drive device offsets the wall of the carcass assembly about the roll axis by a chosen angular increment, relative to the at least one pressing member, so as to place said at least one pressing member in a new angular working sector, separate from the preceding angular working sector in question.