Device and method for forming a container by folding

A device (2) for forming a container (1) by folding a cardboard sheet (100), said sheet (100) being provided with at least vertical flaps (106), comprising at least:

• an upstream conveyor (3) driving said cardboard sheet (100) in a direction of travel;
• a downstream conveyor (4);
• means (5) for folding the vertical flaps (106) of said cardboard sheet (100), said folding means (5) being situated symmetrically on either side of at least said upstream conveyor (3);
• wherein, on each side, said folding means (5) comprise:
• a pair of downstream and upstream pushers (50) forming a gripper, said pushers (50) being actuated jointly from an open position toward a closed position of folding said corresponding vertical flaps (106), and vice versa;
• a support (6) for each gripper, said support (6) being mobile in said direction of travel.