Molding unit for containers, equipped with a boxing device with improved compactness

Molding unit (1) for the forming of a container (2) provided with a hollow recess (3) toward the interior of the container (2), this molding unit (1) comprising:

• a mold (5) provided with a lateral wall (6) defining a cavity (7) having the impression of at least one portion of the container (2) and that extends along a main axis (X) defining a vertical direction, this lateral wall (6) being provided with a housing (9) that opens into the cavity (7);
• a boxing device (11) comprising:
• an insert (12) mounted in translation relative to the lateral wall (6) along a transverse axis (1) between a retracted position in which the insert (12) is at least partially retracted in the housing (9), and a deployed position in which the insert (12) projects at least partially into the cavity (7) outside of the housing (9),
• an actuator (16) that is integral with the insert (12) and provided with a piston (17);
• wherein:
• the housing (9) is formed hollow in a protrusion (10) forming a projection toward the interior of the cavity (7),
• in deployed position, the insert (12) forms, beyond the protrusion (10), a projection whose transverse extension, denoted E, is less than or equal to 85% of the cumulative transverse extension, denoted F, of the protrusion (10) and of the insert (12):
• E≤0.85·F.