Moulding unit for producing a support element for the human body, such as a vehicle seat

1. A moulding unit for producing a vehicle seat, comprising:

a male component having engagement means for a felt or hull (HU) for the seat to be moulded,

a female component delimiting a first moulding recessed area in which a first mixture to be solidified or hardened close to said felt or hull can be supplied,

means for approaching-moving away said male component and said female component between at least one first open position and at least one first closing position for moulding or obtaining a felt or hull with a first foaming or a first moulding layer (S 1 ),

wherein said moulding unit delimits at least one second recessed area with dimensions different with respect to said first recessed area and extending for an entire length of the seat to be moulded, in said at least one second recessed area being suppliable a second mixture to be solidified and hardened,

wherein said at least one second recessed area can be positioned in a second closed position close to said felt or hull (HU) moulded previously with a first foaming or first moulding layer alternatively to said first recessed area for moulding a second foaming or second moulding layer or spraying layer on the felt or hull moulded previously with a first foaming or first moulding layer, such that a felt or hull covered with two foamings or two moulding layers can be obtained.

2. The moulding unit according to claim 1 , wherein in said at least one first open position of said moulding unit it is possible to constrain a felt or hull (HU) to said engagement means, while in said at least one first closing position said male component and female component are in contact along respective surfaces or faces so as to sealingly close said first recessed area close to and enclosing said felt or hull (HU) and mould on said felt or hull a first mixture for obtaining a felt or hull with a first foaming or first moulding layer.

3. The moulding unit according to claim 1 , wherein said female component delimits both said first recessed area and said second recessed area.

4. The moulding unit according to claim 3 , wherein said female component is rotatably mounted around a determined axis, said female component delimiting said first recessed area on a first face thereof and said second recessed area on a second face thereof opposite to or different from said first face, and wherein said moulding unit comprises means for the rotation or angular displacement of said female component between a first trim wherein said first face faces towards said male component to obtain the first foaming or first moulding layer and a second trim wherein said second face faces towards said male component to obtain the second foaming or second moulding layer.

5. The moulding unit according to claim 4 , wherein said female component is rotatably mounted around an axis orthogonal to the approaching-moving away direction of said male component and said female component or to the relative rotation axis to approach-move away or open-close the male component and female component.

6. The moulding unit according to claim 4 , wherein with said female component in said second trim, said approaching-moving away means are designated to approach-move away said male component and said female component between at least one second opening position of said moulding unit and at least one second closed position in which said male component and said female component are in contact along respective surfaces or faces so as to sealingly close said second recessed area close to said felt or hull with a first foaming or first moulding layer and then proceeding to mould a second foaming or second moulding layer by means of heat and/or pressure on the felt or hull with a first foaming or first moulding layer to obtain a felt or hull covered with two foamings or two moulding layers or spraying layer.

7. The moulding unit according to claim 3 , wherein said female component delimits the first recessed area and the second recessed area and it can be displaced by translation means between a first trim wherein said first recessed area faces towards said male component to obtain the first foaming or first moulding layer (S 1 ) and a second trim wherein said second recessed area faces towards said male component to obtain the second foaming or second moulding layer or spraying layer (S 2 ).

8. The moulding according to claim 1 , wherein said male component comprises a main sheet, while said engagement means comprise a shaped portion projecting from said main sheet and arranged to snap-engage or engage by forced insertion or by suctioning a cavity of a felt or hull (HU) of the vehicle seat.