Brake device for the realization of laminar packages for electrical use

An apparatus for a realization of laminar packages for electrical use defined by an overlapping of magnetic laminations formed by shearing, said apparatus comprising:

• a brake device;
• a shearing mould, wherein the brake device is positioned below the shearing mould;
• said brake device comprises a brake block provided with an opening formed according to an axial direction of movement of a shearing element of the apparatus and with a shape corresponding to that of a lamination sheared by said shearing element;
• said brake device has a size smaller than a size of the shearing mould that forms the lamination to define an interference functional to a packing of the laminations;
• and
• the brake device comprises mechanical stress compensation means adapted to keep said interference constant, wherein said mechanical stress compensation means comprise pockets formed outside the opening of the brake block and extended in a thickness of the axial direction of said brake block and along the peripheral edge of the opening.