Hydraulic or oleodynamic or pneumatic press

A hydraulic or oleodynamic or pneumatic press comprising a pressing component and a base or top component defining with said pressing component an area or pressing zone (PZ) where to arrange pieces or objects (OB) to be processed, said press further comprising at least one drive group arranged to feed liquid or gas to said pressing component in order to move it towards and away from said base or top component for pressing objects (OB) in the pressing area or zone (PZ), said drive group comprising:

• at least one motor arranged to drag a respective main shaft in rotation,
• at least one pump or a compressor arranged to suck and discharge a liquid or a gas for the displacement of said pressing component,
• at least one circuit for conveying said liquid or gas in suction, crossing and delivery from said at least one pump or compressor, which conveying circuit is arranged to suitably convey the liquid or gas for pushing or in any case moving or displacing said pressing component,
• at least one switching component for switching between at least one first operating condition and at least one second operating condition of said at least one pump or compressor and/or a discharge or by-pass of said conveying circuit,
• said group further comprising at least one flywheel interposed between said at least one motor and said at least one pump or a compressor, said at least one flywheel being kinematically connected
• on the one hand, to said at least one main shaft, so that said at least one flywheel is dragged into rotation by the latter, and
• on the other hand, to said at least one pump or compressor to transfer thereto the rotary motion imparted by said at least one motor, so that
• said at least one pump or said compressor moves or pushes said liquid or gas into the conveying circuit and up to or so as to actuate a respective pressing component following the motion imparted to it by said at least one flywheel only in the at least one first operating condition or to a greater extent in the at least one first operating condition, while in said at least one second operating condition said at least one pump or said compressor does not move or pushes said liquid or gas into the conveying circuit until or so as to actuate a respective pressing component or moves or pushes it into the conveying circuit and until or so as to actuate a respective pressing component to an extent or flow rate or power lower than the at least one first operating condition,
• said at least one flywheel receiving the rotation energy from said at least one motor at least during the at least one second operating condition,
• said press further comprising an electronic control unit,
• wherein said at least one main shaft, said at least one flywheel and a pin or second shaft or rotation component of said at least one pump or compressor are mounted for rotation around the same axis (x-x),
• wherein said at least one flywheel is fixed or keyed on or in a single piece with the main shaft or on or in a single piece with an auxiliary shaft rigidly coupled or integral in rotation with said main shaft, whereby by activating said at least one motor the latter put into rotation said at least one flywheel,
• wherein each end of said auxiliary shaft or of said main shaft projects from a respective side of the flywheel and wherein said drive group is provided with a main support unit having a base and vertical walls extending from the base and defining a through opening or an upper cradle zone, a respective end or intermediate part of said auxiliary shaft or of said main shaft being mounted and supported therein or thereon,
• said press further comprising one or more upper closing components, each couplable with a respective vertical wall to close from above the cradle zone and the auxiliary shaft or the main shaft provided therein, with interposition of special bearings, such a structure with the vertical wall defining a cradle zone and the closing component being provided both on the side of the motor and on the side of the pump, so that both ends of the auxiliary shaft or two parts of the main shaft, each protruding from a respective side of the flywheel, would be supported by the main support unit at respective cradle zones,
• wherein said at least one flywheel is disc- or ring-shaped with a diameter between about 600 mm and 3 m.