The machine is equipped of an input chain conveyer for the advancement of two piles of ? full of bins stacked (one pile in operation and one pile in the storehouse). It is prearranged with a device for the dumping of bins at different height through an adjustment governor regulator by means of a gear motor and by a lifting rack. Damper frame with a cover and with a containing belt that during its rise it allows the product gradual exit contained by a big motorized brush. Upper exit empty bins device with a store roller for two stacked piles. It is equipped of an electrical panel with a timer for pause and work. The machine structure is in steel section, press rolled and carbon painted, with special bicomponent paint performed at furnace.