A device for the accumulation and release of products arranged in ranks within containers having sequentially loaded and discharged compartments, comprising an accumulation buffer with corresponding openings for receiving and delivering products and means for guiding the containers between the openings. The device uses pushers to push products out of the containers and onto at least one corresponding conveyor. Alternatively, where two independent pushers are utilized, the conveyor is repositionable at heights capable of receiving product sequentially displaced by each pusher by cycling the conveyor position to match the height of the currently actuated pusher. The discharge movement of each pusher is controlled so as to allow adequate time for the conveyor to reposition to the next sequentially actuated pusher so as to receive the products in a properly spaced arrangement onto a single conveyor.