A palletizing device including a lower surface which restingly receives a pallet, and an upper platform which is provided with a variably-configurable first support, cyclically between a closed configuration in which the first support supports a layer of products and an open configuration in which the layer of products is released downwardly; an intermediate platform between the lower surface and the upper platform, which move between a raised position and a lowered position and vice versa, comprising a variably-configurable second support which, maintain the second support in a closed configuration, thus forming a stack, and which release the stack of products towards the underlying lower surface in an open configuration.