Withdrawing device for a vending machine for delivering products, comprising at least one supporting structure equipped with at least one fall, room of said product into a withdrawal area and at least one withdrawal room of said product from outside, said fall room being equipped with at least one first bulkhead and said withdrawal room being equipped with at least one second bulkhead, said first bulkhead being movable between a closing position and an opening position of said fall room and vice versa, and said second bulkhead being movable between a closing position and an opening position of said withdrawal room and vice versa, wherein: - the withdrawing device comprises at least one blocking system adapted to prevent a passage of said second bulkhead from its closing position to its opening position of said withdrawal room till said product has reached said withdrawal area; - said fall room and said withdrawal room are arranged on two different walls (9, 11) of said supporting structure, said walls (9, 11) being mutually orthogonal; - said first bulkhead is hinged with vertical rotation axis along a vertical side edge of said fall room, said vertical edge being on a side corresponding to a position of said wall of said withdrawal room, while said second bulkhead is hinged with horizontal rotation axis along a horizontal upper edge of said withdrawal room; and - said blocking system comprises at least one cursor equipped with an upper portion for engaging such second bulkhead, said cursor being slidable along a substantially vertical direction between an upper position in which said upper portion engages said second bulkhead and prevents its opening, and a lower position in which said upper portion disengages said second bulkhead and allows its passage from its closing position to its opening position of said withdrawal room, and vice versa, characterised in that said bulkheads (13, 15) are mutually and operatively cooperating so that, when said second bulkhead is in its closing position of said withdrawal room, said first bulkhead is in its opening position of said fall room, while when said second bulkhead is taken to its opening position of said withdrawal room, said first bulkhead is taken to its closing position of said fall room. - the withdrawing device comprises at least one blocking system adapted to prevent a passage of said second bulkhead from its closing position to its opening position of said withdrawal room till said product has reached said withdrawal area; - said fall room and said withdrawal room are arranged on two different walls (9, 11) of said supporting structure, said walls (9, 11) being mutually orthogonal; - said first bulkhead is hinged with vertical rotation axis along a vertical side edge of said fall room, said vertical edge being on a side corresponding to a position of said wall of said withdrawal room, while said second bulkhead is hinged with horizontal rotation axis along a horizontal upper edge of said withdrawal room; and - said blocking system comprises at least one cursor equipped with an upper portion for engaging such second bulkhead, said cursor being slidable along a substantially vertical direction between an upper position in which said upper portion engages said second bulkhead and prevents its opening, and a lower position in which said upper portion disengages said second bulkhead and allows its passage from its closing position to its opening position of said withdrawal room, and vice versa,