A capsule closure device is for closing two-piece capsules each having a capsule upper portion and a capsule lower portion. The capsule closure device includes a capsule upper portion receiving member and a capsule lower portion receiving member. The capsule upper portion receiving member has a receiving hole and an introduction hole which is arranged coaxially relative to the receiving hole. The capsule upper portion receiving member has at the inner side thereof between the receiving hole and the introduction hole a support shoulder for supporting the capsule upper portion. The capsule upper portion receiving member has at the inner side thereof at the introduction hole at least one ventilation hole.
