Trailing end portions and leading end portions of two carrier tapes are detected in a first detecting position P1 and a second detecting position P1 which are set along a tape traveling path 5c by a first tape detecting sensor S1 and a second tape detecting sensor S2, and a tape feeding control device 26 controls a first tape feeding mechanism 20A and a second tape feeding mechanism 20B so as to control an interval between the trailing end portion and the leading end portion based on an interval control pattern.