It is intended to allow for readily performing a cover tape setting operation. In the present invention, a tape guide 110 for guiding a component supply tape 35 includes a front guide section 120 provided with an open surface 128 opened on one side thereof in a continuous manner in a tape feed direction, so as to allow a cover tape 37 to be taken in and out relative to the front guide section 120 through the open surface 128. This configuration makes it possible to perform the setting operation for the cover tape 37 through given operational steps, under a condition that the tape guide 110 remains fixed to a component supply unit 40.