A plurality of tape feeders are held by a feeder holding device in a state in which component supply portions of the respective tape feeders are arranged in a plurality of rows each extending along a plurality of straight lines parallel to each other in one plane. Each of the plurality of tape feeders is separable into first portions and second portions, the first portions include: a reel holding portion configured to hold a reel on which a taped component is wound; the component supply portion; a taped-component guide portion configured to guide, to the component supply portion, the taped component drawn from the reel, the second portions respectively including taped-component feeding devices each for feeding the taped component to the component supply portion.