Filament winding device and filament winding method

A filament winding device configured to supply a band-shaped bundle, which is a bundle of a plurality of fibers, to a workpiece, and wind the band-shaped bundle around the workpiece, the workpiece including a cylinder portion having a round tubular shape and dome portions provided at both ends of the cylinder portion, the filament winding device comprising:

• a plurality of rollers configured to rotate while being in contact with the band-shaped bundle to thereby feed the band-shaped bundle toward the workpiece;
• and
• a roller changer configured to select one of the plurality of rollers and bring a selected roller into contact with the band-shaped bundle,
• wherein the plurality of rollers include a straight roller and at least one crown roller, and
• the roller changer is configured to:
• when the band-shaped bundle is wound around the workpiece by way of hoop winding, select the straight roller and bring the selected straight roller into contact with the band-shaped bundle;
• and
• when the band-shaped bundle is wound around the workpiece by way of helical winding, select the crown roller and bring the selected crown roller into contact with the band-shaped bundle.