Filament winding apparatus

A filament winding apparatus configured to wind a fiber bundle around a liner, comprising:na first guide unit and a second guide unit each comprising a plurality of fiber supplying guides arranged radially and extending and contracting in a direction approximately perpendicular to a central axis of the liner;a driving unit configured to change an amount of extension or contraction of the fiber supplying guides; anda controller configured to adjust a distance between the fiber supplying guides and the central axis of the liner by controlling the driving unit, whereinwhen a fiber bundle supplied from a fiber supplying guide of the first guide unit crosses between a fiber supplying guide of the second guide unit and the liner, the controller makes the distance from the fiber supplying guide of the second guide unit to the central axis of the liner larger than the distance from the fiber supplying guide of the first guide unit to the central axis of the liner, andwhen a fiber bundle supplied from the fiber supplying guide of the second guide unit crosses between the fiber supplying guide of the first guide unit and the liner, the controller makes the distance from the fiber supplying guide of the first guide unit to the central axis of the liner larger than the distance from the fiber supplying guide of the second guide unit to the central axis of the liner.