Filament winding apparatus

A filament winding apparatus comprising:

• a helical winding head configured to helical-wind fiber bundles onto a liner, the helical winding head including:
• guide members that extend in radial directions of the liner in a radial manner and guide the respective fiber bundles to the liner;
• a movement mechanism configured to move each of the guide members in the radial direction;
• and a rotation mechanism configured to rotate each of the guide members about an axis parallel to a direction in which each of the guide members extends, each of the guide members including:
• two side walls that oppose each other and extend in the radial direction;
• and
• guide portions fixed between the two side walls, a running fiber bundle in contact with the guide portions,
• the guide portions including:
• a first guide portion in which a first guide surface is formed, the running fiber bundle in contact with the first guide surface;
• and
• a second guide portion in which a second guide surface is formed, the running fiber bundle in contact with the second guide surface and the second guide portion being downstream of the first guide portion in a fiber bundle running direction,
• a direction orthogonal to a longitudinal direction of the side walls being defined as a height direction of the side walls,
• the first and second guide portions at least partially overlap in the height direction of the two side walls such that the fiber bundles constantly contact the first guide portion and the second guide portion and thus guide the fiber bundles while being wound,
• the first guide surface being oriented to one side in the height direction, and
• the second guide surface being oriented to the other side in the height direction and provided on the other side of the first guide surface in the height direction.