Patent ID: 7934530
Filing Date: 2011-05-03
Classification: B29C

Abstract:
1. A filament winding apparatus having a helical winding device that winds a fiber bundle around a circumferential surface of a mandrel, wherein the helical winding device includes a fixed frame arranged upstanding on a mount, and a helical winding head supported by the fixed frame; the helical winding head includes a plurality of guide rings adjacently arranged along an axis center of the mandrel and coupled in a relatively freely rotating manner in a circumferential direction, guide tubes arranged at equal intervals along the circumferential directions of the guide rings, and a phase switching structure rotating a guide ring on a movable side; the guide rings are switchable between a first state in which phase positions of the guide tubes in the guide rings are matched and a second state in which the phase positions of the guide tubes in the guide rings are evenly shifted in the circumferential direction by a phase switching structure; and tube exits of the guide tubes attached to the guide rings are arranged close along an axis center direction of the mandrel in the first state.