Patent ID: 7815141

Claim:
A filament winding apparatus comprising: a supporting board for supporting a mandrel that integrally includes a middle cylindrical part and a dome part continuing at both ends of the cylindrical part, and a helical winding head for supplying and guiding a fiber bundle towards the mandrel, wherein the helical winding head includes: a guide ring concentrically supported at a periphery of the mandrel, a group of guide tubes radially arranged along a circumferential direction of the guide ring, and a tube operation mechanism reciprocating the guide tube along a tube axis center direction, wherein the guide tube is operated to move closer to a circumferential surface of the dome part with the tube operation mechanism when the guide tube is facing the dome part, a movement trajectory of the guide tube that is operated by the tube operation mechanism to move closer to the circumferential surface of the dome part is a curved line form along an outer contour line of the dome part, the movement trajectory of the guide tube is set to a curved line form lying along the outer contour line of the dome part by matching a spacing of the guide tube and the mandrel at the cylindrical part, and a spacing of the guide tube and the mandrel at the dome part, the diameter of the cylindrical part increases as the winding process progresses, and in correspondence with the increase in the diameter of the cylindrical part, a holding position of the guide tube in a standby state is shifted radially outward.