초록 ▼

Helical winding is reliably carried out in a plurality of patterns at different angles in a short period of time. A filament winding apparatus for winding fiber bundles onto the surface of a mandrel includes a helical winding head for use in helical winding of the fiber bundles onto the mandrel. The

Helical winding is reliably carried out in a plurality of patterns at different angles in a short period of time. A filament winding apparatus for winding fiber bundles onto the surface of a mandrel includes a helical winding head for use in helical winding of the fiber bundles onto the mandrel. The helical winding head includes at least two guide arrays, each including a plurality of guide portions disposed along a circumferential direction of the mandrel, and a repositioning mechanism capable of repositioning the guide portions by rotating each guide array relative to another.

대표청구항 ▼

What is claimed is: 1. A filament winding apparatus for winding fiber bundles onto a surface of a mandrel, the apparatus comprising a helical winding head for use in helical winding of a plurality of fiber bundles onto the mandrel, wherein the helical winding head includes: at least two guide array

What is claimed is: 1. A filament winding apparatus for winding fiber bundles onto a surface of a mandrel, the apparatus comprising a helical winding head for use in helical winding of a plurality of fiber bundles onto the mandrel, wherein the helical winding head includes: at least two guide arrays, each including a plurality of guide portions disposed along a circumferential direction of the mandrel; and a repositioning mechanism capable of repositioning the guide portions by rotating each guide array relative to another, wherein the repositioning mechanism fixes one of the guide arrays relative to another one of the guide arrays after the one of the guide arrays is rotated relative to the another one of the guide arrays. 2. The filament winding apparatus according to claim 1, wherein the guide arrays are guide ring members extending in the circumferential direction of the mandrel, and the guide portions are guide holes made along the guide ring members. 3. The filament winding apparatus according to claim 2, wherein the repositioning mechanism is capable of creating two interchangeable states, such that, in one state, the guide portions of the guide arrays are positioned at regular intervals in the circumferential direction of the mandrel, whereas in the other state, the guide portions are each aligned with one guide portion of the other guide in the circumferential direction of the mandrel. 4. The filament winding apparatus according to claims 3, further comprising a hoop winding head for use in hoop winding of the fiber bundles onto the mandrel, wherein the hoop winding head includes: a bobbin for supplying the fiber bundles to the mandrel; and a mechanism for rotating the bobbin along the circumferential direction of the mandrel. 5. The filament winding apparatus according to claim 4, further comprising a controller portion for allowing the helical winding of the fiber bundles by rotating the mandrel, as well as allowing the hoop winding of the fiber bundles by rotating the bobbin of the hoop winding head. 6. The filament winding apparatus according to claim 2, further comprising a hoop winding head for use in hoop winding of the fiber bundles onto the mandrel, wherein the hoop winding head includes: a bobbin for supplying the fiber bundles to the mandrel; and a mechanism for rotating the bobbin along the circumferential direction of the mandrel. 7. The filament winding apparatus according to claim 6, further comprising a controller portion for allowing the helical winding of the fiber bundles by rotating the mandrel, as well as allowing the hoop winding of the fiber bundles by rotating the bobbin of the hoop winding head. 8. The filament winding apparatus according to claim 1, wherein the repositioning mechanism is capable of creating two interchangeable states, such that, in one state, the guide portions of the guide arrays are positioned at regular intervals in the circumferential direction of the mandrel, whereas in the other state, the guide portions are each aligned with one guide portion of the other guide in the circumferential direction of the mandrel. 9. The filament winding apparatus according to claims 8, further comprising a hoop winding head for use in hoop winding of the fiber bundles onto the mandrel, wherein the hoop winding head includes: a bobbin for supplying the fiber bundles to the mandrel; and a mechanism for rotating the bobbin along the circumferential direction of the mandrel. 10. The filament winding apparatus according to claim 9, further comprising a controller portion for allowing the helical winding of the fiber bundles by rotating the mandrel, as well as allowing the hoop winding of the fiber bundles by rotating the bobbin of the hoop winding head. 11. The filament winding apparatus according to claim 1, further comprising a hoop winding head for use in hoop winding of the fiber bundles onto the mandrel, wherein the hoop winding head includes: a bobbin for supplying the fiber bundles to the mandrel; and a mechanism for rotating the bobbin-along the circumferential direction of the mandrel. 12. The filament winding apparatus according to claim 11, further comprising a controller portion for allowing the helical winding of the fiber bundles by rotating the mandrel, as well as allowing the hoop winding of the fiber bundles by rotating the bobbin of the hoop winding head. 13. The filament winding apparatus according to claim 1, wherein a first one of the guide arrays abuts a second one of the guide arrays in an axial direction of the helical winding head. 14. The filament winding apparatus according to claim 1, wherein each of the guide portions open in a radial direction of the respective guide array. 15. A filament winding method for use in helical winding of a plurality of fiber bundles onto a mandrel: comprising: positioning a first guide array relative to a second guide array; fixing the first guide array to the second guide array; winding fiber bundles onto the mandrel at a first helical angle; repositioning the first guide array relative to the second guide array; fixing the first guide array to the second guide array; and winding fiber bundles onto the mandrel at a second helical angle that is different from the first helical angle; wherein a layer of fiber bundles is wound onto the mandrel at one time during the helical winding, and an apparent number of fiber bundles to be wound is changed in accordance with a winding angle.