Filament winding apparatus

A filament winding apparatus that winds, around a workpiece, a fiber bundle formed by bundling a plurality of fibers, the filament winding apparatus comprising:

• a widening roller configured to rotate while making contact with the fiber bundle that is being conveyed;
• an aligning roller configured to rotate while making contact with the fiber bundle before passing through the widening roller;
• and
• a collecting roller configured to form the fiber bundle into a band-shaped bundle by rotating while making contact with the fiber bundle that has passed through the widening roller, wherein
• the widening roller includes, provided on a peripheral surface thereof, a plurality of projecting ridges extending in an axial direction of the widening roller, the projecting ridges being arranged side by side in a circumferential direction of the widening roller, and the projecting ridges make contact with the fiber bundle to thereby widen the fiber bundle,
• the aligning roller includes, provided on a peripheral surface thereof, a plurality of circumferential direction grooves extending in the circumferential direction, the circumferential direction grooves being arranged side by side in the axial direction, and a position of the fiber bundle on a conveying path is adjusted in the circumferential direction grooves,
• the fiber bundle includes a plurality of first fiber bundles and a plurality of second fiber bundles,
• the conveying path for the fiber bundle includes a first conveying path configured to convey the plurality of first fiber bundles spaced from each other in parallel, a second conveying path configured to convey the plurality of second fiber bundles spaced from each other in parallel, and a merging path configured to convey the first fiber bundles and the second fiber bundles merged with each other,
• the aligning roller includes a first aligning roller provided in the first conveying path and a second aligning roller provided in the second conveying path,
• the widening roller includes a first widening roller provided in the first conveying path and a second widening roller provided in the second conveying path, and
• the collecting roller includes a first collecting roller and a second collecting roller configured to merge the first conveying path with the second conveying path, and, by passing the first fiber bundles that have passed through the first collecting roller through the second collecting roller together with the second fiber bundles, each of the second fiber bundles is disposed in a space between the first fiber bundles and each of the first fiber bundles is disposed in a space between the second fiber bundles, whereby the band-shaped bundle is formed.