| 摘要 |
A sewing machine system adapted for joining portions of a multiple layer limp fabric workpiece includes a workpiece support surface and a sewing head assembly. The sewing head assembly houses an elongated needle adapted for reciprocating motion along a needle axis extending through an aperture in the workpiece support surface. A selectively operable feeder is adapted to transport a region of a limp fabric workpiece on the workpiece support surface in the direction of a feed axis having a fixed orientation with respect to the feeder. A coupling assembly rotatably couples the feeder to the sewing head assembly so that the feeder is selectively rotatable about the needle axis. A feed controller controls the feeder and includes an orientation controller adapted to selectively control the angular orientation of the feeder with respect to the sewing head assembly so that the feed axis may be adjustably offset with respect to a reference axis on the workpiece support surface. The feeder includes a feeder frame, an endless belt assembly coupled to the frame, and an associated drive motor and linkage adapted to drive the belt assembly to selectively adjust the angle of presentation for a limp fabric workpiece to the needle of the sewing head assembly. |
