| 摘要 |
In the sewing unit for the successive production of a number of stitch groups in a workpiece, a carriage supported slidably in two opposite directions on a frame and bearing a stitch group sewing machine. The sewing unit is periodically driven by a drive unit back and forth. A clamping device, slidably supported on the frame, is periodically coupled to the carriage by a clutch unit. The stitch group sewing operation takes place during the synchronous motion of the stitch group sewing machine and the clamping device. When the sewing operation is completed and the carriage is at rest, a pushing device attached to the frame pushes the clamping device, once it has been uncoupled from the carriage, in the opposite direction to its previously executed motion, back into its initial position.
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