| 摘要 |
The disclosed invention describes an automatic sewing machine adapted to sew along a tubular workpiece edge. Upon insertion, the workpiece is tensioned and the marginal edge thereof is arranged in a different shape before sewing than after sewing. An array of sensors are positioned to monitor and effectively control the lateral disposition of the workpiece edge during the entirety of the sewing cycle and to effect an uninterrupted working sequence without the need of operator intervention.
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