| 摘要 |
<p>An automatic sewing machine for stitching a film or fabric, material together at the edges, has a control unit to ensure that the edges of the upper and lower material layers are correctly aligned and positioned while the workpieces are being advanced rapidly to and through the sewing station. The fabric layers even if they ar of different materials, are correctly and rapidly aligned for sewing, to give accurate and automatic sewing.</p> |
