| 摘要 |
<p>The perforating knife (2) is mounted by means of the support (3) between the side walls (4). Above the knife (2), a geared belt (9) is mounted which runs over two gear-wheels (10 and 11) mounted in the side walls (4). The gear wheel (10) is driven by the motor (12). A small wheel (6) is mounted with the shaft (7) on the geared belt (9). By means of pin tractors, the strip (1) is moved over the edge (5) of the knife (2) over the suitable distance, whereafter for perforating cross-wise, the geared belt (9) is driven, whereby the small wheel (6) is moved over the strip (1) and the knife edge (5).</p> |
