| 摘要 |
<p>The device has a rotating perforation knife (10) and a grooved roller (17), which are supported in a machine frame (1,2) on either side of the paper to be perforated. At least one eccentric shaft (13,21) is provided to adjust the spacing between the rotation axes of the knife and the roller. One eccentric shaft may also act as a further adjuster, so that the knife can be adjusted for a larger or smaller width or spacing from the rotation axis.</p> |
