| 摘要 |
<p>The machine has a belt guide frame with a belt guide channel (14) and a number of closing units (15, 15a-15e) that are arranged over the channel length in rotatable manner, where the units are moved against reset force from a position closing the channel into the position opening the channel. The units are fixed in the position closing the channel by a magnetic locking device. The units cover the channel.</p> |
