| 摘要 |
A method and apparatus are disclosed for severing or otherwise cutting cigarette filters, tobacco rods and the like. According to the invention, a slitter knife is maintained in whetting engagement with a whetting mechanism, so that the slitter knife never becomes dull. This is preferably achieved by mounting the slitter knife on a pivotable carriage and providing an automatic control system which pivots the slitter knife to maintain it in the desired engagement with the whetter. A feedback system can be included, to monitor the sharpness of the slitter knife and to indicate when adjustment of the slitter knife position is required.
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