The CA9-R yarn cutter is a device especially devoted to automatic winders.
The CA9-R cuts automatically the yarn when the bobbin is full. The CA9-R is useful on automatic winders: more and more the yarn has to be automatically cut when the bobbin is full. Some machine builders utilise pneumatic cutters, but the trend is to use electromagnetic cutters. The CA9-R has to cut the yarn and generally to clamp it.