Adjustment arrangement for circular slitting knives

摘要

An arrangement for adjusting and aligning one of a set of upper and lower circular cutting blades on a rotatable shaft includes the provision of at least two sets of guide rings having spherical mating surfaces located between the blades and the shaft. One set of rings surrounds the shaft and the other set supports the blades. Sleeves at opposite ends of the other set of rings bear thereagainst and position the blades in place, the sleeves being movable toward one another so as to shift the blades by substantially the same amount along the shaft as the sets of rings shift along their mating spherical surfaces, to thereby assure uniform angularity between the upper and lower blades.