Tissue Paper Cutting Mechanism Having Upper Knife with Variable Spiral Curve Angle and Upper Knife Structure Therefor

摘要

TISSUE PAPER CUTTING MECHANISM HAVING UPPER KNIFE WITH VARIABLE SPIRAL CURVE ANGLE AND UPPER KNIFE STRUCTURE THEREFOR 5OF THE DISCLOSURE A tissue paper cutting mechanism having upper knife (5, 5a) with variable spiral curve angle includes a base (1), a bed knife roller (3, 3a) rotatably mounted on the base (1) and provided on a circumferential surface with a 10 plurality of straight bed knives (32) radially spaced at predetermined intervals, a knife carrier (4, 4a) mounted on the base (1) near the bed knife roller (3, 3a) at an axis skew angle relative to the bed knife roller (3, 3a), and an upper knife (5, 5a) associated with a structural surface of the knife carrier (4, 4a) to extend along a longitudinal axis direction of the knife carrier (4, 4a) from an end (40a) 15 to another opposite end (40b) thereof in a spiral direction, such that an angle contained between an axis of the upper knife (5, 5a) and a tangential line to the circumferential surface of the bed knife roller (3, 3a) non-linearly varies with every change of the cutting position on the upper knife (5, 5a). o .~ s/ / * e . /|