Patent ID: 7673543
Filing Date: 2010-03-09
Classification: B26D,B26F,Y10S,Y10T

Abstract:
1. An apparatus for making a fracture cut in a plastic cap, the plastic cap having an axis of symmetry thereof and comprising a cup with a side wall and a safety ring, the fracture cut being made in the side wall of the cap between the cup and the safety ring, the apparatus comprising: a footing and a frame; rotary means supported on said footing and provided with at least one mandrel that has a rotation axis thereof and is arrangeable inside the cup of a cap; a blade supported on said frame and arranged along a path of movement of the at least one mandrel for making said cut with a cutting edge thereof, a cap inlet path portion associated with said blade and including means to offset the axis of symmetry of the cap with respect to the rotation axis of said mandrel by clamping the cap side wall against said mandrel, said rotary means rotating the at least one mandrel as it moves along said blade to produce rolling of the clamped side wall about the axis of symmetry of the cap and along the cutting edge of said blade for making said cut; and recentering means comprising at least one pusher and a cam means supported at said frame, said cam means moving said at least one pusher toward said path of movement of the at least one mandrel to act on the cap side wall for recentering said cap so that the symmetry axis thereof coincides with said rotation axis of the mandrel.