Patent ID: 6250191
Filing Date: 2001-06-26
Classification: B23D,Y10T

Abstract:
Shearing assembly for cropping machines suitable to shear elements shaped as rods or sheet and placed on a work plane, the shearing assembly comprising at least a movable trolley supporting at least a rotary blade constrained to a supporting structure of the cropping machine by at least one guide, the movable trolley moving alternately from an inactive position, wherein the blade does not come into contact with an element to be sheared on the work plane, to a working position wherein the blade comes into contact with the element to be sheared on the work plane to carry out the shearing operation, the movable trolley cooperating with movement means comprising at least a main actuator for generating on the movable trolley, during at least one of outward travel of the movable trolley from the inactive position to the working position and return travel of the movable trolley from the working position to the inactive position, a torque component which modifies a trajectory of the blade with respect to the work plane between the outward travel and the return travel, and in that at least one component either of the supporting structure or the at least one guide has characteristics of at least partial elastic flexibility so as to allow the movable trolley to oscillate when it is stressed by the torque component.