Very high speed flying shears

Very high speed flying shears suitable for shearing rolling stock travelling even at a speed of more than one hundred meters per second, comprising:

• two knives which counter-rotate relative to each other at a first predetermined speed at least during a shearing period and which define a shearing axis, each of said knives having a blade located at a circumferential position, each said blade extending substantially across the entire width of said knife;
• a guide moving means for moving a guide essentially horizontally at a second predetermined speed and positioning the rolled stock at a desired lateral position relative to the shearing axis;
• and
• a conveyor channel located downstream of the knives and having an inner dividing wall, said inner dividing wall comprising a partition which divides the conveyor channel into two compartments, said partition having an end portion which has two opposing side surfaces and a transversely rounded upper surface, said upper surface extending essentially parallel to said shearing axis,
• wherein during the shearing period, said knives cut the rolled stock into a front sheared portion and a rear sheared portion, and wherein the guide moves horizontally so as to cause said rear sheared portion to pass over said rounded upper surface from one of said compartments into the other of said compartments;
• said end portion further comprising a frontal rounded tongue which extends at an angle down from said rounded upper surface and which defines a frontal point.

Very high speed flying shears suitable for shearing rolling stock travelling even at a speed of more than one hundred meters per second, comprising:

• two knives which counter-rotate relative to each other at a first predetermined speed at least during a shearing period and which define a shearing axis, each of said knives having a blade located at a circumferential position, each said blade extending substantially across the entire width of said knife;
• a guide, upstream of said two knives, adapted to move essentially horizontally at a second predetermined speed to position the rolled stock at a desired lateral position relative to the shearing axis;
• and
• a conveyor channel located downstream of the knives and having an inner dividing wall;
• means for moving the guide essentially horizontally during the shearing period with the second predetermined speed being correlated with the first predetermined speed, and the lateral position being correlated to the circumferential position of the blades so that the guide is substantially parallel to the shearing axis while the guide moves at said second predetermined speed and the blades cut the rolled stock;
• wherein said inner dividing wall comprises a partition, said partition having an end portion which has a transversely rounded upper surface, said upper surface being located a predetermined distance above said shearing axis, said predetermined distance being related to the diameter of the rolled stock;
• axes of rotation of said knives define a vertical plane perpendicular to said shearing axis;
• the distance between the partition and vertical plane is related to the diameter of the rolled stock
• said partition defining a median vertical plane which substantially contains the shearing axis;
• said rounded upper surface extends essentially parallel to said shearing axis, and said end portion further comprises a frontal rounded tongue which extends at an angle down from said rounded upper surface and which defines a frontal point;
• the blades of said knives are shaped so as to create an upwardly curved front end in a rear sheared portion of the rolled stock;
• said upwardly curved front end cooperates with the frontal rounded tongue and the rounded upper surface so as to pass laterally over the partition.