Continuous rolling process of a product exiting from a rolling stand upstream faster than taking speed of a roll stand downstream

摘要

Continuous lamination procedure of a product in roll stands (RS1, RS2) consecutive up- and downstream, the product leaves the rolling stand (RS1) upstream at a speed V1 which is higher than the take in speed V3de box lamination (RS2) downstream, said method comprising: directing the product exiting the roll stand upstream along an axis (a) to an accumulator (10) arranged between the roll stands, said accumulator has a laying assembly (LA) curved with an inlet end (22a) aligned with said axis to receive the product, and an outlet end (22b) spaced radially from said axis to deliver the product in a direction transverse output shafts ; during a first time interval, the assembly of stationary positioning is maintained, with its exit end aligned with a guide (CA) leading to the rolling stand downstream and product through said guide is provided for rolling the rolling speed downstream V3, while excess product resulting from the velocity differential V1-V3 continues to be delivered from the upstream roll stand; temporarily store excess product in a loop (Looper) (54, 56) arranged between the accumulator and one of the roll stands; for a second time interval, the laying assembly about the axis at a speed of operation is rotationally accelerated in which the outlet end has a speed V2 equal to V1V3, so the product being delivered end decelerates output speed V3; during a third time interval, continuing the rotation of the laying assembly in operational speed, the curvature of the laying assembly and the orientation of the output end are such as to form the product delivered from said exit end in excess which It rolled in the roll stand downstream in a helix; deposit and accumulating said helix on a rotary cylindrical drum (DR) on the axis, and rotating said drum in a direction opposite to the direction of rotation of the laying assembly to thereby unwind said helix via the guide box downstream roll at the speed V3.