Rolling apparatus for sequential rolling

A rolling apparatus comprising first and second conveyance systems spaced apart from each other along a conveyance line for reciprocating a material to be rolled along said conveyance line and a rolling mechanism so disposed that said conveyance line extends therethrough for rolling the material during reciprocation thereof, said rolling mechanism including:

• a. a rolling unit having a frame adapted to move in the direction perpendicular to said conveyance line, a pair of rotatable rolls each provided with a plurality of shape grooves at the circumference thereof and disposed so that said conveyance line continuously extends therebetween, a plurality of shape apertures provided between said rolls by said shape grooves for rolling the material;
• b. a drive system connected to said rolling unit for rotating said rolls;
• c. a shift system connected to said rolling unit for moving said rolling unit in the direction perpendicular to said conveyance line so as to selectively locate said shape apertures on said conveyance line;
• d. a system connected to rolling unit for detecting the position of said rolling unit relative to said conveyance line and providing a signal to indicate said position;
• and
• e. a system connected to said shift system for controlling said shift system and including (1) a unit for setting the order of locating said shape apertures on said conveyance line, (2) a unit for selecting said shape apertures set in said setting unit in said order and providing a signal to indicate the particular shape apertures to be located on said conveyance line, (3) a unit for computing the difference between the value of signal from said detecting system and that of signal from said selecting unit and providing a signal to indicate said difference, (4) a unit for generating signals to indicate the speed of moving of said rolling unit by receiving the differential signal from said computing unit so that said generating unit provides a signal to move said rolling unit at a higher speed when the value of said differential signal is larger than a first marginal value, a signal to move said rolling unit at a lower speed when said value is smaller than said first marginal value but larger than a second marginal value, and a signal to stop said rolling unit from moving when said value is smaller than said second marginal value, and (5) a section for controlling said shift system in accordance with the signals from said generating unit.