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AssigneeIshikawajima-Harima Heavy Industries Co., Ltd.
InventorsEiichi Harada, Masaaki Urakawa, Teruyuki Urushibara, Katsu Tsukii
Estimating the term…
The roll gap control system for a calender having first and second rolls (18, 19) rolling a raw material (B) includes a load measuring unit (11) for detecting a rolling load change between the first and second rolls (18, 19), a roll shaft position adjusting device (41) for increasing/decreasing a roll gap and a controller (46) for computing a roll gap change (.DELTA.h) based on the rolling load change (.DELTA.P) and for activating the roll shaft position adjusting device (41) to compensate for the roll gap change (.DELTA.h). A spring constant (k) of first and second rolls (18, 19) and mechanical members (24, 25, 28) supporting these rolls of the calender is calculated, and the rolling load change (.DELTA.P) is divided by the spring constant (k). The quotient (.DELTA.P/k) is the roll gap change (.DELTA.h).
For use with a calender having first, second, third and fourth rolls, the first and second rolls being movably installed next to each other with a first gap therebetween, the third and fourth rolls being movably installed next to each other with a second gap therebetween, the second and third rolls being movably installed next to each other with a third gap therebetween, a first raw material being fed into the first gap and rolled therebetween with a first rolling load, a second raw material being fed between the second gap and rolled therebetween with a second rolling load, the first and second raw material being fed into the third gap and rolled and joined therebetween with a third rolling load, a method comprising the steps of:
For use with a calendar having a first, second, third and fourth rolls, the first and second rolls being movably installed next to each other with a first gap therebetween, the third and fourth rolls being movably installed next to each other with a second gap therebetween, the second and third rolls being movably installed next to each other with a third gap therebetween, a first raw material being fed into the first gap and rolled therebetween with a first rolling load, a second raw material being fed into the second gap and rolled therebetween with a second rolling load, the first and second raw materials being fed into the third gap and rolled and joined with a third rolling load, an apparatus comprising:
Dependencies are inferred from the claim text.