Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
285 words
A device for bending-compensation control of a multi-roll press of a calender for glazing of a continuous thin web, such as a paper web, which press comprises an upper roll (22) with a first compensation circuit (E), a lower roll (24) with a second compensation circuit (F), and at least one press roll (23) arranged between the upper and the lower roll, said device comprising: a press-load control circuit (A, B, C, D) comprising a first part (A) acting upon the lower roll (24) and a second part (D) acting upon the upper roll (22), a first feedback (13) for transfering from the first compensating circuit (E) to the control circuit (A, B, C, D) a first signal indicating the rate of compensation of the first compensation circuit (E), a second feedback (12) for transfering from the second compensating circuit (F) to the control circuit (A, B, C, D) a second signal indicating the rate of compensation of the second compensation circuit (F), means (B) in the control circuit (A, B, C, D) for selecting, among the first and second signals, the signal that indicates the slower rate of compensation and to brake down the roll (22 or 24) that has the higher rate of compensation, a third feedback (29, 31) connecting the first part (A) of the control circuit (A, B, C, D) to the first compensation circuit (E), a fourth feedback (30) connecting the first part (A) of the control circuit (A, B, C, D) to the second part (D) of the control circuit (A, B, C, D), and a fifth feedback (18, 19) connecting the second part (D) of the control circuit (A, B, C, D) to the first compensating circuit (E).
Claim 2
Independent Claim
285 words
A device for bending-compensation control of a multi-roll press of a calender for glazing of a continuous thin web, such as a paper web, which press comprises an upper roll (22) with a first compensation circuit (E), a lower roll (24) with a second compensation circuit (F), and at least one press roll (23) arranged between the upper and the lower roll, said device comprising: a press-load control circuit (A, B, C, D) comprising a first part (A) acting upon the lower roll (24) and a second part (D) acting upon the upper roll (22), a first feedback (13) for transfering from the first compensating circuit (E) to the control circuit (A, B, C, D) a first signal indicating the rate of compensation of the first compensation circuit (E), a second feedback (12) for transfering from the second compensating circuit (F) to the control circuit (A, B, C, D) a second signal indicating the rate of compensation of the second compensation circuit (F), means (B) in the control circuit (A, B, C, D) for selecting, among the first and second signals, the signal that indicates the slower rate of compensation and to brake down the roll (22 or 24) that has the higher rate of compensation, a third feedback (29, 31) connecting the first part (A) of the control circuit (A, B, C, D) to the first compensation circuit (E), a fourth feedback (30) connecting the first part (A) of the control circuit (A, B, C, D) to the second part (D) of the control circuit (A, B, C, D), and a fifth feedback (18, 19) connecting the second part (D) of the control circuit (A, B, C, D) to the first compensating circuit (E).