Presses – Automatic or material triggered control – Of actuating means
Patent
1984-09-07
1986-07-01
Feldman, Peter
Presses
Automatic or material triggered control
Of actuating means
100162B, 100170, 100 47, 29116AD, 72243, B30B 1514, B30B 1516
Patent
active
045973261
ABSTRACT:
Regulating means in a roller press comprising a number of rolls for the adjustment of a press load and a deflection in deflection compensated rolls, especially in a calander stack provided for the glazing of a continuous thin running web like a paper web. The outer-most rolls in said roller press comprise means for the deflection compensation and one or several different press rolls, which are located between these outer-most rolls. Said roller press is provided with a feed-back connection arranged between a control circuit of the press load and a deflection compensation circuit of the deflection compensated rolls, which feed-back maintains a ratio between the press load and the hydraulic pressure in a roll of said compensable rolls. Said feed-back is further arranged in accordance to an alteration of a set point of the press load to control said press load, whereby said feed-back slows down a change speed in the press load so, that said change is carried out in suitable relation to the control speed of the deflection compensated rolls.
REFERENCES:
patent: 4023480 (1977-05-01), Biondetti
patent: 4154160 (1979-05-01), Kusters
patent: 4222255 (1980-09-01), Lehmann
patent: 4472958 (1984-09-01), Biondetti
patent: 4480452 (1984-11-01), Schnyder
patent: 4481799 (1984-11-01), Glattfelder et al.
Feldman Peter
Oy Wartsila Ab
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