초록 ▼

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 co

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.

대표청구항 ▼

A roller press comprising first and second outer, deflection-compensated rolls and at least one inner roll disposed between the outer rolls whereby a plurality of nips are established between the rolls, each of the outer rolls having a mantle portion that has two ends and engages an inner roll, and

A roller press comprising first and second outer, deflection-compensated rolls and at least one inner roll disposed between the outer rolls whereby a plurality of nips are established between the rolls, each of the outer rolls having a mantle portion that has two ends and engages an inner roll, and a shaft portion that extends axially of the mantle portion and has end sections that project axially beyond the two ends of the mantle portion, and the roller press also comprising load means for applying a press load to the outer rolls by way of the end sections of the shaft portions, press load control means for controlling the magnitude of the press load applied by the load means, first and second mechanisms associated with the first and second outer rolls respectively for applying forces to those rolls to compensate for deflection thereof, said first and second mechanisms providing signals that are representative of the deflection-compensation forces applied to the first and second outer rolls respectively, and regulating means connected to receive said signals and also connected to said press load control means for maintaining predetermined respective relationships between the deflection-compensation forces applied to said outer rolls and the magnitude of the press load applied to the outer rolls.