Roll calendar system with different size hydrostatic supporting

Details Roll calendar system with different size hydrostatic supporting Roll calendar system with different size hydrostatic supporting

1987-04-07

1989-03-21

Falik, Andrew M.

Presses

Concurrent pressing and conveying

Roll type

291161, 72243, 100 93RP, 100170, B21B 2900, B21B 1302

Patent

active

048133493

ABSTRACT:
A system of rolls for use in a calender has an end roll with a fixed carrier and a deformable hollow cylindrical shell surrounding the carrier with freedom of radial movement and defining with a neighboring roll an elongated nip for a running web of paper, textile material or the like. The end roll has a row of primary hydrostatic supporting elements disposed between the carrier and the shell adjacent the nip and a row of secondary hydrostatic supporting elements diametrically opposite the row of primary supporting elements. The bearings between the end portions of the shell and the carrier surround rings which are movable relative to the carrier radially of the shell and can be arrested in selected positions by cylinder and piston units which are connected to a source of pressurized fluid by way of shutoff valves. The areas of those surfaces of at least some primary supporting elements which are adjacent the internal surface of the shell are greater than the corresponding areas of at least some secondary supporting elements. This contributes to a reduction of friction and to a reduction of the temperature of the shell.

REFERENCES:
patent: 3997953 (1976-12-01), Christ et al.
patent: 4327468 (1982-05-01), Kusters et al.
patent: 4328744 (1982-05-01), Pav et al.
patent: 4435971 (1984-03-01), Schuwerk
patent: 4498383 (1985-02-01), Pav et al.
patent: 4520723 (1985-06-01), Pav et al.
patent: 4625637 (1986-12-01), Pav et al.
patent: 4633774 (1987-01-01), Koosa et al.

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