Heatable roll for use in calenders and the like

Details Heatable roll for use in calenders and the like Heatable roll for use in calenders and the like

1990-09-20

1992-05-12

Gorski, Joseph M.

Metal working

Means to assemble or disassemble

Puller or pusher means, contained force multiplying operator

291132, 100 93RP, 165 89, B21B 1302

Patent

active

051115646

ABSTRACT:
A calender roll wherein a cylindrical shell is rotatably mounted on a stationary carrier by way of bearings which are disposed in the end portions of the shell. The median portion of the shell is heated by a first heating device, and the end portions of the shell are heated by a discrete second heating device. The second heating device has channels which are provided in the end portions of the shell and/or indictive heaters which are adjacent to the exterior of the end portions of the shell. Alternatively or in addition to such expedients, the second heating device can include the bearings in the end portions of the shell; each such bearing includes or constitutes an axial or radial hydrostatic bearing which is heated by hydraulic fluid to thereby heat the respective end portion of the shell. The second heating device ensures that the effective length of the shell approximates or even matches the axial length of the shell.

REFERENCES:
patent: 4520723 (1985-06-01), Pav et al.
patent: 4757584 (1988-07-01), Pav et al.
patent: 4864703 (1989-12-01), Biondetti et al.
patent: 4915510 (1990-04-01), Arvidsson

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