Method and device in an adjustable-crown roll
US4856155A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 23, 1987 |
| Grant date | Aug 15, 1989 |
| Priority date | — |
| Expiry date | Nov 23, 2007 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21G1/022
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Method in an adjustable-crown roll, in which a series of hydraulic loading elements is used. A central axle of the roll is supported by axle journals, by means of deflection bearings. A cross-section of the central axle is shaped such that the axle has sufficiently high rigidity in a nip plane. In the method, the central axle is rotated about its deflection bearings over an angle, which may be within the range of about 30.degree. to 180.degree.. A free space that is created or enlarged between the central axle and a roll mantle thereby, and provided between the central axle and an inner surface of the roll mantle, is utilized as an opening gap for the nip formed by the variable-crown roll, by allowing the roll mantle to be shifted, e.g. by the effect of gravity, or by affirmatively shifting the mantle relative to the rotated central axle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.