Presses – Concurrent pressing and conveying – Roll type
Patent
1981-02-02
1983-06-28
Feldman, Peter
Presses
Concurrent pressing and conveying
Roll type
29116AD, 100170, B30B 304
Patent
active
043899323
ABSTRACT:
A calender wherein the uppermost and lowermost rolls of the roll train have hollow cylindrical members with inserts which cooperate with corresponding shaft-like carriers to confine the cylindrical members to vertical movements relative to their carriers. The end portions of the carriers are mounted in bearings which are movable along vertical guides in the stand of the calender. The cylindrical members contain rows of hydraulic cylinder and piston units which urge the cylindrical members against the neighboring rolls of the roll train, and the inserts in one of the cylindrical members cooperate with the corresponding carrier to hold the respective cylindrical member against movement from a fixed end position which the cylindrical member assumes when the calender is in use. The bearings of the uppermost roll are movable downwardly by mechanical shifting devices to compensate for a reduction of diameters of the rolls which have undergone surface treatment, and the bearings of the lowermost roll have shoulders which are biased upwardly by hydraulic motors to bear against stationary stops on the stand. The cylinder and piston units in each of the cylindrical members can receive fluid at a different pressure to compensate for deformation of the respective cylindrical members and/or to change the pressure upon the material which is treated by the calender.
REFERENCES:
patent: 2861504 (1958-11-01), Kane
patent: 3948166 (1976-04-01), Wenzel
patent: 4311091 (1982-01-01), Pav et al.
patent: 4319522 (1982-03-01), Marchiorio
Feldman Peter
Kleinewefers GmbH
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