Metal working – Means to assemble or disassemble – Puller or pusher means – contained force multiplying operator
Patent
1988-09-06
1990-01-02
Goldberg, Howard N.
Metal working
Means to assemble or disassemble
Puller or pusher means, contained force multiplying operator
29124, 29125, 291295, B21B 2700
Patent
active
048903728
ABSTRACT:
A press roll in a paper machine comprising a body cylinder mounted between two end pieces and fastened thereto, and a press cylinder surrounding the body cylinder and spaced apart therefrom. The press cylinder, which is rigid and receives the radial forces of the roll acting in the nip of the press, is fastened at the ends thereof radially immovably relative to the body of the roll. The press cylinder is at one end fastened to one end piece by means of axial bolts, whereby the conical surface of the press cylinder and a corresponding conical surface in the end piece are pressed against each other, thus clamping the press cylinder at the end thereof tightly against the end piece. At the other end of the roll the press cylinder is fastened to the other end piece of the roll by means of a separate fastening flange which is fastened both to the press cylinder and to the end piece by means of axial bolts. The fastening flange comprises an annular projection provided at both sides with a conical surface. On clamping the surfaces are pressed against conical surfaces provided on the inside of the press cylinder and on the end piece, respectively. The press cylinder can be detached and removed from the roll, so that it is withdrawn totally over the end piece of the roll in the axial direction.
REFERENCES:
patent: 4107831 (1978-08-01), Siegfried
patent: 4494284 (1985-01-01), Post
patent: 4621400 (1986-11-01), van der Graff
patent: 4658486 (1987-04-01), Schonemann
patent: 4782568 (1988-11-01), Halttula
Cuda Irene
Goldberg Howard N.
OY Tampella AB
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