Plastic and nonmetallic article shaping or treating: processes – Forming articles by uniting randomly associated particles – With subsequent cutting – grooving – breaking – or comminuting
Patent
1992-10-19
1993-09-28
Theisen, Mary Lynn
Plastic and nonmetallic article shaping or treating: processes
Forming articles by uniting randomly associated particles
With subsequent cutting, grooving, breaking, or comminuting
264141, 425331, 425DIG230, B29B 900
Patent
active
052484696
ABSTRACT:
An apparatus provides separate coarse rate and fine rate adjustability of spacing between extrusion rolls and a surrounding extrusion die in a pellet mill, including a roller tire, for each extrusion roll, mounted on bearings which are supported on a hollow shaft having a cylindrical eccentric bore; a solid axle shaft disposed within each hollow shaft and having eccentric bearing-journaled extensions and an axial length greater than that of the hollow shaft; a rigidly mounted front roller support plate having a bore for supporting said bearing-journaled eccentric extension at a front end of said solid axle shaft for each said roll, the bore being aligned with a matching bore for supporting a bearing-journaled eccentric extension at a rear end of each solid axle shaft for each said roll. Attached to each hollow shaft is a provision for rotating the hollow shaft to adjust a spacing distance between the roller tire and the extrusion die and for holding the shaft in a desired rotated position. The eccentric extensions of the solid roller shaft have a device, which can be located internally or externally to the mill, for rotating the solid shaft to adjust the spacing distance at a different rate than that produced by rotation of the hollow shaft.
REFERENCES:
patent: 3280426 (1966-10-01), Meakin
patent: 3354845 (1967-11-01), Schultz
patent: 3467031 (1969-09-01), Hafliger
patent: 3679343 (1972-07-01), Gilman
patent: 3932091 (1976-01-01), Vink
patent: 3981664 (1976-09-01), Bittner et al.
patent: 4770621 (1988-09-01), Groebli et al.
patent: 4838779 (1989-06-01), Vries
California Pellet Mill Company
Palermo Robert F.
Theisen Mary Lynn
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