Rotary press

Details Rotary press Rotary press

1998-01-21

2000-09-12

Mackey, James P.

Plastic article or earthenware shaping or treating: apparatus

Plural sets each comprising a female mold and opposed...

Molds or press members traveling transversely to molding motion

425211, B30B 1108

Patent

active

061168890

ABSTRACT:
A rotary press, especially for preparing tablets, with a frame, a rotor with drive, at least one pressure roller unit, and a housing. To improve the absorption of the forces introduced into the pressure roller unit, of which there is at least one, and to design the rotary press as a low-vibration and low-noise press, a massive base plate (1) accommodating the rotor (2) with the drive and the pressure roller unit (3) is supported by the base frame (6) by elastic mounts (7). The rigidity of the elastic mounts (7) and the mass of the assembly unit formed by the rotor (2) with the drive and the pressure roller unit (3), of which there is at least one, are coordinated with one another such that the natural frequency of this vibration system in all six possible degrees of freedom is substantially lower than the lowest punch engagement frequency occurring at the lowest speed of rotation, which is the excitation frequency.

REFERENCES:
patent: 2997741 (1961-08-01), Crossley
patent: 3347502 (1967-10-01), Gwinn, Jr.
patent: 3566806 (1971-03-01), Forster et al.
patent: 3625466 (1971-12-01), Marshall et al.
patent: 3891375 (1975-06-01), Pilewski et al.
patent: 4053266 (1977-10-01), Friedricks
patent: 4729859 (1988-03-01), Munsey et al.
patent: 5612065 (1997-03-01), Keller
Werner A. Kral, Ing., Feb. 1986, "Schwingungsdampfung--Auffangenzerstorender Krafte", Technica Feb. 1986.

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