Punch for compressing machine

Details Punch for compressing machine Punch for compressing machine

1977-07-13

1978-08-01

Flint, Jr., J. Howard

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

425353, 425354, B30B 1108

Patent

active

041040147

ABSTRACT:
A tablet-making machine is provided which includes relatively movable upper and lower punches for compressing a charge of material into a tablet. The machine includes a die head having a plurality of die cavities and axially-extending passageways in which the lower punches are mounted for reciprocating movement. Suitable drive means are also provided for controlling the reciprocation of the lower punches within the axial passageways relative to the die head. In accordance with the invention, each of the lower punches is provided with an opening extending completely through the punch and in a direction transverse to the longitudinal axis of the lower punch. Spring-biased plungers are positioned within each of the transverse openings and may be adjusted relative to the lower punches. Means are also provided for adjusting each of the plungers to engage the walls of their respective axial passageways so that the amount of pressure applied by the plungers to the walls of the passageways may be fixed at a predetermined pressure to prevent the lower punches from freely moving relative to the die head.

REFERENCES:
patent: 1679408 (1928-08-01), Davis et al.
patent: 2411379 (1946-11-01), Langhammer
patent: 2449008 (1948-09-01), Pecker et al.
patent: 3050809 (1962-08-01), Kupka
patent: 3332367 (1967-07-01), Sperry et al.
patent: 3337915 (1967-08-01), Alexander
patent: 3408963 (1968-11-01), Alexander et al.
patent: 3414940 (1968-12-01), Vinson
patent: 3647333 (1972-03-01), Smith

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