Spring-loaded platen rollers with a sealed axle

Details Spring-loaded platen rollers with a sealed axle Spring-loaded platen rollers with a sealed axle

1986-10-08

1988-03-15

Woo, Jay H.

Plastic article or earthenware shaping or treating: apparatus

Press forming apparatus having opposed press members

100918, 193 35B, 384 54, 384104, 425411, B30B 1502

Patent

active

047310090

ABSTRACT:
Spring-loaded rollers for a mold have a sealed axle mount which passes through the roller into a supporting portion of the seats in the platen to prevent the roller from rotating, twisting or otherwise moving in the seat in the roller assembly and in the mold. The roller assembly is easily removed from its seat through the use of a removal device cooperating with screw threads in the roller. A plurality of rollers are used to permit a mold to be easily moved into and out of position in a press. The mold is thus mounted in position since the rollers limit the ability of the mold to move laterally. The seals are dished TEFLON disks which overfit the axle and interfit either against the sides of the roller or within slots cut circumferentially on either side of the roller. The walls of the slot may be undercut and/or otherwise shaped. The invention makes it very easy to move the heavy molds into and out of the press thereby reducing operator fatigue. The invention is keyed and grooved to keep the rollers aligned so the molds will move into proper location in the press. Wear and tear is reduced on both the molds and the platens. The axle is sealed to keep dirt out of the axle hole to prevent the rollers from siezing or jamming.

REFERENCES:
patent: 1381188 (1921-06-01), Gury
patent: 2009281 (1935-07-01), Stein
patent: 2699366 (1955-01-01), Heinrich
patent: 4301673 (1981-11-01), Yonezawa
patent: 4317358 (1982-03-01), Yonezawa et al.
patent: 4528903 (1985-07-01), Lerch

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