Multi-bladed disc cutter for underwater pelletizers

Details Multi-bladed disc cutter for underwater pelletizers Multi-bladed disc cutter for underwater pelletizers

1986-09-18

1988-03-01

Woo, Jay H.

Plastic article or earthenware shaping or treating: apparatus

Immersed shaping orifice discharging directly into liquid...

83 99, 83580, 83906, 264142, 425311, 425313, B29B 906

Patent

active

047282754

ABSTRACT:
Multi-bladed disc cutter for cutting into pellets thermoplastic material extruded from a die plate of an underwater pelletizer, wherein the blades of the cutter are integrally formed on the periphery of a backplate and radially project therefrom, the sidewalls of the blades being integrally connected by shroud members to provide added strength against bending and twisting of the blades under load. Perforations are provided in the shroud members and backplate to permit passage of water to cool and flush away the cut pellets. Additionally, integrally formed blades may be arranged in concentric circles inwardly of the periphery of the backplate. The integral of the disc cutters avoids weakening and misalignment of the blades, saves space and permits a greater number of cutting edges than is possible in disc cutters wherein the blades are fastened to a hole by bolts. Casting the cutter integrally with its blades permits off-line grinding for final alignment purposes.

REFERENCES:
patent: 3283488 (1966-11-01), Franklin
patent: 3973890 (1976-08-01), Porter et al.
patent: 4251198 (1981-02-01), Altenburg

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