Multi-cavity melt distribution manifold

Details Multi-cavity melt distribution manifold Multi-cavity melt distribution manifold

1992-05-15

1993-07-13

Heitbrink, Tim

Plastic article or earthenware shaping or treating: apparatus

Female mold and charger to supply fluent stock under...

With means to heat or cool

2643288, 26432815, 425572, B29C 4520

Patent

active

052271811

ABSTRACT:
An injection molding manifold for distributing pressurized melt from a common inlet to thirty two outlets. The steel manifold has rear and forward plate portions which are integrally brazed together. The rear portion is drilled and plugged along a first transverse plane to provide the melt passage with branches from a common inlet portion to four intermediate portions. Four sets of matching grooves are machined in the joining faces of the rear and forward portions whereby each intermediate portion of the melt passage in turn branches along a second transverse plane to eight outlet portions, each leading to a cavity. The combination of the melt passage branching in several different directions in two different transverse planes with the second plane having different sets of curved portions allows the melt passage to have a large number of outlets while still having smoothly curved bends without having a leakage problem.

REFERENCES:
patent: 3940224 (1976-02-01), Armour
patent: 4609138 (1986-09-01), Harrison
patent: 4620958 (1986-11-01), Wiechard
patent: 4648546 (1987-03-01), Gellert
patent: 4688622 (1987-08-01), Gellert
patent: 4761343 (1988-08-01), Gellert
patent: 4820147 (1989-04-01), Gellert
patent: 4832254 (1989-05-01), Peuke et al.
Your Connection to Injection Molding Excellence: Modular Manifolds, Apr. 1986.

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