Injection cylinder unit, mold and mold handling apparatus

Plastic article or earthenware shaping or treating: apparatus – Dough divider type including trap chamber – Rotating trap chamber pickup

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Details

264320, 425DIG228, B29C 302

Patent

active

039816613

ABSTRACT:
A combination injection means, mold handling apparatus, and mold is disclosed which is capable of being attached to a conventional compression style press without undue modification thereof to thereby greatly enhance the efficiency thereof. The invention includes an injection cylinder and bracket means for attaching the same to the frame of the press without modification thereof and a manifold associated with the injection cylinder. A multi-plate mold structure is also disclosed which is capable of being incrementally indexed into and out of the press and also indexed into position for filling by the injection cylinder. Alternate mold assemblies are provided so that one can be located interiorly of the press for curing purposes, while the other is being stripped. A runner system is also provided in the manifold to enhance the efficiency of filling multiple mold cavities with a minimum of waste, and also means are disclosed for separating the press for removal of the cured part. The assembly thus disclosed has a capability of obtaining the advantages of both an injection system and a compression system. Additionally the sprues formed during molding are automatically removed, thereby effecting a great labor saving; and furthermore any work done with regard to the mold is done outside of the press area, thereby enhancing the safety properties.

REFERENCES:
patent: 3121918 (1964-02-01), Jurgeleit
patent: 3121919 (1964-02-01), Turner
patent: 3591897 (1971-07-01), Perras
patent: 3833330 (1974-08-01), Aoki

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