Injection mold with end core locks and extended side core locks

Details Injection mold with end core locks and extended side core locks Injection mold with end core locks and extended side core locks

1986-09-08

1988-03-22

Woo, Jay H.

Plastic article or earthenware shaping or treating: apparatus

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

With coupling between charger and mold

249 64, 249176, 2643288, 425577, 425468, 425441, B29C 4513

Patent

active

047325585

ABSTRACT:
An injection mold assembly for formation of thin walled multi-partitioned plastic containers. An array of cantileveredly mounted and spaced apart cores are extendable into a female mold assembly which includes a pair of side cavity cams and end cavity cams closeable upon the array, but spaced therefrom to form the plastic container therebetween. A plurality of side locking wedge shaped fingers are extendable into the slots spacing the cores apart. The fingers are arranged to extend into the opposite sides of the array of cores in a direction perpendicular to the longitudinal axis of the array spacing the cores apart while plastic is injected into the assembly by injectors mounted to the female mold. A pair of end pushers contact the two outermost cores in the array limiting outward movement of the cores during the injection step. The end pushers likewise extend in a direction perpendicular to the longitudinal axis of the array. In two embodiments, the fingers are moveable to and from the array by vertical or horizontal hydraulic cylinders and are moveable apart from the side cavity cams as the mold assembly is opened. Further side locking members move externally against the cores limiting outward movement thereof.

REFERENCES:
patent: 3473197 (1969-10-01), Wilds et al.
patent: 3509603 (1970-05-01), Halsall et al.
patent: 3816047 (1974-06-01), Mohler
patent: 4278417 (1981-07-01), Wilds et al.
patent: 4481161 (1984-11-01), Grannen, III
patent: 4570897 (1986-02-01), Von Holdt
patent: 4576568 (1986-03-01), Grannen, III

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