Mold for footwear sole

Details Mold for footwear sole Mold for footwear sole

1982-09-22

1984-04-03

Pavelko, Thomas P.

Static molds

Container-type molding device

Plural article forming mold, or molds with community feature

249110, 249121, 249126, 249130, 249170, 2642972, 2643288, 425338, B29C 100

Patent

active

044403771

ABSTRACT:
A book mold for producing a plurality of flat footwear soles simultaneously includes opposed top and bottom molds, each of which includes a pair of mold cavities; and an intermediate mold defined by a plate connected to one end of the bottom mold by a piano hinge. The intermediate mold is closed on the bottom mold, and the top mold is clamped on the intermediate mold using a clamping cylinder. Thermoplastic material is injected into the mold cavities through a port defined by a square slot in the intermediate mold, resulting in a large sprue in the intermediate mold. The soles remained attached to the intermediate mold, and when the mold is opened all soles are removed rapidly.

REFERENCES:
patent: 170975 (1875-12-01), Wetmore
patent: 3663145 (1972-05-01), Teraoka
patent: 4089501 (1978-05-01), Zahoran
patent: 4309163 (1982-01-01), Cottancin

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