Insole, apparatus for molding and method of making shoes

Claim 1

An injection mold for making plastic insoles designed to have a specific thickness and quite irregular configuration adapting it for attachment to unit sole structures and the ends of vamp and heel means for a pair of shoes, comprising a pressure containing mold means which includes a first platen and a second platen moveable relatively toward each other to close the mold means and being adapted to contain a plastic molding pressure, and away from each other to an open position to permit a molded insole to be removed from the mold means, a base plate, a first apertured mold sheet having substantially planar surfaces adapted to be fixedly secured in a precise position relative to said base plate and a second apertured mold sheet having substantially planar surfaces adapted to be secured in a precise position relative to said first sheet, the peripheries of said apertures in each of said first and second mold plates coinciding to form the peripheries of the insoles produced therein, said first mold sheet having integral land means extending inwardly into its aperture to form recesses to receive the ends of said vamp and heel means, said platens holding said base plate and apertured mold sheets in a juxtaposed position when said mold means is closed whereby they cooperate to provide a mold cavity, means to feed a plastic to be molded into the mold cavity thus provided, and the combined thickness of said apertured mold sheets being equal to the designed thickness of an insole, and the molded insole being removed from between said platens when they are moved to said open position.