초록 ▼

Upper and lower injection mold halves forming between them successive spaces defining the configuration of parts that are to be injection molded and integrally joined into a compound structure. Movable plate means are transversely disposed between the successive spaces and have an aperture. The plat

Upper and lower injection mold halves forming between them successive spaces defining the configuration of parts that are to be injection molded and integrally joined into a compound structure. Movable plate means are transversely disposed between the successive spaces and have an aperture. The plate means initially blocks fluid communication between successive spaces in the mold so that one part can be injection molded, followed by injection molding of the second part after the plate means has been moved so that its aperture allows the injected plastic material of the second part to flow through the aperture and into contact with the molded first part, thereby plastically uniting the two parts into an integral or compound structure.

대표청구항 ▼

In injection molding apparatus, the improvement for plastically uniting a plurality of successive parts of respective plastic materials, comprising: first and second mold halves forming between them a plurality of successive spaces defining said successive parts for respectively receiving injections

In injection molding apparatus, the improvement for plastically uniting a plurality of successive parts of respective plastic materials, comprising: first and second mold halves forming between them a plurality of successive spaces defining said successive parts for respectively receiving injections of said respective plastic materials, and plate means transversely disposed between said successive spaces and having an aperture of predetermined configuration, said plate means being movable between (1) a first position in which it blocks fluid communication between two adjacent ones of said successive spaces so that one of said parts can be molded in one of those two spaces and (2) a second position in which fluid communication between said two adjacent spaces can occur via said aperture so that while a second one of said parts is being successively molded in the other of said adjacent spaces said second part is concurrently joined through said aperture to the adjacent part in said one space to form an integral structure of said two injection molded parts.