Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – Forming plural articles
Patent
1992-05-05
1993-11-16
Heitbrink, Jill L.
Plastic and nonmetallic article shaping or treating: processes
Mechanical shaping or molding to form or reform shaped article
Forming plural articles
425192R, 425195, 425577, B29C 4526
Patent
active
052621162
ABSTRACT:
Injection molding takes place in a molding chamber which is formed between a core-defining member as part of a mold core assembly and a cavity-defining member as part of a mold cavity assembly. One removes a first mold core and mold cavity-defining member from the mold core and mold cavity assemblies when desired molding by means thereof has been accomplished, and replaces them with a new core-defining member and cavity-defining member to form a molding chamber of a different design. These are respectively secured to the remainder of the mold core assembly and mold cavity assembly, so that the main portions of the mold core and mold cavity assemblies may be retained in a mold press, and differing products may be manufactured. Also, a last object may be molded in the molding chamber of the mold core and cavity-defining members and then, without opening the core-defining member and cavity-defining member, the latter may be removed from the respective remainders of the mold core assembly and mold cavity assembly with the last molded object residing in the molding chamber.
REFERENCES:
patent: 3564660 (1971-02-01), Darnell
patent: 3930778 (1976-01-01), Roncelli
patent: 4795125 (1989-01-01), Boros et al.
patent: 4828479 (1989-05-01), Pleasant
patent: 4856977 (1989-08-01), Von Holdt
patent: 4867668 (1989-09-01), Miyairi
patent: 4927347 (1990-05-01), Golata et al.
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