Mold with recess for convex insert portion

Details Mold with recess for convex insert portion Mold with recess for convex insert portion

1995-02-10

1997-06-10

Nguyen, Khanh P.

Plastic article or earthenware shaping or treating: apparatus

Distinct means to feed, support or manipulate preform stock...

Opposed registering coacting female molds

425117, 425577, 425441, 425443, 249 93, 249 94, 249 95, B29C 4516, B29C 4536, B29C 4544

Patent

active

056373279

ABSTRACT:
There is disclosed a mold for molding a box-shaped product which is open at one side face thereof, and has a resilient insert extending into an interior of the product through a side face of the product opposite to the opening. The insert has a convex portion formed on one surface thereof. A mold cavity is defined by a pair of metal mold halves and a pair of slide cores. The mold halves form an outer shape of the product, and the slide cores form an inner shape of the product. One of the slide cores has a recess for receiving the convex portion of the insert. In the molding, after a resin is cured, the other slide core is retracted before the metal mold halves are opened apart from each other, and then the one slide core with the recess is retracted.

REFERENCES:
patent: 3970488 (1976-07-01), Nelson
patent: 4255111 (1981-03-01), Suzuki
patent: 4372524 (1983-02-01), Pailler
patent: 5073326 (1991-12-01), Craves et al.

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