Method of two-stage injection molding of air conditioner...

Details Method of two-stage injection molding of air conditioner... Method of two-stage injection molding of air conditioner...

2007-06-12

2007-06-12

Lee, Edmund H. (Department: 1732)

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

To produce composite, plural part or multilayered article

C264S250000

Reexamination Certificate

active

10406601

ABSTRACT:
A method of two-stage injection molding of an air conditioner outlet vent device is provided, the device including a housing, a plurality of blades pivotably supported by the housing and disposed in parallel to each other within the housing, and a link operatively connecting the blades. The plurality of blades are injection-molded in a secondary injection step subsequent to a primary injection step in which the housing is molded. In the secondary injection step, a molten resin is injected into cavities formed within a mold device in a closed mold state from a plurality of gates provided in portions of the mold device corresponding to projections of the blades. It is thus possible to improve the strength of link shafts and the projections while preventing any malfunction of the blades pivoting and any deterioration of the surface appearance, as well as to increase the degrees of freedom in changing the gate diameter.

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