Method of two-stage injection molding of air conditioner outlet vent device
US7229582B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 4, 2003 |
| Grant date | Jun 12, 2007 |
| Priority date | — |
| Expiry date | Apr 4, 2023 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C45/162
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.