Melt channel geometries for an injection molding system
US8568133B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 29, 2012 |
| Grant date | Oct 29, 2013 |
| Priority date | — |
| Expiry date | Mar 29, 2032 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB33Y80/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An injection molding system is disclosed that utilizes a melt channel wherein at least a portion of the melt channel has a noncircular cross-section for balancing shear in a melt stream of moldable material that flows therethrough. The noncircular cross-section of the melt channel portion may be, for e.g., capsule-shaped, extended egg-shaped, oval, teardrop-shaped, or peanut-shaped. A flow splitter is also disclosed that is positioned offset from a central axis of an upstream melt channel to protrude between inlets of respective downstream melt channels, where the upstream melt channel splits into the downstream melt channels, to thereby create a narrower inlet into one of the downstream melt channels and a wider inlet into the other of the downstream melt channels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.