Injection molding manifold having a pair of cooling bores on opposite sides of the melt passage
US5007821A · kind A · utility
18Cited by
3References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 5, 1990 |
| Grant date | Apr 16, 1991 |
| Priority date | — |
| Expiry date | Mar 5, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C2045/7362
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An injection molding heated manifold having a melt passage with a longitudinal portion to convey melt from a molding machine to a number of different nozzles. The steel manifold has a pair of cooling bores extending parallel to and equally spaced on opposite sides of the longitudinal portion of the melt channel. A cooling fluid, such as air, flows through the cooling bores to quickly cool the manifold after the system is shut down to minimize deterioration of the melt in the melt channel. The air flows helically around spiral vanes which are mounted in the cooling bores to avoid temperature stratification along the melt passage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.