Multi-material hot runner nozzle
US11370154B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 14, 2017 |
| Grant date | Jun 28, 2022 |
| Priority date | — |
| Expiry date | Mar 24, 2039 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C2045/279
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An injection molding machine includes a nozzle with a nozzle body having inner and outer flow channels, and at least one intermediate flow channel in between. A valve stem is slideable in the inner flow channel and moveable between open and closed positions. In a first closed position, the valve stem blocks an outlet of the inner flow channel but not outlets of the outer or at least one intermediate flow channels. In the open position, melt exiting the at least one intermediate flow channel simultaneously intersect melt exiting the outer and inner flow channels. The flow channels may be arranged concentrically. The outlets of the flow channel may be separated by a knife edge. The outlets of the flow channels may be adjacent to one another. The inner and outer flow channels may be substantially perpendicular to one another, but not to the at least one intermediate flow channel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.