Injection molding hot runner nozzle with removable seal
US6821112B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 10, 2002 |
| Grant date | Nov 23, 2004 |
| Priority date | — |
| Expiry date | Jun 5, 2023 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C2045/2761
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A flow nozzle (10) that conveys plastic melt from an injection unit of a molding machine to a mold cavity (72) has an improved, removable seal design. The nozzle body (12) is designed to threadedly receive a nozzle tip (24) that includes an outlet (30) that communicates with the mold cavity. A thin-wall, cylindrical seal ring (40) includes a compression portion that is received between the nozzle body and nozzle tip and is compressed to create a seal between these two elements when the tip is assembled to the nozzle body. The seal ring further includes a sealing portion (50) that encircles the nozzle tip and has an outer diameter slightly larger than the outer diameter of the nozzle body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.