Nozzle and apparatus for injection molding
US7329118B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 12, 2005 |
| Grant date | Feb 12, 2008 |
| Priority date | — |
| Expiry date | Jul 26, 2026 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C45/322
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An expansion nozzle for conducting melt from a floating manifold to a mold assembly comprises a bushing having a bushing flange and spigot having a passage therethrough joining a nozzle inlet and an outlet, a head having a seating surface and a bore through the head slidably receiving the spigot so that the spigot is movable relative to the head over a range from abutting contact of opposing surfaces of the head and bushing flange to a limit of axial separation of the opposing surfaces, axial separation of opposing surfaces of the head and bushing flange being maintained throughout an operating temperature range. Springs maintain sealing contact of a seating surface of the head with a mating surface of the mold assembly. Advantageously, a locating ring provides a reaction surface for the springs and supports the head to resist moments arising from axial misalignment of the expansion nozzle and mold assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.