Flow regulating assembly for a plastic injection machine
US5380186A · kind A · utility
Inventors
Key dates
| Filing date | Feb 14, 1992 |
| Grant date | Jan 10, 1995 |
| Priority date | — |
| Expiry date | Feb 14, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C45/586
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A flow regulating assembly for restricting plastic material from flowing directly from a central chamber of an injection piston to an accumulator cavity of a plastic injection machine and instead directing the plastic material towards the wall of the accumulator cavity thereby providing a scouring effect and reducing build-up of the plastic material on the wall of the accumulator cavity. The flow regulating assembly includes a valve member having a central opening located proximate to and in corresponding alignment with the central chamber of the injection piston and four branch passageways extended from the central opening of the valve member to external openings in a circumferential groove in an outer edge of the valve member, the outer edge of the valve member which is concentric with and proximate to the wall of the accumulator cavity. Four channels are located on a conical-shaped head portion of the valve member proximate to the circumferential groove.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.