Adjustable valve pin actuator for an injection molding apparatus
US7347684B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 29, 2005 |
| Grant date | Mar 25, 2008 |
| Priority date | — |
| Expiry date | Jun 14, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49815
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An actuator for a valve pin of an injection molding apparatus includes an adjustment piece coupled to a valve pin via a connector and axially movable relative to a piston to adjust an axial position of the valve pin relative to a mold gate. A removable locking device restricts axial movement of the adjustment piece with respect to the piston. An indicator is provided for determining the position of the valve pin relative to a mold gate based on the position of the adjustment piece with respect to the piston. An anti-rotation device is provided to inhibit rotational movement of the valve pin. During maintenance, the actuator piston and adjustment piece may be extracted with or without the valve pin. The actuator may be reassembled with correct axial position via the piston/adjustment piece relationship and correct rotational position of the valve pin via the anti-rotation device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.