Two step ejector structure for a mold for injection molding or the like
US4239174A · kind A · utility
Inventors
Key dates
| Filing date | Nov 14, 1979 |
| Grant date | Dec 16, 1980 |
| Priority date | — |
| Expiry date | Nov 14, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S425/058
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A two-step ejector structure for molds for injection molding and the like has a first ejector member arranged to be directly acted upon for ejection and to act upon an ejector pin carrier which is to be displaced in the first and second ejector steps, and a second ejector member acting upon a second ejector pin carrier which is to be displaced only in the first ejector step, and a coupling to accomplish the movement of the second ejector member during a predetermined first portion of the ejector movement of the first ejector member and thereafter release the first ejector member from the second ejector member and lock the second ejector member to a member securedly connected to a tool.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.