Molding apparatus having a molding cavity divided by an elastic member
US5670184A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 22, 1996 |
| Grant date | Sep 23, 1997 |
| Priority date | — |
| Expiry date | Jan 22, 2016 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C45/1639
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A molding apparatus includes a movable mold-defining member mounted on the movable side of an injection machine and a stationary mold-defining member mounted on its stationary side. Those members are joinable to define a mold cavity and a runner channel therebetween. The movable mold-defining member is provided with a dividing member for dividing the runner channel, or cavity, or both into a plurality of portions. The dividing member is normally urged by an elastic member to project into the channel, or cavity. The dividing member has one side which is substantially perpendicular to the direction of flow of a molding resin material to stop its flow past the dividing member, and an opposite side cut away partly to form a recess at one end thereof, so that another molding resin material reaching the opposite side may flow into the recess and thereby move said dividing member out of the channel, or cavity by overcoming the force of the elastic member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.