Platen type molding press
US4273524A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 18, 1978 |
| Grant date | Jun 16, 1981 |
| Priority date | — |
| Expiry date | Oct 18, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S425/223
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
In a molding press having fixed and movable platens for mounting mold halves, the movable platen is connected through thrust rods and a thrust plate to the movable component of an hydraulic piston-cylinder platen drive unit the fixed component of which is attached to a fixed base. A high pressure piston-cylinder mold clamping unit of the pancake type interengages the movable platen and a pancake cylinder support plate mounted for movement along the thrust rods and arranged for abutment by the thrust plate. The pancake cylinder support plate and fixed base are joined together by toggle joints operated by a piston-cylinder locking unit supported pivotally on arms extending pivotally from the pancake cylinder support plate and fixed base. The drive unit thus is arranged in parallel with the series arrangement of the toggle joints and mold clamping unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.