Attachment mechanism for interchangeable injection molding dies
US4544340A · kind A · utility
Inventor
Key dates
| Filing date | Jul 31, 1984 |
| Grant date | Oct 1, 1985 |
| Priority date | — |
| Expiry date | Jul 31, 2004 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C45/1742
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A mechanism for the clamping attachment of interchangeable injection molding dies to the die carrier plates of an injection molding machine featuring a plurality of clamping plungers in axial guide bores of the die carrier plates, each clamping plunger having a clamping nose engaging a clamping shoulder of an oversized back plate of the die half, clamping the latter against the die carrier plate, when forcibly retracted by means of a transversely guided wedge rod driven by a hydraulic cylinder assembly. The wedge rod engages opposite faces of an inclined transverse plunger bore, for a self-locking clamping drive configuration and a positive extension drive configuration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.