Continuous extrusion apparatus
US5836191A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 18, 1996 |
| Grant date | Nov 17, 1998 |
| Priority date | — |
| Expiry date | Nov 18, 2016 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21C23/005
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A tooling assembly for a continuous extrusion apparatus includes a die top positioned in a shoe arranged to be urged into contact with a rotating wheel having a circumferential groove. An abutment body is positioned as a sliding fit in a recess provided in the die top and is formed with a spine arranged to project into the circumferential groove and with shoulders flanking the spine arranged to co-act with the cylindrical surface of the wheel adjacent an abutment face. The abutment face lies in a plane inclined slightly to an axial plane through the wheel and the faces on the abutment body seating on faces of the recess are aligned such that forces arising during extrusion act to urge the abutment body into the recess. Where the wheel is formed with a plurality of circumferential grooves, either a corresponding plurality of abutment bodies and associated recesses in the die top are provided or a composite abutment body having spines and shoulders formed as lands intermediate the spines seating in a single recess in the die top is provided. The spine and shoulders are of a linear form, thereby facilitating manufacture. In addition, replacement of the abutment is greatly facilitated …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.