Pin-barrel extruder having adjustable pins
US4629327A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 12, 1985 |
| Grant date | Dec 16, 1986 |
| Priority date | — |
| Expiry date | Jul 12, 2005 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C2948/92895
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A pin-barrel extruder suitable for processing rubber and thermoplastic plastics materials having pin adjustment means is disclosed. The extruder comprises a barrel having a screw rotating therein. Pins project radially inwardly into the hollow interior of the barrel. These pins are distributed both uniformly around the periphery of the barrel and in axial alignment with one another. Axially aligned pins are made adjustable, with regard to their depth of penetration into the barrel by being connected to a bar or rail. This bar or rail is disposed radially outwardly of the barrel but extends parallel to the axis thereof. Actuating means are provided for displacing the bar or rail, and hence the pins, relative to the barrel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.