Extruder die assembly
US6244849A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 26, 1999 |
| Grant date | Jun 12, 2001 |
| Priority date | — |
| Expiry date | Mar 26, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C48/2562
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An extruder die assembly adapted for attachment to the output end of an extruder barrel. The die assembly includes an adapter member and a die head. The adapter member is attached to the extruder barrel, and the die head is pivotally attached to the adapter member by a hinge. The die head can be rotated about the hinge from a first, closed position to a second, open position. First and second clamp plates are slidably attached to the adapter member. The clamp plates are movable from a first, clamping position to a second, unclamped position, and have clamp fingers extending therefrom. The die head has clamp ears extending therefrom in a location such as to lockingly engage the clamp fingers when the die head is in its closed position and the clamp plates are in their clamping position. The clamp fingers and clamp ears are configured to lockingly engage each other by means of tongue and groove joints. A die plate is removably attached to the outer face of said die head by a plurality of bolts passing through slots in the die plate which, when loosened, permits the die plate to be slid into a position wherein the heads of the bolts are aligned with enlarged openings in the slots.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.