Extrudate cutting apparatus for controlling the flow of extrudate from an orifice fitting
US4993934A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 30, 1989 |
| Grant date | Feb 19, 1991 |
| Priority date | — |
| Expiry date | Jun 30, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T83/416
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An extrudate cutting apparatus including a generally cylindrically shaped shaping die having an upper surface and a lower surface with an eccentrically positioned opening extending therebetween. The opening releasably receives an orifice fitting for permitting extrudate to pass from the fitting through the opening. A generally tubular housing rotatably receives the shaping die therein. A nozzle knife is integral with the housing and is in facing relation with the lower shaping die surface. The knife includes an aperture for allowing extrudate passing from the orifice fitting to pass therethrough unimpeded when the aperture and the shaping die opening are in registry. A reciprocating bar is provided for imparting rotational movement to the tubular housing for moving the housing between an open position wherein the shaping die opening and the aperture are in registry and a closed position wherein the shaping die opening and the aperture are completely out of registry to prevent any of the extrudate from passing through the aperture. In this manner, the aperture severs the extrudate passing through the opening as the housing moves from the open to the closed position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.