Injection molding machine pressure transducer
US5360331A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 5, 1993 |
| Grant date | Nov 1, 1994 |
| Priority date | — |
| Expiry date | Jan 5, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L9/0007
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A pressure transducer for an injection molding machine includes a housing coupled to a nozzle of an injection molding machine. A hollow stress tube, attached to the housing, through which molten material of the injection molding machine flows, bellows in response to pressure from the material. An outer ring having an opening is coupled to the stress tube such that the outer ring expands, causing displacement of the outer ring about the opening, when the stress tube bellows. A displacement sensor is included for determining the displacement of the outer ring about the opening. This displacement is directly proportional to the pressure of the material. In this manner, the pressure transducer determines the pressure of the molten material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.