Method and apparatus for the control of injection molding
US6309571A · kind A · utility
2Cited by
11References
12Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Feb 27, 1998 |
| Grant date | Oct 30, 2001 |
| Priority date | — |
| Expiry date | Feb 27, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C2945/76983
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
This invention relates to a method and apparatus for the control of injection molding and, in particular, for determining a suitable time for transfer from injection velocity control to packing pressure control. The invention uses a derivative of, preferably the nozzle pressure, and inputs this to a fuzzy inference system. The fuzzy inference system uses said rules and knowledge to provide a suitable transfer time as an output. It is preferred that the sample pressure is filtered prior to calculation of the derivative.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.