Electric injection molding machine for controlling injection of electric injection molding machine
US6669459B2 · kind B2 · utility
2Cited by
4References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 19, 2001 |
| Grant date | Dec 30, 2003 |
| Priority date | — |
| Expiry date | Aug 15, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C2945/76936
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An electric injection molding machine capable of maintaining a quality of molded articles and capable of minimizing weight variation of molded articles. An electric injection mechanism injects molding material into a mold using an electric motor. An injection control unit and a servo driver control the motor so as to follow an injection speed reference. A compensation unit compensates the injection speed reference based on characteristics of a hydraulic drive system so that fluctuation of injection speed with respect to the injection pressure approximate the fluctuation characteristics of a hydraulic injection mechanism.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.