Method for controlling injection of electric injection molding machine
US7008574B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 3, 2003 |
| Grant date | Mar 7, 2006 |
| Priority date | — |
| Expiry date | May 2, 2024 |
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 suppressing a variation of weight of articles molded by a mold having a plurality of cavities when transferring molding conditions in a hydraulic injection molding machine as they are to the electric injection molding machine. This electric injection molding machine has an electric injection mechanism for injecting a molding material into a mold by a drive force of an electric motor, an injection control unit and a servo driver for controlling the injection motor so as to follow the injection speed reference, and an reference compensation unit for compensating the injection speed reference based on the characteristics of the hydraulic drive system so that fluctuation characteristics of the injection speed with respect to the injection pressure when controlling the electric injection mechanism approximate the fluctuation characteristics of the injection speed with respect to the injection pressure in the hydraulic injection mechanism performing the injection of the molding material to the mold by the hydraulic drive system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.