Control device and control method for injection molding machine
US11724428B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 2, 2020 |
| Grant date | Aug 15, 2023 |
| Priority date | — |
| Expiry date | Jan 23, 2041 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C2945/76939
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A control device for an injection molding machine is equipped with a pressure acquisition unit that acquires a pressure of a resin inside a cylinder, a reverse rotation control unit that causes a screw to be rotated in reverse based on a predetermined reverse rotation condition so as to reduce the resin pressure after having moved the screw rearward to a metering position, a compensation amount calculation unit that calculates a compensation amount to be made with respect to the reverse rotation condition, based on the resin pressure inside the cylinder acquired by the pressure acquisition unit when the reverse rotation of the screw is stopped, and a predetermined compensation function, and a compensation processing unit configured to compensate the reverse rotation condition based on the compensation amount calculated by the compensation amount calculation unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.