Control device and control method for injection molding machine
US11597130B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 11, 2020 |
| Grant date | Mar 7, 2023 |
| Priority date | — |
| Expiry date | Dec 22, 2040 |
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, a reverse rotation control unit that causes a screw to be rotated in reverse, after the screw has reached a predetermined metering position, a measurement unit that measures an elapsed time or a rotation amount of the screw from when the screw has reached the predetermined metering position, and a rearward movement control unit that initiates sucking back of the screw in an overlapping manner with the reverse rotation of the screw, in the case that a predetermined rearward movement initiation time has elapsed, or in the case that the screw has been rotated by a predetermined rearward movement initiation rotation amount, from when the screw has reached the predetermined metering position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.