Injection molding machine
US11554525B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 26, 2020 |
| Grant date | Jan 17, 2023 |
| Priority date | — |
| Expiry date | Oct 22, 2040 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C2945/76856
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An injection molding machine includes: a first driving device rotating a screw provided inside a heating cylinder; a second driving device moving the screw forward and backward; a metering control section configured to, by controlling the first driving device and the second driving device, to meter resin while melting the resin, and thereafter rotate the screw in reverse to thereby reduce the pressure of the resin; a first sensor unit for detecting the pressure; a second sensor unit for detecting one or more kinds of physical quantities that affect the change of the pressure; and a prediction section predicting decompressing rotation information based on the pressure detected by the first sensor unit and the one or more kinds of physical quantities detected by the second sensor unit. The metering control section controls the first driving device based on the decompressing rotation information predicted by the prediction section.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.