Injection unit for an injection molding machine
US11376773B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 6, 2020 |
| Grant date | Jul 5, 2022 |
| Priority date | — |
| Expiry date | Jan 1, 2041 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C2045/5088
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An injection unit for an injection molding machine includes a cylindrical body rotatably supported in a housing interior for rotational coupling with a plasticizing screw. The cylindrical body is fixed to rotate with the plasticizing screw about an injection axis. A gear train in the housing includes a central gear mounted about, and fixed to rotate with, the cylindrical body, the central gear having an uppermost extent vertically above the injection axis and opposed first and second lateral extents on horizontally opposed sides of the injection axis. A rotary drive for powering rotation of the plasticizing screw includes a first motor having a first motor shaft rotatable about a first motor axis, the first motor axis parallel to the injection axis, the first motor axis at a first elevation below the uppermost extent of the central gear, and laterally outboard of the first lateral extent of the central gear.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.