Device for injection moulding of plastics
US6796782B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 7, 2002 |
| Grant date | Sep 28, 2004 |
| Priority date | — |
| Expiry date | Jun 25, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C45/4005
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Device for injection moulding of plastics, with a plasticizing and injection unit (3), that is provided with at least one electrical drive system (6) for turning a plasticizing screw and for injecting the plasticized plastics material between the mould halves (16), wherein the injection moulding device is provided with at least one additional drive unit that firstly moves a machine part in a linear manner, and subsequently presses it against a fixed stop, and the additional drive unit is configured as a pneumatically actuated piston-cylinder unit (8, 18, 28, 38) and the force exerted by the piston assumes different values at a given gas pressure according to the setting of the piston.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.