Hydraulic operational system for an injection molding machine
US5580585A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 19, 1994 |
| Grant date | Dec 3, 1996 |
| Priority date | — |
| Expiry date | Oct 19, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K2201/0281
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A hydraulic operational system for an injection molding machine, including a hydraulic line network, a plurality of hydraulic drives for driving different components of the injection molding machine, a plurality of directional control valves, for connecting the hydraulic drives with the network, a constant delivery pump for supplying the hydraulic line network with hydraulic fluid, and a steplessly controlled electric motor or a multi-stage electric motor for driving the constant delivery pump, and a maximum driving speed of which is controlled so that it corresponds to the hydraulic pump operation at which the hydraulic pump provides at least one of a delivery volume and a hydraulic fluid pressure corresponding to the at east one of a maximum amount of the hydraulic fluid and a maximum pressure of the hydraulic fluid required for operating all of the plurality of hydraulic drives.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.