Hydraulic operational system for an injection molding machine
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United States of America Patent
Stats
-
Dec 3, 1996
Grant Date -
N/A
app pub date -
Oct 19, 1994
filing date -
Oct 18, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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