| 摘要 |
<p>Programmable hydraulic power controls for an injection molding machine having a proportional-response flow control valve arranged in the main supply line of a variable delivery pump and a feedback line with a control diaphragm linking a point on the supply line behind the flow control valve with the pump control member, and a proportional-response pressure control valve in a branch line to the feedback line, each valve being controlled by a proportional-force electromagnet with a position transducer and electronic feedback loop for position verification in accordance with a nominal program signal fed to the electromagnet.</p> |
