Design and Application of Speed Response Control Scheme for Hydraulic Vacuum Valve in Integrated Die Casting Mold
Integrated die-casting parts have the characteristics of large projection area and thin wall thickness,which requires large molds and vacuum die-casting technology.Therefore,multiple hydraulic vacuum valves driven by oil cyl-inders are required.The closing response time of hydraulic vacuum valve in the mold is currently long,while the untimely closing causes feeding of hydraulic vacuum valve,leading to mold failure.Sufficient safety valve closing time can shorten the vacuum pumping time,resulting in an increase in production vacuum degree,thus affecting product quality.Therefore,improving the response time of hydraulic vacuum valve in the mold can reduce mold failures,con-tributing to production.The design and application of the maximum speed response control of the hydraulic vacuum valve in integrated die casting mold were investigated,achieving the maximum speed response time within 35 ms.
Integrated Die CastingMold Hydraulic Vacuum ValveResponse Design
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