Sand core making machine method
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United States of America Patent
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Jul 28, 2020
Grant Date -
Sep 12, 2019
app pub date -
May 23, 2019
filing date -
Dec 20, 2016
priority date (Note) -
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status (Latency Note)
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Abstract
Apparatus and methods for making a sand core in a core box are provided. According to one embodiment, the method includes introducing into a cavity of the core box a sand-binder mixture, the sand-binder mixture being introduced into the cavity through an inlet conduit of the core box. Pressurized air is then introduced into the cavity while a flow rate of the pressurized air is measured in a first air flow path upstream the core box. A control unit automatically alters the degree of opening of an electronically controlled flow regulator located in a second air flow path located downstream an outlet conduit of the core box depending on the measured flow rate to regulate the flow of pressurized air into the cavity of the core box.
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