Patent ID: 6170557
Filing Date: 2001-01-09
Classification: B22C

Abstract:
An automatic machine for testing performances of green sand molding, said machine comprising:a machine support having a bottom portion;a feeding device mounted on said machine support and provided with a transporting apparatus for extracting the green sand, and a funnel located under said transporting apparatus;a vibration device mounted on said machine support and provided with a seat for receiving the green sand from said funnel, said seat provided with a screen for selecting the green sand and a vibrator for providing a power source for selecting the green sand, said seat further provided thereunder with a funnel for separating the green sand, and an inclined plate for removing the green sand;a catching device having a guide slide seat slidable in the bottom of said machine support and located over a loadcell meter, said catching device further having a test piece sleeve of a hollow construction and slidable on said guide slide seat, said test piece sleeve intended to receive the green sand from said funnel located under said vibration device, said guide slide seat provided with a discharging port;a testing device having an action rod and a displacement sensor, said action rod being driven by a cylinder to ascend or descend and provided with a test head, said action rod being opposite in location to said loadcell which is mounted on the bottom of said machine support; anda detecting device having a cylinder which is fastened with said machine support and is provided with an air admitting seat corresponding in location to said test piece sleeve and having a passage attached to an end port, said passage provided with an air inlet and an air outlet, with said air inlet being connected with a gas supplier, and with said air outlet being connected with a micropressure sensor.