Falling position control of outflow liquid from ladle in automatic pouring machine with manipulatable flow rate

Abstract

This paper discusses an advanced control technology in manipulatable pouring machine. In casting industry, the manipulatable poring machine is often used for improving the working environment. However, it is difficult to pour molten metal precisely by operating a tilting-ladle-type pouring machine because of pouring flow rate varied by tilting angle of the ladle. In particular, workers should be skilled to operate the pouring machine for pouring molten metal as steady flow. In order to solve this problem, we have developed the control system with manipulatable flow rate in conventional studies. This approach makes workers be able to manipulate the pouring flow rate directly and pour molten metal as steady flow. On the other hand, the trajectory of outflow molten metal is varied by varying the pouring flow rate and it causes spilling of molten metal. So in this study, we propose the manipulation system to pour the molten metal precisely into sprue by integrating the flow rate manipulation system and the falling position control of outflow molten metal. The effectiveness of the proposed system is verified by the laboratory-type pouring machine.