Method for a pouring control and a storage medium for storing programs for causing a computer to work as a pouring control means

Patent metadata

Field	Value
Publication number	US-9950364-B2
Application number	US-201314369836-A
Country	US
Kind code	B2
Filing date	Feb 22, 2013
Priority date	Mar 12, 2012
Publication date	Apr 24, 2018
Grant date	Apr 24, 2018

Abstract

[Problem to Be Solved] A pouring control method for controlling an automatic pouring device with a tilting-type ladle is provided. By the method, a lip of a pouring ladle approaches a sprue of a mold without striking any object located within the range of its movement. Also, by the method, the molten metal that runs out of the ladle can accurately fill the mold. [Solution] The pouring control method comprises the steps of setting a target flow rate of molten metal to be poured, generating a voltage to input it to a motor that tilts the ladle (hereafter, the tilting motor) so as to reach the target flow rate of the molten metal based on an inverse model of a mathematical model of molten metal that runs out of a pouring ladle and an inverse model of the tilting motor, estimating the flow rate of the molten metal that runs out of the ladle, estimating the falling position and getting the estimated falling position to be a target position, and generating a trajectory for the movement of the pouring ladle wherein the trajectory causes the height of the lip of the pouring ladle above the level of a sprue of a mold to decrease.

First claim

The invention claimed is:

1. A non-transitory computer readable medium that is readable by a computer in which a program is stored, wherein the program causes the computer to carry out pouring control processes for an automatic pouring device with a tilting-type pouring ladle that control movement of the ladle in back and forth and up and down directions, and also control its tilting, wherein the processes comprise
setting a target flow rate of molten metal to be poured, generating a voltage to be input to a tilting motor so as to reach the target flow rate of the molten metal based on an inverse model of a mathematical model of molten metal that runs out of a pouring ladle and an inverse model of the tilting motor,
estimating the flow rate of the molten metal that runs out of the ladle, estimating a falling position of the molten metal and getting the falling position to be a target position, and generating a trajectory for the movement of the pouring ladle wherein the trajectory causes the height of the lip of the pouring ladle above the level of a sprue of a mold to decrease and causes the ladle not to strike any object located within the range of its movement.

2. A non-transitory computer readable medium that is readable by a computer in which a program is stored, wherein the program causes the computer to carry out pouring control processes for an automatic pouring device with a tilting-type pouring ladle that control movement of the ladle in back and forth and up and down directions, and also control its tilting, wherein the processes comprise
setting a target flow rate of molten metal to be poured,
generating a voltage to be input to a tilting motor so as to reach the target flow rate of the molten metal based on an inverse model of a mathematical model of molten metal that runs out of a pouring ladle and based on an inverse model of the tilting motor,
estimating the flow rate of the molten metal that runs out of the ladle,
estimating a falling position of the molten metal and getting the falling position to be a target position, setting a hypothetical axis at the lip of the ladle, and generating a second trajectory for the movement of the pouring ladle wherein the trajectory causes the ladle not to strike any object located within the range of its movement and minimizes the height of the lip of the pouring ladle above the level of a sprue of a mold.

Assignees

• Sintokogio Ltd
• National Univ Corporation Toyohashi Univ Of Technology

Inventors

• Suzuki Makio
• Terashima Kazuhiko
• Ito Atsushi
• Noda Yoshiyuki

Classifications

• B22D41/06

  Equipment for tilting · CPC title

• B22D37/00 Primary

  Controlling or regulating the pouring of molten metal from a casting melt-holding vessel ({B22D11/18,} B22D39/00, B22D41/00 take precedence) · CPC title

• B22D41/04

  tiltable · CPC title

• B22D46/00

  Controlling, supervising, not restricted to casting covered by a single main group, e.g. for safety reasons (controlling or regulating in general G05) · CPC title