Device and Method for Spraying Mold-Releasing Agent

Abstract

A device for spraying a mold-releasing agent and a method therefor is provided by which a sticker and a defective drawing of a mold are prevented from occurring by detecting a leak of the mold-releasing agent, a clogging of a nozzle for spraying the mold-releasing agent, or a failure of a piece of equipment of the device for spraying the mold-releasing agent, to properly control the volume of the sprayed mold-releasing agent. A device 1 for spraying a mold-releasing agent that sprays a mold-releasing agent A on a pattern plate 20 in a molding machine that forms molds from molding sand S by using a flask 10 and the pattern plate 20 , comprising a nozzle 30 for spraying the mold-releasing agent that sprays the mold-releasing agent A on the pattern plate 20 , a piping 40 for supplying the mold-releasing agent that supplies the mold-releasing agent A to the nozzle 30 for spraying the mold-releasing agent, a flow sensor 42 that measures a flow rate of the mold-releasing agent A that flows in the piping 40 for supplying the mold-releasing agent, and a controller 90 that detects a leak of the mold-releasing agent A, a clogging of the nozzle 30 for spraying the mold-releasing agent, or a failure of a piece of equipment of the device 1 for spraying the mold-releasing agent, based on the measured flow rate.

1 . A device for spraying a mold-releasing agent that sprays a mold-releasing agent on a pattern plate in a molding machine that forms molds from molding sand by using a flask and the pattern plate, the device comprising:
 a nozzle for spraying the mold-releasing agent that sprays the mold-releasing agent on the pattern plate;   a piping for supplying the mold-releasing agent that supplies the mold-releasing agent to the nozzle for spraying the mold-releasing agent;   a flow sensor that measures a flow rate of the mold-releasing agent that flows in the piping for supplying the mold-releasing agent; and   a controller that searches for a leak of the mold-releasing agent, for a clogging of the nozzle for spraying the mold-releasing agent, or for a failure of a piece of equipment of the device for spraying the mold-releasing agent, based on the measured flow rate.   
     
     
         2 . The device for spraying the mold-releasing agent of  claim 1 , further comprising:
 a piping for supplying gas that is configured to supply to the nozzle for spraying the mold-releasing agent gas that is used for spraying the mold-releasing agent; and   a pressure sensor that measures a pressure of the gas that flows in the piping for supplying the gas,   wherein the controller searches for a leak of the gas, for a clogging of the nozzle for spraying the mold-releasing agent, or for a failure of a piece of the equipment of the device for spraying the mold-releasing agent, based on the measured pressure.   
     
     
         3 . The device for spraying the mold-releasing agent of  claim 1  or  2 , further comprising:
 a tank for storing the mold-releasing agent that stores the mold-releasing agent; and 
 a device for supplying pressurized air that supplies pressurized air to the tank for storing the mold-releasing agent, to supply the mold-releasing agent to the nozzle for spraying the mold-releasing agent through the piping for supplying the mold-releasing agent. 
 
     
     
         4 . The device for spraying the mold-releasing agent of  claim 1  or  2 , wherein the controller adjusts a period of time to spray the mold-releasing agent from the nozzle for spraying the mold-releasing agent, based on the measured flow rate. 
     
     
         5 . The device for spraying the mold-releasing agent of  claim 1  or  2 , further comprising a laser sensor that detects the mold-releasing agent that is being sprayed from the nozzle for spraying the mold-releasing agent. 
     
     
         6 . A method for spraying a mold-releasing agent on a pattern plate from a nozzle for spraying the mold-releasing agent in a molding machine that forms molds from molding sand by using a flask and the pattern plate, the method comprising the steps of:
 supplying the mold-releasing agent to the nozzle for spraying the mold-releasing agent;   spraying the mold-releasing agent on the pattern plate from the nozzle for spraying the mold-releasing agent;   measuring a flow rate of the mold-releasing agent that is supplied; and   searching for a leak of the mold-releasing agent, for a clogging of the nozzle for spraying the mold-releasing agent, or for a failure of a piece of equipment for spraying the mold-releasing agent, based on the measured flow rate.   
     
     
         7 . The method for spraying the mold-releasing agent of  claim 6 , further comprising the steps of:
 supplying gas that is used for spraying the mold-releasing agent to the nozzle for spraying the mold-releasing agent;   measuring a pressure of the gas; and   searching for a leak of the gas, for a clogging of the nozzle for spraying the mold-releasing agent, or for a failure of a piece of the equipment, based on the measured pressure.   
     
     
         8 . The method for spraying the mold-releasing agent of  claim 6  or  7 , further comprising the step of adjusting a period of time to spray the mold-releasing agent from the nozzle for spraying the mold-releasing agent, based on the measured flow rate. 
     
     
         9 . The method for spraying the mold-releasing agent of  claim 6  or  7 , wherein, in the step of spraying the mold-releasing agent, the mold-releasing agent is sprayed on the pattern plate from the nozzle for spraying the mold-releasing agent while the nozzle for spraying the mold-releasing agent is moved.