Method and apparatus for loosening a jacket

Abstract

A method for loosening a jacket includes the steps of pouring a molten metal into a mold having a jacket attached on its outer surface, while conveying the mold; cooling the mold after pouring while conveying the mold, after the step of pouring; and applying vibration to the jacket after the step of cooling.

1 . A method for loosening a jacket, comprising the steps of:
 pouring a molten metal into a mold having a jacket attached on its outer surface, while conveying the mold;   cooling the mold after pouring while conveying the mold, after the step of pouring; and   applying vibration to the jacket after the step of cooling.   
     
     
         2 . The method according to  claim 1 , wherein, in the step of applying vibration, vibration is applied to the jacket in a vertical direction relative to the jacket. 
     
     
         3 . The method according to  claim 2 , wherein, in the step of applying vibration, vibration is applied to the jacket in the vertical direction relative to the jacket by ascending and descending a supporting part that supports the jacket by a cylinder connected to the supporting part. 
     
     
         4 . The method according to  claim 3 , wherein, in the step of applying vibration, a controller repeatedly sends descending and ascending signals to the cylinder when, after sending an ascending signal to the cylinder, the controller does not receive a detection signal within a predetermined time from a sensor that detects an arrival of the supporting part at a top position by means of the cylinder. 
     
     
         5 . The method according to  claim 1 , further comprising the steps of:
 removing the mold from a position where vibration has been applied to the jacket, after the step of applying vibration; and   detaching the jacket from the mold after the step of removing.   
     
     
         6 . An apparatus for loosening a jacket, comprising:
 a vibrator which is positioned upstream of a detaching apparatus that detaches a jacket from a mold having the jacket attached to its outer surface and having been subjected sequentially to pouring and cooling, and which applies vibration to the jacket before the jacket is detached from the mold by means of the detaching apparatus.   
     
     
         7 . The apparatus according to  claim 6 , wherein the vibrator includes a supporting part that supports the jacket, and a cylinder that ascends and descends the supporting part, and
 a controller which sends, to the cylinder, a signal for vertically reciprocating the cylinder is further provided.   
     
     
         8 . The apparatus according to  claim 7 , further comprising a sensor that detects an arrival of the supporting part at a top position by means of the cylinder,
 wherein the controller repeatedly sends descending and ascending signals to the cylinder when, after sending an ascending signal to the cylinder, the controller does not receive a detection signal from the sensor within a predetermined time.