System for the expulsion of bars or metal ingots from molds, plant for the production of bars or ingots including such system and process for the expulsion of bars or metal ingots from molds

Abstract

A system for the expulsion of bars or metal ingots from the molds in which they are formed and a plant for the production of bars or ingots including such system and to a process for the expulsion of bars or metal ingots from molds are detailed herein.The expulsion system of metal bars or ingots from molds includes a load-bearing structure to which a rotation cradle is rotatably associated adapted to support and hold back at least a mold having at least a body or ingot mold having at least one cavity for the formation of at least one ingot or bar. The rotation cradle is adapted to rotate to cause the expulsion by fall of the bar or ingot contained within the ingot mold. An impact plane or impact surface is arranged below the rotation cradle and adapted to receive the bar or ingot falling from the body.

1 . An expulsion system of metal bars or ingots from molds, said expulsion system comprising: a load-bearing structure to which a rotation cradle is associated adapted to support and hold back a mold comprising a body or an ingot mold having at least one cavity for forming at least one ingot or bar, said rotation cradle being adapted to rotate so as to cause the expulsion by fall of said bar or ingot contained within said ingot mold, an impact plane or an impact surface arranged below said rotation cradle and adapted to receive said bar or ingot falling from said body. 
     
     
         2 . The expulsion system according to  claim 1 , further comprising at least one arm adapted to control the fall of said bar or ingot from said ingot mold. 
     
     
         3 . The expulsion system according to  claim 2 , wherein said arm is arranged to act as a fulcrum for overturning said bar or ingot, i.e. for inducing said arm to perform a rotation of about 360° during its fall. 
     
     
         4 . The expulsion system according to  claim 2 , wherein said arm comprises a first end and a second end and said arm is coupled to said rotation cradle in a movable manner between a first position, in which said arm is disposed completely outside said ingot mold, and a second position, in which said arm is at least partially inserted in said ingot mold with one of the first end and the second ends resting on a perimeter area of the upper surface of said ingot. 
     
     
         5 . The expulsion system according to  claim 4 , wherein said arm is hinged at said first end to said rotation cradle in a movable manner around a hinge axis. 
     
     
         6 . The expulsion system according to  claim 2 , wherein said arm is constituted by an elongated body or bar comprising on said second end a foot or stop. 
     
     
         7 . The expulsion system according to  claim 1 , wherein said expulsion system comprises manipulation means of a lid of said ingot mold. 
     
     
         8 . The expulsion system according to  claim 4 , wherein said rotation of said rotation cradle is controlled by a driving motor and wherein the movement of said arm between said first position and said second position is controlled by an actuator. 
     
     
         9 . The expulsion system according to  claim 1 , said expulsion system comprising one or more impact absorbers interposed between said load-bearing structure and said impact plane and adapted to absorb the impact of said ingot falling on said impact plane. 
     
     
         10 . The expulsion system according to  claim 1 , wherein said plane or impact surface is a surface comprising sand. 
     
     
         11 . A plant for forming metal bars or ingots said plant comprises an expulsion system of bars or ingots according to  claim 1 . 
     
     
         12 . A process for expelling metal bars or ingots from molds the process including the following steps:
 A. providing a mold comprising a body or an ingot mold with at least one molding cavity of at least one ingot closed at the top by a removable lid and containing at least one solidified ingot,   B. removing said lid from the mold or said ingot mold;   C. rotating said ingot mold at an angle greater than 90° to cause expulsion by fall of said ingot contained thereof, and   D. collecting said ingot on an impact plane or surface.   
     
     
         13 . The process according to  claim 12 , the process comprises between said phase B and said phase C a phase of blocking a perimeter portion of said ingot, by partially inserting an arm into said ingot mold for controlling the fall of said ingot, wherein said arm has an end thereof suitable for resting on a perimeter area of the upper surface of said ingot. 
     
     
         14 . The process according to  claim 12 , the process further comprises step E of moving said ingot away from said impact plane towards a subsequent treatment station.