Feeding sensor of quantitative control for die caster

Abstract

A feeding sensor for die caster comprises a storage tank storing molten metal, a positioning member atop the storage tank, a feeding pipe connected to the positioning member and having one end passing through an opening of the storage tank and placed below a surface of the molten metal. A container of fixed volume is connected to another end of the feeding pipe and has a control valve and an air pump. A columnar supporting post has one end connected to the feeding pipe and another end connected to a weight sensor.

I claim  
     
         1 . A feeding sensor of quantitative control for die caster, comprising a storage tank used to store a molten metal and having an opening atop a top side thereof; 
 a feeding pipe having one end passing through the opening of the storage tank and placed below a surface of the molten metal;    a container of fixed volume, the container being connected to another end of the feeding pipe and having a control valve and an air pump, the air pump draining air out of the container whereby the molten metal flows into the container through the feeding pipe;    a columnar supporting post having one end connected to the feeding pipe; and    a weight sensor connected to another end of the columnar supporting post and being assigned with a net weight including the desired amount of the molten metal;    when the columnar supporting post is in contact with the weight sensor and the weight sensor measuring a weight equal to the assigned net weight, the air pump begins to draw air into the container, thus guiding the molten metal out of the container.    
     
     
         2 . The feeding sensor of quantitative control for die caster as in  claim 1 , wherein a positioning member is provided atop the storage tank and the feeding pipe is connected to the positioning member.  
     
     
         3 . The feeding sensor of quantitative control for die caster as in  claim 2 , wherein the positioning member is a movable shaft.  
     
     
         4 . The feeding sensor of quantitative control for die caster as in  claim 1 , wherein the weight sensor is a weight scale.  
     
     
         5 . The feeding sensor of quantitative control for die caster as in  claim 1 , wherein the air pump is controlled by the weight sensor to drain or draw air.  
     
     
         6 . A feeding sensor of quantitative control for die caster, comprising 
 a storage tank used to store a molten metal and having an opening atop a top side thereof;    a feeding pipe having one end passing through the opening of the storage tank and placed below a surface of the molten metal;    a container of fixed volume, the container being connected to another end of the feeding pipe and having a control valve and an air pump, the air pump draining air out of the container whereby the molten metal flows into the container through the feeding pipe;    a columnar supporting post having one end connected to the container; and    a weight sensor connected to another end of the columnar supporting post and being assigned with a net weight including a desired amount of the molten metal;    when the columnar supporting post is in contact with the weight sensor and the weight sensor measuring a weight equal to the assigned net weight, the air pump begins to draw air into the container, thus guiding the molten metal out of the container.    
     
     
         7 . The feeding sensor of quantitative control for die caster as in  claim 6 , wherein a positioning member is provided atop the storage tank and the feeding pipe is connected to the positioning member.  
     
     
         8 . The feeding sensor of quantitative control for die caster as in  claim 7 , wherein the positioning member is a movable shaft.  
     
     
         9 . The feeding sensor of quantitative control for die caster as in  claim 6 , wherein the weight sensor is a weight scale.  
     
     
         10 . The feeding sensor of quantitative control for die caster as in  claim 6 , wherein the air pump is controlled by the weight sensor to drain or draw air.