Controlling curtain opening system in continuous furnaces

Abstract

This invention is directed to a controlling curtain opening system in a continuous furnace which comprises a laser photo cell eye system situated in front of the curtain box. The laser photo cell eye system comprises a plurality of laser beams to monitor and adjust to the height of a moving products passing therethrough.

1 . A controlling curtain opening system in a continuous furnace which comprises a light-photo cell eye system positioned in front of a curtain box, a series of light beams casting across the light-photo cell eye system therethrough, which measures the dimension of a metal object passing across the series of light beams. 
   
   
       2 . The controlling curtain opening system of  claim 1  wherein the light-photo cell eye system comprises a source of light on one and a photo-electric cell on the other side therethrough. 
   
   
       3 . The controlling curtain opening system of  claim 1  wherein the light-photo cell eye system comprises a plurality of light beams to monitor and adjust to the height of a moving products passing therethrough. 
   
   
       4 . The controlling curtain opening system of  claim 3  wherein a signal processor processes signals from the light beams that passes the metal objects. 
   
   
       5 . The controlling curtain opening system of  claim 3  wherein the light-photo cell eye system adjusts the opening of curtains in the curtain box by a electro-mechanical system. 
   
   
       6 . The controlling curtain opening system of  claim 5  wherein the electro-mechanical system comprises an electrical servo-motor and gear system or screw system. 
   
   
       7 . The controlling curtain opening system of  claim 1  wherein the light beams are laser beams. 
   
   
       8 . A method of controlling the curtain in a continuous furnace, the method comprises
 a) positioning a light-photo cell eye system in front of a curtain box, in which a series of light beams casts across the light-photo cell eye system therethrough,   b) measuring the dimension of a metal substance passing across the series of light beams, and   c) adjusting the opening of the curtain using the measurements from the dimension of the metal substance.   
   
   
       9 . The method of  claim 8  which comprises passing a light source from one side of the light-photo cell eye system to photo-electric cell on the other side of the light-photo cell eye system. 
   
   
       10 . The method of  claim 8  which comprises passing a plurality of light beams to monitor and adjust to the height of a moving products passing therethrough. 
   
   
       11 . The method of  claim 8  which further comprises passing signals resulting from the passing a plurality of light beams to monitor and adjust to the height of a moving products passing the light-photo cell eye system to a signal processor. 
   
   
       12 . The method of  claim 8  which further comprises adjusting the opening of curtains in the curtain box by an electro-mechanical system triggered from the signal processor. 
   
   
       13 . The method of  claim 12  wherein the electro-mechanical system comprises an electrical servo-motor and gear system or screw system. 
   
   
       14 . The method of  claim 8  wherein the light beams are laser beams.