In the process of feeding the double sheet material to solve, appear "5 pieces of iron " overlap, in the printing machine roller, the machine is stuck, require time-consuming and laborious out these " scrap "? Punch die value of up to tens of thousands to tens of thousands, of two or more cover together punch, mold damage caused huge losses, sometimes to two cans of iron overlap welding into a tank body, it is a waste? Resistance welding wire and a but burned out, but also to adjust the tightness of the material, such costs and fees, artificial power?
     
      You originally with double detector is sometimes a single iron, double Tiehui error detection of action? When more than 3 pieces of iron overlap, your original double controller can not be detected? No prevention of double sheet detection, " double sheet iron " overlap into the oven drying, whether two became scrap?