Automatic Welding Machine for Food Packaging

This welding machine consists of machine frame, main driving parts, welding transformer parts, welding parts, copper wire cleaning parts, cleaning parts for copper string drive, copper wire tension parts, copper string flattening parts, copper wire cutting parts, rolling parts, can feeding parts, lift-and-descend parts for can feeding, pressing parts, pulling parts, overlap tool, upper electrode press parts, upper welding arm regulating parts, diameter sizing gauge, pillar parts for diameter sizing gauge, can quitting parts, gas & water pipeline, inverters, electric & pneumatic controller etc.

As the drawing shows，the principle is as follow:
A pair of circumgyrating upper and lower welding rollers press the tinplate, by going through low voltage and high current to create heat and welding points on overlap. During the processing procedures, the copper wire acts as the media electrode, which can prevent polluting the welding rollers from the melting tinplate during process and take away the heat of the welding rollers.                   
Because melt joints between tinplate and copper wire are continuous, the quality of welding line is good and the upper and lower welding rollers do not need to be trimmed in quite a long time. Furthermore in order to make an even touch between copper wire and welded material, the round section copper wire is required to be pressed into flat section copper wire.