SDB-30A type all-auto folding machine (folding edge machine).This machine was designed specially for these bottle covers which are complicated in design and not easy to interlink bottle due to burglary slice folding toward the internal. The machine sovles the problem of bottle cover’s burglary ring folding toward the internal.
　　The machine possesses the automation functions of putting cover in proper order,delivering cover ,folding and cover disengaging etc.