A magnetic coupling for packagine machine

The application discloses a magnetic coupling for packagine machine, wherein, N magnetic pole and S magnetic pole are installed on the first and second shaft coupling semi -axiss in turn, and the first and second shaft coupling semi -axis relative position's magnetic pole magnetism is opposite simultaneously. First, two form advance that processing has double -layered paper roll on the roller, one end processing simultaneously has the helical gear to be used for the meshing. The first roller of form advancing passes through key and shaft coupling leg joint, and first shaft coupling semi -axis is installed on the shaft coupling support, and second shaft coupling semi -axis is fixed with first gear, and first and the 2nd gear engagement, merchant label carry power to carry extremely first form advance roller and the second roller of form advancing through the second gear. It is overcome G. DX500 packagine machine merchant label door existing machinery formula shaft coupling effectively and frequently throws off