The power supply voltage structure of liquid packaging machine mainly includes the following parts: winding: winding of power transformer. In the small power transformer of liquid packaging machine, enameled wire is used, which has low price and large duty cycle. Each winding is arranged in layers and wound in layers, and yellow wax silk cloth is sandwiched between the windings for insulation.

The arrangement order of each winding is generally winding the primary coil first, then winding the high voltage coil, and then winding the filament coil. In this way, the high voltage coil is clamped in the middle, which is convenient for insulation and can avoid breakdown with the iron core. The filament coil of vacuum packaging machine and automatic vacuum packaging machine is wound in the outer layer, which is easy for heat dissipation.

Iron core: the power transformer of vacuum packaging machine and stretch film packaging machine adopts shell type iron core. The iron chip is made of a whole piece of silicon steel sheet. After punching, the iron chip should be deburred and annealed to remove stress and improve the magnetic conductivity of the iron chip, which is conducive to reducing iron loss and reducing temperature rise.

Other parts: the basic components of transformer of food packaging machine and vacuum packaging machine are winding and iron core. Other parts include cover, fixing bolt, nut, etc. The shell is used to protect the winding from mechanical damage. The nuts and bolts are used to tighten the iron core to reduce the magnetic resistance and electromagnetic sound.