How should the vacuum packaging machine operate? What is the operating process of the vacuum packaging machine? Let’s take a look with us at Jiaozuo FONFAR
1. Vacuum: the vacuum chamber is closed, the vacuum pump works, the vacuum chamber starts to vacuum, the bag is simultaneously vacuumed, the pointer of the vacuum gauge rises, reaches the rated vacuum (controlled by the time relay ISJ), the vacuum pump stops working and the vacuum stops. While working in vacuum, the two-position three-way solenoid valve IDT works to heat-seal the vacuum of the air chamber, and the hot-press frame remains in place.
2. Heat sealing: IDT is cut off, the outside atmosphere enters the heat sealing air chamber through the upper air inlet, and the heat sealing air chamber is inflated and expanded by using the pressure difference between the vacuum chamber and the heat sealing air chamber to make the upper and lower heat press frame Move and press the bag opening; at the same time, the heat-sealing transformer works to start sealing; at the same time, the time relay 2SJ works, a few seconds later, the heat-sealing ends.
3. Air return: Two-position two-way solenoid valve 2DT is open, the atmosphere enters the vacuum chamber, the pointer of the vacuum gauge returns to zero, the heat press frame is reset by the return spring, and the vacuum chamber is opened.
4. Circulation: move the above vacuum chamber to another vacuum chamber, that is, enter the next working process, the left and right chambers work alternately, cyclically.
