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Vacuum: When the lid of the vacuum chamber of the stretch film vacuum packaging machine is closed, the vacuum pump starts to work, and the vacuum chamber begins to draw a vacuum, simultaneously vacuumizing the packaging bag. The vacuum gauge pointer rises until the rated vacuum degree is reached (controlled by the time relay ISJ). The vacuum pump stops working, and the vacuum stops. While vacuuming, the two-position three-way solenoid valve IDT works, creating a vacuum in the heat sealing gas chamber, and keeping the hot press frame in place.
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Sealing: The IDT is turned off, and the outside air enters the heat sealing gas chamber through its upper air inlet. Using the pressure difference between the vacuum chamber of the stretch film vacuum packaging machine and the heat sealing gas chamber, the heat sealing gas chamber inflates and expands, causing the upper hot press frame to move downward, pressing the bag mouth; at the same time, the heat sealing transformer starts to work, and the sealing begins. Meanwhile, the time relay 2SJ starts working, and after a few seconds, it acts, completing the sealing.
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Backflow: The two-position two-way solenoid valve 2DT is turned on, allowing the outside air to enter the vacuum chamber. The vacuum gauge pointer returns to zero, and the hot press frame is reset by the reset spring, opening the vacuum chamber lid.
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Cycle: Move the above vacuum chamber to another vacuum chamber, and enter the next working process. The left and right chambers alternate work, cycling back and forth.
The fully automatic stretch film packaging machine uses the first-generation PLC control, touch screen operation, German BUSCH vacuum pump, and SIEMENS SIEMENS components. It is uniquely designed, fully functional, stable and reliable in performance, widely applicable, high in packaging efficiency, and can effectively prevent the oxidation of lipids and the reproduction of aerobic bacteria, which can cause item spoilage and deterioration, thus achieving the effects of quality preservation, freshness preservation, flavor preservation, and color preservation, and facilitating the extension of storage. This stretch film packaging machine is currently an ideal alternative to similar foreign products for vacuum packaging equipment.
The fully automatic stretch film vacuum packaging machine has easy and accurate adjustment of the upper and lower molds. The upper and lower cutting knives have a long service life. Imported electrical control stepping has high accuracy, no cumulative error, and more time-saving and labor-saving operation, without material waste.
The packaged items enter from one end and exit from the other, facilitating the formation of a assembly line. The appearance of the packaged items is beautiful, and the display effect on the shelf is good. Due to the two vacuum extractions, and between the two vacuum extractions, there is a device for flushing with oxygen-free gas, which can further improve the deoxidation effect, extend the storage period, and improve the packaging quality.
Post time: Mar-16-2024