China DB Series Ton Bags Packing Machine for Flour & Powder Materials – Trusted Suppliers & Factory

First, empty ton bags are sleeved onto the filling port by manual operation or an automatic bag-feeding mechanism. The equipment clamps the ton bags from the four corners or the edge of the bag mouth through a pneumatic bag-clamping device, ensuring the bag is stable and tightly sealed with the filling port to prevent material leakage or bag displacement during filling. Meanwhile, the bottom of the ton bag is placed on a tray supported by weighing sensors, preparing for subsequent weight monitoring.

According to the characteristics of materials (such as dry-mixed mortar, ore powder, etc.), the equipment uses a screw conveyor or belt conveyor to transport materials from the storage bin to the filling channel. In the initial stage, the control system activates the high-speed conveying mode, where the screw or belt operates at maximum speed to quickly inject materials into the ton bag. This stage completes most of the target weight, significantly shortening filling time and meeting the efficiency requirements of heavy-weight packaging.

When the weighing sensor detects that the material weight in the ton bag is close to the preset value, the control system automatically switches to the "low-speed supplementary filling" mode - the conveying equipment operates at a reduced speed to decrease the amount of material conveyed per unit time. At the same time, the weighing system collects weight data in real time and feeds it back to the control center to dynamically adjust the supplementary filling speed. When the weight reaches the preset value, the conveying equipment stops immediately, and the residual materials in the filling channel are cleared by a small vibration device to ensure weighing accuracy.

After filling is completed, the pneumatic bag-clamping device is released, and the ton bag moves to the unloading station along with the tray (some equipment is equipped with an automatic conveyor belt). Subsequently, the bag mouth of the ton bag is sealed by heat sealing or rope binding through manual operation or an automatic sealing mechanism to prevent materials from getting damp or scattered, ultimately completing the entire packaging process.