company news about Twin-screw large bag packaging machine: The core principle of efficient and precise packaging

The working principle of the twin-screw large bag packaging machine revolves around three key elements: stable feeding, precise measurement, and safe bag sealing. Through coordinated mechanical structures and intelligent control systems, the automated packaging of ton-level large bags is achieved.

1. Core structure: The twin-screw conveying system is the key

The core of the twin-screw large bag packaging machine lies in the twin-screw conveying mechanism, which consists of two parallel meshing screws, a roller and a drive motor. Compared with single-screw machines, the counter-rotating screws of twin-screw machines can effectively prevent material bridging (caking and clogging). This makes it particularly suitable for powdered or granular materials that are prone to moisture absorption and have poor fluidity, such as flour, cement, and compound fertilizers.

2. Workflow: Four-step automated packaging

• Bagging and positioning: The operator places a bag on the outlet of the twin-screw large bag packaging machine. After the twin-screw large bag packaging machine starts, the bag clamping mechanism automatically clamps the bag opening to ensure no material leakage during the packaging process. Meanwhile, the weighing system resets to zero and enters the measurement state.

• Twin-screw feeding: The control system activates the twin-screw drive motor based on the preset packaging weight. After the material enters the barrel from the hopper, the two screws rotate synchronously, continuously and evenly pushing the material towards the discharge port, eliminating the measurement error caused by uneven feeding.

• Precision metering speed regulation: When the pressure-measuring element detects that the material weight is close to the preset value, the control system automatically reduces the screw speed and enters the "fine feeding" mode to reduce the error caused by material impact. Once the weight reaches the preset value, the screw stops and the feeding process is completed.

• Bag sealing and unloading: After the feeding is completed, the bag clamp is released and the bag is conveyed to the bag sealing station by the conveyor (heat sealing or rope sealing depending on the material characteristics). After sealing, the packaging bags are transported to the storage area by forklifts.

3. The technical advantages adapt to various scenarios

In the building materials industry, twin-screw large-bag packaging machines can handle materials prone to dust such as cement and lime powder. When used in combination with dust removal systems, they can achieve environmentally friendly packaging. In the grain industry, twin-screw large-bag packaging machines can precisely package granular materials such as corn and wheat to prevent breakage.

In the video,it is user guide of our twin-screw large-bag packaging machine.