Single-component rice weighing and extrusion control system

Working principle

The single-component metering and extrusion control system can manage up to seven master screws.

The single‑component, metered‑weight automatic weighing and extrusion control system comprises a material‑suction system, a material‑storage system, a weighing system, and a host‑computer system. During operation, raw material is continuously fed from the weighing hopper to the screw via an automated feeding mechanism. The host computer calculates real‑time production output by acquiring the weight‑loss signal from a high‑precision load cell mounted beneath the weighing hopper. Simultaneously, through communication with the screw‑drive unit, the host adjusts the extrusion rates of each stage of the screw to achieve precise control over total output and layer‑ratio distribution. Additionally, by integrating signals such as traction speed, web width, and raw‑material density, the host computer regulates film thickness.

The system features data storage, data query, data export, recipe management, and remote services.

Technical Specifications

Advantages

Control total output The system acquires, at high speed, the weight‑loss signals from a high‑precision load cell mounted at the bottom of the weighing hopper, thereby calculating and measuring the current extrusion output. After the user sets the target total output, the system automatically adjusts the extrusion rates of the screw drives on each stage, ensuring that the actual output matches the user‑defined target with a control accuracy of up to 0.3%.

Control the layer-by-layer ratio. By independently setting the total production output and the percentage ratio for each layer, the control system automatically adjusts the extrusion rate of each layer’s screw drive unit according to these ratios, achieving a control accuracy of up to 0.3%.

Control of film thickness (thickness / basis weight) The system calculates the actual traction speed by acquiring encoder signals, compares it with the set traction speed (thickness), and incorporates additional inputs such as web width and raw material density. The host computer then precisely controls the speed of the traction inverter to ensure that the set thickness matches the actual thickness, thereby guaranteeing that the extruded product’s thickness and linear weight meet the customer’s specified requirements, with a control accuracy of up to 0.2%.

Good compatibility : The single-component micro‑weighing automatic weighing and extrusion control system can be freely combined with our company’s dual- and multi-component micro‑weighing automatic weighing and extrusion control systems, achieving a control accuracy of up to 0.3%.

High-precision color masterbatch machine functions : The dual-component masterbatch (minor ingredient) dosing system employs a gravimetric high-precision sensor for weighing, with a stepper motor precisely regulating the screw extrusion rate, achieving a control accuracy of 0.3%. This delivers significantly more stable and reliable performance compared to conventional masterbatch machines.