The weighing and unLoading machine is an automatic weighing device that continuously and accurately measures the weight of materials on the weighing module platform. It is mainly composed of flexible connections, metering hoppers, weighing platforms, weighing sensors, stirring devices, servo drive motors, feeding screws, single-chip microcomputer control systems, etc. The metering hopper and the entire feeding mechanism are used as a scale body for weighing. As the material flows out of the unloading scale, the control system collects the weight signal of the scale body at high speed and high frequency to obtain the weight reduction of the material in the metering hopper per unit time. Then, through specific filtering and optimization processing, the actual flow rate of the unloading scale is obtained. Meanwhile, the control system will compare this feeding speed with the preset given speed, calculate the comparison result and feed it back to the feeding mechanism of the unloading scale to automatically correct the feeding speed of the feeding mechanism, forming a closed-loop control, thereby making the actual flow rate infinitely approach the given flow rate and meet the control requirements.

The weighing and unloading machine can not only complete the configuration and debugging of the Weighing system, the online correction of detection parameters and the setting of control parameters, but also realize the collection of production data, the generation and printing of reports, the alarm of abnormal signals and the online release of production site information and other functions. Each weighing module signal is directly transmitted to the corresponding weighing controller by the industrial control computer, PLC computer control system, feeding control device, etc. Through the serial port or Modbus protocol, the weighing controller transmits the weight signal to the computer. The computer controls the final control valve of each raw material bin according to the batching weighing and adds the required raw material weight. According to the requirements of the ingredient composition, control the weighing and unloading machine in sequence to carry out the ingredient mixing. The material is added to the weighing hopper through the Feeder from the material trough. When the weight value required for ingredient mixing is reached, stop feeding. After all the materials required for batching have been weighed one after another, the weighing hopper is placed at the feeding port of the mixing equipment, and the prepared materials are discharged into the mixer for blending.