The automatic paint Filling machine adopts a high-precision all-electronic weight detection method for weighing and measurement to control the filling and filling operations of the barrel-packed raw materials. It is programmed using a PLC programmable controller. To ensure the accuracy and reliability of the actions of each part of the filling process, the PLC program is used to control the Electronic scale, relays, switches and solenoid valves. Using the SCADA filling platform, the secondary development of the automatic filling machine functions is carried out on this platform to achieve intelligent filling process management control. Different from traditional information management, the functions revolve around highly automated equipment such as automatic filling, establishing software that serves the control of the automated process. Using PLC recognition technology, printing technology, automatic control technology and information technology, intelligent automatic filling is formed to meet customers' requirements for the automation, informatization and intelligence of the filling process. 

The quantitative filling machine calculates the filling and loading volume based on the weight of the container, and uses the weight measured by the electronic scale as the set quantity for filling. Each phase forms a closed loop independently. By adjusting the opening degree of the filling gun regulating valve of each phase, the output quantity of each phase is stabilized at the set value, thereby ensuring the quantitative filling. For flow control, the control output (the control signal of the filling gun valve) of the PLC is limited to change within a certain range. Through on-site data exchange and communication functions, the level detection element and pressure detection element transmit the detected level and pressure signals to the PLC. The action of the buttons can also transmit signals such as the start, stop, overload and fault of the motor to the PLC. The PLC outputs relevant signals such as the start, stop of the motor, overload alarm, fault alarm, opening and closing of the solenoid valve according to the corresponding program. 

The automatic filling machine adopts fully automatic bucket sorting and taking equipment, with multi-head accurate filling. The control box panel is equipped with "start", "stop" and "reset" buttons, and there is a "status indicator light" for display. It shows real-time instantaneous flow rate, cumulative quantity, total percentage, etc. It can record the production capacity and operation status of the filling line, assisting managers in improving and enhancing the filling performance and process operation. It is composed of a feeding hopper, electronic scale, frequency converter, rotor pump and frequency motor. The motor speed is controlled by changing the input of the frequency converter. A larger given current means a faster motor speed, and the motor takes more material, resulting in a faster discharging speed; conversely, a slower speed means less material taken by the motor, and the discharging speed is slower. The discharging flow rate has a non-linear filling relationship with the input current sent to the frequency converter. During system operation, the electronic scale below the container transmits the collected weighing signal to the PLC controller. The controller calculates the flow rate based on the difference between the two weighing signals, and the control of the discharging flow rate is achieved by comparing the set value and calculated value of the flow rate in real time.