The quantitative filling oil product Filling machine adopts two identical online weighing processes. The first one is to grasp and weigh the containers before filling on the conveying mechanism, then place them back. The second one is to grasp and weigh the filled containers, then place them back. After the online Weighing system calculates and analyzes, the filling error is fed back to the filling mechanism for online adjustment of the filling volume. When the position detection device before filling detects the arrival detection signal of the container, the conveyor belt stops, and the motor of the main shaft lifting mechanism rotates the container to the position where the main shaft drops to the bottom, then the container gripper clamps the container before filling and raises it to the bottom. The conveyor belt starts, the rotating main shaft of the container lifts the container before filling to the Electronic scale platform. The rotating main shaft of the container drops to the bottom, the container gripper releases the container, and the container is placed at the correct position. Then, the quality is tested and the input signal of the measured actual quality of the container before filling is output. Next, the container gripper clamps the container before filling, the main shaft rotating of the container lifts to the bottom, rotates, and transfers the container before filling to the conveyor belt. The conveyor belt stops, the main shaft rotating of the container drops to the bottom, the container gripper releases the container, and the main shaft of the container rises. The conveyor belt starts, and a quality detection action for the container before filling is completed, and this process repeats. 

The automatic filling machine is connected to the weighing control instrument via data cables. During the weighing process, the pressure signal from the electronic scale is continuously transmitted to the control instrument. When the preset quantity is reached, the control instrument controls the pump to stop. It features quantitative control, data printing, and electronic scale measurement functions, and is widely applicable for medium-capacity filling of various liquids with different viscosities. According to the proportion and sequence of filling volume, it sends a start filling instruction to the PLC, enabling the PLC to activate the specific frequency converter. The Filling system can display information such as target volume, filling volume, bucket number, time, and date. The upper-level industrial control computer provides a human-machine interaction interface to complete functions such as control information input, data management, data display, storage, statistics, and report generation. 

The quantitative filling machine automatically weighs various materials according to the preset filling scheme and controls each stage of the filling process automatically to complete the filling operation. The key to accurate filling is to control the rotational speed and start/stop of the filling motor. During the filling process, the rotational speed of the motor is controlled according to the amount of filling, and different filling modes such as high-speed filling and low-speed filling are divided. When the actual filling deviates significantly from the set value, the high-speed filling mode is adopted. When the filled amount is close to the set value, the low-speed filling mode is adopted. Due to the remaining materials in the air space between the filling port and the filling gun, the leakage cup automatically flows the remaining materials into the storage pipeline to achieve the control of the advance amount. When the actual filling process reaches the control advance amount, the filling gun stops filling. When the actual filling process reaches the control advance amount, due to the difference in material density, the quality of the remaining materials in the air space after the motor stops rotating varies. Based on the actual operating conditions, the advance amount for the motor to stop is set. The end time of feeding is determined according to the drop compensation coefficient of each material. After the weighing container stabilizes, the final weight of the materials in the container is read and compared with the set value, which is used as the basis for selecting the drop compensation coefficient for the next filling adjustment. That is, the current filling uses the average of the measured drop value and the drop compensation value of the previous filling for drop compensation. This method can improve the filling accuracy of the filling system as the filling times increase.