The tank liquid weigher achieves online measurement through an electronic weigher. Based on the detection results, the PLC controls the opening and closing of the solenoid valve, uses the separated oil liquid for weight compensation to achieve precise measurement. After the online measurement is completed, there are photoelectric sensors to count the already filled containers. The count is displayed on the operation display panel (touch screen). The conveyor belt then discharges the filled containers and the automatic filling process is completed.

After the filling barrels are placed on the conveyor belt of the conveying mechanism, the conveying motor starts and transports the filling barrels to the filling position. When it reaches the filling position, the proximity switch detects the filling barrel and transmits the sensing signal to the PLC. The PLC controls the conveying motor to stop, and the lifting cylinder starts to rise under the control of the PLC. At the same time, the roller arm structure rises to the maximum position within the cylinder's stroke. The lifting cylinder stops rising, and the synchronous motor starts to operate to drive the roller arm to move. The filling barrel can rotate under the带动 of the roller arm.

Quantitative filling scale can complete two functions: keyboard input and touch control. For the filling equipment of automatic weighing and packaging of liquid materials, it adopts the high-precision all-electronic weight detection method to weigh and measure to control the automatic quantitative filling and filling of raw material buckets.

The feeding scale uses slow feeding valves and fast feeding valves to add raw materials, aiming for high-speed and accurate results. It conducts input weighing, packaging and recording to achieve packaging management of material feeding. By receiving filling information, it converts the work order information into parameters for the automated equipment to execute, driving the equipment to control the filling process in batches according to the work order instructions.

The filling platform adopts fast and slow dual-position filling valves. The filling nozzle is screwed onto the lower end of the valve body, the valve core is fixed at the lower end of the push rod, the push rod is placed inside the valve body and the filling nozzle, and the push rod is fixedly connected to the lower piston of the dual-position stroke cylinder. The upper piston is located above the lower piston. Both the upper and lower pistons can be slidably installed in the inner hole of the cylinder body. The filling is measured and controlled by the electronic scale. The filling valves, filling tanks, filling valves, and the weighing platform of the electronic scale are connected to the PLC system. The filling piston drives the filling head to slowly rise, and when the filling gun piston continues to run to the lower stop point and reaches the target weight, the filling stops.

The weighing filling station starts the fast feed valve and the slow feed valve at the same time to open the liquid into the barrel, when the mass of the measured liquid in the barrel reaches the preset value of the slow feed amount, the fast feed valve will be closed, and the remaining mass will be filled by the slow feed valve, and the slow feed valve will be closed when the set quantitative value is reached. PD(proportion, differentiation) is introduced in each repeat controller channel.

The simulated current signals from the weighing machine are transmitted to the frequency conversion controller. The frequency conversion machine then appropriately processes the current, changes the rotational speed given to the feeding machine from the upper level, and completes the calculation and configuration of the raw materials. The set values are calculated based on the detection data, and input into the electronic weighing machine system through the human-machine interface. The weighing control system of the weighing machine automatically calculates the supply and filling volume of the raw materials based on this detection data and the process target quantity. Then, the PLC control system integrates the supply speeds of each raw material supply system according to the process sequence to precisely and continuously complete the filling of the raw materials.

The explosion-proof weighing platform controls the on-site frequency converter through three methods: proportional setting, quantitative setting and frequency setting during PLC output. The total weight of the filling is tracked and adjusted based on this feeding amount. The frequency converter's continuous discharge range is positioned by the weighing module. A two-stage automatic filling method for different-sized materials is adopted. The height of the filling head can be adjusted manually, and it has the functions of automatically detecting empty barrels and not filling when the scale is empty.

An electronic scale is installed between the lifting base and the support of the injection molding platform. The gear pump control circuit and the electronic scale are all connected to the frequency converter and PLC. The injection gun is driven to perform automatic material dispensing by the cylinder. After weighing, the material is sent to one end of the empty barrel. The weighing system first weighs and then dispenses the material. The weight of the material is converted into pulse equivalent to achieve slow dispensing by pulses. Through dynamic measurement by the electronic scale, the measurement error signal is fed back to the PLC system, and the driving pulse of the dispensing stepper motor can be randomly adjusted to achieve very accurate filling measurement requirements.