The semi-automatic filling line integrates formula management, filling and weighing, personnel management, report generation, providing interface and data management to solve the data communication between computer and electronic scale. The filling site electronic scale is connected to the serial port of the computer host in the office, and the keypad in the filling site is connected to the computer in the office with a keyboard adapter.

The metering filling line is composed of conveyor belt, transmission gear, conveyor belt, conveying motor and lifting cylinder. The filling device is composed of a filling gun, a filling barrel, a synchronous motor, a rodless cylinder and a roller arm. The suction capping device comprises a suction capping device; The electronic weighing device is composed of photoelectric weighing module, proximity switch and weighing module.

Liquid canning machine adopts configuration software to monitor the interface design, can quickly component and generate the upper computer monitoring system, through the screen real-time display of the current filling quality, filling barrels and other field work status, the upper computer can carry out the corresponding operation, through the interface for the choice of filling mode and start, stop and other buttons operation. It can change the filling quality and number of barrels and manually remove the tare weight (i.e., the quality of the filling barrels) when using different filling barrels.

In order to realize the above monitoring requirements, the automatic canning machine adopts Haniwa effect and fast flow attribute setting in the monitoring interface design to simulate the dynamic filling process, and realizes manual/automatic selection, starting, stopping, emergency stopping and manually opening the pump solenoid valve by adding the standard buttons, and realizes real-time display of the filling quality setting, the number of bottles to be filled, and the display of the number of barrels to be filled, etc. through the setting of display and output attributes of the labels. The configuration monitoring screen completes the monitoring of the operation status of the filling system.

In addition to meeting the performance indicators required by the weighing instrument, the selection of weighing sensors should try to use sensors with consistent output sensitivity and input impedance, and connect them correctly in the wiring compensation box. The wiring compensation box should be installed near the weighing instrument in the metering room, and multiple sensors should be output in parallel, usually using a bridge power supply. When the sensitivity of sensors is compensated, the actual bridge supply voltage is set among multiple sensors, and the sensitivity of the first sensor is the smallest, so the bridge supply voltage is in a given range.

The Cylinder weighing and mixing machine is inputted into PLC through 16-bit high precision A/D converter module, and PLC automatically controls the whole batching and weighing process, data processing and alarm output of the weighing system through programming. The data parameters and operation of dosage are directly controlled by touch screen interface. The weighing system is connected to the computer through a 485 communication module to form a network, and the computer monitors the system and processes the data.

Weighing and batching machine consists of big storage bin, bag filter, induced draft fan, balance valve, screw feeding device, storage hopper, etc. Powder sent by conveying system is sent to different big storage bins for storage according to models. When conveying the powder, the induced draft fan will automatically open and control the powder flying through the bag filter, the balance valve will automatically open to balance the pressure in the big storage bin, the screw feeding device at the bottom of the big storage bin will send the powder to the storage hopper to wait for further conveying to the weighing system, the balance valve will be automatically closed after the conveying is finished.

The nonlinear error characteristics of weighing module, the adaptive subsection compensation method of nonlinear error, in the upper limit of rated range, the compensation network based on radial basis function neural network is used to complete the nonlinear error compensation of sensor; In the lower limit region, a digital filter is used to complete the nonlinear error compensation. In the middle area, the weighing sensor does not compensate, and at the same time, the adaptive selection network is used to complete the selection of subsection compensation.

The connection of the weighing module determines the accuracy and stability of the weighing result. The Wheatstone bridge of the weighing sensor is formed by sticking the resistance strain gauge on the elastic body. When the elastic sensitive element does not bear the load, the resistance of the strain gauge remains unchanged, the bridge is balanced and the output voltage is zero. On the contrary, the resistance of the strain gauge changes, the bridge loses balance, and the weighing sensor outputs a voltage signal proportional to the weight of the measured load.