The automatic filling machine utilizes the characteristics of high accuracy of electronic scale measurement, connects the electronic scale signal sensor with the weighing control instrument by data line, the pressure signal of the electronic scale is continuously transmitted to the weighing instrument during the measurement process, and the weighing indicator controls the stopping of the pump and the closing of the pneumatic valves when the preset dosing weight is reached. Adopt programmable controller to realize automatic mixing of two kinds of liquids, different action control outputs for different states, and realize the cyclic control of AB two kinds of liquid mixing (including single cycle). Adopting modularized structure, it is composed of master-slave industrial control machine. The master-slave industrial control machine is connected to each slave machine (including the virtual host) through the serial bus (called Bus I), and the virtual host is also connected to other slaves through the serial bus (called Master U), forming a dual-bus structure. The host computer controls the automatic filling machine through the serial president 1, and the virtual master controls the filling through the serial bus 2 after the acquired control right.

Weighing and filling machine mainly consists of spray gun device, system controller, full electronic scale, mechanical structure parts, conveying roller conveyor, etc. The structure is compact and reasonable, stable and reliable, easy to install and operate, and it can be adjusted accordingly for various sites and production capacity to meet the requirements of users. Adopting configuration software for monitoring interface design, it can quickly build up the components and generate the upper computer monitoring system, through the data collection and processing of the scene, with animation display, alarm processing, process control. Real-time curve, historical curve and report output and other ways. Monitoring system through the screen real-time display of the current filling quality, filling the number of barrels and other field work status, in the host computer can carry out the corresponding operation, through the interface for the filling mode selection and start, stop and other buttons operation. It is possible to change the filling quality, the number of barrels and manually remove the tare weight (i.e. the quality of the filling barrels) when using different filling barrels.

The weighing and filling system includes report function, data storage and record function, tabulation and printing function, each time the production is completed, it automatically prints the dosage report and records the date, time, report number and the actual consumption of each material; the report is stored in the hard disk of the computer, which ensures the correctness and completeness of the production report and it can be read at any time; it adopts the method of filling on the liquid surface, which is suitable for filling many kinds of non-foamy liquid materials. Liquid Filling Machine Liquid filling machine adopts Siemens S7-200CPU226cnDC/DC/DC PLC as the core control, and at the same time, extends EM235 analog module for weight collection, and the upper computer adopts integrated embedded TPC1061Ti touch screen to realize the functions of status display, set value input and operation process monitoring. Weighing and quantitative method is adopted to realize the quantitative filling of liquid by collecting data from weighing module.

The automatic filling machine adopts CS structure, and the control management server manages the whole filling machine as the filling center server. The operating stations of each process are connected through the industrial Ethernet as the network. One operating station is placed in each process and connected to the equipment of each process. The functions of each station are realized through the operating station.

In order to realize the above monitoring requirements, the monitoring interface simulates the dynamic filling process by adopting Haniwa effect and fast flow attribute settings; it realizes manual/automatic selection, starting, stopping, emergency stopping and manual opening of pumps and solenoid valves by adding standard buttons; and it realizes the real-time display of the filling quality settings, the setting of the number of barrels and the display of the number of barrels by setting up the display and output attributes of the labels, and so on. The monitoring screen monitors the operation status of the filling system, realizes the purpose of monitoring PLC operation by operating on the touch screen, establishes the connection between the system and the external hardware equipment, enables MCGS to read data from the external equipment and control the working status of the external equipment, and realizes the real-time monitoring of the filling process. Configure the device components in the device window as S7-200 as the monitored device components, set "Universal Serial Parent Device 0" as "Universal Serial Device", set "Sub Device 0" as "Siemens S7-200", set "S7-200" as "Siemens S7-200", and set "Sub Device 0" as "Siemens S7-200". "Siemens S7200PPI"; Secondly, the graphic objects in the operation screen must be linked to the programming software in the PLC, this can be done by defining the real-time database in the MCGS, and then through the channel connection in the device window, provide the real-time database with the channel connection of the data variables collected from the external devices.