The automatic batching system is based on the electronic weighing system which is composed of the original weighing module and weighing instrument, and completes the automatic control of the whole process of batching conveying and mixing from the exit of the bin to the exit of the mixer by means of fieldbus communication and the existing peripheral executive equipment. The dosing system displays and monitors the alarm prompts and interlocks of the whole system, and completes the man-machine dialogue of formula management, production data management, equipment operation status management and production command to meet the mixing requirements of production.
020-34563445The feeding system adopts the master-slave structure. Industrial control machine as the upper host, Siemens PLC, frequency converter and weighing instrument as the lower slave. The host is in the dominant position to realize the communication management and control of the slaves. The RS-232 asynchronous communication port of the ICP is connected to the PLC after level conversion to form a physical channel for the communication between the upper and lower units; another RS-232 port of the host is connected to the communication port of the weighing instrument to form the second physical channel. The upper computer adopts polling method to communicate with the slaves one by one. The upper computer transmits the result of task planning to PLC. During the control process of PLC, the upper computer uses the upper computer connection command to monitor the operation status and data area content of the lower computer, reads the internal status of PLC and the real-time data of weighing instrument in real time, and displays them on the upper computer.
The automatic Batching system is composed of industrial control machine, PLC, industrial weighing instrument, frequency converter, vibration motor, mixer, weighing module, conveyor belt and other parts. The upper computer provides human-computer interaction interface, completes the functions of controlling information input, data management, data display, storage, statistics and report, etc. The upper computer adopts IPC810 industrial computer, and the main work is as follows: the industrial control host firstly reads a certain numbered formula according to the operator's instruction, and then sends out the instruction to PLC to start the batching according to the proportion of the ingredients in the formula and the sequence of the ingredients, which enables the PLC to start the specific frequency converter. PLC can start the specific frequency converter. In the process of batching, the industrial control host reads the status words of PLC in real time by polling to understand the operation status of PLC and PLC subordinate equipment; on the other hand, it reads the weighing data of the weighing instrument installed on the batching machine in real time, and according to the batching strategy, the host sends a command to PLC to stop the batching when the weighing is close to the set value in the formula. When all the materials on a recipe are finished, the whole dosage process is suspended, waiting for the operator's instruction.
The feeding system has the following functions:
①Full-automatic dosage, after setting the formula, it will automatically weigh and dosage according to the formula without operator's intervention;
②With report function, it can produce daily report, real-time report and monthly and yearly report;
③Dynamic increase and modification of reports, the system gives technicians or operators the right to modify and increase the formula by setting the authority, and at the same time records the date and operator number of the modification;
④Power failure recovery function, the system is able to recover the measurement records before power failure in case of sudden power failure;
⑤LAN sharing function, the host computer can share the data in the LAN, which is convenient for the workshop supervisor to know the progress of the project and other situations.
