The structure and principle of the counting machine
Electronic counting machines are divided into single channel, dual channel, and multi-channel types. Each channel is generally composed of 8 sets of photoelectric switches, and each can of medicine is completed by one channel. Therefore, in order to increase production, machines can be developed into single head or multi head models, but the principle is the same, consisting of the following parts: electromagnetic vibration feeding device, pneumatic door closing device, automatic counting system, centralized monitoring and sorting system.
Feeding device
After the system automatically starts working, it first uses photoelectric detection to determine whether the position of the pre installed bottle is correct. After all signals are correct, the vibration feeding system will automatically start upon receiving the start signal. The vibration system is divided into three levels: the first level is vibration discharge, the second level is slow feeding, and the third level is channel feeding and material packaging. After three levels of adjustment, it aims to achieve uniform feeding, accurate counting of particles, and strong adaptability.
Automatic counting and door closing system
When the pills fall through several photoelectric switches, the automatic counting system will send a signal to the sorting system (PLC), and then the PLC will control the rapid action of the cylinder according to the user's set canning quantity to achieve real-time closing of the door, in order to achieve precise canning and improve the stability and accuracy of the system.
Centralized monitoring and sorting system
All parameters and operating conditions of the counting machine will be monitored through the monitoring system - Delta human-machine interface to check its working status, including cylinder action time and whether the automatic counting system is normal or not, which will be clear at a glance.
The advantages of Delta PLC and human-machine application in digital equipment
The system has high requirements for PLC, requiring PCL to have 100 1ms timers, fast program timeliness, short scanning cycle, stable control, and high price advantage. In response to these characteristics, we have adopted the high-performance EH series programmable controller (DVP64EH00T) carefully developed by Delta Electronics.
The controller has dual communication ports, which can facilitate programming and monitoring; At the same time, there are 100 1ms timers (* among similar products), which can measure the number of pieces more accurately and quickly. Moreover, the scanning cycle of the entire PLC is very short, making it a superior product among products with the same function. The monitoring interface adopts Delta's multi communication port intelligent human-machine touch screen (DOPA57GSTD), which has won customers more deeply with its powerful communication function. The powerful macro command function of the free communication port solves the problems that the industry has always been unable to solve. Through this function, regardless of the size or thickness of the pills, as long as a light source calibration is performed in the human-machine interface, the system will automatically record and store the optimal parameters on the screen. After adopting Delta's complete set of products for the core control system, the overall cost-effectiveness of the multi chip machine is superior to European and American products, as well as Japanese equivalent brands.