Introduction

In recent years, as people's consumption level continues to improve, the rapid development of industry, filling beverages are highly favored by the people, people's demand for filling beverages increased, prompting the rapid renewal of equipment, filling production line equipment came into being. Some of the production of beverages, oral liquids and other beverages filling production line, will certainly inject new momentum into the development of the food and drug industry. In addition, the study of the filling production system can promote the rapid development of China's filling production line, so that the integrated assembly line equipment technology is constantly reformed and innovated to further improve the filling efficiency and product quality.

This filling system design mainly adopts electrical automatic control to realize filling and packaging, using Mitsubishi PLC as the core to set the required filling time, packaging sealing time and shipping time in advance, and the remaining work is completed by the automatic filling machine of this product, which improves the production efficiency and cost of the enterprise. It mainly consists of conveyor belt, filling machine, inspection system, sealing and packing system, loading and transportation system and pushing device. The multifunctional liquid filling machine is a PLC-controlled motor-driven automatic filling and processing device, and its braking process utilizes a typical ladder diagram control.The PLC-controlled multifunctional automatic filling system has the features of simple connectivity, high precision and strong anti-interference, and it can work in the occasions where the working environment is relatively harsh, integrated process, and it has the functions of fault detection and operation indicator, which can timely find out the Problems. This paper focuses on beverage processing design of Mitsubishi FX2N-32M series PLC I / O allocation and external wiring diagram, and according to its actual work process and process requirements for simulation simulation run, the results of the run with the same actual production requirements.

1 system structure and control function analysis

Multi-functional integrated metering filling machine is mainly suitable for beverage and other beverage processing process, the filling of beverages and other filling can be realized filling, packaging sealing and shipping of the automatic integration of the main process of its work:

1) Start. Press the "start" button, the work indicator (green) light, the conveyor belt work.

2) Empty bottle detection. When the empty bottles on the conveyor belt through the empty bottle detection sensor X1, the empty bottle counter counts and displays, when it reaches a certain value (according to the demand for their own settings, the design of this demonstration with 999999999), the alarm prompts the light Y11 lit.

3) Filling equipment work. When the conveyor belt transport of empty bottles through the empty bottle positioning detection sensor, filling equipment to detect empty bottles after 1s after the start of the filling work, filling 5s, the conveyor belt will be filled to the next step (according to the actual demand for time to set up their own, this design uses 5s), in the filling work during the setting of the prompt light Y10 to 0.5s frequency flashing, and the conveyor belt Y1 to stop running.

4) Quality standard detection. Quality standard detection mainly adopts the pressure type quality sensor to detect the filling and the required standard products, when passing through the X6 standard detection sensor, if the quality is greater than or equal to the required standard, then the filling is successful, with the conveyor belt to continue to transmit; if the quality is less than the required standard, then trigger Y3 to promote the device, push it to the inferior product area. The Y6 indicator will light up when the whole process is running.

5) Full bottle detection. When the filled product on the conveyor belt passes through the full bottle detection sensor X0, the full bottle counter counts and displays, when it reaches a certain value (set by yourself according to the demand, this design uses 999999999 to demonstrate), it will automatically stop the conveyor belt operation and extinguish the alarm light Y11 when the empty bottles are overloaded.6) Sealed packaging equipment. When the bottles on the conveyor belt through the X7 packaging detection, packaging sealing equipment work, work 5s to continue the next link, the conveyor belt stops running during the work, and the indicator light Y12 is on, the end of the work indicator light off.

6) Sealing packaging equipment. When the bottle on the conveyor belt passes through X7 package detection, the package sealing equipment works, continues the next session after working for 5s, the conveyor belt stops running during the working period, and the indicator light Y12 is on, and the end-of-work indicator light is off.

7) Mechanical baffle equipment. The two frontmost plates of the mechanical baffle rotate with the bearing as the center respectively to return the finished products on the conveyor belt at the end to the box. When the bottle passes through X30 end detection, it triggers Y5 baffle to rotate and return the finished products to the box. During its working process, the indicator light Y13 glows and goes out after the end. 8) Shipping device. After the baffle returns the finished product to the box, when the stacked quantity reaches a certain value and then triggers to the full box detection X31, it triggers the loading and transportation system to start, and the indicator light Y14 sends the finished product in the box to the car or other storage location through the robotic arm. At the end of loading and transportation, the above steps continue to cycle.

2 PLG selection

Mitsubishi PLC is selected, and according to the number of I0 ports, 16-point input/16-point relay output is used.

3 Control program sequence function

The main flow of this multi-functional integrated filling production line is as follows: first of all, when the start button is pressed, the conveyor belt begins to work, the empty bottles are supplied to the conveyor belt, the empty bottles on the conveyor belt will be the first to pass through the empty bottle sensing detection, which will trigger the empty bottle counter for counting and displaying the number of the current empty bottles; and then after the empty bottles are positioned and detected 18, the filling equipment begins to work, and the working time is determined according to the actual demand. When the bottles after filling on the conveyor belt after quality induction detection, if meet the quality standards will continue with the conveyor belt to the next link (if less than the standard, then trigger the push device, will not meet the product pushed to the second product area, and then continue to work normally), meet the standard after the full bottle detection and counting display, the conveyor belt to continue to work, when after the packaging sealing inductance detection, trigger the packaging sealing equipment work, the semi-finished products processed into finished products, and finally, the working time according to the actual demand. The semi-finished product will be processed into finished product, finally when the finished product of beverage or water runs to the end of conveyor belt after the end of the induction detection, triggering the mechanical baffle to run, will be filled on the conveyor belt to push the finished product through the rotation of the box, when the box reaches the full box detection, the conveyor belt stops working, the loading and transportation system is started, and the following mechanical arm will be the finished product of the box to send to the car and other storage areas. During the filling, pushing, packing sealing and shipping process, the conveyor stops working until the next step of the process is completed before continuing to work. Empty bottle counter and manual counter can be manually reset, and in each working session, there will be a corresponding work indicator light prompts.

4 Conclusion

The multifunctional automatic filling machine is based on the design of PLC automatic control system, this paper describes the basic design ideas and functional realization of this system. Theoretically demonstrated the feasibility of the implementation of the system, but also in the experiment simulation debugging, according to the final simulation, the final result is that the automatic filling machine can be in accordance with the preset control requirements for stable operation.

This filling assembly line system is suitable for small and medium-sized factories and enterprises, and can realize automatic integrated integration, in order to achieve high efficiency under the premise of both greatly reducing the labor force, but also to ensure the quality of the product. Filling, testing, packaging, sealing, shipping and other functions of the product are realized. At present, China is in the assembly line automation during the progress, this multi-functional automatic filling will play a role in promoting the development of automatic and integrated production line, PLC is also a wide range of prospects for the use of the two combined application can make China's production line further development.