Automatic Modification Design Of Lubricating Oil Filling Line Based On S7-300 PLC

With the rapid economic development and improvement of people’s living standards, more and more people pay attention to the industrial field of filling. Filling machine plays the role of key equipment in a variety of industries like chemical, food and some other industries with the continuous improvement of industrialization level. Filling equipment technology tends to direction of diversification, automation and practicability with the changing needs of customers.The lubricating oil industry demands higher standards of the automation degree and speed of filling line, and the lubricating oil market presents a diversified development direction. These have put forward higher standards and requirements for filling production line. With such kind of development needs of this industry, the Sinopec Lubricating Oil Co., Ltd. Jinan branch in 2004 determined to introduce foreign oil packaging production line. As its own production adaptability has certain limitations, it was in the idle state after using a period of time. Recently, in order to meet the growing market demand and supply, improve the production capacity of small packaging products, and allow the original imported equipment to play its due value, we decided to carry out technical transformation for this filling line.This paper introduces the design of a transformation of foreign traditional filling production line of the Sinopec Lubricating Oil Co. Ltd. Jinan branch. We do the transformation so as to apply to different barrel and filling specification changes, and improve the filling speed. This paper is based on full range analysis in the filling process of conventional oil. Using S7-300 PLC as the main control system to realize modification of lubricating oil automatic filling production line, transform lubricating oil filling machine from the original 6 filling heads into 12 filling heads now, change the original weighing filling to volume filling in the filling mode, ensure high speed filling line, improve production capacity. The filling line achieves multi valve open, no aluminum foil cover removed, automatic capping, anti barrel detection, and less detection automatic control process by SIEMENS series programmable controller. At the same time, the system hardware and software design and filling quality online monitoring system are presented. Finally, the field test results show that the system is operating normally, and has achieved the goal of technical transformation.In this paper, the lubricating oil filling line automation renovation project has been completed and passed the acceptance system. The lubricating oil filling line has been put into work for 6 months creating a considerable economic benefits for the enterprise.