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Knowledge summary and sharing of packaging machinery automation technology in my country

Feb 23, 2021

Professor Li Zhenliang from the School of Mechanical Engineering of Tianjin University of Science and Technology feels deeply about this: “my country’s packaging industry has weak self-development capabilities and lacks scientific research and production bases. At the same time, there are few leading domestic companies with large-scale production. In fact, it is similar to Germany, Italy and other countries. Compared with the packaging machinery products in China, the gap is the room for domestic machinery manufacturers to rise. Especially for machinery that uses metal belts such as fully automatic steel strapping machines.” Although the domestic packaging machinery market has a bright future, such as stand-alone automation and appearance Unsightly, short life, poor stability and reliability have also caused domestic packaging machinery products to be criticized.


   The notice on the main points of the administrative license acceptance review for cosmetics was issued. Twenty years ago, the PLC (programmable controller) first applied to packaging machinery products opened the era of packaging machinery automation technology. The earliest semi-automatic/full-automatic packaging machinery appeared, such as semi-automatic baler and fully automatic baler. Later, with the intervention of control and drive technology, servo technology, and digital-to-analog conversion concepts, the packaging machinery market has undergone many rounds of changes. At present, China has become the world's largest producer and exporter of commodities. At the same time, the world's attention is also focused on the fastest growing, largest and most potential Chinese packaging market.


   Flexible production-make product packaging more flexible


   At present, in order to adapt to the fierce competition in the market, major companies have shorter and shorter product upgrade cycles. For example, the production of cosmetics can generally be changed every three years or even every quarter, and the demand is relatively large (such as wooden boxes used for packaging equipment goods), so the flexibility and flexibility of packaging machinery are very high. Requirements: The life of packaging machinery is much longer than the life cycle of the product. The concept of flexibility can be mainly considered from these three aspects: the flexibility of quantity, the flexibility of construction and the flexibility of supply. Specifically, to make packaging machinery have good flexibility and flexibility, and to increase the degree of automation, it is necessary to adopt microcomputer technology, functional module technology, etc. For example, on a food packaging machine, combining different units on the basis of one machine, using multiple inlets and multiple different folding packaging forms, can simultaneously package different types of products. Multiple manipulators operate under the supervision of a host, and pack different types of food in different ways according to instructions. If there is a requirement for product change, just change the calling program in the host.


   Motion Control Technology


   The development of motion control technology in China is very rapid, but the development momentum in the packaging machinery industry appears to be insufficient. The function of motion control products and technology in packaging machinery is mainly to achieve precise position control and strict speed synchronization requirements, which are mainly used for loading and unloading, conveyors, marking machines, palletizers, depalletizers and other processes. Professor Li believes that motion control technology is one of the key factors that distinguishes high-end, medium- and low-end packaging machinery, and it is also the technical support for the upgrading of packaging machinery in my country. Since the entire machine in the packaging industry is continuous, it has extremely high requirements for speed, torque, precision, and dynamic performance, which also fits the characteristics of servo products.


   Manufacturing execution system applications need to break through the bottleneck


   In recent years, integration technology has developed rapidly in the packaging industry. There are many types of packaging machinery and equipment, which makes the interface docking of products of different manufacturers, the transmission methods between equipment and industrial computers, and information and equipment encountered great difficulties. In this case, packaging companies turn to Manufacturing Execution System (MES) for solutions. However, it is understood that the application of MES in the packaging industry is not as good as people expected.


  The field of safety testing is gradually expanding


  Safety is the number one key word in any industry, especially in the packaging industry. In the food industry, safety detection technology has developed rapidly in recent years. Specifically, it is to improve the accuracy of the finished ingredients of mechanical products. At the same time, it must be able to record and store information such as the operator, ingredient variety, production time, and equipment number. We can achieve our goal by weighing, temperature and humidity sensors and other functional components.