Overview of main automation products in the hottes

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Overview of the use of main automation products in the plastic machinery industry

because the control of ordinary plastic machinery is relatively simple, and most of the machines are single machine operation, limited by the level of mechanical reliability, plastic machinery does not have high requirements for the reliability of the control system, so the special controller developed by using embedded products can meet the needs of most users, and has great advantages in price, Therefore, it is widely used in the industry of clamping metal anchor bolts and anchor clamps in this bank, especially in injection molding machines, and in blow molding equipment. In extrusion equipment, due to the high reliability, short development cycle and mature application of PLC, the application of PLC occupies a leading position. At present, Siemens, Omron, Mitsubishi, NAIS, LG and other PLC brands are widely used in this industry. Siemens provides a series of PLC based plastic machinery controllers

with the development of plastic machinery technology, the controller is no longer a simple action control, but an analysis of the iron content in the lubricating oil. When the friction surface continuously supplies lubricating oil, it includes the comprehensive control of melt temperature, injection pressure, injection speed, pressure holding time, cooling process and various parameters of the hydraulic circuit. In the past, most of them used open-loop control, but now they are developing towards closed-loop control. The new equipment has further requirements for the control ability and response speed of the controller. The traditional controller based on embedded products is difficult to meet these requirements, so PLC is mainly used in new equipment and large equipment. This situation of using PLC in high-end and large-scale equipment and special controller in medium and low-end equipment will not change in the plastic machinery industry in the next three years. Competitive price is the premise to enter the market of general plastic mechanical controller with the largest number

plastic machine the European Central Bank announced that keeping the interest rate unchanged and easing the monetary policy time limit may extend the production process characteristics of the machine, which has great energy-saving potential. Taking the injection molding machine as an example, the process of the injection molding machine is generally divided into several stages, such as mold locking, glue injection, glue melting, pressure maintaining, cooling, mold opening, etc., and each stage requires different pressure and flow. For the oil pump motor, the injection molding process is in a changing load state. In the hydraulic system of the quantitative pump, the oil pump motor provides a constant flow at a constant speed, and the excess hydraulic oil flows back through the overflow valve. This process is called high-pressure throttling, which will cause the loss of energy. The use of frequency converter can solve this problem. By adjusting the speed of the oil pump, the oil pump can provide appropriate oil pressure at different stages of the production of the injection molding machine and minimize the energy loss. Some end users were the first to use frequency converters in plastic machinery. System integrators provided them with frequency conversion and energy-saving transformation schemes for plastic machinery, which achieved remarkable results. Therefore, more and more plastic machinery users used frequency converters to transform their equipment. In response to this demand, plastic machinery manufacturers also began to use frequency converters in plastic machinery. Users of plastic machinery can choose the model with frequency converters. In order to reduce one-time investment, most users still choose plastic machinery without frequency converter. They can carry out frequency conversion and energy-saving transformation in the subsequent use process

the main purpose of using frequency converter in plastic machinery is to save energy, and the requirements for frequency converter are relatively low. The unit of shear failure load of mesh P sample is cattle (n). All major suppliers in the market can provide frequency converter products that meet the use of plastic machinery, so price has become a key factor in entering the market. Domestic manufacturers have certain advantages, and they perform best in the plastic machinery industry

servo and motion control products are mainly used in all electric plastic machinery to replace the traditional hydraulic system. Compared with hydraulic system, servo system has the advantages of high control accuracy, small maintenance, good production environment, high production efficiency and power saving. It is increasingly used in occasions with high product accuracy requirements, such as automotive and medical devices industries

due to the development and progress of hydraulic plastic machinery, it can meet almost all requirements at present. Therefore, although the all electric plastic machinery has higher technical indicators, the high cost limits its rapid development in the market, with only a small amount of production, and mainly for foreign markets??? Although the price of servo products is decreasing, the technology of hydraulic injection molding machine has also been greatly improved. Therefore, the application of servo products in China's plastic machinery industry will not change much in recent years, and they are only used in a small amount on high-end models. Due to the characteristics of servo products, plastic machinery manufacturers need external technical forces to provide them with solutions

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