Development of injection molding machine industry

      The robot for injection molding machines is an automated production equipment that can imitate some functions of the upper limbs of the human body and can be automatically controlled to transport products or hold tools for production operations according to predetermined requirements. Chinese plastic processing factories in the coastal areas of South China and East China have shown increasing interest in robots, but the penetration rate of robots for injection molding machines in the domestic plastic machinery industry is less than 10%. Robots can ensure the consistency of the operation cycle, improve quality, and be safer. With the rapid development of the plastic processing industry in my country, the degree of automation of injection molding equipment is also getting higher and higher. Modern injection molding machines are often equipped with robots to improve production efficiency. The number of injection molding machines exported and imported by my country is basically the same, both about 15,000 units, but the import value is US$920 million and the export value is US$350 million. Precision injection molding machines are mainly foreign brands, and biaxially oriented PET, film units, precision medical catheter extrusion units, etc. in extrusion equipment have always been the territory of foreign companies. It is very necessary to develop domestic precision injection molding and extrusion equipment with independent intellectual property rights. On the one hand, it can replace imports, and on the other hand, it can also enable my country to occupy a place in the international high-end plastic machinery market. Traditional plastic machinery still has certain potential in energy saving, because previous designs often only focus on the production capacity of a single machine. In the design of energy-saving plastic machinery, production speed is no longer the most important indicator. The most important indicator is the energy consumption of processing unit weight products. Therefore, the mechanical structure, control mode, and operating process conditions of the equipment must be optimized based on the minimum energy consumption.
      As energy saving and consumption reduction have become a national strategy, the energy saving of injection molding machines has also been widely concerned. There are two relatively mature ways of energy saving in the field of conventional injection molding machines: frequency converters and servo motors, among which servo motors are increasingly widely accepted.
      The servo energy-saving series injection molding machines are equipped with a high-performance servo variable speed power control system. During the molding process of the injection molding machine, different frequency outputs are made for different pressure flows, and precise closed-loop control of the pressure flow is performed to achieve high-speed response, optimal matching, and automatic adjustment of the servo motor to the energy demand of the injection molding machine.