Development Status Of Injection Molding Machine Industry

Injection molding machine manipulator is an automatic production equipment that can imitate some functions of the upper limbs of the human body, and can be automatically controlled to transport products or manipulate tools according to predetermined requirements. Chinese plastic processing factories in South China and East China coastal areas are showing more and more interest in manipulators, but the penetration rate of injection molding machine manipulators in the domestic plastic machine industry is less than 10%. Manipulators ensure cycle consistency, improve quality, and are safer. With the rapid development of the plastic processing industry in our 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 increase productivity. The quantity of my country's export and import injection molding machines is basically the same, both about 15,000 units, but the import value is 920 million US dollars, and the export value is 350 million US dollars. Precision injection molding machines are mainly foreign brands, and biaxially stretched PET and film units in extrusion equipment, precision medical catheter extrusion units, etc. 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 it can also enable my country to occupy a place in the international high-end plastic machinery market. Traditional plastic machinery still has a certain potential in terms of energy saving, because the previous design often only focused on the production capacity of a single machine. In the design of energy-saving plastic machinery, the production speed is not the most important index, but the most important index is the energy consumption per unit weight of products processed. Therefore, it is necessary to optimize the design of the equipment's mechanical structure, control mode, and operating process conditions based on minimum energy consumption.

As energy saving and consumption reduction has become a national strategy, the issue of energy saving of injection molding machines has also been widely concerned. There are two relatively mature methods for energy saving in the field of conventional injection molding machines for motors: inverters and servo motors, among which servo motors are more and more widely accepted.

The servo energy-saving series injection molding machine is 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 and flow, and the pressure and flow are precisely closed-loop controlled to realize the servo motor. High-speed response and best matching and automatic adjustment of machine energy demand.