The import of injection molding machine industry is much higher than that of export
The import of injection molding machine industry is much higher than that of export
Injection molding machine industry in China in the process of development, has been the traditional route, early injection molding machine is fully hydraulic, due to the need of environmental protection and energy saving, and mature application of servo motor and the price dropped substantially, the electrodynamic precision injection molding machine more and more in recent years. According to 2001 statistics, China imported injection molding machines for $1.12 billion, while the export injection molding machine was only $130 million, and the import was much larger than the export.
At present, China's injection molding machine products mainly focus on the generic medium and small equipment, the low grade products of the 1980s and 1990s are oversupplied, the mechanical manufacturing capacity is excessive, and the enterprise benefit is reduced. Some varieties, especially superfine and high-grade products or blank, still need to be imported.
Hydraulic injection molding in the aspect of forming precision, shape of complex products has many unique advantages, it is from the traditional single cylinder liquid type, multi-cylinder liquid type development to the present two plate straight pressure type, of which two plate direct pressure type is the most representative, but its difficult to control technology, high machining precision, hydraulic technology is also difficult to master.
All electric injection molding machine has a series of advantages, especially in environmental protection and energy saving advantages, due to the use of servo motor injection of high control precision, speed and relatively stable, can also be multistage regulation. But all electric injection molding machine on the service life of the fully hydraulic injection molding machine, and the fully hydraulic injection molding machine to ensure precision must be used with closed-loop control of servo valve and servo valve is expensive, cost rise.
Electric - hydraulic injection molding machine is a new type of injection molding machine integrating hydraulic and electric, it combines the hydraulic type high performance and energy-saving advantages of fully electric injection molding machine, the combination of electric and hydraulic compound injection molding machine has become an injection molding machine technology development direction. Injection molding industry is faced with a rapidly developing opportunities, however in the cost of injection products, electricity accounted for a considerable proportion, according to the requirements of injection molding machine equipment process, injection molding machine oil pump motor power consumption accounts for the proportion of the consumption is as high as 50% to 65%, thus great energy-saving potential, design and manufacture a new generation of "energy-saving" injection molding machine, becomes the urgent need to pay attention to and solve the problem.
After China joined the world trade organization (WTO), foreign machinery manufacturing of accelerating the transformation of China, some of the world famous enterprises of injection molding machine, such as Germany's mark, krupp, baden phil, Japan's sumitomo heavy industries such as the company has "in China, some still further set up a technology center. The entry of foreign injection molding machine manufacturers brings vitality to the Chinese injection molding machine industry, and it also brings opportunities and challenges to Chinese injection molding machine manufacturers.
