At present,the competition pattern of inverter and servo industry is dominated by foreign capital,both of which occupy about 80%market share.From the general trend,Jiju Network editor believes that the most outstanding industrial automation manufacturers in China will surely lead the overall share increase of domestic capital brands in the future.The low-voltage frequency conversion and servo industry will grow at an average annual rate of 10%(slightly higher than GDP)in the next 10 years,and the market size will be RMB 41.7 billion and RMB 13.8 billion by 2020,respectively.This major vacancy in the domestic market requires the continuous r&d and innovation of the majority of plastic machinery and accessories manufacturers.At present,huichuan technology is a dominant,which does not want to match with the domestic competitive environment.

China is a big country in the injection molding machine industry,with an annual increase of 80,000-90,000 injection molding machine equipment.The power of servo driver of injection molding machine is generally relatively large.It is expected that the company's servo system business revenue is still expected to double in 2011.The development experience of frequency converter in China is more tortuous:

First,foreign brands monopolize the market.In the 1990s,China's import of high-voltage inverter was mainly a supporting key project.At this time,domestic customers were not aware of the effect of energy saving,and the products were sold at a high price.

Second,domestic enterprises have found the high-voltage frequency conversion market and sought for technical breakthroughs.However,they are faced with two major problems,distrust of customers and unstable products.Although the price is less than half of that of foreign brands,domestic enterprises can only obtain orders from small customers due to performance problems.

Third,domestic enterprises have made breakthroughs.After accumulation,the technology is no longer a problem,the reliability has met customer requirements,and the brand has been gradually established.Foreign brands generally lag behind local enterprises in terms of service,which gives domestic enterprises a good opportunity for development.

Fourth,domestic enterprises are in full bloom.When large customers realize that foreign brands no longer monopolize the market,they will pay more attention to domestic enterprises,and the process of localization will be accelerated.

And the development trend of frequency converter in our country is:drive of ac,power converter of high frequency,control of digital,intelligent and networked so that our country want to have a greater role in injection molding machine,the research and development of frequency converter and technology update is indispensable!

For the plastic products industry,power consumption is the main part of its production cost,and the injection molding machine is one of the main energy consumption equipment in the plastic products factory:at present most of the injection molding machine belongs to the hydraulic drive injection molding machine,the power in the hydraulic drive system is provided by an electric motor driven oil pump.In the production cycle of injection molding,injection molding machine in different procedures under the need of different flow and pressure,must rely on the flow valve and pressure valve to adjust the flow and pressure of different procedures.Hydraulic system load changes greatly,because the quantitative pump can not adjust the output power,so the excess energy can only be consumed in baffle,oil leakage,oil temperature rise.This not only aggravates the wear and tear of all kinds of valves,but also causes excessive oil temperature,excessive motor noise,as well as the phenomenon of shortened mechanical life.In general,in the design,the designed capacity of the user's oil pump motor is much higher than the actual demand,which leads to the phenomenon of"big horse and small car",resulting in a large amount of waste of electric energy.Therefore,it is of great significance to popularize the application of AC variable frequency speed regulating device in injection molding machine to reduce energy waste and production cost.

Energy-saving reform of the advantage of the inverter in the injection molding machine is more strong,injection molding machine of inverter wiring,retain the original injection molding computer control system and hydraulic drive system of oil and the Y step-down start running of the motor circuit constant,variable frequency energy/power frequency conversion control mode operation,to avoid the failure affect normal production:replace the mould just by changing the processes of the injection molding machine computer board,make any adjustment to frequency converter.