Electric injection molding machine is the best energy-saving injection molding machines, providing a useful inspiration for saving hydraulic injection molding machines, mainly: to improve the efficiency of the power drive system, the second is to reduce energy loss, the third is to promote hydraulic injection molding machines accelerate energy technologies development and application.

Faced with low-power electric injection molding machine energy challenges, hydraulic injection molding machine has also been great progress. Injection molding machine manufacturer attaches great importance to the development and application of energy-saving technologies, mainly for the development of the hydraulic power system, there is the use of frequency control devices and the use of sensitive loads such as two types of pumps. The nature of the injection molding machine energy consumption is the energy output of the power system, the processing of a similar product, the output of the energy that is less energy efficient.Saving injection molding machines, in fact, bear with two main aspects, one actuator (clamping mechanism, injection mechanism) the type and efficiency, the second is the type and efficiency of the power control system. Third, energy-saving injection molding principle. At present, research and development of energy-saving injection molding machine technology, lack of energy-saving injection molding principle of innovation and development.

The development of energy-saving injection molding machine. Existing energy-saving injection molding machine with the same point of the injection molding machine has different points, the same point is both energy-saving and energy-saving powertrain actuators, various energy-saving injection molding machine injection molding principles necessary to have energy. At present, research and development of energy-saving injection molding machine technology, lack of energy-saving injection molding principle of innovation and development. From a fundamental energy-saving injection molding, injection molding principles of energy conservation must be developed, and agencies, electrical control and hydraulic power systems for injection molding principles of service, is an auxiliary energy conservation. Only the development of new energy-saving injection molding principles, coupled with energy-efficient power systems and implementing agencies, in order to achieve real energy saving injection molding machine.For example, Ningbo Haihang Plastic Machinery Manufacturing Co., the principles of innovation and large-scale high-speed low-pressure injection-mold hot runner injection molding of energy, according to the principle of the development of this energy-saving 50000g large injection molding machines, hydraulic power system load power is only 37kW, is the same size of ordinary horizontal injection molding machine 1/6 to 1/7, the whole total load power is only 192kW, the development of energy-saving injection actuator based on the principle of injection speeds of up to 4000g / s, tray forming machine a 150cmX100cm cycle is only 4.5 minutes, the energy consumption is 50% of normal horizontal injection molding machine, which solves the problem of energy-saving injection molding machine large fundamentally; the whole weight of only 55 tons, less than the same size horizontal injection molding machines by weight of a template.

Thus, if just from the hydraulic power drive systems move saving brains could never achieve substantial breakthroughs in energy efficiency, can never be the power to drive the hydraulic system from a conventional over 300 kilowatts to 37 kilowatts reduced. The "expansion injection molding" high-speed injection molding, for example, ENGEL's researchers found in experiments, even without a lot of energy to get the screw 1000mm / s above the injection speed, and actually get the injection rate was only 1 screw injection speed / 10, and most of the energy consumed for compressing the metering chamber in front of the screw melt,After the injection screw in the end, the compressed high-pressure melt continues to flow into the cavity, until the establishment of the pressure balance date, illustrates the relationship between the ultra-small and ultra-high injection rate of injection speed, so invented a new high-speed injection molding - "expansion injection molding," the principle of the injection molding technology does not depend on the use of ultra-high injection speeds but the energy stored in the melt to achieve ultra high speed injection mold filling, the energy consumption is only general high-speed injection molding of 1/3 to 1/2.