Energy saving optimization of injection molding machine: a scientific way to adjust parameters and improve process
In recent years, with the continuous rise of global energy prices and the increasing awareness of environmental protection, injection molding machine as an important equipment in the manufacturing industry, its energy consumption has attracted more and more attention. How to optimize the energy saving of injection molding machine by adjusting the parameters and improving the process has become the focus of many enterprises and research institutions. From a scientific point of view, we will discuss the methods and practices of energy-saving optimization of injection molding machines, aiming to provide useful references for practitioners in related fields.
1、Analysis of energy consumption of injection molding machine
Injection molding machine is a kind of equipment that uses plastic molds to form under high pressure, which is widely used in automobile, household appliances, electronic products and other fields. However, the traditional injection molding machine often has the problem of high energy consumption and low efficiency during operation. According to the relevant data, the energy consumption of the injection molding machine in the working process is mainly concentrated in the motor drive, oil pump oil supply and heating system, among which the motor drive energy consumption accounts for more than 60%. Therefore, reducing motor drive energy consumption is the key to achieve energy-saving optimization of injection molding machine.
2、Energy-saving optimization method of injection molding machine
Adjustment parameter
(1) Optimize injection speed and pressure: By accurately controlling injection speed and pressure, unnecessary energy consumption can be reduced. For example, under the premise of ensuring product quality, properly reducing the injection speed and pressure can reduce mechanical wear and energy consumption.
(2) Adjust the pressure holding time: too long the pressure holding time will not only increase energy consumption, but also may lead to product deformation. Therefore, according to the characteristics and needs of the product, reasonable adjustment of the pressure holding time can reduce energy consumption while ensuring product quality.
(3) Optimize the heating system: The heating system is an important part of the energy consumption of the injection molding machine. By using advanced heating technology and reasonable temperature control strategy, the energy consumption of heating system can be reduced. For example, the use of PID temperature control technology can achieve accurate temperature control, to avoid overheating or underheating phenomenon.
Improve the process
(1) The use of energy-saving screw: energy-saving screw has better plasticizing effect and lower energy consumption. By choosing energy-saving screw, the energy efficiency ratio of injection molding machine can be improved and the energy consumption can be reduced.
(2) Optimize mold design: Mold design also has an important impact on the energy consumption of injection molding machine. By optimizing the mold structure, improving the mold precision and surface quality, the energy consumption can be reduced and the product quality can be improved.
(3) Implementation of multi-cavity mold technology: multi-cavity mold technology can produce multiple products at the same time, improve production efficiency and reduce the energy consumption per unit product. In addition, the multi-cavity mold technology can also reduce the amount of waste generation, further reducing energy consumption.
(4) Application of frequency conversion technology: frequency conversion technology can automatically adjust the motor speed and power output according to the load change, so as to achieve the purpose of energy saving. The application of frequency conversion technology in injection molding machine can adjust motor speed and power output according to actual needs, reduce energy consumption and improve energy efficiency ratio.
3、Injection molding machine energy-saving optimization practice cases
Taking a large injection molding enterprise as an example, the enterprise has achieved remarkable energy-saving effect by implementing the above energy-saving optimization method. First, the company optimized the injection speed, pressure and pressure holding time of the injection molding machine, reducing energy consumption by 15%. Secondly, the company adopted energy-saving screw and optimized mold design, which further reduced energy consumption by 10%. Finally, the company also applied frequency conversion technology to transform and upgrade the injection molding machine, reducing the overall energy consumption by more than 20%. After the implementation of this series of energy-saving optimization measures, the energy consumption of the injection molding machine of the enterprise has been greatly reduced, which not only reduces the production cost but also improves the market competitiveness.
4、 Summary and prospect
Through the discussion of energy saving optimization method of injection molding machine and the analysis of practical cases, it can be seen that adjusting parameters and improving technology are effective ways to realize energy saving optimization of injection molding machine. In the future, with the continuous development and innovation of science and technology and the continuous improvement of people’s awareness of environmental protection and the support of energy saving and emission reduction policies, I believe that the energy-saving optimization technology of injection molding machine will be more widely used and developed to promote the green development of China’s manufacturing industry to make greater contributions.
