How injection molding machine companies can improve their market competitiveness
According to statistics, about 70% of China's plastic machinery is an injection molding machine. From the United States, Japan, Germany, Italy, Canada and other major producing countries, the output of injection molding machines has increased year by year, accounting for the largest share in plastic machinery.
With the rapid development of China's injection molding market, related core production technology applications and research and development will certainly become the focus of attention in the industry. It is critical to understand the development trend, process equipment, technology application and trends of core technologies for injection molding at home and abroad for companies to improve their product specifications and increase their market competitiveness.
In the injection molding industry, in 2006, the proportion of injection molds further increased, the levels of hot runner molds and gas-assisted molds further increased, and the injection molds developed rapidly in terms of volume and quality. The largest single injection mold in China has exceeded 50 tons in weight. The precision of the most precise injection mold has reached 2 microns. While CAD/CAM technology has gained popularity, CAE technology has become more widely used.
In current production, almost all injection pressures are based on the pressure exerted by the top of the plunger or screw on the plastic. The appeal of injection pressure in injection molding is to overcome the resistance of the plastic from the flow of the cartridge to the cavity, to give the speed of the filling of the melt and to end the compaction of the melt.
Injection molding machine energy saving, cost savings is the key
Injection molding machines are the largest type of presses in China in terms of output and application volume, and they are also the assistants for export of China's presses. In the late 1950s, China's sound field produced the first injection molding machine. However, due to the low technological content of equipment at that time, general-purpose plastics could be used to produce daily necessities with lower technical requirements, such as plastic boxes, plastic buckets, and plastic pots. Injection molding technology has developed rapidly in China, and new technologies and new equipment have emerged one after another. Computer heightened. Automation, single-function multifunction, diversification of auxiliary equipment, rapid assembly, and ease of installation, maintenance, and maintenance become trends.
If you reduce the energy consumption of injection molding machines, you can not only reduce costs for injection molding machine companies, but also contribute to domestic environmental protection. The industry believes that energy-saving and safe injection molding machine products have an important role and positive impact on promoting the transformation and upgrading of China's plastics machinery industry and building a new industrial structure.
Traditional plastic machinery also has certain potential in terms of energy saving. The reason is that previous designs often focused on single-machine production capacity. In the design of energy-saving plastic machinery, the production speed is not the most important indicator. The most important indicator is the energy consumption of processing unit weight products. Therefore, it is necessary to optimize the design based on the minimum energy consumption of the mechanical structure, control mode, and operating process conditions of the equipment.
At present, energy saving in the field of injection molding machines in Dongguan has two mature methods of inverters and servo motors, of which servo motors are increasingly accepted. The servo energy-saving series injection molding machine is equipped with a high-performance servo-shifting power control system. It produces different frequency outputs for different pressure flows in the molding process of the injection molding machine, and performs precise closed-loop control of the pressure flow to achieve servo motor injection molding. Energy-saving energy demand for high-speed response and best matching and automatic adjustment.
General injection molding machine is the use of quantitative pump oil, injection molding process of various actions on the speed, pressure requirements are not the same, it is through the injection molding machine proportional valve overflow adjustment method to excess oil through the return line flow In the return tank, the rotation speed of the motor is constant during the entire process, so the fuel supply is also fixed, and because the execution of the operation is intermittent, it is not possible to be full load, so the quantitative oil supply is very large. The waste of space, according to measured at least 35-50%.
Servo motor is precisely for this waste of space, real-time detection from the injection molding machine numerical control system proportional pressure and proportional flow signal, timely adjustment of the motor speed required for each working condition (ie flow regulation), so that the pump flow and pressure, Just meet the needs of the system, and in the non-operating state, let the motor stop running, so that the energy-saving space is further increased, so the servo energy-saving transformation of the injection molding machine can bring good energy-saving effect.
Some suggestions for injection molding machine companies
First of all, we should establish an export-oriented development strategy, vigorously expand exports, and create conditions for making our products enter the international market. In particular, superior products should strengthen export efforts and increase market share. Encouraging more companies to invest in the research institutes for external peripherals and running enterprises, especially in Southeast Asia, the Middle East, Africa, Russia, and Eastern Europe all have great potential.
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