Die casting machine frequency conversion solution

Introduction of Die casting machine frequency conversion solution

For die casting products industry, the electricity consumption is the main part of its production cost, and die casting machine is one of the main energy consumption equipment, known as the electric tiger. Therefore, reducing energy consumption of die casting machine has become an effective way to reduce cost and improve product competitiveness in die casting industry.

Industry brief

At present, most die-casting machines belong to hydraulic drive die-casting machines. The power in the hydraulic drive system is provided by the motor driving the oil pump. In the process of die casting cycle change, die casting machine in different procedures under the need for different flow and pressure, must rely on the flow valve and pressure valve to adjust the different process required by different flow and pressure. And when the load change is relatively large, due to the quantitative pump can not adjust the output power, so the excess energy can only be consumed in baffle, oil leakage, oil temperature rise, also aggravate the wear of various valves, and cause too high oil temperature, motor noise, and mechanical life shortened phenomenon. And usually in the design of motor capacity is much higher than the actual need, there is a "big horse car" phenomenon, resulting in a large amount of electrical energy waste. Therefore, it is of great significance to popularize the application of inverter in die casting machine to reduce energy waste.

Process description of Die casting machine frequency conversion solution

Die casting machine closing and stripping, mold opening system needs lower oil pressure, and shorter time; Injection, pressure retaining and cooling systems require higher oil pressure and longer time, generally 40%~60% of a working cycle. The length of time in each stage is related to the workpiece. The length of the interval is also related to the processing of the workpiece, sometimes can not be the interval. If the screw is driven by a liquid oil motor, the oil pressure of the injection system will be higher. Die casting machine processing workpiece weight, from tens of grams to tens of thousands of grams. Therefore, the die-casting machine has small and large, processing dozens of grams of small workpiece and processing several kilograms of large pieces of time is not the same, is to the same die-casting machine, processing workpiece raw materials are different, the pressure and time required in each section of the process is also need to change.

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