Industrial Horizontal Rubber Injection Molding Machine High Speed

Industrial Apply Rubber Injection Machine Horizontal rubber Injectio Machine

Working Procedure & Energy Consumption of Hydraulic Injection Machine:

Analysis of working process and energy consumption of hydraulic injection molding machine

The hydraulic injection molding machine has been widely used in injection molding. It uses a hydraulic oil pump to suck, press and output from the fuel tank. The proportional valve is used to control the pressure, flow and direction of the oil to meet the different stages of the injection molding process. The pressure, flow and direction required. In hydraulic injection molding machines, the most used is the oil pump motor. Therefore, research on the energy saving of hydraulic injection molding machines should start from the energy saving of oil pumps.

When the load changes, the working characteristic curve of the injection molding machine is as shown by Mj (j=1, 2) in Fig. 1, and the oil pump motor is set to work at point A in Fig. 1, and the process of holding pressure and cooling of the injection molding machine is performed. When the motor will work at point B in Fig. 1, the rotation speed is slightly increased, and the corresponding torque and rotation speed are T2 and n2, respectively, and the power is corresponding to the rectangle Bn20T2 in the figure. At this point, the injection molding machine does not have a speed increase requirement, the speed should be n1, the torque should be T3, and the required power should correspond to Cn10T3 in the figure. The dotted line in the figure can be seen as wasted power. If the motor can work in C (n1, T3), it will save energy and achieve efficient operation.

Analysis on Energy Saving Ways of Hydraulic Injection Molding Machine Motor:

The injection molding process of the injection molding machine is a cyclic process. A complete injection molding process consists of clamping, injection seat advancement, injection, pressure holding, cooling, plasticizing, mold opening, and ejector products. In this continuous process, the required pressure and time are different at each stage, where the clamping process requires a slightly higher pressure and the duration is not long; the injection process requires high pressure and the duration is very short; the pressure holding process Higher pressure is required, and the duration is not long; the cooling and plasticizing process only requires low pressure, and the duration is long, accounting for 40%-60% of one injection cycle; the pressure required for mold opening and ejection process is slightly High, the duration is not long.

In addition to the high pressure required during the injection process, the injection molding machine is lighter in other stages, especially during the cooling process. The oil pump is basically unloaded and has a long maintenance time. The pressure control of the injection molding machine can be achieved by controlling the output power of the oil pump motor.

 
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