1. After the injection molding machine is installed with frequency conversion speed regulation, the speed of the main motor changes with the speed of the injection molding machine, the cycle time of the injection molding production cycle is short, the frequent speed of the action causes the main motor to frequently be in the process of acceleration and deceleration, because the motor acceleration and deceleration response time is longer, resulting in the increase of the injection molding cycle time and the reduction of productivity. The frequency converter produced by our company can be controlled online with the computer of the injection molding machine. Through the control of the frequency converter by the computer, the output frequency and output torque of the frequency converter can be decoupled to achieve the cooperation between the frequency converter and the action of the injection molding process, and the bottleneck of the injection molding machine caused by the application of frequency conversion energy-saving technology can be reduced.
2, with the reduction of motor speed, the speed of the fan blade connected to the motor rotor is also reduced, resulting in poor motor heat dissipation. In addition, the insulation effect of the insulation layer is reduced under the impact of the frequency conversion voltage of the inverter. At present, the motor manufacturer has specially produced frequency conversion motor, that is, for these two points have been improved, the motor fan is independent of the rotor, the speed is not affected by the motor speed reduction, the insulation layer is also used better materials, thus solving the problem of the frequency converter affecting the motor life.
3, vane pump work mainly rely on high-speed rotor to throw out the blade, so as to achieve the purpose of oil absorption. If the rotor speed is reduced, the blade does not have enough centrifugal force, can not effectively press the stator surface, so that the internal leakage of the pump is increased, the efficiency is significantly reduced, when the speed is lower than a certain critical value (such as 400r/min), the oil absorption capacity of the vane pump becomes poor, and even can not produce oil, when this problem occurs, it is necessary to increase the frequency set signal gain. In addition, the development of internal gear pump will gradually replace the vane pump to become the mainstream of the development of injection molding machine oil pump, so as to solve the problem of low speed oil absorption of the vane pump.
4, high voltage mode-locking and slow mold opening, the inverter runs at low speed and high torque state, the current is easy to exceed the rated value and cause overcurrent protection, the input end of the inverter produced by our company is equipped with the input point of mold locking and mold opening, connected with the output point of the mold locking and mold opening of the injection molding machine computer, through the specific frequency converter software to make the motor in mold opening and mold locking to maintain high speed operation. Avoid low speed and high torque conditions.
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Add:NO.288 Zhuangshi Road,Zhuangshi Industrial Distrial Area,Ningbo City,China.
Manager Wu:0086-18858011231
Manager Chen:0086-13858285673
Manager Emma: 0086-18758327792
Tel:0574-86322398
E-mail:6882601@163.com