After the injection molding machine is equipped with frequency conversion speed regulation, the speed of the main motor changes with the speed of each action of the injection molding machine. The cycle time of the injection molding production cycle is short, and the frequent speed of the action makes the main motor frequently in the process of acceleration and deceleration. Due to the acceleration of the motor The deceleration response time is longer, resulting in an increase in injection molding cycle time and a decrease in productivity. The frequency converter produced by our company and the computer of the injection molding machine can be controlled online. Through the control of the frequency converter by the computer, the output frequency and output torque decoupling adjustment of the frequency converter can be realized, so as to achieve the best cooperation between the frequency converter and the various actions of the injection molding process. It solves the bottleneck of production efficiency reduction caused by the application of frequency conversion energy-saving technology on injection molding machines.
As the speed of the motor decreases, the speed of the fan blades connected to the rotor of the motor also decreases, resulting in poor heat dissipation of the motor. In addition, the insulation effect of the insulating layer is reduced under the impact of the variable frequency voltage of the frequency converter. At present, motor manufacturers have specially produced variable frequency motors, which have been improved for these two points. The motor fan is independent of the rotor, and the speed is not affected by the reduction of the motor speed. The insulating layer is also made of better materials, thus solving the problem. The problem that the frequency converter affects the life of the motor.
When the vane pump works, it mainly relies on the high-speed rotor to throw the vanes out, so as to achieve the purpose of oil absorption. If the rotor speed decreases, the blades will not have enough centrifugal force to effectively compress the surface of the stator, so the internal leakage of the pump will increase and the efficiency will decrease significantly. When the speed is lower than a certain critical value (such as 400r/min), the vane pump will The oil absorption ability of the oil becomes poor, and even the oil cannot be released. When this problem occurs, the frequency must be increased to set the signal gain. In addition, the development of internal gear pumps will gradually replace vane pumps and become the mainstream of oil pump development for injection molding machines, thereby solving the problem of poor low-speed oil absorption of vane pumps.
During high-voltage mold clamping and slow mold opening, the inverter runs at low speed and high torque, and the current easily exceeds the rated value, resulting in overcurrent protection. The input end of the inverter produced by our company is equipped with output terminals for mold locking and mold opening The input point is connected with the output point of the mold clamping and mold opening of the computer of the injection molding machine, and the motor is kept running at high speed during mold opening and mold clamping through specific frequency converter software, so as to avoid the state of low speed and high torque.
After the injection molding machine is equipped with frequency conversion speed regulation, the speed of the main motor changes with the speed of each action of the injection molding machine. The cycle time of the injection molding production cycle is short, and the frequent speed of the action makes the main motor frequently in the process of acceleration and deceleration. Due to the acceleration of the motor The deceleration response time is longer, resulting in an increase in injection molding cycle time and a decrease in productivity. The frequency converter produced by our company and the computer of the injection molding machine can be controlled online. Through the control of the frequency converter by the computer, the output frequency and output torque decoupling adjustment of the frequency converter can be realized, so as to achieve the best cooperation between the frequency converter and the various actions of the injection molding process. It solves the bottleneck of production efficiency reduction caused by the application of frequency conversion energy-saving technology on injection molding machines.
As the speed of the motor decreases, the speed of the fan blades connected to the rotor of the motor also decreases, resulting in poor heat dissipation of the motor. In addition, the insulation effect of the insulating layer is reduced under the impact of the variable frequency voltage of the frequency converter. At present, motor manufacturers have specially produced variable frequency motors, which have been improved for these two points. The motor fan is independent of the rotor, and the speed is not affected by the reduction of the motor speed. The insulating layer is also made of better materials, thus solving the problem. The problem that the frequency converter affects the life of the motor.
When the vane pump works, it mainly relies on the high-speed rotor to throw the vanes out, so as to achieve the purpose of oil absorption. If the rotor speed decreases, the blades will not have enough centrifugal force to effectively compress the surface of the stator, so the internal leakage of the pump will increase and the efficiency will decrease significantly. When the speed is lower than a certain critical value (such as 400r/min), the vane pump will The oil absorption ability of the oil becomes poor, and even the oil cannot be released. When this problem occurs, the frequency must be increased to set the signal gain. In addition, the development of internal gear pumps will gradually replace vane pumps and become the mainstream of oil pump development for injection molding machines, thereby solving the problem of poor low-speed oil absorption of vane pumps.
During high-voltage mold clamping and slow mold opening, the inverter runs at low speed and high torque, and the current easily exceeds the rated value, resulting in overcurrent protection. The input end of the inverter produced by our company is equipped with output terminals for mold locking and mold opening The input point is connected with the output point of the mold clamping and mold opening of the computer of the injection molding machine, and the motor is kept running at high speed during mold opening and mold clamping through specific frequency converter software, so as to avoid the state of low speed and high torque.
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