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What is The Mechanical Principle of the All-Electric Injection Molding Machine?

Nov. 02, 2020


1.Mold opening, mold clamping, thimble and other actions adopt high-precision screw nuts, and the transmission accuracy is 0.01mm.


2. The linear guide rail transforms the traditional reciprocating sliding guide into rolling guide, improves positioning accuracy, reduces mechanical cost and greatly saves electricity, and can maintain high precision for a long time.


3. Adopt a new type of load cell to accurately control the back pressure to achieve stable precision injection.


4. The timing belt wheel and timing belt have simple structure, convenient installation, high transmission accuracy and low noise.


5. Centralized lubrication and volumetric proportional distributor are used to ensure sufficient lubrication at each point.


Injection Molding Machine

Injection Molding Machine

The principle of electronic control of Automatic Injection Molding; Servo system: It is an automatic control system that enables the output controlled quantity of the object's position, orientation, and state to follow the arbitrary changes of the input target. The main task of the servo is to amplify, transform and adjust the power according to the requirements of the control command, so that the torque, speed and position output of the drive device are very flexible and convenient.


The working principle of the mode-locked servo motor: The servo motor is a typical closed-loop feedback system. The reduction gear set is driven by the motor, and its terminal drives a linear proportional potentiometer for position detection. The potentiometer converts the corner coordinates into a proportional voltage for feedback. The control circuit board compares it with the input control pulse signal to generate correction pulses, and drives the Vertical Injection Molding Machine to rotate in the forward or reverse direction, so that the output position of the gear set matches the expected value, and the correction pulse tends to 0, so as to achieve the purpose of precise positioning of the servo motor.


Servo motor control: The standard servo motor has three control lines: power, ground and control. The power line and ground line are used to provide the energy required by the internal motor and control circuit. The voltage is usually between 4V and 6V. The power supply should be isolated from the power supply of the processing system as much as possible. Even a small servo motor will pull down the voltage of the amplifier under heavy load, so the power supply ratio of the entire system of the Injection Molding Machine must be reasonable. Input a periodic positive pulse signal. The high level time of this periodic pulse signal is usually between 1ms and 2ms, and the low level time should be between 5ms and 20ms.


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