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What is the difference between a servo injection molding machine and a normal injection molding machine?

January 15, 2023

Injection molding machine generally refers to injection molding machine, also known as injection machine. It is a thermoplastic or thermosetting plastic molding mold made of various shapes of plastic products, and is the main molding equipment. Divided into vertical, horizontal and full electric. Injection molding machines heat the plastic and apply high pressure to the molten plastic to inject and fill the cavity. Injection molding machines are used to make plastics for countless things we use every day. If you’re using a cell phone, laptop, keyboard, headphones, or anything else made of plastic, chances are the plastic case was produced in an injection molding machine.

The difference between normal injection molding machine and servo injection molding machine

The biggest difference between the two is that the motor (also called a motor), that is, the driving method is different.

● Ordinary injection molding machine: continuous operation, even if the machine stops, the motor is still running.

● Servo Injection Molding Machine: Each different action will be powered with corresponding power, and since the machine is not moving, the servo motor will come to a complete stop.

In servo injection molding machines, servo motors replace ordinary alternating current motors (AC). Since the servo motor itself is a closed-loop control system, it can provide corresponding torque according to the change of pressure value to realize control. Servo motors can be used for all drives of the machine, such as pump motors and injection drives.

Common injection machines have the speed and power to use AC motors (running at one fixed speed) and various types of pumps. While they’re still cheaper than servo motors or all electric, they draw a lot of power so are more expensive to run. Ordinary injection molding machines can modify the variable speed control of the motor, thereby improving energy efficiency. Servo motors have many advantages over normal AC motors. They can be controlled more precisely, use less power, weigh less, and are comparable. On the other hand, their cost is quite high.

Advantages of Servo Injection Molding Machine

Now, servo injection machines have been widely accepted by users, and their uses are becoming more and more extensive. Servo motors have many advantages:

● Fast pressure response, quick start to 0.05 seconds

● Compared with traditional injection molding machines, the system response speed is 2-3 times that of traditional machines.

● The operation speed is fast and accurate, which greatly improves or improves the production environment and production efficiency.

●The accuracy of repeated products can be increased to more than five thousandths, which meets the requirements of ultra-precision injection molding.

● The servo motor obtains the signal, and then fills the hydraulic oil, which generates less heat, and the temperature of the hydraulic oil is lower, saving a lot of cooling water.

● Fast response, short cycle time, improve production efficiency.

● Servo injection machine can save 50-80% of electricity.

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