A servo injection molding machine is a device that uses a servo drive system to achieve efficient injection molding. Servo injection molding machines are widely used in modern manufacturing industries. It can be used to produce various plastic products, such as daily necessities, electronic product casings, auto parts, etc. In addition, servo injection molding machines can also be used in high-demand fields such as medical devices and aerospace. So how much do you know about servo injection molding machines? Today I will tell you how to choose a servo injection molding machine.
How to Choose a Servo Injection Molding Machine
What Factors Should Be Considered When Purchasing a Servo Injection Molding Machine?
When choosing a servo injection molding machine, focus on the following 6 items.
- What is the production volume?
- What shape does it be made?
- What materials do you use?
- What kind of servo system?
- How is the motor and oil pump linking?
- What is the operating efficiency of the machine?
(1) What is the output?
First, let's get a rough estimate of the output you're considering.
Depending on the manufacturer's structure, there are companies that are good at small-scale production and companies that are good at large-scale production. If you are considering mass production, consider automation.
To make a rough estimate, first create a production plan and then work backwards from the target to produce the volume.
Depending on the situation, complex calculations may be required, so coordination is required if there is a person responsible for production.
For example, a servo plastic injection molding machine can produce approximately 100 products in an hour (as a guide for small and medium-sized injection molding machines). So if it's hundreds of levels, the lot number will be quite small from a manufacturer's perspective.
(2) What shape should it take?
The shape of the product produced determines to some extent the molding method (clamping force and mold size). If the product shape you are considering is not hollow or elongated, injection molding is the best option.
Among them, for example, when making extremely small molded products, a small "injection molding machine" can fully play its role. When molding optical discs such as recording media, an "optical disc dedicated injection molding machine" is required. When making cosmetic or beverage bottles, you need an "injection blow molding machine" that extracts air from the inside.
Basically, by changing the mold, you can adapt to a variety of shapes. However, depending on the shape, a special injection molding machine may be required, so you need to check in advance whether the shape of the product is compatible.
(3) What materials will be used?
When choosing a servo injection molding machine, you must consider the materials used, your budget, and the intended use of the product.
For example, thermoplastic elastomers, which have been frequently used in recent years, have extremely wide uses. On the other hand, quality control is different from other materials, making it somewhat special. Therefore, it is necessary to choose a manufacturer with a track record of material management.
(4) What kind of servo system?
First, you should choose a servo system with higher power and torque, which will directly affect the overload capability during high-pressure operations. You can test the extreme performance of the machine through physical objects, such as: using the highest pressure for a long time, and testing after multiple cycles. The status of the servo injection molding machine; at present, the magnets of the servo injection molding machine are divided into M, S, H, and SH grades. SH is the highest grade and has the largest magnetic flux. High torque output has more advantages and its overload capacity is good; avoid using The cheaper servo system, because when the servo system is overloaded for a long time, the servo injection molding machine is prone to demagnetization, resulting in a decrease in the power of the machine;
(5) How is the motor and oil pump linking?
Pay attention to the connection method between the motor and the oil pump, and whether reliable coupling and bracket structures are used, because the servo injection molding machine will frequently accelerate, decelerate, brake, and reverse during operation, and all within dozens of milliseconds. Complete, this will affect the axial concentricity and buffering during the driving process, and hence affect the service life of the motor bearings and oil pump;
(6) What is the operating efficiency of the machine?
Pay attention to data such as oil pump displacement and rotational speed that affect the operating efficiency of the machine. At the same rotational speed, the greater the oil pump displacement, the higher the operating efficiency of the machine. When selecting the oil pump displacement, the maximum flow output requirement and rotational speed should be considered. relationship, on the premise of ensuring the highest flow output requirement, it is recommended that the speed be designed within a reasonable safety range to ensure the reliability and service life of the servo drive system. The low speed design also brings faster response speed, but this will Increase the cost of the machine.
Basic Knowledge of Servo Injection Molding Machine
What Is a Servo Injection Molding Machine?
Servo injection molding machine, also called servo motor driven injection molding machine, is a modern molding equipment that uses a servo motor system to drive the injection molding machine to complete various operations.
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 changes in pressure value to achieve control. Servo motors can be used in all drives of a machine, such as pump motors and injection drives.
Compared with traditional drive injection molding machines, servo injection molding machines are more energy-saving, more precise, and reduce energy consumption.
What Are the Most Important Components of a Servo Injection Molding Machine?
1. Servo motor
2. Encoder
3. Gear pump
4. Servo driver
5. Pressure sensor
6. Drive control module
How Does a Servo Injection Molding Machine Work?
Servo injection molding machines achieve high-precision injection molding by using a servo drive system. The system uses high-precision servo motors and feedback sensors to achieve high-precision control of parameters such as pressure, speed and temperature during the injection molding process, thereby making the injection molding process more accurate, stable and efficient.
Servo injection molding machines play an important role in modern production. It can greatly improve production efficiency and quality, and has an extremely high degree of automation and flexibility. In addition, servo injection molding machines can also save energy, reduce emissions, and reduce production costs.
What Are the Characteristics of Servo Injection Molding Machine?
1. Currently, all-electric injection molding machines use servo motors to realize opening and closing of molds, ejection and demoulding, raw material injection and storage, etc.
2. The operation speed is fast and precise, which greatly improves the production environment and production efficiency.
3. The response speed can reach 0.03ms, which is much larger than the 0.3ms response speed of the variable pump, thus significantly improving the control accuracy.
Why Should We Modify the Servo Motor System of the Injection Molding Machine?
In the cost of injection molding products, electricity accounts for a considerable proportion of the injection molding machine. According to the needs of the injection molding machine equipment technology, the power consumption of the traditional injection molding oil pump motor accounts for up to 80%-90% of the power consumption of the entire equipment;
As energy issues become more and more important, the world is vigorously developing energy-saving and emission-reduction policies. It is a trend to develop a new generation of injection molding machines with servo motors. It is imperative to transform traditional injection molding machines into servo motor energy-saving systems.
What Are the Benefits of Servo Injection Molding Machine?
1. Faster response and higher accuracy. The servo motor of the servo energy-saving injection molding machine only takes 30ms from standstill to the rated speed. The repeatability of low pressure and low flow is ±0.5%, while avoiding the hysteresis of the variable frequency motor. Compared with traditional injection molding machines, the speed response of its pressure flow is only about 0.03s, which not only significantly improves the repeat accuracy, but also allows the position accuracy to be within 0.1mm.
2. The molding cycle is shorter and the efficiency is higher. Due to the use of servo motors, the start and stop of each action of the injection molding machine takes less time, and the elimination of the proportional valve reduces hydraulic leakage and makes the speed faster.
3. The energy consumption of the motor is lower. Compared with the efficiency of about 80% of traditional asynchronous motors, the efficiency of the servo motor of this device can reach more than 90% with the same power, saving more energy.
4. When a traditional motor starts, its current is 5 times that of normal operation, while the servo energy-saving injection molding machine adopts soft start mode, which will not cause impact on the power grid.
5. Save water and fuel. The system is highly efficient and can effectively avoid oil temperature rise. The capacity of water cooling is reduced and the temperature rise is reduced, thus reducing the replacement rate of hydraulic oil. Through a follow-up investigation of some pipe fitting manufacturers, it was found that the equipment only needs cooling water for 10 to 20 days in hot summer a year, and the amount of cooling water used is only 1/3 of a traditional injection molding machine.
6. Lower noise. The main source of noise in servo injection molding machines is the power system. The power system composed of servo motors and gear pumps has very low noise due to its working characteristics, so that the injection molding machine equipped with this system also has very low noise.
What Are the Disadvantages of Servo Injection Molding Machines?
Here are some potential disadvantages of servo injection molding machines:
1. Higher initial cost
2. Increased machine complexity
3. May require more frequent maintenance
4. Sensitive to environmental factors of use
How Do Servo Plastic Molding Machines Compare to Ordinary Plastic Molding Machines?
| Aspect | Servo Plastic Molding Machines | Ordinary Plastic Molding Machines |
| Energy Efficiency | High efficiency with servo motors | Less efficient with continuous hydraulic operation |
| Precision and Control | Precise control with servo motors and closed-loop systems | Variable control with open-loop systems |
| Speed and Acceleration | Fast response and high acceleration rates | Slower response and lower acceleration rates |
| Noise Level | Operates quietly | Can be noisy due to hydraulic operation |
| Maintenance | Generally requires less maintenance | May require more maintenance due to hydraulic complexity |
| Versatility | Offers greater flexibility in adjusting process parameters | May have limitations in adjustability and versatility |
Why Import Servo Injection Molding Machine Manufacturing Equipment from China?
China is the country that exports the most servo injection molding machines. You should consider importing servo motor injection molding machines from China for the following reasons.
High quality machines
You will get a high-quality servo injection molding machine made with high-quality materials from China.
Low machine cost
Purchasing an injection molding machine from China can significantly reduce costs and properly guarantee your return on investment.
Favorable shipping costs
You will also get proper transportation services at affordable prices.
Reliable manufacturer
Chinese manufacturers keep their word and will make everything that matches the value of your investment.
Reliable transportation system
China also has numerous airports and seaports where you can transport your goods easily.
What Technologies Are Used in Servo Injection Molding Machines?
Servo injection molding machines use a variety of technologies to improve the efficiency, precision and control of the injection molding process during the production of plastic products. Some of the key technologies used in servo injection molding machines include:
- Servo motor system
- Variable Frequency Drive (VFD)
- Closed loop control system
- Digital control interface
- Energy recovery system
- Precision linear guide
- Advanced mold cooling system
Which Verification Documents Do You Need for Servo Plastic Molding Machine?
When purchasing servo plastic molding machine, you must verify that it is working properly.
The best way to verify that the servo plastic molding machine is working well is by performing tests.
After the tests, you will receive the following verification documents.
Factory Assessment Test (FAT) Verification Document
You will receive a FAT verification document after successful testing of the machines at factory level.
Installation Qualification Verification Documents
After complete installation, you will perform an installation qualification test to determine it work well.
You will receive an installation qualification verification document as proof.
Operational Qualification Verification Documents
You will receive this document after performing a complete operational test on the machine.
Conclusion
Before buying a servo injection molding machine, it is best to know the detailed information. If you are interested in buying a servo injection molding machine, then I recommend Sunbun Machine products to you.
Zhejiang Sunbun Intelligent Equipment Co., Ltd. (Sunbun Machine) is a subsidiary of Shunbang Group. Founded in 1993, Xinbang Machinery is mainly engaged in the R&D, manufacturing and sales of automated intelligent equipment and injection molding machines. Development After nearly 30 years of development and continuous innovation by professional researchers and technicians, Xinbang Machinery has become a first-class manufacturer of injection molding machines. The servo motor injection molding machine produced by Sunbun has the following advantages:
- Using the most advanced dual CPU control technology
- 100 MCAN digital communication to control the movement of the machine, with higher control accuracy and faster response speed
- Equipped with high-end new servo motors. With high torque. Low noise and longer durability
- High-response closed-loop control mode makes the system pressure and flow stable and accurate
- Output the corresponding power according to the system load. This is more energy efficient. The oil temperature is low. To
- Reduce the use of cooling water. Improve the service life of hydraulic oil and hydraulic parts, increase repeatability
Sunbun Machine provides the best injection molding machines and becomes your trusted partner.
Contact us now to get the most detailed quotation and consultation.