Servo Injection Molding Machine: Buying Guide

If you are considering buying a servo injection molding machine, it will have a very important impact on your business development. So before buying such a machine, you need to consider some basic things. Here you can find the correct guide for purchasing an injection molding machine.

Sometimes you want to buy a servo injection molding machine for a certain job. Buying a machine is not easy. Need to understand key parameters and functions, and obtain bids and quotations from multiple dealers. Let's take a look at what is a servo injection molding machine.

What is a servo injection molding machine

Injection molding machines use a manufacturing process called injection molding. An injection molding machine is usually composed of an injection system, a mold system, a hydraulic drive system, an electrical control system, a lubrication system, a heating and cooling system, and a safety monitoring system. The injection molding machine uses the thrust of the screw (or plunger) to inject the plastic in a well-plasticized and molten state (that is, a viscous state) into a closed cavity, and then solidify and form a product. Then the servo-driven hydraulic machine is an injection molding machine with a servo motor to drive the hydraulic pump.

This machine is characterized by mass production of parts. They are mainly used for mass production, which can be used for repetitive plastic product production. This type of injection molding machine is very cost-effective, and the project can be easily completed using the injection molding machine.

Advantage of servo injection molding machine

Servo injection molding means servo valve control, servo drive or servo motor. Generally, a servo-driven injection molding machine is considered to be a hydraulic machine with a servo motor (adjustable to different speeds) to drive a high-quality, low-noise pump. For larger machines, deploy more servo motors + pump units. Servo motor injection molding machines are close to fully electric to improve energy efficiency, but provide a wider range of performance in terms of speed and power. Therefore, the servo injection molding machine has the following advantages.

• Good clamping force
• Low power consumption
• Faster cycle time
• Clean room forming silent machine
• Amazing position, pressure and speed accuracy

The Benefits of Buying a Chinese Servo Injection Molding Machine

A servo-driven hydraulic machine is an injection molding machine with a servo motor to drive a hydraulic pump. The servo system includes servo motors, servo controllers, and oil pumps. It can save more power when the machine is working. In the industry, saving power means saving more money.

Servo injection molding machine has the following advantages:

• Good clamping force
• Low power consumption
• Faster cycle time
• Clean room forming silent machine
• Amazing position, pressure and speed accuracy

The above advantages make the servo injection molding machine have a very large market. Most Chinese injection molding machine manufacturers have developed or are developing their own servo injection molding machines, which is enough to show that the servo injection molding machine market in China has a bright future.

Recommended reading: 5 reasons to purchase injection molding machines from China

Servo injection molding machine maintenance points

In addition to the inspections before and after daily work, the servo injection molding machine should be regularly inspected. This is very important for the normal use of the injection molding machine and the smooth progress of the work, and it can save a lot of maintenance costs.

Monthly inspection

1. Check the quality of the hydraulic oil and find that the oil contains impurities. If the oil is insufficient or contains water, it must be dealt with in time. Replenish insufficient hydraulic oil.
2. Check whether the circuit of each point is loose.
3. Check the ventilation filter on the electric control box, remove the dirt, and remove it for cleaning if necessary.
4. Clean the hydraulic oil filter.
5. Perform a cleaning treatment on each movable surface (such as the pull rod, the sliding guide surface of the injection seat, etc.), and then recoat with new lubricating oil.

Annual inspection

1. Check the quality of the hydraulic oil. Generally, the hydraulic oil used in the injection molding machine is required to be replaced with a new oil every 1-1.5 years: when the new equipment is used, the hydraulic oil should be discharged from the hydraulic system of the injection molding machine after 3 months of use, and control the various controls in the hydraulic system. Valves, pipelines, and oil tanks are cleaned once (because the worn iron powder and unclean debris in the pipelines are mixed into the oil in the initial stage of the new equipment), the hydraulic oil is filtered (using a 150 mesh filter), and the Join the mailbox.
2. Correct the temperature difference between the thermocouple temperature measuring instrument display and the actual temperature measurement point measured by the thermometer; remove the dirt on the hot spot couple contact point, and correct the correct working temperature measurement position of the thermocouple.
3. Check the firmness of all wire connection points in the control box, check whether the rubber insulation layer of the circuit is aging, prevent leakage, and replace the circuit wire if necessary.
4. Check the mechanical transmission deceleration system, such as the cleaning of the bearing, check the wear condition, and replace the bearing if necessary. Check the wear condition of the gear tooth surface and the quality of the lubricating oil in the reduction box. Make a record.
5. Check the wear of the screw and barrel, refurbish minor wear and scratches, and make repairs when the wear is serious, make a record, and propose a replacement plan.
6. All drive motors, hydraulic pumps, and motors should be disassembled and inspected to check the wear conditions of bearings and pump bodies. After cleaning, add lubricating oil (grease), keep a record of the worn parts, and propose a repair or replacement plan.
7. For some sealing rings. The wearing parts are inspected and replaced if necessary.

Choose the right size of the servo injection molding machine

Before purchasing a servo injection molding machine, you must fully understand the parameters and characteristics of this injection molding machine to meet the requirements of later production and create greater benefits.

Pay attention to the following parameters when buying an injection molding machine, which is suitable for most injection molding machines, and servo injection molding machines are no exception:

• Injection size

  The injection size is best defined as the maximum amount of plastic that the injection molding machine can inject into the molding cavity in a molding cycle. The injection volume of the injection molding machine is very important. You need to choose the best injection molding machine with a suitable injection cavity. Therefore, when you are looking for such a machine, the recommended best practice is to use a plastic molding machine that can produce 30% to 40% larger injection sizes.

• Tonnage

  Tonnage refers to the pressure related to clamping, which is called clamping tonnage. In terms of plastic injection molding equipment, the tonnage is measured by how many tons of downforce the machine can competently press the platen together. These pressure plates are needed to fix the mold cavity and make the plastic injected into the cavity to produce the part.

• Press plate size

  The pressure plate in the injection molding machine is a tool or workbench that helps to effectively fix the mold cavity. The entire structure is separated where the mold is inserted. They are clamped firmly with the pressure plate. Both pressure plates are connected together and bear a lot of pressure. Once the two press plates are combined and kept under tonnage pressure, the plastic is heated, injected under pressure, and then you need to cool the plastic mold and use them for further modifications. Therefore, the size of the platform adds enough pressure to make the parts have the correct shape.

• Tie rod space

  The tie rod spacing is defined as the space between the horizontal tie rods on the injection molding machine. The plastic product manufacturing machine consists of tie rods, which are placed horizontally. Pitch is an important consideration. Basically, the measured value together with the maximum spacing of the platen determines the maximum size of the mold that can be placed in the molding machine, and the spacing of the platen can be set according to the size of the mold to start the molding cycle. In this regard, you can seek expert help, and the manufacturer can help you assemble this type of molding machine.

• Ejector stroke

  The stroke of the ejector in the plastic injection molding machine acts in a pushing manner or ejects the machine to form the final part from the press plate with the help of the ejector pin. If there is no ejection stroke, the machine will stop working, so you must check the stroke of the injector before purchasing the machine.

Precautions for buying a servo injection molding machine

1. The high-power, high-torque servo system should be selected first, which directly affects the overload capacity during high-voltage action, and the ultimate performance of the machine can be tested by physical objects.
2. Pay attention to the connection method of the motor and the oil pump, whether a reliable coupling and bracket structure is adopted, because the servo motor will frequently accelerate, decelerate, brake, and reverse during operation, which affects the driving process. Dozens of milliseconds. Axial concentricity and intermediate buffering affect the service life of motor bearings and oil pumps.
3. Pay attention to the factors that affect the efficiency of the machine, such as the displacement and speed of the oil pump. The greater the displacement of the oil pump at the same speed, the higher the efficiency of the machine. The maximum flow output requirements and speed should be considered when selecting the oil pump displacement. In order to ensure the reliability and service life of the servo drive system, it is recommended to design the speed within a reasonable safety range under the premise of ensuring the highest flow output requirements. The low-speed design also brings faster response speed, but this will increase the cost of the machine, which involves the price positioning of the machine. Both users and machine manufacturers need forward-looking cost allocation.

How to find the best servo injection molding machine for you

It is very important to find a suitable and excellent manufacturer of servo injection molding machines. It affects your business development, including your cost, production efficiency and product quality.

To find a servo injection molding machine manufacturer in China, you can use the following methods:

B2B platform

• Alibaba

  China's largest foreign trade export website, where you can choose servo injection molding machine suppliers and manufacturers in different regions.

• Made in China

  Made-in-China.com specializes in the promotion of Chinese products and only accepts Chinese suppliers to release relevant product information. It is currently the only large-scale B2B platform whose sole mission is to promote Chinese products.

• Global Sources

  Focus on the foreign trade of domestic small and medium-sized enterprises, and provide professional services for foreign buyers.

Google search

Generally speaking, you can search for manufacturers of servo injection molding machine brands through Google. These websites are quite professional. They are more responsive and professional than B2B platforms.

Choose China Servo Injection Molding Machine

Servo injection molding machine competition is fierce. Here, we recommend that you purchase a servo injection molding machine from a Chinese injection molding machine manufacturer. The products produced by Chinese injection molding machine manufacturers have many advantages. We have listed the following five advantages.

1. Abundant and top-notch workforce
2. Young and growing population
3. Always lower cost
4. Infrastructure and geography
5. Stablize

Click to read the article to learn about five reasons to buy injection molding machines from China.

Buy the Best Servo Injection Molding Machine

The above is the buying guide for the servo injection molding machine we brought to you. If you need to buy an injection molding machine, you can use this article to find a suitable partner for you.

At Kebida, high-quality injection molding machines are the core of our production. We have high-level engineers and skilled workers, can provide various specifications of injection molding machines, and accept customization. If you want more information, please click here to view our injection molding machine products and contact us.

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