about us

Ningbo SuRui Machinery Co.,ltd Established in 2006, Located in Ningbo City, the famous harbour city in china. Specializes in plastic injection molding machine  manufacture, Research & Development. After above 12 years develop, Our Company has professional employees, such as trained labours in manufacture line, experienced Engineer team & high educated sales and plastic machinery service team. mainly produce High speed injection molding machines with the clamping force from 100 T to 2500 T. Own brand THREEPLAST plastic products making machine, Plastic molding machine more and more popular in domestic and abroad market, Especially in USA, Middle-east Countries. THREEPLST Machine has become the preferred brand in the household industry, PET perform , Servo injection moulding , pvc injection moulding industry, Toy & electronic product industry Etc. Explore Threeplast's leading high-precision version manufacturers of used & new injection molding machines. Our wide selection of plastics processing technologies includes household plastic products making machine, small plastic injection molding machines and etc all focused on top quality performance at affordable prices. Looking for a plastic IMM injection molding machines supplier, Get a quote now.

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An injection molding machine (also spelled as injection moulding machine in BrE), Usually also called plastic injection machine, plastic molding machine, plastic Injection molding, injection press, is a machine for manufacturing plastic products by the injection molding process. It consists of two main parts, an injection unit and a clamping unit.

Injection molding machine molds can be fastened in either a horizontal or vertical position. The majority of machines are horizontally oriented, but vertical machines are used in some niche applications such as insert molding, allowing the machine to take advantage of gravity. Some vertical machines also do not require the mold to be fastened. There are many ways to fasten the tools to the platens, the most common being manual clamps (both halves are bolted to the platens); however, hydraulic clamps (chocks are used to hold the tool in place) and magnetic clamps are also used. The magnetic and hydraulic clamps are used where fast tool changes are required.

The person designing the mold chooses whether the mold uses a cold runner system or a hot runner system to carry the plastic and fillers from the injection unit to the cavities. A cold runner is a simple channel carved into the mold. The plastic that fills the mold cold runner cools as the part cools and is then ejected with the part as a sprue. A hot runner system is more complicated, often using cartridge heaters to keep the plastic in the runners hot as the part cools. After the part is ejected, the plastic remaining in a hot runner is injected into the next part.


Types of injection molding machines

Machines are classified primarily by the type of driving systems they use: hydraulic, mechanical, electrical, or hybrid

Main components of injection molding machine

Injection unit

Consists of three main components:

 1.Screw motor drive

 2. Reciprocating screw and barrel

 3. Heaters, Thermocouple, Ring plunger


Clamping unit

Consists of three main components:


 2.Clamping motor drive

 3.Tie bars, the sender is clamped onto the edge of a workbench


Ningo SuRui Machinery Co., Ltd is one of the top Professional plastic injection molding machine manufacturers in China, has specialized of High precision injection molding machine, Servo motor energy saving injection molding machine, Servo motor energy saving injection molding machine, PET Preform molding machine, PVC,PPR Fittings Injection moulding machine , Bakelite injection molding machine,. and also provide customized machine service . THREEPLAST Machinery, a China injection molding machine factory provides Injection machine that has been widely used in different field, such as Household Appliance, Household commodity, Toy, Electric items, automobile parts / Automotive parts/ car parts, Stationery accessories etc production and other plastic products making machine. Ask us for injection molding machine price quotes, and choose the one you need for your business.

Acquire the Best Household Plastic Products Making Machine from Us

Plastics are now used in many areas – from household products, automobile parts, plastic toys, and even automobile parts. However, from PET preforms to plastic toys, you need the best-quality and easy-to-use Household plastic products making machine for their manufacture. At the Ningbo SURUI Machinery Co, we have been dealing with plastic product manufacturing machines, Plastic injection machines since 2006. Our company specializes in high-tech research and development and the manufacture of Injection molding machines for sale.

What we deliver

Our company has a customized, unique, and most effective standard operating protocol for manufacturing plastic injection moulding machines. We have been developing these procedures for over a decade and have incorporated our experiences in every machine we produce – making them the best in the market. The following factors make our concern one of the best Plastic injection molding machine manufacturers in the world:

  • Every employee in every department is a professional in the labor department, engineering section, or the plastic machinery service team. Our engineers are highly educated and have gained years of practical experience whereas our sales team is always ready to provide you with the best possible deals.
  • We have world-class and the most sophisticated machinery to manufacture high-precision injection molding machines with camping forces ranging from 100 T to 2500 T.
  • Our wide variety of instruments range from heavy-duty plastic injection moulding machines to simple household plastic product manufacturing machines. Therefore, the clients can get every required product from our vast collection.
  • Our products are hugely popular in overseas markets, especially in the USA and the Middle East. We provide top-performing high-precision plastic injection molding machines at affordable prices worldwide. Our excellent products and associated services are why we are considered among the most recommended Plastic Injection molding machine suppliers in the world.

Why should you choose us?

We have been working in this circuit for more than a decade, and in this time, have amassed a loyal domestic and foreign client list. From solving the instrument problems of the client to providing them with the most appropriate accessories – we were always there for our clients. Gradually, we developed our core technology for high–quality machine manufacturing, which also provided the utmost safety for the users. If you are searching for Injection molding machine for sale, then you may contact us. Here are the reasons you should get your China injection molding machine factory material from us:

  • We have experienced staff who have been working for more than 15 years in this field. We keep constant communication within the departments and customers to improve design and installation.
  • We simulate the working of the total machine parts and optimize the function of even the smallest components to ensure optimum precision during our installations.
  • We have Injection molding machine for sale and we have service networks in Asia, Africa, North America, and Europe –ensuring the fastest local service for our customers.

So, if you wish to acquire the best instrument for your business and looking for the best Injection molding machine supplier, ask us for High precision injection molding machine price quotes, and choose the one you need!