INJECTION TOOLING
With more than 20 years of comprehensive experience and expertise, our professionals provide quality mold manufacturing from concept to completion. With the support of in-house engineers, we leverage our expertise in 2D and 3D mold design. We have comprehensive and authoritative 3D surface processing knowledge, using solid model design, for medical, electronic, cosmetics, automobile, commercial machinery, and other plastic products manufacturing plastic injection mold. CN Mould & Plastic Limited has a team of experienced engineers, which can provide quick turnaround time for any mold maintenance needed.
In addition to traditional machining operations, our workshop is equipped with computer-aided functions, including:
Full set of internal mold structure.
• CNC milling, turning, and high-speed graphite milling.
• CNC countersunk machine, hole elevator, and wire cutting machine.
• CNC programming for computer-aided manufacturing.
• manufacturing mold parts and fixtures for secondary operations.
PROCEDURE IN PLASTIC INJECTION MOLD MAKING
1. Mold Design
The mold design is based on the shape, size, material and property of the injection parts. Choose the proper mold material with good quality and property.
2. CNC Machining
CNC machining is a very important part of mold manufacturing. CNC machining can realize high-precision and high-efficiency parts manufacturing, which is particularly important for mold manufacturing. In CNC machining, milling, cutting, drilling and other processing methods are usually used to manufacture the molds.
3. Precision Grinding
Precision grinding is one of the key steps in mold manufacturing. Precision grinding can help grind the individual parts of the mold and ensure its dimensional accuracy and surface roughness. It also can increase the sealing performance and abrasion resistance, and improve the mold life.
4. Electric Discharge Machining
EDM is an efficient non-contact processing method, which can achieve metal melting and cutting through the discharge phenomenon, and is also very important for mold manufacturing. EDM is usually carried out in the mold parts with high precision requirements.EDM can improve the accuracy and surface finish quality of the mold, and reduce manufacturing and processing costs.
5. Assembly and Mold Testing
After the mold manufacturing is completed, assembly and mold test are required. During assembly process, each parts of the mold should be checked to be accurate and fastening. During commissioning process, it is necessary to carry out injection molding test for testing the performance and reliability of the mold.
MAKE POSSIBLE WITH CN-
Your Professional Plastic Injection Molding Exporter
CN Mould & Plastic Limited has a plant of 10,000 square meters for mold manufacturing and injection molding in Shenzhen and Zhongshan, Guangdong, China. Being an injection mold exporter in the industry for over 20 years and certified by IATF16949, the CN team has developed all different kinds of molds, from rapid prototypes to large-scale production molds like multi-cavity, 2K, liquid silicone rubber, inserting, and our molding press up to 1,000 tons. CN Mould & Plastic Limited utilizes state-of-the-art equipments such as wire-cut, EDMs imported from Switzerland, high-speed CNC machines, CAD/CAM, and milling, drilling, and grinding machines. Our professional group of engineers and plastic injection molding experts have over 15 years in injection molding and mold making industry on average. CN Team can always be your reliable partner to collaborate with and our friendly team is always here to help you turn your concept into a reality.
PLASTIC INJECTION MOLD Application
Injection molds can process a variety of plastic products, such as electronic product shells, toys, household items, auto parts, medical devices and so on. The following are some common injection mold processing products:
Electronic product shell: such as mobile phone, TV, audio and other electronic products shell, using high-strength, durable plastic material injection molding to meet the product appearance and performance requirements.
Toys: Injection molds produce a variety of toys of different shapes, including children's toys, educational toys, sports toys, etc. These toys can be injection molded with different materials, such as PE, PP, etc.
Household items: Injection molds can be used to produce a variety of household goods, such as plastic hangers, plastic buckets, plastic chairs, etc. These products have excellent durability and lightweight, which are very suitable for family use.
Automotive parts: Injection molds can be used to produce auto parts, such as doors, car dashboards, lights, etc. These products need to have high heat resistance, corrosion resistance and toughness to meet the requirements of the automotive working environment.
Medical devices: Injection molds can be used to produce a variety of medical devices, such as medical syringes, medical nonfat yarn, etc., which need to have good biocompatibility and durability to meet the strict requirements of the medical industry.
Plastic Injection Mold Application
Typical Tool Structure
1. Sprue separating area
2. Latch
3. Sprue
4. Retainer pin
5. Head of bolt
6. Sprue-Stripping plate
7. Pin
8. Guide strip
9. Waterway
10. Bolt
11. Main parting line
12. Ejector pin
13. Stripper sleeve
14. Plate assembly
15. Mold cores
Typical Tool Structure
WHAT IS CNC MACHINING
CNC machining is the main production procedure for tool making. Molds are usually machined out of steel and stainless steel, but sometimes aluminum is also used. Aluminum cannot withstand the tear and wear of injection molding as well as steel, but it is a cheap alternative for small-batch injection molded parts.
The core of the tool must be able to keep its precise dimensions and feature over the course of thousands or millions of injection cycles, along with all the stress and heat enforced on them. CNC machining makes forming the metals to the required tolerances simple. At CN Mould & Plastic Limited, CAD/CAM software are implemented to produce sophisticated, perfect tool for designing and machining molds.
WHAT IS ELECTRICAL DISCHARGE MACHINING (EDM)
Electrical Discharge Machining (EDM) is a machining process that utilizes electrical discharges or sparks to remove material from a workpiece. It is commonly used for machining complex shapes and hard materials that are challenging to machine using traditional methods.
The EDM process involves a workpiece and an electrode, typically made of conductive materials such as copper or graphite. The workpiece and the electrode are submerged in a dielectric liquid, which acts as an insulating medium and helps facilitate the discharge process.
When an electric voltage is applied between the electrode and the workpiece, a high-energy electrical discharge occurs in the small gap between them. This discharge creates an intense heat that melts and vaporizes a tiny portion of the workpiece material. The dielectric liquid then flushes away the molten debris, and a new discharge is initiated.
By controlling the electrical parameters such as voltage, current, and pulse duration, as well as the positioning of the electrode, precise material removal can be achieved. The process is typically computer-controlled, allowing for high accuracy and repeatability.
At CN Mould & Plastic Limited, EDM is particularly useful for machining intricate shapes, thin sections, and hardened materials, such as tool steels and exotic alloys. It is commonly employed in industries like aerospace, automotive, mold and die making, and electronics manufacturing.
INJECTION MOLDING MACHINES AT CN AVAILABLE FOR Mold Trial
CN Mould & Plastic Limited owns more than 135 injection molding machines including vertical machines and horizontal machines. In particular, we have a set of vertical injection molding machine with horizontal injection units that suits for insert molding trials. The vertical machine structure allows ease of insert placement.
Features of Injection Molding Machine
1. Vertical clamping; horizontal injection.
2. Strong structure. Clamping force is up to 500 ton.
3. The injection base height is adjustable, leading to more flexibility in mold design.
4. Diversified oil circuit system design(semi-closed, servo or high-speed injection) to meet customers' needs.
Injection Molding Machines at CN Available for Mold Trial