Engineering and Design Process for Plastic Injection Moulds

Engineering and Design Process for Plastic Injection Moulds at Hanoi Mould Technology follows a precise and systematic workflow to ensure every mold meets international standards of quality and durability. At Hanoi Mould Technology, we follow a precise and systematic process to ensure every mould meets international standards of quality, accuracy, and durability. Our engineering and manufacturing workflow integrates modern CAD/CAM/CAE systems and decades of technical expertise.

Step 1: Product Data and DFM Analysis

The process begins with receiving 3D product files and technical requirements from customers.
Our engineers perform DFM (Design for Manufacturability) to identify potential issues such as:

* Wall thickness imbalance

* Undercuts or sharp corners

* Improper draft angles

* Risk of sink marks or flow hesitation

After DFM approval, we finalize the mold layout and design concept to ensure smooth production and cost optimization.

Step 2: 3D Mold Design

Using advanced CAD software (Creo, NX, SolidWorks), our designers create a complete 3D mold structure, including:

* Mold base selection (LKM, HASCO, DME, FUTABA…)

* Cavity & core design

* Cooling system, gate, runner, and ejection system

* Mold opening direction, lifters, and sliders

Every detail is carefully checked to guarantee the mold operates efficiently, reduces cycle time, and ensures part quality.

Step 3: Mold Flow and Structural Simulation

Before manufacturing, Moldflow and stress analysis are conducted to simulate plastic flow, cooling, and filling balance.
This ensures:

* Proper gate position and runner size

* Stable temperature distribution

* Minimum warpage and shrinkage

* Simulation helps detect issues early and shorten the trial cycle later.

Step 4: CNC Machining and EDM Processing

After design approval, we move to the manufacturing stage.

* High-speed CNC milling machines produce precision cores, cavities, and plates.

* Wire-Cut EDM (WC-EDM) and Sinking EDM create complex shapes and tight-tolerance details.

* All parts are inspected with CMM measurement to ensure accuracy within ±0.005 mm.

Step 5: Polishing, Assembly, and Trial

Once machining is complete, components are polished, heat-treated, and assembled by skilled technicians.
We perform T0/T1 mold trials on our injection machines to test:

* Part dimension and appearance

* Cooling and ejection performance

* Cycle time and stability

Feedback from the trial is analyzed, and adjustments are made before shipment.

Step 6: Final Inspection and Delivery

Every mold undergoes final QC inspection, including hardness, fitment, and documentation.
Molds are packed on wooden pallets, protected with anti-rust coating and vacuum-sealed film, ensuring safe transport worldwide.

💡 Why Choose Hanoi Mould

* Over 19 years of experience in mold design & manufacturing

* Full in-house machining with modern CNC, EDM, and CMM systems

* Strong DFM support and 3D mold automation workflow

* Proven export record to Germany, USA, Japan, and Europe

📍 HA NOI MOULD TECHNOLOGY COMPANY LIMITED
Lai Xa Industrial Park, Kim Chung, Hoai Duc, Ha Noi, Viet Nam
📧 lehung@hanoimould.com | 🌐 www.hanoimould.com