Aluminum alloy material is the most commonly used material for making product molds in Hiner-pack, at the same time, it is also a kind of price and nature of stable characteristics.
It has the following advantages:
1. low density and high strength: the density of aluminum alloy is only about one-third of that of steel, which makes the weight of the aluminum alloy molds lighter, and it is easy to be installed and operated.
2. good heat conduction: the heat conduction coefficient of the aluminum alloy is 4-5 times than that of the steel, which is conducive to the Rapid temperature rise and fall.
This can improve the injection efficiency, shorten the injection cycle and increase the production speed.
3: Heat resistance: aluminum alloy mold can withstand high injection temperature, generally up to 300°C or more. This is very suitable for some engineering plastics with high melting point.
Report on the combination of aluminum alloy molds and plastic injection molding processes:
1. Product design and modeling:
Use CAD software to design the required plastic products.
Consider the product structure, size, process requirements and other factors, optimize the design.
Generate 3D model files that meet the injection molding requirements.
Mold design and manufacturing.
2. According to the product design:
Use CAD/CAM software to design the injection mold.
Select high-temperature and wear-resistant aluminum alloy material to make the main body of the mold.
Precision machining of all parts of the mold to ensure dimensional accuracy and surface quality.
Assemble the mold, and carry out trial debugging to ensure that the performance of the mold meets the requirements.
3. Injection molding process design:
According to the characteristics of the selected plastic raw materials, determine the appropriate injection molding process parameters.
Parameters include injection pressure, temperature, holding time, cooling time and so on.
Use simulation software to simulate and analyze the injection molding process to optimize the process.
Raw material preparation.
4. Select suitable plastic raw materials:
Such as MPPO, ABS, PP, PPE and so on.
Dry the raw materials to remove water and other impurities.
According to the requirements of product design, mix the raw material ratio.
5. Injection molding:
Pre-heated molten plastic raw materials into the injection molding machine equipped with aluminum alloy mold.
The raw material is injected into the mold cavity under high pressure to complete the product molding.
After the mold cools down, open the mold and take out the finished product for preliminary inspection.
6. Post-processing and quality control:
Trimming, deburring and other post-processing of molded products.
Test the product size, appearance, mechanical properties and other indicators to ensure that the quality is qualified.
Establish a perfect quality management system and continuously optimize the production process.
Install high-precision dimensional measuring equipment and appearance inspection cameras on the production line.
The system can detect the product size, appearance defects and other indicators in real time, and automatically determine the qualified products.
Timely detection of problems, shorten the repair cycle, improve the product passing rate.
Reduce the intensity of manual testing and testing errors.