Injection mold processing: mold parts
author: Universe plastic
2024-03-02
After completing the design of the injection mold, you need to start processing and manufacturing each injection mold part. Their processing is directly related to the quality of the final mold and is a very important task in the mold manufacturing process.
The manufacturing process requirements, material requirements and steps of each mold part may be different. The following Universe Plastics engineers share their knowledge about the processing of mold parts:
Mold part names and processing
1. Mold base
The mold base is the main component that supports and fixes the mold structure and can provide a stable mold structure.
Material selection: high-quality steel, such as P20, 718H, etc.
Processing steps: Prepare materials—rough machining—heat treatment—finishing—drilling and tapping—surface treatment.
2. Cavity and core
The cavity and core are important parts responsible for filling the molten plastic, and the molded plastic product can be taken out after cooling.
Material selection: H13, S136, SKD61 and other high hardness and wear-resistant steels.
Processing steps: Prepare materials - rough machining - heat treatment - finishing - electric discharge machining - polishing.
3. Cooling structural parts
Injection molds control mold temperature through cooling water channels, and the processing effect of the cooling structure can improve molding efficiency and product quality.
Material selection: copper tube, stainless steel tube.
Processing steps: design cooling water channel - prepare materials - drill and insert cooling pipe - sealing treatment.
4. Casting structural parts
After the injection molding machine injects the molten plastic into the mold, the mold's pouring structure is required to guide the plastic into the cavity, including main channels, runner, gates, etc.
Material selection: same as the mold base material or similar in performance.
Processing steps: Design runners and gates—prepare materials—rough machining—finishing.
5. Eject structural parts
The ejection structure of the mold can push the molded product out of the mold cavity, including ejector pins, push plates, ejection mechanisms and other parts.
Material selection: SKD61, stainless steel and other high-hardness materials.
Processing steps: Preparing materials—rough machining—heat treatment—finishing—assembly and debugging.
6. Slider and inclined roof
Sliders and inclined tops are used in the manufacture of injection molds for complex plastic parts. Because the molding structure is complex, they can assist in the demoulding of injection molded parts.
Material selection: H13 and other wear-resistant steel.
Processing steps: design - material preparation - rough machining - heat treatment - finishing - assembly and debugging
7. Guide posts and guide sleeves
It can ensure the precise alignment of the movable mold and the fixed mold and has a movable guiding function.
Material selection: high-precision alloy steel or stainless steel.
Processing steps: material preparation—rough machining—heat treatment—finishing—assembly and debugging.
Processing technology of plastic mold parts
1. CNC processing technology
CNC machine tools are used to efficiently process mold parts of various complex shapes, supporting rough machining and finishing.
2. Electrical discharge machining (EDM)
Use EDM equipment to process mold parts that require higher precision to improve accuracy.
3. Heat treatment
Through professional heat treatment, material properties such as hardness and wear resistance can be improved.
4. Polishing technology
It can improve the surface finish and precision of mold parts and reduce surface defects of plastic products.
5. Assembly and debugging technology
Through the assembly and debugging of mold parts by engineers, the functionality of mold parts is confirmed.
Summarize
In practical applications, the most appropriate processing methods and equipment need to be selected according to the processing needs of mold parts. Only by ensuring the performance and stability of mold parts, assembly and production can high-quality injection mold manufacturing be completed.
Dongguan Universe Plastic Factory has 15 years of experience in manufacturing injection molds. It has a professional manufacturing team, advanced processing equipment, unique manufacturing technology, and complete after-sales service.
If you are looking for a professional mold manufacturer, please contact us to get the latest service quotation.
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