The process of plastic mold production generally includes the following steps:
Design
- Product Design: Designers use 3D design software to create a detailed model of the plastic product, determining its shape, size, structure, etc.
- Mold Design: Mold designers design the mold structure based on the product model, considering factors like parting surface, gating system, ejection mechanism, and cooling channels.
Material Selection
- Plastic Resin: Select appropriate plastic resins according to product requirements, considering aspects like mechanical properties, thermal stability, and processability.
- Mold Material: Commonly used mold materials are alloy steel and carbon steel. The selection depends on factors like mold complexity, production volume, and precision requirements.
Mold Manufacturing
- Machining: Use CNC machining centers, EDM machines and other equipment to machine the mold parts to achieve the required shape and precision.
- Heat Treatment: Improve the hardness, strength and wear resistance of mold parts through heat treatment processes like quenching and tempering.
- Surface Treatment: Perform surface treatment such as electroplating and nitriding on the mold surface to improve its corrosion resistance and release performance.
Assembly and Debugging
- Assembly: Assemble various mold parts according to the design requirements, ensuring accurate installation positions and tight connections.
- Debugging: Install the mold on the injection molding machine, adjust parameters like injection pressure, temperature, and cooling time. Test-run the mold to check for issues and make adjustments.
Quality Inspection
- Dimensional Inspection: Use measuring tools like calipers and coordinate measuring machines to check the dimensions of the mold and product samples to ensure they meet design requirements.
- Appearance Inspection: Visually check the appearance of the mold and products for defects like scratches, burrs and deformation.
- Performance Testing: Conduct performance tests on the products, such as strength tests and leakage tests, to ensure they meet the use requirements.
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