1, Mold design review
Mold design is the starting point for manufacturing high-quality injection molds. The main purpose of design review is to ensure that the mold design meets product specifications, while considering production efficiency and cost control. The review content includes but is not limited to:
Product drawing review: Ensure that the mold design strictly follows the size, tolerance, and shape requirements of the product drawing.
Evaluation of parting line and gate design: Check whether the position of the parting line and the design of the gate are reasonable to avoid possible defects during the injection molding process.
Cooling system design evaluation: Evaluate the layout and size of the cooling water channels to ensure effective heat dissipation of the mold and maintain a stable injection temperature.
Mold material selection review: Select suitable mold materials based on product characteristics and production needs to ensure the durability and economy of the mold.
2, Die material inspection
The quality of mold materials directly affects the service life of molds and the surface quality of injection molded products. Therefore, it is crucial to inspect the mold materials. The inspection content includes:
Chemical composition analysis: By using spectral analysis and other methods, check whether the chemical composition of the mold material meets the standard requirements.
Physical performance testing: including hardness testing, tensile strength testing, impact toughness testing, etc., to ensure that the mold material has sufficient strength and toughness.
Heat treatment effect inspection: For mold materials that have undergone heat treatment, it is necessary to inspect whether the hardness and microstructure after heat treatment meet the requirements.
Surface quality inspection: Check the surface of the mold material for defects such as cracks and inclusions to ensure good surface quality of the material.
3, Inspection of mold processing accuracy
The machining accuracy of molds is a key factor determining the precision of injection molded products. Therefore, after the completion of mold manufacturing, it is necessary to inspect the machining accuracy of the mold. The inspection methods include:
3D measurement: using high-precision measuring equipment such as coordinate measuring machines to accurately measure the key dimensions and shapes of molds.
Surface roughness detection: Use a surface roughness meter to detect the surface roughness of the mold cavity to ensure compliance with product requirements.
Position accuracy inspection: Check the position accuracy of various components of the mold, such as parting surfaces, gates, cooling channels, etc., to ensure that the assembled mold accuracy meets production requirements.
4, Mold trial inspection
Trial molding is a crucial step in testing the performance and production capacity of molds. By trial molding, the injection molding effect of the mold can be intuitively evaluated, potential problems can be identified, and adjustments can be made. The trial mold inspection includes:
Appearance inspection of injection molded products: Check the surface smoothness, color uniformity, shrinkage, bubbles and other defects of the injection molded products.
Dimensional accuracy measurement: Use measuring tools to measure the key dimensions of injection molded products to ensure compliance with design requirements.
Mold filling effect evaluation: Observe the mold filling process, evaluate the flowability and filling effect of the plastic melt.
Cooling effect inspection: Check the cooling effect of injection molded products to ensure uniform cooling, no deformation or thermal stress.
5, Mold life assessment
Mold life assessment is an important basis for predicting the service life of molds, developing maintenance plans, and cost control. The evaluation methods include:
Production batch statistics: Record the usage batches of molds during the production process, evaluate the wear resistance and durability of the molds.
Mold wear inspection: Regularly inspect the wear of the mold, including the degree of wear on the mold cavity, parting surface, gate, and other parts.
Maintenance record analysis: Analyze the maintenance records of molds, understand common faults and repair situations of molds, and provide a basis for mold improvement and optimization.
Simulation testing: Using finite element analysis and other simulation software, simulate the stress distribution and thermal deformation of the mold to predict its service life.
