How to adjust the product size of liquid silicone encapsulation parts?
The size adjustment of liquid silicone encapsulated parts is a critical step that involves mold design, material selection, and optimization of production processes. The following are the detailed steps and precautions for adjusting the size of liquid silicone encapsulation parts:
1. Mold design
Mold size: Firstly, ensure that the mold size meets the design requirements. The size of the mold directly affects the size of the final product.
Mold adjustment: If it is necessary to adjust the product size, it can be achieved by adjusting the size of the mold. This may involve redesigning and processing the mold.
2. Material selection
Silicone hardness: Choose the appropriate silicone hardness. Silicone with higher hardness usually has lower shrinkage rate, while silicone with lower hardness has higher shrinkage rate.
Material formula: Adjusting the formula of silicone material, such as adding fillers or changing the proportion of curing agent, can affect the shrinkage rate and flowability of the material.
3. Production process
Injection pressure: Adjust the injection pressure to ensure that the silicone material can fully fill the mold and avoid dimensional deviations caused by insufficient pressure.
Curing temperature and time: Control the curing temperature and time to ensure complete curing of the silicone material and avoid dimensional changes caused by incomplete curing.
Cooling time: Extend the cooling time appropriately to ensure that the silicone material is fully cooled in the mold and reduce shrinkage rate.
4. Dimensional measurement and adjustment
Dimensional measurement: Use high-precision measuring tools such as micrometers or coordinate measuring instruments to regularly measure the dimensions of the product to ensure compliance with design requirements.
Feedback adjustment: Based on the measurement results, adjust the mold, material formula or production process in a timely manner to ensure the stability of product dimensions.
The size adjustment of liquid silicone encapsulation parts req
5. Precautions
Accuracy control: Throughout the entire production process, maintain operational accuracy and consistency to ensure that the dimensions of each product are consistent.
Quality inspection: Regularly conduct quality inspections to ensure that product dimensions meet design requirements and have no obvious defects.
Recording and analysis: Record the process and results of each size adjustment, conduct data analysis, and identify the optimal production parameters.
6. Common problems and solutions
Size deviation: If the product size deviation is significant, check the mold, materials, and production process to identify the problem and make adjustments.
Unstable shrinkage rate: If the shrinkage rate of silicone material is unstable, check the material formula and curing conditions, and adjust if necessary.
Mold wear: If mold wear causes dimensional deviation, repair or replace the mold in a timely manner.
summary
The size adjustment of liquid silicone encapsulated parts is a complex process that involves mold design, material selection, and optimization of production processes. By using the correct operating methods and precautions, the accuracy and stability of product dimensions can be effectively improved.
