What are the key points of designing liquid silicone injection molds?

The design of liquid silicone (LSR) injection molds is a professional and meticulous process that involves multiple key points to ensure the performance of the mold and the final quality of the product. The following are some important considerations for the design of liquid silicone injection molds:
Material selection: Ensure that the mold material can withstand the high temperature and chemical properties of liquid silicone, usually choosing corrosion-resistant and high-temperature resistant steel.
Mold temperature control: Accurate control of mold temperature is required during the liquid silicone injection molding process to ensure product curing and performance.
Injection system design: Design a reasonable injection system to ensure that silicone can be evenly and smoothly filled into the mold, avoiding bubbles and material waste.

Exhaust system: Design an effective exhaust system to remove air from the mold and gases in the silicone, preventing product defects.
Cooling system: Reasonable cooling system design ensures that the mold can cool quickly to accelerate the production cycle.
Mold sealing: Liquid silicone has fluidity at high temperatures, and the mold needs to have good sealing performance to prevent material leakage.
Classification line and ejector mechanism: Reasonably design the classification line and ejector mechanism to ensure that the product can be smoothly demolded without damaging the surface of the product.
Mold accuracy: The accuracy of the mold directly affects the quality of the product, and it is necessary to strictly control the manufacturing and processing accuracy of the mold.
Mold strength and durability: The mold needs to have sufficient strength and durability to withstand long-term production loads.
Product demolding design: Design a product structure that is easy to demold, which may require the use of ejector pins, sliders, or other mechanisms to assist in demolding.Mold maintenance: Considering the long-term maintenance and cleaning of the mold, the design should be easy to disassemble and clean.
Safety: The design should take into account the safety of operators and avoid potential hazards caused by high temperatures and pressures.
Cost effectiveness: While meeting technical requirements, consider the cost-effectiveness of molds to achieve large-scale economic production.
Environmental factors: Consider the impact of molds on the environment, such as using recyclable materials and reducing waste in the production process.
Sustainability: Consider the long-term use and sustainability of the mold during design, including material selection and energy efficiency.