Detailed Introduction

This multi-cavity liquid silicone injection mold is customized for integrated portable nebulizer main shells matched with transparent flip storage covers, fully optimized for LSR’s soft touch, high transparency and medical biocompatibility to eliminate typical LSR molding defects including large cylinder uneven wall shrinkage, flip cover warpage and side nozzle weld lines.

The split fixed-moving two-plate mold adopts symmetrical multi-row cavity layout to produce integrated nebulizer shells shown in the image, composed of main opaque cylindrical body, transparent flip access cover and side gas outlet nozzle. Each large multi-feature cavity is an independent embedded insert for quick disassembly, residue-free deep cleaning and size switching. All molding surfaces undergo multi-stage particle-free high-gloss polishing matched with LSR high-temperature vulcanization characteristics, removing micro burrs and internal fluid dead corners without secondary post-molding trimming.

Independent distributed cooling pipelines are laid around the full contour of the cylindrical shell and thin flip cover to precisely stabilize mold temperature during continuous LSR curing molding, effectively restraining large cylinder axial bending, thin transparent flip cover deformation and side nozzle dimensional deviation. Built-in precision interlock slide locking blocks maintain stable clamping force under long-cycle Class 100 cleanroom mass production, preventing micro flash on thin cover edges and nozzle joints to avoid blocking gas flow, and extending mold service life under cyclic liquid silicone molding.

Complete Precision Machining Workflow

1. 5-axis CNC rough milling for mold base outline and large cylindrical nebulizer shell & flip cover cavity rough forming
2. Vacuum stress relief heat treatment to stabilize steel hardness and reduce thermal deformation under long-run high-temperature LSR curing
3. Precision surface grinding to control mold plate flatness & parallelism within ±0.002mm
4. Sinker EDM & Wire Cut WEDM for ultra-fine side gas nozzle, thin flip cover edge and cylindrical wall contour features
5. Multi-stage high-temperature resistant high-gloss polishing optimized for medical LSR melt fluidity
6. Optional ultra-clean anti-corrosion surface coating compatible with inhalation therapy medical grade LSR raw materials

All mold core, cavity and structural components complete full 3D coordinate measuring inspection to satisfy strict wearable portable respiratory medical device drawing tolerance standards. Full customization is supported based on nebulizer shell samples or engineering drawings: cavity quantity, mold steel grade, cooling circuit layout and polishing grade can be adjusted according to medical LSR purity grade, home medical cleanroom requirements and daily production capacity. The symmetrical multi-cavity layout greatly improves molding efficiency while unifying shell wall thickness consistency, flip cover flatness and gas channel smoothness of portable nebulizer integrated silicone shell assemblies.

Specification Table