Detailed Introduction

This liquid silicone injection mold is specially developed for transparent LSR straight tube connectors matched with respiratory nebulizer hoses, fully adjusted for LSR’s soft elasticity, high transparency and medical biocompatibility to eliminate core LSR molding defects including thin tube wall shrinkage, connector weld lines and surface tiny air bubbles.

The split fixed & moving mold adopts symmetrical multi-row interchangeable cavity layout to mass produce the straight through tube connectors shown in the picture, which serve as the connecting transition fittings for nebulizer transparent silicone hoses. Each thin-walled tubular connector cavity is an independent embedded insert for quick disassembly, specification replacement and deep residue-free cleaning. All molding surfaces adopt multi-stage particle-free high-gloss polishing optimized for LSR high-temperature vulcanization characteristics, effectively reducing flow streaks and internal pipeline burrs, realizing flash-free finished products without secondary trimming.

Independent distributed cooling channels are laid around the tubular cavity to stably control mold temperature during continuous LSR curing molding, effectively restraining thin pipe wall uneven shrinkage and circular joint deformation. Built-in precision interlock slide locking blocks maintain stable clamping force under long-cycle Class 100 cleanroom mass production, avoiding micro flash on thin tube edges that may scratch medical silicone hoses, 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 thin tubular connector 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 tubular inner wall and outer positioning boss contours
5. Multi-stage high-temperature resistant high-gloss polishing optimized for transparent medical LSR
6. Optional anti-particle anti-corrosion surface coating compatible with medical biocompatible LSR raw materials

All mold core, cavity and structural components complete full 3D coordinate measuring inspection to meet strict wearable respiratory medical device drawing tolerance standards. Full customization is available based on LSR nebulizer tube joint samples: cavity quantity, mold steel grade, cooling circuit layout and polishing finish can be adjusted according to medical LSR biocompatibility grade, inhalation equipment cleanroom requirements and daily production capacity. The symmetrical multi-cavity layout greatly improves molding efficiency while unifying tube joint circularity, pipeline transparency and hose connection interchangeability of all LSR nebulizer connecting tube fittings.

Specification Table