Detailed Introduction

This medical multi-cavity injection mold is custom-built for full-series combined minimally invasive biopsy and respiratory therapy plastic consumables, fully optimized for medical certified POM+PA alloy to meet operating room cleanroom biocompatibility standards, effectively eliminating molding residue, thin-wall flash and transparent part haze defects.

The split fixed-moving two-plate mold adopts modular symmetrical multi-row cavity layout to realize simultaneous production of two major categories of medical components shown in the picture:

1. Minimally invasive biopsy series: biopsy gun main housing, split rear shell, graduated measuring forceps, long transmission push rods, threaded drive sleeves and miniature locking pins;
2. Respiratory treatment series: transparent nebulizer mask, atomizer cylinder, curved mask clips, multi-way fluid connectors, sealing rings, air pipelines and micro valve fittings.

Each component cavity is an independent embedded insert for quick disassembly, replacement and deep sanitization cleaning. Cavity surfaces support two molding finishes: ultra-mirror polishing for transparent airflow parts to guarantee high light transmittance, and uniform matte texture etching for surgical instrument shells to hide POM+PA flow lines and uneven gloss.

Independent distributed cooling pipelines are laid out for every single cavity to stabilize mold temperature during continuous POM+PA injection molding, effectively restrain differential shrinkage, slender rod warpage and thin transparent shell deformation. Built-in precision slide interlock locking blocks maintain stable clamping force under long-term cleanroom mass production, preventing flash on tiny thread, micro pin and thin sealing edge structures, and extending mold service life under cyclic medical-grade plastic processing.

Complete Precision Machining Workflow

1. 5-axis CNC rough milling for mold base outline and complex multi-feature mixed cavity rough forming
2. Vacuum stress relief heat treatment to stabilize steel hardness and reduce thermal deformation under long-run medical POM+PA molding
3. Precision surface grinding to control mold plate flatness & parallelism within ±0.002mm
4. Sinker EDM & Wire Cut WEDM for ultra-fine slender drive rod, micro lock pin, curved clip and multi-way connector contours
5. Dual medical surface treatment: multi-stage mirror polishing for transparent parts, uniform texture etching for opaque surgical housings
6. Optional non-toxic anti-corrosion surface coating compatible with medical POM+PA raw materials

All mold core, cavity and structural components complete full 3D coordinate measurement inspection to satisfy strict surgical & respiratory medical device drawing tolerance standards. Full customization is supported based on mixed medical consumable samples or engineering drawings: cavity quantity, mold steel grade, cooling circuit layout and surface finish can be adjusted according to POM+PA medical certification grade, biosafety cleanroom standards and daily production capacity. The modular multi-cavity layout greatly improves molding flexibility while unifying dimensional accuracy, assembly fit tolerance and surface consistency of cross-category disposable medical consumables.

Specification Table