Detailed Introduction

This medical multi-cavity injection mold is dedicated to laboratory pipette assembly consumables, optimized for medical POM+PA alloy to meet cleanroom biocompatibility standards and eliminate molding residue contamination.

The split fixed-moving two-plate mold adopts symmetrical multi-row cavity layout to boost single-shot output for full pipette components: handheld main housing, PEEK/PA push rods, disposable pipette tips, transmission gears, sealing connectors and limit buckles displayed in the picture. Each component cavity is an independent embedded insert for quick disassembly, replacement and deep cleaning. All molding surfaces receive multi-stage medical mirror polishing to remove micro burrs, flow lines and internal dead spaces, eliminating post-molding secondary finishing.

Independent distributed cooling pipelines are arranged for every cavity to stabilize mold temperature during continuous POM+PA injection, effectively restraining differential shrinkage, long rod warpage and thin-wall deformation. Built-in precision slide locking blocks maintain stable clamping force during long cleanroom production, preventing flash on tiny gear tooth and pipette tip thin-wall structures and extending mold service life.

Complete Precision Machining Workflow

1. 5-axis CNC rough milling for mold base outline and 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 gear tooth, slender push rod and pipette tip thin-wall contours
5. Multi-stage medical mirror polishing to achieve smooth, residue-free cavity surface
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 laboratory medical drawing tolerance standards. Full customization is supported based on pipette samples or engineering drawings: cavity quantity, mold steel grade, cooling layout and polishing grade can be adjusted according to POM+PA medical grade, cleanroom hygiene requirements and daily production capacity. The symmetrical multi-cavity layout greatly improves molding efficiency while unifying dimensional accuracy and surface cleanliness of lab pipette consumables.

Specification Table