Detailed Introduction

This mold core plate features a symmetrical dual-cavity layout with one integrated central insert block containing two independent forming cavities, which form the complete outline and internal micro pin slots of tiny multi-pin connectors. The split insert design allows local worn pin cores to be replaced separately without replacing the whole plate, greatly reducing mold maintenance cost and downtime.

Four oversized multi-stage guide posts are installed at four corners to realize high-rigidity repeated mold closing, effectively preventing flash and dimensional offset under high injection pressure. Bilateral slide positioning stoppers are mounted on the left and right sides of the plate, used to limit the travel of lateral slide cores for connector undercut buckling structures, ensuring stable and smooth core pulling action during automated production.

The full ultra-precision manufacturing workflow complies with electronic precision molding standards: intricate micro pin slot contours inside each cavity are processed by micro sinker EDM and wire EDM to guarantee consistent pin pitch and dimensional accuracy; mold steel undergoes vacuum quenching & tempering heat treatment to improve hardness and wear resistance against glass-filled PBT, PA66 and LCP flame-retardant engineering plastics; multi-stage mirror polishing removes micro burrs around tiny cavities for smooth, scratch-free demolding of ultra-thin connector parts. Optional PVD hard coating can be applied to cavity surfaces to extend mold service life for long-term continuous production.

All inserts, guide sleeves and positioning blocks pass full CMM coordinate measurement inspection before assembly to strictly control cavity flatness, pin concentricity and slide matching clearance. We fully support custom development based on customer 2D/3D engineering drawings or physical connector samples. Cavity size, pin density, slide stroke and surface treatment can be adjusted according to daily production volume, plastic material and service life requirements, meeting high-precision mass production demands of miniature multi-pin electronic connectors.

Specification Table