Detailed Introduction

This automotive multi-pin connector injection mold is designed for multi-terminal wire harness plug housings. The mold core features a symmetrical 4-cavity layout with independent runner paths for each cavity, ensuring uniform plastic melt filling to eliminate short shots, warpage and inconsistent dimensional deviation during continuous mass production. The finished black plastic connector parts feature dense multi-pin terminal positioning slots that meet automotive electrical assembly standards for reliable plug-and-lock performance.

The full mold manufacturing process adheres to strict precision machining standards: intricate pin slot cavity contours are processed via 5-axis CNC and micro sinker EDM; mold steel undergoes vacuum heat treatment to boost hardness and wear resistance; ultra-precision grinding and mirror polishing remove tiny surface burrs for smooth demolding. Optional nitriding or PVD coating can be applied to cavity surfaces to resist corrosion from glass-filled PA66, PA12 and other automotive engineering plastics.

All mold components pass full CMM coordinate measurement before assembly to strictly control cavity depth, pin hole position and parting line geometric tolerances. We support full custom development based on customer 2D/3D engineering drawings or physical connector samples. Cavity count, mold steel grade, surface treatment and ejection structures can be adjusted according to daily production volume, plastic material and service life requirements, satisfying high-precision mass production demands for automotive wiring connector housings.

Specification Table