Detailed Introduction

This two-cavity split mold set is engineered for round multi-pin automotive sensor connectors with circumferential side buckling undercuts. The mold core is arranged with two symmetrical circular cavity inserts, matched with multiple long slide pins on the movable mold plate to form surrounding locking structures of the round connector shell, solving sticking issues of circular curved undercut parts during ejection. Modular split insert design allows separate replacement of worn pin cores and slide blocks, lowering overall mold maintenance cost.

Optimized radial balanced runner layout evenly distributes melt pressure around the circular cavity, eliminating uneven wall thickness, sink marks and warpage on circular thin-wall plastic shells. The full ultra-precision manufacturing workflow complies with automotive industry mold standards: dense micro pin contours inside the circular cavity are processed via micro wire EDM and sinker EDM to guarantee consistent terminal hole spacing; mold steel undergoes vacuum quenching & tempering heat treatment to enhance resistance to high-temperature glass-filled PA66 and PBT flame-retardant plastics; multi-stage mirror polishing removes micro burrs to prevent circuit short risks caused by plastic flash. Optional PVD hard coating can be applied to slide pins and cavity surfaces to extend service life under long cyclic production.

All mold inserts, slide assemblies and mold base pass full CMM coordinate measurement inspection before assembly to strictly control circular cavity roundness, slide matching clearance and parting line flatness. We fully support custom development based on automotive 2D/3D engineering drawings or physical sensor connector samples. Cavity size, pin layout, slide stroke and surface treatment can be adjusted according to vehicle operating temperature, waterproof sealing requirements and service life standards, meeting high-reliability mass production demands of automotive round sensor connectors.

Specification Table