Detailed Introduction

This high-efficiency split mold set features 24 independent circular cavities arranged in two long rows, greatly lifting single-shot production output compared to low-cavity molds. The fixed mold plate is equipped with two complete horizontal slide actuator units at the top, with multiple long slide pins extending into each circular cavity to form circumferential undercut locking structures of cylindrical plastic parts, solving product sticking during ejection. Multiple blue brass cooling connectors are distributed on the side of the fixed mold plate, connected to internal conformal cooling circuits to stabilize mold temperature and control plastic shrinkage, effectively eliminating oval deformation and sink marks on thin-wall cylindrical products.

The movable mold plate adopts a split modular insert layout, where each group of circular cavity inserts can be disassembled and replaced separately to reduce overall mold maintenance costs. A lifting ring is installed on the top center of the moving mold frame for safe hoisting, transportation and installation of the whole mold. Large-diameter guide pin holes are reserved at four corners of the mold plate to realize high-rigidity repeated mold closing, avoiding flash and dimensional offset under high injection pressure.

The full ultra-precision manufacturing workflow complies with mass precision molding standards: inner circular cavity contours are processed via precision circular grinding and micro sinker EDM to guarantee high roundness and concentricity tolerance; mold steel undergoes vacuum quenching & tempering heat treatment to enhance hardness and wear resistance against glass-filled PA66, PBT and PP engineering plastics; multi-stage mirror polishing removes micro burrs inside each cavity to prevent plastic flash defects. Optional PVD hard coating can be applied to cavity surfaces and slide pins to extend mold service life under long-term continuous 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 customer 2D/3D engineering drawings or physical plastic samples. Cavity diameter, cavity quantity, slide stroke, cooling layout and surface treatment can be adjusted according to daily production capacity, plastic material and service life requirements, meeting large-batch precision production demands of miniature cylindrical plastic components.

Specification Table