High Precision HSS Syringe Mold Core Tin Coated For Laboratory Pipette Tip Injection Molding Components

Our mold core retainer plate is manufactured from high-quality alloy mold steel, typically left in a soft state to prevent distortion during the hardening process. The plate features precisely drilled water lines with tapped inlets and outlets for pipe fittings, along with eight retainer screw taps for secure mounting.

Hardened and ground guide pin bushings with retaining shoulders are mounted in the plate, which is ground to match cavity block thickness. A relief is turned outside the area required for closing off runners and landing ejector return pins, maximizing unit pressure to hold the mold securely closed.

The center of the plate includes a bored hole for the sprue bushing and an undercut cold slug and sprue ejector pin hole to maintain proper sprue slug retention until mold opening. Additional features include water line drilling, four retainer screw taps for backing plate attachment, and clearance holes for three ejector return pins.

Six runners are strategically cut in the core retainer to ensure optimal material flow, with proper alignment achieved through simultaneous boring of retainer plates for perfect cavity and core alignment.

Senlan Precision Mould Parts Co., Ltd specializes in R&D, design, and manufacturing of precision molds, offering comprehensive one-stop services from product design and mold manufacturing to assembly and mass production solutions. Founded in 2006 and located in Chang'an Town, Dongguan City, we possess core technologies in mold development, design, manufacturing, and injection molding.

Our expertise spans automotive molds, daily necessities molds, household appliances molds, turnover box molds, and tray molds. We provide design recommendations to optimize final product structures and can manufacture molds meeting international standards including HASCO, DME, and Misumi specifications. Through continuous R&D investment and advanced ERP management systems, we maintain strong global competitiveness while serving customers worldwide.