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Injection Molding

Threaded Industrial Parts | Automatic Unscrewing Tooling

Precision 2-Cavity Injection Mold with Automatic Unscrewing Mechanism | Custom Tooling for Threaded Automotive & Industrial Parts

Specifications

Mold Steel:
1.2344 ESR / S136 (Vacuum Hardened HRC 48-52)
Injection System:
Balanced Hot Runner (Precise Flow Control for Thread Integrity)
Mechanism:
Automatic Hydraulic/Gear Unscrewing System (High-Precision Rotation)
Tolerance:
+/- 0.02mm (Strict Thread Pitch & Concentricity Control)
Surface Finish:
SPI-B1 Semi-Gloss / Technical Matte
Cooling System:
High-Flow Multi-Zone Cooling (Optimized for Rapid Cycle Time)
Quality Control:
1M+ Shots Lifecycle / CPK > 1.67 / Full Thread Gauge Validation

Product Description:

High-efficiency 2-cavity precision tool engineered for technical components requiring internal threads with zero-defect integrity. Features an advanced automatic unscrewing mechanism with synchronized hydraulic/gear drive to ensure rapid cycle times and perfect thread pitch repeatability. Designed for high-volume Tier-1 production, ensuring absolute concentricity and high-pressure sealing performance for industrial and automotive fluid-handling systems.



Product Overview


This is a highly sophisticated 2-cavity precision injection mold engineered for parts requiring complex internal threads and lateral undercuts. The mold integrates an advanced gear-driven automatic unscrewing system, allowing for the seamless production of threaded components without the need for manual secondary operations.

At JST Mold, we specialize in "moving-part" molds. This tooling combines high-speed mechanical unscrewing with precision side-action sliders, making it the ideal solution for automotive fluid connectors, threaded caps, and high-performance industrial fittings that demand perfect thread integrity and structural precision.



Key Features

  • Integrated Automatic Unscrewing System: Features a precision gear-and-rack mechanism that automatically rotates to release internal threads during the de-molding cycle, ensuring high-speed production and zero thread damage.
  • Precision Side-Action Sliders: Equipped with multiple synchronized sliders to handle complex external undercuts and lateral features, allowing for intricate part designs.
  • 2-Cavity High-Efficiency Layout: A balanced 2-cavity design that ensures uniform material flow and cooling, providing identical part quality and weight across high-volume production runs.
  • Advanced Gear Engineering: The unscrewing components are manufactured with extremely tight tolerances to ensure smooth, repeatable motion and long-term mechanical reliability.
  • Premium Hardened Steel Construction: Built with high-performance mold steels such as S136, NAK80, or H13 (hardened) to withstand the mechanical wear of the unscrewing motion and provide a mold life of over 1,000,000 shots.
    
    

Technical Specifications

  • Mold Type: Automatic Unscrewing Injection Mold
  • Mechanism: Gear-Driven / Rack-and-Pinion Unscrewing + Side Sliders
  • Cavity Count: 2-Cavity (High-Precision Balance)
  • Application: Threaded Automotive Connectors, Fluid Caps, Industrial Fittings
  • Material Compatibility: PA66 (Nylon), POM (Acetal), ABS, or PBT
  • Tooling Steel: Hardened S136, 1.2344 (H13), or NAK80
  • Tolerance: Micron-level precision (Internal threads up to Class 6H/6g)
  • Surface Finish: Technical Polish / SPI Standard
    
    

Why Choose JST Mold for Threaded Components?

  1. Thread Engineering Expertise: Designing unscrewing molds requires deep technical knowledge of pitch, shrinkage, and mechanical timing. We ensure your threads are perfect every time.
  1. Complex Mechanism Mastery: Our engineers excel at integrating gears, racks, and hydraulic motors into robust mold structures that run 24/7.
  1. Proven Durability: We use specialized coatings and high-hardness steels on moving parts to minimize friction and prevent premature wear in high-speed environments.