ISO 9001:2015 CERTIFIED (No. 29024010637-03R0S) Shenzhen Factory: ONLINE (2h Rapid DFM Response Guarantee)
+86 13714578126 info@jyh-prototype.com
Get Instant Quote
Home / Divisions / Manufacturing Divisions
CORE DIVISION 03

Plastic Injection Molding & Tooling Division

Rapid Aluminum Prototype Molds to Hardened Steel High-Volume Production.

The Plastic Injection Molding Division bridges the critical gap between 3D prototyping and mass production. Whether you need 100 functional prototype parts in production-grade resin in 7 days or hardened multi-cavity steel tooling for millions of cycles, our tooling engineers and all-electric injection presses deliver precision molded parts with zero flash and tight tolerances.

Upload CAD for Free DFM Quote Explore In-Depth Capabilities
Rapid Tooling in 7–14 Days
All-Electric Precision Presses
Volume up to 1,000,000+ Parts
Engineering Competencies & Capacity

Built for Precision, Scalability and Speed

Shenzhen Jinyihe Technology combines advanced multi-axis CNC machines, certified metrology, and deep production expertise to bring high-complexity parts to market with zero delays.

Rapid Aluminum Tooling

Economical QC-10 aluminum molds producing 100 to 10,000 genuine production-grade parts in days.

Hardened Steel Production

H13, S136, and NAK80 tool steels rated for 100,000 to 1,000,000+ injection molding cycles.

Advanced Overmolding

Two-shot molding, elastomeric TPE/TPU overmolding, and threaded brass insert encapsulation.

Certified Resins

Processing ABS, PC, POM, PEEK, Nylon 66+GF, and medical-grade biocompatible thermoplastics.

Engineering Focus & Technical Depth

In-Depth Manufacturing Analysis

Discover how our advanced machinery, certified cleanroom facilities, and strict quality control protocols ensure reliable execution for mission-critical hardware.

ARTICLE 01 Rapid Bridge Tooling: Production Parts in 7 to 14 Days
Engineering Deep Dive

Rapid Bridge Tooling: Production Parts in 7 to 14 Days

The Agile Bridge Between CAD Prototypes and High-Volume Steel Dies

When functional testing requires real injection molded resins rather than 3D prints, our rapid tooling process delivers molds in as fast as 7 business days. Using high-strength aircraft aluminum (Alumold / QC-10) and standardized Master Unit Die (MUD) bases, we machine mold cores and cavities via high-speed CNC and wire EDM, slashing tooling investment by up to 70% compared to traditional tooling.

Key Engineering Takeaways
  • Pre-machined MUD mold bases drastically cutting steel prep time and tooling costs
  • Genuine production-grade thermoplastics with isotropic strength and true shrink rates
  • Ideal for clinical trials, pilot hardware testing, and bridge-to-market production
ARTICLE 02 High-Volume Multi-Cavity Hardened Steel Tooling
Engineering Deep Dive

High-Volume Multi-Cavity Hardened Steel Tooling

Built for Extreme Longevity, Zero Flash, and High-Speed Cycle Times

For volume manufacturing of 50,000 to 1,000,000+ components, our division manufactures hardened tool steel molds using premium ASSAB S136 stainless and H13 steel (hardened to 48–54 HRC). Utilizing conformal cooling channels and hot-runner manifold systems, our molds achieve rapid cycle times, eliminate gate blush, and maintain dimensional tolerances down to ±0.02mm.

Key Engineering Takeaways
  • Conformal 3D printed cooling channels reducing cooling cycle time by up to 35%
  • Yudo and Mold-Masters hot runner systems eliminating cold sprue plastic waste
  • Comprehensive mold life guarantee with free preventative maintenance for life of contract
ARTICLE 03 Overmolding, Insert Molding & Two-Shot Capabilities
Engineering Deep Dive

Overmolding, Insert Molding & Two-Shot Capabilities

Combining Soft Ergonomic Grips and Threaded Metal Inserts Seamlessly

Modern consumer hardware and medical handles require composite materials. JYH specializes in insert molding (encapsulating CNC-machined brass threaded bushings, pins, and metal lead frames) and overmolding (bonding soft-touch TPE or TPU rubber over rigid polycarbonate or nylon substrates), eliminating secondary mechanical fasteners and adhesive joints.

Key Engineering Takeaways
  • Chemical bonding compatibility matrix guaranteeing zero peeling between substrate and overmold
  • Vertical rotary table injection presses for rapid, safe insert loading and cycle efficiency
  • Integrated waterproof IP67 sealing gaskets molded directly onto enclosure perimeters
ARTICLE 04 Scientific Molding & Moldflow Engineering Simulation
Engineering Deep Dive

Scientific Molding & Moldflow Engineering Simulation

Predicting Gate Locations, Weld Lines, and Warpage Before Cutting Steel

Every tooling project at JYH starts with an exhaustive Autodesk Moldflow simulation. Our tooling engineers analyze injection fill patterns, air trap locations, sink marks, fiber orientation in glass-filled resins, and volumetric shrinkage. By optimizing gate sizes and wall thickness transitions before cutting metal, we eliminate costly mold rework and ensure First-Shot sample success.

Key Engineering Takeaways
  • Comprehensive Moldflow DFM report provided free of charge with every tooling quote
  • All-electric Fanuc and Sumitomo injection presses with closed-loop pressure feedback
  • CMM First Article Inspection verification of First-Shot (T1) samples
Technical Parameters & Capabilities

Injection Molding Division Technical Parameters

Official engineering tolerances, machinery specifications, and production thresholds maintained at our Shenzhen plant.

Tooling Class Mold Material Expected Mold Life Typical Lead Time
Rapid Prototype Tooling (Class 105) QC-10 Aircraft Aluminum 500 to 5,000 Parts 7 to 10 Business Days
Bridge Production (Class 104) P20 / NAK80 Pre-hard Steel 10,000 to 50,000 Parts 10 to 15 Business Days
Medium Production (Class 103) 718H / S136 Stainless Steel 50,000 to 250,000 Parts 15 to 20 Business Days
High-Volume Mass Production (Class 101) Hardened H13 / S136 (52 HRC) 1,000,000+ Parts 20 to 30 Business Days

Ready to Start Your Next Production Run?

Upload your 3D CAD files (.STEP, .STP, .IGES) today for an automated Design for Manufacturability (DFM) review and direct factory pricing.

Upload CAD for Instant DFM Quote Consult with a Lead Engineer
Customer Support & FAQs

Frequently Asked Questions

Direct answers regarding our manufacturing lead times, tolerances, certified materials, and global delivery.

Our rapid aluminum tooling can produce First-Shot (T1) samples in as fast as 7 to 10 business days from approved CAD drawings.
We process standard and engineering thermoplastics including ABS, PC, POM (Delrin), PP, PE, Nylon (PA6/PA66 with up to 50% glass fiber), PEEK, TPU, and TPE.
Yes. Every injection molding project includes a comprehensive Design for Manufacturability (DFM) and Moldflow simulation report before tooling commences.
You own 100% of the mold tooling. We can store and maintain it in our climate-controlled tooling library free of charge, or ship it to your facility at any time.
💬

Connect on WeChat

Scan the QR code or search WeChat ID to speak directly with our Shenzhen engineering team.

WeChat ID: JYH-Prototype
JYH AI Assistant · 智能客服
Online 24/7 · 全天在线
Get Instant Quote
Shenzhen High-Tech Industrial Park
+86 137 1457 8126