Plastic mold accessories
As a professional hardware parts manufacturer with over 15 years of expertise, we specialize in custom
plastic mold accessor ies engineered exclusively for plastic injection molding, blow molding, andcompression molding systems. Our core capability lies in drawing-based customization (accepting 2D formats: DwG/DXF/PDF; 3D formats: STEP/IGES/STL), enabl ing us to tailor every component to your uniqueplastic part designs, res in requirements (PP/PC/ABs/PoM/PA66/medica l-grade resins), and productioncyc les. All products comply with global standards (IS0 9001:2015, IATF 16949:2016 for automot ive, IS013485 for medical) and are optimized for plast ic-specific challenges: thermal expans ion control, resinadhesion resistance, and high-cycle durability (1Mt shots).
Core Custom Plastic Mold Accessory Categories
We focus on 6 plastic mold-exclusive accessory groups, each customizable to yourdrawings-with a focus on solving key plastic molding pain points (e.g., unevenfilling, part warpage, long cooling cycles).
Gating & Hot Runner Accessories
These components regulate molten plastic flow into the cavity, directly determiningpart quality (no weld Iines, consistent density). Our customization aligns with yourresin type and part geometry. Key Customizable Components
Hot Runner Nozzles (HRN)
Customization:
Temperature Range:150C-400C (tailored for resins:180C-220C for PP/ABs, 280C-350Cfor PC/PA66+GF).
Tip Design:Open/closed tip, needle valve (for sequential gat ing), or thermal gate (for low-viscosity resins like PoM).
Size: Inner bore diameter 2mm -12mm, Iength 50mm -300mm (matched to your mold's hot runnermanifold).
Material:
Body: H13 (AlSI H13, HRC 44-48) for thermal stability; STAVAX (S136, HRC 30-35) for corrosionresistance (medical molds).
Tip: SKD11 (HRC 60-63) for wear resistance (glass-filled resins).
Sprue Bushings (SB)
Customization:
Taper Angle:1.5 -5 (optimized for resin flow: 2 for PP, 3 -4 for high-viscosity PC).Inner Bore
Finish: Mirror polishing (Ra 0. 02 um) to avoid resin sticking; optional DLC coat ing(For PVC/POM).
Size: Inner diameter 8mm - 50mm (matched to injection machine nozzle), length 20mm -200mm
Mater ial:H13 (high-temp molds) or STAVAX (food/medical molds).
Gate Inserts (Gl)
Customization:
Gate Type: Pin gate (O.5mm -2mm, for small parts like connectors), edge gate (Imm-5mm, for largeparts like housings), or submarine gate (hidden gate for cosmetic parts).
Texture: Smooth (Ra 0.O5 um) for clear parts; micro-textured (Ra 0.1um) to reduce gate burrs.
Cavity & Core Components
These are the "shaping core" of plastic molds our customization ensures precisereplication of intricate plastic part features (threads, ribs, undercuts) and
consistent part dimensions.
Key Customizab le Components
Custom Cavity Inserts(CCI)
Customization:
Cavity Count:1 -64 cavities (multi-cavity layouts optimized for balanced flow).
Feature Details: Threads (pitch 0. 2mm-5mm, accuracy DlIN 4), ribs (thickness 0. 3mm, draftangle 0.5 -2), and surface textures (leather grain / 拉纹 /pearlescent finish, Ra 0. 5um-5um).
Size: Max dimension 800mmX600mm (for Iarge parts Iike refrigerator Iiners).
Material:
STAVAX (S136): For medical/food-grade resins (PP/PE) and clear parts (PC/PMMA)-no rust, noresin contamination.
H13: For high-temperature resins (PA66+GF/PBT)withstands 20C X 500C thermal cycles.
WC-Co (tungsten carbide): For abrasive resins (glass-fi lled PPS)-wear rate reducedby 80% vs. steel.
Precision: Part replication accuracy 0.01mm; tooth profi le error 0.005mm (plastic gearcavities).
Case Study: Custom 8-cavity STAVAX inserts for medical PC syr inge barrelsachieved innerbore roundness 0. 003mm, meeting IS0 80369 standards.
Core Pins (CP)
Customization:
Design: Straight/stepped/threaded (for internal holes), hollow (for weight reduction), orslotted (for plastic ribs).
Size: Diameter 1mm -30mm (micro-pins 1mm for electronic connectors), length 10mm - 300mmMaterial:GCr15 (HRC 58- 62) for general use; STAVAX (S136) for corrosion resistance.
Surface Treatment: Nitriding (wear resistance) or PTFE coating (anti-stick for POM).
Undercut Lifters(UL)
Customization:
Stroke: 5mm - 50mm (matched to undercut depth: e.g., 8mm stroke for 6mm undercut on plasticenclosures).
Dr ive Type: Cam-driven/ hydraulic-driven (cam for high-speed molds, hydraul ic for large strokes).
Tip Design: Custom-shaped (to match undercut geometrye.g., hook-shaped for snap-fit features).
Material: 40CrNiMoA (HRC 30-35) for high strength; STAVAX (S136) for medical molds.
Ejection System Accessories
Plastic parts (especially thin-walled or sticky resins Iike PVC) require tailoredejection to avoid damage. Our components ensure uniform force and scratch-freeremoval.
Key Customizable Components
Ejector Pins (EP)
Customi zation:
Tip Shape: Flat (for large surfaces), rounded (for curved parts), or stepped (forrecessed areas).
Size: Diameter 1. 5mm -30mm (micro-pins 1. 5mm -3mm for connectors), length 10mm -500mm.
Cool ing Holes: Optional internal cool ing (for long pins 100mm, preventing resinsticking due to heat buildup).
Material: SKD11 (HRC 60-63) for general resins; H13 (for high-temp PA66+GF).
Surface Treatment: DLC coating (Ra 0. 05um) to reduce adhesionideal for PVC/POM.
Sleeve Ejectors (SE)
Customization:
Inner Bore: Clearance 0. 005-0. 01mm with core pins (prevents plastic flash),di ameter 2mm -35mm.
Length: 15mm-300mm (matched to cylindrical part heighte. g., 50mm length for40mm plastic rollers).
Material:SKD11 (HRC 60-63) or H13 (high-temp molds).
Ejector Blades (EB)Customization:
Thickness: 0. 8mm- 5mm (thin blades 0. 8mm-1. 5mm for thinwal ed parts | ike phonecases), width 10mm - 50mm.
Edge Design: Rounded (Ra 0. 1pm) to avoid scratching part surfaces.
Material: SKD11 (HRC 60- 63) with precision grinding (flatness 0.002mm/m).
Conformal Cooling System Accessories
Cooling directly impacts plastic part cycle time and warpage. Our customcooling components are designed to match your part' s geometry for uniformheat dissipation.
Key Customizable Components
Conformal Cooling Inserts (CCl)
Customization:
Channel Design: Follow part contours (e. g., curved channels for plastic cups, grid channelsfor large flat parts).
Material:Copper (C1100, thermal conductivity 401 W/(m . K)) for fast cooling; beryIliumcopper (CuBe2, 190 W/(m.K)) for high strength.
Application: Custom copper conformal cool ing inserts for PC plastic lens molds-reducedcycle time from 60s to 32s and warpage by 70%.
Cooling Plates (CP)
Customization:
Hole Layout: Dri1led (straight holes) or milled (grooved) channels, matched to moldcavity positions.
Size:100mmX100mm -1000mm X800mm, thickness 15mm - 50mm.
Material: Aluminum (6061, for |ight molds) or steel (P20, for heavy-duty molds).
Conformal Cool ing System Accessories
These ensure precise alignment of mold halves during clampingcritical forplastic part dimensional consistency (no flash, uniform walI thickness).
Key Customizable Components
Leader Pins (LP)
Customization:
Taper: 30 - 45 Iead-in (for easy mold assembly), diameter 8mm- 50mm, length 50mm-500mm.
Precision: Tolerance IT4, straightness 0. 001mm/m (prevents mold misalignment).
Material: GCr15 (HRC 58-62) for high fatigue resistance (10 cycles).
Guide Bushings (GB)
Customization:
Type: Straight/f langed (f langed for axial positioning), inner diameter 8. 1mm-51mm(0. 1mm clearance with leader pins).
Lubrication: Helical oil grooves (for high-speed molds 50 cycles/min) or self-lubr
icating PoM liners.
Material: Bronze (CuSn10Pb10, low friction) or STAVAX (S136, corrosion resistance).
Sealing & Thermal Management Accessories
Key Customizable Components
Mold Seals (MS)
Customi zation:
Type: O-r ings (inner diameter 2mm-200mm), U-cups (for hydraul ic cyl inders), or gasket str ips (for moldplate joints).
Material:
NBR (Shore A 705):0il-resistant, for hydraulic systems (120C).
FKM (Shore A755): High-temp resistance (200C), for cooling systems (PC/PA molds).
Silicone (FDA-compliant):For food/medical molds (PP/PE resins).
Thermal Insulators (TI)
Customi zation:
Thickness: 5mm-20mm (matched to mold temperature: 10mm for 180C molds, 15mm for 300Cmolds).
Material: Ceramic fiber (thermal conductivity 0.12 W/Im .K)) or glass-reinforced PPS (for structuralsupport).
Appl ication: Custom ceramic insulators for hot runner moldsreduced heat loss by 40% and energyconsumption by 15%.
Our "Drawing-Based Customization'"' Process
We streaml ine the customization workf low to turn your designs intoproduction-ready plastic mold accessories-with speed and precision:
Step1: Drawing Submission & Engineering Review
Accept alI industry-standard formats: 2D (DWG/DXF/PDF with dimensional annotations) |3D(STEP/IGES/STL for complex features).
Our plastic mold engineers review:
Dimensional feasibility (e.g., minimum cavity walI thickness 0. 3mm, undercut depth 50%
of part thickness).Resinmaterial matching (e. g., STAVAX for medical PC, H13 for high-temp PA66+GF).DFM (Design for Manufacturabil ity) optimization (e.g., adding draft angles to cavity inserts,adjusting cool ing channel layout).Deliver a technical quote + DFM report within 24 hours.
Why Choose Our Hardware Mold Accessories?
Plastic-Specific Expertise: We tailor materials (e.g., STAVAX for medical resins)and designs (conformal cool ing) to solve plastic molding pain points-unl ike generichardware manufacturers.
Drawing Precision: 100% adherence to your 2D/3D drawings, with part replication accuracy±0.01mm (meets DIN IS0 8015 for plastic parts).
Fast Turnaround: Prototypes in 3-5 days, mass production in 7-15 days (20% faster thanindustry averages).
Industry Compliance: Meet automotive (IATF 16949),medical (IS0 13485), and food-grade(FDA 21 CFR 177) standards-critical for regulated sectors.
End-to-End Support: Our engineers provide DFM advice (e.g., optimizing gate location toreduce weld Iines) and post-del ivery troub leshooting.
Whether you need custom hot runner nozzles for automotive plastic parts, conformal cool ing insrts for medical syr inges, or undercut 1ifters for consumer electronics enolosures- our drawing-based customization del ivers components that fit perfectly, per form reliably, and boost yourplastic molding efficiency. Contact our team today to discuss your drawing requirements!
Please contact us
📞Consultation Hotline:86-13713270202
📱 WhatsApp:86 13713270202
💻 Online Consultation: Customer Service Portal on the Right Side of the Website
📧Email Communication:huayuegongye@gmail.com
📍Factory Address:No.15, Tangdu Road, Xiniupo Dalang Town, Dongguan City,Guangdong Province, China(On-site visits by appointment)
