Product Overview
This precision injection mold is custom-developed for producing transparent PC large and small lens parts, adopting reliable LKM standard mold base + 1.2344 hot work mold steel with hardness tempered to HRC 48-52. Designed with a 1+1 cavity layout, one mold can simultaneously manufacture two different-sized circular transparent lens components. Equipped with a pin point gate feeding system and professional high-precision tolerance control structure, the mold perfectly satisfies the strict requirements of transparent optical products on surface finish, dimensional accuracy, internal bubble-free molding and stable mass production, widely used in lighting, home appliance, electronic optical cover fields.
Core Features
1. Premium 1.2344 Mold Steel, HRC 48-52 High Wear Resistance
The mold core and cavity adopt imported 1.2344 hot work tool steel, undergoing strict vacuum quenching and tempering heat treatment to reach hardness HRC 48-52. This material features excellent thermal fatigue resistance, high hardness and outstanding polishing performance. It can be polished to a mirror-grade surface, fully meeting the high gloss requirement of transparent PC lens products, effectively avoiding scratches, foggy surfaces and mold rust during long-term continuous production, extending the mold service life up to 500,000+ shots with stable precision.
2. Strict Accurate Tolerance Control for Optical Lens
As a molding tool for transparent optical lenses, the whole mold adopts precision machining processes including CNC roughing, EDM finishing, wire cutting and high-precision surface grinding. We control dimensional tolerance within ±0.01mm for key assembly and optical surfaces. Optimized venting layout is designed for PC transparent material to eliminate air traps, silver streaks, bubbles and weld lines on lens surfaces, ensuring high light transmittance and flawless appearance of finished lens products, which can directly meet post-assembly and optical application standards without secondary polishing.
3. Pin Point Gate Design, Beautiful Lens Surface & Automatic Degating
This mold applies classic pin point gate feeding structure. The tiny gate mark is left on the non-optical surface of the lens, which can be automatically sheared during mold opening. No manual gate trimming or secondary surface processing is needed, greatly saving post-production labor costs. The balanced runner system ensures uniform melt filling in both large and small cavities, preventing uneven shrinkage, warpage and deformation of thin-wall transparent PC lenses, keeping consistent dimensional and surface quality between batch products.
4. LKM Standard Mold Base, Stable Mold Structure
We adopt mature LKM standard mold base with high rigidity and good interchangeability. Combined with chain-driven ejection mechanism and optimized cooling channel layout, the mold achieves fast and uniform cooling for transparent PC parts, shortening molding cycle and improving production efficiency. The whole mold structure is reasonably reinforced to resist high injection pressure, effectively avoiding mold deformation during long-time mass production, reducing maintenance frequency and failure rate.
5. 1+1 Cavity Layout, One Mold for Two Size Lenses
The 1+1 cavity design realizes synchronous molding of large-size and small-size circular transparent lenses in one single injection cycle. It can flexibly match customer’s mixed production demand of two specifications, improving raw material utilization and production flexibility. The independent cavity design avoids mutual interference of melt filling between two products, guaranteeing independent high precision for both large and small lens workpieces.
Technical Specifications
| Item | Parameter |
| Product Name | Transparent PC Large & Small Lens Injection Mold |
| Mold Base | LKM Standard Mold Base |
| Cavity Layout | 1+1 Cavity |
| Mold Core Material | 1.2344 Hot Work Steel |
| Hardness | HRC 48-52 |
| Gate Type | Pin Point Gate |
| Applicable Plastic Material | Transparent PC |
| Dimensional Tolerance | ±0.01mm High Precision Control |
| Surface Finish | Mirror Polished for Optical Surface |
| Ejection System | Chain Mechanical Ejection |
| Main Application | Optical Lenses, Lighting Covers, Transparent Electronic Housings |
![Large And Small Lense Mould]( "Large And Small Lense Mould")
Application Range
This precision PC lens injection mold is widely suitable for manufacturing various transparent circular optical parts:
LED lighting lamp lenses, lampshade covers
Home appliance transparent protective lenses
Electronic equipment observation windows and optical covers
Automotive small transparent light lenses
Cosmetic packaging transparent circular cover parts
Our Advantages
Professional optical transparent mold design experience: We conduct mold flow analysis in advance to optimize gate position, cooling and venting, thoroughly solve common PC molding defects like bubbles, silver lines and shrink marks.
Strict full-process precision inspection: Every mold undergoes three rounds of dimensional testing, mold trial and sample confirmation before delivery to ensure tolerance compliance.
One-stop custom service: We support customized cavity number, surface texture, gate type, mold steel grade according to your 2D/3D drawings, providing mold design, manufacturing, mold trial, packaging and global after-sales technical guidance.
Stable long-life mold solution: All molds are equipped with standardized spare wearing parts to support your continuous mass production and minimize your production downtime cost.
FAQ
Q1: Can this mold make other transparent materials besides PC?
A1: Yes, this mold with mirror polished cavity can also be adapted to PMMA, PET and other transparent engineering plastics after slight parameter adjustment of molding process.
Q2: What is the normal service life of this 1.2344 mold?
A2: Under standard injection molding maintenance, the service life can reach 500,000 to 800,000 shots, and the mold core can be re-polished to extend service life if slight wear occurs.
Q3: Can you customize the lens size and cavity quantity?
A3: Absolutely, we support fully customized mold development based on your product 3D files, including changing cavity layout, adjusting lens diameter, optimizing gate structure according to your production demand.
