Operating from Huangyan, Taizhou—widely known as China's Mould Capital—Taizhou Zhongyue Mould Co., Ltd. is a professional Plastic Junction Box Mould manufacturer specializing in high-precision injection tooling solutions. We develop molds for junction boxes, distribution boards (DB boxes), meter enclosures, fiber optic termination boxes, and waterproof switch housings. Our mould systems are engineered to comply with strict international protection standards such as IP66 and IP67, ensuring reliable electrical safety, sealing performance, and long service life.
| Type | Common Variants | Design Focus |
|---|---|---|
| Junction Box Mould | 86-type, 118-type, UK/US standard | Wall-mounting hole precision, knock-out plug design, smooth wire inlet |
| Distribution Board (DB) Mould | Single-phase / Three-phase, surface/recessed | DIN rail seat accuracy, busbar insulator ribs, transparent window clarity |
| Meter Box Mould | 1-phase / 3-phase / Smart meter | Anti-tamper seal structure, transparent polycarbonate (PC) cavity polish |
| Fiber Optic / Network Box | FTTH terminal box, patch panel | Cable tie anchor points, fiber bending radius control |
| Waterproof Box Mould | IP66/IP67 rated outdoor enclosure | Silicone rubber gasket groove precision, compression fit lid |
Electrical boxes require flame-retardant materials. We optimize gate location and cooling for V0/V2 Flame Retardant ABS/PC to prevent burning drips and maintain structural integrity during molding.
We use hardened steel threaded inserts (HASCO/DME standards) for cable glands and mounting points. This ensures screws do not strip during installation and provides long-term corrosion resistance.
For outdoor boxes, we design precise silicone gasket grooves and tongue-and-groove mating surfaces to prevent water ingress. Our molds ensure zero flash on sealing surfaces.
Meter boxes often require a clear PC window. We provide mirror-polished S136 stainless steel cavities to ensure optical clarity and scratch resistance.
We support Two-Shot Molding or Insert Molding for integrated rubber seals or metal mounting brackets, reducing your assembly labor cost.
| Item | ZHONGYUE Standard |
|---|---|
| Mold Steel | Core/Cavity: P20, 718H, S136 (Stainless for PC windows) |
| Slider/Lifter | Hardened to HRC 48-52 for wear resistance against glass-fiber materials |
| Cavity | 1×1, 1×2, 2×2 (for small junction boxes) |
| Runner | Cold runner (sub-gate) or Hot Runner (YUDO/HASCO) for large boxes |
| Ejection | Ejector pins + Stripper plate; Air-assist for deep boxes |
| Surface Finish | SPI A1–A3 polish for windows; VDI texture for body |
| Mold Life | 500,000 – 1,000,000+ shots |
| Applicable Material | ABS (Fire Retardant), Polycarbonate (PC), PP, Fiberglass reinforced Nylon |
Every mold undergoes dimensional inspection, assembly verification, mold testing, and production performance evaluation before delivery.
Zhongyue Mould follows ISO 9001:2015 quality management standards throughout the entire mold production process.
Taizhou Zhongyue Mould Co., Ltd. designs Plastic Junction Box Moulds with strict control on enclosure sealing structure, wall consistency, and assembly interfaces to ensure stable protection for internal electrical components.
Poor fit is usually caused by tolerance drift or mold mismatch. We solve this by precision machining of matching surfaces and strict assembly calibration during mold fitting.
Yes. We design molds for both surface-mounted and embedded electrical boxes by adjusting mounting structure and screw positioning systems.
Sink marks are often due to uneven wall thickness or insufficient cooling. We optimize rib layout and cooling balance to improve surface flatness.
Yes. We can design modular mold systems that allow different box sizes or internal layouts while maintaining a unified structural platform.
We use hardened mold steel, optimized cooling channels, and strict process validation to maintain consistent dimensions over long-term high-volume production.
Backed by 50+ team numbers and 20+ CNC machines, ZHONGYUE provides full DFM reports, MoldFlow analysis, and T1 trial support for your electrical projects. Contact us today for a customized quotation on your Electrical Box / Junction Box / DB Box Mould.
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