OEM Rapid Prototype Mold Tooling CNC Machining For Automotive Electrical Junction Boxes

ALLWIN MOULD is a leading manufacturer of high-precision injection moulds dedicated to automotive electrical components. We specialize in custom tooling solutions for automotive junction boxes, fuse holders, and wiring harness accessories, delivering moulds that ensure exceptional dimensional accuracy, chemical resistance, and long-term reliability in harsh under-hood and interior environments.

Product Overview

This is a custom multi-cavity injection mould designed for mass production of complex automotive electrical junction box/connector housing components (as shown in the image). The part features an integrated, multi-chamber structure with mounting brackets, clamping slots, and cable entry points. Manufactured using high-performance engineering plastics, this housing serves as the critical protective and mounting structure for automotive electrical systems.

Key Design & Manufacturing Features

✅ Complex Structural Moulding Capabilities

• Multi-Chamber Layout: Precision moulding of nested cavities and slots for relay/sensor mounting, ensuring perfect fit for automotive electrical components.
• Integrated Hinged Cover: The mould forms a flexible, snap-fit cover with living hinge technology, eliminating the need for additional assembly parts.
• Mounting & Fastening Features: Precision-molded holes, notches, and locking structures for secure installation in vehicle dashboards/engine bays.

✅ High-Precision Mould Construction

• Cavity/Core Inserts: Manufactured from H13 / S136(H) hardened steel with Nitride treatment, delivering superior wear resistance and a long mould lifespan of 500,000 – 1,000,000+ shots.
• Precision Ejection System: Equipped with dedicated ejector pins and slow-motion ejection mechanisms to prevent deformation of thin-walled and fragile structures.
• Mould Base Standards: Compliant with LKM / HASCO / DME international standards, ensuring global interchangeability and easy maintenance.

✅ Material Compatibility for Automotive Grade

• Primary Materials: Optimized for PA66+GF, PP+GF, or ABS materials. These offer high thermal stability (-40°C to 120°C), flame retardancy, and resistance to automotive fluids.
• Surface Finish: Precision ground to Ra 0.8μm for smooth part ejection and minimal post-processing.

✅ Advanced Mould Cooling & Efficiency

• Conformal Cooling Channels: Strategically routed to ensure uniform temperature distribution, minimizing warpage in complex geometries and reducing cycle times.
• Hot Runner Option: Available with a hot runner system for high-volume production, reducing material waste and improving part quality.

Core Advantages of ALLWIN MOULD

• Automotive Specialization: Deep experience in moulds for electrical components (junction boxes, connectors, sensor housings) meeting ISO 9001 / IATF 16949 standards.
• One-Stop Service: End-to-end support from DFM analysis, mould design, CNC machining, mould testing, to after-sales maintenance.
• Cost-Effective & Efficient: Short lead times (25–35 days) and factory-direct pricing for global OEMs.
• Quality Assurance: Rigorous inspection using CMM (Coordinate Measuring Machine) to ensure tight tolerances of ±0.01mm.

Application Scope

Our moulds are widely used for producing:

• Automotive junction boxes and fuse box components
• Electrical connector housings and wiring harness accessories
• Sensor mounting brackets and thermal management covers
• Interior electrical component structural parts