CN Mould & Plastic Limited
EN

Wire Harness Overmolding Case

Customer Background


Industry: ‌ Automobile manufacturing ‌


The customer needs to optimize the rubber overmolding process of automotive wiring harnesses to address issues such as insufficient wear resistance and unstable insulation performance of existing materials, in order to meet the reliability challenges of automotive electrical systems under complex working conditions


Challenges and needs


Core issue ‌ :


The wire harness is prone to wear: the original overmolding material has insufficient anti-aging performance, causing the wire harness to crack easily in vibration and high temperature environments, the repair rate is high.

Poor consistency of process ‌: The manual overmolding process causes uneven thickness, affecting insulation performance and posing safety hazards.

Cost pressure: Frequent rework and material waste are driving up production costs, and customers urgently need solutions that balance performance and cost-effectiveness.



Solution


Customized wire harness overmolding material ‌:

With ‌ a high-performance polymer substrate ‌, abrasion resistance is enhanced (laboratory tests show a 50% increase in abrasion resistance) and aging resistance (no cracking at -40 ° C to 150 ° C).

Optimize the material formula to enhance the adhesion to wire harness substrates such as PVC and PA66+33GF

Automated the overmolding process ‌ :

Eliminate manual operation deviation.

Integrate an online quality inspection system to monitor insulation performance in real time.



Results and feedback:


Quality improvement: Harness return rate has been significantly reduced, and product life has been extended.

Efficiency optimization ‌: Automated processes have effectively improved production efficiency and increased daily capacity.

Cost savings: Reduced overall production cost


Wire_Harness_Overmolding.png


Customer evaluation


“CN team's wire harness overmolding process has completely transformed our production pain points!  

Real-time monitoring of curing temperature and overmolding uniformity to ensure stable yield, which is far exceeding the industry average.

The precision of your craftsmanship and your fast response capability are the core reasons why we chose a long-term partnership ‌."


#ADVANCED MANUFACTURING
#SPECIAL
Mold Design Procedure
05-09
Design BasisThe main basis for mold design is the plastic product drawings and physical samples provided by the customer. Mold designers must conduct a detailed analysis and understanding of the produ...
Secondary Processing of Injection-Molded Parts
05-08
The secondary processing of plastic products is in contrast to the primary processing, that is, the products that have been formed through primary processing (such as injection molding, extrusion, and...