Struggling to Strip Shielded Wire Harnesses? A Synchronous Wire Cutting and Stripping Machine Handles Every Layer in One Process

Wire harnesses used in new energy vehicles are far more complex than the cables found in household appliances. During a visit to an EV charging equipment manufacturer, the production supervisor, Mr. Li, picked up a bundle of shielded cables and smiled.

"Removing just the outer jacket used to take forever," he said.

The reason is simple. A charging cable isn't made of just insulation and copper. Beneath the outer sheath are multiple functional layers—including aluminum foil shielding, braided shielding, insulation, and finally the conductor itself. Every layer has a specific purpose, and every layer requires a different stripping method.

Manual processing leaves almost no room for error. If the blade cuts even slightly too deep, the braided shield can be damaged, making the entire cable unusable.

Multi-Layer Shielded Cables Are Like Russian Nesting Dolls

Processing a shielded cable is much more complicated than stripping ordinary wire.

After removing the outer jacket, operators must carefully peel away the aluminum foil, cut the braided shield without damaging it, fold the braid back, and finally expose the inner insulation before the conductor can be processed.

According to Mr. Li, new employees previously needed nearly two weeks of training just to master this workflow. An experienced operator could finish around 800 cables per day, while beginners often managed only 300, with a defect rate close to 12%.

For EV charging cables, manufacturing tolerances are extremely strict. Even a stripping error greater than 0.5 mm may result in product rejection.

Manual Stripping Depends Too Much on Operator Skill

The biggest challenge lies in blade control.

When stripping by hand, cutting depth depends entirely on the operator's experience. Aluminum foil is extremely thin, and excessive force can easily damage the insulation or conductor underneath.

I asked Mr. Li why they didn't simply use conventional wire strippers.

He laughed and shook his head.

"Standard wire strippers work fine on simple cables," he explained. "But once shielding layers are involved, they simply can't handle the job."

The more processing steps involved, the greater the chance of human error. Outer jacket removal, foil stripping, braid cutting, braid folding—if any one step goes wrong, the entire cable often has to be reworked or discarded.

One Machine Replaces Multiple Manual Operations

Everything changed after the factory invested in a synchronous wire cutting and stripping machine.

Instead of treating each process separately, the machine integrates them into one automated workflow.

Operators simply load the cable, enter the required cutting length and stripping parameters through the touchscreen, and the machine automatically performs:

• Wire cutting

• Outer jacket stripping

• Aluminum foil removal

• Braided shield cutting

• Shield folding (braid turning)

• Multi-stage stripping

Watching the machine work is impressive. Within just a few minutes, a perfectly processed cable emerges with smooth, clean stripping surfaces and consistent dimensions from one piece to the next.

Servo-Controlled Precision for Every Layer

Mr. Li explained that the machine's core technology combines rotary blades with a high-precision servo control system.

Blade rotation speed, cutting depth, and stripping position are precisely controlled throughout the process. Each layer is processed independently without damaging the conductor underneath.

One particularly useful feature is its intelligent layer-by-layer processing logic.

Users simply define the cable structure—including the number of layers and material type—and the machine automatically determines the optimal processing sequence.

For example:

• Circular cutting for aluminum foil

• Longitudinal cutting for braided shielding

• Automatic braid folding at a preset angle

• Independent stripping parameters for every insulation layer

Instead of relying on operator experience, every movement follows programmed parameters, ensuring consistent processing quality.

Higher Productivity with Far Less Training

Automation has completely changed the role of production workers.

Instead of constantly supervising operators, Mr. Li now simply selects the appropriate program on the touchscreen and starts production.

New employees can learn machine operation in just a few hours rather than several weeks.

Daily production has increased to approximately 2,500 wire harnesses, while the defect rate has dropped from 12% to only 0.8%.

According to Mr. Li, the investment paid for itself in only three months through higher productivity, lower labor costs, and reduced material waste.

Built for the Demands of EV Manufacturing

As electric vehicles and charging infrastructure continue to expand, manufacturers require greater consistency, tighter tolerances, and higher production efficiency than manual processing can deliver.

A single charging station may contain dozens of shielded wire harnesses, each requiring precise stripping at both ends. Even minor inconsistencies can affect assembly quality and long-term reliability.

Automated wire processing equipment ensures that every cable is manufactured to the same standard—regardless of operator experience or production volume.

Today, Mr. Li's machine has been running continuously for more than four months. Apart from routine blade replacement, it has required virtually no maintenance.

When I asked whether the factory was still hiring, he smiled again.

"Yes," he replied. "But we're no longer looking for manual wire strippers. We're hiring machine operators."

Manufacturing is changing, and in today's factory, knowing how to program a machine has become far more valuable than mastering a hand tool.