How to Choose a Semi-Automatic Wire Stripping Machine for EV Charging Cables

High-voltage cables are very different from ordinary low-voltage wires. They have larger cross-sectional areas, thicker insulation, and more complex structures. The outer layer is usually protected by thick rubber or other specialized materials, beneath which there may be high-voltage insulation, shielding, and reinforcement or braided layers. Ordinary wire stripping machines can struggle with this type of cable. It is like trying to peel a large coconut with a small knife—it may be possible to make some progress, but it is difficult to achieve a clean result without damaging the structure underneath.

Semi-automatic stripping machines sit somewhere between fully manual work and full automation. They retain some of the flexibility of manual operation while using the machine to perform the same tasks with greater precision. The key is to control the stripping depth and force properly.

First, the thickness and material of the outer jacket and inner insulation can vary from one section to another. Therefore, a stripping machine needs to do more than simply remove the outer layer. It must strip different sections according to the structure of each layer. This is not a job that can always be completed in one simple operation.

Another consideration is the conductor inside high-voltage cables. It is usually made from multiple strands of thick copper wire. If the stripping process is not handled carefully, the copper strands can be pulled apart or flattened. This can create problems later during terminal crimping and busbar connections. At the same time, the outer insulation is often made from soft, elastic materials such as rubber or TPE. These materials can spring back when cut with a blade, which places even greater demands on the machine's clamping stability.

So, what type of semi-automatic stripping machine can meet these requirements?

The first requirement is an adjustable stripping depth. The depth should not be adjusted simply by relying on personal experience or guesswork. It needs to be precisely controlled according to the different layers and materials of the cable. Otherwise, you may end up with a situation where the cut is too deep in one area and too shallow in another—potentially damaging the copper conductor or failing to remove enough insulation.

The second is stable clamping and tension control. A large cable diameter itself is not necessarily a problem. The real challenge is that a thick outer jacket and the inner layers may have completely different levels of stiffness. One section may be relatively hard while another is much softer. If the cable cannot be held securely throughout the process, the stripped sections may vary in length and have rough or uneven surfaces, which can affect subsequent installation work.

Finally, there is parameter storage. EV charging cables come in many different specifications, and production quantities can vary significantly. This means operators often need to switch between different cable types. Reconfiguring the machine every time a new cable is processed not only wastes time but also makes operation more complicated. If the machine can save the processing parameters for each cable and automatically recall the appropriate settings the next time that cable is processed, overall production efficiency can be significantly improved.