Ultra-thin copper foil slitting machine: to meet the needs of ultra-thin copper foil processing

Ultra-thin copper foil slitting machine is a high-precision equipment specially used for processing ultra-thin copper foil, which is widely used in lithium batteries, flexible circuit boards (FPC), 5G communication and other fields. As the thickness of copper foil continues to decrease (e.g., 6μm, 4.5μm or even thinner), higher requirements are placed on the accuracy, stability and process control of the slitter. The following are the key features and technical analysis of the ultra-thin copper foil slitting machine:

1. The core needs of ultra-thin copper foil slitting machine

• High-precision slitting: The thickness of ultra-thin copper foil is usually a few microns, and the slitting needs to ensure that the cutting edge is neat, no burrs, no wrinkles, and the slitting accuracy needs to reach ±0.01mm or even higher.

• Stability requirements: ultra-thin copper foil is easy to break and wrinkle, and the equipment needs to be stable in high-speed operation to avoid tension fluctuations and mechanical vibration.

• Surface protection: The surface of copper foil is easy to be scratched, and the slitting process needs to avoid mechanical contact damage to ensure the surface finish.

• Efficient production: On the premise of ensuring quality, improve the slitting speed to meet the needs of large-scale production.

2. The key technology of ultra-thin copper foil slitting machine

(1) High-precision tension control system

• Closed-loop tension control technology is used to monitor and adjust the copper foil tension in real time to ensure that the tension is constant during the slitting process and avoid breakage or wrinkling.

• Equipped with high-sensitivity tension sensor and precision servo motor to achieve precise control of small tensions.

(2) Precision slitting tools

• Use tungsten carbide or diamond-coated tools to ensure tool sharpness and wear resistance, reducing burrs and copper powder.

• The tool installation needs to be equipped with high-precision adjustment function to adapt to the needs of copper foil slitting of different thicknesses and widths.

(3) High rigidity mechanical structure

• The equipment adopts a high-rigidity frame and precision guide rails to reduce vibration and deformation in high-speed operation and ensure slitting accuracy.

• The slitting roller and guide roller need to be dynamically balanced with high precision to avoid damage to the surface of the copper foil due to vibration.

(4) Intelligent control system

• Equipped with PLC (Programmable Logic Controller) and touch screen man-machine interface to achieve accurate setting and real-time monitoring of slitting parameters (such as speed, tension, width).

• Support automatic guiding function to ensure that the copper foil is always in the correct position during the slitting process.

(5) Surface protection technology

• Non-contact guiding and slitting technology is used to reduce damage to the copper foil surface by mechanical contact.

• Use static elimination devices in critical areas to avoid static adsorption of copper powder or dust.

3. Application advantages of ultra-thin copper foil slitting machine

• High-precision slitting: meet the slitting needs of ultra-thin copper foil, with high cutting edge quality, no burrs and no wrinkles.

• Efficient production: the slitting speed can reach more than 300m/min, which is suitable for large-scale production.

• Adaptable: It can handle copper foils of different thicknesses (e.g. 4.5μm, 6μm, 8μm, etc.) and widths.

• Low Loss: Reduce material waste and surface damage through precise control and surface protection technology.

4. Future development trends

• Higher precision: As the thickness of the copper foil is further reduced, the slitting accuracy needs to be increased to ±0.005mm or even higher.

• Intelligent upgrade: Introduce AI technology and machine vision system to realize automatic detection and optimization of the slitting process.

• Green and environmental protection: reduce the generation of copper powder and waste in the slitting process, and improve the utilization rate of materials.

• Multi-functional integration: Integrate slitting, detection, winding and other functions into one to improve production efficiency.

conclusion

The ultra-thin copper foil slitting machine is the core equipment of ultra-thin copper foil processing, and its high precision, high stability and intelligent level directly determine the product quality and production efficiency. By optimizing tension control, tool design, mechanical structure and intelligent system, the ultra-thin copper foil slitting machine can meet the processing needs of ultra-thin copper foil in the fields of lithium batteries and 5G communications, and promote the technological progress of related industries.