In the first production step of electrode manufacturing, cathode and anode formulations are mixed with other active materials (conductive additives, solvents and binders) using a rotating tool. Dry mixing is followed by wet mixing (dispersing), and one paste each for cathode and anode, the so-called slurry, is produced. The drive for the stirring tool must withstand high transverse and axial forces and mix at different speeds.

Your requirement

• stable and high speeds
• long running and service life of the drives
• resistant to high transverse and axial forces

The ready-mixed slurry is applied to both sides of the aluminum or copper carrier foil. The metal foil is unwound from the spool and passed under constant tension over an application roller under the application system so that a uniform coating thickness is achieved. A decisive point here is a constant film pretension, because due to the coating on both sides, the strip cannot be laid down and, in addition, film cracks must be avoided. Directly afterwards, the coated electrode strip is fed into the dryer. Here, the solvent is removed from the slurry so that only the dry substrate remains on the film. After passing through the dryer, it is brought to room temperature via chill rolls and rewound.

Your requirement

• flawless surface quality
• exact film thickness accuracy
• correct and constant film pretension
• uninterrupted line operation in case of power failure

In the calendering process, the copper or aluminum foil (electrode foil), which is coated and dried on both sides, is compacted in a rolling mill. For this purpose, it is passed through several rotating pairs of rolls, between which it is compacted at a precisely defined line pressure. Constant pressure from above and below reduces the porosity of the coated substrate.

Your requirement

• constant speed
• concentricity of the rollers
• exact adherence to the line pressure

After compaction, the electrode strip is divided lengthwise into several narrower strips. For this purpose, the parent coil is unwound and cut either thermally by laser or mechanically by knife rolls. Cutting scraps are removed by suction or brushing and the cut strips are rewound onto so-called daughter coils.

Your requirement

• exact cut quality
• constant and high speed
• uninterrupted line operation in case of power failure

Drive technology from SEW-EURODRIVE can optimize your production throughout the entire manufacturing process. Be it handling gantries for transport in space, hoists for vertical displacement, shifting axes or even the handling of tool arms in variable directions.

Your requirements

• smooth process flow
• high speed
• exact timing
• precise movements
• variable use for various tool applications (turning, gripping, cutting, punching, welding, ...)