| 摘要 |
PURPOSE:To prevent the re-sticking of the crushed positive electrode black mix by forming the tip shape of a ultrasonic horn into the comb teeth shape with continued irregularities along the shift direction and forming a recess groove storing peeled pieces of the positive electrode black mix on the receiving bed side below it. CONSTITUTION:The positive electrode black mix 3 laminated on both faces of a net-shaped current collector is relatively moved and partially removed by the ultrasonic processing to expose the current collector in a belt shape, then a lead plate is welded to the exposed portion 2a to manufacture a positive electrode for a cell. The tip shape of a ultrasonic horn 12 used for the ultrasonic processing is formed into the comb teeth shape with continued irregularities along the shift direction, a recess groove 14a storing peeled pieces of the positive electrode black mix 3 is formed on the receiving bed 14 side installed below the ultrasonic horn 12 facing it. The fine powder floated on the surface of the positive electrode black mix 3 by crushing is stored in recesses 12b adjacent to projections 12a, the re-sticking of the crushed positive electrode black mix can be prevented. |
