| 摘要 |
In production of electrode paste, powder and solvent are separately injected into a hollow exterior component, the powder and the solvent are transferred to a downstream side in a transfer direction by rotation of two rotary shafts supported by the exterior component in a state where the rotary shafts are located parallel to each other at a predetermined interval, a mixture is produced by mixing the powder and the solvent by rotation of the rotary shafts without applying a shearing force, which is higher than or equal to a predetermined shearing force, to the powder, and producing electrode paste by kneading the mixture through application of a shearing force, which is higher than the shearing force that is applied in the mixing step, to the mixture through rotation of the rotary shafts. |
| 主权项 |
1. An electrode paste production device comprising:
a hollow exterior component having a generally tubular configuration while maintaining the same interior cross section throughout its length, and including in said interior, in an axial direction, an injection zone, a rough mixing zone and a kneading zone, the rough mixing zone being located between the injection zone and the kneading zone; two rotary shafts, the rotation speed of which is controlled by a controller, said shafts located in said interior in an axial direction and extending through the injection zone, rough mixing zone and kneading zone of the exterior component in a state where the rotary shafts are located parallel to each other at a predetermined interval in a direction perpendicular to the axial direction; the injection zone including a transfer portion in the form of a feed screw configured to transfer separately injected powder and solvent to a downstream side in a transfer direction by rotation of the two rotary shafts; the rough mixing zone including a rough mixing portion configured to produce a mixture by mixing the powder and the solvent by rotation of the two rotary shafts without applying a shearing force, which is higher than or equal to a predetermined shearing force, to the powder; and the kneading zone including a kneading portion configured to produce electrode paste by kneading the mixture through application of a shearing force, which is higher than the shearing force that is applied in the rough mixing zone, to the mixture by rotation of the two rotary shafts, wherein each rotary shaft in the rough mixing portion includes an impeller having a shaft portion and blade portions provided on the outer periphery of the shaft portion radially outward of the rotary shaft, and configured to apply a shearing force to the mixture of the powder and the solvent, and each rotary shaft in the kneading portion includes a paddle configured to apply a higher shearing force to the mixture than the shearing force applied by the impellers of the rough mixing portion, and wherein a clearance between an outer periphery of a rotational trajectory of the impellers of the rough mixing portion and an inner wall of the housing is larger than a clearance between an outer periphery of a rotational trajectory of the paddles of the kneading portion and the inner wall of the housing. |
