| 摘要 |
An electrode assembly (1) for a gas-tight electric storage battery or cell, comprises: a positive band electrode, a negative band electrode (one of the electrodes is indicated by reference numeral 5) and a separator (2), which are spirally wound together with the separator interposed between the electrodes to form an electrode set; and means for holding the electrodes and the separator together to prevent them unwinding; characterized in that said means is a metal ring (3) encircling the electrode set. Apparatus for manufacturing such metal rings comprises means (9) for advancing a metal strip along a predetermined path, a knife (11) for cutting transverse bands (21) from the strip two shaping tools (15, 16), preferably pivoted about a common axis and movable in directions transverse to the direction of advance of the metal shaping and welding pin (13), the shaping tools being adapted to shape said bands about the pin to form rings (3), the end portions (4) of each band when shaped to form a ring overlapping each other, the pin being movable longitudinally with respect to the direction of advance of the metal strip to and from a position in which it is disposed between the shaping tools when operated to effect shaping of each band about said pin, and means (19) for welding together the overlapping ends of each band while located on the pin. <IMAGE> |
