Patent ID: 11858024
Assignee: BCGEN CO., LTD.
Field: Machine tools (Mechanical engineering)
Classification: CPC B  H  Y | IPC B  H

Claim 5:
6. A method for manufacturing a cap plate for a secondary battery, the method comprising the method for manufacturing a safety vent of a cap plate of claim 1, wherein
the material plate supplied in the safety vent forming step (100) is formed of a long plate extending laterally, the safety vent forming step (100), the discharge material portion cutting and removing step (200), and the lower surface flattening forming step (300) are successively performed by continuously moving the long material plate one-by-one pitch, a post-forging forming step further proceeds in which a forging process of forging another configuration formed in the cap plate is performed at least one time by operating the press after the lower surface flattening forming step 300 proceeds, and a material plate cutting step is further performed in which the material plate formed therein with the configuration different from a configuration of the safety vent is cut into a rectangular shape corresponding to a shape of the cap plate by operating the press after the post-forging forming step is performed.