| 摘要 |
The present invention provides a joiner optimized for a normal coil plate, a steel plate, or thin plate connection by realizing a mold structure which can minimize damage to a connection portion connecting an overlapped portion between a preceding coil and a following coil. To achieve this, in the joiner connecting an overlapped portion between a preceding coil and a following coil, a lower mold comprises a lower holder and a lower stripper, and an upper mold comprises an upper holder and an upper stripper. |
