| 摘要 |
A upper tool holder for a press brake includes a holder body; an upper tool clamper that is provided on the holder body, and capable of swinging in an open-close direction when replacing the upper tool; a drop prevention piece that is provided at a lower portion of the upper tool clamper, and capable of engaging with a drop prevention groove formed on the upper tool; an engagement recess that is provided on one of an upper portion of the upper tool clamper and the holder body; an engagement member that is provided on another of an upper portion of the upper tool clamper and the holder body, and capable of engaging with the engagement recess; an auxiliary urging mechanism that functions as resistance when opening the upper tool clamper further in order to replace the upper tool, and functions so as to support a closing operation when closing the upper tool clamper from a further opened state; and a pusher that is provided in the auxiliary urging mechanism, stays at a home position in an ordinary state regardless of an opening or closing operation of the upper tool clamper, and is urged in a closing direction of the upper tool clamper. According to the upper tool holder, unexpected drop-off of the upper tool can be prevented, so that safety can be improved. |
