| 摘要 |
A buttonholing machine includes a hammer position adjustment mechanism for changing the length of a buttonhole being formed, and the hammer position adjustment mechanism includes a hammer, a locating block driven by a driving unit to move vertically, a slidable hammer holder connected to the hammer and slidably assembled to the locating block to move vertically along with the locating block, a driving source mounted on the locating block for driving the slidable hammer holder to move laterally in y-axis direction through meshing of a screw rod connected to the driving source with a threaded hole provided on the slidable hammer holder. When the screw rod is driven by the driving source to rotate in the threaded hole, the slidable hammer holder is caused to move linearly in y-axis direction. With these arrangements, the hammer position adjustment mechanism is simplified and occupies less operational space on the buttonholing machine. |
