| 摘要 |
A puncher having a double cutter linkage structure includes a driving shaft, a driving plate, a front linking rod, a rear linking rod, a front cutter seat, a rear cutter seat, a front cutter, a rear cutter, and a positioning seat. The driving plate is fixed to the driving shaft which has two ends connected to one end of the front linking rod and one end of the rear linking rod, respectively. The front linking rod is pivotally connected to the front cutter seat which is fixed to the front cutter. The rear linking rod has an curved arm at the other end to be connected to the rear cutter seat which is fixed to the rear cutter. The positioning seat is in a reverse U shape and has a front plate and a rear plate at respective sides.
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