| 摘要 |
PURPOSE: A punching apparatus is provided to prevent damage to multiple punching pins by elastically pressing the punching pins using elastic members. CONSTITUTION: A punching apparatus comprises a body(10), a lifting block(20), a lifting unit(30), multiple punching pins(40), and a control unit(50). The lifting block is coupled to the body and has a hollow part(21) and multiple through holes. The lifting unit is connected to the lifting block and lifts the lifting block. The punching pins are slidably inserted into the through holes of the lifting block. The control unit is connected to the outer ends of the punching pins and protrudes or inserts the inner ends of the punching pins from/to the hollow part of the lifting block. |
