| 摘要 |
A material punching machine includes a guide member defining a material pathway for transporting a piece of material through the machine. The machine also includes a first sensor element disposed adjacent the material pathway for detecting a first position of a trailing edge of the material as the material moves through the material pathway. The machine also includes a second sensor element disposed adjacent the material pathway for detecting a second position of the trailing edge of the material as the material moves through the material pathway. The machine also includes a punch element that punches a first aperture in the piece of material in a first area of the piece of material based on detection of the trailing edge by the first sensor, and punches a second aperture in another area of the piece of material based on detection of the trailing edge by the second sensor. |
