| 摘要 |
In a die cutting press for elongated material, a registration system includes a die unit that is shiftable along the path of travel of the material, along a direction of travel transverse to the path of travel, and about a reference axis perpendicular to a plane containing the material. At least one camera is provided for receiving images from the desired locations that are occupied by indicia on the material when defined areas of the material are in a predetermined relationship relative to the die unit. Reference image data representative of the desired locations of the indicia relative to the die unit is produced so that a comparison can be made between the reference image data and the actual positions of the indicia. This permits a controller to change the position of the die unit relative to the material to compensate for the difference in position between the indicia within the image and the desired locations of the indicia so that one of the defined areas of the material is positioned in the desired predetermined relationship with the die unit. |
