| 摘要 |
Disclosed is a universal platen holddown apparatus that includes a first plate rotatable about its central axis, and a second plate that is rotatable about its own central axis. The first plate is mounted within the second plate so that rotation of the second plate results in the eccentric rotation of a vacuum suction cup 14 mounted at or near a rim of the first plate. This arrangement allows the suction cup to be moved to any location within the boundaries of the second plate.
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