| 摘要 |
A machine for producing folds in different media. The machine includes a pair of table top plates moveable relative to one another and define an escapement plate and the other a pleater plate. The plates grip the media at space apart locations approximately twice the distance of the required pleat heigth and as they cone together a pleat or fold is produced between the two plates. The escapement plate then rises allowing the pleat to move out beyond the return path of the escapement plate as it falls and clamps the media against the table top surface. When it reaches the bottom the pleater plate rises slightly to clear the media on the table surface and then moves away from the escapement plate to a position again approximately twice the pleat heigth in preparation of then gripping the web and moving forwardly toward the escapement plate to form the next fold or pleat. The pair of plates are moved along predetermined paths in timed relation by a pair of linkage systems. A power unit is connected to the respective linkage systems by a respective one of a pair of pneumatic piston-cylinder units the valving of which is capable of being controlled by a central processing unit to control the acceleration and deceleration of the moving plates and also when required have the piston-cylinder units act as a lost-motion connection between the driver and the driven plates.
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