This design introduced U folds in trigger's composition structure foundation, has analyzed the control request, designs its pneumatic system, selects the CPM1H controller, and designs the corresponding control procedure. The control procedure includes: The replacement operation, the monocycle, process the control and the misoperation on foot forbid the link. This table-flap mechanic makes the stable property, the ease of operation, the economy to be suitable, can meet the small moulded timber factory batch processing needs well.
key word: The U board folds the trigger PLC solenoid valve
