The DUPLUS2 concept increases productivity of single beam saws by utilizing two independent feeders to position the material in the saw. This allows for simultaneous cutting of head and main piece or cutting of staggered patterns with one cut.
Functional description
The turntable in the roller table rotates the board by 90 degrees and the head cut is executed according to the cut pattern. The head piece is then moved to the cross cut fence and pushed into the second feeder by the operator. The main piece is automatically rotated back 90 degrees and taken over by the main feeder. Both pieces are now independently positioned for the first cut. The head part is now being finished, while the main part is cut into strips.
Cross cutting of main piece
The first two strips of the main piece are turned 90 degrees and moved against the cross cut fence. The second feeder clamps the first strip and the second is clamped by the main feeder. Both strips are now independently positioned for the first and subsequent cuts. Depending on the strip width, only the clamps that are needed are engaged. The clamps are fully automatically controlled by the saw.
The last two strips of the main piece are processed as previously explained. Automatic loading saws with separate infeed pusher can load and align a new board, while the previous one is processed.
It is also possible that only the second feeder is needed for the last cross cuts. In this case, the main feeder will load and align a new book or just retrieve the next, already loaded, book.
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