| 摘要 |
The three-side trimmer comprises an alignment station (F) for receiving booklet bundle ( 32 ) and aligning the booklets, and a cutting station (D) for cutting the top, bottom and fore edges of the bundle, and a chuck mechanism ( 40 ) which holds the bundle and conveys it to the cutting station. The cutting station has a cutting table ( 23 ), a top edge cutting knife ( 43 ), a bottom edge cutting knife ( 44 ), a fore edge cutting knife 42 , and a pressing plate 48 movable between a waiting position and a working position. An encoder reads the data about the rotational position of the servomotor ( 38 ) in the chuck mechanism while it holds the booklet bundle. The control portion ( 25 ) measures the height of the bundle and controls a driving mechanism of the pressing plate such that the pressing plate moves up and down between waiting and working positions.
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