| 摘要 |
<p>The three-side trimmer according to the present invention comprises an alignment station (F) for receiving booklet bundle (32) and aligning the booklets in the height direction, and a cutting station (D) for cutting the top edge, bottom edge and fore edge of the booklet bundle. The three-side trimmer further comprises a chuck mechanism (40) which holds the booklet bundle and conveys it from the alignment station to the cutting station. In the cutting station, there is provided a cutting table (23) for supporting a booklet bundle thereon, 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, which is disposed over the booklet bundle, and a working position where the pressing plate presses the booklet bundle to the cutting table. An encoder reads the data about the rotational position of the servomotor (38) in the chuck mechanism while the chuck mechanism (40) holds the booklet bundle. The control portion (25) measures the height of the booklet bundle, on the basis of this data. The control portion controls a driving mechanism of the pressing plate, on the basis of this measured value. The control portion controls so that the waiting position of the pressing plate is adjusted to a height corresponding to the height of the booklet bundle, and the pressing plate moves up and down between the adjusted waiting position and the working position. <IMAGE></p> |
