Patent ID: 6030165
Filing Date: 2000-02-29
Classification: B42B

Abstract:
A book binding machine having:(a) a sheet supply inlet for receiving sheets one by one;(b) a sheet stitching station;(c) a sheet eject outlet for ejecting stitched sheet;(d) a sheet transport path for transporting sheets from said sheet supply inlet to said sheet eject outlet;(e) a stitching head arranged at said sheet stitching station;(f) a stopper disposed downstream of said stitching head in said sheet stitching station for putting sheets in position; and(g) a sheet gathering and registering mechanism comprising a slide guide arranged along a portion of said sheet path extending from said sheet supply inlet to said sheet stitching station, a base plate mounted on said slide guide for sliding movement, a drive means for moving said base plate, a pair of sheet feed rollers arranged above said portion of said sheet transport path and attached to said base plate for successively feeding sheets from said sheet supply inlet into said sheet stitching station so as to lay the sheets one above another in said sheet stitching station: and a guide plate attached to said base plate for swaying movement in such a manner that said guide plate pushes a rear end of a top sheet toward said stopper until a front end of the top sheet abuts against said stopper each time the sheet is supplied to said sheet stitching station, said sheet gathering and registering mechanism is arranged for successively supplying the sheets from said sheet supply inlet to said sheet stitching station so as to lay the sheets one above another in said sheet stitching station and pushing the rear end of the top sheet toward said stopper until the front end of the top sheet abuts against said stopper each time the sheet is supplied to said sheet stitching station, whereby the gathered sheets are positioned with alignment of the front and rear ends thereof in said sheet stitching station.