Paper medium stacking device

Abstract

A sheet-type medium stacking device includes a piece-by-piece sheet-type medium conveying mechanism, an upper conveyor belt, an arc-shaped stacking plate, a movable blocking mechanism, a sensor device, and a control unit, wherein at least one pair of convex ribs are formed on a section, close to the conveying mechanism, of the arc-shaped surface of the arc-shaped stacking plate at two sides of the upper conveyor belt, and a distance between the pair of convex ribs is smaller than the minimum dimension of the sheet-type medium in a direction perpendicular to the conveying direction, therefore the sheet-type medium being clamped and conveyed forms a V shape, which greatly increases the rigidity of the sheet-type medium, and effectively solves the problems of blockage caused by the slit at the tail of the sheet-type medium and blockage caused by folding and arching of soft and old medium.

1 . A sheet-type medium stacking device, comprising:
 a piece-by-piece sheet-type medium conveying mechanism configured to convey a sheet-type medium piece by piece;   an upper conveyor belt configured to provide a driving force to the sheet-type medium and arranged around a driving transmission shaft and a driven transmission shaft which are arranged in a conveying direction of the sheet-type medium;   an arc-shaped stacking plate configured to support the sheet-type medium, wherein an arc-shaped surface, fitting closely to the upper conveyor belt, of the arc-shaped stacking plate defines a conveying passage for the sheet-type medium, a length of the conveying passage is at least greater than a length of one sheet of the sheet-type medium in the conveying direction, and one end of the conveying passage abuts the piece-by-piece sheet-type medium conveying mechanism and is slightly lower than a delivering outlet of the conveying mechanism, and another end of the conveying passage forms a discharging outlet for a whole stack of sheet-type medium;   a movable blocking mechanism arranged on a section of the conveying passage close to the discharging outlet and configured to selectively block the sheet-type medium;   a sensor device arranged at a tail end of the delivering outlet of the piece-by-piece sheet-type medium conveying mechanism and configured to detect the arrival and passing of a sheet of the sheet-type medium; and   a control unit configured to control the upper conveyor belt to move or stop moving according to information feedback from the sensor device;   wherein, at least one pair of convex ribs are formed on a section, close to the conveying mechanism, of the arc-shaped surface of the arc-shaped stacking plate at two sides of the upper conveyor belt, and a distance between the pair of convex ribs is smaller than the minimum dimension of the sheet-type medium in a direction perpendicular to the conveying direction.   
     
     
         2 . The sheet-type medium stacking device according to  claim 1 , wherein the arc-shaped stacking device comprises three sections, a section near the piece-by-piece sheet-type medium conveying mechanism forms a rear arc-shaped plate, a section near the discharging outlet forms a front arc-shaped plate, and a middle section forms a reversing device. 
     
     
         3 . The sheet-type medium stacking device according to  claim 2 , wherein a recycling conveyor belt assembly and a discharging conveyor belt assembly are arranged below the reversing device and the front arc-shaped plate, wherein at least a section of the recycling conveyor belt assembly fits with a section of the discharging conveyor belt assembly to form a recycling conveying passage for the sheet-type medium. 
     
     
         4 . The sheet-type medium stacking device according to  claim 1 , wherein a floating pinch roller is provided on a side, away from the arc-shaped plate, of the upper conveyor belt at a position corresponding to the convex ribs, and is configured to increase a conveying force of the upper conveyor belt to the sheet-type medium.