Sheet take-out apparatus

Abstract

A sheet take-out apparatus has a table for loading a plurality of postal matter upright, a backup plate for pressing postal matter in the stacking direction and supplying them to a take-out position, a lower stream side floor belt installed so as to be partially exposed from the table in the neighborhood of the take-out position, an upper stream side floor belt, a take-out roller, and two auxiliary rollers. A difference in the projection position between the auxiliary rollers pressed by the postal matter supplied to the take-out position is detected and the inclination of the postal matter is detected. And, on the basis of the detection results, the moving speeds of the floor belts are controlled so as to correct the posture of the postal matter upright.

1 . A sheet take-out apparatus comprising: 
 a table configured to make contact with lower end sides of a plurality of sheets and loading them in an upright state;    a backup plate configured to press and convey the plurality of sheets loaded on the table in a direction of faces of the sheets, thereby supply the sheets to a take-out position;    a first floor belt installed so as to be exposed from the table to move the exposed part toward the take-out position in a conveying direction of the sheets, thereby move the lower end sides of the sheets toward the take-out position;    a second floor belt installed in a neighborhood of the take-out position from the first floor belt so as to be exposed from the table to move the exposed part toward the take-out position in the conveying direction of the sheets, thereby move the lower end sides of the sheets toward the take-out position;    take-out means for taking out the sheets supplied to the take-out position in a direction almost perpendicular to the conveying direction of the sheets;    detection means for detecting a posture of the sheets supplied to the take-out position; and    control means, on the basis of detection results by the detection means, for controlling a moving speed of at least one of the first and second floor belts and correcting the posture of the sheets supplied to the take-out position.    
     
     
         2 . The sheet take-out apparatus according to  claim 1  further comprising: 
 a first auxiliary roller, arranged behind in the take-out direction of the sheets by the take-out means, configured to follow-rotate in contact with a neighborhood of the lower end sides of the sheets taken out by the take-out means;    a first support member configured to support movably the first auxiliary roller in the conveying direction of the sheets so as to allow the first auxiliary roller to rotate and touch the sheets at a fixed pressure;    a second auxiliary roller configured to follow-rotate in contact with the sheets at a position separated upward from the first auxiliary roller; and    a second support member configured to support movably the second auxiliary roller in the conveying direction of the sheets so as to allow the second auxiliary roller to rotate and touch the sheets at a fixed pressure,    wherein the detection means detects displacements of the first and second support members, thereby detects the posture of the sheets.    
     
     
         3 . The sheet take-out apparatus according to  claim 2 , wherein the take-out means includes: 
 a first take-out roller configured to rotate and touch in a neighborhood of the lower end sides of the sheets supplied to the take-out position;    a third support member configured to support movably the first take-out roller in the conveying direction of the sheets so as to allow the first take-out roller to rotate and touch the sheets at a fixed pressure;    a first drive portion configured to rotate the first take-out roller in the take-out direction of the sheets;    a second take-out roller configured to rotate and touch the sheets at a position separated upward from the first take-out roller;    a fourth support member configured to support movably the second take-out roller in the conveying direction of the sheets so as to allow the second take-out roller to rotate and touch the sheets at a fixed pressure; and    a second drive portion configured to rotate the second take-out roller in the take-out direction of the sheets,    wherein the detection means detects displacements of the first to fourth support members, thereby detects the posture of the sheets.    
     
     
         4 . The sheet take-out apparatus according to  claim 1 , wherein the control means, when the detection means detects that upper end sides of the sheets are inclined in a direction separating from the backup plate, controls a moving speed of the second floor belt so as to be higher than a moving speed of the first floor belt and when the detection means detects that the upper end sides of the sheets are inclined toward the backup plate, controls the moving speed of the second floor belt so as to be lower than the moving speed of the first floor belt.  
     
     
         5 . The sheet take-out apparatus according to  claim 1 , wherein: 
 the second floor belt has a plurality of independent movable belts lined in the take-out direction of the sheets and    the control means, on the basis of the detection results by the detection means, controls independently moving speeds of the plurality of belts.