Sheet material accumulating apparatus

A paper sheet accumulating apparatus, comprising:

• a primary conveyer (2);
• a secondary conveyer (3);
• and an accumulation unit (4),
• the primary conveyer (2), secondary conveyer (3), and accumulation unit (4) being arranged in this order following a conveyance flow of a sheet material (W),
• the accumulation unit (4) including a posture conversion unit (35) for converting the sheet material (W) in a flatted posture into that in a standing posture by guiding the sheet material (W) from one end side thereof to a downward flow and a table top (7) for receiving the sheet material (W) at a lower position of the posture conversion unit (35) and accumulating the sheet material (W) in a longitudinally arranged state while supporting the reached sheet material (W) sequentially in a standup posture,
• the primary conveyer (2) including a flat conveyance plane (6) for holding the sheet material (W) in a flatted posture at a substantially same height as the table top (7) of the accumulation unit (4), and
• the secondary conveyer (3) being made able to convey the sheet material (W) received from the primary conveyer (2) in a rise inclined direction so that the sheet material (W) can be delivered by feeding to the posture conversion unit (35) of the accumulation unit (4), and having a first guide belt (12) and a second guide belt (13) that sandwich the sheet material (W) between the first guide belt (12) and the second guide belt (13) and convey the sheet material (W), the first guide belt (12) and the second guide belt (13) keeping parallelism thereof and being twisted along a conveyance direction so that top and bottom of the sheet material (W) being sandwiched is inverted.