Device for separating sheet-type products
View Patent ↗A friction wheel singler for singling bank notes includes a singler roller 1 with grooves 2 , and retaining wheels 14 cooperating with the grooves 2 . The retaining wheels 14 have friction areas 14 a and sliding areas 14 b such that both a sliding area 14 b and a friction area 14 a cooperate with each groove 2 of the singler roller 1 . Such a friction singler is particularly suitable for longitudinal singling of narrow bank notes and prevents skewing of the sheet to be singled during the singling process.
1. A friction singler for singling sheet-shaped value documents ( 5 ), comprising:
a sheet magazine ( 16 ) for receiving a stack of sheets ( 5 ),
a picking device with a singler element ( 1 ), the singler element having, for contacting and conveying the sheets ( 5 a ) to be singled from the sheet magazine ( 16 ), one or more friction elements ( 3 ) with at least one groove ( 2 ) extending in the transport direction of the sheets ( 5 a ) to be singled, and
a retaining device ( 14 ) which forms with the singler element ( 1 ) a singler gap ( 19 ) through which sheets ( 5 a ) to be singled are conveyed from the sheet magazine ( 16 ), and which has friction areas ( 14 a ) of high coefficient of friction and sliding areas ( 14 b ) of low coefficient of friction cooperating with the at least one groove ( 2 ) of the singler element ( 1 ),
characterized in that the at least one groove ( 2 ) of the singler element ( 1 ) cooperates both with a friction area ( 14 a ) and with a sliding area ( 14 b ) of the retaining device ( 14 ).
2. A friction singler according to claim 1 , characterized in that the singler element ( 1 ) has at least two grooves ( 2 ), extending in the transport direction of the sheets ( 5 a ) to be singled, and that each cooperates both with a friction area ( 14 a ) and with a sliding area ( 14 b ) of the retaining device ( 14 ).
3. A friction singler according to claim 2 , characterized in that the order of friction and sliding areas ( 14 a , 14 b ) cooperating with the grooves ( 2 ), viewed transversely to the transport direction, is different for different grooves ( 2 ).
4. A friction singler according to claim 3 , characterized in that the order is opposite for adjacent grooves ( 2 ).
5. A friction singler according to claim 1 , characterized in that the retaining device ( 14 ) comprises one or more retaining wheels having the friction areas ( 14 a ) and sliding areas ( 14 b ).
6. A friction singler according to claim 1 , characterized in that the singler element ( 1 ) is a singler roller.
7. The friction singler of claim 1 , wherein said documents are bank notes.
8. The friction singler of claim 2 , wherein said at least two grooves include all grooves.
9. A friction singler according to claim 2 , characterized in that the retaining device ( 14 ) comprises one or more retaining wheels having the friction areas ( 14 a ) and sliding areas ( 14 b ).
10. A friction singler according to claim 3 , characterized in that the retaining device ( 14 ) comprises one or more retaining wheels having the friction areas ( 14 a ) and sliding areas ( 14 b ).
11. A friction singler according to claim 4 , characterized in that the retaining device ( 14 ) comprises one or more retaining wheels having the friction areas ( 14 a ) and sliding areas ( 14 b ).
12. A friction singler according to claim 7 , characterized in that the retaining device ( 14 ) comprises one or more retaining wheels having the friction areas ( 14 a ) and sliding areas ( 14 b ).
13. A friction singler according to claim 8 , characterized in that the retaining device ( 14 ) comprises one or more retaining wheels having the friction areas ( 14 a ) and sliding areas ( 14 b ).
14. A friction singler according to claim 2 , characterized in that the singler element ( 1 ) is a singler roller.
15. A friction singler according to claim 3 , characterized in that the singler element ( 1 ) is a singler roller.
16. A friction singler according to claim 4 , characterized in that the singler element ( 1 ) is a singler roller.
17. A friction singler according to claim 5 , characterized in that the singler element ( 1 ) is a singler roller.
18. A friction singler according to claim 7 , characterized in that the singler element ( 1 ) is a singler roller.
19. A friction singler according to claim 8 , characterized in that the singler element ( 1 ) is a singler roller.