Cover feeding device

1. A cover feeding device ( 1 ) for a bookbinding machine comprising

book block grippers ( 2 ) that continuously revolve along a closed track and have a rigid inner gripping jaw ( 2 a ) and an outer gripping jaw ( 2 b ) that can be moved relative thereto and thereby clamp and move book blocks on a moving plane,

a magazine ( 3 , 3 ′) having lateral stops ( 6 . 1 , 6 . 2 ) and in which covers ( 13 ) are situated,

a separating device ( 7 ) for withdrawing the covers ( 13 ) from the magazine ( 3 , 3 ′) along a withdrawal direction,

a transport device ( 8 ) that is arranged underneath the moving plane of the book blocks ( 14 . 1 , 14 . 2 , 14 . 3 ) and feeds the separated covers ( 13 . 1 , 13 . 2 , 13 . 3 ),

a scoring device ( 9 ) for scoring edges of a spine region of each withdrawn cover ( 13 . 3 ),

a cover press-on device ( 11 ) for pressing the cover ( 13 . 1 ) against the spine of the book block ( 14 . 1 ),

wherein the magazine ( 3 , 3 ′) includes at least a first lateral stop ( 6 . 1 ) that is arranged such that it can be fixed transverse to the withdrawal direction ( 12 ) and against which different covers ( 13 , 13 . 1 , 13 . 2 , 13 . 3 ), for book blocks ( 14 . 1 , 14 . 2 , 14 . 3 ) of different thickness are jointly placed, and

wherein at least the magazine ( 3 , 3 ′) is adjustable transverse to the withdrawal direction ( 12 ) such that an edge ( 17 ) of the spine region of the respective cover to be separated is withdrawn essentially in alignment with the rigid gripping jaw ( 2 a ).

2. The cover feeding device according to claim 1 , wherein the separating device ( 7 ) is adjustable transverse to the withdrawal direction ( 12 ) together with the magazine ( 3 , 3 ′).

3. The cover feeding device according to claim 1 , wherein a first conveying section ( 8 . 1 ) of the transport device ( 8 ) extends up to the scoring device ( 9 ) and includes outer cover guide rails ( 19 . 1 , 19 . 2 ), and said first conveying section is adjustable transverse to the withdrawal direction ( 12 ) together with the magazine ( 3 , 3 ′).

4. The cover feeding device according to claim 1 , wherein the magazine ( 3 , 3 ′) includes a second lateral stop ( 6 . 2 ) that is arranged opposite to the first lateral stop ( 6 . 1 ) and coupled to the drive of the first lateral stop ( 6 . 1 ) in such a way that the two lateral stops ( 6 . 1 , 6 . 2 ) can be fixed in accordance with the width (B) of the cover symmetrically referred to the cover center ( 20 ).

5. The cover feeding device according to claim 1 , wherein the magazine ( 3 ) includes a jogging device ( 21 ).

6. The cover feeding device according to claim 1 , wherein the magazine ( 3 ′) and the separating device ( 7 ) form a stream feeder ( 22 ), on which the covers ( 13 ) lie on top of one another in a forwardly overlapping formation.

7. The cover feeding device according to claim 1 , wherein the magazine ( 3 ) and the separating device ( 7 ) form a standing sheet feeder ( 23 , 23 ′).

8. The cover feeding device according to claim 7 , wherein the magazine ( 3 ) is arranged above the transport device ( 8 ) of the covers ( 13 ).

9. The cover feeding device according to claim 1 , wherein the magazine ( 3 ) includes a sensor ( 24 ) for identifying the covers ( 13 ).

10. The cover feeding device according to claim 2 , wherein a first conveying section ( 8 . 1 ) of the transport device ( 8 ) extends up to the scoring device ( 9 ) and includes outer cover guide rails ( 19 . 1 , 19 . 2 ), and said first conveying section is adjustable transverse to the withdrawal direction ( 12 ) together with the magazine ( 3 , 3 ′).

11. The cover feeding device according to claim 2 wherein the magazine ( 3 , 3 ′) includes a second lateral stop ( 6 . 2 ) that is arranged opposite to the first lateral stop ( 6 . 1 ) and coupled to the drive of the first lateral stop ( 6 . 1 ) in such a way that the two lateral stops ( 6 . 1 , 6 . 2 ) can be fixed in accordance with the width (B) of the cover symmetrically referred to the cover center ( 20 ).

12. The cover feeding device according to claim 2 , wherein the magazine ( 3 ) includes a jogging device ( 21 ).

13. The cover feeding device according to claim 2 , wherein the magazine ( 3 ′) and the separating device ( 7 ) form a stream feeder ( 22 ), on which the covers ( 13 ) lie on top of one another in a forwardly overlapping formation.

14. The cover feeding device according to claim 10 , wherein the magazine ( 3 , 3 ′) includes a second lateral stop ( 6 . 2 ) that is arranged opposite to the first lateral stop ( 6 . 1 ) and coupled to the drive of the first lateral stop ( 6 . 1 ) in such a way that the two lateral stops ( 6 . 1 , 6 . 2 ) can be fixed in accordance with the width (B) of the cover symmetrically referred to the cover center ( 20 ).

15. The cover feeding device according to claim 10 , wherein the magazine ( 3 ) includes a jogging device ( 21 ).

16. The cover feeding device according to claim 10 , wherein the magazine ( 3 ′) and the separating device ( 7 ) form a stream feeder ( 22 ), on which the covers ( 13 ) lie on top of one another in a forwardly overlapping formation.

17. The cover feeding device according to claim 3 , wherein the magazine ( 3 , 3 ′) includes a second lateral stop ( 6 . 2 ) that is arranged opposite to the first lateral stop ( 6 . 1 ) and coupled to the drive of the first lateral stop ( 6 . 1 ) in such a way that the two lateral stops ( 6 . 1 , 6 . 2 ) can be fixed in accordance with the width (B) of the cover symmetrically referred to the cover center ( 20 ).

18. The cover feeding device according to claim 17 , wherein the magazine ( 3 ) includes a jogging device ( 21 ).

19. The cover feeding device according to claim 14 , wherein the magazine ( 3 ) includes a sensor ( 24 ) for identifying the covers ( 13 ).

20. The cover feeding device according to claim 17 , wherein the magazine ( 3 ) includes a sensor ( 24 ) for identifying the covers ( 13 ).