초록 ▼

The invention relates to an arrangement (1) for conveying of sheets (2a, b), comprising upper and lower receiving rolls (3, 4), an upper belt element (5) and a receiving surface (6). The belt element (5) extends in a region above the receiving surface (6). The sheets (2a, b) are conveyed in a substa

The invention relates to an arrangement (1) for conveying of sheets (2a, b), comprising upper and lower receiving rolls (3, 4), an upper belt element (5) and a receiving surface (6). The belt element (5) extends in a region above the receiving surface (6). The sheets (2a, b) are conveyed in a substantially horizontal direction of movement (7) towards the receiving rolls (3, 4), which receiving rolls (3, 4) during rotation move the sheets (2a, b) one after another between and past the receiving rolls (3, 4), during which the respective sheet (2a, b), after passing between and past the receiving rolls (3, 4), are situated between said receiving surface (6) and upper belt element (5). The sheets (2a, b) between the upper belt element (5) and the receiving surface (6) are placed on one another such that a rear edge (8) of a sheet (2a) passing through and between the receiving rolls (3, 4) is overlapped by a front edge (9) of a following sheet (2b). A lifting means (10) situated in the sheet movement direction (7) after the receiving rolls (3, 4) is adapted to acting upon sheets (2a, b) passing through the receiving rolls (3, 4) and over the lifting means such that the front edge (9) of a sheet (2b) which has passed over and past the lifting means (10) assumes a shape which strengthens the sheet (2a, b) in the sheet movement direction (7).

대표청구항 ▼

1. An arrangement (1) for conveying of sheets (2a, b), which arrangement (1) comprises: an upper receiving roll (3),a lower receiving roll (4),at least one upper belt element (5) and a receiving surface (6), which upper belt element (5) extends in a region above the receiving surface (6),which sheet

1. An arrangement (1) for conveying of sheets (2a, b), which arrangement (1) comprises: an upper receiving roll (3),a lower receiving roll (4),at least one upper belt element (5) and a receiving surface (6), which upper belt element (5) extends in a region above the receiving surface (6),which sheets (2a, b) are conveyed in a substantially horizontal direction of movement (7) towards the receiving rolls (3, 4),which receiving rolls (3, 4) during rotation move the sheets (2a, b) one after another between and past the receiving rolls (3, 4),whereupon the respective sheets (2a, b), after passing through and between the receiving rolls (3, 4), are placed between said receiving surface (6) and upper belt element (5),which sheets (2a, b) between the upper belt element (5) and the receiving surface (6) are placed on one another such that a rear edge (8) of a sheet (2a) passing through and between the receiving rolls (3, 4) is overlapped by a front edge (9) of a following sheet (2b),characterized in that a lifting means (10) is situated in the sheet movement direction (7) after the receiving rolls (3, 4) and is adapted to acting upon sheets (2a, b) passing through the receiving rolls (3, 4) and over the lifting means such that the front edge (9) of a sheet (2b) which has passed over and past the lifting means (10) assumes a shape which strengthens it in the sheet movement direction (7);and that the lifting means (10) acts upon the front edge (9) in a forward portion of the sheet (2a, b), as viewed in a section through said forward portion of the sheet (2a, b) and transversely to the direction of movement (7) of the sheet (2a, b), by the sheet (2a, b) being conveyed over the lifting means so that the front edge (9) and the sheet (2a, b) assume a wavy shape comprising a number of ridges (11) and valleys (12), which ridges (11) and valleys (12) are parallel with the direction of movement (7), the sheet (2a, b) thus being stiffened in said direction of movement (7);wherein the lifting means (10) comprises a number of grooves (13) extending in the direction of movement (7) in a surface of the lifting means (10), which surface said sheets (2a, b) pass over;and the grooves (13) in the surface of the lifting means (10) are deeper on the side of the lifting means (10) which faces away from the receiving rolls (3, 4) than the grooves (13) in the portion of the surface of the lifting means (10) which is situated closer to the receiving rolls (3, 4); andthat said grooves (13) in the lifting means (10) are so configured that the upper belt element (5), by its configuration, fits in the grooves (13). 2. An arrangement (1) for conveying of sheets (2a, b) according to claim 1, characterized in that the grooves (13) are disposed in the lifting means (10) vertically below the respective bands of the upper belt element (5) which extend above said lifting means (10), the lifting means comprising at least as many grooves (13) as the number of bands of the upper belt element (5). 3. An arrangement (1) for conveying of sheets (2a, b) according to claim 1, characterized in that the lifting means (10) is an elongate means with a length corresponding to at least the width of a sheet (2a, b) which passes between the receiving rolls (3, 4), which lifting means (10) is situated parallel to said receiving rolls (3, 4). 4. An arrangement (1) for conveying of sheets (2a, b) according to claim 1, characterized in that the surface of the lifting means (10), which surface said sheets (2a, b) pass over, is adjustable by the lifting means (10) being adjustable in the height direction and rotatable about an axis through the lifting means (10). 5. An arrangement (1) for conveying of sheets (2a, b) according to claim 1, characterized in that the arrangement comprises an adjustable roll (14) situated in the direction of movement (7) of the sheet (2a, b) after and parallel to the receiving rolls (3, 4) at a distance such that the lifting means (10), as viewed in the direction of movement (7), is situated between the upper receiving roll (3) and the adjustable roll (14). 6. An arrangement (1) for conveying of sheets (2a, b) according to claim 1, characterized in that part of the upper belt element (5) extends partly in a first span (15) and partly in a second span (16), which first span (15) extends from an underside on the upper receiving roll (3) to an underside on the adjustable roll, which second span (16) extends in the direction of movement (7) from the underside on the adjustable roll (14) to an underside on an end roll (17), which first span (15) and second span (16) jointly form at their meeting point on the underside on the adjustable roll (14) an angle (18) of less than 180° upwards towards the upper belt element (5). 7. An arrangement (1) for conveying of sheets (2a, b) according to claim 1, characterized in that the angle (18) between the first and second spans (15, 16) becomes smaller upon movement of the adjustable roll (14) in a parallel direction towards the receiving rolls (3, 4). 8. An arrangement (1) for conveying of sheets (2a, b) according to claim 1, characterized in that the lifting means (10) acts upon the rear edge (8) of a sheet (2a, b) passing over the lifting means (10) such that said rear edge (8), after passing over and past the lifting means (10), is caused to move towards the receiving surface (6) at a speed higher than the speed which the receiving surface (6) has in its movement in a direction away from the receiving rolls (3, 4). 9. An arrangement (1) for conveying of sheets (2a, b) according to claim 1, characterized in that the receiving surface (6) is a continuous belt means which has an upper portion parallel with part of the upper belt element (5), which portion of the upper belt means and said part of the upper belt element (5) both run in the same direction of movement, which said part of the upper belt element (5) moves at a speed higher than the speed at which said portion of the belt means moves. 10. An arrangement (1) for conveying of sheets (2a, b) according to claim 1, characterized in that the movement of each sheet (2a, b) in the direction of movement (7), after passing over and past the lifting means (10), is reduced by the front edge (9) of the sheet reaching a braking wheel (21), whereupon the respective sheet (2a, b) is placed on top of a preceding sheet (2a, b) such that the respective front edge (9) of adjacent sheets (2a, b) on the receiving surface (6) overlaps the rear edge (8) of a preceding sheet on the receiving surface (6). 11. An arrangement (1) for conveying of sheets (2a, b) according to claim 1, characterized in that the movement of each sheet (2a, b) in the direction of movement (7), after passing over and past the lifting means (10), is halted by the front edge (9) of the sheet reaching a stop membrane (19), whereupon the respective sheet (2a, b) is placed on top of a preceding sheet (2a, b) in a stack on the receiving surface (6). 12. An arrangement (1) for conveying of sheets (2a, b) according to claim 1, characterized in that each time a sheet (2a, b) is placed on the receiving surface (6), the latter performs a downward movement (20) such that a vertical stack of sheets (2a, b) is created on the receiving surface (6).