| 摘要 |
In a device for rotating a stack of two-dimensional sheet-type or film-type products, or a stack thereof, at least two drive-roller pairs (11, 12; 13, 14) which are disposed beside one another so as to be spaced apart for conveying the products (1) are provided, the drive speed of said drive-roller pairs being modifiable in such a manner that the two roller pairs, oriented toward the same conveying direction, are operable at different speeds. |
| 主权项 |
1. A device for rotating two-dimensional sheet-type or film-type products, or a stack thereof, characterized by
at least two drive-roller pairs (11, 12; 13, 14) which are disposed beside one another so as to be spaced apart for conveying the products (1), and configured such that both the upper and lower rotating rollers are driven rollers, sensors configured to measure the position and speed of the products, and a controller configured to receive information from the sensors, the drive speed of said drive-roller pairs (11, 12; 13, 14) being modifiable in such a manner that the two roller pairs, oriented toward the same conveying direction, are operable at different speeds, whereby the speed of at least one of the roller pairs can be modified by the controller after engagement of the products by the two roller pairs in such a manner that products are rotated until the desired rotation is completed without interrupting conveying onward in a linear manner and to rotate products without permanently displacing a conveying axis of the products. |
