A spinning preparation machine for processing a fiber material includes a drafting system that moves the fiber material in a direction of conveyance and includes a plurality of roller pairs arranged one after the other with upper rollers and lower rollers. Elongated stripping devices having a stripping edge are in contact with the upper rolls to remove dirt and other contaminants therefrom. A suction hood is mounted above the stripping devices and is connected to a vacuum source. Each stripping device is mounted in an individual respective suction channel, and the stripping edge of the stripping device protrudes through a first opening in the respective suction channel. Each suction channel is mounted on a bottom wall having openings therein and includes a second opening opposite the first opening that is aligned opposite from one of the openings in the bottom wall. The suction hood protrudes beyond the openings in the bottom wall and is mounted on a side of the bottom wall opposite the suction channels.

The invention relates to an apparatus on a spinning preparation machine having a drafting system (1) for processing a fiber material (G) which is moved by the drafting system in the direction of conveyance (F), including a plurality of roller pairs arranged one after the other with upper rollers and lower rollers (2, 3; 4, 5; 6, 7), having at least two elongated stripping devices (9) which are each in contact with one of the upper rolls (3, 5, 7) along their stripping edges (K) for removing dirt and other contaminants, and having a suction hood (AH) which is mounted above the stripping devices (9) and is connected to a vacuum source (U). To avoid accumulations of components that have been stripped off the rollers in the area of the stripping devices and to improve the suction effect, it is proposed that each stripping device (9) be mounted in its own suction channel (11, 12, 13), wherein the stripping edge (K) of the respective stripping device (9) protrudes beyond its suction channel in the area of a first opening (O1), and the individual suction channels are each mounted on a bottom wall (8) provided with openings (B1, B2, B3), wherein the respective suction channel (11, 12, 13) is provided with a second opening (O2) opposite the first opening (O1), this second opening being opposite one of the openings (B1, B2, B3) of the bottom wall (8), wherein the suction hood (AH) protrudes beyond the openings (B1, B2, B3) of the bottom wall and is mounted on the side of the bottom wall (8) which is opposite the suction channels (11, 12, 13).