Device for cleaning roller surfaces of a drafting arrangement

A spinning preparation machine for processing a fiber material, comprising:

• a drafting system that moves the fiber material in a direction of conveyance, the drafting system comprising a plurality of roller pairs arranged one after the other with upper rollers and lower rollers;
• at least two elongated stripping devices, each stripping device comprising a stripping edge in contact with one of the upper rolls to remove dirt and other contaminants;
• a suction hood mounted above the stripping devices and connected to a vacuum source;
• each stripping device 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 mounted on a bottom wall having openings therein;
• each suction channel comprising a second opening opposite the first opening, the second opening aligned opposite from one of the openings in the bottom wall;
• and
• 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.