Patent ID: 9073717
Filing Date: 2015-07-07
Classification: B65H

Abstract:
1. A coreless paper roll rewinding machine without a winding assisting plate, comprising a rewinding upper roller and a rewinding lower roller which are parallel to each other, a piece of paper having a predetermined thickness is wound on the rewinding upper roller and passes through a roller gap between the rewinding upper roller and the rewinding lower roller, the roller gap being located where the rewinding upper roller and the rewinding lower roller are closest to one another, the rewinding machine characterized in that the roller gap between the rewinding upper roller and the rewinding lower roller is no more than 10 mm and is greater than the thickness of the piece of paper; a plurality of air flow channels are arranged in a roller body of the rewinding lower roller, the plurality of air flow channels are arranged spaced apart along a circumference of the lower roller body; each air flow channel is interconnected with a set of air suction holes provided on a surface of the rewinding lower roller; the set of air suction holes, which is interconnected with the same air flow channel, is arranged in one or more rows on a surface of the lower roller body; each row of air suction holes is arranged along air flow channels in the lower roller body; respective rows of air suction holes are arranged spaced apart along the circumference of the lower roller body; an air suction cover is arranged in a position close to the end of the rewinding lower roller; as the rewinding lower roller rotates, when a certain row of the air suction holes on the surface of the rewinding lower roller is gradually closing toward the roller gap between the rewinding upper roller and the rewinding lower roller, the air flow channel in the lower roller body, which is interconnected with the row of air suction holes, is rotated to a region where it interconnects with an exhaust opening of the air suction cover; when a certain row of the air suction holes on the surface of the rewinding lower roller are gradually rotating away from the roller gap between the rewinding upper roller and the rewinding lower roller, the air flow channel in the lower roller body, which is interconnected with the row of air suction holes, is rotated to a region where it deviates from the exhaust opening of the air suction cover.