The device on a card comprising a cylinder feeder, and at least a taker-in

摘要

In a device on a card comprising a cylinder feeder, and at least a taker-in cylinder, the feeder, rotating at low speed is equipped with a lining of saw teeth, for example a steel wire saw teeth, and the fibrous material is liable to be transported with the flank of the teeth directed in the direction of rotation. In order to permit transport of the fibrous material, and to allow a more accurate detection of the fluctuations of material, the tooth height (h2) to the - the top of the surface of the rolls and the height of gap between teeth (h3) are small in order to obtain a small volume for filling the angle of the rear face (gamma) rises to 90o or approximately 90o and the spacing of the teeth (t) and the length of steps are high in order to obtain an open space around the teeth.