A carding engine having a rotatable hollow carding cylinder (5). The inner surface of the cylinder is formed with a fluid-conveying pathway (18 to 21) in a pattern such that fluid circulated through the pathway will maintain the surface temperature of the cylinder substantially uniform. Means are provided for circulating fluid through the pathway in such a way that during operation the pathway is maintained full of fluid.
A cooling system and method for a carding machine having covering elements covering the swift of the card and a revolving flats arrangement defining the main carding zone. Heat is removed from the covering elements and/or the revolving flats arrangement by passing a heat-receiving medium, such as a liquid or gas, through ducts formed in covering element segments and/or between adjacent flats of the revolving flats arrangement.
A carding machine includes a main carding cylinder including a cylindrical jacket having an outer surface; a cylinder clothing carried on the outer jacket surface; and radial supporting elements supporting the cylindrical jacket. The carding machine further has a machine element defining a radial clearance with the cylinder clothing; two stationary lateral shield plates flanking the main carding cylinder; and an arrangement for reducing heat removal from the lateral shield plates to adapt a heat-caused expansion of the lateral shield plates to a heat-caused expansion of the main carding cylinder.
A carding machine comprises a main carding cylinder and parts which are adjustable relative thereto, such as a licker-in, a stationary flat, a revolving flat and a doffing cylinder, such parts preferably having a nominal spacing relative to the main carding cylinder. For checking a spacing, namely an existing spacing or an already adjusted spacing between the main carding cylinder and the aforesaid parts arranged opposite thereto, there is provided a sensor at at least one end or end portion of the main carding cylinder, but preferably at each one of the two ends or end portions thereof, such sensor or respective sensors being connected to an electronic evaluation unit by means of a coupling device.
A ventilated carding cylinder for allowing heat generated in the carding cylinder during operation to be dissipated. The carding cylinder includes an internal, longitudinally extending, air flow passage and impeller means provided therein for moving air through the air flow passage during operation of the carding cylinder. This movement of air aids in dissipating heat generated by the carding cylinder during the fiber carding process. Reduction of heat in the carding cylinder can minimize the risk of fire occurring in the fibers and also thermal growth of the cylinder during operation.
