Adjustment to the working gap between the facing points of the clothing of revolving flats and the carding drum, at a carding machine, has a spring or piezo-electric unit at each flat to set its height

摘要

To set the working gap between the points of the revolving flat clothing and the peaks of the carding drum clothing, the radial height from the sliding surface (164) for the revolving flat heads (146) is adjusted against the tips of the carding drum clothing. To set the working gap between the clothing of the revolving flats and the carding drum, each revolving flat has an adjustment unit (196) in or on it, to set the working gap between clothings. The adjustment unit can be piezo-electric, with an electrical control, or it can be a pliable spring (196) which is set by the tension of a belt which carries the revolving flats along the sliding surface. The position of the sliding surface, for the revolving flats, can be altered to adjust the radial gap between the clothing peaks of the revolving flats and the carding drum. An Independent claim is included for a system to adjust the working gap between the points of the revolving flat and carding drum clothings, with a control unit to set the voltage for the piezo-electric units at each revolving flat from a common voltage supply. Preferred Features: The belt which takes the revolving flats along their sliding path makes contact with an electrical path, as the circuit to supply each piezo-electric unit with electricity at each revolving flat, using contact brushes. The continuous belt for the revolving flats passes around toothed disks and deflection rollers, with an electrical contact for the belts through each toothed disk or deflection roller. Each belt has two contact paths. Where each revolving flat has a pliable spring to set its position, the belt tension to adjust the spring position is determined by a controlled brake, which acts directly or indirectly at a toothed disk where the belt path is deflected. A motor gives a controlled drive to the belt toothed disk, with a control to set the motor power. The revolving flat adjustment spring can be fitted with an oscillation damper. The revolving flat spring is a pliable and elastic plate, held at the revolving flat by a spring clip (190). Or they are leaf springs between a fixed and a moving section of the revolving flat. Each multi-part revolving flat has an exchangeable spacer.