Benninger Ag

Hans-Peter Zeller

Manfred Bollen

Anton Spari

Stefan H&auml;ne

Markus Beerli

Hans-Peter Gemperli

At least one thread tension sensor for each thread is provided on a winding machine. The actual value of thread tension is measured for each thread. The actual value is compared with a specified value in a comparator device and, in the event of a deviation being determined between the actual value and the specified value, a drive motor is actuated to adjust the thread brake of the thread concerned. This arrangement allows for the maintaining of a constant thread tension by a control circuit. The thread tension sensor can be used not only to control the thread tension, but also to monitor the specified thread tension range, and as a thread break monitor.

Process for the operation of a bobbin creel and bobbin creel for a winding system

Method of measurement of the total length of a yarn formed winding material (3) running onto a wound package (1), in particular a yarn web running onto the winding beam of a winding machine. During continuous winding operation, the length is ascertained by means of a measuring roll (2) over which the material to be wound (3) is guided. During acceleration and braking procedures, slippage occurs between the material to be wound (3) and the measuring roll (2). On occurrence of slippage, the system of measurement is changed, and the length of the wound package is determined from the rotational speed of the wound package (.omega..sub.w) and the circumference of the wound package (1). The circumference of the wound package (1), as well as the increase of the wound package circumference per rotation of the wound package, are ascertained during continuous winding operation.

Method of measuring the length of winding material running onto a

Separate drive motors (30, 35) for the positioning of the warping carriage (25) in the X-, respectively the Y-direction, are provided on a cone section warping machine. In addition to that, separate servo signals for both the servo motors (30, 35) are generated, whereby not only the absolute value of the servo signals but also their relationship to one another is stored and is able to be corrected through correction values. For the correction, a program control device (62) and/or a regulator (67), respectively correction circuits (64, 66), are provided.

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Flawil, Switzerland

Hans-Peter Zeller