Method and arrangement for operating a creel for a winding machine and creel

Abstract

The warping unit has spools with packing machine rotating with an angular speed of threads. The yarn tenioner is controlled during a high driving procedure and / or a stop procedure of the winding machine to keep a thread tension of thread constantly with regard to the desired value (31). The thread tension is produced by the yarn tenioner with a variable braking force. The angular speed of the winding machine is measured during the high driving procedure and / or the stop procedure and converted into a thread speed, and the yarn tenioner is driven by the thread speed as input for the control. The braking force is calculated from the motor-specific parameters of driving motor of the yarn tenioner for controlling the yarn tenioner. A disturbance variable compensation (24) with the thread speed is calculated as input correction variable (34) around the motor inertia and the friction value of the driving motor for the determination of a correcting variable (32) for the braking force. The actual value of the thread tension of each thread is detected by a thread tension sensor and regulated by an automatic controller (25) on the desired value. Independent claims are included for: (1) control and regulator arrangement; and (2) a warp creel.

Description

Technical field [0001] The invention relates to a method for operating a creel of a winding device, an operating device and a creel according to the preamble of the independent claim. Using this method, we strive to obtain the best possible tension balance for all the yarns on the creel. This is because the different yarn running lengths between the bobbin position and the winding machine and the yarn passages associated with it are in Failure to make corresponding adjustments will result in different yarn tensions, and the result will be uneven package density. Background technique [0002] The operating method of the creel is known. In this method, the yarn tension of each yarn should be kept as close as possible to a constant rated value. Therefore, for example, European Patent Application Publication No. EP-A-1162295 discloses a method of operating a creel with multiple bobbin positions for warping equipment. In this method, each yarn is used at each bobbin position. The yarn...

AI Technical Summary

Problems solved by technology

But in other working conditions, especially in the process of accelerating or stopping, this adjustment is usually impossible

Especially for winding installations with long yarns between the creel and the winding machine, the operation of this method proves to be difficult

For fast processes, especially when the winding machine is accelerated or stopped, long yarns may vibrate due to rapid tension adjustment during yarn tension adjustment

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