HU189947B - Method for controlling the winding process of material path - Google Patents

Abstract

The invention relates to a method for controlling the winding process of preferably weblike materials. The invention has the aim of specifying a method for controlling the winding process of preferably weblike materials, in order, by specific control of the tensile force in the material to be wound, to prevent tearing of the said material on the one hand and to ensure that winding is sufficiently taut and even on the other. The object is achieved according to the invention in that the tensile force in the material to be wound is adjusted by controlling the torque at the winding device. The said torque can be shown as a function of the desired tensile force in the material to be wound and of the radius of the material which has already been wound. To determine the current radius of the reel in the winding device, which radius changes during the winding process, the angular speeds of both the winding device and of a measuring roller with a constant diameter which is mounted upstream of the winding process are measured. The invention can be used in the areas of engineering which concern processes for winding preferably weblike materials and in which a specific tensile force of the material to be wound is necessary.

Description

The present invention relates to a process for controlling a material web winding process.

The present invention is primarily directed to controlling the tensile force in the material web. It can be used in all cases where a process material is to be rolled up and a predetermined tensile force must be created in the material to be wound.

In summary, prior art solutions are characterized by the fact that the pulling force generated in the material path is not at all controlled, controlled, or, in the case of some influence, mostly unsatisfactory. Even in these latter cases, the torque 15 required to generate the traction force is driven by the drive machine components, e.g. Induction couplings are controlled either empirically or as a function of time or winding length, or a combination thereof. 20

On the one hand, known processes have led to the rupture of the material to be wound, since the tensile strength of the material to be wound has often been exceeded. In other cases, however, coils were formed which were of varying strength due to strong fluctuations in tensile force in the material to be wound. In the unfavorable case, such loose rolls could be formed, which impaired the quality of the product and resulted in waste due to damage during transportation, storage and rewinding.

No. 123,254. GDR patent describes a method and apparatus for measuring the torque of a synchronous molar, particularly for high speed winders of synthetic fibers, for speed control of circumferentially driven coil windings, wherein the circumferentially driven coil winding body 40 is used. Even this relatively sophisticated process is only capable of generating a relatively small force in the material web to be wound.

The object of the present invention is to overcome the drawbacks of the known processes, and to provide a method for controlling the process of winding the material spool, which on the one hand avoids tearing the material to be wound and on the other hand creates 50 sufficiently rigid, solid and uniform rolls. To do this, the winding process must be controlled such that the tensile force in the material to be wound is always the same as the material to be wound, regardless of the winding speed and the diameter of the winding, which varies during the winding process.

In the further development of the invention, the tensile stress corresponding to the material to be wound is measured by the targeted control of the torque of the winding machine in the wrapping material by measuring the angle of rotation of the winding machine and the constant diameter This torque can be characterized as a function of the required tensile force in the material to be wound and the eugure of the material already wound.

In one preferred embodiment, the evaluation may be performed using self-destructive means.

Further details of the invention will be illustrated by reference to the accompanying drawings in connection with an exemplary embodiment. The sole figure in the drawing illustrates a preferred embodiment of the process of the invention in schematic form.

An appropriately sized stripping resistor from the manufacturing plant is introduced by touching the measuring roller 2 to the winding machine 3. The winding machine 3 is provided with a drive 5 whose torque is adjustable.

The rotational speed of the measuring roller 2 and the winding machine 3 is measured by interrogating the transmitter 4 at appropriate intervals. The measurement results are evaluated by means of 6 microcomputers, in which the required winding power is properly fed.

Since the measuring roll 2 and the roll in the winding machine 3 are interconnected by the material web 1 to be wound and thus have the same circumferential velocity, the rotation angle f 1 of the winding machine 3 has a rotation f 1 of the winding machine 3. decreases. With the help of said microcomputer 5, the actual diameter of the coil is determined by the relationship d > - > U 'Ti, and the drive 5 of the coil machine 3 is controlled by the required torque determined by the desired lenses.

Claims (2)

Claims 1. A method for controlling the process of winding a material piercer, comprising: providing targeted control of the torque of the winding machine in the material path to be wound by providing a tensile stress corresponding to the material to be wound, -constant torque is generated. Method according to claim 1, characterized in that the evaluation is carried out by means of an esamilo tool known per se.