Method and device for the optimal use of windable material during winding up and/or unwinding

Abstract

A method and a device for optimal use of windable material during winding up onto and/or unwinding from storage drums operates in conjunction with feeding to winding machines. The windable material can be a textile web, a fabric web, a wire or the like. A counterforce necessary for keeping the tension force acting on the windable material constant is maintained until all of the windable material has been fed into subsequent processing. The counterforce may be maintained by a connecting element that is connected to the windable material and to the storage drum, is able to be wound up, and is of lower quality than the windable material. In the device, controllable means generate the counterforce counteracting the tension force until all of the windable material has been drawn into the subsequent processing device.

Claims

1. A method for optimal technological integration of a windable material during winding and unwinding, wherein a counterforce required for stabilization of a tension force acting on the windable material is maintained until the windable material has been completely fed to subsequent further processing, wherein the counterforce is generated by a braking device arranged at an entry of a winding machine after the windable material has been completely unwound and an end of the windable material has subsequently detached from a storage drum, wherein a braking operation effected by the braking device is triggered by sensory detection of a marking applied to the windable material, and wherein a timing of the braking operation is controlled by a subordinated controller.

2. The method according to claim 1, wherein the counterforce is maintained by a connecting element which is connected to the windable material and to a storage drum, is windable, and is comparatively inferior to the windable material, and wherein one end of the connecting element is connected to the storage drum and an opposite end of the connecting element is connected to one end of the windable material.

3. A device for optimal technological integration of a windable material during winding and unwinding, comprising: a controllable counterforce generator which generates a counterforce counteracting a tension force, by means of which the counterforce counteracting the tension force is maintained until the windable material has been completely fed into a subsequent processing device, wherein a braking device comprises at least two magnetic field generators for generating a braking force counteracting the tension force in an electrically conductive windable material.

4. The device according to claim 3, wherein a windable connecting element having a maximum length corresponding to a distance between a storage drum and an entry point into a winding machine has a first end detachably connected to the storage drum and a second end connected to a beginning of the windable material.

5. The device according to claim 3, wherein a braking device comprises at least two pressure assemblies which roll on the windable material and generate a braking force counteracting the tension force.

6. A device for optimal technological integration of a windable material during winding and unwinding, comprising: a controllable counterforce generator which generates a counterforce counteracting a tension force, by means of which the counterforce counteracting the tension force is maintained until the windable material has been completely fed into a subsequent processing device, wherein an end of the windable material to be connected to a storage drum is connected to the storage drum by a controllable connection module attached to the storage drum, wherein the connection module is controlled by a controller which controls a release of the end of the windable material upon completion of an unwinding process, and wherein the controller is connected to a sensor serving to detect a marking on the windable material and to a braking device.

7. The device according to claim 6, wherein the connection module attached to the storage drum includes a release mechanism which automatically separates the windable material from the storage drum upon completion of the unwinding process.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 shows a schematic arrangement of the windable material connected to the connecting material in the unwinding of the storage drum.

(2) FIG. 2 shows a schematic arrangement of the modules involved in the controlled unwinding of the windable material from the storage drum by a braking device.

DETAILED DESCRIPTION

(3) The schematic arrangement shown in FIG. 1 shows the storage drum 2 with windable material 1 (e.g. copper wire) already unwound from it. The transport path provided between the storage drum 2 and the following winding machine 4 serves for the technological preparation of the windable material 1 for further processing by the winding machine 4. This preparation may, for example, consist of the required stretching of the windable material 1 for the feed into the winding machine 4. The required stabilization of the tension force for unwinding, processing, and transport to the winding machine 4 here is effected by the counterforce applied by the storage drum 2. After unwinding, this required counterforce is no longer available. The remaining stretched windable material 1 between the storage drum 2 and the winding machine 4 is separated after the unwinding of the storage drum 2 and cut at the entry point to the winding machine 4. This part of the windable material 1 then accumulates as secondary raw material. Depending on the planned production line, the length of this transport section is between 5-8 m. If the winding material 1 is made of copper wire, the weight of the technologically unused material per storage drum 2 is about 1 kg up to 10 kg for average cross-sections used. The aim of the present solution is to fully integrate this part of the windable material 1 in the technological process sequence and thus make it usable. For this purpose, a compared to the windable material 1 inferior connecting material 3 is connected to one end of the windable material 1 and wound right at the front during the winding onto the storage drum 2. After the completion of the unwinding, this connection material 3 in conjunction with the storage drum 2 takes over the generation of the counterforce for maintaining a constant tension force. By the predetermined length of the connection material 3, at the same time, the target of how far the windable material 1 is to be fed into the winding machine 4 is being set.

(4) The schematic representation of FIG. 2 shows the arrangement of the required modules for a controlled unwinding of the storage drum 2. In this arrangement, the braking device 5 takes over the generation of the counterforce after the completed unwinding. This braking device 5 is arranged directly at the entry point of the winding machine 4. This arrangement is controlled by the controller 7. In this case, the controller 7 may be a part of the already existing central control on the winding machine 4 or the control can be taken over by this central control. Rollers can be used as a braking device 5, which rest on the surface of the windable material 1 and run with the winding material 1. Depending on the shape of the surfaces of the windable material the required pressure of the rollers for the generation of the braking force can be distributed to a plurality of braking devices arranged along the transport path. When using windable material 1 with a pressure-sensitive surface (insulation), there may be the risk of damage to the surface material by using rollers. In order to avoid this damage, the braking device 5 can be formed in the case of winding material 1 made of electrically conductive material, for example, as a magnetic field generating device. When winding or feeding a multi-core windable material 1, the braking process for all wires of the winding material 1 is carried out simultaneously. The detachable attachment of the windable material 1 to the storage drum 2 is provided by the connection module 6. By the connection module 6, not shown here, the windable material 1 is held by the support of the winding on the connection module 6. The winding itself compresses a spring element and holds by forceps action the end of the windable material 1 firmly in position until the unwinding or the release of the spring tension. Likewise, the holding and releasing operation can be controlled by an electromechanical module by the controller 7. On the surface of the windable material 1 a marking is applied, which is detected by a sensor 8 during transport and signals the detection to the controller 7. The signal indicates the reaching of a predetermined position for a remaining length of the windable material 1. The signal is evaluated by the controller 7 and triggers the braking operation of the braking device 5. At the time of complete unwinding and detachment of the windable material 1 from the storage drum 2 the controlled braking device 5 takes over the generation of the required counterforce. Until reaching a predetermined position the feed of the windable material 1 is controlled by the controller 7 which is signal-technologically connected to the winding machine 4.

REFERENCE NUMERALS

(5) 1 windable material 2 storage drum 3 connecting element 4 winding machine 5 braking device 6 connection module 7 controller 8 sensor