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BR-112021013352-B1 - PROCESS AND DEVICE FOR STRAIGHTENING WIRE OR TAPE MATERIAL

BR112021013352B1BR 112021013352 B1BR112021013352 B1BR 112021013352B1BR-112021013352-B1

Abstract

PROCESS AND DEVICE FOR STRAIGHTENING WIRE OR TAPE MATERIAL. The present invention relates to a process for straightening wire or tape material by means of a straightening device with straightening rollers (3, 4, 6, 10), which act alternately on opposite sides of the material (1) being passed, some of which are automatically set in operation according to a model, which has been stochastically determined by means of input data from the material (1) and the straightening device and data determined during the passage of the wire through the straightening device, so that the straightening requirements are satisfied, the position of at least one straightening roller being continuously adapted due to the aforementioned data detected during the passage through the straightening device, which are representative of the straightening obtained, such as (i) the size and direction of the forces acting on the straightening rollers, on the straightening rollers themselves and/or (ii) the temperature of the material before and after passing through the arrangement of straightening rollers and/or (iii) the position of the material (1) is then measured on each of the straightening rollers and the measurement values obtained are entered into the model (...).

Inventors

  • ARNDT MÜHLENFELD
  • Walter Resch

Assignees

  • EVG ENTWICKLUNGS- U. VERWERTUNGS-GESELLSCHAFT MBH

Dates

Publication Date
20260310
Application Date
20200128
Priority Date
20190228

Claims (9)

  1. 1. Process for straightening wire or strip material by means of a straightening device with straightening rollers (3, 4, 6, 10), which act alternately on opposite sides of the material (1) being passed, some of which are automatically set in operation according to a model, which has been stochastically determined by means of input data of the material (1) and the straightening device and data determined during the passage of the material (1) through the straightening device, so that the straightening requirements are satisfied, the position of at least one straightening roller being continuously adapted due to the aforementioned data, detected during the passage through the straightening device, which are representative for the intended straightening, characterized in that (i) the size and direction of the forces acting on the straightening rollers (3, 4, 6, 10), on the straightening rollers themselves and/or (ii) the temperature of the material (1), before and after passing through the arrangement of straightening rollers (3, 4, 6, 10) and/or (iii) the position of the material (1) is then measured on each of the straightening rollers and the measurement values obtained are entered into the model that controls the start-up of the straightening rollers (6, 4, 10) to be put into operation.
  2. 2. Process according to claim 1, characterized in that the temperature of the wire or tape material is measured at the exit of each straightening roll (3, 4, 6, 10).
  3. 3. Process according to claim 1 or 2, characterized in that for determining the forces acting on the straightening rollers (3, 4, 6, 10) by means of tension gauges (17) arranged on the bearing pins (12) of the straightening rollers (3, 4, 6, 10), the bending moments are measured in the axial, vertical and/or horizontal direction.
  4. 4. Process according to any one of claims 1 to 3, characterized in that the measurement of the position of the wire or tape material, then to each of the straightening rollers (3, 4, 6, 10), is a measurement of the deviation of the material (1) from the passage axis in or parallel to the direction of entry into operation of the straightening rollers (3, 4, 6, 10).
  5. 5. Process according to any one of claims 1 to 4, characterized in that, in addition, the vibrations that occur in the wire or tape material being passed are measured and the measurement value is also introduced into the model, which controls the start-up of the straightening rollers (4, 6, 10) to be straightened.
  6. 6. Process according to any one of claims 1 to 5, characterized in that two straightening devices are passed successively through the wire or tape material, one straightening device having straightening rollers (3, 4, 6, 1) arranged horizontally and the other, straightening rollers arranged vertically.
  7. 7. Device for carrying out the process of straightening wire or strip material as defined in any one of claims 1 to 6, with a straightening device, with two rows arranged alternately longitudinally to each other, of non-actuated straightening rollers (3, 4, 6, 10), which in operation act on a material (1), which is passing between the rows to straighten it, wherein some straightening rollers (6, 4, 10), depending on a model, automatically controlled, are set in operation in such a way on the material (1) that the requirements for straightening the material exiting the straightening device are satisfied, wherein the model is determined stochastically, based on the input data of the material (1) and the data of the straightening device, detected in the straightening device and the material, characterized in that the straightening rollers (3) of a row, which first act on the material (1), have stationary axes. and the straightening roller (4), which subsequently acts on the same side of the material, is set in motion individually on the passing material (1), and the straightening rollers (6, 10) of the opposite row are all set in motion on material (1), wherein the straightening rollers (6) of that row, which act first on material (1), are set in motion together and the straightening roller (10) of the same row, which subsequently acts on material (1), is set in motion individually, and the size and direction of the forces acting on the straightening rollers (3, 4, 6, 10) are measurable by means of measuring devices arranged on them, such as strain gauges (17), as well as the temperature of material (1) is measurable by means of measuring devices (16) arranged at the inlet and outlet of the straightening device, all the measurement values obtained being fed into the model that controls the start-up. of the straightening rollers (6, 4, 10) to be put into operation.
  8. 8. Device according to claim 7, characterized in that the temperature of the material (1) is measurable following one or more straightening rollers (3, 4, 6, 10), by means of measuring devices arranged therein, and all the measurement values obtained are fed into the model that controls the start-up of the straightening rollers (6, 4, 10) to be put into operation.
  9. 9. Device according to claim 7 or 8, characterized in that the position of the material (1) is measurable after one or more straightening rollers (3, 4, 6, 10) by means of measuring devices, in each case arranged therein, and all the measurement values obtained are fed into the model that controls the start-up of the straightening rollers (6, 4, 10) to be put into operation.

Description

[0001] The invention relates to a process for straightening wire or tape material by means of a straightening device with straightening rollers that act alternately on opposite sides of the passing material, some of which are automatically set in motion according to a model that has been stochastically determined by means of input data from the material and the straightening device, which have been determined during the passage of the material through the straightening device, so that the requirements of the straightening unit are satisfied, wherein the position of at least one straightening roller is continuously adapted due to data detected during the passage through the straightening device, which are representative for the intended straightening. [0002] A process of this type is described in document DE-A-196 53 569. This document, however, only speaks in a very general way about product and/or process data, measured during the ongoing straightening process, which are entered online into the model and modify it, without specifying the measurements necessary for this purpose. It is also unclear whether and to what extent the model allows a conclusion about the exact geometry of the final straightened product. [0003] The invention proposes to provide a control circuit for an autonomous process to straighten material with variable, unknown curvature. The process must reliably ensure the intended straightening of the straightened wire. [0004] This is achieved in the process mentioned initially by the fact that (i) the size and direction of the forces acting on the straightening rolls, on the straightening rolls themselves and/or (ii) the temperature of the material, before and after passing through the straightening roll arrangement and/or (iii) the position of the material is then measured on each of the straightening rolls and the measurement values obtained are entered into the model that controls the start-up of the straightening rolls to be put into operation. [0005] Advantageously, the material temperature is measured at the outlet of each straightening roll or each straightening block. [0006] The measurement (i) of the forces acting on the straightening rollers is conveniently carried out by means of tension gauges arranged on the bearing pins of the straightening rollers, which measure the bending moments in the axial, vertical and/or horizontal directions. [0007] The measurement (ii) of temperature detects the strain energy introduced into the material to be straightened. This measurement can optionally be used to correct material properties that enter the model. It is possible that this measurement is only performed at the beginning of a straightening process or to calibrate a straightening device. [0008] The measurement (iii) of the material position conveniently occurs after each of the straightening rolls by measuring the material deviation from the passage axis in the direction of the straightening rolls' start-up. For this purpose, optical or non-contact (e.g., magnetic) measurement processes are of interest. This also applies, moreover, to the convenient measurement of vibrations occurring in the passing wire material, the measurement value of which is also entered into the model controlling the start-up of the straightening rolls to be put into operation. It is conceivable that the measurement position (iii) is only performed at the beginning of the process for calibration purposes, while in the ongoing service the measurement of the forces acting on the straightening rolls is sufficient for carrying out the process according to the invention. [0009] Advantageously, two straightening devices, such as those mentioned above, are passed one after the other through the material, one straightening device having straightening rollers arranged horizontally, and the other, straightening rollers arranged vertically. [0010] The invention relates, moreover, to a device for carrying out the process according to the invention, with a straightening device, with two rows arranged alternately longitudinally to each other, of non-actuated straightening rollers, which in operation act on a wire that is passing between the rows to straighten it, wherein some straightening rollers, depending on a model, controlled automatically, can be set in operation in such a way on the material that the requirements for straightening the material exiting the straightening device are satisfied, wherein the model, based on the input data entered from the wire and the data from the straightening device, detected in the straightening device, and in the material, is determined stochastically. A device of this type is mentioned in the document DE-A cited initially. [0011] In such a device, the invention consists in the fact that the straightening rollers of a row, which initially act on the material, have stationary axes and the straightening roller, which subsequently acts on the same side of the material, can be set in operati