Method and device for testing the tension of a metal braid

Abstract

This application discloses a method and apparatus for testing the tension of metal braided wires. The method includes: constructing a tension region for the braided threads in the metal braided wire; determining the lead-in position, inflection point position, and lead-out braiding position within the tension region; determining the reference tension of the braided threads within the tension region; obtaining a target angle between the reference direction and the target direction in the braiding mechanism, using the line connecting the lead-in position and the inflection point position as the reference direction and the line connecting the inflection point position and the lead-out braiding position as the target direction; and determining the target tension based on the target angle and the reference tension. The method for testing the tension of metal braided wires in this application is simple and can accurately calculate the corresponding tension using the inclination of each braided thread. This allows for the specific numerical value to characterize the tension, enabling precise control of the tension of each braided thread during the metal braiding process.

Description

Technical Field

[0001] This application relates to the field of metal processing and manufacturing technology, and in particular to a method and apparatus for testing the tension of metal braided wire. Background Technology

[0002] Currently, the braiding of metal braided wires, especially superconducting wires, is mostly based on, for example... Figure 1 The braiding mechanism shown is complete, in which each braiding thread is based on Figure 2 and Figure 3 The shuttle frame shown realizes feeding and tensioning, and the tension of the braided yarn is an important factor affecting the surface quality of the formed wire.

[0003] In existing technologies, operators mostly rely on professional theoretical knowledge and practical work experience to measure the tension of the braided threads at each position, which has problems such as poor tension accuracy and high operating threshold, thus limiting the forming quality of metal braided threads. Summary of the Invention

[0004] This application provides a method and apparatus for testing the tension of metal braided wires, which solves the problems of poor tension accuracy and high operating threshold in the prior art, where operators rely on professional theoretical knowledge and practical work experience to measure the tension of braided wires at various positions.

[0005] On one hand, embodiments of this application provide a method for testing the tension of metal braided wire, including:

[0006] Construct the tension zone of the braided wires in the metal braided wire, and determine the lead-in position, inflection point position and lead-out braiding position in the tension zone;

[0007] Determine the reference tension of the braided yarn in the tension zone;

[0008] Using the line connecting the guide position and the inflection point position as the reference direction, and the line connecting the inflection point position and the exit weaving position as the target direction, obtain the target angle between the reference direction and the target direction in the weaving mechanism;

[0009] The target tension is determined based on the target angle and the reference tension.

[0010] On the other hand, embodiments of this application provide a metal braided wire tension testing device, comprising:

[0011] The region construction module is used to construct the tension region of the braided wires in the metal braided wire, and to determine the guide position, inflection point position and the exit braid position in the tension region.

[0012] The data acquisition module is used to determine the reference tension of the braided yarn in the tensioning area, and to obtain the target angle between the reference direction and the target direction in the braiding mechanism, with the line connecting the guide position and the inflection point position as the reference direction and the line connecting the inflection point position and the exit braiding position as the target direction.

[0013] The tension calculation module is used to determine the target tension based on the target angle and the reference tension.

[0014] The method and apparatus for testing the tension of metal braided wire disclosed in this application have the following advantages:

[0015] The method for testing the tension of metal braided wire in this application is simple and can accurately calculate the corresponding tension by utilizing the inclination of each braided filament. This allows for the specific value to characterize the tension, thereby enabling precise control of the tension of each braided filament during the metal braiding process. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of a weaving mechanism in the prior art;

[0018] Figure 2 This is a schematic diagram of the weaving state of a shuttle frame in the prior art;

[0019] Figure 3 This is a schematic diagram of the structure of a shuttle frame in the prior art;

[0020] Figure 4 A flowchart illustrating a method for testing the tension of a metal braided wire, as provided in this application embodiment;

[0021] Figure 5 A schematic diagram illustrating the measurement of minimum tension force provided in an embodiment of this application;

[0022] Figure 6 This is a schematic diagram illustrating the measurement of maximum tension force as provided in an embodiment of this application. Detailed Implementation

[0023] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0024] Figure 4 A flowchart illustrating a method for testing the tension of a metal braided wire according to an embodiment of this application. This application provides a method for testing the tension of a metal braided wire, including:

[0025] S400, construct the tension zone of the braided wire in the metal braided wire, and determine the guide position, inflection point position and exit braid position in the tension zone.

[0026] For example, Figure 1 The weaving mechanism shown has multiple such Figure 2 and Figure 3 The shuttle frame shown, and in Figures 1 to 3 In the diagram, the guide position, the inflection point position, and the exit weaving position are represented by three locations: A, B, and C, respectively. The shuttle frame has a guide position A and an inflection point B that tend to move away from each other under the action of a spring or a magnetic ring. Based on this, when the weaving thread passes around the guide position A and the inflection point B, the mutual movement of the guide position A and the inflection point B can keep the thread taut.

[0027] S410 determines the reference tension of the braided yarn in the tension zone.

[0028] For example, the reference tension includes a minimum tension and / or a maximum tension. The minimum tension refers to the tension force experienced by the braided yarn within the tensioned area when the target direction is parallel to the reference direction. The minimum tension is determined by passing the braided yarn sequentially through guide position A and inflection point B parallel to the reference direction, ensuring that the braided yarn remains parallel to the reference direction outside of inflection point B. In this state, the current tension of the braided yarn can be measured using existing force measuring equipment such as a tension meter, thereby obtaining the minimum tension force that the current shuttle can provide to the braided yarn. Figure 2 As shown, the tension meter can be placed at point a, and the braided yarn can be connected to the tension meter at point a to perform the test.

[0029] Maximum tension refers to the tension force borne by the braided yarn within the tensioned area when the target direction is perpendicular to the reference direction. The method for determining this maximum tension force is as follows: the braided yarn is passed sequentially through guide position A and inflection point B, parallel to the reference direction. Outside inflection point B, the direction of the braided yarn is changed until it is perpendicular to the reference direction. In this state, the current tension of the braided yarn can be measured using existing force measuring equipment such as a tension meter, thus obtaining the maximum tension force that the current shuttle frame can provide to the braided yarn. Figure 2 As shown, the tension meter can be placed at point b, and the braided yarn can be connected to the tension meter at point b to perform the test.

[0030] S420: Using the line connecting the guide position and the inflection point position as the reference direction and the line connecting the inflection point position and the exit weaving position as the target direction, obtain the target angle between the reference direction and the target direction in the weaving mechanism.

[0031] For example, such as Figure 5 and 6 As shown, the direction of the line connecting the inflection point B and the derived weaving position C, i.e. the target direction, is the actual direction of the braided yarn in the braiding mechanism. However, under the aforementioned minimum tension and maximum tension, it is necessary to manually change the direction of the braided yarn in the actual braiding mechanism to achieve the effect of the reference direction and the target direction being parallel or perpendicular.

[0032] S430, determine the target tension force based on the target included angle and the reference tension force.

[0033] For example, since the reference tension force includes three cases: using only the minimum tension force, using only the maximum tension force, and using both the minimum and maximum tension forces, this application describes the process of calculating the target tension force for each of the three cases.

[0034] When using only the minimum tension force, after measuring the minimum tension force, the target tension force is determined according to the following formula:

[0035] F = f 1 / cos α

[0036] In the above formula, F Tension for target, f 1 represents the minimum tension. α The included angle is the target angle.

[0037] When using only the maximum tension force, after measuring the maximum tension force, the target tension force is determined according to the following formula:

[0038] F = f 2·sinα

[0039] In the above formula, f 2 represents the maximum tension.

[0040] When using both minimum and maximum tension forces, after measuring the minimum and maximum tension forces, the target tension force is determined according to the following formula:

[0041] F =( f 1 / cos α + f 2·sin α ) / 2

[0042] Based on the above measurement methods, this application also provides a metal braided wire tension testing device, comprising:

[0043] The region construction module is used to construct the tension region of the braided wires in the metal braided wire, and to determine the guide position, inflection point position and the exit braid position in the tension region.

[0044] The data acquisition module is used to determine the reference tension of the braided yarn in the tensioning area, and to obtain the target angle between the reference direction and the target direction in the braiding mechanism, with the line connecting the guide position and the inflection point position as the reference direction and the line connecting the inflection point position and the exit braiding position as the target direction.

[0045] The tension calculation module is used to determine the target tension based on the target angle and the reference tension.

[0046] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0047] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A method for testing the tension of a metal braided wire, characterized in that, include: Construct a tension zone for the braided strands in the metal braided wire, and determine the lead-in position, inflection point position, and lead-out braiding position within the tension zone; Determine the reference tension of the braided yarn in the tensioned region; Using the line direction connecting the guide position and the inflection point position as the reference direction, and the line direction connecting the inflection point position and the exit weaving position as the target direction, the target angle between the reference direction and the target direction in the weaving mechanism is obtained. The target tension force is determined based on the target included angle and the reference tension force. The reference tension includes minimum tension and / or maximum tension. The minimum tension refers to the tension force borne by the braided yarn in the tensioning area when the target direction is parallel to the reference direction. The method for determining the minimum tension is as follows: the braided yarn is passed sequentially through the guide position A and the inflection point B in a manner parallel to the reference direction, and the braided yarn remains parallel to the reference direction outside the inflection point B. The current tension of the braided yarn is measured using a force measuring device to obtain the minimum tension force that the current shuttle can provide to the braided yarn. The maximum tension force refers to the tension force borne by the braided yarn in the tensioning area when the target direction is perpendicular to the reference direction. The method for determining the maximum tension force is as follows: the braided yarn is passed sequentially through the guide position A and the inflection point B in a manner parallel to the reference direction, and the direction of the braided yarn is changed outside the inflection point B so that the braided yarn is in a state perpendicular to the reference direction. The current tension force of the braided yarn is measured using a force measuring device to obtain the maximum tension force that the current shuttle frame can provide to the braided yarn.

2. The method for testing the tension of a metal braided wire according to claim 1, characterized in that, The reference tension force was measured using a tension meter.

3. The method for testing the tension of a metal braided wire according to claim 1, characterized in that, After measuring the minimum tension force, the target tension force is determined according to the following formula: F = f 1 / cos α In the above formula, F For the target tension force, f 1 represents the minimum tension force. α The included angle of the target is denoted as .

4. The method for testing the tension of a metal braided wire according to claim 1, characterized in that, After measuring the maximum tension force, the target tension force is determined according to the following formula: F = f 2·sin α In the above formula, F For the target tension force, f 2 represents the maximum tension force. α The included angle of the target is denoted as .

5. The method for testing the tension of a metal braided wire according to claim 1, characterized in that, After measuring the minimum and maximum tension forces, the target tension force is determined according to the following formula: F =( f 1 / cos α + f 2·sin α ) / 2 In the above formula, F For the target tension force, f 1 represents the minimum tension force. f 2 represents the maximum tension force. α The included angle of the target is denoted as .

6. A device for testing the tension of a metal braided wire, characterized in that, include: The region construction module is used to construct the tension region of the braided filaments in the metal braided wire, and to determine the guide position, inflection point position and exit braid position in the tension region; The data acquisition module is used to determine the reference tension force of the braided yarn in the tensioning area, and to obtain the target angle between the reference direction and the target direction in the braiding mechanism, with the line connecting the guide position and the inflection point position as the reference direction and the line connecting the inflection point position and the exit braiding position as the target direction. The tension calculation module is used to determine the target tension force based on the target included angle and the reference tension force. The reference tension includes minimum tension and / or maximum tension. The minimum tension refers to the tension force borne by the braided yarn in the tensioning area when the target direction is parallel to the reference direction. The method for determining the minimum tension is as follows: the braided yarn is passed sequentially through the guide position A and the inflection point B in a manner parallel to the reference direction, and the braided yarn remains parallel to the reference direction outside the inflection point B. The current tension of the braided yarn is measured using a force measuring device to obtain the minimum tension force that the current shuttle can provide to the braided yarn. The maximum tension force refers to the tension force borne by the braided yarn in the tensioning area when the target direction is perpendicular to the reference direction. The method for determining the maximum tension force is as follows: the braided yarn is passed sequentially through the guide position A and the inflection point B in a manner parallel to the reference direction, and the direction of the braided yarn is changed outside the inflection point B so that the braided yarn is in a state perpendicular to the reference direction. The current tension force of the braided yarn is measured using a force measuring device to obtain the maximum tension force that the current shuttle frame can provide to the braided yarn.

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