WO2021042408A1

WO2021042408A1 - Bending-resistant wire and processing method therefor

Info

Publication number: WO2021042408A1
Application number: PCT/CN2019/105410
Authority: WO
Inventors: 张海斌; 金涛; 刘灿
Original assignee: 深圳市金泰科环保线缆有限公司
Priority date: 2019-09-03
Filing date: 2019-09-11
Publication date: 2021-03-11
Also published as: CN110459346A; DE112019005457T5; JP2022509331A; JP7130288B2

Abstract

A bending-resistant wire and a processing method therefor. The bending-resistant wire comprises a core material (101) and a plurality of conducting wires wound on the surface of the core material (101); the plurality of conducting wires wound on the surface of the core material (101) form a plurality of repeated and continuous minimum winding units (102); the conducting wires in each of the minimum winding units (102) are wound side by side according to a same angle; and the distance between adjacent minimum winding units (102) is 2-4 times the width of a single minimum winding unit (102), so that an enough bending space is reserved between the adjacent minimum winding units (102); the actual width of the minimum winding unit (102) is increased on the basis of the bending space when the bending-resistant wire is bent; thus, the bending-resistant wire has high bending resistance.

Description

Anti-bending wire rod and processing method thereof

This application claims the priority of a Chinese patent application filed with the Chinese Patent Office on September 3, 2019, the application number is 201910829209.1, and the application name is "a bending-resistant wire and its processing method", the entire content of which is incorporated by reference In this application.

Technical field

This application relates to the field of wire rods, and in particular to a bending-resistant wire rod and a processing method thereof.

Background technique

The connecting wires in the fields of science and technology machinery and electronic products in the prior art all have certain requirements in terms of bending resistance, that is, they generally need to remain connected after being bent many times. However, the biggest problem with these connecting wires in the prior art is still that they are easily broken after being used many times.

In order to solve the above-mentioned problems, the Chinese patent application number 201220609213.0 provides a new type of super-strong bending and tensile-resistant conductive wire, which specifically winds the copper wire on the outside of the anti-broken wire conductor. The method is a threaded rotary winding method. Through the above structure, the bending resistance of the conductive wire can be improved, and the repeated folding and bending can be achieved more than a million times. Although the above-mentioned prior art has achieved the effect of improving the bending resistance performance to a certain extent, in actual products, the use environment is complex and changeable, and the bending methods and times are very different, resulting in the actual product performance in the real environment. There is a big gap between the bending resistance and the bending resistance under the test environment.

Therefore, how to continue to improve the bending resistance to realize the continuous threading of the wire under the complex and changeable use environment and conditions is a technical problem that needs to be solved by those skilled in the art.

Application content

The purpose of this application is to provide a bending resistant wire material and a processing method thereof, which can improve the bending resistance performance, so as to realize the continuous wire of the wire material under complex and changeable use environments and conditions.

In the first aspect, the embodiments of the present application provide a bending resistant wire material, including a core material and multiple strands of wires wound on the surface of the core material, and the multiple strands of wires wound on the surface of the core material form multiple repeats. And a continuous minimum winding unit, each bundle of wires in the minimum winding unit is wound side by side at the same angle, and the distance between adjacent minimum winding units is 2 to 4 times the width of a single minimum winding unit.

In the second aspect, an embodiment of the present application provides a method for processing the bending-resistant wire material of the first aspect, which includes the steps:

Control the continuous movement of the core material;

Pull out the multiple bundles of wires that have been wound, and wind the multiple bundles of wires side by side on the surface of the continuously moving core material;

By controlling the moving speed of the core material and/or the wire winding speed, the multiple wires wound on the surface of the core material form multiple repeated and continuous minimum winding units; wherein, each bundle of wires in the minimum winding unit is at the same angle Winding side by side, and the distance between adjacent minimum winding units is 2 to 4 times the width of a single minimum winding unit;

Rewind the wound anti-bending wire.

Further, before the continuous movement of the control core material includes:

Pre-wind multiple strands of wires on the reel;

The controlling the continuous movement of the core material includes:

The control core material passes through the reel and moves in a predetermined direction.

Description of the drawings

In order to explain the technical solutions of the embodiments of the present application more clearly, the following will briefly introduce the drawings used in the description of the embodiments. Obviously, the drawings in the following description are some embodiments of the present application. Ordinary technicians can obtain other drawings based on these drawings without creative work.

FIG. 1 is a schematic structural diagram of a bending resistant wire provided by an embodiment of the application;

FIG. 2 is a schematic flowchart of a method for processing a bending resistant wire provided by an embodiment of the application.

detailed description

The technical solutions in the embodiments of the present application will be described clearly and completely in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of them. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of this application.

It should be understood that when used in this specification and appended claims, the terms "including" and "including" indicate the existence of the described features, wholes, steps, operations, elements and/or components, but do not exclude one or The existence or addition of multiple other features, wholes, steps, operations, elements, components, and/or collections thereof.

It should also be understood that the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit the application. As used in the specification of this application and the appended claims, unless the context clearly indicates other circumstances, the singular forms "a", "an" and "the" are intended to include plural forms.

It should be further understood that the term "and/or" used in the specification and appended claims of this application refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations .

Please refer to Figure 1. Figure 1 is a schematic structural diagram of a bending resistant wire provided by an embodiment of the application. As shown in the figure, the bending resistant wire includes a core material 101 and a core material 101 wound on the surface of the core material 101. Bundle of wires (specifically including wire a, wire b, wire c, and wire d in Figure 1), the multiple strands of wires wound on the surface of the core material 101 form multiple repeated and continuous minimum winding units 102 (Figure 1 The dashed frame part), each bundle of wires in the minimum winding unit 102 is wound side by side at the same angle, and the distance between adjacent minimum winding units 102 (represented by f in FIG. 1) is a single minimum winding unit 102 2 to 4 times the width (represented by e in Figure 1).

In the embodiment of the present application, the minimum winding unit 102 refers to a repeatable minimum unit wound on the surface of the core material 101. In the minimum winding unit 102, each bundle of wires is wound side by side and all wound at the same angle. Thereby forming a regular winding body.

Compared with the prior art, the core improvement of the present application is that the distance between adjacent minimum winding units 102 is 2 to 4 times the width of a single minimum winding unit 102. In this way, there will be sufficient bending space between the adjacent minimum winding units 102. When the bending resistant wire is bent, due to the large bending space between the adjacent minimum winding units 102, it will eventually be The actual width of the minimum winding unit 102 will be increased based on the bending space. In other words, when the bending operation is performed on the bending resistant wire, the bending resistant wire will have sufficient bending margin to offset the increase in the width of the minimum winding unit 102 required by the bending operation.

Since the minimum winding unit 102 in the bending resistant wire material is repeated and continuous, and the distance between adjacent minimum winding units 102 is 2 to 4 times the width of a single minimum winding unit 102, the entire bending resistance The folded wire material has flexural resistance as a whole. Generally speaking, since the smallest winding unit 102 is formed by winding bundles of wires side by side, and the actual size of each bundle of wires is small, the actual size of the smallest winding unit 102 is also very small. The distance between the two is 2 to 4 times the width of the single smallest winding unit 102, but the distance between adjacent smallest winding units 102 is also very small, and the bending-resistant wire is very much compared to the smallest winding unit 102 as a whole. Long, so the final bending resistance wire material actually has the above bending space everywhere, which is of great significance to the bending resistance wire material, which means that on the whole, the bending resistance wire material In fact, it has anti-bending performance everywhere, no matter which part of the anti-bending wire is bent, there will be a corresponding bending space to cushion the requirement of increasing the width of the minimum winding unit 102.

Specifically, the distance between adjacent minimum winding units 102 should not be too small or too large. If the distance between adjacent minimum winding units 102 is too small, the bending space provided by the minimum winding units 102 is too small, and the bending resistance requirements may not be met. If the distance between adjacent minimum winding units 102 is too large, then the wires connected between adjacent minimum winding units 102 will be arranged in the transverse direction and the distance of the wires arranged in the transverse direction is too long, and the bending will be performed. During the folding operation, the wires connected between the adjacent minimum winding units 102 will have a greater risk of wire breakage. If this part of the wire is broken, the bending-resistant wire as a whole will not be able to transmit signals and lose the signal transmission function. This application has been proved through countless experiments by the applicant that when the distance between adjacent smallest winding units 102 is 2 to 4 times the width of the smallest winding unit 102, it can ensure that a larger bending space is provided and the bending resistance is achieved. Performance requirements. At the same time, for the wires between adjacent minimum winding units 102, they should not be inclined too much in the lateral direction, and the length should not be too long, which can prevent this part of the wires from breaking when they are repeatedly bent. problem.

In a specific application scenario, the distance between adjacent minimum winding units 102 is 3 times the width of the minimum winding unit 102. In this case, the overall bending resistance of the wire is the best, which can ensure sufficient bending At the same time, the wires between adjacent minimum winding units 102 are not prone to the risk of disconnection.

With the anti-bending wire provided by the embodiments of the present application, a reasonable distance is set between adjacent minimum winding units 102, so that the anti-bending wire has anti-bending performance everywhere, even if the anti-bending wire is When a certain position is bent multiple times, the wire breakage will not occur, thereby improving the overall bending resistance performance of the bending resistant wire. The bending resistant wire provided by the embodiment of the present application is particularly suitable for some frequently required bending Operate products, such as headset cables, robot cables, data cables, etc.

Further, the winding angle of the minimum winding unit 102 is an included angle of 30-60 degrees with the core material 101. Since the minimum winding unit 102 is formed by winding a plurality of wires on the core material 101 side by side, the winding angle of the minimum winding unit 102 can also guide the winding angle of the wire. The winding angle of the minimum winding unit 102 refers to the angle formed with the core material 101. Assuming that the core material 101 is placed horizontally, when each wire in the minimum winding unit 102 is wound around the core material 101, the angle (acute angle) between each wire and the horizontal line is the angle between the wire and the core material 101. In this application, the winding angle of the minimum winding unit 102 should not be too large or too small. If the winding angle of the smallest winding unit 102 is too large, it will cause the wires between adjacent smallest winding units 102 to approach the core 101, causing the wires connecting adjacent smallest winding units 102 to tilt in the horizontal direction, which will affect the length of the wire. Bending resistance. If the winding angle of the minimum winding unit 102 is too small, the wire of the minimum winding unit 102 will tilt to the horizontal direction, which affects the bending resistance of the minimum winding unit 102 itself. Therefore, when setting the winding angle, The bending resistance of the wires of the smallest winding unit 102 should be paid attention to, and the bending resistance of the wires between the smallest winding units 102 should be paid attention to. In the embodiment of the present application, the applicant’s numerous experiments have proved that the winding angle is set to The included angle of 30-60 degrees with the core material 101 can ensure that the bending-resistant wire material maintains a good bending resistance performance as a whole without causing a certain part of the bending resistance performance to be reduced.

Further, in the above-mentioned embodiment, the distance between adjacent minimum winding units 102 is limited, so that the wire can have bending resistance at these places. However, when the wire is bent, the specific bending position is uncertain. If the pitch between adjacent bundles of wires is small, the minimum winding unit 102 will first start to loosen the wire from the two ends of the wire (due to the adjacent minimum winding There is a bending space between the units 102), and because the pitch of the wires in the middle of the smallest winding unit 102 is too small, the wires in the middle cannot be loosened in time, and are still in the original structure. The force caused by bending cannot be buffered, which may cause The wire in the middle is broken, so the embodiment of the present application needs to optimize the structure of the minimum winding unit 102. In other words, when the wire is bent, each bundle of wires in the minimum winding unit 102 also has a requirement to increase the width, so that the minimum winding unit 102 itself has a certain degree of bending resistance. In order to achieve this effect, the present application The embodiment defines the pitch between adjacent bundles of wires. Specifically, in the minimum winding unit 102, the pitch between adjacent bundles of wires is 0.1 to 2 times the diameter of a single bundle of wires, so that for the smallest winding unit 102 itself has bending space. That is, when the wire is bent, the minimum winding unit 102 has a certain gap between adjacent bundles of wires, thereby providing bending space for these wires, so that the minimum winding unit 102 itself has a certain degree of bending resistance. performance.

On the one hand, based on the above description, the pitch between the adjacent strands of wires should not be too small, otherwise it will not be able to buffer in time and effectively, and the risk of breakage of the intermediate wires of the smallest winding unit 102 will increase; The pitch between them should not be too large, otherwise the winding angle of each bundle of wires is too small, causing the wires to tilt toward the core 101, which will also increase the risk of breakage. In the embodiments of this application, after countless experiments by the applicant, it was creatively discovered that setting the pitch between adjacent bundles of wires to 0.1 to 2 times the diameter of a single bundle of wires can make the smallest winding unit 102 have better bending resistance. Fold performance. However, in a specific application scenario, the pitch between the adjacent bundles of wires is set to be 1 time of the diameter of a single bundle of wires, and the bending resistance performance is the best.

In the embodiment of the present application, in the minimum winding unit 102, the diameters of the bundles of wires are the same or not much different. The aforementioned single bundle of wires refers to the diameter of any bundle of wires, or can refer to all bundles of wires. The average value of the diameter.

Obviously, the cross section of the wire is usually circular, so the above-mentioned size of the pitch is also used as a reference to the diameter, but it is easy for those skilled in the art to think that the cross section of the wire can also adopt other deformed structures, such as Polygonal structure, or set to other structures according to actual application scenarios. When these deformed structures are used in the cross section of the wire, the pitch between the adjacent bundles of wires can obviously be set to 0.1 to 2 times the width of a single bundle of wires.

Further, the wire is an enameled wire or a bare wire. Similarly, based on different application scenarios, the wire may adopt an enameled wire structure or a bare wire structure. The enameled wire is composed of a conductor and an insulating layer, and is specifically formed by annealing and softening a bare wire, then painting and baking for many times. The bare wire refers to a product with only a conductor without an insulating layer, and specifically may be a round single wire of various metals such as copper and aluminum or a composite metal. In the embodiments of the present application, in principle, each bundle of wires adopts wires of the same structure, for example, all adopt the structure of enameled wires, or all adopt the structure of bare wires. And if the structure of bare wires is adopted, the multiple wires will be connected to each other and transmit the same signal together. If the structure of enameled wire is adopted, the multiple wires will not interfere with each other and each transmit different signals. Of course, in some special cases, each bundle of wires can also adopt a mixed structure of wires, that is, in multiple bundles of wires, a certain bundle or bundles of wires are of enameled wire structure, and certain bundles or bundles of wires are of bare wire structure. .

Further, the multiple bundles of wires are wound with multiple layers, and an insulating layer is arranged between the multiple bundles of wires in adjacent layers.

Specifically, when the multiple bundles of wires are wound, only one layer or multiple layers can be wound. Different winding methods have different benefits. For example, when only one layer is wound, it can ensure that the wire rod as a whole maintains strong bending resistance. Bending performance, but the number of signal paths that can be transmitted will be limited; if multiple layers are wound, multiple signals can be transmitted at the same time, but it will inevitably reduce the overall bending resistance of the wire, and the more layers are wound , The bending resistance performance decreases more. Therefore, in the embodiments of the present application, it is not recommended to wind multiple layers of wires. Generally, it is wound up to 3 layers, preferably 2 layers to ensure sufficient bending resistance. When winding multi-layer wires, an insulating layer can be provided between the multiple wires of adjacent layers, so that the multiple wires between different layers will not interfere with each other. Specifically, after winding a layer of multiple strands of wires, an insulating layer, such as insulating glue, can be wrapped on the surface of the multiple strands of wires. Then continue to wind multiple strands of wires on the insulating layer. As for the winding method of the second layer, the winding method is the same as that of the first layer, but the final winding structure can be exactly the same or slightly different according to needs, such as winding The angle can be different, the distance between adjacent minimum winding units 102 can be different from the multiple of the width of a single minimum winding unit 102, and the winding intercept can be different. In addition, the type of wire wound can also be different. However, regardless of the winding structure, the winding method is the same, that is, "a plurality of repeated and continuous minimum winding units 102 are formed, and the bundles of wires in the minimum winding unit 102 are wound side by side at the same angle and adjacent to each other. The spacing between the smallest winding units 102 is 2 to 4 times the width of the single smallest winding unit 102".

Further, the wires are provided with 4 bundles. These 4 bundles of wires are preferably bare wires, such as wire a, wire b, wire c, and wire d in FIG. 1, and these 4 bundles of bare wires will transmit signals together. Obviously, in different application scenarios, the number of wires can be adjusted according to actual needs. For example, 2 bundles, 3 bundles, 4 bundles, 5 bundles, 6 bundles, etc. can be set specifically, but no matter how many bundles of wires are used, it The arrangement and winding methods are the same, so that the wire has sufficient bending resistance as a whole. Furthermore, the wires can be set as one bundle, and there is only one bundle of wires in a minimum winding unit 102, and the distance between adjacent minimum winding units 102 is actually the pitch between adjacent bundles of wires. In this case , The final wire rod still has good bending resistance.

Further, the core material 101 is a conductive core material or a non-conductive core material. Based on different application scenarios, the core material 101 may be a conductive core material or a non-conductive core material.

In addition, the core material 101 may also be a core material with tensile properties, so that when the bending-resistant wire material is stretched, since there is a larger bending space between adjacent minimum winding units 102, the The bending space actually becomes the stretching space, and the core material 101 located in the middle part also has stretching properties, so the actual width of the minimum winding unit 102 will eventually be increased based on the stretching space.

It should be noted that Figure 1 is only a schematic structural diagram drawn for the convenience of description. In the actual product, the diameter of each wire is very small, so in the actual product, the width of the smallest winding unit 102 and the width of the adjacent smallest winding unit 102 The distances between the two are very small, so the wires between adjacent minimum winding units 102 will not be too inclined toward the core material 101, and they can still be kept at a better winding angle.

The embodiment of the present application also provides a method for processing the anti-bending wire rod, as shown in FIG. 2, which includes the steps:

S201. Control the continuous movement of the core material;

In a specific application scenario, first control the core material to be in a state of continuous movement, so that the wire can be continuously wound on the surface of the core material during the movement of the core material. Specifically, the core material should move in the same direction to facilitate continuous processing.

Preferably, before the S201, it further includes:

Multiple bundles of wires are wound on the reel in advance.

That is, when processing, multiple bundles of wires are prepared first, and multiple bundles of wires are pre-wound on the reel to facilitate processing.

Correspondingly, the controlling the continuous movement of the core material includes:

The reel for winding multiple bundles of wires has a hollow structure, and the core material can pass through the core and move in a predetermined direction, that is, move in the same direction.

S202. Pull out the multiple bundles of wires that have been wound, and wind the multiple bundles of wires side by side on the continuously moving core material;

Specifically, the multiple bundles of wires that have been wound can be drawn out from one end of the reel, specifically toward the end of the core material moving direction, and then the multiple strands of wires are continuously drawn along a predetermined angle, and the controller is wound around the continuously moving core. In order to achieve the purpose of continuous processing of anti-bending wire.

S203. By controlling the moving speed of the core material and/or the winding speed, the multiple strands of wires wound on the surface of the core material form multiple repeated and continuous minimum winding units; each bundle of wires in the minimum winding unit is in accordance with the same Winding side by side at an angle, and the distance between adjacent minimum winding units is 2 to 4 times the width of a single minimum winding unit;

In order to make the distance between adjacent minimum winding units 2 to 4 times the width of the single minimum winding unit, it can be realized based on two control methods, one is to control the core material moving speed, for example, control to increase the core material moving speed Because the winding speed is constant, the spacing between the minimum winding units will increase, and the core material moving speed will be controlled to decrease. Because the winding speed is constant, the spacing between the minimum winding units will be reduced. One is to control the winding speed, such as reducing the winding speed. Since the core material moving speed is unchanged, the distance between the smallest winding units will be reduced, and the winding speed will be controlled to increase. The spacing between the smallest winding units increases.

The above is based on a single control method to realize the control of the distance between adjacent minimum winding units. The embodiment of the present application can also use two control methods to control the above distance at the same time, and the final effect is also The distance between adjacent minimum winding units is 2 to 4 times the width of the single minimum winding unit.

S204. Winding the wound anti-bending wire.

After a number of wires are wound on the surface of the core material, a winding device can be installed at one end of the core material moving direction to wind up the bending resistant wire material after winding, so as to continuously process the bending resistant wire material.

The various embodiments in the specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the description of the method part. It should be pointed out that for those of ordinary skill in the art, without departing from the principles of this application, several improvements and modifications can be made to this application, and these improvements and modifications also fall within the protection scope of the claims of this application.

It should also be noted that in this specification, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply these entities or operations. There is any such actual relationship or sequence between operations. Moreover, the terms "include", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes those that are not explicitly listed Other elements of, or also include elements inherent to this process, method, article or equipment. Under the condition of no more restrictions, the element defined by the sentence "including a..." does not exclude the existence of other same elements in the process, method, article, or equipment that includes the element.

Summary of the invention

technical problem

The solution to the problem

The beneficial effects of the invention

Claims

A bending resistant wire material, comprising a core material and a plurality of wires wound on the surface of the core material, the plurality of wires wound on the surface of the core material form a plurality of repeated and continuous minimum winding units, the minimum The bundles of wires in the winding unit are wound side by side at the same angle, and the distance between adjacent minimum winding units is 2 to 4 times the width of a single minimum winding unit.
The anti-bending wire according to claim 1, wherein the winding angle of the minimum winding unit is an included angle of 30-60 degrees with the core material.
The anti-bending wire according to claim 1, wherein, in the minimum winding unit, the pitch between adjacent bundles of wires is 0.1 to 2 times the diameter of a single bundle of wires.
The anti-bending wire according to claim 1, wherein the core material is a conductive core material or a non-conductive core material.
The anti-bending wire according to claim 1, wherein the wire is an enameled wire or a bare wire.
The anti-bending wire according to claim 1, wherein the multiple bundles of wires are wound with multiple layers, and an insulating layer is provided between the wires of adjacent layers.
The anti-bending wire according to claim 6, wherein the multiple strands of wires are wound in 2 or 3 layers.
The anti-bending wire according to claim 6, wherein the insulating layer is an insulating glue.
A method for processing a bending resistant wire material, the bending resistant wire material comprises a core material and multiple bundles of wires wound on the surface of the core material, and the multiple bundles of wires wound on the surface of the core material form a plurality of Repeated and continuous minimum winding unit, each bundle of wires in the minimum winding unit is wound side by side at the same angle, and the distance between adjacent minimum winding units is 2 to 4 times the width of a single minimum winding unit, so The method includes the steps:

Control the continuous movement of the core material;

Pull out the multiple bundles of wires that have been wound, and wind the multiple bundles of wires side by side on the surface of the continuously moving core material;

By controlling the moving speed of the core material and/or the wire winding speed, the multiple wires wound on the surface of the core material form multiple repeated and continuous minimum winding units; wherein, each bundle of wires in the minimum winding unit is at the same angle Winding side by side, and the distance between adjacent minimum winding units is 2 to 4 times the width of a single minimum winding unit; winding the wound anti-bending wire material.
The method according to claim 9, wherein before said controlling the continuous movement of the core material comprises:

Pre-wind multiple strands of wires on the reel;

The controlling the continuous movement of the core material includes:

The control core material passes through the reel and moves in a predetermined direction.
9. The method according to claim 9, wherein the winding angle of the minimum winding unit is 30-60 degrees with the core material.
The method according to claim 9, wherein, in the minimum winding unit, the pitch between adjacent bundles of wires is 0.1 to 2 times the diameter of a single bundle of wires.
The method according to claim 9, wherein the core material is a conductive core material or a non-conductive core material.
The method according to claim 9, wherein the wire is an enameled wire or a bare wire.
The method according to claim 9, wherein the multiple bundles of wires are wound with multiple layers, and an insulating layer is provided between the wires of adjacent layers.
The method according to claim 15, wherein the multiple strands of wires are wound in 2 or 3 layers.
The method according to claim 15, wherein the insulating layer is an insulating glue.