阅读说明：本技术 一种编织可拉伸导线及其制备方法 (Woven stretchable lead and preparation method thereof ) 是由 苏业旺 李居曜 于 2021-09-16 设计创作，主要内容包括：本发明属于导电线的设计技术领域,针对现有技术中存在的可拉伸导电线的缺点问题,本发明公开一种编织可拉伸导线的制备方法,(1)首先将一根或多根乳胶丝芯线进行预拉伸,拉伸至其弹性极限；(2)然后将导电线和织物纤维相互交织地编织在预拉伸的乳胶丝上,编织结束后释放预应变来实现整体结构的可拉伸性。该可拉伸导线具有较大拉伸性,可拉伸100％甚至更高；易实现批量生产；无需封装即可实现可水洗性；易于与衣物集成,对智能服装的“落地”生产具有重要推动作用；同时由于采用三种材料混合编织的方法,使得可拉伸导线的整体结构稳定不容易发生破坏；可拉伸导线电阻率低,整体结构的电阻不随结构的变形发生变化,能够实现信号和能量的稳定传输。(The invention belongs to the technical field of design of a conductive wire, and aims at the defect problem of a stretchable conductive wire in the prior art, the invention discloses a preparation method of a woven stretchable conductive wire, which comprises the following steps of (1) firstly pre-stretching one or more latex silk core wires to the elastic limit; (2) then the conductive wires and the textile fibers are interwoven on the pre-stretched latex filaments, and the pre-strain is released after the weaving is finished to realize the stretchability of the whole structure. The stretchable wire has greater stretchability, and can be stretched by 100% or even more; the mass production is easy to realize; the washability can be realized without packaging; the intelligent clothing is easy to integrate with clothing, and has an important promoting effect on the 'floor' production of intelligent clothing; meanwhile, the method of weaving the three materials in a mixed mode is adopted, so that the whole structure of the stretchable wire is stable and is not easy to damage; the stretchable wire has low resistivity, the resistance of the whole structure is not changed along with the deformation of the structure, and the stable transmission of signals and energy can be realized.)

1. The woven stretchable lead is characterized in that a latex yarn core wire, fabric fibers and a conductive wire are sequentially arranged from inside to outside, and the fabric fibers and the conductive wire are wrapped on the outer side wall of the latex yarn core wire through weaving.

2. The woven stretchable wire of claim 1, wherein the fabric fiber further comprises uniformly distributed embedded layers embedded on the inner surface of the conductive wire, the embedded layers are arranged in a ring-shaped structure and coated on the outer side wall of the latex yarn core wire; the fabric fiber also comprises uniformly distributed convex parts protruding out of the outer surface of the conductive wire.

3. The woven stretchable wire of claim 2, wherein the protrusion comprises a first edge and a second edge with an arcuate edge disposed therebetween, the arcuate edge being angled between 30 ° and 90 °.

4. The woven stretchable wire according to claim 1, wherein the conductive wire is selected from any one of copper wire, copper-plated stainless steel wire or copper-plated aluminum alloy wire; the fabric fiber is made of any one of spandex yarn, polyester yarn, polypropylene yarn or nylon yarn; the conductive wire is set as a conductive metal wire, and a layer of polyvinyl chloride insulating material is attached to the outer layer of the conductive wire.

5. A preparation method of a knitted stretchable lead is characterized in that a conductive wire, fabric fibers and a latex yarn core wire are adopted as raw materials, and the three raw materials are knitted into the stretchable lead through mixed knitting.

6. The method for preparing a knitted stretchable lead according to claim 5, comprising the following steps:

(1) firstly, combining a plurality of latex yarn core wires into a strand of latex yarn core wire, and pre-stretching a strand of latex yarn core wire to the elastic limit of the strand of latex yarn core wire;

(2) then a plurality of conductive wires and fabric fibers are interwoven and woven on the pre-stretched latex silk core wire, and the pre-strain is released after the weaving is finished to realize the stretchability of the whole structure.

7. The method as claimed in claim 6, wherein the number of the conductive wires occupied in the step (2) is determined according to the requirement of the number of the channels of the actual stretchable conductive wire, and the step is performed by combining a plurality of mutually insulated conductive wires into one wire occupying one spindle or by dividing a plurality of mutually insulated conductive wires into two equal parts respectively occupying two spindles.

8. The method as claimed in claim 6 or 7, wherein the plurality of conductive wires are combined into a single conductive wire or a plurality of conductive wires arranged in parallel, and the single conductive wire or the plurality of conductive wires arranged in parallel are spirally arranged at equal intervals along the same spiral direction by weaving, wherein the number of the single conductive wires is more than or equal to 1.

9. The method as claimed in claim 6 or 7, wherein the plurality of conductive wires are equally divided into two strands, and the two strands are arranged in a spiral crossing manner by weaving along opposite spiral directions, wherein the number of the single strands is not less than 1.

10. The method for preparing a braided stretchable wire according to claim 6, wherein in the step (2), the density of the conductive wires and the fabric fibers wound on the latex yarn core wire is adjusted by adjusting the rotation speed of the spindle where the conductive wires are located, so as to control the stretchability of the whole braided stretchable wire, and the more dense the braiding, the less stretchability of the whole structure.

Technical Field

The invention belongs to the technical field of design of conductive wires, and particularly relates to a woven stretchable wire and a preparation method thereof.

Background

Electrically conductive wires have important applications in electrical circuits, primarily for the transmission of electrical signals and the transfer of energy. While the traditional conductive wire generally has no stretchability, with the continuous development of flexible electronic technology, research and preparation of stretchable conductive wires are essential. The "bridge" in the "island bridge" structure, which is common in flexible electronics, is a wire with stretchability. The bridge structure evolves continuously from a straight bridge, a curved bridge and a fractal structure to a non-buckling structure, and the integral stretchability of the structure is also improved continuously. However, the stretchable interconnection wire is limited to the connection of a short distance (<1cm) inside the flexible electronic component, and is generally prepared by micro-processing technologies such as photoetching, corrosion, transfer printing, laser cutting and the like; the method is not suitable for connection of long distance (>1cm) between flexible electronic components, and meanwhile, micro-processing technologies such as photoetching are not suitable for preparing external interconnection leads with large sizes. The research and preparation of the external stretchable interconnection wire have important significance for the practicability of landing of the flexible electronic equipment. Such as smart apparel, must be connected between the flexible electronic components using such externally stretchable interconnect wires.

Disclosure of Invention

Aiming at the defect problems of stretchable conducting wires in the prior art, the invention aims to disclose a woven stretchable conducting wire and a preparation method thereof, and designs a stretchable interconnecting conducting wire which has higher stretchability and can be produced in batch for signal and energy transmission between flexible electronic components.

The technical scheme adopted by the invention is as follows:

a knitted stretchable lead is sequentially provided with an emulsion silk core wire, a fabric fiber and a conductive wire from inside to outside, wherein the fabric fiber and the conductive wire are wrapped on the outer side wall of the emulsion silk core wire through knitting.

Furthermore, the fabric fiber also comprises embedded layers which are uniformly distributed and embedded into the inner surface of the conductive wire, wherein the embedded layers are arranged into an annular structure and are coated on the outer side wall of the latex yarn core wire; the fabric fiber also comprises uniformly distributed convex parts protruding out of the outer surface of the conductive wire.

Still further, the protruding portion includes first edge and second edge, is provided with the arc edge between first edge and the second edge, and more specifically, first edge and second edge are outwards the relative extension of arc along the lateral wall of electrically conductive line, and the transition of the two sets up to the arc edge, and the angle of this arc edge sets up 30 to 90.

Further, the electric conductor is any one of a copper wire, a copper-plated stainless steel wire or a copper-plated aluminum alloy wire; the fabric fiber is made of any one of spandex yarn, polyester yarn, polypropylene yarn or nylon yarn.

Furthermore, the conducting wire is set to be a conducting metal wire, and a layer of polyvinyl chloride insulating material is attached to the outer layer of the conducting wire. The woven stretchable wire thus prepared can be water-washable without being packaged.

A method for preparing a knitted stretchable lead wire adopts a conductive wire, fabric fibers and a latex yarn core wire as raw materials, and the three raw materials are knitted into the stretchable lead wire through mixed knitting.

A preparation method of a woven stretchable wire specifically comprises the following steps:

(1) firstly, combining a plurality of latex yarn core wires into a strand of latex yarn core wire, and pre-stretching a strand of latex yarn core wire to the elastic limit (about 150%);

(2) then a plurality of conductive wires and fabric fibers are interwoven and woven on the pre-stretched latex silk core wire, and the pre-strain is released after the weaving is finished to realize the stretchability of the whole structure.

The step (1) is stretched to about 150% of its elastic limit in order to make the knitted structure stretchable.

Furthermore, the number of the ingots occupied by the conductive wires is determined according to the requirement of the number of the channels of the actual stretchable conductive wires in the step (2), and the conductive wires are combined into one strand to occupy one spindle or divided into two strands equally by a plurality of conductive wires which are insulated with each other and respectively occupy two spindles.

Furthermore, the plurality of conductive wires are combined into a single-stranded conductive wire or a plurality of conductive wires which are arranged in parallel, the single-stranded conductive wire or the plurality of conductive wires which are arranged in parallel are spirally arranged at equal intervals along the same spiral direction by weaving, wherein the number of the single-stranded conductive wires is more than or equal to 1 conductive wire.

Furthermore, the plurality of conductive wires are equally divided into two conductive wires which are respectively arranged in a spiral crossed manner by weaving along opposite spiral directions, wherein the number of the single conductive wires is more than or equal to 1 conductive wire.

Furthermore, in the step (2), the rotating speed of the spindle where the conductive wire is located is adjusted to adjust the density of the conductive wire and the fabric fiber wound on the latex yarn core wire, so that the stretchability of the whole knitted stretchable wire is controlled, the rotation speed is adjusted to avoid that the knitted fiber is too dense, so that the whole structure has no stretchability, and the denser the knitted structure is, the lower the stretchability of the whole structure is.

The invention has the beneficial effects that:

the invention provides a stretchable braided wire, which is designed by utilizing the traditional copper wire and stainless steel copper-plated wire materials and combining the traditional braiding process and a novel structure.

Compared with other stretchable wires, the knitted stretchable wire disclosed by the invention is easy to realize batch production by adopting a mature knitting process; the stretchability is good, and can be stretched by 100% or even higher; the washability can be realized without packaging; the intelligent clothing is easy to integrate with clothing, and has an important promoting effect on the 'floor' production of intelligent clothing; meanwhile, by adopting a method of weaving three materials in a mixed manner, the fabric fiber and the conductive wire are alternately woven on the latex silk core wire, so that the whole structure of the stretchable lead is stable and is not easy to damage; the stretchable wire has low resistivity, the resistance of the whole structure is not changed along with the deformation of the structure, and the stable transmission of signals and energy can be realized.

Drawings

FIG. 1 is a drawing of a weaving process;

figure 2a is a single pass woven stretchable wire diagram;

FIG. 2b is a right side view of the single pass woven tensile lead of FIG. 2 a;

FIG. 3 is a two-pass woven stretchable wire;

FIG. 4 is another dual pass woven stretchable wire;

FIG. 5 is a resistance of a single-channel woven tensile wire as a function of tensile strain;

figure 6 is a pictorial view of a single pass woven tensile lead.

Wherein, 1: a latex yarn core; 2: a textile fiber; 2-1, an embedded layer; 2-2, a convex part; 3: a conductive wire; 4: a spindle; 5: a turntable.

Detailed Description

The invention is further described below with reference to the accompanying drawings. The utility model provides a weave tensile wire, sets gradually from inside to outside into latex silk heart yearn 1, fabric fibre 2 and conductor wire 3, and fabric fibre 2 and conductor wire 3 are through weaving the cladding on the lateral wall of latex silk heart yearn 1.

A preparation method of a knitted stretchable wire adopts a conductive wire 3, fabric fibers 2 and a latex yarn core wire 1 as raw materials, and the three raw materials are knitted into the stretchable wire through mixed knitting, and the preparation method specifically comprises the following steps:

(1) firstly, combining a plurality of latex yarn core wires 1 into one strand of latex yarn core wire 1, and pre-stretching one strand of latex yarn core wire 1 to the elastic limit (about 150%);

(2) then, a plurality of conductive wires 3 and fabric fibers 2 are interwoven and woven on the pre-stretched latex yarn core wire 1, and the pre-strain is released after the weaving is finished to realize the stretchability of the whole structure.

The step (1) is stretched to about 150% of its elastic limit in order to make the knitted structure stretchable.

The knitting device adopts a 12-spindle knitting machine to perform synchronous knitting, the production stability and the production capacity are greatly improved, the tensile property of the prepared tensile lead is good, and the service life and the quality of a product can be effectively improved.

The first embodiment is as follows:

this example provides a design and preparation scheme for a single pass braided stretchable wire.

The core wire is made of four latex filaments with the diameter of 1mm, the fabric fiber 2 is made of 150D spandex filaments (D: the measurement unit of the size of the Denier fiber), and the conductive wire 3 is made of a copper wire (the resistance is about 0.2 omega/m) with an outer layer coated with a polyvinyl chloride insulating layer. Firstly, pre-stretching latex yarn to the elastic limit (about 150%), then weaving spandex fibers and a conductive wire 3 onto the latex yarn through a weaving machine, synchronously weaving a 12-spindle weaving machine by adopting a weaving device, arranging 6 rotary tables 5 at the bottom, and correspondingly arranging 2 spindles 4 on each rotary table 5, wherein the conductive wire 3 only occupies one spindle 4, and the other spindles 4 are spandex fibers, repeatedly and circularly inserting the conductive wire 3 into the fabric fibers 2 being woven in the weaving process, and when the conductive wire 3 occupies the spindles 4 and moves to the outer side of the rotary tables 5, the conductive wire 3 is covered on the outer side of the fabric fibers 2; when the conductive wire 3 occupies the spindle 4 and moves into the turntable 5, the fabric fiber 2 is coated outside the conductive wire 3. Therefore, the conductive wire 3 and the fabric fiber 2 are woven in a staggered mode, the whole structure is more stable, and the conductive wire 3 is not easy to slide in the repeated stretching process. As shown in fig. 2a and 2b, the single-strand conductive wires 3 are spirally arranged with the textile fibers 2 at equal intervals, and the single-channel knitted stretchable wire is formed by releasing the prestrain of the latex filaments after the knitting is finished. The stretchability of the overall structure can be adjusted by adjusting the density with which conductive wire 3 is woven on the core wire. The resistance of the braided stretchable wire in this embodiment as a function of strain is shown in fig. 5, and it can be seen that the stretchable wire has a large stretchability and the resistance does not change as the structure is stretched, indicating that the stretchable wire has a good electrical stability.

The conductive line 3 in this embodiment may be made of other conductive materials according to different requirements, such as: copper-plated aluminum alloy wires, copper-plated stainless steel wires, silver fibers and the like; other materials may also be used for the textile fibers 2, such as: polyester yarn, nylon yarn, polypropylene yarn, etc.

Example two:

the embodiment provides a design and preparation scheme of a double-channel woven stretchable wire.

The core wire is made of four latex filaments with the diameter of 1mm, the fabric fiber 2 is made of 150D spandex filaments (D: the measurement unit of the size of the Denier fiber), and the conductive wire 3 is made of a copper wire (the resistance is about 0.2 omega/m) with an outer layer coated with a polyvinyl chloride insulating layer. Firstly, pre-stretching latex yarn to the elastic limit (about 130%), then weaving spandex fibers and conductive wires 3 onto the latex yarn through a weaving machine, synchronously weaving a 12-spindle weaving machine by adopting a weaving device, arranging 6 rotary tables 5 at the bottom, and correspondingly arranging 2 spindles 4 on each rotary table 5, wherein the conductive wires 3 occupy two spindles 4, the spandex fibers are arranged on the rest spindles 4, the conductive wires 3 are repeatedly and circularly inserted into the fabric fibers 2 being woven in the weaving process, and the conductive wires 3 cover the outer sides of the fabric fibers 2 when the conductive wires 3 occupy the spindles 4 and move to the outer sides of the rotary tables 5; when the conductive wire 3 occupies the spindle 4 and moves into the turntable 5, the fabric fiber 2 is coated outside the conductive wire 3. Therefore, the conductive wire 3 and the fabric fiber 2 are woven in a staggered mode, the whole structure is more stable, and the conductive wire 3 is not easy to slide in the repeated stretching process. As shown in fig. 3, two conductive wires 3 are crossed in a spiral shape by weaving the fabric fibers 2 in opposite spiral directions, and the double-channel woven stretchable wire is formed by releasing the pre-strain of the latex yarn after weaving. The stretchability of the overall structure can be adjusted by adjusting the density with which conductive wire 3 is woven on the core wire.

The conductive line 3 in this embodiment may be made of other conductive materials according to different requirements, such as: copper-plated aluminum alloy wires, copper-plated stainless steel wires, silver fibers and the like; other materials may also be used for the textile fibers 2, such as: polyester yarn, nylon yarn, polypropylene yarn, etc.

Example three:

this example provides another design and preparation scheme for a two-pass braided stretchable wire.

The core wire is made of four latex filaments with the diameter of 1mm, the fabric fiber 2 is made of 150D spandex filaments (D: the measurement unit of the size of the Denier fiber), and the conductive wire 3 is made of a copper wire (the resistance is about 0.2 omega/m) with an outer layer coated with a polyvinyl chloride insulating layer. Firstly, pre-stretching latex yarn to the elastic limit (about 130%), then weaving spandex fibers and conductive wires 3 onto the latex yarn through a weaving machine, wherein the weaving device adopts a 12-spindle weaving machine to weave synchronously, 6 rotating discs 5 are arranged at the bottom, and each rotating disc 5 is correspondingly provided with 2 spindles 4 respectively, wherein the conductive wires 3 only occupy one spindle 4, but two mutually insulated conductive wires 3 are wound on the spindle 4, the other spindles 4 are all spandex fibers, in the weaving process, the conductive wires 3 are repeatedly and circularly inserted into the fabric fibers 2 being woven, and when the conductive wires 3 occupy the spindles 4 and move to the outer side of the rotating discs 5, the conductive wires 3 are coated on the outer side of the fabric fibers 2; when the conductive wire 3 occupies the spindle 4 and moves into the turntable 5, the fabric fiber 2 is coated outside the conductive wire 3. Therefore, the conductive wire 3 and the fabric fiber 2 are woven in a staggered mode, the whole structure is more stable, and the conductive wire 3 is not easy to slide in the repeated stretching process. As shown in fig. 4, a plurality of conductive wires 3 are combined into a plurality of conductive wires 3 arranged in parallel, the plurality of conductive wires 3 arranged in parallel are turned along the same spiral and woven into fabric fibers 2 arranged in a spiral shape at equal intervals, and the stretchable wire is formed by releasing the prestrain of the latex yarn after weaving. The stretchability of the overall structure can be adjusted by adjusting the density with which conductive wire 3 is woven on the core wire.

The conductive line 3 in this embodiment may be made of other conductive materials according to different requirements, such as: copper-plated aluminum alloy wires, copper-plated stainless steel wires, silver fibers and the like; other materials may also be used for the textile fibers 2, such as: polyester yarn, nylon yarn, polypropylene yarn, etc.

Example four:

as shown in fig. 2a and 6, a woven stretchable wire is characterized in that a latex yarn core 1, a fabric fiber 2 and a conductive wire 3 are sequentially arranged from inside to outside, and the fabric fiber 2 and the conductive wire 3 are coated on the outer side wall of the latex yarn core 1 by weaving.

As shown in fig. 2b, the fabric fiber 2 further comprises an embedded layer 2-1 embedded in the inner surface of the conductive wire 3, the embedded layer 2-1 is arranged to be of an annular structure and coated on the outer side wall of the latex yarn core wire 1, so that the stretched latex yarn core wire 1 can be recovered through the elastic capacity of the latex yarn core wire 1, the fabric fiber 2 is tightly coated on the outer wall of the latex yarn core wire 1, and meanwhile, the fabric fiber has good elastic expansion capacity, is safe and reliable to use, is not easy to break, and has long service life.

The textile fabric 2 further comprises uniformly distributed protrusions 2-2 protruding out of the outer surface of the conductive wire 3, as shown in fig. 2b, the protrusions 2-2 comprise a first edge and a second edge, an arc-shaped edge is arranged between the first edge and the second edge, more specifically, the first edge and the second edge extend outwards along the outer side wall of the conductive wire 3 in an arc-shaped manner and oppositely extend outwards, the transition of the first edge and the second edge is an arc-shaped edge, and the angle of the arc-shaped edge is set to be 30 degrees to 90 degrees.

The bulge 2-2 is formed by weaving, is embedded on the periphery of the conductive wire 3 by weaving, has a surrounding protection effect on the conductive wire 3, has certain elasticity and buffering performance in an arc-shaped structure of the bulge 2-2, is fixedly concentrated on the outer side of the conductive wire 3 by weaving to form certain strength, has extremely stable structure and good elastic capacity, and finally improves the elastic expansion capacity of the whole elastic braided wire. The above description is only one embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications, equivalent changes and modifications made to the above embodiments according to the technical spirit of the present invention still belong to the protection scope of the technical solution of the present invention.