Covering device for elastic composite fibers and method for manufacturing same

Abstract

The application discloses a kind of elastic composite fiber covering device and preparation method thereof.The covering device includes covering pipe, first conveying component, second conveying component and driving assembly, and the inside of covering pipe is equipped with intercommunication first pipeline and second pipeline, first pipeline is along the axial extension of covering pipe and is arranged, and second pipeline is along the radial extension of covering pipe and is connected with the side wall of first pipeline;First conveying component is used to drive first wire along first pipeline and moves;Second conveying component is connected to covering pipe, for conveying second wire towards second pipeline;Driving assembly is connected with covering pipe, can drive covering pipe and second conveying component rotate around first wire, so that second wire is wound on the outer peripheral wall of first wire along the axial direction of wire.The application can solve the technical problem that rigid wire material is difficult to be wound on the outer peripheral wall of soft and elastic fiber, and also can produce elastic composite fiber with different length sizes.

Description

Technical Field

[0001] This invention relates to the field of wire processing technology, and in particular to a coating device for elastic composite fibers and its preparation method. Background Technology

[0002] In related technologies, coating devices typically rely on spiral winding of metal wires or other types of yarns along the fiber's axial direction to form functional coated yarns. Rigid metal wire materials lack sufficient flexibility and elasticity, making it difficult for existing coating devices to coil and wind them around the outer wall of soft and elastic fibers. Furthermore, existing coating devices often only produce short-length coated yarns, failing to meet the production needs of coated yarns of varying lengths. Summary of the Invention

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a coating device for elastic composite fibers, which not only solves the technical problem that rigid metal wire materials are difficult to wind into soft and elastic fibers, but also removes the production length limitation of existing coating devices, thereby enabling the production of elastic composite fibers of different lengths and meeting the production needs of elastic composite fibers of different lengths.

[0004] The present invention also proposes a method for preparing elastic composite fibers applicable to the above-mentioned coating device.

[0005] According to a first aspect of the present invention, a coating device for elastic composite fibers is provided, comprising: a coating tube, a first conveying assembly, a second conveying assembly, and a driving assembly. The coating tube has a first conduit and a second conduit that are interconnected inside it. The first conduit extends axially along the coating tube, and the second conduit extends radially along the coating tube and is connected to the side wall of the first conduit. The first conveying assembly is used to drive a first wire to move along the first conduit. The second conveying assembly is connected to the coating tube and is used to convey a second wire toward the second conduit. The driving assembly is connected to the coating tube and is capable of driving the coating tube and the second conveying assembly to rotate around the first wire, so that the second wire is wound around the outer peripheral wall of the first wire along the axial direction of the wire.

[0006] A coating device for elastic composite fibers according to an embodiment of the present invention has at least the following beneficial effects:

[0007] This invention provides an embodiment of a coating tube with interconnected first and second conduits inside. The first conduit extends axially along the coating tube, while the second conduit extends radially and connects to the sidewall of the first conduit. A second conveying assembly connected to the coating tube delivers a second wire into the second conduit. Driven by a driving assembly, the coating tube and the second conveying assembly rotate around the first wire, causing the second wire to wrap around the outer periphery of the first wire axially. The first conveying assembly then drives the first wire to move along the first conduit. As the first wire continues to move, the second wire continuously wraps around it, enabling the production of elastic composite fibers of different lengths. This satisfies the production needs of elastic composite fibers of varying lengths and improves the production diversity and flexibility of the coating device.

[0008] According to some embodiments of the present invention, the minimum inner diameter of the first conduit is a, the maximum outer diameter of the first wire is b, and the maximum outer diameter of the second wire is c, wherein a, b, and c satisfy: ab-2*c≤0.1mm.

[0009] According to some embodiments of the present invention, the second conveying assembly includes a roller and a connecting part, one end of the connecting part is fixedly connected to the outer peripheral wall of the covering tube, and the other end is rotatably connected to the roller, one end of the second wire is wound around the outer peripheral wall of the roller, and the other end passes through the second pipeline, and the roller is rotatable relative to the covering tube.

[0010] According to some embodiments of the present invention, the coating device further includes a base and two supports, the two supports being spaced apart on the base along the axial direction of the coating tube, and the two ends of the coating tube being rotatably connected to the two supports respectively.

[0011] According to some embodiments of the present invention, each of the brackets is provided with a bearing, the bearing having a through hole suitable for the first wire to pass through and communicating with the first conduit, the inner wall of the through hole being connected to the end face of the bearing by a circular arc surface transition.

[0012] According to some embodiments of the present invention, the driving assembly includes a driving wheel, a driven wheel, a transmission component, and a first driving device. The driving wheel is connected to the output end of the first driving device, and the driving wheel is connected to the driven wheel through the transmission component. The driven wheel is sleeved on the covering tube, and the first driving device can drive the driven wheel to rotate through the driving wheel, thereby driving the covering tube to rotate.

[0013] According to some embodiments of the present invention, the transmission component is a belt.

[0014] According to some embodiments of the present invention, the first conveying assembly includes a second driving device and two sets of conveying assemblies. The two sets of conveying assemblies are respectively disposed on both sides of the axial direction of the covering tube. Each set of conveying assemblies includes two conveying rollers spaced apart along the height direction. The second driving device is used to drive the two conveying rollers to rotate so that the two conveying rollers cooperate to move the first wire toward the first pipeline.

[0015] According to some embodiments of the present invention, the second conveying assembly further includes a third drive device for driving the roller to rotate.

[0016] According to a second aspect of the present invention, a method for preparing elastic composite fibers is provided, which is applied to the coating apparatus disclosed in the first aspect of the present invention, the preparation method comprising:

[0017] S1: Pass the first wire through the first conduit;

[0018] S2: Pass the second wire through the second conduit and the first conduit in sequence;

[0019] S3: Wrap the second wire around the first wire at least one turn, and fix the end of the second wire to the first wire;

[0020] S4: Activate the first conveying assembly and the driving assembly to drive the covering tube and the second conveying assembly to rotate around the first wire to form the elastic composite fiber;

[0021] S5: Intermittently dripping adhesive onto the elastic composite fiber to accelerate drying.

[0022] The preparation method for elastic composite fibers according to embodiments of the present invention has at least the following beneficial effects:

[0023] The preparation method of the elastic composite fiber in this embodiment of the invention is applied to the coating device of the first aspect embodiment. The preparation method includes: S1: passing the first wire through the first pipe; S2: passing the second wire through the second pipe and the first pipe in sequence; S3: winding the second wire around the first wire at least once and fixing the end of the second wire to the first wire; S4: activating the first conveying component and the driving component to drive the coating tube and the second conveying component to rotate around the first wire to form the elastic composite fiber; S5: intermittently dripping accelerated dry glue onto the elastic composite fiber, thereby enabling the production of elastic composite fibers of different lengths, meeting the production needs of elastic composite fibers of different lengths, and improving the production diversity and flexibility of the coating device.

[0024] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0026] Figure 1 This is a schematic diagram of an embodiment of the coating device of the present invention;

[0027] Figure 2 This is a schematic diagram of a coating tube and a second conveying assembly in an embodiment of a coating device according to the present invention;

[0028] Figure 3 This is a partial cross-sectional view of the coating tube in an embodiment of the coating device of the present invention;

[0029] Figure 4 This is a schematic diagram of the first and second pipelines in an embodiment of the coating device of the present invention;

[0030] Figure 5 This is a schematic diagram of the elastic composite fibers produced in an embodiment of the coating device of the present invention;

[0031] Figure 6 This is a schematic diagram of a driving component in one embodiment of the coating device of the present invention;

[0032] Figure 7 This is a schematic diagram of a support in one embodiment of the covering device of the present invention;

[0033] Figure 8 for Figure 7 Enlarged view of point A in the middle.

[0034] Figure label:

[0035] Coating device 1000;

[0036] Covered pipe 100; First pipeline 110; Second pipeline 120;

[0037] First conveying assembly 200; conveying assembly 210; conveying roller 211;

[0038] Second conveying assembly 300; roller 310; connecting part 320;

[0039] Drive assembly 400; drive wheel 410; driven wheel 420; transmission component 430; first drive device 440;

[0040] Base 500; bracket 600; bearing 610; through hole 611; arc surface 612;

[0041] First wire 700; Second wire 800; Elastic composite fiber 900. Detailed Implementation

[0042] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0043] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, inside, outside, etc., are based on the orientation or positional relationship shown in the drawings and are only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0044] In the description of this invention, the use of "first" and "second" is for the purpose of distinguishing technical features only, and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the order of the technical features indicated.

[0045] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0046] In related technologies, a coating device is typically used to wind metal wires or other types of wires in a spiral shape along the fiber axis to form a functional coated wire. However, existing coating devices often can only process and produce relatively short coated wires, making it difficult to meet the production needs of coated wires of different lengths.

[0047] Therefore, some embodiments of the present invention provide a coating device 1000 for elastic composite fiber 900, as detailed in the accompanying drawings. Figures 1-8 As shown.

[0048] Reference Figure 5As shown, in this embodiment of the invention, the elastic composite fiber 900 can be formed by spirally winding the second wire 800 along the axial direction of the first wire 700 around the outer peripheral wall of the first wire 700. In this embodiment, the first wire 700 can be various fibers, and the second wire 800 can be materials such as carbon fiber, graphene, carbon nanotube fiber, silver nanowire, optical fiber, or various conductive wires. Those skilled in the art can selectively configure the first wire 700 and the second wire 800 according to the required function of the elastic composite fiber 900, and this embodiment does not limit this. For example, in order to produce an elastic fiber with conductive properties, the first wire 700 can be selected as polyurethane elastic yarn, and the second wire 800 can be selected as ultrafine phosphor bronze wire. It should be noted that the elastic composite fiber 900 prepared by the coating device 1000 of this embodiment of the invention can have a micron-level size.

[0049] Reference Figure 1 , Figure 2 and Figure 3 As shown, in this embodiment of the invention, the coating device 1000 for the elastic composite fiber 900 may include: a coating tube 100, a first conveying assembly 200, a second conveying assembly 300, and a driving assembly 400. The coating tube 100 may have a first conduit 110 and a second conduit 120 that are interconnected. Specifically, the first conduit 110 is suitable for the elastic composite fiber 900 formed by the second wire 800 being wound around the first wire 700 to pass through, and the second conduit 120 is suitable for the second wire 800 to pass through. Specifically, the first conduit 110 may extend axially along the coating tube 100 and penetrate both axial sidewalls of the first conduit 110. The second conduit 120 extends radially along the coating tube 100 and connects to the sidewall of the first conduit 110; that is, one end of the second conduit 120 penetrates the outer peripheral wall of the coating tube 100, and the other end connects to the first conduit 110.

[0050] Reference Figure 1 , Figure 2 and Figure 3As shown, in this embodiment of the invention, the first conveying component 200 can be used to drive the first wire 700 to move along the first conduit 110. Specifically, the first conveying component 200 conveys the first wire 700 to the first conduit 110 and causes the first wire 700 to move continuously along the first conduit 110. The second conveying component 300 is connected to the covering tube 100, therefore, the relative position of the second conveying component 300 and the covering tube 100 remains unchanged. The second conveying component 300 can be used to convey the second wire 800 to the second conduit 120, and the second wire 800 can enter the first conduit 110 after passing through the second conduit 120. It can be understood that since the first conduit 110 is suitable for the elastic composite fiber 900 formed by the second wire 800 being wound around the first wire 700 to pass through, the second wire 800 entering the first conduit 110 is located in the gap between the first wire 700 and the inner wall of the first conduit 110.

[0051] Reference Figure 1 , Figure 4 and Figure 5 As shown, in this embodiment of the invention, the driving component 400 can be connected to the covering tube 100. The driving component 400 can drive the covering tube 100 and the second conveying component 300 to rotate around the first wire 700, so that the second wire 800 is wound around the outer peripheral wall of the first wire 700 along the axial direction of the wire. Specifically, the driving component 400 can directly drive the covering tube 100 to rotate around the first wire 700. Since the second conveying component 300 is connected to the covering tube 100, the covering tube 100 can drive the second conveying component 300 to rotate synchronously around the first wire 700. Based on this, under the compression of the outer peripheral wall of the first wire 700 and the inner wall of the first conduit 110, the second wire 800, which enters the first conduit 110 from the second conduit 120, can move circumferentially around the first wire 700. Simultaneously, the first conveying assembly 200 continuously moves the first wire 700. Therefore, the second wire 800 can be wound around the outer peripheral wall of the first wire 700 along the axial direction, thereby forming an elastic composite fiber 900. It should be noted that... Figure 4 The middle arrow indicates the direction of movement of the second wire 800.

[0052] It is understood that, in this embodiment of the invention, the length of the produced elastic composite fiber 900 can be determined by controlling the length of the first wire 700, or the elastic composite fiber 900 can be cut by workers manually or by a cutting device to form the elastic composite fiber 900 of the required length.

[0053] In this embodiment of the invention, a covering tube 100 is provided, and a first conduit 110 and a second conduit 120 are interconnected inside the covering tube 100. The first conduit 110 extends axially along the covering tube 100, and the second conduit 120 extends radially along the covering tube 100 and is connected to the side wall of the first conduit 110. A second conveying assembly 300 connected to the covering tube 100 conveys a second wire 800 towards the second conduit 120. Under the drive of the driving assembly 400, the covering tube 100 and the second conveying assembly 300 can rotate... The first wire 700 rotates so that the second wire 800 is wound around the outer peripheral wall of the first wire 700 along the axial direction of the wire. Then, the first wire 700 is driven to move along the first pipeline 110 by the first conveying assembly 200. During the continuous movement of the first wire 700, the second wire 800 can be continuously wound around the first wire 700, thereby enabling the production of elastic composite fibers 900 of different lengths and sizes, meeting the production needs of elastic composite fibers 900 of different lengths and sizes, and improving the production diversity and flexibility of the coating device 1000.

[0054] It should be noted that when preparing elastic composite fiber 900 using the existing elastic composite fiber 900 apparatus, the second wire is prone to shaking during the process of wrapping the first wire with the second wire, making it difficult to accurately wrap around the outer peripheral wall of the first wire, resulting in the failure of elastic composite fiber 900 preparation. Based on this, referring to... Figure 4 As shown, in this embodiment of the invention, the minimum inner diameter of the first conduit 110 can be 'a', the maximum outer diameter of the first wire 700 can be 'b', and the maximum outer diameter of the second wire 800 can be 'c', where 'a', 'b', and 'c' satisfy: ab - 2 * c ≤ 0.1 mm. It can be understood that in this embodiment, the outer diameter of the elastic composite fiber 900 is the sum of the outer diameter of the first wire 700 and twice the outer diameter of the second wire 800. Therefore, in order to apply sufficient compressive force to the second wire 800 entering the first conduit 110, the gap between the outer peripheral wall of the first wire 700 and the inner wall of the first conduit 110 should be just suitable for the passage of the second wire 800, thereby restricting the movement of the second wire 800 and allowing it to fit tightly against the outer peripheral wall of the first wire 700. This improves the compactness and integrity of the elastic composite fiber 900, making the structure of the elastic composite fiber 900 more stable.

[0055] Reference Figure 1 and Figure 2As shown, in this embodiment of the invention, the second conveying assembly 300 may include a roller 310 and a connecting portion 320. One end of the connecting portion 320 may be fixedly connected to the outer peripheral wall of the covering tube 100, and the other end may be rotatably connected to the roller 310. In this embodiment, the connecting portion 320 may be integrally formed with the covering tube 100, or it may be connected to the covering tube 100 by means of screw connection, welding, or other fixed connection methods. Those skilled in the art can choose the setting according to the actual situation, and this embodiment does not limit it in this way. One end of the second wire 800 is wound around the outer peripheral wall of the roller 310, and the other end passes through the second pipe 120. The roller 310 can rotate relative to the covering tube 100. It can be understood that the second wire 800 can be stored by winding around the outer peripheral wall of the roller 310. Therefore, in order to allow the second wire 800 on the roller 310 to smoothly enter the second pipe 120, the roller 310 can release the second wire 800 by rotating, so that the second wire 800 can smoothly enter the second pipe 120, thereby improving the continuity of the feeding of the second wire 800.

[0056] Reference Figure 1 and Figure 2 As shown in the embodiment of the invention, the second conveying assembly 300 may further include a third driving device (not shown) for driving the roller 310 to rotate. The third driving device may be connected to the roller 310 to drive the roller 310 to rotate, so that the roller 310 can release the second wire 800 as needed. In this embodiment, the third driving device may be a motor or a lead screw device or other driving equipment. Those skilled in the art can choose to set it according to the actual situation, and this embodiment does not limit it.

[0057] Reference Figure 1 As shown, in this embodiment of the invention, the coating device 1000 may further include a base 500 and two supports 600. The two supports 600 may be spaced apart on the base 500 along the axial direction of the coating tube 100. Specifically, the base 500 may be horizontally arranged, and the two supports 600 may be fixedly connected to the base 500 respectively. Specifically, they may be connected to the base 500 by screws or welded to the base 500. Other forms of fixed connection are also possible. Those skilled in the art can choose the appropriate configuration based on the actual situation, and this embodiment does not limit this. Both ends of the coating tube 100 may be rotatably connected to the two supports 600 respectively. It is understood that the coating tube 100 may rotate relative to the two supports 600. At the same time, the two supports 600 can provide support for the coating tube 100, thereby improving its stability during rotation, ensuring that the relative position of the coating tube 100 and the first wire 700 remains unchanged, improving the winding accuracy of the second wire 800, and thus improving the quality of the elastic composite fiber 900.

[0058] Reference Figure 1 , Figure 7 and Figure 8 As shown, in this embodiment of the invention, each bracket 600 may be provided with a bearing 610, and the bearing 610 may be provided with a through hole 611 suitable for the first wire 700 to pass through and communicate with the first conduit 110. It can be understood that the through holes 611 on the two bearings 610 can be the inlet and outlet of the first conduit 110, respectively. Based on this, in order to ensure that the first wire 700 accurately enters the first conduit 110, the inner wall of the through hole 611 and the end face of the bearing 610 are transitionally connected by an arc surface 612. The arc surface 612 can guide the first wire 700 to accurately enter the first conduit 110.

[0059] Reference Figure 1 and Figure 6 As shown, in this embodiment of the invention, the driving assembly 400 may include a driving wheel 410, a driven wheel 420, a transmission component 430, and a first driving device 440. The driving wheel 410 can be connected to the output end of the first driving device 440, meaning the first driving device 440 can directly drive the driving wheel 410 to rotate. The driving wheel 410 can be connected to the driven wheel 420 via the transmission component 430, thereby driving the driven wheel 420 to rotate. The driven wheel 420 can be sleeved on the covering tube 100. When the driven wheel 420 rotates, it can drive the covering tube 100 to rotate synchronously. The first driving device 440 can drive the driven wheel 420 to rotate via the driving wheel 410, thereby driving the covering tube 100 to rotate. In this embodiment, the first driving device 440 can be a motor, a lead screw device, or other driving equipment. Those skilled in the art can choose the appropriate configuration based on actual conditions; this embodiment does not limit this choice.

[0060] Reference Figure 6 As shown, in this embodiment of the invention, the transmission component 430 is a belt. It is understood that belt drives have advantages such as smooth operation and simple structure. Based on this, in this embodiment, the drive wheel 410 and the driven wheel 420 can be connected by a belt.

[0061] Reference Figure 1As shown, in this embodiment of the invention, the first conveying assembly 200 may include a second driving device (not shown) and two sets of conveying assemblies 210. The second driving device may be connected to the two sets of conveying assemblies 210 respectively. The two sets of conveying assemblies 210 may be respectively located on both sides of the axial direction of the covering tube 100, that is, one set of conveying assemblies 210 is located on the side of the inlet of the covering tube 100, and the other set of conveying assemblies 210 is located on the side of the outlet of the covering tube 100. Each set of conveying assemblies 210 may include two conveying rollers 211 spaced apart along the height direction. The second driving device may be used to drive the two conveying rollers 211 to rotate, so that the two conveying rollers 211 cooperate to drive the first wire 700 to move toward the first pipeline 110. It is understood that the two conveying rollers 211 can rotate about the horizontal radial direction of the covering tube 100, so the moving direction of the first wire 700 can be defined as toward the first pipeline 110, thereby realizing the continuous movement of the first wire 700 along the first pipeline 110 and improving the accuracy of the moving direction of the first wire 700. It should be noted that the conveying rate of the conveying component 210 located on the outlet side of the covering tube 100 can be greater than the conveying rate of the conveying component 210 located on the inlet side of the covering tube 100. This embodiment does not limit the difference between the two conveying rates.

[0062] The embodiments of the present invention also provide a method for preparing elastic composite fiber 900, applied to the coating device 1000 of the above embodiments, the preparation method comprising:

[0063] S1: Pass the first wire through the first conduit;

[0064] S2: Pass the second wire through the second conduit and the first conduit in sequence;

[0065] S3: Wrap the second wire around the first wire at least one turn and fix the end of the second wire to the first wire;

[0066] S4: Start the first conveying assembly and the drive assembly to drive the coating tube and the second conveying assembly to rotate around the first wire to form elastic composite fibers;

[0067] S5: Intermittent dripping accelerates the drying of adhesive onto elastic composite fibers.

[0068] In one example, the first wire 700 is a polyurethane elastic filament with a diameter of 80-90 micrometers; the second wire 800 is an ultrafine phosphor bronze wire with a diameter of 25-30 micrometers. The maximum inner diameter of the first conduit 110 is 250 micrometers.

[0069] In this embodiment of the invention, the first wire 700 is first hooked tightly with a thin, long needle and passed sequentially through two conveyor rollers 211, the first conduit 110 in the covering tube 100, and two more conveyor rollers 211, keeping the first wire 700 taut at all times. The second wire 800, located in the roller 310, is then hooked tightly with a thin, long needle and passed sequentially through the second conduit 120 and the first conduit 110. The front end of the second wire 800 is wrapped around the first wire 700 at least one turn, and the front end of the second wire 800 is fixedly connected to the first wire 700, preventing relative slippage between the first wire 700 and the second wire 800. The first conveying assembly 200 and the drive assembly 400 are activated, causing the first wire 700 to move continuously along the first conduit 110. During this process, the second wire 800 wraps around the circumference of the first wire 700 and along its axial direction to the outer peripheral wall of the first wire 700. The resulting elastic composite fiber 900 continues to move along the first conduit 110 and exits through the covering tube 100. To improve the stability and integrity of the elastic composite fiber 900, accelerated drying adhesive can be intermittently dripped onto the elastic composite fiber 900, enabling it to maintain its spiral structure for a long time.

[0070] In this embodiment, an elastomer can be coated on the outer surface of the elastic composite fiber 900. Specifically, the elastomer can be a material such as spandex or rubber, thereby enabling the elastic composite fiber to have the ability to elastically recover.

[0071] The method for preparing the elastic composite fiber 900 in this embodiment of the invention is applied to the coating device 1000 of the first aspect embodiment. The preparation method includes: S1: passing a first wire 700 through a first pipe 110; S2: passing a second wire 800 sequentially through a second pipe 120 and a first pipe 110; S3: wrapping the second wire 800 around the first wire 700 at least one turn, and fixing the end of the second wire 800 to the first wire 700; S4: activating the first conveying component 200 and the driving component 400 to drive the coating tube 100 and the second conveying component 300 to rotate around the first wire 700 to form the elastic composite fiber 900; S5: intermittently dripping accelerated dry glue onto the elastic composite fiber 900, thereby enabling the production of elastic composite fibers 900 of different lengths, meeting the production needs of elastic composite fibers 900 of different lengths, and improving the production diversity and flexibility of the coating device 1000.

[0072] Since the preparation method of elastic composite fiber 900 adopts all the technical solutions of the coating device 1000 in the above embodiments, it has at least all the beneficial effects brought about by the technical solutions in the above embodiments, and will not be repeated here.

[0073] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A coating device for elastic composite fibers, characterized in that, include: The covered tube has a first pipe and a second pipe that are interconnected inside. The first pipe extends along the axial direction of the covered tube, and the second pipe extends along the radial direction of the covered tube and is connected to the side wall of the first pipe. A first conveying assembly is used to drive a first wire to move along the first pipeline, wherein the first wire is a polyurethane elastic filament. A second conveying assembly is connected to the covering tube and is used to convey a second wire into the second pipeline. The second conveying assembly includes a roller and a connecting part. One end of the connecting part is fixedly connected to the outer peripheral wall of the covering tube, and the other end is rotatably connected to the roller. One end of the second wire is wound around the outer peripheral wall of the roller, and the other end passes through the second pipeline. The roller can rotate relative to the covering tube. The second wire is a phosphor bronze wire, carbon fiber, graphene, carbon nanotube fiber, silver nanowire, or optical fiber. A drive assembly, connected to the coating tube, is capable of driving the coating tube and the second conveying assembly to rotate around the first wire, so that the second wire is wound around the outer peripheral wall of the first wire along the axial direction of the first wire. The drive assembly includes a drive wheel, a driven wheel, a transmission component, and a first drive device. The drive wheel is connected to the output end of the first drive device. The drive wheel is connected to the driven wheel through the transmission component. The driven wheel is sleeved on the coating tube. The first drive device can drive the driven wheel to rotate through the drive wheel, thereby driving the coating tube to rotate. The minimum inner diameter of the first conduit is a, the maximum outer diameter of the first wire is b, and the maximum outer diameter of the second wire is c. a, b, and c satisfy: ab-2×c≤0.1mm.

2. The coating device according to claim 1, characterized in that, The coating device further includes a base and two supports. The two supports are spaced apart on the base along the axial direction of the coating tube, and the two ends of the coating tube are rotatably connected to the two supports respectively.

3. The coating device according to claim 2, characterized in that, Each of the brackets is provided with a bearing, the bearing having a through hole suitable for the first wire to pass through and communicating with the first conduit, the inner wall of the through hole being connected to the end face of the bearing by a rounded surface transition.

4. The coating device according to claim 1, characterized in that, The transmission component is a belt.

5. The coating device according to claim 1, characterized in that, The first conveying assembly includes a second driving device and two sets of conveying assemblies. The two sets of conveying assemblies are respectively located on both sides of the axial direction of the covering tube. Each set of conveying assemblies includes two conveying rollers spaced apart along the height direction. The second driving device is used to drive the two conveying rollers to rotate so that the two conveying rollers cooperate to move the first wire toward the first pipeline.

6. The coating device according to claim 1, characterized in that, The second conveying assembly also includes a third drive device for driving the roller to rotate.

7. A method for preparing elastic composite fibers, applied to the coating device as described in any one of claims 1 to 6, characterized in that, The preparation method includes: S1: Pass the first wire through the first conduit; S2: Pass the second wire through the second conduit and the first conduit in sequence; S3: Wrap the second wire around the first wire at least one turn, and fix the end of the second wire to the first wire; S4: Activate the first conveying assembly and the driving assembly to drive the covering tube and the second conveying assembly to rotate around the first wire to form the elastic composite fiber; S5: Intermittently dripping adhesive onto the elastic composite fiber to accelerate drying.

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