A communication cable for bundled radio frequency resistance and a processing method thereof

Abstract

The application discloses a communication cable for RF shielding, which comprises an outer sheath layer provided with a flexible shielding layer, a plurality of shielding sleeve layers are sleeved in the flexible shielding layer, the plurality of shielding sleeve layers are distributed along the annular direction at intervals with respect to the axis of the flexible shielding layer, a pair of insulating sleeve layers are sleeved in the shielding sleeve layers, and a plurality of wires are sleeved in the insulating sleeve layers; the outer sheath layer is provided with a retraction assembly, and the retraction assembly generates a pressing force inside the outer sheath layer. Through the above arrangement, each bundled wire in the same cable can be installed together, so that the space occupation is reduced, and the wires are easy to distinguish; and the electromagnetic interference and RF interference between adjacent wire pairs can be reduced.

Description

Technical Field

[0001] This invention relates to the technical field of cable structure and its processing technology, specifically to a communication cable for bundled radio frequency protection and its processing method. Background Technology

[0002] Conventional cables offer a download speed of 1Gbps in a 5G environment, with a theoretical peak speed of 10Gbps, supporting up to 1 million users per square kilometer. Therefore, by increasing the number of cables and laying them in clusters, the download speed of bundled cables in a 5G environment can reach up to 10Gbps. This demonstrates that increasing the density of cabling for device connections is essential for 5G data technology. Furthermore, a single cable typically contains multiple pairs of wires. Therefore, increasing cabling density requires consideration of space consumption within each bundle due to the large number of cables in each pair, and also the difficulty in distinguishing whether multiple cables belong to the same bundle. Additionally, during the clustering process, electromagnetic interference and radio frequency interference often occur between wire pairs. Summary of the Invention

[0003] In order to overcome the shortcomings of the prior art, the purpose of this invention is to provide a communication cable for bundled radio frequency protection and its processing method, which enables each bundled conductor in the same cable to be assembled together to reduce space occupation and facilitate differentiation; and can reduce electromagnetic interference and radio frequency interference between adjacent wire pairs.

[0004] The objective of this invention is achieved through the following technical solution:

[0005] A communication cable for clustered radio frequency protection includes an outer sheath with a flexible shielding layer, a plurality of shielding layers are provided inside the flexible shielding layer, the plurality of shielding layers are spaced apart in a circumferential direction about the axis of the flexible shielding layer, a pair of insulating layers are provided inside the shielding layers, and a plurality of conductors are provided inside the insulating layers; the outer sheath is provided with an inward retraction component, the inward retraction component generating a clamping force on the interior of the outer sheath.

[0006] Furthermore, the shielding sleeve is made of graphene material, the cross-section of the shielding sleeve is elliptical, one end of the cross-section of the shielding sleeve is located close to the axis of the flexible shielding layer, and the other end abuts against the inner wall of the flexible shielding layer. The two insulating sleeves inside the shielding sleeve abut against each other and are distributed on both sides of the cross-section of the shielding sleeve, and the insulating sleeves abut against the inner wall of the shielding sleeve.

[0007] Furthermore, the flexible shielding layer is provided with bundled drainage lines, and several shielding sleeves are distributed at intervals along the annular direction with respect to the bundled drainage lines.

[0008] Furthermore, a positioning sleeve is provided inside the flexible shielding layer, and a plurality of the drainage lines are bundled and sleeved inside the positioning sleeve. A plurality of locking strips are provided on the outer peripheral surface of the positioning sleeve. The length direction of the locking strips is consistent with the length direction of the positioning sleeve, and the number of locking strips is consistent with the number of shielding sleeve layers. A locking groove is formed between adjacent locking strips in the positioning sleeve. The side of the cross section of the shielding sleeve layer closest to the axis of the flexible shielding layer is inserted and positioned into the locking groove.

[0009] Furthermore, the inward-shrinking component includes a strip-shaped hole penetrating the end face of the outer sheath layer along its length direction. The number of strip-shaped holes is multiple, and the multiple strip-shaped holes are spaced apart about the axis of the outer sheath layer and along the annular direction. An annular hole is opened in the outer sheath layer, and the annular hole connects to the multiple strip-shaped holes. An air inlet is opened on the outer peripheral surface of the outer sheath layer, and the air inlet is connected to the inside of the strip-shaped hole. A sealing element is provided on the outer peripheral surface of the outer sheath layer, and the sealing element closes the air inlet.

[0010] Furthermore, the number of air inlets is multiple, and the air inlets are spaced apart along the length of the outer sheath. The sealing element includes a rubber sheath fitted on the outer peripheral surface of the outer sheath layer. The inner peripheral surface of the rubber sheath has a plurality of sealing blocks protruding therefrom. The plurality of sealing blocks correspond to the plurality of air inlets, and the sealing blocks are inserted into and sealed with the air inlets.

[0011] Furthermore, two extrusion layers are provided between the flexible shielding layer and the plurality of shielding sleeve layers. The cross-section of the extrusion layer is arc-shaped, and the arc-shaped openings of the two extrusion layers face each other. The plurality of shielding sleeve layers are all located within the arc-shaped openings of the two extrusion layers. A reset traction member is provided between the two extrusion layers, and the reset traction member generates a mutual traction force towards the position between the two extrusion layers.

[0012] Furthermore, the reset traction member includes an arc-shaped insertion hole opened on one end face of the extrusion layer near its arc-shaped opening. The arc-shaped insertion hole extends along the arc-shaped direction of the cross-section of the extrusion layer. An arc-shaped connecting hole is opened on the other end face of the extrusion layer near its arc-shaped opening and away from the arc-shaped insertion hole. The arc-shaped connecting hole extends along the arc-shaped direction of the cross-section of the extrusion layer to communicate with the arc-shaped insertion hole. An arc-shaped sealing strip is inserted into the arc-shaped insertion hole. A buffer strip is inserted into the arc-shaped connecting hole. A traction rope is fixedly connected to the end of the buffer strip away from the arc-shaped sealing strip. The end of the traction rope away from the buffer strip is fixedly connected to the other end face of the extrusion layer near its arc-shaped opening.

[0013] Furthermore, the number of arc-shaped insertion holes in the same extrusion layer is multiple, and the arc-shaped insertion holes are distributed at intervals along the length direction of the extrusion layer. The openings of the arc-shaped insertion holes in the same extrusion layer are all located on the same side end face of the extrusion layer. The traction ropes of the two extrusion layers are distributed on opposite sides, and the traction ropes of the two extrusion layers are staggered relative to each other along their length direction.

[0014] A method for fabricating a bundled radio frequency resistant communication cable includes the following steps:

[0015] Wire bundling installation operation: Bundle multiple wires together and place them inside the insulating sleeve; bundle multiple drain wires together and place them inside the positioning sleeve.

[0016] Wire pair bundling operation: Insert the insulating sleeve of a wire pair with multiple conductors into the shielding sleeve, and make the two insulating sleeves of the wire pair abut against the two inner walls of the shielding sleeve in the cross-sectional length direction, while the two insulating sleeves of the wire pair abut against each other.

[0017] Initial pre-tightening integrated installation operation: Insert multiple shielding sleeves with one-line insulating sleeves into multiple locking slots on the surface of the positioning sleeve for limiting and positioning. Then, insert a rolling ball into the space between two mutually opposing extrusion layers. The radius of the rolling ball is larger than the radius of curvature of the outer circumference of several insulating sleeves away from the positioning sleeve about the axis of the positioning sleeve. This ensures that the space between the two mutually opposing extrusion layers near the rolling ball is large enough for the positioning sleeve and the multiple shielding sleeves inserted on its surface to be inserted as a whole. Then, as the rolling ball rolls forward, it synchronously inserts the positioning sleeve and the multiple shielding sleeves inserted on its surface as a whole, and uses the two mutually opposing extrusion sleeves to press the multiple shielding sleeves on the surface of the positioning sleeve.

[0018] Installation procedure: A flexible shielding layer is formed by braiding copper wires on the surfaces of two opposing extruded layers. Then, an outer sheath is placed on the outer surface of the flexible shielding layer. Next, a rubber sheath is placed on the outer surface of the outer sheath, and the sealing block on the inner wall of the rubber sheath is inserted and sealed with the air inlet on the outer surface of the outer sheath.

[0019] Pre-tightening integrated installation operation: With both ends of the communication cable in a sealed connection state, fold one end of the rubber sheath outward along its length, while simultaneously pulling out a sealing block at the end from the air inlet. Then, insert a miniature one-way valve into the opening of the air inlet. The miniature one-way valve then introduces gas into multiple slots in the outer sheath layer through the pipeline and exhaust fan, causing the inner wall of the slots in the outer sheath layer to expand towards the flexible shielding layer, thereby compressing the flexible shielding layer. At the same time, it further compresses two extrusion layers to compress and position multiple shielding layers within the two extrusion layers.

[0020] The present invention has the following beneficial effects:

[0021] A type of communication cable for bundled radio frequency (RF) protection aims to group and install each bundle of conductors within the same cable together, reducing space occupation and facilitating differentiation; it also reduces electromagnetic interference and RF interference between adjacent wire pairs. Therefore, by nesting multiple conductors within an insulating sheath to form a bundled line, the switching bandwidth download speed of the line in a 5G environment can be increased and approached peak speed. Furthermore, by setting an insulating sheath with multiple conductors per wire pair within a shielding sheath, the good shielding effect of the shielding sheath can reduce the signal transmission of external transmission signals and interference signals to the bundled conductors within the insulating sheath of that wire pair, thereby reducing electromagnetic interference and video interference between adjacent wire pairs. Additionally, by nesting multiple shielding sheaths within the same flexible shielding layer, the shielding effect of the flexible shielding layer can reduce interference to the signal transmission of adjacent communication cables. Furthermore, by applying an outer sheath layer to the surface of the flexible shielding layer, the wear resistance of the outer sheath layer can reduce surface damage to the communication cable and increase its service life. At the same time, by setting an inward shrinkage component on the surface of the outer sheath layer, the inward shrinkage component generates a pressing force into the outer sheath layer, thereby squeezing the flexible shielding layer and also squeezing multiple shielding layers inside the flexible shielding layer toward the center position. This enables the installation of multiple conductors in a bundle, thereby saving space and making it easier to distinguish different insulating layers with multiple conductors.

[0022] A method for processing communication cables with bundled radio frequency protection mainly consists of five steps: conductor bundling installation, wire pair bundling, initial pre-tightening integration installation, sheathing installation, and pre-tightening integration installation. The conductor bundling installation involves bundling multiple conductors within an insulating sleeve, and similarly bundling multiple drain wires within a positioning sleeve, thus forming an integrated structure of the bundled conductors and drain wires, facilitating subsequent installation operations. The wire pair bundling operation involves inserting the insulating sleeve containing the bundled conductors of each wire pair into the shielding sleeve, and defining the contact position between these two insulating sleeves, thereby keeping the two insulating sleeves of each wire pair relatively fixed within the shielding sleeve. The initial pre-tightening integrated installation operation mainly utilizes a rolling ball for auxiliary installation. This ensures that the space between the two extruded layers is larger than the overall cross-sectional size of the shielding sleeves inserted into the positioning slots on the positioning sleeve surface. Due to the shape characteristics of the rolling ball, it can move flexibly between the two extruded layers with minimal resistance. Therefore, as the rolling ball rolls forward, it simultaneously inserts the positioning sleeve and multiple installed shielding sleeves into the space between the two extruded layers, simplifying the insertion and installation of the positioning sleeve and its surface shielding sleeves. The sheathing installation operation mainly involves placing a flexible shielding layer over the two opposing extruded layers to reduce radio frequency interference between the communication cable and the external environment. Then, an outer sheath layer is placed over this flexible shielding layer to provide good protection for the surface of the communication cable. Simultaneously, a rubber sleeve is placed on the surface of the outer sheath layer, and the sealing block is inserted and sealed with the air inlet, further protecting the surface of the copper core cable. The pre-tightening integrated installation operation mainly involves folding to release the sealing block at the end of the rubber sheath from the insertion of an air inlet at the end, thus facilitating the introduction of gas into the strip hole through the air inlet. This causes the strip hole to expand inward toward the outer sheath layer, thereby compressing the flexible shielding layer and multiple internal bottle sheath layers, resulting in a compact and stable overall structure. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0024] Figure 2 This is a cross-sectional view of the overall structure of the present invention.

[0025] Figure 3 This is an exploded cross-sectional view of the overall structure of the present invention.

[0026] Figure 4 for Figure 3 A magnified view of a portion of point A in the middle.

[0027] Figure 5 for Figure 3A magnified view of a section at point B.

[0028] Figure 6 This is a schematic diagram of the folded state of the rubber sheath of the present invention.

[0029] In the diagram: 1. Outer sheath layer; 11. Strip hole; 12. Annular hole; 13. Air inlet; 2. Rubber sheath; 21. Sealing block; 3. Flexible shielding layer; 4. Extrusion layer; 41. Arc-shaped insertion hole; 42. Arc-shaped connection hole; 43. Arc-shaped sealing strip; 44. Buffer strip; 45. Traction rope; 5. Shielding sleeve layer; 51. Insulating sleeve layer; 52. Wire; 6. Positioning sleeve; 61. Locking strip; 62. Locking groove; 63. Drainage line. Detailed Implementation

[0030] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. Terms such as “upper,” “inner,” “middle,” “left,” “right,” and “one” used in this specification are merely for clarity of description and are not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention.

[0031] Reference Figures 1 to 6 As shown, a communication cable for bundled radio frequency protection includes an outer sheath 1 with a flexible shielding layer 3, a plurality of shielding sleeves 5 inside the flexible shielding layer 3, the plurality of shielding sleeves 5 being spaced apart in a circumferential direction about the axis of the flexible shielding layer 3, a pair of insulating sleeves 51 inside the shielding sleeves 5, a plurality of conductors 52 inside the insulating sleeves 51, the number of conductors 52 in each insulating sleeve 51 should be less than or equal to ten, so as to improve the utilization rate of the bundled conductors 52 and enable the bundled conductors 52 to operate at near-peak speeds in a 5G environment; the outer sheath 1 is provided with an inward shrinkage component, which generates a clamping force against the interior of the outer sheath 1.

[0032] Specifically, this invention aims to integrate and install each bundled conductor 52 within the same cable to reduce space occupation and facilitate differentiation; it also reduces electromagnetic interference and radio frequency interference between adjacent conductor pairs. Therefore, by encasing multiple conductors 52 within an insulating sheath 51 to form a bundled line, the switching bandwidth download speed of this line in a 5G environment can be increased and approached its peak value. Furthermore, by setting an insulating sheath 51 with multiple conductors 52 within a shielding sheath 5, the excellent shielding effect of the shielding sheath 5 reduces the impact of external transmission signals and interference signals on the signal transmission of the bundled conductors 52 within the insulating sheath 51 of that conductor pair, thereby reducing electromagnetic interference and video interference between adjacent conductor pairs. Additionally, by encasing multiple shielding sheaths 5 within the same flexible shielding layer 3, the shielding effect of the flexible shielding layer 3 reduces interference to the signal transmission of adjacent communication cables. Furthermore, by applying an outer sheath layer 1 to the surface of the flexible shielding layer 3, the wear resistance of the outer sheath layer 1 can reduce surface damage to the communication cable and improve its service life. At the same time, by setting an inward shrinkage component on the surface of the outer sheath layer 1, the inward shrinkage component generates a pressing force into the outer sheath layer 1, thereby squeezing the flexible shielding layer 3 and also squeezing multiple shielding sleeves 5 inside the flexible shielding layer 3 toward the center position. This enables the multiple conductors 52 to be bundled and installed, thereby saving space and making it easier to distinguish different insulating sleeves 51 with multiple conductors 52.

[0033] Reference Figures 1 to 6 As shown, this is to achieve the function of mounting the insulating sleeve 51 onto the shielding sleeve 5. The shielding sleeve 5 is made of graphene material, which has excellent reflection, high frequency, and radio frequency noise reduction properties. The cross-section of the shielding sleeve 5 is elliptical. One end of the cross-section of the shielding sleeve 5 is close to the axis of the flexible shielding layer 3, while the other end abuts against the inner wall of the flexible shielding layer 3. The two insulating sleeves 51 inside the shielding sleeve 5 abut against each other and are distributed on both sides of the cross-section of the shielding sleeve 5, with the insulating sleeves 51 abutting against the inner wall of the shielding sleeve 5. Therefore, by defining the cross-section of the shielding layer 5, the two insulating layers 51, each with bundled wires 52, are distributed on the side near the axis of the flexible shielding layer 3 and the side near the inner wall of the flexible shielding layer 3, respectively. During use, the bundled wires 52 near the axis of the flexible shielding layer 3 are all used for transmitting or receiving signals. Thus, in subsequent troubleshooting and maintenance, the corresponding bundled wires 52 can be located in a timely and efficient manner, thereby facilitating differentiation and maintenance.

[0034] To reduce the noise current generated within the communication cable, a bundle of drainage lines 63 is installed within the flexible shielding layer 3. These drainage lines 63 are made of annealed tin-plated copper wire and have grounded ends. This allows the noise current in the cable to be led out and discharged into the ground, thereby reducing interference. Simultaneously, several shielding layers 5 are spaced out in a circular direction around the bundled drainage lines 63, ensuring a regular and easy-to-install arrangement of the multiple shielding layers 5.

[0035] To further facilitate the installation of the inner shielding sleeve 5 within the flexible shielding layer 3, a positioning sleeve 6 is inserted within the flexible shielding layer 3. A bundle of drainage lines 63 are fitted inside the positioning sleeve 6. Several locking strips 61 are provided on the outer circumferential surface of the positioning sleeve 6. The length direction of the locking strips 61 is consistent with the length direction of the positioning sleeve 6, and the number of locking strips 61 is the same as the number of shielding sleeves 5. A locking groove 62 is formed between adjacent locking strips 61 in the positioning sleeve 6. The side of the shielding sleeve 5 closest to the axis of the flexible shielding layer 3 in its cross-section is inserted into the locking groove 62 for positioning. Thus, by providing multiple locking strips 61 on the outer circumferential surface of the positioning sleeve 6, locking grooves 62 are formed at the holes between adjacent locking strips 61, allowing one end of the shielding sleeve 5 to be inserted and positioned along its cross-sectional length. This allows the shielding sleeve 5 to be better installed within the space between the positioning sleeve 6 and the flexible shielding layer 3, thereby simplifying the installation operation.

[0036] Reference Figures 1 to 6 As shown, in order to achieve the function of the inner shrinking component generating a pressing force into the outer sheath layer 1, thereby squeezing the multiple inner shielding layers 5, the outer sheath layer 1 is made of rubber material. The inner shrinking component includes a strip-shaped hole 11 penetrating the end face of the outer sheath layer 1 along its length direction. There are multiple strip-shaped holes 11, and the strip-shaped holes 11 are evenly distributed about the axis of the outer sheath layer 1 and along the annular direction. An annular hole 12 is opened in the outer sheath layer 1, and the annular hole 12 extends along the annular direction of the cross-section of the outer sheath layer 1. The annular hole 12 connects to the multiple strip-shaped holes 11. An air inlet hole 13 is opened on the outer peripheral surface of the outer sheath layer 1, and the air inlet hole 13 is connected to the inner part of the strip-shaped hole 11. A sealing element is provided on the outer peripheral surface of the outer sheath layer 1, and the sealing element closes the air inlet hole 13. Specifically, since the outer sheath layer 1 is made of rubber, gas is discharged into the air inlet 13 under the premise that the opening of the strip hole 11 at the end of the outer sheath layer 1 along the length direction is sealed. This increases the gas in the strip hole 11 of the outer sheath layer 1, causing it to expand inward towards the outer sheath layer 1, thereby compressing the flexible shielding layer 3 and the multiple shielding sleeves 5 inside the flexible shielding layer 3. This makes the internal multiple shielding sleeves 5 structure more compact, thus achieving the effect of saving space.

[0037] To enable the expansion function of the slot 11 towards the inner side of the outer sheath layer 1, the cross-section of the slot 11 is arc-shaped, with the arc opening of the slot 11 facing inward towards the outer sheath layer 1. The distance between the inner wall of the slot 11 near the inner circumferential surface of the outer sheath layer 1 and the inner circumferential surface of the outer sheath layer 1 is 0.35-0.85 mm. The distance between the inner wall of the slot 11 near the inner circumferential surface of the outer sheath layer 1 and the inner circumferential surface of the outer sheath layer 1 is smaller than the distance between the inner wall of the slot 11 near the outer circumferential surface of the outer sheath layer 1 and the outer circumferential surface of the outer sheath layer 1. Because the thickness is relatively thin, when the opening of the slot 11 is in a sealed state, the expansion function of the slot 11 towards the inner side of the outer sheath layer 1 is achieved by venting air into the air inlet 13.

[0038] The number of air inlets 13 is multiple, and these air inlets 13 are spaced apart along the length of the outer sheath. The sealing element includes a rubber sheath 2 fitted onto the outer circumferential surface of the outer sheath layer 1. Several sealing blocks 21 protrude from the inner circumferential surface of the rubber sheath 2, and these sealing blocks 21 correspond to the air inlets 13, and are inserted into the air inlets 13 for sealing. Specifically, by fitting a rubber sheath 2 onto the surface of the outer sheath layer 1, and simultaneously using the sealing blocks 21 on the inner circumferential surface of the rubber sheath 2 to insert and seal with the air inlets 13, the function of sealing multiple air inlets 13 is achieved. After the communication cable of the present invention is installed, fixed, and sealed at both ends, one end of the rubber sheath 2 can be flipped open, thereby releasing one of the sealing blocks 21 from the air inlet 13, facilitating the discharge of gas into the air inlet 13 through a pipe. This causes the strip-shaped hole 11 to expand towards the flexible shielding layer 3, thereby compressing the flexible shielding layer 3 and multiple shielding sleeve layers 5.

[0039] To achieve the desired compression of multiple shielding sleeve layers 5 within the flexible shielding layer 3 during processing, two compression layers 4 are disposed between the flexible shielding layer 3 and the shielding sleeve layers 5. The cross-section of each compression layer 4 is arc-shaped, with the arc-shaped openings of the two compression layers 4 facing each other. All shielding sleeve layers 5 are located within the arc-shaped openings of the two compression layers 4. A reset traction member is disposed between the two compression layers 4, generating a mutual traction force towards the position between the two compression layers 4. Specifically, by providing a reset traction member between the two compression layers 4, since the reset traction member generates a mutual traction force towards the position between the two compression layers 4, after the multiple shielding sleeve layers 5 are inserted into the position between the two compression layers 4, the reset traction member can be used to compress the two compression layers against each other, thereby achieving the function of compressing and fixing the multiple internal shielding sleeve layers 5.

[0040] To achieve the function of the reset traction component generating mutual traction force between the two extrusion layers 4, the reset traction component includes an arc-shaped insertion hole 41 opened on one end face of the extrusion layer 4 near its arc-shaped opening. The arc-shaped insertion hole 41 extends along the arc-shaped direction of the cross-section of the extrusion layer 4. An arc-shaped connecting hole 42 is opened on the other end face of the extrusion layer 4 near its arc-shaped opening and away from the arc-shaped insertion hole 41. The arc-shaped connecting hole 42 extends along the arc-shaped direction of the cross-section of the extrusion layer 4 and communicates with the arc-shaped insertion hole 41. An arc-shaped sealing strip 43 is inserted into the arc-shaped insertion hole 41. A buffer strip 44 is inserted into the arc-shaped connecting hole 42. A traction rope 45 is fixedly connected to the end of the buffer strip 44 away from the arc-shaped sealing strip 43. The end of the traction rope 45 away from the buffer strip 44 is fixedly connected to the end face of the other extrusion layer 4 near its arc-shaped opening. There are multiple arc-shaped insertion holes 41 in the same extrusion layer 4. Several arc-shaped insertion holes 41 are distributed at intervals along the length direction of the extrusion layer 4, and the openings of several arc-shaped insertion holes 41 in the same extrusion layer 4 are all located on the same side end face of the extrusion layer 4. The traction ropes 45 of the two extrusion layers 4 are distributed on opposite sides, and the traction ropes 45 of the two extrusion layers 4 are staggered along their length direction.

[0041] Specifically, since the traction ropes 45 of the two compression layers 4 are distributed on opposite sides and are staggered along their length, when the two compression layers 4 are unfolded, the buffer strip 44 slides away from the arc-shaped sealing strip 43. The space within the arc-shaped connecting hole 42 between the buffer strip 44 and the arc-shaped sealing strip 43 is in a relatively sealed environment. Therefore, during the sliding of the buffer strip 44 away from the arc-shaped sealing strip 43, the space within the arc-shaped connecting hole 42 between the buffer strip 44 and the arc-shaped sealing strip 43 is under negative pressure, resulting in a reset and rebound effect. This causes the two compression layers 4 to move closer together and compress, thus achieving the function of compressing and positioning multiple shielding sleeve layers 5 within the two compression layers 4. The reset traction rope 45 is elastic; therefore, during the pulling of the two compression layers 4, the elasticity of the reset traction rope 45 can be used to compress and position multiple shielding sleeve layers 5 in the middle.

[0042] A method for fabricating a bundled radio frequency resistant communication cable includes the following steps:

[0043] Installation of conductor 52 bundle: Bundle multiple conductors 52 and place them inside the insulating sleeve 51; bundle multiple drain wires 63 and place them inside the positioning sleeve 6.

[0044] Wire pair bundling operation: Insert the insulating sleeve 51 of a wire pair with multiple conductors 52 into the shielding sleeve 5, and make the two insulating sleeves 51 of the wire pair abut against the two inner walls of the shielding sleeve 5 in the cross-sectional length direction, while the two insulating sleeves 51 of the wire pair abut against each other.

[0045] Initial pre-tightening integrated installation operation: Insert multiple shielding sleeves 5 with one-line insulating sleeves 51 into multiple locking grooves 62 on the surface of the positioning sleeve 6 for positioning and limiting. Then, insert a rolling ball (not shown in the figure) into the space between two mutually opposing extrusion layers 4. The radius of the rolling ball is larger than the radius of curvature of the outer peripheral surface of several insulating sleeves 51 away from the positioning sleeve 6 about the axis of the positioning sleeve 6, so that the space between the two mutually opposing extrusion layers 4 near the rolling ball is large enough for the positioning sleeve 6 and the multiple shielding sleeves 5 inserted on its surface to be inserted as a whole. Then, as the rolling ball rolls forward, the positioning sleeve 6 and the multiple shielding sleeves 5 inserted on its surface are inserted synchronously, and the multiple shielding sleeves 5 on the surface of the positioning sleeve 6 are pressed by the two mutually opposing extrusion sleeves.

[0046] Sleeve installation operation: A flexible shielding layer 3 is formed by braiding copper wire on the surfaces of two opposing extrusion layers 4. Then, an outer sheath layer 1 is applied to the outer surface of the flexible shielding layer 3. Next, a rubber sheath 2 is applied to the outer surface of the outer sheath layer 1, and the sealing block 21 on the inner wall of the rubber sheath 2 is inserted and sealed with the air inlet 13 on the outer surface of the outer sheath layer.

[0047] Pre-tightening integrated installation operation: With both ends of the communication cable in a sealed connection state, fold one end of the rubber sheath 2 outward along its length direction, while simultaneously pulling out a sealing block 21 at the end from the air inlet 13. Then, insert a miniature one-way valve (not shown in the figure) into the opening of the air inlet 13. The miniature one-way valve then introduces gas into the multiple strip holes 11 of the outer sheath layer 1 through the pipeline and the exhaust fan, causing the inner wall of the strip holes 11 of the outer sheath layer 1 to expand towards the flexible shielding layer 3, thereby compressing the flexible shielding layer 3. At the same time, it further compresses the two compression layers 4 to compress and position the multiple shielding layers 5 within the two compression layers 4.

[0048] Specifically, the processing method of the communication cable of the present invention mainly consists of five steps: conductor 52 bundling installation, wire pair bundling, initial pre-tightening integrated installation, sheathing installation, and pre-tightening integrated installation. The conductor 52 bundling installation mainly involves bundling multiple conductors 52 and placing them inside the insulating sleeve 51, and similarly bundling multiple drain wires 63 inside the positioning sleeve 6, thereby forming an integrated structure of the bundled conductors 52 and bundled drain wires 63, facilitating subsequent installation operations. The wire pair bundling operation mainly involves inserting the insulating sleeve 51 containing the bundled conductors 52 of each wire pair into the shielding sleeve 5, and defining the installation contact position of these two insulating sleeves 51, thereby keeping the two insulating sleeves 51 of each wire pair in a relatively fixed state within the shielding sleeve 5. The initial pre-tightening integrated installation operation mainly utilizes a rolling ball for auxiliary installation. This ensures that the space between the two extruded layers 4 is larger than the overall cross-sectional size of the shielding sleeves 5 inserted into the slots 62 on the surface of the positioning sleeve 6. Due to the shape characteristics of the rolling ball, it can move flexibly between the two extruded layers 4 with minimal resistance. Therefore, as the rolling ball rolls forward, it simultaneously inserts the positioning sleeve 6 and the multiple installed shielding sleeves 5 into the space between the two extruded extruded layers 4, thus simplifying the insertion and installation of the positioning sleeve 6 and its surface shielding sleeves 5. The sheathing installation operation mainly involves placing a flexible shielding layer 3 over the two opposing extruded layers 4 to reduce radio frequency interference between the communication cable and the external environment. Then, an outer sheath layer 1 is placed over this flexible shielding layer 3 to provide good protection for the surface of the communication cable. At the same time, a rubber sheath 2 is placed on the surface of the outer sheath layer 1, and the sealing block 21 is inserted and sealed with the air inlet 13, thereby further protecting the surface of the copper core cable. The pre-tightening integrated installation operation mainly involves folding to release the connection between a sealing block 21 at the end of the rubber sheath 2 and an air inlet 13 at the end, thereby facilitating the introduction of gas into the strip hole 11 through the air inlet 13. This causes the strip hole 11 to expand inward toward the outer sheath layer 1, thereby compressing the flexible shielding layer 3 and multiple internal bottle sheath layers, resulting in a compact and stable overall structure.

[0049] The embodiments of the present invention are not limited thereto. Based on the above description of the present invention, and using common technical knowledge and conventional means in the field, the present invention can be modified, replaced or combined in various other forms without departing from the basic technical idea of ​​the present invention, and all such modifications, replacements or combinations fall within the scope of protection of the present invention.

Claims

1. A communication cable for bundling radio frequency resistance, characterized by: The outer sheath layer is sleeved with a flexible shielding layer, a plurality of shielding sleeve layers are sleeved in the flexible shielding layer, the shielding sleeve layers are distributed in the annular direction about the axis of the flexible shielding layer, a pair of insulating sleeve layers are sleeved in the shielding sleeve layers, and a plurality of wires are sleeved in the insulating sleeve layers; the outer sheath layer is provided with a retraction assembly, and the retraction assembly generates a pressing force inside the outer sheath layer. The retraction assembly comprises strip-shaped holes penetrating through the end faces of the outer sheath layer in the length direction, the number of the strip-shaped holes is multiple, and the strip-shaped holes are distributed in the annular direction about the axis of the outer sheath layer; an annular hole is formed in the outer sheath layer, the annular hole is communicated with the strip-shaped holes, an air inlet hole is formed in the outer periphery of the outer sheath layer, the air inlet hole is communicated with the strip-shaped holes, and a sealing element is arranged on the outer periphery of the outer sheath layer and opens and closes the air inlet hole.

2. A communications cable for bundled radio frequency resistance as defined in Claim 1, wherein: The shielding sleeve layer is made of graphene material, the cross section of the shielding sleeve layer is oval, one end of the cross section of the shielding sleeve layer in the length direction is arranged close to the axis of the flexible shielding layer, and the other end is arranged close to the inner wall of the flexible shielding layer, the two insulating sleeve layers in the shielding sleeve layer are in abutment and are distributed on both sides of the cross section of the shielding sleeve layer in the length direction, and the insulating sleeve layers are in abutment with the inner wall of the shielding sleeve layer.

3. A communications cable for RF shielding as recited in claim 2, wherein: A bundle of drainage lines is arranged in the flexible shielding layer, and the plurality of shielding sleeve layers are distributed in the annular direction about the bundle of drainage lines.

4. A communications cable for RF shielding as recited in claim 3, wherein: A positioning sleeve is arranged in the flexible shielding layer, the bundle of drainage lines is sleeved in the positioning sleeve, a plurality of clamping strips are arranged on the outer periphery of the positioning sleeve, the length direction of the clamping strips is consistent with the length direction of the positioning sleeve, the number of the clamping strips is consistent with the number of the shielding sleeve layers, clamping grooves are formed between adjacent clamping strips in the positioning sleeve, and one side of the cross section of the shielding sleeve layer close to the axis of the flexible shielding layer is inserted and positioned in the clamping grooves.

5. A communications cable for RF shielding as recited in claim 4, wherein: The number of the air inlet holes is multiple, and the air inlet holes are distributed in the length direction of the outer sheath; the sealing element comprises a rubber sheath sleeved on the outer periphery of the outer sheath layer, the inner periphery of the rubber sheath protrudes a plurality of sealing blocks, the sealing blocks correspond to the air inlet holes, and the sealing blocks and the air inlet holes are inserted and sealed.

6. A communications cable for RF shielding as recited in claim 5, wherein: Two extrusion layers are arranged between the flexible shielding layer and the plurality of shielding sleeve layers, the cross section of the extrusion layer is arc-shaped, the arc-shaped openings of the two extrusion layers face each other, the plurality of shielding sleeve layers are located in the arc-shaped openings of the two extrusion layers, and a reset traction element is arranged between the two extrusion layers, the reset traction element generates a mutual traction force towards the position between the two extrusion layers.

7. A communications cable for RF bundle shielding as defined in claim 6, wherein: The reset traction piece includes an arc-shaped insertion hole opened on one end face of the extrusion layer close to the arc-shaped opening, the arc-shaped insertion hole extends along the cross-sectional arc-shaped direction of the extrusion layer, the other end face of the extrusion layer close to the arc-shaped opening is provided with an arc-shaped connecting hole, the arc-shaped connecting hole extends along the cross-sectional arc-shaped direction of the extrusion layer, and the arc-shaped connecting hole is in communication with the arc-shaped insertion hole, the arc-shaped insertion hole is inserted with an arc-shaped sealing strip, the arc-shaped connecting hole is inserted with a buffer strip, the buffer strip is fixedly connected with a traction rope at the end away from the arc-shaped sealing strip, and the end of the traction rope away from the buffer strip is fixedly connected with the end face of the other extrusion layer close to the arc-shaped opening.

8. A communications cable for RF shielding as recited in claim 7, wherein: The number of the arc-shaped insertion holes in the same extrusion layer is multiple, the arc-shaped insertion holes are distributed at intervals along the length direction of the extrusion layer, the orifices of the arc-shaped insertion holes in the same extrusion layer are located on the same side end face of the extrusion layer, the traction ropes of the two extrusion layers are distributed on the opposite sides, and the traction ropes of the two extrusion layers are staggered along the length direction.

9. A method of processing a communication cable for RF bundle according to claim 6, wherein, The method comprises the following steps: Wire bundle installation operation: a plurality of wires are bundled in the insulating sleeve layer, and a plurality of drain wires are bundled in the positioning sleeve; Wire pair bundle operation: the insulating sleeve layer with a plurality of wires of a wire pair is inserted into the shielding sleeve layer, and the two insulating sleeve layers of the wire pair are respectively abutted against the two inner walls of the shielding sleeve layer in the length direction of the cross section, and the two insulating sleeve layers of the wire pair are abutted against each other; Primary pre-tightening integrated installation operation: the shielding sleeve layers with a wire pair insulating sleeve layer are respectively inserted into the plurality of clamping grooves on the surface of the positioning sleeve, and then a ball is inserted into the space between the two mutually facing extrusion layers, the ball radius is greater than the curvature radius of the outer circumferential surface of the plurality of insulating sleeve layers away from the positioning sleeve about the axis of the positioning sleeve, so that the space between the two mutually facing extrusion layers close to the ball side is large enough for the positioning sleeve and the plurality of shielding sleeve layers inserted into the surface of the positioning sleeve to be inserted as a whole, then, as the ball rolls forward, the plurality of shielding sleeve layers inserted into the surface of the positioning sleeve are inserted as a whole, and the two mutually extruding sleeves extrude the plurality of shielding sleeve layers on the surface of the positioning sleeve; Sleeve installation operation: a flexible shielding layer is formed by copper wire weaving on the surface of the two mutually facing extrusion layers, then an outer sleeve layer is sleeved on the outer surface of the flexible shielding layer, then a rubber sleeve is sleeved on the outer surface of the outer sleeve layer, and the sealing plug on the inner wall of the rubber sleeve is inserted into the air inlet hole on the outer surface of the outer sleeve layer. Pre-tightening integrated installation operation: when the communication cable is in a connected and sealed state at both ends, the rubber sleeve is folded outward at one end along the length direction, and one sealing plug at the end is pulled out of the air inlet hole, then a miniature one-way valve is inserted into the orifice of the air inlet hole, then the miniature one-way valve is connected to the pipeline and the air pump to introduce gas into the plurality of strip-shaped holes in the outer sleeve layer, so that the inner wall of the strip-shaped hole in the outer sleeve layer expands towards the flexible shielding layer to extrude the flexible shielding layer, and further extrude the two extrusion layers to extrude the plurality of shielding sleeve layers in the two extrusion layers.

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