Electromagnetic shielding cable and preparation method thereof

Abstract

The invention discloses an electromagnetic shielding cable, and relates to the technical field of cables, the electromagnetic shielding cable comprises a plurality of cable cores, the outer surfaces of the plurality of cable cores are fixedly sleeved with silicone rubber, a protection assembly is arranged between the outer surfaces of the plurality of silicone rubber, and the protection assembly comprises polyurethane foam and a shielding layer. During use, when two electromagnetic shielding cables need to be connected, the cable at one end is firstly inserted into the wiring terminal body, then a plurality of threaded columns are embedded into a plurality of pinions respectively, and a moving rod drives the pinions to rotate, so that the two electromagnetic shielding cables are connected with each other. According to the wiring terminal, the plurality of threaded columns are respectively embedded in the plurality of pinions in a threaded manner, so that connection between the threaded columns and the pinions is completed, parts, needing to be connected to the interior of the wiring terminal body, in the plurality of cables are fixed, and the problem that in the prior art, the connection operation between two electromagnetic shielding cables is complex, and the working efficiency is reduced is solved.

Description

Technical Field

[0001] The present invention relates to the field of cable technology, and in particular to an electromagnetic shielding cable and a preparation method thereof. Background Art

[0002] Electromagnetic shielded cables are cables used to reduce electromagnetic interference. They contain additional shielding layers in their structure to block and reflect external electromagnetic waves, thereby protecting the internally transmitted signals from interference. They are widely used in situations that require high signal integrity and low interference, such as telephone, cable TV, Internet, etc.

[0003] In the prior art, due to the limited length of the existing electromagnetic shielding cables, when a longer cable is needed during the cable installation process, when one end of the two cables needs to be connected, the two cables need to be stripped of the conductors and the shielding layer using a stripping tool, and then the two stripped conductors are twisted together and welded, and then the shielding layers are braided together and welded. In the process of connecting the shielding layer and the conductor layer, it is also necessary to ensure that the shielding layer and the conductor layer are coaxially connected, which complicates the operation and reduces the work efficiency of the connection between the two electromagnetic shielding cables.

[0004] Therefore, we propose an electromagnetic shielding cable and a preparation method thereof to solve the above-mentioned problems. Summary of the invention

[0005] The object of the present invention is to provide an electromagnetic shielding cable and a preparation method thereof, so as to solve the problem that the connection operation between two electromagnetic shielding cables is complicated and reduces the working efficiency as mentioned in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an electromagnetic shielding cable, comprising a plurality of wire cores, the outer surfaces of the plurality of wire cores are fixedly covered with silicone rubber, a protective component is arranged between the outer surfaces of the plurality of silicone rubbers, the protective component comprises polyurethane foam and a shielding layer, a fixed component is arranged near one end of the outer surface of the shielding layer, a connecting component is arranged near the other end of the outer surface of the shielding layer, the connecting component comprises a mounting sleeve, the outer surface of the mounting sleeve is threadedly connected with a connecting sleeve, a card slot is arranged near the center of the outer surface of the connecting sleeve, and a movable sleeve is rotatably connected inside the card slot A terminal body is arranged on the outer surface of the movable sleeve, a plurality of fixing rods are fixed on the outer surface of the terminal body, a fixing ring is fixedly installed between one ends of the plurality of fixing rods, a plurality of limit blocks are fixedly connected between the relative inner walls of the fixing rings, small gears are arranged inside the plurality of limit blocks, a large gear is meshed and connected between the outer surfaces of the plurality of small gears, a plurality of arc grooves are provided on the inner wall of the large gear, a support sleeve is fixedly provided on the outer surface of the terminal body near the center, a plurality of arc-shaped protrusions are fixed on the inner wall of the support sleeve, and a plurality of connecting holes are provided on the outer surface of one side of the large gear.

[0007] Preferably, a fixing plate is fixedly mounted on the outer surface of the terminal body near one side edge, a circular groove is provided on the outer surface of the fixing plate, and a ball is movably embedded in the circular groove.

[0008] Preferably, a moving rod is fixed to the outer surface of the ball, the inner wall of the mounting sleeve is fixedly connected to the outer surface of the shielding layer, and the outer surface of the large gear is rotatably connected to the inside of the supporting sleeve.

[0009] Preferably, the fixing assembly comprises a T-shaped sleeve, the inner wall of the T-shaped sleeve is fixedly connected to the outer surface of the shielding layer, and the outer surface of the T-shaped sleeve is threadedly connected to a threaded sleeve.

[0010] Preferably, a hollow barrel is fixed to the outer surface of the threaded sleeve, and a telescopic tube is movably embedded inside the hollow barrel.

[0011] Preferably, the outer surface of the telescopic tube movably penetrates to the outside of the hollow barrel, and a plurality of threaded columns are fixed to the outer surface of the telescopic tube.

[0012] Preferably, a plurality of limiting rods are movably embedded inside the T-shaped sleeve, and one end of each of the limiting rods is connected to the internal thread of the telescopic tube.

[0013] Preferably, the inner wall of the polyurethane foam is in contact with the outer surfaces of a plurality of silicone rubbers, an insulating sleeve is provided on the outer surface of the polyurethane foam, and adhesive tape is provided on the outer surface of the insulating sleeve.

[0014] Preferably, a tensile rope is arranged on the outer surface of the adhesive tape, a copper foil layer is arranged on the outer surface of the tensile rope, the outer surface of the copper foil layer contacts the inner wall of the shielding layer, and a spiral sleeve is arranged on the outer surface of the shielding layer.

[0015] A method for preparing an electromagnetic shielding cable comprises the following steps:

[0016] S1. In the process of processing and manufacturing electromagnetic shielding cables, the thick copper rod is first passed through a series of gradually shrinking wire drawing dies to continuously draw it thinner until the required wire diameter is reached. The thinned copper wire is annealed and twisted, and then put into a braiding machine to form a mesh structure, and then a wire core is formed. Then the high-quality rubber raw material is extruded through an extruder, and the wire core passes through the center of the extrusion die head. The silicone rubber is evenly coated on the surface of the wire core in the die head, thereby completing the wrapping of the wire core. Then the mixed polyurethane foam is injected into the mold through an injection device to fill the gap between the wire core and the mold. The polyurethane foam solidifies in the mold to form a uniform filling layer. Then the insulating material in a molten state is evenly extruded through the extruder and wrapped on the wire core to form an insulating sleeve;

[0017] S2, heating the colloid material to a molten state, passing it through the die of the extruder to evenly wrap it on the surface of the insulating sleeve to form a tape, then introducing one end of the anti-tension rope into the structure of the cable, fixing the starting end of the anti-tension rope on the outer surface of the tape by gluing, and then winding the anti-tension rope along the cable, and fixing the terminal end of the anti-tension rope to the tape by gluing to complete the installation of the anti-tension rope;

[0018] S3. The prepared copper foil layer is evenly wound on the cable along the axial direction of the electromagnetic shielding cable. After the winding is completed, the copper foil layer is fixed on the cable with tape, and the installation of the copper foil layer is completed. The copper foil layer effectively blocks external electromagnetic interference and prevents external electromagnetic interference from affecting the signal transmitted inside the cable. For example, in industrial sites with complex electromagnetic environments, the copper foil layer can reduce the interference of external electromagnetic fields on weak current signals in the cable, ensuring the accuracy and stability of signal transmission. Then, the tinned copper is made into fine metal wires, woven into a mesh structure, and directly covered on the outer surface of the copper foil layer to achieve a good electromagnetic shielding effect, and the installation of the shielding layer is completed.

[0019] S4. Use steel wire as armor material and adopt the longitudinal wrapping method, that is, wrap the steel belt along the axial direction of the cable and weld it at the edge to form a continuous protective layer. Weld at the edge of the steel belt to ensure the firmness and sealing of the connection, that is, realize the installation of the spiral sleeve.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. When in use, when two electromagnetic shielding cables need to be connected, first insert one end of the cable into the inside of the terminal body, then embed multiple threaded columns into the inside of multiple pinion gears respectively, and move the multiple pinion gears to rotate, so that the multiple threaded columns are respectively threadedly embedded in the inside of the multiple pinion gears, that is, the connection between the threaded columns and the pinion gears is completed, so that the parts of the multiple cables that need to be connected to the inside of the terminal body are fixed, which solves the problem of complicated connection operation between two electromagnetic shielding cables and reduced work efficiency in the prior art;

[0022] 2. When two electromagnetic shielding cables need to be connected, first insert the cable with one end of the fixing assembly into the inside of the terminal body, rotate the multiple limiting rods respectively, so that the multiple limiting rods are respectively moved out of the threaded holes inside the telescopic tube, and then the multiple limiting rods can be moved out from the inside of the T-shaped sleeve, and the telescopic tube can be pulled out from the inside of the hollow barrel. The limiting rods limit the telescopic tube to prevent it from moving when not in use;

[0023] 3. During use, in order to further enhance the protection of electromagnetic shielding cables, first wrap a layer of silicone rubber on the outer surface of the wire core formed by winding bare copper wire to ensure the stability of the electrical performance of the cable. Then, polyurethane foam can protect the wire core from external mechanical stress, which can absorb and disperse external impact force. Then, tape is wrapped around the outer surface of the insulating sleeve to enhance the insulation performance of the cable. The anti-tension rope is used to protect the core wire of the cable from damage. The copper foil layer and the shielding layer are used to enhance the anti-electromagnetic interference ability of the electromagnetic shielding cable. Finally, the spiral sleeve is used to increase the compression and tensile resistance of the cable, thereby preventing the cable from being affected by the external environment and unable to operate normally. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a front perspective view of an electromagnetic shielding cable of the present invention;

[0025] Figure 2 A side perspective view of an electromagnetic shielding cable according to the present invention;

[0026] Figure 3 A partial three-dimensional diagram of a protective component of an electromagnetic shielding cable of the present invention;

[0027] Figure 4 This is a three-dimensional diagram of the silicone rubber part of an electromagnetic shielding cable of the present invention;

[0028] Figure 5 It is a three-dimensional diagram of the telescopic tube part of an electromagnetic shielding cable of the present invention;

[0029] Figure 6 This is a three-dimensional diagram of the structure of several parts of a threaded sleeve of an electromagnetic shielding cable of the present invention;

[0030] Figure 7 It is a partially cutaway stereoscopic view of a telescopic tube of an electromagnetic shielding cable of the present invention;

[0031] Figure 8 This is a perspective view of the structure of a limiting rod of an electromagnetic shielding cable according to the present invention;

[0032] Fig. 9 It is a three-dimensional diagram of a fixing plate portion of an electromagnetic shielding cable of the present invention;

[0033] Fig.10 This is a three-dimensional diagram of an expanded movable sleeve structure of an electromagnetic shielding cable of the present invention;

[0034] Fig.11 It is a three-dimensional diagram of a fixing rod portion of an electromagnetic shielding cable of the present invention;

[0035] Fig.12 It is a cross-sectional stereoscopic diagram of a partial structure of a support sleeve of an electromagnetic shielding cable of the present invention;

[0036] Fig.13 The present invention is a cross-sectional stereoscopic diagram of a partial structure of a limit block of an electromagnetic shielding cable.

[0037] In the figure:

[0038] 1. Wire core; 2. Silicone rubber; 3. Protective components; 301. Polyurethane foam; 302. Insulation sleeve; 303. Adhesive tape; 304. Tensile rope; 305. Copper foil layer; 306. Shielding layer; 4. Spiral sleeve; 5. Fixing components; 501. T-shaped sleeve; 502. Threaded sleeve; 503. Hollow barrel; 504. Telescopic tube; 505. Threaded column; 6. Limit rod; 7. Connection components; 701. Installation Sleeve; 702, connecting sleeve; 703, slot; 704, movable sleeve; 705, terminal body; 706, fixing rod; 707, fixing ring; 708, limit block; 709, small gear; 710, large gear; 711, arc groove; 712, supporting sleeve; 713, arc convex block; 714, connecting hole; 715, fixing plate; 716, circular groove; 717, ball; 718, moving rod. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] Example 1: Reference Figure 1-13As shown: an electromagnetic shielding cable, including multiple wire cores 1, the outer surfaces of the multiple wire cores 1 are fixedly sleeved with silicone rubber 2, a protective component 3 is arranged between the outer surfaces of the multiple silicone rubbers 2, the protective component 3 includes a polyurethane foam 301 and a shielding layer 306, a fixing component 5 is arranged near one end of the outer surface of the shielding layer 306, a connecting component 7 is arranged near the other end of the outer surface of the shielding layer 306, the connecting component 7 includes a mounting sleeve 701, the outer surface of the mounting sleeve 701 is threadedly connected with a connecting sleeve 702, the outer surface of the connecting sleeve 702 is provided with a card slot 703 near the center, the inner part of the card slot 703 is rotatably connected with a movable sleeve 704, and the outer surface of the movable sleeve 704 is provided with a terminal body 705 A plurality of fixing rods 706 are fixed on the outer surface of the terminal body 705, a fixing ring 707 is fixedly installed between one ends of the plurality of fixing rods 706, a plurality of limit blocks 708 are fixedly connected between the opposite inner walls of the fixing ring 707, small gears 709 are arranged inside the plurality of limit blocks 708, a large gear 710 is meshedly connected between the outer surfaces of the plurality of small gears 709, a plurality of arc grooves 711 are provided on the inner wall of the large gear 710, a support sleeve 712 is fixedly provided near the center of the outer surface of the terminal body 705, a plurality of arc-shaped protrusions 713 are fixed on the inner wall of the support sleeve 712, a plurality of connection holes 714 are provided on the outer surface of one side of the large gear 710, and the outer surface of the terminal body 705 A fixing plate 715 is fixedly installed near one side edge of the surface, and a circular groove 716 is opened on the outer surface of the fixing plate 715, and a ball 717 is movably embedded in the inner part of the circular groove 716, and a moving rod 718 is fixed on the outer surface of the ball 717. The inner wall of the mounting sleeve 701 is fixedly connected to the outer surface of the shielding layer 306, and the outer surface of the large gear 710 is rotatably connected to the inner part of the supporting sleeve 712. The fixing component 5 includes a T-shaped sleeve 501, and the inner wall of the T-shaped sleeve 501 is fixedly connected to the outer surface of the shielding layer 306. The outer surface of the T-shaped sleeve 501 is threadedly connected with a threaded sleeve 502, and the outer surface of the threaded sleeve 502 is fixed with a hollow barrel 503, and the inner part of the hollow barrel 503 is movably embedded with a telescopic tube 504. The outer surface of the tube 504 is movable and penetrates to the outside of the hollow barrel 503. A plurality of threaded columns 505 are fixed to the outer surface of the telescopic tube 504. A plurality of limit rods 6 are movably embedded inside the T-shaped sleeve 501. One ends of the plurality of limit rods 6 are connected to the internal threads of the telescopic tube 504. The inner wall of the polyurethane foam 301 contacts the outer surfaces of the plurality of silicone rubbers 2. An insulating sleeve 302 is arranged on the outer surface of the polyurethane foam 301. Adhesive tape 303 is arranged on the outer surface of the insulating sleeve 302. A tensile rope 304 is arranged on the outer surface of the adhesive tape 303. A copper foil layer 305 is arranged on the outer surface of the tensile rope 304. The outer surface of the copper foil layer 305 contacts the inner wall of the shielding layer 306. A spiral sleeve 4 is arranged on the outer surface of the shielding layer 306.

[0041] In this embodiment, when it is necessary to connect two electromagnetic shielding cables, firstly, the cable with one end of the fixing component 5 is inserted into the interior of the terminal body 705, wherein the terminal body 705 is a component for realizing electrical connection, and its main function is to ensure reliable connection between the cables. After the cables are fixed, the plurality of limit rods 6 are rotated respectively, so that the plurality of limit rods 6 are respectively moved out of the threaded holes inside the telescopic tube 504, and then the plurality of limit rods 6 can be moved out from the interior of the T-shaped sleeve 501, and then the telescopic tube 504 can be pulled out from the interior of the hollow barrel 503, wherein, as shown in FIG. Figure 7 As shown, the inner cross section of the hollow barrel 503 matches the cross section of the telescopic tube 504, and both are T-shaped, which is to limit the telescopic tube 504 and facilitate its movement. The movement of the telescopic tube 504 drives the multiple threaded columns 505 to move, so that the multiple threaded columns 505 are respectively inserted into the interior of the multiple pinion gears 709, wherein, as shown in FIG. Fig.12 As shown, the interior of the pinion 709 is a thread groove. When the plurality of threaded columns 505 are respectively embedded in the interior of the plurality of pinion gears 709, the moving rod 718 moves along the circular groove 716, thereby driving the ball 717 to move along the circular groove 716. Fig.11 As shown, the inner wall of the circular groove 716 is an arc surface, the purpose of which is to embed the ball 717 inside the circular groove 716 to prevent it from moving out from the inside of the circular groove 716. When the moving rod 718 moves to the position closest to the large gear 710, one end of the moving rod 718 is just embedded in one of the connecting holes 714. The moving rod 718 moves along the circular groove 716 to drive the large gear 710 to rotate. Fig.12As shown, the interior of the large gear 710 and the support sleeve 712 are respectively provided with an upwardly protruding arc-shaped protrusion 713 and a downwardly recessed arc-shaped groove 711, the purpose of which is to limit the large gear 710 so that it cannot rotate without external force when it rotates to a certain position. The moving rod 718 drives the large gear 710 to rotate while also driving the plurality of small gears 709 to rotate. Through the rotation of the plurality of small gears 709, the plurality of threaded columns 505 are respectively threadedly embedded in the interior of the plurality of small gears 709 until one end of the threaded column 505 penetrates the outside of the small gear 709, that is, the connection between the threaded column 505 and the small gear 709 is completed, and the fixed connection between the terminal body 705 and the telescopic tube 504 is realized, so that the parts of the plurality of cables that need to be connected to the interior of the terminal body 705 are fixed to prevent them from moving out of the interior of the terminal body 705, wherein, when the moving rod 718 is used, the plurality of cables are connected to the interior of the terminal body 705. In the process of driving the large gear 710 to rotate, when the moving rod 718 moves along the circular groove 716 to a position away from the large gear 710, the moving rod 718 will move out from the inside of the connecting hole 714, and the moving rod 718 continues to move along the circular groove 716. When it moves to the position closest to the large gear 710, one end of the moving rod 718 is just embedded in the inside of another connecting hole 714. This cycle is repeated to realize the rotation of the large gear 710. When it is necessary to separate the two electromagnetic shielding cables, the moving rod 718 is moved in the opposite direction along the circular groove 716 to drive the large gear 710 and the small gear 709 to rotate in the opposite direction, so that the multiple threaded columns 505 can be moved out from the inside of the small gear 709. Through the cooperation of the fixing component 5 and the connecting component 7, the connection and disassembly between the two electromagnetic shielding cables are facilitated, which solves the problem of complex connection operation between the two electromagnetic shielding cables and reduced work efficiency in the prior art.

[0042] Embodiment 2: Figure 1-4 and Figure 9-13As shown: an electromagnetic shielding cable, including multiple wire cores 1, the outer surfaces of the multiple wire cores 1 are fixedly sleeved with silicone rubber 2, a protective component 3 is arranged between the outer surfaces of the multiple silicone rubbers 2, the protective component 3 includes a polyurethane foam 301 and a shielding layer 306, a fixing component 5 is arranged near one end of the outer surface of the shielding layer 306, a connecting component 7 is arranged near the other end of the outer surface of the shielding layer 306, the connecting component 7 includes a mounting sleeve 701, the outer surface of the mounting sleeve 701 is threadedly connected with a connecting sleeve 702, a card slot 703 is opened near the center of the outer surface of the connecting sleeve 702, the inner part of the card slot 703 is rotatably connected with a movable sleeve 704, a terminal body 705 is arranged on the outer surface of the movable sleeve 704, a plurality of fixing rods 706 are fixed on the outer surface of the terminal body 705, a fixing ring 707 is fixedly installed between one ends of the plurality of fixing rods 706, and the fixing ring 707 is fixed between the opposite inner walls. A plurality of limit blocks 708 are connected, and small gears 709 are arranged inside the plurality of limit blocks 708. A large gear 710 is meshed and connected between the outer surfaces of the plurality of small gears 709. A plurality of arc grooves 711 are provided on the inner wall of the large gear 710. A support sleeve 712 is fixedly sleeved near the center of the outer surface of the terminal body 705. A plurality of arc protrusions 713 are fixed on the inner wall of the support sleeve 712. A plurality of connecting holes 714 are provided on the outer surface of one side of the large gear 710. The inner wall of the polyurethane foam 301 contacts the outer surfaces of the plurality of silicone rubbers 2. An insulating sleeve 302 is arranged on the outer surface of the polyurethane foam 301. Adhesive tape 303 is arranged on the outer surface of the insulating sleeve 302. A tensile rope 304 is arranged on the outer surface of the adhesive tape 303. A copper foil layer 305 is arranged on the outer surface of the tensile rope 304. The outer surface of the copper foil layer 305 contacts the inner wall of the shielding layer 306. A spiral sleeve 4 is arranged on the outer surface of the shielding layer 306.

[0043] In this embodiment, in order to further enhance the protection of electromagnetic shielding cables, firstly, the outer surface of the wire core 1 formed by winding bare copper wires is wrapped with a layer of silicone rubber 2, wherein the silicone rubber 2 has excellent insulation performance, can effectively prevent current leakage, ensure the stability of the electrical performance of the cable, and has high temperature resistance, and can maintain stable performance in a high temperature environment, and then polyurethane foam 301 is wrapped on the outer surface of the plurality of silicone rubbers 2 through a mold, wherein the polyurethane foam 301 has good electrical insulation performance, can effectively isolate the conductor inside the cable from the external environment, thereby preventing current leakage. Leakage, to ensure the safe operation of the cable, the polyurethane foam 301 plays a role of buffering and supporting inside the cable, which can protect the core 1 from the influence of external mechanical stress, and it can absorb and disperse the external impact force, reduce the damage to the core, and then the insulating sleeve 302 is set on the outer surface of the polyurethane foam 301, wherein the insulating sleeve 302 is made of polyvinyl chloride, which has good chemical corrosion resistance, electrical insulation and flame retardancy, and the cost is relatively low, and then the adhesive paper 303 is wrapped around the outer surface of the insulating sleeve 302, wherein the adhesive paper 303 is made of cross-linked polyethylene. The heat resistance and mechanical properties of ordinary polyethylene are improved, the insulation performance of the cable is enhanced, and current leakage and short circuit are prevented, especially at the joints of the cable or the parts that need additional insulation reinforcement. The tensile rope 304 is then wrapped around the outside of the adhesive tape 303. The tensile rope 304 is made of aramid fiber and has excellent properties such as high strength, high modulus, high temperature resistance, and chemical corrosion resistance. When the electromagnetic shielding cable is subjected to tensile force, the tensile rope 304 can effectively share the tensile force and protect the core wire 1 of the cable from damage. The electromagnetic shielding is then enhanced by the copper foil layer 305 and the shielding layer 306. The cable's anti-electromagnetic interference capability, the shielding layer 306 is a tinned copper braided mesh, which effectively blocks the interference of electromagnetic signals in the external environment on the transmission signal in the cable, ensuring the integrity and accuracy of the signal, and then through the spiral sleeve 4 to increase the cable's compression and tensile resistance, wherein the spiral sleeve 4 is made of steel wire material, which can enhance the cable's compression, tensile and impact resistance, and protect the internal insulating sleeve 302, the wire core 1, etc. from external mechanical damage. For example, during the cable laying process, it may encounter dragging, squeezing, bumping, etc., and the armor layer can effectively reduce the damage of these external forces to the cable. In laying methods such as direct burial underground and crossing pipelines, the armor layer can prevent soil pressure, rock squeezing, etc. from damaging the cable, help maintain the shape and structure of the cable, reduce the deformation and twisting of the cable during use, and prevent animals from damaging the cable in some special environments. Through the role of the protective component 3 and the spiral sleeve 4, multiple protections for electromagnetic shielding cables are achieved to prevent the cable from being affected by the external environment and unable to operate normally. At the same time, it can also prevent the signal inside the cable from radiating outwards to avoid interference with other surrounding electronic devices.

[0044] In the present invention, when it is necessary to connect two electromagnetic shielding cables, firstly, the cable with one end of the fixing component 5 is inserted into the interior of the terminal body 705. After the cable is fixed, the plurality of limiting rods 6 are rotated respectively so that the plurality of limiting rods 6 are respectively moved out of the threaded holes inside the telescopic tube 504. Then, the plurality of limiting rods 6 can be moved out from the interior of the T-shaped sleeve 501, and then the telescopic tube 504 can be pulled out from the interior of the hollow barrel 503. The movement of the telescopic tube 504 drives the plurality of threaded columns 505 to move, so that the plurality of threaded columns 505 are respectively moved in and out of the interior of the plurality of pinion gears 709. After the plurality of threaded columns 505 are respectively embedded in the interior of the plurality of pinion gears 709, the moving rod 718 moves along the circular groove 716, thereby driving the ball 717 to move. When the moving rod 718 moves along the circular groove 716 to the position closest to the large gear 710, one end of the moving rod 718 is embedded in one of the connecting holes 714, and then the moving rod 718 moves along the circular groove 716 to drive the large gear 710 to rotate. When the moving rod 718 drives the large gear 710 to rotate, it also drives the plurality of small gears 709 to rotate. Through the rotation of the plurality of small gears 709, the plurality of threaded columns 505 are respectively threadedly embedded in the plurality of small gears 709 until one end of the threaded column 505 penetrates the outside of the small gear 709, that is, the connection between the threaded column 505 and the small gear 709 is completed, and the fixed connection between the terminal body 705 and the telescopic tube 504 is realized, so that The parts of the multiple cables that need to be connected to the inside of the terminal body 705 are fixed to prevent them from moving out from the inside of the terminal body 705. In the process of driving the large gear 710 to rotate by the moving rod 718, when the moving rod 718 moves along the circular groove 716 to a position away from the large gear 710, the moving rod 718 will move out from the inside of the connecting hole 714, and the moving rod 718 continues to move along the circular groove 716. When it moves to the position closest to the large gear 710, one end of the moving rod 718 is just embedded in the inside of another connecting hole 714. In this way, the rotation of the large gear 710 is realized. When it is necessary to separate the two electromagnetic shielding cables, the moving rod 718 moves in the opposite direction along the circular groove 716 to drive the large gear 710 to rotate. 10 and the pinion 709 rotate in the opposite direction to move the multiple threaded columns 505 out from the inside of the pinion 709. Through the cooperation of the fixing component 5 and the connecting component 7, in order to further enhance the protection of the electromagnetic shielding cable, firstly, the outer surface of the wire core 1 wound by the bare copper wire is wrapped with a layer of silicone rubber 2, wherein the silicone rubber 2 has excellent insulation performance, can effectively prevent current leakage, ensure the stability of the electrical performance of the cable, and has high temperature resistance, and can maintain stable performance in a high temperature environment. Then, the polyurethane foam 301 is wrapped on the outer surface of the multiple silicone rubbers 2 through a mold, and the polyurethane foam 301 has good electrical insulation performance, can effectively isolate the conductor inside the cable from the external environment, thereby preventing current leakage and ensuring the safe operation of the cable.The polyurethane foam 301 plays a role of buffering and supporting inside the cable, and can protect the wire core 1 from the influence of external mechanical stress. It can absorb and disperse external impact force and reduce damage to the wire core. Then the insulating sleeve 302 is sleeved on the outer surface of the polyurethane foam 301. The insulating sleeve 302 is made of polyvinyl chloride. Polyvinyl chloride has good chemical corrosion resistance, electrical insulation and flame retardancy, and the cost is relatively low. Then the adhesive tape 303 is wrapped around the outer surface of the insulating sleeve 302. The adhesive tape 303 is made of cross-linked polyethylene, which improves the heat resistance and mechanical properties of ordinary polyethylene, enhances the insulation performance of the cable, and prevents current leakage and short circuit, especially at the joints of the cable or the parts that need additional insulation reinforcement. Then the tensile rope 304 is wrapped around the adhesive tape 30 3, wherein the tension rope 304 is made of aramid fiber, and has excellent properties such as high strength, high modulus, high temperature resistance, and chemical corrosion resistance. When the electromagnetic shielding cable is subjected to tensile force, the tension rope 304 can effectively share the tension and protect the core wire 1 of the cable from damage. The anti-electromagnetic interference ability of the electromagnetic shielding cable is enhanced by the copper foil layer 305 and the shielding layer 306. The shielding layer 306 is a tinned copper braided mesh, which effectively blocks the interference of electromagnetic signals in the external environment on the transmission signal in the cable, ensuring the integrity and accuracy of the signal. The compression and tensile resistance of the cable are increased by the spiral sleeve 4, wherein the spiral sleeve 4 is made of steel wire material, which can enhance the compression, tensile and impact resistance of the cable, and protect the internal insulating sleeve 302, the core 1, etc. from external mechanical damage. ,

[0045] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modification, equivalent substitution, improvement, etc. of the specification made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. An electromagnetic shielding cable, comprising a plurality of wire cores (1), the outer surfaces of the plurality of wire cores (1) being fixedly covered with silicone rubber (2), a protective component (3) being arranged between the outer surfaces of the plurality of silicone rubbers (2), the protective component (3) comprising polyurethane foam (301) and a shielding layer (306), a fixing component (5) being arranged on the outer surface of the shielding layer (306) near one end, Features: A connection component (7) is arranged on the outer surface of the shielding layer (306) near the other end, and the connection component (7) includes a mounting sleeve (701), the outer surface of the mounting sleeve (701) is threadedly connected to a connection sleeve (702), a slot (703) is provided on the outer surface of the connection sleeve (702) near the center, a movable sleeve (704) is rotatably connected inside the slot (703), a terminal body (705) is arranged on the outer surface of the movable sleeve (704), a plurality of fixing rods (706) are fixed on the outer surface of the terminal body (705), and a fixing ring is fixedly installed between one end of the plurality of fixing rods (706). (707), a plurality of limit blocks (708) are fixedly connected between the relative inner walls of the fixing ring (707), a small gear (709) is arranged inside each of the limit blocks (708), a large gear (710) is meshedly connected between the outer surfaces of the plurality of small gears (709), a plurality of arc grooves (711) are provided on the inner wall of the large gear (710), a support sleeve (712) is fixedly provided near the center of the outer surface of the terminal body (705), a plurality of arc-shaped protrusions (713) are fixed on the inner wall of the support sleeve (712), and a plurality of connection holes (714) are provided on the outer surface of one side of the large gear (710).

2. The electromagnetic shielding cable according to claim 1, Features: A fixing plate (715) is fixedly mounted on the outer surface of the terminal body (705) near one side edge, and a circular groove (716) is provided on the outer surface of the fixing plate (715), and a ball (717) is movably embedded inside the circular groove (716).

3. The electromagnetic shielding cable according to claim 2, Features: A moving rod (718) is fixed to the outer surface of the ball (717), the inner wall of the mounting sleeve (701) is fixedly connected to the outer surface of the shielding layer (306), and the outer surface of the large gear (710) is rotatably connected to the inside of the support sleeve (712).

4. The electromagnetic shielding cable according to claim 3, Features: The fixing assembly (5) comprises a T-shaped sleeve (501), the inner wall of the T-shaped sleeve (501) is fixedly connected to the outer surface of the shielding layer (306), and the outer surface of the T-shaped sleeve (501) is threadedly connected to a threaded sleeve (502).

5. The electromagnetic shielding cable according to claim 4, Features: A hollow barrel (503) is fixed on the outer surface of the threaded sleeve (502), and a telescopic tube (504) is movably embedded inside the hollow barrel (503).

6. The electromagnetic shielding cable according to claim 5, Features: The outer surface of the telescopic tube (504) movably penetrates the outside of the hollow barrel (503), and a plurality of threaded columns (505) are fixed to the outer surface of the telescopic tube (504).

7. The electromagnetic shielding cable according to claim 6, Features: A plurality of limiting rods (6) are movably embedded inside the T-shaped sleeve (501), and one end of each of the limiting rods (6) is connected to the internal thread of the telescopic tube (504).

8. The electromagnetic shielding cable according to claim 7, Features: The inner wall of the polyurethane foam (301) is in contact with the outer surfaces of the plurality of silicone rubbers (2), an insulating sleeve (302) is provided on the outer surface of the polyurethane foam (301), and adhesive tape (303) is provided on the outer surface of the insulating sleeve (302).

9. The electromagnetic shielding cable according to claim 8, Features: A tensile rope (304) is arranged on the outer surface of the adhesive tape (303), a copper foil layer (305) is arranged on the outer surface of the tensile rope (304), the outer surface of the copper foil layer (305) is in contact with the inner wall of the shielding layer (306), and a spiral sleeve (4) is arranged on the outer surface of the shielding layer (306).

10. A method for preparing an electromagnetic shielding cable, It is characterized in that Using the electromagnetic shielding cable described in claims 1 to 9, comprising the following steps: S1. In the process of manufacturing electromagnetic shielding cables, firstly, a thick copper rod is passed through a series of gradually shrinking wire drawing dies to be continuously drawn thinner until the required wire diameter is reached. The drawn copper wire is annealed and twisted before being placed in a braiding machine to form a mesh structure, thereby forming a wire core (1). Then, a high-quality rubber raw material is extruded through an extruder, and the wire core (1) passes through the center of the extrusion die head. The silicone rubber (2) is evenly coated on the surface of the wire core (1) in the die head, thereby completing the wrapping of the wire core (1). Then, the mixed polyurethane foam (301) is injected into the mold through an injection device to fill the gap between the wire core (1) and the mold. The polyurethane foam (301) is solidified in the mold to form a uniform filling layer. Then, the insulating material in a molten state is evenly extruded through the extruder and wrapped on the wire core (1) to form an insulating sleeve (302); S2, heating the colloid material to a molten state, passing it through a die of an extruder to evenly wrap it around the surface of the insulating sleeve (302) to form an adhesive tape (303), then introducing one end of the anti-tension rope (304) into the structure of the cable, fixing the starting end of the anti-tension rope (304) on the outer surface of the adhesive tape (303) by gluing, then winding the anti-tension rope (304) along the cable, and fixing the terminal end of the anti-tension rope (304) to the adhesive tape (303) by gluing to complete the installation of the anti-tension rope (304); S3, the prepared copper foil layer (305) is evenly wound on the electromagnetic shielding cable along the axial direction of the cable. After the winding is completed, the copper foil layer (305) is fixed on the cable with an adhesive tape, and the installation of the copper foil layer (305) is completed. The copper foil layer (305) effectively blocks external electromagnetic interference and prevents external electromagnetic interference from affecting the signal transmitted inside the cable. For example, in industrial sites with complex electromagnetic environments, the copper foil layer (305) can reduce the interference of external electromagnetic fields on weak electric signals in the cable, ensuring the accuracy and stability of signal transmission. Then, the tinned copper is made into fine metal wires, woven into a mesh structure, and directly covered on the outer surface of the copper foil layer (305) to achieve a good electromagnetic shielding effect, and the installation of the shielding layer (306) is completed; S4. Use steel wire as armor material and adopt the longitudinal wrapping method, that is, wrap the steel strip along the axial direction of the cable and weld it at the edge to form a continuous protective layer. Welding is performed at the edge of the steel strip to ensure the firmness and sealing of the connection, that is, the installation of the spiral sleeve (4) is realized.

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