Anti-interference shielding PVC cable structure and production process

Abstract

The invention relates to the technical field of cable production, in particular to an anti-interference shielding PVC (polyvinyl chloride) cable structure and a production process thereof, and the production process comprises the following steps: stranding a plurality of copper cores into a wire, and wrapping a high-density high-temperature-resistant polyvinyl chloride material on the outer side of the wire in an injection molding manner; the aluminum-plastic composite film belt, the tinned copper mesh belt and the copper foil belt are sequentially wrapped on the surface of the wire to form multiple shielding; injecting the molten weather-resistant polyvinyl chloride composite material into an injection molding box to tightly wrap the wire to form outer layer protection; starting a water pump to pump an external water source, introducing the external water source into a plurality of mutually connected annular pipes through a water pipe, and spraying the water to a wire through a sprinkler head for cooling; the aluminum plastic film blocks low-frequency interference, the copper net absorbs high-frequency radiation, the copper strip guides away surge current, and multiple shielding is carried out on cable transmission signals.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cable production, in particular to a PVC cable structure with anti-interference shielding and a production process. BACKGROUND

[0002] A cable is usually composed of several or several groups of twisted wires, each group of wires is insulated from each other, and is often twisted around a center, and the whole outside is covered with a highly insulated cover. The cable has the characteristics of internal power transmission and external insulation. Polyvinyl chloride, referred to as PVC, is a polymer formed by free radical polymerization of vinyl chloride monomer under the action of initiators such as peroxide and azo compound, or under the action of light and heat. It has good chemical corrosion resistance and good electrical insulation.

[0003] The patent with application number CN202210054824.1 discloses a high-resistance flame-retardant PVC cable production device and use method, which comprises an extrusion cylinder. The right end of the extrusion cylinder is an extrusion end and the right end of the extrusion cylinder is conical. The upper and lower ends of the extrusion cylinder are both connected with storage boxes. In the working process, the extrusion plate can change the speed of the wire conveying speed, and the extrusion plate determines the speed of the extrusion cylinder. When the wire conveying speed changes, the extruded insulation can still wrap the wire, avoiding the accumulation of insulation on the surface of the wire when the wire conveying speed changes, which can cause the wire to stretch and change in diameter, and may cause the wire to leak electricity, causing danger during use. The two storage boxes can work alternately and continuously, which is conducive to continuous and uninterrupted work.

[0004] The current scheme only wraps PVC polymer outside the wire for protection, but it is easy to be affected by electromagnetic interference during cable signal transmission, resulting in unstable signal transmission. When PVC is injected, the molten PVC polymer is pushed into the extrusion cylinder by the extrusion plate. The polymer is easy to solidify during slow pushing, and the extrudate is not evenly distributed, resulting in inconsistent hardness of the formed PVC polymer outer sheath.

[0005] In view of this, we propose a PVC cable structure with anti-interference shielding and a production process. SUMMARY

[0006] In order to overcome the defects in the prior art, the purpose of the present application is to provide a PVC cable structure with anti-interference shielding and a production process. By wrapping the aluminum-plastic composite film belt, the tinned copper mesh belt and the copper foil belt in sequence outside the inner protective layer of the wire to form a shielding layer, and stirring the PVC polymer while the shielding layer is wrapped during injection molding, and rotating the spiral blade to push the polymer to the extrusion port, the problems raised in the above background art are solved.

[0007] To achieve the above object, in one aspect, the present application provides the following technical solutions: A PVC cable production process with anti-interference shielding comprises the following steps: S1, a plurality of copper cores are twisted into a conductor wire, and a high-density high-temperature-resistant polyvinyl chloride material is wrapped outside the conductor wire by injection molding; S2, the conductor wire is sequentially threaded through a wrapping device, an injection molding device, and a cooling device, and then connected to a winding device, and an aluminum-plastic composite film reel, a tinned copper mesh reel, and a copper foil reel are respectively placed on corresponding mounting assemblies; S3, by rotating the threaded rod with the handle, the threaded block is driven to slide, so that the plurality of cross arms connected thereto are stretched, and the plurality of barrel blocks forming a barrel ring are expanded outward to fix the aluminum-plastic composite film reel, the tinned copper mesh reel, and the copper foil reel; S4, after the aluminum-plastic composite film, the tinned copper mesh, and the copper foil are threaded through the corresponding clamping assemblies, they are adhered to the surface of the conductor wire, the motor is started, and the rotating disc is driven to rotate by the first gear, as the conductor wire moves, the aluminum-plastic composite film, the tinned copper mesh, and the copper foil are sequentially wrapped around the conductor wire surface to form multiple shielding layers; S5, melt the weather-resistant polyvinyl chloride composite material into the injection molding box, as the rotating disc rotates, the spiral blade rotates accordingly, and the polyvinyl chloride in the injection molding box is extruded to tightly wrap the conductor wire, forming an outer protective layer; S6, start the water pump to draw external water source through the water pipe into a plurality of annular pipes connected to each other, and spray the conductor wire through the water jet head to cool it down.

[0008] The above arrangement takes into account that the conductor wire generates heat during transmission, and uses a high-density high-temperature-resistant polyvinyl chloride polymer as an inner protective layer to wrap the conductor wire for protection. During information transmission, the conductor wire is susceptible to external electromagnetic interference, which affects signal transmission. By wrapping the aluminum-plastic composite film, the tinned copper mesh, and the copper foil in sequence outside the inner protective layer, a shielding layer is formed. The aluminum-plastic film blocks low-frequency interference, the copper mesh absorbs high-frequency radiation, and the copper band leads away surge current, forming multiple shielding layers for the conductor wire transmission. A weather-resistant polyvinyl chloride polymer is used as an outer protective layer outside the shielding layer to provide external protection for the cable. After the outer protective layer is injection molded, it is quickly cooled by spraying water.

[0009] As a further improvement of the technical solution, the device for the process is prepared, which comprises a base, a wrapping device rotatably connected to the top end of the base for wrapping the shielding tape, an injection molding device mounted on the top end of the base for wrapping the outer protective layer, and a cooling device mounted on the top end of the base for cooling the wire after injection molding, the wire passes through the wrapping device, the injection molding device and the cooling device in turn, the wrapping device wraps the aluminum-plastic composite film tape, the tin-plated copper mesh tape and the copper foil tape on the wire in turn, and the injection molding device wraps the weather-resistant polyvinyl chloride composite on the outside of the wire; The wrapping device comprises a rotating disc rotatably connected to the top end of the base and three mounting assemblies and corresponding three clamping assemblies uniformly mounted on the side of the rotating disc; three aluminum-plastic composite film tape reels, tin-plated copper mesh tape reels and copper foil tape reels are respectively mounted on the three mounting assemblies, and a spiral blade is welded and fixed at the center of the back of the rotating disc; The mounting assembly comprises a horizontal column welded and fixed on the rotating disc, a threaded rod rotatably connected in the horizontal column, a threaded block screwedly connected on the threaded rod, a plurality of cylinder ring blocks slidably connected on the rotating disc to form a complete cylinder ring, and a plurality of cross arms hingedly connected between the cylinder ring blocks and the horizontal column, a plurality of the cylinder ring blocks expand outward with the cross arms to fix the reels with different hole diameters; The injection molding device comprises an injection molding box, a stirring shaft rotatably connected to the feeding port of the injection molding box, and a plurality of heating rods mounted on both sides of the discharge pipe of the injection molding box, and a protective box is welded and fixed outside the plurality of heating rods on both sides; The cooling device comprises a plurality of annular pipes connected to each other, a plurality of water spray heads mounted on the inner side of the annular pipe, and a water pump connected to the annular pipe through a water pipe.

[0010] The above setting considers that the aluminum-plastic composite film tape, the tin-plated copper mesh tape and the copper foil tape are wrapped on the outside of the wire in turn to form a shielding layer, the aluminum-plastic composite film tape reel, the tin-plated copper mesh tape reel and the copper foil tape reel are respectively mounted on the mounting assembly on the rotating disc, and the aluminum-plastic composite film tape, the tin-plated copper mesh tape and the copper foil tape are wrapped on the side wall of the wire after passing through the corresponding clamping assembly in turn, in the process of moving the wire, the rotating disc is rotated to drive the aluminum-plastic composite film tape, the tin-plated copper mesh tape and the copper foil tape to be wrapped on the outside of the wire in turn to form a shielding layer, the rotating disc drives the spiral blade to rotate in the injection molding box, pushes the PVC polymer to the extrusion port, and then the external water source is pumped into the annular pipe through the water pump and sprayed from the water spray head to the injected wire for rapid cooling; When installing the aluminum-plastic composite film tape reel, the tin-plated copper mesh tape reel and the copper foil tape, the center hole diameters of the reels are different, and the installation is not easy, the threaded rod is rotated to drive the threaded block to move, the cross arm is stretched, and the cylinder ring block is expanded outward until it abuts against the inner side wall of the reel to fix the reel.

[0011] As a further improvement of the technical solution, the clamping assembly comprises an outer support welded to the rotating disc and two clamping pieces oppositely arranged on the outer support, the clamping piece comprises a fixed frame slidingly connected to the inner side of the outer support, a roller rotatably connected to the fixed frame, a support rod hingedly connected to the two ends of the back of the fixed frame, a sliding rod welded to the outer support, a sliding block slidingly connected to the two ends of the sliding rod, and a spring sleeved on the sliding rod and arranged between the sliding block and the sliding rod, the end of the support rod away from the fixed frame is hingedly connected to the corresponding sliding block, the two rollers abut against each other, and the spring is in a compressed state.

[0012] This arrangement takes into account that the aluminum-plastic composite film belt, tin-plated copper mesh belt or copper foil belt is prone to wrinkling during movement with the wire, causing uneven wrapping. Before wrapping, it is passed between the two rollers, the spring extrudes the sliding block to slide along the sliding rod, the fixed frame is pushed to slide by the support rod, so that the two rollers clamp and fix the belt body.

[0013] As a further improvement of the technical solution, the outer edge of the rotating disc is welded with an outer ring gear, a pair of symmetrical first supports are welded to the top end of the base, and a first gear is rotatably connected to the first support.

[0014] This arrangement takes into account that the rotating disc needs to rotate during work, so as to wrap the aluminum-plastic composite film belt, tin-plated copper mesh belt or copper foil belt on the wire. Two symmetrical first gears are used to jointly support the rotating disc without affecting its rotation, and the first support is used to support the first gear.

[0015] As a further improvement of the technical solution, a fourth support is welded to the top surface of the base, and a motor is installed on the fourth support, and the output shaft of the motor is coaxially connected with one of the first gears.

[0016] This arrangement takes into account that the rotating disc needs to rotate for work, so the motor is started to drive one of the first gears to rotate, and the outer ring gear is engaged to drive the rotating disc to rotate.

[0017] As a further improvement of the technical solution, a plurality of stirring rods are welded to the side wall of the stirring shaft, a second gear is coaxially connected to the end of the stirring shaft protruding out of the side wall of the injection box, and the second gear is engaged with the outer ring gear.

[0018] This arrangement takes into account that the molten PVC polymer is prone to solidification. During the rotation of the rotating disc, the stirring shaft is driven to rotate by the gear engaged therewith, so that the stirring rods stir the material.

[0019] As a further improvement of the technical solution, the spiral blade extends into the injection box, and the spiral direction of the spiral blade is consistent with the moving direction of the wire, and the second support for fixing the injection box is welded and fixed on the top surface of the base.

[0020] This setting takes into account that in the injection box, the molten PVC polymer needs to be pushed to the extrusion port to complete the injection of the wire, the rotating disc drives the spiral blade to rotate, the spiral blade rotates, pushes the molten PVC polymer in the injection box to the extrusion port, extrudes the polymer, reduces the generation of bubbles, and makes the injection uniform.

[0021] As a further improvement of the technical solution, the horizontal column is provided with a sliding groove matched with the size of the threaded block, a handle is welded and fixed at one end of the threaded rod extending out of the horizontal column, and the two ends of the cross arm close to the barrel ring block are respectively hinged to the inner side wall thereof, and the two ends of the cross arm close to the horizontal column are hinged to the outer side wall of the horizontal column and the threaded block.

[0022] This setting takes into account that the specifications of the winding aluminum-plastic composite film belt, tinned copper mesh belt and copper foil belt are different, so the hole diameters of the winding shafts are different, the threaded rod is rotated by the handle, the threaded block is driven to slide along the sliding groove, so that the cross arm is extended, the barrel ring block is pushed to spread outward, and the inner side wall of the winding shaft is abutted and fixed.

[0023] As a further improvement of the technical solution, a group of third supports for fixing the cooling device are welded and fixed at the top end of the base, and the hole diameters of the water spray heads gradually increase along the moving direction of the wire.

[0024] This setting gradually increases the hole diameter of the water spray head, sprays water mist to preliminarily cool the wire after the injection is completed, and gradually increases the water mist and gradually cools as the wire moves.

[0025] On the other hand, the application also provides an anti-interference shielding PVC cable structure made by using the above-mentioned anti-interference shielding PVC cable production process, which comprises a wire twisted by a plurality of copper cores, an inner protective layer, a shielding layer and an outer protective layer arranged outside the wire in sequence, the inner protective layer is made of high-density high-temperature-resistant polyvinyl chloride, the shielding layer is composed of an aluminum-plastic composite film belt, a tinned copper mesh belt and a copper foil belt wound and wrapped in sequence, and the outer protective layer is made of weather-resistant polyvinyl chloride composite material.

[0026] Compared with the prior art, the application has the following advantages: 1. The PVC cable structure and production process of the anti-interference shield, by wrapping the aluminum-plastic composite film belt, the tinned copper mesh belt and the copper foil belt in sequence outside the outer sheath of the conductor to form a shielding layer, the aluminum-plastic film blocks low-frequency interference, the copper mesh absorbs high-frequency radiation, and the copper belt leads away the surge current, so that the signal transmission is stable and reliable.

[0027] 2. The PVC cable structure and production process of the anti-interference shield, by starting the motor, rotating the rotating disc through the first gear, wrapping the aluminum-plastic composite film belt, the tinned copper mesh belt and the copper foil belt in sequence outside the conductor, and rotating the stirring shaft through the second gear while the rotating disc is rotating, the stirring rod stirs the molten PVC polymer to prevent solidification, and the rotating disc drives the spiral blade to rotate to push the molten PVC polymer to the extrusion port, so that the injection is uniform.

[0028] 3. The PVC cable structure and production process of the anti-interference shield, by rotating the threaded rod, moving the threaded block, extending the cross arm, and pushing the cylinder ring block to spread outward until it abuts against the inner wall of the reel, so as to fix the aluminum-plastic composite film reel, the tinned copper mesh reel and the copper foil reel of different specifications. BRIEF DESCRIPTION OF DRAWINGS

[0029] The drawings described herein are for illustrative purposes only and are not intended to limit the scope of the present disclosure in any way. In addition, the shapes and proportions of the components in the drawings are only illustrative and are used to help understand the present invention, and are not specific limitations on the shapes and proportions of the components of the present invention. Those skilled in the art can select various possible shapes and proportions to implement the present invention according to specific circumstances under the guidance of the present invention.

[0030] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a sectional view of the overall structure of the present invention; Figure 3 is an exploded view of the overall structure of the present invention; Figure 4 is an exploded view of the wrapping device structure of the present invention; Figure 5 is a sectional view of the mounting assembly structure of the present invention; Figure 6 is an exploded view of the mounting assembly structure of the present invention; Figure 7 is a schematic diagram of the clamping assembly structure of the present invention; Figure 8 is a sectional view of the clamping assembly structure of the present invention; Figure 9 is an exploded view of the injection molding device structure of the present invention; Figure 10The cooling device structure schematic view of the present application; The meanings of various reference numerals in the drawings are as follows: 100, base; 110, first support; 120, second support; 130, third support; 140, fourth support; 200, wrapping device; 210, rotating disc; 211, outer ring tooth; 220, mounting assembly; 221, cross column; 2211, sliding groove; 222, threaded rod; 223, threaded block; 224, cross arm; 225, cylinder ring block; 230, clamping assembly; 231, outer support; 232, clamping piece; 2321, fixing frame; 2322, roller; 2323, support rod; 2324, sliding block; 2325, sliding rod; 2326, spring; 240, aluminum-plastic composite film tape reel; 250, tinned copper mesh tape reel; 260, copper foil tape reel; 270, spiral blade; 280, first gear; 290, motor; 300, injection molding device; 310, injection molding box; 320, stirring shaft; 321, stirring rod; 330, second gear; 340, protective box; 350, heating rod; 400, cooling device; 410, annular tube; 420, water spraying head; 430, water pump. DETAILED DESCRIPTION

[0031] The details of the present application can be more clearly understood with reference to the drawings and the description of specific embodiments of the present application. However, the specific embodiments of the present application described herein are for the purpose of explanation and illustration only, and should not be construed in any way as limiting the present application. Based on the teachings of the present application, those skilled in the art can conceive of any possible variations of the present application, which should be considered to fall within the scope of the present application. The terms "mounting", "connection" should be interpreted broadly, which can be direct connection or indirect connection through intermediate media.

[0032] The terms "central axis", "vertical", "horizontal", "front", "rear", "upper", "lower", "left", "right", "top", "bottom", "inner", "outer", etc. used herein indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the purpose of facilitating the description of the present application and simplifying the description, and does not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, in the description of the present application, the meaning of "several" is two or more, unless otherwise explicitly and specifically limited.

[0033] Please refer to Figures 1-10 The present application provides a technical solution, The PVC cable structure of anti-interference shielding comprises a conductor wire twisted by a plurality of copper cores, and an inner protective layer, a shielding layer and an outer protective layer arranged outside the conductor wire in sequence, wherein the inner protective layer is made of high-density heat-resistant PVC, the shielding layer is composed of an aluminum-plastic composite film belt, a tinned copper mesh belt and a copper foil belt wrapped in sequence, and the outer protective layer is made of weather-resistant PVC composite material.

[0034] The PVC cable production process of anti-interference shielding is used for preparing the PVC cable structure of anti-interference shielding, and comprises the following steps: S1, a plurality of copper cores are twisted into a conductor wire, and high-density heat-resistant PVC material is wrapped outside the conductor wire by injection molding; S2, the conductor wire is sequentially threaded through a wrapping device 200, an injection molding device 300 and a cooling device 400, and then connected to a winding device, and an aluminum-plastic composite film belt reel 240, a tinned copper mesh belt reel 250 and a copper foil belt reel 260 are respectively arranged on corresponding mounting assemblies 220; S3, by rotating the threaded rod 222 with the handle, the threaded block 223 is driven to slide, so that a plurality of cross arms 224 connected thereto are stretched, and a plurality of barrel blocks 225 capable of forming barrel rings are expanded outward to fix the aluminum-plastic composite film belt reel 240, the tinned copper mesh belt reel 250 and the copper foil belt reel 260; S4, the aluminum-plastic composite film belt, the tinned copper mesh belt and the copper foil belt are respectively threaded through corresponding clamping assemblies 230 and adhered to the surface of the conductor wire, and the motor 290 is started to drive the rotating disc 210 to rotate through the first gear 280, and as the conductor wire moves, the aluminum-plastic composite film belt, the tinned copper mesh belt and the copper foil belt are sequentially wrapped on the surface of the conductor wire to form multiple shielding layers; S5, melt the weather-resistant PVC composite material into the injection molding box 310, and as the rotating disc 210 rotates, the spiral blade 270 rotates accordingly, extruding the PVC in the injection molding box 310 to tightly wrap the conductor wire to form an outer protective layer; S6, start the water pump 430 to draw external water source through the water pipe into a plurality of annular pipes 410 connected to each other, and spray the conductor wire through the water spray head 420 to cool it down.

[0035] Heat is generated during the transmission of the conductor wire signal, so the inner protective layer is made of high-density heat-resistant PVC polymer. During the transmission of information, the signal transmission is unstable due to external electromagnetic interference. The shielding layer is formed by the aluminum-plastic composite film belt, the tinned copper mesh belt and the copper foil belt. The aluminum-plastic film blocks low-frequency interference, the copper mesh absorbs high-frequency radiation, and the copper belt leads away the surge current, forming multiple shielding layers for the transmission of the conductor wire. The outer protective layer is made of weather-resistant PVC polymer, which has good anti-ultraviolet, anti-aging and anti-chemical corrosion properties, and can ensure the long-term stable operation of the cable in outdoor, humid, corrosive and other harsh environments.

[0036] Referring to Figures 1-3 As shown in the figure, the device for the process is prepared, which includes a base 100, a wrapping device 200 rotatably connected to the top end of the base 100 for wrapping the shielding tape, an injection molding device 300 mounted on the top end of the base 100 for wrapping the outer protective layer, and a cooling device 400 mounted on the top end of the base 100 for cooling the wire after injection molding. The wire passes through the wrapping device 200, the injection molding device 300 and the cooling device 400 in turn. The wrapping device 200 wraps the aluminum-plastic composite film tape, the tin-plated copper mesh tape and the copper foil tape on the wire in turn. The injection molding device 300 wraps the weather-resistant polyvinyl chloride composite on the outside of the wire. Referring to Figure 4 As shown in the figure, the wrapping device 200 includes a rotating disc 210 rotatably connected to the top end of the base 100 and three mounting assemblies 220 and corresponding three clamping assemblies 230 uniformly mounted on the side of the rotating disc 210. The three mounting assemblies 220 respectively mount an aluminum-plastic composite film tape reel 240, a tin-plated copper mesh tape reel 250 and a copper foil tape reel 260. A spiral blade 270 is welded and fixed at the center of the back of the rotating disc 210. Considering that the aluminum-plastic composite film tape, the tin-plated copper mesh tape and the copper foil tape are wrapped on the outside of the wire in turn, the rotating disc 210 is rotated to drive the aluminum-plastic composite film tape reel 240, the tin-plated copper mesh tape reel 250 and the copper foil tape reel 260 to wrap and wrap. Referring to Figure 5 and Figure 6 As shown in the figure, the mounting assembly 220 includes a cross column 221 welded and fixed on the rotating disc 210, a threaded rod 222 rotatably connected in the cross column 221, a threaded block 223 threadedly connected to the threaded rod 222, a plurality of cylinder ring blocks 225 slidably connected to the rotating disc 210 to form a complete cylinder ring, and a plurality of cross arms 224 hingedly connected between the cylinder ring blocks 225 and the cross column 221. A plurality of cylinder ring blocks 225 expand outwardly with the extension of the cross arm 224 to fix the reels of different diameters. The rotation of the threaded rod 222 drives the threaded block 223 to move, so that the cross arm 224 expands, pushes the cylinder ring block 225 to move outwardly and spreads until it abuts against the inner wall of the reel to fix it. Referring to Figure 9 As shown in the figure, the injection molding device 300 includes an injection molding box 310, a stirring shaft 320 rotatably connected to the feeding port of the injection molding box 310, and a plurality of heating rods 350 mounted on both sides of the discharge pipe of the injection molding box 310. A plurality of heating rods 350 are welded and fixed with protective boxes 340 on the outside. The rotation of the stirring shaft 320 stirs the molten polymer, and the heating rods 350 heat and keep the polymer warm to prevent it from solidifying. Referring to Figure 10As shown in the figure, the cooling device 400 comprises a plurality of annular pipes 410 connected with each other, a plurality of water spraying heads 420 installed on the inner side of the annular pipes 410, and a water pump 430 connected with the annular pipes 410 through a water pipe; the water pump 430 draws external water into the annular pipes 410 and then sprays the water out from the water spraying heads 420 to cool the lead wire after injection molding.

[0037] Further, refer to Figure 3 and Figure 4 As shown in the figure, the outer edge of the rotating disc 210 is welded and fixed with an outer ring tooth 211, the top end of the base 100 is welded and fixed with a pair of symmetrical first supports 110, the first supports 110 are rotationally connected with first gears 280, the first gears 280 are engaged with the outer ring tooth 211, and the rotating disc 210 needs to rotate during work, and the symmetrical two first gears 280 lift the rotating disc 210 without affecting the rotation.

[0038] Specifically, refer to Figure 3 and Figure 4 As shown in the figure, the top surface of the base 100 is welded and fixed with a fourth support 140, the fourth support 140 is installed with a motor 290, the output shaft of the motor 290 is coaxially connected with one of the first gears 280, the rotating disc 210 needs to rotate during work, the motor 290 drives the first gear 280 to rotate, and then drives the rotating disc 210 to rotate.

[0039] In addition, refer to Figure 7 and Figure 8 As shown in the figure, the clamping assembly 230 comprises an outer support 231 welded and fixed on the rotating disc 210 and two clamping pieces 232 oppositely arranged and installed on the outer support 231, the clamping piece 232 comprises a fixed frame 2321 slidably connected on the inner side of the outer support 231, a roller 2322 rotationally connected on the fixed frame 2321, a support rod 2323 hingedly connected on the back of the fixed frame 2321, a sliding rod 2325 welded and fixed on the outer support 231, a sliding block 2324 slidably connected on both ends of the sliding rod 2325, and a spring 2326 sleeved on the sliding rod 2325 and arranged between the sliding block 2324 and the middle block of the sliding rod 2325, one end of the support rod 2323 away from the fixed frame 2321 is hingedly connected with the corresponding sliding block 2324, the two rollers 2322 abut against each other, and the spring 2326 is in a compressed state; considering that the aluminum-plastic composite film belt, tinned copper mesh belt or copper foil belt is prone to wrinkling during wrapping, causing uneven wrapping, the belt body is caused to pass between the two rollers 2322 before wrapping, the spring 2326 pushes the sliding block 2324 to slide along the sliding rod 2325, the fixed frame 2321 is pushed to slide through the hingedly connected support rod 2323, the two rollers 2322 are moved towards each other, the belt body is clamped, and wrinkling during wrapping is avoided.

[0040] Further, refer to Figure 2And Figure 10 As shown in the figure, the top end of the base 100 is welded and fixed with a set of third supports 130 for fixing the cooling device 400, and the aperture of the water jet head 420 gradually increases along the moving direction of the wire. Considering that when cooling the wire after injection molding, the diameter of the water flow is greatly impacted to avoid the destruction of the PVC polymer structure under rapid cooling, which affects the strength of the outer protective layer, so the aperture of the water jet head 420 gradually increases to gradually cool.

[0041] Specifically, please refer to Figure 2 And Figure 9 As shown in the figure, a plurality of stirring rods 321 are welded and fixed on the side wall of the stirring shaft 320, and a second gear 330 is coaxially connected to the end of the stirring shaft 320 extending out of the side wall of the injection box 310. The second gear 330 is engaged with the outer ring teeth 211. During the rotation of the rotating disc 210, the second gear 330 engaged with the stirring shaft 320 is driven to rotate, and the stirring rod 321 stirs the molten material to avoid solidification.

[0042] It is worth noting that, please refer to Figure 2 And Figure 3 As shown in the figure, the spiral blade 270 extends into the injection box 310, and the spiral direction of the spiral blade 270 is consistent with the moving direction of the wire. The top surface of the base 100 is welded and fixed with a second support 120 for fixing the injection box 310. The rotating disc 210 rotates to drive the spiral blade 270 to rotate, and the spiral blade 270 rotates to push the molten material to move towards the extrusion outlet, so that the injection is uniform.

[0043] Further, please refer to Figure 6 As shown in the figure, a sliding groove 2211 is formed in the cross column 221 and is adapted in size to the threaded block 223. One end of the threaded rod 222 extends out of the cross column 221 and is welded and fixed with a handle. The two ends of the cross arm 224 close to the barrel ring block 225 are respectively hinged to the inner side wall thereof. The two ends of the cross arm 224 close to the cross column 221 are hinged to the outer side wall of the cross column 221 and the threaded block 223 respectively. By rotating the threaded rod 222 through the handle, the threaded block 223 is driven to move along the sliding groove 2211, and the hinged cross arm 224 is driven to stretch, thereby pushing the barrel ring block 225 to diffuse and slide.

[0044] It should be noted that the above embodiments are only for illustrating the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and to implement it, and cannot limit the protection scope of the present application. Any equivalent changes or modifications made in accordance with the spirit and essence of the present application shall be covered within the protection scope of the present application.

Claims

1. A production process for anti-interference shielded PVC cables, characterized in that: The following steps are involved: S1, using multiple copper cores twisted into a conductor, and wrapping the high-density, high-temperature resistant polyvinyl chloride material on the outside of the conductor by injection molding; S2. Pass the above-mentioned wires through the wrapping device, injection molding device and cooling device in sequence, and then connect to the winding device, and place the aluminum-plastic composite film tape reel, tinned copper mesh tape reel and copper foil tape reel on the corresponding installation components respectively; S3. Rotating the threaded rod by a handle drives the threaded block to slide, thereby extending a plurality of cross arms hinged thereto, pushing a plurality of cylindrical ring blocks that can form a cylindrical ring to expand outward, thereby fixing the aluminum-plastic composite film strip reel, the tinned copper mesh strip reel, and the copper foil strip reel; S4. Pass the aluminum-plastic composite film tape, the tinned copper mesh tape, and the copper foil tape through corresponding clamping assemblies and adhere them to the surface of the conductor. Start the motor, and drive the rotating disk to rotate via the first gear. As the conductor moves, the aluminum-plastic composite film tape, the tinned copper mesh tape, and the copper foil tape are sequentially wrapped around the surface of the conductor to form a multi-shield. S5. Inject the molten weather-resistant polyvinyl chloride composite material into the injection molding box. As the rotating disk rotates, the spiral blades rotate accordingly, squeezing the polyvinyl chloride in the injection molding box so that it tightly wraps the wire to form an outer layer of protection; S6. Start the water pump to draw water from the external source and introduce it into several interconnected annular pipes through the water pipe, and then spray it onto the wires through the sprinkler head to cool them down.

2. The process for producing an anti-interference shielded PVC cable according to claim 1 is prepared using equipment used for the process, the equipment comprising a base, a wrapping device rotatably connected to the top of the base for wrapping the shielding tape, an injection molding device installed at the top of the base for wrapping the outer sheath, and a cooling device installed at the top of the base for cooling the wire after injection molding, characterized in that: The conductor passes through a wrapping device, an injection molding device, and a cooling device in sequence. The wrapping device wraps an aluminum-plastic composite film strip, a tinned copper mesh strip, and a copper foil strip on the conductor in sequence. The injection molding device wraps a weather-resistant polyvinyl chloride compound on the outside of the conductor. The wrapping device includes a rotating disk rotatably connected to the top of the base, and three mounting components and corresponding three clamping components evenly mounted on the side of the rotating disk; the three mounting components are respectively mounted with an aluminum-plastic composite film tape reel, a tinned copper mesh tape reel, and a copper foil tape reel, and a spiral blade is welded and fixed at the center of the back of the rotating disk; The mounting assembly includes a cross post welded to the rotating disk, a threaded rod rotatably connected to the cross post, a threaded block threadedly connected to the threaded rod, a plurality of barrel ring blocks slidably connected to the rotating disk to form a complete barrel ring, and a plurality of cross arms hinged between the barrel ring blocks and the cross post. The barrel ring blocks extend outwards as the cross arms extend to fix reels of different apertures. The injection molding device includes an injection molding box, a stirring shaft rotatably connected to the feed port of the injection molding box, and a plurality of heating rods installed on both sides of the discharge pipe of the injection molding box, and protective boxes are welded and fixed to the outer sides of the plurality of heating rods on both sides; The cooling device comprises a plurality of annular pipes connected to each other, a plurality of water spray heads installed on the inner sides of the annular pipes, and a water pump connected to the annular pipes through a water pipe.

3. The anti-interference shielded PVC cable production process according to claim 2, characterized in that: The cam is secured to the chassis and has two opposite ends, each of which is adapted to engage the driver and engage with the driver, and the two guide rails are secured to the chassis and are easily adjustable.

4. The anti-interference shielded PVC cable production process according to claim 3, characterized in that: An outer ring gear is welded and fixed to the outer edge of the rotating disk, and a pair of symmetrical first brackets are welded and fixed to the top of the base. The first brackets are rotatably connected to a first gear, and the first gear is meshed with the outer ring gear.

5. The anti-interference shielded PVC cable production process according to claim 4, characterized in that: A fourth bracket is welded and fixed to the top surface of the base, a motor is mounted on the fourth bracket, and an output shaft of the motor is coaxially connected to one of the first gears.

6. The production process of the anti-interference shielded PVC cable according to claim 5, characterized in that: A plurality of stirring rods are welded and fixed on the side wall of the stirring shaft. One end of the stirring shaft extends out of the side wall of the injection molding box and is coaxially connected to a second gear, and the second gear is meshed with the outer ring gear.

7. The process for producing an anti-interference shielded PVC cable according to claim 6, characterized in that: The spiral blade extends into the injection molding box, and the spiral direction of the spiral blade is consistent with the moving direction of the wire. A second bracket for fixing the injection molding box is welded and fixed on the top surface of the base.

8. The process for producing an anti-interference shielded PVC cable according to claim 7, characterized in that: The cross column is provided with a sliding groove adapted to the size of the threaded block, and one end of the threaded rod is extended out of the cross column and fixed with a handle by welding. The two ends of the cross arm close to the cylinder ring block are respectively hinged to its inner wall. The cross arm is close to the two ends of the cross column, one end of which is hinged to the outer wall of the cross column, and the other end is hinged to the threaded block.

9. The process for producing an anti-interference shielded PVC cable according to claim 8, characterized in that: A group of third brackets for fixing the cooling device is welded and fixed on the top of the base, and the apertures of the plurality of water spray heads gradually increase along the moving direction of the wire.

10. An anti-interference shielded PVC cable structure, manufactured using the anti-interference shielded PVC cable production process according to claim 9, characterized in that: It includes a conductor composed of several copper cores twisted together, and the outer side of the conductor is sequentially provided with an inner protective layer, a shielding layer and an outer protective layer. The inner protective layer is made of high-density, high-temperature resistant polyvinyl chloride, the shielding layer is composed of an aluminum-plastic composite film tape, a tinned copper mesh tape and a copper foil tape wrapped in sequence, and the outer protective layer is made of a weather-resistant polyvinyl chloride composite material.

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