A composite three-layer insulation cable and processing technology

Abstract

The present invention relates to the field of cable technology, and in particular to a composite three-layer insulated cable and processing technology, comprising the following steps: through wire drawing, annealing, tinning, twisting, inner insulation layer extrusion, stranding, insulation jacket extrusion, cooling and dehydration, a cable with a shielding layer, a fire-resistant layer, a corrosion-resistant layer and a second insulation layer is obtained, and the three protective layers can be formed at one time through a unique extrusion device, thereby improving production efficiency. The present invention combines materials with different properties through a unique structural design and advanced processing technology to form a three-layer insulation protection structure, thereby improving the insulation, heat resistance and corrosion resistance of the cable, and facilitating adaptation to different working environments.

Description

Technical Field

[0001] The invention relates to the technical field of cables, and in particular to a composite three-layer insulation cable and a processing technology. Background Art

[0002] With the rapid development of the communication industry, from the simple telephone and telegraph cables in the past to thousands of pairs of telephone cables, coaxial cables, optical cables, data cables, and even combined communication cables, etc. Cables are generally composed of conductors, protective layers and insulating layers. During the processing, the copper rods need to be drawn, tinned, twisted, shielded and the insulating protective layer extruded to form high-quality finished cables.

[0003] In the field of modern electrical engineering, the performance requirements for cables are increasing day by day. Traditional cables are gradually showing their shortcomings in some specific scenarios. On the one hand, ordinary cables have a single performance in high-voltage electrical environments and have certain limitations. They are prone to safety hazards such as leakage, which not only affects equipment operation, but may also cause damage to personnel and equipment. On the other hand, with industrial production and people's requirements for power supply reliability, the heat resistance and corrosion resistance of cables are gradually becoming key factors. Especially in construction sites, due to the poor environment, cables are often in contact with water stains. The waterproofness, corrosion resistance and high temperature resistance of ordinary cables cannot meet the requirements, and they are prone to aging and damage, which increases maintenance costs and replacement frequency.

[0004] In order to solve these problems, we have studied a composite three-layer insulated cable. This cable combines insulating materials with different performances through a unique structural design and advanced processing technology to form a three-layer insulation structure, thereby improving the cable's insulation, heat resistance and corrosion resistance. It can better adapt to various complex electrical application environments and provide reliable protection for the development of modern electrical engineering. Summary of the invention

[0005] In response to the technical problems existing in the background technology, the present invention provides a composite three-layer insulated cable and a processing technology. Through a unique structural design and advanced processing technology, materials with different properties are combined together to form a three-layer insulating protection structure, thereby improving the insulation, heat resistance and corrosion resistance of the cable, making it easier to adapt to different working environments.

[0006] The technical implementation scheme of the present invention is:

[0007] A composite three-layer insulated cable comprises a cable core, a filling layer, a shielding layer, a fire-resistant layer, a corrosion-resistant layer and a second insulating layer. The filling layer is arranged outside the cable core, and the shielding layer is arranged on the outer wall of the filling layer to form an electromagnetic shielding structure; the fire-resistant layer, the corrosion-resistant layer and the second insulating layer are arranged in sequence outside the shielding layer to form a three-layer protection structure; the first insulating layer is arranged outside the cable core to form an insulating protection structure.

[0008] A composite three-layer insulation cable processing technology comprises the following steps:

[0009] S1. Wire drawing: The copper rod or aluminum rod is drawn through a wire drawing machine for multiple times to form a wire of the required diameter;

[0010] S2, Annealing: Annealing the wire after drawing to reduce its hardness and improve its flexibility;

[0011] S3, tinning: tinning the wire after annealing and cooling to prevent oxidation of the wire;

[0012] S4, twisting: twisting multiple conductors into a cable core to improve the flexibility and strength of the cable;

[0013] S5. Inner insulation layer extrusion: Extrude a layer of insulation material outside the cable core to form an insulated wire core with an insulating protective layer structure to ensure the insulation performance of the cable;

[0014] S6, stranded wire: twist multiple insulated wire cores into a wire, and add filler to ensure the stability of the stranded wire;

[0015] S7, insulation jacket extrusion: through the insulation layer extrusion device, three layers of sheath insulation material are extruded on the outside of the stranded wire at the same time to form a three-layer insulation protection structure to protect the cable from the influence of the external environment;

[0016] S8, cooling: subjecting the molded cable in step S7 to water cooling to facilitate rapid cooling of the extruded insulation layer;

[0017] S9. Water removal: After water cooling, the cable passes through the water removal equipment to remove water stains on the surface, and then is packaged and rolled.

[0018] Optionally, in the S4 twisting step, 20-30 wires are twisted by a twisting device, and the obtained strands are wound up by a winding device, and then introduced into an insulation layer extrusion device for insulation extrusion processing; in the S7 step, the insulation layer extrusion device includes an extrusion head, a first introduction part, a second introduction part and a third introduction part, the extruder head is respectively connected to the first introduction part, the second introduction part and the third introduction part, and different coating materials are introduced into the extruder head; the extruder head includes an inner mold liner, a middle mold liner, a mold core and a mold sleeve, the mold core is sequentially provided with an inner mold liner and a middle mold liner to form a first mold structure, the outside of the middle mold liner is provided with an outer shell, one end of the outer shell is connected to the mold sleeve to form a second mold structure; the outer shell is provided with a first feed port and a second feed port, the first feed port is connected to the first introduction part for introducing a first layer of coating material, and the second feed port is connected to the second introduction part for introducing a second layer of coating material; the third feed port on the mold sleeve is connected to the third introduction part for introducing a third layer of coating material.

[0019] Optionally, the inner mold liner is a conical rotating body structure, and a first guide groove is arranged on the outer wall of the inner mold liner, one end of the first guide groove is connected to the first coating chamber, and the other end of the first guide groove is connected to the first feed port; a second guide groove is arranged on the outer wall of the middle mold liner, one end of the second guide groove is connected to the second coating chamber, and the other end of the second guide groove is connected to the second feed port; the interior of the mold sleeve is a conical cavity structure, and a third coating chamber is formed between the mold sleeve and the middle mold liner for collecting three layers of coating materials, and the third feed port on the upper part of the mold sleeve is connected to the third coating chamber.

[0020] Optionally, the first introduction part includes a material guiding group and a smelting group, the material outlet of the material guiding group is connected with the material feed port of the smelting group, and the material is introduced into the interior of the smelting group; the material guiding group includes a first fixed bracket, a first material guiding box, a driving box, a first spiral material guiding rod and a first material guiding pipe, the first material guiding box is arranged on the upper part of the first fixed bracket, and the first material guiding box is provided with a first material guiding pipe inside, and a plurality of connecting rings are provided on the outer wall of the first material guiding pipe; the first spiral material guiding rod is arranged inside the first material guiding pipe, and one end of the first spiral material guiding rod is connected to the driving box through a coupling.

[0021] Optionally, a plurality of feed troughs are provided on the first material guiding box, and the feed pipes at the lower parts of the feed troughs are communicated with the inner cavity of the first material guiding pipe; and the discharge port of the first material guiding box is connected with the smelting group.

[0022] Optionally, the smelting group includes a second fixed support, a smelting box, a smelting tube, a first heater and a second heater, the smelting box is arranged on the upper part of the second fixed support, and the smelting tube, the first heater and the second heater are arranged inside the smelting box; a plurality of first heaters are arranged on the upper part of the smelting tube, and the first heater is connected to the heating box at the bottom of the second fixed support through a fourth air duct; the second heater is arranged on the smelting tube, and the second heater is connected to the gas outlet end of the first air duct through the second air duct and the air pump.

[0023] Optionally, the first heater is a rectangular hollow structure with an opening in the middle, and a first air inlet and a first air outlet are provided on the first heater, the first air inlet is connected to the fourth air duct, and the first air outlet is connected to the first air duct through a third pipe passing through a connecting hole on the smelting box; the first air duct is fixedly arranged on the upper part of the smelting box by a fixer.

[0024] Optionally, a second spiral guide rod is provided inside the smelting tube, and the second spiral guide rod is connected to the second drive motor through a connecting piece; the second heater is a cylindrical hollow cavity structure with openings at both ends, and a cavity interlayer is provided inside the second heater, and a guide groove structure is formed inside the cavity interlayer by a plurality of guide plates; a second air inlet and a second air outlet are provided on the second heater, the second air inlet is connected to the second air guide pipe, and the second air outlet is connected to the air outlet pipe; a support plate is provided at the bottom of the smelting box, and the support plate is connected to the second fixed bracket, and a plurality of connecting grooves are provided on the support plate; a driving wheel connected to the output shaft of the first drive motor and a driven wheel connected to the first spiral guide rod are provided inside the drive box, the driving wheel is meshed with the driven wheel, and a sealing shell is provided at one end of the drive box.

[0025] Optionally, the cooling part includes a third fixed bracket, a water guide groove, an atomizing cooling mechanism, a first dewatering mechanism and a second dewatering mechanism. The upper part of the third fixed bracket is provided with the atomizing cooling mechanism, and the output end of the atomizing cooling mechanism is connected through the first dewatering mechanism and the second dewatering mechanism; the atomizing cooling mechanism includes an atomizing cooling box, a cooling pipe, a first guide pump and a feeding mechanism. The atomizing cooling box is a rectangular hollow cavity structure with openings at both ends. A first feeder for guiding wires is provided at the opening of the atomizing cooling box. A plurality of atomizers are provided inside the atomizing cooling box, and the atomizers are connected to the water tank through the first guide pump and the first water guide pipe; the cooling pipe is covered on the atomizing cooling box, and a wire passing mechanism for guiding the stranded wire is provided at the inlet of the cooling pipe. A water inlet pipe and a water outlet pipe are provided on the cooling pipe, the water inlet pipe is connected to an external water source, and the water outlet pipe is connected to the water guide groove at one end of the third fixed bracket; the water guide groove is provided on one side of the water collecting tank, and the water guide groove is connected to the water collecting tank through the guide hole.

[0026] Optionally, the first water removal mechanism includes a water removal box, an air guide groove, a second feeder and a first ventilation pipe, a plurality of first ventilation pipes are arranged inside the water removal box, the upper part of the first ventilation pipe is connected to the air guide groove, and the lower part of the first ventilation pipe is connected to the water guide groove through the second air guide pipe; the air guide groove is arranged at the upper part of the water removal box, and a plurality of first blowers are arranged on the air guide groove to ventilate the first ventilation pipe, second feeders are arranged on both sides of the water removal box, and a plurality of first blowers are arranged on the first ventilation pipe corresponding to the feeding port of the second feeder A second wire through hole is provided; the second water removal mechanism includes a drying box, a third feeder, a flow guide and a third air outlet. The drying box is a cylindrical hollow cavity structure with openings at both ends. The upper part of the drying box is provided with a third air inlet, and the lower part is provided with a third air outlet. A second blower is provided inside the third air inlet, and the third air outlet is connected to the water guide groove through a third air guide pipe; both ends of the drying box are provided with a third feeder for guiding the wire, and the interior of the drying box is symmetrically provided with flow guides, and the flow guides are located on both sides of the third air inlet;

[0027] The wiping group also includes a wiping group, which includes a carrier bracket, an upper wiping group and a lower wiping group. The upper wiping group and the lower wiping group are symmetrically arranged inside the carrier bracket. The upper wiping group includes a connecting rod, a pressure spring, a wiping plate and a wiping cotton. The wiping plate is connected to the through hole on the carrier bracket through the connecting rod, and a positioning ring is provided on the connecting rod for fixing and limiting. A pressure spring is provided on the outer wall of the connecting rod to form an elastic structure. Wiping cotton is provided at the lower part of the wiping plate. A reflux groove is provided on one side of the water guide groove, and the reflux groove is connected to the water collecting groove at the bottom of the third fixed bracket through the second guide pump and the second water guide pipe. The wire passing mechanism includes a connecting support, a first wire pulley and a second wire pulley. The connecting support is arranged at the inlet of the cooling pipe. The connecting support is provided with a first wire passing through hole, and the first wire pulley and the second wire pulley are provided on the fixing ears on both sides of the first wire passing through hole.

[0028] The present invention has the following advantages:

[0029] 1. The present invention is designed with an independent extruder head, which is respectively connected with the first introduction part, the second introduction part and the third introduction part, and the three coating materials are introduced after being heated. The whole extruder head is divided into two parts, the first mold and the second mold. The first mold includes an inner mold liner, a middle mold liner and a mold core. The outer wall of the inner mold liner is provided with a first guide groove, which can guide the first layer of coating material into the first coating groove. The outer wall of the middle mold liner is also provided with a second guide groove, which can guide the second layer of coating material into the second coating groove and evenly lay it on the upper part of the first layer of coating material; the second mold includes a mold sleeve, and the mold sleeve is provided with a third feed port, which is used to introduce the third layer of coating material, and then enter the third coating groove, so as to realize three-layer simultaneous coating during the stranded wire traction process.

[0030] 2. In the present invention, the first introduction part includes a material guiding group and a smelting group, wherein the material guiding group can guide the material into the smelting group through the first spiral material guiding rod and the first material guiding tube inside, realize automatic material guiding under the drive of the driving box, and cooperate with the smelting group to melt the material into a coating material.

[0031] 3. The present invention is provided with a smelting group for melting the introduced materials, wherein a two-stage smelting method is adopted inside the smelting tube, wherein the hot air generated by the heating box is first introduced into the first heater through the fourth air guide pipe to realize the first heating and smelting, and the hot air guided out of the first heater is introduced into the air guide pump through the first air guide pipe, and enters the second heater through the air guide pump, and the guide part of the smelting tube is heated again to effectively prevent the material from condensing.

[0032] 4. The present invention is provided with an independent cooling unit for cooling the cable after coating, wherein the first water cooling is completed by a cooling pipe, and the second cooling is completed by an atomizing cooling mechanism, and the side of the atomizing cooling mechanism is provided with a first water removal mechanism and a second water removal mechanism to automatically remove water stains attached to the cable surface after cooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a structural schematic diagram of the present invention.

[0034] Figure 2 It is a top view of the present invention.

[0035] Figure 3 It is a schematic diagram of the internal structure of the extruder head of the present invention.

[0036] Figure 4 It is a schematic diagram of the three-dimensional structure of the extruder head of the present invention.

[0037] Figure 5 It is a schematic diagram of the explosion structure of the extruder head of the present invention.

[0038] Figure 6 It is a schematic structural diagram of the first guide groove of the present invention.

[0039] Figure 7 It is a schematic structural diagram of the second guide groove of the present invention.

[0040] Figure 8 It is a schematic diagram of the structure of the connection between the material guiding group and the smelting group of the present invention.

[0041] Fig. 9 It is a schematic diagram of the structure of the smelting group of the present invention.

[0042] Fig.10 It is a schematic diagram of the internal structure of the smelting box of the present invention.

[0043] Fig.11 It is a schematic diagram of the structure of the connection of the second spiral guide rod of the present invention.

[0044] Fig.12 It is a structural schematic diagram of the material guiding group of the present invention.

[0045] Fig.13 It is a schematic structural diagram of the cooling unit of the present invention.

[0046] Fig.14 It is a schematic structural diagram of the connection between the atomizing cooling mechanism and the first water removal mechanism of the present invention.

[0047] Fig.15 It is a schematic diagram of the structure of the water guide groove connection of the present invention.

[0048] Fig.16It is a structural schematic diagram of the atomization cooling mechanism of the present invention.

[0049] Fig.17 It is a structural schematic diagram of the first water removal mechanism of the present invention.

[0050] Fig.18 It is a cross-sectional view of a water removal tank according to the present invention.

[0051] Fig.19 It is a structural schematic diagram of the second water removal mechanism of the present invention.

[0052] Fig. 20 It is a cross-sectional view of the drying box of the present invention.

[0053] Fig.21 It is a schematic structural diagram of the wiping group of the present invention.

[0054] Fig. 22 It is a schematic diagram of the structure of the cable of the present invention.

[0055] The meaning of the reference numerals in the figure: 1-extruder head, 101-inner mold liner, 102-mold sleeve, 103-middle mold liner, 104-housing, 105-first feed port, 106-first guide groove, 107-second feed port, 108-second guide groove, 109-second coating chamber, 110-third feed port, 111-third coating chamber, 112-first coating chamber, 113-core, 2-first introduction part, 3-second introduction part, 4-third introduction part, 5-cooling part, 501-third fixed bracket, 502-second air duct, 503-third air duct, 504-water guide groove, 505-reflux trough, 506-second guide pump, 507-second water guide pipe, 508-connecting support, 509-first wire wheel, 510-second wire wheel, 6-smelting group, 601-second fixed support, 603-fourth air guide pipe, 604-smelting box, 605-connecting hole, 606-first air guide pipe, 607-fixer, 608-second drive motor, 609-air pump, 610-second air guide pipe, 611-smelting pipe, 612-first heater, 613-second heater, 614-second air inlet, 615-second air outlet, 616-support plate, 617-connecting trough, 618-guide plate, 61 9-second spiral guide rod, 7-guide group, 701-first fixed bracket, 702-first guide box, 703-drive box, 704-seal shell, 705-driven wheel, 706-driving wheel, 707-first drive motor, 708-first guide pipe, 709-connecting ring, 710-first spiral guide rod, 711-feeding trough, 801-carrying bracket, 802-connecting rod, 803-pressure spring, 804-wiping plate, 805-wiping cotton, 9-atomizing cooling mechanism, 901-atomizing cooling box, 902-first guide pump, 903-cooling pipeline, 904-water inlet pipe, 905-first feeder , 906-first water pipe, 907-water collecting trough, 908-water outlet pipe, 10-first water removal mechanism, 1001-water removal box, 1002-second feeder, 1003-air guide groove, 1004-first blower, 1005-first ventilation duct, 1006-second wire through hole, 11-second water removal mechanism, 1101-drying box, 1102-third feeder, 1103-third air inlet, 1104-third air outlet, 1105-flow guide, 12-first insulating layer, 13-cable core, 14-filling layer, 15-shielding layer, 16-fire-resistant layer, 17-corrosion-resistant layer, 18-second insulating layer. DETAILED DESCRIPTION

[0056] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings. It is hereby stated that the directional terms such as up, down, left, right, front, back, inside, outside, etc. that appear or will appear in the text of the present invention are only based on the accompanying drawings of the present invention, and are not specific limitations of the present invention.

[0057] like Fig. 22 As shown, a composite three-layer insulated cable includes a cable core 13, a filling layer 14, a shielding layer 15, a fire-resistant layer 16, a corrosion-resistant layer 17 and a second insulating layer 18. The filling layer 14 is arranged outside the cable core 13, and the shielding layer 15 is arranged on the outer wall of the filling layer 14 to form an electromagnetic shielding structure; the fire-resistant layer 16, the corrosion-resistant layer 17 and the second insulating layer 18 are arranged outside the shielding layer 15 in sequence to form a three-layer protection structure; the first insulating layer 12 is arranged outside the cable core 13 to form an insulating protection structure.

[0058] It should be noted that cable, as one of the commonly used electrical equipment in production and life, has the function of efficiently transmitting electric energy. Insulated cables can not only transmit electricity safely and stably in different environments, but also transmit electricity to the destination with low loss, whether from power plants to substations or from substations to various electricity users. Insulated cables can be laid in various environments such as underground, underwater, and overhead for use, to achieve long-distance transmission of electricity. However, due to changes in various environments, cable performance has also changed. Existing cables cannot meet the requirements at this stage. Based on this, we have developed a three-layer insulated cable. A fire-resistant layer 16, a corrosion-resistant layer 17 and a second insulating layer 18 are designed in sequence on the upper part of the cable filling layer 14 to form a protective structure, which can greatly improve the protective performance of the cable and facilitate its use in different places.

[0059] A composite three-layer insulation cable processing technology comprises the following steps:

[0060] S1. Wire drawing: The copper rod or aluminum rod is drawn through a wire drawing machine for multiple times to form a wire of the required diameter;

[0061] S2, Annealing: Annealing the wire after drawing to reduce its hardness and improve its flexibility;

[0062] S3, tinning: tinning the wire after annealing and cooling to prevent oxidation of the wire;

[0063] S4, twisting: twisting multiple conductors into a cable core to improve the flexibility and strength of the cable;

[0064] S5. Inner insulation layer extrusion: Extrude a layer of insulation material outside the cable core to form an insulated wire core with an insulating protective layer structure to ensure the insulation performance of the cable;

[0065] S6, stranded wire: twist multiple insulated wire cores into a wire, and add filler to ensure the stability of the stranded wire;

[0066] S7, insulation jacket extrusion: through the insulation layer extrusion device, three layers of sheath insulation material are extruded on the outside of the stranded wire at the same time to form a three-layer insulation layer structure to protect the cable from the influence of the external environment;

[0067] S8, cooling: subjecting the molded cable in step S7 to water cooling to facilitate rapid cooling of the extruded insulation layer;

[0068] S9. Water removal: After water cooling, the cable passes through the water removal equipment to remove water stains on the surface, and then is packaged and rolled.

[0069] It should be noted that in order to prepare three-layer insulated cables, we use the steps of wire drawing, annealing, tinning, twisting, inner insulation layer extrusion, stranding, insulation jacket extrusion, cooling, dehydration and winding to produce the insulated cables. During the extrusion of the insulation jacket, the fire-resistant layer 16, the corrosion-resistant layer 17 and the second insulation layer 18 need to be extruded at the same time, and integrally formed in the extruder and attached to the outside of the stranded wire. The advantage of this one-piece extrusion method is that the extrusion process can be completed in one go, and only one cooling is required, which can improve production efficiency.

[0070] It should be further explained that after the insulation jacket is extruded, the outside of the cable will have a large amount of heat, which is not conducive to the subsequent winding. Therefore, we have designed two processes, cooling and dehydration. The cable surface is cooled by the cooling part 5, and the water stains remaining on the cable surface are removed by the dehydration process to facilitate the winding and packaging process.

[0071] like Figure 1-Figure 7As shown, in the S4 twisting step, 26 wires are twisted by a twisting device, and the obtained twisted wires are rolled up with a winding device, and then introduced into an insulation layer extrusion device for insulation extrusion processing; in the S7 step, the insulation layer extrusion device includes an extrusion head 1, a first introduction part 2, a second introduction part 3 and a third introduction part 4, and the extruder head 1 is connected to the first introduction part 2, the second introduction part 3 and the third introduction part 4 respectively, and different coating materials are introduced into the extruder head 1; the extruder head 1 includes an inner mold 101, a middle mold 103, a mold core 113 and a mold sleeve 102, and the mold An inner mold liner 101 and a middle mold liner 103 are sequentially sleeved on the core 113 to form a first mold structure, an outer shell 104 is arranged outside the middle mold liner 103, and one end of the outer shell 104 is connected to the mold sleeve 102 to form a second mold structure; a first feed port 105 and a second feed port 107 are arranged on the outer shell 104, the first feed port 105 is connected to the first introduction part 2 for introducing the first layer of coating material, and the second feed port 107 is connected to the second introduction part 3 for introducing the second layer of coating material; a third feed port 110 on the mold sleeve 102 is connected to the third introduction part 4 for introducing the third layer of coating material.

[0072] It should be noted that during the cable production process, the twisted wires need to be coated to increase the fire resistance, waterproof and moisture resistance of the entire cable. However, usually only one layer of film can be coated on the outside of the twisted wires, which cannot meet the production needs. Therefore, we designed a three-layer extruder, in which the extruder head 1 is respectively connected to the first inlet part 2, the second inlet part 3 and the third inlet part 4, which are used to introduce the first layer of coating material, the second layer of coating material and the third layer of coating material. The introduced coating materials can be gathered into the third coating chamber 111 to realize the layered stacking of the coating materials, and under the action of the traction equipment, the three-layer coating of the stranded wire is completed at one time.

[0073] like Figure 3-Figure 7 As shown, the inner mold liner 101 is a conical rotating body structure, and a first guide groove 106 is arranged on the outer wall of the inner mold liner 101, one end of the first guide groove 106 is connected to the first coating chamber 112, and the other end of the first guide groove 106 is connected to the first feed port 105; a second guide groove 108 is arranged on the outer wall of the middle mold liner 103, one end of the second guide groove 108 is connected to the second coating chamber 109, and the other end of the second guide groove 108 is connected to the second feed port 107; the interior of the mold sleeve 102 is a conical cavity structure, and a third coating chamber 111 is formed between the mold sleeve 102 and the middle mold liner 103 for collecting three layers of coating materials, and the third feed port 110 on the upper part of the mold sleeve 102 is connected to the third coating chamber 111.

[0074] It should be noted that in order to achieve three-layer coating on the surface of the stranded wire, the upper part of our mold core 113 is respectively provided with an inner mold liner 101, a middle mold liner 103 and an outer shell 104 to form a first mold structure, wherein a third wire through hole is provided in the middle part of the mold core 113 for threading the stranded wire, and a first guide groove 106 is provided on the outer wall of the inner mold liner 101 connected to the mold core 113, and the first guide groove 106 is connected to the first feed port 105. After the first layer of coating material enters the first guide groove 106, it flows through the first guide groove 106 to the first coating chamber 112 where it connects with the surface of the stranded wire to prepare for coating.

[0075] It should be further explained that, in order to achieve the diversion of the second layer of coating material, a second diversion groove 108 is also set on the outer wall of the middle mold 103, and is connected with the second feed port 107. The second layer of coating material can enter the second diversion groove 108 through the second feed port 107, and flow into the second coating chamber 109, and be evenly laid on the upper part of the first layer of coating material.

[0076] It should be further explained that the mold sleeve 102 is connected to the outer shell 104 by screws to form a second mold structure. The interior of the mold sleeve 102 is provided with a third coating chamber 111 matching the two coating chambers. The third layer of coating material flows into the third coating chamber 111 through the third feed port 110 and gathers on the upper part of the second layer of coating material.

[0077] It should be further explained that our inner mold 101 and middle mold 103 are both conical rotating body structures, and the first guide groove 106 and the second guide groove 108 are laid on the outer walls of the inner mold 101 and the middle mold 103 respectively. The coating material will flow on the upper part of the guide groove. The advantage of this diversion method is that the diversion is smoother, the material is evenly distributed, and the occurrence of flow interruption is prevented. The coating material can be evenly gathered to the conical mouth, that is, through the first coating chamber 112 and the second coating chamber 109 to the third coating chamber 111, at this time, the coating liquid of the second layer can be distributed on the first layer The upper part of the coating liquid is introduced into the third layer of coating material through the mold sleeve 102 and distributed on the surface of the second layer of coating material. At this time, pulling the strand can complete the three-layer coating of the strand. In summary, we introduce the first coating material through the first introduction part 2, and introduce it into the first coating chamber 112 after smelting, so as to realize the integration of feeding, smelting and guiding of the first layer of coating material, and adopt the same method to introduce the second layer of coating material and the third layer of coating material in turn, and finally form a three-layer material stacking structure in the third coating chamber 111. Under the action of the traction equipment, the strand is pulled to complete the coating.

[0078] like Figure 2 , Figure 8 , Fig. 9 , Fig.10 , Fig.11 and Fig.12 As shown, the first introduction part 2 includes a material guide group 7 and a smelting group 6. The material outlet of the material guide group 7 is connected to the material feed port of the smelting group 6 to guide the material into the interior of the smelting group 6. The material guide group 7 includes a first fixed bracket 701, a first material guide box 702, a drive box 703, a first spiral material guide rod 710 and a first material guide pipe 708. The first material guide box 702 is arranged on the upper part of the first fixed bracket 701, and the first material guide pipe 708 is arranged inside the first material guide box 702. 8. A plurality of connecting rings 709 are arranged on the outer wall of the first material guide tube 708; a first spiral material guide rod 710 is arranged inside the first material guide tube 708, and one end of the first spiral material guide rod 710 is connected to the driving box 703 through a coupling; a plurality of feed troughs 711 are arranged on the upper part of the first material guide box 702, and the feed pipes at the lower parts of the feed troughs 711 are connected to the inner cavity of the first material guide tube 708; the discharge port of the first material guide box 702 is connected to the smelting group 6.

[0079] It should be noted that in order to meet the requirements of three-layer coating, we have designed three material guiding parts with the same internal structure. Among them, the function of the material guiding group 7 is to mix and transport the materials, introduce them into the smelting group 6 for heating and smelting to become coating materials, and then introduce them into the extruder head 1. During the transportation of solid materials, different additives need to be added to make the coating materials have high temperature resistance and corrosion resistance. We have set a first material guiding tube 708 inside the drive box 703, and evenly feed the materials through the internal first spiral guiding rod 710. In addition, a number of feeding troughs 711 are set on the upper part of the drive box 703 for different material replenishment. After guiding the materials, and in order to fully mix the materials in the first material guiding tube 708, we set a connecting ring 709 on the outer wall of the first material guiding tube 708, and set a plurality of toggle bars extending into the internal chamber of the first material guiding tube 708 on the inner wall of the connecting ring 709, which can cooperate with the first spiral guiding rod 710 to stir and achieve mixing during the material guiding process.

[0080] like Figure 9-11As shown, the smelting group 6 includes a second fixed support 601, a smelting box 604, a smelting tube 611, a first heater 612 and a second heater 613. The smelting box 604 is arranged on the upper part of the second fixed support 601, and the smelting box 604 is provided with a smelting tube 611, a first heater 612 and a second heater 613 inside; a plurality of first heaters 612 are arranged on the smelting tube 611, and the upper part of the first heater 612 is connected to the heating box at the bottom of the second fixed support 601 through a fourth air guide pipe 603; the second heater 613 is arranged The first heater 612 is a rectangular hollow structure with an opening in the middle, and a first air inlet and a first air outlet are provided on the first heater 612. The first air inlet is connected to the fourth air pipe 603, and the first air outlet is connected to the first air pipe 606 through the connection hole 605 on the smelting box 604 through the third pipeline; the first air pipe 606 is fixedly arranged on the upper part of the smelting box 604 by a fixer 607.

[0081] It should be noted that after the material enters the smelting tube 611, it needs to be smelted, and electric heating or gas heating is generally used. Among them, gas heating will produce a lot of smoke and is more expensive. Although the electric heating method is relatively stable, the coating material melted into a liquid state will condense due to the temperature drop during transportation. Therefore, we adopt a two-stage hot air flow heating method. First, the hot air generated by the heating box is introduced into the first heater 612 through the fourth air guide pipe 603 to heat the smelting tube 611 and melt the material inside. The smelted material is transported under the drive of the second spiral guide rod 619. In order to prevent condensation during transportation, we introduce the hot air guided out of the first heater 612 into the air pump 609 through the first air guide pipe 606, and enter the second heater 613 through the air pump 609, and heat the guide part of the smelting tube 611 again to effectively prevent the material from condensing.

[0082] like Figure 8-Figure 12As shown, a second spiral guide rod 619 is provided inside the smelting tube 611, and the second spiral guide rod 619 is connected to the second driving motor 608 through a connecting piece; the second heater 613 is a cylindrical cavity structure with two ends open, and a cavity interlayer is provided inside the second heater 613, and a guide groove structure is formed inside the cavity interlayer through a plurality of guide plates 618; a second air inlet 614 and a second air outlet 615 are provided on the upper part of the second heater 613, and the second air inlet 614 and the second air guide pipe 610 are connected to each other. The second air outlet 615 is connected to the air outlet pipe; a support plate 616 is provided at the bottom of the smelting box 604, and the support plate 616 is connected to the second fixed bracket 601, and a plurality of connecting grooves 617 are provided on the support plate 616; a driving wheel 706 connected to the output shaft of the first driving motor 707 and a driven wheel 705 connected to the first spiral guide rod 710 are provided inside the driving box 703, the driving wheel 706 is meshed and connected with the driven wheel 705, and a sealing shell 704 is provided at one end of the driving box 703.

[0083] It should be noted that in order to allow the hot air flow introduced into the second heater 613 to circulate internally and heat the guide part of the smelting tube 611 again, we set a plurality of guide plates 618 inside the cavity interlayer inside the second heater 613 to form a guide groove, and the hot air flow can circulate in the guide groove, thereby increasing the heating effect.

[0084] It should be further explained that, in order to better set the smelting box 604 on the second fixed bracket 601, a support plate 616 is set at the bottom of the smelting box 604, and a plurality of connecting grooves 617 are set on the support plate 616 for accommodating the fourth air guide pipe 603 to facilitate the hot air diversion.

[0085] It should be further explained that the output shaft of the first driving motor 707 is meshedly connected with the driven wheel 705 through the driving wheel 706, and the power is transmitted to the first spiral guide rod 710 to achieve driving, and the speed is adjusted through two gears.

[0086] like Figure 2 , Fig.13 , Fig.14 , Fig.15 and Fig.16As shown, it also includes a cooling part 5, which includes a third fixed bracket 501, a water guide groove 504, an atomizing cooling mechanism 9, a first water removal mechanism 10 and a second water removal mechanism 11. The upper part of the third fixed bracket 501 is provided with the atomizing cooling mechanism 9, and the output end of the atomizing cooling mechanism 9 is connected through the first water removal mechanism 10 and the second water removal mechanism 11; the atomizing cooling mechanism 9 includes an atomizing cooling box 901, a cooling pipe 903, a first guide pump 902 and a feeding mechanism. The atomizing cooling box 901 is a rectangular cavity structure with openings at both ends. A first feeder 905 for a wire is provided at the opening of the atomizing cooling box 901. A plurality of atomizers are arranged inside the atomizing cooling box 901, and the atomizers are connected to the water collecting tank 907 through the first guide pump 902 and the first water guide pipe 906; the cooling pipe 903 is covered on the atomizing cooling box 901, and a wire passing mechanism for guiding the stranded wire is arranged at the inlet of the cooling pipe 903, and a water inlet pipe 904 and a water outlet pipe 908 are arranged on the cooling pipe 903, the water inlet pipe 904 is connected to the external water source, and the water outlet pipe 908 is connected to the water guide groove 504 at one end of the third fixed bracket 501; the water guide groove 504 is arranged on one side of the water collecting tank 907, and the water guide groove 504 is connected to the water tank through the guide hole.

[0087] It should be noted that after the cable is coated, the surface temperature is relatively high. If it is not cooled quickly, it will affect the subsequent winding and packaging. Therefore, we designed a cooling part 5 for cooling the cable surface and solidifying the insulation layer. We respectively set an atomizing cooling mechanism 9, a first water removal mechanism 10 and a second water removal mechanism 11 on the upper part of the third fixed bracket 501. Among them, the atomizing cooling mechanism 9 is an important structure for cooling. A cooling pipe 903 is set on the upper part of the atomizing cooling box 901 and connected to the water tank. Cooling water can be introduced into it and flow. In addition, a wire passing mechanism is set at the feeding end of the cooling pipe 903. After the cable passes through the wire passing mechanism and enters the cooling pipe 903, it undergoes the first water cooling treatment. The heat on the surface of the cable is taken away by the flowing cooling water, and the cooling water is recovered through the water collecting tank 907, thereby realizing the first cooling.

[0088] It should be further explained that the water-cooled cable is introduced into the mist cooling box 901, the water in the water tank is adsorbed by the first guide pump 902, and atomized by the atomizer and spread in the chamber of the mist cooling box 901. The cable is cooled for the second time during the process of passing through the mist cooling box 901. The advantage of this mist cooling is that the cable surface can be fully in contact with the misted cold air, and after the misted cold air contacts the cable surface, water droplets will be formed and fall into the water collection tank 907 at the bottom for collection. In the process of continuous dripping of water droplets, the remaining temperature on the cable surface is taken away, thereby enhancing the cooling effect.

[0089] like Figure 13-Figure 20As shown, the first water removal mechanism 10 includes a water removal box 1001, an air guide groove 1003, a second feeder 1002 and a first ventilation pipe 1005. A plurality of first ventilation pipes 1005 are arranged inside the water removal box 1001. The upper part of the first ventilation pipe 1005 is connected to the air guide groove 1003, and the lower part of the first ventilation pipe 1005 is connected to the water guide groove 504 through the second air guide pipe 502; the air guide groove 1003 is arranged at the upper part of the water removal box 1001, and a plurality of first blowers 1004 are arranged on the air guide groove 1003 to ventilate the first ventilation pipe 1005. Second feeders 1002 are arranged on both sides of the water removal box 1001, and the first ventilation pipe 1005 corresponding to the feeding port of the second feeder 1002 is provided with a plurality of first blowers 1004. A second wire through hole 1006 is provided; the second water removal mechanism 11 includes a drying box 1101, a third feeder 1102, a flow guide 1105 and a third air outlet 1104. The drying box 1101 is a cylindrical hollow cavity structure with openings at both ends. The third air inlet 1103 is provided at the upper part of the drying box 1101, and the third air outlet 1104 is provided at the lower part. A second blower is provided inside the third air inlet 1103, and the third air outlet 1104 is connected to the water guide trough 504 through a third air guide duct 503; third feeders 1102 for guiding wires are provided at both ends of the drying box 1101, and flow guides 1105 are symmetrically provided inside the drying box 1101, and the flow guides 1105 are located on both sides of the third air inlet 1103.

[0090] It should be noted that after the cable is cooled twice by the atomizing cooling mechanism 9, a lot of water stains will remain on the surface. If they are not removed, the subsequent winding will be affected. Therefore, we have designed a first water removal mechanism 10, and multiple first ventilation ducts 1005 are arranged inside the water removal box 1001. The first ventilation duct 1005 is provided with a second wire through hole 1006 for cable introduction. The upper part of the first ventilation duct 1005 is connected with the air guide groove 1003, and the airflow is generated by the first blower 1004. When working, the cable with water stains on the surface passes through multiple first ventilation ducts 1005. Under the action of the airflow, the water stains on the surface will drip and fall into the second air guide duct 502 along with the first ventilation duct 1005. Under the action of these multiple first ventilation ducts 1005, the water stains on the surface of the cable are removed.

[0091] It should be further explained that the airflow inside the first ventilation duct 1005 is connected to the inside of the water trough 504 through the second air duct 502. The water trough 504 serves as a cooling water trough and is connected to the water collecting trough 907. Its function is to perform a static cooling treatment on the cooling water collected in the water collecting trough 907. At this time, introducing the airflow through the second air duct 502 can accelerate the cooling effect of the cooling water in the water trough 504 and realize multiple utilization of the airflow. A water outlet valve can be set on the second air duct 502 to discharge the water stains dripping from the first ventilation duct 1005 after a period of time.

[0092] It should be further explained that after the cable is processed by the first water removal mechanism 10, most of the water stains have been removed. In order to enhance the effect, we have also designed a second water removal mechanism 11, and set a third air outlet 1104 and a third air inlet 1103 inside the drying box 1101, wherein a second blower is set inside the third air inlet 1103 to generate airflow, and the airflow is guided by the action of two internal guides 1105. The airflow rushes against each other inside the drying box 1101, and the impact force generated by the airflow will act on the surface of the cable, washing away the remaining water stains. In this process, the airflow will be discharged from the third air outlet 1104, thereby achieving the purpose of water removal, and is exported through the third air outlet 1104. In this process, the water stains remaining on the surface of the cable are removed, thereby enhancing the removal effect.

[0093] It should be particularly noted that the airflow discharged from the third air outlet 1104 is connected to the water guide groove 504 through the third air guide duct 503 , so as to enhance the cooling of the water stains inside the water guide groove 504 .

[0094] In summary, after the cable passes through the first water removal mechanism 10 and the second water removal mechanism 11 in sequence under the action of the traction equipment, the water stains on the surface can be basically completely removed, which is convenient for subsequent winding and packaging.

[0095] like Fig.15 , Fig.16 and Fig.21As shown, it also includes a wiping group, which includes a carrier bracket 801, an upper wiping group and a lower wiping group. The upper wiping group and the lower wiping group are symmetrically arranged inside the carrier bracket 801. The upper wiping group includes a connecting rod 802, a pressure spring 803, a wiping plate 804 and a wiping cotton 805. The wiping plate 804 is connected to the through hole on the carrier bracket 801 through the connecting rod 802, and a positioning ring is arranged on the connecting rod 802 for fixing and limiting; a pressure spring 803 is arranged on the outer wall of the connecting rod 802 to form an elastic structure; A wiping cotton 805 is arranged at the lower part of the wiping plate 804; a reflux groove 505 is arranged on one side of the water guide groove 504, and the reflux groove 505 is connected to the water collecting groove 907 at the bottom of the third fixed bracket 501 through the second guide pump 506 and the second water guide pipe 507; the wire passing mechanism includes a connecting support 508, a first wire wheel 509 and a second wire wheel 510, the connecting support 508 is arranged at the inlet of the cooling pipe 903, and a wire passing through hole is arranged on the connecting support 508, and the first wire wheel 509 and the second wire wheel 510 are arranged on the fixing ears on both sides of the wire passing through hole.

[0096] It should be noted that the function of the wiping group is to wipe off some watermarks remaining on the surface of the cable to facilitate subsequent packaging. Based on this, we designed a wiping group to wipe the water stains on the surface of the cable through the upper wiping group and the lower wiping group, wherein the wiping plate 804 is connected to the through hole on the carrier bracket 801 through the connecting rod 802, and a pressure spring 803 is arranged on the outer wall of the connecting rod 802 to form an elastic structure. When the cable is pulled, the water stains are absorbed and wiped by the wiping cotton 805 at the bottom of the wiping plate 804, and the design of the elastic structure can reduce the rigid pulling force between the cable and the wiping group when the cable is pulled, thereby playing a buffering role.

[0097] It should be further explained that the wire passing mechanism is provided to allow the stranded wire to smoothly enter the interior of the cooling pipe 903, and the first wire wheel 509 and the second wire wheel 510 assist in guiding. The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the purpose of the present invention.

Claims

1. A composite three-layer insulated cable processing technology, characterized in that: The following steps are involved: S1. Wire drawing: The copper rod or aluminum rod is drawn through a wire drawing machine for multiple times to form a wire of the required diameter; S2, Annealing: Annealing the wire after drawing to reduce its hardness and improve its flexibility; S3, tinning: tinning the wire after annealing and cooling to prevent oxidation of the wire; S4, twisting: twisting multiple conductors into a cable core to improve the flexibility and strength of the cable; S5. Inner insulation layer extrusion: Extrude a layer of insulation material outside the cable core to form an insulated wire core with an insulating protective layer structure to ensure the insulation performance of the cable; S6, stranded wire: twist multiple insulated wire cores into a wire, and add filler to ensure the stability of the stranded wire; S7, insulation jacket extrusion: through the insulation layer extrusion device, three layers of sheath insulation material are extruded on the outside of the stranded wire at the same time to form a three-layer insulation protection structure to protect the stranded wire from the influence of the external environment; S8, cooling: water cooling the molded cable in step S7 to facilitate rapid cooling of the extruded insulation layer; S9, dewatering: the water-cooled cable passes through a dewatering device to remove water stains on the surface, and then is packaged and rolled up; in the S4 twisting step, 20-30 wires are twisted by a twisting device, and the obtained twisted wires are rolled up with a winding device, and then introduced into an insulation layer extrusion device for insulation extrusion processing; In the step S7, the insulating layer extrusion device comprises an extruder head (1), a first introduction part (2), a second introduction part (3) and a third introduction part (4), and the extruder head (1) is connected to the first introduction part (2), the second introduction part (3) and the third introduction part (4) respectively, so as to introduce different coating materials into the extruder head (1); The extruder head (1) comprises an inner mold liner (101), a middle mold liner (103), a mold core (113) and a mold sleeve (102); the inner mold liner (101) and the middle mold liner (103) are sequentially sleeved on the mold core (113) to form a first mold structure; an outer shell (104) is arranged outside the middle mold liner (103); one end of the outer shell (104) is connected to the mold sleeve (102) to form a second mold structure; The housing (104) is provided with a first feed port (105) and a second feed port (107); the first feed port (105) is connected to the first introduction portion (2) for introducing the first layer of coating material, and the second feed port (107) is connected to the second introduction portion (3) for introducing the second layer of coating material; The third feed port (110) on the mold sleeve (102) is connected to the third introduction part (4) for introducing the third layer of coating material; the first introduction part (2) comprises a material guide group (7) and a smelting group (6); the discharge port of the material guide group (7) is connected to the feed port of the smelting group (6) to introduce the material into the interior of the smelting group (6); The material guide group (7) comprises a first fixed bracket (701), a first material guide box (702), a driving box (703), a first spiral material guide rod (710) and a first material guide pipe (708); the first material guide box (702) is arranged on the upper part of the first fixed bracket (701), and the first material guide pipe (708) is arranged inside the first material guide box (702); a plurality of connecting rings (709) are arranged on the outer wall of the first material guide pipe (708); a first spiral material guide rod (710) is arranged inside the first material guide pipe (708), and one end of the first spiral material guide rod (710) is connected to the driving box (703) through a coupling; The smelting group (6) comprises a second fixed support (601), a smelting box (604), a smelting tube (611), a first heater (612) and a second heater (613), wherein the smelting box (604) is arranged on the upper part of the second fixed support (601), and the smelting tube (611), the first heater (612) and the second heater (613) are arranged inside the smelting box (604); A plurality of first heaters (612) are arranged on the upper part of the smelting tube (611), and the first heaters (612) are connected to the heating box at the bottom of the second fixed bracket (601) through the fourth air guide pipe (603); The second heater (613) is arranged on the smelting tube (611), and the second heater (613) is connected to the gas outlet end of the first gas guide tube (606) through the second gas guide tube (610) and the gas guide pump (609); A second spiral material guide rod (619) is arranged inside the smelting tube (611), and the second spiral material guide rod (619) is connected to the second driving motor (608) through a connecting piece; The second heater (613) is a cylindrical hollow structure with openings at both ends, and a hollow interlayer is provided inside the second heater (613), and a guide groove structure is formed inside the hollow interlayer through a plurality of guide plates (618); The second heater (613) is provided with a second air inlet (614) and a second air outlet (615), wherein the second air inlet (614) is connected to the second air guide pipe (610), and the second air outlet (615) is connected to the air outlet pipeline; A support plate (616) is provided at the bottom of the smelting box (604), and the support plate (616) is connected to the second fixed bracket (601), and a plurality of connection grooves (617) are provided on the support plate (616); A driving wheel (706) connected to the output shaft of the first driving motor (707) and a driven wheel (705) connected to the first spiral guide rod (710) are arranged inside the driving box (703); the driving wheel (706) and the driven wheel (705) are meshedly connected, and a sealing shell (704) is arranged at one end of the driving box (703).

2. A composite three-layer insulated cable processing technology according to claim 1, characterized in that: The inner mold liner (101) is a conical rotating body structure, and a first guide groove (106) is arranged on the outer wall of the inner mold liner (101), one end of the first guide groove (106) is connected to the first film coating chamber (112), and the other end of the first guide groove (106) is connected to the first feed port (105); A second guide groove (108) is provided on the outer wall of the middle mold liner (103); one end of the second guide groove (108) is connected to the second film coating chamber (109), and the other end of the second guide groove (108) is connected to the second feed port (107); The interior of the mold sleeve (102) is a conical cavity structure, and a third coating chamber (111) is formed between the mold sleeve (102) and the middle mold liner (103) for collecting three layers of coating materials. The third feed port (110) at the top of the mold sleeve (102) is connected to the third coating chamber (111).

3. A composite three-layer insulated cable processing technology according to claim 2, characterized in that: The first material guide box (702) is provided with a plurality of feed troughs (711), and the feed pipes at the lower parts of the feed troughs (711) are connected to the inner cavity of the first material guide pipe (708); the discharge port of the first material guide box (702) is connected to the smelting group (6).

4. A composite three-layer insulated cable processing technology according to claim 3, characterized in that: The first heater (612) is a rectangular hollow structure with an opening in the middle. The first heater (612) is provided with a first air inlet and a first air outlet. The first air inlet is connected to the fourth air guide pipe (603). The first air outlet is connected to the first air guide pipe (606) through a third pipe penetrating a connection hole (605) on the smelting box (604). The first air guide pipe (606) is fixedly arranged on the upper part of the smelting box (604) through a fixer (607).

5. A composite three-layer insulated cable processing technology according to claim 1, characterized in that: In step S8, the formed cable is subjected to water cooling treatment by passing through a cooling unit (5), wherein the cooling unit (5) comprises a third fixed bracket (501), a water guide groove (504), an atomizing cooling mechanism (9), a first dewatering mechanism (10) and a second dewatering mechanism (11), wherein the atomizing cooling mechanism (9) is arranged on the upper part of the third fixed bracket (501), and an output end of the atomizing cooling mechanism (9) is connected to the second dewatering mechanism (11) via the first dewatering mechanism (10); The atomizing cooling mechanism (9) comprises an atomizing cooling box (901), a cooling pipeline (903), a first flow guide pump (902) and a feeding mechanism. The atomizing cooling box (901) is a rectangular hollow cavity structure with openings at both ends. A first feeder (905) for guide wires is arranged at the opening of the atomizing cooling box (901). A plurality of atomizers are arranged inside the atomizing cooling box (901). The atomizers are connected to the water tank via the first flow guide pump (902) and the first water guide pipe (906). The cooling pipe (903) is wrapped around the atomizing cooling box (901), a wire passing mechanism for guiding the stranded wire is provided at the inlet of the cooling pipe (903), a water inlet pipe (904) and a water outlet pipe (908) are provided on the cooling pipe (903), the water inlet pipe (904) is connected to an external water source, and the water outlet pipe (908) is connected to a water guide groove (504) at one end of the third fixed bracket (501); The water guide groove (504) is arranged on one side of the water collecting groove (907), and the water guide groove (504) is connected to the water collecting groove (907) through the diversion hole.

6. A composite three-layer insulated cable processing technology according to claim 5, characterized in that: The first dewatering mechanism (10) comprises a dewatering box (1001), an air guide groove (1003), a second feeder (1002) and a first ventilation pipe (1005); a plurality of first ventilation pipes (1005) are arranged inside the dewatering box (1001); the upper portion of the first ventilation pipe (1005) is connected to the air guide groove (1003); and the lower portion of the first ventilation pipe (1005) is connected to the water guide groove (504) via the second air guide pipe (502); An air guide groove (1003) is arranged on the upper part of the dewatering box (1001), and a plurality of first blowers (1004) are arranged on the air guide groove (1003) to ventilate the first ventilation pipe (1005). Second feeders (1002) are arranged on both sides of the dewatering box (1001), and a second wire through hole (1006) is arranged on the first ventilation pipe (1005) corresponding to the feed port of the second feeder (1002); The second water removal mechanism (11) comprises a drying box (1101), a third feeder (1102), a flow guide (1105) and a third air outlet (1104); the drying box (1101) is a cylindrical hollow structure with openings at both ends; a third air inlet (1103) is arranged at the upper part of the drying box (1101), and a third air outlet (1104) is arranged at the lower part; a second blower is arranged inside the third air inlet (1103); the third air outlet (1104) is connected to the water guide groove (504) through a third air guide duct (503); third feeders (1102) for guiding wires are arranged at both ends of the drying box (1101); flow guides (1105) are symmetrically arranged inside the drying box (1101), and the flow guides (1105) are located on both sides of the third air inlet (1103); The utility model also comprises a wiping group, the wiping group comprises a carrier support (801), an upper wiping group and a lower wiping group, the upper wiping group and the lower wiping group are symmetrically arranged inside the carrier support (801), the upper wiping group comprises a connecting rod (802), a pressure spring (803), a wiping plate (804) and a wiping cotton (805), the wiping plate (804) is connected to a through hole on the carrier support (801) through the connecting rod (802), and a positioning ring is arranged on the connecting rod (802) for fixing and limiting; a pressure spring (803) is arranged on the outer wall of the connecting rod (802) to form an elastic structure; and a wiping cotton (805) is arranged at the lower part of the wiping plate (804); A reflux groove (505) is provided on one side of the water guide groove (504), and the reflux groove (505) is connected to the water collection groove (907) at the bottom of the third fixed bracket (501) through a second guide pump (506) and a second water guide pipe (507); The wire passing mechanism comprises a connecting support (508), a first wire pulley (509) and a second wire pulley (510); the connecting support (508) is arranged at the inlet of the cooling pipe (903); a first wire passing through hole is arranged on the connecting support (508); and the first wire pulley (509) and the second wire pulley (510) are arranged on the fixing ears on both sides of the first wire passing through hole.

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