Environment-friendly halogen-free flame-retardant cable and manufacturing process thereof

Abstract

The invention discloses an environment-friendly halogen-free flame-retardant cable and a manufacturing process thereof, and relates to the field of cables, the environment-friendly halogen-free flame-retardant cable comprises a cable main body, the cable main body is composed of a cable core, an externally extruded insulating sleeve, two layers of wound fire-resistant mica tapes and an outermost sheath, and an anti-corrosion layer is arranged between the fire-resistant mica tapes and the sheath; comprising the following steps: 1, manufacturing a conductor; step 2, extruding an insulating material; step 3, a cabling process: enabling the product in the step 2 to pass through a processing mechanism on a workbench, transmitting the rotating force of a driving motor to a winding assembly by a transmission assembly, enabling the winding assembly and a winding roller to move cooperatively, winding two layers of fire-resistant mica tapes on the product, and improving the fire-resistant performance of the cable; step 4, extruding a protective layer; through connection of the transmission assembly, the driving motor and the winding assembly, synchronous operation is achieved, the time for manual intervention and equipment coordination is shortened, and the production efficiency is remarkably improved.

Description

Technical Field

[0001] The invention mainly relates to the technical field of cables, and in particular to an environmentally friendly halogen-free flame-retardant cable and a manufacturing process thereof. Background Art

[0002] In daily life, cables are very common signal transmission devices, and there are many types of cables, such as control cables, electronic cables, and radio frequency cables. Compared with traditional cables, fire-resistant cables have excellent properties such as fire resistance and are safer. When the cable is manufactured, a flame-retardant tape needs to be wrapped around the conductor through a winding device to improve the fire resistance of the cable.

[0003] A method for preparing a nuclear-grade highly flame-retardant cable described in the prior art includes: S1, using a wire wrapping assembly to install the cable to be processed, and installing one end of the cable on a traction assembly; S2, starting the wire wrapping assembly to wrap the flame-retardant tape on the surface of the cable, and starting the traction assembly to pull the cable to make it move at a uniform speed; S3, after the wire wrapping is completed, closing the wire wrapping assembly and the traction assembly, and removing the manufactured cable from the traction assembly.

[0004] Although the above technology can fix cables of different sizes and increase the adaptability of the device, in the production process, winding and wrapping are usually performed independently, requiring manual or coordinated operation of multiple devices, resulting in low production efficiency. In addition, due to equipment failure or human operation, winding and wrapping may be out of sync, affecting production quality and efficiency. Summary of the invention

[0005] Based on this, the object of the present invention is to provide an environmentally friendly halogen-free flame-retardant cable and a manufacturing process thereof to solve the technical problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions: An environmentally friendly halogen-free flame-retardant cable comprises a cable body, wherein the cable body is composed of a cable core, an external extruded insulating sleeve, two layers of wound fire-resistant mica tapes and an outermost sheath, and an anti-corrosion layer is provided between the fire-resistant mica tape and the sheath.

[0007] According to the above technical scheme, a manufacturing process of an environmentally friendly halogen-free flame-retardant cable is also provided, comprising the following steps: Step 1: Conductor manufacturing: first, copper wires are drawn to draw copper rods into required filaments, then stranded to twist multiple filaments into conductors, and then conductor cabling to twist multiple conductors into cable cores; Step 2: Extrusion of insulating materials: using extrusion technology, extruding an insulating sleeve outside the cable core. During extrusion, the initial temperature setting is controlled to be 5 to 10°C lower than the normal extrusion temperature to ensure that the material is processed within a suitable temperature range. Step 3: Cabling process: the product of step 2 is passed through the processing mechanism on the workbench, and the transmission assembly transmits the rotational force of the driving motor to the winding assembly, so that the winding assembly and the winding roller move in coordination, and two layers of fire-resistant mica tape are wound on the product to improve the fire resistance of the cable; Step 4: Sheath extrusion: the outer sheath machine and the welding device are placed on the same straight line, and synchronous operation is achieved through a PLC controller. The anti-corrosion layer and the sheath are extruded in sequence on the outer sheath machine to form a complete cable sheath structure.

[0008] Specifically, the upper surface of the workbench is provided with a winding roller and a protective shell on both sides, a through hole is provided at the center of one side of the protective shell close to the winding roller, both sides of the winding roller are connected to the workbench through side support plates, a driving motor is installed on the outer wall of one side support plate through a bracket, a driving gear is provided on the outer wall fixing sleeve of the output end of the driving motor, a mounting shell is fixed to the outer wall of one side of the protective shell by screws, and the processing mechanism is composed of a winding assembly, a protective shell and a transmission assembly; The winding assembly is arranged in a protective shell and an installation shell, and the transmission assembly is arranged in the protective shell. The transmission assembly is matched with the winding assembly and the driving motor. The transmission assembly is used to transmit the rotational force of the driving motor to the winding assembly, and control the winding assembly to wind the fire-resistant mica tape on the passing cable products. The winding assembly is provided with a U-shaped frame for monitoring the use of the fire-resistant mica tape.

[0009] The technical solution is specific, and the winding assembly includes a rotating drum, one end of the rotating drum passes through a side of a protective shell away from the winding roller, the outer wall of the end of the rotating drum located in the protective shell is provided with inner teeth, the inner teeth are provided for a sprocket, the mounting shell is connected with the protective shell through a square through groove, a driving sprocket is provided inside the mounting shell, the driving sprocket is rotatably connected with the mounting shell through a shaft rod, the driving sprocket and the inner teeth are transmission-connected by a first transmission chain, the end of the shaft rod close to the winding roller passes through the mounting shell and a plug-in groove is provided on the end face.

[0010] Specifically, a support frame is installed inside the protective shell, the center of the support frame is sleeved on the rotating drum and is in active contact with the rotating drum, connecting rods are symmetrically welded on the outer wall of one end of the rotating drum outside the protective shell, and placement rollers are fixed on the two connecting rods with screws, and the U-shaped mouth of the U-shaped frame is clamped on the side plate of the placement roller and fixed by screws.

[0011] Specifically, a movable groove is provided on one side wall of the U-shaped frame, a pressure sensor is embedded in the bottom of the movable groove, a movable plate is slidably provided in the movable groove, a top plate is welded on the top of one side of the U-shaped frame, an abutment plate is provided under the top plate, the movable plate and the abutment plate are welded, the top plate and the abutment plate are connected by a spring, a plurality of ball bearings are provided on the lower surface of the abutment plate and are in contact with the refractory mica tape, an alarm and a starter are installed on the outer wall of the protective shell, and the alarm and the starter are wirelessly connected to the pressure sensor.

[0012] The technical solution is specific, the transmission assembly includes a rotating shaft rotatably installed inside the protective shell, one end of the rotating shaft passes through the protective shell and the outer wall is fixedly sleeved with a driven gear, the tooth surface of the driven gear is in contact with the tooth surface of the driving gear, a worm is fixedly sleeved on the rotating shaft, a worm wheel is meshingly connected below the worm, a transmission shaft is fixedly penetrated at the center of the worm wheel, both ends of the transmission shaft are rotatably connected to the inner wall of the protective shell, an installation shaft is parallelly provided above one end of the transmission shaft away from the worm wheel, the installation shaft and the outer wall of the transmission shaft are fixedly sleeved with transmission gears, and the two transmission gears are connected through a second transmission chain.

[0013] Specifically, one end of the installation shaft passes through the side wall of the protective shell and is rotatably connected to the contacting wall body, a sliding rod is movably inserted into the interior of the installation shaft, and a limiting slide rail is symmetrically provided on the outer wall of the sliding rod, one end of the sliding rod is connected to a movable plate, and the other end of the sliding rod is integrally provided with a plug-in rod, and the plug-in rod matches the plug-in slot provided in the winding assembly; An electric telescopic cylinder is provided between the two transmission gears, a telescopic end of the electric telescopic cylinder is fixedly connected to the movable plate, and the electric telescopic cylinder is fixedly connected to the inner wall of the protective shell through screws.

[0014] The technical solution is specific that a mounting base is welded to the bottom of the protective shell, a slider is welded to the lower surface of the mounting base, a groove is provided on the upper surface of the workbench at the placement roller arranged in the winding assembly, a mounting slide groove is provided on one side of the long side of the winding roller on the workbench, the slider matches the mounting slide groove, ear plates are welded on both sides of the end surface of the slider and are fixedly connected to the workbench by screws.

[0015] In summary, the present invention mainly has the following beneficial effects: First, by installing the protective shell on the workbench, the driven gear is meshed with the driving gear of the drive motor, and then the electric telescopic cylinder works to push the slide bar to move along the inside of the installation shaft until the plug-in rod is inserted into the plug-in slot of the winding assembly, completing the connection of the transmission assembly, the drive motor and the winding assembly, achieving synchronous operation, reducing the time of manual intervention and equipment coordination, and significantly improving production efficiency; Secondly, by the size difference between the driving sprocket and the inner gear in the winding assembly, the rotation speed of the drum can be slightly greater than the winding speed, so that the fire-resistant mica tape is wound more tightly on the cable, improving the fire resistance and overall quality of the cable. The reasonable speed difference ensures that there will be no slack during the winding process. Third, through monitoring devices such as U-shaped frames and pressure sensors, the use of refractory mica tape can be monitored in real time. The abutment plate and the movable plate move downward under the push of the spring as the refractory mica tape is used. After the movable plate contacts the pressure sensor, the sensor sends a signal to the alarm and starter, and the alarm and starter make a sound, and the cash withdrawal staff replaces the refractory mica tape in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the cross section of the cable of the present invention; Figure 2 It is a schematic diagram of the process flow of the present invention; Figure 3 It is a schematic diagram of the axonometric structure of the workbench of the present invention; Figure 4 It is a schematic diagram of the main structure of the present invention; Figure 5 Schematic diagram of the processing mechanism of the present invention Figure 6 It is a schematic diagram of the winding assembly structure of the present invention; Figure 7 It is a schematic diagram of the U-shaped frame structure of the present invention; Figure 8 It is a cross-sectional schematic diagram of the protective shell of the present invention; Fig. 9 It is a schematic diagram of the transmission assembly of the present invention.

[0017] Description of the drawings: 1. Cable body; 101. Cable core; 102. Insulating sleeve; 103. Fire-resistant mica tape; 104. Sheath; 105. Anti-corrosion layer; 2. Workbench; 201. Groove; 202. Mounting slide; 3. Winding roller; 301. Side support plate; 302. Driving motor; 3021. Driving gear; 303. Bracket; 4. Protective shell; 401. Perforation; 402. Square through groove; 403. Mounting shell; 5. Processing mechanism; 6. Winding assembly; 601. Drum; 602. Inner track gear; 603. Connecting rod; 604. Placement roller; 605. First transmission chain; 606. Driving sprocket; 6061. Shaft; 607. 062, plug-in slot; 607, support frame; 7, protective shell; 701, alarm and starter; 702, mounting base; 703, slider; 8, transmission assembly; 801, rotating shaft; 8011, driven gear; 8012, worm; 802, transmission shaft; 8021, worm wheel; 803, mounting shaft; 8031, slide bar; 8032, plug-in rod; 804, transmission gear; 8041, second transmission chain; 805, electric telescopic cylinder; 8051, movable plate; 9, U-shaped frame; 901, movable slot; 9011, pressure sensor; 902, top plate; 903, spring; 904, abutment plate; 9041, movable plate. DETAILED DESCRIPTION

[0018] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0019] The following describes an embodiment of the present invention based on its overall structure. Example

[0020] See also Figure 1 As shown, an environmentally friendly halogen-free flame-retardant cable includes a cable body 1, which is composed of a cable core 101, an external extruded insulating sleeve 102, two layers of wound fire-resistant mica tape 103 and an outermost sheath 104, and an anti-corrosion layer 105 is provided between the fire-resistant mica tape 103 and the sheath 104.

[0021] See also Figure 2-5 As shown, according to the above embodiment, a manufacturing process of an environmentally friendly halogen-free flame-retardant cable is also provided, comprising the following steps: Step 1: Conductor manufacturing: first, copper wires are drawn to draw copper rods into required filaments, then stranded to twist multiple filaments into conductors, and then conductor cabling to twist multiple conductors into a cable core 101; Step 2: Extrusion of insulating material: using extrusion technology, extruding the insulating sleeve 102 outside the cable core 101. During extrusion, the initial temperature setting is controlled to be 5 to 10° C. lower than the normal extrusion temperature to ensure that the material is processed within a suitable temperature range. Step 3: Cabling process: the product of step 2 is passed through the processing mechanism 5 on the workbench 2, and the transmission assembly 8 transmits the rotation force of the driving motor 302 to the winding assembly 6, so that the winding assembly 6 and the winding roller 3 move in coordination, and two layers of fire-resistant mica tape 103 are wound on the product to improve the fire resistance of the cable; Step 4: Sheath extrusion: the outer sheath machine and the welding device are arranged on the same straight line, and synchronous operation is achieved through a PLC controller. The anti-corrosion layer 105 and the sheath 104 are extruded in sequence on the outer sheath machine to form a complete cable sheath structure.

[0022] The driving motor 302 in the device is connected to an external controller via a wire, wherein the winding roller 3 and the placing roller 604 both adopt the existing technology, and can disassemble the wound cable and the installed fire-resistant mica tape 103.

[0023] See also Figure 3 , Figure 4 , Figure 5 and Figure 7 As shown, a winding roller 3 and a protective shell 4 are respectively arranged on both sides of the upper surface of the workbench 2. A through hole 401 is opened at the center of one side of the protective shell 4 close to the winding roller 3. Both sides of the winding roller 3 are connected to the workbench 2 through side support plates 301. A driving motor 302 is installed on the outer wall of one side support plate 301 through a bracket 303. A driving gear 3021 is fixed on the outer wall of the output end of the driving motor 302. A mounting shell 403 is fixed to the outer wall of one side of the protective shell 4 by screws. The processing mechanism 5 consists of a winding The winding assembly 6, the protective shell 7 and the transmission assembly 8 are composed of a mounting base 702 welded at the bottom of the protective shell 7, a slider 703 is welded on the lower surface of the mounting base 702, a groove 201 is provided on the upper surface of the workbench 2 at the placement roller 604 set in the winding assembly 6, a mounting slide groove 202 is provided on the long side of the winding roller 3 on the workbench 2, the slider 703 matches the mounting slide groove 202, and ear plates are welded on both sides of the end surface of the slider 703 and fixedly connected to the workbench 2 by screws; The winding assembly 6 is arranged in the protective shell 4 and the mounting shell 403, and the transmission assembly 8 is arranged in the protective shell 7. The transmission assembly 8 matches the winding assembly 6 and the driving motor 302. The transmission assembly 8 is used to transmit the rotational force of the driving motor 302 to the winding assembly 6, and control the winding assembly 6 to wind the fire-resistant mica tape 103 on the passing cable product. The winding assembly 6 is provided with a U-shaped frame 9 for monitoring the use of the fire-resistant mica tape 103; A movable groove 901 is provided on one side wall of the U-shaped frame 9, a pressure sensor 9011 is embedded in the bottom of the movable groove 901, a movable plate 9041 is slidably provided in the movable groove 901, a top plate 902 is welded on the top of one side of the U-shaped frame 9, an abutment plate 904 is provided under the top plate 902, the movable plate 9041 is welded to the abutment plate 904, the top plate 902 and the abutment plate 904 are connected by a spring 903, a plurality of ball bearings are provided on the lower surface of the abutment plate 904 and are in contact with the fire-resistant mica tape 103, an alarm and starter 701 is installed on the outer wall of the protective shell 7, and the alarm and starter 701 is wirelessly connected to the pressure sensor 9011.

[0024] First, the slider 703 of the mounting base 702 and the mounting slot 202 are pushed together so that the protective shell 7 and the mounting base 702 are located on the workbench 2, and then the ear plate is fixed to the workbench 2 by screws. At this time, the electric telescopic cylinder 805 is started by the alarm and starter 701 to complete the connection of the transmission assembly 8, the drive motor 302 and the winding assembly 6; Then, during the cabling process, the cable is passed through the drum 601 of the winding assembly 6, and passed through the through hole 401 to be fixed on the winding roller 3, and then the driving motor 302 is started by the external controller, and the output end of the driving motor 302 drives the driving gear 3021 and the winding roller 3 to rotate, and the winding roller 3 pulls the cable, and at the same time, the driving gear 3021 transmits the rotational force to the winding assembly 6 through the transmission assembly 8 to achieve synchronous operation. The working winding assembly 6 winds the fire-resistant mica tape 103 around the outside of the passing cable, thereby achieving synchronous operation, reducing the time of manual intervention and equipment coordination, and significantly improving production efficiency; At this time, the abutment plate 904 will come into contact with the refractory mica tape 103 under the elasticity of the spring 903, and as the refractory mica tape 103 gradually moves downward due to the gradual reduction of winding, the moving abutment plate 904 drives the movable plate 9041 to move along the movable groove 901. When the lower surface of the movable plate 9041 contacts the pressure sensor 9011, the pressure sensor 9011 detects the pressure and sends a signal to the alarm and starter 701, sounding an alarm to remind the staff to pay attention to the use of the refractory mica tape 103 so that it can be replaced in time.

[0025] See also Figure 5 , Figure 8 and Fig. 9As shown, the transmission assembly 8 includes a rotating shaft 801 rotatably mounted inside the protective shell 7, one end of the rotating shaft 801 passes through the protective shell 7 and a driven gear 8011 is fixedly sleeved on the outer wall, the tooth surface of the driven gear 8011 contacts the tooth surface of the driving gear 3021, a worm 8012 is fixedly sleeved on the rotating shaft 801, a worm wheel 8021 is meshingly connected below the worm 8012, a transmission shaft 802 is fixedly penetrated at the center of the worm wheel 8021, both ends of the transmission shaft 802 are rotatably connected to the inner wall of the protective shell 7, an installation shaft 803 is parallelly provided above one end of the transmission shaft 802 away from the worm wheel 8021, and a transmission gear 804 is fixedly sleeved on the outer wall of the installation shaft 803 and the transmission shaft 802, and the two transmission gears 804 are transmission-connected through a second transmission chain 8041; One end of the mounting shaft 803 passes through the side wall of the protective shell 7 and is rotatably connected to the contacting wall body, a sliding rod 8031 ​​is movably penetrated inside the mounting shaft 803, and a limiting sliding rail is symmetrically provided on the outer wall of the sliding rod 8031, and one end of the sliding rod 8031 ​​is connected to a movable plate 8051, and the other end of the sliding rod 8031 ​​is integrally provided with a plug-in rod 8032, and the plug-in rod 8032 matches the plug-in groove 6062 provided in the winding assembly 6, and an electric telescopic cylinder 805 is provided between the two transmission gears 804, and the telescopic end of the electric telescopic cylinder 805 is fixedly connected to the movable plate 8051, and the electric telescopic cylinder 805 is fixedly connected to the inner wall of the protective shell 7 by screws.

[0026] After the transmission assembly 8 is installed, the electric telescopic cylinder 805 is controlled to work through the alarm and starter 701, and the telescopic end of the electric telescopic cylinder 805 drives the movable plate 8051 to move, and the movable plate 8051 drives the slide bar 8031 ​​to slide inside the installation shaft 803, so that the end of the slide bar 8031 ​​extends until the plug-in rod 8032 is inserted into the plug-in groove 6062 in the winding assembly 6, and the connection is completed; Then, when the driving motor 302 is working, the driving gear 3021 will drive the meshing driven gear 8011 to rotate, and the driven gear 8011 will drive the worm 8012 to rotate through the rotating shaft 801, and the worm 8012 will drive the worm wheel 8021 to rotate, and the worm wheel 8021 will drive the installed transmission gear 804 to rotate through the transmission shaft 802, and the transmission gear 804 will drive another transmission gear 804 above to rotate through the second transmission chain 8041, and the other transmission gear 804 will drive the penetration of the installation shaft 803 to rotate, and at this time, the slide bar 8031 ​​will rotate with the installation shaft 803 through the limiting slide rail, and drive the winding assembly 6 to operate through the plug-in rod 8032 and the plug-in slot 6062.

[0027] See also Figure 5 and Figure 6As shown, the winding assembly 6 includes a rotating drum 601, one end of which penetrates the side of the protective shell 4 away from the winding roller 3, and the outer wall of the end of the rotating drum 601 located in the protective shell 4 is provided with an inner track tooth 602, and the inner track tooth 602 is provided for a sprocket. The mounting shell 403 is connected with the protective shell 4 through a square through groove 402, and a driving sprocket 606 is provided inside the mounting shell 403. The driving sprocket 606 is rotatably connected with the mounting shell 403 through a shaft rod 6061, and the driving sprocket 606 and the inner track tooth 602 are connected through a first The transmission chain 605 is connected for transmission, the end of the shaft rod 6061 close to the winding roller 3 passes through the mounting shell 403 and a plug-in slot 6062 is opened on the end face, a support frame 607 is installed inside the protective shell 4, the center of the support frame 607 is sleeved on the rotating drum 601 and is in active contact with it, the outer wall of one end of the rotating drum 601 located outside the protective shell 4 is symmetrically welded with connecting rods 603, and the two connecting rods 603 are both fixed with placement rollers 604 by screws, and the U-shaped mouth of the U-shaped frame 9 is clamped on the side plate of the placement roller 604 and fixed by screws.

[0028] When the device is started, the shaft 6061 will rotate following the slide bar 8031 ​​due to the insertion of the plug-in rod 8032 and the plug-in slot 6062, and the shaft 6061 will drive the driving sprocket 606 to rotate, and the driving sprocket 606 will drive the inner tooth 602 to rotate through the first transmission chain 605, thereby rotating the drum 601, and the drum 601 will drive the two connecting rods 603 to rotate, and the two connecting rods 603 will drive the placement rollers 604 to rotate, and the two placement rollers 604 will wind the passing cable through the installed refractory mica tape 103, wherein the diameter of the driving sprocket 606 is larger than the diameter of the inner tooth 602, which can make the rotation speed of the drum 601 slightly larger than the winding rotation speed, so that the refractory mica tape 103 is wound more tightly on the cable, and a reasonable speed difference ensures that there will be no slack during the winding process.

[0029] The working principle of the present invention is: During the cabling process, the cable is passed through the drum 601 of the winding assembly 6, and passed through the through hole 401 to be fixed on the winding roller 3, and then the driving motor 302 is started by the external controller, and the output end of the driving motor 302 drives the driving gear 3021 and the winding roller 3 to rotate, and the winding roller 3 pulls the cable, and at the same time the driving gear 3021 drives the meshing driven gear 8011 to rotate, and the driven gear 8011 drives the worm 8012 to rotate through the rotating shaft 801, and the worm 8012 drives the worm wheel 8021 to rotate, and the worm wheel 8021 drives the installed transmission gear 804 to rotate through the transmission shaft 802, and the transmission gear 804 drives another transmission gear 804 above to rotate through the second transmission chain 8041, and the other transmission gear 804 drives the installed installation shaft 803 to rotate; At this time, the slide bar 8031 ​​will rotate along with the installation shaft 803 through the limiting slide rail, and through the connection between the plug-in rod 8032 and the plug-in slot 6062, the shaft rod 6061 will rotate along with the slide bar 8031, the shaft rod 6061 will drive the driving sprocket 606 to rotate, the driving sprocket 606 will drive the inner track gear 602 to rotate through the first transmission chain 605, and then the rotating drum 601 will rotate, the rotating drum 601 will drive the two connecting rods 603 to rotate, the two connecting rods 603 will drive the placement rollers 604 to rotate, and the two placement rollers 604 will wind the passing cables through the installed fire-resistant mica tape 103.

[0030] Although an embodiment of the present invention has been shown and described, this specific embodiment is merely an explanation of the present invention and is not a limitation of the invention. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contributions as needed without departing from the principles and purpose of the present invention. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. An environmentally friendly halogen-free flame-retardant cable, comprising a cable body (1), characterized in that The cable body (1) is composed of a cable core (101), an external extruded insulating sleeve (102), two layers of wound fire-resistant mica tape (103), and an outermost sheath (104).

2. The environmentally friendly halogen-free flame-retardant cable according to claim 1, characterized in that: An anti-corrosion layer (105) is provided between the fire-resistant mica tape (103) and the sheath (104).

3. A manufacturing process of an environmentally friendly halogen-free flame-retardant cable according to claim 2, characterized in that: The following steps are involved: Step 1, conductor manufacturing, first drawing the copper wire, drawing the copper rod into the required filaments, then stranding the strands, twisting the multiple filaments into a conductor, and then cabling the conductors, twisting the multiple conductors into a cable core (101); Step 2: Extruding the insulating material, using an extrusion process to extrude the insulating sleeve (102) outside the cable core (101), and controlling the initial temperature setting during extrusion to be 5 to 10° C. lower than the normal extrusion temperature to ensure that the material is processed within a suitable temperature range; Step 3, cabling process, the product of step 2 is passed through the processing mechanism (5) on the workbench (2), and the transmission component (8) transmits the rotational force of the driving motor (302) to the winding component (6), so that the winding component (6) and the winding roller (3) move in coordination, and two layers of fire-resistant mica tape (103) are wound around the product, thereby improving the fire resistance of the cable; Step 4: Sheath extrusion: the outer sheath machine and the welding device are arranged on the same straight line and synchronously operated through a PLC controller. The anti-corrosion layer (105) and the sheath (104) are extruded in sequence on the outer sheath machine to form a complete cable sheath structure.

4. The manufacturing process of an environmentally friendly halogen-free flame-retardant cable according to claim 3, characterized in that: A winding roller (3) and a protective shell (4) are respectively arranged on both sides of the upper surface of the workbench (2); a through hole (401) is opened at the center of one side of the protective shell (4) close to the winding roller (3); both sides of the winding roller (3) are connected to the workbench (2) through side support plates (301); a driving motor (302) is installed on the outer wall of one side support plate (301) through a bracket (303); a driving gear (3021) is fixedly provided on the outer wall of the output end of the driving motor (302); a mounting shell (403) is fixed to the outer wall of one side of the protective shell (4) by screws; and the processing mechanism (5) is composed of a winding assembly (6), a protective shell (7) and a transmission assembly (8); The winding assembly (6) is arranged in the protective shell (4) and the mounting shell (403), and the transmission assembly (8) is arranged in the protective shell (7). The transmission assembly (8) matches the winding assembly (6) and the drive motor (302). The transmission assembly (8) is used to transmit the rotational force of the drive motor (302) to the winding assembly (6) to control the winding assembly (6) to wind the fire-resistant mica tape (103) on the passing cable product. The winding assembly (6) is provided with a U-shaped frame (9) for monitoring the use of the fire-resistant mica tape (103).

5. The manufacturing process of an environmentally friendly halogen-free flame-retardant cable according to claim 4, characterized in that: The winding assembly (6) comprises a rotating drum (601), one end of the rotating drum (601) passes through a side of the protective shell (4) away from the winding roller (3), the outer wall of the end of the rotating drum (601) located in the protective shell (4) is provided with inner teeth (602), the inner teeth (602) are arranged in a sprocket, the mounting shell (403) is connected to the protective shell (4) through a square through slot (402), a driving sprocket (606) is arranged inside the mounting shell (403), the driving sprocket (606) is rotatably connected to the mounting shell (403) through a shaft (6061) passing through, the driving sprocket (606) and the inner teeth (602) are transmission-connected through a first transmission chain (605), and the end of the shaft (6061) close to the winding roller (3) passes through the mounting shell (403) and a plug-in slot (6062) is arranged on the end surface.

6. The manufacturing process of an environmentally friendly halogen-free flame-retardant cable according to claim 5, characterized in that: A support frame (607) is installed inside the protective shell (4), and the center of the support frame (607) is sleeved on the rotating drum (601) and is in active contact with the rotating drum (601). Connecting rods (603) are symmetrically welded to the outer wall of one end of the rotating drum (601) located outside the protective shell (4), and placement rollers (604) are fixed to the two connecting rods (603) by screws. The U-shaped opening of the U-shaped frame (9) is clamped on the side plate of the placement roller (604) and fixed by screws.

7. The manufacturing process of an environmentally friendly halogen-free flame-retardant cable according to claim 4, characterized in that: A movable groove (901) is provided on one side wall of the U-shaped frame (9), a pressure sensor (9011) is embedded in the bottom of the movable groove (901), a movable plate (9041) is slidably provided in the movable groove (901), a top plate (902) is welded to the top of one side of the U-shaped frame (9), an abutment plate (904) is provided below the top plate (902), the movable plate (9041) is welded to the abutment plate (904), the top plate (902) and the abutment plate (904) are connected via a spring (903), a plurality of balls are provided on the lower surface of the abutment plate (904) and are in contact with a fire-resistant mica tape (103), an alarm and starter (701) is installed on the outer wall of the protective shell (7), and the alarm and starter (701) is wirelessly connected to the pressure sensor (9011).

8. The manufacturing process of an environmentally friendly halogen-free flame-retardant cable according to claim 4, characterized in that: The transmission assembly (8) comprises a rotating shaft (801) rotatably mounted inside the protective shell (7), one end of the rotating shaft (801) passes through the protective shell (7) and a driven gear (8011) is provided on the outer wall fixed sleeve, the tooth surface of the driven gear (8011) contacts the tooth surface of the driving gear (3021), a worm (8012) is provided on the upper fixed sleeve of the rotating shaft (801), a worm wheel (8021) is meshingly connected to the lower part of the worm (8012), and the worm wheel A transmission shaft (802) is fixedly provided at the center of (8021), and both ends of the transmission shaft (802) are rotatably connected to the inner wall of the protective shell (7). A mounting shaft (803) is provided parallel to the upper side of one end of the transmission shaft (802) away from the worm gear (8021), and a transmission gear (804) is fixedly provided on the outer wall of the mounting shaft (803) and the transmission shaft (802), and the two transmission gears (804) are connected in transmission via a second transmission chain (8041).

9. The manufacturing process of an environmentally friendly halogen-free flame-retardant cable according to claim 8, characterized in that: One end of the installation shaft (803) passes through the side wall of the protective shell (7) and is rotatably connected to the contacting wall body; a sliding rod (8031) is movably penetrated inside the installation shaft (803); the outer wall of the sliding rod (8031) is symmetrically provided with limiting slide rails; one end of the sliding rod (8031) is connected to a movable plate (8051); the other end of the sliding rod (8031) is integrally provided with a plug-in rod (8032); the plug-in rod (8032) matches the plug-in slot (6062) provided in the winding assembly (6); An electric telescopic cylinder (805) is provided between the two transmission gears (804); the telescopic end of the electric telescopic cylinder (805) is fixedly connected to the movable plate (8051), and the electric telescopic cylinder (805) is fixedly connected to the inner wall of the protective shell (7) via screws.

10. The manufacturing process of an environmentally friendly halogen-free flame-retardant cable according to claim 4, characterized in that: A mounting base (702) is welded to the bottom of the protective shell (7), a slider (703) is welded to the lower surface of the mounting base (702), a groove (201) is provided on the upper surface of the workbench (2) at a placement roller (604) provided in the winding assembly (6), a mounting slide groove (202) is provided on the workbench (2) at one side of the long side of the winding roller (3), the slider (703) matches the mounting slide groove (202), and ear plates are welded on both sides of the end surface of the slider (703) and fixedly connected to the workbench (2) by screws.

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