A mica tape wrapping machine for fire-resistant insulated cables

Abstract

The application relates to a mica tape wrapping machine for a fire-resistant insulated cable, which comprises a tape mounting disc and a wire core arranged on the mica tape wrapping machine, a traction roller for leading out the mica tape is arranged on the tape mounting disc, a dynamic adjusting structure for self-adapting adjustment of the mica tape tension is arranged on the tape mounting disc, and a driving adjusting structure for adjusting the dynamic adjusting structure is arranged on the tape mounting disc. The mica tape wrapping machine for the fire-resistant insulated cable quickly and coarsely adjusts the wrapping roller angle through the secondary adjusting rod, changes the mica tape winding path, finely adjusts the wrapping roller and the wrapping point spacing through the primary adjusting rod, the two cooperate to realize accurate control of the wrapping angle, when the tension fluctuates due to wind disturbance, the spring pushes the intermediate tension roller to displace in real time through the connecting block, the tension change is dynamically compensated, the tension roller, the traction roller and the wrapping roller form multi-point support, the mica tape is limited to shake, and the pitch drift problem caused by the wind disturbance is solved by using the double dimensions of passive compensation and active limiting.

Description

Technical Field

[0001] This invention relates to the field of fire-resistant insulated cable production technology, specifically to a mica tape wrapping machine for fire-resistant insulated cables. Background Technology

[0002] The production of fire-resistant insulated cables is a systematic manufacturing process centered around the two core properties of fire resistance and insulation, from raw material selection to finished product inspection. The production process includes conductor preparation, insulation extrusion, fire-resistant layer wrapping, cabling, inner sheath extrusion, armoring, outer sheath extrusion, finished product inspection and packaging, and other steps. Among them, fire-resistant layer wrapping involves wrapping fire-resistant materials, such as mica tape or ceramicized silicone rubber tape, around the insulation layer. The core equipment used in this process is the mica tape wrapping machine, which works by tightly wrapping the mica tape around the wire and cable with a high-speed rotating wrapping head.

[0003] In the existing technology, the mica tape wrapping machine consists of a wire feeding system, a wrapping system, a traction system and a wire take-up system. The wrapping system includes a wrapping reel, a wrapping head, a guide mechanism and a pressing device. The mica tape passes through the guide wheel of the guide mechanism and rests on the wrapping head. The wrapping head is driven to rotate by a motor, which drives the wrapping reel to rotate synchronously, thereby wrapping the mica tape around the wire core. In actual mica tape wrapping processing, when the wrapping head rotates at high speed, wind turbulence is generated. This wind causes the wrapping tape to tighten and loosen intermittently, leading to uncontrollable tension and unstable pitch in the wrapping result over time. Chinese invention patent CN115312275A discloses a wrapping machine head and cable wrapping machine that uses a turbulence baffle to create a turbulence cavity, thus preventing airflow within the cavity and avoiding the impact of wind turbulence on the mica tape. However, the angle of the turbulence baffle is fixed, directly... The limited wrapping angle results in several issues. For larger diameter conductors, the wrapping angle is too small, leading to a mismatch between the wrapping pitch and the conductor diameter. This causes the mica tape to be nearly parallel to the conductor, significantly reducing the overlap between adjacent wrapping layers and resulting in localized exposure. Conversely, for smaller diameter conductors, the wrapping angle is too large, causing a greater inclination of the mica tape. This makes the overlapping area of ​​the mica tape prone to wrinkling, leading to insufficient wrapping tightness. Therefore, a mica tape wrapping machine for fire-resistant insulated cables is proposed to address these problems. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a mica tape wrapping machine for fire-resistant insulated cables. It has the advantages of reducing the impact of wind turbulence and allowing for direct adjustment of the wrapping angle. This solves the problem of fixed angles of turbulence baffles, which directly limit the wrapping angle. When wrapping larger diameter conductors, the wrapping angle is too small, resulting in a mismatch between the wrapping pitch and the conductor diameter. This causes the mica tape to be almost parallel to the conductor, significantly reducing the overlap area of ​​adjacent wrapping layers and easily leading to localized exposure. Conversely, when wrapping smaller diameter conductors, the wrapping angle is too large, resulting in a large inclination of the mica tape. This causes wrinkling in the overlapping area of ​​the mica tape wrapping, leading to insufficient wrapping tightness.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a mica tape wrapping machine for fire-resistant insulated cables, comprising a wrapping mounting plate and a wire core disposed on the mica tape wrapping machine, wherein the wrapping mounting plate is provided with a traction roller for drawing out the mica tape, the wrapping mounting plate is provided with a dynamic adjustment structure for adaptively adjusting the tension of the mica tape, and the wrapping mounting plate is provided with an active adjustment structure for adjusting the dynamic adjustment structure; The dynamic adjustment structure includes a mounting frame fixedly mounted on the tape mounting plate. Three tension rollers distributed in a V-shape are rotatably mounted on the mounting frame. An elastic component for dynamically adjusting the position of the middle tension roller is provided on the mounting frame. A connecting frame is fixedly connected to the tension roller away from the tape mounting plate. An L-shaped frame is fixedly mounted on one end of the connecting frame. A wrapping head for winding mica tape is provided on the L-shaped frame. The wrapping head includes a connecting rod frame, and a wrapping roller is rotatably mounted on one end of the connecting rod frame near the wire core. A connecting column connected to an L-shaped frame is fixedly connected to the middle of the connecting rod frame. The active adjustment structure is connected to the L-shaped frame. The active adjustment structure includes a mounting platform fixedly connected to the tape mounting plate, a semi-wrapping frame fixedly mounted on the mounting platform, and a main adjustment rod for adjusting the distance between the wrapping roller and the wrapping point rotatably mounted on the semi-wrapping frame, and the main adjustment rod is threadedly connected to the L-shaped frame. An outer ring is fixedly installed on the L-shaped frame, and the connecting column is rotatably connected to the outer ring. A limit groove is opened on the L-shaped frame, and a limit block is slidably installed on the limit groove. A secondary adjusting rod for adjusting the angle of the wrapping roller is threadedly connected to the limit block, and the end of the secondary adjusting rod is hinged to the end of the connecting rod away from the mica belt.

[0006] Furthermore, a guide groove is provided inside the semi-enclosed frame, and a guide block is fixedly installed on the L-shaped frame, with the guide block slidably connected to the guide groove.

[0007] Furthermore, the mounting frame has a through groove, and the tension roller away from the tape mounting disc is slidably connected to the through groove.

[0008] Furthermore, the elastic component includes two connecting blocks that are rotatably connected to both ends of the intermediate tension roller, and the connecting blocks are slidably connected to the mounting frame. Each of the two connecting blocks has a guide post with one end penetrating through the mounting frame. Each of the two guide posts is fitted with a spring, and the spring is located between the connecting block and the mounting frame. The guide post is slidably connected to the mounting frame.

[0009] Furthermore, the mounting frame has two symmetrically distributed connecting grooves, and the tension roller in the middle is slidably connected to the connecting grooves.

[0010] Furthermore, the plane formed by the wrapping roller and the central axis of the wire core, and the plane formed by the wire core and the tension roller away from the wrapping tape mounting plate, have an angle of sixty degrees.

[0011] Compared with the prior art, the present invention provides a mica tape wrapping machine for fire-resistant insulated cables, which has the following beneficial effects: 1. This mica tape wrapping machine for fire-resistant insulated cables uses a secondary adjusting rod to drive the connecting rod frame to rotate around the connecting column, quickly coarsely adjusting the wrapping roller angle and changing the mica tape winding path to adapt to the initial adjustment of the wire core diameter. The main adjusting rod drives the L-shaped frame to move through the threaded transmission, finely adjusting the distance between the wrapping roller and the wrapping point. Combined with the coarse adjustment, it achieves precise control of the wrapping angle across the entire range. For large-diameter wire cores, the wrapping angle can be increased to avoid local exposure, while for small-diameter wire cores, the wrapping angle can be decreased to prevent wrinkling of the wrapping. 2. When the mica tape wrapping machine used for fire-resistant insulated cables causes tension fluctuations due to wind turbulence, the spring pushes the intermediate tension roller to move in real time through the connecting block, dynamically compensating for tension changes and avoiding tension loss of control. The tension roller, traction roller, and wrapping roller form multi-point support to limit the swaying of the mica tape. Thus, the problem of pitch drift caused by wind turbulence is solved by using both passive compensation and active limiting. 3. When the L-shaped frame of this mica tape wrapping machine for fire-resistant insulated cables moves, it simultaneously drives the wrapping head and the tension roller away from the wrapping tape mounting plate, so that the wrapping angle adjustment and tension adjustment are linked. This allows the mica tape tension to be reduced simultaneously when the wrapping angle is increased, or the mica tape tension to be increased simultaneously when the wrapping angle is decreased, avoiding parameter conflicts caused by individual adjustment. 4. This mica tape wrapping machine for fire-resistant insulated cables utilizes a 60-degree angle between the plane formed by the wrapping roller and the central axis of the wire core, and the plane formed by the tension roller away from the wrapping tape mounting plate. Combined with V-shaped tension rollers, this ensures a smooth conveying path of the mica tape from the tension roller to the wrapping point, reducing conveying resistance. Simultaneously, it ensures a reasonable inclination between the mica tape and the wire core, balancing wrapping overlap and bonding tension, preventing exposed or wrinkled mica tape during wrapping, and improving the consistency of wrapping quality. Attached Figure Description

[0012] Figure 1This is a schematic diagram of the novel structure proposed in this invention; Figure 2 This is a schematic diagram of the wrapping structure proposed in this invention; Figure 3 This is a schematic diagram of the dynamic adjustment structure proposed in this invention; Figure 4 This is a schematic diagram of the active adjustment structure of the wrapping structure proposed in this invention; Figure 5 Schematic diagram of the novel structure proposed in this invention Figure 4 Enlarged view of point A in the middle; Figure 6 Schematic diagram of the novel structure proposed in this invention Figure 1 Another schematic diagram of the state;

[0013] In the diagram: 1. Tape mounting plate; 2. Core wire; 3. Traction roller; 4. Dynamic adjustment structure; 41. Mounting frame; 411. Through groove; 412. Connecting groove; 42. Tension roller; 43. Elastic component; 431. Connecting block; 432. Guide column; 433. Spring; 44. Connecting frame; 45. L-shaped frame; 451. Guide block; 452. Outer ring; 453. Limiting groove; 454. Limiting block; 455. Secondary adjusting rod; 46. Wrapping head; 461. Connecting rod frame; 462. Wrapping roller; 463. Connecting column; 5. Active adjustment structure; 51. Mounting platform; 52. Semi-wrapping frame; 521. Guide groove; 53. Main adjusting rod. Detailed Implementation

[0014] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0015] Example 1: Please refer to Figure 1-6 This embodiment of a mica tape wrapping machine for fire-resistant insulated cables includes a wrapping mounting plate 1 and a wire core 2 disposed on the mica tape wrapping machine. The wrapping mounting plate 1 is provided with a traction roller 3 for drawing out the mica tape. The wrapping mounting plate 1 is provided with a dynamic adjustment structure 4 for adaptively adjusting the tension of the mica tape. The wrapping mounting plate 1 is provided with an active adjustment structure 5 for adjusting the dynamic adjustment structure 4.

[0016] Example 2: Please refer to Figure 1-6Based on Embodiment 1, a mica tape wrapping machine for fire-resistant insulated cables includes a dynamic adjustment structure 4 comprising a mounting frame 41 fixedly mounted on a wrapping tape mounting plate 1, three tension rollers 42 arranged in a V-shape rotatably mounted on the mounting frame 41, an elastic component 43 for dynamically adjusting the position of the middle tension roller 42 on the mounting frame 41, a connecting frame 44 fixedly connected to the tension roller 42 away from the wrapping tape mounting plate 1, an L-shaped frame 45 fixedly mounted at one end of the connecting frame 44, and a wrapping head 46 for wrapping mica tape on the L-shaped frame 45; The wrapping head 46 includes a connecting rod frame 461. A wrapping roller 462 is rotatably mounted on one end of the connecting rod frame 461 near the wire core 2. A connecting column 463 connected to the L-shaped frame 45 is fixedly connected to the middle of the connecting rod frame 461. The active adjustment structure 5 is connected to the L-shaped frame 45.

[0017] The active adjustment structure 5 includes a mounting platform 51 fixedly connected to the wrapping tape mounting plate 1. A semi-wrapping frame 52 is fixedly installed on the mounting platform 51. A main adjustment rod 53 for adjusting the distance between the wrapping roller 462 and the wrapping point is rotatably installed on the semi-wrapping frame 52. The main adjustment rod 53 is threadedly connected to the L-shaped frame 45. When the main adjustment rod 53 is rotated, the threaded transmission drives the L-shaped frame 45 to move linearly along the semi-wrapping frame 52. The L-shaped frame 45 drives the wrapping head 46 to move synchronously, changing the distance between the wrapping roller 462 and the wrapping point of the wire core 2, thereby finely adjusting the mica tape winding angle and providing a fine adjustment function for the mica tape wrapping angle.

[0018] It should be noted that an outer ring 452 is fixedly installed on the L-shaped frame 45, and the connecting column 463 is rotatably connected to the outer ring 452. A limit groove 453 is opened on the L-shaped frame 45, and a limit block 454 is slidably installed on the limit groove 453. A secondary adjusting rod 455 for adjusting the angle of the wrapping roller 462 is threadedly connected to the limit block 454. The end of the secondary adjusting rod 455 is hinged to the end of the connecting rod frame 461 away from the mica tape. When the secondary adjusting rod 455 is rotated, the secondary adjusting rod 455 moves axially, driving the connecting rod frame 461 to rotate around the central axis of the connecting column 463. The limit block 454 slides in the limit groove 453 of the L-shaped frame 45, limiting the rotation range of the connecting rod frame 461, and ultimately changing the angle of the wrapping roller 462. This coarsely adjusts the winding path of the mica tape, and then, in conjunction with fine-tuning the winding angle of the mica tape, achieves fine adjustment of the winding angle of the mica tape, ensuring the wrapping effect of the mica tape and the wire core 2.

[0019] In addition, a guide groove 521 is provided inside the semi-enclosed frame 52, and a guide block 451 is fixedly installed on the L-shaped frame 45. The guide block 451 is slidably connected to the guide groove 521. When the main adjusting rod 53 drives the L-shaped frame 45 to move along the semi-enclosed frame 52, the guide block 451 slides synchronously along the guide groove 521 to limit the lateral displacement of the L-shaped frame 45 and ensure the stability of the movement trajectory.

[0020] It should be noted that the mounting frame 41 has a through groove 411, and the tension roller 42, which is away from the tape mounting plate 1, is slidably connected to the through groove 411. When the L-shaped frame 45 drives the connecting frame 44 to move, the connecting frame 44 drives the tension roller 42, which is away from the tape mounting plate 1, to slide along the through groove 411. The through groove 411 restricts the movement direction of the tension roller 42 to prevent tilting or deviation.

[0021] Using the above technical solution, rotating the auxiliary adjusting rod 455 causes the auxiliary adjusting rod 455 on the limiting block 454 to move axially, and drives the connecting rod frame 461 to rotate around the central axis of the connecting column 463, thereby changing the angle of the wrapping roller 462, directly adjusting the winding path direction of the mica tape from the tension roller 42 to the wrapping point, and realizing the coarse adjustment of the wrapping angle. Rotating the main adjusting rod 53 causes the L-shaped frame 45 threaded on the main adjusting rod 53 to move along the semi-wrapping frame 52, so that the semi-wrapping frame 52 drives the wrapping head 46 to move synchronously, thereby changing the distance between the wrapping roller 462 and the mica tape wrapping point on the core 2. The change in distance will further fine adjust the winding angle of the mica tape, which, in conjunction with the coarse adjustment of the rotating auxiliary adjusting rod 455, realizes the fine adjustment of the wrapping angle. In addition, the moving L-shaped frame 45 drives the tension roller 42 away from the tape mounting plate 1 to move synchronously, thereby adjusting the distance between the intermediate tension roller 42 and the tension roller 42 away from the tape mounting plate 1, thereby changing the wrapping curvature and contact pressure of the mica tape on the three V-shaped distributed tension rollers 42. Therefore, if the mica tape wrapping angle decreases, the contact inclination between the mica tape and the surface of the wire core 2 decreases, and the winding direction is closer to the axial direction of the wire core 2. By adjusting the position of the tension roller 42 away from the wrapping mounting plate 1 through the main adjusting rod 53, the distance between the tension roller 42 away from the wrapping mounting plate 1 and the intermediate tension roller 42 is reduced, increasing the contact area and pressure between the mica tape and the tension roller 42, increasing friction to enhance the unwinding resistance, and avoiding insufficient mica tape tension and loose wrapping due to the reduced angle. If the mica tape wrapping angle increases, the contact inclination between the mica tape and the surface of the wire core 2 increases, and the winding direction is more biased towards the circumference of the wire core 2. While finely adjusting the angle of the wrapping roller 462 through the auxiliary adjusting rod 455, the L-shaped frame 45 is moved by the main adjusting rod 53 to increase the distance between the tension roller 42 away from the wrapping mounting plate 1 and the intermediate tension roller 42, so that the contact area between the mica tape and the tension roller 42 decreases, the pressure decreases, the friction decreases, and the unwinding resistance is reduced, which can prevent the mica tape from breaking or deforming due to excessive stretching.

[0022] Example 3: Please refer to Figure 1-6Based on Embodiment 2, a mica tape wrapping machine for fire-resistant insulated cables includes an elastic component 43 comprising two connecting blocks 431 rotatably connected to both ends of an intermediate tension roller 42, and the connecting blocks 431 being slidably connected to an mounting frame 41. Each connecting block 431 has a guide post 432 fixedly mounted on it, with one end penetrating the mounting frame 41. Each guide post 432 is fitted with a spring 433, which is located between the connecting blocks 431 and the mounting frame 41. When wind turbulence causes an increase in the tension of the mica tape, the mica tape pulls the intermediate tension roller 42, causing the connecting blocks 431 to compress the springs 433. When the tension decreases, the springs 433 elastically reset, pushing the connecting blocks 431 to displace the intermediate tension roller 42, thus compensating for tension fluctuations.

[0023] The mounting frame 41 has two symmetrically distributed connecting grooves 412, and the middle tension roller 42 is slidably connected to the connecting groove 412. When the connecting block 431 of the elastic component 43 drives the middle tension roller 42 to move, the middle tension roller 42 slides along the connecting groove 412. The connecting groove 412 restricts its lateral displacement to ensure accurate displacement trajectory.

[0024] It should be noted that the plane formed by the wrapping roller 462 and the central axis of the wire core 2, and the plane formed by the wire core 2 and the tension roller 42 away from the wrapping installation plate 1, are at an angle of 60 degrees. By setting the plane angle of 60 degrees, the mica tape can be output from the tension roller 42 and fit onto the wrapping roller 462 and wrap around the wire core 2 in the optimal path, thus balancing the conveying resistance, overlap rate and bonding tension.

[0025] Using the above technical solution, when the wrapping roller 462 drives the mica tape to wrap the wire core 2, the wind turbulence causes tension fluctuations in the mica tape. The elastic component 43 pushes the tension roller 42 to compensate for displacement in real time. Furthermore, the traction roller 3, together with the three V-shaped distributed tension rollers 42 and the wrapping roller 462, provides multi-point support for the mica tape, further limiting the swaying of the mica tape and avoiding pitch drift caused by the wind turbulence affecting the wrapping of the mica tape.

[0026] The working principle of the above embodiments is as follows: When using the mica tape wrapping machine for fire-resistant insulated cables, rotating the auxiliary adjusting rod 455 causes the auxiliary adjusting rod 455 on the limit block 454 to move axially, and drives the connecting rod frame 461 to rotate around the central axis of the connecting column 463, thereby changing the angle of the wrapping roller 462 and directly adjusting the winding path direction of the mica tape from the tension roller 42 to the wrapping point, thus achieving coarse adjustment of the wrapping angle. Rotating the main adjusting rod 53 causes the L-shaped frame 45 threaded on the main adjusting rod 53 to move along the semi-wrapping frame 52, which in turn causes the semi-wrapping frame 52 to drive the wrapping head 46 to move synchronously, thereby changing the distance between the wrapping roller 462 and the mica tape wrapping point on the core 2. The change in distance will further fine-tune the winding angle of the mica tape, which, in conjunction with the coarse adjustment of the rotating auxiliary adjusting rod 455, achieves fine adjustment of the wrapping angle. The moving L-shaped frame 45 drives the tension roller 42 away from the tape mounting plate 1 to move synchronously, thereby adjusting the distance between the intermediate tension roller 42 and the tension roller 42 away from the tape mounting plate 1, thus changing the wrapping arc and contact pressure of the mica tape on the three V-shaped distributed tension rollers 42. When the spacing increases, the contact area between the mica belt and the tension roller 42 decreases, the pressure decreases, the friction decreases, the belt feeding resistance weakens, and the feeding speed increases. When the spacing decreases, the contact area between the mica belt and the tension roller 42 increases, the pressure increases, the friction increases, the belt unloading resistance increases, and the unloading speed decreases. If the mica tape wrapping angle decreases, the contact inclination between the mica tape and the surface of the wire core 2 decreases, and the winding direction is closer to the axis of the wire core 2. The position of the tension roller 42 away from the wrapping mounting plate 1 is adjusted by the main adjusting rod 53, thereby reducing the distance between the tension roller 42 away from the wrapping mounting plate 1 and the middle tension roller 42, increasing the contact area and pressure between the mica tape and the tension roller 42, and increasing the friction to enhance the tape release resistance, thus avoiding insufficient mica tape tension and loose wrapping due to the decrease in angle. If the mica tape wrapping angle increases, the contact inclination between the mica tape and the surface of the wire core 2 increases, and the winding direction is more biased towards the circumference of the wire core 2. While the angle of the wrapping roller 462 is finely adjusted by the auxiliary adjusting rod 455, the L-shaped frame 45 is moved by the main adjusting rod 53 to increase the distance between the tension roller 42 away from the wrapping installation plate 1 and the middle tension roller 42. This reduces the contact area between the mica tape and the tension roller 42, lowers the pressure, weakens the friction, and reduces the tape release resistance, which can prevent the mica tape from breaking or deforming due to excessive stretching. When the wrapping roller 462 drives the mica tape to wrap the wire core 2, the wind turbulence causes tension fluctuations in the mica tape. The elastic component 43 pushes the tension roller 42 to compensate for displacement in real time. Furthermore, the traction roller 3, together with the three V-shaped distributed tension rollers 42 and the wrapping roller 462, provides multi-point support for the mica tape, further limiting the swaying of the mica tape and preventing pitch drift caused by the wind turbulence affecting the wrapping of the mica tape.

[0027] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0028] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A mica tape wrapping machine for fire resistant insulated cables comprising a tape mounting disc (1) and a core (2) provided on the mica tape wrapping machine, characterized in that: The tape mounting plate (1) is provided with a traction roller (3) for drawing out the mica tape, the tape mounting plate (1) is provided with a dynamic adjustment structure (4) for adaptively adjusting the tension of the mica tape, and the tape mounting plate (1) is provided with an active adjustment structure (5) for adjusting the dynamic adjustment structure (4). The dynamic adjustment structure (4) includes a mounting frame (41) fixedly mounted on the tape mounting plate (1). Three tension rollers (42) arranged in a V-shape are rotatably mounted on the mounting frame (41). An elastic component (43) for dynamically adjusting the position of the middle tension roller (42) is provided on the mounting frame (41). A connecting frame (44) is fixedly connected to the tension roller (42) away from the tape mounting plate (1). An L-shaped frame (45) is fixedly mounted at one end of the connecting frame (44). A wrapping head (46) for winding mica tape is provided on the L-shaped frame (45). The wrapping head (46) includes a connecting rod frame (461), and a wrapping roller (462) is rotatably installed at one end of the connecting rod frame (461) near the wire core. A connecting column (463) connected to the L-shaped frame (45) is fixedly connected to the middle of the connecting rod frame (461). The active adjustment structure (5) is connected to the L-shaped frame (45). The active adjustment structure (5) includes a mounting platform (51) fixedly connected to the tape mounting plate (1), a semi-wrapping frame (52) fixedly mounted on the mounting platform (51), a main adjustment rod (53) for adjusting the distance between the wrapping roller (462) and the wrapping point is rotatably mounted on the semi-wrapping frame (52), and the main adjustment rod (53) is threadedly connected to the L-shaped frame (45); An outer ring (452) is fixedly installed on the L-shaped frame (45), and the connecting column (463) is rotatably connected to the outer ring (452). A limit groove (453) is opened on the L-shaped frame (45), and a limit block (454) is slidably installed on the limit groove (453). A secondary adjusting rod (455) for adjusting the angle of the wrapping roller (462) is threadedly connected to the limit block (454), and the end of the secondary adjusting rod (455) is hinged to the end of the connecting rod frame (461) away from the mica belt.

2. A mica tape wrapping machine for fire resistant insulated cables according to claim 1, characterized in that: The semi-enclosed frame (52) has a guide groove (521) inside, and a guide block (451) is fixedly installed on the L-shaped frame (45), and the guide block (451) is slidably connected to the guide groove (521).

3. A mica tape wrapping machine for fire-resistant insulated cables according to claim 2, characterized in that: The mounting frame (41) has a through groove (411), and the tension roller (42) away from the tape mounting plate (1) is slidably connected to the through groove (411).

4. A mica tape wrapping machine for fire-resistant insulated cables according to claim 1, characterized in that: The elastic component (43) includes two connecting blocks (431) that are rotatably connected to both ends of the intermediate tension roller (42), and the connecting blocks (431) are slidably connected to the mounting frame (41). Each of the two connecting blocks (431) has a guide post (432) with one end penetrating through the mounting frame (41) fixedly installed on it. Each of the two guide posts (432) is fitted with a spring (433), and the spring (433) is located between the connecting block (431) and the mounting frame (41). The guide post (432) is slidably connected to the mounting frame (41).

5. A mica tape wrapping machine for fire-resistant insulated cables according to claim 4, characterized in that: The mounting frame (41) has two connecting grooves (412) that are symmetrically distributed vertically, and the tension roller (42) in the middle is slidably connected to the connecting groove (412).

6. A mica tape wrapping machine for fire-resistant insulated cables according to claim 1, characterized in that: The plane formed by the wrapping roller (462) and the central axis of the wire core (2), and the plane formed by the wire core (2) and the tension roller (42) far away from the wrapping tape mounting plate (1), have an angle of 60 degrees.

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