Automatic deviation rectifying and coating equipment for cable insulation layer

Abstract

The present application belongs to the technical field of automatic deviation rectifying and coating equipment for cable insulation layer, and particularly relates to an automatic deviation rectifying and coating equipment for cable insulation layer, which comprises a screw extruder and a control cabinet installed at one end of the screw extruder, and a coating extruder head installed at the other end of the screw extruder away from the control cabinet. Through cooperation between the first annular block, the second annular block and the sleeve, the screw extruder sends the molten insulation material into the coating extruder head after heating and melting, and while the cable core passes through the coating extruder head, the molten insulation material uniformly coats the surface of the core. The core with the coated insulation layer then enters the inside of the sleeve and passes through the sleeve into the cooling tank to complete the cooling and setting of the hot-melt insulation layer. The sleeve can effectively block external airflow, prevent the insulation layer between the coating extruder head and the cooling tank from being deformed due to airflow disturbance in the hot-melt and non-solidified state, avoid the generation of eccentric and oval defects of the insulation layer, and ensure the stable quality of the cable insulation forming.

Description

Technical Field

[0001] This invention belongs to the technical field of automatic cable insulation layer correction and coating equipment, specifically relating to an automatic cable insulation layer correction and coating equipment. Background Technology

[0002] The automatic insulation layer correction and coating equipment for cables is a core unit of an automated production line in the wire and cable manufacturing industry. It is used to uniformly coat the outer surface of the wire core with insulating materials (mainly polymers such as plastics and rubber) and correct core misalignment and insulation layer eccentricity in real time. It integrates extrusion molding, automatic control, precision testing, and dynamic correction technologies to achieve precise control of the insulation layer's concentricity. This completely solves the quality defects such as insulation layer eccentricity and ellipticity caused by factors such as core vibration and gravity settling in traditional coating processes, ensuring that the electrical and mechanical properties of the cable meet national standards.

[0003] During the use of automatic cable insulation layer correction and wrapping equipment, there is a lack of dedicated protection mechanism in the transition area after the cable insulation layer is wrapped on the surface of the core and enters the cold water bath for shaping. The insulation layer that has just been extruded in a hot melt state has not yet been cured and shaped, and still has a certain degree of fluidity. Under the influence of external airflow, the insulation layer will produce defects such as uneven local thermal shrinkage, overall elliptical deformation, and insulation eccentricity, which will damage the circumferential uniformity and regularity of the insulation layer, reduce the concentricity of the insulation, and thus seriously affect the forming quality of cable insulation. Summary of the Invention

[0004] The purpose of this invention is to provide an automatic cable insulation layer correction and wrapping device, which aims to solve the problem that existing automatic cable insulation layer correction and wrapping devices lack a dedicated protection mechanism in the transition area between the cable insulation layer being wrapped on the core surface and entering the cold water bath for shaping. The newly extruded hot-melt insulation layer has not yet solidified and still has a certain degree of fluidity. Under the influence of external airflow, the insulation layer will produce defects such as uneven local thermal shrinkage, overall elliptical deformation, and insulation eccentricity, which will damage the circumferential uniformity and regularity of the insulation layer, reduce the concentricity of the insulation, and thus seriously affect the quality of cable insulation forming.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an automatic cable insulation layer correction and coating device, comprising a screw extruder and a control cabinet installed at one end of the screw extruder, a coating extruder head installed at the other end of the screw extruder away from the control cabinet, a first support platform placed on the left side of the coating extruder head, a correction mechanism mounted on the top of the first support platform, a second support platform placed between the coating extruder head and the first support platform, guide rollers mounted at equal intervals on the top of the second support platform, a third support platform placed on the right side of the coating extruder head, a cooling tank mounted on the top of the third support platform, a first annular block mounted on the side wall of the cooling tank near the coating extruder head, a second annular block mounted on the side wall of the coating extruder head near the cooling tank, a sleeve provided between the first and second annular blocks, and third annular blocks mounted on both ends of the sleeve.

[0006] As a preferred embodiment of the automatic cable insulation layer correction and coating device of the present invention, the correction mechanism includes a mounting frame, a support block, a connecting plate, a correction roller, a connecting block, an electric rod, a connecting rod, and a sensor. The mounting frame is erected on the top of a first support platform, the support block is installed inside the mounting frame, the connecting plate is rotatably connected to the top of the support block, the correction roller is rotatably connected to the inside of the connecting plate, the connecting block is fixedly connected to the rotating column surface of the connecting plate, the electric rod is installed on the inner wall of the mounting frame, the connecting rod is connected to the telescopic end of the electric rod, and the connecting rod is rotatably connected to the inside of the connecting block.

[0007] In a preferred embodiment of the automatic cable insulation layer correction and wrapping device of the present invention, the sleeve is made of metal and includes, but is not limited to, circular, rectangular and conical shapes. The sleeve is rotatably connected between the first annular block and the second annular block via a third annular block.

[0008] In a preferred embodiment of the automatic cable insulation layer correction and coating device of the present invention, the inner wall of the sleeve is provided with a placement groove, the inside of the placement groove is provided with a C-shaped mounting plate, the inside of the C-shaped mounting plate is rotatably connected to an extrusion rod, the surface of the sleeve is threadedly connected to a threaded rod, the surface of the sleeve is threadedly connected to a guide rod, the surface of the sleeve is welded with a driven gear, and a servo motor is installed on the side wall of the cooling tank near the coating extruder head, the output shaft of the servo motor is fixedly mounted with a drive gear.

[0009] In a preferred embodiment of the automatic cable insulation layer correction and coating device of the present invention, the extrusion rod is connected to the sleeve via an inverted mounting plate, a threaded rod, and a guide rod to form a threaded lifting connection.

[0010] In a preferred embodiment of the automatic cable insulation layer correction and coating device of the present invention, the end of the extrusion rod near the second annular block is set as conical, and the extrusion rod is made of metal.

[0011] As a preferred embodiment of the automatic deviation-correcting insulating layer cladding equipment for cables according to the present invention, the sleeve is linked between the first annular block and the second annular block through the driven gear, the servo motor and the driving gear.

[0012] As a preferred embodiment of the automatic deviation-correcting insulating layer cladding equipment for cables according to the present invention, the tooth spaces of the driven gear and the driving gear are meshed with each other.

[0013] As a preferred embodiment of the automatic deviation-correcting insulating layer cladding equipment for cables according to the present invention, the screw extruder is longitudinally provided with an air cylinder at the bottom end of the cladding extrusion head; the telescopic end of the air cylinder is rotatably connected with an abutting block, and the top end of the abutting block is provided with a rectangular block; the screw extruder is rotatably connected with a support plate at the bottom end of the cladding extrusion head, the top end of the support plate is provided with a cooling fan, and the bottom end of the support plate is provided with two symmetric sliding grooves; the inside of the sliding grooves is slidably connected with sliding blocks, the sliding blocks are connected with the rectangular block, and the sliding blocks are matched with the sliding grooves and are in a convex shape.

[0014] As a preferred embodiment of the automatic deviation-correcting insulating layer cladding equipment for cables according to the present invention, the support plate forms a flip connection with the screw extruder through the air cylinder, the abutting block, the rectangular block, the sliding grooves and the sliding blocks.

[0015] Compared with the prior art, the beneficial effects of the present invention are: Through the cooperation among the first annular block, the second annular block and the sleeve, the screw extruder heats and melts the insulating material and then feeds it into the cladding extrusion head. When the cable core passes through the cladding extrusion head, the molten insulating material is uniformly cladded on the surface of the cable core. The core cladded with the insulating layer then enters the sleeve, passes through the sleeve and enters the cooling tank to complete the cooling and shaping of the hot-melt insulating layer. The sleeve can effectively block the blowing of external air flow, prevent the insulating layer in a hot-melt and uncured state between the cladding extrusion head and the cooling tank from deforming due to air flow disturbance, avoid the generation of eccentricity and ellipticity defects of the insulating layer, and ensure the stable molding quality of the cable insulation.

[0016] Through the cooperation of the first annular block, the second annular block, the sleeve, the placement groove, the C-shaped mounting plate, the extrusion rod, the threaded rod, the guide rod, the driven gear, the servo motor, the driving gear, and the third annular block, the vertical position of the extrusion rod can be adjusted according to the actual covering thickness of the cable insulation layer. The operator rotates the threaded rod, causing it to move downward inside the sleeve, thereby driving the C-shaped mounting plate to descend. At the same time, the C-shaped mounting plate descends smoothly under the guidance of the guide rod. Subsequently, the C-shaped mounting plate synchronously drives the extrusion rod downward until the extrusion rod is in contact with the outer surface of the wire core covered with the insulation layer. Then, the servo motor is started using the control cabinet. At this time, the servo motor outputs... The output shaft drives the drive gear to rotate, which in turn drives the driven gear to rotate. The driven gear then drives the entire sleeve to rotate, causing the sleeve to rotate between the first and second annular blocks via the third annular block. The sleeve then drives the extrusion rod to rotate circumferentially around the core axis, thereby covering the insulation layer between the extruder head and the cooling tank in a hot-melt, uncured state. Due to its own gravity, the insulation layer will sink vertically downwards and undergo elliptical deformation. The extrusion rod continues to rotate around the core axis, uniformly extruding and straightening the hot-melt, uncured insulation layer, correcting the insulation layer deformed by gravity into a standard circular cross-section, thus ensuring the stable quality of cable insulation forming.

[0017] Through the cooperation of the cylinder, docking block, rectangular block, support plate, slide groove, slider, and cooling fan, the cylinder's extension end can push the docking block to move. At this time, the docking block drives the rectangular block to move. Then, the rectangular block drives the slider to slide along the slide groove. Then, the rectangular block pushes the support plate to rotate. As the cylinder continues to extend, it pushes the support plate to parallel. Then, the cooling fan is started by the control cabinet. The upward airflow of the cooling fan blows away the dust attached to the wire core, preventing it from entering the extrusion head. Dust can affect the insulation layer coating, thus producing impurities that affect the coating quality. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a bottom view of the extruder structure of the present invention; Figure 3 This is a schematic diagram of the installation structure of the correction mechanism, guide roller, and cooling tank of the present invention; Figure 4 This is a cross-sectional view of the sleeve structure of the present invention; Figure 5 This is a schematic cross-sectional view of the correction mechanism of the present invention; Figure 6 For the present invention Figure 2A magnified structural diagram at point A in the diagram.

[0019] In the diagram: 1. Screw extruder; 2. Control cabinet; 3. Overlapping extruder head; 4. First support platform; 5. Correction mechanism; 51. Mounting frame; 52. Support block; 53. Connecting plate; 54. Correction roller; 55. Connecting block; 56. Electric rod; 57. Connecting rod; 58. Sensor; 6. Second support platform; 7. Guide roller; 8. Third support platform; 9. Cooling tank; 10. First annular block; 11. Second annular block; 12. Sleeve; 13. Placement groove; 14. C-shaped mounting plate; 15. Extrusion rod; 16. Threaded rod; 17. Guide rod; 18. Driven gear; 19. Servo motor; 20. Drive gear; 21. Third annular block; 22. Cylinder; 23. Connecting block; 24. Rectangular block; 25. Support plate; 26. Slide groove; 27. Slider; 28. Cooling fan. Detailed Implementation

[0020] 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.

[0021] Please see Figures 1-6This invention provides the following technical solution: an automatic cable insulation layer correction and coating device, comprising a screw extruder 1 and a control cabinet 2 installed at one end of the screw extruder 1. The screw extruder 1 is a single-screw extruder of model SJ-45×20. The cable insulation layer material is fed into the screw extruder 1 through the feed hopper, then pushed forward by the screw, and hot-melted onto the inner wall of the coating extruder head 3. Subsequently, a PLC controller is installed in the control cabinet 2 to facilitate the automatic start-up of various electrical components. The other end of the screw extruder 1 away from the control cabinet 2 is equipped with the coating extruder head 3, which is used to store the cable insulation layer and, after the wire core passes through, hot-melts it onto the surface of the wire core to achieve coating. A first support platform 4 is placed on the left side of the coating extruder head 3. The first support platform 4 supports the correction mechanism 5, so that the wire core is coaxial with the coating extruder head 3 on the correction mechanism 5. The correction mechanism 5 is mounted on the top of the first support platform 4. The correction mechanism 5 is used to correct the deviation of the wire core feeding and ensure coaxial feeding. A second support platform 6 is placed between the coating extruder head 3 and the first support platform 4. The second support platform 6 supports the guide rollers 7, so that the wire core is coaxial with the coating extruder head 3 on the guide rollers 7. The guide rollers 7 are mounted at equal intervals on the top of the second support platform 6. The guide rollers 7 facilitate the feeding of the wire core. A third support platform 8 is placed on the right side of the coating extruder head 3. The three support platforms 8 support the cooling tank 9, allowing the insulation-coated wire core to be coaxial with the extrusion head 3 on the cooling tank 9. The cooling tank 9 is mounted on the top of the third support platform 8, and the coaxial position of the extrusion head 3 is used to cool and shape the insulation layer in its uncured state. A first annular block 10 is installed on the side wall of the cooling tank 9 near the extrusion head 3, facilitating the fixing of the sleeve 12 to one end of the first annular block 10 via the third annular block 21. A second annular block 11 is installed on the side wall of the extrusion head 3 near the cooling tank 9, facilitating the fixing of the sleeve 12 to the other end of the second annular block 11 via the third annular block 21. A sleeve is provided between the first annular block 10 and the second annular block 11. 12. Sleeve 12 is used to block external airflow and prevent the insulation layer between the extruder head 3 and the cooling tank 9 from being deformed due to airflow disturbance. At the same time, the rotation of sleeve 12 can drive the internal extrusion rod 15 to rotate around the core axis, and uniformly extrude and straighten the insulation layer in the hot melt uncured state, correcting the insulation layer deformed due to gravity to a standard circular cross section, thereby ensuring the stable quality of cable insulation forming. Sleeve 12 can be observed from one end of the cooling tank 9 to determine the descent state of extrusion rod 15. The two ends of sleeve 12 are equipped with third annular blocks 21, which facilitate the connection of sleeve 12 between the first annular block 10 and the second annular block 11.

[0022] Preferably, the correction mechanism 5 includes a mounting frame 51, a support block 52, a connecting plate 53, a correction roller 54, a connecting block 55, an electric rod 56, a connecting rod 57, and a sensor 58. The mounting frame 51 is mounted on the top of the first support platform 4. The support block 52 is installed inside the mounting frame 51. The connecting plate 53 is rotatably connected to the top of the support block 52. The correction roller 54 is rotatably connected to the inside of the connecting plate 53. The connecting block 55 is fixedly connected to the rotating column surface of the connecting plate 53. The electric rod 56 is installed on the inner wall of the mounting frame 51. The connecting rod 57 is connected to the telescopic end of the electric rod 56 and is rotatably connected inside the connecting block 55.

[0023] In practical use, the wire core is continuously fed out by the wire feeding equipment, laid on the correction roller 54, and then guided and conveyed by the guide roller 7. Subsequently, the wire core passes through the coating extruder head 3 to complete the insulation layer coating. After insulation coating, the wire core passes through the sleeve 12 and is cooled and shaped by the cooling tank 9. Finally, it is wound into the winding equipment to complete the winding operation. When the correction mechanism 5 is running, the electric rod 56 starts and drives the piston rod to extend and retract. The piston rod drives the connecting rod 57 to move linearly back and forth. The connecting rod 57 drives the connecting block 55 to swing axially around the bottom rotating column of the connecting plate 53. The connecting block 55 then drives the connecting plate 53 to swing. The connecting plate 53 synchronously drives the correction roller 54 to swing and adjust, correcting the position of the wire core that has deviated. The sensor 58 senses the wire core deviation status in real time and controls the extension and retraction of the electric rod 56 according to the detection signal, thereby controlling the swing direction of the correction roller 54 and realizing real-time dynamic correction of the wire core.

[0024] Preferably, the sleeve 12 is made of metal and includes, but is not limited to, circular, rectangular and conical shapes. The sleeve 12 is rotatably connected between the first annular block 10 and the second annular block 11 via the third annular block 21.

[0025] In practical use, the rotation of the sleeve 12 facilitates the gear linkage between the driven gear 18 and the driving gear 20. The heat generated by the heat-fused insulation layer is contained within the sleeve 12, and the flow of external air can dissipate heat from the sleeve 12, preventing heat damage caused by the sleeve 12 being in a high-temperature state for a long time.

[0026] Preferably, the inner wall of the sleeve 12 is provided with a placement groove 13, the inside of the placement groove 13 is provided with a C-shaped mounting plate 14, the inside of the C-shaped mounting plate 14 is rotatably connected to an extrusion rod 15, the surface of the sleeve 12 is threadedly connected to a threaded rod 16, the surface of the sleeve 12 is threadedly connected to a guide rod 17, the surface of the sleeve 12 is welded with a driven gear 18, the cooling tank 9 is installed on the side wall near the extruder head 3 with a servo motor 19, and the output shaft of the servo motor 19 is fixedly installed with a drive gear 20.

[0027] In practical use, the placement groove 13, the C-shaped mounting plate 14, the extrusion rod 15, the threaded rod 16 and the guide rod 17 are symmetrically installed inside the sleeve 12. During use, the operator only needs to operate one set of extrusion rods 15 to fit with the wire core. After one set of extrusion rods 15 is damaged, the other set of extrusion rods 15 can also be operated to fit with the wire core. At the same time, both sets of extrusion rods 15 can be operated to fit with the wire core simultaneously.

[0028] Preferably, the extrusion rod 15 is connected to the sleeve 12 via the C-shaped mounting plate 14, the threaded rod 16 and the guide rod 17 to form a threaded lifting connection.

[0029] In practical use, the operator rotates the threaded rod 16 to move it downward inside the sleeve 12, thereby driving the C-shaped mounting plate 14 to descend. At the same time, the C-shaped mounting plate 14 descends smoothly under the guidance of the guide rod 17. Subsequently, the C-shaped mounting plate 14 synchronously drives the pressing rod 15 to descend until the pressing rod 15 is in contact with the outer surface of the wire core covered with the insulation layer, thereby greatly improving the convenience of adjusting the pressing rod 15.

[0030] Preferably, the end of the extrusion rod 15 near the second annular block 11 is tapered, and the extrusion rod 15 is made of metal.

[0031] In practical use, the tapered end of the extrusion rod 15 is the entry end of the wire core covered with the insulation layer. In this way, the entry end is larger than the exit end. If the insulation layer in the uncured state of hot melting is affected by gravity and sinks, it will not be blocked by the end of the extrusion rod 15, thus ensuring the stability of the correction of the insulation layer deformed by gravity. The extrusion rod 15 is made of metal to avoid the insulation layer in the uncured state of hot melting affecting the extrusion rod 15 and causing damage, thereby greatly improving the durability of the extrusion rod 15.

[0032] Preferably, the sleeve 12 is driven between the first annular block 10 and the second annular block 11 by a driven gear 18, a servo motor 19 and a driving gear 20.

[0033] In practical use, the servo motor 19 starts its output shaft to drive the drive gear 20 to rotate. The drive gear 20 meshes with and drives the driven gear 18 to rotate. The driven gear 18 drives the sleeve 12 to rotate as a whole, so that the sleeve 12 rotates between the first annular block 10 and the second annular block 11 through the third annular block 21, which facilitates the rotation of the sleeve 12.

[0034] Preferably, the tooth pitches of the driven gear 18 and the driving gear 20 are meshed.

[0035] In practical use, when the driving gear 20 rotates, it can mesh with the driven gear 18 to rotate, thereby making the driven gear 18 rotate synchronously.

[0036] Preferably: the screw extruder 1 is located at the bottom end of the coating extrusion head 3, and an air cylinder 22 is vertically installed, the telescopic end of the air cylinder 22 is rotatably connected with an abutment block 23, a rectangular block 24 is installed at the top end of the abutment block 23, the screw extruder 1 is located at the bottom end of the coating extrusion head 3 and is rotatably connected with a support plate 25, a cooling fan 28 is installed at the top end of the support plate 25, two symmetric sliding grooves 26 are provided at the bottom end of the support plate 25, a sliding block 27 is slidably connected inside the sliding groove 26, the sliding block 27 is connected with the rectangular block 24, and the sliding block 27 is in a "convex" shape adapted to the sliding groove 26.

[0037] In specific use, the sliding groove 26 and the sliding block 27 are adapted to each other in a "convex" shape, which ensures the connection stability between the sliding groove 26 and the sliding block 27.

[0038] Preferably: the support plate 25 forms a flip connection with the screw extruder 1 through the air cylinder 22, the abutment block 23, the rectangular block 24, the sliding groove 26 and the sliding block 27.

[0039] In specific use, the extension of the telescopic end of the air cylinder 22 can push the abutment block 23 to move, at this time, the abutment block 23 drives the rectangular block 24 to move, then the rectangular block 24 drives the sliding block 27 to slide along the sliding groove 26, then the rectangular block 24 pushes the support plate 25 to rotate, with the continuous extension of the air cylinder 22, the support plate 25 is pushed to a parallel position, thereby facilitating the operation of the cooling fan 28.

[0040] Working principle: First, the external air supply device for cylinder 22 is activated, and the telescopic end of cylinder 22 extends and pushes the docking block 23 to move. The docking block 23 drives the rectangular block 24 to move synchronously. The rectangular block 24 drives the slider 27 to slide along the guide groove 26 and pushes the support plate 25 to rotate. As cylinder 22 continues to extend, the support plate 25 is pushed to a horizontal parallel position. Then, the cooling fan 28 is activated through the control cabinet 2. The cooling fan 28 blows air upward to disperse and clean the dust attached to the surface of the wire core, preventing dust from entering the inside of the extrusion head 3 and mixing into the insulating material, causing impurities and defects. Then, based on... Based on the actual insulation thickness of the cable, the position of the extrusion rod 15 can be adjusted. The operator rotates the threaded rod 16, causing it to move downward inside the sleeve 12, thereby driving the C-shaped mounting plate 14 to descend smoothly along the guide rod 17. The C-shaped mounting plate 14 simultaneously drives the extrusion rod 15 to descend until the extrusion rod 15 is tightly fitted against the outer surface of the insulation core. Then, the servo motor 19 is started through the control cabinet 2. The output shaft of the servo motor 19 drives the drive gear 20 to rotate. The drive gear 20 meshes with and drives the driven gear 18 to rotate. The driven gear 18 drives the sleeve 12 to rotate as a whole. The sleeve 12 passes through... The third annular block 21 rotates between the first annular block 10 and the second annular block 11. Then, insulating material is fed into the screw extruder 1 through the feed hopper, conveyed forward by the screw, and heated to melt. The molten insulating material is conveyed into the coating extruder head 3. The wire core is continuously fed out by the unwinding device, rests on the straightening roller 54, and is guided and conveyed sequentially by the guide roller 7 before entering the coating extruder head 3. The molten insulating material evenly coats the surface of the wire core to form an insulating layer. The insulated wire core passes through the sleeve 12 and then enters the cooling tank 9 for cooling and shaping. Finally, it is wound onto the winding device to complete the winding. Then, the sleeve 12 can effectively prevent… The external airflow prevents the uncured insulation layer between the extruder head 3 and the cooling tank 9 from being disturbed and deformed, thus preventing insulation eccentricity and elliptical deformation defects. At the same time, the sleeve 12 drives the extrusion rod 15 to rotate around the core axis. The insulation layer between the extruder head 3 and the cooling tank 9 is in a state of uncured heat fusion. Under its own gravity, it is prone to elliptical deformation as it sinks vertically downward. The extrusion rod 15 continues to rotate around the core axis, uniformly extruding and straightening the soft insulation layer, correcting the insulation layer deformed by gravity settlement into a standard circular cross section, further ensuring the stability of the cable insulation forming quality.

[0041] Finally, it should be noted that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An automatic cable insulation layer correction and coating device, comprising a screw extruder (1) and a control cabinet (2) installed at one end of the screw extruder (1), characterized in that: The screw extruder (1) is equipped with a coated extruder head (3) at the other end away from the control cabinet (2). A first support platform (4) is placed on the left side of the coated extruder head (3). A correction mechanism (5) is installed on the top of the first support platform (4). A second support platform (6) is placed between the coated extruder head (3) and the first support platform (4). Guide rollers (7) are installed at equal intervals on the top of the second support platform (6). A third support platform (8) is placed on the right side of the coated extruder head (3). A cooling tank (9) is installed on the top of the third support platform (8). A first annular block (10) is installed on the side wall of the cooling tank (9) near the coated extruder head (3). A second annular block (11) is installed on the side wall of the coated extruder head (3) near the cooling tank (9). A sleeve (12) is provided between the first annular block (10) and the second annular block (11). A third annular block (21) is installed at both ends of the sleeve (12).

2. The automatic cable insulation layer correction and wrapping device according to claim 1, characterized in that: The correction mechanism (5) includes a mounting frame (51), a support block (52), a connecting plate (53), a correction roller (54), a connecting block (55), an electric rod (56), a connecting rod (57), and a sensor (58). The mounting frame (51) is mounted on the top of the first support platform (4). The support block (52) is installed inside the mounting frame (51). The connecting plate (53) is rotatably connected to the top of the support block (52). The correction roller (54) is rotatably connected inside the connecting plate (53). The connecting block (55) is fixedly connected to the rotating column surface of the connecting plate (53). The electric rod (56) is installed on the inner wall of the mounting frame (51). The connecting rod (57) is connected to the telescopic end of the electric rod (56). The connecting rod (57) is rotatably connected inside the connecting block (55).

3. The automatic cable insulation layer correction and wrapping device according to claim 1, characterized in that: The sleeve (12) is made of metal and includes, but is not limited to, circular, rectangular and conical shapes. The sleeve (12) is rotatably connected between the first annular block (10) and the second annular block (11) through the third annular block (21).

4. The automatic cable insulation layer correction and wrapping device according to claim 1, characterized in that: The inner wall of the sleeve (12) is provided with a placement groove (13), and a C-shaped mounting plate (14) is provided inside the placement groove (13). An extrusion rod (15) is rotatably connected inside the C-shaped mounting plate (14). A threaded rod (16) is threaded through the surface of the sleeve (12). A guide rod (17) is threaded through the surface of the sleeve (12). A driven gear (18) is welded to the surface of the sleeve (12). A servo motor (19) is installed on the side wall of the cooling tank (9) near the extruder head (3). A drive gear (20) is fixedly installed on the output shaft of the servo motor (19).

5. The automatic cable insulation layer correction and wrapping device according to claim 4, characterized in that: The extrusion rod (15) is connected to the sleeve (12) by a C-shaped mounting plate (14), a threaded rod (16) and a guide rod (17) to form a threaded lifting connection.

6. The automatic cable insulation layer correction and wrapping device according to claim 4, characterized in that: The end of the extrusion rod (15) near the second annular block (11) is tapered, and the extrusion rod (15) is made of metal.

7. The automatic cable insulation layer correction and wrapping device according to claim 4, characterized in that: The sleeve (12) is geared to link between the first annular block (10) and the second annular block (11) via the driven gear (18), the servo motor (19) and the driving gear (20).

8. The automatic cable insulation layer correction and wrapping device according to claim 4, characterized in that: The tooth spacing of the driven gear (18) and the driving gear (20) are meshed with each other.

9. The automatic cable insulation layer correction and wrapping device according to claim 1, characterized in that: The screw extruder (1) is longitudinally provided with an air cylinder (22) at the bottom end of the coating extrusion head (3), the telescopic end of the air cylinder (22) is rotatably connected with an abutting block (23), a rectangular block (24) is mounted at the top end of the abutting block (23), the screw extruder (1) is rotatably connected with a support plate (25) at the bottom end of the coating extrusion head (3), a cooling fan (28) is mounted at the top end of the support plate (25), two opposite symmetrical sliding grooves (26) are formed at the bottom end of the support plate (25), sliding blocks (27) are slidably connected inside the sliding grooves (26), the sliding blocks (27) are connected with the rectangular block (24), and the sliding blocks (27) are matched with the sliding grooves (26) and are in a "convex" shape.

10. The automatic cable insulation layer correction and wrapping device according to claim 9, characterized in that: The support plate (25) forms an overturning connection with the screw extruder (1) via the air cylinder (22), the abutting block (23), the rectangular block (24), the sliding grooves (26) and the sliding blocks (27).

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