External deformation detection device for production of crosslinked polyethylene insulated cable

Abstract

The invention belongs to the technical field of cable deformation detection, and particularly relates to an external deformation detection device for crosslinked polyethylene insulated cable production, which comprises a bottom plate, a sealing cover is fixedly connected to the outer wall of the top of the bottom plate through screws, and an annular coating storage bin is fixedly connected to the inner wall of the sealing cover; spraying marking mechanisms distributed at equal intervals are arranged in the annular coating storage bin in the circumferential direction, and a coating drip-proof mechanism is arranged in one end of each spraying marking mechanism. Through a spraying marking mechanism arranged in the circumferential direction of the annular coating storage bin, rapid marking and detection of cable external deformation can be achieved, coating waste and pollution are effectively avoided through a coating leakage-proof mechanism, a second spring pushes a plugging head to be attached to the inner wall of a ball head in a normal state, sealing is achieved through cooperation with a baffle ring, and coating leakage is prevented; and the deformation detection mechanism is matched with the servo motor and the cable winding machine, so that continuous and efficient detection of the cable is realized.

Description

Technical Field

[0001] This invention relates to the field of cable deformation detection technology, and more particularly to an external deformation detection device for the production of cross-linked polyethylene insulated cables. Background Technology

[0002] Cross-linked polyethylene (XLPE) insulated cables are power cables using XLPE as the insulation material. They possess excellent electrical and mechanical properties, heat resistance, and chemical stability, making them widely used in power transmission, building wiring, and industrial equipment connections. Their production process involves multiple steps, including conductor drawing, insulation extrusion, cross-linking curing, and sheath forming. Due to factors such as raw material characteristics, production equipment precision, and process parameter control, the external surface of the finished cable may exhibit deformation problems such as unevenness, bulges, and dents. These external deformations not only affect the cable's appearance quality but can also lead to uneven insulation layer thickness, reducing the cable's insulation performance and mechanical strength. This can easily cause safety hazards such as insulation breakdown and mechanical damage during subsequent laying and use, and in severe cases, even affect the stability and reliability of power transmission. Therefore, accurate and efficient detection of external deformation after cable production is crucial.

[0003] However, existing technologies for detecting external deformation of cross-linked polyethylene insulated cables have some shortcomings, making it difficult to meet the needs of efficient quality inspection during the production process: On the one hand, traditional inspections rely heavily on manual visual inspection, where operators observe the cable surface for deformation with the naked eye. This method is not only labor-intensive and inefficient, but also easily affected by human factors. It is difficult to accurately identify subtle deformation defects, and there is a serious risk of missed detection. On the other hand, some automated testing equipment has a complex structure and a cumbersome testing process. It requires the cable to be tested in sections while stationary, which makes continuous testing impossible. The testing speed is slow and it is difficult to adapt to the pace of large-scale production. At the same time, most existing testing equipment can only determine whether the cable is deformed, but cannot quickly locate the specific location of the deformation. It is necessary to spend additional time to find the defect location. Summary of the Invention

[0004] In view of the shortcomings of the prior art, the present invention provides an external deformation detection device for the production of cross-linked polyethylene insulated cables, which overcomes the shortcomings of the prior art and effectively solves the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: An external deformation detection device for the production of cross-linked polyethylene insulated cables includes a base plate. A sealing cover is fixedly connected to the top outer wall of the base plate by screws, and an annular paint storage chamber is fixedly connected to the inner wall of the sealing cover. The annular paint storage chamber is provided with spray marking mechanisms evenly distributed in the circumferential direction, and a paint anti-drip mechanism is provided inside one end of the spray marking mechanism. A fixing ring is fixedly connected to one side of the outer wall of the sealing cover by screws, and a rotating ring is rotatably connected to the inner wall of the fixing ring. A deformation detection mechanism is provided on one side of the outer wall of the rotating ring. A cable winding machine is provided on the top outer wall of the base plate on one side of the sealing cover, and a servo motor is fixedly connected to one end of the outer wall of the cable winding machine by a coupling. The servo motor is located on one side of the deformation detection mechanism.

[0006] Preferably, the spray marking mechanism includes a feed pipe, a discharge pipe, a first end piece, a first spring, and a ball head. The feed pipe is installed through the inner wall of the annular paint storage chamber, the discharge pipe is slidably connected to the inner wall of the feed pipe, the first end piece is welded to the outer wall of one end of the discharge pipe, the first spring is fixedly connected between the first end piece and the annular paint storage chamber, and the ball head is welded to the outer wall of the other end of the discharge pipe.

[0007] Preferably, the spray marking mechanism further includes a feed inlet, a sealing ring, and a feed port, wherein the feed inlets are symmetrically opened inside the feed pipe, the sealing ring is fixedly connected to the outer wall of the discharge pipe, and the symmetrically distributed feed ports are opened on the outer wall of the discharge pipe, with the feed ports located on both sides of the sealing ring.

[0008] Preferably, the first spring is located inside the sealing cover, and the inlet is located inside the annular paint storage chamber, with the sealing ring positioned between the two inlets.

[0009] Preferably, the anti-drip coating mechanism includes a positioning plate, a sliding column, a second end piece, a second spring, and a sealing head. The positioning plate is welded to the inner wall of one end of the ball head, the sliding column is disposed through the inner wall of the positioning plate, the second end piece is welded to the outer wall of one end of the sliding column, the second spring is fixedly connected between the second end piece and the positioning plate, and the sealing head is welded to the outer wall of the other end of the sliding column and is attached to the inner wall of the other end of the ball head.

[0010] Preferably, the anti-drip coating mechanism further includes a retaining ring, wherein the retaining ring is welded to the inner wall of the other end of the ball head, and the retaining ring is tightly attached to the outer wall of the sealing head.

[0011] Preferably, the deformation detection mechanism includes a first large gear, a first small gear, a first gear shaft, a first bevel gear, a second bevel gear, a second gear shaft, a second small gear, a second large gear, and a photoelectric sensor. The first large gear is fixedly connected to the output shaft of the servo motor. The first small gear meshes with one side of the outer wall of the first large gear. The first gear shaft is mounted on one side of the outer wall of the first small gear. The first bevel gear is installed through the outer wall of the first gear shaft. The second bevel gear meshes with the outer wall of the first bevel gear. The second gear shaft is mounted on one side of the outer wall of the second bevel gear. The second small gear is fixedly connected to one end of the outer wall of the second gear shaft. The second large gear meshes with the outer wall of the second small gear. The photoelectric sensor is fixedly connected to one side of the outer wall of the second large gear by screws, and the second large gear is welded to one side of the outer wall of the rotating ring.

[0012] Preferably, a feeding pipe is installed on one side of the outer wall of the annular paint storage bin, and a pressure valve is installed on the outer wall of the feeding pipe.

[0013] Preferably, a control panel is installed on the top outer wall of the base plate, and the control panel is connected to the photoelectric sensor, servo motor and pressure valve via electrical signals.

[0014] The beneficial effects of this invention are as follows: 1. The external deformation detection device for cross-linked polyethylene insulated cable production of the present invention can realize rapid marking and detection of external deformation of the cable through the spraying and marking mechanism arranged circumferentially in the annular coating storage chamber. When there is a protruding deformation on the cable surface, the ball head will be pushed to drive the discharge pipe to move, so that the inlet and outlet are connected. The coating in the annular coating storage chamber is sprayed on the deformation position through the inlet and outlet pipes, realizing the instant marking of the deformation position. There is no need for manual visual search, which solves the problem of high missed detection rate in traditional detection. Moreover, the spraying and marking mechanism is evenly distributed to ensure that deformation in all directions of the cable circumference can be detected, improving the comprehensiveness and accuracy of the detection. 2. The external deformation detection device for cross-linked polyethylene insulated cable production of the present invention effectively avoids paint waste and pollution through a paint anti-drip mechanism. Under normal conditions, the second spring pushes the sealing head to fit against the inner wall of the ball head, and the retaining ring achieves a seal to prevent paint dripping. When the cable deforms and pushes the ball head, the sealing head is pressed open, and the paint can be sprayed out smoothly. After the deformation detection is completed, the sealing head automatically resets and seals. This not only ensures the smooth marking process, but also avoids paint waste and pollution of the cable surface. At the same time, it simplifies the subsequent cleaning work and improves the cleanliness and economy of the detection process. 3. The external deformation detection device for cross-linked polyethylene insulated cable production of the present invention, through the deformation detection mechanism in conjunction with a servo motor and a cable winding machine, realizes continuous and efficient detection of the cable. The servo motor drives the first large gear to rotate, and through gear transmission and bevel gear transmission, drives the rotating ring and photoelectric sensor to rotate, performing 360-degree all-round detection of the cable. At the same time, the cable winding machine pulls the cable to move at a uniform speed, realizing continuous detection and greatly improving detection efficiency. Attached Figure Description

[0015] Figure 1 This is a three-dimensional schematic diagram of the overall structure of the external deformation detection device for cross-linked polyethylene insulated cable production proposed in this invention. Figure 1 ; Figure 2 This is a three-dimensional schematic diagram of the overall structure of the external deformation detection device for cross-linked polyethylene insulated cable production proposed in this invention. Figure 2 ; Figure 3 This is a schematic diagram of the sealing cover and the internal structure of the annular coating storage bin of the external deformation detection device for the production of cross-linked polyethylene insulated cables proposed in this invention. Figure 4 for Figure 3 Enlarged schematic diagram of part A of the structure; Figure 5 This is a schematic diagram of the internal structure of the feed pipe of the external deformation detection device for cross-linked polyethylene insulated cable production proposed in this invention when the cable is not deformed, causing the spraying channel to be closed. Figure 6 This is a schematic diagram of the internal structure of the feed pipe when cable deformation causes the spraying channel to open, which is an external deformation detection device for the production of cross-linked polyethylene insulated cables proposed in this invention. Figure 7 for Figure 6 Enlarged schematic diagram of part B structure; Figure 8 This is a schematic diagram showing the disassembled structure of the sealing cover, fixing ring, rotating ring, and second large gear of the external deformation detection device for the production of cross-linked polyethylene insulated cables proposed in this invention. Figure 9 This is a schematic diagram of the deformation detection mechanism of the external deformation detection device for the production of cross-linked polyethylene insulated cables proposed in this invention.

[0016] In the diagram: 1. Base plate; 2. Sealing cover; 3. Annular paint storage bin; 4. Spray marking mechanism; 41. Feed pipe; 42. Discharge pipe; 43. First end piece; 44. First spring; 45. Ball head; 46. Inlet; 47. Sealing ring; 48. Inlet; 5. Paint anti-drip mechanism; 51. Positioning plate; 52. Sliding column; 53. Second end piece; 54. Second spring; 55. Sealing head; 56. Retaining ring; 6. Fixed ring; 7. Rotating ring; 8. Deformation detection mechanism; 81. First large gear; 82. First small gear; 83. First gear shaft; 84. First bevel gear; 85. Second bevel gear; 86. Second gear shaft; 87. Second small gear; 88. Second large gear; 89. Photoelectric sensor; 9. Servo motor; 10. Cable winding machine; 11. Feeding pipe; 12. Pressure valve; 13. Control panel. Detailed Implementation

[0017] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0018] Reference Figures 1-9 Example 1: An external deformation detection device for cross-linked polyethylene insulated cable production includes a base plate 1. A sealing cover 2 is fixedly connected to the top outer wall of the base plate 1 by screws. An annular coating storage chamber 3 is fixedly connected to the inner wall of the sealing cover 2. The annular coating storage chamber 3 has spray marking mechanisms 4 evenly distributed around its circumference. The spray marking mechanism 4 includes an inlet pipe 41, an outlet pipe 42, a first end piece 43, a first spring 44, and a ball head 45. The inlet pipe 41 is installed through the inner wall of the annular coating storage chamber 3, and the outlet pipe 42 is slidably connected to the inlet pipe. On the inner wall of 41, the first end piece 43 is welded to the outer wall of one end of the discharge pipe 42, the first spring 44 is fixedly connected between the first end piece 43 and the annular paint storage chamber 3, and the ball head 45 is welded to the outer wall of the other end of the discharge pipe 42. The spray marking mechanism 4 also includes a feed inlet 46, a sealing ring 47 and a feed port 48. The feed inlet 46 is symmetrically opened inside the feed pipe 41, the sealing ring 47 is fixedly connected to the outer wall of the discharge pipe 42, and the symmetrically distributed feed ports 48 are opened on the outer wall of the discharge pipe 42, and the feed ports 48 are located on both sides of the sealing ring 47.

[0019] Through the above scheme, the annular paint storage bin 3 provides storage space for paint, and the circumferentially distributed spray marking mechanism 4 ensures that there are no dead angles in the circumferential detection of the cable. The feed pipe 41 serves as the paint transmission channel, and its sliding cooperation with the discharge pipe 42 realizes the opening and closing control of the spraying channel. The first spring 44 provides the reset power for the discharge pipe 42. Under normal conditions, it pushes the sealing ring 47 to block the feed port 46 to prevent paint leakage. When the cable is deformed, the ball head 45 is pressed and drives the discharge pipe 42 to move, so that the feed port 48 is aligned with the feed port 46. The paint can be smoothly sprayed on the deformed position through the feed pipe 41 and the discharge pipe 42 to realize the instant marking of the deformation. The first end piece 43 enhances the stability of the connection between the discharge pipe 42 and the first spring 44, ensuring that the spring force is evenly transmitted and ensuring the reliability of the operation of the spray marking mechanism 4.

[0020] In embodiment 2, a paint anti-drip mechanism 5 is provided inside one end of the spray marking mechanism 4. The paint anti-drip mechanism 5 includes a positioning plate 51, a sliding column 52, a second end piece 53, a second spring 54, and a sealing head 55. The positioning plate 51 is welded to the inner wall of one end of the ball head 45. The sliding column 52 is disposed through the inner wall of the positioning plate 51. The second end piece 53 is welded to the outer wall of one end of the sliding column 52. The second spring 54 is fixedly connected between the second end piece 53 and the positioning plate 51. The sealing head 55 is welded to the outer wall of the other end of the sliding column 52 and is attached to the inner wall of the other end of the ball head 45. The paint anti-drip mechanism 5 also includes a retaining ring 56, which is welded to the inner wall of the other end of the ball head 45 and is tightly attached to the outer wall of the sealing head 55.

[0021] Through the above scheme, the positioning plate 51 provides installation and guiding support for the sliding column 52, ensuring that the sliding column 52 moves stably along a straight line. The second spring 54 applies an elastic force to the sliding column 52 through the second end piece 53, pushing the sealing head 55 to fit tightly against the inner wall of the ball head 45, forming a double seal with the retaining ring 56. This effectively prevents paint from dripping when not in the testing state, avoiding paint waste and cable surface contamination. When the cable deforms and pushes the ball head 45 to open the spraying channel, the cable surface will squeeze the sealing head 55, causing the sliding column 52 to compress the second spring 54, separating the sealing head 55 from the inner wall of the ball head 45. The paint can then be sprayed out smoothly to achieve marking. After the deformed position is separated, the second spring 54 drives the sealing head 55 to automatically reset and re-seal, ensuring the continuity and cleanliness of the testing process.

[0022] In embodiment three, a fixing ring 6 is fixedly connected to one side of the outer wall of the sealing cover 2 by screws, and a rotating ring 7 is rotatably connected to the inner wall of the fixing ring 6. A deformation detection mechanism 8 is provided on one side of the outer wall of the rotating ring 7. A cable winding machine 10 is provided on the top outer wall of the base plate 1 located on one side of the sealing cover 2, and a servo motor 9 is fixedly connected to one end of the outer wall of the cable winding machine 10 by a coupling. The servo motor 9 is located on one side of the deformation detection mechanism 8. The deformation detection mechanism 8 includes a first large gear 81, a first small gear 82, a first gear shaft 83, a first bevel gear 84, a second bevel gear 85, a second gear shaft 86, a second small gear 87, a second large gear 88, and a photoelectric sensor 89. The first large gear 81 is fixed... Connected to the output shaft of the servo motor 9, the first pinion 82 meshes with the outer wall of the first large gear 81 on one side, the first gear shaft 83 is mounted on the outer wall of the first pinion 82 on one side, the first bevel gear 84 is mounted through and on the outer wall of the first gear shaft 83, the second bevel gear 85 meshes with the outer wall of the first bevel gear 84, the second gear shaft 86 is mounted on the outer wall of the second bevel gear 85 on one side, the second pinion 87 is fixedly connected to the outer wall of one end of the second gear shaft 86, the second large gear 88 meshes with the outer wall of the second pinion 87, and the photoelectric sensor 89 is fixedly connected to the outer wall of the second large gear 88 on one side by screws, and the second large gear 88 is welded to the outer wall of the rotating ring 7 on one side.

[0023] Through the above scheme, the fixed ring 6 provides rotational support for the rotating ring 7, ensuring the stable rotation of the rotating ring 7. The servo motor 9 serves as the power source, and the meshing transmission between the first large gear 81 and the first small gear 82 achieves deceleration and improves torque output. The first gear shaft 83 drives the first bevel gear 84 to rotate, and the meshing of the first bevel gear 84 and the second bevel gear 85 changes the direction of power, converting the horizontal rotation into the vertical rotation. Then, through the meshing transmission between the second gear shaft 86, the second small gear 87 and the second large gear 88, the rotating ring 7 and the photoelectric sensor 89 are driven to rotate at a uniform speed, realizing 360-degree all-round detection of the cable circumference, avoiding detection blind spots. The photoelectric sensor 89 can collect cable surface information in real time and transmit it to the control panel 13. In conjunction with the cable winding machine 10, the cable is pulled to move at a uniform speed, realizing continuous detection of the cable, greatly improving detection efficiency, and meeting the needs of large-scale production.

[0024] The first spring 44 is located inside the sealing cover 2, and the inlet 46 is located inside the annular paint storage chamber 3. The sealing ring 47 is located between the two inlets 46.

[0025] Through the above scheme, the sealing cover 2 provides protection for the first spring 44, preventing external dust and impurities from entering and affecting the spring's elasticity and service life. At the same time, it prevents paint from splashing and polluting the environment. The inlet 46 is located inside the annular paint storage chamber 3 to ensure that the paint can smoothly enter the inlet pipe 41. The sealing ring 47 is located between the two inlets 46. Under normal conditions, it can seal both inlets 46 at the same time to ensure the sealing effect of the spraying channel. Only when the outlet pipe 42 moves to a specific position will the inlet 48 align with the inlet 46 to achieve precise paint supply, prevent paint from leaking without reason, and improve paint utilization.

[0026] A feeding pipe 11 is connected to one side of the outer wall of the annular paint storage bin 3, and a pressure valve 12 is installed on the outer wall of the feeding pipe 11.

[0027] Through the above scheme, the replenishment pipe 11 is used to replenish paint into the annular paint storage chamber 3, ensuring sufficient paint supply during the testing process and avoiding the impact of insufficient paint on the continuity of the testing work. The pressure valve 12 can control the opening and closing of the replenishment pipe 11 and the replenishment pressure. When the paint pressure in the annular paint storage chamber 3 is insufficient, the pressure valve 12 automatically opens to replenish the paint. When the paint pressure reaches the set value, it automatically closes to maintain the pressure in the annular paint storage chamber 3, ensuring that the paint can be sprayed out smoothly during the test and ensuring clear and uniform marking effect.

[0028] A control panel 13 is installed on the top outer wall of the base plate 1, and the control panel 13 is connected to the photoelectric sensor 89, the servo motor 9 and the pressure valve 12 via electrical signals.

[0029] Through the above scheme, the base plate 1 provides a stable installation foundation for the control panel 13. As the control and display core of the equipment, the control panel 13 can receive the detection data transmitted by the photoelectric sensor 89 in real time and intuitively display the surface condition and deformation information of the cable to the operator. At the same time, the operator can set the speed of the servo motor 9 and the traction speed of the cable winding machine 10 through the control panel 13 to achieve precise control of the detection speed. The control panel 13 can also monitor the working status of the pressure valve 12 and the coating pressure in the annular coating storage chamber 3. When the coating is insufficient, a reminder signal is issued to facilitate the operator to replenish the material in time, realize the automated and intelligent control of the equipment, and reduce the intensity of manual operation.

[0030] Working principle: When using this external deformation detection device for the production of cross-linked polyethylene insulated cables, firstly, an appropriate amount of testing coating is injected into the annular coating storage chamber 3 through the feeding pipe 11. The pressure valve 12 automatically controls the coating pressure to be maintained within the set range. One end of the cross-linked polyethylene insulated cable to be tested is passed through the center of the sealing cover 2, the annular coating storage chamber 3, the fixing ring 6 and the rotating ring 7, and fixed on the cable winding machine 10, ensuring that the cable is in the central axis position and makes slight contact with the ball head 45 of each spray marking mechanism 4.

[0031] The operator starts the equipment via the control panel 13. The servo motor 9 and the cable winding machine 10 start synchronously. The cable winding machine 10 pulls the cable forward at a constant speed to achieve continuous detection. When there is a protruding deformation on the cable surface, the deformed part will squeeze the ball head 45 at the corresponding position, pushing the discharge pipe 42 to slide along the feed pipe 41 and compressing the first spring 44. At this time, the feed port 48 on the discharge pipe 42 is aligned with the feed port 46 on the feed pipe 41. The paint in the annular paint storage bin 3 enters through the feed port 46. The material enters the discharge pipe 42 through the inlet 48. At the same time, the deformed part squeezes the sealing head 55, which drives the sliding column 52 to compress the second spring 54. The sealing head 55 separates from the inner wall of the ball head 45, and the coating is sprayed out from the ball head 45, forming a clear mark at the deformation position. When the deformed part of the cable is separated from the ball head 45, the first spring 44 pushes the discharge pipe 42 to reset, and the sealing ring 47 re-seals the inlet 46, closing the spraying channel. At the same time, the second spring 54 pushes the sealing head 55 to reset, which cooperates with the retaining ring 56 to achieve a seal and prevent coating leakage. At the same time, the servo motor 9 drives the first large gear 81 to rotate. The first large gear 81 meshes with the first small gear 82, which drives the first gear shaft 83 and the first bevel gear 84 to rotate. The first bevel gear 84 meshes with the second bevel gear 85 to change the direction of power. The second small gear 87 is driven to rotate through the second gear shaft 86. The second small gear 87 meshes with the second large gear 88, which drives the rotating ring 7 and the photoelectric sensor 89 to rotate at a constant speed. The rotating cable is scanned and detected in all directions at 360 degrees. The photoelectric sensor 89 transmits the collected cable surface information to the control screen 13 in real time. During the inspection, the control panel 13 displays the inspection data and the surface condition of the cable in real time. The operator can quickly locate the deformation position through the markings. After the inspection is completed, the equipment is turned off, the marked cable is removed, and the deformed part can be further processed according to the markings.

[0032] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An external deformation detection device for the production of cross-linked polyethylene insulated cables, comprising a base plate (1), characterized in that, The top outer wall of the base plate (1) is fixedly connected to a sealing cover (2) by screws, and an annular paint storage chamber (3) is fixedly connected to the inner wall of the sealing cover (2). The annular paint storage chamber (3) is provided with spray marking mechanisms (4) evenly distributed in the circumferential direction, and a paint anti-drip mechanism (5) is provided at one end of the spray marking mechanism (4). A fixing ring (6) is fixedly connected to one side of the outer wall of the sealing cover (2) by screws, and a rotating ring (7) is rotatably connected to the inner wall of the fixing ring (6). A deformation detection mechanism (8) is provided on one side of the outer wall of the rotating ring (7). A cable winding machine (10) is provided on the top outer wall of the base plate (1) on one side of the sealing cover (2), and a servo motor (9) is fixedly connected to one end of the outer wall of the cable winding machine (10) by a coupling. The servo motor (9) is located on one side of the deformation detection mechanism (8).

2. The external deformation detection device for cross-linked polyethylene insulated cable production according to claim 1, characterized in that, The spray marking mechanism (4) includes a feed pipe (41), a discharge pipe (42), a first end piece (43), a first spring (44), and a ball head (45). The feed pipe (41) is installed through the inner wall of the annular paint storage chamber (3), the discharge pipe (42) is slidably connected to the inner wall of the feed pipe (41), the first end piece (43) is welded to the outer wall of one end of the discharge pipe (42), the first spring (44) is fixedly connected between the first end piece (43) and the annular paint storage chamber (3), and the ball head (45) is welded to the outer wall of the other end of the discharge pipe (42).

3. The external deformation detection device for cross-linked polyethylene insulated cable production according to claim 2, characterized in that, The spray marking mechanism (4) further includes a feed inlet (46), a sealing ring (47), and a feed port (48). The feed inlet (46) is symmetrically opened inside the feed pipe (41), the sealing ring (47) is fixedly connected to the outer wall of the discharge pipe (42), and the symmetrically distributed feed ports (48) are opened on the outer wall of the discharge pipe (42), and the feed ports (48) are located on both sides of the sealing ring (47).

4. The external deformation detection device for cross-linked polyethylene insulated cable production according to claim 3, characterized in that, The first spring (44) is located inside the sealing cover (2), and the feed port (46) is located inside the annular paint storage bin (3). The sealing ring (47) is located between the two feed ports (46).

5. The external deformation detection device for cross-linked polyethylene insulated cable production according to claim 1, characterized in that, The anti-drip coating mechanism (5) includes a positioning plate (51), a sliding column (52), a second end piece (53), a second spring (54), and a sealing head (55). The positioning plate (51) is welded to the inner wall of one end of the ball head (45), the sliding column (52) is disposed through the inner wall of the positioning plate (51), the second end piece (53) is welded to the outer wall of one end of the sliding column (52), the second spring (54) is fixedly connected between the second end piece (53) and the positioning plate (51), and the sealing head (55) is welded to the outer wall of the other end of the sliding column (52) and the sealing head (55) is attached to the inner wall of the other end of the ball head (45).

6. The external deformation detection device for cross-linked polyethylene insulated cable production according to claim 1, characterized in that, The coating anti-drip mechanism (5) also includes a retaining ring (56), wherein the retaining ring (56) is welded to the inner wall of the other end of the ball head (45), and the retaining ring (56) is tightly attached to the outer wall of the sealing head (55).

7. The external deformation detection device for cross-linked polyethylene insulated cable production according to claim 1, characterized in that, The deformation detection mechanism (8) includes a first large gear (81), a first small gear (82), a first gear shaft (83), a first bevel gear (84), a second bevel gear (85), a second gear shaft (86), a second small gear (87), a second large gear (88), and a photoelectric sensor (89). The first large gear (81) is fixedly connected to the output shaft of the servo motor (9). The first small gear (82) meshes with one side of the outer wall of the first large gear (81). The first gear shaft (83) is mounted on one side of the outer wall of the first small gear (82). The first bevel gear... The wheel (84) is installed through the outer wall of the first gear shaft (83), the second bevel gear (85) meshes with the outer wall of the first bevel gear (84), the second gear shaft (86) is installed on one side of the outer wall of the second bevel gear (85), the second pinion (87) is fixedly connected to one end of the outer wall of the second gear shaft (86), the second large gear (88) meshes with the outer wall of the second pinion (87), the photoelectric sensor (89) is fixedly connected to one side of the outer wall of the second large gear (88) by screws, and the second large gear (88) is welded to one side of the outer wall of the rotating ring (7).

8. The external deformation detection device for cross-linked polyethylene insulated cable production according to claim 1, characterized in that, The annular paint storage bin (3) has a feeding pipe (11) installed on one side of its outer wall, and a pressure valve (12) is installed on the outer wall of the feeding pipe (11).

9. The external deformation detection device for cross-linked polyethylene insulated cable production according to claim 1, characterized in that, The control panel (13) is installed on the top outer wall of the base plate (1), and the control panel (13) is connected to the photoelectric sensor (89), the servo motor (9) and the pressure valve (12) by electrical signals.

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