Extrusion device for the production of cables

Abstract

The application belongs to the technical field of cable manufacturing device, and particularly relates to an extrusion forming device for cable manufacturing, which comprises an extruder and a flaw detection-heat dissipation system, wherein the flaw detection-heat dissipation system comprises a flaw detection device, an air cooling device and a water cooling device; the extruder is provided with an extrusion pipe on the right side; the flaw detection device comprises a ray generator and a protective shell, a glass tube is arranged in the protective shell, the glass tube is in communication with the extrusion pipe on the left side, and the extruded cable is transmitted to the flaw detection device through the extrusion pipe on the right side; the air cooling device comprises an air cooling device shell, a heat dissipation exchange window, a blower and a circulating device; the extruder and the flaw detection-heat dissipation system are organically combined, the integration of the cable forming, flaw detection and cooling is realized, and the problems of the existing equipment, such as process dispersion and low efficiency, are effectively solved. The implementation of the application can significantly improve the production efficiency and product quality of the cable manufacturing, reduce the production cost, and has important economic value for the cable production industry.

Description

Technical Field

[0001] This invention relates to the field of cable manufacturing equipment technology, specifically to an extrusion molding device for cable manufacturing. Background Technology

[0002] In the modern cable manufacturing industry, the production quality and efficiency of cables are crucial to meeting market demands and enhancing corporate competitiveness. The cable manufacturing process typically includes several key steps such as extrusion molding, flaw detection, and cooling. Currently, there are some problems that need to be solved in the extrusion molding process of cables. On the one hand, traditional cable production equipment often separates the extrusion molding, flaw detection and cooling processes. Each process requires additional transmission equipment and manual operation to connect them. This not only increases equipment costs and floor space, but also leads to a complicated and inefficient production process. Furthermore, the transmission process may damage the cable and affect product quality. In terms of flaw detection, most existing flaw detection technologies cannot perform comprehensive and accurate testing immediately after cable extrusion molding; some flaw detection equipment has low detection accuracy and is difficult to detect tiny defects inside the cable, such as bubbles and cracks. The cooling process for cables also faces many challenges. Traditional cooling methods mainly use single air cooling or water cooling technologies, which have low cooling efficiency and cannot quickly reduce the temperature of the formed cable to a suitable range, thus severely restricting the improvement of production speed. Moreover, a single cooling method often cannot guarantee the uniformity of cable cooling, which can easily lead to quality problems such as deformation and cracking of the cable due to uneven temperature changes, affecting the performance and service life of the cable. Summary of the Invention

[0003] The purpose of this invention is to provide an extrusion molding apparatus for cable manufacturing, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: an extrusion molding apparatus for cable manufacturing, comprising an extruder and a flaw detection-heat dissipation system, wherein the flaw detection-heat dissipation system comprises a flaw detection device, an air cooling device, and a water cooling device; an extrusion tube is installed on the right side of the extruder; the flaw detection device comprises a radiation generator and a protective shell, wherein a glass tube is installed inside the protective shell, the glass tube is connected to the extrusion tube to the left, and the extruded cable is conveyed to the flaw detection device to the right through the extrusion tube; The air-cooled device includes an air-cooled device shell, a heat exchange window, a blower, and a circulation device. The inner cavity of the air-cooled device shell is provided with two layers of inner lining tubes. An air passage cavity is reserved between the outer inner lining tube and the air-cooled device shell, and a ventilation cavity is reserved between the inner inner lining tube and the outer inner lining tube. The heat exchange window is a water-cooled exchange window with heat exchange function. The water cooling device includes a water cooling shell, a circulating heat dissipation system and an extension cooling pipe. The circulating heat dissipation system includes a heat dissipation tank, a backup water tank, a spiral heat absorption pipe and a connecting pipe. The circulating heat dissipation system is filled with circulating coolant, and the coolant is transferred through the connecting pipe. A control system is used in conjunction with the flaw detection-heat dissipation system. The control system includes a programmable logic controller and detection sensors installed in the device. Air pressure-temperature detection sensors are installed on the side walls of the air passage and ventilation chamber of the air-cooling device, and liquid level-water temperature detection sensors are installed in the inner cavity of the heat dissipation exchange window. Liquid level and water temperature detection sensors are installed in the inner cavities of the spiral heat absorption tube, heat dissipation tank, and backup water tank of the water cooling device. The detection sensors detect the temperature changes of each part in real time, and when the temperature rises to the preset value, the actuator connected to the control system actively completes the command action.

[0005] Preferably, the surface of the inner liner tube is uniformly provided with mesh-type heat dissipation windows; the surface of the outer liner tube is uniformly provided with wide-mouth heat dissipation windows; the opening diameter of the wide-mouth heat dissipation windows is 2-5 times the opening diameter of the mesh-type heat dissipation windows; the mesh-type heat dissipation windows and the wide-mouth heat dissipation windows are responsible for guiding the heat on the formed cable to the ventilation cavity and the air passage cavity for diffusion. Blowers are symmetrically installed on the right side of the front and rear sides of the air-cooling device housing. Mounting grooves are provided at the connection points between the air-cooling device housing and the blowers, and rubber sealing rings are installed at the contact points between the edges of the mounting grooves and the blowers. A fixing frame is installed below the blowers, and a blower drive motor is installed on the top of the fixing frame. A metal mesh is installed on the blowers. The blower blows air into the air passage cavity, creating a low-pressure area within the air passage cavity, while a high-pressure area is formed in the ventilation cavity due to the hot airflow. Under the influence of the pressure difference, the air in the high-pressure area will accelerate its flow to the low-pressure area, which will accelerate the diffusion of hot air in the ventilation cavity into the air passage cavity, thereby accelerating heat dissipation.

[0006] Preferably, heat dissipation windows are symmetrically installed on the left side of the front and rear sides of the air-cooled device housing. The heat dissipation windows are interconnected with the air passage cavity, and the hot air in the air passage cavity is dispersed out through the heat dissipation windows to achieve the purpose of air cooling. The inner cavity of the heat exchange window is hollow and can be filled with cooling medium. A circulation device is installed below the heat exchange window. The circulation device includes a water exchange adapter, a water injection pump, and water pipes. The water exchange adapter is installed at the bottom of the heat exchange window and is connected to the inner cavity of the heat exchange window. Two water pipes are installed on the water exchange adapter, one for water inlet and one for water outlet. The water inlet pipe is connected to the water injection pump, and the water inlet of the water injection pump is connected to the water supply source through a water pipe. The water outlet of the water exchange adapter is connected to the outside through a water pipe, transferring the heated water to the outside for secondary use. The heat exchange window is evenly distributed with exchange pipes, which are made of aluminum alloy. Air outlets are reserved between adjacent exchange pipes. When the airflow passes through the exchange pipes, it exchanges heat with the liquid inside.

[0007] Preferably, an inner tube is provided in the inner cavity of the water-cooled shell, and the shaped cable passes through the inner cavity of the inner tube; the spiral heat absorption tube is sleeved on the outside of the inner tube, and heat exchange is carried out through heat conduction; The heat dissipation tank is installed on the top of the water-cooled shell; the heat dissipation tank includes a heat dissipation storage tank and a heat dissipation integrated fan, the heat dissipation integrated fan is installed on the right side wall of the heat dissipation storage tank, and a finned plate is also installed between the heat dissipation integrated fan and the heat dissipation storage tank. A check device is installed between the heat dissipation water tank and the spiral heat absorption pipe. The check device includes a check valve, a support base, and a suction pump. The support base is installed at the bottom of the check valve, and the suction pump is installed between the check valve and the heat dissipation water tank and connected to each other through a connecting pipe.

[0008] Preferably, the backup water tank is installed on the front side of the water-cooled shell; the backup water tank includes a backup water storage tank and a heat dissipation fin plate, the heat dissipation fin plate is installed on the front side of the backup water storage tank to increase the heat dissipation efficiency of the surface of the backup water storage tank; a liquid pump is installed on the top of the backup water storage tank, and the liquid pump is connected to the heat dissipation water storage tank through a connecting pipe, the liquid pump is responsible for drawing out the coolant in the heat dissipation water storage tank. A pressurized liquid pump is installed at the bottom of the backup water tank. The pressurized liquid pump is connected to the spiral heat absorption pipe through a connecting pipe. The pressurized liquid pump is responsible for pressurizing and pumping the coolant in the backup water tank to the spiral heat absorption pipe.

[0009] Preferably, the top and bottom of the spiral heat absorber are provided with a transfer main pipe, and the side of the transfer main pipe away from the spiral heat absorber is provided with a transfer valve. The transfer valve is connected to the heat dissipation water tank and the spare water tank through a connecting pipe. Multiple transfer branches are distributed between the main transfer pipe and the spiral heat absorption pipe. The transfer branches are connected to the spiral heat absorption pipe from different positions to realize simultaneous injection or output at multiple points of the spiral heat absorption pipe. Each of the aforementioned connecting pipes is provided with a drainage cavity, which is connected to the spiral heat absorption pipe. A one-way valve is installed at the contact point between each drainage cavity and the spiral heat absorption pipe. The drainage cavity adopts a design that is narrow at both ends and wide in the middle.

[0010] Preferably, an inner liner is also provided in the inner cavity of the extended cooling pipe, and a filling cavity is reserved between the extended cooling pipe and the inner liner; a control valve is installed at the bottom and rear side of the extended cooling pipe respectively, which is responsible for injecting and discharging the cooling medium in the filling cavity; a discharge port is opened on the right side of the extended cooling pipe. Cooling medium is injected into the filling cavity, which can achieve heat exchange when the formed cable passes through it. Moreover, the length of the extended cooling pipe can be customized as needed. By extending the length of the extended cooling pipe, the purpose of water jacket cooling is achieved. In conjunction with the device on the left, the temperature of the formed cable is effectively reduced in an orderly manner.

[0011] Preferably, the spiral heat absorber is responsible for absorbing heat and then transporting the coolant to the heat dissipation tank. The heat dissipation tank is responsible for cooling the heated coolant and then transporting the cooled coolant to the standby tank for later use. When the coolant in the spiral heat absorber is transported out, new low-temperature coolant is immediately injected from the standby tank to realize the cycle of cooling. The use of three storage containers can realize the cooling operation without interruption.

[0012] Compared with the prior art, the beneficial effects of the present invention are: This solution integrates an extruder with a flaw detection-heat dissipation system, achieving unified operation of cable forming, flaw detection, and cooling, effectively solving the problems of fragmented processes and low efficiency in existing equipment. The flaw detection device can perform high-precision flaw detection promptly after cable forming, ensuring product quality. The multi-stage cooling system combining air cooling, water cooling, and water jacket cooling significantly improves cooling efficiency and uniformity. Simultaneously, the equipped intelligent control system can monitor equipment operating parameters in real time, achieving intelligent control of the equipment and improving the stability and reliability of the production process. The implementation of this invention will significantly improve cable manufacturing efficiency and product quality, reduce production costs, and has significant economic value for the cable manufacturing industry. Attached Figure Description

[0013] Figure 1 This is a front view of the present invention; Figure 2 This is a rear view of the present invention; Figure 3 This is a side perspective view of the present invention; Figure 4 This is a schematic diagram of the flaw detection-heat dissipation system of the present invention; Figure 5 This is a schematic diagram of the air-cooling device of the present invention; Figure 6 This is a schematic diagram of the heat dissipation and exchange window of the present invention; Figure 7 This is a schematic diagram of the water cooling device of the present invention; Figure 8 This is a rear view of the cooling water tank of the present invention; Figure 9 This is a schematic diagram of the circulating heat dissipation system of the water-cooling device of the present invention; Figure 10 This is a schematic diagram of the drainage cavity structure of the present invention.

[0014] In the diagram: 10 Extruder, 101 Extrusion Tube; 20 Flaw Detection Device, 201 X-ray Generator, 202 Protective Housing; 30 Air-cooled unit, 301 Air-cooled unit housing, 302 Heat exchange window, 303 Blower, 305 Metal mesh, 306 Air passage cavity, 307 Ventilation cavity, 308 Mesh heat exchange window, 309 Wide-mouth heat exchange window, 310 Exchange pipe, 311 Air outlet; 304 circulating device, 304-1 water changer adapter, 304-2 water injection pump, 304-3 water pipe; 40 Water cooling device, 401 Water cooling shell, 406 Connecting pipe, 407 Inner liner pipe, 408 Spiral heat absorption pipe, 409 Transfer valve, 410 Transfer main pipe, 411 Transfer branch pipe, 412 Drainage chamber; 402 heat sink, 402-1 heat storage tank, 402-2 integrated cooling fan; 403 spare water tank, 403-1 spare water storage tank, 403-2 heat dissipation fin plate; 404 check valve, 404-1 check valve, 404-2 support base, 404-3 suction pump; 405 extended cooling pipe, 405-1 filling cavity, 405-2 control valve; 50 discharge port. Detailed Implementation

[0015] 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.

[0016] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0017] Example: Please see Figure 1-10 The present invention provides the following technical solution: an extrusion molding device for cable manufacturing, which realizes the integrated operation of cable molding, flaw detection and cooling, reduces the connection time and material transfer process between different processes, and makes the production process more compact and efficient; It includes an extruder 10 and a flaw detection-heat dissipation system, wherein the flaw detection-heat dissipation system includes a flaw detection device 20, an air cooling device 30 and a water cooling device 40; an extrusion pipe 101 is installed on the right side of the extruder 10; The flaw detection device 20 includes a radiation generator 201 and a protective shell 202. A glass tube is installed inside the protective shell 202, and the glass tube is connected to the extrusion tube 101 to the left. The extruded cable is transmitted to the flaw detection device 20 to the right through the extrusion tube 101 for flaw detection. The air-cooling device 30 includes an air-cooling device housing 301, a blower 303, and a circulation device 304. The inner cavity of the air-cooling device housing 301 is provided with two layers of inner lining tubes. An air passage cavity 306 is reserved between the outer inner lining tube and the air-cooling device housing 301, and a ventilation cavity 307 is reserved between the inner inner lining tube and the outer inner lining tube. The formed cable passes laterally through the inner cavity of the inner liner tube. The surface of the inner liner tube is uniformly provided with mesh-type heat dissipation windows 308. The surface of the outer liner tube is uniformly provided with wide-mouth heat dissipation windows 309. The opening diameter of the wide-mouth heat dissipation windows 309 is 2-5 times the opening diameter of the mesh-type heat dissipation windows 308. The mesh-type heat dissipation windows 308 and the wide-mouth heat dissipation windows 309 are responsible for guiding the heat on the formed cable to the ventilation cavity 307 and the air passage cavity 306 for diffusion. Blowers 303 are symmetrically installed on the right side of the front and rear sides of the air-cooled device housing 301. The air-cooled device housing 301 and the blower 303 are connected by mounting grooves, and rubber sealing rings are installed at the contact points between the edges of the mounting grooves and the blower 303. A mounting bracket is installed below the blower 303, and a blower drive motor is installed on the top of the mounting bracket; a metal mesh 305 is installed on the blower 303 to block flying insects or large dust particles. Blower 303 blows air into air passage cavity 306. According to Bernoulli's principle, the air pressure in the area blown by the air is lower than that in the surrounding area, forming a low-pressure area in air passage cavity 306. In contrast, a high-pressure area is formed in ventilation cavity 307 due to the hot air flow. Under the action of the air pressure difference, the air in the high-pressure area will accelerate to flow to the low-pressure area. Therefore, the hot air in ventilation cavity 307 will accelerate to diffuse into air passage cavity 306. The pressure difference drives the hot air to be discharged through the window at an accelerated speed, thereby improving the heat dissipation efficiency. The front and rear sides of the outer shell 301 of the air-cooled device are symmetrically equipped with heat exchange windows 302 on the left side. The heat exchange windows 302 are connected to the air passage 306 inward, and the hot air in the air passage 306 is dispersed out through the heat exchange windows 302 to achieve the purpose of air cooling. The heat exchange window 302 is a water-cooled heat exchange window with heat exchange function. The inner cavity of the heat exchange window 302 is hollow and can be filled with water. A circulation device 304 is installed below the heat exchange window 302. The circulation device 304 includes a water exchange adapter 304-1, a water injection pump 304-2, and water pipes 304-3. The water exchange adapter 304-1 is installed at the bottom of the heat exchange window 302 and is connected to the inner cavity of the heat exchange window 302. Two water pipes 304-3 are installed on the water exchange adapter 304-1, one for water inlet and one for water outlet. The water pipe 304-3 for water inlet is connected to the water injection pump 304-2, and the water inlet of the water injection pump 304-2 is connected to the water supply source through the water pipe 304-3. The water outlet of the water exchange adapter 304-1 is connected to the outside through the water pipe 304-3, transferring the heated water to the outside for secondary use. The heat exchange window 302 is evenly distributed with exchange tubes 310. The exchange tubes 310 are made of aluminum alloy and have good heat absorption performance. An air outlet 311 is reserved between adjacent exchange tubes 310. The airflow in the air passage 307 is discharged through the air outlet 311. When passing through the exchange tubes 310, it exchanges heat with the liquid inside, and the heat is collected and utilized for a second time. The water cooling device 40 includes a water cooling shell 401, a circulating heat dissipation system, and an extended cooling pipe 405. The circulating heat dissipation system includes a heat dissipation water tank 402, a backup water tank 403, a spiral heat absorption pipe 408, and a connecting pipe 406. The circulating heat dissipation system is filled with circulating coolant, and the coolant is transferred through the connecting pipe 406. The multi-stage cooling method (air cooling, water cooling, and water jacket cooling) can quickly reduce the cable temperature and effectively shorten the cable cooling time, thereby accelerating the production pace and increasing the cable output per unit time. The spiral heat absorber 408 is responsible for absorbing heat and then transporting the coolant to the heat dissipation tank 402. The heat dissipation tank 402 is responsible for cooling the heated coolant and transporting the cooled coolant to the standby tank 403 for standby. When the coolant in the spiral heat absorber 408 is transported out, new low-temperature coolant is immediately injected into the standby tank 403 to realize the cooling process cycle. The three storage containers can realize the cooling operation without interruption. The inner cavity of the water-cooled outer shell 401 is provided with an inner tube 407, and the molded cable passes through the inner cavity of the inner tube 407; the spiral heat absorption tube 408 is sleeved on the outside of the inner tube 407 and exchanges heat through heat conduction. The heat dissipation tank 402 is installed on the top of the water-cooled housing 401; the heat dissipation tank 402 includes a heat dissipation storage tank 402-1 and a heat dissipation integrated fan 402-2. The heat dissipation integrated fan 402-2 is installed on the right side wall of the heat dissipation storage tank 402-1, and a finned plate is also installed between the heat dissipation integrated fan 402-2 and the heat dissipation storage tank 402-1 to increase heat dissipation efficiency; the heat inside the heat dissipation storage tank 402-1 is dissipated through the heat dissipation integrated fan 402-2. A check device 404 is installed between the heat dissipation tank 402 and the spiral heat absorption pipe 408. The check device 404 includes a check valve 404-1, a support base 404-2 and a suction pump 404-3. The support base 404-2 is installed at the bottom of the check valve 404-1. The suction pump 404-3 is installed between the check valve 404-1 and the heat dissipation tank 402-1 and is connected to each other through a connecting pipe 406. A backup water tank 403 is installed on the front side of the water-cooled housing 401. The backup water tank 403 includes a backup water storage tank 403-1 and a heat dissipation fin plate 403-2. The heat dissipation fin plate 403-2 is installed on the front side of the backup water storage tank 403-1 to increase the heat dissipation efficiency of the surface of the backup water storage tank 403-1 and dissipate the residual heat inside the backup water storage tank 403-1. A liquid pump is installed on the top of the backup water storage tank 403-1, and the liquid pump is connected to the heat dissipation water storage tank 402-1 through a connecting pipe 406. The liquid pump is responsible for drawing out the coolant from the heat dissipation water storage tank 402-1. A pressurized liquid pump is installed at the bottom of the backup water tank 403-1. The pressurized liquid pump is connected to the spiral heat absorption pipe 408 through the connecting pipe 406. The pressurized liquid pump is responsible for pressurizing and pumping the coolant in the backup water tank 403-1 to the spiral heat absorption pipe 408. The top and bottom of the spiral heat absorption tube 408 are provided with a transfer main pipe 410. The transfer main pipe 410 is provided with a transfer valve 409 on the side away from the spiral heat absorption tube 408. The transfer valve 409 is connected to the heat dissipation water storage tank 402-1 and the spare water storage tank 403-1 through the connecting pipe 406. Multiple adapter pipes 411 are distributed between the main adapter pipe 410 and the spiral heat absorber pipe 408. The adapter pipes 411 are connected to the spiral heat absorber pipe 408 from different positions to realize simultaneous injection or output at multiple points of the spiral heat absorber pipe 408, avoid the problem of uneven temperature change of the spiral heat absorber pipe 408, and extend the service life of the spiral heat absorber pipe 408. Each connecting pipe 411 is provided with a drainage cavity 412, which is connected to the spiral heat absorption pipe 408. A one-way valve is installed at the contact position between each drainage cavity 412 and the spiral heat absorption pipe 408. The flow chamber 412 adopts a design that is narrow at both ends and wide in the middle. When the coolant passes through, the flow rate of the fluid will decrease due to the widening of the middle section. The gradual shape allows the fluid to change its flow rate and direction more smoothly during the flow process, reducing the generation of turbulence and eddies, thereby reducing energy loss and the impact of the fluid on the inner wall of the spiral heat absorption tube 408, which can significantly improve the transmission efficiency of the coolant in the pipe. An inner liner tube 407 is also provided in the inner cavity of the extension cooling pipe 405, and a filling cavity 405-1 is reserved between the extension cooling pipe 405 and the inner liner tube 407. The extended cooling pipe 405 has two cooling modes. One mode is to inject a cooling medium (water or ethylene glycol solution) into the filling cavity 405-1, so that heat exchange can be achieved when the formed cable passes through. Moreover, the length of the extended cooling pipe 405 can be customized as needed. By extending the length of the extended cooling pipe 405, the purpose of water jacket cooling and temperature reduction can be achieved. Together with the device on the left, the temperature of the formed cable can be effectively reduced in an orderly manner. A control valve 405-2 is installed at the bottom and rear of the extended cooling pipe 405, respectively, which is responsible for injecting and discharging the cooling medium in the filling cavity 405-1; Another mode is to extend the spiral heat absorber tube 408 to the right and fit it onto the inner tube 407, thereby extending the contact range between the spiral heat absorber tube 408 and the formed cable, improving the efficiency of heat exchange, and thus achieving effective cooling. The two modes can be changed as needed. When switching modes, it is necessary to customize the appropriate length of the spiral heat absorber tube 408. This invention realizes the integrated operation of cable forming, flaw detection and cooling, which solves the problems of subsequent complex working conditions and potential equipment costs, and is very convenient and efficient. This solution can quickly reduce the temperature of the formed cable. The formed cable goes through the first stage of air cooling, the second stage of water cooling and the third stage of water jacket cooling in sequence to achieve the purpose of rapid cooling, effectively shortening the cooling time of the cable and thus improving the production speed. A discharge port 50 is provided on the right side of the extended cooling pipe 405; A control system is used in conjunction with the flaw detection-heat dissipation system. The control system includes a programmable logic controller (PLC) and detection sensors installed in the device. Air pressure-temperature detection sensors are installed on the side walls of the air passage 306 and ventilation 307 of the air-cooling device 30, and liquid level-water temperature detection sensors are installed in the inner cavity of the heat dissipation exchange window 302. Liquid level and water temperature detection sensors are installed in the inner cavities of the spiral heat absorption tube 408, the heat dissipation tank 402, and the spare water tank 403 of the water cooling device 40. The sensors mentioned above can detect temperature changes in various parts in real time, and can issue a reminder when the temperature rises to a preset value, or can actively complete the command action through the actuator connected to the control system, which is very convenient.

[0018] The working principle of this solution is as follows: Flaw detection: The extruder 10 heats the plastic granules to a molten state and continuously extrudes them into cables through the extrusion tube 101; the cable temperature is initially about 180-220℃ depending on the material. The cable enters the flaw detection device 20 through the glass tube inside the protective shell 202. The X-ray generator 201 emits X-rays to detect flaws in the cable. The glass tube inside the protective shell 202 is connected to the extrusion tube 101, ensuring that the cable can pass smoothly through the flaw detection area without obstructing the X-ray transmission. At the same time, the protective shell 202 plays a role in preventing X-ray leakage. It can detect defects such as bubbles and cracks inside the cable in real time with a detection accuracy of ≤0.1mm. If a defect is detected, the PLC control system triggers an alarm and marks the defect location. The rays penetrate the cable in a cone-shaped beam, with energy adjusted according to the cable material (PVC: 80-150kV, XLPE: 150-300kV); Normal areas: X-rays attenuate uniformly, and the detector's received intensity remains stable; Defects (bubbles / cracks / impurities): Bubble: Reduced X-ray attenuation → Enhanced detector signal; Metallic impurities: Increased X-ray attenuation → weakened detector signal; Sensitivity: Capable of detecting minute defects **≥0.1mm**; The detector data is transmitted to the control system, which generates a cross-sectional image of the cable (resolution 0.05mm / pixel) through an algorithm. When a defect is detected, the system triggers an audible and visual alarm, marks the defect location (accuracy ±1cm), and can also shut down the system (requires a preset threshold). Air cooling: The formed cable passes laterally through the inner cavity of the inner liner tube of the air-cooling device 30; the mesh heat dissipation window 308 on the surface of the inner liner tube and the wide-mouth heat dissipation window 309 on the surface of the outer liner tube guide the heat of the cable to the ventilation cavity 307 and the air passage cavity 306. The blowers 303 on the right side of the front and rear sides of the air-cooled device housing 301 blow air into the air passage 306. According to Bernoulli's principle, a low-pressure area is formed in the air passage 306, and a high-pressure area is formed in the ventilation cavity 307 due to the hot air flow. Under the action of the air pressure difference, the hot air in the ventilation cavity 307 accelerates to diffuse into the air passage 306, thereby accelerating heat dissipation. Hot air inside the air cavity 306 is dispersed through the heat exchange windows 302 on the left side of the front and rear sides of the air-cooled device housing 301. The heat exchange window 302 is a water-cooled heat exchange window with heat exchange function. Its inner cavity is filled with water, which is circulated through the circulation device 304. The water pump 304-2 of the circulation device draws water from the water supply source and sends it into the heat exchange window 302 through the water pipe 304-3. After taking away the heat, the hot water is transferred to the outside through the water exchange adapter 304-1 and the water pipe 304-3 for secondary use. The aluminum alloy heat exchange tube 310 on the heat dissipation heat exchange window 302 has good heat absorption performance. When the airflow in the air passage 307 is discharged through the air outlet 311, it exchanges heat with the liquid in the heat exchange tube 310, realizing the secondary collection and utilization of heat. Water cooling: The cable enters the water-cooling device 40 and passes through the inner tube 407 inside the water-cooling shell 401; the spiral heat-absorbing tube 408 is sleeved on the outside of the inner tube 407 and absorbs the heat of the cable through heat conduction to heat the internal circulating coolant. The heated coolant is delivered to the radiator tank 402 through the connecting pipe 406 (see attached). Figure 9 (The direction of flow is indicated by the solid black arrow in the middle); the coolant in the heat dissipation storage tank 402-1 of the heat dissipation tank 402 is cooled down by the heat dissipation integrated fan 402-2 and heat dissipation fin plate on the right side wall, and the cooled coolant is then transported to the spare storage tank 403-1 of the spare water tank 403 for standby. The check valve 404 between the heat sink 402 and the spiral heat absorption pipe 408 ensures unidirectional flow of coolant; the check valve 404-1 prevents coolant backflow; and the suction pump 404-3 assists the coolant to flow from the spiral heat absorption pipe 408 to the heat storage tank 402-1. The liquid pump at the top of the standby water tank 403-1 draws coolant from the heat dissipation water tank 402-1, while the pressurized liquid pump at the bottom pressurizes and pumps the coolant from the standby water tank 403-1 to the spiral heat absorber pipe 408 (see attached). Figure 9 The hollow arrow indicates the direction of flow, enabling the coolant to circulate and ensuring continuous cooling. The top and bottom connecting main pipes 410 and connecting valves 409 of the spiral heat absorber 408 are connected to the heat dissipation water tank 402-1 and the spare water tank 403-1 through connecting pipes 406; the connecting branch pipe 411 between the connecting main pipe 410 and the spiral heat absorber 408 enables simultaneous injection or output of coolant at multiple points, avoiding uneven temperature changes in the spiral heat absorber 408; the flow-guiding cavity 412 of the connecting branch pipe 411 adopts a design that is narrow at both ends and wide in the middle, reducing fluid velocity, reducing turbulence and eddies, reducing energy loss and impact on the pipe wall, and improving coolant transmission efficiency; Extended cooling: The extended cooling pipe 405 has two cooling modes. The first mode involves injecting cooling medium into the filling cavity 405-1, where heat exchange occurs as the cable passes through. The water jacket cooling is achieved by customizing the length of the extended cooling pipe 405. The second mode involves extending the spiral heat absorber pipe 408 to the right and fitting it onto the inner liner pipe 407, increasing the contact area with the cable and improving heat exchange efficiency. The two modes can be switched as needed, and the appropriate length of the spiral heat absorber pipe 408 must be customized when switching. In the first mode, the injection and discharge of cooling medium in the filling cavity 405-1 are controlled by the control valves 405-2 at the bottom and rear. System control: The control system consists of a programmable logic controller (PLC) and detection sensors; The air pressure-temperature detection sensors on the side walls of the air passage 306 and the ventilation 307 of the air-cooling device 30 detect the air pressure and temperature in real time; the liquid level-water temperature detection sensor inside the heat dissipation exchange window 302 detects the water level and water temperature. The liquid level and temperature detection sensors inside the spiral heat absorption tube 408, heat dissipation tank 402, and spare water tank 403 of the water cooling device 40 monitor the liquid level and temperature of the coolant in real time. When the sensors detect that the temperature of various parts rises to the preset value, the system will issue an alert or actively complete the corresponding command action through the actuator connected to the control system to ensure the normal operation of the device and effective heat dissipation.

[0019] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or basic characteristics. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of the invention is defined by the appended claims rather than the foregoing description. Therefore, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention, and no reference numerals in the claims should be construed as limiting the scope of the claims.

[0020] 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. An extrusion molding apparatus for cable manufacturing, characterized in that: It includes an extruder (10) and a flaw detection-heat dissipation system, the flaw detection-heat dissipation system including a flaw detection device (20), an air cooling device (30) and a water cooling device (40); an extrusion tube (101) is installed on the right side of the extruder (10); the flaw detection device (20) includes a radiation generator (201) and a protective shell (202), a glass tube is installed inside the protective shell (202), the glass tube is connected to the extrusion tube (101) to the left, and the extruded cable is transmitted to the flaw detection device (20) to the right through the extrusion tube (101); The air-cooled device (30) includes an air-cooled device shell (301), a heat exchange window (302), a blower (303), and a circulation device (304). The inner cavity of the air-cooled device shell (301) is provided with two layers of inner lining tubes. An air passage cavity (306) is reserved between the outer inner lining tube and the air-cooled device shell (301), and a ventilation cavity (307) is reserved between the inner inner lining tube and the outer inner lining tube. The heat exchange window (302) is a water-cooled exchange window with heat exchange function. The inner liner tube has a uniformly arranged grid-type heat dissipation windows (308) on its surface; the outer liner tube has a uniformly arranged wide-mouth heat dissipation windows (309) on its surface; the opening diameter of the wide-mouth heat dissipation windows (309) is 2-5 times the opening diameter of the grid-type heat dissipation windows (308); the grid-type heat dissipation windows (308) and the wide-mouth heat dissipation windows (309) are responsible for guiding the heat on the formed cable to the ventilation cavity (307) and the air passage cavity (306) for diffusion; Blowers (303) are symmetrically installed on the right side of the front and rear sides of the air-cooling device housing (301). The air-cooling device housing (301) and the blowers (303) are connected by mounting grooves, and rubber sealing rings are installed at the contact points between the edges of the mounting grooves and the blowers (303). A fixing frame is installed below the blowers (303), and a blower drive motor is installed on the top of the fixing frame. A metal mesh (305) is installed on the blowers (303). The water cooling device (40) includes a water cooling shell (401), a circulating heat dissipation system and an extended cooling pipe (405). The circulating heat dissipation system includes a heat dissipation tank (402), a spare water tank (403), a spiral heat absorption pipe (408) and a connecting pipe (406). The circulating heat dissipation system is filled with circulating coolant, and the coolant is transferred through the connecting pipe (406). A control system is provided in conjunction with the flaw detection-heat dissipation system. The control system includes a programmable logic controller (PLC) and detection sensors installed in the device. Air pressure-temperature detection sensors are installed on the side walls of the air passage cavity (306) and ventilation cavity (307) of the air-cooling device (30), and liquid level-water temperature detection sensors are installed in the inner cavity of the heat dissipation exchange window (302). Liquid level-water temperature detection sensors are installed in the inner cavities of the spiral heat absorption tube (408), heat dissipation tank (402), and spare water tank (403) of the water cooling device (40). When the temperature rises to the preset value, the actuator connected to the control system actively completes the command action.

2. The extrusion molding apparatus for cable manufacturing according to claim 1, characterized in that: The blower (303) blows air into the air passage (306), which will form a low-pressure area in the air passage (306), while a high-pressure area is formed in the ventilation cavity (307) due to the hot air flow. Under the action of the air pressure difference, the air in the high-pressure area will accelerate to flow to the low-pressure area, which will accelerate the diffusion of hot air in the ventilation cavity (307) into the air passage (306), thereby accelerating the heat dissipation.

3. The extrusion molding apparatus for cable manufacturing according to claim 2, characterized in that: The air-cooled device housing (301) has heat exchange windows (302) symmetrically installed on the left side of the front and rear sides. The heat exchange windows (302) are connected to the air passage cavity (306) inward, and the hot air in the air passage cavity (306) is dispersed out through the heat exchange windows (302). The inner cavity of the heat exchange window (302) is hollow and filled with a cooling medium. A circulation device (304) is installed below the heat exchange window (302). The circulation device (304) includes a water exchange adapter (304-1), a water pump (304-2), and a water pipe (304-3). The water exchange adapter (304-1) is installed at the bottom of the heat exchange window (302) and is connected to the inner cavity of the heat exchange window (302). Connected; the water exchange adapter (304-1) is equipped with two water pipes (304-3), one for water inlet and one for water outlet; the water pipe (304-3) for water inlet is connected to the water pump (304-2), and the water inlet of the water pump (304-2) is connected to the water supply source through the water pipe (304-3). The water outlet of the water exchange adapter (304-1) is connected to the outside through the water pipe (304-3) to transfer the heated water to the outside for secondary use; The heat exchange window (302) is evenly distributed with exchange pipes (310), which are made of aluminum alloy. An air outlet (311) is reserved between adjacent exchange pipes (310). When the airflow passes through the exchange pipe (310), it exchanges heat with the liquid inside.

4. The extrusion molding apparatus for cable manufacturing according to claim 1, characterized in that: The inner cavity of the water-cooled outer shell (401) is provided with an inner tube (407), and the molded cable passes through the inner cavity of the inner tube (407); the spiral heat absorption tube (408) is sleeved on the outside of the inner tube (407) and heat exchange is carried out through heat conduction. The heat dissipation tank (402) is installed on the top of the water-cooled shell (401); the heat dissipation tank (402) includes a heat dissipation storage tank (402-1) and a heat dissipation integrated fan (402-2), the heat dissipation integrated fan (402-2) is installed on the right side wall of the heat dissipation storage tank (402-1), and a finned plate is also installed between the heat dissipation integrated fan (402-2) and the heat dissipation storage tank (402-1); A check device (404) is installed between the heat dissipation tank (402) and the spiral heat absorption pipe (408). The check device (404) includes a check valve (404-1), a support base (404-2), and a suction pump (404-3). The support base (404-2) is installed at the bottom of the check valve (404-1). The suction pump (404-3) is installed between the check valve (404-1) and the heat dissipation tank (402-1) and is connected to each other through a connecting pipe (406).

5. The extrusion molding apparatus for cable manufacturing according to claim 4, characterized in that: The backup water tank (403) is installed on the front side of the water-cooled outer shell (401); the backup water tank (403) includes a backup water storage tank (403-1) and a heat dissipation fin plate (403-2). The heat dissipation fin plate (403-2) is installed on the front side of the backup water storage tank (403-1) to increase the heat dissipation efficiency of the surface of the backup water storage tank (403-1); a liquid pump is installed on the top of the backup water storage tank (403-1), and the liquid pump is connected to the heat dissipation water storage tank (402-1) through a connecting pipe (406). The liquid pump is responsible for drawing out the coolant in the heat dissipation water storage tank (402-1); The bottom of the backup water tank (403-1) is equipped with a pressurized liquid pump. The pressurized liquid pump is connected to the spiral heat absorption pipe (408) through a connecting pipe (406). The pressurized liquid pump is responsible for pressurizing and pumping the coolant in the backup water tank (403-1) to the spiral heat absorption pipe (408).

6. The extrusion molding apparatus for cable manufacturing according to claim 5, characterized in that: The top and bottom of the spiral heat absorption tube (408) are provided with a transfer main pipe (410), and the side of the transfer main pipe (410) away from the spiral heat absorption tube (408) is provided with a transfer valve (409). The transfer valve (409) is connected to the heat dissipation water storage tank (402-1) and the spare water storage tank (403-1) through the connecting pipe (406). Multiple transfer pipes (411) are distributed between the main transfer pipe (410) and the spiral heat absorber (408). The transfer pipes (411) are connected to the spiral heat absorber (408) from different positions to realize simultaneous injection or output of the spiral heat absorber (408) at multiple points. Each of the aforementioned connecting pipes (411) is provided with a drainage cavity (412), the drainage cavity (412) is connected to the spiral heat absorption pipe (408), and a one-way valve is installed at the contact position between each drainage cavity (412) and the spiral heat absorption pipe (408); the drainage cavity (412) adopts a design that is narrow at both ends and wide in the middle.

7. The extrusion molding apparatus for cable manufacturing according to claim 1, characterized in that: The inner cavity of the extended cooling pipe (405) is also provided with an inner liner (407), and a filling cavity (405-1) is reserved between the extended cooling pipe (405) and the inner liner (407); a control valve (405-2) is installed at the bottom and rear side of the extended cooling pipe (405) respectively, which is responsible for injecting and discharging the cooling medium in the filling cavity (405-1); a discharge port (50) is opened on the right side of the extended cooling pipe (405). Cooling medium is injected into the filling cavity (405-1), which can achieve heat exchange when the formed cable passes through. Moreover, the length of the extended cooling pipe (405) can be customized as needed. By extending the length of the extended cooling pipe (405), the purpose of water jacket cooling is achieved. In conjunction with the device on the left, the temperature of the formed cable is effectively reduced in an orderly manner.

8. The extrusion molding apparatus for cable manufacturing according to claim 4, characterized in that: The spiral heat-absorbing tube (408) is responsible for absorbing heat and then transporting the coolant to the heat dissipation tank (402). The heat dissipation tank (402) is responsible for cooling the heated coolant and transporting the cooled coolant to the standby tank (403) for standby. When the coolant in the spiral heat-absorbing tube (408) is transported out, new low-temperature coolant is immediately injected from the standby tank (403) to realize the cycle of cooling process. The three storage containers can realize the cooling operation without interval.

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