Fireproof cable and manufacturing equipment thereof

Abstract

The invention relates to the technical field of cable manufacturing, discloses a fireproof cable and cable equipment thereof, and solves the problems that the thickness of a fireproof layer is different, the fireproof capability is reduced and potential safety hazards exist due to the fact that the fireproof layer is eccentrically wrapped due to the fact that an existing cable extruding machine is prone to skew during fireproof layer extrusion, the wrapping uniformity is reduced and the fireproof layer is eccentrically wrapped. The device comprises a cable extruding machine, the cable extruding machine can melt and plasticize ceramic fire-resistant silicone rubber doped with microcapsule fire-extinguishing particles, the ceramic fire-resistant silicone rubber doped with the microcapsule fire-extinguishing particles can form a fireproof layer, a bottom plate is fixedly installed at the bottom of the cable extruding machine, and an extruding head is fixedly installed at one end of the cable extruding machine; the cable extruding machine can be used for trimming an extruded and coated fireproof layer, improving the coating uniformity, preventing the fireproof layer from being eccentrically coated, and ensuring the thickness consistency of the fireproof layer, so that the fireproof capability is improved, the potential safety hazard is reduced, and the safety stability of the cable in a fire environment is enhanced.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of cable manufacturing, and particularly relates to a fireproof cable and a manufacturing device thereof. BACKGROUND

[0002] The fireproof cable is a special cable with fire resistance and fire resistance characteristics, and is designed to maintain line integrity, delay fire spread and ensure continuous operation of key equipment when a fire occurs. Such a cable usually uses a fire-retardant material as an insulating layer, a sheath and a filler, or adds a fire-resistant layer (such as a mica tape) to enhance the high-temperature resistance, and some types can even maintain power supply for more than 180 minutes in a flame. The application field is wide, covering fire-fighting systems and emergency lighting in densely populated places such as high-rise buildings, subways, hospitals, power transmission in high-temperature and high-risk industrial environments such as petroleum and chemical industry and steel smelting, and scenes with strict safety requirements such as transportation (such as high-speed rail and airplanes) and energy facilities (such as nuclear power plants), to gain critical time for personnel evacuation and rescue, and significantly reduce fire loss. The existing cable extruding machine is prone to tilting when extruding the fireproof layer, which reduces the uniformity of the coating, causes the fireproof layer to be eccentrically wrapped, and thus causes the fireproof layer to have different thicknesses and reduces the fireproof ability, which has safety hazards and seriously affects the safety and stability of the cable in a fire environment. SUMMARY

[0003] In view of the above problems, the fireproof cable and the manufacturing device thereof are provided to effectively solve the problem that the existing cable extruding machine is prone to tilting when extruding the fireproof layer, which reduces the uniformity of the coating, causes the fireproof layer to be eccentrically wrapped, and thus causes the fireproof layer to have different thicknesses and reduces the fireproof ability, which has safety hazards and seriously affects the safety and stability of the cable in a fire environment.

[0004] To achieve the above purpose, the application provides the following technical scheme: a fireproof cable and a manufacturing device thereof, comprising a cable extruding machine, the cable extruding machine can melt and plasticize ceramicized fire-resistant silicone rubber doped with microcapsule fire extinguishing particles, the ceramicized fire-resistant silicone rubber doped with microcapsule fire extinguishing particles can form a fireproof layer, a bottom plate is fixedly installed at the bottom of the cable extruding machine, an extruding head is fixedly installed at one end of the cable extruding machine, a concentric twisted wire is inserted into the inside of the extruding head, first and second equipment frames are arranged at the two ends above the bottom plate, the bottom parts of the first and second equipment frames are fixedly connected with the top part of the bottom plate through fixing legs, upper rollers are arranged at the upper parts in the first and second equipment frames, first and second rollers are arranged at the lower parts in the first and second equipment frames, a mounting cylinder is fixedly installed at the middle part of the top of the bottom plate, two trimming rollers are arranged in the inside of the mounting cylinder. The rear side of the first equipment frame is fixedly installed with a connecting frame, one side of the connecting frame is fixedly installed with a servo motor, the output end of the servo motor is provided with a transmission assembly, the transmission assembly is in transmission connection with the first roller, the second roller, the two upper rollers and the two trimming rollers, and the servo motor drives the first roller, the second roller, the two upper rollers and the two trimming rollers to rotate through the transmission assembly when the servo motor operates, so as to convey the concentric stranded wire and trim the coated fireproof layer.

[0005] Preferably, the top of the first equipment frame is fixedly installed with a laser diameter measuring instrument, and the concentric stranded wire passes through the laser diameter measuring instrument, one end of the top of the bottom plate is fixedly installed with a cable marking machine, the upper part of the cable extruding machine is installed with a PLC logic controller, and the PLC logic controller is connected with the cable extruding machine, the servo motor, the laser diameter measuring instrument and the cable marking machine through a wireless transmission module.

[0006] Preferably, the transmission assembly comprises a driving bevel gear fixedly installed at the output end of the servo motor, one side of the driving bevel gear is fixedly installed with a first rotating shaft, one end of the first rotating shaft extends to the inside of the first equipment frame and is fixedly connected with the first roller, and the surface of the first rotating shaft is rotationally connected with the first equipment frame through a first bearing.

[0007] Preferably, one side of the first roller away from the first rotating shaft is fixedly installed with a right shaft rod, one end of the right shaft rod extends to the outside of the first equipment frame and is fixedly installed with a first lower gear, the surface of the right shaft rod is rotationally connected with the first equipment frame through a right shaft sleeve, one end of the right shaft rod is fixedly installed with a driving sprocket through the first lower gear, the lower part of the front side of the second equipment frame is rotationally installed with a left shaft rod through a left shaft sleeve, one end of the left shaft rod is fixedly installed with a driven sprocket through a second lower gear, and the chain is meshingly connected between the driven sprocket and the driving sprocket.

[0008] Preferably, the inside of the chain is meshingly connected with three auxiliary wheels at equal distances, the lower part between the three auxiliary wheels is rotationally installed with a support frame through a rotating frame, and the bottom of the support frame is fixedly connected with the top of the bottom plate.

[0009] Preferably, the upper part of the first lower gear and the second lower gear is meshingly connected with an upper gear, one side of the two upper gears is fixedly installed with a second rotating shaft, the surface of the two second rotating shafts is rotationally connected with the upper part of the front part of the first equipment frame and the second equipment frame through a second bearing, one end of the two second rotating shafts extends to the inside of the first equipment frame and the second equipment frame and is fixedly connected with the upper roller, and one side of the two upper rollers is rotationally connected with the inside of the first equipment frame and the second equipment frame.

[0010] Preferably, one side of the driving bevel gear surface is connected with a driven bevel gear, one side of the driven bevel gear is fixedly provided with a rotating rod, one end of the rotating rod surface is rotatably connected with the connecting frame through an axle seat, the other end of the rotating rod is fixedly provided with a transmission gear, one side of the transmission gear is rotatably connected with the mounting cylinder through a rotating seat, the surface of the transmission gear is covered with a protective cover, and one side of the protective cover is fixedly connected with the mounting cylinder through a connecting rod.

[0011] Preferably, the circumferential surface of the transmission gear is connected with an outer gear ring, one side of the outer gear ring is fixedly provided with a sleeve, the sleeve is rotatably installed in the inside of the mounting cylinder, one end of the sleeve inner wall is rotatably connected with two trimming rollers, one end of each of the two trimming rollers is fixedly provided with a driven gear, one side of each of the two driven gears is rotatably connected with the other end of the sleeve inner wall, and the surfaces of the two driven gears are rotatably connected with an inner gear ring, and the circumferential surface of the inner gear ring is fixedly connected with the inside of the sleeve.

[0012] A fireproof cable is manufactured according to a fireproof cable manufacturing device.

[0013] Preferably, the fireproof cable comprises a concentric stranded wire and a fireproof layer extruded on the surface of the concentric stranded wire, the ceramicized fire-resistant silicone rubber in the fireproof layer completely wraps the concentric stranded wire to form a basic unit of conduction and insulation, and the microcapsule fire extinguishing particles embedded in the ceramicized fire-resistant silicone rubber can improve the fireproof performance.

[0014] Compared with the prior art, the fireproof cable manufacturing device has the following beneficial effects: (1) During manufacturing, an operator starts a cable extruder, and extrudes the fireproof layer material on the surface of the concentric stranded wire through an extrusion head; at the same time, a servo motor is started to drive the driving bevel gear to rotate, the driving bevel gear drives the first roller to rotate through the first rotating shaft, the first roller drives the first lower gear to rotate through the right shaft rod when rotating, the first lower gear drives the driving sprocket to rotate, the driving sprocket drives the driven sprocket to rotate through the chain, the chain drives the three auxiliary wheels to rotate when rotating, the three auxiliary wheels can support the chain to ensure the stability of the chain when rotating, and the driven sprocket drives the left shaft rod to rotate through the second lower gear when rotating, the left shaft rod drives the second roller to rotate when rotating. The first lower gear and the second lower gear drive the two second rotating shafts to rotate through the two upper gears when rotating, the two second rotating shafts drive the two upper rollers to rotate when rotating, and the first roller, the second roller and the two upper rollers can convey the concentric stranded wire when rotating simultaneously, thereby realizing the continuous wrapping of the fireproof layer on the concentric stranded wire. (2), the driving bevel gear rotates, the driving bevel gear can also drive the rotating rod to rotate, the rotating rod rotates, and the outer gear is driven to rotate through the transmission gear, the outer gear rotates, and the sleeve rotates in the inside of the installation cylinder, the sleeve rotates, and the two finishing rollers revolve along the sleeve, the two finishing rollers work, and the two driven gears rotate along the inner tooth ring, so that the two driven gears drive the two finishing rollers to rotate under the meshing of the inner tooth ring, so that the fireproof layer on the concentric wire is finished, and the fireproof layer is evenly coated;Through the linkage of conveying and finishing, the processing rhythm of conveying and finishing can be guaranteed, so that the finishing capacity is improved, and the influence of conveying speed on finishing is reduced; (3), in the process of conveying, the laser diameter measuring instrument can monitor the coating diameter in real time, and the data is transmitted to the PLC logic controller in real time;If there is deviation, the PLC logic controller will control the cable marking machine to mark the deviation, which is convenient for subsequent repair and prevents defects; (4), so that the cable extruder can finish the fireproof layer of the extruded coating, improve the uniformity of the coating, prevent the eccentric wrapping of the fireproof layer, ensure the uniformity of the fireproof layer thickness, improve the fireproof ability, reduce the safety hazard, and enhance the safety and stability of the cable in the fire environment. BRIEF DESCRIPTION OF DRAWINGS

[0015] The accompanying drawings are intended to provide a further understanding of the present application, and constitute a part of the specification, together with the embodiments of the present application, to explain the present application, and do not constitute a limitation of the present application.

[0016] In the drawings: Figure 1 The structure of the cable manufacturing equipment of the present application is shown Figure 1 ; Figure 2 The structure of the cable manufacturing equipment of the present application is shown Figure 2 ; Figure 3 The structure of the cable manufacturing equipment of the present application is shown Figure 2 ; Figure 4 The structure of the cable manufacturing equipment of the present application is shown Figure 5 The structure of the cable manufacturing equipment of the present application is shown Figure 6 The structure of the cable manufacturing equipment of the present application is shown Figure 7 The structure of the cable manufacturing equipment of the present application is shown Figure 8 The structure of the cable manufacturing equipment of the present application is shown Figure 7 ; In the diagram: 1. Cable extruder; 2. Base plate; 3. Extrusion head; 4. Second equipment frame; 5. First equipment frame; 6. Driven gear; 7. Mounting cylinder; 8. Laser diameter gauge; 9. Cable marking machine; 10. Connecting frame; 11. Servo motor; 12. Fixed leg; 13. Upper roller; 14. Second roller; 15. Dressing roller; 16. Drive bevel gear; 17. First rotating shaft; 18. First bearing; 19. First roller; 20. Right shaft; 21. Right bushing; 22. First lower... 23. Gear; 24. Drive sprocket; 25. Driven sprocket; 26. Second lower gear; 27. Chain; 28. Auxiliary wheel; 29. ​​Left shaft; 30. Left bushing; 31. Upper gear; 32. Driven bevel gear; 33. Rotating rod; 34. Shaft seat; 35. Transmission gear; 36. Rotating seat; 37. Connecting rod; 38. Protective cover; 39. External gear ring; 40. Sleeve; 41. Support frame; 42. Concentric stranded wire; 43. Second rotating shaft; 44. Second bearing. 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. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0018] Example 1, by Figures 1 to 8 The present invention includes a cable extruder 1, which can melt and plasticize ceramicized fire-resistant silicone rubber containing microcapsule fire extinguishing particles. The ceramicized fire-resistant silicone rubber containing microcapsule fire extinguishing particles can form a fireproof layer. A base plate 2 is fixedly installed at the bottom of the cable extruder 1, and the base plate 2 is supported by the ground to ensure the overall stability of the equipment. An extrusion head 3 is fixedly installed at one end of the cable extruder 1. A concentric stranded wire 42 is inserted inside the extrusion head 3. The extrusion head 3 can extrude the ceramicized fire-resistant silicone rubber containing microcapsule fire extinguishing particles from the cable extruder 1 and coat it onto the concentric stranded wire 42. A first equipment frame 5 and a second equipment frame 4 are provided at both ends above the base plate 2. The bottom of the first equipment frame 5 and the second equipment frame 4 are fixedly connected to the top of the base plate 2 by the fixed legs 12 to ensure the stability of the installation of the first equipment frame 5 and the second equipment frame 4. The upper part of the inside of the first equipment frame 5 and the second equipment frame 4 are provided with upper rollers 13, and the lower part of the inside of the first equipment frame 5 and the second equipment frame 4 are respectively provided with first rollers 19 and second rollers 14. When the two upper rollers 13, the first rollers 19 and the second rollers 14 rotate, they can drive the concentric strand 42 to move. The mounting cylinder 7 is fixedly installed in the middle of the top of the base plate 2. The mounting cylinder 7 is provided with two trimming rollers 15. The two trimming rollers 15 can trim the material extruded and coated on the concentric strand 42 evenly. A connecting frame 10 is fixedly installed on the rear side of the first equipment frame 5. A servo motor 11 is fixedly installed on one side of the connecting frame 10. The servo motor 11 can output rotational power stably and accurately. The output end of the servo motor 11 is provided with a transmission component. The transmission component is connected to the first roller 19, the second roller 14, the two upper rollers 13 and the two trimming rollers 15. When the servo motor 11 is running, it drives the first roller 19, the second roller 14, the two upper rollers 13 and the two trimming rollers 15 to rotate through the transmission component, thereby conveying the concentric stranded wire 42 and trimming the fireproof layer.

[0019] During manufacturing, the operator starts the cable extruder 1 and extrudes the fireproof layer material through the extrusion head 3 to cover the surface of the concentric stranded wire 42; at the same time, the operator starts the servo motor 11 to drive the transmission component to rotate. When the transmission component rotates, it drives the first roller 19, the second roller 14 and the two upper rollers 13 to rotate simultaneously, thereby conveying the concentric stranded wire 42 and achieving continuous coverage of the fireproof layer on the concentric stranded wire 42. While the transmission components are operating, they also drive the two trimming rollers 15 to revolve around the central axis and rotate on their own axis, thereby trimming the fireproof layer covering the concentric stranded wire 42 to make it uniformly covered. Through the linkage setting of conveying and trimming, the processing rhythm of conveying and trimming can be guaranteed, thereby improving trimming ability and reducing the impact of conveying speed on trimming. This allows the cable extruder 1 to trim the extruded fireproof layer, improve its uniformity, prevent the fireproof layer from being wrapped eccentrically, ensure the fireproof layer thickness is consistent, improve fire resistance, reduce safety hazards, and enhance the safety and stability of the cable in a fire environment.

[0020] In Example 2, based on Example 1, a laser diameter gauge 8 is fixedly installed on the top of the first equipment frame 5, and a concentric stranded wire 42 passes through the laser diameter gauge 8. The laser diameter gauge 8 can use a laser beam to scan the surface of the cable and calculate the cable diameter in real time by measuring the time difference or phase difference of the reflected light. A cable marking machine 9 is fixedly installed at one end of the top of the base plate 2. The cable marking machine 9 can mark the positions that are not qualified by the laser diameter gauge 8 for subsequent repair. A PLC logic controller is installed on the upper part of the cable extruder 1. The PLC logic controller is connected to the cable extruder 1, servo motor 11, laser diameter gauge 8 and cable marking machine 9 through a wireless transmission module. The laser diameter gauge 8 transmits the detected data to the PLC logic controller in real time. After receiving the unqualified signal, the PLC logic controller will control the cable marking machine 9 to mark the cable.

[0021] The servo motor 11 and the cable extruder 1 can be synchronously controlled by the PLC logic controller. By synchronously operating the conveying and extrusion, the processing rhythm of conveying and extrusion can be guaranteed, thereby improving the uniformity of coating and reducing the impact of conveying speed on extrusion processing. During the conveying process, the laser diameter gauge 8 will monitor the wrapping diameter in real time and transmit the data to the PLC logic controller in real time. If there is a deviation, the PLC logic controller will control the cable marking machine 9 to mark the deviation point to facilitate subsequent repairs and prevent defects.

[0022] In Embodiment 3, based on Embodiment 1, the transmission assembly includes a drive bevel gear 16 fixedly installed at the output end of the servo motor 11, enabling the servo motor 11 to drive the drive bevel gear 16 to rotate. A first rotating shaft 17 is fixedly installed on one side of the drive bevel gear 16. One end of the first rotating shaft 17 extends into the interior of the first device frame 5 and is fixedly connected to the first roller 19, enabling the first rotating shaft 17 to drive the first roller 19 to rotate. The surface of the first rotating shaft 17 is rotatably connected to the first device frame 5 through a first bearing 18, and the first rotating shaft 17 can be rotated and positioned through the first bearing 18. A right shaft 20 is fixedly installed on the side of the first roller 19 away from the first rotating shaft 17. One end of the right shaft 20 extends to the outside of the first equipment frame 5 and is fixedly installed with a first lower gear 22. The surface of the right shaft 20 is rotatably connected to the first equipment frame 5 through a right bushing 21. The right bushing 21 is used to rotate and position the right shaft 20. One end of the right shaft 20 is fixedly installed with a drive sprocket 23 through the first lower gear 22. A left shaft 28 is rotatably installed on the lower front side of the second equipment frame 4 through a left bushing 29. The left shaft 28 is rotated and positioned through the left bushing 29. One end of the left shaft 28 is fixedly installed with a driven sprocket 24 through a second lower gear 25. A chain 26 meshes between the driven sprocket 24 and the drive sprocket 23. The chain 26 can transmit the power of the drive sprocket 23 to the driven sprocket 24.

[0023] The servo motor 11 is started, which drives the active bevel gear 16 to rotate. The active bevel gear 16 drives the first roller 19 to rotate through the first rotating shaft 17. When the first roller 19 rotates, it drives the first lower gear 22 to rotate through the right shaft 20. When the first lower gear 22 rotates, it drives the active sprocket 23 to rotate. The active sprocket 23 drives the driven sprocket 24 to rotate through the chain 26. When the driven sprocket 24 rotates, it drives the left shaft 28 to rotate through the second lower gear 25. When the left shaft 28 rotates, it drives the second roller 14 to rotate.

[0024] The chain 26 has three auxiliary wheels 27 that are equidistantly meshed inside. The three auxiliary wheels 27 can provide support for the chain 26 to ensure the stability of the chain 26 transmission. The lower parts of the three auxiliary wheels 27 are rotatably mounted on a support frame 41 through a rotating frame, so that the three auxiliary wheels 27 can rotate on the support frame 41. The bottom of the support frame 41 is fixedly connected to the top of the base plate 2.

[0025] When the chain 26 rotates, it will drive the three auxiliary wheels 27 to rotate as well. The three auxiliary wheels 27 can support the chain 26 to ensure the stability of the chain 26 when it rotates.

[0026] The upper parts of the first lower gear 22 and the second lower gear 25 are both meshed with upper gears 30. A second rotating shaft 43 is fixed to one side of each of the two upper gears 30. The surfaces of the two second rotating shafts 43 are rotatably connected to the upper front part of the first equipment frame 5 and the second equipment frame 4 through second bearings 44. The two second bearings 44 can rotate and position the two second rotating shafts 43. One end of each of the two second rotating shafts 43 extends into the interior of the first equipment frame 5 and the second equipment frame 4 and is fixedly connected to the upper rollers 13. One side of each of the two upper rollers 13 is rotatably connected to the interior of the first equipment frame 5 and the second equipment frame 4 to ensure the stability of the two upper rollers 13 when rotating.

[0027] When the first lower gear 22 and the second lower gear 25 rotate, they drive the two second rotating shafts 43 to rotate through the two upper gears 30. When the two second rotating shafts 43 rotate, they drive the two upper rollers 13 to rotate. When the first roller 19, the second roller 14 and the two upper rollers 13 rotate at the same time, the concentric stranded wire 42 can be conveyed, thereby realizing the continuous coating of the fireproof layer of the concentric stranded wire 42.

[0028] One side of the surface of the driving bevel gear 16 is meshed with the driven bevel gear 31. The cooperation between the driven bevel gear 31 and the driving bevel gear 16 can change the direction of rotational transmission. A rotating rod 32 is fixedly installed on one side of the driven bevel gear 31. One end of the surface of the rotating rod 32 is rotatably connected to the connecting frame 10 through the bearing 33. The bearing 33 rotates and positions the rotating rod 32. A transmission gear 34 is fixedly installed on the other end of the rotating rod 32. One side of the transmission gear 34 is rotatably connected to the mounting cylinder 7 through the rotating seat 35, so that the transmission gear 34 rotates along the rotating seat 35 to ensure its rotational stability. The surface of the transmission gear 34 is covered with a protective cover 37. The protective cover 37 can protect the transmission gear 34 and reduce safety hazards. One side of the protective cover 37 is fixedly connected to the mounting cylinder 7 through the connecting rod 36. The circumferential surface of the transmission gear 34 is meshed with an external gear ring 38. A sleeve 40 is fixedly installed on one side of the external gear ring 38, and the sleeve 40 is rotatably installed inside the mounting cylinder 7, so that the transmission gear 34 can drive the sleeve 40 to rotate through the external gear ring 38. The inner wall of one end of the sleeve 40 is rotatably connected to two trimming rollers 15. When the sleeve 40 rotates, it can drive the two trimming rollers 15 to revolve. A driven gear 6 is fixedly installed on one end of each of the two trimming rollers 15. One side of each of the two driven gears 6 is rotatably connected to the inner wall of the other end of the sleeve 40. An internal gear ring 39 is meshed between the surfaces of the two driven gears 6. When the two driven gears 6 revolve, they can rotate on their own axis through the cooperation of the internal gear ring 39. The circumferential surface of the internal gear ring 39 is fixedly connected to the inside of the sleeve 40.

[0029] While the driving bevel gear 16 rotates, it can also drive the rotating rod 32 to rotate through the driven bevel gear 31. When the rotating rod 32 rotates, it drives the outer gear ring 38 to rotate through the transmission gear 34. When the outer gear ring 38 rotates, it drives the sleeve 40 to rotate inside the mounting cylinder 7. When the sleeve 40 rotates, it drives the two trimming rollers 15 to revolve in a circle around the sleeve 40. While the two trimming rollers 15 are working, they also drive the two driven gears 6 to rotate along the inner gear ring 39. Thus, under the meshing of the inner gear ring 39, the two driven gears 6 drive the two trimming rollers 15 to rotate, thereby trimming the fireproof layer covering the concentric stranded wire 42 to make it evenly covered. Through the linkage setting of conveying and trimming, the processing rhythm of conveying and trimming can be guaranteed, thereby improving trimming capacity and reducing the impact of conveying speed on trimming.

[0030] A fire-resistant cable is manufactured using a fire-resistant cable manufacturing equipment. The fire-resistant cable includes concentric stranded wires 42 and a fire-resistant layer extruded and coated on their surface. The ceramicized fire-resistant silicone rubber in the fire-resistant layer completely encapsulates the concentric stranded wires 42, forming a basic unit for conduction and insulation. The microcapsule fire extinguishing particles embedded in the ceramicized fire-resistant silicone rubber can improve the fire resistance. The ceramicized silicone rubber is flexible at room temperature, which facilitates cable bending and installation. In the event of a fire, it hardens into a ceramic shell, which is tightly bonded to the conductor to prevent the insulation layer from falling off. The microcapsule fire extinguishing particles in the fire-resistant layer can quickly release fire extinguishing agents when there is local overheating, suppressing the fire around the conductor.

Claims

1. A fire-resistant cable manufacturing equipment, comprising a cable extruder (1), characterized in that: The cable extruder (1) can melt and plasticize ceramicized fire-resistant silicone rubber doped with microcapsule fire extinguishing particles. The ceramicized fire-resistant silicone rubber doped with microcapsule fire extinguishing particles can form a fireproof layer. The bottom of the cable extruder (1) is fixedly installed with a base plate (2). One end of the cable extruder (1) is fixedly installed with an extrusion head (3). The extrusion head (3) is inserted with a concentric stranded wire (42). The two ends above the base plate (2) are provided with a first equipment frame (5) and a second equipment frame (4). The bottom of the first equipment frame (5) and the second equipment frame (4) are fixedly connected to the top of the base plate (2) through a fixed leg (12). The upper part of the first equipment frame (5) and the second equipment frame (4) are provided with an upper roller (13). The lower part of the first equipment frame (5) and the second equipment frame (4) are respectively provided with a first roller (19) and a second roller (14). The middle part of the top of the base plate (2) is fixedly installed with an installation cylinder (7). The installation cylinder (7) is provided with two trimming rollers (15). A connecting frame (10) is fixedly installed on the rear side of the first equipment frame (5). A servo motor (11) is fixedly installed on one side of the connecting frame (10). A transmission component is provided at the output end of the servo motor (11). The transmission component is connected to the first roller (19), the second roller (14), the two upper rollers (13), and the two trimming rollers (15). When the servo motor (11) is running, it drives the first roller (19), the second roller (14), the two upper rollers (13), and the two trimming rollers (15) to rotate through the transmission component, thereby conveying the concentric stranded wire (42) and trimming the fireproof layer.

2. The fire-resistant cable manufacturing equipment according to claim 1, characterized in that: A laser diameter gauge (8) is fixedly installed on the top of the first equipment frame (5), and a concentric stranded wire (42) passes through the laser diameter gauge (8). A cable marking machine (9) is fixedly installed at one end of the top of the base plate (2). A PLC logic controller is installed on the upper part of the cable extruder (1). The PLC logic controller is connected to the cable extruder (1), servo motor (11), laser diameter gauge (8) and cable marking machine (9) through a wireless transmission module.

3. The fire-resistant cable manufacturing equipment according to claim 1, characterized in that: The transmission assembly includes a drive bevel gear (16) fixedly installed at the output end of the servo motor (11). A first rotating shaft (17) is fixedly installed on one side of the drive bevel gear (16). One end of the first rotating shaft (17) extends into the interior of the first device frame (5) and is fixedly connected to the first roller (19). The surface of the first rotating shaft (17) is rotatably connected to the first device frame (5) through the first bearing (18).

4. The fire-resistant cable manufacturing equipment according to claim 3, characterized in that: The first roller (19) is fixedly mounted with a right shaft (20) on the side away from the first rotating shaft (17). One end of the right shaft (20) extends to the outside of the first equipment frame (5) and is fixedly mounted with a first lower gear (22). The surface of the right shaft (20) is rotatably connected to the first equipment frame (5) through a right bushing (21). One end of the right shaft (20) is fixedly mounted with a drive sprocket (23) through the first lower gear (22). The lower part of the front side of the second equipment frame (4) is rotatably mounted with a left shaft (28) through a left bushing (29). One end of the left shaft (28) is fixedly mounted with a driven sprocket (24) through a second lower gear (25). A chain (26) meshes between the driven sprocket (24) and the drive sprocket (23).

5. The fire-resistant cable manufacturing equipment according to claim 4, characterized in that: The chain (26) has three auxiliary wheels (27) meshing at equal intervals inside. The lower parts of the three auxiliary wheels (27) are connected by a rotating frame and a support frame (41) is rotatably mounted. The bottom of the support frame (41) is fixedly connected to the top of the base plate (2).

6. The fire-resistant cable manufacturing equipment according to claim 4, characterized in that: The upper parts of the first lower gear (22) and the second lower gear (25) are meshed with upper gears (30). The two upper gears (30) are fixed with a second rotating shaft (43) on one side. The surfaces of the two second rotating shafts (43) are rotatably connected to the upper front part of the first equipment frame (5) and the second equipment frame (4) through the second bearing (44). One end of the two second rotating shafts (43) extends into the interior of the first equipment frame (5) and the second equipment frame (4) respectively and is fixedly connected to the upper roller (13). The two upper rollers (13) are rotatably connected to the interior of the first equipment frame (5) and the second equipment frame (4) respectively.

7. The fire-resistant cable manufacturing equipment according to claim 2, characterized in that: One side of the surface of the driving bevel gear (16) is meshed with a driven bevel gear (31). A rotating rod (32) is fixedly installed on one side of the driven bevel gear (31). One end of the surface of the rotating rod (32) is rotatably connected to the connecting frame (10) through a shaft seat (33). The other end of the rotating rod (32) is fixedly installed with a transmission gear (34). One side of the transmission gear (34) is rotatably connected to the mounting cylinder (7) through a rotating seat (35). The surface of the transmission gear (34) is covered with a protective cover (37). One side of the protective cover (37) is fixedly connected to the mounting cylinder (7) through a connecting rod (36).

8. The fire-resistant cable manufacturing equipment according to claim 7, characterized in that: The circumferential surface of the transmission gear (34) is meshed with an external gear ring (38). A sleeve (40) is fixedly installed on one side of the external gear ring (38), and the sleeve (40) is rotatably installed inside the mounting cylinder (7). The inner wall of one end of the sleeve (40) is rotatably connected to two trimming rollers (15), and a driven gear (6) is fixedly installed on one end of each of the two trimming rollers (15). One side of each of the two driven gears (6) is rotatably connected to the inner wall of the other end of the sleeve (40). An internal gear ring (39) is meshed between the surfaces of the two driven gears (6), and the circumferential surface of the internal gear ring (39) is fixedly connected to the inside of the sleeve (40).

9. A fire-resistant cable, characterized in that: Using any of the above claims 1 to 8 A fire-resistant cable manufacturing equipment is used for manufacturing.

10. A fire-resistant cable according to claim 9, characterized in that: The fireproof cable includes a concentric strand (42) and a fireproof layer extruded and coated on its surface. The ceramicized fire-resistant silicone rubber in the fireproof layer completely wraps the concentric strand (42) to form a basic unit for conduction and insulation. The microcapsule fire extinguishing particles embedded in the ceramicized fire-resistant silicone rubber can improve the fireproof performance.

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