A precision milling forming device for a marine electric heat tracing band sheath

Abstract

The application provides a marine electric tracing band sheath precision milling forming device, and relates to the technical field of electric tracing band milling equipment. The marine electric tracing band sheath precision milling forming device comprises a milling table, a clamping seat, a support frame and a tool holder. The clamping seat is fixedly installed on the top of the milling table, the support frame is fixedly installed on the top of the milling table, and the tool holder is installed in the support frame. Cooling mechanisms are arranged on the support frame and the tool holder. The cooling mechanisms comprise a roller air cooling assembly and an air volume adjusting assembly. The roller air cooling assembly is used for heat dissipation and cooling of the electric tracing band sheath during milling. The air volume adjusting assembly is used for adjusting and controlling the air volume of the roller air cooling assembly. The marine electric tracing band sheath precision milling forming device has the advantages of timely air cooling of the sheath after milling, self-adaptive air volume adjustment and blockage cleaning of the air cooling assembly.

Description

Technical Field

[0001] This invention relates to the field of electric heat tracing equipment milling technology, and in particular to a precision milling forming device for marine electric heat tracing sheaths. Background Technology

[0002] The protective sheath of marine electric heating cables is the outermost protective shell covering the marine electric heating cable. It is mostly made of fluoroplastic material that is resistant to salt spray, seawater corrosion, and high temperature. It is mainly used to protect the heating core, insulation layer, and metal shielding braid layer inside the heating cable, and to isolate it from water vapor in the cabin, sea salt corrosion, and mechanical impact and wear. At the same time, it can buffer the structural compression caused by hull vibration, and prevent the internal shielding layer from being torn or the insulation layer from being damaged and leaking electricity. After milling and slotting, the shielding ground wire can be led out and the waterproof connector can be fixed in place, thereby ensuring the long-term stable and safe operation of the electric heating cable used for antifreeze of marine pipelines.

[0003] Traditional precision milling forming equipment for marine electric heat tracing cable sheaths lacks a dedicated cooling and heat dissipation mechanism when milling the sheaths. The high-speed friction between the milling cutter and the surface of the polymer plastic sheath generates a large amount of cutting heat, which can only be dissipated naturally by the air, resulting in extremely low heat dissipation efficiency. Due to the poor heat resistance of the plastic material in the electric heat tracing cable sheath, the high temperature accumulated during milling can easily cause the surface of the sheath to soften, melt, and deform due to heat.

[0004] Therefore, it is necessary to provide a precision milling and forming device for marine electric heating cable sheaths to solve the above-mentioned technical problems. Summary of the Invention

[0005] The technical problem solved by the present invention is to provide a precision milling and forming device for marine electric heating cable sheaths that provides timely air cooling and temperature reduction after milling, adaptive and adjustable air volume, and clears blockages in the air cooling components.

[0006] To solve the above-mentioned technical problems, the present invention provides a precision milling and forming device for marine electric heating cable sheaths, comprising: a milling table, a clamping base, a support frame, and a tool holder. The clamping base is fixedly installed on the top of the milling table, the support frame is fixedly installed on the top of the milling table, and the tool holder is installed inside the support frame. Cooling mechanisms are provided on the support frame and the tool holder. The cooling mechanisms include a drum air-cooling component and an airflow regulating component. The drum air-cooling component is used to dissipate heat and cool the electric heating cable sheath during milling, and the airflow regulating component is used to regulate the airflow of the drum air-cooling component.

[0007] Preferably, the drum air-cooled assembly includes an air compressor, a support plate, a first screw, and a drum. The air compressor is fixedly installed on the top of the support frame, and an air storage box is fixedly installed inside the support frame. The air compressor is connected to the air storage box. An air supply pipe is fixedly installed on one outer wall of the air storage box, and one end of an air pipe is fixedly installed at the end of the air supply pipe away from the air storage box. The support plate is fixedly installed at the bottom of the knife holder, and a fixing plate is fixedly installed on one outer wall of the support plate. A sliding plate is slidably installed on one side of the support plate. Two first guide rods are slidably installed through the sliding plate and the fixing plate, and the top ends of the two first guide rods are fixedly installed with... The device has a common limiting plate, and the bottom ends of the two first guide rods are fixedly installed with the same connecting plate. The outer sides of the two first guide rods are each fitted with a first spring. The two ends of the first spring are respectively fixedly connected to the fixed plate and the connecting plate. The bottom of the connecting plate is fixedly installed with a connecting arm. One end of the connecting arm is fixedly installed with a fixing ring. The roller is rotatably installed on the outer wall of the fixing ring. The roller is provided with multiple air outlets. The other end of the air pipe is fixedly connected to the fixing ring. The first screw is rotatably installed on the support plate. The sliding plate is threadedly connected to the first screw. The bottom end of the first screw is fixedly installed with a knob.

[0008] Preferably, the airflow regulating component includes a first motor, a spring-loaded platinum resistance thermometer, two first baffles, and multiple arc-shaped clamps. The spring-loaded platinum resistance thermometer is fixedly mounted on the connecting arm. Two rotating shafts are rotatably mounted inside the air duct. The two first baffles are respectively fixedly mounted on the outer walls of the two rotating shafts. The top ends of both rotating shafts extend outside the air duct and are each fixedly mounted with a gear. The first motor is fixedly mounted on the top of the air duct. The output shaft of the air duct is fixedly connected to the top end of one of the rotating shafts. Two arc-shaped grooves are provided on the bottom inner wall of the air duct. Multiple arc-shaped clamps are respectively disposed in the two arc-shaped grooves. Multiple second springs are provided in each of the two arc-shaped grooves. The two ends of the second springs are respectively fixedly connected to the arc-shaped clamps and the inner wall of the arc-shaped grooves. Positioning posts are fixedly mounted on the outer wall of the two first baffles away from the air storage box. The two positioning posts extend into the two arc-shaped grooves.

[0009] Furthermore, the outer wall of the roller is provided with a wear-resistant and thermally conductive lining, and the spring-pressed platinum resistance probe is in contact with the wear-resistant and thermally conductive lining.

[0010] Furthermore, each of the multiple arc-shaped clamps is provided with multiple arc-shaped clamping openings, and the outer walls of the two positioning posts are in contact with the inner walls of part of the arc-shaped clamping openings.

[0011] Furthermore, a U-shaped plate is slidably installed on the top of the milling table, and a hydraulic cylinder is fixedly installed on the top of the milling table. The telescopic end of the hydraulic cylinder is fixedly connected to the U-shaped plate. The U-shaped plate is also provided with a clearing mechanism for clearing multiple air outlets of the roller. The clearing mechanism includes an extraction component and a blockage clearing component.

[0012] Preferably, the extraction assembly includes a positioning short tube, a negative pressure dust collection assembly, a positioning vertical plate, and a suction pipe. The positioning short tube is fixedly installed at the end of the roller away from the fixing ring. The outer wall of the positioning short tube has two planes. A second baffle is rotatably installed at the end of the positioning short tube away from the roller. The negative pressure dust collection assembly is fixedly installed on the top of the milling table. The positioning vertical plate is fixedly installed inside the U-shaped plate. The top of the positioning vertical plate has two first inclined surfaces. A fixing cylinder is fixedly installed on one side of the outer wall of the positioning vertical plate. The suction pipe is slidably installed inside the fixing cylinder. One end of a plurality of third springs is fixedly installed inside the fixing cylinder. The other ends of the plurality of third springs are all fixedly connected to the suction pipe. An abutment ring is fixedly installed on the outer wall of the suction pipe. The outer wall of the abutment ring has a second inclined surface. One end of the extraction tube is fixedly installed at one end of the suction pipe. The other end of the extraction tube is fixedly connected to the negative pressure dust collection assembly.

[0013] Preferably, the unblocking assembly includes a first bidirectional lead screw, two arc-shaped plates, a second bidirectional lead screw, and two main moving plates. The first bidirectional lead screw is rotatably mounted on the bottom of the U-shaped plate. A second motor is fixedly mounted on the bottom of the U-shaped plate, and the output shaft of the second motor is fixedly connected to one end of the first bidirectional lead screw. Two support arms are slidably mounted on the U-shaped plate, and both support arms are threadedly connected to the first bidirectional lead screw. The two arc-shaped plates are respectively fixedly mounted on the two support arms. Multiple push rods are slidably mounted through and on each of the two arc-shaped plates. Multiple mounting plates are fixedly mounted on one end of each of the multiple push rods. A fourth spring is sleeved on the outer side of each of the multiple push rods. The two ends of the fourth spring are fixedly connected to the mounting plate and the arc-shaped plate, respectively. The outer wall of the multiple mounting plates away from the multiple push rods is fixedly mounted with... The device includes a push rod, a second bidirectional lead screw rotatably mounted on one outer wall of the U-shaped plate, a third motor fixedly mounted on one outer wall of the U-shaped plate, the output shaft of the third motor fixedly connected to one end of the second bidirectional lead screw, two main moving plates slidably mounted on the U-shaped plate and threadedly connected to the second bidirectional lead screw, multiple grooves on the U-shaped plate, a second guide rod fixedly mounted in each groove, a secondary moving plate slidably mounted on the outer side of the second guide rod, a fifth spring sleeved on the outer side of the second guide rod, the two ends of the fifth spring fixedly connected to the inner wall of the groove and the secondary moving plate respectively, a roller rotatably mounted on the end of the secondary moving plate near the main moving plate, a guide groove on the side of the main moving plate near the secondary moving plate, and the roller contacting the guide groove.

[0014] Furthermore, a steel block is fixedly installed on the second baffle, and a blind groove is provided at one end of the positioning short tube near the second baffle, and a magnet block is fixedly installed in the blind groove.

[0015] Furthermore, the top of the positioning vertical plate is integrally formed with two vertical guide plates, one long and one short, and two first inclined surfaces are respectively set at the top of the two vertical guide plates.

[0016] Compared with related technologies, the precision milling and forming device for marine electric heating cable sheaths provided by the present invention has the following advantages: This invention provides a precision milling and forming device for marine electric heating cable sheaths. Through the cooperation of a drum air-cooling component and an airflow regulation component, during the milling process of the electric heating cable sheath, the drum air-cooling component, through the coordinated operation of an air compressor, air tank, air supply pipe, air pipe, and drum, sprays cooling airflow onto the milled sheath surface, promptly removing the heat generated during milling and effectively preventing the sheath from melting or deforming due to high temperatures. The airflow regulation component, through real-time acquisition of the drum and sheath surface temperature using a spring-loaded platinum resistance thermometer, combined with the linkage control of a first motor, gears, shaft, and first baffle, can dynamically adjust the ventilation flow area of ​​the air supply pipe according to temperature changes, achieving precise control of the cooling airflow. This avoids excessive airflow and waste of air source while ensuring adequate heat dissipation under high-temperature conditions, improving cooling efficiency and energy utilization. Furthermore, the wear-resistant and heat-conducting lining on the outer wall of the drum also ensures the accuracy and stability of the spring-loaded platinum resistance thermometer temperature measurement. By combining the extraction and unblocking components, the system effectively cleans milling dust, shavings, and other debris stuck in the drum's air outlet after the sheath milling process. This solves the problem of reduced cooling airflow and poor heat dissipation caused by air outlet blockage, ensuring the continuous and stable operation of the cooling mechanism. The extraction component, through the coordinated operation of the negative pressure dust collection component, extraction pipe, and suction pipe, applies negative pressure suction to the drum's inner cavity, quickly extracting loose milling debris from the air outlet and improving unblocking efficiency. The unblocking component, through the linkage of the first bidirectional lead screw, the second motor, the support arm, the arc plate, the top rod, and the push rod, can achieve hard unblocking of compacted hard debris in the air outlet. With the cooperation of the second bidirectional lead screw, the third motor, the main moving plate, the auxiliary moving plate, and the fifth spring, the arc plate and the top rod can be precisely positioned and moved smoothly, ensuring the stability of the unblocking operation. Finally, through the cooperation of the outer wall plane of the positioning short pipe and the vertical guide plate of the positioning vertical plate, the drum can be rotated and positioned, ensuring precise alignment during the unblocking operation. Attached Figure Description

[0017] Figure 1 A schematic diagram of the first embodiment of the precision milling forming device for marine electric heat tracing cable sheaths provided by the present invention; Figure 2 for Figure 1 The diagram shows a cross-sectional view of the support frame, tool holder, and gas storage tank. Figure 3 for Figure 2 A schematic diagram of the assembly of some of the structures shown; Figure 4 for Figure 3 The diagram shows a cross-sectional view of the retaining ring and the roller. Figure 5 for Figure 2 The diagram shows a cross-sectional view of the air duct. Figure 6 for Figure 2The diagram shows a cross-sectional view of the air duct, gears, and air storage tank. Figure 7 for Figure 2 The diagram shows a cross-sectional view of the air duct and the first baffle. Figure 8 for Figure 7 The diagram shows the assembly of the positioning column, arc-shaped clamp, second spring, and air duct. Figure 9 A schematic diagram of a second embodiment of the precision milling and forming device for marine electric heat tracing cable sheaths provided by the present invention; Figure 10 for Figure 9 The diagram shows a cross-sectional view of the milling table and support frame. Figure 11 for Figure 10 The diagram shows a partial structural representation. Figure 12 for Figure 11 The diagram shows a cross-sectional view of the roller, retaining ring, positioning short tube, and second baffle. Figure 13 for Figure 10 The diagram shows a partial structural representation. Figure 14 for Figure 13 The diagram shows the assembly of the positioning vertical plate, fixing cylinder, extraction pipe and negative pressure dust collection component. Figure 15 for Figure 14 The diagram shows a cross-sectional view of the positioning vertical plate, extraction tube, fixing cylinder, and suction tube. Figure 16 for Figure 13 The diagram shows a cross-sectional view of the U-shaped plate. Figure 17 for Figure 16 A cross-sectional schematic diagram of the arc-shaped plate, mounting plate, and top rod shown; Figure 18 for Figure 16 The diagram shows a cross-sectional view of the U-shaped plate, the main moving plate, and the auxiliary moving plate.

[0018] Labels in the diagram: 1. Milling table; 2. Clamping seat; 3. Support frame; 4. Air compressor; 5. Air tank; 6. Tool holder; 7. Roller; 8. Air pipe; 9. Air duct; 10. Support plate; 11. First screw; 12. Knob; 13. Spring-loaded platinum resistance thermometer; 14. Connecting plate; 15. First guide rod; 16. First spring; 17. Fixing plate; 18. Sliding plate; 19. Fixing ring; 20. First motor; 21. First baffle; 22. Gear; 23. Positioning pin; 24. Arc-shaped clamping plate; 25. Second spring; 26. Negative 27. Dust collection assembly; 28. U-shaped plate; 29. ​​Hydraulic cylinder; 30. Positioning short pipe; 31. Second baffle; 32. Extraction pipe; 33. Positioning vertical plate; 34. Secondary moving plate; 35. Main moving plate; 36. Fixed cylinder; 37. Contact ring; 38. Third spring; 39. Suction pipe; 40. Second motor; 41. Arc plate; 42. Third motor; 43. Push rod; 44. First double-acting screw; 45. Top rod; 46. Fourth spring; 47. Mounting plate; 48. Second double-acting screw; 49. Second guide rod; 40. Fifth spring. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] First embodiment: Please refer to the following: Figures 1-8 In the first embodiment of the present invention, the precision milling and forming device for marine electric heat tracing cable sheath includes: a milling table 1, a clamping seat 2, a support frame 3, an end support member, and a tool holder 6. The end support member is fixedly installed on the top of the milling table 1 to support one end of the electric heat tracing cable sheath being milled. The clamping seat 2 is fixedly installed on the top of the milling table 1. The support frame 3 is fixedly installed on the top of the milling table 1. The tool holder 6 is installed inside the support frame 3. Cooling mechanisms are provided on the support frame 3 and the tool holder 6. The cooling mechanisms include a drum air-cooling component and an airflow regulating component. The drum air-cooling component is used to dissipate heat and cool the electric heat tracing cable sheath during milling. The airflow regulating component is used to regulate the airflow of the drum air-cooling component.

[0021] The drum air-cooled assembly includes an air compressor 4, a support plate 10, a first screw 11, and a drum 7. The air compressor 4 is fixedly installed on the top of the support frame 3. An air storage box 5 is fixedly installed inside the support frame 3. The air compressor 4 is connected to the air storage box 5. An air supply pipe 9 is fixedly installed on one outer wall of the air storage box 5. One end of an air pipe 8 is fixedly installed at the end of the air supply pipe 9 away from the air storage box 5. The support plate 10 is fixedly installed at the bottom of the knife holder 6. A fixing plate 17 is fixedly installed on one outer wall of the support plate 10. A sliding plate 18 is slidably installed on one side of the support plate 10. Two first guide rods 15 are slidably installed through and on the sliding plate 18 and the fixing plate 17. The top of the two first guide rods 15... The same limiting plate is fixedly installed at the end of each of the two first guide rods 15. The bottom ends of the two first guide rods 15 are fixedly installed with the same connecting plate 14. The outer sides of the two first guide rods 15 are each fitted with a first spring 16. The two ends of the first spring 16 are fixedly connected to the fixing plate 17 and the connecting plate 14, respectively. A connecting arm is fixedly installed at the bottom of the connecting plate 14. A fixing ring 19 is fixedly installed at one end of the connecting arm. The roller 7 is rotatably installed on the outer wall of the fixing ring 19. The roller 7 is provided with multiple air outlets. The outer wall of the roller 7 is provided with a wear-resistant and heat-conducting lining. The other end of the air pipe 8 is fixedly connected to the fixing ring 19. The first screw 11 is rotatably installed on the support plate 10. The sliding plate 18 is connected to the first The screw 11 is threaded, and a knob 12 is fixedly installed at the bottom end of the first screw 11. The tool holder 6 feeds downward, and the milling cutter on the tool holder 6 presses down to first perform precision milling shaping on the sheath. As the tool holder 6 descends, the support plate 10 also descends. After milling starts, the milled end of the electric heating cable sheath will move to the right. At this time, the wear-resistant heat-conducting lining of the outer wall of the drum 7 contacts the electric heating cable sheath. When it is necessary to adjust the preload of the drum air-cooling assembly, the knob 12 is turned. The knob 12 drives the first screw 11 to rotate, and the sliding plate 18 is driven to slide downward by the threaded transmission. Since the position of the fixed plate 17 is fixed, when the connecting plate 14 descends, the first screw 11... Spring 16 is released and reset, causing the two first guide rods 15 to descend together with the limiting plate. The connecting arm drives the fixing ring 19 to press down, and the roller 7 is pressed tightly against the outer surface of the electric heating cable sheath after the milling operation. With the help of the elastic force of the first spring 16, the wear-resistant heat-conducting lining of the outer wall of the roller 7 is always elastically in contact with the workpiece surface. Then the air compressor 4 is started, and the compressed air of the air compressor 4 is delivered to the air storage box 5 for pressure stabilization. The airflow inside the air storage box 5 is delivered into the air supply pipe 9, and then through the air pipe 8 into the fixing ring 19, and finally delivered to the inner cavity of the roller 7. Cooling airflow is sprayed out from multiple air outlets on the outer wall of the roller 7 to cool the heated sheath surface after milling.

[0022] The airflow regulating assembly includes a first motor 20, a spring-loaded platinum resistance thermometer 13, two first baffles 21, and multiple arc-shaped clamps 24. The spring-loaded platinum resistance thermometer 13 is fixedly mounted on the connecting arm, and its probe is in contact with the wear-resistant and heat-conducting liner. Two rotating shafts are rotatably mounted inside the air duct 9, and the two first baffles 21 are respectively fixedly mounted on the outer walls of the two rotating shafts. The top ends of both rotating shafts extend outside the air duct 9 and are each fixedly mounted with a gear 22. The first motor 20 is fixedly mounted on the top of the air duct 9, and the output shaft of the air duct 9... The air duct 9 is fixedly connected to the top of one of the rotating shafts. Two arc-shaped grooves are provided on the inner wall of the bottom of the duct. Multiple arc-shaped clamps 24 are respectively installed in the two arc-shaped grooves. Multiple arc-shaped clamps 24 are provided on each of the arc-shaped clamps 24. Multiple second springs 25 are provided in each of the two arc-shaped grooves. The two ends of the second springs 25 are fixedly connected to the arc-shaped clamps 24 and the inner wall of the arc-shaped grooves, respectively. Positioning posts 23 are fixedly installed on the outer wall of the two first baffles 21 on the side away from the air storage box 5. The two positioning posts 23 extend into the two arc-shaped grooves, and the outer walls of the two positioning posts 23 are partially flush with the arc-shaped grooves. The inner walls of the clamping jaws are in contact. Because the spring-compressed platinum resistance thermometer 13 probe is in close contact with the wear-resistant and heat-conducting lining of the outer wall of the roller 7, the working temperature of the roller 7 and the sheath surface is collected in real time throughout the milling process. When the temperature detected by the spring-compressed platinum resistance thermometer 13 is higher than the preset safe temperature threshold, a working signal is sent to the first motor 20. The first motor 20 drives one of the shafts to rotate, and the gear 22 meshes with the other gear 22. The two shafts rotate synchronously, driving the two first baffles 21 to rotate, increasing the ventilation flow area inside the air duct 9 and increasing the cooling air volume. To enhance heat dissipation of the protective sleeve, if the measured temperature is lower than the preset safety threshold, the first motor 20 will rotate in reverse, and the two first baffles 21 will retract, reducing the cross-sectional area of ​​the ventilation opening and reducing the cooling air volume. When the opening of the first baffle 21 is adjusted by rotation, the positioning post 23 extends into the arc-shaped groove on the bottom inner wall of the air supply pipe 9. The outer wall of the positioning post 23 contacts the arc-shaped clamp of the arc-shaped clamp 24. The second spring 25 continuously pushes the arc-shaped clamp 24 to provide a limit for the positioning post 23, resist the impact of high-speed airflow, prevent the first baffle 21 from shaking and vibrating, and stabilize the current ventilation opening.

[0023] In this embodiment: First, the marine electric heating cable sheath to be processed is passed through and placed inside the clamping seat 2 above the milling table 1. At this time, the end of the electric heating cable sheath that needs to be milled is located on the end support directly below the milling cutter, completing the fixed positioning of the sheath workpiece. Then, the tool holder 6 is controlled to feed downwards, and the tool holder 6, carrying the milling cutter, presses down to perform precision milling shaping on the sheath. As the tool holder 6 descends, the support plate 10 also descends. After the milling starts, the milled end of the electric heating cable sheath will move to the right. At this time, the wear-resistant heat-conducting lining of the outer wall of the roller 7 comes into contact with the electric heating cable sheath. When it is necessary to adjust the preload of the drum air-cooling assembly, turn the knob 12. The knob 12 drives the first screw 11 to rotate. The sliding plate 18 is driven to slide down by the thread transmission. Since the fixed plate 17 is fixed in position, the first spring 16 is released and reset when the connecting plate 14 is lowered. This causes the two first guide rods 15 to drive the limit plate to fall together. The connecting arm drives the fixed ring 19 to press down. The drum 7 is pressed tightly against the outer surface of the electric heating cable sheath after the milling operation. With the help of the elastic force of the first spring 16, the wear-resistant heat-conducting lining of the outer wall of the drum 7 is always elastically in contact with the surface of the workpiece. Start the air compressor 4, and the compressed air from the air compressor 4 is delivered to the air storage tank 5 for pressure stabilization. The airflow inside the air storage tank 5 is delivered into the air supply pipe 9, and then through the air pipe 8 into the fixed ring 19, and finally delivered to the inner cavity of the drum 7. Cooling airflow is sprayed out from multiple air outlets on the outer wall of the drum 7 to cool the heated surface of the sheath after milling. At the same time, the spring-pressed platinum resistance 13 probe is in close contact with the wear-resistant and heat-conducting lining of the outer wall of the drum 7, and the working temperature of the drum 7 and the sheath surface is collected in real time throughout the milling process. When the temperature detected by the spring-loaded platinum resistance thermometer 13 is higher than the preset safe temperature threshold, a working signal is sent to the first motor 20. The first motor 20 drives one of the shafts to rotate, and the gear 22 meshes with the other gear 22. The two shafts rotate synchronously, driving the two first baffles 21 to rotate, increasing the ventilation flow area inside the air duct 9, increasing the cooling air volume, and enhancing the heat dissipation of the sheath. If the measured temperature is lower than the preset safe threshold, the first motor 20 rotates in the opposite direction, and the two first baffles 21 close, reducing the cross-sectional area of ​​the ventilation opening and reducing the cooling air volume. When the first baffle 21 rotates to adjust the opening, the positioning post 23 extends into the arc-shaped groove on the bottom inner wall of the air duct 9. The outer wall of the positioning post 23 contacts the arc-shaped clamp of the arc-shaped clamp 24. The second spring 25 continuously pushes the arc-shaped clamp 24 to provide a limit for the positioning post 23, resisting the impact of high-speed airflow, preventing the first baffle 21 from shaking and vibrating, and stabilizing the current ventilation opening. Finally, turn off the air compressor 4 to stop supplying compressed air to the drum air-cooling assembly, start the first motor 20, the first motor 20 drives the two first baffles 21 to rotate, close the gas passage of the air supply pipe 9, raise the tool holder 6, so that the milling cutter is away from the already machined sheath workpiece, unlock the clamping seat 2, and remove the machined marine electric heating cable sheath.

[0024] Second embodiment: The second embodiment of the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0025] Please refer to the following: Figures 9-18 In the precision milling and forming device for marine electric heating cable sheath provided in this embodiment, a U-shaped plate 27 is slidably installed on the top of the milling table 1, and a hydraulic cylinder 28 is fixedly installed on the top of the milling table 1. The telescopic end of the hydraulic cylinder 28 is fixedly connected to the U-shaped plate 27. The U-shaped plate 27 is also provided with a clearing mechanism for clearing multiple air outlets of the roller 7. The clearing mechanism includes an extraction component and a blockage clearing component.

[0026] The extraction assembly includes a positioning short tube 29, a negative pressure dust collection assembly 26, a positioning vertical plate 32, and a suction pipe 38. The positioning short tube 29 is fixedly installed at the end of the roller 7 away from the fixing ring 19. The outer wall of the positioning short tube 29 has two flat surfaces. A second baffle 30 is rotatably installed at the end of the positioning short tube 29 away from the roller 7, and a steel block is fixedly installed on the second baffle 30. A blind groove is provided at the end of the positioning short tube 29 near the second baffle 30, and a magnet block is fixedly installed in the blind groove. The negative pressure dust collection assembly 26 is fixedly installed on the top of the milling table 1. The negative pressure dust collection assembly 26 adopts a prior art negative pressure dust collection assembly, which includes a high-pressure centrifugal fan and a primary coarse filter. The system includes fine filtration and a filter chamber. A positioning vertical plate 32 is fixedly installed inside a U-shaped plate 27. The top of the positioning vertical plate 32 has two first inclined surfaces. Two vertical guide plates, one long and one short, are integrally formed on the top of the two vertical guide plates. A fixing cylinder 35 is fixedly installed on one side of the outer wall of the positioning vertical plate 32. A suction pipe 38 is slidably installed inside the fixing cylinder 35. One end of multiple third springs 37 is fixedly installed inside the fixing cylinder 35, and the other ends of the multiple third springs 37 are fixedly connected to the suction pipe 38. An abutment ring 36 is fixedly installed on the outer wall of the suction pipe 38. The outer wall of the contact ring 36 is provided with a second inclined surface. One end of the suction pipe 38 is fixedly installed with one end of the extraction pipe 31, and the other end of the extraction pipe 31 is fixedly connected to the negative pressure dust collection assembly 26. During the entire process of sheath milling, when debris gets stuck in the air outlet of the roller 7 and causes ventilation blockage, resulting in a decrease in cooling air volume, the control tool holder 6 moves a certain distance towards the air storage box 5. Then, the tool holder 6 drives the roller 7 to descend, and the hydraulic cylinder 28 is activated. The extension end of the hydraulic cylinder 28 pushes the U-shaped plate 27 to move upward. At this time, the longest vertical guide plate on the positioning vertical plate 32 first contacts a plane on the positioning short pipe 29 through the first inclined surface, which affects the roller. 7. Rotation positioning is performed. When the positioning vertical plate 32 continues to rise, the two planes on the positioning short tube 29 contact the outer wall of the two vertical guide plates that are close to each other. Then, the second baffle 30 is pushed open by the second inclined surface. The second baffle 30 rotates and no longer blocks the positioning short tube 29. One end of the dust suction pipe 38 is attached to one end of the positioning short tube 29, so that the positioning short tube 29 and the dust suction pipe 38 are connected. After the unblocking component is hard unblocked, the negative pressure dust collection component 26 is activated. The negative pressure is delivered to the dust suction pipe 38 through the extraction pipe 31, and negative pressure suction is applied to the inner cavity of the roller 7 to suck away the loose milling debris inside the air outlet of the roller 7.

[0027] The unblocking assembly includes a first bidirectional lead screw 43, two arc-shaped plates 40, a second bidirectional lead screw 47, and two main moving plates 34. The first bidirectional lead screw 43 is rotatably mounted on the bottom of a U-shaped plate 27. A second motor 39 is fixedly mounted on the bottom of the U-shaped plate 27, and the output shaft of the second motor 39 is fixedly connected to one end of the first bidirectional lead screw 43. Two support arms are slidably mounted on the U-shaped plate 27, and both support arms are threadedly connected to the first bidirectional lead screw 43. The two arc-shaped plates 40 are respectively fixedly mounted on the two support arms. Multiple push rods 44 are slidably mounted through and on each of the two arc-shaped plates 40, and one end of each push rod 44 is fixedly mounted with multiple... A fourth spring 45 is fitted on the outer side of each mounting plate 46 and multiple push rods 44. The two ends of the fourth spring 45 are fixedly connected to the mounting plate 46 and the arc-shaped plate 40, respectively. Push rods 42 are fixedly installed on the outer wall of each mounting plate 46 away from the multiple push rods 44. A second bidirectional lead screw 47 is rotatably mounted on one outer wall of a U-shaped plate 27. A third motor 41 is fixedly mounted on one outer wall of the U-shaped plate 27, and the output shaft of the third motor 41 is fixedly connected to one end of the second bidirectional lead screw 47. Two main moving plates 34 are slidably mounted on the U-shaped plate 27, and both main moving plates 34 are threadedly connected to the second bidirectional lead screw 47. 7 is provided with multiple sliding grooves, each containing a second guide rod 48 fixedly installed. A secondary moving plate 33 is slidably installed on the outer side of the second guide rod 48. A fifth spring 49 is sleeved on the outer side of the second guide rod 48, with its two ends fixedly connected to the inner wall of the sliding groove and the secondary moving plate 33, respectively. A roller is rotatably installed on the end of the secondary moving plate 33 near the main moving plate 34. A guide groove is provided on the side of the main moving plate 34 near the secondary moving plate 33, and the roller contacts the guide groove. When the second motor 39 is started, it drives the first bidirectional lead screw 43 to rotate, causing the two support arms to move towards each other, and the two arc-shaped plates 40 to move to the roller. On both sides of the outer periphery of the cylinder 7, the third motor 41 is started. The third motor 41 drives the second bidirectional lead screw 47 to rotate, causing the two main moving plates 34 to slide relative to each other. The main moving plates 34 squeeze the rollers mounted on the auxiliary moving plates 33 through the inner guide groove, pushing the auxiliary moving plates 33 to slide along the second guide rod 48 and compress the fifth spring 49. Multiple sets of auxiliary moving plates 33 and two main moving plates 34 press against the push rod 42, causing the push rod 42 to drive the mounting plate 46 to move. The mounting plate 46 compresses the fourth spring 45, pushing multiple push rods 44 to extend forward, so that multiple push rods 44 are inserted into the air outlet, pushing the compacted hard debris inward, completing the hard unblocking.

[0028] In this embodiment: During the entire process of sleeve milling, the cold air sprayed outward by the roller 7 will carry milling dust and shavings. The debris can easily get stuck in the air outlet of the outer wall of the roller, causing ventilation blockage and reducing the cooling air volume. The control blade holder 6 moves a certain distance towards the air storage box 5. Then, the blade holder 6 drives the roller 7 to descend, activating the hydraulic cylinder 28. The telescopic end of the hydraulic cylinder 28 pushes the U-shaped plate 27 upward. At this time, the longest vertical guide plate on the positioning vertical plate 32 contacts a plane on the positioning short tube 29 via the first inclined surface, rotating and positioning the roller 7. As the positioning vertical plate 32 continues to rise, the two planes on the positioning short tube 29 contact the outer walls of the two vertical guide plates on their respective sides. Then, the second inclined surface pushes open the second baffle 30. The second baffle 30 rotates and no longer blocks the positioning short tube 29. One end of the suction pipe 38 adheres to one end of the positioning short tube 29, connecting the positioning short tube 29 and the suction pipe 38. The second motor 39 is activated, driving the first bidirectional lead screw 43 to rotate, causing the two support arms to move towards each other. The arc plate 40 moves to both sides of the outer periphery of the roller 7, and the third motor 41 is started. The third motor 41 drives the second bidirectional lead screw 47 to rotate, which drives the two main moving plates 34 to slide relative to each other. The main moving plates 34 squeeze the rollers mounted on the auxiliary moving plates 33 through the inner guide groove, push the auxiliary moving plates 33 to slide along the second guide rod 48 and compress the fifth spring 49. Multiple sets of auxiliary moving plates 33 and two main moving plates 34 press against the push rod 42, so that the push rod 42 drives the mounting plate 46 to move. The mounting plate 46 compresses the fourth spring 45, pushes multiple push rods 44 to extend forward, and inserts multiple push rods 44 into the air outlet, pushing the compacted hard debris inward to complete the hard unblocking. Then the negative pressure dust collection component 26 is started. The negative pressure is transported to the dust collection pipe 38 through the extraction pipe 31, and negative pressure suction is applied to the inner cavity of the roller 7 to suck away the loose milling debris inside the air outlet of the roller 7. After the unblocking process is completed, the third motor 41 drives the second bidirectional lead screw 47 in the reverse direction, the two main moving plates 34 move away from each other, the fifth spring 49 releases its elasticity, pushes the auxiliary moving plate 33 to slide and reset along the second guide rod 48, controls the second motor 39 to rotate the first bidirectional lead screw 43 in the reverse direction, drives the two side support arms and the two arc plates 40 to move away from each other and separate from the outer surface of the roller 7, controls the hydraulic cylinder 28 to retract, drives the U-shaped plate 27 to descend away from the roller 7, the positioning vertical plate 32 then retracts, the contact ring 36 no longer squeezes the second baffle 30, the second baffle 30 then rotates back to its position by its own weight, the magnet attracts the steel block, and seals the port of the positioning short pipe 29, ending the unblocking process of the air outlet of the roller 7.

[0029] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A precision milling and forming device for marine electric heating cable sheaths, comprising: A milling table, a clamping base, a support frame, and a tool holder are provided. The clamping base is fixedly installed on the top of the milling table, the support frame is fixedly installed on the top of the milling table, and the tool holder is installed inside the support frame. The tool holder is characterized in that a cooling mechanism is provided on the support frame and the tool holder. The cooling mechanism includes a drum air-cooling component and an airflow regulating component. The drum air-cooling component is used to dissipate heat and cool the electric heating cable sheath during milling, and the airflow regulating component is used to regulate the airflow of the drum air-cooling component.

2. The precision milling and forming device for marine electric heating cable sheaths according to claim 1, characterized in that, The drum air-cooled assembly includes an air compressor, a support plate, a first screw, and a drum. The air compressor is fixedly installed on the top of the support frame, and an air storage box is fixedly installed inside the support frame. The air compressor is connected to the air storage box. An air supply pipe is fixedly installed on one outer wall of the air storage box, and one end of an air pipe is fixedly installed at the end of the air supply pipe away from the air storage box. The support plate is fixedly installed at the bottom of the knife holder, and a fixing plate is fixedly installed on one outer wall of the support plate. A sliding plate is slidably installed on one side of the support plate. Two first guide rods are slidably installed through the sliding plate and the fixing plate, and the top ends of the two first guide rods are fixedly installed with the same... A limiting plate is provided. The bottom ends of the two first guide rods are fixedly installed with the same connecting plate. The outer sides of the two first guide rods are each fitted with a first spring. The two ends of the first springs are respectively fixedly connected to the fixed plate and the connecting plate. A connecting arm is fixedly installed at the bottom of the connecting plate. A fixing ring is fixedly installed at one end of the connecting arm. A roller is rotatably installed on the outer wall of the fixing ring. The roller is provided with multiple air outlets. The other end of the air pipe is fixedly connected to the fixing ring. The first screw is rotatably installed on the support plate. The sliding plate is threadedly connected to the first screw. A knob is fixedly installed at the bottom end of the first screw.

3. The precision milling and forming device for marine electric heating cable sheaths according to claim 2, characterized in that, The airflow regulating assembly includes a first motor, a spring-loaded platinum resistance thermometer, two first baffles, and multiple arc-shaped clamps. The spring-loaded platinum resistance thermometer is fixedly mounted on the connecting arm. Two rotating shafts are rotatably mounted inside the air duct. The two first baffles are respectively fixedly mounted on the outer walls of the two rotating shafts. The top ends of both rotating shafts extend outside the air duct and are each fixedly mounted with a gear. The first motor is fixedly mounted on the top of the air duct. The output shaft of the air duct is fixedly connected to the top end of one of the rotating shafts. Two arc-shaped grooves are provided on the bottom inner wall of the air duct. Multiple arc-shaped clamps are respectively disposed in the two arc-shaped grooves. Multiple second springs are provided in each of the two arc-shaped grooves. The two ends of the second springs are respectively fixedly connected to the arc-shaped clamps and the inner wall of the arc-shaped grooves. Positioning posts are fixedly mounted on the outer wall of the two first baffles away from the air storage box. The two positioning posts extend into the two arc-shaped grooves.

4. The precision milling and forming device for marine electric heating cable sheaths according to claim 3, characterized in that, The outer wall of the roller is provided with a wear-resistant and thermally conductive lining, and the spring-pressed platinum resistance probe is in contact with the wear-resistant and thermally conductive lining.

5. The precision milling and forming device for marine electric heating cable sheaths according to claim 3, characterized in that, Each of the arc-shaped clamps is provided with multiple arc-shaped clamping openings, and the outer walls of the two positioning posts are in contact with the inner walls of part of the arc-shaped clamping openings.

6. The precision milling and forming device for marine electric heating cable sheaths according to claim 3, characterized in that, A U-shaped plate is slidably installed on the top of the milling table, and a hydraulic cylinder is fixedly installed on the top of the milling table. The telescopic end of the hydraulic cylinder is fixedly connected to the U-shaped plate. The U-shaped plate is also provided with a unclogging mechanism for unblocking multiple air outlets of the roller. The unclogging mechanism includes an extraction component and a blockage removal component.

7. The precision milling and forming device for marine electric heating cable sheaths according to claim 6, characterized in that, The extraction assembly includes a positioning short tube, a negative pressure dust collection assembly, a positioning vertical plate, and a suction pipe. The positioning short tube is fixedly installed at the end of the roller away from the fixing ring. The outer wall of the positioning short tube has two flat surfaces. A second baffle is rotatably installed at the end of the positioning short tube away from the roller. The negative pressure dust collection assembly is fixedly installed on the top of the milling table. The positioning vertical plate is fixedly installed inside the U-shaped plate. The top of the positioning vertical plate has two first inclined surfaces. A fixing cylinder is fixedly installed on one side of the outer wall of the positioning vertical plate. The suction pipe is slidably installed inside the fixing cylinder. One end of a plurality of third springs is fixedly installed inside the fixing cylinder. The other ends of the plurality of third springs are all fixedly connected to the suction pipe. An abutment ring is fixedly installed on the outer wall of the suction pipe. The outer wall of the abutment ring has a second inclined surface. One end of the extraction pipe is fixedly installed at one end of the suction pipe, and the other end of the extraction pipe is fixedly connected to the negative pressure dust collection assembly.

8. The precision milling and forming device for marine electric heating cable sheaths according to claim 7, characterized in that, The unblocking assembly includes a first bidirectional lead screw, two arc-shaped plates, a second bidirectional lead screw, and two main moving plates. The first bidirectional lead screw is rotatably mounted on the bottom of the U-shaped plate. A second motor is fixedly mounted on the bottom of the U-shaped plate, and the output shaft of the second motor is fixedly connected to one end of the first bidirectional lead screw. Two support arms are slidably mounted on the U-shaped plate, and both support arms are threadedly connected to the first bidirectional lead screw. The two arc-shaped plates are respectively fixedly mounted on the two support arms. Multiple push rods are slidably mounted through and on each of the two arc-shaped plates. Multiple mounting plates are fixedly mounted on one end of each push rod. A fourth spring is sleeved on the outer side of each push rod, and both ends of the fourth spring are fixedly connected to the mounting plate and the arc-shaped plate, respectively. Push rods are fixedly mounted on the outer wall of the mounting plates on the side away from the multiple push rods. The second bidirectional lead screw is rotatably mounted on one outer wall of the U-shaped plate. A third motor is fixedly mounted on one outer wall of the U-shaped plate, and the output shaft of the third motor is fixedly connected to one end of the second bidirectional lead screw. Both main moving plates are slidably mounted on the U-shaped plate, and both main moving plates are threadedly connected to the second bidirectional lead screw. The U-shaped plate is provided with multiple sliding grooves, and a second guide rod is fixedly mounted in each of the multiple sliding grooves. A secondary moving plate is slidably mounted on the outer side of the second guide rod. A fifth spring is sleeved on the outer side of the second guide rod, and the two ends of the fifth spring are fixedly connected to the inner wall of the sliding groove and the secondary moving plate, respectively. A roller is rotatably mounted on the end of the secondary moving plate near the main moving plate. A guide groove is provided on the side of the main moving plate near the secondary moving plate, and the roller contacts the guide groove.

9. The precision milling and forming device for marine electric heating cable sheaths according to claim 7, characterized in that, A steel block is fixedly installed on the second baffle, and a blind groove is provided at one end of the positioning short tube near the second baffle, and a magnet is fixedly installed in the blind groove.

10. The precision milling and forming device for marine electric heating cable sheaths according to claim 8, characterized in that, The top of the positioning vertical plate has two vertical guide plates integrally formed, with one vertical guide plate being longer than the other, and two first inclined surfaces being respectively set at the top of the two vertical guide plates.

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