Mpp cable protection pipe processing device and processing method

Abstract

The application relates to the technical field of Mpp cable protection pipe processing, in particular to an Mpp cable protection pipe processing device and a processing method, which comprises a feeding mechanism arranged on an operation table, a tapping mechanism arranged between the left and right symmetrical operation tables, and a cooling mechanism arranged on the tapping mechanism. The tapping mechanism can drive the tap on one side to rotate anticlockwise and exit from the corresponding end portion of the protection pipe on the same side, and simultaneously drive the tap on the other side to feed and tap the corresponding end portion of the protection pipe on the same side clockwise, so that the exit time and the feeding and tapping time of the taps on the two sides completely coincide and seamless connection processing is realized. The cooling mechanism can accurately and stably spray the cooling liquid into the multiple grooves on the tap processing end portion, so that the cooling liquid can be directly, quickly and uniformly injected into the end portion of the protection pipe from the grooves on the tap during the tapping processing of the protection pipe.

Description

Technical Field

[0001] This invention relates to the field of Mpp cable protection pipe processing technology, specifically to an Mpp cable protection pipe processing device and processing method. Background Technology

[0002] MPP cable is a modified polypropylene power cable, a special cable used for power transmission. Its protective tube is used to protect the MPP cable from external physical damage and environmental influences. The protective tube is usually also made of modified polypropylene material. The end of the protective tube generally needs to be tapped to make internal threads to facilitate installation and fixation with other protective tubes or connecting accessories. The cutting end of the tap usually has multiple slots evenly opened around the circumference.

[0003] In existing technologies, plastic materials are easily affected by the heat generated during tapping, which can cause local softening or melting. Therefore, when machining the internal threads at the end of the MPP cable protection tube, coolant is usually continuously sprayed onto the outer surface of the protection tube to continuously cool the end of the protection tube. Under existing processing standards, the tap is usually fed clockwise to machine the internal threads at the end of the protection tube, and then rotated counterclockwise to withdraw after machining to prevent extrusion and wear on the machined internal threads. It can also help to remove chips from the end of the protection tube.

[0004] However, the traditional method of internal thread tapping at the end of the protective tube has the following problems: 1. In the existing technology, when internal thread tapping at the end of the protective tube, due to the thickness of the protective tube itself, the coolant sprayed on the outer surface of the protective tube is difficult to effectively penetrate to the inner surface of the end of the protective tube for timely and effective cooling. This not only results in low cooling efficiency and a certain degree of waste of coolant, but also leads to poor cooling effect on the inner surface of the end of the protective tube, thus affecting the forming quality of the internal thread tapping at the end of the protective tube; 2. In the existing technology, after the tap has finished tapping the internal thread at the end of the protective tube, the tap needs to be reversed and reset. Since the tap withdrawal time is almost the same as the feed tapping time, the overall tapping time of the protective tube is long and the efficiency is low. At the same time, the tap's operating method also greatly limits the overall capacity of the protective tube processing production line. Summary of the Invention

[0005] To achieve the above objectives, the present invention provides the following technical solution: an Mpp cable protection pipe processing device, comprising symmetrically distributed operating tables, wherein an loading mechanism for loading and unloading protection pipes is provided on the operating tables, and a tapping mechanism for tapping the end of the protection pipe is provided between the symmetrical operating tables, and a cooling mechanism for cooling the inner surface of the end of the protection pipe is provided on the tapping mechanism.

[0006] The feeding mechanism includes a pipe guide part set on the upper side of the operating table, a pipe clamping part set on both the operating table and the pipe guide part, and a pipe positioning part set on the upper side of the operating table and between the pipe clamping parts.

[0007] The tapping mechanism includes an upward-facing U-shaped platform fixedly arranged between two symmetrical operating tables. A transverse driving part is provided on the U-shaped platform, and a tapping part is provided on the transverse driving part.

[0008] The cooling mechanism includes a cooling section for spraying coolant, which is jointly provided on the transverse drive section and the tapping section. A liquid delivery section for conveying coolant is provided on the rear side of the cooling section. An opening and closing section for controlling the delivery of coolant is jointly provided on the liquid delivery section and the U-shaped platform.

[0009] Preferably, the pipe guide section includes guide platforms that are symmetrically fixed on the upper side of the operating table, and L-shaped guide plates and inclined guide plates that are distributed vertically are fixed on opposite sides of the symmetrical guide platforms.

[0010] Preferably, the pipe clamping part includes a vertically penetrating discharge port on the operating table and located in front of the guide table. A fixed clamping component is symmetrically fixed on the upper side of the operating table and above the discharge port via a support. A hydraulic cylinder is fixedly installed on the opposite side of the symmetrical guide table via a support. A movable clamping component is fixedly installed at the telescopic end of the hydraulic cylinder to move back and forth and cooperate with the corresponding fixed clamping component to clamp the protective pipe. The movable clamping component is located below the corresponding inclined guide plate.

[0011] Preferably, the pipe positioning part includes a positioning platform fixedly installed on the upper side of the operating table and located behind the discharge port. A positioning rotating plate is rotatably installed on the front side of the positioning platform. A torsion spring rotating shaft is symmetrically fixed at the left and right ends of the positioning rotating plate and elastically rotatably connected to the front side of the corresponding positioning platform. The upper end of the positioning rotating plate is an inclined surface.

[0012] Preferably, the lateral drive unit includes a hydraulic cylinder two fixedly mounted on the upper side of the horizontal section of the U-shaped platform via a support three. The telescopic end of the hydraulic cylinder two is fixedly mounted with a movable frame that moves left and right. Two sets of guide rods that are slidably connected to the corresponding vertical section of the U-shaped platform are symmetrically mounted on the left and right sides of the movable frame. Each set consists of guide rods that are symmetrically mounted front and rear.

[0013] Preferably, the tapping part includes a motor fixedly mounted on the front side of the moving frame, a worm gear rotatably mounted inside the moving frame on the drive end of the motor, a worm wheel rotatably connected to the upper side of the worm gear, and mounting shafts rotatably connected to the moving frame symmetrically fixed on the left and right sides of the worm wheel, with taps mounted on opposite sides of the symmetrical mounting shafts.

[0014] Preferably, the cooling section includes fixed liquid tanks symmetrically fixed on the movable frame, and rotating liquid tanks that are rotatably connected to and communicate with the fixed liquid tanks are fixedly installed at opposite ends of the symmetrical mounting shafts. Multiple nozzles that correspond one-to-one with the slots at the ends of the corresponding taps and communicate with the rotating liquid tanks are uniformly fixedly installed on the side of the rotating liquid tanks away from the corresponding fixed liquid tanks. The end of the nozzle away from the corresponding rotating liquid tank is aligned with the corresponding slot on the corresponding tap.

[0015] Preferably, the infusion unit includes an infusion tube fixedly disposed on the rear side of the corresponding fixed liquid tank and communicating with the front and rear of the fixed liquid tank. An on / off valve is installed on one end of the infusion tube near the corresponding fixed liquid tank. A valve core that moves up and down is slidably disposed inside the on / off valve. A through groove that runs through the front and rear is opened on the valve core. A spring rod that moves up and down and is elastically slidably connected to the on / off valve is fixedly disposed on the upper side of the valve core. A fixing plate is fixedly disposed on the upper end of the spring rod.

[0016] Preferably, the opening and closing part includes an L-shaped driven plate rotatably mounted on the upper side of the corresponding fixed plate via a support four. The horizontal section of the L-shaped driven plate is fixedly mounted on the lower end of the corresponding vertical section away from the moving frame. A torsion spring shaft two, which is elastically rotatably connected to the corresponding support four, is symmetrically mounted on the L-shaped driven plate. A rotating roller is rotatably mounted on the upper end of the L-shaped driven plate. A support block is fixedly mounted on the upper side of the fixed plate and below the horizontal section of the corresponding L-shaped driven plate. A U-shaped connecting frame with its opening facing forward is fixedly mounted on the rear side of the U-shaped platform. Multiple U-shaped pressure plates, which are evenly distributed on the left and right, have their openings facing upward, are fixedly connected end to end to each other, and are located on the upper side of the L-shaped driven plate, are fixedly mounted on the lower side of the upper horizontal section of the U-shaped connecting frame via a connecting rod.

[0017] A method for processing an Mpp cable protection pipe includes the following steps:

[0018] Step 1: Raw material preparation: Select high-quality modified polypropylene resin as the main raw material, ensuring that it has the required physical and chemical properties, and add the necessary additives to improve the processing performance of the material and the performance of the final product.

[0019] Step 2, Extrusion Molding: MPP resin and additives are added to the extruder hopper in proportion. The material is melted into a uniform melt by heating and the shearing action of the screw. The molten material is then extruded through the die into the desired tubular shape. Finally, the extruded tube is continuously pulled out by the traction device.

[0020] Step 3, Cooling and Shaping: The extruded pipe is rapidly cooled using a water tank or spray device to quickly solidify and shape it.

[0021] Step 4: Cutting: When the cooled and shaped pipe reaches the predetermined length, it is cut into a protective pipe of the required length by an automatic cutting machine.

[0022] Step 5, thread tapping: The feeding mechanism guides multiple protective tubes sequentially and clamps them on the left and right sides of the tapping mechanism. The tapping mechanism then performs internal thread tapping on the ends of the clamped tubes on the left and right sides in sequence. At the same time, the cooling mechanism cools the inner surface of the corresponding tube ends. Finally, the feeding mechanism releases the tapped protective tubes for unloading.

[0023] Step Six: Quality Inspection: Inspect the surface of the protective tube for defects to ensure that the appearance quality is up to standard. Use measuring tools to measure the key dimensions of the protective tube to ensure that they meet the standard requirements. Finally, conduct a series of performance tests on the protective tube to ensure that it has good mechanical properties and durability.

[0024] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0025] 1. This invention, through a tapping mechanism, enables the simultaneous clockwise feeding and tapping of the corresponding end of the same-side protective tube by a tap on one side as it rotates counterclockwise out of the corresponding end of the same-side protective tube. This ensures that the withdrawal and feeding times of the two taps are completely overlapped, achieving seamless processing. This significantly reduces the downtime during the overall tapping process of the protective tube, greatly shortens the overall processing cycle of the protective tube, and thus greatly improves the overall processing efficiency of the protective tube and the overall capacity of the protective tube processing production line.

[0026] 2. This invention, through its cooling mechanism, enables accurate and stable injection of coolant into multiple slots on the tap's machining end. This allows the coolant to be directly, quickly, and evenly injected into the end of the protective tube from each slot during tapping. This not only directly and efficiently cools the tapping area, improving the cooling efficiency of the coolant and preventing cutting heat from affecting the forming quality of the internal thread, but also significantly reduces the tap's cutting resistance, improves the forming quality of the internal thread, extends the tap's service life, and further improves the efficiency of chip removal from the internal thread hole. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of the present invention.

[0028] Figure 2 This is a partial cross-sectional schematic diagram of the feeding mechanism.

[0029] Figure 3 This is a partial cross-sectional schematic diagram of the tapping mechanism.

[0030] Figure 4 for Figure 3 Enlarged diagram of point A in the middle.

[0031] Figure 5 This is a partial cross-sectional schematic diagram of the cooling mechanism.

[0032] Figure 6 This is a partial cross-sectional schematic diagram of the opening and closing section.

[0033] In the diagram: 1. Operating table; 2. Feeding mechanism; 21. Pipe fitting guide section; 211. Guide table; 212. L-shaped guide plate; 213. Angled guide plate; 22. Pipe fitting clamping section; 221. Fixed clamping component; 222. Hydraulic cylinder one; 223. Moving clamping component; 23. Pipe fitting positioning section; 231. Positioning table; 232. Positioning rotating plate; 233. Torsion spring rotating shaft one; 3. Tapping mechanism; 31. U-shaped table; 32. Lateral drive section; 321. Hydraulic cylinder two; 322. Moving frame; 323. Guide rod; 33. 331. Tapping section; 332. Motor; 333. Worm gear; 334. Mounting shaft; 335. Tap; 4. Cooling mechanism; 41. Cooling section; 411. Fixed liquid tank; 412. Rotating liquid tank; 413. Nozzle; 42. Infusion section; 421. Infusion pipe; 422. Opening and closing valve; 423. Valve core; 424. Spring rod; 425. Fixing plate; 43. Opening and closing section; 431. L-shaped driven plate; 432. Torsion spring shaft II; 433. Support block; 434. U-shaped connecting frame; 435. U-shaped pressure plate. Detailed Implementation

[0034] 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.

[0035] Please see Figure 1 A processing device for Mpp cable protection pipes includes symmetrically distributed operating tables 1. The operating tables 1 are equipped with a feeding mechanism 2 for feeding and unloading protection pipes. The symmetrical operating tables 1 are jointly equipped with a tapping mechanism 3 for tapping the ends of the protection pipes. The tapping mechanism 3 is equipped with a cooling mechanism 4 for cooling the inner surface of the ends of the protection pipes.

[0036] Please see Figure 1 The feeding mechanism 2 includes a pipe guide part 21 disposed on the upper side of the operating table 1, a pipe clamping part 22 disposed on both the operating table 1 and the pipe guide part 21, and a pipe positioning part 23 disposed on the upper side of the operating table 1 and between the pipe clamping parts 22.

[0037] Please see Figure 1 and Figure 2The pipe guide section 21 includes guide platforms 211 that are symmetrically fixed on the upper side of the operating table 1. On the opposite side of the symmetrical guide platforms 211, L-shaped guide plates 212 and oblique guide plates 213 are fixedly arranged vertically.

[0038] Please see Figure 1 and Figure 2 The pipe clamping part 22 includes a vertically penetrating discharge port on the operating table 1 and located in front of the guide table 211. On the upper side of the operating table 1 and above the discharge port, fixed clamping parts 221 are symmetrically fixed on the left and right sides by a support. On the opposite side of the symmetrical guide table 211, a hydraulic cylinder 222 is fixedly installed by a support. The telescopic end of the hydraulic cylinder 222 is fixedly provided with a movable clamping part 223 that moves back and forth and cooperates with the corresponding fixed clamping part 221 to clamp the protective pipe. The movable clamping part 223 is located below the corresponding inclined guide plate 213.

[0039] Please see Figure 1 and Figure 2 The pipe positioning part 23 includes a positioning platform 231 fixedly installed on the upper side of the operating table 1 and located behind the discharge port. A positioning rotating plate 232 is rotatably installed on the front side of the positioning platform 231. A torsion spring rotating shaft 233 is symmetrically fixed at the left and right ends of the positioning rotating plate 232 and is elastically rotatably connected to the front side of the corresponding positioning platform 231. The upper end of the positioning rotating plate 232 is an inclined surface.

[0040] Hydraulic cylinder 222 drives the corresponding movable clamping member 223 to move backward to the rear side of the lower end of the corresponding inclined guide plate 213. The lowermost protective tube between the L-shaped guide plate 212 and the inclined guide plate 213 falls to the upper side of the corresponding positioning platform 231 and is positioned between the movable clamping member 223 and the positioning rotating plate 232. The protective tube adjacent to the upper side of this protective tube is positioned between the lower ends of the L-shaped guide plate 212 and the inclined guide plate 213. At this time, hydraulic cylinder 222 drives the movable clamping member 223 to move forward again, and the movable clamping member 223 moves forward synchronously. The protective tube on the upper side of the positioning platform 231 moves forward and presses the corresponding positioning rotating plate 232 to rotate forward and make room until the moving clamping member 223 and the corresponding fixed clamping member 221 stably clamp and fix the protective tube. At this time, the protective tube is just disengaged from the corresponding positioning rotating plate 232. The positioning rotating plate 232 then rotates backward and resets under the elastic action of the corresponding torsion spring rotating shaft 233. At the same time, the protective tube between the lower ends of the corresponding L-shaped guide plate 212 and the inclined guide plate 213 and all the protective tubes on its upper side cannot move downward due to the obstruction of the upper surface of the corresponding moving clamping member 223.

[0041] When the tapping mechanism 3 completes the tapping process on the clamped and fixed protective tube, the hydraulic cylinder 222 drives the corresponding moving clamping part 223 to move backward again to the rear side of the lower end of the corresponding inclined guide plate 213. The protective tube falls steadily downward into the feeding port under the obstruction of the corresponding positioning rotating plate 232 on the rear side to complete the feeding. At this time, the protective tube at the lowest side between the L-shaped guide plate 212 and the inclined guide plate 213 also falls to the upper side of the corresponding positioning table 231 to wait for clamping.

[0042] Please see Figure 1 The tapping mechanism 3 includes an upward-facing U-shaped platform 31 fixedly disposed between two symmetrical operating tables 1. A transverse driving part 32 is disposed on the U-shaped platform 31, and a tapping part 33 is disposed on the transverse driving part 32.

[0043] Please see Figure 1 and Figure 3 The lateral drive unit 32 includes a hydraulic cylinder 321 fixedly mounted on the upper side of the horizontal section of the U-shaped platform 31 via a support 3. The telescopic end of the hydraulic cylinder 321 is fixedly mounted with a movable frame 322 that moves left and right. Two sets of guide rods 323 that are slidably connected to the vertical section of the U-shaped platform 31 are symmetrically mounted on the left and right sides of the movable frame 322. Each set consists of guide rods 323 that are symmetrically mounted front and rear.

[0044] Please see Figure 1 and Figure 3 The tapping part 33 includes a motor 331 fixedly installed on the front side of the movable frame 322. The drive end of the motor 331 is equipped with a worm gear 332 rotatably installed inside the movable frame 322. The upper side of the worm gear 332 is meshed with a worm wheel 333 rotatably connected to the movable frame 322. The left and right sides of the worm wheel 333 are symmetrically fixed with mounting shafts 334 rotatably connected to the movable frame 322. Taps 335 are installed on opposite sides of the left and right symmetrical mounting shafts 334.

[0045] First, the movable clamping member 223 and the fixed clamping member 221 on the right side cooperate to clamp and fix a protective tube to be tapped. Then, the motor 331 drives the worm gear 332 to rotate in a specific direction, so that the worm gear 332 drives the mounting shaft 334 and the tap 335 to rotate clockwise relative to the left end of the right protective tube through meshing with the worm wheel 333. At the same time, the hydraulic cylinder 321 drives the moving frame 322 to move to the right, so that the tap 335 on the right side feeds clockwise to tap the left end of the right protective tube until the tapping of the left end of the right protective tube is completed. At this time, the movable clamping member 223 and the fixed clamping member 221 on the left side cooperate to clamp and fix a protective tube to be tapped. Then, the motor 331 drives the worm gear 332 to reverse. The rotation causes the worm gear 332 to drive the mounting shaft 334 and tap 335 on the worm wheel 333 to rotate counterclockwise relative to the left end of the right protective tube and clockwise relative to the right end of the left protective tube. At the same time, the hydraulic cylinder 321 drives the moving frame 322 to move to the left, thereby causing the tap 335 on the right to rotate and exit the left end of the right protective tube. Simultaneously, the tap 335 on the left feeds clockwise to tap the right end of the left protective tube until the tap 335 on the right is completely exited from the left end of the right protective tube and the tap 335 on the left completes the tapping of the left end of the left protective tube. At this time, the moving clamp 223 and the fixed clamp 221 on the right cooperate to unload the protective tube that has been tapped and then clamp and fix another protective tube to be tapped.

[0046] The above-described operation method enables the right-side tap 335 to rotate counterclockwise out of the left end of the right protective tube while simultaneously driving the left-side tap 335 to feed and tap the right end of the left protective tube clockwise. This ensures that the exit time and feed tapping time of both taps 335 are completely coincident, achieving seamless processing. This significantly reduces the downtime during the overall tapping process of the protective tube, greatly shortens the overall processing cycle of the protective tube, and thus greatly improves the overall processing efficiency of the protective tube and the overall capacity of the protective tube processing production line.

[0047] Please see Figure 1 The cooling mechanism 4 includes a cooling section 41 for spraying coolant, which is jointly provided on the transverse drive section 32 and the tapping section 33. A liquid delivery section 42 for delivering coolant is provided on the rear side of the cooling section 41. An opening and closing section 43 for controlling the delivery of coolant is jointly provided on the liquid delivery section 42 and the U-shaped platform 31.

[0048] Please see Figure 1 , Figure 3 and Figure 4The cooling unit 41 includes a fixed liquid tank 411 symmetrically fixed on the movable frame 322. A rotating liquid tank 412 is fixedly fixed at the opposite ends of the symmetrical mounting shafts 334, which is rotatably connected to and communicates with the fixed liquid tank 411. A plurality of nozzles 413 are uniformly fixedly fixed on the side of the rotating liquid tank 412 away from the corresponding fixed liquid tank 411, which correspond one-to-one with the slots at the end of the corresponding taps 335 and communicate with the rotating liquid tank 412. The end of the nozzle 413 away from the corresponding rotating liquid tank 412 is aligned with the corresponding slot on the corresponding tap 335.

[0049] When the mounting shaft 334 drives the tap 335 to perform rotary feed tapping on the corresponding end of the protective tube on the same side, the mounting shaft 334 simultaneously drives the rotating liquid tank 412 and the nozzle 413 on the same side to rotate synchronously. The fixed liquid tank 411 on the same side simultaneously continuously inputs coolant into the corresponding rotating liquid tank 412. The rotating liquid tank 412 then sprays the coolant through the nozzle 413 into the corresponding groove of the tap 335. As the tap 335 continues to rotate and feed, the coolant sprayed in the groove is continuously and evenly guided into the inner surface of the corresponding end of the protective tube, thereby directly cooling the inner side of the corresponding end of the protective tube. The above operation method can not only directly and efficiently cool the tapping area at the end of the protective tube, improving the cooling efficiency of the coolant and avoiding the impact of cutting heat on the forming quality of the internal thread, but also greatly reduce the cutting resistance of the tap 335, improve the forming quality of the internal thread, extend the service life of the tap 335, and further improve the efficiency of chip removal in the internal thread hole.

[0050] Please see Figure 1 , Figure 5 and Figure 6 The infusion unit 42 includes an infusion tube 421 fixedly disposed on the rear side of the corresponding fixed liquid tank 411 and communicating with the fixed liquid tank 411 from front to back. An on / off valve 422 is installed on one end of the infusion tube 421 near the corresponding fixed liquid tank 411. A valve core 423 that moves up and down is slidably disposed inside the on / off valve 422. A through groove that runs from front to back is opened on the valve core 423. A spring rod 424 that moves up and down and is elastically slidably connected to the on / off valve 422 is fixedly disposed on the upper side of the valve core 423. A fixing plate 425 is fixedly disposed on the upper end of the spring rod 424.

[0051] Please see Figure 1 , Figure 5 and Figure 6The opening and closing part 43 includes an L-shaped driven plate 431 rotatably mounted on the upper side of the corresponding fixed plate 425 via a support four. The horizontal section of the L-shaped driven plate 431 is fixedly mounted on the lower end of the corresponding vertical section away from the moving frame 322. A torsion spring shaft 432, which is elastically rotatably connected to the corresponding support four, is symmetrically mounted on the L-shaped driven plate 431. A rotating roller is rotatably mounted on the upper end of the L-shaped driven plate 431. A support block 433 is fixedly mounted on the upper side of the fixed plate 425 and below the horizontal section of the corresponding L-shaped driven plate 431. A U-shaped connecting frame 434 with its opening facing forward is fixedly mounted on the rear side of the U-shaped platform 31. A plurality of U-shaped pressure plates 435, which are evenly distributed on the left and right, with their openings facing upward, and are fixedly connected end to end to each other and located on the upper side of the L-shaped driven plate 431, are fixedly mounted on the lower side of the upper horizontal section of the U-shaped connecting frame 434 via a connecting rod. The U-shaped pressure plate 435 is composed of a horizontal section and symmetrical oblique vertical sections on its left and right sides.

[0052] When the right tap 335 rotates out of the left end of the right protective tube and the left tap 335 rotates to feed and tap the right end of the left protective tube, the moving frame 322 drives the corresponding infusion tube 421 and the on / off valve 422 to move synchronously through the fixed liquid tank 411. The on / off valve 422 then drives the corresponding spring rod 424 and the fixed plate 425 to move synchronously through the valve core 423. The fixed plate 425 then drives the corresponding L-shaped driven plate 431 to move to the left along the lower side of the corresponding U-shaped pressure plate 435.

[0053] Because the lower side of the horizontal section of the right-side L-shaped driven plate 431 is supported by the upper surface of the corresponding support block 433 and cannot rotate to the right, the roller at the upper end of the vertical section of the right-side L-shaped driven plate 431 continues to move downward under the pressure of the vertical section of the corresponding U-shaped pressure plate 435. The right-side L-shaped driven plate 431 then continuously drives the corresponding spring rod 424 and valve core 423 downward through the fixing plate 425 until the roller at the upper end of the vertical section of the right-side L-shaped driven plate 431 is located below the horizontal section of the corresponding U-shaped pressure plate 435. At this point, the through groove on the valve core 423 has been stably sealed by the inner surface of the opening and closing valve 422, thus allowing the right... The side infusion pipe 421 cannot input coolant into the corresponding fixed liquid chamber 411 and rotating liquid chamber 412 until the right tap 335 is completely withdrawn from the left end of the right protective pipe. At this time, the roller at the upper end of the vertical section of the right L-shaped driven plate 431 gradually moves upward and resets to the highest position under the action of the left oblique vertical section of the corresponding U-shaped pressure plate 435. The through groove on the right valve core 423 gradually opens, and the right infusion pipe 421 then continues to input coolant into the corresponding fixed liquid chamber 411 and rotating liquid chamber 412. The right nozzle 413 then sprays coolant onto the corresponding tap 335 to wash away the chips generated during tapping.

[0054] The roller at the upper end of the vertical section of the left-side L-shaped driven plate 431, under the action of the oblique vertical section on the right side of the corresponding U-shaped pressure plate 435, drives the L-shaped driven plate 431 to deflect to the right. This prevents the left-side L-shaped driven plate 431 from driving the corresponding spring rod 424 and valve core 423 to move downward. The through groove on the left-side valve core 423 continues to open under the action of the corresponding spring rod 424, and the left-side liquid delivery pipe 421 continuously inputs coolant into the corresponding fixed liquid tank 411 and rotating liquid tank 412. The nozzle 413 on the left side continuously sprays coolant into the slot on the corresponding tap 335, thereby cooling the machining area inside the right end of the left protective tube directly during the tapping process of the left tap 335. This continues until the left tap 335 completes the tapping process on the right end of the left protective tube. At this time, the left L-shaped driven plate 431 gradually rotates to the left and resets under the elastic action of the corresponding torsion spring shaft 432 and the action of the left oblique vertical section of the corresponding U-shaped pressure plate 435.

[0055] The above-described operation method can adaptively adjust the coolant delivery and usage according to the working status and moving direction of the corresponding tap 335, which not only ensures the overall cooling and usage effect of the coolant, but also improves the overall usage efficiency of the coolant and reduces the overall usage cost of the coolant.

[0056] This invention also provides a method for processing Mpp cable protection pipes, the steps of which are as follows:

[0057] Step 1: Raw material preparation: Select high-quality modified polypropylene resin as the main raw material, ensuring that it has the required physical and chemical properties, and add the necessary additives to improve the processing performance of the material and the performance of the final product.

[0058] Step 2, Extrusion Molding: MPP resin and additives are added to the extruder hopper in proportion. The material is melted into a uniform melt by heating and the shearing action of the screw. The molten material is then extruded through the die into the desired tubular shape. Finally, the extruded tube is continuously pulled out by the traction device.

[0059] Step 3, Cooling and Shaping: The extruded pipe is rapidly cooled using a water tank or spray device to quickly solidify and shape it.

[0060] Step 4: Cutting: When the cooled and shaped pipe reaches the predetermined length, it is cut into a protective pipe of the required length by an automatic cutting machine.

[0061] Step 5, thread tapping: Multiple protective tubes are sequentially guided and clamped to the left and right sides of the tapping mechanism 3 by the feeding mechanism 2. Then, the tapping mechanism 3 sequentially taps the internal threads of the clamped tube ends on the left and right sides. At the same time, the cooling mechanism 4 cools the inner surface of the corresponding tube ends. Finally, the feeding mechanism 2 releases the tapped protective tubes for unloading.

[0062] Step Six: Quality Inspection: Inspect the surface of the protective tube for defects to ensure that the appearance quality is up to standard. Use measuring tools to measure the key dimensions of the protective tube to ensure that they meet the standard requirements. Finally, conduct a series of performance tests on the protective tube to ensure that it has good mechanical properties and durability.

[0063] 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. A processing device for Mpp cable protection pipes, comprising symmetrically distributed operating tables, characterized in that: The operating platform is equipped with a feeding mechanism for loading and unloading protective tubes. A tapping mechanism for tapping the end of the protective tube is provided between the left and right symmetrical operating platforms. A cooling mechanism for cooling the inner surface of the end of the protective tube is provided on the tapping mechanism. The feeding mechanism includes a pipe guide part disposed on the upper side of the operating table, a pipe clamping part disposed on both the operating table and the pipe guide part, and a pipe positioning part disposed on the upper side of the operating table and between the pipe clamping parts. The tapping mechanism includes an upward-facing U-shaped platform fixedly arranged between two symmetrical operating tables. A transverse driving part is provided on the U-shaped platform, and a tapping part is provided on the transverse driving part. The cooling mechanism includes a transverse drive section and a cooling section for injecting coolant. The cooling section is located on the tapping section. A liquid delivery section for conveying coolant is provided on the rear side of the cooling section. An opening and closing section for controlling the delivery of coolant is provided together on the liquid delivery section and the U-shaped platform.

2. The Mpp cable protection pipe processing device according to claim 1, characterized in that: The pipe guide section includes guide platforms that are symmetrically fixed on the upper side of the operating table. On the opposite side of each symmetrical guide platform, there are L-shaped guide plates and oblique guide plates that are distributed vertically.

3. The Mpp cable protection pipe processing device according to claim 2, characterized in that: The pipe clamping part includes a vertically penetrating discharge port on the operating table and in front of the guide table. On the upper side of the operating table and above the discharge port, fixed clamping components are symmetrically fixed on the left and right sides by a support. On the opposite side of the symmetrical guide table, a hydraulic cylinder is fixedly installed by a support. The telescopic end of the hydraulic cylinder is fixedly installed with a movable clamping component that moves back and forth and cooperates with the corresponding fixed clamping component to clamp the protective pipe. The movable clamping component is located below the corresponding inclined guide plate.

4. The Mpp cable protection pipe processing device according to claim 1, characterized in that: The pipe positioning part includes a positioning platform fixedly installed on the upper side of the operating table and located behind the discharge port. A positioning rotating plate is rotatably installed on the front side of the positioning platform. A torsion spring rotating shaft is symmetrically fixed at the left and right ends of the positioning rotating plate and elastically rotatably connected to the front side of the corresponding positioning platform. The upper end of the positioning rotating plate is an inclined surface.

5. The Mpp cable protection pipe processing device according to claim 1, characterized in that: The lateral drive unit includes a hydraulic cylinder two fixedly mounted on the upper side of the horizontal section of the U-shaped platform via a support three. The telescopic end of the hydraulic cylinder two is fixedly mounted with a movable frame that moves left and right. Two sets of guide rods that are slidably connected to the corresponding vertical section of the U-shaped platform are symmetrically mounted on the left and right sides of the movable frame. Each set consists of symmetrical guide rods.

6. The Mpp cable protection pipe processing device according to claim 5, characterized in that: The tapping part includes a motor fixedly installed on the front side of the moving frame. The drive end of the motor is equipped with a worm gear rotatably installed inside the moving frame. The upper side of the worm gear is meshed with a worm wheel rotatably connected to the moving frame. The left and right sides of the worm wheel are symmetrically fixed with mounting shafts rotatably connected to the moving frame. Taps are installed on opposite sides of the left and right symmetrical mounting shafts.

7. The Mpp cable protection pipe processing device according to claim 6, characterized in that: The cooling section includes fixed liquid tanks symmetrically fixed on the movable frame. Rotating liquid tanks that are rotatably connected to and communicate with the fixed liquid tanks are fixedly installed at opposite ends of the symmetrical mounting shafts. Multiple nozzles that correspond one-to-one with the slots at the ends of the corresponding taps and communicate with the rotating liquid tanks are uniformly fixedly installed on the side of the rotating liquid tanks away from the corresponding fixed liquid tanks. The end of the nozzle away from the corresponding rotating liquid tank is aligned with the corresponding slot on the corresponding tap.

8. The Mpp cable protection pipe processing device according to claim 7, characterized in that: The infusion unit includes an infusion tube fixedly installed on the rear side of the corresponding fixed liquid tank and connected to the front and rear of the fixed liquid tank. An on / off valve is installed on one end of the infusion tube near the corresponding fixed liquid tank. A valve core that moves up and down is slidably installed inside the on / off valve. A through groove that runs through the front and rear is opened on the valve core. A spring rod that moves up and down and is elastically slidably connected to the on / off valve is fixedly installed on the upper side of the valve core. A fixing plate is fixedly installed on the upper end of the spring rod.

9. The Mpp cable protection pipe processing device according to claim 8, characterized in that: The opening and closing part includes an L-shaped driven plate rotatably mounted on the upper side of the corresponding fixed plate via a support four. The horizontal section of the L-shaped driven plate is fixedly mounted on the lower end of the corresponding vertical section away from the moving frame. A torsion spring shaft two, which is elastically rotatably connected to the corresponding support four, is symmetrically fixed on the L-shaped driven plate. A rotating roller is rotatably mounted on the upper end of the L-shaped driven plate. A support block is fixedly mounted on the upper side of the fixed plate and below the horizontal section of the corresponding L-shaped driven plate. A U-shaped connecting frame with its opening facing forward is fixedly mounted on the rear side of the U-shaped platform. Multiple U-shaped pressure plates, which are evenly distributed on the left and right, with their openings facing upward, are fixedly connected end to end to each other and located on the upper side of the L-shaped driven plate, are fixedly mounted on the lower side of the upper horizontal section of the U-shaped connecting frame via a connecting rod.

10. A method for processing an Mpp cable protection pipe, characterized in that: The process, performed using the Mpp cable protection pipe processing device as described in claim 1, includes the following steps: Step 1: Raw material preparation: Select high-quality modified polypropylene resin as the main raw material to ensure that it has the required physical and chemical properties, and add the required additives to improve the processing performance of the material and the performance of the final product. Step 2, Extrusion Molding: MPP resin and additives are added to the extruder hopper in proportion. The material is melted into a uniform melt by heating and the shearing action of the screw. The molten material is then extruded through the die into the required tubular shape. Finally, the extruded tube is continuously pulled out by the traction device. Step 3, Cooling and Shaping: The extruded pipe is rapidly cooled using a water tank or spray device to quickly solidify and shape it; Step 4: Cutting: When the cooled and shaped pipe reaches the predetermined length, it is cut into a protective pipe of the required length by an automatic cutting machine; Step 5, thread tapping: The feeding mechanism guides multiple protective tubes to be fed in sequence and clamped and fixed on the left and right sides of the tapping mechanism. Then, the tapping mechanism performs internal thread tapping on the ends of the tubes clamped and fixed on the left and right sides in sequence. At the same time, the cooling mechanism cools the inner surface of the corresponding tube ends. Finally, the feeding mechanism releases the tapped protective tubes and unloads them. Step Six: Quality Inspection: Inspect the surface of the protective tube for defects to ensure that the appearance quality is up to standard. Use measuring tools to measure the key dimensions of the protective tube to ensure that they meet the standard requirements. Finally, conduct a series of performance tests on the protective tube to ensure that it has good mechanical properties and durability.

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