Mpp cable protection pipe processing device and processing method

Abstract

The invention 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.The Mpp cable protection pipe processing device is characterized in that a feeding mechanism is arranged on an operation table, a tapping mechanism is jointly arranged between the operation tables which are in bilateral symmetry, and a cooling mechanism is arranged on the tapping mechanism; by means of the tapping mechanism, in the process that a screw tap on one side is driven to retreat from the corresponding end of the protection pipe on the same side in an anticlockwise rotating mode, a screw tap on the other side is synchronously driven to conduct clockwise feeding tapping on the corresponding end of the protection pipe on the same side; the withdrawing time and the feeding tapping time of the whole screw taps on the two sides completely coincide, and seamless connection machining is achieved; by means of the cooling mechanism, cooling liquid can be accurately and stably injected into the multiple open grooves in the machining end of the screw tap, and the cooling liquid can be directly, rapidly and evenly injected into the end of a protection pipe through the open grooves in the screw tap in the protection pipe tapping machining process.

Description

Technical Field

[0001] The invention relates to the technical field of Mpp cable protection tube processing, and in particular to an Mpp cable protection tube processing device and a processing method. Background Art

[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 made of modified polypropylene material. The end of the protective tube generally needs to be tapped to form an internal thread to facilitate installation and fixation with other protective tubes or connecting accessories. The cutting end of the tap usually has multiple grooves evenly opened around the circumference.

[0003] In the prior art, since plastic materials are easily affected by the heat generated during the tapping process and may be locally softened or melted, when the end of the MPP cable protection tube is processed for internal thread, 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 rotated and fed in a clockwise direction to process the internal thread of the end of the protection tube, and then rotated counterclockwise to withdraw after the processing is completed to prevent extrusion and wear of the processed internal thread, and can also assist in the discharge of chips from the end of the protection tube.

[0004] However, the traditional method of tapping the internal thread of the end of the protective tube has the following problems: 1. In the prior art, when tapping the internal thread of the end of the protective tube, due to the certain thickness of the protective tube itself, the coolant sprayed on the outer surface of the protective tube is difficult to effectively penetrate into the inner surface of the end of the protective tube for timely and effective cooling, which not only leads to low cooling efficiency of the coolant and a certain degree of waste, but also leads to poor cooling effect on the inner surface of the end of the protective tube, thereby affecting the forming quality of the tapping of the internal thread of the end of the protective tube; 2. In the prior art, after the tap is completed on the tapping of the internal thread of the end of the protective tube, the tap needs to be reversed and withdrawn and reset. Since the withdrawal time of the tap 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 operation method of the tap also greatly limits the overall production capacity of the protective tube processing production line. Summary of the invention

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an Mpp cable protection tube processing device, comprising left-right symmetrically distributed operating tables, on which a loading mechanism for loading and unloading the protection tube is arranged, and a tapping mechanism for tapping the end of the protection tube is arranged between the left-right symmetrical operating tables, and a cooling mechanism for cooling the inner surface of the end of the protection tube is arranged on the tapping mechanism.

[0006] The feeding mechanism comprises a pipe guide portion arranged on the upper side of the operating table, a pipe clamping portion is arranged on the operating table and the pipe guide portion, and a pipe positioning portion is arranged on the upper side of the operating table and between the pipe clamping portions.

[0007] The tapping mechanism comprises a U-shaped platform with an opening facing upwards, which is fixedly arranged between left-right symmetrical operating tables. A transverse driving part is arranged on the U-shaped platform, and a tapping part is arranged on the transverse driving part.

[0008] The cooling mechanism includes a cooling part for spraying cooling liquid, which is commonly arranged on the transverse driving part and the tapping part; an infusion part for conveying cooling liquid is arranged on the rear side of the cooling part; and an opening and closing part for controlling the conveying of cooling liquid is commonly arranged on the infusion part and the U-shaped platform.

[0009] Preferably, the pipe guide portion includes a guide platform symmetrically fixedly arranged on the upper side of the operating table, and an L-shaped guide plate and an inclined guide plate distributed vertically are fixedly arranged on opposite sides of the symmetrical guide platform.

[0010] Preferably, the pipe clamping part includes a discharge port that passes through the upper and lower parts of the operating table and is located in front of the guide platform. A fixed clamping member is symmetrically fixedly arranged on the upper side of the operating table and above the discharge port through a support one. A hydraulic cylinder one is fixedly arranged on the opposite side of the left-right symmetrical guide platform through a support two. A movable clamping member that moves forward and backward and cooperates with the corresponding fixed clamping member to clamp the protective tube is fixedly arranged at the telescopic end of the hydraulic cylinder one, wherein the movable clamping member is located below the corresponding inclined guide plate.

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

[0012] Preferably, the lateral driving part includes a hydraulic cylinder 2 fixedly arranged on the upper side of the horizontal section of the U-shaped platform through a support 3, a movable frame that moves left and right is fixedly arranged at the telescopic end of the hydraulic cylinder 2, and two groups of guide rods slidably connected to the corresponding vertical sections of the U-shaped platform are symmetrically fixedly arranged on the left and right sides of the movable frame, and each group is composed of guide rods that are symmetrical front and back.

[0013] Preferably, the tapping part includes a motor fixedly arranged on the front side of the movable frame, a driving end of the motor is equipped with a worm rotatably arranged inside the movable frame, the upper side of the worm is meshingly connected with a worm wheel rotatably connected to the movable frame, the left and right sides of the worm wheel are symmetrically fixed with mounting shafts rotatably connected to the movable frame, and taps are installed on opposite sides of the left and right symmetrical mounting shafts.

[0014] Preferably, the cooling portion includes a fixed liquid bin symmetrically fixed on the movable frame, and a rotating liquid bin rotatably connected to the fixed liquid bin and interconnected is fixedly arranged at opposite ends of the symmetrical installation axes. A plurality of nozzles corresponding to the corresponding grooves at the end of the tap and interconnected with the rotating liquid bin are evenly fixedly arranged on one side of the rotating liquid bin away from the corresponding fixed liquid bin in a circumferential direction, and the nozzles are one-to-one corresponding to the corresponding grooves on the end of the tap and interconnected with the rotating liquid bin, and one end of the nozzle away from the corresponding rotating liquid bin is aligned with the corresponding groove on the corresponding tap.

[0015] Preferably, the infusion part includes an infusion tube fixedly arranged on the rear side of the corresponding fixed liquid tank and connected with the fixed liquid tank front and back, an opening and closing valve is installed on one end of the infusion tube close to the corresponding fixed liquid tank, a valve core that moves up and down is slidably arranged in the opening and closing valve, a through groove that passes through the front and back is arranged on the valve core, a spring rod that moves up and down and is elastically slidably connected to the opening and closing valve is fixedly arranged on the upper side of the valve core, and a fixed plate is fixedly arranged on the upper end of the spring rod.

[0016] Preferably, the opening and closing part includes an L-shaped driven plate rotatably arranged on the upper side of the corresponding fixed plate through a fourth support, the horizontal section of the L-shaped driven plate is fixedly arranged on the lower end of the corresponding vertical section away from the movable frame, and a torsion spring rotating shaft two elastically rotatably connected to the corresponding fourth support is symmetrically fixedly arranged on the L-shaped driven plate front and back, a roller is rotatably arranged on the upper end of the L-shaped driven plate, a support block is fixedly arranged 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 arranged on the rear side of the U-shaped table, and a plurality of U-shaped pressure plates evenly distributed left and right, opening upward, fixedly connected end to end to each other and located on the upper side of the L-shaped driven plate are fixedly arranged on the lower side of the upper horizontal section of the U-shaped connecting frame through a connecting rod.

[0017] A method for processing an Mpp cable protection tube comprises the following steps: Step 1. Raw material preparation: Select high-quality modified polypropylene resin as the main raw material, ensure that it has the required physical and chemical properties, and add the required additives to improve the processing properties of the material and the performance of the final product.

[0018] Step 2: Extrusion molding: Add MPP resin and additives into the extruder hopper in proportion, melt the materials into a uniform melt through heating and the shearing action of the screw, and extrude the molten material into the desired tubular shape through a die, and finally pull the extruded tube continuously through a traction device.

[0019] Step 3: Cooling and shaping: The extruded pipe is quickly cooled through a water tank or spray device to quickly solidify and shape it.

[0020] Step 4: Cutting: When the cooled and shaped pipe reaches the predetermined length, it is cut into protective pipes of the required length by an automatic cutting machine.

[0021] Step 5, thread tapping: guide and load multiple protective tubes in turn through the feeding mechanism and clamp them on the left and right sides of the tapping mechanism, and then tap the internal threads of the clamped pipe ends on the left and right sides respectively through the tapping mechanism, and at the same time cooperate with the cooling mechanism to cool the inner surface of the corresponding pipe end, and finally release the tapped protective tubes through the feeding mechanism.

[0022] Step 6. Quality inspection: Check whether there are any defects on the surface of the protective tube to ensure that the appearance quality is qualified, and use measuring tools to measure the key dimensions of the protective tube to ensure that it meets the standard requirements. Finally, conduct a series of performance tests on the protective tube to ensure that it has good mechanical properties and durability.

[0023] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention uses a tapping mechanism to achieve that in the process of driving the tap on one side to rotate counterclockwise and withdraw from the corresponding end of the protection tube on the same side, the tap on the other side is simultaneously driven to feed clockwise and tap the corresponding end of the protection tube on the same side, so that the overall withdrawal time and feed tapping time of the taps on both sides completely overlap, and seamless connection processing is achieved, thereby greatly reducing the pause time of the overall tapping process of the protection tube, greatly shortening the overall processing cycle of the protection tube, and thus greatly improving the overall processing efficiency of the protection tube and the overall production capacity of the protection tube processing production line.

[0024] 2. The present invention can realize accurate and stable injection of coolant into multiple grooves on the processing end of the tap through the cooling mechanism, so that the coolant can be directly, quickly and evenly injected into the end of the protective tube from each groove on the tap during the tapping process of the protective tube, thereby not only being able to directly and efficiently cool the tapping processing area in a timely manner, improving the cooling efficiency of the coolant, and avoiding the influence of cutting heat on the forming quality of the internal thread, but the coolant can also greatly reduce the cutting resistance of the tap, improve the forming quality of the internal thread, extend the service life of the tap, and further improve the efficiency of chip discharge in the internal thread hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the structure of the present invention.

[0026] Figure 2 It is a partial cross-sectional schematic diagram of the structure of the feeding mechanism.

[0027] Figure 3 It is a partial cross-sectional schematic diagram of the tapping mechanism structure.

[0028] Figure 4 for Figure 3 Enlarged schematic diagram at point A in the middle.

[0029] Figure 5It is a partial cross-sectional schematic diagram of the cooling mechanism structure.

[0030] Figure 6 It is a partial cross-sectional schematic diagram of the opening and closing part structure.

[0031] In the figure: 1, operating table; 2, feeding mechanism; 21, pipe guide; 211, guide table; 212, L-shaped guide plate; 213, oblique guide plate; 22, pipe clamping part; 221, fixed clamping member; 222, hydraulic cylinder 1; 223, mobile clamping member; 23, pipe positioning part; 231, positioning table; 232, positioning rotating plate; 233, torsion spring rotating shaft 1; 3, tapping mechanism; 31, U-shaped table; 32, horizontal driving part; 321, hydraulic cylinder 2; 322, mobile frame; 323, guide rod; 33, Tapping unit; 331, motor; 332, worm; 333, worm wheel; 334, mounting shaft; 335, tap; 4, cooling mechanism; 41, cooling unit; 411, fixed liquid tank; 412, rotating liquid tank; 413, nozzle; 42, infusion unit; 421, infusion tube; 422, opening and closing valve; 423, valve core; 424, spring rod; 425, fixed plate; 43, opening and closing unit; 431, L-shaped follower plate; 432, torsion spring rotating shaft 2; 433, support block; 434, U-shaped connecting frame; 435, U-shaped pressure plate. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] See also Figure 1 A Mpp cable protection tube processing device comprises a left-right symmetrically distributed operating table 1, on which a loading mechanism 2 for loading and unloading the protection tube is arranged, and a tapping mechanism 3 for tapping the end of the protection tube is arranged between the left-right symmetrical operating tables 1, and a cooling mechanism 4 for cooling the inner surface of the end of the protection tube is arranged on the tapping mechanism 3.

[0034] See also Figure 1 The feeding mechanism 2 includes a pipe guide portion 21 arranged on the upper side of the operating platform 1, a pipe clamping portion 22 is commonly arranged on the operating platform 1 and the pipe guide portion 21, and a pipe positioning portion 23 is arranged on the upper side of the operating platform 1 and between the pipe clamping portions 22.

[0035] See also Figure 1 and Figure 2The pipe guide part 21 includes a guide platform 211 symmetrically fixedly arranged on the upper side of the operating table 1, and an L-shaped guide plate 212 and an inclined guide plate 213 distributed vertically are fixedly arranged on opposite sides of the symmetrical guide platform 211.

[0036] See also Figure 1 and Figure 2 The pipe clamping part 22 includes a feeding port that passes through from top to bottom on the operating platform 1 and is located in front of the guide platform 211. A fixed clamping member 221 is fixedly arranged on the upper side of the operating platform 1 and above the feeding port through a support 1, and a hydraulic cylinder 1 222 is fixedly arranged on the opposite side of the left-right symmetrical guide platform 211 through a support 2. A movable clamping member 223 that moves forward and backward and cooperates with the corresponding fixed clamping member 221 to clamp the protective tube is fixedly arranged at the telescopic end of the hydraulic cylinder 1 222, wherein the movable clamping member 223 is located below the corresponding inclined guide plate 213.

[0037] See also Figure 1 and Figure 2 The pipe positioning part 23 includes a positioning platform 231 fixedly arranged on the upper side of the operating table 1 and located behind the unloading port. A positioning rotating plate 232 is rotatably arranged on the front side of the positioning platform 231. The left and right ends of the positioning rotating plate 232 are symmetrically fixed with a torsion spring rotating shaft 233 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.

[0038] The corresponding movable clamping member 223 is driven by the hydraulic cylinder 222 to move backward to the rear side of the lower end of the corresponding oblique guide plate 213, and the protective tube at the bottom between the corresponding L-shaped guide plate 212 and the oblique guide plate 213 falls to the upper side of the corresponding positioning platform 231 and is located between the corresponding movable clamping member 223 and the positioning rotating plate 232, while the protective tube adjacent to the upper side of the protective tube is located between the lower end of the corresponding L-shaped guide plate 212 and the oblique guide plate 213. At this time, the movable clamping member 223 is driven by the hydraulic cylinder 222 to move forward again, and the movable clamping member 223 is synchronously moved. The protective tube on the upper side of the positioning platform 231 is driven to move forward and press the corresponding positioning rotating plate 232 to make it rotate forward to make way until the movable clamp 223 and the corresponding fixed clamp 221 stably clamp and fix the protective tube. At this time, the protective tube is just disengaged from the corresponding positioning rotating plate 232, and the positioning rotating plate 232 is then rotated backward and reset under the elastic action of the corresponding torsion spring shaft 233. At the same time, the protective tube between the lower end of the corresponding L-shaped guide plate 212 and the oblique 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 movable clamp 223.

[0039] When the tapping process of the clamped fixed protective tube is completed by the tapping mechanism 3, the corresponding movable clamping member 223 is driven by the hydraulic cylinder 222 to move backward again to the rear side of the lower end of the corresponding inclined guide plate 213, and the protective tube is blocked by the corresponding positioning rotating plate 232 on the rear side and then falls downward stably into the discharge port to complete the discharge. At this time, the protective tube at the bottom between the corresponding L-shaped guide plate 212 and the inclined guide plate 213 also falls to the upper side of the corresponding positioning platform 231 to wait for clamping.

[0040] See also Figure 1 The tapping mechanism 3 includes a U-shaped platform 31 with an upward opening and fixedly arranged between the left and right symmetrical operating tables 1, a transverse driving part 32 is arranged on the U-shaped platform 31, and a tapping part 33 is arranged on the transverse driving part 32.

[0041] See also Figure 1 and Figure 3 The lateral driving part 32 includes a hydraulic cylinder 2 321 fixedly arranged on the upper side of the horizontal section of the U-shaped platform 31 through a support 3, and a movable frame 322 that moves left and right is fixedly arranged at the telescopic end of the hydraulic cylinder 2 321. Two groups of guide rods 323 that are slidably connected to the corresponding vertical sections of the U-shaped platform 31 are symmetrically fixedly arranged on the left and right sides of the movable frame 322, and each group is composed of guide rods 323 that are symmetrical front and back.

[0042] See also Figure 1 and Figure 3 The tapping part 33 includes a motor 331 fixedly arranged on the front side of the moving frame 322, a worm 332 rotatably arranged inside the moving frame 322 is installed on the driving end of the motor 331, a worm 332 is meshedly connected with a worm wheel 333 rotatably connected to the moving frame 322 on the upper side of the worm 332, and mounting shafts 334 rotatably connected to the moving frame 322 are symmetrically fixedly arranged on the left and right sides of the worm wheel 333, and taps 335 are installed on the opposite sides of the left and right symmetrical mounting shafts 334.

[0043] First, a protective tube to be tapped is clamped and fixed by the cooperation of the mobile clamping piece 223 and the fixed clamping piece 221 on the right side, and then the worm 332 is driven by the motor 331 to rotate in a directional manner, so that the worm 332 drives the installation shaft 334 and the tap 335 to rotate clockwise relative to the left end of the right protective tube through the meshing transmission with the worm wheel 333, and at the same time, the mobile frame 322 is driven to move to the right by the hydraulic cylinder 2 321, so that the tap 335 on the right side performs clockwise feeding and tapping on 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 mobile clamping piece 223 and the fixed clamping piece 221 on the left side are cooperated to clamp and fix the protective tube to be tapped, and then the worm 332 is driven in the reverse direction by the motor 331. The worm 332 rotates so that the mounting shaft 334 and the tap 335 on the worm wheel 333 rotate counterclockwise relative to the left end of the right protective tube and clockwise relative to the right end of the left protective tube, and at the same time, the movable frame 322 is driven to move leftward by the hydraulic cylinder 2 321, so that the tap 335 on the right rotates to exit the left end of the right protective tube, and at the same time, 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 completely exits 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 protective tube that has completed the tapping process is unloaded through the cooperation of the movable clamp 223 and the fixed clamp 221 on the right, and another protective tube to be tapped is loaded, clamped and fixed.

[0044] The above-mentioned operation method can realize that in the process of driving the right side tap 335 to rotate counterclockwise and exit from the left end of the right protective tube, the left side tap 335 is simultaneously driven to feed clockwise and tap the right end of the left protective tube, so that the overall withdrawal time and feed tapping time of the taps 335 on both sides are completely overlapped, and seamless processing is achieved, thereby greatly reducing the pause time of the overall tapping process of the protective tube, greatly shortening the overall processing cycle of the protective tube, and thus greatly improving the overall processing efficiency of the protective tube and the overall production capacity of the protective tube processing production line.

[0045] See also Figure 1 The cooling mechanism 4 includes a cooling part 41 for spraying coolant, which is commonly arranged on the transverse driving part 32 and the tapping part 33. A liquid infusion part 42 for conveying coolant is arranged on the rear side of the cooling part 41. An opening and closing part 43 for controlling the conveying of coolant is commonly arranged on the liquid infusion part 42 and the U-shaped platform 31.

[0046] See also Figure 1 , Figure 3 and Figure 4The cooling part 41 includes a fixed liquid bin 411 which is symmetrically fixed on the movable frame 322. A rotating liquid bin 412 which is rotatably connected to the fixed liquid bin 411 and communicated with each other is fixedly arranged at the opposite ends of the symmetrical installation shafts 334. A plurality of nozzles 413 which correspond to the grooves at the ends of the corresponding taps 335 and communicated with the rotating liquid bin 412 are evenly fixedly arranged on one side of the rotating liquid bin 412 away from the corresponding fixed liquid bin 411. The nozzles 413 have one end which is away from the corresponding rotating liquid bin 412 aligned with the corresponding groove on the corresponding tap 335.

[0047] When the installation shaft 334 drives the tap 335 to perform rotational feeding and tapping processing on the corresponding end of the protection tube on the same side, the installation shaft 334 drives the rotating liquid tank 412 and the nozzle 413 on the same side to rotate synchronously, and the fixed liquid tank 411 on the same side continuously inputs coolant into the corresponding rotating liquid tank 412 synchronously, and the rotating liquid tank 412 then sprays the coolant into the corresponding groove of the tap 335 through the nozzle 413. As the tap 335 continues to rotate and feed, the coolant sprayed in the groove is continuously and evenly guided to be injected into the inner surface of the corresponding end of the protection tube, thereby directly cooling the inner side of the corresponding end of the protection tube. The above-mentioned operation method can not only directly and efficiently cool the tapping processing area of ​​the end of the protection tube in a timely and efficient manner, improve the cooling efficiency of the coolant, and avoid the influence of cutting heat on the forming quality of the internal thread, but also the coolant can 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 discharge in the internal thread hole.

[0048] See also Figure 1 , Figure 5 and Figure 6 The infusion part 42 includes an infusion tube 421 fixedly arranged at the rear side of the corresponding fixed liquid tank 411 and connected with the fixed liquid tank 411 front to back, an opening and closing valve 422 is installed on the end of the infusion tube 421 close to the corresponding fixed liquid tank 411, a valve core 423 that moves up and down is slidably arranged in the opening and closing valve 422, a through groove that passes through the front and back is opened on the valve core 423, a spring rod 424 that moves up and down and is elastically slidably connected to the opening and closing valve 422 is fixedly arranged on the upper side of the valve core 423, and a fixing plate 425 is fixedly arranged on the upper end of the spring rod 424.

[0049] See also Figure 1 , Figure 5 and Figure 6The opening and closing portion 43 includes an L-shaped driven plate 431 which is rotatably arranged on the upper side of the corresponding fixed plate 425 through a fourth support, the horizontal section of the L-shaped driven plate 431 is fixedly arranged on the lower end of the corresponding vertical section away from the movable frame 322, the L-shaped driven plate 431 is symmetrically fixed with a torsion spring rotating shaft 432 which is elastically rotatably connected to the corresponding fourth support, the upper end of the L-shaped driven plate 431 is rotatably arranged with a roller, a supporting block 433 is fixedly arranged 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 an opening facing forward is fixedly arranged on the rear side of the U-shaped platform 31, a plurality of U-shaped pressing plates 435 which are evenly distributed on the left and right, open upward, fixedly connected to each other end to end and located on the upper side of the L-shaped driven plate 431 are fixedly arranged on the lower side of the horizontal section of the upper end of the U-shaped connecting frame 434 through a connecting rod, the U-shaped pressing plate 435 is composed of a horizontal section and oblique vertical sections symmetrical on its left and right sides.

[0050] When the right tap 335 rotates to exit 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 movable frame 322 drives the corresponding infusion tube 421 and the opening and closing valve 422 to move synchronously through the fixed liquid tank 411, and the opening and closing valve 422 drives the corresponding spring rod 424 and the fixed plate 425 to move synchronously through the valve core 423, and the fixed plate 425 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.

[0051] Since the lower side of the horizontal section of the right 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 L-shaped driven plate 431 continues to move downward under the pressure of the right oblique vertical section of the corresponding U-shaped pressure plate 435, and the right L-shaped driven plate 431 continues to drive the corresponding spring rod 424 and the valve core 423 to move downward through the fixing plate 425 until the roller at the upper end of the vertical section of the right L-shaped driven plate 431 is located at the lower side of the horizontal section of the corresponding U-shaped pressure plate 435. At this time, the through groove on the valve core 423 has been stably closed by the inner surface of the opening and closing valve 422, so that the right The side liquid infusion pipe 421 cannot input coolant into the corresponding fixed liquid tank 411 and the rotating liquid tank 412 until the right tap 335 completely withdraws from the left end of the right protective tube. 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 oblique vertical section on the left side of the corresponding U-shaped pressure plate 435, and the through groove on the right valve core 423 gradually opens. The right liquid infusion pipe 421 then continuously inputs coolant into the corresponding fixed liquid tank 411 and the rotating liquid tank 412 again, and the right nozzle 413 then sprays coolant onto the corresponding tap 335 to wash away the chips generated by tapping.

[0052] The roller at the upper end of the vertical section of the left L-shaped follower plate 431 drives the L-shaped follower plate 431 to deflect to the right under the action of the corresponding oblique vertical section on the right side of the U-shaped pressure plate 435, so that the left L-shaped follower plate 431 cannot drive the corresponding spring rod 424 and the valve core 423 to move downward, and the through groove on the left valve core 423 is continuously opened under the action of the corresponding spring rod 424, and the left infusion tube 421 continuously inputs coolant into the corresponding fixed liquid tank 411 and the rotating liquid tank 412. The nozzle 413 on the left side then continues to spray coolant into the groove on the corresponding tap 335, so that the coolant directly cools the processing area inside the right end of the left protective tube during the feeding and tapping process of the left tap 335, 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.

[0053] The above-mentioned operation method can adaptively adjust the delivery and use of the coolant according to the working state and moving direction of the corresponding tap 335, which not only ensures the overall cooling and use effect of the coolant, but also improves the overall use efficiency of the coolant and reduces the overall use cost of the coolant.

[0054] The present invention also provides a method for processing an Mpp cable protection tube, the steps of which are as follows: Step 1. Raw material preparation: Select high-quality modified polypropylene resin as the main raw material, ensure that it has the required physical and chemical properties, and add the required additives to improve the processing properties of the material and the performance of the final product.

[0055] Step 2: Extrusion molding: Add MPP resin and additives into the extruder hopper in proportion, melt the materials into a uniform melt through heating and the shearing action of the screw, and extrude the molten material into the desired tubular shape through a die, and finally pull the extruded tube continuously through a traction device.

[0056] Step 3: Cooling and shaping: The extruded pipe is quickly cooled through a water tank or spray device to quickly solidify and shape it.

[0057] Step 4: Cutting: When the cooled and shaped pipe reaches the predetermined length, it is cut into protective pipes of the required length by an automatic cutting machine.

[0058] Step 5, thread tapping: multiple protective tubes are guided and loaded in turn through the loading mechanism 2 and clamped and fixed on the left and right sides of the tapping mechanism 3, and then the tapping mechanism 3 taps the internal threads of the clamped and fixed tube ends on the left and right sides respectively, and at the same time cooperates with the cooling mechanism 4 to cool the inner surface of the corresponding tube end, and finally the feeding mechanism 2 is used to release the tapped protective tubes for unloading.

[0059] Step 6. Quality inspection: Check whether there are any defects on the surface of the protective tube to ensure that the appearance quality is qualified, and use measuring tools to measure the key dimensions of the protective tube to ensure that it meets the standard requirements. Finally, conduct a series of performance tests on the protective tube to ensure that it has good mechanical properties and durability.

[0060] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An Mpp cable protection tube processing device, comprising a left-right symmetrically distributed operating table, characterized in that: The operating table is provided with a loading mechanism for loading and unloading the protection tube, and a tapping mechanism for tapping the end of the protection tube is provided between the left and right symmetrical operating tables, and a cooling mechanism for cooling the inner surface of the end of the protection tube is provided on the tapping mechanism; The feeding mechanism comprises a pipe guide portion arranged on the upper side of the operating table, a pipe clamping portion is arranged on the operating table and the pipe guide portion, and a pipe positioning portion is arranged on the upper side of the operating table and between the pipe clamping portions; The tapping mechanism comprises a U-shaped platform with an opening facing upwards, which is fixedly arranged between left-right symmetrical operating tables, a transverse driving part is arranged on the U-shaped platform, and a tapping part is arranged on the transverse driving part; The cooling mechanism includes a cooling part for spraying cooling liquid, which is commonly arranged on the transverse driving part and the tapping part; an infusion part for conveying cooling liquid is arranged on the rear side of the cooling part; and an opening and closing part for controlling the conveying of cooling liquid is commonly arranged on the infusion part and the U-shaped platform.

2. The Mpp cable protection tube processing device according to claim 1 is characterized in that: The pipe guide part comprises a guide platform which is fixedly arranged on the upper side of the operating table symmetrically, and an L-shaped guide plate and an inclined guide plate which are fixedly arranged on opposite sides of the guide platform which are distributed up and down.

3. The Mpp cable protection tube processing device according to claim 2 is characterized in that: The pipe clamping part includes a discharge port that passes through the upper and lower parts of the operating table and is located in front of the guide platform. A fixed clamping piece is symmetrically fixedly arranged on the upper side of the operating table and above the discharge port through a support 1. A hydraulic cylinder 1 is fixedly arranged on the opposite side of the left-right symmetrical guide platform through a support 2. A movable clamping piece that moves forward and backward and cooperates with the corresponding fixed clamping piece to clamp the protective tube is fixedly arranged at the telescopic end of the hydraulic cylinder 1, wherein the movable clamping piece is located below the corresponding inclined guide plate.

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

5. The Mpp cable protection tube processing device according to claim 1, characterized in that: The transverse driving part includes a hydraulic cylinder 2 fixedly arranged on the upper side of the horizontal section of the U-shaped platform through a support 3, a movable frame that moves left and right is fixedly arranged on the telescopic end of the hydraulic cylinder 2, and two groups of guide rods slidably connected to the corresponding vertical sections of the U-shaped platform are symmetrically fixedly arranged on the left and right sides of the movable frame, and each group is composed of guide rods that are symmetrical front and back.

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

7. The Mpp cable protection tube processing device according to claim 6, characterized in that: The cooling part includes a fixed liquid bin fixedly arranged on the movable frame symmetrically on the left and right, and a rotating liquid bin rotatably connected to the fixed liquid bin and interconnected is fixedly arranged at the opposite ends of the symmetrical installation axes on the left and right. A plurality of nozzles corresponding to the corresponding slots at the end of the tap and interconnected with the rotating liquid bin are evenly fixedly arranged on the side of the rotating liquid bin away from the corresponding fixed liquid bin in the circumferential direction, and the nozzles are in one-to-one correspondence with the corresponding slots at the end of the tap and interconnected with the rotating liquid bin, and one end of the nozzle away from the corresponding rotating liquid bin is aligned with the corresponding slot on the corresponding tap.

8. The Mpp cable protection tube processing device according to claim 7, characterized in that: The infusion part includes an infusion tube fixedly arranged at the rear side of the corresponding fixed liquid tank and connected with the fixed liquid tank front and back, an opening and closing valve is installed on one end of the infusion tube close to the corresponding fixed liquid tank, a valve core that moves up and down is slidably arranged in the opening and closing valve, a through groove that passes through the front and back is arranged on the valve core, a spring rod that moves up and down and is elastically slidably connected to the opening and closing valve is fixedly arranged on the upper side of the valve core, and a fixed plate is fixedly arranged on the upper end of the spring rod.

9. The Mpp cable protection tube processing device according to claim 8, characterized in that: The opening and closing part includes an L-shaped driven plate which is rotatably arranged on the upper side of the corresponding fixed plate through a fourth support, the horizontal section of the L-shaped driven plate is fixedly arranged on the lower end of the corresponding vertical section away from the movable frame, the L-shaped driven plate is symmetrically fixed with a torsion spring rotating shaft two which is elastically rotatably connected to the corresponding fourth support, a rotating roller is rotatably arranged on the upper end of the L-shaped driven plate, a supporting block is fixedly arranged 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 an opening facing forward is fixedly arranged on the rear side of the U-shaped table, and a plurality of U-shaped pressure plates which are evenly distributed left and right, open upward, fixedly connected end to end to each other and located on the upper side of the L-shaped driven plate are fixedly arranged on the lower side of the upper horizontal section of the U-shaped connecting frame through a connecting rod.

10. A method for processing an Mpp cable protection tube, characterized in that: The Mpp cable protection tube processing device as claimed in claim 1 is used to complete the process, including the following steps: Step 1: Raw material preparation: Select high-quality modified polypropylene resin as the main raw material, ensure that it has the required physical and chemical properties, and add the required additives to improve the processing properties of the material and the performance of the final product; Step 2: Extrusion molding: Add MPP resin and additives into the extruder hopper in proportion, melt the materials into a uniform melt through heating and the shearing action of the screw, and extrude the molten material into the desired tubular shape through a die, and finally pull the extruded tube out continuously through a traction device; Step 3: Cooling and shaping: The extruded pipe is quickly cooled through a water tank or a 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 protective pipes of the required length by an automatic cutting machine; Step 5, thread tapping: guide and feed multiple protective tubes in turn through the feeding mechanism and clamp and fix them on the left and right sides of the tapping mechanism, and then perform internal thread tapping on the ends of the tubes clamped and fixed on the left and right sides in turn through the tapping mechanism, and at the same time cooperate with the cooling mechanism to cool the inner surface of the corresponding ends of the tubes, and finally release and discharge the tapped protective tubes through the feeding mechanism; Step 6. Quality inspection: Check whether there are any defects on the surface of the protective tube to ensure that the appearance quality is qualified, and use measuring tools to measure the key dimensions of the protective tube to ensure that it meets 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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