An MPP power pipe welding device

Abstract

A MPP power pipe welding device comprises: a clamping mechanism, a moving mechanism, a cutting mechanism and a hot-melt mechanism; by arranging the clamping mechanism, the clamping hands on the clamp A and the clamp B are arranged in four equal parts, which can effectively clamp the power pipeline to prevent the power pipeline from rotating or moving. At the same time, the clamping hands are arranged longer, and the clamping mechanism is used separately from the clamping hands, which can be applicable to power pipelines of various diameters, which is more diverse; by arranging the moving mechanism, the rotation of the motor A can not only drive the cutting barrel and the hot-melt barrel to move, but also drive the connection plate to rotate, thereby driving the thermal pipelines on both sides to be squeezed and connected, reducing manpower requirements and improving work efficiency; by arranging the cutting mechanism and the hot-melt mechanism, the cutting and hot-melt functions are integrated, the inner wall of the power pipeline is cut and chamfered and then hot-melted and connected, avoiding the situation that a piece of the inner wall of the power pipeline protrudes after hot-melting to affect threading.

Description

Technical Field

[0001] The invention relates to the technical field of power pipeline welding, and in particular to an MPP power pipe welding device. Background Art

[0002] MPP power pipe is also called MPP power cable protection pipe or MPP cable protection pipe, which is divided into excavation type and non-excavation type. MPP non-excavation power pipe is also called MPP jacking pipe or dragging pipe;

[0003] MPP power pipes use modified polypropylene as the main raw material. It is a construction project that does not require a large amount of dredging, digging, or damaging the road surface. It can be used to lay pipelines and cables in special areas such as roads, railways, buildings, and riverbeds. Compared with the traditional "trench digging and pipe laying method", trenchless power pipe projects are more in line with current environmental protection requirements and eliminate the dust and traffic congestion caused by traditional construction. This technology can also be used to lay pipelines in areas where excavation operations cannot be carried out, such as historic sites protection areas, downtown areas, crop and farmland protection areas, highways, rivers, etc.

[0004] To this end, the Chinese invention with application number CN201911148218.0 discloses an MPP power pipe hot-melt butt joint device. In view of the technical problem that the existing power pipe hot-melt butt joint device requires manual hot-melt work according to the specifications of the power pipe, resulting in low efficiency, the following scheme is proposed, including a base, a U-shaped rod is fixedly connected to the top of the base, a hollow plate is fixedly connected to the top of the U-shaped rod, a hollow circle is fixedly connected to one side of the hollow plate, an electromagnetic spring is fixedly connected to both ends of one side of the hollow plate, one end of the electromagnetic spring is fixedly connected to an L-shaped rod, one end of the L-shaped rod is fixedly connected to an electromagnetic hot-melt plate, and the electromagnetic hot-melt plate is slidably connected to the hollow plate, the top of the U-shaped rod is fixedly connected to a sliding groove, and the top of the sliding groove is fixedly connected to a pneumatic motor;

[0005] However, through research on the above invention, it is found that the device does not cut and chamfer the inner wall of the power pipeline at the hot-melt connection, which will cause a bulge on the inner wall of the pipe after the hot-melt connection, affecting the threading;

[0006] Therefore, we need to invent an MPP power pipe welding device that can cut and chamfer the inner wall of the power pipe at the hot-melt point. Summary of the invention

[0007] In view of the above problems, the present invention provides an MPP power pipe welding device; by arranging a clamping mechanism, the clamps on the clamps A and B are arranged in four equal parts, which can effectively clamp the power pipeline to prevent the power pipeline from rotating or moving. At the same time, the clamps are arranged longer, and the clamping mechanism is used separately from the clamps, which can be applicable to power pipelines of various diameters, which is more diverse; by arranging a moving mechanism, the rotation of the motor A can not only drive the cutting barrel and the hot melt barrel to move, but also drive the connecting plate to rotate, thereby driving the thermal pipelines on both sides to be extruded and connected, reducing manpower requirements and improving work efficiency; by arranging a cutting mechanism and a hot melt mechanism, the cutting and hot melt functions are integrated, the inner wall of the power pipeline is cut and chamfered and then hot-melted and connected, avoiding the situation where a piece of the inner wall of the power pipeline protrudes after hot melting, affecting threading.

[0008] An MPP power pipe welding device comprises: a clamping mechanism, a moving mechanism, a cutting mechanism and a hot-melting mechanism;

[0009] The MPP power pipe welding device is arranged symmetrically, with a clamping mechanism provided on the front and rear sides respectively. Each of the clamping mechanisms can be removed separately. When the clamping mechanism is removed, a power pipe can be clamped and then fixed to the moving mechanism and the cutting mechanism. A moving mechanism is provided in the middle position of the two clamping mechanisms, and a hot melt mechanism and a part of the cutting mechanism are rotatably installed on the moving mechanism, and the other part of the cutting mechanism is fixed together with the clamping mechanism.

[0010] Further, the clamping mechanism comprises: a clamp A, a clamp B, a curved plate, a connecting block and a heating plate;

[0011] The clip A and the clip B are connected together by a curved plate, and the curved plate can slide in the slide grooves of the clip A and the clip B. The structures of the clip A and the clip B are exactly the same, except that the relative positions of the clip A and the clip B are arranged at 90 degrees. A connecting block is slidably installed in the slide groove of the clip B, and a heating plate is slidably installed at the front end of the connecting block. The heating plate and the connecting block are connected by a spring.

[0012] Furthermore, the clamp A comprises: a collar, an upper clamping plate, a lower clamping plate and a clamping hand;

[0013] The upper clamping plate and the lower clamping plate are hinged together, and the upper clamping plate and the lower clamping plate can be flipped relative to each other. The upper clamping plate and the lower clamping plate are fixed together using a ring. A clamping hand is slidably installed on the upper clamping plate and the lower clamping plate, and the two clamping hands are symmetrically arranged.

[0014] Further, the moving mechanism includes: a motor A, a screw rod A, a moving block, a moving slider A, a connecting plate A, a moving slider B, a connecting plate B, a baffle A, a motor B, a support frame, a fixed shaft, a connecting plate and a sliding ring;

[0015] The motor shaft of the motor A is fixed together with the screw rod A, and a moving slider A and a moving slider B are slidably installed on the screw rod A, and the moving slider A is fixed together with the connecting plate A, and the moving slider B is fixed together with the connecting plate B. The gears on the connecting plate A and the connecting plate B can be meshed with the gears on the motor B, and the motor B is fixed on the moving block. A baffle A is fixed at the end of the moving block, and the lower part of the moving block is fixed to the fixed shaft. Two connecting plates are rotatably installed on the fixed shaft, and the connecting plates are slidably installed in the slide groove of the support frame. There is no contact between the fixed shaft and the support frame, and a sliding ring is rotatably installed on each of the connecting plates.

[0016] Further, the cutting mechanism comprises: a fixed box, a slide panel, a moving rod, a fixed plate, a fixed ring, a motor C, a screw rod B, a slider, a control ring, a cutting barrel, a blade guide rail and a blade;

[0017] The top of the fixed box is covered with a slide groove panel, and the moving rod slides in the two slide grooves of the slide groove panel. A fixed plate is provided at each end of the moving rod. The fixed plate is slidably installed in the slide groove of the moving rod and is connected to the moving rod through a spring. A fixing ring is fixed on each of the fixed plates. The moving rod is fixed together with the slider, and the slider is slidably installed on the screw rod B. The motor shaft of the motor C is fixed together with the screw rod B, and the motor C is fixed inside the fixed box. The cutting barrel is rotatably installed on the connecting plate A, and the outer ring of the cutting barrel is fixed together with the control ring. The control ring is an irregular circular ring. A blade guide is fixed inside the cutting barrel, and a blade is fixed on the blade guide with bolts.

[0018] Further, the hot melt mechanism comprises: a hot melt barrel, a heating rail, a baffle B, a heater and a groove;

[0019] The hot melt barrel is rotatably mounted on a connecting plate B, a baffle B is fixed to the end of the hot melt barrel, a heating rail is fixed to the middle of the hot melt barrel, the heating rail is fixed to the heater, a groove is provided on the heating rail, and the groove is not heated.

[0020] Furthermore, the heating rail is made of tungsten steel.

[0021] Since the present invention adopts the above technical solution, the present invention has the following advantages:

[0022] (1) By setting a clamping mechanism, the clamping hands on clamp A and clamp B are arranged in four equal parts, which can effectively clamp the power pipeline to prevent the power pipeline from rotating or moving. At the same time, the clamping hands are set longer, which can be applicable to power pipelines of various diameters, which is more diverse. The clamping mechanism and the clamping hands are used separately, which can also be applied to different scenarios;

[0023] (2) By setting up a moving mechanism, the rotation of motor A can not only drive the cutting barrel and the hot melt barrel to move, but also drive the connecting plate to rotate, thereby driving the thermal pipes on both sides to be extruded and connected, reducing manpower requirements and improving work efficiency;

[0024] (3) By setting up a cutting mechanism and a hot-melt mechanism, the cutting and hot-melt functions are integrated into one. First, the cutting mechanism is used to cut and chamfer the inner wall of the power pipeline, and then the power pipeline is hot-melted to connect. This avoids the situation where a piece of the inner wall of the power pipeline protrudes after hot-melting to affect the threading. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0026] Figure 2 It is a structural schematic diagram of the clamping mechanism of the present invention.

[0027] Figure 3-4 It is a structural schematic diagram of the moving mechanism of the present invention.

[0028] Figure 5-7 It is a schematic structural diagram of the cutting mechanism of the present invention.

[0029] Figure 8-9 It is a structural schematic diagram of the hot melt mechanism of the present invention.

[0030] Fig.10 It is a schematic structural diagram of the clamp B of the present invention.

[0031] Figure numbers: 1-clamping mechanism; 2-moving mechanism; 3-cutting mechanism; 4-hot melt mechanism; 101-clip A; 102-clip B; 103-curved plate; 104-connecting block; 105-heating plate; 201-motor A; 202-screw A; 203-moving block; 204-moving slider A; 205-connecting plate A; 206-moving slider B; 207-connecting plate B; 208-baffle A; 209-motor B; 210-support frame; 211-fixed shaft; 212-connecting plate; 2 13-sliding ring; 301-fixed box; 302-slide panel; 303-moving rod; 304-fixed plate; 305-fixed ring; 306-motor C; 307-screw B; 308-slider; 309-control ring; 310-cutting barrel; 311-blade guide; 312-blade; 401-hot melt barrel; 402-heating guide; 403-baffle B; 404-heater; 405-groove; 1011-ring; 1012-upper clamp; 1013-lower clamp; 1014-grip. DETAILED DESCRIPTION

[0032] The technical solution of the present invention is further specifically described below through embodiments and in combination with the accompanying drawings; in the following description, many specific details are set forth in order to fully understand the present invention, but the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited to the specific embodiments disclosed below.

[0033] Examples, such as Figure 1-10 As shown, an MPP power pipe welding device comprises: a clamping mechanism 1, a moving mechanism 2, a cutting mechanism 3 and a hot-melting mechanism 4;

[0034] The MPP power pipe welding device is arranged symmetrically, with a clamping mechanism 1 provided on the front and rear sides respectively, and each clamping mechanism 1 can be removed separately. When the clamping mechanism 1 is removed, a power pipe can be clamped and then fixed to the moving mechanism 2 and the cutting mechanism 3. The moving mechanism 2 is provided in the middle of the two clamping mechanisms 1, and the hot-melt mechanism 4 and a part of the cutting mechanism 3 are rotatably installed on the moving mechanism 2, and the other part of the cutting mechanism 3 is fixed together with the clamping mechanism 1;

[0035] First, remove the two clamping mechanisms 1, put one power pipeline into the clamping mechanism 1 respectively, and then use the clamping mechanism 1 to clamp, and then install the clamping mechanism 1 with the power pipeline on the moving mechanism 2 and the cutting mechanism 3. After the installation is completed, use the cutting mechanism 3 to cut a chamfer on the inner wall of the two power pipelines. After the cutting is completed, the moving mechanism 2 drives the cutting mechanism 3 to leave the power pipeline, and at the same time drives the hot melt mechanism 4 to move to the specified position, and then the hot melt mechanism 4 performs hot melt treatment on the interface of the two power pipelines. After the hot melting is completed, the moving mechanism 2 drives the two power pipelines to contact and connect. After the connection is completed, remove the clamping mechanism 1, reset the moving mechanism 2, the cutting mechanism 3 and the hot melt mechanism 4, and then remove the clamping mechanism 1 from the power pipeline, so that the pipeline connection is completed.

[0036] In an optional implementation manner of the embodiment of the present invention, as Figure 2 and Fig.10 As shown, the clamping mechanism 1 includes: a clamp A 101, a clamp B 102, a curved plate 103, a connecting block 104 and a heating plate 105;

[0037] The clip A101 and the clip B102 are connected together through the curved plate 103, and the curved plate 103 can slide in the slide grooves of the clip A101 and the clip B102. The structures of the clip A101 and the clip B102 are exactly the same, except that the relative positions of the clip A101 and the clip B102 are arranged at 90 degrees. A connecting block 104 is slidably installed in the slide groove of the clip B102, and a heating plate 105 is slidably installed at the front end of the connecting block 104. The heating plate 105 and the connecting block 104 are connected by a spring;

[0038] The clamp A101 includes: a collar 1011, an upper clamping plate 1012, a lower clamping plate 1013 and a clamping hand 1014;

[0039] The upper clamping plate 1012 and the lower clamping plate 1013 are hinged together, and the upper clamping plate 1012 and the lower clamping plate 1013 can be turned over relative to each other. The upper clamping plate 1012 and the lower clamping plate 1013 are fixed together using a collar 1011. A clamping hand 1014 is slidably installed on the upper clamping plate 1012 and the lower clamping plate 1013, and the two clamping hands 1014 are symmetrically arranged.

[0040] Remove the collar 1011 on the clamp A101 and the clamp B102, flip the upper clamp 1012, flip the upper clamp 1012 and the lower clamp 1013, so as to open the clamp A101 and the clamp B102, place the power pipeline in the clamp A101 and the clamp B102, limit the power pipeline with the heating plate 105 installed on the connecting block 104, flip the upper clamp 1012, close the upper clamp 1012 and the lower clamp 1013, put on the collar 1011, and then remove the collar 1012. 11, thereby connecting the upper clamping plate 1012 and the lower clamping plate 1013, and the clamping hand 1014 is closed to the middle of the clamp A101 and the clamp B102 under the action of the spring. At this time, the clamping hand 1014 will clamp the power pipeline, and then rotate the clamp A101 or the clamp B102 to make the clamping hand 1014 of the clamp A101 and the clamp B102 at 90 degrees, and then the power pipeline is clamped tighter by multiple clamping hands 1014, thereby limiting the power pipeline to a specified position.

[0041] In an optional implementation manner of the embodiment of the present invention, as Figure 3-4 As shown, the moving mechanism 2 includes: a motor A201, a screw rod A202, a moving block 203, a moving slider A204, a connecting plate A205, a moving slider B206, a connecting plate B207, a baffle A208, a motor B209, a support frame 210, a fixed shaft 211, a connecting plate 212 and a sliding ring 213;

[0042] The motor shaft of the motor A201 is fixed together with the screw rod A202, and a moving slider A204 and a moving slider B206 are slidably installed on the screw rod A202. The moving slider A204 is fixed together with the connecting plate A205, and the moving slider B206 is fixed together with the connecting plate B207. The gears on the connecting plate A205 and the connecting plate B207 can be meshed with the gears on the motor B209. The motor B209 is fixed on the moving block 203, and a baffle A208 is fixed at the end of the moving block 203. The lower part of the moving block 203 is fixed together with the fixed shaft 211, and two connecting plates 212 are rotatably installed on the fixed shaft 211. The connecting plates 212 are slidably installed in the slide grooves of the support frame 210. There is no contact between the fixed shaft 211 and the support frame 210, and a sliding ring 213 is rotatably installed on each connecting plate 212;

[0043] When the cutting mechanism 3 completes the cutting work, the motor A201 drives the screw rod A202 to rotate, and then drives the moving slider A204 and the moving slider B206 to move. At this time, the motor B209 rotates, cooperates with the moving slider A204 and the moving slider B206 to move, thereby driving the connecting plate A205 and the connecting plate B207 to move, and then moves the hot melt barrel 401 to the cutting barrel 310 position to perform the hot melt operation. When the hot melt is completed, it continues to drive the moving slider A204 and the moving slider B206 to move, and moves the hot melt barrel 401 to the designated position. The hot melt barrel 401 is positioned so that it does not interfere with the pipeline connection. At this time, the movable slider A204 is pressed against the baffle A208, and the screw A202 drives the movable slider A to continue to move, thereby driving the movable block 203 to move. The movement of the movable block 203 drives the fixed shaft 211 to move, and then drives the two connecting plates 212 to close, thereby driving the two clamping mechanisms 1 to close. When closing, the clamps 1 of the two clamping mechanisms 1 will rotate with the sliding ring 213, and then close the two power pipelines, so that the two power pipelines are in contact and squeezed, and then the two power pipelines are connected.

[0044] In an optional implementation manner of the embodiment of the present invention, as Figure 5-7 As shown, the cutting mechanism 3 includes: a fixed box 301, a slide panel 302, a moving rod 303, a fixed plate 304, a fixed ring 305, a motor C306, a screw rod B307, a slider 308, a control ring 309, a cutting barrel 310, a blade guide 311 and a blade 312;

[0045] The top of the fixed box 301 is covered with a slide panel 302, and the moving rod 303 slides in the two slide slots of the slide panel 302. A fixed plate 304 is provided at each end of the moving rod 303. The fixed plate 304 is slidably installed in the slide slot of the moving rod 303 and is connected to the moving rod 303 through a spring. A fixed ring 305 is fixed on each fixed plate 304. The moving rod 303 is fixed together with a slider 308, and the slider 308 is slidably installed on the screw rod B307. The motor shaft of the motor C306 is fixed together with the screw rod B307, and the motor C306 is fixed inside the fixed box 301. The cutting barrel 310 is rotatably installed on the connecting plate A205. The outer ring of the cutting barrel 310 is fixed together with the control ring 309. The control ring 309 is an irregular ring. A blade guide rail 311 is fixed inside the cutting barrel 310, and a blade 312 is fixed on the blade guide rail 311 by bolts.

[0046] Insert the collar 1011 of the clamp B102 in the clamping mechanism 1 of the installed power pipeline into the sliding ring 213, and the motor C306 drives the screw rod B307 to rotate, and then drives the moving rod 303 to move, thereby driving the fixed plate 304 to move. When the fixed plate 304 moves to the specified position, the fixed ring 305 on the fixed plate 304 is sleeved on the collar 1011, and then moves until the fixed ring 305 is completely sleeved on the collar 1011. The fixed plate 304 and the sliding ring 213 fix the clamping mechanism 1 at the specified position, and then fix the power pipeline at the specified position. Move the blade 312 position according to the actual situation. After the movement is completed The blade 312 is fixed on the blade guide rail 311. At this time, the blade 312 contacts the edge of the power pipeline and cuts into a part of the power pipeline. Then the motor B209 drives the gear to rotate, and then drives the cutting barrel 310 to rotate, thereby driving the blade 312 to rotate, so that the blade 312 cuts the inner wall end face of the power pipeline to give the pipeline a chamfer. During the rotation, the cutting barrel 310 drives the control ring 309 to rotate, and the control ring 309 contacts the heating plate 105, thereby pushing the heating plate 105 out, and then the heating plate 105 is out of contact with the power pipeline, so that during the cutting process, the heating plate 105 does not interfere with the operation of the blade 312.

[0047] In an optional implementation manner of the embodiment of the present invention, as Figure 8-9 As shown, the hot melt mechanism 4 includes: a hot melt barrel 401, a heating rail 402, a baffle B403, a heater 404 and a groove 405;

[0048] The hot melt barrel 401 is rotatably mounted on the connecting plate B207. A baffle B403 is fixed to the end of the hot melt barrel 401. A heating rail 402 is fixed to the middle of the hot melt barrel 401. The heating rail 402 is fixed to the heater 404. A groove 405 is provided on the heating rail 402. The groove 405 is not heated.

[0049] The moving mechanism 2 moves the hot melt mechanism 4 to the specified position. During the movement, the heating guide rail 402 installed in the hot melt barrel 401 slides in the groove at the front end of the connecting block 104. After moving to the specified position, the heating guide rail 402 slides into the groove of the baffle at one end of the heating plate 105. At this time, the gear installed on the shaft of the hot melt barrel 401 meshes with the gear on the motor B209, and the heating guide rail 402 heats the heating plate 105. When the temperature of the heating plate 105 reaches a certain level, the motor B209 drives the gear to rotate, and then drives the hot melt barrel 401 to rotate, thereby driving the heating guide rail 402 to rotate, and then driving the heating plate 105 to rotate. The plate 105 and the connecting block 104 rotate, so that the heating plate 105 rotates one circle, and the end face of the power pipeline is hot-melted. After the hot-melt, the moving mechanism 2 drives the hot melt barrel 401 to move, and then the baffle B403 on the hot melt barrel 401 contacts the baffle of the heating plate 105. The movement of the hot melt barrel 401 drives the heating plate 105 to move, thereby moving the heating plate 105 outward from the groove of the connecting block 104, so that the baffle on the end face of the heating plate 105 contacts the connecting block 104, and then the heating plate 105 is out of contact with the power pipeline. When the heating plate 105 contacts the connecting block 104, the hot melt barrel 401 stops moving.

[0050] It should be noted that the directions or positional relationships indicated by terms such as “upper”, “lower”, “front”, “back”, “left” and “right” are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the inventive product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the present invention.

Claims

1. An MPP power pipe welding device, characterized in that: include: A clamping mechanism (1), a moving mechanism (2), a cutting mechanism (3) and a hot-melt mechanism (4); The MPP power pipe welding device is arranged symmetrically, with a clamping mechanism (1) provided on the front and rear sides respectively, and each of the clamping mechanisms (1) can be removed separately. When the clamping mechanism (1) is removed, a power pipe can be clamped and then fixed to the moving mechanism (2) and the cutting mechanism (3). A moving mechanism (2) is provided in the middle of the two clamping mechanisms (1), and a hot melt mechanism (4) and a part of the cutting mechanism (3) are rotatably mounted on the moving mechanism (2), and another part of the cutting mechanism (3) is fixed together with the clamping mechanism (1); The clamping mechanism (1) comprises: a clamp A (101), a clamp B (102), a curved plate (103), a connecting block (104) and a heating plate (105); the clamp A (101) and the clamp B (102) are connected together via the curved plate (103); the curved plate (103) can slide in the slide grooves of the clamp A (101) and the clamp B (102); the structures of the clamp A (101) and the clamp B (102) are completely the same, except that the relative positions of the clamp A (101) and the clamp B (102) are arranged at 90 degrees; a connecting block (104) is slidably mounted in the slide groove of the clamp B (102); a heating plate (105) is slidably mounted at the front end of the connecting block (104); and the heating plate (105) and the connecting block (104) are connected via a spring; The moving mechanism (2) comprises: a motor A (201), a screw rod A (202), a moving block (203), a moving slider A (204), a connecting plate A (205), a moving slider B (206), a connecting plate B (207), a baffle A (208), a motor B (209), a support frame (210), a fixed shaft (211), a connecting plate (212) and a sliding ring (213); the motor shaft of the motor A (201) is fixed to the screw rod A (202), the moving slider A (204) and the moving slider B (206) are slidably mounted on the screw rod A (202), the moving slider A (204) is fixed to the connecting plate A (205), the moving slider B (206) is fixed to the connecting plate The connecting plate A (205) and the connecting plate B (207) are fixed together, the gears on the connecting plate A (205) and the connecting plate B (207) can mesh with the gears on the motor B (209), the motor B (209) is fixed on the moving block (203), a baffle A (208) is fixed at the end of the moving block (203), the lower part of the moving block (203) is fixed to the fixed shaft (211), two connecting plates (212) are rotatably mounted on the fixed shaft (211), the connecting plates (212) are slidably mounted in the slide groove of the support frame (210), the fixed shaft (211) and the support frame (210) are not in contact, and a sliding ring (213) is rotatably mounted on each of the connecting plates (212); The cutting mechanism (3) comprises: a fixed box (301), a slide groove panel (302), a moving rod (303), a fixed plate (304), a fixed ring (305), a motor C (306), a screw rod B (307), a slider (308), a control ring (309), a cutting barrel (310), a blade guide rail (311) and a blade (312); the fixed box (301) is covered with a slide groove panel (302) above, the moving rod (303) slides in two slide grooves of the slide groove panel (302), and a fixed plate (304) is provided at each end of the moving rod (303), and the fixed plate (304) is slidably installed in the slide groove of the moving rod (303) and is connected to the moving rod (303) by a spring, each A fixing ring (305) is fixed on each of the fixing plates (304); the moving rod (303) is fixed to a slider (308); the slider (308) is slidably mounted on a screw rod B (307); a motor shaft of the motor C (306) is fixed to the screw rod B (307); the motor C (306) is fixed inside the fixing box (301); the cutting barrel (310) is rotatably mounted on the connecting plate A (205); an outer ring of the cutting barrel (310) is fixed to a control ring (309); the control ring (309) is an irregular circular ring; a blade guide rail (311) is fixed inside the cutting barrel (310); a blade (312) is fixed to the blade guide rail (311) by bolts.

2. The MPP power pipe welding device according to claim 1 is characterized in that: The clamp A (101) comprises: a collar (1011), an upper clamping plate (1012), a lower clamping plate (1013) and a clamping hand (1014); The upper clamping plate (1012) and the lower clamping plate (1013) are hinged together, and the upper clamping plate (1012) and the lower clamping plate (1013) can be flipped relative to each other. The upper clamping plate (1012) and the lower clamping plate (1013) are fixed together using a ring (1011). A clamping hand (1014) is slidably mounted on each of the upper clamping plate (1012) and the lower clamping plate (1013), and the two clamping hands (1014) are symmetrically arranged.

3. The MPP power pipe welding device according to claim 1 or 2, characterized in that: The hot melt mechanism (4) comprises: a hot melt barrel (401), a heating rail (402), a baffle B (403), a heater (404) and a groove (405); The hot melt barrel (401) is rotatably mounted on a connecting plate B (207); a baffle B (403) is fixed to the end of the hot melt barrel (401); a heating rail (402) is fixed to the middle of the hot melt barrel (401); the heating rail (402) is fixed to a heater (404); a groove (405) is provided on the heating rail (402); and the groove (405) is not heated.

4. The MPP power pipe welding device according to claim 3 is characterized in that: The heating guide rail (402) is made of tungsten steel.

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