Coil pipe machining tool

Abstract

The coil pipe machining tool comprises a rack, a mounting frame is mounted on the rack, a machining part comprises a conical groove for reducing the wall of a pipeline and a circular groove for rounding the wall-thickness-reduced pipeline, and the circular groove communicates with the conical groove; a clamping part for clamping a pipeline is arranged on the mounting frame, and the clamping part can horizontally move along with the pipeline; and a control structure is arranged on the mounting frame, and when the control structure is triggered, the clamping part loosens clamping of the pipeline and moves to the original horizontal position, and then the pipeline is clamped again. High-quality cold-drawing machining of the pipeline is achieved, the problems existing in an existing cold-drawing technology are effectively solved, the surface quality of the coil pipe and the uniformity of the internal structure performance are improved, meanwhile, a structure capable of intermittently clamping the pipeline is utilized, it can be ensured that the pipeline cannot rotate, and therefore the machining quality is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of coil processing, in particular to a coil processing tool. Background Art

[0002] Cold drawing plays a pivotal role in coil processing. Its core principle is to apply precise tension to the tube using specialized equipment, causing it to undergo controlled plastic deformation within the constraints of a custom mold. This process, like a skilled sculptor meticulously shaping the tube, allows for precise shaping of key dimensional parameters such as the coil's outer diameter, inner diameter, and wall thickness. Dimensional accuracy can reach ±0.05mm or even higher, making it a model of modern industrial precision manufacturing.

[0003] The high-precision coils act like precision gears in the equipment's operation, seamlessly cooperating with other components during installation and operation. This precise fit significantly reduces leakage caused by dimensional deviations, adding a solid barrier to the equipment's sealing system, effectively preventing media leakage and ensuring a stable internal environment. They also significantly reduce vibration during operation, acting like an efficient shock absorber for a high-speed machine, ensuring smoother, more stable operation. This significantly improves the equipment's operational stability and reliability, extends its service life, and reduces maintenance costs.

[0004] However, the current cold drawing process still faces many problems that need to be solved in practical applications, which makes it difficult to achieve the ideal cold drawing effect.

[0005] For example, in existing cold drawing processes where there are many surface quality defects, the friction between the mold and the tube surface is a key factor affecting surface quality. Because the mold is fixed, the friction between the tube and the inner wall of the mold is large and unevenly distributed when passing through it. This friction is like sandpaper repeatedly polishing the surface of the tube, which not only causes defects such as scratches and abrasions on the tube surface, but also increases the surface roughness. The rough surface easily absorbs impurities and pollutants in the medium, forming a scale layer. The scale layer not only reduces the heat exchange efficiency of the coil, like putting a thick layer of cotton on the heat exchanger, hindering heat transfer; it also accelerates the corrosion of the tube and shortens the service life of the coil. In some chemical and refrigeration equipment with high requirements for heat exchange efficiency, coils with poor surface quality will seriously affect the performance and production efficiency of the equipment.

[0006] Uneven internal microstructure and properties The plastic deformation during the cold drawing process will cause significant changes in the internal structure of the pipe, such as grain refinement and increased dislocation density. These changes have an important impact on the mechanical properties of the coil. However, due to the uneven stress distribution of the existing cold drawing process, the deformation degree of each part inside the pipe is different, which in turn makes the internal microstructure and properties uneven. For example, in some areas, due to excessive deformation, defects such as excessive grain refinement and even cracks may occur; while in other areas, the deformation degree is insufficient, the grain refinement effect is not obvious, and the mechanical properties cannot be effectively improved. This unevenness in internal microstructure and properties causes differences in the load-bearing capacity of the coil at different parts. During the operation of the equipment, local stress concentration is prone to occur, leading to premature failure of the coil and increasing safety risks of the equipment.

[0007] To this end, the present application proposes a coil processing tool. Summary of the Invention

[0008] The purpose of the present invention is to solve the above technical problems and to propose a coil processing tool.

[0009] In order to achieve the above object, the present invention adopts the following technical solutions: A coil processing tool comprises a frame, a mounting frame mounted on the frame, a rotatable extrusion sleeve mounted within the mounting frame, a processing portion within the extrusion sleeve capable of reducing the wall thickness of the pipe and rounding it, the processing portion comprising a tapered groove for reducing the wall thickness of the pipe and a circular groove for reducing the wall thickness of the pipe and rounding it, the circular groove being in communication with the tapered groove; The mounting frame is provided with a clamping portion for clamping the pipe, and the clamping portion can move horizontally with the pipe; the mounting frame is provided with a control structure, and when the control structure is triggered, the clamping portion releases the clamping of the pipe and moves to the horizontal original position, and then clamps the pipe again.

[0010] Preferably, a horizontally arranged mounting plate is fixed on the mounting frame, a driving structure is installed on the mounting plate, a driving shaft is fixed on the output end of the driving structure, a first gear is fixed on the driving shaft, a support plate is fixed on the bottom of the mounting plate, the extrusion sleeve passes through the support plate and is rotatably connected to it, a second gear is fixed on the support plate, and the first gear is meshed with the second gear.

[0011] Preferably, the clamping part includes a movable plate that can move on the frame, a sleeve is fixed on the movable plate, three first piston cylinders are installed on the sleeve, a first movable piston is slidably connected in the first piston cylinder, a first spring is fixed to the upper end of the first movable piston, the upper end of the first spring is fixedly connected to the inner top of the first piston cylinder, the other end of the first movable piston is fixedly connected to an extrusion rod, a pressure plate is fixed on the extrusion rod, and the three first piston cylinders are connected in series through a connecting pipe.

[0012] Preferably, the control structure includes a fixed block fixed on the mounting plate, a guide tube fixed on the fixed block, a sliding block slidably connected in the guide tube, a connecting rod fixed on the sliding block, the connecting rod is fixedly connected to the movable plate, a second spring fixed on the sliding block, a pressure sensor fixed on the fixed block, and the second spring fixed on the pressure sensor.

[0013] Preferably, a support block is fixed on the mounting plate, and the drive shaft passes through the support block and is rotatably connected thereto.

[0014] Preferably, a circular plate is fixed on the driving shaft, a second piston cylinder is installed on the mounting frame, a connecting rod is eccentrically hinged on the circular plate, a second movable piston is slidably connected in the second piston cylinder, the second movable piston is hingedly connected to the connecting rod, and a liquid inlet pipe and a liquid outlet pipe are connected to the second piston cylinder, the liquid inlet pipe and the liquid outlet pipe are both arranged through the mounting frame, the liquid outlet pipe is arranged toward the processing part, and a liquid outlet one-way valve is installed on the liquid outlet pipe, and a liquid inlet one-way valve is installed on the liquid inlet pipe.

[0015] Preferably, the liquid inlet pipe and the liquid outlet pipe are respectively connected to the first liquid delivery pipe and the second liquid delivery pipe, the first liquid delivery pipe and the second liquid delivery pipe are connected to the delivery pipe, one of the first piston cylinders is equipped with a connecting cylinder, the delivery pipe is connected to the connecting cylinder, the first liquid delivery pipe and the liquid inlet pipe are both equipped with a first solenoid valve, the liquid outlet pipe and the second liquid delivery pipe are both equipped with a second solenoid valve, and the pressure sensor is connected to the first solenoid valve and the second solenoid valve through a controller.

[0016] Preferably, the frame is provided with a movable plate, the movable plate is provided with a support rod coaxial with the guide tube, and the support rod is fixed with a support plate for pressing against the pipeline.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. After the pipe is clamped, the present invention uses a specific solenoid valve setting to spray lubricating oil through the outlet pipe to the processing unit, lubricating the pipe and extrusion sleeve being processed. This lubrication method greatly reduces friction between the pipe and the extrusion sleeve, avoiding surface damage caused by friction in traditional processes, thereby effectively reducing the occurrence of surface quality defects.

[0018] 2. Cold drawing processes can cause uneven stress distribution, leading to different degrees of deformation in different parts of the pipe, resulting in uneven internal microstructure and properties. For example, some areas experience excessive grain refinement or even cracking, while others experience insufficient deformation and insignificant grain refinement. The present invention utilizes a rational clamping and processing method. During pipe processing, the clamped portion is positioned close to the extrusion sleeve, effectively restricting the pipe. This allows the pipe to be subjected to more uniform stress when entering the extrusion sleeve for wall reduction and rounding, reducing the problem of uneven deformation caused by localized stress concentration.

[0019] 3. Due to the uniform stress distribution, the deformation degree of each part of the pipe tends to be consistent, making the internal structure and performance more uniform. This avoids the situation where the load bearing capacity of different parts of the coil varies, reduces the risk of premature failure of the coil due to local stress concentration during equipment operation, enhances equipment safety, and extends the service life of the coil.

[0020] 4. The present invention uses a driving structure to drive the circular plate, connecting rod and other components to achieve reciprocating motion of the second piston cylinder, thereby precisely controlling the flow of lubricating oil and driving the first movable piston to drive the extrusion rod and pressure plate to clamp and release the pipeline. When the pipeline moves to a certain position and the pressure sensor detects the set pressure value, the controller can promptly control the solenoid valve to accurately reset and re-clamp the pressure plate. This precise control method ensures stable clamping of the pipeline during processing, avoids pipeline shaking or deformation caused by unstable clamping, and ensures the stability of processing quality.

[0021] 5. During the pipe processing process, the pressure sensor and controller work together to automatically release and re-clamp the pressure plate, allowing the pipe to continuously and stably enter the extrusion sleeve for processing. This continuous processing method improves production efficiency. At the same time, because each clamping can ensure the accuracy of the pipe position, it further ensures the stability and consistency of the coil processing quality.

[0022] In summary, the present invention realizes high-quality cold drawing processing of pipes, effectively solves the problems existing in the existing cold drawing process, improves the surface quality of the coil and the uniformity of the internal structure and performance, and at the same time utilizes a structure that can intermittently clamp the pipe to ensure that the pipe does not rotate, thereby ensuring the quality of processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic structural diagram of a coil processing tooling proposed by the present invention; Figure 2 This is a schematic structural diagram of a mounting frame in a coil processing tooling proposed by the present invention; Figure 3 This is a schematic diagram of a driving structure in a mounting frame in a coil processing tooling proposed by the present invention; Figure 4 This is a cross-sectional view of a mounting frame in a coil processing tooling proposed by the present invention; Figure 5 This is a front view of a coil processing tool proposed by the present invention; Figure 6 This is a structural schematic diagram of the liquid outlet pipe in a coil processing tooling proposed by the present invention; Figure 7 This is a structural schematic diagram of the casing in a coil processing tool proposed by the present invention; Figure 8 This is a schematic structural diagram of a pressure plate in a coil processing tooling proposed by the present invention; Figure 9 This is a schematic structural diagram of a first piston cylinder in a coil processing tooling proposed by the present invention; Figure 10 This is a schematic structural diagram of an extrusion sleeve in a coil processing tooling proposed by the present invention.

[0024] In the figure: 1 frame, 2 movable plate, 3 support rod, 4 support plate, 5 mounting frame, 6 movable plate, 7 mounting plate, 8 guide tube, 9 connecting rod, 10 support plate, 11 extrusion sleeve, 12 second gear, 13 baffle, 14 driving structure, 15 first gear, 16 driving shaft, 17 support block, 18 circular plate, 19 second piston cylinder, 20 second movable piston, 21 connecting rod, 22 processing part, 23 delivery pipe, 24 liquid outlet pipe, 25 liquid inlet pipe, 26 liquid inlet check valve, 27 liquid outlet check valve, 28 first liquid delivery pipe, 29 second liquid delivery pipe, 30 first solenoid valve, 31 second solenoid valve, 32 fixed block, 33 pressure sensor, 34 second spring, 35 sliding block, 36 first piston cylinder, 37 connecting pipe, 38 connecting cylinder, 39 sleeve, 40 pressure plate, 41 first movable piston, 42 first spring, 43 extrusion rod. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0026] Reference Figures 1-10A coil processing tool includes a frame 1, a mounting frame 5 is installed on the frame 1, baffles 13 are fixed on both sides of the mounting frame 5, and an oil storage cavity is formed between the baffle 13 and the mounting frame 5 for storing lubricating oil.

[0027] A rotatable extrusion sleeve 11 is installed in the mounting frame 5, a horizontally arranged mounting plate 7 is fixed on the mounting frame 5, a driving structure 14 is installed on the mounting plate 7, the driving structure 14 is composed of a reduction box and a reduction motor, a driving shaft 16 is fixed to the output end of the driving structure 14, a support block 17 is fixed on the mounting plate 7, the driving shaft 16 passes through the support block 17 and is rotatably connected to it.

[0028] A first gear 15 is fixed on the drive shaft 16, a support plate 10 is fixed to the bottom of the mounting plate 7, an extrusion sleeve 11 passes through the support plate 10 and is rotatably connected thereto, a second gear 12 is fixed on the support plate 10, and the first gear 15 is meshed with the second gear 12, so that when the first gear 15 rotates, it can drive the second gear 12 to rotate.

[0029] A processing portion 22 is provided in the extrusion sleeve 11, which can reduce the wall thickness of the pipe and round it. The processing portion 22 includes a tapered groove for reducing the wall thickness of the pipe and a circular groove for reducing the wall thickness of the pipe and rounding it. The circular groove is connected to the tapered groove. The mounting frame 5 is provided with a clamping part for clamping the pipe, and the clamping part can move horizontally with the pipe; the clamping part includes a movable plate 6 that can move on the frame 1, and a sleeve 39 is fixed on the movable plate 6, and three first piston cylinders 36 are installed on the sleeve 39, and a first movable piston 41 is slidably connected in the first piston cylinder 36, and a first spring 42 is fixed to the upper end of the first movable piston 41, and the upper end of the first spring 42 is fixedly connected to the inner top of the first piston cylinder 36, and the other end of the first movable piston 41 is fixedly connected to an extrusion rod 43, and a pressure plate 40 is fixed on the extrusion rod 43. The three first piston cylinders 36 are connected in series through a connecting pipe 37.

[0030] A control structure is provided on the mounting frame 5, which includes a fixed block 32 fixed on the mounting plate 7, a guide tube 8 fixed on the fixed block 32, a sliding block 35 slidably connected in the guide tube 8, a connecting rod 9 fixed on the sliding block 35, the connecting rod 9 is fixedly connected to the movable plate 6, a second spring 34 is fixed on the sliding block 35, a pressure sensor 33 is fixed on the fixed block 32, and the second spring 34 is fixed on the pressure sensor 33.

[0031] When the control structure is triggered, the clamping portion releases the clamping of the pipe and moves to a horizontal original position, and then clamps the pipe again.

[0032] Among them, a circular plate 18 is fixed on the drive shaft 16, a second piston cylinder 19 is installed on the mounting frame 5, a connecting rod 21 is eccentrically hinged on the circular plate 18, a second movable piston 20 is slidably connected in the second piston cylinder 19, the second movable piston 20 is hingedly connected to the connecting rod 21, and a liquid inlet pipe 25 and a liquid outlet pipe 24 are connected to the second piston cylinder 19. The liquid inlet pipe 25 and the liquid outlet pipe 24 are both arranged through the mounting frame 5, the liquid outlet pipe 24 is arranged toward the processing part 22, and a liquid outlet one-way valve 27 is installed on the liquid outlet pipe 24, which only allows lubricating oil to flow through the second piston cylinder 19 to the liquid outlet pipe 24; a liquid inlet one-way valve 26 is installed on the liquid inlet pipe 25, which only allows lubricating oil to enter the second piston cylinder 19 through the liquid inlet pipe 25.

[0033] The liquid inlet pipe 25 and the liquid outlet pipe 24 are respectively connected to the first liquid delivery pipe 28 and the second liquid delivery pipe 29, and the first liquid delivery pipe 28 and the second liquid delivery pipe 29 are connected to the delivery pipe 23. A connecting cylinder 38 is installed on one of the first piston cylinders 36, and the delivery pipe 23 is connected to the connecting cylinder 38. The first liquid delivery pipe 28 and the liquid inlet pipe 25 are both installed with a first solenoid valve 30, and the liquid outlet pipe 24 and the second liquid delivery pipe 29 are both installed with a second solenoid valve 31. The pressure sensor 33 is connected to the first solenoid valve 30 and the second solenoid valve 31 through a controller.

[0034] In addition, the frame 1 is provided with a movable plate 2, the movable plate 2 is provided with a support rod 3 coaxial with the guide tube 8, and the support rod 3 is fixed with a support plate 4 that presses against the pipeline; the movable plate 2 can be moved by hydraulic drive or chain drive, and it slides on the frame 1 through the guide rail.

[0035] The principle of coil processing of the present invention is as follows: Place one end of the pipe to be processed on the support rod 3 on the movable plate 2 and it will be coaxially supported by the support rod 3, so that the pipe and the support plate 4 are tightly pressed together to ensure the stable position of the pipe at the beginning of the processing. Then the movable plate 2 drives the support rod 3 to move the pipe so that it is located in the sleeve 39, and then the pipe is clamped; Specifically: Start the drive structure 14, which is composed of a reduction gearbox and a reduction motor, and start to run. The output end of the drive structure 14 drives the drive shaft 16 to rotate. The drive shaft 16 passes through the support block 17 and is rotatably connected thereto, thereby ensuring the stability of the rotation of the drive shaft 16.

[0036] When drive shaft 16 rotates, it also drives circular plate 18 fixed to it. A connecting rod 21 is eccentrically hingedly connected to circular plate 18. The other end of connecting rod 21 is hingedly connected to second piston cylinder 19, which is slidably connected within the second piston cylinder 19. The rotation of circular plate 18 drives reciprocating motion within the second piston cylinder 19 via connecting rod 21.

[0037] Among them, the first solenoid valve 30 on the liquid inlet pipe 25 is in an open state, the first solenoid valve 30 on the first liquid delivery pipe 28 is in a closed state, the second solenoid valve 31 on the liquid outlet pipe 24 is in a closed state, and the second solenoid valve 31 on the second liquid delivery pipe 29 is in an open state.

[0038] When the second piston cylinder 19 moves in the direction away from the liquid inlet pipe 25, negative pressure is formed in the second piston cylinder 19, the liquid inlet one-way valve 26 opens, and the lubricating oil enters the second piston cylinder 19 through the liquid inlet pipe 25; when the second piston cylinder 19 moves in the direction close to the liquid outlet pipe 24, the pressure in the second piston cylinder 19 increases, the liquid outlet one-way valve 27 opens, and the lubricating oil flows into the delivery pipe 23 through the liquid outlet pipe 24 and the second liquid delivery pipe 29, and then flows into the connecting cylinder 38 through the delivery pipe 23, and flows into the first piston cylinder 36 through the connecting cylinder 38. Under the action of the connecting pipe 37, lubricating oil flows in the three first piston cylinders 36, and the hydraulic oil in the first piston cylinder 36 increases, thereby driving the first movable piston 41 to move. The movement of the first movable piston 41 drives the extrusion rod 43 and the pressure plate 40 to move. Finally, the three pressure plates 40 are against the pipeline, clamping the pipeline, thereby ensuring that the pipeline will not be rotated by the rotation of the extrusion sleeve 11.

[0039] After the pipe is clamped, the first solenoid valve 30 on the liquid inlet pipe 25 is in an open state, the first solenoid valve 30 on the first liquid delivery pipe 28 is in a closed state, the second solenoid valve 31 on the liquid outlet pipe 24 is in an open state, and the second solenoid valve 31 on the second liquid delivery pipe 29 is in a closed state.

[0040] As mentioned above, the lubricating oil is sprayed toward the processing portion 22 through the liquid outlet pipe 24 to lubricate the pipe being processed and the extrusion sleeve 11, thereby reducing friction, reducing the occurrence of surface quality defects, and improving processing quality.

[0041] At this time, the movable plate 6 is in the initial position, the sliding block 35 is also in the corresponding position in the guide tube 8, the second spring 34 is in the natural state, and the pressure sensor 33 detects the initial pressure value.

[0042] The first gear 15 on the drive shaft 16 rotates accordingly. Since the first gear 15 meshes with the second gear 12 fixed to the support plate 10, the rotation of the first gear 15 drives the second gear 12 to rotate, thereby causing the extrusion sleeve 11 fixedly connected to the second gear 12 to rotate on the support plate 10. The extrusion sleeve 11 is provided with a processing portion 22, including a tapered groove for reducing the wall thickness of the pipe and a circular groove for reducing the wall thickness of the pipe to round it out. The circular groove and the tapered groove are connected to prepare for subsequent processing of the pipe.

[0043] As the extrusion sleeve 11 rotates, an external traction device pulls the pipe horizontally, gradually allowing it to enter the rotating extrusion sleeve 11. The pipe first enters the tapered groove, where its wall thickness is gradually reduced, achieving wall thickness reduction. As the pipe continues to move, it enters the circular groove, which rounds the reduced-wall pipe to the required outer diameter and roundness, completing the pipe elbow wall thickness reduction process.

[0044] As the pipeline moves, the movable plate 6 drives the connecting rod 9 and the sliding block 35 to slide within the guide tube 8, compressing the second spring 34 and detecting the pressure change with the pressure sensor 33. When the pipeline moves to a certain position, causing the pressure detected by the pressure sensor 33 to reach the set value, the pressure sensor 33 transmits a signal to the controller, which controls the operation of the first solenoid valve 30 and the second solenoid valve 31.

[0045] Specifically, the first solenoid valve 30 on the liquid inlet pipe 25 is in a closed state, the first solenoid valve 30 on the first liquid delivery pipe 28 is in an open state, the second solenoid valve 31 on the liquid outlet pipe 24 is in an open state, and the second solenoid valve 31 on the second liquid delivery pipe 29 is in a closed state; This allows the lubricating oil within the multiple first piston cylinders 36 to be sucked away, allowing the pressure plate 40 to reset and move, driving the extrusion rod 43 and the pressure plate 40 to loosen their grip on the pipe. Simultaneously, under the elastic force of the second spring 34, the sliding block 35 drives the connecting rod 9 and the movable plate 6 to their horizontal, original positions. Subsequently, the controller controls the first and second solenoid valves 30 and 31 to return to their initial states, and the first movable piston 41 resets under the action of the first spring 42. As described above, the pressure plate 40 again clamps the pipe, and subsequent processing continues. Since the clamped portion of the pipe is close to the extrusion sleeve 11, this effectively restricts the pipe, preventing deformation due to torsion and ensuring the quality of the coil processing.

[0046] Through the coordinated work of the above components, this coil processing tooling realizes high-quality cold drawing of the pipe, effectively solves the problems existing in the existing cold drawing process, and improves the surface quality of the coil and the uniformity of the internal structure and performance.

[0047] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A coil processing tool, comprising a frame (1), characterized in that: A mounting frame (5) is mounted on the frame (1), a rotatable extrusion sleeve (11) is mounted in the mounting frame (5), a processing portion (22) capable of reducing the wall thickness of the pipe and rounding the pipe is provided in the extrusion sleeve (11), the processing portion (22) comprising a tapered groove for reducing the wall thickness of the pipe and a circular groove for reducing the wall thickness of the pipe and rounding the pipe, the circular groove being in communication with the tapered groove; The mounting frame (5) is provided with a clamping portion for clamping the pipeline, and the clamping portion can move horizontally following the pipeline; the mounting frame (5) is provided with a control structure, and when the control structure is triggered, the clamping portion releases the clamping of the pipeline and moves to the horizontal original position, and then clamps the pipeline again.

2. A coil processing tool according to claim 1, characterized in that: A horizontally arranged mounting plate (7) is fixed on the mounting frame (5), a driving structure (14) is installed on the mounting plate (7), a driving shaft (16) is fixed to the output end of the driving structure (14), a first gear (15) is fixed to the driving shaft (16), a support plate (10) is fixed to the bottom of the mounting plate (7), the extrusion sleeve (11) passes through the support plate (10) and is rotatably connected thereto, a second gear (12) is fixed on the support plate (10), and the first gear (15) is meshed with the second gear (12).

3. The coil processing tool according to claim 2, characterized in that: The clamping portion includes a movable plate (6) capable of moving on the frame (1), a sleeve (39) is fixed on the movable plate (6), three first piston cylinders (36) are installed on the sleeve (39), a first movable piston (41) is slidably connected in the first piston cylinder (36), a first spring (42) is fixed to the upper end of the first movable piston (41), the upper end of the first spring (42) is fixedly connected to the inner top of the first piston cylinder (36), the other end of the first movable piston (41) is fixedly connected to an extrusion rod (43), a pressure plate (40) is fixed on the extrusion rod (43), and the three first piston cylinders (36) are connected in series via a connecting pipe (37).

4. The coil processing tool according to claim 3, characterized in that: The control structure comprises a fixed block (32) fixed on the mounting plate (7), a guide tube (8) fixed on the fixed block (32), a sliding block (35) slidably connected in the guide tube (8), a connecting rod (9) fixed on the sliding block (35), the connecting rod (9) fixedly connected to the movable plate (6), a second spring (34) fixed on the sliding block (35), a pressure sensor (33) fixed on the fixed block (32), and the second spring (34) fixed on the pressure sensor (33).

5. The coil processing tool according to claim 4, characterized in that: A support block (17) is fixed on the mounting plate (7), and the drive shaft (16) passes through the support block (17) and is rotatably connected thereto.

6. The coil processing tool according to claim 4, characterized in that: A circular plate (18) is fixed on the driving shaft (16), a second piston cylinder (19) is installed on the mounting frame (5), a connecting rod (21) is eccentrically hingedly connected to the circular plate (18), a second movable piston (20) is slidably connected in the second piston cylinder (19), the second movable piston (20) is hingedly connected to the connecting rod (21), and a liquid inlet pipe (25) and a liquid outlet pipe (24) are connected to the second piston cylinder (19), the liquid inlet pipe (25) and the liquid outlet pipe (24) are both arranged through the mounting frame (5), the liquid outlet pipe (24) is arranged toward the processing portion (22), and a liquid outlet one-way valve (27) is installed on the liquid outlet pipe (24), and a liquid inlet one-way valve (26) is installed on the liquid inlet pipe (25).

7. The coil processing tool according to claim 6, characterized in that: The liquid inlet pipe (25) and the liquid outlet pipe (24) are respectively connected to a first liquid delivery pipe (28) and a second liquid delivery pipe (29); the first liquid delivery pipe (28) and the second liquid delivery pipe (29) are connected to a delivery pipe (23); a connecting pipe (38) is installed on one of the first piston cylinders (36); the delivery pipe (23) is connected to the connecting pipe (38); a first solenoid valve (30) is installed on the first liquid delivery pipe (28) and the liquid inlet pipe (25); a second solenoid valve (31) is installed on the liquid outlet pipe (24) and the second liquid delivery pipe (29); and the pressure sensor (33) is connected to the first solenoid valve (30) and the second solenoid valve (31) through a controller.

8. The coil processing tool according to claim 1, characterized in that: A movable plate (2) is provided on the frame (1), a support rod (3) coaxial with the guide tube (8) is provided on the movable plate (2), and a support plate (4) for pressing against the pipeline is fixed on the support rod (3).

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