A metal pipe cutting device

Abstract

This invention discloses a metal pipe cutting processing device, relating to the field of metal pipe processing. It includes a processing table, a cylindrical protective box, a motion component, and a cutting component. Frame plates are bolted to both sides of the outer wall of the protective box, and the bottom ends of the frame plates are bolted to the upper surface of the processing table. A through hole for the metal pipe to pass through is formed at the center of the outer wall of the protective box facing the positioning structure. A movable slot dividing the box into two parts is formed on the circumferential outer wall of the protective box. A ring plate is movably fitted onto the outside of the protective box at the movable slot. The motion component is set on the processing table and located on one side of the ring plate. The motion component drives the ring plate to move circumferentially around the metal pipe along the wall of the protective box. The cutting component is detachably mounted on the ring plate. This invention can prevent debris leakage, avoid polluting the processing workshop environment, reduce manual cleaning workload, and prevent debris from adhering to the sliding guide rails and transmission components, ensuring long-term stable processing accuracy of the device.

Description

Technical Field

[0001] This invention relates to the technical field of metal pipe processing, specifically to a metal pipe cutting processing device. Background Technology

[0002] As an indispensable key structural component in industrial production, the quality and efficiency of metal pipe fittings in machining not only directly affect the dimensional accuracy and surface quality of the fittings themselves, but also profoundly influence the overall assembly accuracy, connection reliability, and cycle control of subsequent products (such as various mechanical equipment and pipeline systems).

[0003] A metal pipe cutting device described in the prior art includes a base, a fixed tool post, a rotating tool post, a cutting component, and a detection component. The fixed tool post is provided with an annular slide rail with an opening. The rotating tool post is slidably engaged with the slide rail by a slider and can rotate around the pipe. The cutting component is mounted on the rotating tool post by a sliding bracket. Its feed is controlled by a lead screw driven by a motor. The detection component uses spring clamping and a limit switch to detect the cutting depth in real time.

[0004] While the aforementioned technology can automatically perform layered cutting of thick-walled pipes according to a set thickness, improving cutting efficiency and processing accuracy, and effectively reducing cutting resistance, the debris generated during the cutting process flies everywhere, which not only seriously pollutes the overall environment of the processing workshop and increases the tedious workload of manual cleaning, but also causes some debris to adhere to the surface of key moving parts such as the sliding guide rails and transmission screws of the device, accelerating abnormal wear of the parts and reducing the processing accuracy and service life of the device. Summary of the Invention

[0005] Based on this, the purpose of the present invention is to provide a metal pipe cutting and processing device to solve the technical problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A metal pipe cutting processing device includes a processing table, a cylindrical protective box, a motion component, and a cutting component. The protective box has mounting plates bolted to both sides of its outer wall. The bottom of each mounting plate is bolted to the upper surface of the processing table. Positioning structures for metal pipes are provided on both sides of the processing table, facing the positioning structures. A through hole for the metal pipe to pass through is formed at the center of the outer wall of the protective box facing the positioning structures. A movable groove dividing the box into two parts is formed on the outer circumference of the protective box. A ring plate is movably fitted onto the outer side of the protective box at the movable groove. Sliding grooves are formed on both sides of the inner wall of the ring plate. Matching slide rails are fixed to the circumference of the protective box at the sliding grooves. The motion component is mounted on the machining table and located on one side of the ring plate. The motion component is used to drive the ring plate to make a circular motion around the metal pipe along the protective box wall. The cutting component is detachably mounted on the ring plate. The surface of the ring plate has a through hole. The cutting component passes through the through hole and the moving through slot to follow the ring plate to rotate around the metal pipe and to perform full circumferential cutting on the metal pipe.

[0007] Specifically, in this technical solution, the motion component includes a gear ring, which is fixedly sleeved on the outer side wall of the ring plate. A support plate is bolted to the upper surface of the processing table on one side of the frame plate. A drive motor is bolted to the top outer wall of the support plate. The output end of the drive motor passes through the support plate and a drive gear is fixedly sleeved on its outer wall. The tooth surface of the drive gear meshes with the tooth surface of the gear ring.

[0008] Specifically, the cutting assembly includes a mounting plate covering the through hole. The mounting plate is fixed to the ring plate by bolts. An electric telescopic cylinder is installed on the top of the mounting plate by bolts. The telescopic end of the electric telescopic cylinder passes through the mounting plate and through the movable through slot. A protective shell is installed by bolts. A cutting wheel is provided below the protective shell. Side plates are fixed on both sides of the bottom end of the protective shell. The two wheel centers of the cutting wheel are rotatably connected to the corresponding side plates through fixed shafts.

[0009] Specifically, in this technical solution, an arc-shaped baffle is fixed between the two side plates above the cutting wheel, a cover plate is fixed to the outer wall of one of the side plates, a stepper motor is installed inside the protective shell by bolts, the end of one of the shafts and the output end of the stepper motor are rotatably connected to the inner wall of the cover plate, and a sprocket is fixedly sleeved on the output end of the stepper motor and the outer wall of the shaft, and the two sprockets are connected by chain drive.

[0010] Specifically, in this technical solution, the top two sides of the protective shell are bonded with abutment pads, and the outer wall of the other side plate is embedded with a displacement sensor.

[0011] Specifically, in this technical solution, the inner ring wall of the ring plate is symmetrically fixed with connecting blocks. Both connecting blocks pass through the movable through groove and their outer walls slide in contact with the groove wall. The ends of the two connecting blocks away from the ring plate are fixed with annular inner lining plates, and the outer ring wall of the inner lining plate slides in contact with the inner wall of the protective box.

[0012] Specifically, in this technical solution, the inner liner plate has an opening at the through hole for the cutting component to pass through, and the outer walls on both sides of the inner liner plate slide in contact with the inner wall of the protective box.

[0013] Specifically, in this technical solution, the walls of both perforations are bonded with annular sealing gaskets. A suction pipe is connected to the bottom of one side of the protective box. A suction pump is connected to the end of the suction pipe. The suction pump is bolted to the top of the collection box. The output pipe of the suction pump extends through the top wall of the collection box into the interior. The bottom of the collection box is bolted to the upper surface of the processing table.

[0014] Specifically, the positioning structure of this technical solution includes a U-shaped frame, with vertical plates symmetrically fixed at the bottom of the U-shaped frame. The bottom ends of both vertical plates are bolted to the upper surface of the processing table. Inside the U-shaped frame, arc-shaped positioning clamps are provided above and below the metal pipe. Hydraulic cylinders are bolted to the center of the top and bottom of the U-shaped frame. The telescopic ends of both hydraulic cylinders penetrate the frame wall and are bolted to the corresponding positioning clamps.

[0015] Specifically, in this technical solution, a through-hole conductive slip ring is bolted to the side of the protective box away from the moving component. The through-hole conductive slip ring and the through hole are on the same axis, and the rotating end of the through-hole conductive slip ring is electrically connected to the cutting component.

[0016] In summary, the present invention has the following advantages: by fully enclosing the cutting area with a protective box, and sealing the gap with a sealing gasket at the perforation, it prevents the leakage of debris, avoids pollution of the processing workshop environment, and reduces the amount of manual cleaning work. At the same time, the inner lining plate inside the protective box can prevent debris from entering the gaps between the ring plate and the sliding rails, grooves and other moving parts of the protective box. Combined with the negative pressure suction of the suction pipe and the suction pump, the cutting debris is collected in the collection box, preventing debris from adhering to the surface of the sliding guide rail and transmission components, preventing abnormal wear of components, ensuring the long-term stable processing accuracy of the device, and extending the service life of the whole machine. By driving the drive motor to rotate the drive gear, and using the meshing transmission between the gear and the gear ring, the ring plate can be stably driven to make circumferential motion along the slide rail, thereby driving the cutting component to perform full circumferential cutting around the metal pipe. With the help of the electric telescopic cylinder to precisely control the feed depth of the cutting wheel, and the cutting position to be detected in real time by the displacement sensor, not only is the safety of the cutting operation improved, but the accuracy of the cutting dimensions is also improved, the rework rate of pipe cutting is reduced, and the overall processing efficiency is indirectly improved. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the orthogonal isometric structure of the device of the present invention; Figure 2 This is a schematic diagram of the oblique axonometric structure of the device of the present invention; Figure 3 This is a schematic diagram of the disassembled structure of the protective box and the ring plate of the present invention; Figure 4 This is a schematic diagram of the oblique axonometric structure inside the protective box of the present invention; Figure 5 This is a schematic diagram of the internal structure of the protective box of the present invention; Figure 6 This is a schematic diagram of the orthogonal isometric structure of the cutting assembly of the present invention; Figure 7 This is a front structural view of the cutting assembly of the present invention.

[0018] Attached Figure Descriptions: 1. Machining table; 101. Vertical plate; 102. Rectangular frame; 103. Positioning clamp; 104. Hydraulic cylinder; 105. Collection box; 1051. Suction pump; 2. Protective box; 201. Moving channel; 202. Perforation; 2021. Sealing gasket; 203. Shelf plate; 204. Suction pipe; 205. Slide rail; 3. Motion components; 301. Gear ring; 302. Drive gear; 303. Support plate; 304. Drive motor; 4. Cutting... Components; 401, Mounting plate; 402, Electric telescopic cylinder; 403, Protective shell; 4031, Stepper motor; 4032, Abutment pad; 404, Side plate; 4041, Baffle; 405, Cutting wheel; 4051, Shaft; 406, Displacement sensor; 407, Cover plate; 4071, Sprocket; 4072, Chain; 5, Through-hole conductive slip ring; 6, Ring plate; 601, Slide groove; 602, Through hole; 603, Connecting block; 604, Inner liner plate. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0020] The embodiments of the present invention will now be described.

[0021] It should be noted that all electrical components in the device are controlled by an external control system. Operators can preset cutting parameters, start and stop various functional components through the external control system, and coordinate a series of processing actions such as feeding, rotary cutting and chip collection to ensure that the entire cutting operation process runs stably according to the set requirements.

[0022] In this embodiment, please refer to Figure 1 - Figure 5As shown, a metal pipe cutting processing device includes a processing table 1, a cylindrical protective box 2, a motion component 3, and a cutting component 4. Frame plates 203 are bolted to both sides of the outer wall of the protective box 2. The bottom ends of the frame plates 203 are bolted to the upper surface of the processing table 1, thus fixing the protective box 2 on the processing table 1 and facilitating subsequent disassembly and maintenance. Positioning structures for metal pipes are provided on both sides of the protective box 2 on the processing table 1. The positioning structures include U-shaped frames 102, with vertical plates 101 symmetrically fixed to the bottom ends of the U-shaped frames 102. The bottom ends of the two vertical plates 101 are bolted to the upper surface of the processing table 1. The inside of the circular frame 102 is provided with arc-shaped positioning clamps 103 above and below the metal pipe. The inner wall of the positioning clamps 103 is bonded with flexible anti-slip pads. The top and bottom center of the circular frame 102 are bolted with hydraulic cylinders 104. The telescopic ends of the two hydraulic cylinders 104 penetrate the frame wall and are bolted to the corresponding positioning clamps 103 to achieve accurate positioning and stable clamping of the metal pipe, ensuring that the metal pipe and the through hole 202 are on the same axis. The protective box 2 has perforations 202 at the center of the outer wall facing the positioning structure for metal pipes to pass through. The walls of the two perforations 202 are bonded with annular sealing gaskets 2021. The sealing gaskets 2021 are made of high-temperature resistant flexible silicone material, which can tightly fit the outer wall of metal pipes with different outer diameters to achieve gap sealing between the perforations 202 and the metal pipes. A suction pipe 204 is connected to the bottom of one side of the protective box 2. The connection between the suction pipe 204 and the protective box 2 is sealed with sealant to prevent air leakage. The end of the suction pipe 204 is connected to a suction pump 1051. The suction pump 1051 is bolted to the top of the collection box 105. The output pipe of the suction pump 1051 extends through the top wall of the collection box 105 into the interior. The bottom of the collection box 105 is bolted to the upper surface of the processing table 1. The collection box 105 is equipped with a detachable filter cotton for filtering debris, which is convenient for subsequent debris cleaning and recycling. The outer circumferential wall of the protective box 2 has a movable channel 201 that divides the box into two parts. An annular plate 6 is movably fitted onto the outer surface of the protective box 2 at the movable channel 201. Sliding grooves 601 are provided on both sides of the inner wall of the annular plate 6. Matching slide rails 205 are fixed to the circumferential wall of the protective box 2 at the slide rails 601. The slide rails 601 and 205 slide in contact, ensuring that the annular plate 6 can rotate smoothly along the circumference of the protective box 2. The surface of the slide rails 205 is coated with grease to reduce wear. Connecting blocks 603 are symmetrically fixed to the inner ring wall of the annular plate 6. Both connecting blocks 603... The two connecting blocks 603 have annular inner lining plates 604 fixed at their ends away from the ring plate 6, passing through the movable through groove 201 and with their outer walls sliding in contact with the groove wall. The inner lining plates 604 are made of wear-resistant plastic material, and their outer ring walls slide in contact with the inner wall of the protective box 2. An opening for the cutting component 4 to pass through is provided on the inner lining plate 604 at the through hole 602. The opening size is slightly larger than the cross-sectional size of the cutting component 4. The outer walls on both sides of the inner lining plate 604 slide in contact with the inner wall of the protective box 2, which can prevent cutting debris from entering the gap between the movable through groove 201 and the ring plate 6. Motion component 3 is mounted on the processing table 1 and located on one side of the ring plate 6. Motion component 3 drives the ring plate 6 to perform circumferential motion around the metal pipe along the wall of the protective box 2. Motion component 3 includes a gear ring 301, which is fixedly sleeved on the outer wall of the ring plate 6. A support plate 303 is bolted to the upper surface of the processing table 1 on one side of the frame plate 203. A drive motor 304 is bolted to the top outer wall of the support plate 303. The drive motor 304 is a servo motor, which can realize speed adjustment. The output end of the drive motor 304 passes through the support plate 303, and a drive gear 302 is fixedly sleeved on its outer wall. The tooth surface of the drive gear 302 meshes with the tooth surface of the gear ring 301. The output end of the drive motor 304 controls the rotation speed. The drive gear 302 rotates, causing the gear ring 301 and the ring plate 6 to rotate synchronously. The cutting component 4 is detachably installed on the ring plate 6. The ring plate 6 has a through hole 602. The cutting component 4 passes through the through hole 602 and the moving through groove 201 to follow the ring plate 6 in rotating around the metal pipe and to perform full-circumference cutting on the metal pipe. The side of the protective box 2 away from the moving component 3 is bolted with a through-hole conductive slip ring 5. The through-hole conductive slip ring 5 and the through hole 202 are on the same axis to ensure that the metal pipe can pass through smoothly. The stationary end of the through-hole conductive slip ring 5 is fixedly connected to the protective box 2, and the rotating end of the through-hole conductive slip ring 5 is electrically connected to the cutting component 4 to realize the entanglement-free transmission of electricity and signals during rotation.

[0023] When machining metal pipe fittings, the operator passes the metal pipe fitting to be cut through the perforations 202 on both sides of the protective box 2, so that the part of the metal pipe fitting to be cut is inside the protective box 2. At this time, the sealing gasket 2021 on the inner wall of the perforation 202 is tightly attached to the outer wall of the pipe fitting to achieve gap sealing. The hydraulic cylinder 104 in the positioning structure on both sides is activated. The extension end of the hydraulic cylinder 104 pushes the upper and lower arc-shaped positioning clamps 103 closer to each other until the flexible anti-slip pad on the inner wall of the positioning clamp 103 is tightly attached to the outer wall of the pipe fitting, so as to achieve coaxial positioning and stable clamping of the metal pipe fitting and prevent the pipe fitting from shifting during the cutting process. Subsequently, power is supplied to the electrical components of the cutting assembly 4 through the through-hole conductive slip ring 5, and the cutting assembly 4 is started. The stepper motor 4031 controls the cutting wheel 405 to rotate at high speed. At the same time, the electric telescopic cylinder 402 controls the cutting wheel 405 to approach the metal pipe. The displacement sensor 406 monitors the feed displacement of the cutting wheel 405 in real time to ensure that the cutting depth meets the requirements. After the cutting wheel 405 contacts the metal pipe, the cutting operation begins. At the same time, the drive motor 304 in the motion assembly 3 is started. The drive motor 304 drives the drive gear 302 to rotate. The drive gear 302 drives the meshing gear ring 301 to rotate. The gear ring 301 drives the ring plate 6 to rotate around the protective box 2. During the rotation of the ring plate 6, the smooth guidance is achieved through the cooperation of the slide groove 601 and the slide rail 205. The ring plate 6 also drives the cutting assembly 4 to rotate synchronously, realizing the full circumference cutting of the metal pipe. During the cutting process, the debris generated is blocked by the protective box 2. The inner lining plate 604 prevents the debris from entering the gap between the moving through groove 201 and the ring plate 6, preventing the moving parts from getting stuck and worn. At the same time, the suction pump 1051 is started. The suction pump 1051 creates a negative pressure inside the protective box 2 through the suction pipe 204, sucking the metal debris generated during cutting into the collection box 105. After being filtered by the filter cotton, it is collected in a concentrated manner for subsequent recycling. After the cutting is completed, all drive components are turned off. The electric telescopic cylinder 402 drives the cutting wheel 405 to retract, and the hydraulic cylinder 104 drives the positioning clamp 103 to loosen, taking out the cut metal pipe and completing one cutting operation. This prevents debris from leaking out, avoids polluting the processing workshop environment, reduces the amount of manual cleaning work, and, combined with the negative pressure suction of the suction pipe 204 and the suction pump 1051, concentrates the cutting debris into the collection box 105, preventing debris from adhering to the surface of the sliding guide rail and transmission components, preventing abnormal wear of components, ensuring the long-term stable processing accuracy of the device, and extending the service life of the whole machine. The motion component 3 can stably drive the ring plate 6 to make a circular motion, which in turn drives the cutting component 4 to perform full-circumference cutting around the metal pipe. This not only improves the safety of the cutting operation, but also improves the accuracy of the cutting dimensions, reduces the rework rate of pipe cutting, and indirectly improves the overall processing efficiency.

[0024] Please see Figure 5- Figure 7 As shown, the cutting assembly 4 includes a mounting plate 401 covering the through hole 602. The mounting plate 401 is fixed to the ring plate 6 by bolts, facilitating the disassembly and maintenance of the cutting assembly 4. An electric telescopic cylinder 402 is bolted to the top of the mounting plate 401. The telescopic end of the electric telescopic cylinder 402 passes through the mounting plate 401 and through the movable through slot 201. A protective shell 403 is bolted to the protective shell 403 to protect the internal stepper motor 4031 and prevent debris from entering. Below the cutting wheel 405 is a diamond-coated wheel, which improves cutting efficiency and extends service life. Side plates 404 are fixed to both sides of the bottom of the protective shell 403. The two wheel centers of the cutting wheel 405 are rotatably connected to the corresponding side plates 404 via fixed shafts 4051. Bearings are installed at the connection points between the shafts 4051 and the side plates 404. An arc-shaped baffle 4041 is fixed between the two side plates 404 above the cutting wheel 405. The baffle 4041 can block cutting... During the process, debris is scattered. A cover plate 407 is fixed to the outer wall of a side plate 404. A stepper motor 4031 is bolted to the inside of the protective shell 403. The stepper motor 4031 can achieve precise speed control. The end of a shaft 4051 and the output end of the stepper motor 4031 are rotatably connected to the inner wall of the cover plate 407. A sprocket 4071 is fixedly sleeved on the output end of the stepper motor 4031 and the outer wall of the shaft 4051. The two sprockets 4071 are connected by a chain 4072. The transmission connection enables the power of the stepper motor 4031 to be transmitted to the cutting wheel 405. Both sides of the top of the protective shell 403 are glued with abutment pads 4032. The abutment pads 4032 are made of rubber and can provide flexible buffering during the feeding process of the cutting component 4. The outer wall of the other side plate 404 is embedded with a displacement sensor 406. The detection end of the displacement sensor 406 is aligned with the cutting wheel 405 to monitor the feed displacement of the cutting wheel 405 in real time and transmit the signal to the external control system.

[0025] Power is supplied to the electrical components of the cutting assembly 4 through the through-hole conductive slip ring 5. The stepper motor 4031 is started, and the output end of the stepper motor 4031 drives the corresponding sprocket 4071 to rotate. Through the chain 4072, another sprocket 4071 and the shaft 4051 are driven to rotate, which in turn drives the cutting wheel 405 to rotate at high speed. At the same time, the electric telescopic cylinder 402 is started. The telescopic end of the electric telescopic cylinder 402 pushes the protective shell 403 and the cutting wheel 405 slowly closer to the metal pipe. At this time, the displacement sensor 406 monitors the feed displacement of the cutting wheel 405 in real time and feeds back the monitored signal to the external control system in real time. When the feed displacement of the cutting wheel 405 reaches the preset cutting depth requirement, the external control system controls the electric telescopic cylinder 402 to stop feeding, so as to ensure that the cutting depth accurately meets the processing requirements and avoids the processing scrap due to excessive or shallow cutting.

[0026] The working principle of this invention is as follows: The workers pass the metal pipe to be cut through the perforations 202 on both sides of the protective box 2, so that the part of the metal pipe to be cut is inside the protective box 2. At this time, the sealing gasket 2021 on the inner wall of the perforation 202 is tightly attached to the outer wall of the pipe. Then, the hydraulic cylinder 104 in the positioning structure on both sides is activated. The extension end of the hydraulic cylinder 104 pushes the upper and lower arc-shaped positioning clamps 103 closer to each other until the flexible anti-slip pad on the inner wall of the positioning clamp 103 is tightly attached to the outer wall of the pipe, so as to achieve coaxial positioning and stable clamping of the metal pipe. Subsequently, power is supplied to each electrical component of the cutting assembly 4 through the through-hole conductive slip ring 5, and the stepper motor 4031 is started. The output end of the stepper motor 4031 drives the corresponding sprocket 4071 to rotate. Through the chain 4072, another sprocket 4071 and shaft 4051 are driven to rotate, thereby driving the cutting wheel 405 to rotate at high speed. At the same time, the electric telescopic cylinder 402 is started. The telescopic end of the electric telescopic cylinder 402 pushes the protective shell 403 and the cutting wheel 405 slowly closer to the metal pipe. At this time, the displacement sensor 406 monitors the feed displacement of the cutting wheel 405 in real time and feeds back the monitored signal to the external control system in real time. When the feed displacement of the cutting wheel 405 reaches the preset cutting depth requirement, the external control system controls the electric telescopic cylinder 402 to stop feeding. After the cutting wheel 405 contacts the metal pipe, the cutting operation begins. At the same time, the drive motor 304 is started, which drives the drive gear 302 to rotate. The drive gear 302 drives the meshing gear ring 301 to rotate, and the gear ring 301 drives the ring plate 6 to rotate around the protective box 2. During the rotation of the ring plate 6, the cooperation between the slide groove 601 and the slide rail 205 achieves smooth guidance. The ring plate 6 also drives the cutting component 4 to rotate synchronously, realizing full circumferential cutting of the metal pipe. The debris generated during the cutting process is blocked by the protective box 2. At the same time, the suction pump 1051 is started. The suction pump 1051 creates negative pressure inside the protective box 2 through the suction pipe 204, sucking the metal debris generated during cutting into the collection box 105. After being filtered by the filter cotton, it is collected. After the cutting is completed, all drive components are turned off. The electric telescopic cylinder 402 drives the cutting wheel 405 to retract, and the hydraulic cylinder 104 drives the positioning clamp 103 to release, and the cut metal pipe is taken out, completing one cutting operation.

[0027] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the invention and are not intended to limit it. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the invention, but such modifications, substitutions, and variations are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A metal pipe cutting processing device, comprising a processing table (1), a cylindrical protective box (2), a motion component (3), and a cutting component (4), characterized in that, The protective box (2) has a frame plate (203) bolted to both sides of its outer wall. The bottom of the frame plate (203) is bolted to the upper surface of the processing table (1). The processing table (1) has a positioning structure for metal pipes on both sides of the protective box (2). The protective box (2) has a through hole (202) for metal pipes to pass through at the center of its outer wall facing the positioning structure. The protective box (2) has a movable through groove (201) that divides the box into two parts on its circumferential outer wall. The protective box (2) has a ring plate (6) movably fitted on its outer side at the movable through groove (201). The ring plate (6) has a sliding groove (601) on both sides of its inner wall. The protective box (2) has a matching slide rail (205) fixed at the sliding groove (601) on its circumferential wall. The motion component (3) is set on the processing table (1) and located on one side of the ring plate (6). The motion component (3) is used to drive the ring plate (6) to make a circular motion around the metal pipe along the wall of the protective box (2). The cutting component (4) is detachably installed on the ring plate (6). The surface of the ring plate (6) is provided with a through hole (602). The cutting component (4) passes through the through hole (602) and the moving through groove (201) to follow the ring plate (6) to rotate around the metal pipe and to perform full circumferential cutting on the metal pipe.

2. The metal pipe cutting and processing device according to claim 1, characterized in that, The motion component (3) includes a gear ring (301), which is fixedly sleeved on the outer side wall of the ring plate (6). The upper surface of the processing table (1) is located on one side of the frame plate (203) and a support plate (303) is installed by bolts. The top outer wall of the support plate (303) is bolted with a drive motor (304). The output end of the drive motor (304) passes through the support plate (303) and a drive gear (302) is fixedly sleeved on its outer wall. The tooth surface of the drive gear (302) meshes with the tooth surface of the gear ring (301).

3. The metal pipe cutting and processing device according to claim 1, characterized in that, The cutting assembly (4) includes a mounting plate (401) covering the through hole (602). The mounting plate (401) is fixed to the ring plate (6) by bolts. An electric telescopic cylinder (402) is installed on the top of the mounting plate (401) by bolts. The telescopic end of the electric telescopic cylinder (402) passes through the mounting plate (401) and through the movable through slot (201). A protective shell (403) is installed by bolts. A cutting wheel (405) is provided below the protective shell (403). Side plates (404) are fixed on both sides of the bottom end of the protective shell (403). The two wheel centers of the cutting wheel (405) are rotatably connected to the corresponding side plates (404) through fixed shafts (4051).

4. The metal pipe cutting and processing device according to claim 3, characterized in that, An arc-shaped baffle (4041) is fixed between the two side plates (404) above the cutting wheel (405). A cover plate (407) is fixed to the outer wall of one of the side plates (404). A stepper motor (4031) is installed inside the protective shell (403) by bolts. The end of one of the shafts (4051) and the output end of the stepper motor (4031) are rotatably connected to the inner wall of the cover plate (407). A sprocket (4071) is fixedly sleeved on the output end of the stepper motor (4031) and the outer wall of the shaft (4051). The two sprockets (4071) are connected by a chain (4072).

5. The metal pipe cutting and processing device according to claim 3, characterized in that, The protective shell (403) has abutting pads (4032) glued to both sides of its top end, and a displacement sensor (406) is embedded in the outer wall of the other side plate (404).

6. The metal pipe cutting and processing device according to claim 1, characterized in that, The inner ring wall of the ring plate (6) is symmetrically fixed with connecting blocks (603). Both connecting blocks (603) pass through the movable through groove (201) and their outer walls slide in contact with the groove wall. The ends of the two connecting blocks (603) away from the ring plate (6) are fixed with an annular inner lining plate (604). The outer ring wall of the inner lining plate (604) slides in contact with the inner wall of the protective box (2).

7. The metal pipe cutting and processing device according to claim 6, characterized in that, The inner liner (604) has an opening at the through hole (602) for the cutting assembly (4) to pass through, and the outer walls on both sides of the inner liner (604) slide in contact with the inner wall of the protective box (2).

8. The metal pipe cutting and processing device according to claim 1, characterized in that, The walls of the two perforations (202) are bonded with annular sealing gaskets (2021). A suction pipe (204) is connected to the bottom of one side of the protective box (2). A suction pump (1051) is connected to the end of the suction pipe (204). The suction pump (1051) is bolted to the top of the collection box (105). The output pipe of the suction pump (1051) extends through the top wall of the collection box (105) into the interior. The bottom of the collection box (105) is bolted to the upper surface of the processing table (1).

9. A metal pipe cutting and processing device according to claim 1, characterized in that, The positioning structure includes a spiral frame (102), with vertical plates (101) symmetrically fixed at the bottom of the spiral frame (102). The bottom ends of the two vertical plates (101) are bolted to the upper surface of the processing table (1). The spiral frame (102) has arc-shaped positioning clamps (103) located above and below the metal pipe inside. Hydraulic cylinders (104) are bolted to the top and bottom center of the spiral frame (102). The telescopic ends of the two hydraulic cylinders (104) penetrate the frame wall and are bolted to the corresponding positioning clamps (103).

10. A metal pipe cutting and processing device according to claim 1, characterized in that, The protective box (2) is mounted with a through-hole conductive slip ring (5) on the side away from the moving component (3) by bolts. The through-hole conductive slip ring (5) and the through hole (202) are on the same axis. The rotating end of the through-hole conductive slip ring (5) is electrically connected to the cutting component (4).

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