A laser pipe cutting machine with slag removal function

Abstract

The application discloses a laser pipe cutting machine with a slag removal function, which comprises a splicing base, a laser cutting mechanism, an external smoke extraction device, a burr removal device, a pipe clamping seat, a moving limiting seat, a fixed cross beam, lifting legs, a sliding rail and a rack, the splicing base is a bearing base body of the whole machine, the bottom of the splicing base is provided with the lifting legs, the top of the splicing base is provided with the fixed cross beam, the fixed cross beam is provided with the sliding rail and the rack, the laser cutting mechanism, the external smoke extraction device, the burr removal device, the pipe clamping seat and the moving limiting seat are sequentially arranged on the fixed cross beam along a pipe processing direction and are driven and positioned through the rack, and the device has the beneficial effects that the device adopts a modular integrated layout, highly integrates the pipe clamping and positioning, laser cutting, smoke collection, multi-dimensional slag removal and fine polishing functions, and gives up the split operation mode of traditional motorcycle exhaust pipe processing, that is, cutting first, then transferring, and manual secondary slag removal.

Description

Technical Field

[0001] This invention belongs to the field of laser tube cutting machine technology, and particularly relates to a laser tube cutting machine with slag removal function. Background Technology

[0002] In the manufacturing processes of motorcycle exhaust pipes and other pipe materials, fixed-length cutting and end shaping are key processing steps. The flatness, slag-free nature, and roundness of the pipe cutting end directly determine the subsequent welding sealing, assembly accuracy, and exhaust noise reduction effect of the exhaust pipe, which is crucial to the exhaust performance and appearance quality of the entire vehicle. Currently, most conventional laser pipe cutting equipment on the market is designed for general-purpose pipe materials and can only complete basic fixed-length cutting operations. Its functions are limited and cannot meet the special precision processing needs of motorcycle exhaust pipes, resulting in many technical defects in the actual mass production of exhaust pipes.

[0003] Traditional pipe cutting machines for motorcycle exhaust pipe processing generally employ a separate cutting and deburring operation mode. This involves first cutting the exhaust pipe material, and then manually using hand-held grinding tools or independent deburring equipment for secondary deburring and cleaning. Because motorcycle exhaust pipes are thin-walled components with stringent requirements for end welding and assembly precision, separate processing requires multiple transfers and secondary clamping and positioning. This not only makes the process cumbersome and slows down the production cycle, significantly reducing the efficiency of mass production of exhaust pipes and increasing manual grinding costs, but also makes it easy for positioning offsets to occur during multiple clamping, leading to problems such as errors in pipe cutting length and end misalignment, which seriously affects the consistency of exhaust pipe assembly. Meanwhile, the laser cutting process of stainless steel exhaust pipes for motorcycles generates a large amount of high-temperature stainless steel slag, fine metal particles, and welding fumes. Traditional equipment lacks a targeted slag removal and dust collection structure and relies solely on overall exhaust dust removal, which cannot accurately collect waste slag and fumes at the narrow ends of the exhaust pipe. This easily leads to the spread of fumes and dust, polluting the workshop environment. Furthermore, the high-temperature slag generated from cutting thin-walled pipes is prone to quickly adhering to and solidifying on the inner and outer walls of the exhaust pipe ends, forming sharp burrs and hard slag. Manual polishing is difficult and time-consuming, and it is also prone to problems such as over-polishing, damaging the pipe wall, and deforming the ends, resulting in a high scrap rate. Summary of the Invention

[0004] The purpose of this invention is to solve the serious blind spots in the slag removal of existing pipe cutting machines for processing motorcycle exhaust pipes. Motorcycle exhaust pipes have small diameters and narrow cavities. Traditional equipment can only perform simple grinding on the outer wall and end face of the pipe port, lacking a dedicated internal cleaning and slag removal structure. After cutting, the fine molten slag, dotted slag, and inner burrs remaining on the inner wall of the exhaust pipe cannot be completely removed. The remaining impurities on the inner wall not only cause the exhaust pipe port to be less than the standard smoothness, but also lead to defects such as incomplete welding, slag inclusion, and poor sealing in subsequent welding. At the same time, the burrs remaining on the inner wall can easily cause exhaust airflow turbulence and carbon buildup, which will affect the smoothness of motorcycle exhaust and noise reduction performance in the long run.

[0005] The present invention achieves the above objectives through the following technical solution: a laser pipe cutting machine with slag removal function, comprising a splicing base, a laser cutting mechanism, an external smoke extraction device, a burr removal device, a pipe clamping seat, a movable limiting seat, a fixed crossbeam, lifting legs, a slide rail, and a rack. The splicing base is the load-bearing base of the whole machine, the lifting legs are provided at the bottom, the fixed crossbeam is installed at the top, and the slide rail and the rack are arranged on the fixed crossbeam. The laser cutting mechanism, external fume extraction device, burr removal device, pipe clamping seat, and movable limiting seat are arranged sequentially on the fixed crossbeam along the pipe processing direction. The laser cutting mechanism, burr removal device, pipe clamping seat, and movable limiting seat can slide along the slide rail and achieve position driving and positioning through the rack. The pipe clamping seat is used to clamp the pipe to be processed, the laser cutting mechanism is used to cut the pipe, the external fume extraction device is used to extract the smoke and dust generated during the cutting process, the burr removal device is used to remove burrs and residues from the pipe cutting end, and the movable limiting seat is used to limit and fix the axial position of the pipe. The whole machine adopts a modular integrated layout, integrating cutting, smoke and dust collection, slag removal and grinding, pipe clamping, and limiting mechanism into one unit, replacing the traditional separate operation mode of pipe cutting and slag removal, realizing integrated automated processing of pipe cutting and slag removal, greatly simplifying the processing procedures and improving processing efficiency.

[0006] Furthermore, the laser cutting mechanism includes a fixed base, a slider, a first gear motor, a second gear motor, a gear disk, a fume extractor, a protective cover, and a laser cutting head. The fixed base is slidably mounted on the slide rail via the slider. The first gear motor meshes with the rack and pinion, driving the fixed base to move axially along the slide rail. The second gear motor is connected to the gear disk, on which the laser cutting head is mounted. The laser cutting head rotates circumferentially with the gear disk. The fume extractor is connected to an external fume extraction device. The protective cover is positioned over the outside of the laser cutting head. The independent fume extractor, connected to the external fume extraction device, along with the protective cover covering the cutting area, allows for targeted collection of smoke and splatter waste at the cutting point. This prevents smoke and dust from spreading and polluting the equipment and environment, protects the laser cutting head, prevents waste from adhering and damaging the equipment, and extends the equipment's lifespan.

[0007] Furthermore, the laser cutting head is equipped with a first lead screw motor moving mechanism, a slide rail slider moving seat, a bottom slag suction structure, an outer ring slag suction structure, and a pipe internal cleaning mechanism; the first lead screw motor moving mechanism drives the slide rail slider moving seat to move, and the laser cutting head, bottom slag suction structure, outer ring slag suction structure, and pipe internal cleaning mechanism are integrated and installed on the slide rail slider moving seat; the bottom slag suction structure is used to adsorb residue at the bottom of the pipe cutting port, and the outer ring slag suction structure is used to adsorb residue around the outer ring of the pipe cutting port. The internal pipe cleaning mechanism extends into the pipe to remove residual slag and burrs from the inner wall after cutting. It integrates multiple slag removal structures, including bottom slag suction, outer ring slag suction, and internal cleaning, into the laser cutting head, achieving simultaneous slag removal during cutting. This eliminates the need for secondary transfer and processing, completely solving the inefficient operation mode of traditional pipe cutting machines where cutting is done first and then manual slag removal is required. The relative position of the slag removal structure and the pipe end can be precisely adjusted by a screw motor driving the slide rail slider, adapting to the slag removal needs of pipes with different diameters and cutting thicknesses. It offers high adjustment accuracy and a wide range of adaptability.

[0008] Furthermore, the bottom slag suction structure includes a second lead screw motor moving structure, a slag suction box, an air suction pipe interface, and a flared opening. The second lead screw motor moving structure is mounted on the slide rail slider moving seat. The slag suction box is driven by the second lead screw motor moving structure and can move radially towards or away from the pipe cutting port. The slag suction box is provided with the air suction pipe interface for communication with a negative pressure device. The flared opening is located at the end of the slag suction box facing the pipe and is aligned with the bottom of the pipe cutting port to collect molten slag and dust generated during the cutting process. The flared opening slag suction structure increases the slag suction coverage area. Combined with the negative pressure device, it can quickly adsorb high-temperature molten slag, particulate waste, and dust during the cutting process, preventing high-temperature molten slag from adhering to the bottom of the pipe port and solidifying, reducing the subsequent grinding workload. The structure is independent and controllable, and the slag suction operation can be started and stopped in real time according to the cutting process to dynamically remove waste, effectively improving the cleanliness of the slag removal at the bottom of the port and ensuring a smooth pipe bottom cut.

[0009] Furthermore, the outer ring slag suction structure includes a shell, a slag collection chamber, a water outlet pipe, a sponge pad, and a suction pipe connection interface. The shell is annular, the slag collection chamber is located inside the shell, and the sponge pad is located on the side of the shell facing the pipe to fit against the outer wall of the pipe and form a sealed space. The water outlet pipe is located inside the slag collection chamber and is used to introduce cooling water to cool and wet the sponge pad and collect the slag. The suction pipe connection interface is located at the bottom of the shell and is used to connect with a negative pressure device to suck away the cooled slag and fumes. An annular shell is used. Adaptable to the external structure of pipes, and with a sponge pad for a tight seal, it can form a sealed slag suction space around the pipe port, significantly improving the efficiency of negative pressure slag suction, preventing waste slag and dust from overflowing, and ensuring no dead corners in slag removal. The built-in cooling water outlet pipe can quickly cool and solidify high-temperature welding slag, while simultaneously wetting the sponge pad to effectively prevent high-temperature molten slag from splashing and sticking, and also prevent fine dust from scattering. It has multiple effects of dust reduction, cooling, and slag removal. The independent welding slag collection chamber can centrally collect the cooled waste slag, and with the bottom negative pressure interface for unified suction and cleaning, the waste slag collection is thorough, eliminating the need for frequent manual cleaning of the equipment and reducing labor and maintenance costs.

[0010] Furthermore, the internal pipe cleaning mechanism includes a telescopic rod, an air inlet, an air outlet, a pipe internal welding slag cleaning brush, and a rotating motor that drives the telescopic rod to rotate. The telescopic rod is axially mounted on the fixed base and can extend and retract along the pipe axis to reach inside the pipe. The front end of the telescopic rod is equipped with the pipe internal welding slag cleaning brush, and the rear end is connected to the rotating motor for drive rotation. The telescopic rod is equipped with an air inlet connected to a high-pressure air source and an air outlet for blowing high-pressure airflow into the pipe. The pipe internal welding slag cleaning brush rotates back and forth synchronously with the telescopic rod, cooperating with the high-pressure airflow blown from the air outlet to brush away and clean the residual slag and slag on the inner wall of the pipe. The telescopic rod is mounted on a fixed base and works with a rotating motor to drive the brush. It has both telescopic insertion and rotating cleaning functions, allowing it to penetrate deep into the pipe to specifically clean hidden slag, slag, and fine burrs on the pipe inner wall that are difficult to handle with traditional equipment. It fills the blind spots in slag removal inside the pipe and adopts a dual slag removal mode of high-pressure air blowing and rotating brush. The brush mechanically peels off stubborn waste, while the high-pressure airflow blows away loose debris. The cleaning force is uniform, which can thoroughly remove slag without scratching the pipe inner wall material, ensuring the smoothness of the pipe inner wall. The telescopic rod can be extended and adjusted as needed to adapt to the processing requirements of pipe ends of different lengths. The structure has strong linkage and a high degree of automation, eliminating the need for manual insertion into the pipe for cleaning and greatly improving the safety of the operation.

[0011] Furthermore, the burr removal device includes a slider fixing base, a third gear motor, a fourth gear motor, and a grinding and slag removal device. The slider fixing base is slidably mounted on the slide rail. The third gear motor is mounted on the slider fixing base and meshes with the rack, driving the slider fixing base to move axially along the pipe. The fourth gear motor is mounted on the slider fixing base and is connected to the grinding and slag removal device, driving the grinding and slag removal device to rotate around the pipe axis. The grinding and slag removal device has a ring structure and is sleeved on the outside of the pipe, used to grind and remove slag from the inner and outer walls of the pipe cutting port, removing burrs and slag generated during cutting. An independently installed post-deburring device performs secondary fine grinding and slag removal on the pipe ends after cutting and initial slag removal, forming a dual processing technology of "coarse slag removal + fine grinding". This completely eliminates residual fine burrs and slag at the ends, and the processing accuracy far exceeds that of traditional single-stage slag removal equipment. The device's axial movement and grinding mechanism's circumferential rotation are achieved through dual-gear motors, which can adapt to the pipe position and achieve 360° circumferential grinding. It is suitable for processing various round pipe ends, has strong versatility, and features an overall sliding installation structure that allows for flexible adjustment of the grinding position. It can work in conjunction with the front-end laser cutting and slag removal mechanisms to achieve automated assembly line processing, significantly improving overall processing efficiency.

[0012] Furthermore, the grinding and slag removal device includes a fixed connecting seat, an end gear disc, a slag collection shell, a gas connecting pipe, an air nozzle, and a grinding head; the fixed connecting seat is drivenly connected to the fourth gear motor, the end gear disc is fixedly connected to the fixed connecting seat, and the slag collection shell is an annular cover fitted around the outside of the end gear disc; the grinding head is radially mounted on the inner ring of the end gear disc and rotates synchronously with the end gear disc, used to grind burrs on the inner and outer walls of the pipe cutting port; the gas connecting pipe is installed on the slag collection shell, and the air nozzle is connected to the gas connecting pipe, blowing high-pressure airflow toward the pipe port to remove the slag generated during grinding. The slag is blown into the slag collection shell. The transmission structure, which uses an end-tooth disc to drive the grinding head to rotate, has high transmission stability and uniform rotation. This ensures consistent grinding force around the pipe end, avoiding uneven grinding and residual burrs. The end flatness is consistent. The integrated high-pressure air blowing structure and annular slag collection shell remove loose slag in real time during the grinding process and collect it into the collection shell. This allows grinding, slag removal, and slag collection to be completed simultaneously, preventing secondary adhesion of grinding slag to the pipe end. The annular sleeve structure has strong adaptability and can be used for grinding pipe ends with different outer diameters. The structure is compact, does not occupy extra processing space, and has a high degree of equipment integration.

[0013] Furthermore, the grinding head includes a filter cylinder, a connector, a grinding cylinder, a pipe external welding slag cleaning brush, and welding slag discharge holes; the grinding cylinder is fixedly installed on the inner ring of the end gear plate via the connector, and the filter cylinder is sleeved on the outside of the grinding cylinder; the pipe external welding slag cleaning brush is disposed on the inner wall of the grinding cylinder, and the welding slag discharge holes are evenly distributed on the filter cylinder and the grinding cylinder; the grinding cylinder rotates with the end gear plate to grind the pipe end, and the welding slag generated during grinding can enter the welding slag collection shell through the welding slag discharge holes, while the pipe external welding slag cleaning brush simultaneously cleans the welding slag remaining on the outer wall of the pipe. The composite structure of the deburring and grinding cylinder combined with the external cleaning brush can simultaneously grind the end face of the pipe port and clean the fine residue on the outer wall, achieving integrated and refined slag removal of the port and outer wall, greatly improving the overall processing quality. The evenly distributed welding slag discharge holes can quickly guide the fine waste slag generated by grinding into the collection shell, preventing waste slag from accumulating in the grinding area and preventing waste slag from rubbing and scratching the pipe surface, thus ensuring the quality of pipe processing. The combined structure of the filter cylinder and grinding cylinder can perform simple filtration and blocking of waste slag, preventing large particles of waste slag from flowing back into the processing area, while improving the stability of the grinding structure, extending the service life of the grinding head, and reducing equipment wear and tear costs.

[0014] Furthermore, the pipe clamping seat includes a self-locking sliding base, a self-locking sliding lifting guide roller, a bidirectional cylinder, and a clamping head; the self-locking sliding base is slidably mounted on the slide rail, and can move along the pipe axis to achieve position self-locking; the self-locking sliding lifting guide roller is mounted on the self-locking sliding base to support the pipe and can adjust its height according to the pipe diameter; the bidirectional cylinder is mounted on the self-locking sliding base, and its piston rod end is connected to the clamping head. The bidirectional cylinder drives the clamping head to clamp the pipe synchronously from both sides of the pipe to achieve centering and fixing of the pipe.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. Achieving integrated automated processing for cutting and slag removal, significantly improving the production efficiency of motorcycle exhaust pipes: This equipment adopts a modular integrated layout, highly integrating pipe clamping and positioning, laser cutting, dust collection, multi-dimensional slag removal, and fine grinding functions. It abandons the traditional separate operation mode of "cutting first, then transferring, and manually removing slag twice" in motorcycle exhaust pipe processing. The various functional mechanisms of the whole machine have strong linkage, and can complete the entire process of fixed-length cutting of exhaust pipes, simultaneous cleaning of inner and outer walls, and fine grinding of ends in the same station. There is no need for multiple clamping and workpiece transfers, which effectively simplifies the processing steps, shortens the production cycle, and completely solves the problems of low efficiency and limited capacity of batch production in traditional manual grinding processes. It significantly improves the overall production efficiency of large-scale and assembly line processing of motorcycle exhaust pipes.

[0016] 2. Multi-dimensional, no-dead-angle slag removal and grinding significantly improves the processing precision and finished product quality of exhaust pipe ends: This equipment innovatively integrates a multi-slag removal structure including bottom slag suction, annular outer ring sealing slag suction, internal pipe telescopic cleaning, and rear-mounted circumferential fine grinding. It specifically addresses industry pain points such as blind spots in internal wall slag removal, slag buildup at the ends, and burr residue in thin-walled, small-diameter motorcycle exhaust pipes. Real-time cleaning of high-temperature molten slag is achieved through simultaneous cutting and negative pressure slag suction, preventing the molten slag from solidifying and adhering to the ends of thin-walled pipes. Then, deep slag removal of the inner wall of the pipe is achieved through a "rotating brush + high-pressure air blowing" method. Finally, a 360° annular grinding mechanism completes the fine shaping of the ends, forming a dual processing technology of "coarse slag removal + fine grinding." This thoroughly removes fine burrs and residual welding slag from the inner and outer walls of the exhaust pipe ends, effectively ensuring the flatness, roundness, and smoothness of the exhaust pipe ends, eliminating defects such as incomplete welding, slag inclusion, and poor sealing in subsequent welding processes, and ensuring consistency between the exhaust performance and appearance quality of the motorcycle.

[0017] 3. Strong self-adjustment and adaptability, suitable for processing various specifications of motorcycle exhaust pipes, and high equipment versatility: Each processing mechanism of this equipment is equipped with an independent gear and rack sliding structure and a lead screw precision adjustment structure. The laser cutting slag removal component can be precisely adjusted in working position via a lead screw motor. The grinding mechanism adopts a ring-shaped fitting structure, and the pipe clamping seat can adaptively adjust the support height and clamping distance, enabling adaptive alignment processing of motorcycle exhaust pipes with different diameters, wall thicknesses, and port lengths. This effectively solves the problems of traditional pipe cutting machines having fixed structures, poor adaptability, and inability to process multiple specifications of exhaust pipes. A single machine can meet the mass production needs of multiple motorcycle exhaust pipes, reducing the equipment procurement investment for enterprises.

[0018] 4. Centralized closed-loop treatment of smoke and waste, environmentally friendly and reducing equipment operation and maintenance costs: This equipment is equipped with a protective cover and enclosed cutting structure, combined with fixed-point smoke and dust extraction, annular sealed negative pressure slag suction, and cooling water cooling slag collection structure. It can collect high-temperature metal slag, fine dust, and harmful smoke generated during the cutting of motorcycle exhaust pipes in a fixed, centralized, and thorough manner, effectively preventing smoke and dust diffusion and dust dispersion, improving the workshop working environment, and meeting the environmental protection production standards of the auto parts industry. At the same time, it can effectively prevent high-temperature waste and metal dust from adhering and accumulating on the surface of precision parts such as laser cutting heads and grinding heads, avoiding optical path blockage, mechanism jamming, component wear and other failures, greatly reducing equipment failure rate and component wear, extending equipment service life, and reducing the operation and maintenance costs of manual slag removal and equipment maintenance.

[0019] 5. High degree of automation and good stability, improving operational safety and product qualification rate: This equipment adopts fully automated mechanical clamping, positioning, cutting, slag removal, and grinding operations. It eliminates the need for manual close contact with high-temperature cutting areas and sharp ends, completely avoiding safety hazards such as burns, scratches, and dust inhalation associated with manual grinding, significantly improving operational safety. Simultaneously, it employs a stable transmission structure with precise gear and rack positioning, precise lead screw adjustment, and uniform rotation of the end gear disc for grinding. This effectively avoids problems such as uneven grinding force, end deformation, pipe wall scratches, and clamping misalignment common in traditional manual grinding, ensuring consistent processing precision for each batch of exhaust pipes, significantly reducing the scrap rate of thin-walled exhaust pipes, and significantly improving product qualification rate and market competitiveness. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the present invention; Figure 2 This is a schematic diagram of the splicing base of the present invention; Figure 3 This is a schematic diagram of the laser cutting mechanism of the present invention; Figure 4 This is a schematic diagram of the laser cutting head of the present invention; Figure 5 This is a schematic diagram of the bottom slag suction structure of the present invention; Figure 6 This is a schematic diagram of the outer ring slag suction structure of the present invention; Figure 7 This is a schematic diagram of the internal cleaning mechanism of the pipe according to the present invention; Figure 8 This is a schematic diagram of the burr removal device of the present invention; Figure 9 This is a schematic diagram of the grinding and slag removal device of the present invention; Figure 10 This is a schematic diagram of the grinding head of the present invention; Figure 11 This is a schematic diagram of the pipe clamping seat of the present invention; In the diagram: 1-Assembly base, 2-Laser cutting mechanism, 3-External smoke extraction device, 4-Deburr removal device, 5-Pipe clamping seat, 6-Moving limit seat, 11-Fixed crossbeam, 12-Lifting leg, 13-Slide rail, 14-Rack, 21-Fixed seat, 22-Slider, 23-First gear motor, 24-Second gear motor, 25-Gear disk, 26-Smoke extraction tube, 27-Protective cover, 28-Laser cutting head, 281-First lead screw motor moving mechanism, 282-Slide rail slider moving seat, 283-Bottom slag suction structure, 284-Outer ring slag suction structure, 285-Pipe internal cleaning mechanism, 2831-Second lead screw motor moving structure, 2832-Slag suction box, 2833-Suction pipe interface, 2834-Flange mouth, 2841-Outer shell, 2842- 2843 - Slag collection bin, 2844 - Water outlet pipe, 2845 - Sponge pad, 2845 - Suction pipe connection interface, 2851 - Telescopic rod, 2852 - Air inlet, 2853 - Air blowing port, 2854 - Slag cleaning brush inside the pipe, 41 - Slider fixing base, 42 - Third gear motor, 43 - Fourth gear motor, 44 - Grinding and slag removal device, 441 - Fixed connection seat, 442 - End gear plate, 443 - Slag collection shell, 444 - Gas connection pipe, 445 - Air blowing nozzle, 446 - Grinding head, 4461 - Filter cylinder, 4462 - Connector, 4463 - Grinding cylinder, 4464 - Slag cleaning brush outside the pipe, 4465 - Slag discharge hole, 51 - Self-locking sliding base, 52 - Self-locking sliding lifting guide roller, 53 - Two-way cylinder, 54 - Clamping head. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0023] Combination Figures 1-11As shown, a laser pipe cutting machine with slag removal function includes a splicing base 1, a laser cutting mechanism 2, an external smoke extraction device 3, a burr removal device 4, a pipe clamping seat 5, a movable limiting seat 6, a fixed crossbeam 11, lifting legs 12, a slide rail 13, and a rack 14. The splicing base 1 is the load-bearing base of the whole machine. The bottom of the splicing base is provided with lifting legs 12, and the top is equipped with a fixed crossbeam 11. The fixed crossbeam 11 is provided with slide rail 13 and rack 14. The laser cutting mechanism 2, the external fume extraction device 3, the burr removal device 4, the pipe clamping seat 5, and the movable limiting seat 6 are arranged sequentially on the fixed crossbeam 11 along the pipe processing direction. The laser cutting mechanism 2, the burr removal device 4, the pipe clamping seat 5, and the movable limiting seat 6 can slide along the slide rail 13 and achieve position driving and positioning through the rack 14. The pipe clamping seat 5 is used to clamp the pipe to be processed, the laser cutting mechanism 2 is used to cut the pipe, the external fume extraction device 3 is used to extract the smoke and dust generated during the cutting process, the burr removal device 4 is used to remove burrs and residues from the pipe cutting end, and the movable limiting seat 6 is used to limit and fix the axial position of the pipe. The whole machine adopts a modular integrated layout, integrating cutting, smoke and dust collection, slag removal and grinding, pipe clamping and limiting mechanism into one unit, replacing the traditional separate operation mode of pipe cutting and slag removal, realizing integrated automated processing of pipe cutting and slag removal, greatly simplifying the processing procedure and improving processing efficiency; The laser cutting mechanism 2 includes a fixed base 21, a slider 22, a first gear motor 23, a second gear motor 24, a gear disk 25, a smoke extractor 26, a protective cover 27, and a laser cutting head 28. The fixed base 21 is slidably mounted on the slide rail 13 via the slider 22. The first gear motor 23 meshes with the rack 14, driving the fixed base 21 to move axially along the slide rail 13. The second gear motor 24 is connected to the gear disk 25, on which the laser cutting head 28 is mounted. The laser cutting head 28 rotates circumferentially with the gear disk 25. The smoke extractor 26 is connected to an external smoke extraction device 3, and the protective cover 27 covers the smoke extractor 26. An independent fume extractor connected to an external fume extraction device is installed on the outer side of the laser cutting head 28. Combined with a protective cover enclosing the cutting area, it can specifically collect smoke and splatter waste at the cutting point, preventing smoke and dust from spreading and polluting the equipment and environment, while also protecting the laser cutting head from waste adhesion and damage, thus extending the equipment's lifespan. The laser cutting head 28 is equipped with a first lead screw motor moving mechanism 281, a slide rail slider moving seat 282, a bottom slag suction structure 283, an outer ring slag suction structure 284, and an internal pipe cleaning mechanism 285. The first lead screw motor moving mechanism 281 drives the slide rail slider moving seat 282 to move, and the slide rail slider... The movable base 282 integrates a laser cutting head 28, a bottom slag suction structure 283, an outer ring slag suction structure 284, and a pipe internal cleaning mechanism 285. The bottom slag suction structure 283 is used to absorb residue from the bottom of the pipe cutting end, the outer ring slag suction structure 284 is used to absorb residue from the outer ring of the pipe cutting end, and the pipe internal cleaning mechanism 285 extends into the pipe to remove residual molten slag and burrs from the inner wall after cutting. By integrating multiple slag removal structures—bottom slag suction, outer ring slag suction, and internal cleaning—into the laser cutting head, slag removal is achieved simultaneously with cutting, eliminating the need for secondary transfer and secondary processing, and completely solving the problem of traditional pipe cutting machines requiring cutting first and then manual labor. The inefficient slag removal operation mode can be precisely adjusted by using a screw motor to drive the slide rail slider moving seat, which can precisely adjust the relative position of the slag removal structure and the pipe port, adapting to the slag removal needs of pipes with different diameters and cutting thicknesses. It has high adjustment accuracy and a wide range of adaptability. The bottom slag suction structure 283 includes a second screw motor moving structure 2831, a slag suction box 2832, an air suction pipe interface 2833, and a bell mouth 2834. The second screw motor moving structure 2831 is installed on the slide rail slider moving seat 282, and the slag suction box 2832 is driven by the second screw motor moving structure 2831, which can move closer to or away from the pipe cutting port along the radial direction of the pipe.The slag suction box 2832 is equipped with a suction pipe interface 2833 for connecting to a negative pressure device. The end of the slag suction box 2832 facing the pipe has a flared opening 2834, which is aligned with the bottom of the pipe cutting port to collect molten slag and fumes generated during the cutting process. The flared opening structure increases the slag suction coverage area. Combined with the negative pressure device, it can quickly adsorb high-temperature molten slag, particulate waste, and fumes generated during the cutting process, preventing the high-temperature molten slag from adhering to and solidifying at the bottom of the pipe port, reducing subsequent grinding work. The structure is independent and controllable, allowing for real-time start and stop of the slag suction operation as the cutting progresses, dynamically removing waste and effectively improving the cleanliness of the slag removal at the bottom of the port. To ensure a smooth cut at the bottom of the pipe; the outer ring slag suction structure 284 includes an outer shell 2841, a slag collection chamber 2842, a water outlet pipe 2843, a sponge pad 2844, and a suction pipe connection interface 2845; the outer shell 2841 is an annular structure, the slag collection chamber 2842 is located inside the outer shell 2841, and the sponge pad 2844 is located on the side of the outer shell 2841 facing the pipe, used to fit against the outer wall of the pipe to form a sealed space; the water outlet pipe 2843 is located inside the slag collection chamber 2842, used to introduce cooling water to cool and wet the sponge pad 2844 and collect the slag, and the suction pipe connection interface 2845 is located at the bottom of the outer shell 2841, used to connect with the negative pressure pipe. The pressure device is connected to suck away cooled welding slag and fumes. It features a ring-shaped outer shell that adapts to the pipe wall structure, and a sponge pad for a tight seal. This creates a sealed suction space around the pipe port, significantly improving negative pressure suction efficiency and preventing waste slag and fumes from overflowing. Slag removal is thorough, with no dead corners. An internal cooling water outlet pipe rapidly cools and solidifies high-temperature welding slag, while simultaneously wetting the sponge pad to effectively prevent molten slag from splashing and sticking, and also to prevent fine dust from dispersing. It combines dust suppression, cooling, and slag removal. An independent welding slag collection chamber centrally collects cooled waste slag, which is then uniformly suctioned and cleaned via the bottom negative pressure interface. Waste slag collection is thorough, eliminating the need for frequent manual cleaning. To reduce labor maintenance costs, the internal pipe cleaning mechanism 285 includes a telescopic rod 2851, an air inlet 2852, an air blowing port 2853, a pipe internal welding slag cleaning brush 2854, and a rotating motor that drives the telescopic rod 2851 to rotate. The telescopic rod 2851 is axially mounted on the fixed base 21 and can extend and retract along the pipe axis and extend into the pipe. The front end of the telescopic rod 2851 is provided with the pipe internal welding slag cleaning brush 2854, and the rear end is connected to the rotating motor for transmission and is driven to rotate by the rotating motor. The telescopic rod 2851 is provided with an air inlet 2852 that is connected to a high-pressure air source, and an air blowing port 2853 that blows high-pressure airflow into the pipe.The 2854 internal welding slag cleaning brush rotates back and forth in small amplitudes in sync with the telescopic rod. Combined with the high-pressure airflow from the air nozzle 2853, it removes and cleans residual slag and burrs from the inner wall of the pipe. The telescopic rod is installed on a fixed base and drives the brush to rotate with a rotating motor. It has both telescopic insertion and rotation cleaning functions, allowing it to penetrate deep into the pipe to specifically clean hidden slag, deposits, and fine burrs that are difficult to handle with traditional equipment. It fills in blind spots in pipe slag removal. Employing a dual slag removal mode of high-pressure air blowing combined with a rotating brush, the brush mechanically peels away stubborn slag, while the high-pressure airflow blows away loose debris. The cleaning force is uniform, thoroughly removing slag without scratching the pipe's inner wall material, ensuring a smooth inner wall. The cleanliness is achieved through an adjustable telescopic rod that can extend and retract as needed to accommodate different pipe lengths. The structure is highly interconnected and automated, eliminating the need for manual pipe cleaning and significantly improving operational safety. The burr removal device 4 includes a slider fixing base 41, a third gear motor 42, a fourth gear motor 43, and a grinding and slag removal device 44. The slider fixing base 41 is slidably mounted on the slide rail 13. The third gear motor 42 is mounted on the slider fixing base 41 and meshes with the rack 14, driving the slider fixing base 41 to move axially along the pipe. The fourth gear motor 43 is mounted on the slider fixing base 41 and is connected to the grinding and slag removal device 44, driving the device to rotate around the pipe. The pipeline axis rotates; the grinding and slag removal device 44 is a ring structure, sleeved on the outside of the pipeline, used to grind and remove slag from the inner and outer walls of the pipeline cutting end, removing burrs and slag generated during cutting. An independent post-burr removal device is set up to perform secondary fine grinding and slag removal on the pipeline end after cutting and preliminary slag removal, forming a dual processing technology of "coarse slag removal + fine grinding," completely eliminating residual fine burrs and slag at the end. The processing accuracy far exceeds that of traditional single-stage slag removal equipment. A dual-gear motor realizes the axial movement of the device and the circumferential rotation of the grinding mechanism, which can adapt to the pipeline position and achieve 360° circumferential grinding. It is suitable for processing various round pipeline ends, has strong versatility, and features an overall sliding installation structure. The grinding station can be flexibly adjusted and can work in conjunction with the front-end laser cutting and slag removal mechanism to achieve automated assembly line processing and significantly improve overall processing efficiency. The grinding and slag removal device 44 includes a fixed connecting seat 441, an end gear plate 442, a welding slag collection shell 443, a gas connecting pipe 444, an air nozzle 445, and a grinding head 446. The fixed connecting seat 441 is connected to the fourth gear motor 43 for transmission, and the end gear plate 442 is fixedly connected to the fixed connecting seat 441. The welding slag collection shell 443 is an annular cover that is fitted on the outside of the end gear plate 442. The grinding head 446 is installed radially on the inner ring of the end gear plate 442 and rotates synchronously with the end gear plate 442 to grind the burrs on the inner and outer walls of the pipe cutting port.Gas connection pipe 444 is installed on slag collection shell 443. Air nozzle 445 is connected to gas connection pipe 444, blowing high-pressure airflow toward the pipe port to blow the welding slag generated during grinding into the slag collection shell 443. A transmission structure using an end-tooth disc to drive the grinding head rotation ensures high transmission stability and uniform rotation, guaranteeing consistent grinding force around the pipe port and avoiding uneven grinding and residual burrs. The port flatness is consistent. Integrating a high-pressure air blowing structure with an annular slag collection shell, loose waste slag is blown away in real time during grinding and uniformly collected inside the collection shell, achieving simultaneous grinding, slag removal, and slag collection. This prevents secondary adhesion of grinding waste slag to the pipe port. The annular nested structure offers good adaptability. This machine is powerful and adaptable to grinding operations on pipe ends with different outer diameters. It features a compact structure, does not occupy excessive processing space, and has a high degree of equipment integration. The grinding head 446 includes a filter cylinder 4461, a connector 4462, a grinding cylinder 4463, a pipe external welding slag cleaning brush 4464, and welding slag discharge holes 4465. The grinding cylinder 4463 is fixedly mounted on the inner ring of the end gear disc 442 via the connector 4462, and the filter cylinder 4461 is sleeved on the outside of the grinding cylinder 4463. The pipe external welding slag cleaning brush 4464 is located on the inner wall of the grinding cylinder 4463, and the welding slag discharge holes 4465 are evenly distributed on the filter cylinder 4461 and the grinding cylinder 4463. The grinding cylinder 4463 rotates with the end gear disc 442, grinding the pipe ends... During grinding, the welding slag produced enters the welding slag collection shell 443 through the welding slag discharge hole 4465. Simultaneously, the welding slag cleaning brush 4464 cleans the residual welding slag and burrs on the outer wall of the pipe. The composite structure of the grinding cylinder and the external cleaning brush allows for simultaneous grinding of the pipe end face and cleaning of fine residues on the outer wall, achieving integrated and refined slag removal at both the end and outer walls. This significantly improves the overall processing quality. The evenly distributed welding slag discharge holes quickly guide the fine waste slag produced during grinding into the collection shell, preventing waste slag accumulation in the grinding area and avoiding friction and scratches on the pipe surface, thus ensuring the quality of pipe processing. The combined structure of the filter cylinder and grinding cylinder provides simple filtration and barrier to prevent large particles from entering. Waste residue is returned to the processing area, simultaneously improving the stability of the grinding structure, extending the service life of the grinding head, and reducing equipment wear and tear costs. The pipe clamping seat 5 includes a self-locking sliding base 51, a self-locking sliding lifting guide roller 52, a two-way cylinder 53, and a clamping head 54. The self-locking sliding base 51 is slidably mounted on the slide rail 13, and can move along the pipe axis to achieve position self-locking. The self-locking sliding lifting guide roller 52 is mounted on the self-locking sliding base 51 to support the pipe and can adjust its height according to the pipe diameter. The two-way cylinder 53 is mounted on the self-locking sliding base 51, and its piston rod end is connected to the clamping head 54. The two-way cylinder 53 drives the clamping head 54 to simultaneously clamp the pipe from both sides, achieving centering and fixing of the pipe.

[0024] During operation, the pipe to be processed is placed on the self-locking sliding lifting guide roller 52 of the fixed crossbeam 11. The height of the self-locking sliding lifting guide roller 52 is adjusted according to the diameter of the pipe to ensure the pipe axis is aligned with the centerline of each processing module. The movable limit seat 6 slides along the slide rail 13 to the set position and locks, limiting and fixing the axial end of the pipe. The bidirectional cylinder 53 on the pipe clamping seat 5 is activated, driving the clamping heads 54 on both sides to move inward synchronously, clamping the pipe from both sides simultaneously, achieving precise automatic centering and secure fixing of the pipe. Each processing module, through its respective gear motor (first gear motor 23, third gear motor 42, etc.), meshes with the rack 14 on the fixed crossbeam 11, driving the laser cutting mechanism 2, deburring device 4, etc., to move axially along the slide rail 13 to the preset processing position. The first lead screw motor moving mechanism 281 within the laser cutting mechanism 2 is activated, driving the slide rail slider moving seat 282 to precisely adjust, so that the integrated laser cutting head 28 and... Each primary slag removal structure (bottom slag suction, outer ring slag suction, internal cleaning) is aligned with the pipe port to be cut, adapting to the current pipe diameter and wall thickness. Laser circumferential cutting: The second gear motor 24 drives the gear disk 25 to rotate, driving the laser cutting head 28 to rotate circumferentially around the outer wall of the pipe to perform laser cutting on the pipe. Local protection and smoke control: During the cutting process, the protective cover 27 wraps the cutting area, and the smoke extraction pipe 26, in conjunction with the external smoke extraction device 3, extracts the smoke and dust and splashing waste generated at the cutting point in real time. Bottom slag suction: The second screw motor moving structure 2831 drives the slag suction box 2832 to approach the pipe cutting port. The negative pressure device, through the air suction pipe interface 2833 and the horn mouth 2834, quickly and in real time sucks away the high-temperature molten slag and waste generated at the bottom of the port. Outer ring slag suction and cooling: The annular outer shell 2841 forms a sealed space by tightly adhering to the outer wall of the pipe with the sponge pad 2844. The water outlet pipe 2843 introduces cooling water into the welding slag collection chamber 2842 to wet the sponge pad and cool the high-temperature welding slag.The negative pressure device uses the suction pipe connection interface 2845 to uniformly suck up and clean the cooled and solidified welding slag and fumes. Pipe inner wall cleaning: After cutting, the rotating motor drives the telescopic rod 2851 to rotate and extend axially into the pipe. The inner wall cleaning brush 2854 at its front end rotates back and forth to brush away the slag adhering to the inner wall. Simultaneously, high-pressure gas introduced through the air inlet 2852 is ejected from the air outlet 2853 to blow away the detached molten slag and debris. Grinding device feeding: After laser cutting, the third gear motor 42 drives the slider fixing base 41 of the burr removal device 4 to move forward along the slide rail 13, so that the grinding and slag removal device 44 is fitted onto the outside of the cut pipe end for 360° circumferential grinding and cleaning. The fourth gear motor 43 drives the fixed connecting seat 441 and the end... As the toothed disc 442 rotates, the grinding head 446 on the inner ring of the end toothed disc 442 rotates synchronously. The grinding cylinder 4463 performs rotary grinding on the end face of the pipe port. Simultaneously, the external welding slag cleaning brush 4464 cleans the residual slag and fine burrs on the outer wall of the pipe. Dynamic slag blowing and collection: During grinding, the gas connection pipe 444 delivers high-pressure airflow to the air nozzle 445, blowing up the ground debris and burrs in real time. The waste slag is splashed through the welding slag discharge holes 4465 evenly distributed on the grinding cylinder and filter cylinder 4461 and is guided into the annular welding slag collection shell 443 for centralized collection, preventing secondary adhesion or scratching of the pipe surface. After the grinding process is completed, the burr removal device 4 and the laser cutting mechanism 2 perform a reset and retraction action.

[0025] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0026] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A laser pipe cutting machine with slag removal function, comprising a splicing base (1), a laser cutting mechanism (2), an external fume extraction device (3), a burr removal device (4), a pipe clamping seat (5), a movable limiting seat (6), a fixed crossbeam (11), lifting legs (12), a slide rail (13), and a rack (14), characterized in that: The splicing base (1) is the supporting base of the whole machine. The bottom is provided with the lifting leg (12) and the top is provided with the fixed crossbeam (11). The fixed crossbeam (11) is provided with the slide rail (13) and the rack (14). The laser cutting mechanism (2), external smoke extraction device (3), burr removal device (4), pipe clamp (5) and movable limiting seat (6) are arranged sequentially on the fixed crossbeam (11) along the pipe processing direction. The laser cutting mechanism (2), burr removal device (4), pipe clamp (5) and movable limiting seat (6) can slide along the slide rail (13) and achieve position driving and positioning through the rack (14). The pipe clamping seat (5) is used to clamp the pipe to be processed, the laser cutting mechanism (2) is used to cut the pipe, the external smoke extraction device (3) is used to extract the smoke and dust generated during the cutting process, the burr removal device (4) is used to remove burrs and residues from the pipe cutting port, and the movable limiting seat (6) is used to limit and fix the axial position of the pipe.

2. The laser tube cutting machine with slag removal function according to claim 1, characterized in that: The laser cutting mechanism (2) includes a fixed base (21), a slider (22), a first gear motor (23), a second gear motor (24), a gear disk (25), a chimney (26), a protective cover (27), and a laser cutting head (28). The fixed base (21) is slidably mounted on the slide rail (13) via the slider (22). The first gear motor (23) meshes with the rack (14) and drives the fixed base (21) to move axially along the slide rail (13). The second gear motor (24) is connected to the gear disk (25) for transmission. The laser cutting head (28) is mounted on the gear disk (25). The laser cutting head (28) rotates circumferentially with the gear disk (25). The chimney (26) is connected to the external smoke extraction device (3). The protective cover (27) covers the outside of the laser cutting head (28).

3. A laser tube cutting machine with slag removal function according to claim 2, characterized in that: The laser cutting head (28) is equipped with a first lead screw motor moving mechanism (281), a slide rail slider moving seat (282), a bottom slag suction structure (283), an outer ring slag suction structure (284), and a pipe internal cleaning mechanism (285). The first lead screw motor moving mechanism (281) drives the slide rail slider moving seat (282) to move. The slide rail slider moving seat (282) integrates the laser cutting head (28), the bottom slag suction structure (283), the outer ring slag suction structure (284), and the pipe internal cleaning mechanism (285). The bottom slag suction structure (283) is used to absorb the residue at the bottom of the pipe cutting port. The outer ring slag suction structure (284) is used to absorb the residue on the outer ring of the pipe cutting port. The pipe internal cleaning mechanism (285) is used to extend into the pipe to remove the residual molten slag and burrs on the inner wall after cutting.

4. A laser tube cutting machine with slag removal function according to claim 3, characterized in that: The bottom slag suction structure (283) includes a second lead screw motor moving structure (2831), a slag suction box (2832), an air suction pipe interface (2833), and a flared mouth (2834). The second lead screw motor moving structure (2831) is mounted on the slide rail slider moving seat (282). The slag suction box (2832) is driven by the second lead screw motor moving structure (2831) and can move closer to or further away from the pipe cutting port along the pipe radially. The air suction pipe interface (2833) is provided on the slag suction box (2832) for communicating with the negative pressure device. The flared mouth (2834) is provided at one end of the slag suction box (2832) facing the pipe. The flared mouth (2834) is aligned with the bottom of the pipe cutting port to collect the molten slag and dust generated during the cutting process.

5. A laser tube cutting machine with slag removal function according to claim 4, characterized in that: The outer ring slag suction structure (284) includes an outer shell (2841), a slag collection chamber (2842), a water outlet pipe (2843), a sponge pad (2844), and a suction pipe connection interface (2845). The outer shell (2841) is an annular structure. The slag collection chamber (2842) is located inside the outer shell (2841). The sponge pad (2844) is located on the side of the outer shell (2841) facing the pipe and is used to fit against the outer wall of the pipe to form a sealed space. The water outlet pipe (2843) is located inside the slag collection chamber (2842) and is used to introduce cooling water to cool and wet the sponge pad (2844) and collect the slag. The suction pipe connection interface (2845) is located at the bottom of the outer shell (2841) and is used to connect with a negative pressure device to suck away the cooled slag and fumes.

6. A laser tube cutting machine with slag removal function according to claim 5, characterized in that: The internal cleaning mechanism (285) of the pipeline includes a telescopic rod (2851), an air inlet (2852), an air blowing port (2853), a pipeline internal welding slag cleaning brush (2854), and a rotating motor that drives the telescopic rod (2851) to rotate. The telescopic rod (2851) is axially mounted on the fixed base (21) and can extend and retract along the pipeline axis and extend into the pipeline. The front end of the telescopic rod (2851) is provided with the pipeline internal welding slag cleaning brush (2854), and the rear end is connected to the rotating motor for transmission and is driven to rotate by the rotating motor. The telescopic rod (2851) is provided with an air inlet (2852) connected to a high-pressure air source and an air blowing port (2853) that blows high-pressure air into the pipeline. The pipeline internal welding slag cleaning brush (2854) rotates back and forth synchronously with the telescopic rod in a small amplitude, and works with the high-pressure air blown out by the air blowing port (2853) to brush away and clean the residual slag and burrs on the inner wall of the pipeline.

7. A laser tube cutting machine with slag removal function according to claim 6, characterized in that: The burr removal device (4) includes a slider fixing base (41), a third gear motor (42), a fourth gear motor (43), and a grinding and slag removal device (44). The slider fixing base (41) is slidably mounted on the slide rail (13). The third gear motor (42) is mounted on the slider fixing base (41) and meshes with the rack (14), driving the slider fixing base (41) to move along the pipeline axis. The fourth gear motor (43) is mounted on the slider fixing base (41) and is connected to the grinding and slag removal device (44) for transmission, driving the grinding and slag removal device (44) to rotate around the pipeline axis. The grinding and slag removal device (44) is a ring structure, sleeved on the outside of the pipeline, and is used to grind and remove slag from the inner and outer walls of the pipeline cutting port, removing burrs and slag generated during cutting.

8. A laser tube cutting machine with slag removal function according to claim 7, characterized in that: The grinding and slag removal device (44) includes a fixed connecting seat (441), an end gear disc (442), a slag collection shell (443), a gas connecting pipe (444), an air nozzle (445), and a grinding head (446); the fixed connecting seat (441) is connected to the fourth gear motor (43) for transmission, the end gear disc (442) is fixedly connected to the fixed connecting seat (441), and the slag collection shell (443) is an annular cover fitted onto the end gear disc (444). 42) Outer side; The grinding head (446) is radially mounted on the inner ring of the end toothed disc (442) and rotates synchronously with the end toothed disc (442) to grind the burrs on the inner and outer walls of the pipe cutting port; The gas connecting pipe (444) is mounted on the slag collection shell (443), and the air blowing nozzle (445) is connected to the gas connecting pipe (444) to blow high-pressure airflow toward the pipe port and blow the slag generated by grinding into the slag collection shell (443).

9. A laser tube cutting machine with slag removal function according to claim 8, characterized in that: The grinding head (446) includes a filter cylinder (4461), a connector (4462), a grinding cylinder (4463), a pipe external welding slag cleaning brush (4464), and a welding slag discharge hole (4465). The grinding cylinder (4463) is fixedly installed on the inner ring of the end gear plate (442) through the connector (4462), and the filter cylinder (4461) is sleeved on the outside of the grinding cylinder (4463). The pipe external welding slag cleaning brush (4464) is set on the inner ring of the end gear plate (442). The inner wall of the grinding cylinder (4463) is provided with the slag discharge holes (4465) evenly distributed on the filter cylinder (4461) and the grinding cylinder (4463); the grinding cylinder (4463) rotates with the end toothed disc (442) to grind the pipe port, and the slag generated by grinding can enter the slag collection shell (443) through the slag discharge holes (4465); the external slag cleaning brush (4464) of the pipe simultaneously cleans the slag and burrs remaining on the outer wall of the pipe.

10. A laser tube cutting machine with slag removal function according to claim 9, characterized in that: The pipe clamping seat (5) includes a self-locking sliding base (51), a self-locking sliding lifting guide roller (52), a two-way cylinder (53), and a clamping head (54). The self-locking sliding base (51) is slidably mounted on the slide rail (13) and can move along the pipe axis to achieve position self-locking. The self-locking sliding lifting guide roller (52) is mounted on the self-locking sliding base (51) to support the pipe and can adjust its height according to the pipe diameter. The two-way cylinder (53) is mounted on the self-locking sliding base (51), and its piston rod end is connected to the clamping head (54). The two-way cylinder (53) drives the clamping head (54) to clamp the pipe synchronously from both sides of the pipe to achieve the centering and fixing of the pipe.

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