Laser circular tube cutting machine with slag suction device

Abstract

The invention discloses a laser round pipe cutting machine with a slag suction device, and relates to the technical field of metal cutting machining equipment, the laser round pipe cutting machine comprises a device base, a multi-station clamping structure is arranged on the upper portion of one side of the device base, and an adjustable cutting structure is arranged on the side, close to the multi-station clamping structure, of the device base; a waste residue recycling structure is arranged on the side, close to the adjustable cutting structure, of the device base. The linkage mechanism is driven by the first servo motor through the clamping end, the clamping blocks are driven to be opened and closed synchronously, different pipe diameters are adapted, multi-station stable clamping is achieved, stable feeding is guaranteed through the auxiliary rolling wheels, and the machining stability is improved; the cutting end is subjected to multi-stage linkage and multi-dimensional adjustment, the laser head can be accurately aligned to the machining position, and the high-precision and complex cutting requirements are met; the waste residue recycling structure achieves automatic all-dimensional cleaning, waste residues are prevented from influencing machining, manual intervention is reduced, the equipment adaptability, machining precision and production continuity are greatly improved on the whole, and cost is reduced.

Description

Technical Field

[0001] This invention relates to the field of metal cutting and processing equipment technology, and in particular to a laser round tube cutting machine with a slag suction device. Background Technology

[0002] Existing laser metal tube cutting machines are specialized equipment for high-precision cutting of metal tube workpieces. They are widely used in machinery manufacturing, construction, and pipe processing. Their core structure mainly includes a machine base, a clamping and positioning mechanism, a laser cutting system, a feed drive device, and auxiliary structures. The clamping and positioning mechanism often uses a three-jaw chuck or multi-station fixture to achieve stable fixing and coaxial positioning of the metal tube. Some machines are equipped with auxiliary rollers that can rotate the metal tube to meet circumferential cutting requirements. The laser cutting system consists of a laser generator, a cutting head, and an optical path transmission assembly. It uses a focused laser beam to cut the metal tube... The tubes are melted or vaporized for cutting, precisely producing straight tubes, bevels, serrations, and irregular shapes. The feed drive device often uses a servo motor in conjunction with a lead screw and guide rail to achieve precise displacement of the cutting head or workpiece, ensuring dimensional accuracy. The auxiliary structure includes a cooling system, a slag suction device, and a dust removal device. The cooling system reduces the temperature of the cutting area, while the slag suction device and dust removal device clean up the molten slag and dust generated during cutting. Some mid-to-high-end equipment also integrates an automatic loading and unloading mechanism to improve production efficiency. The overall equipment features fast cutting speed, high precision, and smooth cuts, and is suitable for processing metal round tubes of different diameters and materials.

[0003] While existing laser metal tube cutting machines possess adaptive adjustment capabilities for different tube diameters and can accommodate various tube specifications, they generally suffer from a single processing station, making it difficult to achieve simultaneous multi-station cutting. These machines are mostly designed with a single cutting head and a single clamping station. During batch processing, the loading, positioning, cutting, and unloading of metal tubes must be completed one by one, making it impossible to process multiple tubes in parallel. Furthermore, switching between different cutting processes requires readjusting parameters, which is cumbersome and time-consuming. More importantly, in single-station processing mode, each metal tube requires individual positioning and calibration, and repeated positioning is prone to problems due to equipment thermal drift and manual operation. Factors such as deviations can cause misalignment between the metal tube and the laser head, leading to issues such as slanted cuts and excessive dimensional accuracy. In some scenarios, the repeated positioning error is too large. This design is particularly problematic in multi-specification, high-volume production, significantly reducing production efficiency and increasing scrap rates due to positioning deviations. Frequent process switching also prolongs equipment downtime and increases processing costs, making it difficult to meet the high-efficiency and precise production needs of modern manufacturing and negatively impacting user experience. To address the shortcomings of existing technologies, we propose a laser tube cutting machine with a slag suction device. Summary of the Invention

[0004] The main objective of this invention is to provide a laser round tube cutting machine with a slag suction device, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A laser round tube cutting machine with a slag suction device includes a device base, a multi-station clamping structure is provided on the upper part of one side of the device base, an adjustable cutting structure is provided on the side of the device base near the multi-station clamping structure, a waste slag recycling structure is provided on the side of the device base near the adjustable cutting structure, and an auxiliary rotation structure is provided in the middle of the multi-station clamping structure. The multi-station clamping structure includes a first servo motor disposed on one side of the device base. A first threaded rod is detachably mounted on the rotor of the first servo motor. A positioning bracket is disposed on the side of the first threaded rod away from the first servo motor. A first bevel gear is fixedly mounted on one end of the first threaded rod that passes through the positioning bracket. A second bevel gear is meshed with one side of the first bevel gear. A second threaded rod is fixedly mounted on the axis of one side of the second bevel gear. A first threaded block is threadedly connected to the outer wall of the second threaded rod. A first positioning frame is fixedly mounted on the upper part of one side of the first threaded block. A first limiting groove is opened in the middle of the first positioning frame. A second threaded block is threadedly connected to the outer wall of the first threaded rod. A third fixing rod is fixedly mounted on the lower side of the second threaded block. A limiting sleeve is slidably mounted on the outer wall of the third fixing rod. A movable roller is fixedly mounted on the upper side of the limiting sleeve.

[0006] Preferably, a third limiting block is rotatably mounted on the top of the movable roller, a fixing plate is fixedly mounted on the upper end of the device base near the second threaded block, a second limiting groove is opened in the middle of the fixing plate, a first sliding frame is provided on the upper side of the second limiting groove, a fifth limiting groove is opened in the middle of the first sliding frame, a clamping block is provided on the upper side of one side of the first sliding frame, a fourth limiting groove is opened in the lower part of the clamping block, a third limiting groove is opened on one side of the device base, and multiple sets of first connecting rods are hinged to the side of the first sliding frame near the device base. A rotating column is rotatably mounted at the hinge of two adjacent sets of first connecting rods, and a first limiting block is fixedly mounted on the top of each set of rotating columns.

[0007] Preferably, the first limiting block of each group slides inside the fourth limiting groove, the movable roller slides in the first limiting groove, the third limiting block slides in the fifth limiting groove, the first positioning frame and the third fixing rod are staggered, and multiple sets of clamping blocks are provided, which are mirror-symmetrically arranged with the middle part of the device base as the axis.

[0008] Preferably, the adjustable cutting structure includes a first synchronous pulley fixedly installed at the end of the second threaded rod away from the second bevel gear. The first synchronous pulley is driven by a transmission belt to install a second synchronous pulley. A rotating disk is fixedly installed at the center of one side of the second synchronous pulley. A first fixed column is fixedly installed on one side of the rotating disk. A second fixed column is fixedly installed at the lower part of the device base near the second synchronous pulley. A first swing rod is rotatably installed at the end of the second fixed column away from the device base. A second swing rod is rotatably installed at the end of the first swing rod away from the second fixed column. A sixth limiting groove is opened in the middle of the second swing rod. A seventh limiting groove is opened in the upper part of the second swing rod. A support frame is fixedly installed on the side of the device base near the seventh limiting groove. A movable frame is slidably installed at the upper end of the support frame. A movable slide rod is fixedly installed on one side of the movable frame.

[0009] Preferably, a second servo motor is provided at one end of the movable frame, a third threaded rod is detachably installed at the rotor of the second servo motor, a second limiting block is threadedly connected to the outer wall of the third threaded rod, a second positioning frame is fixedly installed at the end of the second limiting block away from the third threaded rod, a third servo motor is provided on one side of the second positioning frame, a fourth threaded rod is detachably installed at the rotor of the third servo motor, an eighth limiting groove is opened in the middle of the second positioning frame, a third threaded block is threadedly connected to the outer wall of the fourth threaded rod, an electric telescopic rod is provided on the lower side of the third threaded block, and a laser head is fixedly installed at the telescopic end of the electric telescopic rod.

[0010] Preferably, the first fixed column slides in the sixth limiting groove, the end of the movable slide rod away from the movable frame slides in the seventh limiting groove, the first fixed column is fixed on the side of the rotating disk that is off-center, and the third threaded rod and the second limiting block slide inside the movable frame.

[0011] Preferably, the waste residue recycling structure includes a first fixed rod fixedly installed on the axis of the second synchronous wheel away from the rotating disk. A first gear is fixedly installed at the end of the first fixed rod away from the second synchronous wheel. A transverse groove is opened in the middle of one side of the device base. A waste residue collection plate is slidably installed inside the transverse groove. A rack is provided at the lower part of the waste residue collection plate. Two sets of ninth limiting grooves are opened on the upper part of both sides of the device base near the transverse groove. A fourth servo motor is provided on one side of the device base. A fifth threaded rod is detachably installed at the rotor of the fourth servo motor. A second sliding frame is threadedly connected to the outer wall of the fifth threaded rod. A slag removal scraper is rotatably installed in the middle of the second sliding frame. A fifth servo motor is fixedly installed on the side of the device base near the waste residue collection plate. A third swing rod is detachably installed at the rotor of the fifth servo motor. A second connecting rod is rotatably installed at the end of the third swing rod away from the fifth servo motor. A fourth swing rod is rotatably installed at the end of the second connecting rod away from the third swing rod.

[0012] Preferably, the device base is provided with a material collection groove on one side near the fifth servo motor and the fourth swing rod, the fifth threaded rod rotates in the ninth limiting groove on one side, and a second fixed rod is fixedly installed in the ninth limiting groove on the other side. One end of the second sliding frame is slidably connected to the outer wall of the second fixed rod. The slag removal scraper is in contact with the outer wall of the waste slag collection plate, and the rack and the first gear are meshed with each other.

[0013] Preferably, the auxiliary rotation structure includes a sixth servo motor fixedly installed on one side of the two sets of clamping blocks, and an auxiliary roller can be detachably installed on the rotor of each set of the sixth servo motor.

[0014] Compared with the prior art, the present invention has the following beneficial effects: In this invention, a first servo motor drives a threaded rod and a bevel gear in linkage, which in turn drives multiple sets of mirror-symmetrical clamping blocks to open and close synchronously. The spacing can be flexibly adjusted to adapt to metal round tubes of different diameters without the need for manual disassembly and adjustment, greatly improving the equipment's adaptability to multiple specifications of pipes. Each limiting groove and linkage structure works together to ensure that the metal round tube is stably clamped in multiple positions, avoiding displacement during processing. At the same time, a sixth servo motor drives an auxiliary roller to rotate, which drives the metal round tube to rotate smoothly through friction, providing continuous and uniform rotary feed for cutting. This effectively ensures the consistency of the trajectory for circumferential cutting or bevel cutting, reducing processing deviations caused by unstable clamping and uneven feed from the source, and improving the quality stability of multiple batches of pipe processing.

[0015] In this invention, multi-level linkage and multi-dimensional adjustment significantly improve cutting accuracy and flexibility. Utilizing the transmission of the first and second synchronous wheels and the rotating disc, along with the linkage of the swing rod and the movable frame, precise adjustment of the cutting mechanism's lateral position is achieved. The second and third servo motors drive the threaded rods to slide related components. Combined with the height adjustment of the electric telescopic rod, the laser head can move flexibly in the lateral, longitudinal, and vertical directions, accurately aligning with processing positions for different pipe diameters and cutting requirements. The entire adjustment process is driven by servo motors, ensuring smooth transmission and precise positioning. This effectively solves the problems of cumbersome cutting position adjustments and large positioning deviations in traditional equipment, ensuring a smooth cut and accurate dimensions. It can meet the high-precision processing requirements of complex bevels and irregular contours, broadening the equipment's application scenarios.

[0016] In this invention, the waste residue recycling structure achieves automated and comprehensive cleaning and recycling of cutting waste residue, with significant results. Before cutting, the waste residue collection plate automatically slides to the bottom of the cutting area via gear and rack linkage to accurately collect the slag, preventing molten slag from scattering and contaminating the equipment or scratching the pipes. After cutting, the collection plate automatically resets, and the fourth servo motor drives the slag removal scraper to move smoothly and efficiently remove the waste residue attached to the surface of the collection plate. At the same time, the fifth servo motor, through a linkage, links the fourth swing rod to sweep the scattered waste residue into the collection trough. The entire waste residue treatment process requires no manual intervention, achieving automated cleaning. This not only ensures a clean environment in the cutting area and prevents waste residue from affecting the accuracy of subsequent processing, but also reduces the workload of manual cleaning and downtime, improves production continuity, and reduces labor and equipment maintenance costs. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the rotating disk structure of the present invention; Figure 3 This is a schematic diagram of the structure of the second limiting groove of the present invention; Figure 4 This is a schematic diagram of the structure of the first connecting rod of the present invention; Figure 5 This is a schematic diagram of the structure of the fourth limiting groove of the present invention; Figure 6 This is a schematic diagram of the structure of the first servo motor of the present invention; Figure 7 This is a schematic diagram of the structure of the fifth limiting groove of the present invention; Figure 8 This is a schematic diagram of the structure of the first bevel gear of the present invention; Figure 9 This is a schematic diagram of the structure of the first synchronous pulley of the present invention; Figure 10 This is a schematic diagram of the structure of the third threaded rod of the present invention; Figure 11 This is a schematic diagram of the structure of the second limiting block of the present invention; Figure 12 This is a schematic diagram of the transverse groove structure of the present invention; Figure 13 This is a schematic diagram of the slag removal scraper of the present invention; Figure 14 This is a schematic diagram of the structure of the fifth servo motor of the present invention; Figure 15 This is a schematic diagram of the auxiliary rotation structure of the present invention.

[0018] In the diagram: 1. Device base; 2. Multi-station clamping structure; 21. First servo motor; 22. First threaded rod; 23. Positioning bracket; 24. First bevel gear; 25. Second bevel gear; 26. Second threaded rod; 27. First threaded block; 28. First positioning frame; 29. ​​First limiting groove; 210. Second threaded block; 211. Third fixing rod; 212. Limiting sleeve; 213. Movable roller; 214. Third limiting block; 215. Fixing plate; 216. Second limiting groove; 217. First sliding frame; 218. First connecting rod; 219. Third limiting groove; 220. Rotating column; 221. First limiting block; 222. Clamping block; 223. Fourth limiting groove; 224. Fifth limiting groove; 3. Adjustable cutting structure; 31. First synchronous pulley; 32. Second synchronous pulley; 33. Rotating disc; 34. First fixed column; 35. Second fixed column; 36. First swing rod; 37. Second swing rod; 38. Sixth limiting groove; 39. Seventh limiting groove; 310. Movable slide rod; 311. Movable frame; 312. Support frame; 313. Second servo motor; 314. Third threaded rod; 315. Second limiting block; 316. Second positioning frame; 317. Third servo motor; 318. Eighth limiting groove; 319. Fourth threaded rod; 320. Third threaded block; 321. Electric telescopic rod; 322. Laser head; 4. Waste residue recycling structure; 41. First fixed rod; 42. First gear; 43. Horizontal groove; 44. Waste residue collection plate; 45. Rack; 46. Fourth servo motor; 47. Fifth threaded rod; 48. Ninth limiting groove; 49. Second fixed rod; 410. Second sliding frame; 411. Slag removal scraper; 412. Fifth servo motor; 413. Third swing rod; 414. Second connecting rod; 415. Fourth swing rod; 5. Auxiliary rotation structure; 51. Auxiliary roller; 52. Sixth servo motor. Detailed Implementation

[0019] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0020] Example 1, as Figures 1-8 As shown, when cutting a metal tube, the first servo motor 21 is started, driving the detachably connected first threaded rod 22 to rotate. The first threaded rod 22 passes through the positioning bracket 23 and drives the first bevel gear 24, which is fixed at one end, to rotate. The rotation of the first bevel gear 24 then drives the second bevel gear 25 to rotate, which in turn drives the second threaded rod 26 at the axis of the second bevel gear 25 to rotate synchronously. When the second threaded rod 26 rotates, the first threaded block 27, threaded to the outer wall, moves the upper first positioning bracket 28. The first limiting groove 29 in the middle of the first positioning bracket 28 provides guidance for subsequent linkage structures. Simultaneously, the second threaded block 210 on the outer wall of the first threaded rod 22 drives the lower third fixed rod 211 to move. The limiting sleeve 212 on the outer wall of the third fixed rod 211 moves with it, and the upper movable roller 213... Sliding along the first limiting groove 29, the third limiting block 214 at the top of the movable roller 213 is embedded in the fifth limiting groove 224 of the first sliding frame 217, pushing the first sliding frame 217 to slide along the second limiting groove 216 inside the fixed plate 215. When the first sliding frame 217 slides with the fixed plate 215 in the second limiting groove 216, the first connecting rod 218 is stretched outward. Multiple sets of first connecting rods 218 hinged on one side of the first sliding frame 217 are linked by the rotating column 220 at the hinge. The first limiting block 221 at the top of the rotating column slides along the fourth limiting groove 223 at the bottom of the clamping block 222, driving multiple sets of mirror-symmetrical clamping blocks 222 to unfold synchronously. This is used to adjust the distance between two adjacent clamping blocks 222, and to adjust the clamping of materials such as metal round tubes of different sizes. With the guidance of the third limiting groove 219 on one side of the device base 1, the metal round tube is stably clamped in multiple positions. After the multi-station clamping structure 2 completes the clamping of the metal tube, the sixth servo motor 52 on the opposite side of the two sets of clamping blocks 222 is started. It drives the detachable auxiliary roller 51 to rotate. The auxiliary roller is in close contact with the outer wall of the metal tube. Through friction, the metal tube rotates smoothly, providing continuous and uniform rotational feed for laser cutting and ensuring the consistency of the trajectory of circumferential cutting or bevel cutting.

[0021] Example 2, as Figures 9-11As shown, when the first servo motor 21 drives the first threaded rod 22 to rotate, the first threaded rod 22 then drives the first bevel gear 24 to rotate, and the meshing of the first bevel gear 24 and the second bevel gear 25 drives the first threaded block 27 to rotate. This enables the first synchronous pulley 31, which is fixed to the end of the second threaded rod 26 away from the second bevel gear 25, to rotate synchronously. The transmission belt of the first synchronous pulley 31 drives the second synchronous pulley 32 to rotate, which in turn drives the rotating disk 33 at the axis of the second synchronous pulley 32 to rotate. The first fixed post 34, which is off-center from the center of the rotating disk 33, is embedded in the sixth limiting groove 38 of the second swing rod 37, pushing the second swing rod 37 to swing around the second fixed post 35 as the fulcrum. The second fixed post 35 is fixed to the device base 1, and one end is rotatably connected to the first swing rod 36. The other end of the first swing rod 36 is rotatably connected to the second swing rod 37. The seventh limiting groove 39 on the upper part of the second swing rod 37 cooperates with the movable slide rod 310 on one side of the movable frame 311, pushing the movable frame 311 to slide along the support frame 312 to adjust its lateral position. The second servo motor 313 at one end of the movable frame 311 is started, which drives the third threaded rod 314 to rotate, causing the second limiting block 315 on the outer wall to slide along the inside of the movable frame 311, thereby pushing the second positioning frame 316 to move. The third servo motor 317 on one side of the second positioning frame 316 drives the fourth threaded rod 319 to rotate, causing the third threaded block 320 on the outer wall to slide along the eighth limiting groove 318. Finally, the height and longitudinal position of the laser head 322 are adjusted by the electric telescopic rod 321 on the lower side to achieve precise cutting of the metal tube.

[0022] Example 3, as Figures 12-14 As shown, before cutting, a first fixed rod 41, fixed to the axis on the side of the second synchronous wheel 32 away from the rotating disk 33, rotates, driving the first gear 42 at one end to mesh with the rack 45 at the bottom of the waste slag collection plate 44. This drives the waste slag collection plate 44 to slide along the transverse groove 43 of the device base 1 to collect slag below the cutting area. After cutting, the metal tube is removed. The reverse rotation of the first servo motor 21 drives the first fixed rod 41 to rotate synchronously in the opposite direction, thereby resetting the waste slag collection plate 44. After the waste slag collection plate 44 is reset, the fourth servo motor 46 is started, which drives the fifth threaded rod 47. Rotating along the ninth limiting groove 48 on one side, the second sliding frame 410 on the outer wall moves. One end of the second sliding frame 410 is slidably connected to the second fixed rod 49 in the ninth limiting groove 48 on the other side to ensure smooth movement. The slag scraper 411 in the middle of the second sliding frame 410 contacts the outer wall of the waste slag collection plate 44 to scrape off the waste slag attached to the surface. At the same time, the fifth servo motor 412 is started, which drives the third swing rod 413 to rotate. Through the second connecting rod 414, the fourth swing rod 415 is linked to sweep the scattered waste slag into the collection troughs on both sides of the device base, realizing the comprehensive recycling of waste slag and cleaning of the cutting area.

[0023] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A laser round tube cutting machine with a slag suction device, comprising a device base (1), characterized in that: A multi-station clamping structure (2) is provided on the upper part of one side of the device base (1), an adjustable cutting structure (3) is provided on the side of the device base (1) near the multi-station clamping structure (2), a waste recycling structure (4) is provided on the side of the device base (1) near the adjustable cutting structure (3), and an auxiliary rotation structure (5) is provided in the middle of the multi-station clamping structure (2). The multi-station clamping structure (2) includes a first servo motor (21) disposed on one side of the device base (1). A first threaded rod (22) is detachably installed on the rotor of the first servo motor (21). A positioning bracket (23) is provided on the side of the first threaded rod (22) away from the first servo motor (21). A first bevel gear (24) is fixedly installed at one end of the first threaded rod (22) that passes through the positioning bracket (23). A second bevel gear (25) is meshed with one side of the first bevel gear (24). A second threaded rod (26) is fixedly installed at the axis of one side of the second bevel gear (25). The outer wall of the second threaded rod (26) is threadedly connected to a first threaded block (27). A first positioning frame (28) is fixedly installed on the upper side of one side of the first threaded block (27). A first limiting groove (29) is opened in the middle of the first positioning frame (28). The outer wall of the first threaded rod (22) is threadedly connected to a second threaded block (210). A third fixing rod (211) is fixedly installed on the lower side of the second threaded block (210). A limiting sleeve (212) is slidably installed on the outer wall of the third fixing rod (211). A movable roller (213) is fixedly installed on the upper side of the limiting sleeve (212).

2. The laser round tube cutting machine with a slag suction device according to claim 1, characterized in that: A third limiting block (214) is rotatably mounted on the top of the movable roller (213). A fixing plate (215) is fixedly mounted on the upper end of the device base (1) near the second threaded block (210). A second limiting groove (216) is opened in the middle of the fixing plate (215). A first sliding frame (217) is provided on one side of the upper part of the second limiting groove (216). A fifth limiting groove (224) is opened in the middle of the first sliding frame (217). On one side of the first sliding frame (217) The device is provided with a clamping block (222), and a fourth limiting groove (223) is provided at the lower part of the clamping block (222). A third limiting groove (219) is provided on one side of the device base (1). The first sliding frame (217) is hinged to a plurality of first connecting rods (218) on the side near the device base (1). A rotating column (220) is rotatably installed at the hinge of two adjacent sets of first connecting rods (218). A first limiting block (221) is fixedly installed at the top of each set of rotating columns (220).

3. A laser round tube cutting machine with a slag suction device according to claim 2, characterized in that: Each set of first limiting blocks (221) slides inside the fourth limiting groove (223), the movable roller (213) slides inside the first limiting groove (29), the third limiting block (214) slides in the fifth limiting groove (224), the first positioning frame (28) and the third fixing rod (211) are staggered, and multiple sets of clamping blocks (222) are provided, and are mirror-symmetrically arranged with the middle part of the device base (1) as the axis.

4. A laser round tube cutting machine with a slag suction device according to claim 1, characterized in that: The adjustable cutting structure (3) includes a first synchronous pulley (31) fixedly installed on the end of the second threaded rod (26) away from the second bevel gear (25). The first synchronous pulley (31) is connected to a second synchronous pulley (32) via a transmission belt. A rotating disk (33) is fixedly installed at the center of one side of the second synchronous pulley (32). A first fixing column (34) is fixedly installed on one side of the rotating disk (33). A second fixing column (35) is fixedly installed on the lower part of the device base (1) near the second synchronous pulley (32). The second fixing column (35) is located away from the device base (1). A first swing rod (36) is rotatably mounted at one end, and a second swing rod (37) is rotatably mounted at the end of the first swing rod (36) away from the second fixed column (35). A sixth limiting groove (38) is provided in the middle of the second swing rod (37), and a seventh limiting groove (39) is provided in the upper part of the second swing rod (37). A support frame (312) is fixedly mounted on the side of the device base (1) near the seventh limiting groove (39). A movable frame (311) is slidably mounted on the upper end of the support frame (312), and a movable slide rod (310) is fixedly mounted on one side of the movable frame (311).

5. A laser round tube cutting machine with a slag suction device according to claim 4, characterized in that: A second servo motor (313) is provided at one end of the movable frame (311). A third threaded rod (314) is detachably installed at the rotor of the second servo motor (313). A second limiting block (315) is threadedly connected to the outer wall of the third threaded rod (314). A second positioning frame (316) is fixedly installed at the end of the second limiting block (315) away from the third threaded rod (314). A third servo motor (317) is provided on one side of the second positioning frame (316). A fourth threaded rod (319) is detachably installed at the rotor of the third servo motor (317). An eighth limiting groove (318) is opened in the middle of the second positioning frame (316). A third threaded block (320) is threadedly connected to the outer wall of the fourth threaded rod (319). An electric telescopic rod (321) is provided on the lower side of the third threaded block (320). A laser head (322) is fixedly installed at the telescopic end of the electric telescopic rod (321).

6. A laser round tube cutting machine with a slag suction device according to claim 5, characterized in that: The first fixed column (34) slides in the sixth limiting groove (38), the end of the movable slide rod (310) away from the movable frame (311) slides in the seventh limiting groove (39), the first fixed column (34) is fixed on the side of the rotating disk (33) that is off-center, and the third threaded rod (314) and the second limiting block (315) slide inside the movable frame (311).

7. A laser round tube cutting machine with a slag suction device according to claim 4, characterized in that: The waste residue recycling structure (4) includes a first fixed rod (41) fixedly installed on the axis of the second synchronous wheel (32) away from the rotating disk (33). A first gear (42) is fixedly installed at one end of the first fixed rod (41) away from the second synchronous wheel (32). A transverse groove (43) is opened in the middle of one side of the device base (1). A waste residue collection plate (44) is slidably installed inside the transverse groove (43). A rack (45) is provided at the lower part of the waste residue collection plate (44). Two sets of ninth limiting grooves (48) are opened on the upper part of both sides of the device base (1) near the transverse groove (43). A fourth servo motor (46) is provided on one side of the device base (1). A fifth threaded rod (47) is detachably installed at the rotor of the device. The outer wall of the fifth threaded rod (47) is threadedly connected to a second sliding frame (410). A slag scraper (411) is rotatably installed in the middle of the second sliding frame (410). A fifth servo motor (412) is fixedly installed on the side of the device base (1) near the waste slag collection plate (44). A third swing rod (413) is detachably installed at the rotor of the fifth servo motor (412). A second connecting rod (414) is rotatably installed at the end of the third swing rod (413) away from the fifth servo motor (412). A fourth swing rod (415) is rotatably installed at the end of the second connecting rod (414) away from the third swing rod (413).

8. A laser round tube cutting machine with a slag suction device according to claim 7, characterized in that: The device base (1) has a material collection groove on one side near the fifth servo motor (412) and the fourth swing rod (415). The fifth threaded rod (47) rotates in the ninth limiting groove (48) on one side, and the second fixed rod (49) is fixedly installed in the ninth limiting groove (48) on the other side. One end of the second sliding frame (410) is slidably connected to the outer wall of the second fixed rod (49). The slag scraper (411) contacts the outer wall of the waste slag collection plate (44). The rack (45) meshes with the first gear (42).

9. A laser round tube cutting machine with a slag suction device according to claim 1, characterized in that: The auxiliary rotation structure (5) includes a sixth servo motor (52) fixedly installed on one side of the two sets of clamping blocks (222), and an auxiliary roller (51) can be detachably installed on the rotor of each set of the sixth servo motor (52).

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