A laser pipe cutting machine for cutting heavy pipes

Abstract

This utility model discloses a laser pipe cutting machine for cutting heavy-duty pipes, relating to the field of laser cutting technology. It includes a machine bed, on which a center-of-gravity adjustment mechanism and a gantry-type cutting mechanism are installed. The center-of-gravity adjustment mechanism includes a first chuck mechanism. A first guide rail is installed on the top wall of the machine bed, a second guide rail is installed on the right side wall of the machine bed, and a first rack is also installed on the right side wall of the machine bed. In this laser pipe cutting machine for cutting heavy-duty pipes, the first and third guide rails are positioned on a horizontal plane, and the second guide rail is positioned on a vertical plane. The third guide rail has the smallest height and is closest to the center of gravity of the chuck, resulting in better torque. This provides better support and force distribution for the first and second chuck mechanisms and the pipe, thus overcoming the problem of excessive outward displacement of the chuck's center of gravity in the original side-mounted structure, which results in insufficient support for cutting large pipes.

Description

Technical Field

[0001] This utility model relates to the field of laser cutting technology, specifically a laser pipe cutting machine for cutting heavy pipes. Background Technology

[0002] A side-mounted laser tube cutting machine is a specialized laser processing equipment for cutting tubes. Its core design involves mounting the laser cutting head on the motion axis in a "side-mounted" manner. Existing side-mounted laser tube cutting machines have a vertical bed structure with several guide rails installed on the vertical surface of the bed. The chuck slides on these guide rails for movement (see patent CN114654114A). In existing side-mounted laser tube cutting machines, the chuck clamps the tube and moves it along the guide rails. The guide rails simultaneously support both the chuck and the tube. Because the guide rails are all installed on the vertical surface of the bed and are located on the side of the chuck, their distance from the chuck's center of gravity is relatively large. When processing large tubes, as the tube diameter increases, the chuck also needs to be enlarged accordingly. If the original side-mounted structure is used, the chuck's center of gravity shifts too far outward, resulting in insufficient support for cutting large tubes.

[0003] Furthermore, in existing technologies, when a laser head cuts a pipe, the pipe needs to move back and forth horizontally to cooperate with the laser head for cutting. A rear chuck is required to hold the pipe and move it back and forth while cutting. When processing large pipes, due to the excessive weight of the pipe, the rear chuck is difficult to brake due to the excessive inertia of the pipe during the back and forth movement. The pipe's movement is prone to exceed the predetermined distance, resulting in positional deviation and affecting the processing accuracy.

[0004] To address these issues, this invention provides a laser pipe cutting machine for cutting heavy-duty pipes. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a laser pipe cutting machine for cutting heavy-duty pipes, thus solving the aforementioned problems.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: a laser tube cutting machine for cutting heavy pipes, including a bed, wherein the bed is provided with a center of gravity adjustment mechanism and a gantry cutting mechanism;

[0007] The center of gravity adjustment mechanism includes a first chuck mechanism, a first guide rail is provided on the top wall of the bed, a second guide rail is provided on the right side wall of the bed, and a first rack is also provided on the right side wall of the bed. The height of the first rack is greater than the height of the second guide rail, and the first chuck mechanism is located on the rear side of the bed.

[0008] Preferably, a first support seat is provided on the right side of the bed, the height of the first support seat is less than the height of the second guide rail, a third guide rail is provided on the top wall of the first support seat, the first chuck mechanism includes a rear chuck mounting seat, the rear chuck mounting seat is integrally cast and has good rigidity, a feeding chuck is installed on the rear chuck mounting seat for holding the tail end of the pipe for movement and cutting, a first motor seat is installed on the left side of the rear chuck mounting seat, a first servo motor assembly is provided on the first motor seat, a first gear is fixedly connected to the output end of the first servo motor assembly, the first gear extends to the lower part of the first motor seat, the first gear meshes with the first rack of the bed, the first servo motor assembly drives the first gear to move along the first rack, thereby driving the first chuck mechanism to move horizontally on the bed.

[0009] Preferably, a plurality of first sliders are fixedly connected to the lower side of the first motor base, and the first sliders are slidably connected to the first guide rail. A plurality of second sliders are fixedly connected to the left side wall of the rear chuck mounting base, and the second sliders are slidably connected to the second guide rail. A plurality of third sliders are fixedly connected to the bottom end of the rear chuck mounting base, and the third sliders are slidably connected to the third guide rail.

[0010] Preferably, a second chuck mechanism is provided at both the middle and front end of the bed. The second chuck mechanism includes a second chuck mounting base, which is integrally cast. A clamping chuck is fixedly connected inside the second chuck mounting base. A second motor base is fixedly connected to the left side of the second chuck mounting base. A second servo motor assembly is fixedly connected to the second motor base. A third gear is fixedly connected to the output shaft of the second servo motor assembly. The third gear extends to the lower end of the second motor base and meshes with a first rack of the bed. Several fourth sliders are fixedly connected to the lower end of the second motor base. The fourth sliders are slidably connected to a first guide rail. Several fifth sliders are fixedly connected to the left side wall of the second chuck mounting base. The fifth sliders are slidably connected to the second guide rail. Several sixth sliders are fixedly connected to the bottom end of the second chuck mounting base. The sixth sliders are slidably connected to the third guide rail. A feed port and a discharge port are respectively provided at the rear and front of the second chuck mounting base for the pipe to pass through the second chuck mounting base and be clamped by the clamping chuck.

[0011] Preferably, the gantry cutting mechanism is located in the middle of the bed. The gantry cutting mechanism includes a first column and a second column. The first column is fixedly connected to the top of the bed, and the second column is fixedly connected to the right side of the bed. A crossbeam is fixedly connected between the first column and the second column. The top of the crossbeam is provided with two fourth guide rails and a second rack. A cantilever is fixedly connected to the upper part of the crossbeam, and the cantilever extends to the front of the crossbeam.

[0012] Preferably, the lower part of the cantilever is provided with a plurality of movable sliders, which are slidably connected to the fourth guide rail. The cantilever is provided with a third servo motor group, and the output end of the third servo motor group is fixedly connected to a second gear. The second gear extends to the lower end of the cantilever and meshes with the second rack. The third servo motor group drives the second gear to move along the second rack, thereby driving the cantilever to move horizontally in the left and right directions on the crossbeam.

[0013] Preferably, two horizontal fifth guide rails are installed on the right side wall of the cantilever, and a first lead screw is rotatably connected to the right side wall of the cantilever. The first lead screw is disposed between the two fifth guide rails. A fourth servo motor group is disposed on one side of the first lead screw, and the output end of the fourth servo motor group is fixedly connected to the first lead screw. A sliding seat is disposed on the right side of the cantilever, and a plurality of seventh sliders are fixedly connected to the inner side of the sliding seat. The seventh sliders are slidably connected to the fifth guide rails, and the sliding seat is fixedly connected to the lead screw nut seat of the first lead screw.

[0014] Preferably, two vertically oriented eighth guide rails are fixedly connected to the right side wall of the sliding seat, and a second lead screw is rotatably connected to the right side wall of the sliding seat. The second lead screw is disposed between the two eighth guide rails. A fifth servo motor assembly is disposed at the upper end of the sliding seat, and the output end of the fifth servo motor assembly is rotatably connected to the second lead screw. A sliding arm is disposed on the right side of the sliding seat, and a plurality of ninth sliders are fixedly connected to the inner side of the sliding arm. The ninth sliders are slidably connected to the two eighth guide rails. The lead screw nut is fixedly connected to the sliding arm, and a laser head is disposed at the lower part of the sliding arm.

[0015] Preferably, a second support seat is provided on the left side of the bed, and several reinforcing ribs are fixedly connected between the second support seat and the bed. A reinforcing beam is fixedly connected to the left side of the second column to improve the integration of the gantry cutting mechanism and the bed. The reinforcing beam is fixedly connected to the first support seat. A power supply is provided on the second support seat. The reinforcing ribs can make the bed lighter while ensuring the overall rigidity and stability of the bed. They can also balance the rightward pulling force on the bed generated by the rear chuck, middle chuck, front chuck and large pipes, and reduce the tilting angle of the bed.

[0016] Beneficial effects

[0017] This invention provides a laser tube cutting machine for cutting heavy-duty pipes. Compared with the prior art, it has the following advantages:

[0018] (1) A laser tube cutting machine for cutting heavy pipes. The product sets the first guide rail and the third guide rail on the horizontal plane and the second guide rail on the vertical plane. The third guide rail has the smallest height and is closest to the center of gravity of the chuck, resulting in better torque. It can provide better support and force for the first chuck mechanism, the second chuck mechanism and the pipe, thereby overcoming the problem that the center of gravity of the chuck in the original side-mounted structure is too far outward and the support capacity for cutting large pipes is insufficient.

[0019] (2) A laser pipe cutting machine for cutting heavy pipes, which enables the laser head to move in six directions to cut the pipe through a gantry-type cutting mechanism, especially to move back and forth; when the pipe moves to the position of the laser head, the laser head moves back and forth during the cutting process, instead of the method of the rear chuck holding the pipe while moving and cutting; during the cutting process, the chuck only needs to hold the pipe and rotate, and the laser head moves back and forth to cut. The rear second chuck mechanism does not need to hold the pipe and move back and forth repeatedly during the cutting process. Therefore, it can overcome the problem that large pipes are heavy and it is not easy to brake when they are held horizontally by the rear second chuck mechanism during the processing, and the movement is easy to exceed the predetermined distance, which affects the processing accuracy. Attached Figure Description

[0020] Figure 1 This is a side view of the overall device structure of this utility model;

[0021] Figure 2 This is a structural diagram of the overall device of this utility model;

[0022] Figure 3 This is a side view of the internal structure of the overall device structure of this utility model;

[0023] Figure 4 This is an internal structural diagram of the overall device structure of this utility model;

[0024] Figure 5 This is a side view of the power supply structure of this utility model;

[0025] Figure 6 This is a side view of the first chuck mechanism structure of this utility model;

[0026] Figure 7 This is a side view of the second chuck mechanism structure of this utility model;

[0027] Figure 8 This is the utility model Figure 3 Partial side view of structure A;

[0028] Figure 9 This is the utility model Figure 4 Partial side view of structure B;

[0029] Figure 10 This is the utility model Figure 5 A partial side view of the C-structure.

[0030] In the picture: 1. Bed frame;

[0031] Center of gravity adjustment mechanism: 21. First guide rail; 22. Second guide rail; 23. First rack; 24. First support base; 25. Third guide rail; 26. First chuck mechanism; 261. Rear chuck mounting base; 262. Feed chuck; 263. First motor base; 264. First servo motor assembly; 265. First gear; 266. First slider; 267. Second slider; 268. Third slider; 27. Second chuck mechanism; 271. Fourth slider; 272. Fifth slider; 273. Sixth slider; 274. Clamping chuck; 275. Second servo motor assembly; 276. Third gear; 277. Second chuck mounting base; 278. Second motor base;

[0032] Gantry cutting mechanism: 31. First column; 32. Second column; 33. Crossbeam; 34. Fourth guide rail; 35. Second rack; 36. Cantilever; 37. Third servo motor assembly; 38. Fifth guide rail; 39. First lead screw; 391. Fourth servo motor assembly; 392. Sliding seat; 393. Seventh slider; 394. Eighth guide rail; 395. Second lead screw; 396. Fifth servo motor assembly; 397. Sliding arm; 398. Ninth slider; 399. Laser head;

[0033] 4. Reinforcing beam; 5. Second support base; 6. Reinforcing rib; 7. Power supply. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] Example 1:

[0036] Please see Figure 1-10 A laser tube cutting machine for cutting heavy pipes includes a bed 1, on which a center of gravity adjustment mechanism and a gantry cutting mechanism are provided;

[0037] The center of gravity adjustment mechanism includes a first chuck mechanism 26, a first guide rail 21 is provided on the top wall of the bed 1, a second guide rail 22 is provided on the right side wall of the bed 1, and a first rack 23 is also provided on the right side wall of the bed 1. The height of the first rack 23 is greater than the height of the second guide rail 22. The first chuck mechanism 26 is located on the rear side of the bed 1.

[0038] A first support seat 24 is provided on the right side of the bed 1. The height of the first support seat 24 is less than the height of the second guide rail 22. A third guide rail 25 is provided on the top wall of the first support seat 24. The first chuck mechanism 26 includes a rear chuck mounting seat 261, which is integrally cast. A feeding chuck 262 is mounted on the rear chuck mounting seat 261. A first motor seat 263 is mounted on the left side of the rear chuck mounting seat 261. A first servo motor assembly 264 is provided on the first motor seat 263. A first gear 265 is fixedly connected to the output end of the first servo motor assembly 264. The first gear 265 extends to the lower part of the first motor seat 263 and meshes with the first rack 23 of the bed 1.

[0039] A plurality of first sliders 266 are fixedly connected to the lower side of the first motor base 263. The first sliders 266 are slidably connected to the first guide rail 21. A plurality of second sliders 267 are fixedly connected to the left side wall of the rear chuck mounting base 261. The second sliders 267 are slidably connected to the second guide rail 22. A plurality of third sliders 268 are fixedly connected to the bottom end of the rear chuck mounting base 261. The third sliders 268 are slidably connected to the third guide rail 25.

[0040] A second chuck mechanism 27 is provided at both the middle and front ends of the bed 1. The second chuck mechanism 27 includes a second chuck mounting base 277, which is integrally cast. A clamping chuck 274 is fixedly connected inside the second chuck mounting base 277. A second motor base 278 is fixedly connected to the left side of the second chuck mounting base 277. A second servo motor assembly 275 is fixedly connected to the second motor base 278. A third gear 276 is fixedly connected to the output shaft of the second servo motor assembly 275. The third gear 276 extends to the lower end of the second motor base 278. 276 is meshed with the first rack 23 of the bed 1. Several fourth sliders 271 are fixedly connected to the lower end of the second motor base 278. The fourth sliders 271 are slidably connected to the first guide rail 21. Several fifth sliders 272 are fixedly connected to the left side wall of the second chuck mounting base 277. The fifth sliders 272 are slidably connected to the second guide rail 22. Several sixth sliders 273 are fixedly connected to the bottom end of the second chuck mounting base 277. The sixth sliders 273 are slidably connected to the third guide rail 25. The rear and front parts of the second chuck mounting base 277 are respectively provided with a feed port and a discharge port.

[0041] The gantry-type cutting mechanism is located in the middle of the bed 1. The gantry-type cutting mechanism includes a first column 31 and a second column 32. The first column 31 is fixedly connected to the top of the bed 1, and the second column 32 is fixedly connected to the right side of the bed 1. A crossbeam 33 is fixedly connected between the first column 31 and the second column 32. The top of the crossbeam 33 is provided with two fourth guide rails 34 and a second rack 35. A cantilever 36 is fixedly connected to the upper part of the crossbeam 33, and the cantilever 36 extends to the front of the crossbeam 33.

[0042] The lower part of the cantilever 36 is provided with several movable sliders, which are slidably connected to the fourth guide rail 34. The interior of the cantilever 36 is provided with a third servo motor group 37, and the output end of the third servo motor group 37 is fixedly connected to a second gear. The second gear extends to the lower end of the cantilever 36 and meshes with the second rack 35.

[0043] Two horizontal fifth guide rails 38 are installed on the right side wall of the cantilever 36. A first lead screw 39 is rotatably connected to the right side wall of the cantilever 36. The first lead screw 39 is located between the two fifth guide rails 38. A fourth servo motor group 391 is provided on one side of the first lead screw 39. The output end of the fourth servo motor group 391 is fixedly connected to the first lead screw 39. A sliding seat 392 is provided on the right side of the cantilever 36. Several seventh sliders 393 are fixedly connected to the inner side of the sliding seat 392. The seventh sliders 393 are slidably connected to the fifth guide rails 38. The sliding seat 392 is fixedly connected to the lead screw nut of the first lead screw 39.

[0044] Two vertical eighth guide rails 394 are fixedly connected to the right side wall of the sliding seat 392. A second lead screw 395 is rotatably connected to the right side wall of the sliding seat 392 and is positioned between the two eighth guide rails 394. A fifth servo motor group 396 is provided at the upper end of the sliding seat 392. The output end of the fifth servo motor group 396 is rotatably connected to the second lead screw 395. A sliding arm 397 is provided on the right side of the sliding seat 392. Several ninth sliders 398 are fixedly connected to the inner side of the sliding arm 397 and are slidably connected to the two eighth guide rails 394. The lead screw nut of the second lead screw 395 is fixedly connected to the sliding arm 397. A laser head 399 is provided at the lower part of the sliding arm 397.

[0045] A second support seat 5 is provided on the left side of the bed 1. Several reinforcing ribs 6 are fixedly connected between the second support seat 5 and the bed 1. A reinforcing beam 4 is fixedly connected to the left side of the second column 32. The reinforcing beam 4 is fixedly connected to the first support seat 24. A power supply 7 is provided on the second support seat 5.

[0046] Working process: The feeding chuck 262 in the first chuck mechanism 26 is used to clamp the pipe and push the pipe through the clamping chuck 274 of the second chuck mechanism 27. The second chuck mechanism 27 is used to clamp the pipe and rotate it, and the laser head 399 cuts the pipe. After the cutting is completed, the front second chuck mechanism 27 works with the second chuck mechanism 27 to remove the pipe for unloading. The first chuck mechanism 26 continues to push the pipe forward for processing.

[0047] Furthermore, during the cutting process, the tube will gradually move forward, and the first chuck mechanism 26 cannot always hold the tube. The end of the tube away from the first chuck mechanism 26 can be clamped by the front second chuck mechanism 27. The middle second chuck mechanism 27 and the front second chuck mechanism 27 cooperate to clamp the tube and rotate it, so that the laser head 399 cuts the tube. The first chuck mechanism 26 can be reset to prepare for the next feeding process.

[0048] By activating the third servo motor group 37, which drives the second gear and engages with the second rack 35, the moving slider moves along the fourth guide rail 34, thereby adjusting the movement of the laser head 399. Then, the fourth servo motor group 391 drives the first lead screw 39 to rotate, causing the sliding seat 392 to slide along the fifth guide rail 38 via the seventh slider 393, thereby moving the laser head 399.

[0049] The first guide rail 21 and the third guide rail 25 are set on the horizontal plane, and the second guide rail 22 is set on the vertical plane. The third guide rail 25 has the smallest height and is closest to the center of gravity of the first chuck mechanism 26 and the second chuck mechanism 27, resulting in better torque. It can provide better support and force for the first chuck mechanism 26, the second chuck mechanism 27 and the pipe, thereby overcoming the problem that the center of gravity of the chuck in the original side-mounted structure is too far outward, resulting in insufficient support for cutting large pipes.

[0050] The laser head 399 can move in six directions to cut the tube, especially by moving back and forth. When the tube moves to the position of the laser head 399, the laser head 399 moves back and forth during the cutting process, replacing the method of the rear chuck holding the tube while moving and cutting. During the cutting process, the clamping chuck 274 only needs to hold the tube and rotate it, while the laser head 399 moves back and forth to cut. The rear second chuck mechanism 27 does not need to hold the tube and move back and forth repeatedly during the cutting process. Therefore, it can overcome the problem that it is not easy to brake when large tubes are heavy and are clamped by the rear second chuck mechanism 27 during the processing, and the movement may exceed the predetermined distance, affecting the processing accuracy.

[0051] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0052] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0053] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A laser tube cutting machine for cutting heavy tubes comprising a bed (1), characterized in that, The bed (1) is equipped with a center of gravity adjustment mechanism and a gantry cutting mechanism; The center of gravity adjustment mechanism includes a first chuck mechanism (26), a first guide rail (21) is provided on the top wall of the bed (1), a second guide rail (22) is provided on the right side wall of the bed (1), and a first rack (23) is also provided on the right side wall of the bed (1). The height of the first rack (23) is greater than the height of the second guide rail (22), and the first chuck mechanism (26) is located on the rear side of the bed (1).

2. A laser tube cutting machine for cutting heavy wall tubes according to claim 1, characterized in that: A first support seat (24) is provided on the right side of the bed (1). The height of the first support seat (24) is less than the height of the second guide rail (22). A third guide rail (25) is provided on the top wall of the first support seat (24). The first chuck mechanism (26) includes a rear chuck mounting seat (261). The rear chuck mounting seat (261) is integrally cast. A feeding chuck (262) is installed on the rear chuck mounting seat (261). A first motor seat (263) is installed on the left side of the rear chuck mounting seat (261). A first servo motor group (264) is provided on the first motor seat (263). A first gear (265) is fixedly connected to the output end of the first servo motor group (264). The first gear (265) extends to the lower part of the first motor seat (263). The first gear (265) meshes with the first rack (23) of the bed (1).

3. A laser tube cutting machine for cutting heavy wall tubes according to claim 2, characterized in that: A plurality of first sliders (266) are fixedly connected to the lower side of the first motor base (263). The first sliders (266) are slidably connected to the first guide rail (21). A plurality of second sliders (267) are fixedly connected to the left side wall of the rear chuck mounting base (261). The second sliders (267) are slidably connected to the second guide rail (22). A plurality of third sliders (268) are fixedly connected to the bottom end of the rear chuck mounting base (261). The third sliders (268) are slidably connected to the third guide rail (25).

4. The laser tube cutting machine for cutting heavy wall thickness tubes according to claim 2, characterized in that: The bed (1) is provided with a plurality of second chuck mechanisms (27). The second chuck mechanism (27) includes a second chuck mounting base (277). The second chuck mounting base (277) is integrally cast. A clamping chuck (274) is fixedly connected inside the second chuck mounting base (277). A second motor base (278) is fixedly connected to the left side of the second chuck mounting base (277). A second servo motor assembly (275) is fixedly connected to the second motor base (278). A third gear (276) is fixedly connected to the output shaft of the second servo motor assembly (275). The third gear (276) extends to the lower end of the second motor base (278). 76) Engages with the first rack (23) of the bed (1), and a number of fourth sliders (271) are fixedly connected to the lower end of the second motor base (278). The fourth sliders (271) are slidably connected to the first guide rail (21). A number of fifth sliders (272) are fixedly connected to the left side wall of the second chuck mounting base (277). The fifth sliders (272) are slidably connected to the second guide rail (22). A number of sixth sliders (273) are fixedly connected to the bottom end of the second chuck mounting base (277). The sixth sliders (273) are slidably connected to the third guide rail (25). The rear and front parts of the second chuck mounting base (277) are respectively provided with a feed port and a discharge port.

5. The laser pipe cutting machine for cutting heavy wall pipe according to claim 1, wherein: The gantry-type cutting mechanism is located in the middle of the bed (1). The gantry-type cutting mechanism includes a first column (31) and a second column (32). The first column (31) is fixedly connected to the top of the bed (1), and the second column (32) is fixedly connected to the right side of the bed (1). A crossbeam (33) is fixedly connected between the first column (31) and the second column (32). The top of the crossbeam (33) is provided with two fourth guide rails (34) and a second rack (35). A cantilever (36) is fixedly connected to the upper part of the crossbeam (33). The cantilever (36) extends to the front of the crossbeam (33).

6. A laser tube cutting machine for cutting heavy wall tubes according to claim 5, characterized in that: The lower part of the cantilever (36) is provided with several movable sliders, which are slidably connected to the fourth guide rail (34). The interior of the cantilever (36) is provided with a third servo motor group (37), and the output end of the third servo motor group (37) is fixedly connected with a second gear. The second gear extends to the lower end of the cantilever (36) and meshes with the second rack (35).

7. A laser tube cutting machine for cutting heavy wall tubes according to claim 6, characterized in that: Two horizontal fifth guide rails (38) are installed on the right side wall of the cantilever (36). A first lead screw (39) is rotatably connected to the right side wall of the cantilever (36). The first lead screw (39) is located between the two fifth guide rails (38). A fourth servo motor group (391) is provided on one side of the first lead screw (39). The output end of the fourth servo motor group (391) is fixedly connected to the first lead screw (39). A sliding seat (392) is provided on the right side of the cantilever (36). Several seventh sliders (393) are fixedly connected to the inner side of the sliding seat (392). The seventh sliders (393) are slidably connected to the fifth guide rails (38). The sliding seat (392) is fixedly connected to the lead screw nut of the first lead screw (39).

8. The laser tube cutting machine for cutting heavy wall thickness tubes according to claim 7, characterized in that: Two vertical eighth guide rails (394) are fixedly connected to the right side wall of the sliding seat (392). A second lead screw (395) is rotatably connected to the right side wall of the sliding seat (392). The second lead screw (395) is located between the two eighth guide rails (394). A fifth servo motor group (396) is provided at the upper end of the sliding seat (392). The output end of the fifth servo motor group (396) is rotatably connected to the second lead screw (395). A sliding arm (397) is provided on the right side of the sliding seat (392). Several ninth sliders (398) are fixedly connected to the inner side of the sliding arm (397). The ninth sliders (398) are slidably connected to the two eighth guide rails (394). The lead screw nut of the second lead screw (395) is fixedly connected to the sliding arm (397). A laser head (399) is provided at the lower part of the sliding arm (397).

9. A laser tube cutting machine for cutting heavy wall tubes according to claim 8, characterized in that: A second support seat (5) is provided on the left side of the bed (1). Several reinforcing ribs (6) are fixedly connected between the second support seat (5) and the bed (1). A reinforcing beam (4) is fixedly connected to the left side of the second column (32). The reinforcing beam (4) is fixedly connected to the first support seat (24). A power supply (7) is provided on the second support seat (5).

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