Laser circular tube cutting machine

Abstract

The invention provides a laser circular pipe cutting machine, and belongs to the technical field of pipe cutting. Comprising a workbench, a cutting device and a slag suction device, the cutting device and the slag suction device are both located above the workbench, the cutting device comprises a first frame and a second frame, a first sliding plate and a second sliding plate are slidably connected into the first frame and the second frame correspondingly, and a laser knife and a rotating device are arranged on the first sliding plate; the slag suction device comprises a suction fan, a dust suction pipe, a collecting box and a moving device used for pushing the dust suction pipe. The suction hole of the dust suction pipe directly faces the laser cutter, the laser cutter rotates, and the second rotating ring rotates synchronously, so that the suction hole of the dust suction pipe always directly faces the laser cutter, and waste gas and waste residues generated when the laser cutter cuts the circular pipe can be fully absorbed.

Description

Technical Field

[0001] The invention belongs to the technical field of tube cutting, in particular to a laser round tube cutting machine. Background Art

[0002] The laser cutting of the laser cutting machine uses a high-energy density laser beam to heat the workpiece, so that the temperature of the cut part of the workpiece rises rapidly and melts, thereby completing the cutting. Although the laser cutting machine has the advantages of high cutting accuracy, smooth cutting surface, and high cutting effect; however, the laser cutting machine will generate a large amount of smoke and dust while cutting the workpiece. The dust will not only contaminate the lens and the cutting surface of the workpiece, thereby affecting the processing effect, but also pollute the working environment. Even if the operator inhales the dust for a long time, it will pose a threat to the operator's health. At the same time, the height of the feeding device of the existing laser cutting machine cannot be adjusted, and cannot adapt to the round tubes output in different round tube production lines.

[0003] Therefore, the present invention proposes a new technical solution to solve the problem that a laser cutting machine generates a large amount of smoke and dust while cutting a workpiece and the height of the feeding device in the prior art cannot be adjusted. Summary of the invention

[0004] In view of the shortcomings of the prior art, the purpose of the present invention is to solve the problem that a large amount of smoke and dust will be generated when the laser cutting machine cuts the workpiece and the height of the feeding device in the prior art cannot be adjusted, and to provide a laser round tube cutting machine.

[0005] The purpose of the present invention can be achieved by the following technical solutions:

[0006] A laser round tube cutting machine, comprising a workbench, a feeding device, a cutting device and a slag suction device, wherein the feeding device, the cutting device and the slag suction device are all located above the workbench, the feeding device comprises a support table fixed on the workbench and two vertical limit modules fixed on the support table, the vertical limit modules comprise a fixed frame, two first supporting wheels slidably connected to the fixed frame and an adjusting device for adjusting the spacing distance between the two first supporting wheels;

[0007] The cutting device comprises a first frame and a second frame slidably connected above the workbench, a first sliding plate and a second sliding plate are slidably connected inside the first frame and the second frame respectively, a first rotating ring and a second rotating ring are rotatably connected at the center positions of the first sliding plate and the second sliding plate respectively through bearings, a rotating disk is fixed on the side of the first rotating ring close to the second rotating ring, two connecting rods are connected between the rotating disk and the second rotating ring, a first through hole is opened at the center position of the first rotating ring and the rotating disk, a second through hole is opened at the center position of the second rotating ring, a laser knife is fixed at the edge position of the rotating disk, and a rotating device for driving the first rotating ring is fixed on the first sliding plate;

[0008] The slag suction device comprises a suction fan, a dust suction pipe and a collection box, one end of the dust suction pipe passes through the second through hole and is provided with a suction head, the suction head is provided with a suction hole corresponding to the position of the laser knife, a card slot is provided on the outer wall of the dust suction pipe, and a card block for inserting the card slot is provided on the hole wall of the second through hole, and the other end of the dust suction pipe is rotatably connected to the mounting seat, and the mounting seat comprises a bottom block and a top block, and the bottom block and the top block are both provided with strip grooves corresponding to each other in position, and the strip grooves are penetrated by fastening bolts for fixing the relative positions of the bottom block and the top block, and the top of the top block is provided with a third through hole, the dust suction pipe is rotatably connected to the third through hole through a bearing, and the bottom end of the bottom block is connected to a moving device for pushing the mounting seat to move, and the collection box is provided with an outlet and an inlet, the air exhaust port of the suction fan is connected to the outlet of the collection box by a pipe, and the inlet of the collection box is connected to the third through hole by a pipe.

[0009] Preferably, the fixed frame is a rectangular frame composed of two first vertical plates and two first transverse plates, and the adjusting device includes two first sliding blocks slidably connected to the fixed frame, and both ends of the two first sliding blocks are provided with first sliding grooves for being mounted on the first vertical plates, and a first screw rod is longitudinally penetrated through the center position of the first sliding block, and the other end of the first screw rod passes through the first transverse plate and is rotatably connected to the first transverse plate through a bearing and is fixed with a first rotating wheel, and the two first supporting wheels are respectively rotatably connected to one side of the two first sliding blocks through a rotating shaft, and the positions of the two first supporting wheels correspond, and annular limiting grooves are provided on them.

[0010] Preferably, a transverse limit module is arranged between the two vertical limit modules, and the transverse limit module comprises an outer frame and two supporting wheels slidably connected to the outer frame. The outer frame is a rectangular frame composed of two second vertical plates and two second transverse plates. The two sliding blocks are slidably connected to the outer frame, and both ends of the two second sliding blocks are provided with a second sliding groove for being sleeved on the second transverse plate. A second screw rod is horizontally passed through the center position of the second sliding block, and the other end of the second screw rod passes through the second vertical plate and is rotatably connected to the second vertical plate through a bearing and fixed with the second rotating wheel. The top ends of the two second sliding blocks are fixed with an extension rod, and the two second supporting wheels are respectively sleeved on the outside of the two extension rods with a clearance fit, and the extension rod is also sleeved with two first seats, and the two first seats are respectively located at the upper and lower ends of the second supporting wheel and move along the extension rod, and the first seat is provided with a first threaded hole, and the first threaded hole is penetrated by a first tightening bolt.

[0011] Preferably, the workbench is provided with a plurality of first slide rails, the bottom ends of the first frame and the second frame are respectively fixed with a first base and a second base, and the bottom ends of the first base and the second base are both provided with a plurality of third sliding blocks for being mounted on the first slide rails and moving along the first slide rails.

[0012] Preferably, at least two second slide rails are provided inside the first frame and the second frame, and a fourth slide block for sleeved on the second slide rails is fixed on the first sliding plate and the second sliding plate, and an extension block is fixed on the top of the first frame and the second frame, and a third screw rod is passed through the two extension blocks, and the two third screw rods are respectively rotatably connected to the two extension blocks through bearings, a third rotating wheel is fixed to one end of the two third screw rods, and a fifth slide block is sleeved on the other end of the two third screw rods, and the two fifth slide blocks are respectively fixedly connected to the first sliding plate and the second sliding plate.

[0013] Preferably, the rotating device includes a first motor, a rotating wheel and a belt, the housing of the first motor is fixedly mounted on one side of the first sliding plate, the output shaft of the first motor passes through the first sliding plate and is fixedly connected to the rotating wheel, and the belt is tightly sleeved on the rotating wheel and the first rotating ring.

[0014] Preferably, the moving device includes a connecting seat, a sixth slider, a second motor and a fourth screw rod, a strip slide groove is opened at the upper end of the connecting seat, the second motor is installed at one end of the connecting seat and its output shaft is inserted into the strip slide groove, one end of the fourth screw rod is fixedly connected to the output shaft of the second motor, and the other end of the fourth screw rod is rotatably connected to the groove wall of the strip slide groove, the sixth slider is located in the strip slide groove in a clearance fit manner and is sleeved on the outside of the fourth screw rod, and the top end of the sixth slider is fixedly connected to the bottom block.

[0015] Preferably, the workbench is also provided with a first cylinder for pushing the first base, and the first cylinder is provided with a plurality of air circuits for controlling the moving speed of its piston rod.

[0016] Preferably, a clamping device is further provided on one side of the first sliding plate close to the feeding device, and the clamping device comprises two clamping jaws and a second cylinder for driving the two clamping jaws, and opposite sides of the two clamping jaws are both arranged in an arc shape.

[0017] Preferably, a top plate is connected between the two connecting rods, a fourth through hole for the dust suction tube to pass through is opened at the center position of the top plate, second sockets are fixed at both ends of the top plate, the second sockets are sleeved on the outside of the connecting rod and move along the connecting rod, a second threaded hole is also opened on the second socket, and a second tightening bolt is passed through the second threaded hole.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The mobile device inserts the vacuum tube into the round tube to be cut, and the suction hole of the vacuum tube faces the laser knife. The laser knife rotates, and at the same time, the second rotating ring is driven to rotate synchronously through the connecting rod, so that the suction hole of the vacuum tube always faces the laser knife, and the waste gas and waste residue generated by the laser knife cutting the round tube can be fully absorbed.

[0020] 2. The round tube to be cut is inserted between the two first supporting wheels of the vertical limiting module to prevent the round tube to be cut from shaking up and down, and the round tube to be cut is inserted between the two second supporting wheels of the horizontal limiting module to prevent the round tube to be cut from shaking left and right, and the heights of the first supporting wheel and the second supporting wheel can be adjusted, so that the feeding device can adapt to the round tubes produced by different production lines in height, and the heights of the first sliding plate and the second sliding plate in the cutting device and the top block in the slag suction device can be adjusted to match the height of the feeding device and the round tube.

[0021] 3. By moving the top sheet, the distance between the top sheet and the laser cutter can be adjusted, thereby adjusting the cutting length of the round tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a structural schematic diagram of a laser round tube cutting machine of the present invention;

[0023] Figure 2 for Figure 1 The enlarged view of point A in the middle;

[0024] Figure 3 for Figure 1 The enlarged view of point B in the middle;

[0025] Figure 4 for Figure 1 Enlarged view of point C in the middle;

[0026] Figure 5 A cross-sectional view of a second rotating ring of a laser round tube cutting machine according to the present invention;

[0027] Figure 6 for Figure 1 The enlarged view of point D in the middle;

[0028] Figure 7 This is a cross-sectional view of a moving device of a laser round tube cutting machine of the present invention;.

[0029] 1. The working table includes the following steps: 1. a working table; 2. a supporting table; 3. a fixing frame; 4. a first supporting wheel; 5. a first vertical plate; 6. a first horizontal plate; 7. a first sliding block; 8. a first screw rod; 9. a first rotating wheel; 10. an outer frame; 11. a second supporting wheel; 12. a second vertical plate; 13. a second horizontal plate; 14. a second sliding block; 15. a second screw rod; 16. a second rotating wheel; 17. an extension rod; 18. a first sleeve; 19. a first tightening bolt; 20. a first frame; 21. a second frame; 22. a first slide rail; 23. a first base; 24. a second base; 25. a third sliding block; 26. a first sliding plate; 27. a second sliding plate; 28. a second slide rail; 29. ​​a fourth sliding block; 30. an extension block; 31. a third screw rod ; 32. The third rotating wheel; 33. The fifth slider; 34. The first rotating ring; 35. The second rotating ring; 36. The turntable; 37. The connecting rod; 38. The laser knife; 39. The first motor; 40. The rotating wheel; 41. The belt; 42. The clamping claw; 43. The second cylinder; 44. The first cylinder; 45. The suction fan; 46. The dust suction pipe; 47. The collection box; 48. The suction head; 49. The suction hole; 50. The block; 51. The mounting seat; 52. The bottom block; 53. The top block; 54. The strip groove; 55. The fastening bolt; 56. The connecting seat; 57. The sixth slider; 58. The second motor; 59. The fourth screw rod; 60. The strip slide groove; 61. The outlet; 62. The inlet; 63. The top plate; 64. The second set of seats; 65. The second tightening bolt. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] A laser tube cutting machine, such as Figure 1-Figure 7 As shown, it includes a workbench 1, a feeding device, a cutting device and a slag suction device, and the feeding device, the cutting device and the slag suction device are all located above the workbench 1.

[0032] The feeding device includes a support table 2 fixed on the workbench 1, two vertical limit modules fixed on the support table 2, and a horizontal limit module located between the two vertical limit modules. The vertical limit module includes a fixed frame 3, two first support wheels 4 slidably connected to the fixed frame 3, and an adjustment device for adjusting the spacing between the two first support wheels 4. The fixed frame 3 is a rectangular frame composed of two first vertical plates 5 and two first horizontal plates 6. The adjustment device includes two first sliders 7 slidably connected to the fixed frame 3, both ends of the two first sliders 7 are provided with first slide grooves for being sleeved on the first vertical plates 5, the center position of the first slider 7 is longitudinally penetrated with a first screw rod 8, the other end of the first screw rod 8 passes through the first horizontal plate 6 and is rotatably connected to the first horizontal plate 6 through a bearing and is fixed with a first rotating wheel 9. The two first support wheels 4 are rotatably connected to one side of the two first sliders 7 through a rotating shaft, the positions of the two first support wheels 4 correspond, and an annular limit groove is provided on them. The lateral limiting module includes an outer frame 10, two second supporting wheels 11 slidably connected to the outer frame 10, the outer frame 10 is a rectangular frame composed of two second vertical plates 12 and two second horizontal plates 13, two second sliding blocks 14 are slidably connected in the outer frame 10, and both ends of the two second sliding blocks 14 are provided with second sliding grooves for being sleeved on the second horizontal plates 13, a second screw rod 15 is horizontally penetrated at the center position of the second sliding block 14, the other end of the second screw rod 15 passes through the second vertical plate 12 and is rotatably connected to the second vertical plate 12 through a bearing and is fixed with a second rotating wheel 16, and an extension rod 17 is fixed to the top of the two second sliding blocks 14, the two second supporting wheels 11 are respectively sleeved on the outside of the two extension rods 17 with clearance fit, and two first sleeves 18 are also sleeved on the extension rod 17, the two first sleeves 18 are respectively located at the upper and lower ends of the second supporting wheel 11 and move along the extension rod 17, a first threaded hole is provided on the first sleeve 18, and a first tightening bolt 19 is penetrated in the first threaded hole.

[0033] The cutting device includes a first frame 20 and a second frame 21 slidably connected above the workbench 1, a plurality of first slide rails 22 are fixed on the workbench 1, a first base 23 and a second base 24 are fixed to the bottom ends of the first frame 20 and the second frame 21 respectively, and a plurality of third sliders 25 for being mounted on the first slide rails 22 and moving along the first slide rails 22 are provided at the bottom ends of the first base 23 and the second base 24. The first frame 20 and the second frame 21 are respectively slidably connected with the first sliding plate 26 and the second sliding plate 27, and at least two second slide rails 28 are fixed inside the first frame 20 and the second frame 21. The first sliding plate 26 and the second sliding plate 27 are both fixed with a fourth slider 29 for being sleeved on the second slide rail 28. The top of the first frame 20 and the second frame 21 are both fixed with an extension block 30, and the two extension blocks 30 are each penetrated by a third screw rod 31, and the two third screw rods 31 are respectively rotatably connected to the two extension blocks 30 through bearings, and one end of the two third screw rods 31 is fixed with a third rotating wheel 32, and the other end of the two third screw rods 31 is sleeved with a fifth slider 33, and the two fifth sliders 33 are respectively fixedly connected to the first sliding plate 26 and the second sliding plate 27. The first sliding plate 26 and the second sliding plate 27 are rotatably connected to the first rotating ring 34 and the second rotating ring 35 through bearings at their center positions, respectively. A rotating disk 36 is fixed to the first rotating ring 34 on one side close to the second rotating ring 35. Two connecting rods 37 are connected between the rotating disk 36 and the second rotating ring 35. A first through hole is provided through the center positions of the first rotating ring 34 and the rotating disk 36, and a second through hole is provided at the center position of the second rotating ring 35. A laser knife 38 is fixed to the edge position of the rotating disk 36. A rotating device for driving the first rotating ring 34 is fixed to the first sliding plate 26. The rotating device includes a first motor 39, a rotating wheel 40 and a belt 41. The housing of the first motor 39 is fixedly mounted on one side of the first sliding plate 26. The output shaft of the first motor 39 passes through the first sliding plate 26 and is fixedly connected to the rotating wheel 40. The belt 41 is tightly sleeved on the rotating wheel 40 and the first rotating ring 34. A clamping device is also provided on one side of the first sliding plate 26 near the feeding device, and the clamping device includes two clamping jaws 42 and a second cylinder 43 for driving the two clamping jaws 42, and the opposite sides of the two clamping jaws 42 are both arranged in an arc shape. A first cylinder 44 for pushing the first base 23 is also provided on the workbench 1, and a plurality of air paths are provided on the first cylinder 44 for controlling the moving speed of its piston rod (arranging a plurality of air paths on the cylinder so that its piston rod moves at different speeds is a mature prior art, which will not be described in detail here).

[0034] The slag suction device is fixedly installed on the upper end of the second base 24, and the slag suction device includes a suction fan 45, a dust suction pipe 46 and a collection box 47. One end of the dust suction pipe 46 passes through the second through hole and is provided with a suction head 48. The suction head 48 is provided with a suction hole 49 corresponding to the position of the laser knife 38. A card slot is provided on the outer wall of the dust suction pipe 46, and a card block 50 for inserting into the card slot is provided on the hole wall of the second through hole. The other end of the dust suction pipe 46 is rotatably connected to a mounting seat 51, and the mounting seat 51 includes a bottom block 52 and a top block 53. The bottom block 52 and the top block 53 are both provided with strip grooves 54 corresponding to each other in position. Fastening bolts 55 are passed through the strip grooves 54 to fix the relative positions of the bottom block 52 and the top block 53. The top of the top block 53 is provided with a first Three through holes, the dust suction pipe 46 is rotatably connected in the third through hole through a bearing, the bottom end of the bottom block 52 is connected with a moving device for pushing the mounting seat 51 to move, the moving device includes a connecting seat 56, a sixth slider 57, a second motor 58 and a fourth screw rod 59, a strip slide 60 is provided at the upper end of the connecting seat 56, the second motor 58 is installed at one end of the connecting seat 56 and its output shaft penetrates into the strip slide 60, one end of the fourth screw rod 59 is fixedly connected to the output shaft of the second motor 58, the other end of the fourth screw rod 59 is rotatably connected to the groove wall of the strip slide 60, the sixth slider 57 is located in the strip slide 60 in a clearance fit manner and is sleeved on the outside of the fourth screw rod 59, and the top of the sixth slider 57 is fixedly connected to the bottom block 52. The collection box 47 is provided with an outlet 61 and an inlet 62, the air outlet of the suction fan 45 is connected to the outlet 61 of the collection box 47 through a pipeline, and the inlet 62 of the collection box 47 is connected to the third through hole through a pipeline.

[0035] Additionally, a top plate 63 is connected between the two connecting rods 37, and a fourth through hole is provided at the center of the top plate 63 for the dust suction tube 46 to pass through. Second sockets 64 are fixed to both ends of the top plate 63, and the second sockets 64 are sleeved on the outside of the connecting rod 37 and move along the connecting rod 37. A second threaded hole is also provided on the second socket 64, and a second tightening bolt 65 is passed through the second threaded hole.

[0036] It is worth noting that the bearings used in this embodiment are all equipped with dampers or other methods commonly used in the prior art to increase the resistance to bearing rotation, thereby preventing the bearing from rotating automatically.

[0037] Working principle: First, adjust each part according to the size of the round tube output by the production line and the height at which it is located. Rotate the first rotating wheel 9 to drive the first screw rod 8 to rotate, and the rotation of the first screw rod 8 drives the first slider 7 mounted thereon to move up and down along the first screw rod 8 and the first vertical plate 5, and the spacing distance between the two first sliders 7 changes, thereby adjusting the spacing distance between the two first supporting wheels 4, so that the vertical limit module adapts to the size and height of the round tube. Rotating the second rotating wheel 16 drives the second screw rod 15 to rotate. The rotation of the second screw rod 15 drives the second slider 14 mounted thereon to move left and right along the second screw rod 15 and the second transverse plate 13. The spacing distance between the two second sliders 14 changes, thereby adjusting the spacing distance between the two second supporting wheels 11 so that the transverse limit module adapts to the size of the round tube. Then, the first tightening bolt 19 is screwed out, and the second supporting wheel 11 and the first sleeve 18 are slid on the extension rod 17. When the first tightening bolt 19 moves to the required height, the first tightening bolt 19 is screwed into the first threaded hole again. The first tightening bolt 19 is pressed against the extension rod 17, thereby fixing the first sleeve 18, so that the second supporting wheel 11 is located at a specified height, thereby making the transverse limit module adapt to the height of the round tube.

[0038] Then, the third rotating wheel 32 on the first frame 20 and the second frame 21 is rotated respectively, driving the third screw rod 31 fixedly connected thereto to rotate, and the rotation of the third screw rod 31 drives the fifth slider 33 mounted thereon to move up and down along the third screw rod 31, and the two fifth sliders 33 drive the first sliding plate 26 and the second sliding plate 27 respectively, and the first sliding plate 26 and the second sliding plate 27 are moved on the corresponding second slide rail 28 through the fourth slider 29 thereon, so that the positions of the first through hole and the second through hole correspond to the positions of the round tube, so that the cutting device can adapt to the height of the round tube. Then, loosen the fastening bolt 55, and adjust the height of the mounting seat 51 by adjusting the relative position between the bottom block 52 and the top block 53. When the third through hole corresponds to the position of the round tube, re-tighten the bottom block 52 and the top block 53, so that the slag suction device can adapt to the height of the round tube.

[0039] Before cutting, unscrew the second tightening bolt 65 and slide the second seat 64. The second seat 64 drives the top plate 63 to move, so as to adjust the distance between the top plate 63 and the laser knife 38 according to the length of the circular tube to be cut. When the top plate 63 moves to the specified position, screw the second tightening bolt 65 into the second threaded hole again. The second tightening bolt 65 presses on the connecting rod 37 to fix the top plate 63.

[0040] The round tubes produced in the production line will continue to move outward under the action of the rollers in the production line. The round tubes moving out of the production line can be directly inserted into the feeding device. One end of the round tube first passes between the two first supporting wheels 4 in the vertical limiting module closer to the production line, and then passes between the two second supporting wheels 11 on the horizontal limiting module, and then passes between the two first supporting wheels 4 in the vertical limiting module closer to the cutting device, and then passes through the first sliding plate 26 through the first through hole until the round tube rests on the top plate 63. At the same time, the second motor 58 is started, and the output shaft of the second motor 58 rotates clockwise to drive the fourth screw rod 59 to rotate. The rotation of the fourth screw rod 59 drives the sixth slider 57 mounted thereon to rotate and move along the fourth screw rod 59. Since the sixth slider 57 is located in the strip slide 60 in a clearance fit manner, the strip slide 60 plays a circumferential limiting role on the sixth slider 57. The sixth slider 57 does not rotate, but only moves to the left along the fourth screw rod 59. The movement of the sixth slider 57 drives the mounting seat 51 fixedly connected thereto to move to the left, and the movement of the mounting seat 51 drives the dust suction pipe 46 to move to the left. Therefore, the dust suction pipe 46 will gradually insert into the round tube. When the dust suction pipe 46 cannot continue to be inserted into the round tube, the position of the suction head 48 and the laser knife 38, and the suction hole 49 is facing the laser knife 38. At the same time, the round tube just rests on the top plate 63 and cannot continue to move toward each other. At this time, the second cylinder 43 is started again, and the second cylinder 43 drives the two clamps 42 to clamp the round tube. At this time, the slowly outward moving round tube will push the first frame 20 and the second frame 21 to move slowly to the right, and the first cylinder 44 also controls the piston rod to move slowly through a low-speed air path, and the speed of the piston rod is equal to the speed of the first frame 20 and the second frame 21. In addition, the laser knife 38 is located on the first frame 20, so that the relative position of the laser knife 38 and the round tube remains unchanged, so as to ensure that the laser knife 38 rotates to cut a smooth incision.

[0041] Then, the laser knife 38 is started and the first motor 39 is started at the same time. The output shaft of the first motor 39 rotates to drive the rotating wheel 40 fixedly connected thereto to rotate. The rotating wheel 40 drives the first rotating ring 34 to rotate through the belt 41. The first rotating ring 34 drives the rotating disk 36 fixedly connected thereto to rotate. The rotating disk 36 drives the laser knife 38 to rotate and cut the round tube. While the laser knife 38 rotates and cuts the round tube, the suction fan 45 is started, and the dust suction pipe 46 generates suction. The waste gas and waste residue generated when the laser knife 38 rotates and cuts the round tube enter the dust suction pipe 46 through the suction hole 49 and enter the collection box 47.

[0042] Moreover, when the vacuum tube 46 is inserted into the round tube, the suction hole 49 is facing the laser knife 38, and when the turntable 36 drives the laser knife 38 to rotate, the turntable 36 simultaneously drives the second rotating ring 35 to rotate through the connecting rod 37. When the vacuum tube 46 passes through the second through hole, the clamping block 50 is inserted into the clamping slot, and the other end of the vacuum tube 46 is rotatably connected to the mounting seat 51. The rotation of the second rotating ring 35 can drive the vacuum tube 46 to rotate, thereby realizing the synchronous rotation of the vacuum tube 46 and the laser knife 38, so that the position of the suction hole 49 is always facing the laser knife 38, and the waste gas and waste residue generated by the cutting of the laser knife 38 can be fully absorbed.

[0043] When the cutting is completed, the clamping device is released, and the dust suction tube 46 moves to the right for reset. After the dust suction tube 46 is pulled out of the round tube, the first cylinder 44 controls the piston rod to move quickly through a high-speed air path. The speed of the piston rod is greater than the speed of the round tube movement, which prevents the cut section of the round tube from being blocked by the uncut round tube behind, ensuring that the cut round tube can fall naturally.

[0044] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0045] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "mounted / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] It will be apparent to those skilled in the art that the 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 the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0047] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A laser round tube cutting machine, comprising a workbench (1), a cutting device and a slag suction device, wherein the cutting device and the slag suction device are both located above the workbench (1), and characterized in that: The cutting device comprises a first frame (20) and a second frame (21) connected above the workbench (1); a turntable (36) and a second rotating ring (35) are rotatably connected to the first frame (20) and the second frame (21), respectively; a first through hole is provided at the center of the turntable (36); a second through hole is provided at the center of the second rotating ring (35); and a laser knife (38) is fixed to the turntable (36); The slag suction device comprises a suction fan (45), a dust suction pipe (46) and a collection box (47); one end of the dust suction pipe (46) passes through the second through hole and is provided with a suction head (48); a suction hole (49) corresponding to the laser knife (38) is provided on the suction head (48); the dust suction pipe (46) can be inserted into the round tube; the turntable (36) drives the laser knife (38) to rotate and cut the round tube; at the same time, the second rotating ring (35) rotates; the rotation of the second rotating ring (35) can drive the dust suction pipe (46) to rotate, thereby realizing the synchronous rotation of the dust suction pipe (46) and the laser knife (38), so that the position of the suction hole (49) is always facing the laser knife (38).

2. The laser round tube cutting machine according to claim 1, characterized in that: The laser round tube cutting machine also includes a feeding device, which includes a support platform (2) fixed on the workbench (1) and two vertical limit modules fixed on the support platform (2), and the vertical limit modules include a fixed frame (3), two first supporting wheels (4) slidably connected to the fixed frame (3), and an adjusting device for adjusting the spacing between the two first supporting wheels (4).

3. A laser round tube cutting machine according to claim 2, characterized in that: The adjusting device comprises two first sliding blocks (7) slidably connected in a fixed frame (3); a first screw rod (8) is longitudinally passed through the center position of the first sliding block (7); a first rotating wheel (9) is fixed to one end of the first screw rod (8); two first supporting wheels (4) are rotatably connected to one side of the two first sliding blocks (7) via rotating shafts respectively; the positions of the two first supporting wheels (4) correspond to each other and both of them are provided with an annular limiting groove.

4. A laser round tube cutting machine according to claim 1, 2 or 3, characterized in that: The first frame (20) and the second frame (21) are slidably connected to a first sliding plate (26) and a second sliding plate (27), respectively; the first sliding plate (26) and the second sliding plate (27) are respectively provided with a first rotating ring (34) and the second rotating ring (35); the first sliding plate (26) is provided with a rotating device for driving the first rotating ring (34).

5. A laser round tube cutting machine according to claim 1, 2 or 3, characterized in that: The workbench (1) is provided with a plurality of first slide rails (22); a first base (23) and a second base (24) are respectively fixed at the bottom ends of the first frame (20) and the second frame (21); and a plurality of third slide blocks (25) are provided at the bottom ends of the first base (23) and the second base (24) for being sleeved on the first slide rails (22) and moving along the first slide rails (22).

6. The laser round tube cutting machine according to claim 4, characterized in that: At least two second slide rails (28) are arranged inside the first frame (20) and the second frame (21); a fourth slide block (29) for sleeved on the second slide rail (28) is fixed on the first slide plate (26) and the second slide plate (27); an extension block (30) is fixed on the top of the first frame (20) and the second frame (21); a third screw rod (31) is passed through the two extension blocks (30); the two third screw rods (31) are rotatably connected to the two extension blocks (30) through bearings; a third rotating wheel (32) is fixed to one end of the two third screw rods (31); a fifth slide block (33) is sleeved on the other end of the two third screw rods (31); the two fifth slide blocks (33) are fixedly connected to the first slide plate (26) and the second slide plate (27), respectively.

7. A laser round tube cutting machine according to claim 1, 2 or 3, characterized in that: The other end of the dust suction pipe (46) is rotatably connected to a mounting seat (51), and the mounting seat (51) can be moved under the push of a moving device.

8. The laser round tube cutting machine according to claim 7, characterized in that: The moving device comprises a connecting seat (56), a sixth slider (57), a second motor (58) and a fourth screw rod (59); a strip slide groove (60) is provided at the upper end of the connecting seat (56); the second motor (58) is mounted on one end of the connecting seat (56) and its output shaft is inserted into the strip slide groove (60); one end of the fourth screw rod (59) is fixedly connected to the output shaft of the second motor (58); the other end of the fourth screw rod (59) is rotatably connected to the groove wall of the strip slide groove (60); the sixth slider (57) is located in the strip slide groove (60) in a clearance fit manner and is sleeved on the outside of the fourth screw rod (59); the sixth slider (57) is fixedly connected to the mounting seat (51).

9. A laser round tube cutting machine according to claim 1, 2 or 3, characterized in that: A slot is provided on the outer side wall of the dust suction pipe (46), and a block (50) for inserting into the slot is provided on the hole wall of the second through hole.

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